CN104817043B - Throttle slow descending cylinder of hand operated hydraulic fork-lift - Google Patents
Throttle slow descending cylinder of hand operated hydraulic fork-lift Download PDFInfo
- Publication number
- CN104817043B CN104817043B CN201510164622.2A CN201510164622A CN104817043B CN 104817043 B CN104817043 B CN 104817043B CN 201510164622 A CN201510164622 A CN 201510164622A CN 104817043 B CN104817043 B CN 104817043B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- ratchet
- throttling
- throttle
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Actuator (AREA)
Abstract
The invention discloses a throttle slow descending cylinder of a hand operated hydraulic fork-lift. The throttle slow descending cylinder comprises a hydraulic cylinder consisting of an outer cylinder and an inner cylinder, and a throttle component, wherein the outer cylinder and the inner cylinder are in cup joint for relatively moving; the top end of a piston rod of the throttle component is connected with a spherical top head, and the bottom end is connected with a hole piston; and a one-way valve plate is arranged below the piston. A thread, an axial hole and a transverse hole are arranged on the piston; the axial hole is intersected with the transverse hole; a throttle thread pipe is in fit connection in the axial hole; a flow adjusting plate is inserted in the transverse hole, and is clamped and fixed through an adjusting bolt; a floating ball is arranged between the throttle thread pipe and the flow adjusting plate; the throttle thread pipe penetrates through the bottom ends of the piston and the one-way valve plate to be in fit connection with a fastening screw cap; the fastening screw cap is ejected on the bottom end surface of the piston; and a valve plate spring is arranged between the fastening screw cap and the one-way valve plate. A two-stage ratchet is arranged on the hydraulic cylinder. The throttle slow descending cylinder voluntarily adjusts the flow of the hydraulic cylinder according to the goods weight to prevent excessive goods descending speed, and can be reliably locked for a long time.
Description
Technical field
The present invention relates to a kind of fork truck drops cylinder and in particular to a kind of throttling of hand operated transport is slow.
Background technology
Its structure of existing hand operated transport mainly include handle, support base, the hydraulic cylinder being arranged on support base and with
The vehicle frame that hydraulic cylinder upper end connects, this hand operated transport to realize raising and the decline of goods by hydraulic cylinder, and by manpower
Pulling completes transport operation, it belong to palletized transport instrument in the easiest, modal handling instrument, be widely used in logistics,
Warehouse, factory, airport etc..Hydraulic cylinder is the important component part of fork truck, and the raising of forklift frame needs Driven by Hydraulic Cylinder to complete.
When goods declines, the weight of pallet fork and goods makes vehicle frame automatic fall-back to bottom.During use, it is in not by joystick
Raising, neutral and decline to adjust car body for the same gear.Goods in view of lifting carrying is typically heavier, for improving handling effect
Rate, hand operated transport lifting velocity should increase, but fully loaded decrease speed also accordingly increases, and decrease speed is excessive to be would be possible to
Jeopardize personal safety and equipment safety.If arranging governor valve in the hydraulic system of hand operated transport, no matter goods weight size,
Goods falling speed substantially constant under speed limit valve regulation, but cannot be carried out in the course of the work adjusting in real time, nor long
Goods is locked at a certain position by the time；Realize goods according to check valve and be reliably locked at a certain position for a long time, but will
Ask hydraulic cylinder to have oil-feed and fuel-displaced two oil circuits, and the falling speed of goods cannot be adjusted.Therefore hand operated transport should
For goods own wt voluntarily adjust while decrease speed can on a certain position secure ratcs.
Content of the invention
Present invention solves the technical problem that being, provide a kind of hand operated transport throttling slow fall cylinder, can be according to pallet fork
The size of load-carrying voluntarily adjusts hydraulic cylinder flow, so that this flow is changed with the change of fork truck weight, thus effectively preventing goods
Decrease speed is too fast.
The present invention solves above-mentioned technical problem and employs the following technical solutions to realize: a kind of hand operated transport throttling is slow to drop
Cylinder, including the hydraulic cylinder being made up of outer shell and inner casing, orifice union, the outer cylinder body top of wherein outer shell is provided with end cap；Inner casing
Inner cylinder body top is provided with capping, and bottom is provided with cylinder bottom；Outer cylinder body can relative movement with inner cylinder body socket；The piston rod of orifice union
Top passes through described outer cylinder end cap connected ball shape top, and bottom connects hole piston, arranges check valve sheet under piston；Inner casing, section
Two confined spaces that stream assembly is formed with piston as border are rod chamber and rodless cavity.Close on the piston of described orifice union
Bottom is provided with screw thread and has axial hole and transverse holes, and this axial hole is intersected with transverse holes；It is connected in described axial hole
Throttling fiber tube, is installed with flow control board in transverse holes, this flow control board is fixedly clamped by regulating bolt, and throttle fiber tube and stream
It is provided with ball float between amount adjustable plate；Described throttling fiber tube passes through the bottom of piston and check valve sheet to be connected tightening silk cap, tightly
Fixed thread crown tight piston bottom end face, arranges valve block spring between tightening silk cap and check valve sheet.
The hand operated transport throttling slow fall cylinder of the present invention, passes through hole piston and check valve sheet when hydraulic cylinder declines,
Voluntarily adjusting liquid medium in rodless cavity and reached by throttling fiber tube and flow control board according to hydraulic forklift load-carrying weight has bar
The flow in chamber, thus voluntarily adjust load-carrying decrease speed.
Described hydraulic cylinder is provided with two grades of ratchets, and outer cylinder body is provided with ratchet base, and ratchet connecting rod is connected to spine by rotating shaft
On toothholder, ratchet head is connected on ratchet connecting rod by rotating shaft, and ratchet connecting rod and ratchet head are equipped with back-moving spring, described interior
Cylinder body is provided with the ratchet bar with the cooperation of ratchet head.
Above-mentioned setting, enables hydraulic cylinder reliably goods to be locked on a certain position for a long time.
The hydraulic medium in confined space that described inner casing is formed with orifice union is the water containing additive component.
Above-mentioned setting, makes the present invention throttle and delays fall cylinder energy-conserving and environment-protective.
Described inner casing capping is provided with inlet opening.
Above-mentioned setting, makes present hydraulic cylinder have an inlet, and is easy to add medium.
Brief description
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Fig. 1 is prior art hand operated transport structural representation.
Fig. 2 is hand operated transport throttling of the present invention slow fall cylinder sectional view.
Fig. 3 is inner casing capping top view in Fig. 2.
1. knob, 2. handle, 3. vehicle frame, 4. lifter plate, 5. pallet fork 6. fork wheel 7. link assembly 8. support base in Fig. 1
9. hydraulic cylinder.
In Fig. 2,10. Spherical plug, 11. end cap 12. capping, 13. outer cylinder body, 14. inner cylinder body 15. piston rod 16. flows
Amount adjustable plate 17. bolt, 18. ball float 19. throttling fiber tube 20. valve block spring 21. tightening silk cap, 22. cylinder bottoms 23. are unidirectional
Valve block 24. piston, 25. ratchet head, 26. ratchet connecting rod, 27. back-moving spring, 28. back-moving spring, 29. ratchet base 30. ratchet
Bar 31. sealing ring 32. sealing ring a. rod chamber b. rodless cavity.
33. inlet opening in Fig. 3.
Specific embodiment
For a better understanding of the present invention with respect to the improvement done by prior art, in the specific embodiment party to the present invention
Before formula is described in detail, the prior art hand operated transport structure first background section being previously mentioned combines accompanying drawing and adds
With explanation.Fig. 1 shows the concrete structure of hand operated transport in prior art, including handle 2, support base 8, is arranged on support
Hydraulic cylinder 9 on seat 8 and the vehicle frame 3 being connected with hydraulic cylinder 9, this hand operated transport to realize goods by hydraulic cylinder 9
Rise and decline, and transport operation is completed by manpower pulling.Knob 1 on handle 2 can control cargo lifting, neutral gear and decline,
It is that on a certain raising position, long-time balance is locked to complete to carry by goods under neutral state.During raising, knob 1 is in raising
On shelves, constantly pressing handle 2, make hydraulic cylinder 9 drive the lifter plate 4 on jack-up vehicle frame 3, due to support base 8 with link assembly 7 even
Connect, this link assembly 7 is connected with the fork wheel 6 at pallet fork 5, by raising, the goods on pallet fork 5 also rises therefore whole vehicle frame 3 therewith
Rise；During decline, in lower downshift, under its Gravitative Loads, hydraulic cylinder 9 declines knob 1 for goods and pallet fork 5, goods and pallet fork 5
It is down to low level.
For above-mentioned prior art hand operated transport, hydraulic cylinder 9 is its key components, if hand operated transport
Hydraulic system in arrange governor valve, goods falling speed is basically unchanged under speed limit valve regulation, but in the course of the work cannot
Adjusted in real time, nor for a long time goods is locked at a certain position；Realize goods according to check valve for a long time may be used
It is locked at a certain position by ground, but requires hydraulic cylinder to have oil-feed and fuel-displaced two oil circuits, and the lower terminal-velocity of goods cannot be adjusted
Degree.
Embodiments of the present invention are aiming at done by hydraulic cylinder real-time regulation decrease speed problem of the prior art
Improvement.Below this specific embodiment is explained in detail.For sake of convenience, hereinafter alleged " top ", " bottom
End ", " on ", the top of D score and accompanying drawing itself, bottom, upper and lower is to consistent, but the structure of the present invention is not risen with restriction and makees
With.Additionally, hereinafter mentioned " two grades of ratchets " refers to comprise the component of two ratchet structures.
As shown in Figure 2 and Figure 3, the hand operated transport throttling slow fall cylinder of the present invention, including the liquid being made up of outer shell and inner casing
Outer cylinder body 13 top of cylinder pressure, orifice union, wherein outer shell is provided with end cap 11；Inner cylinder body 14 top of inner casing is provided with capping 12,
Bottom is provided with cylinder bottom 22；Outer cylinder body 13 can relative movement with inner cylinder body 14 socket；Piston rod 15 top of orifice union passes through institute
State outer cylinder end cap 11 and connect Spherical plug 10, bottom connects hole piston 24,24 times setting check valve sheet 23 of piston；Inner casing, section
Two confined spaces that stream assembly is formed with piston 24 as border are rod chamber a and rodless cavity b.Lean on the piston 24 of orifice union
Nearly bottom is provided with screw thread and has axial hole and transverse holes, and this axial hole is intersected with transverse holes；Be connected in axial hole section
Stream fiber tube 19, is installed with flow control board 16, this flow control board 16 is fixedly clamped by regulating bolt 17 in transverse holes, throttle silk
It is provided with ball float 18 between pipe 19 and flow control board 16；Throttling fiber tube 19 passes through piston 24 and the bottom cooperation of check valve sheet 23 to connect
Connect tightening silk cap 21, tightening silk cap 21 holds out against piston 24 bottom face, valve block bullet is set between tightening silk cap 21 and check valve sheet 23
Spring 20.
Hydraulic cylinder is provided with two grades of ratchets, and outer cylinder body 13 is provided with ratchet base 29, and ratchet connecting rod 26 is connected to by rotating shaft
On ratchet base 29, ratchet head 25 is connected on ratchet connecting rod 26 by rotating shaft, and ratchet connecting rod 26 and ratchet head 25 are provided with reset
Spring 28 and 27, described inner cylinder body 14 is provided with the ratchet bar 30 with ratchet head 25 cooperation.
During cargo lifting, the outer action of hand operated transport throttling of the present invention slow fall cylinder cylinder: the cylinder body of hydraulic cylinder outer shell
13 are lifted up with respect to inner casing cylinder body 14 under the effect of other external force, and piston rod 15 top Spherical plug 10 promotes vehicle frame lifter plate
Move upwards, the support base being connected with hydraulic cylinder is turned an angle, the link assembly fortune being connected with support base, pallet fork wheel
Dynamic, pallet fork moves upwards, goods raising therewith；Action in cylinder: piston rod 15 moves upwards with outer cylinder end cap 11, in rod chamber a
Liquid medium applies pressure through piston hole to check valve sheet 23, and this pressure overcomes valve block between check valve sheet 23 and tightening silk cap 21
The elastic force of spring 20, makes check valve sheet 23 produce a determining deviation with piston 24 end face, liquid medium can be quickly in rod chamber a
Flow in rodless cavity b, now the ball float 18 between throttling fiber tube 19 and flow control board 16 will throttle fiber tube 19 bore closure.
During goods declines, the outer action of hand operated transport throttling of the present invention slow fall cylinder cylinder: open two grades of ratchets, make spine
Tooth connecting rod 26 drives ratchet head 25 to depart from ratchet bar 30, and under vehicle frame and goods self gravitation effect, lifter plate promotes spherical
Top 10 moves downward, and outer cylinder end cap 11 and cylinder body 13 move downward, and meanwhile link assembly adverse movement is attached thereto
Support base rotates backward, and pallet fork moves downward, and goods declines therewith；Action in cylinder: outer cylinder end cap 11 promotes piston rod 15 downward
Motion, piston 24 promotes check valve sheet 23 to produce pressure to liquid medium in rodless cavity b, and this pressure makes check valve sheet 23 closely paste
Close piston 24 bottom face, piston hole is closed by check valve sheet 23, make medium in rodless cavity b enter throttling fiber tube 19, ball float simultaneously
18 move upwards, and throttling fiber tube 19 through hole is opened, and partial piston bar 15 transverse holes at flow control board 16 for the medium flow out, and enter
Enter in rod chamber a, because throttling fiber tube 19 through-hole aperture is less, enter into that flow velocity in rod chamber a is slower, piston rod 15 is downward
The speed of motion is restricted, and motion in cylinder has influence on motion outside cylinder, and pallet fork and goods decrease speed also accordingly slow down.
When goods persists a certain height, if during cargo lifting locking it on a certain position, only need to cancel and carrying
Rise other external force of outer shell cylinder body 13, on outer shell, the ratchet head 25 of two grades of ratchet structures is engaged with ratchet bar on inner casing 30, outward
Cylinder is locked relative to inner casing, and goods can reliably rest on a certain position for a long time；If by it a certain during goods decline
Lock on position, only need to control two grades of ratchets, make ratchet connecting rod 26 and ratchet head 25 in the presence of its back-moving spring 28 and 27,
Ratchet head 25 is engaged with ratchet bar 30, and outer shell is locked relative to inner casing, and goods can reliably rest on a certain position for a long time.
It is rod chamber a that hand operated transport throttling of the present invention is delayed in the confined space that fall cylinder inner casing is formed with orifice union
And/or the hydraulic medium of rodless cavity b is the water containing additive component, more energy-conserving and environment-protective.Inner casing capping 12 is provided with feed liquor
Hole 33, medium is in cylinder interior circulation.For reducing the loss of liquid medium, it is provided between present hydraulic cylinder piston rod 15 and capping 12
Sealing ring 32, is provided with sealing ring 31 between capping 12 bottom faces and inner casing cylinder body 14 inwall.The present invention is to piston 24 and inner casing cylinder
It is that gap value size requirements are relatively low that the inwall of body 14 fits tightly degree, and fitting tightly degree to piston 24 and check valve sheet 23 will
Ask relatively low, accuracy of manufacture requirement therefore of the present invention is relatively low, is easy to processing and manufacturing, reduces processing cost simultaneously.The stream of the present invention
Amount adjustable plate 16 can be adjusted through bolt 17, can pre-adjustment flow control board 16 and throttling fiber tube 19 top for specifically used demand
Distance values.
Finally illustrate that the hand operated transport throttling slow fall cylinder that above example refers to is not limited to this case institute
Diagram is provided.It will be understood by those within the art that, technical scheme can be modified or equivalent
Replacement, the objective without deviating from technical solution of the present invention and scope, it all should be covered in the middle of scope of the presently claimed invention.
Claims (4)
1. a kind of hand operated transport throttling slow fall cylinder, including the hydraulic cylinder being made up of outer shell and inner casing, orifice union, its China and foreign countries
The outer cylinder body top of cylinder is provided with end cap；The inner cylinder body top of inner casing is provided with capping, and bottom is provided with cylinder bottom；Outer cylinder body and inner cylinder body set
Connecing can relative movement；The piston rod top of orifice union passes through described outer cylinder end cap connected ball shape top, and bottom connects work with holes
Plug, arranges check valve sheet under piston；Two confined spaces that inner casing, orifice union form with piston as border are rod chamber and nothing
Rod cavity it is characterised in that: be provided with screw thread and have axial hole and transverse holes near bottom on the piston of described orifice union, should
Axial hole is intersected with transverse holes；
Be connected in described axial hole throttling fiber tube, is installed with flow control board in transverse holes, and this flow control board passes through to adjust
Bolt is fixedly clamped, and is provided with ball float between throttling fiber tube and flow control board；
Described throttling fiber tube passes through the bottom of piston and check valve sheet to be connected tightening silk cap, the tight piston bottom of tightening silk crown
End face, arranges valve block spring between tightening silk cap and check valve sheet.
2. hand operated transport according to claim 1 throttling slow fall cylinder it is characterised in that: described hydraulic cylinder is provided with two
Level ratchet, outer cylinder body is provided with ratchet base, and ratchet connecting rod is connected on ratchet base by rotating shaft, and ratchet head is connected to by rotating shaft
On ratchet connecting rod, ratchet connecting rod and ratchet head are equipped with back-moving spring, described inner cylinder body is provided with the spine with the cooperation of ratchet head
Tooth bar.
3. hand operated transport according to claim 1 throttling slow fall cylinder it is characterised in that: described inner casing and orifice union
The hydraulic medium in confined space being formed is the water containing additive component.
4. hand operated transport according to claim 1 throttling slow fall cylinder it is characterised in that: described inner casing capping is provided with
Inlet opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164622.2A CN104817043B (en) | 2015-04-09 | 2015-04-09 | Throttle slow descending cylinder of hand operated hydraulic fork-lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164622.2A CN104817043B (en) | 2015-04-09 | 2015-04-09 | Throttle slow descending cylinder of hand operated hydraulic fork-lift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104817043A CN104817043A (en) | 2015-08-05 |
| CN104817043B true CN104817043B (en) | 2017-01-25 |
Family
ID=53727556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510164622.2A Expired - Fee Related CN104817043B (en) | 2015-04-09 | 2015-04-09 | Throttle slow descending cylinder of hand operated hydraulic fork-lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104817043B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879387A (en) * | 2021-01-06 | 2021-06-01 | 武芳 | Hydraulic cylinder |
| CN112762048A (en) * | 2021-01-06 | 2021-05-07 | 武芳 | Oil cylinder of sanitation garbage truck |
| CN114562496B (en) * | 2022-01-29 | 2022-11-29 | 江苏永祥液压设备有限公司 | Hydraulic oil cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO171447B (en) * | 1988-10-14 | 1992-12-07 | Samhall Lavi | ADJUSTING DEVICE FOR A OUTLET VALVE IN A FORK LIFT |
| CN101143691A (en) * | 2007-10-15 | 2008-03-19 | 严文奇 | Manual hydraulic tray transport cart |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN202579453U (en) * | 2012-03-08 | 2012-12-05 | 柳州双吉机械有限公司 | Buffer device for hydraulic oil cylinder |
| CN103359660A (en) * | 2012-03-26 | 2013-10-23 | 株式会社伊丹精机 | Lifting hydraulic cylinder and forklift having the same |
-
2015
- 2015-04-09 CN CN201510164622.2A patent/CN104817043B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO171447B (en) * | 1988-10-14 | 1992-12-07 | Samhall Lavi | ADJUSTING DEVICE FOR A OUTLET VALVE IN A FORK LIFT |
| CN101143691A (en) * | 2007-10-15 | 2008-03-19 | 严文奇 | Manual hydraulic tray transport cart |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN202579453U (en) * | 2012-03-08 | 2012-12-05 | 柳州双吉机械有限公司 | Buffer device for hydraulic oil cylinder |
| CN103359660A (en) * | 2012-03-26 | 2013-10-23 | 株式会社伊丹精机 | Lifting hydraulic cylinder and forklift having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104817043A (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104817043B (en) | Throttle slow descending cylinder of hand operated hydraulic fork-lift | |
| US20080048159A1 (en) | Double-speed hydraulic bottle jack | |
| EP2116739A2 (en) | Methods and apparatus for position sensitive suspension dampening | |
| CN105952705B (en) | Balanced valve | |
| CN104879334B (en) | Piston elevating mechanism and its hydraulic control device | |
| CN102259809A (en) | Control system and control method of forklift door frame | |
| CN100441885C (en) | Hydraulic balance valve capable of automatically adapting load change | |
| CN103527697A (en) | Hydro-pneumatic spring suspension cylinder | |
| CN105971956B (en) | A kind of pilot-actuated valve | |
| US8641022B2 (en) | Front fork | |
| CN106050775B (en) | Structure improved pilot-actuated valve | |
| CN104653539B (en) | A kind of proportional hydraulic balanced valve | |
| CN106394159A (en) | Vehicle suspension frame and vehicle | |
| CN204164067U (en) | A kind of equilibrium valve | |
| CN106438549B (en) | A kind of direct-acting overflow valve | |
| CN203296995U (en) | Safe overflow valve device capable of controlling pressure and flux rate | |
| DE19546492A1 (en) | Tilt compensation for vehicles | |
| CN202348821U (en) | Variable damping oil gas suspension cylinder with switch control | |
| JP2010242803A (en) | Hydraulic cylinder | |
| CN207061789U (en) | The high fork truck of heap provided with door frame governor motion and fork mechanism aligning gear | |
| CN206417812U (en) | composite oil cylinder jack | |
| CN206886622U (en) | Fork truck lifting oil cylinder with New Buffering structure | |
| CN105782525A (en) | Pressure relief valve for platform car | |
| AU2017382926B2 (en) | A damper for absorbing shock generated upon docking a moving structure with a stationary structure or foundation | |
| KR20160141240A (en) | The hydraulic device for front loader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20200409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |