CN206738294U - Band safety valve oil cylinder - Google Patents
Band safety valve oil cylinder Download PDFInfo
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- CN206738294U CN206738294U CN201720527778.7U CN201720527778U CN206738294U CN 206738294 U CN206738294 U CN 206738294U CN 201720527778 U CN201720527778 U CN 201720527778U CN 206738294 U CN206738294 U CN 206738294U
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- piston
- safety lever
- oil cylinder
- safety
- piston rod
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Abstract
A kind of oil cylinder is the utility model is related to, more particularly, to a kind of band safety valve oil cylinder.Its piston rod for mainly solving present in prior art can have a strong impact on the technical problem of the intensity and normal work, the service life of the whole hydraulic jack of strong influence etc. of hydraulic cylinder and whole hydraulic system when all stretching out.The utility model includes cylinder barrel（1）, described cylinder barrel（1）Inside, which is worn, is connected to piston rod（2）, piston is connected with piston rod（3）, safe valve opening is provided with piston（4）, wear in safe valve opening and be connected to safety lever（5）, cylinder barrel is fixedly arranged at the front end with the guide sleeve for pushing safety lever（6）, guide sleeve offers oil return opening（7）.
Description
Technical field
A kind of oil cylinder is the utility model is related to, more particularly, to a kind of band safety valve oil cylinder.
Background technology
The piston rod of hydraulic jack has certain quality, with very big momentum when being moved under the driving of hydraulic coupling.
In their stroke terminal, when piston rod all stretches out, the mechanical collision of piston and guide sleeve can be caused, produce very big rush
Pressure and noise are hit, this will necessarily have a strong impact on the intensity and normal work of hydraulic cylinder and whole hydraulic system.Also have using slow
Flushing device, although avoiding this mechanical collision, surge is still present, about the 1.5~2 of rated operating pressure
Times, the strong influence service life of hydraulic jack.The rodless cavity persistent pressure of oil cylinder, the whole hydraulic oil of strong influence
The service life of cylinder, or even have an impact to the security of whole main frame.
Utility model content
The utility model is to provide a kind of band safety valve oil cylinder, and the piston rod that it is mainly solved present in prior art is complete
Portion can have a strong impact on the intensity and normal work of hydraulic cylinder and whole hydraulic system, strong influence whole hydraulic jack when stretching out
Service life etc. technical problem.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：
Band safety valve oil cylinder of the present utility model, including cylinder barrel, wear inside described cylinder barrel and be connected to piston rod, on piston rod
Piston is connected with, safe valve opening is provided with piston, is worn in safe valve opening and is connected to safety lever, cylinder barrel, which is fixedly arranged at the front end with, pushes safety
The guide sleeve of valve rod, guide sleeve offer oil return opening.Safety lever is handled through special surface, ensure the high rigidity of stem surface with
Wearability, and almost there is no deflection.Safety valve hole surface is through rolling processing.Safety lever can be freely movable on piston, its
Pushed by being directed to set to open valve port.
Preferably, the bottom of described piston offers the head recess that can accommodate safety lever head, safety lever
Top be connected with emergency valve nut, the nut groove that can accommodate emergency valve nut is offered at the top of piston.The top of piston
Equipped with emergency valve nut and split pin, it can prevent safety lever from coming off.
Preferably, the head of described safety lever is the conical surface, the opening of safe valve opening is provided with to be adapted with the conical surface
Chamfering.The conical surface is processed on safety lever head, can be coordinated with piston and is effectively formed cone sealing, when piston rises, safety lever
Cone sealing with piston ensures that oil cylinder does not leak, and safety lever and the safety valve interporal lacuna very little on piston, can effectively seal.
Preferably, offering four grooves on described safety lever, groove is not open-minded close to the bottom of piston.So
When piston rises to top, safety lever is pushed up back, ensure fluid quickly through safe valve opening, meet fluid when piston rod rises
Unimpeded no pulse.
Therefore, the utility model can realize that oil cylinder operates steadily, and can effectively reduce prevents mechanical collision, and hydraulic pressure is greatly improved
The service life of oil cylinder, it is simple and reasonable for structure.
Brief description of the drawings
Accompanying drawing 1 is structural representation when the utility model piston rod is begun to ramp up；
Accompanying drawing 2 is structural representation when the utility model piston rod rises to top.
Parts, position and numbering in figure：Cylinder barrel 1, piston rod 2, piston 3, safe valve opening 4, safety lever 5, guide sleeve
6th, oil return opening 7, head recess 8, emergency valve nut 9, nut groove 10, the conical surface 11, groove 12.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：The band safety valve oil cylinder of this example, as shown in Figure 1, Figure 2, including cylinder barrel 1, worn inside cylinder barrel and be connected to piston rod 2,
Piston 3 is connected with piston rod, safe valve opening 4 is provided with piston, is worn in safe valve opening and is connected to safety lever 5, cylinder barrel front end is consolidated
Surely there is the guide sleeve 6 for pushing safety lever, guide sleeve offers oil return opening 7.The bottom of piston, which offers, can accommodate safety lever 5
The head recess 8 on head, emergency valve nut 9 is connected with the top of safety lever, safety valve can be accommodated by being offered at the top of piston
The nut groove 10 of nut.The head of safety lever is the conical surface 11, and the opening of safe valve opening is provided with falls with what the conical surface was adapted
Angle.Four grooves 12 are offered on safety lever, groove is not open-minded close to the bottom of piston 3.
When piston 3 rises, such as Fig. 1, the cone sealing of safety lever 4 and piston 3 ensures that oil cylinder does not leak, and valve rod 4 is with living
Safety valve interporal lacuna very little on plug 3, can effectively be sealed.When piston 3 rises to top, such as Fig. 2, safety lever 4 is pushed up back, is returned
The oil return of hydraulic fluid port 7, ensure fluid quickly through safe valve opening 4, meet the unimpeded no pulse of fluid when the bar of piston 3 rises.
Specific embodiment of the utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made
Among the scope of the claims of type.
Claims (4)
1. a kind of band safety valve oil cylinder, including cylinder barrel（1）, it is characterised in that described cylinder barrel（1）Inside, which is worn, is connected to piston rod
（2）, piston is connected with piston rod（3）, safe valve opening is provided with piston（4）, wear in safe valve opening and be connected to safety lever（5）,
Cylinder barrel is fixedly arranged at the front end with the guide sleeve for pushing safety lever（6）, guide sleeve offers oil return opening（7）.
2. band safety valve oil cylinder according to claim 1, it is characterised in that described piston（3）Bottom offer and can hold
Receive safety lever（5）The head recess on head（8）, emergency valve nut is connected with the top of safety lever（9）, open at the top of piston
Provided with the nut groove that can accommodate emergency valve nut（10）.
3. band safety valve oil cylinder according to claim 1 or 2, it is characterised in that described safety lever（5）Head be
The conical surface（11）, safe valve opening（4）Opening be provided with the conical surface be adapted chamfering.
4. band safety valve oil cylinder according to claim 1 or 2, it is characterised in that described safety lever（5）On offer
Four grooves（12）, groove is close to piston（3）Bottom it is not open-minded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720527778.7U CN206738294U (en) | 2017-05-12 | 2017-05-12 | Band safety valve oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720527778.7U CN206738294U (en) | 2017-05-12 | 2017-05-12 | Band safety valve oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206738294U true CN206738294U (en) | 2017-12-12 |
Family
ID=60565650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720527778.7U Active CN206738294U (en) | 2017-05-12 | 2017-05-12 | Band safety valve oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206738294U (en) |
-
2017
- 2017-05-12 CN CN201720527778.7U patent/CN206738294U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |