Automobile cylinder cover air tightness detection tool

Abstract

The utility model discloses an air tightness detection tool for an automobile cylinder cover. The automobile cylinder cover airtightness detection tool comprises a lifting mechanism, the lifting mechanism is provided with a sliding block, the sliding block is provided with two sets of T-shaped sliding rails, the T-shaped sliding rails are in sliding connection with a connecting rod, the connecting rod is hinged to a movable plate, the movable plate is provided with a third rubber pad and a hose, one end of the hose is connected with a micro air pump, and the other end of the hose is connected with a second rubber pad. Four groups of air holes are formed in the corresponding positions of the movable plate and the third rubber pad, air pressure sensors are arranged near the air holes of the movable plate, and the micro air pump is fixedly connected with the connecting rod through a cross rod. According to the automobile cylinder cover air tightness detection tool provided by the utility model, data detected by the air pressure sensor are imaged through a pressure attenuation method, and whether the air tightness of the automobile cylinder cover is good or not is judged by observing the change speed of air pressure in the closed cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detection tool for an automobile cylinder head. Background Art

[0002] The automobile cylinder head is installed on the top of the engine block, sealing the cylinder from the top and forming a combustion chamber. It is often in contact with high-temperature and high-pressure combustion gas, and therefore bears a large thermal and mechanical load. The cylinder head is equipped with a seat ring, intake channel and exhaust channel.

[0003] Application No. CN202221418119.7 seals the air inlet through an air inlet sealing device; seals the exhaust port through an exhaust port sealing device; seals the seat ring through a seat ring sealing device; and then ventilates the first and second vent pipes and places them underwater to observe their bubbling points, thereby finding out the location of the defect and achieving the purpose of leakage defect analysis.

[0004] When this technical solution is actually used, the automobile cylinder head contains multiple cavities, and each cavity needs to be tested individually during testing. Therefore, the device needs to be frequently immersed in water and then taken out, and then disassembled and installed, which is inconvenient to operate. Therefore, it is necessary to provide an automobile cylinder head air tightness testing tool to solve the above technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an automobile cylinder head air tightness detection tool that can detect the air tightness of the automobile cylinder head more quickly and conveniently.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A tool for testing air tightness of automobile cylinder heads, comprising: A tool for testing air tightness of automobile cylinder heads, characterized in that it comprises: a lifting mechanism, the lifting mechanism is provided with a slider, the slider is provided with two sets of T-shaped slide rails, the T-shaped slide rails are slidably connected to a connecting rod, the connecting rod is hinged to a movable plate, a third rubber pad is installed on the movable plate, a hose is installed on the movable plate, a plurality of air holes are provided at corresponding positions of the movable plate and the third rubber pad, an air pressure sensor is provided near the air holes of the movable plate, the micro air pump is fixedly connected to the connecting rod through a cross bar, and one end of the hose is connected to the micro air pump.

[0008] Preferably, a fixing plate is fixedly mounted on the table body, a first rubber pad is mounted on one side of the fixing plate, a second rubber pad is mounted on the table body, and a plurality of groups of threaded holes are provided at corresponding positions of the second rubber pad and the table body.

[0009] Preferably, a control console is installed on the table body, and buttons and a display screen are provided on the control console.

[0010] Preferably, the first rubber pad is detachable and has various models.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) Compared with the water inspection method, the air pressure decay method adopted by the utility model is more convenient in use, and there is no need to immerse the automobile cylinder head and the device in water, which is easy to operate.

[0013] (2) The utility model can detect the air pressure inside the closed rear cavity through the air pressure sensor, and image it in the console, and judge whether the air tightness of the automobile cylinder head is good or not by the speed of air pressure decay. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the first-view structure of an automobile cylinder head air tightness detection tool provided by the utility model;

[0015] Figure 2 A schematic diagram of the lifting mechanism structure of a vehicle cylinder head air tightness detection tool provided by the utility model;

[0016] Figure 3 A schematic diagram of the structure of a second viewing angle of an automobile cylinder head air tightness detection tool provided by the utility model;

[0017] Among them, the names corresponding to the figure marks are: 100-table body, 102-control console, 103-first rubber pad, 104-threaded hole, 105-second rubber pad, 106-fixed rod, 107-baffle, 108-threaded rod, 109-fixed plate, 110-bearing, 111-motor, 200-lifting mechanism, 201-micro air pump, 202-T-type slide rail, 203-connecting rod, 204-third rubber pad, 205-slider, 206-movable plate, 207-hose, 208-cross bar. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0019] First embodiment:

[0020] like Figure 1-3As shown, an automobile cylinder head air tightness detection tool provided by the utility model includes: a lifting mechanism 200, the lifting mechanism 200 is provided with a slider 205, the slider 205 is provided with two groups of T-shaped slide rails 202, the T-shaped slide rails 202 are slidably connected with the connecting rod 203, the connecting rod 203 is hinged with the movable plate 206, the movable plate 206 is installed with a third rubber pad 204, a hose 207 is installed on the movable plate 206, one end of the hose 207 is connected to the micro air pump 201, the movable plate 206 and the third rubber pad 204 are provided with a plurality of air holes at corresponding positions, an air pressure sensor is provided near the air holes of the movable plate 206, the micro air pump 201 is fixedly connected with the connecting rod 203 through a cross bar 208, one end of the hose is connected to the micro air pump, the movable plate has an airway connecting the air holes, and the micro air pump can inject gas into the cavity through the hose and the air holes.

[0021] Through the hinged connection between the movable plate 206 and the connecting rod 203 and the T-shaped slide rail 202, the third rubber pad 204 can close the air inlets at different heights and different inclination angles. The air pressure sensor can monitor the air pressure changes in the closed cavity in real time, avoiding the operation of immersing the device in water in the water inspection method. At the same time, all cavities are closed at one time, avoiding repeated installation and disassembly.

[0022] Second embodiment:

[0023] like Figure 1 As shown, a fixing plate 109 is fixedly installed on the table body 100, a first rubber pad 103 is installed on one side of the fixing plate 109, a second rubber pad 105 is installed on the table body 100, and a plurality of groups of threaded holes 104 are provided at corresponding positions of the second rubber pad 105 and the table body 100.

[0024] The second rubber pad 105 and the plurality of threaded holes 104 can better fix and seal the seat ring openings of cylinder heads of automobiles of different models.

[0025] Third embodiment:

[0026] A control console 102 is installed on the table body 100 . The control console 102 is provided with buttons and a display screen. The buttons can control the working states of the motor 111 and the micro air pump 201 . The control console 102 is an assembly of an air pressure sensor.

[0027] By observing the real-time air pressure monitoring data, the changes in air pressure in the closed cavity can be seen very intuitively, thereby determining whether the air tightness of the automobile cylinder head is good.

[0028] Fourth embodiment:

[0029] The first rubber pad 103 is detachable and has various types.

[0030] Through the detachable first rubber pad 103 and various models, it is possible to seal exhaust ports of different shapes and positions.

[0031] When in use, observe the exhaust port of the automobile cylinder head, select a suitable first rubber pad 103, fix the first rubber pad 103 on the fixing plate 109, turn the seat ring of the automobile cylinder head downward, and fix it on the second rubber pad 105 through the threaded hole 104, start the motor 111 through the control console, and then start the lifting mechanism 200 to slowly descend. If the third rubber pad 204 fails to completely seal the air inlet port, the lifting mechanism 200 can be raised, and the position of the third rubber pad 204 can be adjusted through the T-shaped slide rail 202. After confirming that the air inlet port, the exhaust port and the seat ring port of the automobile cylinder head are sealed, start the micro air pump 201 through the control console 102, and the micro air pump 201 stops working after injecting a certain amount of gas into the closed cavity. The air pressure sensor on the movable plate 206 starts working, and the air pressure data in the closed cavity will be displayed on the display screen on the control console. By observing the speed of the air pressure decay in the closed cavity, it can be judged whether the automobile cylinder head has good air tightness.

[0032] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A vehicle cylinder head air tightness detection tool, characterized in that: include: A lifting mechanism (200) comprises a slider (205), the slider (205) being provided with two groups of T-shaped slide rails (202), the T-shaped slide rails (202) being slidably connected to a connecting rod (203), the connecting rod (203) being hinged to a movable plate (206), the movable plate (206) being provided with a third rubber pad (204), the movable plate (206) being provided with a hose (207), one end of the hose (207) being connected to a micro air pump (201), the movable plate (206) and the third rubber pad (204) being provided with a plurality of air holes at corresponding positions, an air pressure sensor being provided near the air holes of the movable plate (206), and the micro air pump (201) being fixedly connected to the connecting rod (203) via a cross bar (208).

2. The automobile cylinder head air tightness detection tool according to claim 1, characterized in that: A fixing plate (109) is fixedly mounted on the table body (100), a first rubber pad (103) is mounted on one side of the fixing plate (109), a second rubber pad (105) is mounted on the table body (100), and a plurality of groups of threaded holes (104) are arranged at corresponding positions of the second rubber pad (105) and the table body (100).

3. The automobile cylinder head air tightness detection tool according to claim 2, characterized in that: A control console (102) is installed on the table body (100), and buttons and a display screen are provided on the control console (102).

4. The automobile cylinder head air tightness detection tool according to claim 2, characterized in that: The first rubber pad (103) is detachable and has various models.

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