CN202118228U - Piston fastening structure of heavy load oil cylinder - Google Patents
Piston fastening structure of heavy load oil cylinder Download PDFInfo
- Publication number
- CN202118228U CN202118228U CN2011200653620U CN201120065362U CN202118228U CN 202118228 U CN202118228 U CN 202118228U CN 2011200653620 U CN2011200653620 U CN 2011200653620U CN 201120065362 U CN201120065362 U CN 201120065362U CN 202118228 U CN202118228 U CN 202118228U
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- piston
- oil cylinder
- heavy load
- fastening structure
- key
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Abstract
A piston fastening structure of a heavy load oil cylinder comprises a piston and a piston rod which are matched with each other. A groove is arranged on the piston rod, a half blocking key is arranged in the groove, and the half blocking key is connected with the piston through a bolt. The half blocking key is integrally connected with the piston through the bolt, and the vast majority of force is delivered to the piston rod when force is exerted, so that anti-loosening effects are good. By means of the improvement, when the heavy load oil cylinder is in work, fastening and anti-loosening of the piston are greatly improved, the piston fastening structure can be guaranteed not to be loosened and fall off in a long time using and operation, failure rate of the oil cylinder is reduced, normal operation of the oil cylinder and a machine is guaranteed.
Description
Technical field:
The utility model belongs to technical field of hydraulic oil cylinder, relates to the design of piston fastening structure, and is especially relevant with the piston fastening structure of heavy load oil cylinder.
Background technique:
The piston fastening means of heavy load oil cylinder is generally two kinds: adopt slotted nut, or adopt locking nut, two kinds of fastening means respectively have pluses and minuses by comparison; The slotted nut reliability is very high, can not occur moving back the situation of pine or fastening inefficacy basically, but its shortcoming also clearly, and assembly process is complicated; Need earlier nut to be screwed to the torque value of regulation in the time of assembling, boring disassembles nut more then; The hole bur that is bored is removed, and iron filings are cleaned up, and then nut is screwed on; Reach the torque value of regulation, drilling is passed in cotter pin, be fixed.Its assembly technology is numerous and diverse, and inefficiency is as shown in Figure 1.And the assembly technology of locking nut (nylon locking nut) is simply many, directly nut is screwed on, and the torque value that reaches regulation gets final product; Manufacturing efficiency is high, but its fastening reliability will differ much than slotted nut, because the nylon locking nut is locking mainly by pre-fastening moment and embedded nylon locking thread; In the working procedure of heavy load oil cylinder, because its heavy duty that receives is repeatedly impacted, screw thread and nylon all can slowly lose efficacy; Cause thread damage or piston to come off, shown in Figure 2.
Summary of the invention:
The utility model purpose is to overcome above-mentioned shortcoming, and a kind of efficient height piston fastening structure of reliable heavy load oil cylinder again is provided.
For reaching above-mentioned purpose, the utility model adopts following technological scheme:
The piston fastening structure of heavy load oil cylinder comprises the piston and the piston rod that cooperatively interact, on piston rod, is provided with a groove, and half card key is inserted in the groove, and a screw will partly block key and piston connects.
Describedly partly block the structure that key is the small semicircle form.
Adopt technique scheme, the utility model will only need will partly block key then to insert groove at the piston rod groove of getting on the bus, and will partly block key and piston links together with screw, so just can well play fastening locking effect.Assembling is made the small semicircle form shown in figure four with partly blocking key for ease, so just is easy to assembling; After installing half card key, be screwed at groove to be on the piston end surface, to prevent that it from dropping out with partly blocking key; This structure aspect fastening and locking aspect very big advantage is all arranged, at first, its fastening reliability is very high; Work and stressing conditions according to oil hydraulic cylinder; Can the card key be designed to the width of needs, two and half card keys are cut in hydraulic cylinder works, and its safety coefficient can reach more than 10; Because screw will partly block key and piston links into an integrated entity, the power with the overwhelming majority in the time of stressed passes to piston rod, plays locking effect well.Through such improvement; In the work of heavily loaded oil cylinder, piston fastening and locking very big improvement arranged can guarantee that it can not become flexible and come off in long-term work is used; Reduce the rate of fault of hydraulic jack, greatly guaranteed the proper functioning of hydraulic jack and machine.
Description of drawings:
Below with accompanying drawing the utility model is specified:
Fig. 1 is the utility model existing technology structural representation one;
Fig. 2 is the utility model existing technology structural representation two;
Fig. 3 is the utility model structural representation;
Fig. 4 partly blocks the bond structure schematic representation for the utility model.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is detailed:
Fig. 3, shown in Figure 4 is the embodiment of the utility model,
The piston fastening structure of heavy load oil cylinder comprises the piston 1 and the piston rod 2 that cooperatively interact, on piston rod, is provided with a groove 3, and half card key 4 is inserted in the groove, and a screw 5 will partly block key and piston connects.Describedly partly block the structure that key is the small semicircle form.
The utility model will only need will partly block key then to insert groove at the piston rod groove of getting on the bus, and will partly block key and piston links together with screw, so just can well play fastening locking effect.Assembling is made the small semicircle form shown in figure four with partly blocking key for ease, so just is easy to assembling; After installing half card key, be screwed at groove to be on the piston end surface, to prevent that it from dropping out with partly blocking key; This structure aspect fastening and locking aspect very big advantage is all arranged, at first, its fastening reliability is very high; Work and stressing conditions according to oil hydraulic cylinder; Can the card key be designed to the width of needs, two and half card keys are cut in hydraulic cylinder works, and its safety coefficient can reach more than 10; Because screw will partly block key and piston links into an integrated entity, the power with the overwhelming majority in the time of stressed passes to piston rod, plays locking effect well.Through such improvement; In the work of heavily loaded oil cylinder, piston fastening and locking very big improvement arranged can guarantee that it can not become flexible and come off in long-term work is used; Reduce the rate of fault of hydraulic jack, greatly guaranteed the proper functioning of hydraulic jack and machine.
Claims (2)
1. the piston fastening structure of heavy load oil cylinder comprises the piston and the piston rod that cooperatively interact, it is characterized in that: on piston rod, be provided with a groove, half card key is inserted in the groove, and a screw will partly block key and piston connects.
2. the piston fastening structure of heavy load oil cylinder as claimed in claim 1 is characterized in that: describedly partly block the structure that key is the small semicircle form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200653620U CN202118228U (en) | 2011-03-11 | 2011-03-11 | Piston fastening structure of heavy load oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200653620U CN202118228U (en) | 2011-03-11 | 2011-03-11 | Piston fastening structure of heavy load oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118228U true CN202118228U (en) | 2012-01-18 |
Family
ID=45459295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200653620U Expired - Lifetime CN202118228U (en) | 2011-03-11 | 2011-03-11 | Piston fastening structure of heavy load oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077610A1 (en) * | 2020-10-16 | 2022-04-21 | 苏州舍勒智能科技有限公司 | Connecting structure for piston and piston rod of push rod cylinder |
-
2011
- 2011-03-11 CN CN2011200653620U patent/CN202118228U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077610A1 (en) * | 2020-10-16 | 2022-04-21 | 苏州舍勒智能科技有限公司 | Connecting structure for piston and piston rod of push rod cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |