RESISTANCE REGULATION BRAKING DEVICE AND USING METHOD THEREOF

Abstract

The present invention relates to a resistance regulation braking device and a using method thereof. A stationary shaft, a wire grip, and a rotary mandrel assembly are mounted on a frame. A rotary sleeve is mounted at an upper end of the stationary shaft. A driving member is arranged between the rotary sleeve and the mandrel. An elastic slider is arranged on the stationary shaft, and is located below the rotary sleeve. A lower magnetic part is arranged on the elastic slider. An upper magnetic part arranged opposite to the lower magnetic part is arranged on the rotary sleeve. The device is not only wide in resistance regulation range, but also high in resistance regulation precision, and has various resistance regulation means.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application 202111648181.5, filed on Dec. 30, 2021, which is incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a resistance regulation braking device and a using method thereof. The resistance regulation braking device is not only wide in resistance regulation range, but also high in resistance regulation precision, has various resistance regulation means, and features a simple structure and good using stability. The present invention belongs to the technical field of fitness equipment.

BACKGROUND

An existing damping regulating mechanism is complicated in structure, and has the defects of small resistance regulation range, poor precision, single means, and the like. For example, a patent, titled “a double-scull rowing machine capable of magnetically regulating resistance”, with the Publication No. CN 210845130 U includes a main frame, a seat cushion, a damping mechanism, and grip potions for hands of an exerciser to hold. The main frame has a slide rail, and the seat cushion slidably matches with the slide rail. The double-scull rowing machine further includes a double pull rope coil spring take-up device and a magnetic control regulation mechanism. The double pull rope coil spring take-up device has a rotatable belt pulley. When at least one pull rope in the double pull rope coil spring take-up device is pulled, it drives the pulley belt to rotate. The double pull rope coil spring take-up device and the damping mechanism are respectively mounted on the main frame. The belt pulley of the double pull rope coil spring take-up device is linked with the damping mechanism, so that when the belt pulley of the double pull rope coil spring take-up device rotates, it can drive the damping mechanism to rotate. Free end portions of the two pull ropes are fixedly connected to two grip portions, respectively. The magnetic control regulation mechanism is mounted at the damping mechanism to regulate the resistance. The double-scull rowing machine includes left and right grip rings, and the grip portions are the left and right grip rings. The double-scull rowing machine includes left and right rowing bars. Bottoms of the left and right rowing bars are universally and rotatably mounted on the main frame and are located on both sides of the slide rail, respectively. The two grip portions are respectively arranged on upper portions of the left and right rowing bars. The slide rail is obliquely arranged. The damping mechanism includes a wind wheel and a center shaft. The center shaft is rotatably mounted on the main frame through a bearing. The wind wheel is fixed on the center shaft and is further in driving connection to the belt pulley through a belt, so as to provide wind resistance when the belt pulley rotates to drive the wind wheel to rotate. The damping mechanism further includes a water tank fixed on the main frame. The water tank is coated by the wind wheel to provide water resistance when the belt pulley drives the wind wheel to rotate. The magnetic control regulation mechanism includes an aluminum plate, a magnetic plate assembly, a fine tuning rotary knob, and a fine tuning wire. The aluminum plate is fixed to the center shaft. The magnetic plate assembly is mounted on the main frame and is adapted at a periphery of the aluminum plate. The fine tuning rotary knob is mounted on the main frame. A first end of the fine tuning wire is connected to the fine tuning rotary knob and a second end of the fine tuning wire is connected to the magnetic plate assembly. The magnetic plate assembly includes a plurality of magnetic blocks. The double pull rope coil spring take-up device further includes a webbing wheel shaft, two take-up devices, and two unilateral bearings. The webbing wheel shaft is mounted on the main frame. The two take-up devices are bidirectionally and rotatably mounted on the webbing wheel shaft respectively and are symmetrically located on both sides of the belt pulley. The two take-up devices are respectively linked with the belt pulley through the two unilateral bearings on both sides of the belt pulley to unilaterally drive the belt pulley to rotate. The belt pulley is provided with a first shaft sleeve. A first shaft of the belt pulley is mounted in each of the take-up device though each of the unilateral bearings. The pull rope is mounted on a first side of the take-up device, and a volute spiral spring is arranged on a second side of the take-up device. The pull rope of the take-up device is distributed in the first side close to the belt pulley. The double pull rope coil spring take-up device further includes a webbing wheel and a webbing wheel cap. The webbing wheel is mounted on the webbing wheel shaft through a bearing to bidirectionally rotate relative to the webbing wheel shaft. The volute spiral spring is mounted in the webbing wheel. The webbing wheel cap is fixed on the webbing wheel and encircles the volute spiral spring therein. The webbing wheel is provided with a mounting groove. The pull rope is mounted in the mounting groove of the webbing wheel. The webbing wheel is provided with a second shaft sleeve. A first shaft sleeve of the belt pulley is mounted in a second shaft sleeve of the webbing wheel through the unilateral bearing. The webbing wheel shaft is provided with a webbing wheel positioning sleeve matched within a space encircled by the webbing wheel and the webbing wheel cap. A first end of the volute spiral spring is clamped on the webbing wheel positioning sleeve and a second end of the volute spiral spring is clamped at a wheel rim of the webbing wheel. The device capable of magnetically regulating resistance therein has the problems.

SUMMARY

To overcome defects in the background art, the present invention designs a resistance regulation braking device and a using method thereof. The resistance regulation braking device is not only wide in resistance regulation range, but also high in resistance regulation precision, has various resistance regulation means, and features a simple structure and good using stability.

A design solution is to achieve the above design object.

1. A design is the first technical feature of the present invention. The design is as follows: a stationary shaft is arranged on the frame and is arranged parallel to a mandrel in the rotary mandrel assembly; a rotary sleeve is mounted at an upper end of the stationary shaft; a driving member is arranged between the rotary sleeve and the mandrel; when the mandrel rotates, the driving member is capable to drive the rotary sleeve to rotate around the stationary shaft; an elastic slider is arranged on a shaft body of the stationary shaft, and is located below the rotary sleeve; a lower magnetic part is arranged on the elastic slider; an upper magnetic part arranged opposite to the lower magnetic part is arranged on the rotary sleeve; and when pulled by the wire grip, the elastic slider is capable to drive the lower magnetic part to move downwards, and an elastic body in the elastic slider is compressed. The object of such a design is as follows: a user rotates the rotary knob to give an instruction to the controller; the controller controls a wire grip to work according to the instruction; and the controller controls a motor in the wire grip to further wind or unwind a guy wire, where when the guy wire is further wound, a linear bearing in an elastic slider moves downwards along a stationary shaft under an action of a tensile force of the guy wire, and at this time, the linear bearing drives a lower magnetic part to move downwards to achieve a resistance reducing operation, and at the same time, an elastic body in the elastic slider is compressed; and when the guy wire is further unwound, the linear bearing in the elastic slider moves upwards along the stationary shaft under an action of a restoring force of the elastic body, and at this time, the linear bearing drives a lower magnetic part to move upwards to achieve a resistance increasing operation. Thus, the device is not only convenient to use and operate (good man-machine interaction), but also simple and reliable (not only lowers the production cost, but also reduces the probability of failures). Meanwhile, the device features a large magnetic resistance regulation range (the number of magnets on the upper magnetic part and/or the lower magnetic part can be increased or decreased to change the attraction between the upper magnetic part and the lower magnetic part, so as to regulate the magnetic resistance to a great extent), and a good precision (under a condition that the attraction between the upper magnetic part and the lower magnetic part is determined, the user can precisely and finely regulate the magnetic resistance to a small extent by regulating the gap between the upper magnetic part and the lower magnetic part).

2. A non-magnetic metal plate is mounted on a lower end surface of the annular plate, or a non-magnetic metal plate is mounted on an upper end surface of the annular mounting plate, which is the second technical feature of the present invention. The object of such a design is as follows: the non-magnetic metal plate is mounted on the lower end surface of the annular plate, or the non-magnetic metal plate is mounted on the upper end surface of the annular mounting plate. The non-magnetic metal plate is capable to prevent contact attraction between the annular plate and the annular mounting plate, so as to avoid the condition that the resistance regulation braking device cannot work and is even destroyed.

3. A design that a limiting barrier is arranged on the stationary shaft and is located between the rotary sleeve and the elastic slider is the third technical feature of the present invention. The object of such a design is as follows: the limiting barrier is arranged to prevent contact attraction between the annular plate and the annular mounting plate.

4. A design is the fourth technical feature of the present invention. The design is as follows: the elastic slider includes a linear bearing and an elastic body, a through hole of the linear bearing is in a shape of a Chinese character “” and a diameter of a narrow hole in the through hole in the shape of the Chinese character “” matches with a diameter of the stationary shaft, and a diameter of a wide hole in the through hole in the shape of the Chinese character “” matches with an outer diameter of the elastic body, and an inner hole diameter of the elastic body matches with the diameter of the stationary shaft; the linear bearing and the elastic body are respectively sleeved on the stationary shaft and the elastic body is located below the linear bearing; a lower end surface of the elastic body contacts with an upper end surface of a bottom plate of the frame, and an upper end surface of the elastic body contacts with a top surface of the wide hole, and at this time, the elastic body supports the linear bearing in a vertical direction; and the lower magnetic part is arranged at an upper end of the linear bearing. The object of such a design is as follows: as the diameter of the narrow hole in the through hole in the shape of the Chinese character “” matches with a diameter of the stationary shaft, it can be ensured that the linear bearing is capable to move up and down stably along the stationary shaft (the linear bearing, when pulled by the wire grip, moves downwards along the stationary shaft, and moves upwards along the stationary shaft under the action of the restoring force of the elastic body). In addition, the diameter of a wide hole in the through hole in the shape of the Chinese character “” matches with an outer diameter of the elastic body, and the lower end surface of the elastic body contacts with the upper end surface of the bottom plate of the frame, and the upper end surface of the elastic body contacts with the top surface of the wide hole, and at this time, the elastic body supports the linear bearing in the vertical direction, and thus, the linear bearing and the elastic body are not mechanically clamped in the processes that the linear bearing moves up and down along the stationary shaft, thereby ensuring repeated use for tens of thousands of times. By arranging the linear bearing, when the stationary shaft and the linear bearing are matched in a plugged manner and slide relatively, the friction therebetween is rolling friction, which cannot only reduce the frictional resistance therebetween (the output power of the motor in the wire grip), but also reduce the noise level when the linear bearing moves and improve the moving smoothness of the linear bearing.

5. A design that a guy wire fixator is arranged on an outer side surface of the linear bearing, and a stopper is arranged on the bottom plate of the frame and is located right below the guy wire fixator is the fifth technical feature of the present invention. The object of such a design is as follows: by arranging the through hole in the stopper and the wire hole in the guy wire fixator, when the wire grip winds the guy wire, it is ensured that the guy wire is capable to pull the linear bearing vertically downwards. As the tensile force is small, the output power of the motor can be reduced. Moreover, the vertically downward tensile force will not form a component force in the horizontal direction, so that the service life of the elastic body is ensured. The guy wire fixator and the stopper both are simple in structure, reasonable in layout, good in using reliability, and low in production cost. In the process that the linear bearing moves downwards, a barrier plate in the stopper is capable to limit the linear bearing to prevent shortening of the service life of the elastic body and even damage of the linear bearing and the elastic body because the linear bearing moves downwards excessively.

6. A design that the driving member includes a first flywheel and a conveyor belt, the first flywheel is fixedly mounted at an upper end of the mandrel and is in driving connection to the second flywheel in the rotary sleeve through the conveyor belt, and a diameter of the second flywheel is less than a diameter of the first flywheel is the seventh technical feature of the present invention. The object of such a design is as follows: the driving member includes the first flywheel and the conveyor belt, the first flywheel is fixedly mounted at the upper end of the mandrel and is in driving connection to the second flywheel in the rotary sleeve through the conveyor belt, the diameter of the second flywheel is less than the diameter of the first flywheel, and the first flywheel is large and the second flywheel is small. Thus, the output of the magnetic resistance can be improved, so that the resistance can be regulated by multiple means (the resistance is regulated by changing the number of the magnets on the upper magnetic part and/or the lower magnetic part, changing the gap between the upper magnetic part and the lower magnetic part, and changing the ratio of the diameters of the first and second flywheels; one of the means can be selected for regulation, two of the means can be selected in a matched manner for regulation, and even the three means can be selected for regulation).

Technical solution 1. A resistance regulation braking device, including a frame, a wire grip, and a rotary mandrel assembly, the wire grip and the rotary mandrel assembly being mounted on the frame, where a stationary shaft is arranged on the frame and is arranged parallel to a mandrel in the rotary mandrel assembly; a rotary sleeve is mounted at an upper end of the stationary shaft; a driving member is arranged between the rotary sleeve and the mandrel; when the mandrel rotates, the driving member is capable to drive the rotary sleeve to rotate around the rotary sleeve; an elastic slider is arranged on a shaft body of the stationary shaft, and is located below the rotary sleeve; a lower magnetic part is arranged on the elastic slider; an upper magnetic part arranged opposite to the lower magnetic part is arranged on the rotary sleeve; and when pulled by the wire grip, the elastic slider is capable to drive the lower magnetic part to move downwards, and an elastic body in the elastic slider is compressed.

Technical solution 2: A using method of a resistance regulation braking device, involving a rotary knob and a controller, including the following steps: rotating, by a user, the rotary knob to give an instruction to the controller; controlling, by the controller, a wire grip to work according to the instruction; and controlling, by the controller, a motor in the wire grip to further wind or unwind a guy wire, where when the guy wire is further wound, a linear bearing in an elastic slider moves downwards along a stationary shaft under an action of a tensile force of the guy wire, and at this time, the linear bearing drives a lower magnetic part to move downwards to achieve a resistance reducing operation, and at the same time, an elastic body in the elastic slider is compressed; and when the guy wire is further unwound, the linear bearing in the elastic slider moves upwards along the stationary shaft under an action of a restoring force of the elastic body, and at this time, the linear bearing drives the lower magnetic part to move upwards to achieve a resistance increasing operation.

Compared with the prior art, the present invention has the following advantages: I, the resistance regulation braking device is not only large in resistance regulation range, but also high in resistance regulation precision, and has various resistance regulation means; and II, the resistance regulation braking device is not only simple in structure and low in production cost, but also good in using stability.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a three-dimensional structure of a resistance regulation braking device.

FIG. 2 is a structural schematic diagram of a front view of the three-dimensional structure of the resistance regulation braking device.

FIG. 3 is a schematic diagram of a three-dimensional structure after a stationary shaft, a rotary sleeve, and an elastic slider are assembled.

FIG. 4 is a structural schematic diagram of a front view after the stationary shaft, the rotary sleeve, and the elastic slider are assembled.

FIG. 5 is a section view of a linear bearing.

FIG. 6 is a side view of a rowing machine with the resistance regulation braking device.

In the drawings, 1-frame; 2-wire grip; 3-rotary mandrel assembly; 31-mandrel; 4-stationary shaft; 5-rotary sleeve; 51-second flywheel; 52-two bearings; 6-driving member; 61-first flywheel; 62-conveyor belt; 7-elastic slider; 71-linear bearing; 72-elastic body; 73-through hole; 74-narrrow hole; 75-wide hole; 8-lower magnetic part; 9-upper magnetic part; 10-non-magnetic metal plate; 11-limiting stopper; 12-guy wire fixator; 121-wire hole; 122-gap; 13-stopper; 131-barrier plate; 132-through hole; 133-gap I; 14-bottom plate; 141-fixing part; 15-screw; 16-transverse plate; 17-vertical plate; 18-lower transverse plate; 19-screw; 20-guy wire; 81-rotary knob; 82-controller.

DESCRIPTION OF EMBODIMENTS

Embodiment 1: referring to FIGS. 1-4, a resistance regulation braking device, including a frame 1, a wire grip 2, and a rotary mandrel assembly 3. The wire grip 2 and the rotary mandrel assembly 3 belong to the prior art, which are not repeatedly described here. The wire grip 2 and the rotary mandrel assembly 3 are mounted on the frame 1, where a stationary shaft 4 is arranged on the frame 1 and is arranged parallel to a mandrel 31 in the rotary mandrel assembly 3; the stationary shaft 4 is vertically mounted on a bottom plate 14 of the frame 1 through a fixing part 141; a rotary sleeve 5 is mounted at an upper end of the stationary shaft 4; a driving member 6 is arranged between the rotary sleeve 5 and the mandrel 31; when the mandrel 31 rotates, the driving member 6 is capable to drive the rotary sleeve 5 to rotate around the stationary shaft 4; an elastic slider 7 is arranged on the stationary shaft 4, and is located below the rotary sleeve 5; a lower magnetic part 8 is arranged on the elastic slider 7; an upper magnetic part 9 arranged opposite to the lower magnetic part 8 is arranged on the rotary sleeve 5; and when pulled by the wire grip 2, the elastic slider 7 is capable to drive the lower magnetic part 8 to move downwards, and an elastic body 72 in the elastic slider 7 is compressed.

The upper magnetic part 9 is an annular plate and the annular plate is a magnetic metal plate, and the lower magnetic part 8 is an annular mounting plate and the annular mounting plate is made of a magnet; or the upper magnetic part 9 is an annular plate and the annular plate is made of a magnet, and the lower magnetic part 8 is an annular mounting plate and the annular mounting plate is an iron plate; or the upper magnetic part 9 is an annular plate and the annular plate is made of a magnet, and the lower magnetic part 8 is an annular mounting plate and the annular mounting plate is made of a magnet. When the upper magnetic part 9 is made of the magnet, it can be either directly made of the magnet or formed by mounting a plurality of magnetic blocks on a mounting plate. When the lower magnetic part 8 is made of the magnet, it can be either directly made of the magnet or formed by mounting a plurality of magnetic blocks on a mounting plate. The advantage that the lower magnetic part 8 or the upper magnetic part 9 is formed by mounting the plurality of magnetic blocks on the mounting plate is that such a structure is low in production cost, and a user can regulate the attraction of the magnetic part by increasing or decreasing the number of the magnetic blocks. A non-magnetic metal plate 10 is mounted on a lower end surface of the annular plate, or a non-magnetic metal plate 10 is mounted on an upper end surface of the annular mounting plate. The non-magnetic metal plate 10 is an aluminum plate. A limiting barrier 11 is arranged on the stationary shaft 4 and is located between the rotary sleeve 5 and the elastic slider 7. The limiting barrier 11 is a snap ring. By arranging the snap ring, contact adsorption of the lower magnetic part 8 or the upper magnetic part 9 can be avoided.

The rotary sleeve 5 includes a second flywheel 51 and two bearings 52; the second flywheel 51 is mounted at the upper end of the stationary shaft 4 through the two bearings 52; the upper magnetic part 9 is fixedly mounted at a lower end of the second flywheel 52; and when the second flywheel 52 rotates, the upper magnetic part 9 rotates along with the second flywheel 51 around the stationary shaft 4. The second flywheel 51 and the first flywheel 61 are consistent in horizontal height.

The elastic slider 7 includes a linear bearing 71 and an elastic body 72, a through hole 73 of the linear bearing 71 is in a shape of a Chinese character “” and a diameter of a narrow hole 74 in the through hole in the shape of the Chinese character “” matches with a diameter of the stationary shaft 4, and a diameter of a wide hole 75 in the through hole in the shape of the Chinese character “” matches with an outer diameter of the elastic body 72, and an inner hole diameter of the elastic body 72 matches with the diameter of the stationary shaft 4; the linear bearing 71 and the elastic body 72 are respectively sleeved on the stationary shaft 4 and the elastic body 72 is located below the linear bearing 71; a lower end surface of the elastic body 72 contacts with an upper end surface of a bottom plate of the frame 1, and an upper end surface of the elastic body contacts with a top surface of the wide hole 75, and at this time, the elastic body 72 supports the linear bearing 71 in a vertical direction; and the lower magnetic part 8 is arranged at an upper end of the linear bearing 71. The elastic body 72 is a spring.

A guy wire fixator 12 is arranged on an outer side surface of the linear bearing71, and a stopper 13 is arranged on the bottom plate 14 of the frame 1 and is located right below the guy wire fixator 12. The guy wire fixator 12 is a Z-shaped plate. The Z-shaped plate is fixedly mounted on the linear bearing 71 through screws 19. A wire hole 121 is formed on an upper end surface of a lower transverse plate 18 in the Z-shaped plate and penetrates through upper and lower end surfaces of the lower transverse plate 18. A gap 122 is arranged on an outer side of the lower transverse plate 18, and the gap 122 and the wire hole 121 interpenetrate each other. The stopper 13 is an L-shaped plate, and a transverse plate 16 in the L-shaped plate is fixedly connected to the bottom plate 14 of the frame 1 through screws 15. A barrier plate 131 is fixedly mounted at an upper end of a vertical plate 17 in the L-shaped plate. A through hole 132 is formed in an upper end surface of the barrier plate 131 and penetrates through upper and lower end surfaces of the barrier plate 131. A gap I 133 is arranged on an outer side of the barrier plate 131, and the gap I 133 and the through hole 132 interpenetrate each other. The Z-shaped plate is located above the barrier plate 131, and the through hole 132 and the gap I 133 directly face the wire hole 121 and the gap 122. A first end of the guy wire 20 is fixed on the guy wire fixator 12, and a second end of the guy wire 20 successively passing through the wire hole 121 and the through hole 132 vertically downwards is fixedly mounted on the wire grip 2. The wire grip 2 is capable to wind and unwind the guy wire 20 (the motor 22 in the wire grip 2 rotates forwards or backwards). By arranging the through hole 131 and the wire hole 121, when the wire grip 2 winds the guy wire, it is ensured that the guy wire is capable to pull the linear bearing 71 vertically downwards. As a result of a small tensile force, the output power of the motor 22 can be reduced. Moreover, the vertically downwards tensile force will not form a component force in the horizontal direction, the component force in the horizontal direction forms stress in the horizontal direction to the elastic body 72 (i.e., the spring), so that the service life of the elastic body 72 (i.e., the spring) will be shortened in an accelerated manner. By arranging the gap I 133 and the gap 122, the guy wire may pass through the gap I 133 and the gap 122 and enters the through hole 132 and the wire hole 121 from a side surface, so that it is convenient to mount and maintain the guy wire 20. Meanwhile, the guy wire fixator 12 and the stopper 13 both are simple in structure, reasonable in layout, and are not only good in using reliability, but also low in production cost. In addition, in the process that the linear bearing 71 moves downwards, the barrier plate 131 is capable to limit the linear bearing 71 (when the barrier plate 131 contacts with the lower end surface of the lower transverse plate 18 in the Z-shaped plate), to prevent shortening of the service life of the elastic body 72 and even damage of the linear bearing 71 and the elastic body 72 because the linear bearing 71 moves downwards excessively. A plurality of transition wheels for turning and supporting the guy wire can also be arranged between the stopper 13 and the wire grip 2 to ensure smooth feeding of the guy wire 20.

The driving member 6 includes a first flywheel 61 and a conveyor belt 62; the first flywheel 61 is fixedly mounted at an upper end of the mandrel 31 and is in driving connection to the second flywheel 51 in the rotary sleeve 5 through the conveyor belt 62. The conveyor belt 62 is a belt. A diameter of the second flywheel 51 is less than a diameter of the first flywheel 61.

Embodiment 2 is based on the embodiment 1. A using method of a resistance regulation braking device, involving a rotary knob 81 and a controller 82. A user can instruct the controller 82 to regulate the magnetic resistance in different levels by rotating the rotary knob 81. The controller 82 can be an existing PLC or an existing singlechip microcomputer controller. The using method includes the following steps: rotating, by the user, the rotary knob 81 to give an instruction to the controller 82; controlling, by the controller 82, a wire grip 2 to work according to the instruction; and controlling, by the controller 82, a motor 22 in the wire grip 2 to further wind or unwind a guy wire 20, where when the guy wire 20 is further wound, a linear bearing 71 in an elastic slider 7 moves downwards along a stationary shaft 4 under an action of a tensile force of the guy wire 20, and at this time, the linear bearing71 drives the lower magnetic part 8 to move downwards to achieve a resistance reducing operation, and at the same time, an elastic body 72 in the elastic slider 7 is compressed; and when the guy wire 20 is further unwound, the linear bearing 71 in the elastic slider 7 moves upwards along the stationary shaft 4 under an action of a restoring force of the elastic body 72, and at this time, the linear bearing 71 drives a lower magnetic part 8 to move upwards to achieve a resistance increasing operation.

It is to be understood that although the design thought of the present invention is literally described in further detail in the above embodiments, the literal descriptions are merely simple literal descriptions of the design thought of the present invention rather than limiting the design thought of the present invention. Any combination, addition or modification within the design thought of the present invention all fall into the protection scope of the present invention.

Claims

1. A resistance regulation braking device, comprising a frame, a wire grip, and a rotary mandrel assembly, the wire grip and the rotary mandrel assembly being mounted on the frame, wherein a stationary shaft is arranged on the frame and is arranged parallel to a mandrel in the rotary mandrel assembly; a rotary sleeve is mounted at an upper end of the stationary shaft; a driving member is arranged between the rotary sleeve and the mandrel; when the mandrel rotates, the driving member is configured to drive the rotary sleeve to rotate around the stationary shaft; an elastic slider is arranged on a shaft body of the stationary shaft, and the elastic slider is located below the rotary sleeve; a lower magnetic part is arranged on the elastic slider; an upper magnetic part arranged opposite to the lower magnetic part is arranged on the rotary sleeve; when pulled by the wire grip, the elastic slider is configured to drive the lower magnetic part to move downwards, and an elastic body in the elastic slider is compressed; and a limiting barrier is arranged on the stationary shaft and is located between the rotary sleeve and the elastic slider.

2. The resistance regulation braking device according to claim 1, wherein the upper magnetic part is an annular plate and the annular plate is a magnetic metal plate, and the lower magnetic part is an annular mounting plate and the annular mounting plate is made of a magnet; or the upper magnetic part is the annular plate and the annular plate is made of the magnet, and the lower magnetic part is the annular mounting plate and the annular mounting plate is the magnetic metal plate; orthe upper magnetic part is the annular plate and the annular plate is made of the magnet, and the lower magnetic part is the annular mounting plate and the annular mounting plate is made of the magnet.

3. The resistance regulation braking device according to claim 2, wherein a non-magnetic metal plate is mounted on a lower end surface of the annular plate, or the non-magnetic metal plate is mounted on an upper end surface of the annular mounting plate.

4. (canceled)

5. The resistance regulation braking device according to claim 1, wherein the rotary sleeve comprises a second flywheel and two bearings; the second flywheel is mounted at the upper end of the stationary shaft through the two bearings; the upper magnetic part is fixedly mounted at a lower end of the second flywheel; and when the second flywheel rotates, the upper magnetic part rotates along with the second flywheel around the stationary shaft.

6. The resistance regulation braking device according to claim 1, wherein the elastic slider comprises a linear bearing and the elastic body, a through hole of the linear bearing is in a shape of “” and a diameter of a narrow hole portion in the through hole in the shape of “” matches with a diameter of the stationary shaft, and a diameter of a wide hole portion in the through hole in the shape of “” matches with an outer diameter of the elastic body, and an inner hole diameter of the elastic body matches with the diameter of the stationary shaft; the linear bearing and the elastic body are respectively sleeved on the stationary shaft and the elastic body is located below the linear bearing; a lower end surface of the elastic body contacts with an upper end surface of a bottom plate of the frame, and an upper end surface of the elastic body contacts with a top surface of the wide hole portion, and at this time, the elastic body supports the linear bearing in a vertical direction; and the lower magnetic part is arranged at an upper end of the linear bearing.

7. The resistance regulation braking device according to claim 6, wherein a guy wire fixator is arranged on an outer side surface of the linear bearing, and a stopper is arranged on the bottom plate of the frame and is located right below the guy wire fixator.

8. (canceled)

9. The resistance regulation braking device according to claim 1, wherein the driving member comprises a first flywheel and a conveyor belt; the first flywheel is fixedly mounted at an upper end of the mandrel and is in driving connection to a second flywheel in the rotary sleeve through the conveyor belt; and a diameter of the second flywheel is less than a diameter of the first flywheel.

10. A method of using a resistance regulation braking device, involving a rotary knob and a controller, comprising the following steps: rotating, by a user, the rotary knob to give an instruction to the controller; controlling, by the controller, a wire grip to work according to the instruction; and controlling, by the controller, a motor in the wire grip to further wind or unwind a guy wire, wherein when the guy wire is further wound, a linear bearing in an elastic slider moves downwards along a stationary shaft under an action of a tensile force of the guy wire, and at this time, the linear bearing drives a lower magnetic part to move downwards to achieve a resistance reducing operation, at a same time, an elastic body in the elastic slider is compressed; and when the guy wire is further unwound, the linear bearing in the elastic slider moves upwards along the stationary shaft under an action of a restoring force of the elastic body, and at this time, the linear bearing drives the lower magnetic part to move upwards to achieve a resistance increasing operation, wherein a limiting barrier is arranged on the stationary shaft and is located between a rotary sleeve and the elastic slider to prevent contact adsorption of the lower magnetic part or an upper magnetic part.