PUSH-PULL CONNECTION MECHANISM FOR FLOOR CLEANING MACHINE, AND FLOOR CLEANING MACHINE

Abstract

A push-pull connection mechanism for a floor cleaning machine, and a floor cleaning machine. The push-pull connection mechanism comprises: a rotating member rotatably mounted on a machine head; and a first connecting member rotatably mounted on the rotating member by means of a rotating shaft, a rotation axis of the first connecting member being parallel to a rotation axis of the rotating member. A machine body rotatably matches the first connecting member, and a rotation axis of the machine body is perpendicular to the rotation axis of the first connecting member. The rotation axis of the first connecting member of the push-pull connection mechanism is parallel to the rotation axis of the rotating member, i.e., eccentric arrangement is performed, so that an operator can control the machine head to move in different directions by applying forward, backward, leftward, and rightward force to the machine body.

Description

TECHNICAL FIELD

The invention relates to the field of floor cleaning equipment, in particular to a push-pull connection mechanism for a floor cleaning machine and a floor cleaning machine.

BACKGROUND ART

The floor cleaning machine is a kind of cleaning machinery suitable for cleaning hard floors while sucking up sewage and taking the sewage away from the site, which has the advantages of environmental protection, energy saving and high efficiency.

The walk-behind floor cleaning machine mainly includes a machine body and a machine head with driving force. The machine body is connected with the machine head below through a connection structure, and the existing connection structure is large at the angle between the machine body and the horizontal plane when controlling the moving direction of the machine head, which leads to the machine body being easy to collide with other objects when cleaning areas such as below the low cabinet.

SUMMARY OF THE INVENTION

In view of the above-mentioned problem, the invention provides a push-pull connection mechanism for a floor cleaning machine, and a floor cleaning machine.

The technical solution adopted by the invention is as follows:

A push-pull connection mechanism for a floor cleaning machine, wherein the floor cleaning machine includes a machine head and a machine body, and the push-pull connection mechanism includes:

• • a rotating member rotatably mounted on the machine head;
  • a first connecting member rotatably mounted on the rotating member by means of a rotating shaft, wherein a rotation axis of the first connecting member is parallel to a rotation axis of the rotating member, the machine body rotatably matches the first connecting member, and a rotation axis of the machine body is perpendicular to the rotation axis of the first connecting member.

The machine body is connected to the machine head by means of the push-pull connection mechanism; during practical operation, the angle formed between the machine body and a horizontal plane (floor) may be relatively small, and during the cleaning of areas such as below the low cabinet, the machine body is less likely to collide with other objects. The rotation axis of the first connecting member of the push-pull connection mechanism is parallel to the rotation axis of the rotating member, i.e., eccentric arrangement is performed, so that an operator can control the machine head to move in different directions by applying forward, backward, leftward, and rightward force to the machine body. Specifically, the machine head can actively move through a driving structure, and when a force is applied to the first connecting member through the machine body, when the force does not pass through the axis of the rotating member, a bias torque can be generated, so that the machine head can be controlled to rotate accordingly.

In actual operation, while the machine body keeps one direction, the direction of each angle of the machine head can be controlled by the push-pull connection mechanism.

In one embodiment of the invention, the push-pull connection mechanism further includes:

• • a positioning shaft mounted on the machine head, wherein the rotating member is directly coated on the positioning shaft or is coated on the positioning shaft through a circumferentially rollable element, and an axis of the positioning shaft is coincidental to the rotation axis of the rotating member;
  • a protective member positioned outside the positioning shaft, wherein at least part of the structure of the rotating member is positioned between the protective member and the positioning shaft.

At least part of the structure of the rotating member is positioned between the protective member and the positioning shaft, and the protective member can protect or limit the rotating member to ensure the reliable and stable work of the rotating member.

In practical application, the circumferentially rollable element may be a bearing.

In one embodiment of the invention, the protective member is provided with a cylindrical inner side wall, the cylindrical inner side wall is provided with an arc-shaped groove, and the rotating member is provided with a bump extending into the arc-shaped groove, and the bump moves in the arc-shaped groove when the rotating member rotates relative to the machine head.

The protective member is provided with a cylindrical inner side wall, which can better define and protect the rotating member; by providing the arc-shaped groove and the bump, the rotation amplitude of the rotating member relative to the machine head can be defined; by matching the bump with the side wall of the arc-shaped groove, a better control effect can be achieved.

The application further discloses a floor cleaning machine, including a machine head, a machine body, and a push-pull connection mechanism connecting the machine head and the machine body, wherein the push-pull connection mechanism is the push-pull connection mechanism described above.

In one embodiment of the invention, a limiting structure is also included, wherein the limiting structure includes:

• • a positioning groove arranged on the first connecting member;
  • a limiting member movably arranged on the machine body, and the limiting member being provided with a limiting part for being clamped into the positioning groove;
  • a linkage member connected with the limiting member and used for driving the limiting member to move.

When the limiting part of the limiting member is clamped into the positioning groove of the first connecting member, the machine body and the first connecting member can be defined, and the machine body will not fall down after the hand is released; in addition, the design of the limiting structure enables the weight of the machine body no longer compress the operator's hand.

In one embodiment of the invention, the machine body includes a second connecting member, wherein the limiting member is movably arranged on the second connecting member, the second connecting member is rotatably mounted on the first connecting member, and a plurality of positioning grooves are provided, and the plurality of positioning grooves are distributed at intervals around a rotation axis of the second connecting member.

In one embodiment of the invention, the rotation axis of the second connecting member is arranged horizontally; the machine body has a plurality of working positions, and when at different working positions, the angles between the machine body and the floor are different, and the limiting part of the limiting member is clamped into different positioning grooves.

In one embodiment of the invention, the positioning groove is provided with two limiting side walls, and the limiting side walls match the limiting part to define the position of the limiting part;

at least one positioning groove is a movable groove, and when the limiting part is clamped into the movable groove, the limiting part and at least one limiting side wall of the movable groove have a movable space, and the machine body can drive the limiting part to rotate in the movable groove.

The movable groove is longer than the ordinary positioning groove in the circumferential direction, so that when the limiting part is clamped into the movable groove, the machine body can also rotate slightly, which is convenient for operators of different heights to freely adjust the height of the machine body (that is, adjust the height of the grip handle on the machine body).

In one embodiment of the invention, the limiting member is slidably arranged on the second connecting member, and the limiting structure further includes an elastic member arranged on the second connecting member or the machine body for driving the limiting member to slide toward one side of the first connecting member;

the machine body is rotatably provided with an unlocking member, one end of the linkage member is connected with the unlocking member, and the rotation of the unlocking member enables the linkage member to drive the limiting member to slide to the side away from the positioning groove.

In one embodiment of the invention, the unlocking member is arranged on an upper part of the machine body.

This arrangement facilitates the operation of the unlocking member without the need for the operator to squat. In practical application, the unlocking member can be a pressing handle.

In one embodiment of the invention, the second connecting member is provided with a channel for the limiting member and the linkage member to pass through, a lower end of the second connecting member is provided with two oppositely arranged connecting parts, the two connecting parts are respectively located on both sides of the first connecting member, the two connecting parts rotatably match the first connecting member through a connecting shaft, the two connecting parts form an mounting groove, a bottom wall of the mounting groove is provided with a through hole communicated with the channel, and the limiting part penetrates the through hole;

The first connecting member is provided with at least one limiting block, and the limiting block is used for cooperating with the second connecting member to define a rotation angle of the second connecting member relative to the first connecting member.

The second connecting member and the first connecting member are so arranged that the entire connecting structure is stressed reliably.

The invention has the following beneficial effects: the machine body is connected to the machine head by means of the push-pull connection mechanism; during practical operation, the angle formed between the machine body and a horizontal plane (floor) may be relatively small, and during the cleaning of areas such as below the low cabinet, the machine body is less likely to collide with other objects. The rotation axis of the first connecting member of the push-pull connection mechanism is parallel to the rotation axis of the rotating member, i.e., eccentric arrangement is performed, so that an operator can control the machine head to move in different directions by applying forward, backward, leftward, and rightward force to the machine body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of a floor cleaning machine;

FIG. 2 is a sectional view of a limiting structure in the state of FIG. 1;

FIG. 3 is a structural schematic diagram of the floor cleaning machine;

FIG. 4 is an exploded view of a push-pull connection mechanism;

FIG. 5 is a partial exploded view of the limiting structure;

FIG. 6 is a schematic diagram of a machine body obliquely positioned relative to a machine head;

FIG. 7 is a schematic diagram of the cooperation of the limiting part with the movable groove;

FIG. 8 is a side view of the floor cleaning machine cleaning an area below a low cabinet;

FIG. 9 is a top view of the floor cleaning machine maintaining an E2 shape and cleaning the lower area below the low cabinet;

FIG. 10 is a schematic diagram of the machine body maintaining an E1 shape while the machine head running in an F1 direction;

FIG. 11 is a schematic diagram of the machine body maintaining an E1 shape while the machine head running in an F2 direction;

FIG. 12 is a schematic diagram of the machine body maintaining an E1 shape while the machine head running in an F3 direction;

FIG. 13 is a schematic diagram of the machine body maintaining an E1 shape while the machine head running in an F4 direction;

FIG. 14 is a schematic diagram of the machine body maintaining an E1 shape while the machine head running in an F5 direction;

FIG. 15 is a bottom view of the machine head;

FIG. 16 is a schematic diagram of a guide traveling wheel as a roller for conveying a push-pull floor cleaning machine;

FIG. 17 is a schematic diagram of a support bracket of embodiment 2 in a support position; and

FIG. 18 is a schematic diagram of a support bracket of embodiment 3 in a support position.

DESCRIPTION OF REFERENCE NUMERALS IN THE FIGURES

• • A: machine body; B: machine head; 1: push-pull connection mechanism; 11: rotating member; 111: bump; 12: first connecting member; 121: positioning groove; 1211: limiting side wall; 1212: movable space; 122: limiting block; 13: positioning shaft; 14: protective member; 15: rotating shaft; 141: cylindrical inner side wall; 1411: arc-shaped groove; 21: cleaning brush disc; 22: driving wheel; 23: dust suction device; 231: suction port; 24: water suction device; 25: guide traveling wheel; 26: illumination lamp; 27: support bracket; 28: accommodating cavity; 31: evacuating device; 32: water tank; 321: lifting handle; 32: hand shank control unit; 33: limiting member; 331: limiting part; 34: linkage member; 35: second connecting member; 351: connecting part; 352: mounting groove; 3521: through hole; 353: channel; 36: unlocking member; 4: waste suction pipe; Z1: rotation axis of the rotating member; Z2: rotation axis of the first connecting member; Z3: rotation axis of the machine body; X: rotation axis of the second connecting member.

DETAILED DESCRIPTION OF THE INVENTION

In order to make the object, technical solutions, and advantages of the embodiments of the invention clearer, the technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the application, not all embodiments. Generally, the assemblies described and illustrated in the accompanying drawings of the embodiments of the application may be arranged and designed in a variety of different configurations.

In the description of the application, it should be noted that the orientation or positional relationship indicated by the terms “inside” and “outside” is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship usually placed in the use of the product of the application, and is only for the convenience of description and simplification of the description of the application, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application. In addition, the terms “first”, “second”, etc. are merely used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

In the description of the invention, it should also be noted that unless otherwise explicitly specified and limited, the terms “arrangement” and “connection” should be understood in a broad sense, for example, they may be fixed, detachable, or integrally connected; it can be directly connected, indirectly connected through an intermediate medium, or it can be an internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the invention may be understood on a case-by-case basis.

Hereinafter, the invention will be described in detail with reference to the accompanying drawings.

Embodiment I

As shown in FIGS. 1, 3 and 4, a floor cleaning machine includes a machine head B and a machine body A, and the machine body A is connected to the machine head B through a push-pull connection mechanism 1. In the embodiment, the push-pull connection mechanism 1 includes:

• • a rotating member 11 rotatably mounted on the machine head B;
  • a first connecting member 12 rotatably mounted on the rotating member 11 by means of a rotating shaft 15, wherein a rotation axis Z2 of the first connecting member is parallel to a rotation axis Z1 of the rotating member, the machine body A rotatably matches the first connecting member 12, and a rotation axis Z3 of the machine body is perpendicular to the rotation axis Z2 of the first connecting member.

The machine body A is connected to the machine head B by means of the push-pull connection mechanism 1; during practical operation, the angle formed between the machine body A and a horizontal plane (floor) may be relatively small, and during the cleaning of areas such as cabinet legs, the machine body A is less likely to collide with other objects, as shown in FIGS. 8 and 9. The rotation axis Z2 of the first connecting member of the push-pull connection mechanism 1 is parallel to the rotation axis Z1 of the rotating member, i.e., eccentric arrangement is performed, so that an operator can control the machine head B to move in different directions by applying forward, backward, leftward, and rightward force to the machine body A. Specifically, as shown in FIGS. 10 to 14, the machine head B can actively move through a driving structure, and when a force is applied to the first connecting member 12 through the machine body A, when the force does not pass through the axis of the rotating member 11, a bias torque can be generated, so that the machine head B can be controlled to rotate accordingly.

In practical application, while the machine body A keeps one direction, the direction of each angle of the machine head B can be controlled by the push-pull connection mechanism 1.

As shown in FIGS. 3 and 4, in the embodiment, the push-pull connection mechanism 1 further includes:

• • a positioning shaft 13 mounted on the machine head B, wherein the rotating member 11 is coated on the positioning shaft 13, and an axis of the positioning shaft 13 is coincidental to the rotation axis Z1 of the rotating member;
  • a protective member 14 positioned outside the positioning shaft 13, and at least part of the structure of the rotating member 11 is positioned between the protective member 14 and the positioning shaft 13.

At least part of the structure of the rotating member 11 is positioned between the protective member 14 and the positioning shaft 13, and the protective member 14 can protect or limit the rotating member 11 to ensure the reliable and stable work of the rotating member 11.

As shown in FIGS. 3 and 4, in the embodiment, the protective member 14 is provided with a cylindrical inner side wall 141, the cylindrical inner side wall 141 is provided with an arc-shaped groove 1411, and the rotating member 11 is provided with a bump 111 extending into the arc-shaped groove 1411, and the bump 111 moves in the arc-shaped groove 1411 when the rotating member 11 rotates relative to the machine head B.

The protective member 14 is provided with the cylindrical inner side wall 141, which can better define and protect the rotating member 11; by providing the arc-shaped groove 1411 and the bump 111, the rotation amplitude of the rotating member 11 relative to the machine head B can be defined; by matching the bump 111 with the side wall of the arc-shaped groove 1411, a better control effect can be achieved.

In practical application, the structure for restricting the rotation of the rotating member 11 may not be provided, that is, the arc-shaped groove 1411 and the bump 111 may not be provided, and the rotating member 11 may be rotated by 360°.

In practical application, the rotating member 11 may also be coated on the positioning shaft 13 by means of a circumferentially rollable element (which can be a bearing).

As shown in FIGS. 1, 2, 5 and 6, in the embodiment, the floor cleaning machine further includes a limiting structure, and the limiting structure includes:

• • a positioning groove 121 arranged on the first connecting member 12;
  • a limiting member 33 movably arranged on the machine body A, and the limiting member 33 is provided with a limiting part 331 for being clamped into the positioning groove 121;
  • a linkage member 34 being connected with the limiting member 33 and used for driving the limiting member 33 to move.

When the limiting part 331 of the limiting member 33 is clamped into the positioning groove 121 of the first connecting member 12, the machine body A and the first connecting member 12 can be defined, and the machine body A will not fall down after the hand is released; in addition, the design of the limiting structure enables the weight of the machine body A no longer compress the operator's hand.

As shown in FIGS. 2 and 5, in the embodiment, the machine body A includes a second connecting member 35, wherein the limiting member 33 is movably arranged on the second connecting member 35, the second connecting member 35 is rotatably mounted on the first connecting member 12 (the rotation axis X of the second connecting member is the rotation axis Z3 of the machine body), and a plurality of positioning grooves 121 are provided, and the plurality of positioning grooves 121 are distributed at intervals around the rotation axis X of the second connecting member.

In the embodiment, the rotation axis X of the second connecting member is arranged horizontally; the machine body A is provided with a plurality of working positions, and when at different working positions, the angles between the machine body A and the floor are different, and the limiting part 331 of the limiting member 33 is clamped into different positioning grooves 121.

As shown in FIGS. 2 and 5, in the embodiment, the positioning groove 121 is provided with two limiting side walls 1211, and the limiting side walls 1211 match the limiting part 331 to define the position of the limiting part 331;

In practical application, it can be set as follows: referring to FIG. 7, at least one positioning groove 121 is a movable groove, and when the limiting part 331 is clamped into the movable groove, the limiting part 331 and at least one limiting side wall 1211 of the movable groove have a movable space 1212, and the machine body A can drive the limiting part 331 to rotate in the movable groove.

The movable groove is longer than the ordinary positioning groove 121 in the circumferential direction, so that when the limiting part 331 is clamped into the movable groove, the machine body A can also rotate slightly, which is convenient for operators of different heights to freely adjust the height of the machine body A (that is, adjust the height of the grip handle on the machine body A).

As shown in FIG. 2, in the embodiment, the limiting member 33 is slidably arranged on the second connecting member 35, and the limiting structure further includes an elastic member (not shown) arranged on the second connecting member 35 or the machine body A for driving the limiting member 33 to slide toward one side of the first connecting member 12;

• • the machine body A is rotatably provided with an unlocking member 36, one end of the linkage member 34 is connected with the unlocking member 36, and the rotation of the unlocking member 36 enables the linkage member 34 to drive the limiting member 33 to slide to the side away from the positioning groove 121.

In one of the embodiments of the invention, the unlocking member 36 is arranged on an upper part of the machine body A.

This arrangement facilitates the operation of the unlocking member 36 without the need for the operator to squat. In practical application, the unlocking member 36 can be a pressing handle.

As shown in FIGS. 2 and 5, in the embodiment, the second connecting member 35 is provided with a channel 353 for the limiting member 33 and the linkage member 34 to pass through, a lower end of the second connecting member 35 is provided with two oppositely arranged connecting parts 351, the two connecting parts 351 are respectively located on both sides of the first connecting member 12, the two connecting parts 351 rotatably match the first connecting member 12 through a connecting shaft (not shown), the two connecting parts 351 form an mounting groove 352, a bottom wall of the mounting groove 352 is provided with a through hole 3521 communicated with the channel 353, and the limiting part 331 penetrates the through hole 3521;

• • the first connecting member 12 is provided with at least one limiting block 122, and the limiting block 122 is used for cooperating with the second connecting member 35 to define a rotation angle of the second connecting member 35 relative to the first connecting member 12. The second connecting member 35 and the first connecting member 12 are so arranged that the entire connecting structure is stressed reliably.

As shown in FIG. 15, at least one cleaning brush disc 21 (there are two in the embodiment) is mounted at the bottom of the machine head B of the invention, the machine head B includes a driving motor (not shown) for driving the cleaning brush disc 21 to rotate, and the machine head can realize a traction force forward through a driving structure, and the driving structure includes:

• • a driving wheel 22 mounted in front of the bottom of the machine head B;
  • a driving machine (not shown) being used for driving the driving wheel 22 to rotate, so that the machine head B moves.

The machine head B can have a forward traction force through the driving structure. In the invention, the driving motor and the driving machine may be different components or the same component, and when they are the same component, the cleaning brush disc 21 and the driving wheel 22 are respectively driven through various existing power transmission structures.

In practical application, the cleaning brush disc 21 may be mounted on the machine head B by magnetic suction.

In other embodiments, a structure of the cleaning brush discs 21 can also be arranged, so that when the two cleaning brush discs 21 rotate, the machine head B can be driven to move in the set direction, that is, the forward force of the machine head B can be realized through the rotation of the cleaning brush discs 21.

As shown in FIGS. 1, 3 and 15, in the embodiment, the machine body A includes an evacuating device 31 and at least one water tank 32, and the water tank 32 is provided with a lifting handle 321; the machine head B further includes:

• • a dust suction device 23 being arranged behind the cleaning brush disc 21 and provided with a suction port 231;
  • a water suction device 24 being arranged behind the cleaning brush disc 21 and located behind the suction port 231; and
  • the evacuating device 31 cooperates with the dust suction device 23 and the water suction device 24.

The dust suction device 23 can gather garbage and suck up dirt through the suction port 231; the water suction device 24 is made of soft rubber and provided with a calculated water inlet at the front end.

In practical application, it is preferable to provide two tanks 32, one of which is for clean water and the other for dirty water. Further, the two water tanks 32 may be distributed up and down, left and right, or front and back.

At least one supportable component is provided at the bottom of the machine head B of the invention, and the supportable component is a rollable component, and is fixed at the moving or push-pull position of the machine head B by a mounting bracket. As shown in FIGS. 1, 3 and 15, in the embodiment, the supportable component is a guide traveling wheel 25, and at least one guide traveling wheel 25 is provided on both sides of the bottom of the machine head B. Preferably, the guide traveling wheel 25 is positioned at a tail of the machine head B.

The guide traveling wheel 25 has a plurality of functions, and can be used as a roller for carrying the push-pull floor cleaning machine (see FIG. 16), and can also be used as a stable support when being placed vertically. The guide traveling wheel 25 can also be used as a positioning and balancing component of the floor cleaning machine after the water suction device 24 is removed, that is, by providing the guide traveling wheel 25, the floor cleaning machine can still work normally after the water suction device 24 is removed (the floor cleaning machine has no water suction function at this moment).

As shown in FIG. 10, in the embodiment, at least one illumination lamp 26 is provided at a front portion of the machine head B. By providing the illumination lamp 26, the place with poor light can be illuminated to facilitate the operator's better operation.

In practical application, the floor cleaning machine of the invention can be powered by a battery, and at least one battery is provided on the machine head B.

As shown in FIG. 3, in the embodiment, further including a waste suction pipe 4, the waste suction pipe 4 cooperates with at least one of the dust suction device 23 and the water suction device 24, and the evacuating device 31 is used to generate negative pressure in the waste suction pipe; the machine head B is provided with a accommodating cavity 28, an the waste suction pipe 4 is reciprocally bent in the part of the accommodating cavity 28.

The reciprocating bending design of the waste suction pipe 4 can ensure that the dirty water in the waste suction pipe 4 will not flow back to the floor when the machine body A is rotated, pushed or pulled, etc.

As shown in FIGS. 1 and 3, in the embodiment, the machine body A further includes at least one hand shank control unit 32. Part of the machine head B is provided with a water discharge assembly to spray clear water to soften and neutralize the stains on the floor, a driving device drives the cleaning brushes to clean the floor, and the water suction device 24 gathers the water stains on the floor and recovers them to the water tank 32 for storage by evacuating.

In practical application, the machine head B is respectively provided with water retaining strips on the left and right sides of the cleaning brush disc group (the cleaning brush disc group includes at least one cleaning brush disc) to prevent the water flow gushing out from the side.

Embodiment II

As shown in FIG. 17, the embodiment is distinguished from Embodiment I in that the machine head B further includes a reversible support bracket 27, and the support bracket 27 is provided with a support position matching the floor; the support bracket 27 is positioned at the rear of the machine head B. When in the support position, the support bracket 27 matches the driving wheel 22 to form a height difference (the bottom of the machine head B forms an angle H with the floor), so that the cleaning brush disc 21 and/or the water suction device 24 are partially or completely disengaged from the floor.

The support bracket 27 can effectively protect the cleaning brush disc 21 and the water suction device 24, and prevent the cleaning brush disc 21 and the water suction device 24 from being deformed due to long-term static placement.

Embodiment III

As shown in FIG. 18, the embodiment is distinguished from Embodiment II in that the support bracket 27 is positioned at the front of the machine head B. When in the support position, the support bracket 27 matches the guide traveling wheel 25 to form a height difference (the bottom of the machine head B forms an angle H with the floor), so that the cleaning brush disc 21 and/or the water suction device 24 are partially or completely disengaged from the floor.

The above are merely preferred embodiments of the invention, and does not limit the scope of patent protection of the invention. Any equivalent structural transformation made using the content of the description and drawings of the invention, directly or indirectly applied in other related technical fields, is also included in the scope of protection of the invention.

Claims

1. A push-pull connection mechanism for a floor cleaning machine, wherein the floor cleaning machine comprises a machine head and a machine body, and the push-pull connection mechanism comprises: a rotating member rotatably mounted on the machine head;a first connecting member rotatably mounted on the rotating member by means of a rotating shaft, a rotation axis of the first connecting member being parallel to a rotation axis of the rotating member, the machine body rotatably matching the first connecting member, and a rotation axis of the machine body being perpendicular to the rotation axis of the first connecting member.

2. The push-pull connection mechanism for a floor cleaning machine according to claim 1, further comprising: a positioning shaft mounted on the machine head, wherein the rotating member is directly coated on the positioning shaft or is coated on the positioning shaft through a circumferentially rollable element, and an axis of the positioning shaft is coincidental to the rotation axis of the rotating member; anda protective member positioned outside the positioning shaft, wherein at least part of the structure of the rotating member is positioned between the protective member and the positioning shaft.

3. The push-pull connection mechanism for a floor cleaning machine according to claim 2, wherein the protective member is provided with a cylindrical inner side wall, the cylindrical inner side wall is provided with an arc-shaped groove, and the rotating member is provided with a bump extending into the arc-shaped groove, and the bump moves in the arc-shaped groove when the rotating member rotates relative to the machine head.

4. A floor cleaning machine, comprising a machine head, a machine body, and a push-pull connection mechanism connecting the machine head and the machine body, wherein the push-pull connection mechanism is the push-pull connection mechanism according to claim 1.

5. The floor cleaning machine according to claim 4, further comprising a limiting structure, wherein the limiting structure comprises: a positioning groove arranged on the first connecting member;a limiting member movably arranged on the machine body, and the limiting member being provided with a limiting part for being clamped into the positioning groove;a linkage member being connected with the limiting member and used for driving the limiting member to move.

6. The floor cleaning machine according to claim 5, wherein the machine body comprises a second connecting member, the limiting member is movably arranged on the second connecting member, the second connecting member is rotatably mounted on the first connecting member, and a plurality of positioning grooves are provided, and the plurality of positioning grooves are distributed at intervals around a rotation axis of the second connecting member.

7. The floor cleaning machine according to claim 6, wherein the rotation axis of the second connecting member is arranged horizontally; the machine body is provided with a plurality of working positions, and when at different working positions, the angles between the machine body and the floor are different, and the limiting parts of the limiting members are clamped into different positioning grooves.

8. The floor cleaning machine according to claim 7, wherein the positioning groove is provided with two limiting side walls, and the limiting side walls match the limiting part to define the position of the limiting part; at least one positioning groove is a movable groove, and when the limiting part is clamped into the movable groove, the limiting part and at least one limiting side wall of the movable groove have a movable space, and the machine body can drive the limiting part to rotate in the movable groove.

9. The floor cleaning machine according to claim 6, wherein the limiting member is slidably arranged on the second connecting member, and the limiting structure further comprises an elastic member arranged on the second connecting member or the machine body for driving the limiting member to slide toward one side of the first connecting member; the machine body is rotatably provided with an unlocking member, one end of the linkage member is connected with the unlocking member, and the rotation of the unlocking member enables the linkage member to drive the limiting member to slide to the side away from the positioning groove.

10. The floor cleaning machine according to claim 6, wherein the second connecting member is provided with a channel for the limiting member and the linkage member to pass through, a lower end of the second connecting member is provided with two oppositely arranged connecting parts, the two connecting parts are respectively located on both sides of the first connecting member, the two connecting parts rotatably match the first connecting member through a connecting shaft, the two connecting parts form an mounting groove, a bottom wall of the mounting groove is provided with a through hole communicated with the channel, and the limiting part penetrates the through hole; the first connecting member is provided with at least one limiting block, and the limiting block is used for cooperating with the second connecting member to define a rotation angle of the second connecting member relative to the first connecting member.