CN108591147A - Quarry tipper constant pressure determines variable delivery hydraulic system - Google Patents
Quarry tipper constant pressure determines variable delivery hydraulic system Download PDFInfo
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- CN108591147A CN108591147A CN201810312082.1A CN201810312082A CN108591147A CN 108591147 A CN108591147 A CN 108591147A CN 201810312082 A CN201810312082 A CN 201810312082A CN 108591147 A CN108591147 A CN 108591147A
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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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to quarry tipper hydraulic systems, and complicated to solve existing quarry tipper constant-pressure variable system hoisting system control, big problem is impacted in of high cost, elevating ram stroke end；A kind of quarry tipper constant pressure is provided and determines variable delivery hydraulic system comprising electronic control unit, control valve group；Constant pressure pump by control valve group to steering fuel feeding and when lifting operating mode to by control valve group to hoisting system fuel feeding, when elevating ram extend out to lifting stroke end position, control valve group blocks lifting guide's oil circuit and blocks fuel feeding of the constant pressure pump to hoisting system, to reduce hoisting system in the buffering for lifting stroke terminal.In present hydraulic system, hoisting system is simple, reliable, at low cost, and the impact of elevating ram stroke end is effectively controlled.
Description
Technical field
The present invention relates to a kind of hydraulic systems, determine variable delivery hydraulic system more specifically to a kind of quarry tipper constant pressure
System.
Background technology
Existing quarry tipper variable delivery hydraulic system generally has load sensitive system and constant-pressure variable system, variable part
It is generally used for steering, and hoisting system is mostly quantitative system.Lifting hydraulic system often by lifting pump, lifting valve, balanced valve,
The elements such as pilot valve (or electromagnetism handle), Multi-stage cylinder form, and steering hydraulic system is often by steering pump, turning control cell, accumulation of energy
The elements such as device, steering cylinder form.Braking system is made of elements such as brake valve, brake clamp, accumulators.Current majority producers
Mine car is all to use constant-pressure variable system.
Typical constant-pressure variable system principle is as shown above at present, and there are some technical deficiencies：
(1) hoisting system control is complicated, and lifting part is in such a way that electrichydraulic control is combined, control valve and main valve all phases
To complexity, and element is more, high failure rate.
(2) hydraulic oil cooling system is not used, it cannot be guaranteed that suitable working oil temperature.
(3) hoisting system is without hydraulic stop, and only with mechanical position limitation, the impact of oil cylinder stroke terminal is big.
(4) since lifting pilot system is to use solenoid directional control valve control mode, hoisting system is caused to start impact big.
Invention content
It is multiple the technical problem to be solved by the present invention is to be directed to existing quarry tipper constant-pressure variable system hoisting system control
Miscellaneous, big problem is impacted in of high cost, elevating ram stroke end, and provides that a kind of hoisting system is simple, reliable, elevating ram row
The quarry tipper constant pressure that the impact of journey terminal is effectively controlled determines variable delivery hydraulic system.
The present invention is to realize that the technical solution of its purpose is such：A kind of quarry tipper constant pressure is provided and determines variable delivery hydraulic
System, including steering, hoisting system, braking system, constant pressure pump, constant displacement pump, hydraulic oil container, accumulator, electronic control unit, institute
It includes turning control cell and steering cylinder connected to it to state steering；The hoisting system include elevating ram and and its
Lifting valve, the pilot valve of connection；It is characterized by comprising control valve groups；The control valve group has the P2 with external oil circuit connection
Hydraulic fluid port, XP hydraulic fluid ports, C hydraulic fluid ports, T1 hydraulic fluid ports, X2 hydraulic fluid ports, G hydraulic fluid ports, F hydraulic fluid ports, and include interflow switch valve, overflow valve, pilot-controlled switch
Valve and two-bit triplet solenoid valve, the first check valve, the second check valve；First hydraulic fluid port of the two-bit triplet solenoid valve and X2 hydraulic fluid ports
Connection, the second hydraulic fluid port are connect with the hydraulic control end of hydraulic-controlled switch valve and X1 hydraulic fluid ports simultaneously；Third hydraulic fluid port is connect with T1 hydraulic fluid ports；Second oil
Mouth selects a conducting with the first hydraulic fluid port or third hydraulic fluid port；Hydraulic-controlled switch valve be connected to T1 hydraulic fluid ports with collaborate switch valve spring cavity it
Between；The oil inlet end of the interflow switch valve is connect with the oil outlet end of the first check valve (53), and oil outlet end is connect with G hydraulic fluid ports, control
End is connect with oil inlet end, and spring cavity is connect through the first damping hole with oil inlet end；The oil inlet end of first check valve is connect with P2 hydraulic fluid ports；
The oil inlet end of second check valve is connect with P2 hydraulic fluid ports, and oil outlet end is connect and with XP hydraulic fluid ports and C hydraulic fluid ports by connecting line and F simultaneously
Hydraulic fluid port is connected, and the overflow valve is connected between the oil outlet end and T1 hydraulic fluid ports of the second check valve 54；The oil inlet end of the constant pressure pump
It is connected with hydraulic tank, the P2 hydraulic fluid ports connection of oil outlet end and control valve group；The XP hydraulic fluid ports of control valve group are connect with accumulator, C oil
Mouth is connect with turning control cell, and T1 hydraulic fluid ports are connected with hydraulic tank through oil return circuit, the oil outlet interflow of G hydraulic fluid ports and constant displacement pump
It is connect with the lifting valve after connection, F hydraulic fluid ports are connect with braking system, and the oil inlet end of constant displacement pump is connected with hydraulic tank；Guide
Lifting guide's output end of valve and the X2 hydraulic fluid ports of control valve group connect, and the X1 hydraulic fluid ports of control valve group are through the first one-way throttle valve and act
The lifting pilot control end of lift valve connects, falling of the falling guide's output end through the second one-way throttle valve and lifting valve of pilot valve
Pilot control end connects；The automatically controlled end of the two-bit triplet solenoid valve is connect with electronic control unit, and the electronic control unit includes being used for
The detection device for detecting the lifting stroke end position of elevating ram, when the lifting stroke of elevating ram reaches lifting stroke end
The electronic control unit controls the two-bit triplet solenoid valve and is in the working position that the second hydraulic fluid port is connected with third hydraulic fluid port when position.
Further, above-mentioned quarry tipper constant pressure is determined in variable delivery hydraulic system, in the oil return line end of hydraulic oil container
Be provided with hydraulic oil cooling device, the hydraulic oil cooling device include counterbalance valve, for detect hydraulic fluid temperature and with it is described
The temperature sensor and radiating control valve group, radiator of electronic control unit connection, the radiator and the radiating control valve group string
In parallel with the counterbalance valve after connection, the oil outlet end of radiator is connected with hydraulic tank, the oil inlet end of radiating control valve group and oil return
Piping connection, when hydraulic fluid temperature is higher than predetermined value, the electronic control unit controls the radiating control valve group and is on shape
State, when hydraulic fluid temperature is less than predetermined value, the electronic control unit controls the radiating control valve group and is in cut-off state；It is described
The oil return opening of pilot valve is connect with the oil outlet end of the counterbalance valve.
Further, above-mentioned quarry tipper constant pressure is determined in variable delivery hydraulic system, and the radiating control valve group includes second
Two-bit triplet solenoid valve, hydraulic control inserted valve, the second damping hole；The automatically controlled end of the second two-bit triplet solenoid valve and electronic control unit
Connection, the first hydraulic fluid port of the second two-bit triplet solenoid valve are connected to the radiating control valve group through second damping hole
Oil inlet end, the oil outlet that the second hydraulic fluid port is connected to the hydraulic control end of hydraulic control inserted valve, third hydraulic fluid port and hydraulic control inserted valve are all connected to
The oil outlet end of the radiating control valve group, the oil inlet of hydraulic control inserted valve are connected to the oil inlet end of the radiating control valve group.
Further, above-mentioned quarry tipper constant pressure is determined in variable delivery hydraulic system, further includes guide's delivery valve, the guide
The oil inlet end of delivery valve is connected with the E hydraulic fluid ports be connected with XP hydraulic fluid ports in the control valve group, the oil outlet end of guide's delivery valve
It is connect with the oil inlet end of the pilot valve.
Further, above-mentioned quarry tipper constant pressure is determined in variable delivery hydraulic system, and the control valve group further includes fuel outlet valve,
The fuel outlet valve is connected between XP hydraulic fluid ports and T1 hydraulic fluid ports.The fuel outlet valve include electromagnetic switch valve and or manual switch valve, institute
The electromagnetic switch valve stated and or the both ends of manual switch valve connect respectively with XP hydraulic fluid ports with T1 hydraulic fluid ports.
Further, above-mentioned quarry tipper constant pressure is determined in variable delivery hydraulic system, the oil circuit between XP hydraulic fluid ports and F hydraulic fluid ports
On be provided with concatenated third damping hole and the third check valve to F hydraulic fluid port one-way conductions.
Compared with prior art, the present invention the present invention has the following advantages.
(1) control valve group is integrated valve group, it controls the working condition of constant pressure pump, when mine car hydraulic work system is expert at
When vehicle steering situation, constant pressure pump is made to be in variable states, constant pressure pump supplements the required flow of accumulator in real time；When mine car is in
When lifting operating mode, by the control of this valve group, constant pressure pump is in maximum pump discharge state supply hoisting system；Hoisting system is simple,
Reliably, at low cost.
(2) impact that elevating ram stroke end is reduced by the way of combination of electric and hydraulic, when elevating ram reaches regulation
After stroke, at once then cut-out fuel feeding lifts valve rod Hui Zhongwei, the fluid of last lifting pump to constant pressure pump to the fluid of hoisting system
Fuel cut-off to elevating ram, elevating ram terminal there are one the time buffered, reduce impact.
(3) cooling system is by the way of automatically controlling, after hydraulic oil temperature reaches certain temperature, system oil return automatically into
Enter radiator to radiate；When oil temperature is less than a certain range, fluid directly flows back to fuel tank without radiator.
Description of the drawings
Fig. 1 is the schematic diagram that quarry tipper constant pressure of the present invention determines variable delivery hydraulic system.
Fig. 2 is the schematic diagram that quarry tipper constant pressure of the present invention determines control valve group in variable delivery hydraulic system.
Fig. 3 is the schematic diagram that quarry tipper constant pressure of the present invention determines radiating control valve group in variable delivery hydraulic system.
Parts title and serial number in figure：
Hydraulic oil container 1, constant displacement pump 2, constant pressure pump 3, high pressure filter 4, control valve group 5, accumulator 6, turning control cell
7, steering cylinder 8, guide's delivery valve 9, the first one-way throttle valve 10, pilot valve 11, lifting valve 12, the second one-way throttle valve 13,
Balanced valve 14, elevating ram 15, radiating control valve 16, radiator 17, counterbalance valve 18, return filter 19.
Third check valve 51, third damping hole 52, the first check valve 53, the second check valve 54, prefill valve 55, manual switch
Valve 56, electromagnetic switch valve 57, the 4th damping hole 58, hydraulic-controlled switch valve 59, two-bit triplet solenoid valve 510, interflow switch valve 511,
First damping hole 512.
Second damping hole 161, the second two-bit triplet solenoid valve 162, hydraulic control inserted valve 163.
Specific implementation mode
Illustrate specific embodiment below in conjunction with the accompanying drawings.
It is as shown in Figure 1 that quarry tipper constant pressure in the present embodiment determines variable delivery hydraulic system comprising steering, lifting
System, braking system, hydraulic oil container 1, constant displacement pump 2, constant pressure pump 3, high pressure filter 4, control valve group 5, accumulator 6, guide supply
Fuel tap 9, one-way throttle valve 10, pilot valve 11, lifting valve 12, balanced valve 14, elevating ram 15, radiating control valve 16, radiator
17, counterbalance valve 18, return filter 19.
Steering includes turning control cell 7 and steering cylinder connected to it 8；Turning control cell 7 be typically by
Steering gear and flux amplification valve are constituted.
Hoisting system includes elevating ram 15 and lifting valve connected to it 12, pilot valve 11.In lifting valve 12 and lifting
Balanced valve 14 is additionally provided between oil cylinder 15, so that elevating ram stretches steadily in lifting process.
As shown in Fig. 2, control valve group 5 has P2 hydraulic fluid ports, XP hydraulic fluid ports, C hydraulic fluid ports, T1 hydraulic fluid ports, the X2 with external oil circuit connection
Hydraulic fluid port, G hydraulic fluid ports, F hydraulic fluid ports, and include third check valve 51, third damping hole 52, the first check valve 53, the second check valve 54, fill
Liquid valve 5-5, manual switch valve 56, electromagnetic switch valve 57, the 4th damping hole 58, hydraulic-controlled switch valve 59, two-bit triplet solenoid valve
510, collaborate switch valve 511, the first damping hole 512.
First hydraulic fluid port of two-bit triplet solenoid valve 510 is connect with X2 hydraulic fluid ports, the second hydraulic fluid port simultaneously with hydraulic-controlled switch valve 59
Hydraulic control end is connected with X1 hydraulic fluid ports；Third hydraulic fluid port is connect with T1 hydraulic fluid ports；Second hydraulic fluid port and the first hydraulic fluid port or third hydraulic fluid port select a conducting.
Hydraulic-controlled switch valve 59 is connected between T1 hydraulic fluid ports and the spring cavity for collaborating switch valve 511.
The oil inlet end of interflow switch valve 511 is connect with the oil outlet end of the first check valve 53, and oil outlet end is connect with G hydraulic fluid ports, control
End processed is connect with oil inlet end, and spring cavity is connect through the first damping hole 512 with oil inlet end；The oil inlet end of first check valve 53 and P2 oil
Mouth connection.
The oil inlet end of second check valve 54 is connect with P2 hydraulic fluid ports, and oil outlet end is connect with XP hydraulic fluid ports and C hydraulic fluid ports simultaneously.
Overflow valve 55 is connected between the oil outlet end and T1 hydraulic fluid ports of the second check valve 54.
In the oil outlet end of the second check valve 54 to being connected with concatenated third damping hole 52 and third check valve between F hydraulic fluid ports
51.F hydraulic fluid ports connect braking system, to braking system fuel feeding.
It is also associated with fuel outlet valve between XP hydraulic fluid ports and T1 hydraulic fluid ports.Fuel outlet valve includes electromagnetic switch valve 57 and manual switch valve
56, the both ends of electromagnetic switch valve 57 and manual switch valve 56 are connect with XP hydraulic fluid ports with T1 hydraulic fluid ports respectively.In order to drain the oil safely, electromagnetism
Switch valve 57 also connect with the 4th damping hole 58 setting.
The oil inlet end of constant pressure pump 3 is connect with hydraulic oil container 1, and oil outlet end is connect with the P2 hydraulic fluid ports of control valve group 5.
The XP hydraulic fluid ports of control valve group 5 are connect with accumulator 6, and C hydraulic fluid ports are connect with turning control cell 7, and T1 hydraulic fluid ports connect liquid
It is connect with lifting valve 12 after the oil return circuit of pressure oil case 1, G hydraulic fluid ports and the oil outlet interflow connection of constant displacement pump 2, the oil inlet of constant displacement pump
End is connected with hydraulic tank.
The oil inlet end P6 of guide's delivery valve 9 is connect with the E hydraulic fluid ports in control valve group 5, and E hydraulic fluid ports are single with XP hydraulic fluid ports and second
It is connected to the oil outlet end of valve, to obtain pressure oil from accumulator.The oil outlet end P7 of guide's delivery valve and pilot valve into
Oily end P8 connections.
Lifting guide's output end X3 of pilot valve 11 is connect with the X2 hydraulic fluid ports of control valve group 5, the X1 hydraulic fluid ports warp of control valve group 5
First one-way throttle valve 10 is connect with the lifting pilot control end of lifting valve 12, and the falling guide output end of pilot valve is single through second
It is connect to throttle valve 13 with the falling pilot control end of lifting valve.
The automatically controlled end of two-bit triplet solenoid valve 510 is connect with electronic control unit, and electronic control unit includes controller and for detecting
The detection device such as inductive switch or displacement sensor etc. of the lifting stroke end position of elevating ram, when the lifting of elevating ram
Electronic control unit control two-bit triplet solenoid valve 510 is in the second hydraulic fluid port and third hydraulic fluid port when stroke reaches lifting stroke end position
The working position of conducting.
As shown in Figure 1, the oil return line end in hydraulic oil container is provided with hydraulic oil cooling device, hydraulic oil cooling device
Temperature sensor and radiating control valve group 16 including counterbalance valve 18, for detecting hydraulic fluid temperature and being connect with electronic control unit,
Radiator 17, radiator 17 is in parallel with counterbalance valve 18 after connecting with radiating control valve group 16, the oil outlet end and hydraulic pressure of radiator 17
Fuel tank 1 connects, and the oil inlet end of radiating control valve group 16 is connect with oil return line, automatically controlled when hydraulic fluid temperature is higher than predetermined value
Unit control radiating control valve group is in the conduction state, and when hydraulic fluid temperature is less than predetermined value, electronic control unit control is described to be dissipated
Thermal control valve group is in cut-off state.
As shown in figure 3, radiating control valve group 16 includes the second two-bit triplet solenoid valve 162, hydraulic control inserted valve 163, second
Damping hole 161；The automatically controlled end of second two-bit triplet solenoid valve 162 is connect with electronic control unit, and the of the second two-bit triplet solenoid valve
One hydraulic fluid port is connected to the oil inlet end of radiating control valve group 16 through the second damping hole 161, and the second hydraulic fluid port is connected to hydraulic control inserted valve 163
Hydraulic control end, third hydraulic fluid port and hydraulic control inserted valve 163 oil outlet be all connected to the oil outlet end of radiating control valve group 16, hydraulic control is inserted
The oil inlet of dress valve 163 is connected to the oil inlet end of radiating control valve group 16.The oil return opening of pilot valve is fuel-displaced with the counterbalance valve
End connection.
In the present embodiment, when quarry tipper only turns to, lifting guide's output end X3 of pilot valve 11 is without first
Pressure output is led, X2 hydraulic fluid ports do not have pilot pressure input, hydraulic-controlled switch valve 59 not to commutate, and are operated in left position, collaborate switch valve 511
Right chamber pressure and spring cavity pressure it is equal, interflow switch valve 511 be closed, the flow needed for steering is by turning to
The aperture of control unit determines that constant pressure pump 2 is a load sensitive pump, provides the flow needed for steering.
When quarry tipper only lifts, the pilot pressure of lifting guide's output end X3 outputs of pilot valve 11 is through X2 oil
Mouth passes to the hydraulic control end of hydraulic-controlled switch valve 59 by two-bit triplet solenoid valve 510,59 commutation work of hydraulic-controlled switch valve in right position,
So that the pressure of the spring cavity of interflow switch valve 511 is in low-pressure state, interflow switch valve is opened, the P2 hydraulic fluid ports of control valve group
It is communicated with G hydraulic fluid ports, constant pressure pump 3 collaborates to provide pressure oil for lifting valve with constant displacement pump 2, and constant pressure pump is in maximum pump discharge state at this time
Supply hoisting system.When elevating ram gives rise to certain position (the lifting stroke end position of elevating ram), displacement sensor
Detect the position of setting, electromagnet YA1 electric signal of the electronic control unit to two-bit triplet solenoid valve 510 so that two-bit triplet electricity
Magnet valve 510 commutates to upper, and the pilot pressure of the lifting guide's output end X3 output of pilot valve 11 is truncated, hydraulic-controlled switch valve 59
Commutation work is equal to the pressure for the control terminal (right chamber) for collaborating switch valve 511 in left position, the pressure for collaborating the spring cavity of switch valve 511
Power, interflow switch valve 511 are closed.The lifting pilot control end of lifting valve is through X1 hydraulic fluid ports, two-bit triplet solenoid valve
Second hydraulic fluid port and third hydraulic fluid port are connected to hydraulic oil container so that the valve rod Hui Zhongwei of lifting valve, the fluid fuel cut-off of constant displacement pump 2
To elevating ram.Since the pilot control end of lifting valve is connected with the first one-way throttle valve 10 and the second one-way throttle valve 13, because
The valve rod Hui Zhongwei of this lifting valve is that a relatively slow process passes through conjunction in the valve rod of lifting valve completely returns to before position
Stream switch valve 511 first blocks fuel feeding of the constant pressure pump to elevating ram, to reduce impact.
In the present embodiment, temperature sensor detects hydraulic oil temperature automatically, when temperature is less than set temperature, radiating control valve
In the second two-bit triplet solenoid valve be closed (upper), radiating control valve valve be in cut-off position, the T4 of lifting valve 12
The oil return of hydraulic fluid port and the T1 hydraulic fluid ports of control valve group 5 passes through 19 oil return box of counterbalance valve 18 and return filter.When the temperature of hydraulic oil
After reaching set temperature, electromagnet YA3YA2 of the electronic control unit to the second two-bit triplet solenoid valve 152 in radiating control valve 15
Electric signal, the second two-bit triplet solenoid valve 152 commutate to bottom so that hydraulic control inserted valve spring cavity passes through the second two-bit triplet electricity
The spool of magnet valve release, hydraulic control inserted valve 153 moves up, and the oil inlet and outlet of hydraulic control inserted valve is connected, the T4 hydraulic fluid ports of lifting valve 12 and
The oil return of the T1 hydraulic fluid ports of control valve group 5 returns to hydraulic oil container 1 by radiator 16, return filter 19, realizes hydraulic oil oneself
Dynamic heat dissipation.
Claims (7)
1. a kind of quarry tipper constant pressure determines variable delivery hydraulic system, including steering, hoisting system, braking system, constant pressure pump
(3), constant displacement pump (2), hydraulic oil container (1), accumulator (6), electronic control unit, the steering include turning control cell (7)
With steering cylinder connected to it (8)；The hoisting system includes elevating ram (15) and lifting valve connected to it (12), elder generation
Pilot valve (11)；It is characterized by comprising control valve group (5)；
The control valve group (5) has and the P2 hydraulic fluid ports of external oil circuit connection, XP hydraulic fluid ports, C hydraulic fluid ports, T1 hydraulic fluid ports, X2 hydraulic fluid ports, G oil
Mouth, F hydraulic fluid ports, and include interflow switch valve (511), overflow valve (55), hydraulic-controlled switch valve (59) and two-bit triplet solenoid valve
(510), the first check valve (53), the second check valve (54)；
First hydraulic fluid port of the two-bit triplet solenoid valve (510) is connect with X2 hydraulic fluid ports, the second hydraulic fluid port while and hydraulic-controlled switch valve
(59) hydraulic control end is connected with X1 hydraulic fluid ports；Third hydraulic fluid port is connect with T1 hydraulic fluid ports；Second hydraulic fluid port is selected with the first hydraulic fluid port or third hydraulic fluid port
One conducting；
Hydraulic-controlled switch valve (59) is connected between T1 hydraulic fluid ports and the spring cavity for collaborating switch valve (511)；
The oil inlet end of the interflow switch valve (511) is connect with the oil outlet end of the first check valve (53), and oil outlet end connects with G hydraulic fluid ports
It connects, control terminal is connect with oil inlet end, and spring cavity is connect through the first damping hole (512) with oil inlet end；First check valve (53) into
Oily end is connect with P2 hydraulic fluid ports；
The oil inlet end of second check valve (54) is connect with P2 hydraulic fluid ports, and oil outlet end connect with XP hydraulic fluid ports and C hydraulic fluid ports simultaneously and passes through company
It takes over road to be connected with F hydraulic fluid ports, the overflow valve (55) is connected between the oil outlet end and T1 hydraulic fluid ports of the second check valve 54；
The oil inlet end of the constant pressure pump (3) is connect with hydraulic oil container (1), and oil outlet end is connect with the P2 hydraulic fluid ports of control valve group (5)；Control
The XP hydraulic fluid ports of valve group (5) processed are connect with accumulator (6), and C hydraulic fluid ports are connect with turning control cell (7), and T1 hydraulic fluid ports are through oil return circuit
It connect, is connect with the lifting valve (12) after G hydraulic fluid ports and the oil outlet interflow connection of constant displacement pump (2), F oil with hydraulic oil container (1)
Mouth is connect with braking system, and the oil inlet end of constant displacement pump is connected with hydraulic tank；
The lifting guide output end (X3) of pilot valve (11) is connect with the X2 hydraulic fluid ports of control valve group (5), the X1 oil of control valve group (5)
Mouth is connect through the first one-way throttle valve (10) with the lifting pilot control end of lifting valve (12), falling guide's output end of pilot valve
It is connect with the falling pilot control end of lifting valve through the second one-way throttle valve (13)；
The automatically controlled end of the two-bit triplet solenoid valve (510) is connect with electronic control unit, and the electronic control unit includes being lifted for detecting
The detection device of the lifting stroke end position of oil-lifting jar, when the lifting stroke of elevating ram reaches lifting stroke end position
The electronic control unit controls the two-bit triplet solenoid valve and is in the working position that the second hydraulic fluid port is connected with third hydraulic fluid port.
2. quarry tipper constant pressure according to claim 1 determines variable delivery hydraulic system, it is characterised in that in hydraulic oil container
Oil return line end is provided with hydraulic oil cooling device, and the hydraulic oil cooling device includes counterbalance valve (18), for detecting liquid
Pressure oil temperature and temperature sensor and radiating control valve group (16), the radiator (17) being connect with the electronic control unit, it is described to dissipate
Hot device (17) is in parallel with the counterbalance valve (18) after connecting with the radiating control valve group (16), the oil outlet end of radiator (17) with
Hydraulic oil container (1) connects, and the oil inlet end of radiating control valve group (16) is connect with oil return line, when hydraulic fluid temperature is higher than predetermined value
When, the electronic control unit control radiating control valve group is in the conduction state, described when hydraulic fluid temperature is less than predetermined value
Electronic control unit controls the radiating control valve group and is in cut-off state；The oil return opening of the pilot valve is fuel-displaced with the counterbalance valve
End connection.
3. quarry tipper constant pressure according to claim 2 determines variable delivery hydraulic system, it is characterised in that the radiating control
Valve group (16) includes the second two-bit triplet solenoid valve (162), hydraulic control inserted valve (163), the second damping hole (161)；
The automatically controlled end of the second two-bit triplet solenoid valve (162) is connect with electronic control unit, the second two-bit triplet solenoid valve
The first hydraulic fluid port the oil inlet end of the radiating control valve group (16) is connected to through second damping hole (161), the second hydraulic fluid port connects
The oil outlet for being connected to the hydraulic control end of hydraulic control inserted valve (163), third hydraulic fluid port and hydraulic control inserted valve (163) is all connected to the heat dissipation
The oil outlet end of control valve group (16), the oil inlet of hydraulic control inserted valve (163) are connected to the oil inlet of the radiating control valve group (16)
End.
4. quarry tipper constant pressure according to any one of claim 1 to 3 determines variable delivery hydraulic system, it is characterised in that also
Including guide's delivery valve (9), the oil inlet end (P6) of guide's delivery valve (9) be connected with XP hydraulic fluid ports in the control valve group
E hydraulic fluid ports connect, and the oil outlet end (P7) of guide's delivery valve is connect with the oil inlet end (P8) of the pilot valve.
5. quarry tipper constant pressure according to any one of claim 1 to 3 determines variable delivery hydraulic system, it is characterised in that institute
It further includes fuel outlet valve to state control valve group, and the fuel outlet valve is connected between XP hydraulic fluid ports and T1 hydraulic fluid ports.
6. quarry tipper constant pressure according to claim 6 determines variable delivery hydraulic system, it is characterised in that the fuel outlet valve packet
Include electromagnetic switch valve (57) and or manual switch valve (56), the electromagnetic switch valve and or manual switch valve both ends difference
It is connect with XP hydraulic fluid ports with T1 hydraulic fluid ports.
7. quarry tipper constant pressure according to any one of claim 1 to 3 determines variable delivery hydraulic system, it is characterised in that
Concatenated third damping hole (52) and the third list to F hydraulic fluid port one-way conductions are provided on oil circuit between XP hydraulic fluid ports and F hydraulic fluid ports
To valve (51).
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| CN201810312082.1A CN108591147A (en) | 2018-04-09 | 2018-04-09 | Quarry tipper constant pressure determines variable delivery hydraulic system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466398A (en) * | 2018-11-08 | 2019-03-15 | 袁菊花 | The lifting of dumper and compartment linkage |
| CN110439876A (en) * | 2019-09-04 | 2019-11-12 | 辽宁工程技术大学 | A kind of Numeric hydraulic cylinder suitable for rocker arm body |
| CN112012978A (en) * | 2020-08-27 | 2020-12-01 | 广西柳工机械股份有限公司 | Load-sensitive prefill valve, hydraulic system and loader |
| CN112377544A (en) * | 2020-11-20 | 2021-02-19 | 徐州徐工矿业机械有限公司 | Full-working-condition automatic-adjustment electro-hydraulic proportional wet disc brake cooling system and control method |
| CN112392782A (en) * | 2020-11-19 | 2021-02-23 | 徐州徐工矿业机械有限公司 | Steering lifting confluence hydraulic system of mining dump truck |
| EP3800096A1 (en) * | 2019-10-04 | 2021-04-07 | Kabushiki Kaisha Toyota Jidoshokki | Hydraulic system of industrial vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205136238U (en) * | 2015-12-02 | 2016-04-06 | 湖南三一路面机械有限公司 | Pump sending hydraulic system and mobile concrete pump |
| CN205331099U (en) * | 2015-12-30 | 2016-06-22 | 上海金湖挤出设备有限公司 | Platform hydraulic pressure removal buffering controlling means stereotypes in tubular product vacuum |
| CN106274605A (en) * | 2016-08-18 | 2017-01-04 | 广西柳工机械股份有限公司 | Quarry tipper load-sensitive combining hydraulic system |
| CN206092591U (en) * | 2016-10-21 | 2017-04-12 | 中国神华能源股份有限公司 | Oil tank temperature control system |
| CN107165894A (en) * | 2017-07-03 | 2017-09-15 | 山推工程机械股份有限公司 | A kind of Oil-temperature control system and hydraulic system of bulldozer |
| CN107882823A (en) * | 2016-09-30 | 2018-04-06 | 南京梅山冶金发展有限公司 | Overcome the hydraulic control system of the harmful concussion of four-roller crusher oil cylinder |
-
2018
- 2018-04-09 CN CN201810312082.1A patent/CN108591147A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205136238U (en) * | 2015-12-02 | 2016-04-06 | 湖南三一路面机械有限公司 | Pump sending hydraulic system and mobile concrete pump |
| CN205331099U (en) * | 2015-12-30 | 2016-06-22 | 上海金湖挤出设备有限公司 | Platform hydraulic pressure removal buffering controlling means stereotypes in tubular product vacuum |
| CN106274605A (en) * | 2016-08-18 | 2017-01-04 | 广西柳工机械股份有限公司 | Quarry tipper load-sensitive combining hydraulic system |
| CN107882823A (en) * | 2016-09-30 | 2018-04-06 | 南京梅山冶金发展有限公司 | Overcome the hydraulic control system of the harmful concussion of four-roller crusher oil cylinder |
| CN206092591U (en) * | 2016-10-21 | 2017-04-12 | 中国神华能源股份有限公司 | Oil tank temperature control system |
| CN107165894A (en) * | 2017-07-03 | 2017-09-15 | 山推工程机械股份有限公司 | A kind of Oil-temperature control system and hydraulic system of bulldozer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466398A (en) * | 2018-11-08 | 2019-03-15 | 袁菊花 | The lifting of dumper and compartment linkage |
| CN110439876A (en) * | 2019-09-04 | 2019-11-12 | 辽宁工程技术大学 | A kind of Numeric hydraulic cylinder suitable for rocker arm body |
| EP3800096A1 (en) * | 2019-10-04 | 2021-04-07 | Kabushiki Kaisha Toyota Jidoshokki | Hydraulic system of industrial vehicle |
| CN112012978A (en) * | 2020-08-27 | 2020-12-01 | 广西柳工机械股份有限公司 | Load-sensitive prefill valve, hydraulic system and loader |
| CN112392782A (en) * | 2020-11-19 | 2021-02-23 | 徐州徐工矿业机械有限公司 | Steering lifting confluence hydraulic system of mining dump truck |
| CN112377544A (en) * | 2020-11-20 | 2021-02-19 | 徐州徐工矿业机械有限公司 | Full-working-condition automatic-adjustment electro-hydraulic proportional wet disc brake cooling system and control method |
| CN112377544B (en) * | 2020-11-20 | 2022-02-15 | 徐州徐工矿业机械有限公司 | Full-working-condition automatic-adjustment electro-hydraulic proportional wet disc brake cooling system and control method |
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Application publication date: 20180928 |