Lifting device for maintenance of speed reducer

Abstract

The utility model discloses a lifting device for speed reducer maintenance, which belongs to the auxiliary field of speed reducer maintenance and comprises a base, supporting frames are arranged on two sides of the top of the base, a lifting plate is slidably connected between the two supporting frames and used for placing a speed reducer, two groups of limiting parts are rotatably connected to the top of the lifting plate, and the limiting parts are used for limiting the speed reducer. Each limiting piece comprises an inner groove formed in the top of the lifting plate, a supporting part is arranged on the top of each inner groove, and limiting parts are arranged on the two sides of the bottom of each supporting part. By arranging the rotatable limiting piece and the conical spring structure, the limiting part can be automatically triggered to clamp inwards after the speed reducer is placed, no extra tool is needed for fixing, the maintenance efficiency is remarkably improved, the arc-shaped groove and the cavity structure on the inner side of the limiting part can adapt to speed reducers of different sizes, clamping force can be buffered, surface damage is avoided, and the service life of the speed reducer is prolonged. The auxiliary grooves are matched with the guide rails to ensure no deviation in the lifting process, and operation stability is enhanced.

Description

A lifting device for speed reducer maintenance Technical Field

[0001] This utility model belongs to the field of auxiliary technology for speed reducer maintenance, and specifically relates to a lifting device for speed reducer maintenance. Background Technology

[0002] A speed reducer, also known as a gearbox, is an independent component consisting of gear transmission, worm transmission, or gear and worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine. It plays a role in matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery. Speed ​​reducers need to be maintained regularly after a period of use.

[0003] For example, CN 219489467 U discloses a lifting device for speed reducer maintenance. Although this device uses two motor power shafts to drive two threaded rods to rotate, which in turn pushes two sliding blocks and two limit rods to rise, and the two sliding blocks drive the support plate to rise, the support plate can lift the speed reducer during the rising process, thus facilitating the maintenance of the speed reducer, in actual operation, the speed reducer is directly placed on the top of the lifting plate. When limiting the speed reducer, external auxiliary tools are required to ensure the stability of the speed reducer during maintenance, which increases the operation steps and reduces maintenance efficiency. Therefore, this utility model provides a lifting device for speed reducer maintenance. Summary of the Invention

[0004] The purpose of this utility model is to provide a lifting device for speed reducer maintenance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for speed reducer maintenance, comprising a base, with support frames on both sides of the top of the base, and a lifting plate slidably connected between the two support frames. The lifting plate is used to place the speed reducer, and two sets of limiting members are rotatably connected to the top of the lifting plate. Each set of limiting members includes an inner groove formed on the top of the lifting plate, a support portion on the top of the inner groove, and limiting portions on both sides of the bottom of the support portion.

[0006] In a preferred embodiment, a sliding block is slidably connected inside the support portion, and a conical spring is fixedly connected to both sides of the bottom of the sliding block, with the bottom end of the conical spring fixedly connected to the bottom of the inner groove.

[0007] In a preferred embodiment, a connecting cavity is provided at the bottom of both sides of the sliding block, and a connecting part is rotatably connected inside the connecting cavity. A first connecting rod is provided at the other end of the connecting part, and the connection between the first connecting rod and the connecting part is rotatably connected inside the inner groove.

[0008] In a preferred embodiment, each of the limiting parts is connected to the outward end of the first connecting rod, and an arc-shaped groove is provided on the opposing surfaces of the two oppositely arranged limiting parts, and a cavity is opened inside the limiting part.

[0009] In a preferred embodiment, a motor is fixedly connected to the top of each support frame, a drive screw is fixedly connected to the output shaft of the motor, and a lifting block is fixedly connected to one end of the lifting plate via an external thread on the drive screw.

[0010] In a preferred embodiment, the inner cavity of the support frame is provided with limiting teeth on both sides, and the lifting block is provided with electric telescopic rods at both ends facing the limiting teeth. The telescopic ends of the electric telescopic rods are provided with fixing teeth that are adapted to the limiting teeth.

[0011] In a preferred embodiment, the lifting plate is provided with two auxiliary slots at both ends, and each support frame is provided with a guide rail adapted to the auxiliary slot on the side facing the auxiliary slot.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This gearbox maintenance lifting device, by setting a rotatable limiting part and a conical spring structure, can automatically trigger the limiting part to clamp inward after the gearbox is placed, without the need for additional tools to fix it, which significantly improves maintenance efficiency.

[0014] The lifting device for speed reducer maintenance features an arc-shaped groove and cavity structure on the inner side of the limiting part, which can adapt to speed reducers of different sizes and buffer the clamping force to avoid surface damage. The auxiliary groove works with the guide rail to ensure no deviation during the lifting process and enhance operational stability. Attached Figure Description

[0015] Figure 1 is a front view of the structure of this utility model;

[0016] Figure 2 is a side view of the structure of this utility model;

[0017] Figure 3 is a cross-sectional view of the structure of this utility model;

[0018] Figure 4 is an enlarged view of point A in Figure 3.

[0019] In the diagram: 1. Base; 2. Support frame; 201. Lifting block; 202. Drive screw; 203. Limiting tooth; 204. Electric telescopic rod; 205. Fixing tooth; 206. Guide rail; 3. Motor; 4. Lifting plate; 401. Auxiliary groove; 402. Inner groove; 403. Support part; 404. Sliding block; 4041. Conical spring; 405. First connecting rod; 406. Connecting part; 407. Limiting part; 408. Arc-shaped groove; 409. Cavity. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please refer to Figures 1-4. This utility model provides a lifting device for speed reducer maintenance, including a base 1. Support frames 2 are provided on both sides of the top of the base 1. A lifting plate 4 is slidably connected between the two support frames 2. A motor 3 is fixedly connected to the top of each support frame 2. A drive screw 202 is fixedly connected to the output shaft of the motor 3. A lifting block 201 is fixedly connected to one end of the lifting plate 4 via an external thread on the drive screw 202. Limiting teeth 203 are provided on both sides of the inner cavity of the support frame 2. Electric telescopic rods 204 are provided at both ends of the lifting block 201 facing the limiting teeth 203. Fixed teeth 205 that are adapted to the limiting teeth 203 are provided on the telescopic end of the electric telescopic rod 204. Two auxiliary grooves 401 are provided at both ends of the lifting plate 4. A guide rail 206 that is adapted to the auxiliary groove 401 is provided on the side of each support frame 2 facing the auxiliary groove 401.

[0023] The motor 3 is started, driving the screw 202 to rotate. Through the threaded transmission, the lifting block 201 moves up and down along the support frame 2. The lifting block 201 drives the lifting plate 4 to move synchronously. The auxiliary groove 401 cooperates with the guide rail 206 to ensure that the lifting process is smooth and without deviation. When the lifting plate 4 reaches the target height, the electric telescopic rod 204 extends, so that the fixed tooth 205 and the limit tooth 203 engage and lock the position. During maintenance work, the electric telescopic rod 204 remains extended, forming a double mechanical lock. The self-locking characteristic of the drive screw 202 provides the first layer of protection, and the engagement of the fixed tooth 205 and the limit tooth 203 forms the second layer of protection. The cooperation between the guide rail 206 and the auxiliary groove 401 reduces the lifting resistance.

[0024] In this embodiment, the lifting plate 4 is used to place the speed reducer. Two sets of limiting members are rotatably connected to the top of the lifting plate 4. Each set of limiting members includes an inner groove 402 formed in the top of the lifting plate 4. A support portion 403 is provided at the top of the inner groove 402. Limiting portions 407 are provided on both sides of the bottom of the support portion 403. A sliding block 404 is slidably connected inside the support portion 403. Conical springs 4041 are fixedly connected to both sides of the bottom of the sliding block 404. The bottom end of the conical spring 4041 is connected to the bottom of the inner groove 402. The sliding block 404 is fixedly connected. Both sides of the bottom of the sliding block 404 are provided with connecting cavities. The connecting cavities are rotatably connected with connecting parts 406. The other end of the connecting part 406 is provided with a first connecting rod 405. The connection between the first connecting rod 405 and the connecting part 406 is rotatably connected to the inside of the inner groove 402. Each limiting part 407 is connected to the outward end of the first connecting rod 405. The opposing surfaces of the two opposing limiting parts 407 are provided with arc-shaped grooves 408. The inside of the limiting part 407 is provided with a cavity 409.

[0025] The speed reducer is placed on the support part 403 of the lifting plate 4. Its weight presses down on the sliding block 404, compressing the conical spring 4041. When the sliding block 404 moves down, it pushes the first connecting rod 405 outward through the connecting part 406, causing the limiting parts 407 on both sides to rotate inward and clamp the speed reducer. The arc-shaped groove 408 fits the speed reducer housing, increasing the contact area. The cavity 409 provides elastic buffering to avoid damage to the equipment from rigid clamping. If there is a deviation in the size or placement of the speed reducer, the elastic deformation of the conical spring 4041 allows the sliding block 404 to finely adjust its horizontal position, ensuring that the limiting part 407 applies force evenly. After the speed reducer is removed, the conical spring 4041 rebounds, pushing the sliding block 404 up. The first connecting rod 405 drives the limiting part 407 to automatically return to the unfolded state.

[0026] The mechanical linkage enables "placement and locking," eliminating the need for manual operation or auxiliary tools and significantly improving maintenance efficiency. The arc-shaped groove 408 adapts to reducers of different diameters, enhancing stability. The cavity 409 provides flexible clamping, preventing scratches or overpressure damage to the equipment surface. The elastic deformation of the conical spring 4041 allows the limiting mechanism to adapt to reducers of different weights and sizes, making it highly versatile. After unloading, the mechanism automatically returns to its initial state, facilitating continuous operation and reducing manual intervention. The purely mechanical transmission has no complex circuitry, resulting in a low failure rate and suitability for harsh maintenance environments such as oil stains and vibrations.

[0027] The working principle and usage process of this utility model are as follows: First, the reducer is placed on the support part 403 of the lifting plate 4. Its weight presses down on the sliding block 404, compressing the conical spring 4041. When the sliding block 404 moves down, it pushes the first connecting rod 405 outward through the connecting part 406, causing the limiting parts 407 on both sides to rotate inward and clamp the reducer. The arc-shaped groove 408 fits the reducer housing, increasing the contact area. The cavity 409 provides elastic buffering to avoid damage to the equipment from rigid clamping. If there is a deviation in the size or placement of the reducer, the elastic deformation of the conical spring 4041 allows the sliding block 404 to finely adjust its horizontal position, ensuring that the limiting part 407 applies force evenly. After the reducer is removed, the conical spring 4041 rebounds, pushing the sliding block 404 upward, and the first connecting rod 405... Rod 405 drives the limiting part 407 to automatically reset to the extended state, starts motor 3, drives screw 202 to rotate, drives lifting block 201 to move up and down along support frame 2 through thread transmission, and lifting block 201 drives lifting plate 4 to move synchronously. Auxiliary groove 401 cooperates with guide rail 206 to ensure smooth lifting process without deviation. When lifting plate 4 reaches the target height, electric telescopic rod 204 extends, so that fixed tooth 205 and limiting tooth 203 engage and lock position. During maintenance work, electric telescopic rod 204 remains extended, forming double mechanical locking. The self-locking characteristic of drive screw 202 provides the first layer of protection, the engagement of fixed tooth 205 and limiting tooth 203 forms the second layer of protection, and the cooperation of guide rail 206 and auxiliary groove 401 reduces lifting resistance.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting device for speed reducer maintenance, comprising a base (1), characterized in that: The base (1) has support frames (2) on both sides of its top. A lifting plate (4) is slidably connected between the two support frames (2). The lifting plate (4) is used to place the speed reducer. The top of the lifting plate (4) is rotatably connected to two sets of limiting members. Each set of limiting members includes an inner groove (402) opened on the top of the lifting plate (4). The top of the inner groove (402) is provided with a support part (403). The bottom of the support part (403) is provided with limiting parts (407) on both sides.

2. The lifting device for speed reducer maintenance according to claim 1, characterized in that: The support part (403) is slidably connected to a sliding block (404), and a conical spring (4041) is fixedly connected to both sides of the bottom of the sliding block (404). The bottom end of the conical spring (4041) is fixedly connected to the bottom of the inner groove (402).

3. The lifting device for speed reducer maintenance according to claim 2, characterized in that: The bottom of both sides of the sliding block (404) is provided with a connecting cavity, and a connecting part (406) is rotatably connected inside the connecting cavity. The other end of the connecting part (406) is provided with a first connecting rod (405), and the connection between the first connecting rod (405) and the connecting part (406) is rotatably connected inside the inner groove (402).

4. A lifting device for speed reducer maintenance according to claim 3, characterized in that: Each of the limiting parts (407) is connected to the outward end of the first connecting rod (405). The opposing surfaces of the two oppositely arranged limiting parts (407) are provided with arc-shaped grooves (408), and the interior of the limiting part (407) is provided with cavities (409).

5. The lifting device for repairing a speed reducer according to claim 1, characterized in that: Each of the support frames (2) is fixedly connected to a motor (3) at its top. A drive screw (202) is fixedly connected to the output shaft of the motor (3). The drive screw (202) is externally threaded to a lifting block (201) that is fixedly connected to one end of the lifting plate (4).

6. A lifting device for speed reducer maintenance according to claim 5, characterized in that: The support frame (2) has limiting teeth (203) on both sides of its inner cavity. The lifting block (201) has electric telescopic rods (204) at both ends facing the limiting teeth (203). The telescopic ends of the electric telescopic rods (204) are provided with fixing teeth (205) that are adapted to the limiting teeth (203).

7. A lifting device for repairing a speed reducer according to claim 1, characterized in that: The lifting plate (4) has two auxiliary slots (401) at both ends, and each support frame (2) has a guide rail (206) adapted to the auxiliary slot (401) on the side facing the auxiliary slot (401).

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