CN115431035A - Assembling method of oil cylinder piston - Google Patents
Assembling method of oil cylinder piston Download PDFInfo
- Publication number
- CN115431035A CN115431035A CN202211165284.0A CN202211165284A CN115431035A CN 115431035 A CN115431035 A CN 115431035A CN 202211165284 A CN202211165284 A CN 202211165284A CN 115431035 A CN115431035 A CN 115431035A
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- cylinder
- piston
- groove
- cylinder barrel
- filler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
Abstract
The invention discloses an assembling method of an oil cylinder piston, which comprises the following steps: a. the cylinder head of the oil cylinder is detached from the cylinder barrel; b. filling a clamping ring groove or a tool withdrawal groove on the inner wall of the cylinder barrel with filler to ensure that the surface of the filler is smooth and is flush with the inner wall of the cylinder barrel; c. pulling the piston out of the cylinder; d. installing or replacing an oil seal on the piston; e. fitting a piston into a cylinder; f. removing the filler in the clamping ring groove or the tool withdrawal groove; g. and (4) re-mounting the cylinder head on the cylinder barrel to complete the assembly of the piston. According to the invention, the ring clamping groove or the tool withdrawal groove on the inner wall of the cylinder barrel is filled with the filler, and then the piston is assembled in the cylinder barrel, because the filled ring clamping groove or the tool withdrawal groove forms a smooth curved surface, the oil seal can easily slide and cannot be clamped, so that the assembly difficulty of the piston is greatly reduced, the assembly efficiency of the oil cylinder is improved, and the damage of the oil seal can be effectively prevented.
Description
Technical Field
The invention relates to a method for conveniently and safely assembling a piston and a cylinder barrel of an oil cylinder, belonging to the technical field of hydraulic pressure.
Background
The connection modes of the cylinder head and the cylinder barrel of the oil cylinder (hydraulic cylinder) mainly comprise two modes, one mode is that the cylinder head is fixed at the end part of the cylinder barrel through a clamping ring (as shown in figure 2), and a clamping ring groove matched with the clamping ring is formed in the inner wall of the cylinder barrel of the oil cylinder; the other is that the cylinder head is connected with the cylinder barrel through threads (as shown in figure 1), and the inner wall of the cylinder barrel of the oil cylinder is provided with a tool withdrawal groove. In the assembling process of the oil cylinder, because the outer diameter of an oil seal (sealing ring) arranged on the piston is larger than the inner diameter of the cylinder barrel in a natural state, and the lip of a common YX oil seal is turned outwards, when the oil seal slides to the position of a clamping ring groove or a tool withdrawal groove along the inner wall of the cylinder barrel, the lip of the oil seal can be clamped into the clamping ring groove or the tool withdrawal groove inevitably, so that the piston is difficult to enter, and at the moment, if the piston is pushed into the cylinder barrel forcibly, the oil seal is easy to damage under the action of shearing force, and the assembling failure is caused.
At present, a plurality of methods for solving the problems exist, a more common method is to smear oil on a lip of a YX ring, and the method has the defects that an oil seal can still be clamped into a clamping ring groove or a tool withdrawal groove, although a piston can smoothly enter a cylinder barrel, the safety of the oil seal cannot be ensured, and the service life of the oil seal can be seriously influenced; the other method is to use thin strip steel or copper sheet to wrap the YX oil seal and then push the piston into the cylinder barrel, and has the defects that the operation difficulty is high, the YX oil seal is possibly damaged when reaching the clamping ring groove or the tool withdrawal groove, the strip steel or the copper sheet is often broken and falls into the cylinder barrel, at the moment, the piston can only be pulled out, the strip steel or the copper sheet is taken out and then assembled again, the assembly efficiency is greatly reduced, and the labor intensity of workers is increased.
Disclosure of Invention
The invention aims to provide an assembling method of an oil cylinder piston, aiming at overcoming the defects of the prior art, so as to reduce the assembling difficulty of the piston, improve the assembling efficiency and prevent an oil seal from being damaged.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of assembling a cylinder piston, the method comprising the steps of:
a. the cylinder head of the oil cylinder is detached from the cylinder barrel;
b. filling a clamping ring groove or a tool withdrawal groove on the inner wall of the cylinder barrel with filler to ensure that the surface of the filler is smooth and is flush with the inner wall of the cylinder barrel;
c. pulling the piston out of the cylinder;
d. installing or replacing an oil seal on the piston;
e. fitting a piston into a cylinder;
f. removing the filler in the clamping ring groove or the tool withdrawal groove;
g. and (4) re-installing the cylinder head on the cylinder barrel to complete the assembly of the piston.
In the assembling method of the oil cylinder piston, the filler is a house adhesive, and the concrete steps of filling the clamping ring groove or the tool withdrawal groove on the inner wall of the cylinder barrel with the house adhesive are as follows:
a. mixing the house adhesive with water to form paste;
b. filling the clamping ring groove or the tool withdrawal groove with a well-adjusted house adhesive, and shaping the house adhesive in a humid environment to enable the house adhesive to protrude out of the inner wall of the cylinder barrel;
c. standing for a certain time after shaping, and grinding the house binder with sand paper after the house binder is cured to reach certain hardness to form a smooth surface which is flush with the inner wall of the cylinder barrel.
According to the assembling method of the oil cylinder piston, before the adhesive of the house with the clamping ring groove or the tool withdrawal groove is filled, wax or grease is coated in the clamping ring groove or the tool withdrawal groove, so that the binding force between the house adhesive and the inner wall of the clamping ring groove or the tool withdrawal groove is weakened.
According to the assembling method of the oil cylinder piston, the house adhesive can be watertight or gypsum powder.
According to the assembling method of the oil cylinder piston, the filler is an elastic ring embedded into the clamping ring groove or the tool withdrawal groove, and the elastic modulus of the elastic ring is greater than that of the oil seal.
According to the assembling method of the oil cylinder piston, the elastic ring is formed by butting three sections of arc-shaped strips.
According to the assembling method of the oil cylinder piston, the elastic ring is made of rubber or plastic.
According to the invention, the ring clamping groove or the tool withdrawal groove on the inner wall of the cylinder barrel is filled with the filler, and then the piston is assembled in the cylinder barrel, because the filled ring clamping groove or the tool withdrawal groove forms a smooth curved surface, the oil seal can easily slide and cannot be clamped, so that the assembly difficulty of the piston is greatly reduced, the assembly efficiency of the oil cylinder is improved, and the damage of the oil seal can be effectively prevented.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of an oil cylinder with a cylinder head fixed by threads;
FIG. 2 is a schematic structural diagram of an oil cylinder with a cylinder head fixed by a snap ring;
FIG. 3 is a schematic view of an oil seal snap-in tool withdrawal groove;
fig. 4 is a schematic view of the cylinder assembly of the present invention.
The reference numbers in the figures are as follows: 1. oil seal, 2, piston, 3, cylinder barrel, 4, tool withdrawal groove, 5, cylinder head, 6, cylinder rod, 7, snap ring, 8 and filler.
Detailed Description
The invention aims to improve the work efficiency of replacing the YX oil seal, ensure the service cycle of the oil seal, and reduce the failure rate of parking, thereby ensuring the production time and yield. In order to achieve the purpose, the invention improves the assembling method of the oil cylinder.
The invention fills the clamping ring groove or the tool withdrawal groove with a filler, so that the YX oil seal on the piston is very easy to install, and the problems in the background technology are solved.
The filling 8 may be a house adhesive or an elastic ring made of rubber or plastic, which needs to be shaped and cured and is difficult to remove, thus taking a long time, and therefore a house adhesive with a short curing time should be selected. In order to reduce the production costs, a house adhesive which is inexpensive and easy to find should be chosen, which has the advantage of making the inner wall of the cylinder more smooth. The elastic ring has the advantages of being convenient and fast to operate and capable of greatly improving assembling efficiency. The elastic ring with certain elasticity can be used for facilitating the assembly and disassembly of the oil seal, and in order to prevent the elastic ring from being pressed into a clamping ring groove or a tool withdrawal groove by the oil seal, the elastic modulus of the elastic ring is greater than that of the oil seal 1, namely the elastic ring is harder than the oil seal.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in the following with reference to the accompanying drawings in the embodiments for clear and complete description of the technical solutions in the embodiments of the present invention.
Taking a house adhesive as an example, when the cylinder head is fixed by the snap ring, the assembly method of the oil cylinder is as follows:
1. the snap ring 7 is removed, the snap ring 7 is composed of three sections, the removal is easy, and the snap ring has the function of blocking the cylinder head 5, as shown in fig. 2.
2. Filling the ring groove with a prepared house adhesive, shaping in a wet environment, standing for a certain time after shaping, and grinding with abrasive paper after the house adhesive is cured and has certain hardness to form a smooth surface. In order to be convenient to remove, wax or grease can be coated in the clamping ring groove before filling.
3. The piston is dismantled, and the piston is dismantled smoothly because the clamping ring groove is processed.
4. The oil seal can be replaced after the piston is disassembled, the cylinder barrel can be checked and repaired, the cylinder rod can be repaired, and the like.
5. And after repairing, assembling, namely installing the piston, installing the cylinder head, removing the filler 8, cleaning, and installing the clamping ring.
When the cylinder head is fixed by threads, the assembly method of the oil cylinder is as follows:
1. the cylinder head is detached.
2. Filling the tool withdrawal groove with a prepared house binder, shaping in a wet environment, standing for a certain time after shaping is finished, and grinding the house binder with abrasive paper after the house binder is cured and has certain hardness to form a smooth surface.
3. The piston is dismantled, and the piston is dismantled smoothly because the tool withdrawal groove is processed.
4. The oil seal can be replaced after being disassembled, the cylinder barrel can be checked and repaired, the cylinder rod can be repaired, and the like.
5. And (3) after repairing, assembling, namely installing a piston (shown in figure 4), removing the filler 8, cleaning by using compressed air, and installing a cylinder head.
The method has the advantages of simple operation, high working efficiency, no damage to the oil seal, long service cycle and the like.
Claims (7)
1. An assembly method of an oil cylinder piston is characterized by comprising the following steps:
a. the cylinder head (5) of the oil cylinder is detached from the cylinder barrel (3);
b. filling a clamping ring groove or a tool withdrawal groove (8) on the inner wall of the cylinder barrel (3) with filler (8) to ensure that the surface of the filler (8) is smooth and is flush with the inner wall of the cylinder barrel (3);
c. pulling the piston (2) out of the cylinder (3);
d. an oil seal (1) is installed or replaced on the piston (2);
e. fitting a piston (2) into a cylinder (3);
f. removing the filler (8) in the clamping ring groove or the tool withdrawal groove (8);
g. and (5) reinstalling the cylinder head onto the cylinder barrel (3) to complete the assembly of the piston.
2. The assembling method of the cylinder piston as claimed in claim 1, wherein the filler (8) is a house adhesive, and the concrete steps of filling the snap ring groove or the tool withdrawal groove (8) on the inner wall of the cylinder barrel (3) with the house adhesive are as follows:
a. mixing the house adhesive with water to form paste;
b. filling the clamping ring groove or the tool withdrawal groove (8) with a well-adjusted house adhesive, and shaping the house adhesive in a humid environment to enable the house adhesive to protrude out of the inner wall of the cylinder barrel (3);
c. standing for a certain time after shaping, and grinding the house adhesive by using abrasive paper after the house adhesive is cured to reach certain hardness so as to form a smooth surface which is flush with the inner wall of the cylinder barrel (3).
3. The method for assembling a cylinder piston according to claim 2, wherein before the snap ring groove or the undercut groove (8) is filled with the house adhesive, wax or grease is applied to the snap ring groove or the undercut groove (8) to weaken the bonding force between the house adhesive and the inner wall of the snap ring groove or the undercut groove (8).
4. A method of assembling a cylinder piston as claimed in claim 3, wherein said house adhesive is water-tight or gypsum powder.
5. The method for assembling the cylinder piston according to claim 1, wherein the filler (8) is an elastic ring embedded in the snap ring groove or the tool withdrawal groove (8), and the elastic modulus of the elastic ring is greater than that of the oil seal (1).
6. The method as claimed in claim 5, wherein the elastic ring is formed by butt-jointing three arc-shaped strips.
7. The method for assembling a cylinder piston as claimed in claim 6, wherein the elastic ring is made of rubber or plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211165284.0A CN115431035A (en) | 2022-09-23 | 2022-09-23 | Assembling method of oil cylinder piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211165284.0A CN115431035A (en) | 2022-09-23 | 2022-09-23 | Assembling method of oil cylinder piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115431035A true CN115431035A (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211165284.0A Pending CN115431035A (en) | 2022-09-23 | 2022-09-23 | Assembling method of oil cylinder piston |
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| Country | Link |
|---|---|
| CN (1) | CN115431035A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650733U (en) * | 1992-12-16 | 1994-07-12 | 本田技研工業株式会社 | V-shaped packing fitting jig |
| JPH08193661A (en) * | 1995-01-13 | 1996-07-30 | Jatco Corp | Oil seal device and discharge valve |
| CN203510107U (en) * | 2013-06-26 | 2014-04-02 | 无锡商业职业技术学院 | Installation tool for piston of piston rod of hydraulic oil cylinder |
| CN103737551A (en) * | 2013-12-23 | 2014-04-23 | 潍坊昌大建设集团有限公司 | Assembling tool and process of jacking hydraulic oil cylinder piston |
| CN203680225U (en) * | 2013-12-23 | 2014-07-02 | 潍坊昌大建设集团有限公司 | Assembly tool of jacking hydraulic oil cylinder piston |
| CN111251250A (en) * | 2020-02-29 | 2020-06-09 | 唐山钢铁集团有限责任公司 | Tool and method for mounting piston oil ring of internal combustion engine |
-
2022
- 2022-09-23 CN CN202211165284.0A patent/CN115431035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650733U (en) * | 1992-12-16 | 1994-07-12 | 本田技研工業株式会社 | V-shaped packing fitting jig |
| JPH08193661A (en) * | 1995-01-13 | 1996-07-30 | Jatco Corp | Oil seal device and discharge valve |
| CN203510107U (en) * | 2013-06-26 | 2014-04-02 | 无锡商业职业技术学院 | Installation tool for piston of piston rod of hydraulic oil cylinder |
| CN103737551A (en) * | 2013-12-23 | 2014-04-23 | 潍坊昌大建设集团有限公司 | Assembling tool and process of jacking hydraulic oil cylinder piston |
| CN203680225U (en) * | 2013-12-23 | 2014-07-02 | 潍坊昌大建设集团有限公司 | Assembly tool of jacking hydraulic oil cylinder piston |
| CN111251250A (en) * | 2020-02-29 | 2020-06-09 | 唐山钢铁集团有限责任公司 | Tool and method for mounting piston oil ring of internal combustion engine |
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