CN213455988U - Rotary valve air tightness detection device for automobile steering machine - Google Patents
Rotary valve air tightness detection device for automobile steering machine Download PDFInfo
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- CN213455988U CN213455988U CN202022575138.8U CN202022575138U CN213455988U CN 213455988 U CN213455988 U CN 213455988U CN 202022575138 U CN202022575138 U CN 202022575138U CN 213455988 U CN213455988 U CN 213455988U
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Abstract
The utility model discloses a rotary valve air tightness detection device for an automobile steering gear, which comprises a lifting driving piece, a support frame, a sealing sleeve body, a pressure head and a sealing ring, wherein the support frame is arranged on the lifting driving piece; the sealing sleeve body is positioned on the valve core of the rotary valve and comprises a fixed sleeve and a movable sleeve, the fixed sleeve is fixedly arranged at the bottom of the support frame, the upper end of the movable sleeve is movably arranged in the fixed sleeve, the lower end of the movable sleeve penetrates out of the fixed sleeve, and the bottom of the movable sleeve is provided with a first opening for the valve core to penetrate in; the pressure head is of a hollow structure, the upper end of the pressure head is connected with an air inlet pipe, the lower end of the pressure head sequentially penetrates through the support frame and the fixed sleeve to extend into the movable sleeve, and the bottom of the pressure head is provided with a second opening for the valve core to penetrate through; the sealing ring is arranged in the movable sleeve and is positioned below the lower end of the pressure head, and an inner hole of the sealing ring can deform under the pressure of the pressure head to form sealing with the penetrated valve core. The automatic sealing device is convenient for operators through quick automatic sealing, and simultaneously improves the production efficiency and the sealing reliability.
Description
Technical Field
The utility model relates to a motor steering machine especially relates to a motor steering machine is with changeing airtight detection device of valve.
Background
In the air tightness detection process of the rotary valve for the automobile steering machine, the valve core of the rotary valve needs to be sealed firstly, and then the tightness between the torsion bar and the valve core of the rotary valve, namely the tightness of the O-shaped ring of the rotary valve, needs to be detected. The existing valve core sealing mode usually adopts a manual operation mode to form a sealed chamber, but the mode has low sealing efficiency, large workload and poor reliability.
Therefore, how to improve the efficiency and reliability of the sealing as much as possible, improve the utilization rate of the equipment and reduce the workload of operators is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems in the prior art, the utility model provides an auto steering machine is with changeing airtight detection device of valve can effectively seal the change valve case fast.
The utility model discloses an auto steering machine is with changeing airtight detection device of valve, its concrete structure is as follows:
the lifting driving piece is arranged on the lifting driving piece; the sealing sleeve body is positioned on the valve core of the rotary valve and comprises a fixed sleeve and a movable sleeve, the fixed sleeve is fixedly arranged at the bottom of the support frame, the upper end of the movable sleeve is movably arranged in the fixed sleeve, the lower end of the movable sleeve penetrates out of the fixed sleeve, and the bottom of the movable sleeve is provided with a first opening for the valve core to penetrate in; the pressure head is of a hollow structure, the upper end of the pressure head is connected with an air inlet pipe, the lower end of the pressure head sequentially penetrates through the support frame and the fixed sleeve to extend into the movable sleeve, and the bottom of the pressure head is provided with a second opening for the valve core to penetrate through; the sealing ring is arranged in the movable sleeve and is positioned below the lower end of the pressure head, and an inner hole of the sealing ring can deform under the pressure of the pressure head to form sealing with the penetrated valve core.
The upper end of the fixed sleeve is fixed at the bottom of the support frame through a bolt, the lower end of the fixed sleeve is provided with a third opening with the diameter smaller than the inner diameter of the fixed sleeve, and the upper end of the movable sleeve is provided with a step which is arranged in the fixed sleeve and has the outer diameter larger than the diameter of the third opening.
The lifting driving part is a cylinder, and a cylinder piston rod is connected with the supporting frame.
Use the utility model discloses an auto steering machine has obtained following beneficial effect with changeing airtight detection device of valve:
the supporting frame, the sealing sleeve body, the pressure head and the like are driven by the air cylinder to move downwards integrally, so that the valve core and the torsion bar of the rotary valve penetrate into the pressure head through the movable sleeve and finally enter the sealing ring through the sealing ring, when the bottom of the movable sleeve is contacted with a dead baffle of the rotary valve, the movable sleeve stops moving downwards, other parts still move downwards, and when the lower end surface of the pressure head is pressed on the sealing ring by the pressure output by the air cylinder, the sealing ring deforms and seals each contact surface of the valve core to form a sealed chamber, thereby realizing quick and effective sealing before airtight detection; through hollow pressure head, can external intake pipe to the case of wearing into it in go on logical detection gas to detect the sealed effect of the O shape circle between case and the torsion bar. The automatic sealing device is convenient for operators through quick automatic sealing, and simultaneously improves the production efficiency and the sealing reliability.
Drawings
Fig. 1 is a cross-sectional view of the air tightness detecting device of the present invention (before detection);
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view (detection state) of the airtightness detection apparatus according to the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-2, the air tightness detecting device includes a lifting driving member, a supporting frame 1, a sealing sleeve, a pressure head 2 and a sealing ring 3, wherein the lifting driving member may be a cylinder 4, etc., the bottom of the cylinder 4 is fixedly disposed on a base 7 of a rotary valve 5, and a piston rod is upwardly connected to the supporting frame 1; the support frame 1 adopts a Z-shaped structure and is driven to lift by the air cylinder 4; the sealing sleeve body is positioned on the valve core 6 of the rotary valve 5 and comprises a fixed sleeve 8 and a movable sleeve 9, the upper end of the fixed sleeve 8 is fixed at the bottom of the support frame 1 through a bolt, the lower end of the fixed sleeve is provided with a third opening with the diameter smaller than the inner diameter of the fixed sleeve 8, the upper end of the movable sleeve 9 is movably arranged in the fixed sleeve 8, the specific structure can adopt that the upper end of the movable sleeve 9 is provided with a step which is arranged in the fixed sleeve 8 and has the outer diameter larger than the diameter of the third opening (not marked in the figure), so that the movable sleeve 8 can move up and down, the lower end of the movable sleeve 9 penetrates; the pressure head 2 is of a hollow structure, the upper end of the pressure head is provided with a joint which can be connected with an air inlet pipe 10, the lower end of the pressure head sequentially penetrates through the support frame 1 and the fixed sleeve 8 to extend into the movable sleeve 9, and the bottom of the pressure head is provided with a second opening 15 for the valve core 6 to penetrate; the sealing ring 3 is arranged in the movable sleeve 9 and is positioned below the lower end of the pressure head 2, and the inner hole of the sealing ring 3 can deform under the pressure of the pressure head 2 to form sealing with the penetrated valve core 6.
Before the air-tight detection device is used, the support frame 1 does not move downwards integrally, the seal sleeve body and the seal ring 3 are in free states, the seal ring 3 does not deform, please refer to fig. 3-4, after the air cylinder 4 is started, the air cylinder 4 drives the support frame 1 to move downwards integrally, when the lower end face of the movable sleeve 9 contacts the dead baffle 11 of the rotary valve 5, the movable sleeve 9 stops moving downwards, and other components still move downwards, so that when the lower end face of the pressure head 2 presses the seal ring 3 by the pressure output by the air cylinder 4, the seal ring 3 deforms to seal each contact face of the valve core 6 to form a closed chamber, and therefore quick and effective sealing before air-tight detection is realized. Then, the detection gas is filled into the ram 2 through the intake pipe 10 to detect the sealing performance between the torsion bar 12 of the rotary valve 5 and the valve element 6, that is, the O-ring 13 thereof.
However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.
Claims (3)
1. The utility model provides an auto steering machine is with changeing airtight detection device of valve which characterized in that: the lifting driving piece is arranged on the lifting driving piece; the sealing sleeve body is positioned on the valve core of the rotary valve and comprises a fixed sleeve and a movable sleeve, the fixed sleeve is fixedly arranged at the bottom of the support frame, the upper end of the movable sleeve is movably arranged in the fixed sleeve, the lower end of the movable sleeve penetrates out of the fixed sleeve, and the bottom of the movable sleeve is provided with a first opening for the valve core to penetrate in; the pressure head is of a hollow structure, the upper end of the pressure head is connected with an air inlet pipe, the lower end of the pressure head sequentially penetrates through the support frame and the fixed sleeve to extend into the movable sleeve, and the bottom of the pressure head is provided with a second opening for the valve core to penetrate through; the sealing ring is arranged in the movable sleeve and is positioned below the lower end of the pressure head, and an inner hole of the sealing ring can deform under the pressure of the pressure head to form sealing with the penetrated valve core.
2. The rotary valve airtightness detection apparatus for an automobile steering gear according to claim 1, wherein: the upper end of the fixed sleeve is fixed at the bottom of the support frame through a bolt, the lower end of the fixed sleeve is provided with a third opening with the diameter smaller than the inner diameter of the fixed sleeve, and the upper end of the movable sleeve is provided with a step which is arranged in the fixed sleeve and has the outer diameter larger than the diameter of the third opening.
3. The rotary valve airtightness detection apparatus for an automobile steering gear according to claim 1, wherein: the lifting driving part is a cylinder, and a cylinder piston rod is connected with the supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575138.8U CN213455988U (en) | 2020-11-09 | 2020-11-09 | Rotary valve air tightness detection device for automobile steering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575138.8U CN213455988U (en) | 2020-11-09 | 2020-11-09 | Rotary valve air tightness detection device for automobile steering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213455988U true CN213455988U (en) | 2021-06-15 |
Family
ID=76299535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022575138.8U Active CN213455988U (en) | 2020-11-09 | 2020-11-09 | Rotary valve air tightness detection device for automobile steering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213455988U (en) |
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2020
- 2020-11-09 CN CN202022575138.8U patent/CN213455988U/en active Active
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