Gearbox internal and external keyway leveling device

Abstract

This invention relates to a device for aligning the inner and outer keyways of a speed reducer at the same horizontal level. The device includes a base and a speed reducer. One end of the speed reducer has an inner keyway, and the other end has a rotating shaft. The surface of the rotating shaft furthest from the speed reducer has an outer keyway. A template seat is fixedly mounted on one top end of the base. A dummy shaft matching the speed reducer is movably connected to the middle of the template seat. A shaft locking block matching the inner keyway is fixedly connected to the end of the dummy shaft near the column support. A track is fixedly mounted on the other top end of the base. A slide rail is slidably connected to the top of the track, and a column support is fixedly mounted on the top of the slide rail. A spring column is mounted on the column support. This invention allows for quick and accurate alignment of the inner and outer keyways of the speed reducer at the same horizontal level, facilitating subsequent assembly.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, and in particular to a device for aligning the inner and outer keyways of a speed reducer with the same horizontal line. Background Technology

[0002] Gear reducers are generally used in low-speed, high-torque transmission equipment. They reduce the speed of electric motors, internal combustion engines, or other high-speed power sources by meshing a gear with fewer teeth on the input shaft with a larger gear on the output shaft. Ordinary gear reducers may also have several pairs of gears that work on the same principle to achieve the desired speed reduction effect. The ratio of the number of teeth on the large gear to the number of teeth on the small gear is the transmission ratio.

[0003] During the machining of the motor shaft, it can be ensured that the keyway direction is consistent. The reducer is an independent unit and will be inspected upon arrival. During the testing process, the orientation of the keyways inside and outside the reducer may be disrupted. However, after the motor is assembled, it is necessary to ensure that the positions of the reducer shaft extensions at both ends of the motor are consistent. Therefore, it is necessary to align the internal and external keyways of the reducer to the same horizontal line before installation.

[0004] Therefore, we proposed a device for aligning the inner and outer keyways of the reducer with the horizontal line to solve the above problems. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a device for aligning the inner and outer keyways of a speed reducer to the same horizontal line. The specific technical solution is as follows:

[0006] A device for aligning the inner and outer keyways of a speed reducer with a horizontal line includes a base and a speed reducer. One end of the speed reducer has an inner keyway, and the other end has a rotating shaft. The surface of the rotating shaft furthest from the speed reducer has an outer keyway. A template seat is fixedly mounted on one top end of the base. A dummy shaft matching the speed reducer is movably connected to the middle of the template seat. A shaft locking block matching the inner keyway is fixedly connected to the end of the dummy shaft near the column support. A track is fixedly mounted on the other top end of the base. A slide rail is slidably connected to the top of the track. A column support is fixedly mounted on the top of the slide rail. A spring column is mounted on the column support. The spring column includes an outer column, and a limiting column matching the outer keyway is provided inside the outer column. The limiting column is elastically connected inside the outer column and perpendicular to the top surface of the base.

[0007] As an improvement to the above technical solution: a number of second marking lines are provided at the center of the side of the template seat away from the column support, and the second marking lines are perpendicular to the horizontal lines. A first marking line is provided on the surface of the dummy shaft along the axial direction of the shaft locking block.

[0008] As an improvement to the above technical solution: a top groove is formed at the top of the inner side of the outer column, and a bottom groove is formed at the bottom of the inner side of the outer column. A limiting post is inserted into the bottom groove. The top of the limiting post extends through to the bottom of the top groove and is fixedly connected to a top post. A rotating handle is fixedly connected to the top of the top post. A limiting ring block arranged in a ring is fixedly connected to the middle of the inner side of the top groove. A spring body is provided between the bottom of the limiting ring block and the bottom of the top groove, and the spring body is sleeved on the bottom surface of the top post.

[0009] As an improvement to the above technical solution, the cross-sectional area of ​​the handle is T-shaped.

[0010] As an improvement to the above technical solution: a through hole matching the dummy shaft is provided at the center of the template seat, a plurality of second marking lines are evenly distributed on the outer side of one end of the through hole, and a side groove matching the shaft locking block is provided at one end of the through hole, and one end of the dummy shaft is inserted into the interior of the template seat.

[0011] As an improvement to the above technical solution: a rotating handle is fixedly connected to the end of the dummy shaft away from the template seat.

[0012] As an improvement to the above technical solution: a limit bolt is fixedly installed at the end of the track away from the template seat.

[0013] As an improvement to the above technical solution, a locking bolt is installed at one end of the slide rail.

[0014] The beneficial effects of this invention are as follows:

[0015] In this invention, when aligning the keyway horizontally, a dummy shaft is gently rotated to rotate the reducer shaft. Once the outer keyway at the reducer shaft end faces upwards, the limiting post loses resistance and falls into the outer keyway, locking the outer keyway of the shaft. After determining the direction of the outer keyway of the shaft, simply rotate the handle to fine-tune the dummy shaft, aligning the first marking line on the dummy shaft with the second marking line on the template seat at the upward position. This ensures that the inner keyway also faces upwards. This complete process allows for quick and precise alignment of the inner and outer keyways of the reducer at the same horizontal level, facilitating subsequent assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front view structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall main sectional structure of the present invention;

[0018] Figure 3 This is a side view of the template holder in this invention.

[0019] Figure 4 This is a side view of the overall structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the connection structure between the spring column and the rotating shaft in this invention;

[0021] Figure 6 This is a schematic diagram of the spring column in this invention.

[0022] Reference numerals in the attached diagram: 1. Base; 2. Rotary handle; 3. Dummy shaft; 30. First marking line; 31. Shaft locking block; 4. Template seat; 40. Second marking line; 41. Through hole; 42. Side groove; 5. Reducer; 51. Inner keyway; 52. Rotating shaft; 53. Outer keyway; 6. Spring column; 60. Top groove; 61. Outer column; 62. Bottom groove; 63. Limiting column; 64. Spring body; 65. Limiting ring block; 66. Rotary handle; 67. Top column; 7. Column bracket; 8. Slide rail; 9. Track; 10. Limiting bolt; 11. Locking bolt. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example

[0024] Please refer to Figures 1-6 A device for aligning the inner and outer keyways of a speed reducer with a horizontal line includes a base 1 and a speed reducer 5. One end of the speed reducer 5 is provided with an inner keyway 51, and the other end of the speed reducer 5 is provided with a rotating shaft 52. The surface of the rotating shaft 52 away from the speed reducer 5 is provided with an outer keyway 53. A template seat 4 is fixedly installed at one end of the top of the base 1. A dummy shaft 3 that matches the speed reducer 5 is movably connected to the middle of the template seat 4. A shaft locking block 31 that matches the inner keyway 51 is fixedly connected to one end of the dummy shaft 3 near the column support 7. A rail 9 is fixedly installed at the other end of the top of the base 1. A slide rail 8 is slidably connected to the top of the rail 9.

[0025] Furthermore, the slide rail 8 slides on the track 9 in the direction of the axis of the base 1. A column bracket 7 is fixedly installed on the top of the slide rail 8. A spring column 6 is provided on the column bracket 7. The spring column 6 includes an outer column 61. A limiting column 63 matching the outer keyway 53 is provided inside the outer column 61. The limiting column 63 is elastically connected inside the outer column 61 and is perpendicular to the top surface of the base 1.

[0026] In an optional embodiment: a plurality of second marking lines 40 are provided at the center of the side of the template base 4 away from the column support 7, and the horizontal lines of the second marking lines 40 are perpendicular to each other. A first marking line 30 is provided on the surface of the dummy shaft 3 along the axial direction of the shaft locking block 31. Specifically, the extension line of the first marking line 30 coincides with the central axial direction of the shaft locking block 31.

[0027] In an optional embodiment: a top groove 60 is provided at the top of the inner end of the outer column 61, and a bottom groove 62 is provided at the bottom of the inner end of the outer column 61;

[0028] Furthermore, the bottom end of the top groove 60 is connected to the top end of the bottom groove 62, the top end of the top groove 60 is connected to the top end of the outer column 61, and the bottom end of the bottom groove 62 is connected to the outer column 61. Both the top groove 60 and the bottom groove 62 are opened along the axial direction of the outer column 61. A limiting post 63 is inserted into the bottom groove 62. The top end of the limiting post 63 extends to the bottom end of the top groove 60 and is fixedly connected to a top post 67. A handle 66 is fixedly connected to the top end of the top post 67. A limiting ring block 65 arranged in a ring is fixedly connected to the middle of the inner side of the top groove 60. A spring body 64 is provided between the bottom end of the limiting ring block 65 and the bottom end of the top groove 60, and the spring body 64 is sleeved on the bottom end surface of the top post 67.

[0029] In an optional embodiment, the cross-sectional area of ​​the handle 66 is T-shaped. Specifically, the handle 66 can be used to pull the limiting post 63 and the top post 67 to move synchronously upwards towards the outer post 61, allowing the limiting post 63 to gradually move into the bottom groove 62. At the same time, the spring body 64 will be in a compressed state. By rotating the handle 66, the two ends of the handle 66 are moved away from the top groove 60, and the two ends of the handle 66 come into contact with the top surface of the outer post 61, so that the limiting post 63 and the top post 67 are locked inside the outer post 61. When the limiting post 63 is disengaged from the bottom groove 62, the handle 66 is rotated again to realign the two ends of the handle 66 with the top groove 60. Then, through the elastic force of the spring body 64, the limiting post 63 moves downwards towards the outer post 61.

[0030] In an optional embodiment: a through hole 41 matching the dummy shaft 3 is provided at the center of the template base 4, and a side groove 42 matching the shaft locking block 31 is provided at one end of the through hole 41, and one end of the dummy shaft 3 is inserted into the interior of the template base 4.

[0031] Multiple second marking lines 40 are evenly distributed on the outer side of one end of the through hole 41, and the extension line of one end of the second marking line 40 intersects the center circle of the cross-sectional area of ​​the through hole 41, so that the first marking line of the dummy shaft 3 can be aligned with the inner keyway 51 at multiple angles.

[0032] In an optional embodiment, a rotating handle 2 is fixedly connected to the end of the dummy shaft 3 away from the template seat 4. Specifically, the dummy shaft 3 can be rotated by rotating the handle 2, which facilitates the adjustment of the dummy shaft 3 and the inner keyway 51.

[0033] In an optional embodiment, a limiting bolt 10 is fixedly installed at the end of the track 9 away from the template seat 4. The limiting bolt 10 limits the slide rail 8 to prevent the slide rail 8 from detaching from the track 9.

[0034] In an optional embodiment: a locking bolt 11 is installed at one end of the slide rail 8. The locking bolt 11 is used in conjunction with the track 9. When the slide rail 8 moves to the appropriate position, the slide rail 8 is locked onto the track 9 by rotating the locking bolt 11, and the column bracket 7 and spring column 6 connected to the slide rail 8 are locked simultaneously.

[0035] When using this invention, first place it horizontally on the table, then move the slide rail 8 to the tooling limit bolt 10. Pick up the reducer 5 and align the orientation of the inner keyway 51 of the reducer 5 with the orientation of the shaft locking block 31 on the dummy shaft 3. Then, slowly push one end of the inner keyway 51 of the reducer 5 against the template seat 4. After confirming that the shaft locking block 31 on the dummy shaft 3 is engaged with the keyway of the reducer 5, lock the template seat 4 and the stop of the reducer 5 in place. The reducer 5 is now installed.

[0036] After the reducer 5 is installed, move the slide rail 8 towards the reducer 5 while simultaneously pulling up the limit post 63. Stop when the limit post 63 contacts the external keyway 53 on the shaft 52 of the reducer 5. The limit post 63 is perpendicular to the shaft 52. Then, tighten the locking bolts to fix the position of the slide rail 8. After the preparation is complete, begin the horizontal alignment of the keyway.

[0037] Specifically, for keyway leveling, taking the keyway facing upwards as an example: Gently rotate the dummy shaft 3 to rotate the reducer 5's shaft 52. When the outer keyway 53 at the end of the reducer 5's shaft 52 faces upwards, the limiting post 63 will lose resistance and fall into the outer keyway 53, locking the outer keyway 53 of the shaft 52. After determining the direction of the outer keyway 53 of the shaft 52, simply rotate the rotating handle 2 to fine-tune the dummy shaft 3, aligning the first marking line 30 on the dummy shaft 3 with the upward-facing second marking line 40 on the template seat 4. This will complete the alignment of the inner keyway 51 upwards as well. After completing this process, the leveling of the inner and outer keyways of the reducer 5 can be achieved.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for aligning the inner and outer keyways of a speed reducer with a horizontal line, comprising a base (1) and a speed reducer (5), wherein one end of the speed reducer (5) is provided with an inner keyway (51), and the other end of the speed reducer (5) is provided with a rotating shaft (52), wherein the surface of the rotating shaft (52) away from the speed reducer (5) is provided with an outer keyway (53), characterized in that, A template seat (4) is fixedly installed at one top end of the base (1). A dummy shaft (3) matching the reducer (5) is movably connected to the middle of the template seat (4). A shaft locking block (31) matching the inner keyway (51) is fixedly connected to one end of the dummy shaft (3) near the column bracket (7). A rail (9) is fixedly installed at the other top end of the base (1). A slide rail (8) is slidably connected to the top of the rail (9). A column bracket (7) is fixedly installed on the top of the slide rail (8). A spring column (6) is provided on the column bracket (7). The spring column (6) includes an outer column (61), and a limiting column (63) matching the outer keyway (53) is provided inside the outer column (61). The limiting column (63) is elastically connected inside the outer column (61) and is perpendicular to the top surface of the base (1). Several second marking lines (40) are provided at the center of the template seat (4) away from the column support (7). A first marking line (30) is provided on the surface of the dummy shaft (3) along the axial direction of the shaft locking block (31).

2. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as described in claim 1, characterized in that: The top of the outer column (61) is provided with a top groove (60), and the bottom of the outer column (61) is provided with a bottom groove (62). A limiting post (63) is inserted into the bottom groove (62). The top of the limiting post (63) extends through to the bottom of the top groove (60) and is fixedly connected to a top post (67). A handle (66) is fixedly connected to the top of the top post (67). A limiting ring block (65) is fixedly connected to the middle of the inner side of the top groove (60). A spring body (64) is provided directly between the bottom of the limiting ring block (65) and the bottom of the top groove (60), and the spring body (64) is sleeved on the bottom surface of the top post (67).

3. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as described in claim 2, characterized in that: The cross-sectional area of ​​the handle (66) is T-shaped.

4. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as described in claim 3, characterized in that: The template seat (4) has a through hole (41) at its center that matches the dummy shaft (3). Multiple second marking lines (40) are evenly distributed on the outer side of one end of the through hole (41). One end of the through hole (41) has a side groove (42) that matches the shaft locking block (31). One end of the dummy shaft (3) is inserted into the interior of the template seat (4).

5. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as described in claim 1, characterized in that: The dummy shaft (3) is fixedly connected to a rotating handle (2) at the end away from the template seat (4).

6. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as claimed in claim 1, characterized in that: A limit bolt (10) is fixedly installed at the end of the track (9) away from the template seat (4).

7. The device for aligning the inner and outer keyways of a speed reducer with the same horizontal line as claimed in claim 1, characterized in that: A locking bolt (11) is installed at one end of the slide rail (8).

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