Information
-
Patent Grant
-
6386747
-
Patent Number
6,386,747
-
Date Filed
Tuesday, January 18, 200024 years ago
-
Date Issued
Tuesday, May 14, 200222 years ago
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Inventors
-
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 366 62
- 366 242
- 366 261
- 366 314
- 403 345
- 403 348
- 403 355
- 403 356
- 403 3596
- 403 360
- 403 375
- 464 137
- 464 157
- 464 149
- 108 25
- 108 110
- 108 14713
- 108 150
- 280 792
- 280 795
- 280 4734
- 280 4735
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International Classifications
-
Abstract
An improved structure of a cement mixing apparatus comprising a base frame, two supporting frames, a panel, a mixing cylinder and a transmission mechanism, characterized in that the base seat has a substantial square shaped structure having a plurality of mounting holes for screws; the supporting frame is a H-shaped structure with a plurality of mounting holes for screws to mount a reinforcing plate at the top end of the supporting frame to the base frame, the two supporting frames are mounted together with the reinforcing plate as a unit such that the base flames and two supporting frames are formed into a framework structure.
Description
BACKGROUND OF THE INVENTION
a) Technical Field of the Invention
The present invention relates to an apparatus for mixing cement, and in particular, to a cement mixing device which can be easily operated in the mixing process, or easily assembled for mixing process.
b) Description of the Prior Art
Conventional cement mixing apparatus is shown in
FIGS. 1
,
2
and
3
. The mixing apparatus has a mixing cylinder
92
mounted with a power mechanism
93
. Via a transmission shaft
94
, power is transmitted to the mixing arm
80
of the apparatus such that the mixing cylinder
92
proceeds to mix cement, sand and water. Referning to
FIGS. 1
to
4
, the bottom portion of the mixing apparatus is a frame
91
with four mounting bolts
911
at the four comers thereof. The interior of the Same
91
can accommodate the transmission mechanism
93
, which is mounted at a panel
912
on the frame
91
. The center of the panel
912
is provided with a through hole
913
for the extension of the mounting portion
931
of the transmission mechanism
93
. The bottom portion of the mixing cylinder
92
is provided with a circular hole
921
for the extension of a mounting portion
941
of the ts sion shaft
94
. The mounting portion
941
can engage with the mounting portion
931
of the transmission mechanism
93
. The bottom end of the mixing cylinder
92
has an arch-shaped slot
923
and a straight slot
922
which can be mounted with the mounting bolt
911
. The mounting bolt
911
can be secured using screws, and the mixing cylinder
92
can be fitted to the frame
91
. By removing the screws, the mixing cylinder
92
can rotate 90 degrees facilitating moving the mixing device into a house through a narrow door.
As shown in
FIG. 5
, the interior of the mixing cylinder
92
is provided with a cylinder tube
95
having mounted with bearings enclosing the transmission shaft
94
. The transmission shaft can be rotated within the cylinder tube
95
. The mixing cylinder
92
drives the cylinder tube
95
to rotate 90 degrees. One end of the transmission shaft
94
is connected to the mixing arm
80
, and the other end is connected to the transmission mechanism
93
. Power is transmitted from the transmission mechanism
93
to the mixing arm
80
.
Referring to
FIG. 6
, an outlet
924
is provided at the bottom of the mixing cylinder
92
and after the cement is mixed, it is poured out through the outlet
924
. There are drawbacks found in the conventional cement mixing device
1) The height of the mixing cylinder is higher than the height of the cart to allow pouring out of the mixed cement. Therefore, it is laborious to place the mixing materials prior to mixing.
2) The material for the mixing cylinder is thick and heavy. Therefore, the cost of making the same is high.
3) The mounting of the cylinder tube with the mixing cylinder is complicated.
4) The mixing cylinders can not be stacked together. Therefore, it is not convenient in transporting from the manufacturer to work site.
5) The alignment of the center of the transmission shaft and the transmission mechanism is difficult to achieve.
6) The storage of the entire structure of the cement mixing apparatus is difficult.
7) There are too many parts making up the apparatus. Therefore, the cost of manufacturing is expensive.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention, is to provide an improved structure of a cement mixing apparatus comprising a base frame, two supporting frame, a panel, a mixing cylinder and a transmission mechanism, characterized in that the base seat has a substantial square shaped structure having a plurality of mounting holes for screws; the supporting frame is H-shaped structure with a plurality of mounting holes for screws to mount a reinforcing plate at the top end of the supporting frame to the base frame, and the two supporting frames are mounted together with the reinforcing plate as a unit such that the base frame and two supporting frame are formed into a framework structure.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a perspective view of a conventional cement mixing apparatus.
FIG. 2
is a perspective view of a conventional cement mixing apparatus after it rotated.
FIG. 3
is a schematic view showing conventional transmission mechanism and the transmission shaft.
FIG. 4
is a perspective view of a conventional mixing cylinder.
FIG. 5
is a schematic view showing the combination of a mixing cylinder and the cylinder center.
FIG. 6
is a schematic view showing the combination of the outlet and outlet baffle plate.
FIG. 7
is a perspective view of the cement mixing apparatus of the present invention.
FIG. 8
is a perspective view of the bottom frame and the supporting frame in accordance with the present invention.
FIG. 9
is a perspective view of the panel of the cement mixing apparatus in accordance with the present invention.
FIG. 10
is a perspective view of the cement mixing apparatus after it rotated in accordance with the present invention.
FIG. 11
is a perspective view of the cement mixing apparatus after its height is elevated in accordance with the present invention.
FIG. 12
is a schematic view of the combination of the mixing cylinder and the cylinder center in accordance with the present invention.
FIG. 13
is a perspective view of another preferred embodiment of the mixing cylinder in accordance with the present invention.
FIG. 14A
is a sectional view of another preferred embodiment of the mixing cylinder in accordance with the present invention.
FIG. 14B
is an enlarged view of a portion of
FIG. 14A
;
FIG. 15A
is a schematic view of the combination of the admission mechanism and the transmission shaft in accordance with the present invention.
FIG. 15B
is an enlarged view of a portion of
FIG. 15A
;
FIG. 16
is a schematic view showing the combination of the transmission shaft and the peg in accordance with the present invention.
FIG. 17
is a sectional view showing the combination of the transmission shaft and the peg in accordance with the present invention.
FIG. 18
is a perspective view showing the combination of the outlet of the mixing cylinder and the outlet baffle plate in accordance with the present invention.
FIG. 19
is a perspective exploded view of the outlet and the outlet baffle plate in accordance with the present invention.
FIG. 20
is a perspective view showing the cement mixing apparatus for storage.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
The present apparatus for mixing cement comprises a base frame
20
, two supporting frames
10
, a panel
30
, a mixing cylinder
40
, and a transmission mechanism
60
.
Referning to
FIGS. 7 and 8
, the base frame
20
is substantially a square shape structure mounted with a plurality of wheels. A plurality of mounting holes
21
are provided on the frame
20
for the mounting with screws. The two supporting frames
10
are each H-shaped frame body having a plurality of mounting holes
11
to secure with a reinforcing plate
13
and a handle
15
. The two supporting frames
10
and the reinforcing plate
13
are combined to form as a unit The fame is shown in FIG.
8
.
Referring to
FIGS. 9
,
10
,
11
and
12
, a transmission mechanism
60
is mounted onto the panel
30
and includes a motor and a speed reducing member. The panel
30
is an arc-shaped structure, and the center thereof is a through hole
34
such that a mounting section
601
of the transmission mechanism
60
can be protruded out. A plurality of mounting holes
31
are provided on the two sides of the panel
30
and are mounted with a plurality of screws onto the supporting frame
10
. Thus, the transmission mechanism
60
and the panel
30
are supported by the two supporting frames
10
and the base frame
20
. Besides, one side of the panel
20
is provided with two mounting slots
33
corresponding to two blocks
32
. An insertion space is formed between the block
32
and the panel
30
. The bottom end of the mixing cylinder
40
is provided with a circular hole
403
to allow the transmission shaft
61
to extend outward. Two movable bolts
401
and two fasteners
402
are provided to the bottom end. The fastener
402
can hook onto the blocks
32
and the moving bolt
401
can engage with the mounting slot
33
of the panel
30
. By using screws, the mixing cylinder
40
is fitted to the panel
30
. When the screws are removed from the moving bolt
401
, the moving bolt
401
can withdraw from the mounting slot
33
. By rotating the mixing cylinder
40
, the fastener
402
can rotate 90 degrees with reference to the block
32
of the panel
30
.
Referring to
FIG. 12
, the center of the mixing cylinder
40
is provided with a circular through hole
403
. The top portion of the hole
403
is provided with abase disc
51
and a tube
50
is connected to the base disc
51
. Then the entire structure is welded together with the mixing cylinder
40
.
In combination, the bottom frame
20
and the supporting frame
10
and the reinforcing plate
13
are combined together by screws. The transmission mechanism
60
is combined with the panel
30
and can be placed within the space formed by the fame
10
. The mounting holes
11
of the supporting frame
10
are combined with the mounting holes
31
of the panel
30
at the top thereof by screws. As shown in
FIG. 10
, the height of the panel
30
is at the lowest.
The mixing cylinder
40
is located at the panel
30
, i.e., the mixing cylinder
40
is at the lowest. The transmission mechanism
60
and the transmission shaft
61
pass through the through hole
403
of the mixing cylinder
40
. Thus, the structure of the cement mixing is obtained.
In accordance with the present invention, and as shown in
FIGS. 11
,
12
,
13
,
14
A and
14
B, when the mounting hole
11
of the supporting frame
10
and the mounting hole
31
at the bottom end of the panel
30
are combined with screws, the height of the panel
30
is the highest. If maintenance or servicing is required, the screws are removed and the bottom fame
20
, the supporting frame
10
, the transmission mechanism
60
, the panel
30
and the mixing cylinder
40
are individually removed. All these parts can be placed within the interior of the mixing cylinder
40
for easy transportation and storage, which is shown in FIG.
20
.
Referring to
FIGS. 15A and 15B
, there is shown another preferred embodiment in accordance with the present invention. Mounting portions
601
,
611
are provided respectively at the transmission mechanism
60
and the transmission shaft
61
. The center of the mounting portion
601
is provided with a protruded tube
602
having a conic shape or an inverted corner facilitating mounting with the mounting portion
611
of the transmission shaft
61
.
Referning to
FIGS. 16 and 17
, the transmission shaft
61
and the mixing arm
80
are mounted together with a peg
614
. The peg
614
is first mounted at the mounting slot
612
of the transmission shaft
61
. During mixing, the transmission shaft
61
employs the peg
614
to rotate the mixing arm
80
. Thus, the peg
614
may be broken easily. In accordance with the present invention, a through hole
613
is provided to the mounting slot
612
of the mission shaft
61
such that if the peg
614
is broken, a thin rod is used to push out the broken peg
614
through the through hole
613
.
As shown in
FIGS. 18 and 19
, the cylinder base of the mixing cylinder
40
is provided with a bolt
405
. The outlet baffle plate
42
is provided with a mounting hole
422
so that the baffle plate
42
can be mounted to the bolt
405
of the mixing cylinder
40
. The bolt
405
is then fastened by screws, i.e., the outlet handle
421
of the baffle plate
42
can be rotated. The baffle plate
42
employs the bolt
405
of the mixing cylinder as the rotation center so as to open or to close the outlet
404
of the mixing cylinder
400
.
While the invention has been described with respect to a preferred embodiment, it will be clear to those skilled in the art that modifications and improvements may be made to the invention without departing from the spirit and scope of the invention. Therefore, the invention is not to be limited by the specific illustrative embodiment, but only by the scope of the appended claims.
Claims
- 1. A cement mixing apparatus comprising a base frame, two supporting frames, each said supporting frame having a top and a bottom portion, a panel adjustably mounted to the top portions of said supporting frames, said panel having a plurality of mounting holes such that the height of the panel on the supporting frames can be adjusted, a mixing cylinder tiltably coupled to the panel, and a transmission mechanism with a transmission shaft attached to the panel, wherein the base frame is substantially square-shaped and has a plurality of mounting holes, each said supporting frame being H-shaped and having reinforcing plates at the bottom portion thereof, the reinforcing plates having mounting holes which correspond to the mounting holes of said base frame and which receive fasteners to removably attach the supporting frames to the base frame, said panel being arch-shaped and having an opening therein for the transmission shaft, said transmission shaft being removably coupled to an agitator arm in the mixing cylinder for mixing the cement.
US Referenced Citations (7)