Leakage test detection tool for sealing performance of motor casing

Abstract

The utility model, which belongs to the technical field of the motor casing detection tool, discloses a motor casing leakproofness leakage test detection tool comprising a frame, the frame is provided with a lifting frame, and the frame is fixedly connected with a water tank with a top opening. The leakage testing machine bottom plate is arranged at the lifting end of the lifting frame, the leakage testing machine bottom plate is used for placing a motor shell, a plugging assembly is arranged on the leakage testing machine bottom plate, the plugging assembly is used for plugging a plurality of openings in the outer side wall of the motor shell, and the lifting frame drives the motor shell on the leakage testing machine bottom plate to ascend and descend; the air bag assembly is arranged on the frame and communicated with a first hose, the end of the first hose is fixedly connected with a first sealing plug, the first sealing plug is used for being detachably connected with an opening in the end of the motor shell, the first sealing plug is hollow, and the air bag assembly inflates the interior of the motor shell through the first hose and a cavity in the first sealing plug. According to the utility model, the requirement of the leakage testing process in the production process of the motor casing can be met, and the leakage position of the motor casing can be effectively searched.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor shell detection frock technical field, especially a kind of motor shell leakproofness leak detection frock. BACKGROUND

[0002] The sealing requirement of motor shell in the motor equipped by new energy vehicle is particularly strict. The air leakage of motor shell can cause the internal pressure of motor to drop, affect the running performance of motor, and thus can cause the unstable operation of motor, and even cannot work normally.

[0003] The current motor shell sealing detection method is to fill air in the inside of motor shell, and detect the air leakage amount. Although this method can check whether motor shell leaks, it cannot quickly and effectively find the leakage point, so as to be inconvenient for quickly solving the leakage problem of motor shell.

[0004] Therefore, a kind of motor shell leakproofness leak detection frock is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of motor shell leakproofness leak detection frock, to solve or improve at least one of the above technical problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme: the utility model provides a kind of motor shell leakproofness leak detection frock, comprising:

[0007] frame, the frame is provided with lifting frame, the frame is fixedly connected with the water tank of top opening;

[0008] leak detection machine bottom plate, set in the lifting end of the lifting frame, the leak detection machine bottom plate is used to place motor shell, the leak detection machine bottom plate is provided with sealing assembly, the sealing assembly is used to seal the multiple openings on the outer lateral wall of motor shell, the lifting frame drives the motor shell on the leak detection machine bottom plate to lift, so that the motor shell is immersed in the water tank or leaves the water tank;

[0009] gas pocket assembly, set on the frame, the gas pocket assembly is communicated with first hose, the end of the first hose is fixedly connected with first plugging plug, the first plugging plug is used for detachably connected with the opening of motor shell end, the first plugging plug is hollow inside, the gas pocket assembly is filled with air in the inside of motor shell through the cavity in the first hose and the first plugging plug.

[0010] Preferably, the lifting frame includes a first lifting cylinder fixed to the frame, an output end of the first lifting cylinder is fixedly connected with a connecting frame, and the connecting frame is fixedly connected with the leak detection machine bottom plate.

[0011] Preferably, two linear guides are fixed on the frame, and a sliding block is slidably connected to the linear guides and fixed to the connecting frame.

[0012] Preferably, a plurality of openings are formed in the outer sidewall of the motor shell in a circumferential direction, the plugging assembly comprises a plurality of plugging cylinders fixed to the bottom plate of the leak testing machine, a second plugging plug is fixed to the piston rod of each plugging cylinder, and the second plugging plugs are arranged in one-to-one correspondence with the openings in the outer sidewall of the motor shell, and the plugging cylinders drive the second plugging plugs to plug into the openings in the sidewall of the motor shell.

[0013] Preferably, the air tank assembly comprises an air pump and an air storage tank fixed above the frame, the air outlet end of the air pump is fixedly connected to the air storage tank through a first connecting pipe, the air storage tank is fixedly connected to the first hose, and valves are fixed to the first connecting pipe and the first hose respectively.

[0014] Preferably, a second lifting cylinder is fixed to the connecting frame, a connecting plate is fixed to the piston rod of the second lifting cylinder, and the connecting plate is fixed to the first plugging plug.

[0015] Preferably, a pressure gauge is fixed to the air storage tank.

[0016] The utility model discloses the following technical effects: the motor shell is placed in the leak testing machine bottom plate, and the opening position of the motor shell sidewall is plugged through the plugging assembly, the first plugging plug is plugged into the opening in the end face of the motor shell after plugging, the motor shell is lowered and placed in the water tank by the air tank assembly and the lifting frame, the sealing property of the motor shell is detected, the leak point of the motor shell can be positioned quickly by observing the bubble position. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of this application are used to provide further understanding of the application, and the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitation on the application. In the drawings:

[0018] Figure 1 It is the structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural schematic diagram of the utility model that the motor shell is immersed in the water tank;

[0020] Figure 3 It is the structural schematic diagram of the lifting frame in the utility model;

[0021] Figure 4 It is the structure schematic view of the plugging assembly in the utility model;

[0022] Figure 5 It is the structure schematic view of the gas pocket assembly in the utility model.

[0023] In the figure: 1, frame; 2, water tank; 3, leak detection machine bottom plate; 4, motor shell; 5, first hose; 6, first plugging plug; 7, first lifting air cylinder; 8, connecting frame; 9, linear guide rail; 10, sliding block; 11, plugging air cylinder; 12, second plugging plug; 13, gas storage tank; 14, first connecting pipe; 15, second lifting air cylinder; 16, connecting plate; 17, pressure gauge. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Referring to Figures 1-5 The utility model provides a kind of motor shell leak detection tool for testing, comprising:

[0027] Frame 1 is provided with lifting frame on frame 1, and water tank 2 with top opening is fixedly connected on frame 1;

[0028] Leak detection machine bottom plate 3 is arranged at the lifting end of lifting frame, and leak detection machine bottom plate 3 is used to place motor shell 4;Leak detection machine bottom plate 3 is provided with plugging assembly, and plugging assembly is used to plug multiple openings on the outer wall of motor shell 4;Lifting frame drives motor shell 4 on leak detection machine bottom plate 3 to lift, so that motor shell 4 is immersed in water tank 2 or leaves water tank 2;

[0029] Gas pocket assembly is arranged on frame 1, and first hose 5 is communicated on gas pocket assembly;The end of first hose 5 is fixedly connected with first plugging plug 6;First plugging plug 6 is used for detachably connected with the opening of the end of motor shell 4;First plugging plug 6 is hollow inside;Gas pocket assembly fills air to the inside of motor shell 4 through the cavity in first hose 5 and first plugging plug 6.

[0030] In this embodiment, the motor shell 4 has end covers at both ends, a plurality of openings are formed on the outer side wall of the motor shell 4 in the circumferential direction, one end of the motor shell 4 has one opening, and the opening at the end is connected with the first sealing plug 6 for inflation and pressurization.

[0031] In this embodiment, the first sealing plug 6 is a polyurethane sealing plug, a sealing end head is fixedly connected to the end of the polyurethane sealing plug, a rubber sealing ring is fixedly sleeved on the outer side of the sealing end head, the inside of the polyurethane sealing plug and the sealing end head is hollow and communicates with the first hose 5, which facilitates the circulation of airflow, and the sealing end head and the rubber sealing ring are inserted into the opening at the end of the motor shell 4, and when inflated, the gas enters the motor shell 4 through the inside of the first hose 5 and the first sealing plug 6.

[0032] In some optional embodiments, the lifting frame includes a first lifting cylinder 7 fixedly connected to the frame 1, and the output end of the first lifting cylinder 7 is fixedly connected with a connecting frame 8, and the connecting frame 8 is fixedly connected with the leak testing machine bottom plate 3.

[0033] The first lifting cylinder 7 serves as a driving force to drive the leak testing machine bottom plate 3 to lift.

[0034] In some optional embodiments, two linear guides 9 are fixedly connected to the frame 1, a sliding block 10 is slidably connected to the linear guides 9, and the sliding block 10 is fixedly connected with the connecting frame 8.

[0035] The linear guides 9 and the sliding block 10 improve the stability of lifting.

[0036] In some optional embodiments, a plurality of openings are formed on the outer side wall of the motor shell 4 in the circumferential direction, the sealing assembly includes a plurality of sealing cylinders 11 fixedly connected to the leak testing machine bottom plate 3, a second sealing plug 12 is fixedly connected to the piston rod of the sealing cylinder 11, the plurality of second sealing plugs 12 are arranged one by one corresponding to the plurality of openings on the outer side wall of the motor shell 4, and the sealing cylinder 11 drives the second sealing plug 12 to be inserted into the opening in the side wall of the motor shell 4.

[0037] In this embodiment, the second sealing plug 12 includes a polyurethane sealing plug, a sealing end head is fixedly connected to the end of the polyurethane sealing plug, and a rubber sealing ring is fixedly sleeved on the outer side of the sealing end head. The sealing end head and the rubber sealing ring are inserted into the opening in the side wall of the motor shell 4 to achieve sealing.

[0038] In some optional embodiments, the gas tank assembly includes a gas pump (not shown in the figure) and a gas storage tank 13 fixedly connected above the frame 1, the gas outlet end of the gas pump is fixedly connected and communicated with the gas storage tank 13 through a first connecting pipe 14, the gas storage tank 13 is fixedly connected and communicated with the first hose 5, and valves are respectively fixedly connected on the first connecting pipe 14 and the first hose 5.

[0039] In some optional embodiments, a second lifting cylinder 15 is fixedly connected to the connecting frame 8, a connecting plate 16 is fixedly connected to the piston rod of the second lifting cylinder 15, and the connecting plate 16 is fixedly connected with the first sealing plug 6.

[0040] In some optional embodiments, the gas tank 13 is fixed with a pressure gauge 17. The pressure in the gas tank 13 is monitored through the pressure gauge 17, so as to control the air pressure in the motor shell 4. Meanwhile, the pressure gauge 17 can display the change of the air pressure in the motor shell 4.

[0041] In use, the motor shell 4 is placed on the bottom plate 3 of the leak detection machine. The motor shell 4 can be fixed on the bottom plate 3 of the leak detection machine through multiple bolts. The second plugging plug 12 is driven by the plugging cylinder 11 to plug the opening position of the side wall of the motor shell 4. After plugging, the first plugging plug 6 is plugged into the opening of the end surface of the motor shell 4 by the second lifting cylinder 15. The inside of the motor shell 4 is inflated and pressurized by the air pump. The inflation pressure is observed by the pressure gauge 17. After inflation, the motor shell 4 is lowered into the water tank 2 by the first lifting cylinder 7. Whether there is air leakage is observed by the pressure change of the pressure gauge 17. The air leakage position of the motor shell 4 is locked by the bubble position. Whether the motor shell leakage position has internal casting defects is checked. The casting process of the motor shell leakage position is adjusted. The motor shell leakage problem is solved. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. Therefore, it cannot be understood as a limitation on the utility model.

[0042] The above-described embodiments are only preferred modes of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements of the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope of the utility model.

Claims

1. A tooling for testing the sealing performance of an electric motor housing, characterized in that, The utility model relates to a kind of test leakage machine, including: Frame (1), lifting frame is provided on the frame (1), top opening water tank (2) is fixedly connected on the frame (1); Leakage tester bottom plate (3) is arranged in the lifting end of the lifting frame, the leakage tester bottom plate (3) is used to place motor shell (4), the leakage tester bottom plate (3) is provided with plugging assembly, the plugging assembly is used to block multiple openings on the outer side wall of motor shell (4), the lifting frame drives motor shell (4) on the leakage tester bottom plate (3) to lift, so that the motor shell (4) is immersed in the water tank (2) or leaves the water tank (2); Air pocket assembly is arranged on the frame (1), the air pocket assembly is communicated with first hose (5), the end of first hose (5) is fixedly connected with first blocking plug (6), the first blocking plug (6) is used for detachably connected with the opening of motor shell (4) end, the first blocking plug (6) is hollow inside, the air pocket assembly is inflated to the inside of motor shell (4) by the cavity in first hose (5) and first blocking plug (6).

2. The motor shell leak detection tooling of claim 1, wherein: The lifting frame includes first lifting cylinder (7) fixedly connected on the frame (1), the output end of first lifting cylinder (7) is fixedly connected with connecting frame (8), and the connecting frame (8) is fixedly connected with the leakage tester bottom plate (3).

3. The motor shell leak detection tooling of claim 2, wherein: Two linear guides (9) are fixedly connected on the frame (1), and the sliding block (10) is slidably connected on the linear guide (9).

4. The motor housing leak detection tooling of claim 1, wherein: Multiple openings are formed on the outer side wall of motor shell (4) circumferentially, the plugging assembly includes multiple plugging cylinders (11) fixedly connected on the leakage tester bottom plate (3), the piston rod of plugging cylinder (11) is fixedly connected with second blocking plug (12), multiple second blocking plugs (12) are arranged one by one with multiple openings on the outer side wall of motor shell (4), and the plugging cylinder (11) drives the second blocking plug (12) to be inserted into the opening of motor shell (4) side wall.

5. The motor housing leak detection tooling of claim 1, wherein: The air pocket assembly includes air pump and gas storage tank (13) fixedly connected above the frame (1), the air outlet end of air pump is fixedly connected and communicated with gas storage tank (13) by first connecting pipe (14), gas storage tank (13) is fixedly connected and communicated with first hose (5), and valve is respectively fixedly connected on first connecting pipe (14) and first hose (5).

6. The motor housing leak detection tooling of claim 2, wherein: Second lifting cylinder (15) is fixedly connected on the connecting frame (8), the piston rod of second lifting cylinder (15) is fixedly connected with connecting plate (16), and the connecting plate (16) is fixedly connected with the first blocking plug (6).

7. The motor housing leak detection tooling of claim 5, wherein: Pressure gauge (17) is fixedly connected on the gas storage tank (13).

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