CN205715031U - A kind of multiple directional control valve of band mechanical release device - Google Patents
A kind of multiple directional control valve of band mechanical release device Download PDFInfo
- Publication number
- CN205715031U CN205715031U CN201620583237.1U CN201620583237U CN205715031U CN 205715031 U CN205715031 U CN 205715031U CN 201620583237 U CN201620583237 U CN 201620583237U CN 205715031 U CN205715031 U CN 205715031U
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- hydraulic
- valve rod
- valve
- load end
- oil
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Abstract
This utility model provides the multiple directional control valve of a kind of band mechanical release device, and it is applicable to the hydraulic lifting apparatus of tractor.Common hydraulic control one-way valve there will be hydraulic means and manipulates insensitive phenomenon.The oil pocket that this utility model is connected with load end in proportional multi-way valve arranges hydraulic lock push rod and lock core, proportional multi-way valve achieves the supercharging of load end, decompression and auto-lock function.By several sections that the commutation valve rod of proportional multi-way valve is designed to that diameter is different, regulate the pressure of proportional multi-way valve load end oil pocket and realize multiple load end attached in series, this utility model is reasonable in design, has the advantages such as easy to use, self-locking unblock manual dexterity.
Description
Technical field
This utility model relates to the multiple directional control valve of a kind of band mechanical release device, and it is applicable to the hydraulic pressure lift of tractor
Device.
Background technology
In the Hydraulic Power Transmission System device of tractor, commonly used hydraulic control one-way valve is that hydraulic pressure is unblanked in the market, though
Possess some special knowledge in the right problem stuck at " hydraulic plunger ", but due to particularity when tractor works, fierceness jolted, continue
Operation spirit during the job stability of the extreme environment hydraulic controls such as high temperature and multiple actuator centralized Control
Quick property requires at a relatively high.In actual use, the tractor of hydraulic control tripper is used often to there will be hydraulic means behaviour
Controlling insensitive, actuator is from degradation wild effect, and this utility model solves that common hydraulic control one-way valve is unvanquishable asks
Topic.
Summary of the invention
For the deficiencies in the prior art, this utility model provides a kind of spool displacement to control the multichannel that hydraulic lock is unblanked
Reversal valve.
For achieving the above object, the technical scheme that this utility model employing is following:
The multiple directional control valve of a kind of band mechanical release device, it includes oil-feed valve body, commutation valve body, commutation valve rod, oil return
Valve body, overload protection valve, hydraulic lock push rod, lock core, spring；
Being provided with lock core, hydraulic lock push rod in the oil pocket being connected with load end, commutation valve rod is designed to several sections that diameter is different；
The location status of commutation valve rod divides middle position, moves to left and move to right three kinds, causes the change of pressure oil circuit simultaneously；
When the valve rod that commutates is in middle position, the middle position being directly over commutating between valve rod and valve body from the fluid of oil pump offer leads to
Road flows to fuel tank, and now hydraulic lock push rod is in free state so that lock core is spring, the pushing away of pressure oil in the chamber at lock core place
Under Dong, lock core blocks up rapidly tight oil pocket so that the pressure of load end is constant；
When the valve rod that commutates moves right, the middle bit port between commutation valve rod and valve body is gradually blocked, and hydraulic oil
Load end oil pocket can be locked into through check valve, hydraulic pressure；When commutate valve rod return to middle position time, hydraulic lock will self-locking, prevent load
End oil pocket declines；
When the valve rod that commutates is moved to the left, hydraulic lock push rod is up backed down hydraulic lock spool, and makes work by commutation valve rod
Hydraulic fluid port release.
This utility model uses the design of this structure of hydraulic lock, energy Non-follow control unlocking function, and provides splendid flow
Characteristic and low hydraulic power.This utility model all can realize unidirectional lifting self-locking property at the oil circuit of modules, and can be big
The big stability improving actuator and safety.
The advantages such as this utility model has reasonable in design, easy to use, manual dexterity.
Accompanying drawing explanation
Fig. 1 is this utility model front sectional view；
Fig. 2 be in Fig. 1 B-B to sectional view.
In accompanying drawing, 1. commutation valve body, 2. hydraulic lock push rod, 3.O RunddichtringO, 4. lock core, 5. check valve, 6. machinery are determined
Position gland, 7. commutation valve rod, 8. overload protection valve, A are load end.
Detailed description of the invention
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is further described.
As shown in Figure 1 and Figure 2, this utility model is used in the hydraulic lifting apparatus of tractor, by load end A with drag
The hydraulic lifting apparatus of machine drawing or the connection of other drive system, because commutation valve rod 7 is designed to several sections that diameter is different, different-diameter
Section coordinate with oil circuit, form different oil circuit.The location status of commutation valve rod 7 divides middle position, moves to left and move to right three kinds, causes simultaneously
The change of pressure oil circuit.
When the valve rod 7 that commutates is in middle position, the fluid provided from oil pump is directly over the middle position between valve rod 7 and valve body of commutating
Passage flows to fuel tank, and now hydraulic lock push rod 2 is in free state so that lock core 4 is at spring, the pressure in the chamber at lock core 4 place
Under the promotion of oil, lock core 4 blocks up rapidly tight oil pocket so that the pressure of load end A is constant.
When the valve rod 7 that commutates moves right, the middle bit port between commutation valve rod 7 and valve body is gradually blocked, and high pressure
Oil can be locked into load end A oil pocket through check valve 5, hydraulic pressure.When commutate valve rod 7 return to middle position time, hydraulic lock will self-locking, prevent
Load end A oil pocket declines.
When the valve rod 7 that commutates is moved to the left, hydraulic lock push rod 2 is up backed down lock core 4, and makes working oil by commutation valve rod 7
Mouth release, it is achieved thereby that the self-locking of load end A, it is ensured that the stability of actuator.
This utility model can have multiple load end A to be used in series, by hydraulic lock push rod 2 and the position of commutation valve rod 7
Regulation realizes supercharging, decompression and the auto-lock function of each load end A, improves the susceptiveness of banked direction control valves self-locking and unblock with reliable
Property.
Claims (1)
1. a multiple directional control valve for band mechanical release device, it includes oil-feed valve body, commutation valve body, commutation valve rod, oil return valve
Body, overload protection valve, hydraulic lock push rod, lock core, spring；
It is characterized in that being provided with lock core, hydraulic lock push rod in the oil pocket being connected with load end, it is different that commutation valve rod is designed to diameter
Several sections；The location status of commutation valve rod divides middle position, moves to left and move to right three kinds, causes the change of pressure oil circuit simultaneously；
When the valve rod that commutates is in middle position, the fluid provided from oil pump is directly over the middle bit port stream between valve rod and valve body that commutates
To fuel tank, now hydraulic lock push rod is in free state so that lock core is in spring, the promotion of the pressure oil in the chamber at lock core place
Under, lock core blocks up rapidly tight oil pocket so that the pressure of load end is constant；
When the valve rod that commutates moves right, the middle bit port between commutation valve rod and valve body is gradually blocked, and hydraulic oil can be through
Cross check valve, hydraulic pressure is locked into load end oil pocket；When commutate valve rod return to middle position time, hydraulic lock will self-locking, prevent load end oil
Chamber declines；
When the valve rod that commutates is moved to the left, hydraulic lock push rod is up backed down hydraulic lock spool, and makes actuator port by commutation valve rod
Release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583237.1U CN205715031U (en) | 2016-06-16 | 2016-06-16 | A kind of multiple directional control valve of band mechanical release device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620583237.1U CN205715031U (en) | 2016-06-16 | 2016-06-16 | A kind of multiple directional control valve of band mechanical release device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715031U true CN205715031U (en) | 2016-11-23 |
Family
ID=57306420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620583237.1U Active CN205715031U (en) | 2016-06-16 | 2016-06-16 | A kind of multiple directional control valve of band mechanical release device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715031U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438537A (en) * | 2016-11-25 | 2017-02-22 | 合肥协力液压科技有限公司 | Oil port integration zero-leakage mechanical opening pilot-operated type hydraulic lock device |
| CN107620812A (en) * | 2017-10-30 | 2018-01-23 | 圣邦集团有限公司 | A kind of banked direction control valves with valve rod interlocking positioning function |
| CN114087248A (en) * | 2021-11-02 | 2022-02-25 | 浙江海宏液压科技股份有限公司 | Reversing valve |
-
2016
- 2016-06-16 CN CN201620583237.1U patent/CN205715031U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438537A (en) * | 2016-11-25 | 2017-02-22 | 合肥协力液压科技有限公司 | Oil port integration zero-leakage mechanical opening pilot-operated type hydraulic lock device |
| CN107620812A (en) * | 2017-10-30 | 2018-01-23 | 圣邦集团有限公司 | A kind of banked direction control valves with valve rod interlocking positioning function |
| CN107620812B (en) * | 2017-10-30 | 2024-04-19 | 圣邦集团有限公司 | Multi-way valve with valve rod interlocking positioning function |
| CN114087248A (en) * | 2021-11-02 | 2022-02-25 | 浙江海宏液压科技股份有限公司 | Reversing valve |
| CN114087248B (en) * | 2021-11-02 | 2022-07-26 | 浙江海宏液压科技股份有限公司 | Reversing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |