Speed reducer for roller

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer for a roller, which comprises a shell, a mounting shaft I and a mounting shaft II, a bevel gear I is arranged on the mounting shaft I, a connecting shaft is arranged at the top of the shell, a mounting hole is formed in the top of the shell, and a bevel gear II is arranged at one end, far away from a motor, of the connecting shaft. The two first bearings are arranged between the mounting hole and the connecting shaft, so that the mounting of the connecting shaft is realized through the arrangement of the two first bearings, and the mounting stability and the transmission stability can be ensured; a brake disc is arranged on the second mounting shaft, the shell is provided with a screw corresponding to the brake disc, the screw is provided with a connecting seat, a connecting hole is formed in the side, close to the brake disc, of the connecting seat, a magnet is arranged in the connecting hole, and a check ring is arranged on one side of the magnet, so that the magnet and the brake disc are isolated through the check ring; therefore, the magnets are prevented from being directly attracted to the brake disc and falling off from the connecting holes.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a speed reducer for a roller. Background Art

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, and is commonly used as a speed reduction transmission device between a prime mover and a working machine, and plays a role in matching the rotational speed and transmitting torque between the prime mover and the working machine or actuator.

[0003] When the speed reducer is used for a roller, bevel gear transmission is adopted inside it, and a connecting shaft with a bevel gear is connected to the driving shaft of the prime mover, that is, the motor. However, the output of the motor is relatively large, and the bevel gear at the end of the connecting shaft is a relatively small bevel gear. Therefore, the stability of the installation of the connecting shaft and the stability of the transmission in later use need to be considered during installation.

[0004] Secondly, a brake disc is built into the speed reducer, and the housing of the speed reducer is provided with screws with magnets corresponding to the brake disc. However, since there is no limit outside the magnet, the magnet may fall off, or the magnet may directly adhere to the brake disc and does not move synchronously with the screw. Summary of the Invention

[0005] The purpose of the utility model is to provide a speed reducer for a roller. By setting two bearing ones, the installation of the connecting shaft is realized, and thus the stability of the installation and the stability of the transmission can be ensured. Secondly, the setting of the retaining ring is used to isolate the magnet and the brake disc, so as to prevent the magnet from directly adhering to the brake disc and prevent the magnet from falling out of the connecting hole, thus solving the problems of the installation of the connecting shaft and the lack of limit for the magnet.

[0006] The purpose of the utility model is realized as follows:

[0007] A speed reducer for a roller includes a housing, and an installation shaft one, an installation shaft two and an output shaft are arranged inside the housing, and the installation shaft two is connected to the installation shaft one and the output shaft through gears;

[0008] A bevel gear one is arranged on the installation shaft one, and a connecting shaft for inserting the driving shaft of the motor is arranged at the top of the housing, and an installation hole for installing the connecting shaft is opened at the top of the housing. A bevel gear two is arranged at the end of the connecting shaft away from the motor, and two bearing ones are arranged between the installation hole and the connecting shaft;

[0009] A brake disc is arranged on the installation shaft two, and the housing is provided with screws corresponding to the brake disc. One end of the screw located inside the housing is provided with a connecting seat, and a connecting hole is opened on the side of the connecting seat close to the brake disc. A magnet is arranged in the connecting hole, and a retaining ring is arranged on one side of the magnet.

[0010] Preferably, a mounting seat is provided at the top of the housing, and the mounting seat is provided with a mounting hole, and the mounting seat and the motor are connected by fasteners;

[0011] A protrusion is provided on the inner wall of the mounting hole, and a convex plate is provided on the outer side of the connecting shaft, and two first bearings are symmetrically arranged on both sides of the convex plate, wherein the lower first bearing abuts against the protrusion, and a sealing element is provided between the upper first bearing and the motor.

[0012] Preferably, one end of the screw passes through the housing and is provided with a nut, and the other end of the screw is located inside the housing and is provided with a connecting seat, and the connecting seat is sleeved on the outer side of the screw, and the position of the screw is adjusted by rotating the nut.

[0013] Preferably, holes one are provided on both sides of the housing, and both ends of the first mounting shaft are respectively located in the holes one on both sides of the housing, and a second bearing is provided between the first mounting shaft and the holes one;

[0014] A first cover plate is provided on the outside of the hole one of the housing, and the first cover plate and the housing are connected by fasteners, and a first protruding part is provided on the inner side of the first cover plate, and the first protruding part abuts against the second bearing.

[0015] Preferably, holes two are provided on both sides of the housing, and both ends of the second mounting shaft are respectively located in the holes two on both sides of the housing, and a third bearing is provided between the second mounting shaft and the holes two;

[0016] A second cover plate is provided on the outside of the hole two of the housing, and the second cover plate and the housing are connected by fasteners, and a second protruding part is provided on the inner side of the second cover plate, and the second protruding part abuts against the third bearing.

[0017] Preferably, a hole three and a hole four are respectively provided on both sides of the housing, and one end of the output shaft is located in the hole three, and the other end of the output shaft passes through the hole four and is exposed, and a fourth bearing is provided between the output shaft and the hole three and between the output shaft and the hole four;

[0018] A third cover plate and a fourth cover plate are respectively provided on the outside of the hole three and the hole four of the housing, and the fourth cover plate is provided with an opening for the output shaft to pass through, and the third cover plate and the fourth cover plate are both connected to the housing by fasteners, and the third cover plate and the fourth cover plate are respectively provided with a third protruding part and a fourth protruding part, and the third protruding part and the fourth protruding part respectively abut against the corresponding fourth bearings.

[0019] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0020] The present utility model realizes the installation of the connecting shaft through the arrangement of two bearings one, thereby ensuring the stability of the installation and the stability of the transmission. Secondly, the retaining ring is arranged to isolate the magnet and the brake disc, thereby preventing the magnet from directly attracting to the brake disc and preventing the magnet from falling out of the connecting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural view of the present utility model.

[0022] Figure 2 is Figure 1 the sectional view taken along A-A in

[0023] Figure 3 is Figure 2 the enlarged schematic structural view of C in

[0024] Figure 4 is Figure 1 the sectional view taken along B-B in

[0025] Figure 5 is Figure 4 the enlarged schematic structural view of D in

[0026] Reference numerals: 1 - housing; 11 - hole one; 12 - hole two; 13 - hole three; 14 - hole four;

[0027] 2 - mounting shaft one; 21 - bevel gear one; 22 - gear two; 3 - mounting shaft two; 31 - gear one;

[0028] 32 - gear four; 4 - output shaft; 41 - gear three; 5 - motor; 51 - drive shaft; 6 - connecting shaft;

[0029] 61 - bevel gear two; 62 - convex plate; 63 - oil seal; 7 - screw; 71 - connecting seat; 72 - connecting hole;

[0030] 73 - magnet; 74 - retaining ring; 75 - nut; 8 - mounting seat; 81 - mounting hole; 82 - protrusion;

[0031] 91 - cover plate one; 911 - protrusion one; 92 - cover plate three; 93 - spacer plate one; 94 - cover plate two;

[0032] 941 - protrusion two; 95 - cover plate four; 96 - spacer plate two; 97 - spacer plate three; 10 - bearing one;

[0033] 20 - bearing two; 30 - bearing three; 40 - bearing four; 50 - brake disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following further describes in detail the specific embodiments of the present utility model with reference to the drawings.

[0035] As shown Figures 1-5 in the figure, a speed reducer for a drum includes a housing 1, and an installation shaft one 2, an installation shaft two 3 and an output shaft 4 are arranged in the housing 1, and the installation shaft two 3 is connected to the installation shaft one 2 and the installation shaft two 3 is connected to the output shaft 4 by gears.

[0036] Wherein, a bevel gear one 21 is arranged on the installation shaft one 2, and a connecting shaft 6 for inserting the driving shaft 51 of the motor 5 is arranged at the top of the housing 1, and an installation hole 81 for installing the connecting shaft 6 is opened at the top of the housing 1, and a bevel gear two 61 is arranged at one end of the connecting shaft 6 away from the motor 5, and two bearings one 10 are arranged between the installation hole 81 and the connecting shaft 6.

[0037] Therefore, in the actual use process, the installation of the connecting shaft 6 is realized through the arrangement of the two bearings one 10, and further the stability of the installation and the transmission can be ensured. This is because the bearing plays a role in supporting the mechanical rotating body, reducing the friction coefficient during its movement, and ensuring its rotation accuracy, and here a single-direction rotation is adopted, that is, the housing 1 will not rotate along with the connecting shaft 6 under the action of the bearing.

[0038] At the same time, a brake disc 50 is arranged on the installation shaft two 3, and a screw 7 is arranged on the housing 1 corresponding to the brake disc 50, and a connecting seat 71 is arranged at one end of the screw 7 located inside the housing 1, and a connecting hole 72 is opened on one side of the connecting seat 71 close to the brake disc 50, and a magnet 73 is arranged in the connecting hole 72, and a retaining ring 74 is arranged on one side of the magnet 73.

[0039] Therefore, in the actual use process, the retaining ring 74 is arranged to isolate the magnet 73 and the brake disc 50, so as to prevent the magnet 73 from directly attracting to the brake disc 50 and prevent the magnet 73 from falling out of the connecting hole 72. The retaining ring 74 is a standard part and is mainly used for axial limit to prevent other parts from axially moving.

[0040] As shown Figure 3 in the figure, the structure related to the bearing one 10 is as follows: First, an installation seat 8 is arranged at the top of the housing 1, and an installation hole 81 is opened on the installation seat 8, and the installation seat 8 is connected to the motor 5 by fasteners. The fastener is a screw.

[0041] At the same time, a protrusion 82 is arranged on the inner wall of the installation hole 81, a convex plate 62 is arranged on the outer side of the connecting shaft 6, and two bearings one 10 are arranged on both sides of the convex plate 62 symmetrically. The bearing one 10 located below abuts against the protrusion 82, and a oil seal part 63 is arranged between the bearing one 10 located above and the motor 5.

[0042] Therefore, during actual use, the first bearing 10 is installed and positioned by the protrusions 82 and the convex plates 62, and the oil seal 63 functions to seal, thereby preventing the lubricating oil from leaking out.

[0043] Moreover, corresponding to the structures of the mounting base 8 and the first bearing 10, that is, the mounting base 8 will not rotate with the connecting shaft 6 under the action of the bearing.

[0044] As Figure 5 shown, the structure related to the screw 7 is as follows: First, one end of the screw 7 passes through the housing 1 and is provided with a nut 75, and the other end of the screw 7 is located inside the housing 1 and is provided with a connecting seat 71, and the connecting seat 71 is sleeved outside the screw 7.

[0045] Therefore, during actual use, the position of the screw 7 is adjusted by rotating the nut 75.

[0046] As Figure 3 shown, the structure related to the first mounting shaft 2 is as follows: First, holes 11 are opened on both sides of the housing 1, and both ends of the first mounting shaft 2 are respectively located in the holes 11 on both sides of the housing 1, and a second bearing 20 is provided between the first mounting shaft 2 and the holes 11.

[0047] At the same time, the housing 1 is provided with a first cover plate 91 outside the holes 11, and the first cover plate 91 is connected to the housing 1 by fasteners. And a protrusion 911 is provided on the inner side of the first cover plate 91, and the protrusion 911 abuts against the second bearing 20. The fastener is a screw.

[0048] Therefore, during actual use, the rotation of the housing 1 is prevented by the setting of the second bearing 20, and the second bearing 20 is positioned in cooperation with the protrusion 911. Moreover, the setting of the first cover plate 91 protects and positions the end of the first mounting shaft 2.

[0049] Secondly, a first cushion plate 93 is also provided between the first cover plate 91 and the housing 1 to avoid wear.

[0050] As Figure 4 shown, the structure related to the second mounting shaft 3 is as follows: First, holes 12 are opened on both sides of the housing 1, and both ends of the second mounting shaft 3 are respectively located in the holes 12 on both sides of the housing 1, and a third bearing 30 is provided between the second mounting shaft 3 and the holes 12.

[0051] At the same time, the housing 1 is provided with a second cover plate 94 outside the holes 12, and the second cover plate 94 is connected to the housing 1 by fasteners. And a protrusion 941 is provided on the inner side of the second cover plate 94, and the protrusion 941 abuts against the third bearing 30.

[0052] Therefore, during actual use, the rotation of the housing 1 is prevented by the provision of the third bearing 30, and the third bearing 30 is limited in position in cooperation with the second protruding portion 941. Moreover, the second cover plate 94 is provided to protect and limit the end portion of the second mounting shaft 3.

[0053] Secondly, a second spacer 96 is also provided between the second cover plate 94 and the housing 1 to avoid abrasion. Moreover, the second mounting shaft 3 and the first mounting shaft 2 are connected by gears, that is, a first gear 31 and a second gear 22 are respectively provided on the second mounting shaft 3 and the first mounting shaft 2, and then the first gear 31 and the second gear 22 mesh with each other.

[0054] As Figure 2 shown, the structure related to the output shaft 4 is as follows: First, holes three 13 and holes four 14 are respectively formed on both sides of the housing 1, and one end of the output shaft 4 is located in the holes three 13, and the other end of the output shaft 4 passes through the holes four 14 and protrudes, and bearings four 40 are provided between the output shaft 4 and the holes three 13 and between the output shaft 4 and the holes four 14.

[0055] At the same time, a third cover plate 92 and a fourth cover plate 95 are respectively provided on the outer sides of the holes three 13 and the holes four 14 of the housing 1, and the fourth cover plate 95 is provided with an opening for the output shaft 4 to pass through, and both the third cover plate 92 and the fourth cover plate 95 are connected to the housing 1 by fasteners, and the third cover plate 92 and the fourth cover plate 95 are respectively provided with a third protruding portion and a fourth protruding portion, and the third protruding portion and the fourth protruding portion respectively abut against the corresponding bearings four 40.

[0056] Therefore, during actual use, the rotation of the housing 1 is prevented by the provision of the bearings four 40, and the bearings four 40 are limited in position in cooperation with the third protruding portion and the fourth protruding portion.

[0057] Secondly, a third spacer 97 is also provided between the third cover plate 92 and the housing 1 and between the fourth cover plate 95 and the housing 1 to avoid abrasion. Moreover, the output shaft 4 and the second mounting shaft 3 are connected by gears, that is, a third gear 41 and a fourth gear 32 are respectively provided on the output shaft 4 and the second mounting shaft 3, and then the third gear 41 and the fourth gear 32 mesh with each other.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. At the same time, the present invention is not limited by the above embodiments. Therefore, without departing from the principles and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A speed reducer for a drum, characterized in that, It includes a housing (1), and a first mounting shaft (2), a second mounting shaft (3) and an output shaft (4) are arranged inside the housing (1). Moreover, the connection between the second mounting shaft (3) and the first mounting shaft (2) and the connection between the second mounting shaft (3) and the output shaft (4) are gear connections; A bevel gear one (21) is arranged on the first mounting shaft (2), and a connecting shaft (6) for inserting the driving shaft (51) of the motor (5) is arranged at the top of the housing (1). And a mounting hole (81) for mounting the connecting shaft (6) is opened at the top of the housing (1). The connecting shaft (6) is provided with a bevel gear two (61) at the end far from the motor (5). And two first bearings (10) are arranged between the mounting hole (81) and the connecting shaft (6); A brake disc (50) is arranged on the second mounting shaft (3), and a screw (7) is arranged on the housing (1) corresponding to the brake disc (50). One end of the screw (7) located inside the housing (1) is provided with a connecting seat (71). And a connecting hole (72) is opened on the side of the connecting seat (71) close to the brake disc (50). And a magnet (73) is arranged in the connecting hole (72). And a retaining ring (74) is arranged on one side of the magnet (73).

2. The speed reducer for a roller according to claim 1, wherein: A mounting seat (8) is arranged at the top of the housing (1). And a mounting hole (81) is opened on the mounting seat (8). And the mounting seat (8) and the motor (5) are connected by fasteners; Protrusions (82) are arranged on the inner wall of the mounting hole (81). And convex plates (62) are arranged on the outer side of the connecting shaft (6). And the two first bearings (10) are arranged on both sides of the convex plate (62) symmetrically. The first bearing (10) located below abuts against the protrusion (82). And a oil seal (63) is arranged between the first bearing (10) located above and the motor (5).

3. The speed reducer for a drum according to claim 1, characterized in that: One end of the screw (7) passes through the housing (1) and is provided with a nut (75). And the other end of the screw (7) is located inside the housing (1) and is provided with a connecting seat (71). And the connecting seat (71) is sleeved on the outer side of the screw (7). The position of the screw (7) is adjusted by rotating the nut (75).

4. A speed reducer for a drum according to any one of claims 1-3, characterized in that: Holes one (11) are opened on both sides of the housing (1). And both ends of the first mounting shaft (2) are respectively located in the holes one (11) on both sides of the housing (1). And second bearings (20) are arranged between the first mounting shaft (2) and the holes one (11); A first cover plate (91) is arranged on the housing (1) outside the hole one (11). And the first cover plate (91) and the housing (1) are connected by fasteners. And a protruding part one (911) is arranged on the inner side of the first cover plate (91). And the protruding part one (911) abuts against the second bearing (20).

5. A speed reducer for a drum according to any one of claims 1-3, characterized in that: Holes two (12) are opened on both sides of the housing (1). And both ends of the second mounting shaft (3) are respectively located in the holes two (12) on both sides of the housing (1). And third bearings (30) are arranged between the second mounting shaft (3) and the holes two (12); A cover plate two (94) is provided outside the hole two (12) of the housing (1), and the cover plate two (94) is connected to the housing (1) by fasteners. A protrusion two (941) is provided inside the cover plate two (94), and the protrusion two (941) abuts against the bearing three (30).

6. A speed reducer for a drum according to any one of claims 1-3, characterized in that: Holes three (13) and holes four (14) are respectively formed on both sides of the housing (1). One end of the output shaft (4) is located inside the hole three (13), and the other end of the output shaft (4) passes through the hole four (14) and protrudes. Bearings four (40) are provided between the output shaft (4) and the hole three (13) and between the output shaft (4) and the hole four (14); A cover plate three (92) and a cover plate four (95) are respectively provided outside the hole three (13) and the hole four (14) of the housing (1). The cover plate four (95) is provided with an opening for the output shaft (4) to pass through. The cover plate three (92) and the cover plate four (95) are both connected to the housing (1) by fasteners. The cover plate three (92) and the cover plate four (95) are respectively provided with a protrusion three and a protrusion four, and the protrusion three and the protrusion four respectively abut against the corresponding bearing four (40).

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