CN107676322A - A kind of pressure distributor - Google Patents
A kind of pressure distributor Download PDFInfo
- Publication number
- CN107676322A CN107676322A CN201710953734.5A CN201710953734A CN107676322A CN 107676322 A CN107676322 A CN 107676322A CN 201710953734 A CN201710953734 A CN 201710953734A CN 107676322 A CN107676322 A CN 107676322A
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- China
- Prior art keywords
- liquid stream
- delivery outlet
- guide
- magnetic valve
- oil
- Prior art date
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- 239000007788 liquid Substances 0.000 claims abstract description 96
- 239000012530 fluid Substances 0.000 claims abstract description 57
- 239000000446 fuel Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims description 6
- 230000002706 hydrostatic effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000012857 repacking Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 83
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F15B13/022—Flow-dividers; Priority valves
-
- 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
- F15B13/024—Pressure relief valves
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to the repacking of the hydraulic system for excavator, including distributor body and pilot operated directional control valve, distributor body to include:First guide oil input port, the second guide oil input port, guide's oil return delivery outlet, the 3rd hydraulic pressure signal delivery outlet, first flow, second flow channel, third flow channel and the steel ball in the displacement of third flow channel stage casing, steel ball are bonded realization sealing with the circular conical surface enlarging at stage casing both ends.Distributor body also includes liquid stream input pipe, liquid stream efferent duct, the first hydraulic pressure signal delivery outlet, the second hydraulic pressure signal delivery outlet, the first fluid flow tube, the second fluid flow tube, and the liquid stream input port with pilot operated directional control valve, liquid stream delivery outlet, first control oil, correspond and connect with the second control port, the first liquid stream mouth, the second liquid stream mouth respectively.Hydraulic pump is walking mechanism and auxiliary device fuel feeding in turn before the present invention is realized by pilot operated directional control valve, preceding hydraulic pump idle periods is discharged, the effective use of hydraulic pump, accords with the demands of the market before realization.
Description
Technical field
The present invention relates to the repacking of excavator, more particularly to a kind of pressure distributor for excavator repacking.
Background technology
With the continuous development of engineering machinery, people can increase multiple auxiliary devices on board a dredger, make it have a variety of
Function, form special equipment.
The dual oil feed structure of hydraulic pump before and after existing excavator uses, preceding hydraulic pump mainly walked to dipper, revolution, left lateral and
Swing arm fuel feeding, rear hydraulic pump mainly walk fuel feeding to scraper bowl, swing arm, right lateral.Excavator is also equipped with pioneer pump, and major function is to be used for
The variable of hydraulic pump and the valve rod use for making guide oil opening distributing valve.
The fuel feeding of front and rear hydraulic pump is to implement distribution by the original-pack distributor of excavator, distribution mould before original-pack distributor includes
Block and rear distribute module, wherein preceding distribute module is provided with dipper, revolution, left lateral walk with the indispensable high-pressure oil passage delivery outlet such as swing arm,
There is no any standby delivery outlet；Distribute module is except having scraper bowl, swing arm, right lateral the indispensable delivery outlet such as to walk afterwards, is additionally provided with the
One standby delivery outlet and the second standby delivery outlet；Therefore free time, when the left lateral delivery outlet of preceding distribute module is only walked
Hydraulic pressure can be provided for walking mechanism, usually equivalent to leaving unused, utilization rate is low, resource serious waste；Hydraulic pump after another aspect
There are two standby delivery outlets, be only a small number of and small flow auxiliary devices and hydraulic pressure is provided, it is impossible to meet big flow auxiliary device
Hydraulic pressure demand, the auxiliary device that can reequip is limiting big.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided one kind improves excavator hydraulic pressure utilization rate, increase hydraulic end
The pressure distributor of mouth.
To achieve the above object, technical solution of the invention is：
A kind of pressure distributor, the hydraulic system for excavator is reequiped, including distributor body and is installed on distributor body
Pilot operated directional control valve.
Distributor body includes:First guide oil input port, the second guide oil input port, guide's oil return delivery outlet, liquid stream
Input pipe, liquid stream efferent duct, the first fluid flow tube, the second fluid flow tube, the first hydraulic pressure signal delivery outlet, the output of the second hydraulic pressure signal
Mouth, the 3rd hydraulic pressure signal delivery outlet, first flow, second flow channel, third flow channel；First guide oil input port connects through first flow
Pass to the first hydraulic pressure signal delivery outlet；Second guide oil input port is communicated to the second hydraulic pressure signal delivery outlet through second flow channel；The
Third flow channel is connected between one runner and second flow channel；Third flow channel is made up of leading portion, back segment and stage casing, and a steel ball is in stage casing
Horizontal displacement, the end of leading portion, back segment and stage casing connection are designed with circular conical surface enlarging, and ball surfaces are bonded real with circular conical surface enlarging
Now seal；The middle part in stage casing connects with the 3rd hydraulic pressure signal delivery outlet；Also include being used to guide's oil return being drained to guide's oil return
The runner of delivery outlet.
Pilot operated directional control valve includes：First control port, the second control port, liquid stream input port, liquid stream delivery outlet, the first liquid
Head piece, the second liquid stream mouth；When control oil is inputted by the first control port, the first liquid stream mouth is led in liquid stream input port；Control oil by
When second control port inputs, the second liquid stream mouth is led in liquid stream input port；During without control oil input, liquid stream input port, the first liquid
Head piece and the second liquid stream mouth respectively lead to liquid stream delivery outlet.
Liquid stream input pipe one end connects with liquid stream input port, and liquid stream efferent duct one end connects with liquid stream delivery outlet, the first liquid
Pressure signal output connects with the first control port, and the second hydraulic pressure signal delivery outlet connects with the second control port；First liquid stream
Mouth connects with one end of the first fluid flow tube, and the second liquid stream mouth connects with one end of the second fluid flow tube.
First guide oil input port is used to connect with the pioneer pump of excavator, and the second guide oil input port is used for and preceding distribution
One left lateral of module walks the connection of hydraulic pressure signal delivery outlet；Guide's oil return delivery outlet connects with the guide oil recycle bin of excavator；
The other end of liquid stream input pipe is walked delivery outlet with a left lateral of preceding distribute module and connected；The other end of liquid stream efferent duct and excavation
The hydraulic pressure recycle bin connection of machine；3rd hydraulic pressure signal delivery outlet is walked main control valve with a left lateral of preceding distribute module and connected；First
Fluid flow tube is auxiliary device fuel feeding, and the second fluid flow tube is left walking mechanism fuel feeding.
Preferably, the first fluid flow tube leads to the first branch flow passage for being communicated to liquid stream efferent duct, and the first branch flow passage is pacified successively
Equipped with the first hydrostatic sensor and the first overflow valve.
Preferably, in addition to the first magnetic valve, second solenoid valve and the second branch flow passage be arrangeding in parallel and the 3rd tributary
Road；Two magnetic valve tops all connect with the second branch flow passage, are all connected in the middle part of two magnetic valves with the 3rd branch flow passage；First guide
Oily input port is communicated in the middle part of the second branch flow passage, and guide's oil return delivery outlet is communicated in the middle part of the 3rd branch flow passage；First flow and
One magnetic valve bottom is connected, and second flow channel is connected with second solenoid valve bottom.
During the first solenoid valves, the bottom of the first magnetic valve is led on the first magnetic valve top, and guide oil is by the second tributary
The first magnetic valve top that road enters, then first flow is flowed to by the first magnetic valve bottom；When guide's oil return is reclaimed, the first electromagnetism
Valve bottom is led in the middle part of the first magnetic valve, and guide's oil return enters the first magnetic valve bottom by first flow, then by the first magnetic valve
Middle part flows to guide's oil return delivery outlet along the 3rd branch flow passage.
When second solenoid valve is powered, second solenoid valve bottom, the lower section of second solenoid valve are led in the top of second solenoid valve
There is the first redundant hydraulic signal output；When guide's oil return is reclaimed, second solenoid valve bottom is led in the middle part of second solenoid valve, guide
Oil return enters second solenoid valve bottom by the lower section of second flow channel or second solenoid valve, then by second solenoid valve middle part along the 3rd
Runner flows to guide's oil return delivery outlet.
First redundant hydraulic signal output, hydraulic pressure letter is provided for the main control valve of the first standby delivery outlet of rear distribute module
Number.
Preferably, in addition to the 3rd magnetic valve, the 3rd magnetic valve top is located in the middle part of the second branch flow passage and does not separate second
Branch flow passage, the 3rd magnetic valve middle part is positioned at the 3rd branch flow passage and does not separate the 3rd branch flow passage.
During three solenoid valves, the 3rd magnetic valve bottom is led on the 3rd magnetic valve top, has below the 3rd magnetic valve
Second redundant hydraulic delivery outlet；When guide's oil return is reclaimed, the 3rd magnetic valve bottom is led in the middle part of the 3rd magnetic valve, guide's oil return by
The bottom of 3rd magnetic valve enters the 3rd magnetic valve bottom, then by flowing to guide's oil return along the 3rd branch flow passage in the middle part of the 3rd magnetic valve
Delivery outlet.
Preferably, distributor body also includes the 3rd fluid flow tube and the 4th fluid flow tube；One end of 3rd fluid flow tube and the
One standby delivery outlet connection, the other end is directly auxiliary device fuel feeding or to conflux with the first fluid flow tube be auxiliary device fuel feeding again；
The first redundant hydraulic refluxing opening is communicated to through the 4th fluid flow tube in the middle part of 3rd fluid flow tube, the first redundant hydraulic refluxing opening returns with hydraulic pressure
Station connection is received, second pressure sensor and the second overflow valve are installed in the middle part of the 4th fluid flow tube.
Preferably, distributor body, which is provided with, is respectively used to adjust first flow, two regulation dresses of second flow channel pressure
Put, adjusting means stretches into first flow or the bolt of second flow channel including top, and grommet nut, bolt are fixed with the top of bolt
Adjusting nut is set between grommet nut and distributor body.
By using above-mentioned technical scheme, the beneficial effects of the invention are as follows：
1st, hydraulic pump is that walking mechanism and auxiliary device switch fuel feeding before being realized by pilot operated directional control valve, by preceding hydraulic pump idle periods
Discharge, be auxiliary device fuel feeding, the effective use of hydraulic pump before realization, meet the repacking of the more auxiliary devices of excavator, accord with
Close the market demand.
2nd, the mutual not phase of the hydraulic power of the first fluid flow tube of pressure distributor and the first standby delivery outlet of rear distribute module
Close, respective auxiliary device fuel feeding can be stood alone as, can more collaborate so as to be big flow auxiliary device fuel feeding, power can carry
Rise more than 40%.
3rd, be advantageous to simplify the company of excavator hydraulic system together in the present invention also by the guide oil domination set of rear hydraulic pump
Connect.
4th, each port for auxiliary device fuel feeding of the invention all drains branch flow passage, and installs pressure in corresponding branch flow passage
Sensor and overflow valve, the pressure of limitation hydraulic circuit is realized, protect whole system without damage.
Brief description of the drawings
Fig. 1 is the upper right side three-dimensional structure diagram of the present invention；
Fig. 2 is the upward view of the present invention；
Fig. 3 is distributor body top view；
Fig. 4 is the upward view of distributor body；
Fig. 5 is the right view of distributor body C sides, and arrow is the direction of motion that guide oil maintains hydraulic pressure and guide's oil return；
The right view of Fig. 6 distributor body C sides, arrow are electromagnetic valve work, the guide oil direction of motion；
Fig. 7 is the front view of distributor body；
Fig. 8 is the upward view of pilot operated directional control valve；
Fig. 9 is the structural representation of pressure-regulating device；
Main Reference Numerals explanation：（1st, distributor body；101st, the first guide oil input port；102nd, the second guide oil input port；
103rd, guide's oil return delivery outlet；104th, the first hydraulic pressure signal delivery outlet；105th, the second hydraulic pressure signal delivery outlet；106th, the 3rd hydraulic pressure
Signal output；107th, the first redundant hydraulic refluxing opening；108th, the first fluid flow tube；109th, the second fluid flow tube；110th, the 3rd liquid stream
Pipe；111st, the 4th fluid flow tube；112nd, first flow；113rd, second flow channel；114th, third flow channel；116th, the first branch flow passage；117、
Second branch flow passage road；118th, the 3rd branch flow passage；119th, liquid stream input pipe；120th, liquid stream efferent duct；121st, the first redundant hydraulic is believed
Number mouth；122nd, the second redundant hydraulic signal port；2nd, pilot operated directional control valve；X, the first oil-control mouth；Y, the second oil-control mouth；P, liquid stream inputs
Mouthful；T, liquid stream delivery outlet；A, the first liquid stream mouth；B, the second liquid stream mouth；31st, the first magnetic valve；32nd, second solenoid valve；33rd, the 3rd
Magnetic valve；34th, first pressure sensor；35th, second pressure sensor；36th, the first overflow valve；37th, the second overflow valve；38th, steel
Pearl；7th, adjusting means；71st, bolt；72nd, grommet nut；73rd, adjusting nut）.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
It should be noted that the direction term mentioned in the present invention, such as：Upper and lower, front, rear, left and right, top, bottom, it is interior,
Outer grade (in addition to preceding hydraulic pump and rear hydraulic pump), is to be based on orientation shown in the drawings or position relationship, is for only for ease of description
The present invention and simplify description, rather than instruction or imply that signified device or element there must be specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.
Fill part is to process the through hole left in Fig. 3-6, implements to block without substantial function, therefore with sprue.
In addition, the magnetic valve that the present invention refers to（31、32、33）With the unlimited model of pilot operated directional control valve etc., if can realize the present invention relates to
Function.
As shown in figure 1, a kind of pressure distributor, the hydraulic system for excavator is reequiped, including distributor body 1 and liquid
Reversal valve 2 is controlled, pilot operated directional control valve 2 is directly fixed on the top of distributor body 1 by bolt.
As illustrated in figs. 2-7, distributor body 1, including the first guide oil input port 101, the second guide oil input port 102,
Guide's oil return delivery outlet 103, liquid stream input pipe 119, liquid stream efferent duct 120, the first fluid flow tube 108, the second fluid flow tube 109,
One hydraulic pressure signal delivery outlet 104, the second hydraulic pressure signal delivery outlet 105, the 3rd hydraulic pressure signal delivery outlet 106, first flow 112,
Second flow channel 113, third flow channel 114.
First guide oil input port 101 is communicated to the first hydraulic pressure signal delivery outlet 104, first flow through first flow 112
112 reversely lead to guide's oil return delivery outlet 103 through corresponding runner.Second guide oil input port 102 connects through second flow channel 113
To the second hydraulic pressure signal delivery outlet 105, second flow channel 113 reversely leads to guide's oil return delivery outlet 103 through corresponding runner.
Third flow channel 114 is connected between first flow 112 and second flow channel 113.Third flow channel 114 is by leading portion, back segment
Formed with stage casing, for a steel ball 38 in stage casing horizontal displacement, leading portion, the diameter of back segment are both greater than the diameter in stage casing, and leading portion, back segment
The end being connected with stage casing is designed with circular conical surface enlarging, and the surface of steel ball 38 is bonded realization sealing with circular conical surface enlarging, in addition, stage casing
Middle part draw the 3rd hydraulic pressure signal delivery outlet 106（The middle part in stage casing connects with the 3rd hydraulic pressure signal delivery outlet 106）.
As shown in figure 8, pilot operated directional control valve 2 has the first control port X, the second control port Y, liquid stream input port P, liquid stream
Delivery outlet T, the first liquid stream mouth A, the second liquid stream mouth B.The work of the pilot operated directional control valve 2 is specific as follows：Control oil is by the first control
When hydraulic fluid port X is inputted, liquid stream input port P leads to the first liquid stream mouth A；When control oil is inputted by the second control port Y, liquid stream input port
P leads to the second liquid stream mouth B；During without control oil input, liquid stream input port P, the first liquid stream mouth A and the second liquid stream mouth B are respectively led to
Liquid stream delivery outlet T.
When pilot operated directional control valve 2 is installed on 1 top of distributor body, liquid stream input port P is located at directly over liquid stream input pipe 119
And both connections are realized by sealed connections such as sealing rings, liquid stream delivery outlet T is located just at the surface of liquid stream delivery outlet 120
And both connections are realized by sealed connections such as sealing rings, the first oil-control mouth X is located just at the first hydraulic pressure signal delivery outlet 104
Surface and both connections are realized by sealed connections such as sealing rings, the second oil-control mouth Y is located just at the second hydraulic pressure signal
The surface of delivery outlet 105 and pass through the sealed connections such as sealing ring realize both connection.First liquid stream mouth A is located just at first
The surface of fluid flow tube 108 and pass through the sealed connections such as sealing ring realize both connection.Second liquid stream mouth B is located just at second
The surface of fluid flow tube 109 and pass through the sealed connections such as sealing ring realize both connection.The He of first hydraulic pressure signal delivery outlet 104
The bottom of second hydraulic pressure signal delivery outlet 105 is using the sealing such as bolt and sealing ring.
First guide oil input port 101 be used for connect with the pioneer pump of excavator, the second guide oil input port 102 for
One left lateral of preceding distribute module walks the connection of hydraulic pressure signal delivery outlet.The guide oil of guide's oil return delivery outlet 103 and excavator returns
Receive station connection.Liquid stream input pipe 119 is walked delivery outlet with a left lateral of preceding distribute module and connected.Liquid stream efferent duct 120 is with excavating
The hydraulic pressure recycle bin connection of machine.3rd hydraulic pressure signal delivery outlet 106 is walked main control valve with a left lateral of preceding distribute module and connected, i.e.,
Walk main control valve for a left lateral of preceding distribute module hydraulic pressure signal is provided.First fluid flow tube 108 is auxiliary device fuel feeding, the second liquid
Flow tube 109 is walking mechanism fuel feeding.
Specific workflow is as follows：After guide oil is entered by the first guide oil input port 101, a part is along first flow
112 flow through the first hydraulic pressure signal delivery outlet 104, are finally entered by the first control port X in pilot operated directional control valve 2, so as to open liquid
Flow input port P to the first liquid stream mouth A passage；Another part then enters the middle part of third flow channel 114, and it is close to push steel ball 38 to front side
The circular conical surface enlarging of front side is sealed, and guide oil flows to the 3rd hydraulic pressure signal delivery outlet 106 from middle part, distribute module before arrival
Left lateral walks main control valve, so that the left lateral of preceding distribute module walks main control valve unlatching.The hydraulic oil of preceding hydraulic pump is by liquid stream input pipe
After 119 are commutated into pilot operated directional control valve 2, exported by the first fluid flow tube 108, so as to be being supplied for auxiliary device for excavator
Oil.
After guide oil is entered by the second guide oil input port 102, a part flows through the second hydraulic pressure letter along second flow channel 113
Number delivery outlet 105, finally entered by the second control port Y in pilot operated directional control valve 2, so as to open liquid stream input port P to the second liquid
Head piece B passage；Another part then enters the middle part of third flow channel 114, pushes steel ball 38 to rear side sealing front and rear circular conical surface and expands
Mouthful, and guide oil flows to the 3rd hydraulic pressure signal delivery outlet 106 from middle part, and a left lateral of distribute module walks master control before arrival
Valve, so that the left lateral of preceding distribute module walks main control valve unlatching.The hydraulic oil of preceding hydraulic pump enters hydraulic control by liquid stream input pipe 119
After reversal valve 2 is commutated, exported by the second fluid flow tube 109, so as to walking mechanism fuel feeding.Need to be directed to left walking mechanism fuel feeding
It is described further, for example, the second fluid flow tube 109 exports to the front chamber of left walking mechanism, hydraulic oil to be walked by left lateral
The rear chamber of mechanism is back to preceding distribute module；Preceding sub-module DFF Direct Fuel Feed is to the rear chamber of left walking mechanism, and hydraulic oil is by a left side
The front chamber of walking mechanism is back to the second fluid flow tube 109, and the second fluid flow tube 109 is recycled to excavator by liquid stream efferent duct 120
Hydraulic pressure recycle bin, return again to preceding distribute module.
When without control oil input, hydraulic oil is returned pilot operated directional control valve 2 by the first fluid flow tube 108 and the second fluid flow tube 109
Pilot operated directional control valve 2, then it is recycled to hydraulic pressure recycle bin through liquid stream delivery outlet 120 by liquid stream output T.Guide's oil return is then respectively according to first
Runner 112 and second flow channel 113 return, and into corresponding runner, then are recycled to by guide's oil return delivery outlet 103 elder generation of excavator
Oil Guide recycle bin.
In a feasible embodiment, the first fluid flow tube 108 also draws the first branch flow passage 116, and the first branch flow passage 116 connects
To the middle part of liquid stream efferent duct 120, the middle part of the first branch flow passage 116 is sequentially installed with the overflow valve of first pressure sensor 34 and first
36, to realize the pressure for detecting oil circuit, protect whole system without damage.Oil circuit pressure is detected by first pressure sensor 34
Power, when pressure exceedes threshold value, the first overflow valve 36 is opened, and the first branch flow passage 116 turns on.Second fluid flow tube 109 is without connecting pressure
Force snesor and overflow valve, come with pressure detecting mainly due to the walking mechanism oil supply system of excavator in itself and overflow fills
Put.
In another feasible embodiment, as it can be seen in figures 5 and 6, distributor body 1 includes first the 31, second electricity of magnetic valve
Magnet valve 32 and the second branch flow passage 117 be arrangeding in parallel and the 3rd branch flow passage 118.Two magnetic valves（31、32）Top is all with
Two branch flow passages 117 connect, two magnetic valves（31、32）Middle part all connects with the 3rd branch flow passage 118.First guide oil input port
101 are communicated in the middle part of the second branch flow passage 117, and guide's oil return delivery outlet 103 is communicated in 118 in the middle part of the 3rd branch flow passage.First flow
108 are connected with the bottom of the first magnetic valve 31, and second flow channel 109 is connected with the bottom of second solenoid valve 32.
For convenience of control, the 3rd magnetic valve 33 can be also installed between the first magnetic valve 31 and second solenoid valve 32.3rd electricity
The top of magnet valve 33 is located at the middle part of the second branch flow passage 117 and does not separate the second branch flow passage 117, and 33 middle parts of the 3rd magnetic valve are positioned at the
Three tributaries 118 and do not separate the 3rd branch flow passage 118.
Above three magnetic valve（31、32、33）Under any situation, all without by the second branch flow passage 117 and the 3rd tributary
Road 118 separates.First guide oil input port 101 maintains oil condition, and guide oil can flow to two the second branch flow passage 117 is accessible
Side is to maintain default hydraulic pressure.And it is defeated to enter guide oil return of the guide's oil return of the 3rd branch flow passage 118 then without barrier in the middle part of flow direction
Outlet 103.
When first magnetic valve 31 is powered, the bottom of the first magnetic valve 32 is led on the top of the first magnetic valve 31.At this moment, guide
The top of the first magnetic valve 31 that oil is entered by the second branch flow passage 117, then first flow 108 is flowed to by the bottom of the first magnetic valve 31.
When guide's oil return is reclaimed, the middle part of the first magnetic valve 31 is led in the bottom of the first magnetic valve 31, and guide's oil return is entered by first flow 108
The bottom of first magnetic valve 31, then flow to guide's oil return delivery outlet 103 along the 3rd branch flow passage 118 by the middle part of the first magnetic valve 31.
There is the first redundant hydraulic signal output 121 lower section of second solenoid valve 32.When second solenoid valve 32 is powered, second
The bottom of second solenoid valve 32 is led on the top of magnetic valve 32, is rear distribute module so as to form the first redundant hydraulic signal
The main control valve of first standby delivery outlet provides hydraulic pressure signal.When guide's oil return is reclaimed, the second electricity is led in the bottom of second solenoid valve 32
The middle part of magnet valve 32, guide's oil return are entered the bottom of second solenoid valve 32 by the lower section of second flow channel 109 or second solenoid valve 32, then
From the middle part of second solenoid valve 32 along the 3rd branch flow passage stream 118 to guide's oil return delivery outlet 103.
There is the second redundant hydraulic signal output 122 lower section of 3rd magnetic valve 33.When 3rd magnetic valve 33 is powered, the 3rd
The bottom of the 3rd magnetic valve 33 is led on the top of magnetic valve 33, is rear distribute module so as to form the second redundant hydraulic signal
The main control valve of second standby delivery outlet provides hydraulic pressure signal.When guide's oil return is reclaimed, the 3rd electricity is led in the bottom of the 3rd magnetic valve 33
The middle part of magnet valve 32, guide's oil return are entered the bottom of the 3rd magnetic valve 33 by the lower section of the 3rd magnetic valve 33, then by the 3rd magnetic valve
32 middle parts are along the 3rd branch flow passage stream 118 to guide's oil return delivery outlet 103.
In this implementation, also the first standby delivery outlet is introduced in distributor body 1.Specifically, distributor body 1 includes
3rd fluid flow tube 110 and the 4th fluid flow tube 111.One end of 3rd fluid flow tube 110 connects with the first standby delivery outlet, and the other end is
Auxiliary device fuel feeding.The middle part of 3rd fluid flow tube 110 is communicated to the first redundant hydraulic refluxing opening 107 through the 4th fluid flow tube 111, and first
Redundant hydraulic refluxing opening 107 connects with hydraulic pressure recycle bin.Meanwhile the middle part of the 4th fluid flow tube 111 is provided with second pressure sensor
35 and second overflow valve 37, for detecting the hydraulic pressure of the oil circuit, and implement effectively control, protect oil piping system not damage.By
Two pressure sensors 35 detect oil circuit pressure, and when pressure exceedes threshold value, the second overflow valve 37 is opened, and the 4th fluid flow tube 111 turns on.
, can be by collector-shoe gear by the first fluid flow tube when excavator repacking needs to use road big flow auxiliary device
108 and the 3rd fluid flow tube 110 output hydraulic oil merge output, so as to improve hydraulic power, the lifting of hydraulic power reaches 40%
More than, meet market actual demand.
Further, first flow 112, second flow channel 113 are fitted with adjusting means 7.As shown in figure 9, adjusting means 7
First flow 112 or the bolt 71 of second flow channel 113 are stretched into including top, the top of bolt 71 is fixed with grommet nut 72, spiral shell
Bolt 71 is set with adjusting nut 73 between grommet nut 72 and distributor body 1.Rotating adjusting nut 53, adjust screw 71
The depth stretched into, reach the purpose for the pressure for intercepting, adjusting hydraulic pressure signal, improve the flexibility used.
It is above-described, only presently preferred embodiments of the present invention, it is impossible to limit the scope that the present invention is implemented, it is every according to
The equivalent change and decoration that scope of the present invention patent is made, it should all still fall within the range of the present invention covers.
Claims (6)
- A kind of 1. pressure distributor, it is characterised in that：Hydraulic system for excavator is reequiped, including distributor body and installation In the pilot operated directional control valve of distributor body；Distributor body includes:First guide oil input port, the second guide oil input port, guide's oil return delivery outlet, liquid stream input Pipe, liquid stream efferent duct, the first fluid flow tube, the second fluid flow tube, the first hydraulic pressure signal delivery outlet, the second hydraulic pressure signal delivery outlet, Three hydraulic pressure signal delivery outlets, first flow, second flow channel, third flow channel；First guide oil input port is communicated to through first flow First hydraulic pressure signal delivery outlet；Second guide oil input port is communicated to the second hydraulic pressure signal delivery outlet through second flow channel；It is first-class Third flow channel is connected between road and second flow channel；Third flow channel is made up of leading portion, back segment and stage casing, and a steel ball is horizontal in stage casing Displacement, the end of leading portion, back segment and stage casing connection are designed with circular conical surface enlarging, ball surfaces be bonded with circular conical surface enlarging realize it is close Envelope；The middle part in stage casing connects with the 3rd hydraulic pressure signal delivery outlet；Also include being used to guide's oil return being drained to guide's oil return output The runner of mouth；Pilot operated directional control valve includes：First control port, the second control port, liquid stream input port, liquid stream delivery outlet, the first liquid stream Mouth, the second liquid stream mouth；When control oil is inputted by the first control port, the first liquid stream mouth is led in liquid stream input port；Control oil is by the When two control ports input, the second liquid stream mouth is led in liquid stream input port；During without control oil input, liquid stream input port, the first liquid stream Mouth and the second liquid stream mouth respectively lead to liquid stream delivery outlet；Liquid stream input pipe one end connects with liquid stream input port, and liquid stream efferent duct one end connects with liquid stream delivery outlet, the first hydraulic pressure letter Number delivery outlet connects with the first control port, and the second hydraulic pressure signal delivery outlet connects with the second control port；First liquid stream mouth with One end connection of first fluid flow tube, the second liquid stream mouth connect with one end of the second fluid flow tube；First guide oil input port is used to connect with the pioneer pump of excavator, and the second guide oil input port is used for and preceding distribute module A left lateral walk hydraulic pressure signal delivery outlet connection；Guide's oil return delivery outlet connects with the guide oil recycle bin of excavator；Liquid stream The other end of input pipe is walked delivery outlet with a left lateral of preceding distribute module and connected；The other end of liquid stream efferent duct and excavator Hydraulic pressure recycle bin connects；3rd hydraulic pressure signal delivery outlet is walked main control valve with a left lateral of preceding distribute module and connected；First liquid stream It is left walking mechanism fuel feeding to manage as auxiliary device fuel feeding, the second fluid flow tube.
- 2. pressure distributor according to claim 1, it is characterised in that：First fluid flow tube, which is led to, is communicated to liquid stream efferent duct The first branch flow passage, the first branch flow passage is sequentially installed with the first hydrostatic sensor and the first overflow valve.
- 3. pressure distributor according to claim 1, it is characterised in that：Also include the first magnetic valve, second solenoid valve and The second branch flow passage and the 3rd branch flow passage be arrangeding in parallel；Two magnetic valve tops all connect with the second branch flow passage, two magnetic valves Middle part all connects with the 3rd branch flow passage；First guide oil input port is communicated in the middle part of the second branch flow passage, and guide's oil return delivery outlet connects Pass through in the middle part of the 3rd branch flow passage；First flow is connected with the first magnetic valve bottom, and second flow channel is connected with second solenoid valve bottom；During the first solenoid valves, the bottom of the first magnetic valve is led on the first magnetic valve top, and guide oil is entered by the second branch flow passage The the first magnetic valve top entered, then first flow is flowed to by the first magnetic valve bottom；When guide's oil return is reclaimed, under the first magnetic valve Portion is led in the middle part of the first magnetic valve, and guide's oil return enters the first magnetic valve bottom by first flow, then by the middle part of the first magnetic valve Guide's oil return delivery outlet is flowed to along the 3rd branch flow passage；When second solenoid valve is powered, second solenoid valve bottom is led on the top of second solenoid valve, there is the below second solenoid valve One redundant hydraulic signal output；When guide's oil return is reclaimed, second solenoid valve bottom is led in the middle part of second solenoid valve, guide's oil return Second solenoid valve bottom is entered by the lower section of second flow channel or second solenoid valve, then by the middle part of second solenoid valve along the 3rd branch flow passage Flow to guide's oil return delivery outlet；First redundant hydraulic signal output, the main control valve for the first standby delivery outlet of rear distribute module provide hydraulic pressure signal.
- 4. pressure distributor according to claim 3, it is characterised in that：Also include the 3rd magnetic valve, the 3rd magnetic valve top Do not separate in the middle part of the second branch flow passage and the second branch flow passage, positioned at the 3rd branch flow passage and do not separate the 3rd in the middle part of the 3rd magnetic valve Branch flow passage；During three solenoid valves, the 3rd magnetic valve bottom is led on the 3rd magnetic valve top, has second below the 3rd magnetic valve Redundant hydraulic delivery outlet；When guide's oil return is reclaimed, the 3rd magnetic valve bottom is led in the middle part of the 3rd magnetic valve, and guide's oil return is by the 3rd The bottom of magnetic valve enters the 3rd magnetic valve bottom, then by flowing to guide's oil return output along the 3rd branch flow passage in the middle part of the 3rd magnetic valve Mouthful.
- 5. pressure distributor according to claim 3, it is characterised in that：Distributor body also include the 3rd fluid flow tube and 4th fluid flow tube；One end of 3rd fluid flow tube connects with the first standby delivery outlet, the other end directly for auxiliary device fuel feeding or with It is auxiliary device fuel feeding again that first fluid flow tube, which confluxes,；The first reserve liquid is communicated in the middle part of 3rd fluid flow tube through the 4th fluid flow tube to push back Head piece, the first redundant hydraulic refluxing opening connect with hydraulic pressure recycle bin, be provided with the middle part of the 4th fluid flow tube second pressure sensor and Second overflow valve.
- 6. 1 pressure distributor is required according to claim, it is characterised in that：Distributor body, which is provided with, to be respectively used to adjust Two adjusting meanss of first flow, second flow channel pressure, adjusting means include top and stretch into first flow or second flow channel Bolt, grommet nut is fixed with the top of bolt, bolt is set with adjusting nut between grommet nut and distributor body.
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| CN201710953734.5A CN107676322B (en) | 2017-10-13 | 2017-10-13 | Hydraulic distributor |
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| CN201710953734.5A CN107676322B (en) | 2017-10-13 | 2017-10-13 | Hydraulic distributor |
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| CN107676322B CN107676322B (en) | 2024-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748521A (en) * | 2019-10-29 | 2020-02-04 | 大连泰凯工业有限公司 | Controllable high-pressure oil way distribution module |
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| Publication number | Publication date |
|---|---|
| CN107676322B (en) | 2024-04-19 |
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