Automobile engine cylinder cover airtightness detection device

Abstract

The utility model relates to the technical field of air tightness detection, and discloses an air tightness detection device for an automobile engine cylinder cover, which comprises a detection box, supporting cylinders are fixed at four corners of the outer wall of the detection box, a top cover is arranged on the top surface of the detection box, and the detection box and the top cover are made of sound insulation plates. And detection assemblies are arranged in the detection box and on the top surface of the top cover, and each detection assembly comprises a placement frame fixed on the bottom surface of the top cover. According to the utility model, a cooling system filled with an engine cylinder cover is filled with gas through the air pump, then the hydraulic cylinder is started to drive the placement rack to move into the detection box, and the detection box and the top cover are made of sound insulation plates, so that the interior of the detection box is kept in a quiet and relatively closed environment; at the moment, the engine cylinder cover is detected in four directions through the four ultrasonic receivers, and when leaked gas passes through a leakage hole, ultrasonic waves are generated and detected, so that airtightness detection of the engine cylinder cover is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtight detection technical field especially relates to a kind of automobile engine cylinder cover airtight detection device. BACKGROUND

[0002] Cylinder cover is an important part on engine, which is provided with intake passage, exhaust passage, circulating water cooling system, oil supply system, etc. The sealing property of the circulating water cooling system of the cylinder cover is an important performance index of the cylinder cover.

[0003] The existing automobile engine cylinder cover airtight detection device (announcement number: CN220982581U) at least has the following disadvantages: the device fills gas into the cooling system of engine cylinder cover and then places in the basket, then places the basket in water, detects the airtightness of engine cylinder cover by whether bubble appears, but this detection method needs the eyes of staff to observe the generation of bubble, if bubble is too small to be ignored by staff, affects detection precision, and after detection, the wet engine cylinder cover needs to be dried, which increases the subsequent production process, therefore the utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides an automobile engine cylinder cover airtight detection device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An automobile engine cylinder cover airtight detection device, comprising a detection box, four corners of the outer wall of the detection box are fixed with support cylinders, the top surface of the detection box is provided with a top cover, the detection box and the top cover are made of soundproof boards, the inside of the detection box and the top surface of the top cover are provided with detection assemblies, the detection assembly comprises a placing rack fixed on the bottom surface of the top cover, and the inner walls of the detection box are fixed with ultrasonic receivers on four sides.

[0007] As a further scheme of the utility model, the top surface of the top cover is fixed with a gas pump and a multi-way valve group, one end of the gas inlet pipe of the gas pump is connected with the inlet end of the multi-way valve group, the outlet ends of the multi-way valve group are fixed with connecting gas pipes, one end of the connecting gas pipe penetrates through the top surface of the top cover and extends into the inside of the detection box, the front and back sides of the detection box are fixed with hydraulic cylinders, and one end of the telescopic rod of the hydraulic cylinder is fixed with the bottom surface of the top cover.

[0008] As a further scheme of the utility model, the inside of the support cylinder is slidably provided with a limiting rod, and the top end of the limiting rod is fixed with the bottom surface of the top cover.

[0009] As a further scheme of the utility model, the top surface of the placing rack is fixed with two connecting holes, and the connecting holes are rotatably connected with a plurality of rotating rollers.

[0010] As a further scheme of the utility model, two sliding holes are arranged on the top surface of the placing rack between the two connecting holes, a sliding rod is fixed in the sliding hole, a spring is movably arranged on the outer wall of the sliding rod, and the two ends of the spring are fixed to the two sides of the sliding hole and the clamping plate respectively.

[0011] As a further scheme of the utility model, the bottom end of the supporting cylinder is fixed with a shock-absorbing rubber pad.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The engine cylinder cover is placed on the placing rack, then the air pump is used to fill the gas into the cooling system of the engine cylinder cover, then the top cover is covered on the detection box, at this time, the engine cylinder cover is located in the inside of the detection box, at this time, the detection box and the top cover are made of soundproof boards, so that the inside of the detection box is kept in a quiet and relatively closed environment, at this time, the four ultrasonic receivers are used to detect the engine cylinder cover from four directions, when the leakage gas passes through the leakage aperture, the ultrasonic wave is generated and detected, so that the air tightness detection of the engine cylinder cover is realized, the detection structure does not need manual discrimination, the precision is relatively high, the engine cylinder cover does not need to be immersed in water, and subsequent drying is not needed, so that the subsequent production process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A three-dimensional structure schematic view of the air tightness detection device for the engine cylinder cover of the automobile is provided in the utility model;

[0015] Figure 2 A three-dimensional split structure schematic view of the air tightness detection device for the engine cylinder cover of the automobile is provided in the utility model;

[0016] Figure 3 A three-dimensional split structure schematic view of the air tightness detection device for the engine cylinder cover of the automobile is provided in the utility model;

[0017] Figure 4 A three-dimensional structure schematic view of the air tightness detection device for the engine cylinder cover of the automobile is provided in the utility model.

[0018] In the drawing: 1, detection box; 101, supporting cylinder; 102, top cover; 2, placing rack; 201, ultrasonic receiver; 202, air pump; 203, multi-way valve group; 204, connecting air pipe; 205, hydraulic cylinder; 3, limiting rod; 4, connecting hole; 401, rotating roller; 5, sliding hole; 501, sliding rod; 502, spring; 503, clamping plate; 6, shock-absorbing rubber pad. DETAILED DESCRIPTION

[0019] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] As shown in Figures 1-4 An automobile engine cylinder cover air tightness detection device, including detection box 1, the outer wall four corners of detection box 1 are all fixed with support cylinder 101, the top surface of detection box 1 is provided with top cover 102, detection box 1 and top cover 102 are all made of soundproof board, the inside of detection box 1 and the top surface of top cover 102 are all provided with detection assembly, detection assembly includes placing rack 2 fixed on the bottom surface of top cover 102, the inner wall four sides of detection box 1 are all fixed with ultrasonic receiver 201.

[0023] As shown in Figures 2-4As shown in the drawings, in this embodiment, the top surface of the top cover 102 is fixed with an air pump 202 and a multi-way valve group 203, one end of the air pump 202 is connected with the inlet end of the multi-way valve group 203, and the outlet end of the multi-way valve group 203 is fixed with a connecting air pipe 204, one end of the connecting air pipe 204 penetrates through the top surface of the top cover 102 and extends to the inside of the detection box 1, the front and rear sides of the detection box 1 are fixed with hydraulic cylinders 205, one end of the hydraulic cylinders 205 is fixed with the bottom surface of the top cover 102, the engine cylinder cover is placed on the placing rack 2, then the connecting air pipes 204 are connected with the cooling access holes of the engine cylinder cover, the air pump 202 is started to fill the gas into the cooling system of the engine cylinder cover, and the hydraulic cylinders 205 are started to drive the placing rack 2 to move to the inside of the detection box 1, the detection box 1 and the top cover 102 are made of soundproof boards, so that the inside of the detection box 1 is kept in a quiet and relatively closed environment, at this time, the engine cylinder cover is detected from four directions by four ultrasonic receivers 201, when the leaked gas passes through the leakage gap, the ultrasonic wave is generated and detected, so that the air tightness detection of the engine cylinder cover is realized.

[0024] As shown in the drawings, Figures 2-4 In this embodiment, the inside of the supporting barrel 101 is slidably provided with a limiting rod 3, the top end of the limiting rod 3 is fixed with the bottom surface of the top cover 102, the limiting rod 3 and the inside of the supporting barrel 101 are slidably inserted, so as to support and limit the top cover 102, so that the top cover 102 is more stable during movement.

[0025] As shown in the drawings, Figures 2-4 In this embodiment, the top surface of the placing rack 2 is fixed with two connecting holes 4, a plurality of rotating rollers 401 are rotatably connected in the inside of the connecting holes 4, by arranging the rotating rollers 401, the engine cylinder cover can be slidably moved on the rotating rollers 401 during the process of placing the engine cylinder cover into the placing rack 2, so that the engine cylinder cover is more conveniently placed.

[0026] As shown in the drawings, Figures 2-4 In this embodiment, the top surface of the placing rack 2 and between the two connecting holes 4 are provided with two sliding holes 5, a sliding rod 501 is fixed in the inside of the sliding hole 5, a spring 502 is movably sleeved on the outer wall of the sliding rod 501, the top surface of the placing rack 2 is provided with two clamping plates 503, the clamping plates 503 are slidably arranged on the outer wall of the sliding rod 501, and the two ends of the spring 502 are fixed with the two sides of the clamping plates 503 and the sliding hole 5, respectively, by arranging the clamping plates 503 and the elastic force of the spring 502, the engine cylinder cover can be clamped and fixed, so that the engine cylinder cover is kept stable during the air tightness detection, and the detection accuracy is increased.

[0027] As shown in the drawings, Figures 2-4As shown, in the embodiment, the bottom end of the support cylinder 101 is fixed with a shock-absorbing rubber pad 6, and the shock-absorbing rubber pad 6 can reduce the abnormal sound of the detection box 1 caused by the vibration of the external environment, thereby affecting the detection accuracy of the ultrasonic receiver 201.

[0028] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: in use, by placing the engine cylinder cover on the placing rack 2 and the rotating roller 401, at this time, the two clamping plates 503 are pulled away from each other, at this time, the clamping plate 503 slides on the outer wall of the sliding rod 501 and compresses the spring 502, then the engine cylinder cover is pushed, at this time, the engine cylinder cover rolls on the rotating roller 401 and moves to the middle position of the placing rack 2, at this time, the clamping plate 503 is loosened, the spring 502 quickly rebounds and pushes the clamping plate 503 to reset to clamp and fix the engine cylinder cover, then the several connecting air pipes 204 are connected with the cooling access holes of the engine cylinder cover, the gas pump 202 is started again to fill gas into the cooling system of the engine cylinder cover, and the hydraulic cylinder 205 is started again to drive the placing rack 2 to move to the inside of the detection box 1, at this time, the detection box 1 and the top cover 102 are both made of soundproof boards, which ensures that the inside of the detection box 1 remains in a quiet and relatively closed environment, at this time, the engine cylinder cover is detected from four directions by the four ultrasonic receivers 201, when there is a leakage gas passing through the leakage aperture, an ultrasonic wave is generated and detected, thereby realizing the air tightness detection of the engine cylinder cover, the limiting rod 3 is slidably inserted into the inside of the support cylinder 101, thereby supporting and limiting the top cover 102, thereby making the top cover 102 more stable during movement, and the shock-absorbing rubber pad 6 can reduce the abnormal sound of the detection box 1 caused by the vibration of the external environment, thereby affecting the detection accuracy of the ultrasonic receiver 201.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A device for detecting the air tightness of a cylinder head of an automobile engine, comprising a detection box (1), characterized in that, The outer wall of the detection box (1) is fixed with a support cylinder (101) at four corners, the top surface of the detection box (1) is provided with a top cover (102), the detection box (1) and the top cover (102) are made of sound insulation board, the inside of the detection box (1) and the top surface of the top cover (102) are provided with detection assemblies, the detection assembly comprises a placing rack (2) fixed to the bottom surface of the top cover (102), and the inner walls of the detection box (1) are fixed with ultrasonic receivers (201) on four sides.

2. The apparatus according to claim 1, wherein The top surface of the top cover (102) is fixed with an air pump (202) and a multi-way valve group (203), one end of the air pump (202) is connected with the inlet end of the multi-way valve group (203), a plurality of outlet ends of the multi-way valve group (203) are fixed with connecting air pipes (204), one end of the connecting air pipe (204) penetrates through the top surface of the top cover (102) and extends into the inside of the detection box (1), and the front and rear sides of the detection box (1) are fixed with hydraulic cylinders (205), one end of the hydraulic cylinder (205) is fixed with the bottom surface of the top cover (102).

3. The apparatus according to claim 2, wherein The inside of the support cylinder (101) is slidably provided with a limiting rod (3), and the top end of the limiting rod (3) is fixed with the bottom surface of the top cover (102).

4. The apparatus according to claim 3, wherein The top surface of the placing rack (2) is fixed with two connecting holes (4), and the inside of the connecting hole (4) is rotatably connected with a plurality of rotating rollers (401).

5. The apparatus according to claim 4, wherein The top surface of the placing rack (2) is provided with two sliding holes (5) between the two connecting holes (4), the inside of the sliding hole (5) is fixed with a sliding rod (501), the outer wall of the sliding rod (501) is movably sleeved with a spring (502), the top surface of the placing rack (2) is provided with two clamping plates (503), the clamping plate (503) and the outer wall of the sliding rod (501) are slidably arranged, and the two ends of the spring (502) are fixed with the two sides close to the clamping plate (503) and the sliding hole (5).

6. The apparatus according to claim 5, wherein The bottom end of the support cylinder (101) is fixed with a shock-absorbing rubber pad (6).

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