CN105805074B - A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow - Google Patents
A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow Download PDFInfo
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- CN105805074B CN105805074B CN201610375318.7A CN201610375318A CN105805074B CN 105805074 B CN105805074 B CN 105805074B CN 201610375318 A CN201610375318 A CN 201610375318A CN 105805074 B CN105805074 B CN 105805074B
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses the multichannel valve group and hydraulic crawler excavator at a kind of three pump interflow, connection is performed including centre control connection and left and right, the left connection that performs includes being sequentially connected logical left travel control valves, standby control valve, bucket, the control valve of dipper second and the control valve of swing arm first, and the right connection that performs includes being sequentially connected logical right travel control valve, rotary control valve, the control valve of swing arm second and the control valve of dipper first；Centre control connection includes straight line moving control valve, the first converging valve, the second converging valve, and it is disposed with two main oil inlets for connecting a main oil pump respectively, left and right performs and an auxiliary oil inlet is respectively disposed with connection, and two auxiliary oil inlets one auxiliary oil pumps of common connection.Its technical scheme can open auxiliary pump via auxiliary oil inlet to swing arm fuel feeding, the hydraulic oil for enabling main oil pump to provide fully coordinates the action of remaining each executing agency when the underfed that two main oil inlets provide is to maintain the coordination between each executing agency.
Description
Technical field
The present invention relates to excavator field, more particularly to the multichannel valve group and hydraulic crawler excavator at a kind of three pump interflow.
Background technology
Hydraulic crawler excavator, is a kind of engineering machinery for being widely used in earthwork construction, the master as its key control unit
Control valve group, is the hydraulic multichannel control valve of highly-integrated functions, and the structure and its mode of operation of hydraulic multitandem valve determine
The control mode and transaction capabilities of excavator hydraulic system.The large excavator hydraulic circuit of main flow mainly has negative in the market
Flow control hydraulic system, positive flow control hydraulic system and load-sensitive hydraulic system three types.Tested through market for many years
Card, the hydraulic control system of three types have developed more maturation.But the hydraulic control system of three types mutually can not be simultaneous
Hold so that the application of same type banked direction control valves is extremely limited, and has had a strong impact on the popularization and application of banked direction control valves.
It is classified in addition, large-scale digging machine is more in the market with 40T levels, 70T levels etc., the banked direction control valves to match therewith also form more
Kind style, not only adds R＆D costs and manufacturing cost, is less useful for mass production.It is general in large excavator at present
Double-pump confluence system is used, each executing agency's action is partially slow when so causing composite move, and operating efficiency is relatively low, especially position
The dipper connection of connection left and right edges position and swing arm connection is controlled especially to have a great influence in middle, and the application of Dual-pump flow-converging multichannel valve group
Scope is influenceed by its flow, and its application is also extremely limited.
Refering to Patent No. CN200720015804.4 Chinese patent " three pump fen-confluence fluid-control multi-way valves ", one is disclosed
Three pump fen-confluence fluid-control multi-way valves of the kind for mini-excavator hydraulic system；Including oil inlet and oil return valve block, walking valve block, boom valve
Piece, scraper bowl valve block, intermediate oil inlet valve block, soil-shifting valve block, dipper valve block, interflow valve block, auxiliary valve block, revolution valve block, walking valve
Piece, oil inlet and oil return valve block, it is characterized in that, interflow valve block includes valve body, valve seat, spring, steel ball using unidirectional confluent structure and connected
Connect composition；The shunt reversing valve bar of auxiliary valve block is provided with splitter box；The valve body of intermediate oil inlet valve block communicates inserting overflow with oil circuit
Valve.The interflow valve block of the patent is using unique unidirectional confluent structure, and dipper valve block has double pump valve rod interflow function, but it is still
Fail to solve when the underfed that main oil inlet provides is to maintain the coordination between each executing agency, each executing agency's fortune
The problem of row is slow, fuel feeding deficiency, it is difficult to ensure each executing agency's coordination of composite move.
The content of the invention
For the above-mentioned problems in the prior art, a kind of the multichannel valve group and hydraulic multichannel at three pumps interflow are now provided
Valve, it is intended to solve, when the underfed that main oil inlet provides is to maintain the coordination between each executing agency, respectively to perform machine
The problem of structure operation is slow, fuel feeding deficiency, to ensure each executing agency's coordination of composite move, and improves operating efficiency.
Concrete technical scheme is as follows：
A kind of multichannel valve group at three pumps interflow, joins suitable for hydraulic crawler excavator, including middle control, is distributed in middle control
The left execution connection of the connection left and right sides and it is right performs connection, centre control connection respectively with it is left perform connection, right execution joins and is connected, to control
The flow direction of hydraulic oil in multichannel valve group, and on the direction away from the middle control connection, left execution connection is logical including being sequentially connected
Left travel control valves, standby control valve, bucket, the control valve of dipper second and the control valve of swing arm first, right execution
Connection includes being sequentially connected logical right travel control valve, rotary control valve, the control valve of swing arm second and the control valve of dipper first；
Centre control connection includes straight line moving control valve, the first converging valve and the second converging valve, on centre control connection
It is disposed with the first main oil inlet and the second main oil inlet being connected respectively with straight line moving control valve, and two main oil inlets,
A main oil pump is connected respectively, two converging valves, is connected and is connected respectively with straight line moving control valve.
Also, left travel control valves are connected with the first oil inlet and the first converging valve, rotary control valve and the second interflow
Valve and the second oil inlet are connected, and the auxiliary oil inlet for being disposed with and being connected with the control valve of swing arm first is joined in left execution,
In the right another auxiliary oil inlet for performing and being disposed with connection and being connected with the control valve of dipper first, and two auxiliary oil inlets are common
Connect an auxiliary oil pump.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, two auxiliary oil inlets point
It is not arranged on the left swing arm connection for performing connection and the right dipper connection for performing connection；
Wherein, swing arm connection performs the upper one end away from middle control connection of connection positioned at left, and has swing arm first in swing arm connection
Control valve；
Dipper connection performs the upper one end away from middle control connection of connection positioned at right, and in dipper connection there is dipper first to control
Valve.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, centre control connection also includes：
First throttle valve and the first check valve, are connected with the first converging valve；
Main overflow valve, is connected with first throttle valve, to control the maximum pressure of multichannel valve group；
Wherein, the hydraulic oil for flowing through the first check valve is entered the control chamber of the first converging valve by first throttle valve, to control
Make the unlatching and closing of the first converging valve；And the maximum pressure of the hydraulic oil of the first check valve is flowed through by the control of main overflow valve, enter
And control the maximum pressure of hydraulic valve bank.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, centre control connection also includes：
Second throttle and the second check valve, are connected with the second converging valve, flow through the hydraulic oil of the second check valve by
Second throttle enters the control chamber of the second converging valve, to control the unlatching of the second converging valve and closing；And by main overflow valve
Control flows through the maximum pressure of the hydraulic oil of the second check valve, and then controls the maximum pressure of hydraulic valve bank.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, it is upper away from swing arm connection
Between control one end of connection to offer an oil return opening P, offer another oil return opening in the upper one end away from middle control connection of dipper connection
P, and two oil return openings P, P are connected with oil return box.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, it is auxiliary on swing arm connection
Oil inlet is helped to be connected with the control chamber inside swing arm connection；Auxiliary oil inlet on dipper connection and the control inside dipper connection
Chamber is connected.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, centre control connection also includes
First by-passing valve and the second by-passing valve, wherein, the first by-passing valve passes through with the first converging valve, left connection and the oil return box of performing
Oil circuit or petroleum pipeline are connected；
Second by-passing valve is connected with the second converging valve, right connection and the oil return box of performing by oil circuit or petroleum pipeline.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, neutral control valve connection also wraps
The first control valve and the second control valve are included, and the first control valve is connected with the first converging valve, the second control valve and the second converging valve
It is connected.
In the multichannel valve group at three pump provided by the invention interflow, also have the feature that, the positive normal pressure of main overflow valve
Power be 343bar, boosting when pressure 373bar, the latus rectum of the valve element of straight line moving control valve is 40mm.
Present invention also offers a kind of hydraulic crawler excavator, has the multichannel valve group that three above-mentioned pumps collaborate.
The beneficial effect of above-mentioned technical proposal is：
During the multichannel valve group concrete application at (1) three pump interflow, it can be maintained in the underfed of two main oil inlets offers
During coordination between each executing agency, main oil pump can be made by opening auxiliary pump via auxiliary oil inlet to swing arm fuel feeding
The hydraulic oil of offer can fully coordinate the action of remaining each executing agency, so as to which boom priority function be effectively ensured, make composite moving
Each executing agency's coordination made；
(2) two auxiliary oil inlets are respectively arranged on swing arm connection and dipper connection, and are joined directly together with its internal control chamber
It is logical so that after opening auxiliary pump, digging force can be effectively increased, digging efficiency is improved and can extend digging by improving digging force
The application field of machine, the purpose of energy-conservation can be reached by improving digging efficiency.
Brief description of the drawings
Fig. 1 is a kind of working state schematic representation one of the embodiment of the multichannel valve group at three pumps interflow of the present invention；
Fig. 2 is a kind of working state schematic representation of the middle control connection of the embodiment of the multichannel valve group at three pumps interflow of the present invention
One；
Fig. 3 is a kind of working state schematic representation two of the embodiment of the multichannel valve group at three pumps interflow of the present invention；
Fig. 4 is a kind of working state schematic representation of the middle control connection of the embodiment of the multichannel valve group at three pumps interflow of the present invention
Two；
Fig. 5 is a kind of cross-section structure view of the swing arm connection of the embodiment of the multichannel valve group at three pumps interflow of the present invention；
Fig. 6 is the cross section view of L-L lines of vision in Fig. 5.
In accompanying drawing：0th, the first control valve；1st, the first by-passing valve；2nd, the first converging valve；3rd, the second converging valve；4th, the second bypass
Valve；5th, the second control valve；6th, first throttle valve；7th, the first check valve；8th, main overflow valve；9th, the second check valve；10th, the second throttling
Valve；V1, the control valve of swing arm first；V2, the control valve of dipper second；V3, bucket；V4, standby control valve；V5, left lateral are walked
Control valve；V6, straight line moving control valve；V7, right travel control valve；V8, rotary control valve；V9, the control valve of swing arm second；V10、
The control valve of dipper first；PL, the first main oil inlet；PR, the second main oil inlet；PF, auxiliary oil inlet；Swing arm connection 11.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, it is real below
The multichannel valve group for applying 1 to 6 pair of example combination accompanying drawing, three pumps interflow provided by the invention is specifically addressed.
Fig. 1 is a kind of working state schematic representation one of the embodiment of the multichannel valve group at three pump interflow, and Fig. 2 is that a kind of three pumps close
The working state schematic representation one of control connection among the embodiment of the multichannel valve group of stream, Fig. 3 are a kind of banked direction control valves at three pump interflow
The working state schematic representation two of the embodiment of group, Fig. 4 are a kind of middle control connection of the embodiment of the multichannel valve group at three pump interflow
Working state schematic representation two, as shown in Figure 1 to Figure 4 shown in, the multichannel valve group at three pump provided by the invention interflow is applied to large-scale
Hydraulic crawler excavator, including middle control connection, be distributed in the middle control connection left and right sides left execution connection and it is right perform connection, and remote
It is left on direction from the middle control connection to perform combination to control the motion of excavator left side apparatus and other part thereofs, it is right
Combination is performed to control the motion of apparatus and other part thereofs on the right side of the excavator, i.e., left execution connection and the right connection that performs are distinguished
Control the running status of excavator each side executing agency, centre control connection respectively with it is left performs connection, right execution joins and is connected,
To control the trend of hydraulic oil in multichannel valve group.
Specifically, on the direction away from the middle control connection, left execution connection walks control including being sequentially connected logical left lateral
Valve V5, standby control valve V4, bucket V3, dipper the second control valve V2 and swing arm the first control valve V1 processed, right execution
Connection is controlled including being sequentially connected logical right travel control valve V7, rotary control valve V8, swing arm the second control valve V9 and dipper first
Valve V10 processed.Centre control connection includes a straight line travel control valve V6, the first converging valve 2 and the second converging valve 3, is controlled in centre
The main main oil inlet P R of oil inlet P L and second of first to be connected respectively with straight line moving control valve V6, and two are disposed with system connection
Individual main oil inlet P L and PR connects a main oil pump respectively, to be supplied to straight line moving control valve V6 and middle control connection inside
Oil, and determine oil circuit break-make and hydraulic oil in centre by straight line moving control valve V6 valve element phase position residing in valve body
Flow direction inside control connection, two converging valves are connected and are connected respectively with straight line moving control valve V6.
Also, left travel control valves V5 is connected with the first oil inlet P L and the first converging valve 2, rotary control valve V8 and
Two converging valves 3 and the second oil inlet P R are connected, in it is left perform connection on be disposed be connected with the first control valve of swing arm V1 one
Oil inlet P F is aided in, in the right another auxiliary oil inlet P F for performing and being disposed with connection and being connected with the first control valve of dipper V10, and
Two auxiliary oil inlet P F connect an auxiliary oil pump jointly.
In the above-mentioned technical solutions, when swing arm executing agency and other executing agency's composite moves, two main oil inlets
The underfed that PL and PR is provided is to maintain the coordination between each executing agency, now, in order that boom priority function obtains
To guarantee, can by opening auxiliary pump via auxiliary oil inlet P F to swing arm fuel feeding, on the premise of boom priority function is ensured,
The hydraulic oil for enabling main pump to provide fully coordinates the action of remaining each executing agency, so as to which boom priority work(is effectively ensured
Energy, make each executing agency's coordination of composite move.
In a preferred embodiment, specifically as shown in figs. 2 and 4, middle control connection also includes：First throttle
The check valve 7 of valve 6 and first, is connected with the first converging valve 2；Main overflow valve 8, is connected with first throttle valve 6, to control
The maximum pressure of multichannel valve group；Wherein, the hydraulic oil after the one-way flow of the first check valve 7 enters first by first throttle valve 6
The control chamber of converging valve 2, to control the phase position residing for the valve element of the first converging valve 2, that is, control opening for the first converging valve 2
Close break-make；And the maximum pressure of the hydraulic oil of the first check valve 7 is flowed through by the control of main overflow valve 8, and then control hydraulic valve bank
Maximum pressure.
As in further preferred embodiment, centre control connection also includes：The check valve of second throttle 10 and second
9, it is connected with the second converging valve 3, the hydraulic oil for flowing through the second check valve 9 enters the second converging valve 3 by second throttle 10
Control chamber, to control the phase position at the valve element of the second converging valve 3, that is, control the break-make of the second converging valve 3；And
The maximum pressure of the hydraulic oil of the second check valve 9 is flowed through by the control of main overflow valve 8, and then controls the maximum pressure of hydraulic valve bank.
Further, the normal pressure of main overflow valve 8 be 343bar, boosting when pressure 373bar, be common to the hydraulic pressure of 40T~120T levels
Excavator.The latus rectum of straight line moving control valve V6 valve element is 40mm.Wherein, concrete numerical value can accordingly be adjusted according to practical application
It is whole, it should not be limited to this.
In a preferred embodiment, specifically as shown in Figures 1 and 2, two auxiliary oil inlet P F are respectively arranged
Join in the left dipper for performing the swing arm connection joined and right execution connection, wherein, swing arm connection above controls positioned at left execution connection away from middle
One end of connection, and there is the first control valve of swing arm V1 in swing arm connection；Dipper connection performs connection above away from middle control connection positioned at right
One end, and there is the first control valve of dipper V10 in dipper connection.Further, in the upper one end away from middle control connection of swing arm connection
An oil return opening P4 is offered, another oil return opening P3, and two oil returns are offered in the upper one end away from middle control connection of dipper connection
Mouth is connected with oil return box.
Specific to combine Fig. 5 and Fig. 6 as further preferred embodiment, wherein Fig. 5 is a kind of three pumps interflow of the present invention
Multichannel valve group embodiment swing arm connection cross-section structure view, Fig. 6 be Fig. 5 in L-L lines of vision cross section view, such as institute in figure
Show, the auxiliary oil inlet P F on swing arm connection is connected with swing arm connection internal control chamber；Corresponding, on dipper connection
Auxiliary oil inlet P F is connected with the control chamber inside dipper connection.
Specifically, when scraper bowl excavates, auxiliary pump PF is opened, passes through hydraulic oil auxiliary on the first control valve of dipper V10
Oil inlet P F is helped to enter in dipper connection, and hydraulic oil enters swing arm by the auxiliary oil inlet P F on the first control valve of swing arm V1
In connection, digging force can be effectively increased, digging efficiency is improved and can extend the application field of digging machine by improving digging force, lead to
The purpose of energy-conservation can be reached by crossing raising digging efficiency.
As further embodiment, centre control connection also includes the first by-passing valve 1 and the second by-passing valve 4, wherein, the
One by-passing valve 1 is connected with the first converging valve 2, left connection and the oil return box of performing by oil circuit or petroleum pipeline；Second by-passing valve 4
It is connected with the second converging valve 3, right connection and the oil return box of performing by oil circuit or petroleum pipeline.
As further embodiment, neutral control valve, which joins, also includes the first control valve 0 and the second control valve 5, and the
One control valve 0 is connected with the first converging valve 2, and the second control valve 5 is connected with the second converging valve 3.
It is worthy of note that the multiple disengaging and actuator port marked in figure correspond to and distinguish each valve of pilot control
Working condition, for example, with reference to shown in Fig. 2, it is illustrated that the first control valve 0 there are two guides oil inlet and outlet Dr5 and Pr10, and
First control valve 0 has two phases, and one is conducted phase disconnection, wherein the change of phase by two oil inlet and outlet Dr5 and
Pr10 pilot controls, so as to adjust the keying of the first control valve 0, and then other internal valve bodies are carried out with the change of oil circuit flow direction.
Similar, the second control valve 5 has guide's oil inlet and outlet Dr6 and Pr3, and the first by-passing valve 1 has guide oil inlet and outlet Pr1,
Second by-passing valve 4 has guide's oil inlet and outlet Pr2, and main overflow valve 8 has guide oil inlet and outlet Pr9, and as shown in FIG., also has
There are multiple guide's oil inlet and outlets in addition, no longer show one by one.
Hereinafter, illustrated with a kind of specific embodiment, it should be pointed out that described in implementation below it
Structure, technique, selection are only to illustrate the feasibility of embodiment, and the intention of the unrestricted scope of the present invention.
Understood with reference to Fig. 1-Fig. 4, centre control connection mainly passes through phase position where straight line moving control valve V6 inner spools
The flow direction of hydraulic oil to being flowed into by two main oil inlet P L and PR is controlled, and passes through two by-passing valves, two conjunctions simultaneously
Flow the hydraulic oil in control connection among valve, two control valves, a main overflow valve 8 and two choke valves and check valve control
Flow direction and break-make, so as to perform alliance oil to positioned at the left and right of both sides according to demand.Connection left and right is also performed in the present invention in left and right
An auxiliary oil inlet P F is respectively provided with the swing arm connection and dipper connection at both ends, to solve fuel supply flow rate under compound action
Deficiency, it is difficult to realize the problem of actuating mechanism is preferential.
Specifically, in swing arm executing agency and other executing agency's composite moves, what two main oil inlet Ps L, PR provided
Underfed is to maintain the coordination between each executing agency, to make boom priority function be guaranteed, is aided in by opening
Pump on the premise of boom priority function is ensured, enables the hydraulic oil of main pump offer fully to coordinate remaining and respectively held to swing arm fuel feeding
The action of row mechanism.
In addition, the multichannel valve group of the present invention uses slice structure, it is more for the load-sensitive suitable for large hydraulic excavator
Road valve group, and can be applied to the different control systems of digging machine：Positive flow+load sensitive system, minus flow+load sensitive system and
Ioad-sensing control hydraulic system, the application of load sensing multi-way valve enumerate three kinds of different type hydraulic control systems.According to
Different Control Coolings, every advantage of the different control systems of tradition is can absorb, to improve load sensing multi-way valve group in difference
Application in hydraulic control system.By walking the functional modules such as valve, converging valve and blocking mechanism to main oil inlet on the connection of centre
PL, PR oil circuit control, and realize that main oil inlet P L, PR oil circuit respectively performs the only fuel feeding of receipts or other documents in duplicate, interflow fuel feeding and off-load etc. to its both sides
Function.
Present invention also offers a kind of hydraulic crawler excavator, has the multichannel valve group that three above-mentioned pumps collaborate.Using three pump controls
System processed, the flow according to needed for system, not only meet the application of double pump control system；Meanwhile meet answering for three pump control systems
With；Extend the application on hydraulic crawler excavator.Using to swing arm executing agency or dipper executing agency DFF Direct Fuel Feed, drop
The low pressure loss, improve the utilization rate of energy.
In the above-described techniques, can be in the flow of two main oil inlets offers during the multichannel valve group concrete application at three pumps interflow
When being not enough to maintain the coordination between each executing agency, swing arm can be supplied via auxiliary oil inlet P F by opening auxiliary pump
Oil, the hydraulic oil for enabling main oil pump to provide fully coordinates the action of remaining each executing agency, so as to which boom priority work(be effectively ensured
Energy, make each executing agency's coordination of composite move；Two auxiliary oil inlet P F are respectively arranged on swing arm connection and dipper connection,
And be joined directly together with its internal control chamber logical so that after opening auxiliary pump, digging force can be effectively increased, improve digging efficiency and
The application field of digging machine can be extended by improving digging force, can reach the purpose of energy-conservation by improving digging efficiency.
Presently preferred embodiments of the present invention is the foregoing is only, is merely illustrative for the purpose of the present invention, and it is non-limiting
's.Those skilled in the art understands, many changes can be carried out to it in the spirit and scope that the claims in the present invention are limited,
Modification, in addition it is equivalent, but fall within protection scope of the present invention.
Claims (10)
1. a kind of multichannel valve group at three pumps interflow, join suitable for hydraulic crawler excavator, including middle control, be divided among described and control
The left execution connection of the system connection left and right sides and it is right performs connection, it is described among control connection respectively with it is described it is left perform connection, right execution joins phase
Even, to control the flow direction of hydraulic oil in the multichannel valve group；
And on the direction away from the middle control connection, the left execution connection, which includes, is sequentially connected logical left travel control valves
（V5）, standby control valve（V4）, bucket（V3）, the control valve of dipper second（V2）And the control valve of swing arm first（V1）,
On the direction away from the middle control connection, the right execution connection, which includes, is sequentially connected logical right travel control valve（V7）, return
Turn control valve（V8）, the control valve of swing arm second（V9）And the control valve of dipper first（V10）, it is characterised in that
Control connection includes straight line moving control valve among described（V6）, the first converging valve（2）And second converging valve（3）, in institute
State be disposed with middle control connection respectively with the straight line moving control valve（V6）The first main oil inlet being connected（PL）With
Two main oil inlets（PR）, and two main oil inlets（PL、PR）A main oil pump, two converging valves are connected respectively（2、3）Phase
Connect and respectively with the straight line moving control valve（V6）Connect；
Also, the left travel control valves（V5）With the described first main oil inlet（PL）And first converging valve（2）It is connected,
The rotary control valve（V8）With second converging valve（3）And the second main oil inlet（PR）It is connected, is held in the left side
It is disposed with and the control valve of swing arm first on row connection（V1）The auxiliary oil inlet being connected（PF）, join in right perform
It is disposed with and the control valve of dipper first（V10）Another auxiliary oil inlet being connected（PF）, and two auxiliary
Oil inlet（PF）One auxiliary oil pump of common connection.
2. the multichannel valve group at three pumps interflow as claimed in claim 1, it is characterised in that two auxiliary oil inlets（PF）Point
It is not arranged on the left swing arm connection for performing connection and the right dipper connection for performing connection；
Wherein, the swing arm connection is located at left perform and joins upper one end joined away from the middle control, and in swing arm connection
With the control valve of swing arm first（V1）；
The dipper connection is located at right perform and joins upper one end joined away from the middle control, and has institute in dipper connection
State the control valve of dipper first（V10）.
3. the multichannel valve group at three pumps interflow as claimed in claim 2, it is characterised in that control connection also includes among described：
First throttle valve（6）With the first check valve（7）, with first converging valve（2）It is connected；
Main overflow valve（8）, with the first throttle valve（6）It is connected, to control the maximum pressure of the multichannel valve group；
Wherein, first check valve is flowed through（7）Hydraulic oil by the first throttle valve（6）Into first converging valve
（2）Control chamber, to control first converging valve（2）Unlatching and closing；And by the main overflow valve（8）Control flows through
First check valve（7）Hydraulic oil maximum pressure, and then control the maximum pressure of the multichannel valve group.
4. the multichannel valve group at three pumps interflow as claimed in claim 3, it is characterised in that control connection also includes among described：
Second throttle（10）With the second check valve（9）, with second converging valve（3）It is connected, it is single flows through described second
To valve（9）Hydraulic oil by the second throttle（10）Into second converging valve（3）Control chamber, it is described to control
Second converging valve（3）Unlatching and closing；And by the main overflow valve（8）Control flows through second check valve（9）Hydraulic pressure
The maximum pressure of oil, and then control the maximum pressure of the multichannel valve group.
5. the multichannel valve group at three pump as claimed in claim 4 interflow, it is characterised in that upper away from described in swing arm connection
Between control one end of connection to offer an oil return opening（P4）, offered in the upper one end away from the middle control connection of dipper connection
Another oil return opening（P3）, and two oil return openings（P3、P4）It is connected with oil return box.
6. the multichannel valve group at the three pumps interflow as described in claim 4 or 5, it is characterised in that auxiliary on swing arm connection
Help oil inlet（PF）It is connected with the control chamber inside swing arm connection；Auxiliary oil inlet on dipper connection（PF）With
Control chamber inside the dipper connection is connected.
7. the multichannel valve group at three pumps interflow as claimed in claim 6, it is characterised in that
Control connection also includes the first by-passing valve among described（1）With the second by-passing valve（4）, wherein, first by-passing valve（1）With
First converging valve（2）, left perform connection and oil return box is connected by oil circuit or petroleum pipeline；
Second by-passing valve（4）With second converging valve（3）, right perform connection and oil return box by oil circuit or oil transportation
Pipe is connected.
8. the multichannel valve group at three pumps interflow as claimed in claim 7, it is characterised in that control connection also includes first among described
Control valve（0）With the second control valve（5）, and first control valve（0）With first converging valve（2）It is connected, described second
Control valve（5）With second converging valve（3）It is connected.
9. the multichannel valve group at three pumps interflow as claimed in claim 8, it is characterised in that the main overflow valve（8）Positive normal pressure
Power be 343bar, boosting when pressure 373bar, the straight line moving control valve（V6）The latus rectum of middle valve element is 40mm.
10. a kind of hydraulic crawler excavator, it is characterised in that there is the multichannel at the three pumps interflow as described in claim any one of 1-8
Valve group.
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| CN201610375318.7A CN105805074B (en) | 2016-05-31 | 2016-05-31 | A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow |
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| CN201610375318.7A CN105805074B (en) | 2016-05-31 | 2016-05-31 | A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow |
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| CN105805074B true CN105805074B (en) | 2017-11-10 |
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| CN106640820A (en) * | 2017-01-22 | 2017-05-10 | 山东常林机械集团股份有限公司 | Multipath control valve |
| CN106836365B (en) * | 2017-03-01 | 2022-12-23 | 江苏恒立液压科技有限公司 | Hydraulic multiplex valve system |
| CN107806320B (en) * | 2017-11-28 | 2023-08-15 | 恒天九五重工有限公司 | Main pump auxiliary pump confluence control system and control method of rotary drilling rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201109915Y (en) * | 2007-11-08 | 2008-09-03 | 张思学 | Three pump fen-confluence fluid-control multi-way valve |
| CN201193334Y (en) * | 2008-05-08 | 2009-02-11 | 三一重机有限公司 | Three-pump confluence control device for dredger |
| CN201547049U (en) * | 2009-11-23 | 2010-08-11 | 石家庄煤矿机械有限责任公司 | High flow multi-pump multi-valve flow collecting system |
| CN201962718U (en) * | 2011-02-22 | 2011-09-07 | 卢宇 | Hydraulic multiway valve |
| JP6242312B2 (en) * | 2014-09-02 | 2017-12-06 | 株式会社日立建機ティエラ | Construction machine hydraulic system |
| JP6226844B2 (en) * | 2014-09-18 | 2017-11-08 | 株式会社日立建機ティエラ | Hydraulic drive unit for construction machinery |
| CN205806056U (en) * | 2016-05-31 | 2016-12-14 | 常熟华威履带有限公司 | The banked direction control valves group at a kind of three pump interflow and hydraulic crawler excavator |
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Inventor after: Yu Xiaochen Inventor after: Liu Zhonghua Inventor after: Lu Aihua Inventor before: Hu Jianjun Inventor before: Liu Zhonghua |
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Effective date of registration: 20171122 Address after: 215500 southeast avenue of Changshu Southeast Economic Development Zone, Suzhou, Jiangsu Patentee after: Suote Transmission Equipment Co., Ltd. Address before: 215500 southeast avenue of Changshu Southeast Economic Development Zone, Suzhou, Jiangsu Patentee before: Changshu Huawei Track Co.,Ltd. |