CN210978523U - Upright post sealing device - Google Patents
Upright post sealing device Download PDFInfo
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- CN210978523U CN210978523U CN201921850636.XU CN201921850636U CN210978523U CN 210978523 U CN210978523 U CN 210978523U CN 201921850636 U CN201921850636 U CN 201921850636U CN 210978523 U CN210978523 U CN 210978523U
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Abstract
The utility model discloses a stand sealing device. The upright post sealing device comprises a piston rod and an inner cylinder body, wherein the inner cylinder body comprises a first abutting end and a first guide sleeve, the first guide sleeve comprises a first abutting plate and a first embedding plate which are connected, the first abutting plate abuts against the end face of the first abutting end, and the first embedding plate extends from the first abutting end and is embedded between the inner cylinder body and the piston rod; the first sealing block comprises a first lug and a second lug which are oppositely arranged, and a first sealing groove is defined by the first lug and the second lug; the first embedding plate is provided with a second sealing groove, a groove wall of the second sealing groove and the surface of the first abutting plate, which is back to the inner cylinder body, limit a third convex block, the third convex block is hermetically filled in the first sealing groove, and the first convex block is hermetically filled in the second sealing groove. The utility model provides a stand sealing device has improved the leakproofness between cylinder body and the piston rod, avoids getting into sealed position such as water, dust, has prevented the pollution stand.
Description
Technical Field
The utility model relates to a hydraulic support technical field especially relates to a stand sealing device.
Background
With the development of high-efficiency automatic coal mining technology and mine production automation in recent years, the technology of the large-mining-height hydraulic support is continuously developed and updated, but the problem of sealing failure exists due to various adverse factors such as friction, abrasion and corrosion of the large-mining-height hydraulic support due to complex working conditions of a coal face.
In the prior art, the most typical and important seal on the support is an upright post seal, the upright post is connected with a hydraulic support and a top beam, and the seal reliability of the upright post seal is an important guarantee for the reliability of a fully mechanized mining face support system. The inventor finds in the process of realizing the invention, that the upright column generally comprises a piston rod and a cylinder body telescopically arranged outside the piston rod. The inventor discovers that most of piston rods and cylinder bodies are sealed by adopting a polyurethane Y-shaped sealing ring as a composite seal of a main sealing ring at present, along with the increase of the internal pressure of a system, the contact stress of the polyurethane Y-shaped sealing ring is continuously increased, so that the pressure gradient at a sealing interface is in a descending trend integrally, the sealing performance is gradually weakened, and after water, dust and the like enter a sealing part, the sealing surface is seriously corroded, the sealing is failed, and the upright post is polluted.
Therefore, it is necessary to solve the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a stand sealing device to solve the problem that exists among the prior art, improve the leakproofness between cylinder body and the piston rod, avoid water, dust etc. to get into sealed position, prevent to pollute the stand.
The utility model provides a stand sealing device, be in including piston rod, setting that can slide the interior cylinder body in the piston rod outside, interior cylinder body includes first butt end, still includes: the first guide sleeve comprises a first abutting plate and a first embedding plate which are connected, the first abutting plate abuts against the end face of the first abutting end, and the first embedding plate extends from the first abutting end and is embedded between the inner cylinder body and the piston rod; the sealing structure comprises a first sealing block and a second sealing block, wherein the first sealing block comprises a first lug and a second lug which are oppositely arranged, and the first lug and the second lug define a first sealing groove; the first embedded plate is provided with a second sealing groove on the surface facing the piston rod, a third convex block is limited on the groove wall of the second sealing groove and the surface of the first abutting plate, which faces away from the inner cylinder body, and is filled in the first sealing groove in a sealing manner, and the second sealing groove is filled in the first convex block in a sealing manner.
Optionally, the second sealing groove is an annular groove formed in a closed loop manner, the first sealing block is an annular sealing ring, the first protruding block extends around the circumferential direction of the annular sealing ring to form a closed-loop protruding block, and the annular protruding block is embedded into the annular groove.
Optionally, the first sealing block is made of polyurethane.
Optionally, the pillar sealing device further includes a second sealing block, and a first chamfer is disposed at a junction between an end surface of the first abutting end and an inner wall of the inner cylinder; the first embedding plate is provided with a third sealing groove, the first chamfer and the third sealing groove are buckled to form a sealing cavity, and the second sealing block is sealed and filled in the sealing cavity.
Optionally, the first abutment plate is fastened at the first abutment end by a screw.
Optionally, the pillar sealing device further includes an outer cylinder slidably disposed outside the inner cylinder, and a second guide sleeve sealingly embedded between the inner cylinder and the outer cylinder.
Optionally, the outer cylinder body includes the second butt end, the second uide bushing inlays including the second butt board and the second that are connected and establishes the board, the second butt board butt is in on the terminal surface of second butt end, the second inlays establishes the board and follows the second butt end extends to inlay establishes into the outer cylinder body with between the inner cylinder body.
Optionally, a fourth sealing groove is further formed in one side, facing the piston rod, of the first embedding plate, and an inner fourth sealing block is filled in the fourth sealing groove.
Optionally, the number of the fourth sealing grooves is multiple, and the multiple fourth sealing grooves are arranged along the length direction of the first embedded plate.
Optionally, a fifth sealing groove is formed in one side, facing the inner cylinder, of the first embedding plate, and a fifth sealing block is filled in the fifth sealing groove.
The utility model provides a stand sealing device, first butt board butt can form preliminary sealed effect between first uide bushing and interior cylinder body at first butt end, through the sealed packing of third lug at first seal groove, the sealed packing of first lug is at the second seal groove, makes to form the sealed effect of two sealed secondaries of side between first sealed piece and the first uide bushing, avoids getting into sealed position such as water, dust, can effectively prevent to pollute the stand.
Drawings
The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a pillar sealing device according to an alternative embodiment of the present invention.
Fig. 2 is a partially enlarged view of a in fig. 1.
Fig. 3 is a schematic structural view of a first guide sleeve according to an alternative embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a first sealing block according to an alternative embodiment of the present invention.
Detailed Description
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1 to 4, the utility model provides a column sealing device, including piston rod 1, can slide the setting and be in interior cylinder body 2, first uide bushing 3 and the first sealed piece 4 in the piston rod 1 outside.
Referring to fig. 1 to 4, the inner cylinder 2 includes a first abutting end 21, the first guide sleeve 3 includes a first abutting plate 31 and a first embedded plate 32 connected to each other, the first abutting plate 31 abuts against an end surface of the first abutting end 21, and the first embedded plate 32 extends from the first abutting end 21 and is embedded between the inner cylinder 2 and the piston rod 1; the first sealing block 4 comprises a first lug 41 and a second lug 42 which are oppositely arranged, and the first lug 41 and the second lug 42 define a first sealing groove 43; a second sealing groove 33 is formed in the surface of the first embedding plate 32 facing the piston rod 1, a third protruding block 34 is defined by the groove wall of the second sealing groove 33 and the surface of the first abutting plate 31 facing away from the inner cylinder 2, the third protruding block 34 is hermetically filled in the first sealing groove 43, and the first protruding block 41 is hermetically filled in the second sealing groove 33.
The utility model provides a stand sealing device, first butt board 31 butt can form preliminary sealed effect between first uide bushing 3 and inner cylinder body 2 at first butt end 21, through the sealed packing of third lug 34 at first seal groove 43, the sealed packing of first lug 41 is at second seal groove 33, makes to form the sealed secondary seal effect of two sides between first sealed piece 4 and the first uide bushing 3, avoids water, entering seal position such as dust, can prevent to pollute the stand.
Optionally, the second sealing groove 33 is an annular groove provided in a closed loop, the first sealing block 4 is an annular sealing ring, and the first protrusion 41 extends around the circumference of the annular sealing ring to form a closed-loop protrusion, and the closed-loop protrusion is filled in the annular groove. In this embodiment, the first seal block 4 is filled in the second seal groove 33 along the circumferential direction, and can effectively seal the piston rod 1 and the inner cylinder 2 in the circumferential direction.
Optionally, the first sealing block 4 is made of polyurethane. The first sealing block 4 made of polyurethane has the effects of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity, and can effectively increase the sealing effect between the inner cylinder body 2 and the piston rod 1.
Preferably, the pillar sealing device further comprises a second sealing block 5, and a first chamfer 22 is arranged at the junction between the end surface of the first abutting end 21 and the inner wall of the inner cylinder 2; the first embedded plate 32 is provided with a third sealing groove 36, the first chamfer 22 and the third sealing groove 36 are fastened to form a sealing cavity, and the second sealing block 5 is hermetically filled in the sealing cavity. The second sealing block 5 is filled inside the sealing cavity by adopting a special-shaped structure matched with the sealing cavity so as to realize effective sealing between the first guide sleeve 3 and the inner cylinder body 2.
As an alternative implementation, the first abutment plate 31 is fastened to the first abutment end 21 by means of screws 6. This embodiment can realize the effective connection between first uide bushing 3 and the internal cylinder body 2, increases the sealed effect between first uide bushing 3 and the internal cylinder body 2 simultaneously.
Optionally, the pillar sealing device further includes an outer cylinder 7 slidably disposed outside the inner cylinder 2, and a second guide sleeve 71, and the second guide sleeve 71 is sealingly embedded between the inner cylinder 2 and the outer cylinder 7. The second guide sleeve 71 in this embodiment can realize effective sealing between the inner cylinder body 2 and the outer cylinder body 7 in the double telescopic vertical column.
Preferably, the external cylinder 7 includes a second abutting end, the second guiding sleeve 71 includes a second abutting plate and a second embedding plate connected to each other, the second abutting plate abuts against an end surface of the second abutting end, and the second embedding plate extends from the second abutting end and is embedded between the external cylinder 7 and the internal cylinder 2. The second butt plate butt is at the second butt end, can form primary seal structure between second uide bushing 71 and second butt end, inlays through the second and establishes the board and extend into between outer cylinder body 7 and the inner cylinder body 2, can form secondary seal structure between second uide bushing 71 and outer cylinder body 7, has guaranteed sealed effect.
Optionally, a fourth seal groove 34 is further formed in one side of the first embedded plate 32 facing the piston rod 1, and an inner fourth seal block is filled in the fourth seal groove 34. The fourth sealing groove 34 in this embodiment is adapted to the fourth sealing block, so that the sealing effect between the first guide sleeve 3 and the piston rod 1 can be further improved.
Optionally, the number of the fourth seal grooves 34 is plural, and the plural fourth seal grooves 34 are arranged in a row along the length direction of the first insertion plate 32. The length direction of the first insertion plate 32 is the axial direction of the piston rod 1, and the plurality of fourth seal grooves 34 can further increase the sealing effect.
Similarly, a fifth sealing groove 35 is formed in one side of the first embedded plate 32, which faces the inner cylinder 2, and a fifth sealing block is filled in the fifth sealing groove 35. The fifth sealing groove 35 in this embodiment is adapted to the fifth sealing block, so that the effect of sealing the first guide sleeve 3 and the inner cylinder body 2 can be further improved.
The second seal block, the third seal block, the fourth seal block, and the fifth seal block may be polyurethane seal rings. The sealing rubber has the effects of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity, and can effectively increase the sealing effect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a stand sealing device, includes the piston rod, can slide the setting and be in the interior cylinder body in the piston rod outside, its characterized in that, interior cylinder body includes first butt end, still includes:
the first guide sleeve comprises a first abutting plate and a first embedding plate which are connected, the first abutting plate abuts against the end face of the first abutting end, and the first embedding plate extends from the first abutting end and is embedded between the inner cylinder body and the piston rod;
the sealing structure comprises a first sealing block and a second sealing block, wherein the first sealing block comprises a first lug and a second lug which are oppositely arranged, and the first lug and the second lug define a first sealing groove; the first embedded plate is provided with a second sealing groove on the surface facing the piston rod, a third convex block is limited on the groove wall of the second sealing groove and the surface of the first abutting plate, which faces away from the inner cylinder body, and is filled in the first sealing groove in a sealing manner, and the second sealing groove is filled in the first convex block in a sealing manner.
2. The pillar seal according to claim 1, wherein the second seal groove is an annular groove provided in a closed loop, the first seal block is an annular seal ring, and the first protrusion extends around a circumferential direction of the annular seal ring to form a closed loop protrusion, and the annular protrusion is fitted into the annular groove.
3. The pillar seal of claim 2, wherein said first seal block is made of polyurethane.
4. The pillar sealing device according to claim 3, further comprising a second sealing block, wherein a first chamfer is provided at a junction between an end surface of the first abutting end and an inner wall of the inner cylinder; the first embedding plate is provided with a third sealing groove, the first chamfer and the third sealing groove are buckled to form a sealing cavity, and the second sealing block is sealed and filled in the sealing cavity.
5. The pillar seal of claim 4, wherein said first abutment plate is fastened to said first abutment end by a screw.
6. The mast seal according to any one of claims 1 to 5, further comprising an outer cylinder slidably disposed outside the inner cylinder and a second guide sleeve sealingly embedded between the inner cylinder and the outer cylinder.
7. The pillar seal device according to claim 6, wherein the outer cylinder includes a second abutting end, and the second guide sleeve includes a second abutting plate and a second embedded plate connected to each other, the second abutting plate abutting on an end surface of the second abutting end, and the second embedded plate extending from the second abutting end and embedded between the outer cylinder and the inner cylinder.
8. The pillar sealing device according to claim 7, wherein a fourth sealing groove is further formed in one side of the first insertion plate facing the piston rod, and an inner fourth sealing block is filled in the fourth sealing groove.
9. The pillar seal device according to claim 8, wherein the number of the fourth seal grooves is plural, and the plural fourth seal grooves are arranged in a row along a length direction of the first installation plate.
10. The pillar seal device according to any one of claims 7 to 9, wherein a fifth seal groove is formed in one side of the first installation plate facing the inner cylinder, and a fifth seal block is filled in the fifth seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921850636.XU CN210978523U (en) | 2019-10-30 | 2019-10-30 | Upright post sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921850636.XU CN210978523U (en) | 2019-10-30 | 2019-10-30 | Upright post sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210978523U true CN210978523U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921850636.XU Active CN210978523U (en) | 2019-10-30 | 2019-10-30 | Upright post sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210978523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163145A (en) * | 2022-09-05 | 2022-10-11 | 河南省豫煤矿机有限公司 | Double-telescopic upright post for hydraulic support of high-speed coal mine |
-
2019
- 2019-10-30 CN CN201921850636.XU patent/CN210978523U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163145A (en) * | 2022-09-05 | 2022-10-11 | 河南省豫煤矿机有限公司 | Double-telescopic upright post for hydraulic support of high-speed coal mine |
| CN115163145B (en) * | 2022-09-05 | 2022-11-18 | 河南省豫煤矿机有限公司 | Double-telescopic upright post for hydraulic support of high-speed coal mine |
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