A rear axle housing air tightness leak detection machine

Abstract

This utility model relates to the field of automotive parts testing technology, specifically to a rear axle housing airtightness testing machine, including a frame and a testing assembly. The testing assembly includes a lifting component, a water tank, a support frame, a clamping mechanism, a pushing component, a mounting base, an air injection head, a tightening component, a docking component, and an air injection port. When conducting an airtightness test on a car rear axle housing, the rear axle housing is placed on the clamping mechanism and then fixed by the clamping mechanism. Then, according to the corresponding car rear axle housing model, an air injection port of appropriate size is selected. The docking component is inserted into the tightening component, and then the tightening component is twisted to fix the docking component, completing the assembly of the air injection port and the air injection head. This solves the problem that existing rear axle housing airtightness testing machines have a fixed air injection port size, making it impossible to adjust for different rear axle housings, resulting in poor versatility.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts testing technology, and in particular to a rear axle housing airtightness leak tester. Background Technology

[0002] The rear axle assembly is an important component of the chassis module and has very high airtightness requirements. Therefore, it is necessary to conduct airtightness testing on the assembly. This requires the use of an airtightness leak tester to detect whether there are any air leaks in the rear axle housing.

[0003] The prior art (CN221173760U) discloses a rear axle housing airtightness tester, including a support plate, a pair of first sliding grooves, each connected to a positive and negative threaded screw via bearings, a driven bevel gear mounted on the positive and negative threaded screw, a pair of first sliders threaded to both ends of the positive and negative threaded screws, a clamping block mounted on the upper end face of each pair of first sliders, a cylinder mounted at the middle position of the bottom end face of the mounting plate, and a mounting block mounted on the output end of the cylinder. Then, by using an air injection head, the position of the rear axle housing can be prevented from shifting during the airtightness test.

[0004] However, with the above method, since the size of the air injection port of the air injection head is fixed, it cannot be adjusted according to different rear axle housings, resulting in poor versatility. Utility Model Content

[0005] The purpose of this utility model is to provide a rear axle housing airtightness tester, which aims to solve the problem that existing rear axle housing airtightness testers have poor versatility because the air injection port size of the air injection head is fixed and cannot be adjusted according to different rear axle housings.

[0006] To achieve the above objectives, this utility model provides a rear axle housing airtightness testing machine, including a frame and a leak testing assembly. The leak testing assembly includes a lifting component, a water tank, a support frame, a clamping mechanism, a pushing component, a mounting base, an air injection head, a tightening component, a docking component, and an air injection port; The lifting component is disposed on one side of the frame; the water storage tank is fixedly connected to the lifting component and located on one side of the lifting component; the support frame is fixedly connected to the frame and located on one side of the frame; the clamping mechanism is disposed on one side of the support frame; the pushing component is disposed on one side of the frame; the mounting base is fixedly connected to the pushing component and located on one side of the pushing component; the air injection head is fixedly connected to the mounting base and located on one side of the mounting base; the tightening component is disposed on one side of the air injection head; the docking component is located on one side of the tightening component; the air injection port is fixedly connected to the docking component and located on one side of the docking component.

[0007] The lifting component includes a lifting cylinder and a lifting block. The lifting cylinder is fixedly connected to the frame and located on one side of the frame. The lifting block is fixedly connected to the output end of the lifting cylinder and to the water tank, and is located on one side of the lifting cylinder.

[0008] The propulsion component includes an assembly frame, an electric telescopic cylinder, and a propulsion block. The assembly frame is fixedly connected to the frame and located on one side of the frame. The electric telescopic cylinder is fixedly connected to the assembly frame and located on one side of the assembly frame. The propulsion block is fixedly connected to the output end of the electric telescopic cylinder and to the mounting base, and located on one side of the electric telescopic cylinder.

[0009] The tightening component includes a connector and a tightening bolt. The connector is connected to the air injection head and is located on one side of the air injection head. The tightening bolt is rotatably connected to the connector and is located on one side of the connector.

[0010] The mating part includes a connector and an external thread. The connector communicates with the air injection port and is located on one side of the air injection port. The external thread is fixedly connected to the connector and is located on one side of the connector.

[0011] This utility model discloses a rear axle housing airtightness testing machine. When testing the airtightness of a car rear axle housing, the rear axle housing is placed on a clamping mechanism and fixed in place. Then, based on the corresponding rear axle housing model, a suitable air injection port is selected. The port is inserted into a tightening member via a connecting piece, and the tightening member is then twisted to secure the connecting piece, completing the assembly of the air injection port and the air injection head. Subsequently, the pushing member is controlled to drive the air injection head to insert the air injection port into the air inlet of the rear axle housing. The air injection head is connected to an air supply device, and a water tank is filled with water. The lifting member is controlled to bring the water tank close to the rear axle housing until it is submerged. The air supply device is then activated to observe whether air bubbles appear in the water, thus completing the airtightness test. This solves the problem of existing rear axle housing airtightness testing machines having a fixed air injection port size, making it impossible to adjust for different rear axle housings and resulting in poor versatility. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2This is a structural schematic diagram of the entire utility model from another angle.

[0015] Figure 3 This is a front view of the entire utility model.

[0016] Figure 4 This is a cross-sectional view of the propulsion component, mounting base, air injection head, tightening component, docking component, and air injection port of this utility model.

[0017] 101-Frame, 102-Lifting component, 103-Water tank, 104-Support frame, 105-Clamping mechanism, 106-Propeller component, 107-Mounting base, 108-Injection head, 109-Tightening component, 110-Connecting component, 111-Injection port, 112-Lifting cylinder, 113-Lifting block, 114-Assembly frame, 115-Electric telescopic cylinder, 116-Propeller block, 117-Connector, 118-Tightening bolt, 119-Matching joint, 120-External thread. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a structural schematic diagram of the entire utility model from another angle. Figure 3 This is a front view of the entire utility model. Figure 4 This is a cross-sectional view of the propulsion component, mounting base, air injection head, tightening component, docking component, and air injection port of this utility model.

[0020] This utility model discloses a rear axle housing airtightness leak tester, comprising a frame 101 and a leak test assembly. The leak test assembly includes a lifting component 102, a water tank 103, a support frame 104, a clamping mechanism 105, a pushing component 106, a mounting base 107, an air injection head 108, a tightening component 109, a docking component 110, and an air injection port 111. The lifting component 102 includes a lifting cylinder 112 and a lifting block 113. The pushing component 106 includes an assembly frame 114, an electric telescopic cylinder 115, and a pushing block 116. The tightening component 109 includes a connector 117 and a tightening bolt 118. The docking component 110 includes a butt joint 119 and an external thread 120. The aforementioned solution solves the problem that existing rear axle housing airtightness leak testers have poor versatility because the air injection port size of the air injection head is fixed and cannot be adjusted for different rear axle housings.

[0021] In this specific embodiment, the frame 101 is used to support the assembly of the leak testing component.

[0022] The lifting component 102 is disposed on one side of the frame 101; the water storage tank 103 is fixedly connected to the lifting component 102 and located on one side of the lifting component 102; the support frame 104 is fixedly connected to the frame 101 and located on one side of the frame 101; the clamping mechanism 105 is disposed on one side of the support frame 104; the pushing component 106 is disposed on one side of the frame 101; the mounting base 107 is fixedly connected to the pushing component 106 and located on one side of the pushing component 106; the air injection head 10... 8 is fixedly connected to the mounting base 107 and located on one side of the mounting base 107; the tightening member 109 is disposed on one side of the air injection head 108; the docking member 110 is located on one side of the tightening member 109; the air injection port 111 is fixedly connected to the docking member 110 and located on one side of the docking member 110. The rear axle housing of the vehicle is placed on the clamping mechanism 105, and then the rear axle housing of the vehicle is fixed by the clamping mechanism 105. The clamping mechanism 105 is prior art and can be used in accordance with publication number CN221173. The 760U patent document describes a mounting plate, groove, rotating rod, driving bevel gear, motor housing, motor, first slide groove, positive and negative threaded screw, driven bevel gear, first slider, and clamping block. Then, based on the corresponding automotive rear axle housing model, a suitable size air inlet 111 is selected. The mating part 110 is inserted into the tightening part 109, and the tightening part 109 is then twisted to fix the mating part 110, completing the assembly of the air inlet 111 and the air inlet head 108. Subsequently, the pushing part 106 is controlled to drive the air inlet head 108. 8. Insert the air inlet 111 into the air inlet of the rear axle housing of the vehicle. Connect the air inlet head 108 to the air supply equipment, fill the water tank 103 with water, and control the lifting component 102 to bring the water tank 103 close to the rear axle housing of the vehicle so that it is submerged. Then start the air supply equipment to observe whether air bubbles appear in the water to complete the airtightness test of the rear axle housing. This solves the problem that the existing rear axle housing airtightness test machine has a fixed air inlet size, so it cannot be adjusted according to different rear axle housings, resulting in poor versatility.

[0023] Secondly, the lifting cylinder 112 is fixedly connected to the frame 101 and located on one side of the frame 101; the lifting block 113 is fixedly connected to the output end of the lifting cylinder 112 and to the water tank 103, and located on one side of the lifting cylinder 112, controlling the lifting cylinder 112 to drive the lifting block 113 to move the water tank 103 up and down, so as to immerse the rear axle housing of the car during the airtightness test.

[0024] Furthermore, the assembly frame 114 is fixedly connected to the frame 101 and located on one side of the frame 101; the electric telescopic cylinder 115 is fixedly connected to the assembly frame 114 and located on one side of the assembly frame 114; the push block 116 is fixedly connected to the output end of the electric telescopic cylinder 115 and fixedly connected to the mounting base 107 and located on one side of the electric telescopic cylinder 115. The assembly frame 114 is used to assemble the electric telescopic cylinder 115 and control the electric telescopic cylinder 115 to drive the push block 116 to move the mounting base 107 horizontally, so that the air injection port 111 on the air injection head 108 is connected to the air inlet of the rear axle housing of the vehicle.

[0025] In addition, the connector 117 is connected to the gas injection head 108 and is located on one side of the gas injection head 108; the tightening bolt 118 is rotatably connected to the connector 117 and is located on one side of the connector 117. The connector 117 is used to insert into the docking part 110. Then, by twisting the tightening bolt 118 to connect with the docking part 110, the gas injection port 111 can be assembled.

[0026] Furthermore, the connector 119 is connected to the air inlet 111 and is located on one side of the air inlet 111; the external thread 120 is fixedly connected to the connector 119 and is located on one side of the connector 119; the inner ring of the connector 119 has a sealing ring for insertion with the connector 117; then, by turning the tightening bolt 118 to thread it into the external thread 120, the assembly of the air inlet 111 can be completed.

[0027] When using this utility model, the rear axle housing of the automobile is placed on the clamping mechanism 105, and then the rear axle housing of the automobile is fixed by the clamping mechanism 105. Then, according to the corresponding automobile rear axle housing model, the air inlet 111 of appropriate size is selected, and the connector 119 is inserted into the connector 117. Then, the tightening bolt 118 is turned to connect with the external thread 120, completing the assembly of the air inlet 111 and the air inlet head 108. Subsequently, the electric telescopic cylinder 115 is controlled to drive the push block 116 to move the air inlet head 108 to open the air inlet. 111 is inserted into the air inlet of the rear axle housing of the car. The air injection head 108 is connected to the air supply equipment to fill the water tank 103 with water. The lifting cylinder 112 is controlled to drive the lifting block 113 to lift the water tank 103, bringing the water tank 103 close to the rear axle housing of the car so that it is submerged. Then the air supply equipment is started to observe whether air bubbles appear in the water to complete the airtightness test of the rear axle housing. This solves the problem that the existing rear axle housing airtightness test machine has a fixed air injection port size, which cannot be adjusted according to different rear axle housings, resulting in poor versatility.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A rear axle housing airtightness testing machine, comprising a frame, characterized in that, It also includes leak testing components. The leak testing assembly includes a lifting component, a water tank, a support frame, a clamping mechanism, a pushing component, a mounting base, an air injection head, a tightening component, a docking component, and an air injection port; The lifting component is disposed on one side of the frame; the water storage tank is fixedly connected to the lifting component and located on one side of the lifting component; the support frame is fixedly connected to the frame and located on one side of the frame; the clamping mechanism is disposed on one side of the support frame; the pushing component is disposed on one side of the frame; the mounting base is fixedly connected to the pushing component and located on one side of the pushing component; the air injection head is fixedly connected to the mounting base and located on one side of the mounting base; the tightening component is disposed on one side of the air injection head; the docking component is located on one side of the tightening component; the air injection port is fixedly connected to the docking component and located on one side of the docking component.

2. The rear axle housing airtightness testing machine as described in claim 1, characterized in that, The lifting component includes a lifting cylinder and a lifting block. The lifting cylinder is fixedly connected to the frame and located on one side of the frame. The lifting block is fixedly connected to the output end of the lifting cylinder and to the water tank, and is located on one side of the lifting cylinder.

3. The rear axle housing airtightness testing machine as described in claim 2, characterized in that, The propulsion component includes an assembly frame, an electric telescopic cylinder, and a propulsion block. The assembly frame is fixedly connected to the frame and located on one side of the frame. The electric telescopic cylinder is fixedly connected to the assembly frame and located on one side of the assembly frame. The propulsion block is fixedly connected to the output end of the electric telescopic cylinder and to the mounting base, and located on one side of the electric telescopic cylinder.

4. The rear axle housing airtightness testing machine as described in claim 3, characterized in that, The tightening component includes a connector and a tightening bolt. The connector is connected to the air injection head and is located on one side of the air injection head. The tightening bolt is rotatably connected to the connector and is located on one side of the connector.

5. A rear axle housing airtightness testing machine as described in claim 4, characterized in that, The mating part includes a connector and an external thread. The connector communicates with the air injection port and is located on one side of the air injection port. The external thread is fixedly connected to the connector and is located on one side of the connector.

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