Air tightness detection device and detection tool

Abstract

The utility model relates to the field of air tightness detection, in particular to an air tightness detection device, which comprises a mounting plate and an air cylinder fixed on the mounting plate, a first push block is fixed on a piston rod of the air cylinder, a connecting piece is fixed on the mounting plate, a second push block is fixed on one side, far away from the mounting plate, of the connecting piece, and the first push block corresponds to the second push block; during use, the air cylinder is started, the first push block is pushed out through the air cylinder, at the moment, the second push block fixed to the connecting piece provides support, the first push block and the second push block move oppositely, the two sealing tools are extruded, valves on the two sides of an engine cylinder head are closed, and then the air tightness is detected through an air tightness detection instrument. The first push block is pushed through the air cylinder, under the cooperation of the second push block, the air valves on the two sides of the engine are rapidly closed, the step of manual blocking is omitted, operation is easy and rapid, and efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection field, concretely relates to airtightness detection device and detection frock. BACKGROUND

[0002] Airtightness detection is an important step in the production of some fields, for example, in the engine field, some valves and cylinders need to be detected for airtightness during production; during detection, the parts need to be clamped first, and other openings of the parts need to be blocked, for example, after the engine shell is installed, the oil seal and paper pad airtightness need to be detected, the engine cylinder head on both sides of the valve, i.e. the exhaust and intake, needs to be blocked manually, and then the detection tube of the airtightness detection instrument is connected to the cylinder head cover for inflation detection, manual blocking is laborious, and the sealing performance after blocking is poor; in addition to the clamping steps, the whole detection process is complex and time-consuming; therefore, the traditional detection method is to use sampling detection, but nowadays product control is becoming more and more strict, and subtle defects can affect the reputation of the manufacturer, therefore, it is necessary to test the parts that need airtightness detection one by one during production; but the existing airtightness detection operation is relatively complex, and the detection efficiency is low. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide an airtightness detection device to solve the problem of complex airtightness detection operation and low detection efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an airtightness detection device, which comprises a mounting plate and a cylinder fixed on the mounting plate, a first push block is fixed on the piston rod of the cylinder, a connecting piece is fixed on the mounting plate, a second push block is fixed on the side of the connecting piece away from the mounting plate, and the first push block and the second push block correspond to each other.

[0005] The principle and beneficial effects of the technical scheme are as follows: the mounting plate is used for placing the air cylinder, the air cylinder is used for pushing out the first push block, the connecting piece is used for connecting the second push block, the first push block and the second push block correspond to each other, and the first push block and the second push block are used for extruding sealing tools; in use, two sealing tools are installed inside the first push block and the second push block, and then are placed on the valves on both sides of the engine cylinder head; the air cylinder is started, the first push block is pushed out through the air cylinder, the second push block fixed on the connecting piece provides support, the first push block and the second push block move towards each other, two sealing tools are extruded, and the valves on both sides of the engine cylinder head are closed; then, the test tube of the air tightness detection instrument is connected to the cylinder head cover, the inside is inflated to detect the air tightness; the utility model has the advantages of simple structure, the first push block is pushed by the air cylinder, and the valves on both sides of the engine are quickly closed under the cooperation of the second push block, the step of manual plugging is saved, the operation is simple and fast, and the efficiency is greatly improved.

[0006] As a preferred embodiment of the utility model, the air cylinder is communicated with a connecting pipe, the connecting pipe is provided with a pressing switch, the side surface of the pressing switch is rotationally provided with a pedal, a spring is arranged between the pressing switch and the pedal, and the other side of the pressing switch is communicated with an air inlet pipe.

[0007] Beneficial effects: the air inlet pipe is used for being connected with air compression equipment to provide compressed gas, the connecting pipe is used for being connected with the air cylinder to provide power for the air cylinder, the pressing switch is controlled by pressing, the air inlet pipe and the connecting pipe are communicated when the pressing switch is pressed to enable compressed gas to enter, the pedal is used for being stepped on to extrude the pressing switch, so that the tester can control by foot, both hands can be used to hold the air cylinder, and a single person can also complete the complete detection process; and the spring is used for popping out the pedal to reset the pedal.

[0008] As a preferred embodiment of the utility model, the connecting piece comprises a connecting barrel fixedly connected with the mounting plate, an extension rod is slidingly arranged in the connecting barrel, a plurality of through holes are arranged on the extension rod, and the connecting barrel is provided with a fixing hole.

[0009] Beneficial effects: the connecting barrel is used for placing the extension rod, the extension rod can slide along the connecting barrel, the distance between the first push block and the second push block is adjusted to adapt to engine shells of different sizes; when the distance is adjusted, the amount of the air cylinder extending out is reserved, the fixing hole of the connecting barrel is aligned with the through hole of the adjacent extension rod after the distance is adjusted, and then the fixing rod is inserted to fix the two.

[0010] As a preferred embodiment of the utility model, the first push block and the second push block adopt a semispherical structure and are internally provided with a magnet.

[0011] Beneficial effects: the first push block and the second push block adopt a hemispherical structure, which can be finely adjusted in angle when pushing the extrusion sealing tool, so as to facilitate the alignment of the opening of the engine shell; the magnet inside the first push block and the second push block can be used to attract the sealing tool, so that the sealing operation does not need to be held additionally, and the operation difficulty of the tester is reduced.

[0012] The second purpose of the utility model is to provide a gas tightness detection tool, which is installed through the gas tightness detection device, comprising two sealing tools, the sealing tool is arranged on the first push block and the second push block, and is used for closing the opening of the part; the sealing tool comprises a sealing plate, one side of the sealing plate is fixed with a connecting seat, the connecting seat can be connected with the first push block and the second push block; the side of the sealing plate away from the connecting seat is provided with a sealing piece.

[0013] Beneficial effects: the two sealing tools are used for plugging the valves on both sides of the engine cylinder head respectively, wherein the sealing plate is used for mounting the connecting seat and the sealing piece, the mounting seat is used for corresponding connection with the first push block and the second push block, so that when the cylinder is started, the first push block and the second push block can push the two sealing plates to move and plug the valves on both sides of the engine cylinder head; the sealing piece is used for sealing the gap between the sealing plate and the engine shell, and the sealing effect is improved.

[0014] As a preferred embodiment of the utility model, the sealing piece is a rubber block, and the rubber block is provided with a chamfer.

[0015] Beneficial effects: the rubber block is provided with a chamfer, which is convenient for being clamped into the opening of the engine, the rubber block adopts a rubber material and has a certain elastic deformation capacity, and can effectively plug the gap between the sealing plate and the engine shell. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below.

[0017] Figure 1 It is a structural schematic view of the gas tightness detection device embodiment of the utility model.

[0018] Figure 2 It is a side view of the gas tightness detection device embodiment of the utility model.

[0019] Figure 3 It is a sectional view of the gas tightness detection device embodiment of the utility model based on Figure 2 A-A.

[0020] Figure 4 For the air tightness detection device embodiment of the utility model implements based on Figure 2 The cross-sectional view of B-B.

[0021] Figure 5 The structure diagram of the air tightness detection tool embodiment of the utility model.

[0022] The reference signs in the drawings of the specification include: 1 mounting plate, 2 air cylinder, 3 first push block, 4 connecting piece, 41 connecting barrel, 42 extension rod, 43 through hole, 44 fixing hole, 45 fixing rod, 5 second push block, 6 connecting pipe, 7 press switch, 8 pedal, 9 spring, 10 air inlet pipe, 11 magnet, 12 sealing plate, 13 connecting seat, 14 sealing element, 141 rubber block, 142 chamfer. DETAILED DESCRIPTION

[0023] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as a limitation of the utility model.

[0024] In the description of the embodiments of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying 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 of the utility model.

[0025] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] Embodiment one

[0028] As shown in the accompanying Figure 1As shown, the utility model provides a kind of air tightness detection device: including mounting plate 1 and fixed on the mounting plate 1 air cylinder 2, the air cylinder 2 model is SDA32X5;The piston rod of the air cylinder 2 is fixed with first push block 3, the mounting plate 1 is fixed with connecting piece 4, the side of connecting piece 4 away from the mounting plate 1 is fixed with second push block 5, the first push block 3 and the second push block 5 correspond;When using, two sealing toolings are installed to the inboard of the first push block 3 and the second push block 5, then are placed to the valve on the two sides of engine cylinder head, start the air cylinder 2, push out the first push block 3 by the air cylinder 2, the second push block 5 on the connecting piece 4 is supported at this time fixed, let the first push block 3 and the second push block 5 move towards, extrude two sealing toolings, the valve on the two sides of engine cylinder head is closed, then the test tube of air tightness detection instrument is connected to cylinder head cover, and air tightness is detected by filling air in the interior;Air tightness detection instrument model is SALT-811.

[0029] As shown in the accompanying drawings Figure 1 In the embodiment, the connecting piece 4 includes the connecting barrel 41 fixedly connected with the mounting plate 1, the extension rod 42 is slidably arranged in the connecting barrel 41, a plurality of through holes 43 are arranged on the extension rod 42, and the fixing hole 44 is arranged on the connecting barrel 41.

[0030] As shown in the accompanying drawings Figure 1 、 Figure 2 and Figure 3 In the embodiment, the air cylinder 2 is connected with the connecting pipe 6, the connecting pipe 6 is two, one in and one out, for supplying air and exhausting air to the air cylinder 2; the pressing switch 7 is arranged on the connecting pipe 6, the pressing switch 7 is model MSV-86522-PLL; the pedal 8 is rotatably arranged on the side of the pressing switch 7, the spring 9 is arranged between the pressing switch 7 and the pedal 8, and the other side of the pressing switch 7 is connected with the air inlet pipe 10; the air inlet pipe 10 is used to be connected with the air compression equipment, to provide compressed gas, the pressing switch 7 is controlled by pressing, when being pressed, the air inlet pipe 10 is connected with the connecting pipe 6 for supplying air, so that the compressed gas enters, the pedal 8 is used to step and extrude the pressing switch 7, so that the tester can control by foot, and both hands can be used to hold the air cylinder 2, so that a single person can also complete the complete detection process; the spring 9 is used to pop out the pedal 8, to reset the pedal 8.

[0031] As attached Figure 4 As shown, in this embodiment, the first push block 3 and the second push block 5 adopt a hemispherical structure, and the sealing fixture adopts a corresponding structure. When pushing and squeezing the sealing fixture, the angle can be finely adjusted to align with the valves on both sides of the engine cylinder head. The magnet 11 inside the first push block 3 and the second push block 5 can be used to hold the sealing fixture, so that no additional holding is required when sealing, reducing the difficulty of operation for the inspector.

[0032] Example 2

[0033] As attached Figure 1 As shown: Based on the first embodiment, this utility model also provides an airtightness testing fixture, applied to the aforementioned airtightness testing device: It includes two sealing fixtures, each disposed on the first push block 3 and the second push block 5, for sealing the valves on both sides of the engine cylinder head; each sealing fixture includes a sealing plate 12, with a connecting seat 13 fixed to one side of the sealing plate 12. The connecting seat 13 can engage with the first push block 3 and the second push block 5. Specifically, the connecting seat 13 has a spherical groove for placing the first push block. 3 and the second push block 5, the connecting seat 13 is made of iron, which is easy to be attracted by the magnet 11; the sealing plate 12 is provided with a sealing element 14 on the side away from the connecting seat 13, the sealing element 14 is a rubber block 141, the rubber block 141 has a chamfer 142 to facilitate being inserted into the valves on both sides of the engine cylinder head, the rubber block 141 has a certain elastic deformation ability, which can effectively seal the gap between the sealing plate 12 and the engine housing; the sealing plate 12 and the rubber block 141 can be customized according to the valve structure on both sides of the engine cylinder head.

[0034] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solution of this utility model based on the inspiration given in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0035] The scope of protection claimed in this application shall be determined by the contents of its claims. The contents of the utility model description, specific embodiments, and drawings are used to interpret the claims.

[0036] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. An air tightness detection device, characterized by: The application relates to a piston-cylinder assembly, which comprises a mounting plate and a cylinder fixed on the mounting plate, a first push block is fixed on a piston rod of the cylinder, a connecting piece is fixed on the mounting plate, a second push block is fixed on a side of the connecting piece away from the mounting plate, and the first push block and the second push block correspond to each other.

2. The air tightness testing apparatus of claim 1, wherein: The cylinder is communicated with a connecting pipe, a press switch is arranged on the connecting pipe, a pedal is rotationally arranged on a side of the press switch, a spring is arranged between the press switch and the pedal, and an air inlet pipe is communicated with another side of the press switch.

3. The air tightness testing apparatus of claim 1, wherein: The connecting piece comprises a connecting cylinder fixedly connected with the mounting plate, an extension rod is slidably arranged in the connecting cylinder, a plurality of through holes are arranged on the extension rod, and the connecting cylinder is provided with a fixing hole.

4. The air tightness testing apparatus of claim 3, wherein: The first push block and the second push block adopt a hemispherical structure and are internally provided with magnets.

5. A gas tightness detection tool installed by the gas tightness detection device according to any one of claims 1 to 4, characterized by: The piston-cylinder assembly comprises two sealing tools arranged on the first push block and the second push block and used for sealing valves on both sides of a cylinder head of an engine, the sealing tool comprises a sealing plate, a connecting seat is fixed on one side of the sealing plate, the connecting seat can be clamped with the first push block and the second push block, and a sealing piece is arranged on a side of the sealing plate away from the connecting seat.

6. The air tightness detection tooling of claim 5, wherein: The sealing piece is a rubber block, and the rubber block is provided with a chamfer.

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