CN218207311U - Split type structure of hydraulic cylinder uide bushing - Google Patents
Split type structure of hydraulic cylinder uide bushing Download PDFInfo
- Publication number
- CN218207311U CN218207311U CN202222066757.3U CN202222066757U CN218207311U CN 218207311 U CN218207311 U CN 218207311U CN 202222066757 U CN202222066757 U CN 202222066757U CN 218207311 U CN218207311 U CN 218207311U
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- Prior art keywords
- guide sleeve
- gland
- cylinder
- sealing element
- split type
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- 238000007789 sealing Methods 0.000 claims abstract description 63
- 210000004907 gland Anatomy 0.000 claims abstract description 34
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000284 extract Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a split type structure of a hydraulic oil cylinder guide sleeve, which comprises a cylinder barrel and a guide sleeve; the top of the guide sleeve is provided with a guide part, and the middle part of the guide sleeve is provided with a limiting part; a gland is arranged between the guide sleeve and the cylinder barrel wall; the gland is in threaded connection with the outer cylinder wall of the cylinder barrel, and the sealing element on the gland is not in direct contact with the piston rod and the inner wall of the cylinder barrel, so that the friction force is small, and the installation and the disassembly are convenient; the middle part of the cylinder barrel is provided with a blocking part; the guide sleeve and the gland are separated and can float mutually, so that the sealing leakage caused by coaxiality deviation can be compensated, and the phenomenon that the oil cylinder is clamped due to concentricity of an assembled oil cylinder is prevented; the guide sleeve is directly pressed in the installation mode, and is directly pulled out in the disassembly mode, so that heat generated by friction is reduced, and an effective protection effect is achieved on a sealing element.
Description
Technical Field
The utility model relates to a hydraulic cylinder especially relates to a split type structure of hydraulic cylinder section of thick bamboo uide bushing.
Background
The hydraulic oil cylinder is widely applied to excavators, loaders, automobile cranes, crawler dozers, cranes, dump trucks, scrapers, land levelers, vibratory rollers and the like. Along with the development of science and technology and the demand of market, the cylinder diameter and the rod diameter of the hydraulic oil cylinder are continuously increased, the oil cylinder guide sleeve and the cylinder barrel connecting structure in the prior art are of an integral guide sleeve structure, and the guide sleeve is connected with the cylinder barrel by virtue of rectangular threads. The structure has small fit clearance between the cylinder barrel and the guide sleeve in threaded connection, and the guide sleeve and the roundness of the cylinder barrel have errors due to the action of internal stress after finish machining. In addition, the friction force of the dynamic seal, the static seal and the guide ring is difficult to install, the guide sleeve can be wholly deflected under the action of unbalance loading of the piston and the piston rod in the using process, and the outer leakage phenomenon can occur on one side with large clearance.
In the integral guide sleeve threaded connection structure in the prior art, a guide ring, a dynamic seal, a static seal and a dust ring on the guide sleeve rotate in the installation and disassembly projects, and heat is generated due to friction with a cylinder barrel, so that the sealing performance is affected, and even a sealing element can be damaged. This problem has long plagued the entire hydraulic manufacturing industry.
For example, chinese patent CN201843850U, published 2011, 05 and 25, a hydraulic cylinder assembly includes a cylinder barrel, and a guide sleeve, a piston and a piston rod accommodated in the cylinder barrel, wherein the guide sleeve is fixed at one end of the cylinder barrel, and a plurality of rubber sealing rings are disposed between the guide sleeve and a contact surface of the cylinder barrel; a copper sleeve is further arranged on the inner surface of the guide sleeve; the piston moves along the extending direction of the cylinder barrel; one end of the piston rod is connected to the piston and pushes the piston to move, the piston rod penetrates through the guide sleeve, and the copper sleeve of the guide sleeve is abutted to the piston rod. The utility model discloses a hydraulic cylinder subassembly sets up the copper sheathing that intensity is stronger and smooth finish is better through the internal surface at the uide bushing. Although the scheme adopts the copper sleeve with better finish, the friction between the guide sleeve and the piston rod is reduced, but the abrasion between the sealing element and the cylinder barrel and the piston rod still exists.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the existing hydraulic cylinder barrel has the technical problem that friction force between parts is large, so that the parts are abraded seriously, and the split type structure of the hydraulic cylinder guide sleeve with the light parts is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does: the utility model provides a split type structure of hydraulic cylinder uide bushing, its characterized in that includes cylinder and uide bushing, the cylinder with be equipped with the gland between the uide bushing, the cylinder with the gland is connected, be equipped with first sealing member on the uide bushing, be equipped with second sealing member and third sealing member on the gland.
A guide sleeve split type structure of a hydraulic oil cylinder is characterized in that a gland is arranged between the guide sleeve and a cylinder wall, and the gland is in threaded connection with an outer cylinder wall. Because the guide sleeve and the gland are separated and can float mutually, the sealing leakage caused by the coaxiality deviation can be compensated, and the phenomenon that the oil cylinder is blocked due to the concentricity problem during the assembly of the oil cylinder is prevented. The utility model discloses change the uide bushing into split type back, directly impress during the uide bushing installation, directly extract during the dismantlement, need not to rotate, played effectual guard action to the sealing member. The gland of the fixed guide sleeve is in threaded connection, and then the sealing element on the gland is not in direct contact with the piston rod and the inner wall of the cylinder barrel, so that the friction force between the sealing element and the cylinder barrel is very small, and the installation and the disassembly are very convenient.
Preferably, the gland is provided with an annular sealing groove for storing the second sealing element and an annular sealing groove for storing the third sealing element, the guide sleeve is provided with an annular sealing groove for storing the first sealing element, and the sealing groove is used for storing the sealing elements.
Preferably, the cross sectional area of the annular sealing groove for storing the second sealing element on the gland is larger than that of the second sealing element, the cross sectional area of the annular sealing groove for storing the third sealing element on the gland is larger than that of the third sealing element, and the cross sectional area of the annular sealing groove for storing the first sealing element on the guide sleeve is larger than that of the first sealing element, so that the sealing elements are not in direct contact with the piston rod and the inner wall of the cylinder barrel, friction is reduced, and the service life of parts is prolonged.
Preferably, the side part of the guide sleeve is provided with a limiting part, and the protruding part clamps the blocking part to prevent the guide sleeve from further penetrating.
Preferably, a stopping part is arranged at the joint of the limiting part and the cylinder barrel and is combined with the limiting part to determine the deepest position of the guide sleeve and prevent the top end from being in contact with the cylinder barrel to be abraded.
Preferably, the end of the guide sleeve is provided with a guide part, so that the pressing-in is more smooth during the installation.
Preferably, the gland is located at one end, far away from the guide part, of the limiting part, and the split structure of the gland and the guide sleeve can make up for sealing leakage caused by coaxiality deviation and prevent the oil cylinder from being clamped due to concentricity during oil cylinder assembly.
Preferably, the cylinder barrel is in threaded connection with the gland, so that connection is reliable and firm.
The utility model discloses a substantive effect is: the utility model discloses a hydraulic cylinder includes the split type structure of above-mentioned uide bushing, and this split type uide bushing structure is the uide bushing body of packing into earlier when the assembly, directly impresses during the uide bushing installation, and the dismantlement is directly extracted, need not the rotation, has reduced the heat that the friction produced, has played effectual guard action to the sealing member. The gland of the fixed guide sleeve is in threaded connection, and then the sealing element on the gland is not in direct contact with the piston rod and the inner wall of the cylinder barrel, so that the friction force between the sealing element and the cylinder barrel is very small, the service life of parts is prolonged, and the installation and the disassembly are very convenient. Because the guide sleeve and the gland are separated and can float mutually, the sealing leakage caused by the coaxiality deviation can be compensated, and the phenomenon that the oil cylinder is blocked due to the concentricity problem during the assembly of the oil cylinder is prevented.
Drawings
FIG. 1 is a schematic structural diagram of the embodiment
Wherein: 1. the cylinder, 2, guide part, 3, first sealing member, 4, uide bushing, 5, gland, 6, second sealing member, 7, third sealing member, 8, spacing portion, 9, stop part.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The utility model provides a split type structure of hydraulic cylinder uide bushing, as shown in figure 1, cylinder 1 is equipped with gland 5 with uide bushing 4, threaded connection between gland 5 and the cylinder 1, and the tip of uide bushing 4 is equipped with guide part 2, and the uide bushing 4 of being convenient for is directly impressed when the installation, directly extracts during the dismantlement, need not to rotate, can prevent that first sealing member 3, second sealing member 6, third sealing member 7 from leading to the fact the damage because of producing the heat with the friction of cylinder 1. Then, the screw thread on the gland 5 is connected with the screw thread on the inner wall of the cylinder barrel 1, and the limiting part 8 and the blocking part 9 are combined to fix the guide sleeve 4 and prevent the guide sleeve 4 from moving.
Because the guide sleeve 4 and the gland 5 are separated and can float mutually, the sealing leakage caused by the coaxiality deviation can be compensated, and the phenomenon that the oil cylinder is blocked due to the concentricity problem during the assembly of the oil cylinder is prevented. The first sealing element 3, the second sealing element 6 and the third sealing element 7 on the secondary press cover are not in direct contact with the piston rod and the cylinder barrel 1, the friction force between the first sealing element and the cylinder barrel 1 is small, and the installation and the disassembly are convenient.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (8)
1. The utility model provides a split type structure of hydraulic cylinder uide bushing, its characterized in that, includes cylinder (1) and uide bushing (4), cylinder (1) with be equipped with gland (5) between uide bushing (4), cylinder (1) with gland (5) are connected, be equipped with first sealing member (3) on the uide bushing, be equipped with second sealing member (6) and third sealing member (7) on gland (5).
2. The split type structure of the guide sleeve of the hydraulic oil cylinder as claimed in claim 1, wherein the gland (5) is provided with an annular seal groove for storing the second sealing element (6) and another annular seal groove for storing the third sealing element (7), and the guide sleeve (4) is provided with an annular seal groove for storing the first sealing element (3).
3. The split type structure of the guide sleeve of the hydraulic oil cylinder according to claim 2, wherein the cross-sectional area of the annular sealing groove for storing the second sealing element (6) on the gland (5) is larger than that of the second sealing element (6), the cross-sectional area of the annular sealing groove for storing the third sealing element (7) on the gland (5) is larger than that of the third sealing element (7), and the cross-sectional area of the annular sealing groove for storing the first sealing element (3) on the guide sleeve (4) is larger than that of the first sealing element (3).
4. The split type structure of the guide sleeve of the hydraulic oil cylinder according to claim 1, wherein a limiting part (8) is arranged at the side part of the guide sleeve (4).
5. The split type structure of the guide sleeve of the hydraulic oil cylinder as claimed in claim 4, wherein a stop part (9) is arranged at the joint of the limiting part (8) and the cylinder barrel (1).
6. The split type structure of the guide sleeve of the hydraulic oil cylinder according to claim 1, wherein a guide part (2) is arranged at the end part of the guide sleeve (4).
7. The split type structure of the guide sleeve of the hydraulic oil cylinder is characterized in that the gland (5) is positioned at one end of the limiting part (8) far away from the guide part (2).
8. The split type structure of the guide sleeve of the hydraulic oil cylinder as claimed in claim 1, wherein the cylinder barrel (1) is in threaded connection with the gland (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066757.3U CN218207311U (en) | 2022-08-03 | 2022-08-03 | Split type structure of hydraulic cylinder uide bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222066757.3U CN218207311U (en) | 2022-08-03 | 2022-08-03 | Split type structure of hydraulic cylinder uide bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207311U true CN218207311U (en) | 2023-01-03 |
Family
ID=84653725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222066757.3U Active CN218207311U (en) | 2022-08-03 | 2022-08-03 | Split type structure of hydraulic cylinder uide bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218207311U (en) |
-
2022
- 2022-08-03 CN CN202222066757.3U patent/CN218207311U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 4387 Jianshe Fourth Road, Xinjie Street, Xiaoshan District, Hangzhou City, Zhejiang Province, 311217 Patentee after: Zhejiang Avant Hydraulic Technology Co.,Ltd. Address before: 311200 yuansha village, Xinjie street, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG AFANTE PREC EQUIPMENT MFG Co.,Ltd. |