CN110410377A - A kind of device realizing outside control and high pressure and automatically controlling - Google Patents
A kind of device realizing outside control and high pressure and automatically controlling Download PDFInfo
- Publication number
- CN110410377A CN110410377A CN201910825586.8A CN201910825586A CN110410377A CN 110410377 A CN110410377 A CN 110410377A CN 201910825586 A CN201910825586 A CN 201910825586A CN 110410377 A CN110410377 A CN 110410377A
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- valve core
- oil
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- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of devices realizing outside control and high pressure and automatically controlling, including matrix, blind hole is equipped in matrix, the bottom surface of blind hole is equipped with oil inlet, control valve pocket is equipped in blind hole, it controls and is equipped with control valve core in valve pocket, spool is equipped in control valve core, one end of spool is equipped with spring base, the outside of spring base is equipped with limit base, and external control spring is equipped between spring base and limit base, and the other end of spool stretches out control valve core and extends radially outwardly to form stick harness, stick harness is contacted with the bottom surface of blind hole, and high pressure spring is equipped between stick harness and control valve core；It further include oil return circuit, the first oil circuit, first annular slot, the second oil circuit, high-pressure oil passage and third oil circuit.The present invention has the advantages that existing engineering machinery pressure after sale can be made small and operation is not easily tied.
Description
Technical field
The invention belongs to outside tracked construction equipment field more particularly to a kind of realization for tracked construction equipment
The device that control and high pressure automatically control.
Background technique
In tracked construction equipment, drive engineering machinery walking is motor system, motor used in motor system
For the hydraulic motor of double speed, motor displacement passes through guide's hydraulic control, when motor is connected with the hydraulic outer oil-control of guide, motor
For small displacement, motor output torque is smaller, revolving speed is higher, and engineering machinery is in top gear high-speed starting；When motor and first drain
When the outer oil-control of pressure disconnects, motor is huge discharge, and motor output torque is larger, revolving speed is lower, and it is low that engineering machinery is in low or first gear
Speed starting.Due to the habit of work machine operation personnel, operator, which usually first pushes away control handle, makes motor connect outer oil-control, wishes
Engineering machinery is hoped be in top gear high-speed starting, but when engineering machinery encounters big barrier, the torque that motor exports is smaller can
It can not overcome big barrier obstruction, the oil liquid pressure of motor system will increase, the moment lifts for exporting motor, pressure liter
Up to a certain degree after, the high-pressure overflow valve on motor system may turn on, after the oil liquid pressure of motor system reaches peak, horse
Torque up to output stops being promoted that (torque of motor output at this time is still far smaller than the power that exports under motor huge discharge state
Square), at this point, motor can not rotate, and engineering machinery is not if the torque of motor output still cannot overcome the resistance of big barrier
It can drive, some operators just will mistakenly believe that motor there are failure, may require that producer is reprocessed, to bringing after sale for producer
Very big pressure, other operator not push operation handle disconnect motor and the hydraulic outer oil-control of guide, engineering machinery
In low or first gear, etc. after the more excessive barrier of engineering machinery, then push operation handle, so that engineering machinery is in top gear, make work
The starting of journey mechanical high-speed, but such mode of operation is undoubtedly cumbersome, especially engineering machinery start and stop during the work time
Frequently, frequent shift can undoubtedly make operator be easy fatigue repeatedly.
Therefore, the existing engineering machinery with guide's hydraulic control motor system is existing has that pressure after sale is big and operator
Member holds fatigable defect.
Summary of the invention
The object of the present invention is to provide a kind of devices realizing outside control and high pressure and automatically controlling.The present invention has
It can make the advantages of existing engineering machinery pressure after sale is small and operation is not easily tied.
Technical solution of the present invention: a kind of device realizing outside control and high pressure and automatically controlling, including matrix, in matrix
Equipped with blind hole, the bottom surface of blind hole is equipped with oil inlet, and control valve pocket is equipped in blind hole, control valve core, control are equipped in control valve pocket
Be equipped with spool in spool processed, one end of spool is equipped with spring base, and the outside of spring base is equipped with limit base, spring base and limit base it
Between be equipped with external control spring, the other end of spool stretches out control valve core and simultaneously extends radially outwardly to form stick harness, the bottom of stick harness and blind hole
Face contact is equipped with high pressure spring between stick harness and control valve core；
It further include oil return circuit, one end of oil return circuit passes through matrix, the other end sequentially passes through limit base, spring base and control
Spool processed, the other end of oil return circuit is between stick harness and spool；
The first annular slot for further including the first oil circuit and being set on control valve core circumferential surface, one end of the first oil circuit are set to
On control valve core circumferential surface on the outside of first annular slot, the other end pass through control valve core connect with oil return circuit；
It further include the second oil circuit, high-pressure oil passage and third oil circuit, one end of the second oil circuit passes through matrix, the other end passes through control
Valve pocket processed and the first oil circuit connection, one end of high-pressure oil passage passes through matrix, the other end passes through control valve pocket and first annular slot connects
It connects, one end of third oil circuit passes through matrix, the other end passes through control valve pocket and connect with first annular slot, the other end of third oil circuit
Bottom surface on the inside of first annular slot.
In the device that control and high pressure automatically control outside realization above-mentioned, stepped hole, step are equipped in the limit base
The macropore in hole is set in the macropore of stepped hole towards spring base, the external control spring, and the side wall of stepped hole macropore is equipped with the
One through-hole, interior be equipped with of the aperture of stepped hole adjust screw, adjust screw and be equipped with locking nut.
In the device that control and high pressure automatically control outside realization above-mentioned, the outer peripheral surface of the limit base is equipped with first
Bulge loop, the inside of the first bulge loop are equipped with the sealing ring connecting with matrix.
In the device that control and high pressure automatically control outside realization above-mentioned, one end of the spring base is embedded into control valve
In-core, spring base are equipped with the second bulge loop cooperated with stepped hole macropore, and spring base is equipped with the second through-hole.
In the device that control and high pressure automatically control outside realization above-mentioned, one end diameter of the control valve core close to stick harness
To extension, control valve core is set to be greater than the other end close to spring base close to one end of stick harness, control valve core is close to the end of spring base
Portion is equipped with step, and the side wall of step is equipped with third through-hole, is equipped with and the second oil circuit connection between step and first annular slot
Second annular groove, the second annular groove is interior to be equipped with the fourth hole connecting with oil return circuit, and first oil circuit is by the second annular groove
It is formed with fourth hole.
In the device that control and high pressure automatically control outside realization above-mentioned, control valve core is equipped with close to the end face of stick harness
Recess portion, the high pressure spring are deep into recess portion.
In the device that control and high pressure automatically control outside realization above-mentioned, one end of the spool and spring base screw thread connect
It connects, there are gaps between spool and control valve core.
In the device that control and high pressure automatically control outside realization above-mentioned, the control valve is put on equipped with third annular
Slot, third annular groove is interior to be equipped with the fifth hole connecting with the second annular groove；The side of third annular groove is equipped with fourth annular slot,
The 6th through-hole connecting in the middle part of first annular slot is equipped in fourth annular slot；The side of fourth annular slot is equipped with the 5th annular
Slot, the 5th annular groove is interior to be equipped with the 7th through-hole connecting with first annular slot, and the 7th through-hole and first annular slot are close to stick harness
End connection.
Compared with prior art, it is hydraulic between motor to be series at guide by the present invention.The present invention can be controlled by outside
It is controlled by operation handle, determines the driving status of engineering machinery, when controllers do not push the operation handle of engineering machinery,
Motor is huge discharge, and output torque is big, can make engineering machinery low rate start；When controllers push the operation handle of engineering machinery
When, motor is small displacement, and output torque is small, can make engineering machinery high-speed starting.The present invention can pass through the oil liquid of motor system again
Pressure, which is realized, to be automatically controlled, when controllers push operation handle that engineering machinery is made to be in top gear, if engineering machinery is met
To big barrier, before the oil liquid pressure of motor system rises, high-pressure overflow valve is opened, the present invention can cut automatically motor
It changes huge discharge into, makes to clear the jumps in engineering machinery reality in bottom gear, operator would not think that motor has event
Barrier, not may require that producer is reprocessed, reduces the pressure after sale of producer, after the more excessive barrier of engineering machinery, the present invention
Motor can be automatically switched into small displacement again, the high-speed starting for restoring engineering machinery again does not need operator in the process
Member shifts gears, and operator is easy to happen fatigue.
Therefore, the present invention has the advantages that existing engineering machinery pressure after sale can be made small and operation is not easily tied.
Detailed description of the invention
Fig. 1 is the front view when present invention disconnects first drain.
Fig. 2 is the front view of limit base.
Fig. 3 is the front view of spring base.
Fig. 4 is the front view of control valve core.
Fig. 5 is the front view of spool.
Fig. 6 is the front view for controlling valve pocket.
Fig. 7 is the hydraulic schematic diagram of invention.
Fig. 8 is the front view when present invention accesses outer oil-control and control valve core is not opened also.
Fig. 9 is the front view when present invention accesses outer oil-control and control valve core has been switched on.
The label in accompanying drawing is: 1- matrix, 2- control valve pocket, 3- control valve core, 4- spool, 5- spring base, 6- limit base,
7- external control spring, 8- high pressure spring, the gap 9-, 10- oil inlet, 21- third annular groove, 22- fifth hole, 23- fourth annular
Slot, the 6th through-hole of 24-, the 5th annular groove of 25-, the 7th through-hole of 26-, the first annular slot of 31-, 32- step, 33- third through-hole,
The second annular groove of 34-, 35- fourth hole, 36- recess portion, 41- stick harness, 61- stepped hole, 62- first through hole, 63- adjust screw,
64- locking nut, the first bulge loop of 65-, 66- sealing ring.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of device realizing outside control and high pressure and automatically controlling, as shown in Figure 1, including matrix 1, matrix 1
Interior to be equipped with blind hole, the bottom surface of blind hole is equipped with oil inlet 10, the control valve pocket 2 of tubulose is equipped in blind hole, controls and is equipped in valve pocket 2
The control valve core 3 of tubulose, control valve core 3 is interior to be equipped with spool 4, and one end of spool 4 is equipped with spring base 5, and the outside of spring base 5 (is leaned on
Side at the top of nearly blind hole) it is equipped with limit base 6, external control spring 7, the other end of spool 4 are equipped between spring base 5 and limit base 6
It stretches out control valve core 3 and extends radially outwardly to form stick harness 41, stick harness 41 is contacted with the bottom surface of blind hole, stick harness 41 and control valve core
High pressure spring 8 is equipped between 3；
It further include oil return circuit, one end of oil return circuit passes through matrix 1, the other end sequentially passes through limit base 6, spring base 5
With control valve core 3, the other end of oil return circuit is between stick harness 41 and spool 4；
The first annular slot 31 for further including the first oil circuit and being set on 3 circumferential surface of control valve core, one end of the first oil circuit are set
It is placed on 3 circumferential surface of control valve core of first annular 31 outside of slot (side at the top of blind hole), the other end passes through control valve core 3
It is connect with oil return circuit；
It further include the second oil circuit, high-pressure oil passage and third oil circuit, one end of the second oil circuit passes through matrix 1, the other end passes through
Control valve pocket 2 and the first oil circuit connection, one end of high-pressure oil passage passes through matrix 1, the other end pass through control valve pocket 2 with it is first annular
Slot 31 connects, and one end of third oil circuit passes through matrix 1, the other end passes through control valve pocket 2 and connect with first annular slot 31, third oil
The end that road is connect with first annular slot 31 is close to the bottom surface of first annular 31 inside of slot (close to the side of stick harness 41).
Stepped hole 61 is equipped in the limit base 6, towards spring base 5, the external control spring 7 is arranged the macropore of stepped hole 61
In in the macropore of stepped hole 61, the side wall of 61 macropore of stepped hole is equipped with first through hole 62, is equipped with and adjusts in the aperture of stepped hole 61
Screw 63 is saved, screw 63 is adjusted and is equipped with locking nut 64.
The outer peripheral surface of the limit base 6 is equipped with the first bulge loop 65, and the inside of the first bulge loop 65 is equipped with to be connect with matrix 1
Sealing ring 66.
One end of the spring base 5 is embedded into control valve core 3, and spring base 5, which is equipped with, to be cooperated with 61 macropore of stepped hole
Second bulge loop 51, spring base 5 are equipped with multiple the second through-holes 52 connecting with stepped hole 61, and multiple second through-holes 52 are around spring base
5 axis is uniformly distributed.
The control valve core 3 is radially extended close to one end of stick harness 41, is greater than control valve core 3 close to one end of stick harness 41
Close to the other end of spring base 5, control valve core 3 is equipped with step 32 close to the end of spring base 5, and the side wall of step 32 is equipped with the
Three through-holes 33, third through-hole 33 are communicated with the second through-hole 52, are equipped between step 32 and first annular slot 31 and are connected with the second oil circuit
The second annular groove 34 connect, is equipped with the fourth hole 35 connecting with oil return circuit in the second annular groove 34, first oil circuit by
Second annular groove 34 and fourth hole 35 form.
Control valve core 3 is equipped with recess portion 36 close to the end face of stick harness 41, and the high pressure spring 8 is deep into recess portion 36.
One end of the spool 4 is threadedly coupled with spring base 5, and there are gaps 9 between spool 4 and control valve core 3.
The control valve pocket 2 is equipped with third annular groove 21, is equipped in third annular groove 21 and connect with the second annular groove 34
Fifth hole 22, third annular groove 21 and fifth hole 22 constitute a part of second oil circuit, and the second oil circuit of another part passes through
Matrix 1；The side of third annular groove 21 is equipped with fourth annular slot 23, is equipped in fourth annular slot 23 and first annular 31 middle part of slot
6th through-hole 24 of connection, fourth annular slot 23 and the 6th through-hole 24 constitute a part of high-pressure oil passage, another part high-pressure oil passage
Across matrix 1；The side of fourth annular slot 23 is equipped with the 5th annular groove 25, is equipped with and first annular slot 31 in the 5th annular groove 25
7th through-hole 26 of connection, the 7th through-hole 26 connect with first annular slot 31 close to the end of stick harness 41, the 5th annular groove 25 and
7th through-hole 26 constitutes a part of third oil circuit, and another part third oil circuit passes through matrix 1.
The oil return circuit includes first through hole 62, the macropore of stepped hole 61, the second through-hole 52, third through-hole 33, gap
9。
Use of the invention is series between existing guide's hydraulic control and existing motor system: specific connection type such as Fig. 7
Shown, oil inlet 10 connects the hydraulic fluid port X of guide's hydraulic control, when operator pushes the control handle of engineering machinery, in guide's hydraulic control
Outer oil-control enter oil inlet 10；High-pressure oil passage connects the shuttle valve P in motor system；The flow piston of third oil circuit and motor
The small end C1 connection of N；The big end C2 connection of the flow piston N of second oil circuit and motor；The oil return inlet T of oil return circuit and motor connects
It connects.
Working principle: as shown in Figure 1, operator does not push away control handle, enters oil inlet 10 without outer oil-control, i.e., originally
When inventing obstructed outer oil-control, the high pressure oil of motor system is passed through in matrix 1 through shuttle valve P, and high pressure oil passes sequentially through high-pressure oil passage (stream
Through fourth annular slot 23 and the 6th through-hole 24), first annular slot 31, third oil circuit (flow through the 5th annular groove 25 and the 7th through-hole
26) the small end C1 of flow piston N is reached, flow piston is pushed, and motor is in huge discharge state, engineering machinery low rate start.
After flow piston N is pushed, the oil liquid at the big end C2 of flow piston N successively (flows through 21 He of third annular groove through the second oil circuit
Fifth hole 22), the first oil circuit (flowing through the second annular groove 34 and fourth hole 35), oil return circuit (it is logical to flow through gap 9, third
Hole 33, the second through-hole 52, stepped hole 61 macropore and first through hole 62) and oil return inlet T enter motor.
As shown in figure 8, when that is, the present invention connects outer oil-control, spool 4 is made by outer oil-control when outer oil-control enters oil inlet 10
With overcoming the elastic force of external control spring 7 to move, spool 4 drives control valve core 3 to move along control valve pocket 2 by high pressure spring 8,
Until spring base 5, which touches, adjusts screw 63.Third oil circuit (the 7th through-hole 26) is disconnected with first annular slot 31 at this time, control
Spool 3 processed is in also non-open state, and the second oil circuit (fifth hole 22) is connect with first annular slot 31, the height of motor system
Pressure oil (is flowed through through shuttle valve P, high-pressure oil passage (flowing through fourth annular slot 23 and the 6th through-hole 24), first annular slot 31, the second oil circuit
Fifth hole 22 and third annular groove 21) the big end C2 of flow piston N is entered, flow piston is pushed, and motor is in float
Amount state, engineering machinery high-speed starting.After flow piston N is pushed, the oil liquid at the small end C1 of flow piston N is successively through third
Oil circuit (flowing through the 5th annular groove 25 and the 7th through-hole 26), oil return circuit (flow through gap 9, third through-hole 33, the second through-hole 52,
The macropore and first through hole 62 of stepped hole 61) and oil return inlet T enter motor.
As shown in figure 9, when outer oil-control enters, oil inlet 10, engineering machinery high-speed starting, still engineering machinery encounters nothing
When the barrier that method is crossed, the high pressure oil pressure rise of motor system is leaned on since control valve core 3 is greater than close to one end of stick harness 41
The other end of short round spring abutment 5, there are difference in areas at the both ends of control valve core 3, generate compared with noticeable effort, control valve core 3 is made to overcome height
8 elastic force of pressing spring is mobile to 41 side of stick harness, until first annular slot 31 is connected to third oil circuit (the 7th through-hole 26), at this point,
Control valve core 3 is in beginning state.At this point, spool 4 continues to jail under outer Controlling oil effect in adjusting screw 63, first annular slot
31 and second oil circuit (fifth hole 22) disconnect, high pressure oil passes sequentially through high-pressure oil passage after the shuttle valve P present invention and (flows through Fourth Ring
Shape slot 23 and the 6th through-hole 24), first annular slot 31, third oil circuit (flowing through the 5th annular groove 25 and the 7th through-hole 26) reach stream
The small end C1 of piston N is measured, flow piston is pushed, and motor is in huge discharge state, engineering machinery low rate start.
The present invention connects outer oil-control, when control valve core 3 is in also non-open state, as shown in figure 8, the 7th through-hole 26 is controlled
The end cover of spool 3 processed has initial covering amount, 3 needs of control valve core when which is exactly opening controlling valve core 3
The displacement for overcoming spring 3 mobile, the pressure size of high pressure oil needed for the size of displacement determines opening controlling valve core 3, pine
Open locking nut 64, turning adjusting screw 63 adjust screw 63 and drive control valve core 3 mobile by spring base 5, can be changed initial
The size of covering amount, that is, the pressure size of high pressure oil needed for opening controlling valve core 3 can be changed, can be set by turning adjusting screw 63
Determine the pressure value of required high pressure oil when opening controlling valve core 3.
The pressure value of required high pressure oil can carry out setting and have great importance when opening controlling valve core 3.Firstly, for
Different engineering machinery, engineering machinery weight is lighter, and the pressure value needed is smaller, conversely, needing pressure value bigger.Pressure value can be set
Mean to present invention can be suitably applied to different types of engineering machinery calmly, it is applied widely.Secondly, engineering machinery has two shoes
Band all has motor system on every crawler belt, amounts to two motors, and pressure value can be set with conducive to the consistent of two motor actions
Property, keep engineering machinery or so crawler travel more synchronous, prevents engineering machinery from wandering off.
The present invention makes engineering machinery at any operation (push control handle or do not push operation handle), can be just
Often starting, when top gear starting encounters obstacle can fluid drive torque-variable, with this reduce operator working strength and
Reduce the pressure after sale of producer.
The present invention has the advantages that existing engineering machinery pressure after sale can be made small and operation is not easily tied.
Claims (8)
1. a kind of device realizing outside control and high pressure and automatically controlling, it is characterised in that: including matrix (1), set in matrix (1)
There is blind hole, the bottom surface of blind hole is equipped with oil inlet (10), and control valve pocket (2) is equipped in blind hole, is equipped with control in control valve pocket (2)
Spool (3), control valve core (3) is interior to be equipped with spool (4), and one end of spool (4) is equipped with spring base (5), and spring base is set on the outside of (5)
Have limit base (6), be equipped with external control spring (7) between spring base (5) and limit base (6), the other end of spool (4) stretches out control valve
Core (3) simultaneously extends radially outwardly to be formed stick harness (41), and stick harness (41) is contacted with the bottom surface of blind hole, stick harness (41) and control valve core
(3) high pressure spring (8) are equipped between；
It further include oil return circuit, one end of oil return circuit passes through matrix (1), the other end sequentially passes through limit base (6), spring base
(5) it is located between stick harness (41) and spool (4) with control valve core (3), the other end of oil return circuit；
The first annular slot (31) for further including the first oil circuit and being set on control valve core (3) circumferential surface, one end of the first oil circuit is set
It is placed on control valve core (3) circumferential surface on the outside of first annular slot (31), the other end passes through control valve core (3) and oil return circuit connects
It connects；
It further include the second oil circuit, high-pressure oil passage and third oil circuit, one end of the second oil circuit passes through matrix (1), the other end passes through control
Valve pocket (2) processed and the first oil circuit connection, one end of high-pressure oil passage passes through matrix (1), the other end passes through control valve pocket (2) and first
Annular groove (31) connection, one end of third oil circuit passes through matrix (1), the other end passes through control valve pocket (2) and first annular slot
(31) it connects, bottom surface of the other end of third oil circuit on the inside of first annular slot (31).
2. the device that control and high pressure automatically control outside realization according to claim 1, it is characterised in that: the limit
Stepped hole (61) are equipped in seat (6), for the macropore of stepped hole (61) towards spring base (5), the external control spring (7) is set to step
In the macropore in hole (61), the side wall of stepped hole (61) macropore is equipped with first through hole (62), is equipped in the aperture of stepped hole (61)
It adjusts screw (63), adjusts screw (63) and be equipped with locking nut (64).
3. the device that control and high pressure automatically control outside realization according to claim 2, it is characterised in that: the limit
The outer peripheral surface of seat (6) is equipped with the first bulge loop (65), and the inside of the first bulge loop (65) is equipped with the sealing ring connecting with matrix (1)
(66)。
4. the device that control and high pressure automatically control outside realization according to claim 2, it is characterised in that: the spring
One end of seat (5) is embedded into control valve core (3), and spring base (5) is equipped with the second bulge loop cooperated with stepped hole (61) macropore
(51), spring base (5) is equipped with the second through-hole (52).
5. the device that control and high pressure automatically control outside realization according to claim 1, it is characterised in that: the control
Spool (3) is radially extended close to the one end of stick harness (41), is greater than control valve core (3) close to spring close to the one end of stick harness (41)
The other end of seat (5), control valve core (3) are equipped with step (32) close to the end of spring base (5), and the side wall of step (32) is equipped with
Third through-hole (33) is equipped with the second annular groove (34) with the second oil circuit connection between step (32) and first annular slot (31),
The fourth hole (35) connecting with oil return circuit is equipped in second annular groove (34), first oil circuit is by the second annular groove (34)
It is formed with fourth hole (35).
6. the device that control and high pressure automatically control outside realization according to claim 5, it is characterised in that: control valve core
(3) end face close to stick harness (41) is equipped with recess portion (36), and the high pressure spring (8) is deep into recess portion (36).
7. the device that control and high pressure automatically control outside realization according to claim 1, it is characterised in that: the spool
(4) one end is threadedly coupled with spring base (5), and there are gap (9) between spool (4) and control valve core (3).
8. the device that control and high pressure automatically control outside realization according to claim 1, it is characterised in that: the control
Valve pocket (2) is equipped with third annular groove (21), and it is logical that the 5th connect with the second annular groove (34) is equipped in third annular groove (21)
Hole (22)；The side of third annular groove (21) is equipped with fourth annular slot (23), be equipped in fourth annular slot (23) with it is first annular
The 6th through-hole (24) connected in the middle part of slot (31)；The side of fourth annular slot (23) is equipped with the 5th annular groove (25), the 5th annular
The 7th through-hole (26) connecting with first annular slot (31) is equipped in slot (25), the 7th through-hole (26) is leaned on first annular slot (31)
The end connection of nearly stick harness (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825586.8A CN110410377B (en) | 2019-09-03 | 2019-09-03 | Device for realizing external control and high-voltage automatic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910825586.8A CN110410377B (en) | 2019-09-03 | 2019-09-03 | Device for realizing external control and high-voltage automatic control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410377A true CN110410377A (en) | 2019-11-05 |
| CN110410377B CN110410377B (en) | 2024-05-24 |
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ID=68369776
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| CN201910825586.8A Active CN110410377B (en) | 2019-09-03 | 2019-09-03 | Device for realizing external control and high-voltage automatic control |
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| CN (1) | CN110410377B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943751A (en) * | 2021-02-02 | 2021-06-11 | 上海三一重机股份有限公司 | Auxiliary work control method, auxiliary work control device, electronic equipment and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464977A (en) * | 1980-11-12 | 1984-08-14 | Brundage Robert W | Fluid pressure device |
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| CN210565431U (en) * | 2019-09-03 | 2020-05-19 | 力源液压（苏州）有限公司 | Device for realizing external control and high-voltage automatic control |
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| US4464977A (en) * | 1980-11-12 | 1984-08-14 | Brundage Robert W | Fluid pressure device |
| CN102192204A (en) * | 2011-03-29 | 2011-09-21 | 宋建安 | Hydraulic speed control system |
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| CN104500480A (en) * | 2014-12-29 | 2015-04-08 | 中航力源液压股份有限公司 | High-pressure automatic variable control method with hydraulic overload and control valve device |
| JP2017026085A (en) * | 2015-07-24 | 2017-02-02 | 日立建機株式会社 | Hydraulic control device of work machine |
| CN108412830A (en) * | 2018-05-04 | 2018-08-17 | 青岛力克川液压机械有限公司 | A kind of hydraulic motor automatic variable valve |
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| CN108691842A (en) * | 2018-07-21 | 2018-10-23 | 佛山信卓派思机械科技有限公司 | A kind of motor brake control valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112943751A (en) * | 2021-02-02 | 2021-06-11 | 上海三一重机股份有限公司 | Auxiliary work control method, auxiliary work control device, electronic equipment and storage medium |
| CN112943751B (en) * | 2021-02-02 | 2023-08-15 | 上海三一重机股份有限公司 | Auxiliary job control method, device, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN110410377B (en) | 2024-05-24 |
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