Telescopic gantry crane for maintaining speed reducer

Abstract

The utility model discloses a telescopic gantry crane for speed reducer maintenance, which relates to the technical field of speed reducer maintenance and comprises a driving motor, a speed reducer and a support seat, one side of the driving motor is connected with the speed reducer, a lifting lug is welded at the top of the driving motor, the speed reducer is placed on the upper side of the support seat, and the lifting lug is connected with the lifting lug. And a cross rod is arranged on the upper side of the supporting seat. When the telescopic gantry crane for maintenance of the speed reducer is used, the connecting mechanisms are inserted into the lifting lugs, then the limiting mechanisms are screwed on the connecting mechanisms, rigid connection between the vertical rods and the lifting lugs is achieved, the lifting lugs and the driving motor connected with the lifting lugs are lifted through the hydraulic oil cylinder, the driving motor is moved to the position close to the speed reducer after lifting, and then the lifting lugs and the driving motor are driven to rotate. At the moment, the driving motor does not shake in the moving process, so that an output shaft of the driving motor does not collide with internal parts of the speed reducer, the internal parts of the speed reducer are prevented from being damaged, and the speed reducer assembling process is safer, more stable and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer maintenance technology, specifically a telescopic gantry crane for speed reducer maintenance. Background Technology

[0002] The speed reducer mainly consists of a drive motor and a reducer. The reducer is used to convert the high speed of the drive motor to a low speed to obtain a larger torque, thereby adapting to working environments that require a large torque. When the internal parts of the reducer are damaged, the drive motor and the reducer need to be separated. This separation work needs to be carried out with the help of a gantry crane used for speed reducer maintenance.

[0003] Common gantry cranes used for speed reducer maintenance require the hooks to be attached to the lifting lugs of the drive motor. After the drive motor's output shaft is removed from the speed reducer, the gantry crane's winch is used to lift the drive motor. Then, the gantry crane is moved to remove the drive motor from the speed reducer. After the speed reducer maintenance is completed, the gantry crane's winch is used to lift the drive motor and move it back to the speed reducer position. Then, the drive motor's output shaft is inserted into the speed reducer. However, the steel cable used to lift the drive motor is flexible. When the drive motor is lifted close to the speed reducer, it is prone to shaking. When the drive motor shakes, the end of its output shaft will collide with the internal parts of the speed reducer, which can easily damage the internal parts. Therefore, this application provides a telescopic gantry crane for speed reducer maintenance to meet this requirement. Utility Model Content

[0004] The purpose of this utility model is to provide a telescopic gantry crane for speed reducer maintenance, in order to solve the problem mentioned in the background art that the steel wire rope used to lift the drive motor is flexible, and the drive motor is prone to shaking when the drive motor is lifted to a position close to the speed reducer using the steel wire rope.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic gantry crane for speed reducer maintenance, comprising a drive motor, a speed reducer and a support base, wherein one side of the drive motor is connected to the speed reducer and a lifting lug is welded to the top of the drive motor, the speed reducer is placed on the upper side of the support base, and a crossbar is provided on the upper side of the support base;

[0006] A vertical rod is welded to the bottom of the crossbar, and a connecting mechanism and a limiting mechanism are provided at the bottom of the vertical rod. The limiting mechanism includes a pressure cap that is threadedly connected to a threaded column. An inclined part is connected to one side of the pressure cap, and a pressing part is connected to one side of the inclined part. The connecting mechanism includes a connecting block that is connected to the vertical rod. A threaded column is connected to one side of the connecting block, and a lifting lug is inserted through the outer side of the threaded column. Hydraulic cylinders are symmetrically arranged on both sides of the crossbar. The tops of both hydraulic cylinders are connected to the crossbar, and a round sleeve is connected to the outer side of both hydraulic cylinders.

[0007] Preferably, the lifting lug is located between the pressure cap and the connecting block, and the opposite surfaces of the connecting block and the extrusion part are respectively attached to the two sides of the lifting lug.

[0008] Preferably, the connection between the connecting block and the threaded column is provided with a curved surface, and the outer side of the curved surface is in contact with the inner wall of the lifting lug.

[0009] Preferably, the top of the support base has a groove, and several positioning posts are fixed on the top of the support base. The tops of the multiple positioning posts are hemispherical, and the slots at the bottom of the reducer are all inserted into the positioning posts.

[0010] Preferably, a guide mechanism is provided on each of the two adjacent circular sleeves. The guide mechanism includes a guide rail connected to the support base. The outer side of the guide rail is slidably connected to the sliding sleeve. The guide rail is symmetrically arranged on the upper side of the support base.

[0011] Preferably, the outer wall of the circular sleeve is fixed with a handle, and the surface of the handle is provided with anti-slip texture, and both ends of the two guide rails are connected with limit blocks.

[0012] Preferably, the insertion dimensions of the inner wall of the sliding sleeve are adapted to the shape of the guide rail, and the guide rail is configured as an isosceles trapezoid.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When using this telescopic gantry crane for speed reducer maintenance, the connecting mechanism is inserted into the lifting lug, and then the limiting mechanism is tightened on the connecting mechanism to achieve a rigid connection between the vertical rod and the lifting lug. The lifting lug and the drive motor connected to the lifting lug are lifted by the hydraulic cylinder. After being lifted, the drive motor is moved to a position close to the speed reducer. At this time, the drive motor will not shake during the movement, so that the output shaft of the drive motor will not collide with the internal parts of the speed reducer, thereby avoiding damage to the internal parts of the speed reducer. This makes the speed reducer assembly process safer, more stable and reliable. It solves the problem that the drive motor is prone to shaking when the steel wire rope used to lift the drive motor is flexible and is used to lift the drive motor to a position close to the speed reducer. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of the telescopic gantry crane of this utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the crossbar of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the lifting lug of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the connecting block of this utility model;

[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the pressure cap of this utility model.

[0019] In the diagram: 1. Drive motor; 2. Reducer; 3. Support base; 4. Groove; 5. Guide mechanism; 6. Guide rail; 7. Sliding sleeve; 8. Hydraulic cylinder; 9. Round sleeve; 10. Horizontal bar; 11. Vertical bar; 12. Connecting mechanism; 13. Connecting block; 14. Threaded column; 15. Limiting mechanism; 16. Pressure cap; 17. Inclined part; 18. Extrusion part; 19. Lifting lug; 20. Positioning column; 21. Limiting block; 22. Curved surface. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a telescopic gantry crane for speed reducer maintenance, including a drive motor 1, a speed reducer 2 and a support base 3. One side of the drive motor 1 is connected to the speed reducer 2, and a lifting lug 19 is welded to the top of the drive motor 1. The speed reducer 2 is placed on the upper side of the support base 3, and a crossbar 10 is provided on the upper side of the support base 3.

[0022] A vertical rod 11 is welded to the bottom of the crossbar 10, and a connecting mechanism 12 and a limiting mechanism 15 are provided at the bottom of the vertical rod 11. The limiting mechanism 15 includes a pressure cap 16 that is threadedly connected to a threaded post 14. An inclined part 17 is connected to one side of the pressure cap 16, and a pressing part 18 is connected to one side of the inclined part 17. The connecting mechanism 12 includes a connecting block 13 that is connected to the vertical rod 11. A threaded post 14 is connected to one side of the connecting block 13. The outer side of the threaded post 14 is inserted through a lifting lug 19. Hydraulic cylinders 8 are symmetrically arranged on both sides of the crossbar 10. The tops of the two hydraulic cylinders 8 are connected to the crossbar 10, and a round sleeve 9 is connected to the outer side of the two hydraulic cylinders 8.

[0023] The lifting lug 19 is located between the pressure cap 16 and the connecting block 13. The opposite surfaces of the connecting block 13 and the extrusion part 18 are respectively attached to the two sides of the lifting lug 19. A curved surface 22 is provided at the connection between the connecting block 13 and the threaded column 14, and the outer side of the curved surface 22 is attached to the inner wall of the lifting lug 19. A groove 4 is provided on the top of the support base 3, and several positioning columns 20 are fixed on the top of the support base 3. The top of the multiple positioning columns 20 is hemispherical. The slots at the bottom of the reducer 2 are all inserted into the positioning columns 20.

[0024] In specific implementation, to avoid the drive motor 1 shaking during installation, before hoisting the drive motor 1, the threaded post 14 is first inserted into the lifting lug 19, and the inner wall of the pressure cap 16 is threadedly connected to the circumferential surface of the threaded post 14. At this time, the opposite surfaces of the connecting block 13 and the pressing part 18 are respectively attached to the two sides of the lifting lug 19. The connecting block 13 is used to connect the threaded post 14 and the vertical rod 11 to fix the lifting lug 19. At this time, starting the hydraulic cylinder 8 can drive the drive motor 1 to move upward through the horizontal rod 10 and the vertical rod 11. A curved surface 22 is provided at the connection between the connecting block 13 and the threaded post 14. The curved surface 22 is attached to the inner wall of the lifting lug 19. The inner wall of the lifting lug 19 is tightly fitted, which makes the connection between the connecting mechanism 12 and the lifting lug 19 more secure and stable, further improving the smoothness of the drive motor 1 during movement. The groove 4 is used to reserve space for maintenance activities of the staff. At the same time, the top of the positioning column 20 is hemispherical, which makes it easy for the positioning column 20 to be inserted into the mounting seat at the bottom of the reducer 2, thereby facilitating the positioning of the reducer 2 by the positioning column 20. This telescopic gantry crane for reducer maintenance, with the cooperation of the limiting mechanism 15, the connecting mechanism 12 and the vertical rod 11, can prevent the drive motor 1 from shaking during horizontal movement, ensuring the safety, stability and reliability of the reducer assembly process.

[0025] See Figure 1 and Figure 2It can be seen that a guide mechanism 5 is provided on one side of each of the two circular sleeves 9. The guide mechanism 5 includes a guide rail 6 connected to the support base 3. The outer side of the guide rail 6 is slidably connected to the sliding sleeve 7. The guide rail 6 is symmetrically arranged on the upper side of the support base 3. A handle is fixed on the outer wall of the circular sleeve 9, and the surface of the handle is provided with anti-slip texture. Limit blocks 21 are connected to both ends of the two guide rails 6. The insertion size of the inner wall of the sliding sleeve 7 is adapted to the shape of the guide rail 6. The guide rail 6 is an isosceles trapezoid.

[0026] In specific implementation, the circular sleeve 9 drives the sliding sleeve 7 to drive the hydraulic cylinder 8 to move horizontally along the guide rail 6. The guide rail 6 guides the horizontal movement of the hydraulic cylinder 8, thereby guiding the horizontal movement of the drive motor 1, making the horizontal movement of the drive motor 1 more stable and smooth. The circular sleeve 9 is used to connect the hydraulic cylinder 8 and the sliding sleeve 7. The guide rail 6 is an isosceles trapezoid, and the shape of the inner wall of the sliding sleeve 7 matches the shape of the guide rail 6 to increase the contact area between the guide rail 6 and the sliding sleeve 7, thereby improving the guiding ability of the sliding sleeve 7. At the same time, a handle is fixed on the outer wall of the circular sleeve 9. The surface of the handle has anti-slip texture, making it easy to move the hydraulic cylinder 8 horizontally and facilitate the horizontal movement of the drive motor 1. The limiting block 21 is used to limit the range of horizontal movement of the drive motor 1. This telescopic gantry crane for speed reducer maintenance can stably push the drive motor 1 to move back and forth on the support base 3, making the maintenance of the speed reducer simpler and more efficient.

[0027] In summary, when using this telescopic gantry crane for speed reducer maintenance, move the speed reducer to the position below the groove 4 of the support seat 3, grasp the handle and move the hydraulic cylinder 8 to the left, so that the hydraulic cylinder 8 drives the sliding sleeve 7 to move along the guide rail 6 through the sleeve 9, moving the connecting mechanism 12 to the upper left of the lifting lug 19. Then, start the hydraulic cylinder 8 to drive the horizontal bar 10 downward, and drive the connecting mechanism 12 downward to the side of the lifting lug 19 through the vertical bar 11 below the horizontal bar 10. Then, move the vertical bar 11 to the right so that the threaded post 14 of the connecting mechanism 12 is inserted into the lifting lug 19. After connecting the limiting mechanism 15 with the threaded post 14 of the connecting mechanism 12, start the hydraulic cylinder. Cylinder 8 drives the horizontal bar 10 to move upward. When the horizontal bar 10 moves, it drives the lifting lug 19 at the connecting mechanism 12 to move upward through the vertical bar 11, lifting the reducer. Then, the hydraulic cylinder 8 is moved to the right to move the reducer above the support base 3. The hydraulic cylinder 8 is started again until the slot inside the mounting base at the bottom of the reducer 2 is inserted into the positioning post 20, thus positioning the reducer 2. The connecting bolts inside the fixed drive motor 1 are removed. At the same time, the hydraulic cylinder 8 is moved to the right, so that the hydraulic cylinder 8 drives the lifting lug 19 to move to the right through the horizontal bar 10 and the vertical bar 11 until the drive motor 1 is separated from the reducer 2. After separation, the staff can perform maintenance on the reducer 2.

[0028] After maintenance, move the drive motor 1 to the left until the output shaft of the drive motor 1 is connected to the reducer 2, and fix the drive motor 1 to the side of the reducer 2 with the locking bolts. Then, rotate the limiting mechanism 15 in the opposite direction to separate the limiting mechanism 15 from the threaded column 14. After separation, move the vertical rod 11 to the left to separate the connecting mechanism 12 from the lifting lug 19. At the same time, start the hydraulic cylinder 8 to drive the connecting mechanism 12 to move upward to above the lifting lug 19. Then, move the horizontal rod 10 and the vertical rod 11 to the right to remove them from the reducer. The contents not described in detail in this instruction are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A telescopic gantry crane for speed reducer maintenance, comprising a drive motor (1), a speed reducer (2), and a support base (3), characterized in that: One side of the drive motor (1) is connected to the reducer (2), and the top of the drive motor (1) is welded with a lifting lug (19). The reducer (2) is placed on the upper side of the support base (3), and a crossbar (10) is provided on the upper side of the support base (3). The bottom of the crossbar (10) is welded with a vertical bar (11), and the bottom of the vertical bar (11) is provided with a connecting mechanism (12) and a limiting mechanism (15). The limiting mechanism (15) includes a pressure cap (16) that is threadedly connected to a threaded column (14). One side of the pressure cap (16) is connected to an inclined part (17), and one side of the inclined part (17) is connected to a pressing part (18). The connecting mechanism (12) includes a connecting block (13) that is connected to the vertical bar (11). One side of the connecting block (13) is connected to a threaded column (14). The outer side of the threaded column (14) is inserted through a lifting lug (19). Hydraulic cylinders (8) are symmetrically arranged on both sides of the crossbar (10). The tops of the two hydraulic cylinders (8) are connected to the crossbar (10), and the outer sides of the two hydraulic cylinders (8) are connected to a round sleeve (9).

2. The telescopic gantry crane for speed reducer maintenance according to claim 1, characterized in that: The lifting lug (19) is located between the pressure cap (16) and the connecting block (13), and the opposite surfaces of the connecting block (13) and the pressing part (18) are respectively attached to the two sides of the lifting lug (19).

3. A telescopic gantry crane for speed reducer maintenance according to claim 2, characterized in that: The connection between the connecting block (13) and the threaded column (14) is provided with a curved surface (22), and the outer side of the curved surface (22) is in contact with the inner wall of the lifting lug (19).

4. A telescopic gantry crane for speed reducer maintenance according to claim 1, characterized in that: The top of the support base (3) is provided with a groove (4), and a number of positioning posts (20) are fixed on the top of the support base (3). The top of the multiple positioning posts (20) is hemispherical, and the slots at the bottom of the reducer (2) are all inserted into the positioning posts (20).

5. A telescopic gantry crane for speed reducer maintenance according to claim 1, characterized in that: Each of the two circular sleeves (9) is provided with a guide mechanism (5) on one side of each side. The guide mechanism (5) includes a guide rail (6) connected to the support base (3). The outer side of the guide rail (6) is slidably connected to the sliding sleeve (7). The guide rail (6) is symmetrically arranged on the upper side of the support base (3).

6. A telescopic gantry crane for speed reducer maintenance according to claim 5, characterized in that: The outer wall of the sleeve (9) is fixed with a handle, and the surface of the handle is provided with anti-slip texture. Both ends of the two guide rails (6) are connected to limit blocks (21).

7. A telescopic gantry crane for speed reducer maintenance according to claim 5, characterized in that: The insertion dimensions of the inner wall of the sliding sleeve (7) are adapted to the shape of the guide rail (6), which is an isosceles trapezoid.

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