CN213393536U - Oil circuit hydraulic test blank hole sealing structure - Google Patents
Oil circuit hydraulic test blank hole sealing structure Download PDFInfo
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- CN213393536U CN213393536U CN202020713815.5U CN202020713815U CN213393536U CN 213393536 U CN213393536 U CN 213393536U CN 202020713815 U CN202020713815 U CN 202020713815U CN 213393536 U CN213393536 U CN 213393536U
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- sealing body
- elastic sealing
- hole
- compression bolt
- oil circuit
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Abstract
The utility model belongs to the field of machinery, a oil circuit hydraulic test blank hole seal structure is related to. The structure includes: the device comprises a compression bolt, an elastic sealing body and a compression piece; wherein, the rotary section of the elastic sealing body is a convex arc; a through hole is formed in the direction of the rotating shaft of the elastic sealing body, a screw rod of a compression bolt penetrates through the through hole, and the compression bolt tightly presses one end of the elastic sealing body; the pressing piece presses the other end of the elastic sealing body; the pressing piece gives the elastic sealing body a pressure, so that the length of the through hole is shortened, and the elastic sealing body expands in the radial direction. The utility model discloses reach and simulate out quick-witted casket oil circuit operating condition to whether there is the defect in detecting its manufacturing process.
Description
Technical Field
The utility model belongs to the field of machinery, a oil circuit hydraulic test blank hole seal structure is related to.
Background
The oil circuit hydraulic test is an important step for detecting the casing. In the test process, related oil way holes need to be sealed, and the oil pressure state of an oil way during work is simulated. When the blank hole sealing has axial sealing, the inner surface is rough and can not utilize national standard rubber rings; the end face sealing needs larger space to compress, and sometimes the inner space of the casing is limited and can not meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oil circuit hydraulic test blank hole seal structure to reach and simulate out quick-witted casket oil circuit operating condition, thereby detect whether there is the defect in its manufacturing process.
The utility model provides an oil circuit hydraulic test blank hole seal structure, include: the device comprises a compression bolt, an elastic sealing body and a compression piece;
wherein, the rotary section of the elastic sealing body is a convex arc; a through hole is formed in the direction of the rotating shaft of the elastic sealing body, a screw rod of a compression bolt penetrates through the through hole, and the compression bolt tightly presses one end of the elastic sealing body; the pressing piece presses the other end of the elastic sealing body; the pressing piece gives the elastic sealing body a pressure, so that the length of the through hole is shortened, and the elastic sealing body expands in the radial direction.
Furthermore, an annular groove is formed in the axial middle position of the side wall of the through hole.
Further, the pressing member includes: a washer and a nut;
be provided with the packing ring between nut and the elastic sealing body, have the internal thread in the nut, have the external screw thread on the screw rod, internal thread and external screw thread cooperation change the screw rod and are in the length in the through-hole, force the radial expansion of elastic sealing body.
Furthermore, the elastic sealing body is in small clearance fit with the blank hole wall of the related oil way hole in a free state.
Furthermore, the outer surface of the expanded elastic sealing body is completely attached to the hole wall of the blank and extruded mutually.
Furthermore, at least one pair of symmetrical clamping surfaces are cut on the side surface of the exposed end of the screw rod of the compression bolt.
Has the advantages that: the utility model relates to a device for plugging a casting blank hole in the hydraulic test process of an engine oil way, which can prevent test hydraulic oil from leaking from the oil way hole; and simulating the working state of an oil way when the engine case is in service. And detecting whether the engine oil way has leakage defect in the machining process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the end face of the new compression bolt.
Detailed Description
The seal structure includes: the sealing device comprises a compression bolt 1, an elastic sealing body 2, a gasket 3 and a nut 4. As shown in fig. 1-2, the sealing body 2 is in a clearance fit with the blank bore wall in the free state. The exposed end square head of the fixed compression bolt 1. The nut 4 is screwed down to compress the elastic sealing body 2, so that the elastic sealing body 2 is forced to expand in the radial direction to achieve the purpose of sealing the blank hole. The material of the piece 2 is selected from corresponding oil-resistant and high-temperature-resistant elastic materials according to the oil temperature and the oil pressure. The outer diameter of the elastic sealing body 2 adopts a convex arc shape, and the inner diameter is hollowed; the elastic sealing body 2 is beneficial to generating larger deformation of the outer diameter under smaller force so as to achieve the purpose of better fitting with the hole wall of a blank, the outer side of the compression bolt 1 is conveniently fixed by adopting a square design, and the surface AA is shown in figure 1.
The operation of the device will be described in detail with reference to fig. 1: in the free state, the piece 2 sealing body is in a close clearance fit with the bore wall, as shown in fig. 1. After the device is plugged into the hole, the pressing nut 4 is screwed up to compress the sealing body 2 by fixing the square outside of the pressing bolt 1, so that the sealing body is forced to deform outwards to achieve the purpose of sealing an oil way.
Claims (6)
1. The utility model provides an oil circuit hydraulic test blank hole seal structure which characterized in that includes: the device comprises a compression bolt, an elastic sealing body and a compression piece;
wherein, the rotary section of the elastic sealing body is a convex arc; a through hole is formed in the direction of the rotating shaft of the elastic sealing body, a screw rod of the compression bolt penetrates through the through hole, and the compression bolt tightly presses one end of the elastic sealing body; the pressing piece presses the other end of the elastic sealing body; the pressing piece gives the elastic sealing body a pressure, so that the length of the through hole is shortened, and the elastic sealing body expands in the radial direction.
2. The structure according to claim 1, wherein an annular groove is provided at an axially intermediate position of the through-hole side wall.
3. The structure of claim 1, wherein the compressing member comprises: a washer and a nut;
be provided with the packing ring between nut and the elastic sealing body, have the internal thread in the nut, have the external screw thread on the screw rod, internal thread and external screw thread cooperation change the screw rod and are in the length in the through-hole, force the radial expansion of elastic sealing body.
4. The structure of claim 1 wherein the elastomeric seal body is in a close clearance fit with the blank bore wall of the associated oil passage bore in a free state.
5. The structure of claim 4 wherein the outer surface of the expanded elastomeric seal body and the walls of the blank cell are in full abutment and are extruded with one another.
6. The structure of claim 1, wherein the exposed end of the shank of the hold-down bolt is flanked by at least one pair of symmetrical clamping surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020713815.5U CN213393536U (en) | 2020-04-30 | 2020-04-30 | Oil circuit hydraulic test blank hole sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020713815.5U CN213393536U (en) | 2020-04-30 | 2020-04-30 | Oil circuit hydraulic test blank hole sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393536U true CN213393536U (en) | 2021-06-08 |
Family
ID=76177342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020713815.5U Active CN213393536U (en) | 2020-04-30 | 2020-04-30 | Oil circuit hydraulic test blank hole sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393536U (en) |
-
2020
- 2020-04-30 CN CN202020713815.5U patent/CN213393536U/en active Active
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