CN107781126A - Hydraulic pump control valve - Google Patents
Hydraulic pump control valve Download PDFInfo
- Publication number
- CN107781126A CN107781126A CN201711171160.2A CN201711171160A CN107781126A CN 107781126 A CN107781126 A CN 107781126A CN 201711171160 A CN201711171160 A CN 201711171160A CN 107781126 A CN107781126 A CN 107781126A
- Authority
- CN
- China
- Prior art keywords
- valve
- guide rod
- hydraulic pump
- power
- power control
- 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
- 230000004907 flux Effects 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 description 14
- 230000009471 action Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- 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
Abstract
The present invention provides a kind of hydraulic pump control valve, including：Main valve body, the first guide rod, Power Control pilot valve, the second guide rod, valve element, multiple valve pockets, Power Control part, power regulation piece, inverted flux control part and minus flow regulating part；Multiple valve pockets, which are respectively sleeved at the outside wall surface of the first guide rod, Power Control pilot valve, the second guide rod and valve element and are spaced apart respectively with the outside wall surface of the first guide rod, Power Control pilot valve, the second guide rod and valve element, defines gap, and the first guide rod, Power Control pilot valve, the second guide rod and valve element are movable in gap respectively；Power Control part is located at the end face of at least one valve pocket to control the power output of hydraulic pump；Power regulation piece is located at one end of main valve body and at least a portion only supports mounting hole；Minus flow regulating part is located at the other end of valve body.Hydraulic pump control valve according to embodiments of the present invention, it effectively can control and adjust the changes in flow rate of hydraulic pump output fluid and the changed power of hydraulic pump.
Description
Technical field
The present invention relates to hydraulic pump manufacturing technology field, more particularly, to a kind of hydraulic pump control valve.
Background technology
Hydraulic pump control valve is a kind of for controlling oil liquid pressure, flow and the element in direction.Existing hydraulic pump control
When valve works, the guide rod between the push rod of electromagnet and the valve element of control valve, catching phenomenon easily occurs, increases frictional resistance,
Control valve is caused hysteresis characteristic occur.And existing hydraulic pump control valve is complicated, and part is more, and processing cost is higher.
The content of the invention
In view of this, the present invention provides a kind of hydraulic pump control valve.
In order to solve the above technical problems, the present invention uses following technical scheme：
Hydraulic pump control valve according to embodiments of the present invention, including：
Main valve body, chamber is defined in the main valve body, the both ends of the main valve body are respectively equipped with and the chamber
Mounting hole；
First guide rod, first guide rod are located at least a portion difference in the chamber and the first guide rod both ends
Stretch out the mounting hole；
Power Control pilot valve, the Power Control pilot valve are located at one end of the chamber and led along described first
The axial direction of bar is movable；
Second guide rod, second guide rod are connected with the Power Control pilot valve；
Valve element, the valve element are located at the other end of the chamber, and the valve element is provided with and plunger shaft and oil return opening phase mutual conductance
The logical opening and closing for being open and the plunger shaft and the oil return opening being controlled by the valve element；
Multiple valve pockets, multiple valve pockets are respectively sleeved at first guide rod, the Power Control pilot valve, described
The outside wall surface of second guide rod and the valve element and respectively with first guide rod, the Power Control pilot valve, described second
The outside wall surface of guide rod and the valve element is spaced apart and defines gap, first guide rod, the Power Control pilot valve, described
Second guide rod and the valve element are movable in the gap respectively；
Power Control part, the Power Control part are located at the end face of at least one valve pocket to control the output of hydraulic pump
Power；
Power regulation piece, the power regulation piece is located at one end of the main valve body and at least a portion only supports the installation
Hole.
Further, the hydraulic pump control valve also includes adjusting rod, and the adjusting rod is connected with the power regulation piece
And only support one end of the power regulation piece.
Further, the Power Control part includes：
Displacement Feedback spring, the Displacement Feedback spring are located at the end face of the valve pocket corresponding with second guide rod
And along the axially spaced arrangement of second guide rod；
Power Control spring, the Power Control spring are located at the end face of the valve pocket corresponding with second guide rod
And with the Displacement Feedback spring in the axial direction of second guide rod interlaced arrangement.
Further, the power regulation piece is formed as power adjusting spring.
Further, the hydraulic pump control valve also includes：
Inverted flux control part, the inverted flux control part are located at the neighbouring Power Control pilot valve of the main valve body
One end and the inverted flux control part one end tight against the mounting hole；
Minus flow regulating part, the minus flow regulating part be located at the outside of at least a portion inverted flux control part and
It is arranged spaced apart in the axial direction of the inverted flux control part；
Minus flow elder generation guide pin bushing, minus flow elder generation guide pin bushing are set on the minus flow regulating part and in the axle of first guide rod
It is movable upwards.
Further, the inverted flux control part is formed as adjusting screw.
Further, the minus flow regulating part is formed as multiple minus flow regulation springs.
Further, the hydraulic pump control valve also includes minus flow guide set valve body, and the minus flow guide covers valve body
It is located at the upper end of the minus flow regulating part and is connected with the minus flow regulating part.
Further, the hydraulic pump control valve also includes shifting fork member, and the shifting fork member is located at the lower end of the main valve body
And the valve pocket corresponding with first guide rod is connected to drive first guide rod both ends movement to the left and right.
Further, the hydraulic pump control valve also includes two end caps, and two end caps are respectively provided at the main valve
The both ends of body and it is connected respectively with the main valve body with inverted flux control part fixation described and the adjusting rod.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
Hydraulic pump control valve according to embodiments of the present invention, by setting Flow-rate adjustment part and power regulation piece, can effectively it control
The changed power of the changes in flow rate and hydraulic pump of system and regulation hydraulic pump output fluid, and promote valve in the hydraulic pump control valve
First guide rod of core motion is hanging design, reduces the frictional resistance between the first guide rod and main valve body, makes hydraulic pump control
Valve is not allowed catching phenomenon occurs, and the hydraulic pump control valve is simple in construction, and parts are less, and processing cost is relatively low.
Brief description of the drawings
Fig. 1 is the sectional view of the hydraulic pump control valve of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the hydraulic pump control valve of the embodiment of the present invention；
Fig. 3 is the Power Control of hydraulic pump control valve and the schematic diagram of inverted flux control of the embodiment of the present invention.
Reference：
Hydraulic pump control valve 1000；
Main valve body 10；
First guide rod 20；
Power Control pilot valve 30；
Second guide rod 40；
Valve element 50；
Valve pocket 60；
Power Control part 70；Displacement Feedback spring 71；Power Control spring 72；
Power regulation piece 80；
Adjusting rod 90；
Inverted flux control part 100；
Minus flow regulating part 110；
Minus flow elder generation guide pin bushing 120；
Minus flow guide covers valve body 130；
Shifting fork member 140；
End cap 150；
Electromagnetic proportional valve 160.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments.Based on described embodiments of the invention, ordinary skill
The every other embodiment that personnel are obtained, belongs to the scope of protection of the invention.
Hydraulic pump control valve 1000 according to embodiments of the present invention is specifically described below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, hydraulic pump control valve 1000 according to embodiments of the present invention is led including main valve body 10, first
Bar 20, Power Control pilot valve 30, the second guide rod 40, valve element 50, multiple valve pockets 60, Power Control part 70 and power regulation piece
80。
Specifically, chamber is defined in main valve body 10, the both ends of main valve body 10 are respectively equipped with the installation with chamber
Hole, at least a portion that the first guide rod 20 is located in the chamber and both ends of the first guide rod 20 stretch out mounting hole respectively, and Power Control is first
Guide valve core 30 is located at one end of chamber and, second guide rod 40 and Power Control pilot valve movable along the axial direction of the first guide rod 20
30 are connected, and valve element 50 is located at the other end of chamber, and valve element 50 is provided with the opening of plunger shaft and oil return opening mutual conduction and by valve
Core 50 controls the opening and closing of plunger shaft and oil return opening, and it is first that multiple valve pockets 60 are respectively sleeved at the first guide rod 20, Power Control
Guide valve core 30, the outside wall surface of the second guide rod 40 and valve element 50 and respectively with the first guide rod 20, Power Control pilot valve 30, second
The outside wall surface of guide rod 40 and valve element 50 is spaced apart and defines gap, the first guide rod 20, Power Control pilot valve 30, the second guide rod
40 and valve element 50 it is movable in gap respectively, Power Control part 70 is located at the outside wall surface of at least one valve pocket 60 to control hydraulic pressure
The power output of pump, power regulation piece 80 is located at one end of main valve body 10 and at least a portion only supports mounting hole.
In other words, hydraulic pump control valve 1000 according to embodiments of the present invention is mainly by main valve body 10, the first guide rod 20, work(
Rate control pilot valve 30, the second guide rod 40, valve element 50, multiple valve pockets 60, Power Control part 70 and power regulation piece 80 form.
Chamber can be machined with main valve body 10, the both ends of main valve body 10 can be machined with the mounting hole with chamber.First guide rod
20 may be mounted in chamber, and the both ends of the first guide rod 20 can be with two mounting holes at least part of stretching chamber both ends.
First guide rod 20 can use the mounting means vacantly designed in chamber, ensure that the first guide rod 20 can move left and right in chamber
It is dynamic, reduce the friction main force between the first guide rod 20 and main valve body 10, make hydraulic pump control valve 1000 not allow generation clamping stagnation to show
As.
Power Control pilot valve 30 may be mounted at one end of chamber, and Power Control pilot valve 30 can be led first
Movable in the axial direction of bar 20, the second guide rod 40 can be connected with Power Control pilot valve 30, and Power Control pilot valve 30 can
To drive the activity in the axial direction of the first guide rod 20 of the second guide rod 40.
Valve element 50 may be mounted at the other end of chamber, can be machined with valve element 50 and plunger shaft and oil return opening phase mutual conductance
Logical opening, valve element 50 can control the opening and closing of plunger shaft and oil return opening.First guide rod 20, Power Control pilot valve
30th, the outside wall surface of the second guide rod 40 and valve element 50 can be arranged with valve pocket 60 respectively, and valve pocket 60 can be with the first guide rod 20, power
It is spaced apart between the outside wall surface of control pilot valve 30, the second guide rod 40 and valve element 50 and forms gap, ensures the first guide rod 20, work(
Rate control pilot valve 30, the second guide rod 40 and valve element 50 are movable in gap.
Power Control part 70 may be mounted at least one valve pocket 60, and Power Control part 70 can control the defeated of hydraulic pump
Go out power, power regulation piece 80 may be mounted at one end of main valve body 10, and at least a portion of power regulation piece 80 can be supported only
Mounting hole.
Hydraulic pump control valve 1000 according to embodiments of the present invention work original state, hydraulic pump control valve 1000
Principle is as shown in Fig. 2 hydraulic pump control valve 1000 can be connected with electromagnetic proportional valve 160, and be controlled by electromagnetic proportional valve 160
The size of the opening of hydraulic pump control valve 1000 processed.Valve element 50 can be with the presence of Power Control part 70 and power regulation piece 80
In initial equilibrium conditionses, now the pressure of plunger shaft can pass through the opening and oil return opening of valve element 50 and turn on, hydraulic pressure pump startup
When, the swashplate angle of hydraulic pump may be at maximum pump discharge state.
The power control principle of hydraulic pump control valve 1000 is as shown in figure 3, hydraulic pump control valve 1000 can be with electromagnetism ratio
Example valve 160 is connected, and the size of the opening by the control hydraulic pump control valve 1000 of electromagnetic proportional valve 160.With hydraulic pump
Outlet pressure increase, the hydraulic action for acting on Power Control pilot valve 30 also gradually increases, and hydraulic action can
To overcome the active force of Power Control part 70 and power regulation piece 80 and promote Power Control pilot valve 30 to move right, power
Control pilot valve 30 can pass motion to valve element while moving right by corresponding second guide rod 40, the first guide rod 20
50, now the oil circuit of plunger shaft and oil return opening be gradually cut off, the outlet oil circuit of plunger shaft and hydraulic pump progressively turns on, plunger shaft
Pressure start to raise, reduce the swashplate angle of hydraulic pump, the servo piston of hydraulic pump can promote the counter motion of valve pocket 60,
Valve element 50 also can counter motion therewith so that the outlet pressure of the pressure of plunger shaft and hydraulic pump cut off, reach new balance
State, and as the rise of pressure, the discharge capacity of hydraulic pump are gradually reduced, so as to keep the power of hydraulic pump constant.Conversely, work as liquid
When the outlet pressure of press pump declines, the meeting left-hand motion of Power Control pilot valve 30, so that also left-hand moves valve element 50, increase
The discharge capacity of hydraulic pump so that the power of hydraulic pump keeps constant.
Thus, hydraulic pump control valve 1000 according to embodiments of the present invention, by setting Power Control part 70 and power adjusting
Part 80, the changes in flow rate of hydraulic pump output fluid and the changed power of hydraulic pump effectively can be controlled and adjust, and the hydraulic pump
The first guide rod 20 that valve element 50 moves is promoted in control valve 1000 as hanging design, reduce the first guide rod 20 and main valve body 10 it
Between frictional resistance, make hydraulic pump control valve 1000 do not allow occur catching phenomenon.
According to one embodiment of present invention, hydraulic pump control valve 1000 also includes adjusting rod 90.
Specifically, adjusting rod 90 is connected with power regulation piece 80 and only one end to power regulation piece 80.
That is, hydraulic pump control valve 1000 can also include adjusting rod 90.Adjusting rod 90 can and power regulation piece
80 are connected, and one end of adjusting rod 90 can only support one end of power regulation piece 80, effectively improve the feedback of hydraulic pump actual displacement
Precision.
In certain specific embodiments of the invention, Power Control part 70 includes Displacement Feedback spring 71 and Power Control
Spring 72.
Specifically, Displacement Feedback spring 71 is located at the end face of the valve pocket 60 corresponding with the second guide rod 40 and along the second guide rod
40 axially spaced arrangement, Power Control spring 72 are located at the end face of the valve pocket 60 corresponding with the second guide rod 40 and and displacement
The interlaced arrangement in the axial direction of the second guide rod 40 of feedback spring 71.
In other words, Power Control part 70 is mainly made up of Displacement Feedback spring 71 and Power Control spring 72, and displacement is anti-
Feedback spring 71 may be mounted at the end face of the valve pocket 60 corresponding with the second guide rod 40, and Displacement Feedback spring 71 can be led along second
The axially spaced arrangement of bar 40.Power Control spring 72 may be mounted at the end of the valve pocket 60 corresponding with the second guide rod 40
Face, Power Control spring 72 can with Displacement Feedback spring 71 in the axial direction of the second guide rod 40 interlaced arrangement.Displacement Feedback bullet
Spring 71 and Power Control spring 72 can receive the discharge capacity of hydraulic pump feedback, effectively control and regulation hydraulic pump discharge.
According to one embodiment of present invention, power regulation piece 80 is formed as power adjusting spring, and power adjusting spring can
To form different spring forces according to the different oil pressure of hydraulic pump.
In certain specific embodiments of the invention, hydraulic pump control valve 1000 also includes inverted flux control part 100, born
Flow-rate adjustment part 110 and minus flow elder generation guide pin bushing 120.
Specifically, inverted flux control part 100 is located at one end of the neighbouring Power Control pilot valve 30 of main valve body 10 and born
Tight against mounting hole, minus flow regulating part 110 is located at least a portion inverted flux control part 100 for one end of flow control member 100
Outside wall surface and arranged spaced apart in the axial direction of inverted flux control part 100, minus flow elder generation guide pin bushing 120 is set in minus flow regulating part
It is on 110 and movable in the axial direction of the first guide rod 20.
That is, hydraulic pump control valve 1000 can also include inverted flux control part 100 and minus flow regulating part 110.
Inverted flux control part 100 may be mounted at one end of the neighbouring Power Control pilot valve 30 of main valve body 10, inverted flux control part
100 one end can be tight against mounting hole, and minus flow regulating part 110 may be mounted at least a portion inverted flux control part 100
End face, minus flow regulating part 110 can be arranged spaced apart in the axial direction of inverted flux control part 100, on minus flow regulating part 110
Minus flow elder generation guide pin bushing 120 can be installed, minus flow elder generation guide pin bushing 120 can be along the axially activity of the first guide rod 20.
Hydraulic pump control valve 1000 according to embodiments of the present invention in the operating condition, the power of hydraulic pump control valve 1000
Control principle is as shown in figure 3, hydraulic pump control valve 1000 can be connected with electromagnetic proportional valve 160, and pass through electromagnetic proportional valve
The size of the opening of 160 control hydraulic pump control valves 1000.When hydraulic pump control valve 1000 has minus flow guide's feedback pressure,
With the increase of pressure, it is negative that hydraulic action can overcome the active force of minus flow regulating part 110 and power regulation piece 80 to promote
Flow elder generation guide pin bushing 120 moves right.
Minus flow elder generation guide pin bushing 120 can be by valve pocket 60, Power Control pilot valve 30, the second guide rod while moving right
40th, the first guide rod 20 passes motion to valve element 50, and now the oil circuit of plunger shaft and oil return opening is gradually cut off, plunger shaft and liquid
The outlet oil circuit of press pump progressively turns on, and piston cavity pressure starts to raise, and reduces the swashplate angle of hydraulic pump, the servo of hydraulic pump
Piston can promote the counter motion of valve pocket 60, valve element 50 also can counter motion therewith so that the pressure and hydraulic pump of plunger shaft
Outlet pressure cut-out, reach new poised state, discharge capacity reduces regulation and completed.
When hydraulic pump is in a certain displacement condition, with the reduction of pilot pressure, hydraulic action is adjusted less than minus flow
Save making a concerted effort for the spring force of the active force of part 110, Displacement Feedback spring 71 and power adjusting spring, minus flow elder generation guide pin bushing 120 to
Left movement, minus flow elder generation guide pin bushing 120 is to can pass through valve pocket 60, Power Control pilot valve 30, the second guide rod while left movement
40th, the first guide rod 20 passes motion to valve element 50, and now the outlet oil circuit of plunger shaft and hydraulic pump is gradually cut off, plunger shaft
Progressively turned on the oil circuit of oil return opening, piston cavity pressure starts to reduce, and increases the swashplate angle of hydraulic pump, piston can promote
The counter motion of valve pocket 60, valve element 50 also can counter motion therewith so that the oil circuit of the pressure of plunger shaft and oil return opening cut off, reach
To new poised state, discharge capacity increase regulation is completed.
According to one embodiment of present invention, inverted flux control part 100 is formed as adjusting screw, and adjusting screw is easy to pacify
Dress, easy to use, processing cost is relatively low.
In certain specific embodiments of the invention, minus flow regulating part 110 is formed as multiple minus flow regulation springs,
Minus flow regulation spring can form different spring forces according to the different oil pressure of hydraulic pump.
According to one embodiment of present invention, hydraulic pump control valve 1000 also includes minus flow guide set valve body 130.
Specifically, minus flow guide cover valve body 130 be located at minus flow regulating part 110 outside and with minus flow regulating part
110 are connected.
In other words, hydraulic pump control valve 1000 can also include minus flow guide set valve body 130, minus flow guide's sleeving valve
Body 130 may be mounted at the outside of minus flow regulating part 110, and minus flow guide covers valve body 130 can be with minus flow regulating part 110
It is connected.
In certain specific embodiments of the invention, hydraulic pump control valve 1000 also includes shifting fork member 140.
Specifically, shifting fork member 140 be located at main valve body 10 lower end and the valve pocket 60 corresponding with the first guide rod 20 be connected with
Driving the first guide rod 20, both ends are moved to the left and right.
That is, hydraulic pump control valve 1000 can also include shifting fork member 140, shifting fork member 140 may be mounted at main valve
The lower end of body 10, the valve pocket 60 that shifting fork member 140 can be corresponding with the first guide rod 20 is connected, favourable by installing shifting fork member 140
In preferably driving the first guide rod 20, both ends are moved to the left and right.
According to one embodiment of present invention, hydraulic pump control valve 1000 also includes two end caps 150, two end caps 150
It is respectively provided at the both ends of main valve body 10 and is connected respectively with main valve body 10 to fix inverted flux control part 100 and adjusting rod 90.
Sum it up, hydraulic pump control valve 1000 according to embodiments of the present invention, by setting Power Control part 70 and power
Regulating part 80, the changes in flow rate of hydraulic pump output fluid and the changed power of hydraulic pump effectively can be controlled and adjust, and the liquid
The first guide rod 20 that valve element 50 moves is promoted to reduce the first guide rod 20 and main valve body for hanging design in press pump control valve 1000
Frictional resistance between 10, hydraulic pump control valve 1000 is set not allow catching phenomenon, the structure of hydraulic pump control valve 1000 letter occurs
Single, parts are less, and processing cost is relatively low.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. hydraulic pump control valve, it is characterised in that including：Main valve body, chamber is defined in the main valve body, the both ends of the main valve body are respectively equipped with the peace with the chamber Fill hole；First guide rod, at least a portion that first guide rod is located in the chamber and the first guide rod both ends are stretched out respectively The mounting hole；Power Control pilot valve, the Power Control pilot valve are located at one end of the chamber and along first guide rods It is axially movable；Second guide rod, second guide rod are connected with the Power Control pilot valve；Valve element, the valve element are located at the other end of the chamber, and the valve element is provided with and plunger shaft and oil return opening mutual conduction Opening and the opening and closing that the plunger shaft and the oil return opening are controlled by the valve element；Multiple valve pockets, multiple valve pockets are respectively sleeved at first guide rod, the Power Control pilot valve, described second The outside wall surface of guide rod and the valve element and respectively with first guide rod, the Power Control pilot valve, second guide rod It is spaced apart with the outside wall surface of the valve element and defines gap, first guide rod, the Power Control pilot valve, described second Guide rod and the valve element are movable in the gap respectively；Power Control part, the Power Control part are located at the end face of at least one valve pocket to control the power of hydraulic pump；Power regulation piece, the power regulation piece is located at one end of the main valve body and at least a portion only supports the mounting hole.
- 2. hydraulic pump control valve according to claim 1, it is characterised in that also including adjusting rod, the adjusting rod and institute State one end that power regulation piece is connected and only supports the power regulation piece.
- 3. hydraulic pump control valve according to claim 2, it is characterised in that the Power Control part includes：Displacement Feedback spring, the Displacement Feedback spring are located at the end face of the valve pocket corresponding with second guide rod and edge The axially spaced arrangement of second guide rod；Power Control spring, the Power Control spring be located at the end face of the valve pocket corresponding with second guide rod and with Displacement Feedback spring interlaced arrangement in the axial direction of second guide rod.
- 4. hydraulic pump control valve according to claim 3, it is characterised in that the power regulation piece is formed as power adjusting Spring.
- 5. hydraulic pump control valve according to claim 4, it is characterised in that also include：Inverted flux control part, the inverted flux control part are located at the one of the neighbouring Power Control pilot valve of the main valve body Hold and one end of the inverted flux control part is tight against the mounting hole；Minus flow regulating part, the minus flow regulating part are located at the outside of at least a portion inverted flux control part and described It is arranged spaced apart in the axial direction of inverted flux control part；Minus flow elder generation guide pin bushing, minus flow elder generation guide pin bushing are set on the minus flow regulating part and in the axial direction of first guide rod It is movable.
- 6. hydraulic pump control valve according to claim 5, it is characterised in that the inverted flux control part is formed as adjusting spiral shell Nail.
- 7. hydraulic pump control valve according to claim 6, it is characterised in that the minus flow regulating part is formed as multiple negative Flow-rate adjustment spring.
- 8. hydraulic pump control valve according to claim 7, it is characterised in that valve body also is covered including minus flow guide, it is described Minus flow guide covers valve body and is located at the upper end of the minus flow regulating part and is connected with the minus flow regulating part.
- 9. hydraulic pump control valve according to claim 8, it is characterised in that be also located at including shifting fork member, the shifting fork member The lower end of the main valve body and the valve pocket corresponding with first guide rod are connected to drive first guide rod to the left and right Move at both ends.
- 10. hydraulic pump control valve according to claim 9, it is characterised in that also including two end caps, two end caps It is respectively provided at the both ends of the main valve body and is connected respectively with the main valve body with inverted flux control part fixation described and institute State adjusting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171160.2A CN107781126B (en) | 2017-11-22 | 2017-11-22 | Hydraulic pump control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171160.2A CN107781126B (en) | 2017-11-22 | 2017-11-22 | Hydraulic pump control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107781126A true CN107781126A (en) | 2018-03-09 |
| CN107781126B CN107781126B (en) | 2023-12-05 |
Family
ID=61430570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711171160.2A Active CN107781126B (en) | 2017-11-22 | 2017-11-22 | Hydraulic pump control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107781126B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331743A (en) * | 2018-03-16 | 2018-07-27 | 江苏恒立液压科技有限公司 | Hydraulic plunger pumpage and alternating power control mechanism |
| CN110307203A (en) * | 2018-05-09 | 2019-10-08 | 北京理工大学 | A kind of servo variable mechanism of hydraulic pump motor |
| CN114687979A (en) * | 2022-03-21 | 2022-07-01 | 江苏汇智高端工程机械创新中心有限公司 | Plunger pump flow and power control system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040067269A (en) * | 2003-01-22 | 2004-07-30 | 한국기계연구원 | Servo regulator of variable displacement swash plate type piston pump controlled in positive-negative direction |
| CN201836136U (en) * | 2010-10-20 | 2011-05-18 | 山东常林机械集团股份有限公司 | Flow adjusting mechanism of hydraulic pump |
| CN104061143A (en) * | 2013-07-17 | 2014-09-24 | 福州大学 | Negative flow and total power control system applied to axial piston pump |
| WO2014156415A1 (en) * | 2013-03-27 | 2014-10-02 | カヤバ工業株式会社 | Pump control device |
| CN104153419A (en) * | 2014-07-22 | 2014-11-19 | 广西柳工机械股份有限公司 | Power control valve and loader quantitative-variable hydraulic system |
| CN104314784A (en) * | 2014-10-23 | 2015-01-28 | 宁波广天赛克思液压有限公司 | Power control mechanism integrated in housing of hydraulic pump |
| WO2015074167A1 (en) * | 2013-11-20 | 2015-05-28 | 江苏恒立液压有限公司 | Plunger pump power control device and control method thereof |
| CN106438260A (en) * | 2016-11-07 | 2017-02-22 | 江苏恒立液压科技有限公司 | Electric proportional power control mechanism and control mode of hydraulic axial plunger pump |
| CN207437284U (en) * | 2017-11-22 | 2018-06-01 | 江苏恒立液压科技有限公司 | Hydraulic pump control valve |
-
2017
- 2017-11-22 CN CN201711171160.2A patent/CN107781126B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040067269A (en) * | 2003-01-22 | 2004-07-30 | 한국기계연구원 | Servo regulator of variable displacement swash plate type piston pump controlled in positive-negative direction |
| CN201836136U (en) * | 2010-10-20 | 2011-05-18 | 山东常林机械集团股份有限公司 | Flow adjusting mechanism of hydraulic pump |
| WO2014156415A1 (en) * | 2013-03-27 | 2014-10-02 | カヤバ工業株式会社 | Pump control device |
| CN104061143A (en) * | 2013-07-17 | 2014-09-24 | 福州大学 | Negative flow and total power control system applied to axial piston pump |
| WO2015074167A1 (en) * | 2013-11-20 | 2015-05-28 | 江苏恒立液压有限公司 | Plunger pump power control device and control method thereof |
| CN104153419A (en) * | 2014-07-22 | 2014-11-19 | 广西柳工机械股份有限公司 | Power control valve and loader quantitative-variable hydraulic system |
| CN104314784A (en) * | 2014-10-23 | 2015-01-28 | 宁波广天赛克思液压有限公司 | Power control mechanism integrated in housing of hydraulic pump |
| CN106438260A (en) * | 2016-11-07 | 2017-02-22 | 江苏恒立液压科技有限公司 | Electric proportional power control mechanism and control mode of hydraulic axial plunger pump |
| CN207437284U (en) * | 2017-11-22 | 2018-06-01 | 江苏恒立液压科技有限公司 | Hydraulic pump control valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331743A (en) * | 2018-03-16 | 2018-07-27 | 江苏恒立液压科技有限公司 | Hydraulic plunger pumpage and alternating power control mechanism |
| CN110307203A (en) * | 2018-05-09 | 2019-10-08 | 北京理工大学 | A kind of servo variable mechanism of hydraulic pump motor |
| CN110307203B (en) * | 2018-05-09 | 2020-11-10 | 北京理工大学 | Servo variable mechanism for hydraulic pump motor |
| CN114687979A (en) * | 2022-03-21 | 2022-07-01 | 江苏汇智高端工程机械创新中心有限公司 | Plunger pump flow and power control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107781126B (en) | 2023-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107781126A (en) | Hydraulic pump control valve | |
| CN106812857A (en) | The damping valve arrangement that can be adjusted with orifice valve | |
| CN202972081U (en) | Self-operated differential pressure balance valve | |
| CN104487749B (en) | Normal-closed electromagnetic valve | |
| CN207437284U (en) | Hydraulic pump control valve | |
| WO2010122102A1 (en) | Pressure regulator for shock absorber | |
| CN201068843Y (en) | Electrohydraulic load pressure flow control variable plunger pump | |
| CN106762926B (en) | The electrohydraulic controlling mechanism of pressure-adjustable and off-load | |
| CN204099146U (en) | Hydraulic variable displacement pump | |
| CN206801981U (en) | A kind of pump flow stabilizing valve | |
| CN106351902B (en) | Hydraulic axial plunger pump electricity proportional displacement control mechanism | |
| CN106438260A (en) | Electric proportional power control mechanism and control mode of hydraulic axial plunger pump | |
| CN104314784B (en) | A kind of powered controls be integrated in casing of hydraulic pump | |
| CN100408899C (en) | Automatic pressure reducing flow stable valve | |
| CN108331743A (en) | Hydraulic plunger pumpage and alternating power control mechanism | |
| CN202326887U (en) | Valve component for regulating damping of vibration absorber | |
| JP2003035377A (en) | Pneumatic valve | |
| CN107023669B (en) | A kind of ratio pressure solenoid valve | |
| CN206299527U (en) | Hydraulic axial plunger pump electricity proportional power controlling organization | |
| CN112901584B (en) | Electromagnetic proportional valve, flow valve and hydraulic system | |
| CN201517624U (en) | A flow control valve | |
| CN201531476U (en) | Magnetorheological fluid pilot operated type relief valve | |
| CN203131148U (en) | Flow regulating valve | |
| CN207298004U (en) | A kind of Depressure valve | |
| CN208535252U (en) | Low leakage flow proportional control valve and oil pump solenoid valve with the control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |