CN207814079U - A kind of fork truck lifting oil cylinder - Google Patents
A kind of fork truck lifting oil cylinder Download PDFInfo
- Publication number
- CN207814079U CN207814079U CN201721801637.6U CN201721801637U CN207814079U CN 207814079 U CN207814079 U CN 207814079U CN 201721801637 U CN201721801637 U CN 201721801637U CN 207814079 U CN207814079 U CN 207814079U
- Authority
- CN
- China
- Prior art keywords
- ring
- piston
- cylinder
- piston rod
- fork truck
- Prior art date
- 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.)
- Active
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model is related to a kind of oil cylinders, more particularly to a kind of fork truck lifting oil cylinder, including piston, cylinder body and piston rod, one end of the piston rod is connect with the piston, the other end of the piston rod stretches out the cylinder body, it is characterized in that, the upper cover of piston rod is equipped with resilient snubber, the inner wall clearance fit of the outer ring of the resilient snubber and the cylinder body, the resilient snubber can be with the piston motion, when the piston rod extend out to maximum position, the resilient snubber is contacted and is extruded with the cylinder body.The fork truck lifting oil cylinder of the utility model, by being arranged resilient snubber on the piston rod, resilient snubber can be with piston motion, when fork truck lifting oil cylinder, which rises, to be risen to close to peak, piston rod extend out to maximum position, resilient snubber is contacted and is extruded with cylinder body, converts axial impact kinetic energy to the elastic potential energy of resilient snubber, to reduce elliptical gear to realize buffering.
Description
Technical field
The utility model is related to a kind of oil cylinders, more particularly to a kind of fork truck lifting oil cylinder.
Background technology
Fork truck is mainly used for carrying out stacking to cargo, lift oil tank is as fork as the main force in material conveyance equipment
The important component of vehicle hoisting system is directly related to the performance of fork truck.Lift oil tank in forklift door frame is in raising
At the end of, vibrations are generated since inertia leads to elliptical gear, are easily damaged cargo.Moreover, because fork truck oil cylinder is longer, even if
Larger vibrations can also be caused by being small vibrations, to be impacted to the stability of entire fork truck.Meanwhile it also can serious shadow
Ring the service life of oil cylinder.It is, therefore, necessary to braking appropriate and buffering be carried out before lift oil tank terminates to move, to ensure raising
The service life of oil cylinder.
Existing fork truck lifting oil cylinder buffer unit is generally arranged according to the principle of throttling.Specifically, work as lift oil tank
It rises when rise to close to peak, the big throttle orifice on piston rod top enters in oil cylinder guide sleeve, and then by oil cylinder guide sleeve
It closes, the indoor hydraulic oil of rod chamber can only stay back the rodless cavity of piston lower portion by the micro orifice of underpart of the piston rod in cylinder barrel
Room.Due to the throttling action of micro orifice so that the rising resistance of piston increases, and is realized to reduce the movement velocity of piston
Buffering.
But since the internal diameter of cylinder of lift oil tank with the outer diameter of piston rod differs smaller, trapped fuel amount is less in cylinder barrel, adds
Oil cylinder movement speed it is very fast, so restriction effect is not obvious, impact when lift oil tank rises to end position is still very
Greatly.
Utility model content
Technical problem to be solved in the utility model is：It is rushed at the end of for fork truck lifting oil cylinder raising in the prior art
Larger problem is hit, a kind of fork truck lifting oil cylinder is provided.
In order to solve the above technical problems, the utility model embodiment provides a kind of fork truck lifting oil cylinder, including piston, cylinder body
And piston rod, one end of the piston rod are connect with the piston, the other end of the piston rod stretches out the cylinder body, feature
It is, the upper cover of piston rod is equipped with resilient snubber, and the outer ring of the resilient snubber and the inner wall gap of the cylinder body are matched
Close, the resilient snubber can with the piston motion, when the piston rod extend out to maximum position, the resilient snubber with
The cylinder body is contacted and is extruded.
Optionally, the cylinder body include cylinder barrel, be arranged described cylinder barrel one end pedestal and setting it is another in the cylinder barrel
The cylinder cap at end, the other end of the piston rod are stretched out from the middle part of the cylinder cap, and the piston is by the inner space of the cylinder body
Be separated into rodless cavity room and rod chamber room, the pedestal be equipped be connected to the rodless cavity room into oil road, the elasticity
The inner wall clearance fit of the outer ring of bolster and the cylinder barrel；
When the piston rod extend out to maximum position, the resilient snubber is contacted and is extruded with the cylinder cap.
Optionally, the peripheral surface clearance fit of the inner ring of the resilient snubber and the piston rod, the elastic buffer
The side end face far from the cylinder cap of part is resisted against on the piston.
Optionally, the resilient snubber is ring spring, and the ring spring includes the first end ring, inner ring, second end
Ring and outer shroud, the quantity of the outer shroud than the inner ring quantity more than one, first end ring and the adjacent inner ring it
Between, form inner conical surface between second end ring and the adjacent inner ring and between adjacent two inner ring, it is described
The inner ring of outer shroud is formed with the male cone (strobilus masculinus) that cone match is formed with the inner conical surface.
Optionally, the pedestal is equipped with hollow columnar projections close to the center of the end face of the piston, and the piston leans on
The end face of the nearly pedestal is equipped with step blind hole, and the major diameter section of the step blind hole is equipped with baffle ring close to the base position, described
Axle sleeve is slidably provided between baffle ring and the step surface of the step blind hole, the axle sleeve is set close to one end of the baffle ring
Jagged, the outer ring of the axle sleeve and the hole wall of the major diameter section of the step blind hole form the first gap, the inner ring of the axle sleeve
The second gap, the path section of the peripheral surface of the columnar projections and the step blind hole are formed with the peripheral surface of the columnar projections
Hole wall form third space, the height of the columnar projections is less than the depth of the step blind hole.
Optionally, first gap is more than second gap.
Optionally, the axle sleeve is elastic shaft sleeve.
Optionally, the cylinder cap is threadedly coupled with the cylinder barrel, and the mating surface edge of the cylinder cap and the piston rod is close
The direction of the piston is equipped with dustband, the first sealing ring and pilot bushing successively.
Optionally, the piston rod is the hollow circular tube of both ends open, and one end of the piston is provided with socket cap, described
Socket cap is plugged in the interior end opening of the piston rod, and a plug is threaded in the outer end opening of the piston rod.
Optionally, the mating surface of the piston and the cylinder barrel along close to the direction of the pedestal successively equipped with antifouling ring,
Second sealing ring, wearing ring and third sealing ring.
The fork truck lifting oil cylinder of the utility model embodiment, by being arranged resilient snubber, elastic buffer on the piston rod
Part can be with piston motion, when fork truck lifting oil cylinder, which rises, to be risen to close to peak, and piston rod extend out to maximum position, and elasticity is slow
Stamping is contacted and is extruded with cylinder body, converts axial impact kinetic energy to the elastic potential energy of resilient snubber, to reduce fortune
Dynamic impact is to realize buffering.
Description of the drawings
Fig. 1 is fork truck lifting oil cylinder the showing when piston rod bounces back to maximum position that one embodiment of the utility model provides
It is intended to；
Fig. 2 is fork truck lifting oil cylinder the showing when piston rod extend out to maximum position that one embodiment of the utility model provides
It is intended to；
Reference numeral in specification is as follows：
1, piston；101, baffle ring；102, axle sleeve；103, the first gap；104, the second gap；105, notch；106, third
Gap；107, socket cap；
2, cylinder body；201, cylinder barrel；202, pedestal；2021, into oil road；2022, columnar projections；203, cylinder cap；
3, piston rod；301, plug；
4, ring spring；401, the first end ring；402, inner ring；403, the second end ring；404, outer shroud；
5, dustband；
6, the first sealing ring；
7, pilot bushing；
8, antifouling ring；
9, the second sealing ring；
10, wearing ring；
11, third sealing ring；
12, rod chamber room；
13, rodless cavity room.
Specific implementation mode
The technical issues of in order to keep the utility model solved, technical solution and advantageous effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the utility model is described in further detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
As shown in Figures 1 and 2, one embodiment of the utility model provide fork truck lifting oil cylinder, including piston 1, cylinder body 2 and
Piston rod 3, the cylinder body 2 include cylinder barrel 201, are arranged in the pedestal 202 of 201 one end of the cylinder barrel and setting in the cylinder barrel
The cylinder cap 203 of 201 other ends, one end of the piston rod 3 are connect with the piston 1, and the other end of the piston rod 3 is from described
The middle part of cylinder cap 203 is stretched out, and the inner space of the cylinder body 2 is separated into rodless cavity room 13 and rod chamber room 12 by the piston 1,
The pedestal 202 be equipped be connected to the rodless cavity room 13 into oil road 2021, flexible delay is arranged on the piston rod 3
Stamping, the inner wall clearance fit of the outer ring of the resilient snubber and the cylinder barrel 201, the resilient snubber can be with the work
1 movement of plug.
As shown in Fig. 2, when the piston rod 3 extend out to maximum position, the resilient snubber is contacted with the cylinder cap 203
And be extruded, axial impact kinetic energy is converted to the elastic potential energy of the resilient snubber, to reduce elliptical gear with reality
Now buffer.
In one embodiment, as shown in Figures 1 and 2, the peripheral surface of the inner ring of the resilient snubber and the piston rod 3
The side end face far from the cylinder cap 203 of clearance fit, the resilient snubber is resisted against on the piston 1.
In one embodiment, as shown in Figures 1 and 2, the resilient snubber is ring spring 4, and the ring spring 4 wraps
Include the first end ring 401, inner ring 402, the second end ring 403 and outer shroud 404, the number of the quantity of the outer shroud 404 than the inner ring 402
More one of amount, between first end ring 401 and the adjacent inner ring 402, second end ring 403 with it is adjacent it is described in
Inner conical surface is formed between ring 402 and between adjacent two inner ring 402, the inner ring of the outer shroud 404 is formed with and institute
State the male cone (strobilus masculinus) that inner conical surface forms cone match.
When the piston rod 3 extend out to maximum position, the ring spring 4 is contacted and is extruded with the cylinder cap 203.
At this point, the ring spring 4 is by responsive to axial force, the outer shroud 404 and first end ring 401, inner ring 402 and second end
Ring 403 is opposite to be slided, and contact surface has prodigious frictional force, and axial force is by surface pressing and friction dynamic balance.By axial direction
Impact kinetic energy is converted into elastic potential energy, to reduce elliptical gear to realize buffering.
The inner ring 402 and the quantity of the outer shroud 404 can according to its borne load size and be deformed
It is required that determine.And it need not all be replaced after the ring spring 4 is damaged or worn out, the first end that need to will only scrap
Ring 401, inner ring 402, outer shroud 404 or the second end ring 403 are replaced, and repairing is more objective easily, also both economical.
In one embodiment, as shown in Figures 1 and 2, the pedestal 202 is equipped with close to the center of the end face of the piston 1
Hollow columnar projections 2022, the piston 1 are equipped with step blind hole close to the end face of the pedestal 202, the step blind hole
Major diameter section is equipped with baffle ring 101 at the pedestal 202, can be slided between the baffle ring 101 and the step surface of the step blind hole
Be provided with axle sleeve 102 dynamicly, the axle sleeve 102 is equipped with notch 105 close to one end of the baffle ring 101, the axle sleeve 102 it is outer
Circle and the hole wall of the major diameter section of the step blind hole form the first gap 103, the inner ring of the axle sleeve 102 and the columnar projections
2022 peripheral surface forms the second gap 104, the peripheral surface of the columnar projections 2022 and the path section of the step blind hole
Hole wall forms third space 106, and the height of the columnar projections 2022 is less than the depth of the step blind hole.
When the fork truck lifting oil cylinder bounces back, the piston 1 is transported with certain speed to close to the direction of the pedestal 202
Dynamic, the hydraulic oil in the rodless cavity room 13 is flowed out by described into oil road 2021.When the fork truck lifting oil cylinder bounces back to
When the columnar projections 2022 enter the position of the axle sleeve 102, the hydraulic oil in the rodless cavity room 13 passes through described first
Gap 103, the second gap 104 and third space 106 flow into described into oil road 2021, and running of hydraulic power oil speed slows down, described
Pressure in rodless cavity room 13 increases so that the axle sleeve 102 is resisted against on the step surface and forms sealing surface so that the nothing
Hydraulic oil in rod cavity room 13 can only be flowed into described into oil road by second gap 104 and the third space 106
2021.At this point, the pressure in the rodless cavity room 13 continues growing and generates larger propulsive thrust, the piston 1 is made to bounce back
Stroke terminal realizes successively decreasing for speed, until being zero.
When the fork truck lifting oil cylinder starts to stretch out, hydraulic oil enters from described into oil road 2021, and oil pressure will be described
Axle sleeve 102 is resisted against on the baffle ring 101, hydraulic oil by after the third space 106 simultaneously through first gap 103 and
Second gap 104 flows into the rodless cavity room 13, and quick oil feeding may be implemented.
In addition, the utility model embodiment can adjust buffer time by adjusting the size in second gap 104
Length.
In one embodiment, as shown in Figures 1 and 2, first gap 103 is more than second gap 104, when described
When fork truck lifting oil cylinder stretches out, hydraulic oil can quickly enter the rodless cavity room 13 by described into oil road 2021.
In one embodiment, as shown in Figures 1 and 2, the axle sleeve 102 is elastic shaft sleeve 102, in forklift lifting oil
Cylinder bounces back to maximum position constantly, can increase buffering effect.
In one embodiment, as shown in Figures 1 and 2, the cylinder cap 203 is threadedly coupled with the cylinder barrel 201, the cylinder cap
203 equipped with dustband 5, the first sealing ring 6 and lead with the mating surface of the piston rod 3 along close to the direction of the piston 1 successively
To bushing 7.
In one embodiment, as shown in Figures 1 and 2, the piston rod 3 is the hollow circular tube of both ends open, can be mitigated
The weight of the fork truck lifting oil cylinder.One end of the piston 1 is provided with socket cap 107, and the socket cap 107 is plugged on described
In the interior end opening of piston rod 3, a plug 301 is threaded in the outer end opening of the piston rod 3, can prevent dust into
Enter the fork truck lifting oil cylinder.
In one embodiment, as shown in Figures 1 and 2, the piston 1 and the mating surface edge of the cylinder barrel 201 are close described
The direction of pedestal 202 is equipped with antifouling ring 8, the second sealing ring 9, wearing ring 10 and third sealing ring 11 successively.
The fork truck lifting oil cylinder of the utility model embodiment, by being arranged resilient snubber, elastic buffer on the piston rod
Part can be with piston motion, when fork truck lifting oil cylinder, which rises, to be risen to close to peak, and piston rod extend out to maximum position, and elasticity is slow
Stamping is contacted and is extruded with cylinder body, converts axial impact kinetic energy to the elastic potential energy of resilient snubber, to reduce fortune
Dynamic impact is to realize buffering.
In addition, in other embodiments, the resilient snubber can also be rubber spring, disk spring or cylindrical screw
Spring etc..
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of fork truck lifting oil cylinder, including piston, cylinder body and piston rod, one end of the piston rod are connect with the piston,
The other end of the piston rod stretches out the cylinder body, which is characterized in that the upper cover of piston rod is equipped with resilient snubber, the bullet
The inner wall clearance fit of the outer ring and the cylinder body of property bolster, the resilient snubber can be with the piston motion, the work
When stopper rod extend out to maximum position, the resilient snubber is contacted and is extruded with the cylinder body.
2. fork truck lifting oil cylinder as described in claim 1, which is characterized in that the cylinder body includes cylinder barrel, is arranged in the cylinder
The pedestal of cylinder one end and cylinder cap in the cylinder barrel other end is set, the other end of the piston rod is stretched in the middle part of the cylinder cap
Go out, the inner space of the cylinder body is separated into rodless cavity room and rod chamber room by the piston, the pedestal be equipped with it is described
The connection of rodless cavity room into oil road, the inner wall clearance fit of the outer ring of the resilient snubber and the cylinder barrel；
When the piston rod extend out to maximum position, the resilient snubber is contacted and is extruded with the cylinder cap.
3. fork truck lifting oil cylinder as claimed in claim 2, which is characterized in that the inner ring of the resilient snubber and the piston
The side end face far from the cylinder cap of the peripheral surface clearance fit of bar, the resilient snubber is resisted against on the piston.
4. fork truck lifting oil cylinder as claimed in claim 2, which is characterized in that the resilient snubber is ring spring, described
Ring spring includes the first end ring, inner ring, the second end ring and outer shroud, the quantity of the outer shroud than the inner ring quantity more than one
It is a, between first end ring and the adjacent inner ring, between second end ring and the adjacent inner ring and adjacent
Two inner ring between form inner conical surface, the inner ring of the outer shroud is formed with forms the outer of cone match with the inner conical surface
The conical surface.
5. fork truck lifting oil cylinder as claimed in claim 2, which is characterized in that the end face of the close piston of the pedestal
Center is equipped with hollow columnar projections, and the piston is equipped with step blind hole, the step blind hole close to the end face of the pedestal
Major diameter section close to the base position be equipped with baffle ring, be mounted slidably between the baffle ring and the step surface of the step blind hole
There are axle sleeve, the axle sleeve to be equipped with notch, the major diameter of the outer ring of the axle sleeve and the step blind hole close to one end of the baffle ring
The hole wall of section forms the first gap, and the inner ring of the axle sleeve and the peripheral surface of the columnar projections form the second gap, the column
The peripheral surface of shape protrusion and the hole wall of the path section of the step blind hole form third space, and the height of the columnar projections is less than
The depth of the step blind hole.
6. fork truck lifting oil cylinder as claimed in claim 5, which is characterized in that first gap is more than second gap.
7. fork truck lifting oil cylinder as claimed in claim 5, which is characterized in that the axle sleeve is elastic shaft sleeve.
8. fork truck lifting oil cylinder as claimed in claim 2, which is characterized in that the cylinder cap is threadedly coupled with the cylinder barrel, institute
The mating surface for stating cylinder cap and the piston rod is equipped with dustband, the first sealing ring and guiding successively along close to the direction of the piston
Bushing.
9. fork truck lifting oil cylinder as described in claim 1, which is characterized in that the piston rod is the hollow circle of both ends open
Pipe, one end of the piston are provided with socket cap, and the socket cap is plugged in the interior end opening of the piston rod, the piston
A plug is threaded in the outer end opening of bar.
10. fork truck lifting oil cylinder as claimed in claim 2, which is characterized in that the mating surface edge of the piston and the cylinder barrel
It is equipped with antifouling ring, the second sealing ring, wearing ring and third sealing ring successively close to the direction of the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801637.6U CN207814079U (en) | 2017-12-20 | 2017-12-20 | A kind of fork truck lifting oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721801637.6U CN207814079U (en) | 2017-12-20 | 2017-12-20 | A kind of fork truck lifting oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814079U true CN207814079U (en) | 2018-09-04 |
Family
ID=63329583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721801637.6U Active CN207814079U (en) | 2017-12-20 | 2017-12-20 | A kind of fork truck lifting oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431816A (en) * | 2020-12-08 | 2021-03-02 | 四川凌峰航空液压机械有限公司 | Tail end buffer device for controlling movement speed of hydraulic actuator cylinder by oil damping |
| CN112571329A (en) * | 2021-01-06 | 2021-03-30 | 江苏合球机械科技有限公司 | A frock clamp for foundry goods |
-
2017
- 2017-12-20 CN CN201721801637.6U patent/CN207814079U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431816A (en) * | 2020-12-08 | 2021-03-02 | 四川凌峰航空液压机械有限公司 | Tail end buffer device for controlling movement speed of hydraulic actuator cylinder by oil damping |
| CN112431816B (en) * | 2020-12-08 | 2024-04-26 | 四川凌峰航空液压机械有限公司 | End buffer device for controlling movement speed of hydraulic actuating cylinder by oil damping |
| CN112571329A (en) * | 2021-01-06 | 2021-03-30 | 江苏合球机械科技有限公司 | A frock clamp for foundry goods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202175486U (en) | Hydraulic buffer of gas reset throttling hole for elevator | |
| CN201554719U (en) | High-speed two-out bar hydraulic cylinder cushion device | |
| CN202756521U (en) | Hydraulic recovery and cushion shock absorber | |
| CN207814079U (en) | A kind of fork truck lifting oil cylinder | |
| CN203585190U (en) | Multistage pressure-limiting regulating hydraulic buffer | |
| CN107795625B (en) | A kind of fluid pressure type damping buffer | |
| CN110254721A (en) | A kind of aerial dispensing buffer platform | |
| CN2835699Y (en) | Hydro-pneumatic buffer | |
| CN206458761U (en) | A kind of high-effect oil buffer | |
| CN205446253U (en) | Buffering hydraulic cylinder | |
| CN201526636U (en) | Low-speed bidirectional regulating type hydraulic buffer | |
| CN204419758U (en) | A kind of buffering hydraulic cylinder | |
| CN209493285U (en) | Fork truck buffer lift oil cylinder | |
| CN103629290B (en) | A kind of airplane buffer mutative damp spindle | |
| CN208885852U (en) | A kind of single valve piece inner wall throttle type Bidirectional damping mechanism and hydraulic shock-absorption piston | |
| CN105000447A (en) | Multi-groove oil buffer | |
| CN202545417U (en) | Floating buffer plunger structure | |
| CN204512282U (en) | A kind of two rod hydraulic damper | |
| CN108643744A (en) | A kind of damper | |
| CN205117886U (en) | Thrust is floated and is cushioned industrial furnace hydraulic cylinder | |
| CN209671511U (en) | A kind of hydraulic spring grease cup buffer | |
| CN205278210U (en) | Awl pole variable damping attenuator | |
| CN107514438A (en) | A kind of two-way hydraulic buffer | |
| CN205117887U (en) | Hydraulic cylinder is ground immediately to unsteady buffering of pulling force | |
| CN202756342U (en) | Long-stroke quick hydraulic cylinder buffer device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |