CN206409459U - A kind of anti-fall hydraulic jack - Google Patents
A kind of anti-fall hydraulic jack Download PDFInfo
- Publication number
- CN206409459U CN206409459U CN201720000595.XU CN201720000595U CN206409459U CN 206409459 U CN206409459 U CN 206409459U CN 201720000595 U CN201720000595 U CN 201720000595U CN 206409459 U CN206409459 U CN 206409459U
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- cylinder body
- hydraulic jack
- piston
- fixed
- valve element
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Abstract
The utility model discloses a kind of anti-fall hydraulic jack, including the piston rod that cylinder body, the piston that is arranged in cylinder body and one end are fixedly connected with the piston；Piston rod side is fixed with positioning ring group, and positioning ring group includes fixed outer shroud, bearing inner ring and the support bar being fixed between fixed outer shroud and bearing inner ring, and fixed outer shroud is fixed on the inwall of cylinder body, and bearing inner ring is set with the piston rod；Cylinder body joint and oil pipe are connected with cylinder body, cylinder body joint is built with safety valve, safety valve includes valve body and valve element, valve element is provided with oilhole, screw is housed in valve element, screw outer end is positioned equipped with shrouding and with nut, and the spring connected with shrouding is cased with screw, and shrouding can cover the oilhole on valve element.The anti-fall hydraulic jack has the characteristics of security performance is high, axle center does not offset and clears up impurity automatically.
Description
Technical field
The utility model is related to a kind of hydraulic jack, and in particular to a kind of anti-fall hydraulic jack.
Background technology
Lift is a kind of plant equipment that object is risen or landed, and its hydraulic jack utilizes the liquid that fueller is provided
Pressure drives the piston rod of oil cylinder the load objects on lifting platform is risen or is landed.If lift is in lifting platform and loaded article
Body be in certain height when its oil pipe or oil connection burst or come off suddenly, then hydraulic oil can at once out of oil cylinder discharge and
Release, so that lifting platform and its load objects fall suddenly, causes object damage even casualties, there is serious peace
Full hidden danger.
Utility model content
The purpose of this utility model is to provide a kind of anti-fall hydraulic jack, with security performance is high, axle center is not offset and
The characteristics of automatic cleaning impurity.
For up to above-mentioned purpose, the technical scheme that the utility model is used is：A kind of anti-fall hydraulic jack, including cylinder are provided
The piston rod that body, the piston being arranged in cylinder body and one end are fixedly connected with the piston；Piston rod side is fixed with positioning ring group, fixed
Position ring group includes fixed outer shroud, bearing inner ring and the support bar being fixed between fixed outer shroud and bearing inner ring, fixed outer shroud
The inwall of cylinder body is fixed on, bearing inner ring is set with the piston rod；Cylinder body joint and oil pipe are connected with cylinder body, cylinder body connects
Head is built with safety valve, and safety valve includes valve body and valve element, and valve element, which is provided with oilhole, valve element, is equipped with screw, screw outer end dress
There is shrouding and positioned with nut, the spring connected with shrouding is cased with screw, and shrouding can cover the oilhole on valve element.
It is preferred that, cylinder base, which is provided with to be provided with taper surface, piston on bottom, cylinder base inwall, is provided with sealing
Device.
It is preferred that, sealing device is set to be arranged on the cushion being adapted on piston and with taper surface.
It is preferred that, it is located on cylinder body and is disposed with elastic seal ring from the inside to the outside at axis hole and covers with paint or varnish, the root covered with paint or varnish
It is additionally provided with the impurity groove of annular.
It is preferred that, the top of impurity groove is provided with the impurity enclosing cover of annular, inwall and is additionally provided with for fixing impurity enclosing cover
Block.
It is preferred that, the annular gland for limiting fixed outer shroud relative displacement is provided with the inwall of cylinder body.
In summary, the utility model has advantages below：
1st, the utility model is by setting safety valve so that when the lifting platform of carrying object is in certain height, work as oil
Pipe or oil connection etc. burst or come off suddenly, oil cylinder internal oil pressure is increased suddenly under lifting platform load effect, so as to close
Safety valve is closed, hydraulic oil is retained in cylinder body and piston rod is not returned downwards at once, cause lifting platform and loaded article
Body is temporarily retained in original height and caused damage without falling suddenly, improves the security performance of oil cylinder.
2nd, it can effectively ensure that the axle center of piston rod is not offset by positioning ring group, while will not excessively increase friction
Power；Simultaneously cover with paint or varnish the sliding capability that not only ensure that piston rod, automatically by lubricating oil add to piston rod and bearing inner ring on,
Impurity that simultaneously can be on brush lower piston rod, impurity will be brushed into impurity groove, is convenient to clean.
Brief description of the drawings
Fig. 1 is the schematic diagram of the anti-fall hydraulic jack of the utility model；
The enlarged diagram that Fig. 2 is A in Fig. 1；
Wherein, 1, cylinder body；2nd, piston；3rd, piston rod；4th, bottom；5th, cylinder body joint；6th, safety valve；7th, oil connection；
8th, oil pipe；9th, cushion；10th, taper surface；11st, cover with paint or varnish；12nd, impurity groove；13rd, impurity enclosing cover；14th, bearing inner ring；15th, support
Bar；16th, fixed outer shroud；17th, annular gland；18th, elastic seal ring；19th, shrouding；20th, nut；21st, oilhole；22nd, valve body；23、
Screw；24th, valve element；25th, spring.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In one embodiment of the present utility model, there is provided a kind of anti-fall hydraulic jack, including cylinder body as shown in Figure 1, 2
1st, the piston rod 3 that the piston 2 and one end being arranged in cylinder body 1 are fixedly connected with piston 2；The side of piston rod 3 is fixed with locating ring
Group, positioning ring group includes fixed outer shroud 16, bearing inner ring 14 and the branch being fixed between fixed outer shroud 16 and bearing inner ring 14
Strut 15, fixed outer shroud 16 is fixed on the inwall of cylinder body 1, and bearing inner ring 14 is sleeved on piston rod 3；Oil is connected with cylinder body 1
Cylinder joint 5 and oil pipe 8, cylinder body joint 5 include on valve body 22 and valve element 24, valve element 24 built with safety valve 6, safety valve 6
Provided with oilhole 21, screw 23 is housed in valve element 24, the outer end of screw 23 is positioned equipped with shrouding 19 and with nut 20, is cased with screw 23
The spring 25 connected with shrouding 19, and shrouding 19 can cover the oilhole 21 on valve element 24.
Optimal enforcement example of the present utility model, the bottom of cylinder body 1 is provided with bottom 4, the bottom interior wall of cylinder body 1 and is provided with taper
It is provided with sealing device on face 10, piston 2, sealing device is set to install the elasticity being adapted on the piston 2 and with taper surface 10
Pad 9；It is located on cylinder body 1 and is disposed with elastic seal ring 18 from the inside to the outside at axis hole and covers with paint or varnish 11, the root for covering with paint or varnish 11 is also set
It is equipped with the impurity groove 12 of annular, impurity enclosing cover 13 of the top provided with annular of impurity groove 12, inwall and is additionally provided with for fixing
The block of impurity enclosing cover 13.
Cylinder body joint 5 built with safety valve 6, wherein, the fueller phase that oil pipe 8 passes through oil connection 7 and lift
Even, the other end of the safety valve 6 connects with oil connection 7 again（I.e. safety valve 6 be connected in cylinder body joint 5 and oil connection 7 it
Between）, piston rod 3 is connected by transmission device with the lifting platform of lift, equipped with load objects on lifting platform.
When oil cylinder normal work, fueller carries out fuel feeding or oil return to oil cylinder, piston rod 3 is passed through transmission device band
Object on dynamic lifting platform rises or falls, and now the shrouding 19 on safety valve 6 is in open mode under spring force.When
When object is in certain height, if oil pipe or oil connection etc. burst or come off suddenly, in-oil cylinder hydraulic oil is rising
Pressure increases suddenly under drop platform load effect, so as to be covered after promoting the compression spring 25 of shrouding 19 on safety valve 6 on valve element 24
Oilhole 21（I.e. safety valve is closed）, hydraulic oil is retained in cylinder body and piston rod is not returned downwards at once, cause
Lifting platform and its carrying object are temporarily retained in original height without falling suddenly, improve the safety of lift and oil cylinder
Performance.
Although being described in detail with reference to accompanying drawing to embodiment of the present utility model, it should not be construed as pair
The restriction of the protection domain of this patent.In the scope described by claims, those skilled in the art are without creative labor
The dynamic various modification and variation that can be made still belong to the protection domain of this patent.
Claims (6)
1. a kind of anti-fall hydraulic jack, it is characterised in that：Including cylinder body（1）, be arranged on cylinder body（1）Interior piston（2）And one end
The piston rod being fixedly connected with the piston（3）；Piston rod（3）Side is fixed with positioning ring group, and positioning ring group includes fixed outer shroud
（16）, bearing inner ring（14）And it is fixed on fixed outer shroud（16）And bearing inner ring（14）Between support bar（15）, it is fixed outer
Ring（16）It is fixed on cylinder body（1）Inwall, bearing inner ring（14）It is sleeved on piston rod（3）On；Cylinder body（1）On be connected with cylinder body
Joint（5）And oil pipe（8）, the cylinder body joint（5）Built with safety valve（6）, safety valve（6）Including valve body（22）And valve element
（24）, the valve element（24）It is provided with oilhole（21）, the valve element（24）In be equipped with screw（23）, screw（23）Outer end is equipped with envelope
Plate（19）And use nut（20）Positioning, the screw（23）On be cased with and shrouding（19）The spring connected（25）, and shrouding（19）
The oilhole on valve element can be covered（21）.
2. anti-fall hydraulic jack as claimed in claim 1, it is characterised in that：The cylinder body（1）Bottom is provided with bottom（4）,
The cylinder body（1）Taper surface is provided with bottom interior wall（10）, the piston（2）On be provided with sealing device.
3. anti-fall hydraulic jack as claimed in claim 2, it is characterised in that：The sealing device is set to be arranged on piston
（2）Upper and and taper surface（10）The cushion of adaptation（9）.
4. anti-fall hydraulic jack as claimed in claim 1, it is characterised in that：The cylinder body（1）It is upper be located at axis hole by it is interior extremely
It is disposed with elastic seal ring outside（18）With cover with paint or varnish（11）, cover with paint or varnish（11）Root be additionally provided with annular impurity groove（12）.
5. anti-fall hydraulic jack as claimed in claim 4, it is characterised in that：The impurity groove（12）Top provided with annular
Impurity enclosing cover（13）, the block for fixing impurity enclosing cover is additionally provided with inwall.
6. anti-fall hydraulic jack as claimed in claim 1, it is characterised in that：The cylinder body（1）Inwall on be provided with and be used for
The fixed outer shroud of limitation（16）The annular gland of relative displacement（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720000595.XU CN206409459U (en) | 2017-01-03 | 2017-01-03 | A kind of anti-fall hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720000595.XU CN206409459U (en) | 2017-01-03 | 2017-01-03 | A kind of anti-fall hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206409459U true CN206409459U (en) | 2017-08-15 |
Family
ID=59551864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720000595.XU Active CN206409459U (en) | 2017-01-03 | 2017-01-03 | A kind of anti-fall hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206409459U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795543A (en) * | 2017-10-23 | 2018-03-13 | 西南交通大学 | A kind of steel arch-shelf for soft rock large deformation and release can component and steel arch frame construction method |
| CN112682385A (en) * | 2020-12-31 | 2021-04-20 | 杨明虎 | Self-cleaning tunneling hydraulic cylinder |
-
2017
- 2017-01-03 CN CN201720000595.XU patent/CN206409459U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795543A (en) * | 2017-10-23 | 2018-03-13 | 西南交通大学 | A kind of steel arch-shelf for soft rock large deformation and release can component and steel arch frame construction method |
| CN112682385A (en) * | 2020-12-31 | 2021-04-20 | 杨明虎 | Self-cleaning tunneling hydraulic cylinder |
| CN112682385B (en) * | 2020-12-31 | 2023-07-14 | 临沂市弘达机械有限公司 | Self-cleaning tunneling hydraulic cylinder |
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