CN215217983U - Plugging structure suitable for air tightness detection of thin-wall part or large-opening structure part - Google Patents
Plugging structure suitable for air tightness detection of thin-wall part or large-opening structure part Download PDFInfo
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- CN215217983U CN215217983U CN202121547241.XU CN202121547241U CN215217983U CN 215217983 U CN215217983 U CN 215217983U CN 202121547241 U CN202121547241 U CN 202121547241U CN 215217983 U CN215217983 U CN 215217983U
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Abstract
The utility model discloses a block structure suitable for thin wall spare or big opening structure part gas tightness detects, its characterized in that: including sealed cylinder, support cylinder installing support, wherein sealed cylinder includes cylinder piston and cylinder body, the cylinder piston has the center shaft hole that link up and is used for the intercommunication the inner chamber of cylinder body, the front end terminal surface of cylinder piston is provided with first sealing washer, be provided with the elastic component between the interior bottom surface of the rear end of cylinder piston and cylinder body, the outer periphery of cylinder piston with the inner wall of cylinder body is sealed through the second sealing washer, the piston rod of support cylinder is connected cylinder body, the support cylinder passes through the support cylinder installing support is relatively treated sealed work piece predetermined distance and is fixed. The utility model has the advantages that: the pressure of the supporting cylinder is prevented from directly acting on the thin-wall part to be sealed, further, the deformation of the workpiece caused by the sealing pressure is avoided, the sealing effect is good, and the structure is simple.
Description
Technical Field
The utility model relates to an air tightness detection device field concretely relates to block structure suitable for thin wall spare or big opening structure part gas tightness detects.
Background
The air tightness of parts in automobiles, especially for parts requiring oil or water passing, is extremely high. Therefore, after the parts are machined and manufactured, the air tightness of the parts is often required to be detected so as to evaluate the sealing performance of the parts.
At present, a method for detecting the air tightness of a part is generally an inflation pressure measurement method, namely, after dry compressed air with a certain pressure value is filled into an internal cavity of the part, the inflation is stopped, a sensor correspondingly installed is used for detecting the pressure, after the pressure is maintained for a certain time, if the pressure value in a sealed container is not changed, the air tightness of the part is judged to be qualified, otherwise, the part is judged to be unqualified in air tightness, and the part is an unqualified product and needs to be scrapped or repaired.
Before inflation, the opening on the part needs to be sealed and plugged, conventionally, a plug is directly plugged at the position of the opening through a hydraulic cylinder, and in order to meet the sealing requirement, the plugging force applied to a closed container by the hydraulic cylinder is 2-3 times of the pressure of the air pressure in the container acting on the wall of the container. However, when the air tightness of some thin-wall parts is detected, the parts cannot bear the plugging force and the plugging part is deformed, so that the air tightness detection by sealing and plugging cannot be realized. In addition, some large-opening parts need a plugging plate with a size corresponding to the large-opening parts to realize sealing when the large-opening parts are sealed, but the pressure of the inflation air pressure acting on the plugging plate is increased along with the increase of the area, so that the requirement on the plugging force is higher, and the common hydraulic cylinder is difficult to meet the requirement, so that the plugging cost is increased.
Disclosure of Invention
To the weak point among the above-mentioned prior art, the utility model provides a plugging structure suitable for thin wall spare or big opening structure part gas tightness detects, its effort that is used in treating on the sealing member is little, and is sealed effectual.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a plugging structure suitable for thin wall spare or big opening structure part gas tightness detects which characterized in that: including sealed cylinder, support cylinder installing support, wherein sealed cylinder includes cylinder piston and cylinder body, the cylinder piston has the center shaft hole that link up and is used for the intercommunication the inner chamber of cylinder body, the front end terminal surface of cylinder piston is provided with first sealing washer, be provided with the elastic component between the interior bottom surface of the rear end of cylinder piston and cylinder body, the outer periphery of cylinder piston with the inner wall of cylinder body is sealed through the second sealing washer, the piston rod of support cylinder is connected the outside bottom of cylinder body, the support cylinder passes through the support cylinder installing support is treated sealed thin wall spare predetermined distance relatively and is fixed the setting.
Further, the elastic member is a compression spring.
Furthermore, the front end of a cylinder rod of the supporting cylinder is hinged with the cylinder body of the air cylinder, and the cylinder body of the air cylinder is provided with a plurality of guide rods which are in sliding fit with the mounting bracket of the supporting cylinder for guiding.
Further, the number of the second sealing rings is one or more than one in interval arrangement.
Further, the supporting cylinder is an oil cylinder or an air cylinder.
The utility model has the advantages that: the pressure of the supporting cylinder is prevented from directly acting on the thin-wall part to be sealed, further, the deformation of the workpiece caused by the sealing pressure is avoided, the sealing effect is good, and the structure is simple.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
The plugging structure suitable for detecting the air tightness of the thin-walled part or the large-opening part as shown in figure 1 comprises a sealing air cylinder, a supporting cylinder 9 and a supporting cylinder mounting bracket 6, wherein the sealing air cylinder comprises an air cylinder piston 3 and an air cylinder body 4. In the embodiment shown in fig. 1, the cylinder piston 3 has a through central shaft hole for communicating the inner cavity of the cylinder body 4 with the opening of the thin-walled workpiece 1 to be detected, so that the pressure gas can enter the cylinder body 4 when the thin-walled workpiece 1 is subjected to inflation detection, and further the pressures at the front end and the rear end of the cylinder piston 3 are balanced. And the contact surface of the front end surface of the cylinder piston 3 and the thin-wall workpiece 1 is provided with a first sealing ring 2 for realizing sealing. And an elastic member 7 is provided between the rear end of the cylinder piston 3 and the inner bottom surface of the cylinder block 4, and the elastic member 7 is preferably a compression spring. And during sealing, the compression spring tightly pushes the cylinder piston 3 against the thin-wall workpiece 1 by means of elastic force. The outer circumferential surface of the cylinder piston 3 and the inner wall of the cylinder body 4 are sealed through second sealing rings 8, the number of the second sealing rings 8 is two, and the second sealing rings are arranged at intervals, so that the air tightness in the cylinder body 4 is good. The piston rod of the supporting cylinder 9 is connected to the bottom of the outer side of the cylinder body 4, the cylinder body 4 is supported through hydraulic pressure of the supporting cylinder 9, and the supporting cylinder 9 is fixedly arranged at a preset distance relative to the thin-walled part to be sealed through the supporting cylinder mounting bracket 6.
When the air tightness is detected, the supporting cylinder 9 can be selected as an oil cylinder or an air cylinder, the lever of the supporting cylinder 9 extends out to push the cylinder body 4 of the air cylinder to move forwards, the air cylinder piston 3 is pressed on the thin-wall workpiece 1 by the compression spring, and the thin-wall workpiece 1 is only under the action of the spring force at the moment, so that the deformation cannot be caused. When the thin-wall workpiece 1 is flushed with pressure gas, the pressure gas can enter the cylinder body 4, and at the moment, the pressure at the two ends of the cylinder piston 3 is balanced, so that the thin-wall workpiece 1 is not influenced by the action of the pressure or the acting force is small, and the large pressure cannot be applied to the thin-wall workpiece 1. The pressure of the inflation gas pressure acts mainly on the bottom of the cylinder block 4 to be transmitted to the support cylinder 9. The force of the air pressure is balanced by the hydraulic pressure of the support cylinder 9.
In order to make sealed effectual in the in-service use, cylinder piston 3 front end and work piece contact are good, and the jar rod front end and the cylinder body 4 hinged joint of support cylinder 9 in this embodiment, and be provided with a plurality of guide arms 5 and support cylinder installing support 6 sliding fit direction on the cylinder body 4.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (5)
1. The utility model provides a plugging structure suitable for thin wall spare or big opening structure part gas tightness detects which characterized in that: comprises a sealing cylinder, a supporting cylinder (9) and a supporting cylinder mounting bracket (6), wherein the sealing cylinder comprises a cylinder piston (3) and a cylinder body (4), the cylinder piston (3) is provided with a through central shaft hole for communicating the inner cavity of the cylinder body (4), a first sealing ring (2) is arranged on the end surface of the front end of the cylinder piston (3), an elastic part (7) is arranged between the rear end of the cylinder piston (3) and the inner bottom surface of the cylinder body (4), the outer circumferential surface of the cylinder piston (3) and the inner wall of the cylinder body (4) are sealed by a second sealing ring (8), a piston rod of the supporting cylinder (9) is connected with the bottom of the outer side of the cylinder body (4) of the air cylinder, the supporting cylinder (9) is fixedly arranged through the supporting cylinder mounting bracket (6), and the supporting cylinder (9) is arranged at a preset distance relative to the thin-wall part to be sealed.
2. The plugging structure suitable for detecting the air tightness of a thin-wall part or a large-opening structural part according to claim 1, wherein: the elastic piece (7) is a compression spring.
3. The plugging structure suitable for detecting the air tightness of a thin-wall part or a large-opening structural part according to claim 1, wherein: the front end of a cylinder rod of the supporting cylinder (9) is hinged with the cylinder body (4), and the cylinder body (4) is provided with a plurality of guide rods (5) which are in sliding fit with the supporting cylinder mounting bracket (6) for guiding.
4. The plugging structure suitable for detecting the air tightness of a thin-wall part or a large-opening structural part according to claim 1, wherein: the number of the second sealing rings (8) is one or more than one in interval arrangement.
5. The plugging structure suitable for detecting the air tightness of a thin-wall part or a large-opening structural part according to claim 1, wherein: the supporting cylinder (9) is an oil cylinder or an air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121547241.XU CN215217983U (en) | 2021-07-08 | 2021-07-08 | Plugging structure suitable for air tightness detection of thin-wall part or large-opening structure part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121547241.XU CN215217983U (en) | 2021-07-08 | 2021-07-08 | Plugging structure suitable for air tightness detection of thin-wall part or large-opening structure part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215217983U true CN215217983U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121547241.XU Active CN215217983U (en) | 2021-07-08 | 2021-07-08 | Plugging structure suitable for air tightness detection of thin-wall part or large-opening structure part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215217983U (en) |
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2021
- 2021-07-08 CN CN202121547241.XU patent/CN215217983U/en active Active
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