CN204300022U - A kind of welding oil cylinder - Google Patents
A kind of welding oil cylinder Download PDFInfo
- Publication number
- CN204300022U CN204300022U CN201420716446.XU CN201420716446U CN204300022U CN 204300022 U CN204300022 U CN 204300022U CN 201420716446 U CN201420716446 U CN 201420716446U CN 204300022 U CN204300022 U CN 204300022U
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- oil cylinder
- welding
- cylinder body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a kind of oil cylinder, especially relates to a kind of welding oil cylinder.Its piston rod chuck(ing) capacity mainly solving the oil cylinder existing for prior art is low, nut torque can not reach product requirement, join brill cotter-pin hold simultaneously, inner burr is caused to clear up, therefore in product use procedure, the problems such as the nut that happens occasionally comes off, piston seal scuffing, have a strong impact on the technical problem that fork truck waits safely.The utility model comprises cylinder body (1), the two ends of described cylinder body (1) are respectively equipped with fairlead (2), capping (3), piston rod (4) is provided with in cylinder body, the inner of piston rod is welded with piston (5), piston and piston rod are interference fits, and piston is fixed together by one-sided welding and piston rod.
Description
Technical field
The utility model relates to a kind of oil cylinder, especially relates to a kind of welding oil cylinder.
Background technology
The problems such as existing complex process, cost are high, internal soundness hidden danger is larger; On traditional structure, the mode that piston and piston rod adopt nut to be connected, also needs to bore cotter-pin hold, then fitting opening pin after nut assembling; In this process, because piston rod chuck(ing) capacity is low, nut torque can not reach product requirement, join brill cotter-pin hold simultaneously, cause inner burr to clear up, therefore in product use procedure, the problems such as the nut that happens occasionally comes off, piston seal scuffing, have a strong impact on fork truck safety.
Utility model content
The utility model is to provide a kind of welding oil cylinder, its piston rod chuck(ing) capacity mainly solving the oil cylinder existing for prior art is low, nut torque can not reach product requirement, join brill cotter-pin hold simultaneously, inner burr is caused to clear up, therefore, in product use procedure, the problems such as the nut that happens occasionally comes off, piston seal scuffing, have a strong impact on the technical problem that fork truck waits safely.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
One welding oil cylinder of the present utility model, comprise cylinder body, the two ends of described cylinder body are respectively equipped with fairlead, capping, piston rod is provided with in cylinder body, the inner of piston rod is welded with piston, and piston and piston rod are interference fits, and piston is fixed together by one-sided welding and piston rod.The utility model, in operation, has following key technology to require: 1, the welding position of piston directly affects the range demands of product, therefore must ensure the welding position of piston; 2, because piston rod surface plating completes, in order to not because of welding cause influence piston rod electroplating quality and surface quality, therefore the welding position of piston and welding parameter, weld strength become key technical problems; 3, product requirement piston and piston rod need stable basic demand without clamping stagnation, operation in running, therefore ensure that the axiality of piston seal groove and support ring groove and piston rod is key technology of the present utility model.
In welding, when welding basic parameter and setting constant, the interference fits mode of piston and piston rod, gap is there is in cooperation, the gas that piston produces in welding process can be discharged by fit clearance, effectively avoid the generation of weld porosity, also effectively ensure that the intensity of welding simultaneously, improve welding quality; In welding protection, in order to not destroy piston rod electroplating surface, structure adopts the form of one-sided welding, by the Strength co-mputation in butt welded seam cross section, is rationally provided with the degree of depth and the width of weld seam; In weld jig, cancel traditional end face and hold mode, adopt protective-cover type dress top fixture, the inner lining soft material of sheath, prevents the scuffing of piston rod surface.
In the requirement of axiality, by processing rear engineer testing and contrast of welding and welding rear fine finishining groove to piston precision, welding procedure after piston precision processing, reduces difficulty of processing, but the axiality wanted as key technology require can not be stable guarantee; Welding procedure after piston roughing, effectively ensure that the axiality of piston channel and piston rod, but is the increase in the difficulty of processing of product, has turning iron filings to scratch the risk on piston rod electroplating surface simultaneously; The scheme that the utility model takes postwelding to process, simultaneously in turning process, piston rod surface takes sheath to protect, lining soft material in sheath, and the program effectively solves the problem of scuffing and product axiality.
As preferably, the inner of described piston rod is provided with limited step, and piston top is on limited step.Piston and piston rod increase limited step, take the tolerance form of interference fits, limit the position of piston on the one hand, can prevent again the variation of piston position.
As preferably, the cylindrical of described piston has seal groove, in seal groove, is embedded with seal.Seal can prevent fluid from pouring in down a chimney.
As preferably, between described fairlead and cylinder body, piston rod, be all provided with O type circle.O type circle can prevent external dust from invading in oil cylinder.
As preferably, the seal groove of described fairlead the inner is provided with the outer little interior large conical surface of diameter.By the closing in of the conical surface, can ensure that O type circle can not be extruded because of length service time one in seal groove, ensure that sealing.
Therefore, directly by piston welding on the piston rod, the chuck(ing) capacity of piston rod is high, and the burr of piston can be cleared up at any time, and piston seal is also not easily scratched for the utility model, and axiality is better, simple and reasonable for structure.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is A portion structure for amplifying schematic diagrames of Fig. 1.
Parts, position and numbering in figure: cylinder body 1, fairlead 2, capping 3, piston rod 4, piston 5, limited step 6, seal 7, O type circle 8, the conical surface 9.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the one welding oil cylinder of this example, as Fig. 1, comprises cylinder body 1, the two ends of cylinder body are respectively equipped with fairlead 2, capping 3, are provided with piston rod 4 in cylinder body, and the inner of piston rod is welded with piston 5, piston and piston rod are interference fits, and piston is fixed together by one-sided welding and piston rod.The inner of piston rod is provided with limited step 6, and piston 5 withstands on limited step.The cylindrical of piston has seal groove, in seal groove, is embedded with seal 7.O type circle 8 is all provided with between fairlead and cylinder body, piston rod.As Fig. 2, the seal groove of fairlead the inner is provided with the outer little interior large conical surface 9 of diameter.
During use, the utility model is encased in hydraulic system.
The foregoing is only specific embodiment of the utility model, but architectural feature of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (5)
1. a welding oil cylinder, comprise cylinder body (1), it is characterized in that the two ends of described cylinder body (1) are respectively equipped with fairlead (2), capping (3), piston rod (4) is provided with in cylinder body, the inner of piston rod is welded with piston (5), piston and piston rod are interference fits, and piston is fixed together by one-sided welding and piston rod.
2. one welding oil cylinder according to claim 1, it is characterized in that the inner of described piston rod (4) is provided with limited step (6), piston (5) withstands on limited step.
3. one welding oil cylinder according to claim 1 and 2, the cylindrical that it is characterized in that described piston (5) has seal groove, is embedded with seal (7) in seal groove.
4. one welding oil cylinder according to claim 1 and 2, is characterized in that all being provided with O type circle (8) between described fairlead (2) and cylinder body (1), piston rod (4).
5. one welding oil cylinder according to claim 1 and 2, is characterized in that the seal groove of described fairlead (2) the inner is provided with the outer little interior large conical surface (9) of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716446.XU CN204300022U (en) | 2014-11-26 | 2014-11-26 | A kind of welding oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716446.XU CN204300022U (en) | 2014-11-26 | 2014-11-26 | A kind of welding oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300022U true CN204300022U (en) | 2015-04-29 |
Family
ID=53105565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420716446.XU Expired - Fee Related CN204300022U (en) | 2014-11-26 | 2014-11-26 | A kind of welding oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204300022U (en) |
-
2014
- 2014-11-26 CN CN201420716446.XU patent/CN204300022U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20211126 |