Air tightness detection device for worm-gear box of speed reducer

Abstract

The utility model relates to a speed reducer turbine box air tightness detection device, and belongs to the technical field of turbine box air tightness detection. The speed reducer turbine box air tightness detection device comprises a water tank, a lifting material pressing mechanism is arranged in the water tank, and feeding and discharging mechanisms are arranged on the two sides of the water tank respectively; the lifting material pressing mechanism comprises a lifting table, a positioning table, a support and a plurality of sealing pressurizing assemblies installed at the bottom of the support. The feeding and discharging mechanisms are arranged on the two sides of the water tank correspondingly, when one feeding mechanism is used for discharging, the other feeding mechanism is used for feeding, uninterrupted detection can be achieved, meanwhile, a plurality of turbine cases can be placed on the bearing plate at a time, the multiple turbine cases can be detected at a time due to the fact that the multiple sealing pressurizing assemblies are arranged, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of turbine housing airtightness testing, and in particular to a device for testing the airtightness of a gearbox turbine housing. Background Technology

[0002] A speed reducer is an independent component consisting of gear drives, worm gear drives, or gear-worm gear drives enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between a prime mover and a driven machine. It plays a role in matching speeds and transmitting torque between the prime mover and the driven machine or actuator, and its applications are extremely widespread in modern machinery.

[0003] Since the gearbox turbine housing is a casting, it is necessary to test the airtightness of the turbine housing to prevent gaps from existing. The currently used airtightness testing device can generally only test one turbine housing at a time, and cannot be tested during the loading and unloading process, resulting in low testing efficiency. Utility Model Content

[0004] The purpose of this application is to provide a device for testing the air tightness of a gearbox turbine housing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides a gearbox turbine housing airtightness testing device with the following technical solution:

[0006] A device for testing the air tightness of a gearbox turbine housing includes a water tank. A lifting and pressing mechanism is installed inside the water tank. Loading and unloading mechanisms are respectively installed on both sides of the water tank. The lifting and pressing mechanism includes a lifting platform, a positioning platform, a bracket, and multiple sealing and pressurizing components installed at the bottom of the bracket. The lifting platform is installed inside the water tank. The positioning platform is installed on the lifting platform and is driven to lift and lower. The bracket is fixed on the positioning platform. Limiting blocks are symmetrically arranged on both sides of the surface of the positioning platform. A limiting cylinder is provided on the end of the positioning platform corresponding to the limiting block. A stop block is fixed to the piston rod end of the limiting cylinder.

[0007] The loading and unloading mechanism includes a workbench and a support plate. The support plate is slidably connected to the workbench. Multiple U-shaped placement grooves are evenly arranged on the surface of the support plate. A fixing block is movably arranged on the support plate. An adjusting screw is rotatably connected to one side of the fixing block. The adjusting screw is threadedly connected to the support plate. The fixing block can press the turbine box against the U-shaped placement groove. The support plate can be matched and placed in the positioning table.

[0008] The sealing and pressurizing assembly includes a vertical cylinder and two horizontal cylinders fixedly mounted on the bracket. The piston rod ends of the vertical cylinder and the horizontal cylinders are all fixed with sealing plugs. An air inlet pipe is provided inside the sealing plug at the end of the vertical cylinder, and a pressure system is connected to the air inlet pipe.

[0009] Preferably, in order to facilitate smooth docking between the support plate and the positioning table, guide bosses are provided on both sides of the worktable surface, rollers are provided between the two guide bosses, and guide grooves are provided on the support plate corresponding to the positions of the guide bosses.

[0010] A handle is fixed to the surface of the support plate.

[0011] Preferably, for ease of adjustment, a hand crank is fixed to the end of the adjusting screw.

[0012] The sealing plug is made of rubber.

[0013] In summary, this application includes at least one of the following beneficial technical effects: the reducer turbine box air tightness testing device has loading and unloading mechanisms set on both sides of the water tank, so that when one is unloading, the other is loading, which can achieve uninterrupted testing. At the same time, multiple turbine boxes can be placed on the support plate at one time, and it is equipped with multiple sealing and pressurizing components, which can achieve testing of multiple turbine boxes at one time, greatly improving the testing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0015] Figure 2 This is a schematic diagram illustrating the structure of the support plate in the embodiments of this application.

[0016] Explanation of reference numerals in the attached drawings: 1. Water tank; 2. Lifting and pressing mechanism; 21. Lifting platform; 22. Positioning platform; 221. Limiting block; 23. Bracket; 24. Limiting cylinder; 25. Stop block; 26. Vertical cylinder; 27. Horizontal cylinder; 28. Sealing plug; 3. Loading and unloading mechanism; 31. Workbench; 311. Guide boss; 32. Bearing plate; 321. U-shaped placement groove; 322. Handle; 33. Fixing block; 34. Adjusting screw; 341. Hand crank; 35. Roller. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0018] This application discloses a device for detecting the airtightness of a gearbox turbine housing, referring to... Figure 1-2The system includes a water tank 1, a lifting and pressing mechanism 2 inside the water tank 1, and loading and unloading mechanisms 3 on both sides of the water tank 1. The lifting and pressing mechanism 2 includes a lifting platform 21, a positioning platform 22, a bracket 23, and multiple sealing and pressurizing components installed at the bottom of the bracket 23. The lifting platform 21 is installed inside the water tank 1, the positioning platform 22 is installed on the lifting platform 21 and is driven to lift by the lifting platform 21, the bracket 23 is fixed on the positioning platform 22, and limit blocks 221 are symmetrically arranged on both sides of the surface of the positioning platform 22. A limit cylinder 24 is provided at the end of the positioning platform 22 corresponding to the limit block 221, and a stop block 25 is fixed at the end of the piston rod of the limit cylinder 24.

[0019] The loading and unloading mechanism 3 includes a workbench 31 and a support plate 32. The support plate 32 is slidably connected to the workbench 31. Multiple U-shaped placement slots 321 are evenly arranged on the surface of the support plate 32. A fixing block 33 is movably arranged on the support plate 32. An adjusting screw 34 is rotatably connected to one side of the fixing block 33. The adjusting screw 34 is threadedly connected to the support plate 32. The fixing block 33 can press the turbine box against the U-shaped placement slots 321. The support plate 32 can be matched and placed in the positioning table 22. A hand crank 341 is fixed to the end of the adjusting screw 34.

[0020] The sealing and pressurizing assembly includes a vertical cylinder 26 and two horizontal cylinders 27 fixedly mounted on a bracket 23. The piston rod ends of both the vertical cylinder 26 and the horizontal cylinders 27 are fixed with sealing plugs 28. The sealing plugs 28 are made of rubber material. An air inlet pipe is provided inside the sealing plug 28 at the end of the vertical cylinder 26, and a pressure system is connected to the outside of the air inlet pipe.

[0021] Reference Figure 1 In order to facilitate the smooth docking of the support plate 32 with the positioning table 22, guide protrusions 311 are provided on both sides of the surface of the worktable 31, and rollers 35 are provided between the two guide protrusions 311. The support plate 32 is provided with guide grooves corresponding to the guide protrusions 311, and handles 322 are fixed on the surface of the support plate 32.

[0022] The implementation principle of the gearbox air tightness testing device in this application is as follows:

[0023] By setting loading and unloading mechanisms 3 on both sides of the water tank 1, one unloads while the other loads, enabling uninterrupted detection. In use, the operator places multiple turbine boxes sequentially in the U-shaped placement groove 321 on the surface of the support plate 32. Then, by adjusting the screw 34, the fixing block 33 is pushed to press the turbine box against the U-shaped placement groove 321. After that, the support plate 32 is pushed into the space between the limiting blocks 221 on the surface of the positioning table 22. The limiting cylinder 24 pushes the stop block 25 to limit the support plate 32 on the positioning table 22 (to facilitate loading, when loading from the left, the limiting cylinder 24 on the right is initially in the extended state; similarly, when loading from the right, the limiting cylinder 24 on the left is in the extended state). Finally, multiple sealing and pressurizing components work. The vertical cylinder 26 and the horizontal cylinder 27 extend to drive the sealing plug 28 to block the shaft hole of the turbine box and pressurize it with high-pressure gas. The lifting platform 21 drives the turbine box to be completely submerged into the water tank 1. The operator can then observe whether any bubbles are generated.

[0024] During this process, the workers on the other workbench 31 are unloading materials and rearranging the turbine box.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the air tightness of a gearbox turbine housing, comprising a water tank (1), characterized in that: The water tank (1) is provided with a lifting and pressing mechanism (2), and the water tank (1) is provided with loading and unloading mechanisms (3) on both sides. The lifting and pressing mechanism (2) includes a lifting platform (21), a positioning platform (22), a bracket (23) and multiple sealing and pressurizing components installed at the bottom of the bracket (23). The lifting platform (21) is located in the water tank (1). The positioning platform (22) is installed on the lifting platform (21) and is driven to lift by the lifting platform (21). The bracket (23) is fixed on the positioning platform (22). Limiting blocks (221) are symmetrically arranged on both sides of the surface of the positioning platform (22). A limiting cylinder (24) is provided at the end of the positioning platform (22) corresponding to the limiting block (221). A stop block (25) is fixed at the end of the piston rod of the limiting cylinder (24). The loading and unloading mechanism (3) includes a workbench (31) and a support plate (32). The support plate (32) is slidably connected to the workbench (31). The surface of the support plate (32) is evenly provided with a plurality of U-shaped placement grooves (321). A fixing block (33) is movably provided on the support plate (32). An adjusting screw (34) is rotatably connected to one side of the fixing block (33). The adjusting screw (34) is threadedly connected to the support plate (32). The fixing block (33) can press the turbine box against the U-shaped placement groove (321). The support plate (32) can be matched and placed in the positioning table (22).

2. The gearbox turbine airtightness testing device according to claim 1, characterized in that: The sealing and pressurizing assembly includes a vertical cylinder (26) and two horizontal cylinders (27) fixedly mounted on the bracket (23). The piston rod ends of the vertical cylinder (26) and the horizontal cylinders (27) are all fixed with sealing plugs (28). An air inlet pipe is provided inside the sealing plug (28) at the end of the vertical cylinder (26), and a pressure system is connected to the outside of the air inlet pipe.

3. The gearbox turbine airtightness testing device according to claim 1, characterized in that: The workbench (31) has guide bosses (311) on both sides of its surface, and rollers (35) are provided between the guide bosses (311) on both sides. The bearing plate (32) has guide grooves at the positions corresponding to the guide bosses (311).

4. The gearbox turbine airtightness testing device according to claim 3, characterized in that: A handle (322) is fixed to the surface of the bearing plate (32).

5. The gearbox turbine airtightness testing device according to claim 1, characterized in that: A hand crank (341) is fixed to the end of the adjusting screw (34).

6. The gearbox turbine airtightness testing device according to claim 2, characterized in that: The sealing plug (28) is made of rubber.

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