CN105840573A - Valve body of first link of load-sensitive multi-way valve and first link of load-sensitive multi-way valve - Google Patents
Valve body of first link of load-sensitive multi-way valve and first link of load-sensitive multi-way valve Download PDFInfo
- Publication number
- CN105840573A CN105840573A CN201510024493.7A CN201510024493A CN105840573A CN 105840573 A CN105840573 A CN 105840573A CN 201510024493 A CN201510024493 A CN 201510024493A CN 105840573 A CN105840573 A CN 105840573A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- load
- spring side
- chamber
- 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.)
- Granted
Links
Landscapes
- Safety Valves (AREA)
Abstract
The invention relates to a valve body of a first link of a load-sensitive multi-way valve and the first link of the load-sensitive multi-way valve. The valve body of the first link of the load-sensitive multi-way valve comprises a valve plate body provided with oil inlets, oil return ports, a load feedback port, a primary safety valve hole and a secondary safety valve hole. A primary oil inlet cavity, a primary oil return cavity, a primary spring side cavity and a primary non-spring side cavity are formed between the primary safety valve hole and a primary safety valve rod. A secondary oil inlet cavity, a secondary oil return cavity, a secondary spring side cavity and a secondary non-spring side cavity are formed between the secondary safety valve hole and a secondary safety valve rod. The oil inlets communicate with the primary spring side cavity and the secondary oil inlet cavity. An oil channel provided with a damping or a plug is arranged in the primary safety valve rod. Correspondingly, the load feedback port communicates with the primary spring side cavity and the secondary oil inlet cavity. An oil channel provided with the damping or the plug is arranged in the valve plate body.The valve body of the first link of the load-sensitive multi-way valve and the first link of the load-sensitive multi-way valve have following beneficial effects: only by exchanging positions of the plug and the damping, a load-sensitive system of a metering pump or a load-sensitive system of a variable pump can be adapted; the adaptability of the multi-way valve to a main machine is improved; and the valve can be used for multiple purposes.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of load sensing multi-way valve first valve body
And load sensing multi-way valve first.
Background technology
Load sensitive system is that one experiences system pressure-traffic demand, and only provides required stream
Amount and the hydraulic circuit of pressure.Load sensing multi-way valve is the core parts of construction machinery hydraulic system,
Between pump and executive component, when each executive component works, working flow and spool aperture
Relevant, and unrelated with load pressure.Although load sensing multi-way valve valve body profile is simple at present, but
Its internal galleries is designed with different complicated inner cavity and long narrow abnormity hole slot, and casting technique is the most multiple
Miscellaneous and poor universality, therefore designs rational in infrastructure, compact, highly versatile, the multichannel of dependable performance
Valve body has the biggest practical value in engineering machinery field.
Current load sensing multi-way valve first, its valve body includes controlling oil inlet P, oil return inlet T,
Guide's oil duct, high-pressure oil duct, low pressure oil duct etc., during first work, the pressure of actuator port passes through
Oilhole entering signal oil pocket on corresponding reversal valve valve rod, then draw through shuttle valve, operating oil pressure is i.e. believed
Number oil pressure is delivered to oil-feed connection, then feeds back to load sensitive pump, it is achieved the load-sensitive function of system.
How existing load sensing multi-way valve first, design for single engineering machinery main computer boxes, one
Plant main computer boxes correspondence one load sensing multi-way valve.A kind of demand of main computer boxes function, corresponding
A kind of valve body of load sensing multi-way valve first.Further, the most only there is the function of relief valve, merit
Energy form is single.
Summary of the invention
The purpose of the present invention is to propose to a kind of load sensing multi-way valve first valve body and load-sensitive multichannel
Valve first, it can improve host adaptation, it is achieved multi-purpose valve.
For achieving the above object, the invention provides a kind of load sensing multi-way valve first valve body, its
Including valve block body, described valve block body is provided with oil-in, oil return opening and load feedback mouth,
Described valve block is the most internal is provided with the safe valve opening of main and secondary security valve opening；
Master is at least formed between the safe valve opening of described main and its internal main safety lever arranged
Level oil suction chamber, main oil back chamber, main spring side chamber and main are without spring side chamber；Described main
Oil suction chamber connects without spring side chamber with described oil-in and described main, described main oil back chamber with
Described oil return opening connects；
At least formed secondary between described secondary security valve opening and its internal secondary security valve rod arranged
Level oil suction chamber, secondary oil back chamber, secondary spring side chamber and secondary are without spring side chamber；Described secondary
Oil suction chamber connects without spring side chamber with described secondary, and described secondary oil back chamber is with described oil return opening even
Logical；
Described oil-in is connected with described main spring side chamber and described secondary oil suction chamber by oil duct
Logical；Described load feedback mouth is by oil duct and described main spring side chamber and described secondary oil suction chamber
Connection；
According to different from the pump that described oil-in connects, selectivity is arranged as follows:
At the oil duct that described oil-in connects with described main spring side chamber and described secondary oil suction chamber
On damping is set, in described load feedback mouth and described main spring side chamber and described secondary oil-feed
Arrange stifled on the oil duct of chamber connection；
Or,
At the oil duct that described oil-in connects with described main spring side chamber and described secondary oil suction chamber
On arrange stifled, at described load feedback mouth and described main spring side chamber and described secondary oil suction chamber
On the oil duct of connection, damping is set.
One preferably or in alternative embodiment, described oil-in and described main spring side chamber and institute
State the connection of secondary oil suction chamber and damping be set or stifled oil duct is arranged in described main safety valve bar,
Described load feedback mouth connects with described main spring side chamber and described secondary oil suction chamber and arranges
Stifled or damping oil duct is arranged on described valve block, and this is internal.
Preferably or in alternative embodiment, described valve block body is additionally provided with middle position unloader one
Hole, at least being formed between described middle position off-load valve opening and its internal middle position off-load valve rod, position is unloaded
Lotus oil suction chamber, middle position off-load oil back chamber, middle position unloading spring side chamber and the off-load of middle position are without spring side
Chamber, described middle position off-load oil suction chamber connects without spring side chamber with described oil-in and described middle position off-load
Logical, described middle position off-load oil back chamber connects with described oil return opening, described middle position unloading spring side chamber
Connect with described load feedback mouth.
Preferably or in alternative embodiment, described valve block body is additionally provided with dynamic antivibration valve one
Hole, is at least formed dynamic between described dynamic antivibration valve opening and its internal dynamic antivibration valve rod arranged
State damping oil suction chamber, dynamic antivibration oil back chamber, dynamic antivibration spring side chamber and dynamic antivibration are without bullet
Spring side chamber；Described dynamic antivibration oil suction chamber connects with described oil-in, described dynamic antivibration oil-feed
Damping duct it is provided with described oil-in, in described damping duct and institute on the oil duct that chamber connects
State the other oil duct being connected to connect described dynamic antivibration without spring side chamber on the oil duct of oil-in connection,
On the oil duct that described damping duct connects with described dynamic antivibration oil suction chamber, side is connected to described in connection
The oil duct of dynamic antivibration spring side chamber, described dynamic antivibration oil back chamber connects described oil return opening.
Preferably or in alternative embodiment, described valve block body also sets up LS pressure tap one,
Described LS pressure tap connects described load feedback mouth.
Preferably or in alternative embodiment, described valve block body is additionally provided with oil-feed pressure tap one,
Described oil-feed pressure tap connects described oil-in.
One preferably or in alternative embodiment, described load feedback mouth, described LS pressure tap and
Described oil-feed pressure tap is arranged in the same side of described valve block body.
One preferably or in alternative embodiment, the safe valve opening of described main and described middle position unloader
Whole described valve block body is run through in hole, and the safe valve opening of described main and described middle position off-load valve opening
The end passing described valve block body is positioned at the same side of described valve block body.
One, preferably or in alternative embodiment, described oil-in is two, two described oil-ins
Connection, runs through whole described valve block body, and described oil return opening is two, two described oil return openings
Connection, runs through whole described valve block body.
Preferably or in alternative embodiment one, valve rod is set in one of them described oil return opening and is formed
Check valve.
One, preferably or in alternative embodiment, described oil-in and described oil return opening use flange even
Connect oil pipe.
For achieving the above object, present invention also offers a kind of load sensing multi-way valve first, its bag
Include the load sensing multi-way valve first valve body in any of the above-described embodiment.
One preferably or in alternative embodiment, the main in described load sensing multi-way valve first valve body
Safe valve opening forms main relief valve with its internal main safety lever arranged, and described load is quick
Secondary security valve opening in sense banked direction control valves first valve body and its internal secondary security valve rod shape arranged
Become secondary security valve.
One preferably or in alternative embodiment, the middle position in described load sensing multi-way valve first valve body
Off-load valve opening forms middle position unloader with the middle position unloader bar of its inside.
One preferably or in alternative embodiment, dynamic in described load sensing multi-way valve first valve body
Damping valve opening forms dynamic antivibration valve with its internal dynamic antivibration valve rod arranged, and described load is quick
It is provided with damping in damping duct in sense banked direction control valves first valve body.
Based on technique scheme, the present invention at least has the advantages that
The load sensing multi-way valve first valve body that the present invention provides, uses the design of load-sensitive module,
Make load sensing multi-way valve only need to exchange stifled and damping position and just can be suitable for dosing pump load-sensitive
System or variable pump load sensitive system, strengthen the host adaptation of banked direction control valves, it is achieved multi-purpose valve.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application's
A part, the schematic description and description of the present invention is used for explaining the present invention, and it is right to be not intended that
The improper restriction of the present invention.In the accompanying drawings:
The schematic front view of the load sensing multi-way valve first valve body that Fig. 1 provides for the present invention；
The left view schematic diagram of the load sensing multi-way valve first valve body that Fig. 2 provides for the present invention；
The schematic top plan view of the load sensing multi-way valve first valve body that Fig. 3 provides for the present invention；
The cross-sectional schematic of the load sensing multi-way valve first valve body that Fig. 4 provides for the present invention；
Cuing open of the load-sensitive module of the load sensing multi-way valve first valve body that Fig. 5 provides for the present invention
Depending on schematic diagram；
The office of the load-sensitive module of the load sensing multi-way valve first valve body that Fig. 6 provides for the present invention
Portion's cross-sectional schematic.
Label in accompanying drawing:
The safe valve opening of 1-main；2-secondary security valve opening；Off-load valve opening in position in 3-；4-dynamic antivibration valve
Hole；5-oil-in；6-oil return opening；7-load feedback mouth；8-LS pressure tap；9-oil-feed pressure tap；
10-damps；11-blocks up；
21-the first oil duct；22-the second oil duct；23-the 3rd oil duct；24-the 4th oil duct；25-the 5th oil
Road；26-the 6th oil duct；27-the 7th oil duct；28-the 8th oil duct；29-the 9th oil duct.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is carried out clearly
Chu, it is fully described by.Obviously, described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
As Figure 1-3, load sensing multi-way valve first valve body schematic provided for the present invention
Embodiment, in this illustrative examples, load sensing multi-way valve first valve body includes valve block body,
At least provided with oil-in 5, oil return opening 6 and load feedback mouth 7, valve block body on valve block body
Interior at least provided with the safe valve opening of main 1 and secondary security valve opening 2.
As it is shown in figure 5, between the safe valve opening of main 1 and its internal main safety lever arranged
At least form main oil suction chamber, main oil back chamber, main spring side chamber and main without spring side chamber；
Main oil suction chamber connects without spring side chamber with oil-in 5 and main, main oil back chamber and oil return opening
6 connections.
Secondary is at least formed between secondary security valve opening 2 and its internal secondary security valve rod arranged
Oil suction chamber, secondary oil back chamber, secondary spring side chamber and secondary are without spring side chamber；Secondary oil suction chamber
Connecting without spring side chamber with secondary, secondary oil back chamber connects with oil return opening 6.
Oil-in 5 is connected with main spring side chamber and secondary oil suction chamber by oil duct；Load feedback
Mouth 7 is connected with main spring side chamber and secondary oil suction chamber by oil duct.
According to different from the pump that oil-in 5 connects, selectivity is arranged as follows:
The oil duct that oil-in 5 connects with main spring side chamber and secondary oil suction chamber arranges damping
10, the oil duct that load feedback mouth 7 connects with main spring side chamber and secondary oil suction chamber is arranged
Stifled 11；Make load feedback loop when oil channel enters main spring side chamber and secondary oil suction chamber,
Being blocked at stifled 11, oil-in 5 flows through damping 10 and the safe valve opening of main 1, is blocked
At secondary security valve opening 2, it is adaptable to variable pump load sensitive system；
Or,
The oil duct that oil-in 5 connects with main spring side chamber and secondary oil suction chamber is arranged stifled
11, the oil duct that load feedback mouth 7 connects with main spring side chamber and secondary oil suction chamber is arranged
Damping 10；Load feedback loop is made to enter the safe valve opening of main 1 and secondary peace through overdamp 10
Full valve opening 2, is blocked at stifled 11, it is adaptable to dosing pump load sensitive system.
The load sensing multi-way valve first valve body that the present invention provides, only need to exchange stifled 11 and damp 10
Position just can be suitable for dosing pump load sensitive system or variable pump load sensitive system, enhance
The host adaptation of banked direction control valves, it is achieved multi-purpose valve.
As it is shown in figure 5, oil-in 5 connects with main spring side chamber and secondary oil suction chamber and sets
Put damping 10 or stifled 11 oil duct can be arranged in main safety valve bar；Load feedback mouth 7 with
Main spring side chamber connect with secondary oil suction chamber and arranges stifled 11 or damp 10 oil duct permissible
This is internal to be arranged on valve block.
As shown in Figure 4, valve block body being also provided with middle position off-load valve opening 3, middle position is unloaded
Position off-load oil-feed at least can being formed between lotus valve opening 3 and its internal middle position off-load valve rod
Chamber, middle position off-load oil back chamber, middle position unloading spring side chamber and the off-load of middle position without spring side chamber, in
Position off-load oil suction chamber connects without spring side chamber with oil-in 5 and the off-load of middle position, the off-load oil return of middle position
Chamber connects with oil return opening 6, and middle position unloading spring side chamber connects with load feedback mouth 7.
As it is shown in figure 1, be also provided with dynamic antivibration valve opening 4 on valve block body, dynamically hinder
At least can form dynamic antivibration between Buddhist nun's valve opening 4 and its internal dynamic antivibration valve rod arranged to enter
Oil pocket, dynamic antivibration oil back chamber, dynamic antivibration spring side chamber and dynamic antivibration are without spring side chamber；
Dynamic antivibration oil suction chamber connects with oil-in 5, and dynamic antivibration oil suction chamber connects with oil-in 5
Being provided with damping duct on oil duct, on the oil duct that damping duct connects with oil-in 5, side is connected to
Connection dynamic antivibration, without the oil duct of spring side chamber, connects with dynamic antivibration oil suction chamber in damping duct
Oil duct on the other oil duct being connected to connect dynamic antivibration spring side chamber, dynamic antivibration oil back chamber connects
Oil return opening 6.
As it is shown in figure 1, can also arrange LS on valve block body, (Load Sensing loads quick
Sense) pressure tap 8 and oil-feed pressure tap 9, LS pressure tap 8 connects load feedback mouth 7, oil-feed
Pressure tap 9 connects oil-in 5.Load feedback mouth 7, LS pressure tap 8 and oil-feed pressure tap 9
It is arranged in the same side of valve block body, pressure signal collection point and maintenace point centralized arrangement, convenient
The collection of the data such as oil pipe and pressure is installed.
As shown in Figure 4, the safe valve opening of main 1 and middle position off-load valve opening 3 can run through whole valve
Sheet body, is connected oil-in 5 with oil return opening 6.The safe valve opening of main 1 and middle position unloader
The two ends in hole 3 all can pass valve block body, one of them end of the safe valve opening of main 1 and
One of them end of middle position off-load valve opening 3 all may be located at the side of valve block body, and main is pacified
Complete another end of valve opening 1 and another end of middle position off-load valve opening 3 all may be located at valve
The opposite side of sheet body.
As in figure 2 it is shown, due to the safe valve opening of main 1, middle position off-load valve opening 3 and secondary security
Valve opening 2, needs regulation, and secondary security valve opening 2 passes the end of valve block body and can also be positioned at
The valve block body side at the place, wherein one end of the safe valve opening of main 1 and middle position off-load valve opening 3,
Convenient regulation.
As shown in Figure 4, Figure 5, oil-in 5 can arrange two, and two oil-ins 5 connect,
Running through whole valve block body, oil return opening 6 can arrange two, and two oil return openings 6 connect, and pass through
Wear whole valve block body.In one of them oil return opening 6, valve rod can be set and form check valve.Pressure
Power oil can select any one from two oil-ins 5 or two oil-feeds simultaneously, returns from two
Any one in hydraulic fluid port 6 or two oil returns simultaneously.
In above-mentioned illustrative examples, two oil-ins 5 can be arranged up and down, two oil return openings 6
Can also arrange up and down so that pipeline is installed more convenient, selects more.
In above-mentioned illustrative examples, oil-in 5 and oil return opening 6 all can use Flange joint
Oil pipe.Use Flange joint installation form, there is installation caliber big, pressure height, it is difficult to water clock etc.
Advantage.
As shown in Figure 6, the load-sensitive multichannel first valve body installation load provided for the present invention is sensitive
The cross-sectional schematic of one specific embodiment of module, in this specific embodiment, valve block is the most internal can
To be provided with first oil duct the 21, second oil duct the 22, the 3rd oil duct the 23, the 4th oil duct the 24, the 5th
Oil duct the 25, the 6th oil duct the 26, the 7th oil duct the 27, the 8th oil duct 28 and the 9th oil duct 29.
Wherein, the 9th oil duct 29 connects load feedback mouth 7 and the 8th oil duct 28, the 8th oil duct 28
Connecting the 7th oil duct 27, the 7th oil duct 27 connects the 4th oil duct 24, and the 4th oil duct 24 connects the 6th
Oil duct 26 and the 3rd oil duct 23, the 6th oil duct 26 connects the 5th oil duct 25, and the 5th oil duct 25 is also
The connection safe valve opening of main 1, the 3rd oil duct 23 can connect the second oil by the first oil duct 21
Road 22, the second oil duct 22 connects oil return opening 6, sets between the 3rd oil duct 23 and the first oil duct 21
Put secondary security valve opening 2, after secondary security valve rod is set in secondary security valve opening 2, pass through
Secondary security valve rod is promoted to be capable of the 3rd oil duct 23 and the connection of the first oil duct 21 or blocking-up.
When installing damping 10 in the internal galleries of the main safety valve bar in the safe valve opening of main 1,
When installing stifled 11 in the 7th oil duct 27 so that load feedback loop through the 9th oil duct 29, the
At eight oil ducts 28 and the 7th oil duct 27, being blocked at stifled 11, oil-in 5 flows through main safety valve
The internal galleries of bar and damping 10, the 5th oil duct the 25, the 6th oil duct the 26, the 4th oil duct 24 excessively,
3rd oil duct 23, is blocked at secondary security valve opening 2, it is adaptable to variable pump load sensitive system.
When installing stifled 11 in the internal galleries of the main safety valve bar in the safe valve opening of main 1,
In 7th oil duct 27, damping 10 is installed so that load feedback loop is through the 9th oil duct the 29, the 8th
Oil duct the 28, the 7th oil duct 27, damping the 10, the 4th oil duct the 24, the 6th oil duct the 26, the 5th oil duct
25, enter the internal galleries of main safety valve bar, be blocked in the internal galleries of main safety valve bar
At stifled 11 installed, it is adaptable to dosing pump load sensitive system.
The load sensing multi-way valve first valve body that the present invention provides can be applied in load-sensitive multichannel
In valve first.
In the illustrative examples of the load sensing multi-way valve first of present invention offer, load-sensitive
The safe valve opening of main 1 in banked direction control valves first valve body and its internal main safety lever energy arranged
Enough form main relief valve, secondary security valve opening 2 in load sensing multi-way valve first valve body and its
The internal secondary security valve rod arranged can form secondary security valve.Load sensing multi-way valve first
Middle position off-load valve opening in the valve body 3 middle position off-load valve rod internal with it can be formed in position off-load
Valve.Dynamic antivibration valve opening 4 in load sensing multi-way valve first valve body is dynamic with its internal setting
Damping valve rod can form dynamic antivibration valve, the damping duct in load sensing multi-way valve first valve body
In can be provided with damping.
It should be understood that in each embodiment above-mentioned, between mouth and mouth, between mouth and hole, with
And between Kong Yukong, all can connect by arranging oil duct, arranging of oil duct can be by processing work
Skill hole is formed.
By the description of each embodiment above-mentioned, the present invention can be derived and at least have the advantage that
1) the load sensing multi-way valve first valve body that the present invention provides, uses the design of load-sensitive module,
Make load sensing multi-way valve only need to exchange stifled and damping position and just can be suitable for dosing pump load-sensitive
System or variable pump load sensitive system, strengthen the host adaptation of banked direction control valves, it is achieved multi-purpose valve.
2) the load sensing multi-way valve first valve body that the present invention provides, has multiple duty valve block and installs
, there are relief valve, middle position unloader, dynamic antivibration valve, check valve etc. in position, can be according to demand
Select different valve blocks to install, strengthen banked direction control valves host adaptation.
3) the load sensing multi-way valve first valve body that the present invention provides, pressure signal collection point and maintenance
Point centralized arrangement, it is simple to install, convenient maintenance.
4) the load sensing multi-way valve first valve body that the present invention provides, has two groups of oil-ins and oil return
Mouthful, arrange up and down.
In sum, the load sensing multi-way valve first valve body that the present invention provides, its valve block body bag
Include oil-in, oil return opening, guide's oil duct, high-pressure oil duct, low pressure oil duct etc., be provided simultaneously with safety
The installation sites such as valve, middle position unloader, dynamic antivibration valve, check valve, can be simultaneously suitable for quantitatively
Pump load sensory system and variable pump load sensitive system.All employing equivalents or equivalent transformation shape
The banked direction control valves first valve body structure become, all falls within the protection domain of application claims.
In describing the invention, it is to be understood that use " first ", " second ", " the
Three " ..., the word such as " 9th " limits parts, it is only for be easy to above-mentioned zero
Part is distinguished, and as not having Stated otherwise, above-mentioned word does not has particular meaning, therefore can not
It is interpreted as limiting the scope of the invention.
Finally should be noted that: above example only in order to technical scheme to be described rather than
It is limited；Although the present invention being described in detail with reference to preferred embodiment, art
Those of ordinary skill it is understood that still the detailed description of the invention of the present invention can be modified
Or portion of techniques feature is carried out equivalent；Without deviating from the spirit of technical solution of the present invention,
It all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (15)
1. a load sensing multi-way valve first valve body, it is characterised in that: include valve block body,
Oil-in (5), oil return opening (6) and load feedback mouth (7) it is provided with on described valve block body,
Described valve block is the most internal is provided with the safe valve opening of main (1) and secondary security valve opening (2)；
At least shape between the safe valve opening of described main (1) and its internal main safety lever arranged
Become main oil suction chamber, main oil back chamber, main spring side chamber and main without spring side chamber；Described
Main oil suction chamber connects without spring side chamber with described oil-in (5) and described main, described main
Oil back chamber connects with described oil return opening (6)；
At least shape between described secondary security valve opening (2) and its internal secondary security valve rod arranged
Become secondary oil suction chamber, secondary oil back chamber, secondary spring side chamber and secondary without spring side chamber；Described
Secondary oil suction chamber connects without spring side chamber with described secondary, described secondary oil back chamber and described oil return
Mouth (6) connection；
Described oil-in (5) is by oil duct and described main spring side chamber and described secondary oil suction chamber
Connection；Described load feedback mouth (7) is by oil duct and described main spring side chamber and described secondary
Oil suction chamber connects；
According to different from the pump that described oil-in (5) connects, selectivity is arranged as follows:
Connect with described main spring side chamber and described secondary oil suction chamber at described oil-in (5)
Damping (10) is set on oil duct, in described load feedback mouth (7) and described main spring side chamber
On the oil duct connected with described secondary oil suction chamber, stifled (11) are set；
Or,
Connect with described main spring side chamber and described secondary oil suction chamber at described oil-in (5)
Stifled (11) are set on oil duct, in described load feedback mouth (7) and described main spring side chamber and
On the oil duct of described secondary oil suction chamber connection, damping (10) is set.
2. load sensing multi-way valve first valve body as claimed in claim 1, it is characterised in that:
Described oil-in (5) connects with described main spring side chamber and described secondary oil suction chamber and arranges
The oil duct of damping (10) or stifled (11) is arranged in described main safety valve bar, and described load is anti-
Feedback mouth (7) connects and arranges stifled (11) with described main spring side chamber and described secondary oil suction chamber
Or the oil duct of damping (10) is arranged on described valve block, and this is internal.
3. load sensing multi-way valve first valve body as claimed in claim 1, it is characterised in that:
Middle position off-load valve opening (3), described middle position off-load valve opening (3) it is additionally provided with on described valve block body
And position off-load oil suction chamber, the off-load of middle position are returned at least being formed between its internal middle position off-load valve rod
Oil pocket, middle position unloading spring side chamber and the off-load of middle position without spring side chamber, described middle position off-load oil-feed
Chamber connects without spring side chamber with described oil-in (5) and described middle position off-load, described middle position off-load
Oil back chamber connects with described oil return opening (6), and described middle position unloading spring side chamber is anti-with described load
Feedback mouth (7) connection.
4. the load sensing multi-way valve first valve body as described in any one of claim 1-3, it is special
Levy and be: on described valve block body, be additionally provided with dynamic antivibration valve opening (4), described dynamic antivibration
At least formed between valve opening (4) and its internal dynamic antivibration valve rod arranged dynamic antivibration oil suction chamber,
Dynamic antivibration oil back chamber, dynamic antivibration spring side chamber and dynamic antivibration are without spring side chamber；Described dynamic
State damping oil suction chamber connect with described oil-in (5), described dynamic antivibration oil suction chamber with described enter
Damping duct it is provided with, in described damping duct and described oil-feed on the oil duct that hydraulic fluid port (5) connects
The other oil duct being connected to connect described dynamic antivibration without spring side chamber on the oil duct that mouth (5) connects,
On the oil duct that described damping duct connects with described dynamic antivibration oil suction chamber, other being connected to connects described moving
The oil duct of state damping spring side chamber, described dynamic antivibration oil back chamber connects described oil return opening (6).
5. load sensing multi-way valve first valve body as claimed in claim 1, it is characterised in that:
Also setting up LS pressure tap (8) on described valve block body, described LS pressure tap (8) connects institute
State load feedback mouth (7).
6. load sensing multi-way valve first valve body as claimed in claim 5, it is characterised in that:
Being additionally provided with oil-feed pressure tap (9) on described valve block body, described oil-feed pressure tap (9) is even
Logical described oil-in (5).
7. load sensing multi-way valve first valve body as claimed in claim 6, it is characterised in that:
Described load feedback mouth (7), described LS pressure tap (8) and described oil-feed pressure tap (9)
It is arranged in the same side of described valve block body.
8. load sensing multi-way valve first valve body as claimed in claim 3, it is characterised in that:
The safe valve opening of described main (1) and described middle position off-load valve opening (3) run through whole described valve block
Body, and the safe valve opening of described main (1) and described middle position off-load valve opening (3) pass described
The end of valve block body is positioned at the same side of described valve block body.
9. load sensing multi-way valve first valve body as claimed in claim 1, it is characterised in that:
Described oil-in (5) is two, two described oil-in (5) connections, runs through whole described
Valve block body, described oil return opening (6) is two, two described oil return opening (6) connections, passes through
Wear whole described valve block body.
10. load sensing multi-way valve first valve body as claimed in claim 9, it is characterised in that:
Valve rod is set in one of them described oil return opening (6) and forms check valve.
11. load sensing multi-way valve first valve bodies as claimed in claim 1, it is characterised in that:
Described oil-in (5) and described oil return opening (6) use Flange joint oil pipe.
12. 1 kinds of load sensing multi-way valve firsts, it is characterised in that: include such as claim 1-11
Load sensing multi-way valve first valve body described in any one.
13. load sensing multi-way valve firsts as claimed in claim 12, it is characterised in that: institute
State the safe valve opening of the main (1) in load sensing multi-way valve first valve body and its internal master arranged
Level security valve rod forms main relief valve, the secondary peace in described load sensing multi-way valve first valve body
Full valve opening (2) forms secondary security valve with its internal secondary security valve rod arranged.
14. load sensing multi-way valve firsts as claimed in claim 13, it is characterised in that: institute
The middle position stating middle position off-load valve opening (3) in load sensing multi-way valve first valve body internal with it is unloaded
Lotus valve rod forms middle position unloader.
The 15. load sensing multi-way valve firsts as described in claim 13 or 14, it is characterised in that:
Dynamic antivibration valve opening (4) in described load sensing multi-way valve first valve body and its internal setting
Dynamic antivibration valve rod forms dynamic antivibration valve, the damping in described load sensing multi-way valve first valve body
Damping it is provided with in duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510024493.7A CN105840573B (en) | 2015-01-16 | 2015-01-16 | Load sensing multi-way valve first valve body and load sensing multi-way valve first |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510024493.7A CN105840573B (en) | 2015-01-16 | 2015-01-16 | Load sensing multi-way valve first valve body and load sensing multi-way valve first |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840573A true CN105840573A (en) | 2016-08-10 |
| CN105840573B CN105840573B (en) | 2018-04-06 |
Family
ID=56580262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510024493.7A Active CN105840573B (en) | 2015-01-16 | 2015-01-16 | Load sensing multi-way valve first valve body and load sensing multi-way valve first |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840573B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762998A (en) * | 2017-11-23 | 2018-03-06 | 宁波文泽机电技术开发有限公司 | Load-sensitive pressure filters valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034563A (en) * | 1976-07-28 | 1977-07-12 | International Harvester Company | Load sensitive hydraulic system |
| CN202280675U (en) * | 2011-08-05 | 2012-06-20 | 江苏国瑞液压机械有限公司 | Multi-way valve oil inlet joint provided with dynamic induction and priority functions |
| CN102913438A (en) * | 2011-08-05 | 2013-02-06 | 江苏国瑞液压机械有限公司 | Hydraulic pump changeover valve |
| CN103398038A (en) * | 2013-08-14 | 2013-11-20 | 徐州徐工液压件有限公司 | Multifunctional three-way flow control valve and hydraulic system of construction machinery |
| CN203384149U (en) * | 2012-09-18 | 2014-01-08 | 赵江 | Manual hydraulic proportional valve |
| CN104047917A (en) * | 2014-06-23 | 2014-09-17 | 柳州柳工液压件有限公司 | Flow distributor for construction machine |
| CN204553381U (en) * | 2015-01-16 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Load sensing multi-way valve first valve body and load sensing multi-way valve first |
-
2015
- 2015-01-16 CN CN201510024493.7A patent/CN105840573B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034563A (en) * | 1976-07-28 | 1977-07-12 | International Harvester Company | Load sensitive hydraulic system |
| CN202280675U (en) * | 2011-08-05 | 2012-06-20 | 江苏国瑞液压机械有限公司 | Multi-way valve oil inlet joint provided with dynamic induction and priority functions |
| CN102913438A (en) * | 2011-08-05 | 2013-02-06 | 江苏国瑞液压机械有限公司 | Hydraulic pump changeover valve |
| CN203384149U (en) * | 2012-09-18 | 2014-01-08 | 赵江 | Manual hydraulic proportional valve |
| CN103398038A (en) * | 2013-08-14 | 2013-11-20 | 徐州徐工液压件有限公司 | Multifunctional three-way flow control valve and hydraulic system of construction machinery |
| CN104047917A (en) * | 2014-06-23 | 2014-09-17 | 柳州柳工液压件有限公司 | Flow distributor for construction machine |
| CN204553381U (en) * | 2015-01-16 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Load sensing multi-way valve first valve body and load sensing multi-way valve first |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762998A (en) * | 2017-11-23 | 2018-03-06 | 宁波文泽机电技术开发有限公司 | Load-sensitive pressure filters valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105840573B (en) | 2018-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202251199U (en) | Electro-hydraulic proportional combined maneuvering valve | |
| CN105840571A (en) | Valve body of load-sensitive multi-way valve reversing link and load-sensitive multi-way valve reversing link | |
| CN103089729B (en) | Quantitative system load-sensitive multiple directional control valve | |
| CN101542134B (en) | LS control arrangement | |
| CN105840573A (en) | Valve body of first link of load-sensitive multi-way valve and first link of load-sensitive multi-way valve | |
| CN109764018A (en) | Multi-way valve with off-load in active gage Yu oil return logic function | |
| CN201513403U (en) | Multistage cylinder integrated control hydraulic valve group | |
| CN201273312Y (en) | Special valve block for jib pump vehicle pumping integration | |
| CN105422539B (en) | Double loop multiple directional control valve | |
| CN105402449B (en) | Hydraulic control one-way valve | |
| CN101278132B (en) | Hydraulic control device | |
| CN203488786U (en) | Multiway valve body | |
| CN106593984B (en) | A kind of Hydraulic integration valve group with automatic dual-speed bringing onto load balance | |
| CN102913438A (en) | Hydraulic pump changeover valve | |
| CN202280675U (en) | Multi-way valve oil inlet joint provided with dynamic induction and priority functions | |
| CN204553387U (en) | Multi-way valve end cap and hydraulic multitandem valve | |
| CN204553381U (en) | Load sensing multi-way valve first valve body and load sensing multi-way valve first | |
| CN210118300U (en) | Asymmetric flow matching type balance locking system | |
| CN203161701U (en) | Damped speed controllable hydraulic valve bank | |
| CN202510440U (en) | Differential balance valve, and hydraulic equipment and engineering machinery provided with balance valve | |
| CN215719901U (en) | Flow distribution system resistant to flow saturation | |
| CN103233935A (en) | Integrated valve group of hydraulic system | |
| CN204476902U (en) | A kind of load-sensitive valve | |
| CN205977860U (en) | From decompression load sensing multiple directional control valve | |
| CN202646212U (en) | Double hydraulic control one-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |