Gearbox air tightness detection equipment

Abstract

The utility model discloses gearbox air tightness detection equipment, which comprises a workbench and a protective cover, the protective cover is fixed at the upper end of the workbench, a guide rod is arranged between the workbench and the protective cover, a lifting plate is connected onto the guide rod in a sliding manner, an air pressure detection mechanism is arranged on the protective cover and the lifting plate, and the air pressure detection mechanism is connected with the workbench. The workbench is provided with a taking and placing mechanism, the taking and placing mechanism is arranged on the two sides of the lower portion of the lifting plate, hydraulic cylinders are arranged on the two sides of the upper end of the protection cover, the output ends of the hydraulic cylinders penetrate through the protection cover to be connected with the lifting plate, and the air pressure detection mechanism comprises a lower mold, an upper mold, an air tightness detector and an air pressure sensor. The air pressure detection mechanism comprises a lower die, an upper die, an air tightness detector and an air pressure sensor, and a first conveying belt and a second conveying belt are arranged on the workbench and are arranged on the two sides of the workbench respectively. The utility model belongs to the technical field of gearbox detection, and particularly relates to gearbox air tightness detection equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of gearbox detection, and specifically refers to a gearbox air tightness detection device. Background Art

[0002] The gearbox is a mechanism used to change the speed and torque. When in use, it usually needs to come into contact with liquids such as engine oil, so its sealing performance requirements are high. It is necessary to test the air tightness of the gearbox during production. Existing gearbox air tightness testing equipment, such as a gearbox air tightness testing device disclosed in application number CN202322007017.7, consists of a water tank, a pressing assembly, a supporting part and a connecting part, which is convenient for placing the gearbox in the placement space formed by the connecting part, the supporting part and the pressing assembly, so that the gearbox can be moved in or out of the water tank as the pressing assembly moves, which is more convenient to operate.

[0003] In the actual testing process, the air tightness is tested by entering water, which requires manual participation to observe whether bubbles are generated. It is impossible to form accurate data results for the air tightness results based on experience observation, and the gearbox needs to be installed and placed manually, which not only wastes manpower but also has low efficiency. In particular, after being immersed in liquid, the surface of the gearbox is stained with liquid, and subsequent drying is required, which makes the production steps cumbersome. For this reason, we propose a gearbox air tightness detection equipment to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a gearbox air tightness detection device, which effectively solves the problem that the measurement results of the current existing gearbox air tightness detection equipment need to rely on manual experience, are prone to errors and are inconvenient for production standard molding. It also solves the problem of manual placement and installation, waste of manpower and low efficiency, and solves the problem that the gearbox needs to be dried additionally when using immersion liquid observation, and the production steps are cumbersome.

[0005] The technical solution adopted by the utility model is as follows: A gearbox air tightness detection device proposed by the utility model includes a workbench and a protective cover, the protective cover is fixed to the upper end of the workbench, a guide rod is provided between the workbench and the protective cover, a lifting plate is slidably connected to the guide rod, an air pressure detection mechanism is provided on the protective cover and the lifting plate, a pick-and-place mechanism is provided on the workbench, and the pick-and-place mechanism is provided on both sides below the lifting plate, hydraulic cylinders are provided on both sides of the upper end of the protective cover, and the output end of the hydraulic cylinder passes through the protective cover and is connected to the lifting plate.

[0006] As an improvement of the present scheme, the air pressure detection mechanism includes a lower mold, an upper mold, an air tightness detector and an air pressure sensor. The lower mold is fixedly connected to the workbench, the upper mold is fixedly connected to the bottom of the lifting plate and is arranged on the upper part of the lower mold. The upper mold and the lower mold are plug-in connected and sealed. The air tightness detector is arranged on the protective cover, and the air pressure sensor is arranged on the inner wall of the upper mold.

[0007] As an improvement of the present scheme, the lower end of the air tightness detector is connected to an air supply pipe, the lower end of the air supply pipe is rotatably connected to a rotating joint, the rotating joint passes through the lifting plate and is threadedly connected to the upper mold and is communicated with the upper mold, a data transmission connector is provided on the side wall of the upper mold, and the air pressure sensor is connected to the air tightness detector by wires via the data transmission connector.

[0008] As an improvement of the present solution, the picking and placing mechanism includes a rotating shaft, an electric telescopic rod, a clamping cylinder and a fixed plate, the rotating shaft is rotatably connected to the workbench, the electric telescopic rod is fixed to the workbench, the clamping cylinder is arranged at the end of the electric telescopic rod, and the fixed plate is rotatably connected to the output end of the clamping cylinder.

[0009] As an improvement of the present solution, a gear is fixedly connected to the rotating shaft, a guide rail is provided at the bottom of the workbench, a rack is slidably connected to the guide rail, and the rack is meshed with the gear.

[0010] As an improvement of the present solution, the two groups of racks on the same side are connected by a connecting plate, a driving cylinder is provided at the bottom of the workbench, and an output end of the driving cylinder is connected to the connecting plate.

[0011] As an improvement of the present solution, a conveyor belt 1 and a conveyor belt 2 are provided on the workbench and are respectively arranged on two sides thereof, and the conveyor belt 1 and the conveyor belt 2 are perpendicular to each other.

[0012] As an improvement of the present solution, the driving cylinder is vertically arranged to the connecting plate, the rack is parallelly arranged to the driving cylinder, the guide rod is vertically arranged to the lifting plate, and the lifting plate is parallelly arranged to the workbench.

[0013] The beneficial effects achieved by the utility model using the above structure are as follows:

[0014] 1. By using the air pressure detection method, the gearbox is placed between the upper mold and the lower mold, and air is filled inside. The air pressure sensor can accurately and digitally see the change of air pressure, which improves the detection accuracy and realizes automatic detection, which is conducive to forming a unified standard for the air tightness of the gearbox. In particular, it can avoid the need for subsequent drying operations and improve the overall production efficiency of the gearbox;

[0015] 2. It is equipped with a pick-and-place mechanism. Through the swingable electric telescopic rod, in conjunction with conveyor belt 1 and conveyor belt 2, the clamping cylinder and the fixed plate can realize the automatic pick-and-place of the gearbox, saving manpower and improving the efficiency of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a gearbox air tightness detection device from a first perspective proposed by the utility model;

[0017] Figure 2 This is a cross-sectional view of a gearbox air tightness detection device proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a gearbox air tightness detection device proposed by the utility model;

[0019] Figure 4 This is a partial cross-sectional view of a gearbox air tightness detection device proposed by the utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of a gearbox air tightness detection device from a second viewing angle proposed by the utility model.

[0021] Among them, 1. workbench; 2. protective cover; 3. guide rod; 4. lifting plate; 5. air pressure detection mechanism; 6. pick-and-place mechanism; 7. lower mold; 8. upper mold; 9. air tightness detector; 10. air pressure sensor; 11. air pipe; 12. rotating joint; 13. data transmission joint; 14. rotating shaft; 15. electric telescopic rod; 16. clamping cylinder; 17. fixed plate; 18. gear; 19. guide rail; 20. rack; 21. connecting plate; 22. driving cylinder; 23. conveyor belt 1; 24. conveyor belt 2; 25. hydraulic cylinder.

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model proposes a gearbox air tightness detection device, including a workbench 1 and a protective cover 2, the protective cover 2 is fixed to the upper end of the workbench 1, a guide rod 3 is provided between the workbench 1 and the protective cover 2, a lifting plate 4 is slidably connected to the guide rod 3, an air pressure detection mechanism 5 is provided on the protective cover 2 and the lifting plate 4, a pick-up and placement mechanism 6 is provided on the workbench 1, and the pick-up and placement mechanism 6 is arranged on both sides below the lifting plate 4, hydraulic cylinders 25 are provided on both sides of the upper end of the protective cover 2, and the output end of the hydraulic cylinder 25 passes through the protective cover 2 and is connected to the lifting plate 4.

[0025] In order to realize the digital detection of the air tightness of the gearbox, the air pressure detection mechanism 5 includes a lower mold 7, an upper mold 8, an air tightness detector 9 and an air pressure sensor 10. The lower mold 7 is fixedly connected to the workbench 1, the upper mold 8 is fixedly connected to the bottom of the lifting plate 4 and is arranged on the upper part of the lower mold 7, the upper mold 8 and the lower mold 7 are plug-in connected and sealed, the air tightness detector 9 is arranged on the protective cover 2, and the air pressure sensor 10 is arranged on the inner wall of the upper mold 8; the lower end of the air tightness detector 9 is connected to the air supply pipe 11, and the lower end of the air supply pipe 11 is rotatably connected to a rotating joint 12, the rotating joint 12 passes through the lifting plate 4 and is threadedly connected to the upper mold 8 and is connected to the upper mold 8, a data transmission connector 13 is provided on the side wall of the upper mold 8, and the air pressure sensor 10 is connected to the air tightness detector 9 by wires through the data transmission connector 13.

[0026] In order to realize automatic picking and placing of the gearbox, the picking and placing mechanism 6 includes a rotating shaft 14, an electric telescopic rod 15, a clamping cylinder 16 and a fixed plate 17. The rotating shaft 14 is rotatably connected to the workbench 1, the electric telescopic rod 15 is fixed to the workbench 1, the clamping cylinder 16 is arranged at the end of the electric telescopic rod 15, and the fixed plate 17 is rotatably connected to the output end of the clamping cylinder 16; a gear 18 is fixedly connected to the rotating shaft 14, a guide rail 19 is provided at the bottom of the workbench 1, a rack 20 is slidably connected to the guide rail 19, and the rack 20 is meshed with the gear 18; two groups of racks 20 on the same side are connected by a connecting plate 21, a driving cylinder 22 is provided at the bottom of the workbench 1, and the output end of the driving cylinder 22 is connected to the connecting plate 21.

[0027] A conveyor belt 1 23 and a conveyor belt 2 24 are provided on the workbench 1, and are respectively arranged on both sides of the workbench 1. The conveyor belt 1 23 and the conveyor belt 2 24 are perpendicular to each other; the driving cylinder 22 is vertically arranged to the connecting plate 21, the rack 20 is parallel to the driving cylinder 22, the guide rod 3 is vertically arranged to the lifting plate 4, and the lifting plate 4 is parallel to the workbench 1.

[0028] When in use, the corresponding lower mold 7 and upper mold 8 are selected according to the gearbox, and are fixed on the workbench 1 and the lifting plate 4 with bolts respectively, the rotating joint 12 is screwed onto the upper mold 8 through the lifting plate 4, so that the inner side of the upper mold 8 is connected with the air tightness detector 9 through the air pipe 11, and the gearbox is gradually sent to the end close to the protective cover 2 by using the conveyor belt 23, and the connecting plate 21 is pushed by the driving cylinder 22 to drive the rack 20 to slide along the guide rail 19, so that the gear 18 meshing with the rack 20 rotates clockwise, and the rotating shaft 14 fixedly connected to the gear 18 drives the electric telescopic rod 15 to rotate until the clamping cylinder 16 on the electric telescopic rod 15 is placed on both sides of the gearbox. At this time, the clamping cylinder 16 extends to make the fixed plate 17 clamp both sides of the gearbox, and then the driving cylinder 22 is controlled to retract, so that the electric telescopic rod 15 can rotate counterclockwise until the gearbox is placed in the lower mold 7. , the clamping cylinder 16 retracts to release the gearbox, and then the hydraulic cylinder 25 is opened to push the lifting plate 4 to move downward along the guide rod 3 until the upper mold 8 provided at the bottom of the lifting plate 4 is inserted into the lower mold 7 and sealed, and the air tightness detector 9 is opened to input air at a constant pressure into the lower mold 7 and the upper mold 8, and maintain it for a period of time, and use the air pressure sensor 10 to detect the pressure change between the lower mold 7 and the upper mold 8, and feed it back to the screen of the air tightness detector 9 through the data transmission connector 13. After the detection is completed, the hydraulic cylinder 25 is controlled to retract to separate the upper mold 8 and the lower mold 7. Similarly, the pick-and-place mechanism 6 close to the side of the conveyor belt 24 is used to take out the gearbox in the lower mold 7 and place it on the conveyor belt 24. According to the detection structure, the conveying direction of the conveyor belt 24 can be selected. The above is the use process of the entire gearbox air tightness detection equipment.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A gearbox air tightness testing device, comprising a workbench (1) and a protective cover (2), wherein the protective cover (2) is fixed to the upper end of the workbench (1), and is characterized in that: A guide rod (3) is provided between the workbench (1) and the protective cover (2), a lifting plate (4) is slidably connected to the guide rod (3), an air pressure detection mechanism (5) is provided on the protective cover (2) and the lifting plate (4), a pick-up and placement mechanism (6) is provided on the workbench (1), and the pick-up and placement mechanism (6) is arranged on both sides below the lifting plate (4), hydraulic cylinders (25) are provided on both sides of the upper end of the protective cover (2), and the output end of the hydraulic cylinder (25) passes through the protective cover (2) and is connected to the lifting plate (4).

2. The gearbox air tightness detection device according to claim 1, characterized in that: The air pressure detection mechanism (5) comprises a lower mold (7), an upper mold (8), an air tightness detector (9) and an air pressure sensor (10); the lower mold (7) is fixedly connected to the workbench (1); the upper mold (8) is fixedly connected to the bottom of the lifting plate (4) and is arranged above the lower mold (7); the upper mold (8) and the lower mold (7) are plug-in connected and sealed; the air tightness detector (9) is arranged on the protective cover (2); and the air pressure sensor (10) is arranged on the inner wall of the upper mold (8).

3. A gearbox air tightness detection device according to claim 2, characterized in that: The lower end of the air tightness detector (9) is connected to an air supply pipe (11), and the lower end of the air supply pipe (11) is rotatably connected to a rotary joint (12). The rotary joint (12) penetrates the lifting plate (4) and is threadedly connected to the upper mold (8) and is in communication with the upper mold (8). A data transmission joint (13) is provided on the side wall of the upper mold (8), and the air pressure sensor (10) is connected to the air tightness detector (9) by wires via the data transmission joint (13).

4. The gearbox air tightness detection device according to claim 3, characterized in that: The pick-and-place mechanism (6) comprises a rotating shaft (14), an electric telescopic rod (15), a clamping cylinder (16) and a fixed plate (17); the rotating shaft (14) is rotatably connected to the workbench (1); the electric telescopic rod (15) is fixed to the workbench (1); the clamping cylinder (16) is arranged at the end of the electric telescopic rod (15); and the fixed plate (17) is rotatably connected to the output end of the clamping cylinder (16).

5. The gearbox air tightness detection device according to claim 4, characterized in that: A gear (18) is fixedly connected to the rotating shaft (14), a guide rail (19) is provided at the bottom of the workbench (1), a rack (20) is slidably connected to the guide rail (19), and the rack (20) is meshed with the gear (18).

6. The gearbox air tightness detection device according to claim 5, characterized in that: The two groups of racks (20) on the same side are connected by a connecting plate (21), and a driving cylinder (22) is provided at the bottom of the workbench (1), and the output end of the driving cylinder (22) is connected to the connecting plate (21).

7. The gearbox air tightness detection device according to claim 6, characterized in that: The workbench (1) is provided with a conveyor belt 1 (23) and a conveyor belt 2 (24), which are arranged on both sides respectively, and the conveyor belt 1 (23) and the conveyor belt 2 (24) are perpendicular to each other.

8. The gearbox air tightness detection device according to claim 7, characterized in that: The driving cylinder (22) and the connecting plate (21) are arranged vertically, the rack (20) and the driving cylinder (22) are arranged parallelly, the guide rod (3) and the lifting plate (4) are arranged vertically, and the lifting plate (4) and the workbench (1) are arranged parallelly.

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