A bearing cap air tightness detection device

Abstract

The utility model discloses a bearing cap airtightness detection equipment relates to bearing cap detection technical field, including base, positioning bottom plate and side plate, the top of base is installed with positioning bottom plate, and the top of positioning bottom plate is provided with bearing cap inner sealing washer and positioning pin, the both sides of base top are installed with side plate, and the top of side plate is installed with top plate, the top of top plate is provided with cylinder body, and cylinder body output end is installed with the gland plate of the penetration top plate, the front end of gland plate is provided with the air inlet hole of outside air pump connection, the bottom of gland plate is installed with upper sealing washer, this device has the protruding bearing cap and is placed with the positioning bottom plate top positioning pin and bearing cap inner sealing washer place sticking position, and the sealing effect is improved, and the cylinder body is started and pushes the gland plate place and protruding bearing cap seal sticking, because bearing cap inner sealing washer and upper sealing washer place have made with the elastoplasticity sealing cream, and the plasticity and extensibility are improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing cover testing technology, specifically a bearing cover airtightness testing device. Background Technology

[0002] The core function of automotive camshaft bearing caps is to fix, seal, and position the bearings, ensuring their stable operation under high load and high speed conditions, thereby guaranteeing the normal operation of the vehicle's transmission or operating system. Airtightness testing of camshaft bearing caps is crucial to ensuring their sealing performance meets standards. Bearing operation relies on lubricating grease to reduce wear; airtightness testing can detect even the smallest gaps in the bearing cap, preventing grease leakage and lubrication failure. If a bearing cap malfunctions due to poor sealing, it can lead to mechanical transmission system jamming, abnormal noises, or even shutdown, and in severe cases, safety accidents. Airtightness testing can proactively mitigate these risks, thus requiring a bearing cap airtightness testing device.

[0003] However, existing bearing cover airtightness testing equipment has the following problems during use: traditional airtightness testing has insufficient sealing performance, the airtightness testing steps are numerous, and the testing efficiency is low. Utility Model Content

[0004] The purpose of this invention is to provide a bearing cover airtightness testing device to solve the related problems mentioned in the background art.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a bearing cover airtightness testing device, including a base, a positioning base plate and side plates. The positioning base plate is installed at the top of the base, and a bearing cover inner sealing gasket and a positioning pin are provided above the positioning base plate. Side plates are installed on both sides of the top of the base, and a top plate is installed at the top of the side plates. A cylinder body is provided at the top of the top plate, and a pressure plate penetrating the top plate is installed at the output end of the cylinder body. An air inlet is opened at the front end of the pressure plate to connect with an external air pump. An upper sealing gasket is installed at the bottom end of the pressure plate, and an air outlet is opened at the top inside the pressure plate to penetrate the upper sealing gasket. The air outlet is connected to the air inlet.

[0006] As a preferred embodiment of the bearing cover airtightness testing device of this utility model, lifting rings are provided at the four corners of the top of the base.

[0007] As a preferred embodiment of the bearing cover airtightness testing device of this utility model, the top plate is provided with multiple bearing sleeves.

[0008] As a preferred embodiment of the bearing cover airtightness testing device of this utility model, a limiting rod penetrating the bearing sleeve is installed at the top of the cover plate.

[0009] As a preferred embodiment of the bearing cover airtightness testing device of this utility model, the top of the pressure plate is equipped with a cylinder connection hook that is fixed to the output end of the cylinder body. As a preferred embodiment of the bearing cover airtightness testing device of this utility model, the inner sealing gasket and the upper sealing gasket of the bearing cover are made of elastic plastic sealant.

[0010] The beneficial effects of the bearing cover airtightness testing device of this utility model are as follows: 1. This utility model improves the sealing effect by placing the convex bearing cover on the positioning base plate above the positioning pin and the inner sealing gasket of the bearing cover. When the cylinder body is activated, the pressure plate is pushed to seal against the convex bearing cover. Since the inner sealing gasket and the upper sealing gasket of the bearing cover are made of elastic plastic sealant, the plasticity and elongation are improved.

[0011] 2. This utility model involves lowering the equipment and the product together into a water tank, connecting the air pump pipe to the air inlet, and inputting a stable air pressure into the test product for at least 30 seconds. The test air pressure must be 0.4 MPa. During this pressure stabilization period, if air bubbles are observed overflowing from the product surface or between the product and the positioning base plate and the pressure cover plate, it indicates that the product's air tightness test is unqualified. Conversely, if no air bubbles are observed, the bearing cover's air tightness test is qualified. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the front sectional view of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a top sectional view of the sleeve structure of this utility model; Figure 4 For the present utility model Figure 1 A magnified structural diagram at point A.

[0013] In the diagram: 1. Base; 101. Lifting ring; 2. Positioning base plate; 201. Inner sealing gasket of bearing cover; 202. Positioning pin; 3. Side plate; 4. Pressure plate; 401. Cylinder connecting hook; 402. Limiting rod; 403. Upper sealing gasket; 404. Air inlet; 405. Air outlet; 5. Top plate; 501. Bearing sleeve; 6. Cylinder body. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1, such as Figure 1-2 As shown, this utility model provides a technical solution: a bearing cover airtightness testing device, including a base 1, a positioning base plate 2, and side plates 3. The positioning base plate 2 is installed on the top of the base 1, and a bearing cover inner sealing gasket 201 and a positioning pin 202 are provided above the positioning base plate 2. Side plates 3 are installed on both sides of the top of the base 1, and a top plate 5 is installed on the top of the side plates 3. A cylinder body 6 is provided on the top of the top plate 5, and a pressure plate 4 penetrating the top plate 5 is installed at the output end of the cylinder body 6. An air inlet 404 connected to an external air pump is opened at the front end of the pressure plate 4, and an upper sealing gasket 403 is installed at the bottom end of the pressure plate 4. A penetrating upper sealing gasket 403 is opened at the top of the inside of the pressure plate 4. The vent 405 of the gasket 403 is connected to the inlet 404. The four corners of the top of the base 1 are provided with lifting rings 101. The top plate 5 is provided with multiple bearing sleeves 501. The top of the cover plate 4 is provided with a limiting rod 402 that passes through the bearing sleeve 501. The top of the cover plate 4 is provided with a cylinder connection hook 401 that is fixed to the output end of the cylinder body 6. By placing the convex bearing cover at the position where the positioning pin 202 on the positioning base plate 2 fits against the inner sealing gasket 201 of the bearing cover, the sealing effect is improved. The inner sealing gasket 201 and the upper sealing gasket 403 of the bearing cover are made of elastic plastic sealant to improve plasticity and extensibility.

[0016] Working principle: After connecting to an external power source, first use an air gun to clean the water stains or dust particles from the upper surface of the positioning base plate 2 and the bottom surface of the pressure plate 4, ensuring that no external factors will affect the airtightness test of the product during the inspection process. Then, align the two positioning holes of the convex bearing cover with the positioning pins 202 at their respective positions for positioning. Next, open the cylinder body 6. The telescopic rod of the cylinder body 6 will drive the pressure plate 4 to descend until it presses against the top of the bearing cover. Since sealing components are fixed on both the positioning base plate 2 and the pressure plate 4, the bearing cover is sealed internally. Gasket 201 and upper sealing gasket 403 are used to maintain the sealing effect of the bearing cover during compression. Then, the equipment and the product are lowered into the water tank. The air pump pipe is connected to the air inlet 404, and a stable air pressure is supplied to the test product for at least 30 seconds. The test air pressure must be 0.4 MPa. During this pressure stabilization period, if air bubbles are observed overflowing from the product surface or between the product and the positioning base plate 2 and the pressure plate 4, it indicates that the product air tightness test is unqualified. Otherwise, the bearing cover air tightness test is qualified.

[0017] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A bearing cover airtightness testing device, comprising a base (1), a positioning base plate (2), and a side plate (3), characterized in that: The top of the base (1) is equipped with a positioning base plate (2), and a bearing cover inner sealing gasket (201) and a positioning pin (202) are provided above the positioning base plate (2). Side plates (3) are installed on both sides of the top of the base (1), and a top plate (5) is installed on the top of the side plates (3). A cylinder body (6) is provided on the top of the top plate (5), and a pressure plate (4) penetrating the top plate (5) is installed at the output end of the cylinder body (6). An air inlet (404) connected to an external air pump is opened at the front end of the pressure plate (4). An upper sealing gasket (403) is installed at the bottom end of the pressure plate (4), and an air outlet (405) penetrating the upper sealing gasket (403) is opened at the top inside the pressure plate (4). The air outlet (405) is connected to the air inlet (404).

2. The bearing cover airtightness testing device according to claim 1, characterized in that: Hanging rings (101) are provided at the four corners of the top of the base (1).

3. The bearing cover airtightness testing device according to claim 1, characterized in that: The top plate (5) is provided with multiple bearing sleeves (501).

4. The bearing cover airtightness testing device according to claim 3, characterized in that: The top of the cover plate (4) is equipped with a limiting rod (402) that penetrates the bearing sleeve (501).

5. The bearing cover airtightness testing device according to claim 1, characterized in that: The top of the cover plate (4) is fitted with a cylinder connection hook (401) that is fixed to the output end of the cylinder body (6).

6. The bearing cover airtightness testing device according to claim 1, characterized in that: The upper sealing gasket (403) and the inner sealing gasket (201) of the bearing cover are made of elastomeric sealant.

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