CN110843904A - Integrated steering and braking control system of large electric wheel dumper - Google Patents
Integrated steering and braking control system of large electric wheel dumper Download PDFInfo
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- CN110843904A CN110843904A CN201911115579.5A CN201911115579A CN110843904A CN 110843904 A CN110843904 A CN 110843904A CN 201911115579 A CN201911115579 A CN 201911115579A CN 110843904 A CN110843904 A CN 110843904A
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- 239000003921 oil Substances 0.000 claims description 401
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- 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
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- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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- 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
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The integrated steering and braking control system of the large-scale electric wheel dumper comprises an oil tank, a pressure oil source and a steering and braking control integrated valve bank which are communicated through an oil path block, wherein the pressure oil source is used as a control power source of the whole integrated steering and braking control system of the electric wheel dumper. The invention selects a special integrated steering and braking control system integrated by standard and general hydraulic components, the components are arranged in a centralized way, the integration degree is high, the occupied space is small, the pipelines are few, and the maintenance is convenient; the control system is simple to operate, powerful in function, high in automation control degree, perfect in action interlocking relation and high in safety performance, is suitable for pressure building, control and protection of a normal-pressure steering and braking control loop of large-scale mine dump truck equipment, and can also be used as a pressure building, control and protection system of a normal-pressure loop of other equipment.
Description
Technical Field
The invention relates to a vehicle steering and braking control system, in particular to an integrated steering and braking control system of an electric wheel dumper.
Background
At present, only countries in the world, such as America, Russia, China, Germany, Japan and the like, can produce the large-tonnage electric wheel mine transport vehicle. A hydraulic steering and braking control system of an electric wheel mine transport vehicle is one of core technologies of the electric wheel transport vehicle. Most of hydraulic steering and braking control systems of the existing similar products adopt a traditional control mode of discrete elements, namely, the hydraulic steering and braking control systems are composed of a plurality of discrete elements or small plug-in valve groups, and have the defects of low system integration degree, more pipeline connection interfaces, large occupied space for arrangement, high failure rate, poor working reliability, high cost and the like.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the integrated steering and braking control system of the large-scale electric wheel dumper, which has the advantages of high integration level, compact structure, low failure rate, high reliability and simple structure. .
The technical scheme for solving the technical problems is that the integrated steering and braking control system of the large-scale electric wheel dumper comprises an oil tank, a pressure oil source and a steering and braking control integrated valve group which are communicated through an oil path block, wherein the pressure oil source is used as a control power source of the whole integrated steering and braking control system of the electric wheel dumper.
Furthermore, the steering and braking control integrated valve set comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a first throttle valve, a second throttle valve, an unloading valve, a first logic cartridge valve, a second logic cartridge valve, a first overflow valve, a second overflow valve, a discharge electromagnetic valve and a hydraulic control one-way valve which are inserted in the oil path block.
Furthermore, a first oil inlet, a second oil inlet, a first oil return port, a second oil return port, a third oil return port, a fourth oil return port, a first working oil port, a second working oil port, a first energy accumulator oil inlet, a second energy accumulator oil inlet and a pressure test port are arranged on the oil path block; the hydraulic system comprises a hydraulic oil source, a hydraulic oil circuit block, a hydraulic oil.
Further, a first main working oil way, a second main working oil way, a first pilot oil way, a second pilot oil way, a first control oil way, a second control oil way, a first protection oil way, a second protection oil way and a pressure relief loop are arranged in the oil way block; the first oil inlet is communicated to a steering control valve of a steering and braking control circuit of the large-scale electric wheel dumper through a first main working oil way, a first one-way valve, a second energy accumulator, a third one-way valve, the first energy accumulator, a fourth one-way valve and a first working oil port of an oil way block; a first oil inlet of the oil path block is communicated to a control oil port of the unloading valve through a first oil return path, a first control oil path and a third throttle valve.
A first oil inlet of the oil path block is communicated to an oil tank through a first oil return path, a main valve core of a first two-way logic cartridge valve and a second oil return port; a first oil inlet of the oil path block is communicated to the oil tank through a first oil return path, a first pilot oil path, a control oil port of the first two-way logic cartridge valve, a second pilot oil path, an oil inlet of the unloading valve, an oil outlet of the unloading valve and a first oil return port; and a fourth oil return port of the oil path block is communicated to the oil tank through a second oil return path, a hydraulic control one-way valve and a first oil return port, and the fourth oil return port is communicated with a steering control valve of a steering and braking control loop of the large-scale electric wheel dumper.
Further, the first throttle valve is arranged on the first control oil path, the second throttle valve is arranged on the second pilot oil path, and the third throttle valve is arranged on the first pilot oil path.
Further, a first protection oil way and a second main working oil way are arranged on a first main working oil way of the oil way block, and the first protection oil way is connected to a second oil return oil way through a first working oil way and a first overflow valve; the second main working oil way is communicated to a brake control valve of the brake control loop of the large-scale electric wheel dumper through the first main working oil way, the second one-way valve and a second working oil port of the oil way block.
Further, a supplementary oil path, a pressure relief oil path and a second control oil path are arranged on the first main working oil path, and the supplementary oil path is communicated to a steering control valve of a steering and braking control loop of the large-scale electric wheel dump truck through a first main working oil path, a second one-way valve, an oil inlet of a second two-way logic valve, a working oil port of the second two-way logic valve and a first working oil port of an oil path block; the pressure relief oil way is connected to the oil return oil way through the first main working oil way and the pressure relief solenoid valve; the second control oil path is connected to a control port of the hydraulic control check valve through the first main working oil path.
And a second protection oil way is arranged on the second oil return way and is connected to the second oil return way through the second oil return way, an oil inlet of the second overflow valve and an oil outlet of the second overflow valve.
Furthermore, the oil path block is provided with a second oil inlet and a third oil return port which are respectively connected with the first working oil path and the second oil return path.
Further, the oil path block is also provided with a pressure measuring port, and the position of the pressure measuring port is arranged between the first check valve and the third check valve on the first main working oil path.
The invention selects standard general hydraulic components to integrate the steering and braking control system of the electric wheel dumper, and the components are arranged in a centralized way, so that the invention has the advantages of high integration degree, less pipelines, simple structure, small occupied space and convenient maintenance; simple operation, powerful functions, high automation control degree, perfect action interlocking relation and high safety performance. The normal pressure type steering and braking control system is suitable for pressure building, control and protection of a normal pressure type steering and braking control loop of large-scale mine dump truck equipment, and can also be used as a pressure building, control and protection system of a normal pressure type loop of other equipment.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a hydraulic schematic diagram of an integrated steering and braking control valve assembly according to an embodiment of the present invention;
FIG. 3(a) is a front view of an integrated steering and braking control valve assembly according to an embodiment of the present invention;
FIG. 3(b) is a bottom view of an integrated steering and braking control valve assembly according to an embodiment of the present invention;
fig. 3(c) is a right side view of an integrated steering and braking control valve assembly according to an embodiment of the present invention.
In the figure: 1. an oil circuit block; 2.1, a first one-way valve; 2.2, a second one-way valve; 2.3, a third one-way valve; 2.4, a fourth one-way valve; 3.1, a first throttling valve; 3.2, a second throttling valve; 4. An unloading valve; 5.1, a first logic cartridge valve; 5.2, a second logic cartridge valve; 6.1, a first overflow valve; 6.2, a second overflow valve; 7. a bleed-off solenoid valve; 8. a hydraulic control check valve; 9.1, a first accumulator; 9.2, a second accumulator; p, a pressure oil source; p1, a first oil inlet of the oil circuit block; p2 and a second oil inlet of the oil circuit block; t1, a first oil return port; t2, second oil return port; t3, third oil return; t4, fourth oil return port; a1, a first working oil port; a2 and a second working oil port; ACCUM1, a first accumulator charge and discharge port; ACCUM2, a second accumulator charging and discharging oil port; m, a pressure measuring port; GL1, a first main working oil path; GL2, a second main working oil path; HL1, a first oil return way; HL2, a second oil return way; DL1, a first pilot oil passage; DL2, a second pilot oil way, a KL1, a first control oil way, a KL2, a second control oil way, a BL1 and a first protection oil way; BL2, a second protection oil path; YL1, make-up loop, XL1, pressure relief loop.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to the attached drawings 1-2, the electric wheel dump truck comprises an oil tank 10, a pressure oil source P and a steering and braking control integrated valve group which are communicated through an oil path block 1, wherein the pressure oil source is used as a control power source of the whole electric wheel dump truck integrated steering and braking control system. The pressure oil source P is an oil pump.
Referring to fig. 3(a), 3(b), and 3(c), the steering and braking control integrated valve set includes a first check valve 2.1, a second check valve 2.2, a third check valve 2.3, a fourth check valve 2.4, a first throttle valve 3.1, a second throttle valve 3.2, an unloading valve 4, a first logic cartridge valve 5.1, a second logic cartridge valve 5.2, a first overflow valve 6.1, a second overflow valve 6.2, a discharge solenoid valve 7, and a hydraulic control check valve 8, which are inserted into the oil path block 1.
The oil circuit block 1 is provided with a first oil inlet P1 of the oil circuit block, a second oil inlet P2 of the oil circuit block, a first oil return port T1, a second oil return port T2, a third oil return port T3, a fourth oil return port T4, a first working oil port A1, a second working oil port A2, a first energy accumulator pressure charging and releasing oil port ACCUM1, a second energy accumulator pressure charging and releasing oil port ACCUM2 and a pressure measuring port M. The pressure oil source P is connected with an oil inlet P1 of the oil path block 1, oil return ports T1 and T2 of the oil path block 1 are connected with an oil tank 10, a first working oil port A1 and a fourth oil return port T4 of the oil path block 1 are respectively connected with an oil inlet and an oil return port of a steering control valve 11 of a steering and braking control loop of the large-scale electric wheel dumper, a second working oil port A2 of the oil path block 1 is connected with a braking control valve 12 of the large-scale electric wheel dumper, a second oil inlet P2 and a third oil return port T3 of the oil path block 1 are respectively connected with an oil supply port and an oil return port of external auxiliary power equipment, a first energy accumulator pressure charging and releasing oil port ACCUM1 is connected with an energy accumulator 9.1, a second energy accumulator pressure charging and releasing oil port ACCUM2 is connected with an energy accumulator 9.2, and a pressure measuring oil port M is connected with an external pressure.
A first main working oil path GL1, a second main working oil path GL2, a first pilot oil path DL1, a second pilot oil path DL2, a first control oil path KL1, a second control oil path KL2, a first pilot oil path DL1, a second pilot oil path DL2, a first protection oil path BL1, a second protection oil path BL2, a pressure relief loop XL, a first oil return path HL1 and a second oil return path HL2 are arranged in the oil path block 1; a first oil inlet P1 of the valve block is connected to a steering control valve 11 of a steering and braking control circuit of the large-scale electric wheel dumper through a first main working oil way GL1, a first one-way valve 2.1, a second energy accumulator 9.2, a third one-way valve 2.3, a first energy accumulator 9.1, a fourth one-way valve 2.4 and a first working oil port A1 of the oil path block 1; a first oil inlet of the oil path block is connected to a control oil port of the unloading valve 4 through a first oil return path HL1, a first control oil path KL1 and a third throttle valve 3.3. A first oil inlet P1 of the oil path block is connected to the oil tank 10 through a first oil return path HL1, a main valve core of a first two-way logic cartridge valve 5.1 and a second oil return port T2; a first oil inlet P1 of the oil circuit block is connected to the oil tank 10 through a first oil return oil circuit HL1, a first pilot oil circuit DL1, a control oil port of a first two-way logic cartridge valve 5.1, a second pilot oil circuit DL2, an oil inlet of the unloading valve 4, an oil outlet of the unloading valve 4 and a first oil return port HL 1; the fourth oil return port T4 of the oil path block is connected to the oil tank 10 through a second oil return path HL1, a hydraulic control one-way valve 8 and a first oil return port T1, and the fourth oil return port T4 is connected to a steering control valve 11 of a steering and braking control loop of the large-scale electric wheel dumper. The first throttle 3.1 is provided in the first control oil passage KL1, the second throttle 3.2 is provided in the second pilot oil passage DL2, and the third throttle 3.3 is provided in the first pilot oil passage DL 1.
First throttle 3.1 is provided in first control oil passage KL1, second throttle 3.2 is provided in second pilot oil passage DL2, and third throttle 3.3 is provided in first pilot oil passage DL 1.
The first main working oil path GL1 of the oil path block 1 is provided with a first protection oil path BL1, and the oil path is connected to a second oil return path T2 through a first main working oil path BL1 and a first overflow valve 6.1.
The first main working oil path GL1 of the oil path block 1 is provided with a second main working oil path GL2, and the oil path is connected to a brake control valve 12 of a brake control circuit of the large-sized electric wheel dumper through the first main working oil path GL1, a second one-way valve 2.2 and a second working oil port A2 of the oil path block.
And a supplementary oil path YL1 is arranged on the first main working oil path of the oil path block 1, and the oil path is connected to a steering control valve of a steering and braking control loop of the large-scale electric wheel dumper through the first main working oil path GL1, the second one-way valve 2.2, an oil inlet of the second two-way logic valve 5.2, a working oil port of the second two-way logic valve 5.2 and a first working oil port A1 of the oil path block 1.
And a pressure relief oil way XL is arranged on the first main working oil way GL1 of the oil way block 1 and is connected to a second oil return oil way HL2 through the first main working oil way GL1 and the pressure relief solenoid valve 7.
And a second control oil way KL2 is arranged on the first main working oil way GL1 of the oil way block 1 and is connected to a control port of the hydraulic control one-way valve 8 through the first main working oil way GL 1.
A second protection oil way BL2 is arranged on a second oil return way HL2 of the oil way block 1, and the oil way is connected to a second oil return way HL2 through a second oil return way HL2, an oil inlet of a second overflow valve 6.2 and an oil outlet of the second overflow valve 6.2.
The oil path block 1 is provided with a second oil inlet P2 and a third oil return port T3, and is respectively connected with the first working oil path GL1 and the second oil return path HL 2.
The oil path block 1 is further provided with a pressure measuring port M, and the position of the pressure measuring port M is arranged between the first check valve 2.1 and the third check valve 3.1 on the first main oil path GL 1.
The working process is as follows:
1. pressurizing a steering and braking control loop and unloading a pressure oil source P: the pressure oil source P is charged to the first energy accumulator 9.1 and the second energy accumulator 9.2 in the steering and braking control loop through the check valve 2.1 on the first main working loop GL1, the first working oil port A1 and the second working oil port A2 of the oil path block 1 through the oil inlet P1 of the oil path block 1 until the pressure is charged to the pressure set by the unloading valve 4, then the unloading valve 4 is opened to open the main valve core of the two-way logic cartridge valve 5.1 to enable the oil source P1 to flow to the second oil return port T2 oil return tank 10 through the two-way logic cartridge valve 5.1, and unloading is achieved.
2. The protection function is provided for the steering and braking control loop of the large electric wheel dumper: when the system fails to normally unload due to system failure, the pressure oil source P is always pressurized to the system, when the pressure is set by the overflow valve 6.1, the valve is communicated, and the pressure oil source P flows back to the oil tank 10 through the main circuit GL1, the first protection circuit BL2, the overflow valve 6.1 and the first oil return port T1 to protect a main oil path of the system; on the other hand, when the back pressure of the return oil circuit HL2 is too high due to a system failure and reaches the pressure set by the relief valve 6.2, the valve is opened, and the return oil from the steering control valve 11 flows back to the oil tank 10 through the fourth oil return port T4, the second protection circuit BL1, the relief valve 6.2, the first return oil circuit HL1, and the first return port T1, thereby protecting the return oil circuit of the system.
3. The pressure relief function is provided for a steering and braking control loop: when the system has a fault and needs to be stopped for fault maintenance, under the control of an external power supply, when a shutdown signal is sent out, the electromagnetic valve 7 is started by receiving an electric control signal, and pressure oil on the main loop GL1 flows back to the oil tank 10 through the pressure relief loop XL1, the electromagnetic valve 7, the second oil return circuit HL2 and the first oil return port T1, so that the pressure of the system is relieved, and high-pressure danger is avoided during maintenance.
4. Providing a steering and braking control loop with a loop capable of being used as an external emergency power source: when the motive power oil source P1 cannot supply oil due to a fault, the external oil source may supply pressure oil to the steering control valve 11 through the P2 port and the first working oil port a 1; on the other hand, the external oil source can supply oil to the brake control system through a P3 port, a supplement circuit YL, a two-way logic cartridge valve 5.2, a second main oil way GL2, a second working oil port A2 and the brake control valve 12.
The working principle and the beneficial effects are as follows:
1. the method comprises the steps that a steering and braking control loop of the large electric wheel dumper is pressurized to form a normal pressure loop, when the pressure of the steering and braking control loop reaches a set value, a pressure oil source P is unloaded, so that the long-term high-pressure work of the pressure oil source P is avoided, the service life of an oil pump is further prolonged, or the oil source is conveyed to other working mechanisms to serve as a power source, so that the use efficiency of the oil pump is improved;
2. a loop with a protection function is provided for a steering and braking control loop of the large-scale electric wheel dumper, and when the pressure of the system is increased under an accident condition, an overflow effect can be generated so as to limit the highest pressure;
3. the pressure relief control circuit provides a circuit with a pressure relief function for a steering and braking control circuit of the large electric wheel dumper, and when the system needs to be subjected to fault maintenance, the pressure of the system can be relieved by using external power control;
4. the system provides a loop with the function of providing external emergency power for a steering and braking control loop of the large-scale electric wheel dumper, and when the original power P1 of the system fails and cannot work, the external auxiliary power equipment is connected to provide emergency power so that the dumper can be parked to a safe place.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are still within the scope of the present patent invention, provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. The utility model provides an integrated steering and braking control system of large-scale electronic round of tipper which characterized in that: the electric wheel dumper comprises an oil tank, a pressure oil source and a steering and braking control integrated valve group which are communicated through an oil path block, wherein the pressure oil source is used as a control power source of the whole electric wheel dumper integrated steering and braking control system.
2. The integrated steering and braking control system for the large-sized electric wheel dumper according to claim 1, characterized in that: the steering and braking control integrated valve set comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a first throttle valve, a second throttle valve, an unloading valve, a first logic cartridge valve, a second logic cartridge valve, a first overflow valve, a second overflow valve, a discharge electromagnetic valve and a hydraulic control one-way valve, wherein the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are inserted into an oil path block.
3. The integrated steering and braking control system for the large-sized electric-wheel dumper according to claim 1 or 2, characterized in that: the oil circuit block is provided with a first oil inlet, a second oil inlet, a first oil return port, a second oil return port, a third oil return port, a fourth oil return port, a first working oil port, a second working oil port, a first energy accumulator oil inlet, a second energy accumulator oil inlet and a pressure test port; the hydraulic system comprises a hydraulic oil source, a hydraulic oil circuit block, a hydraulic oil.
4. The integrated steering and braking control system for the large-sized electric wheel dumper according to any one of claims 1-3, characterized in that: a first main working oil way, a second main working oil way, a first pilot oil way, a second pilot oil way, a first control oil way, a second control oil way, a first protection oil way, a second protection oil way and a pressure relief loop are arranged in the oil way block; the first oil inlet is communicated to a steering control valve of a steering and braking control circuit of the large-scale electric wheel dumper through a first main working oil way, a first one-way valve, a second energy accumulator, a third one-way valve, the first energy accumulator, a fourth one-way valve and a first working oil port of an oil way block; a first oil inlet of the oil path block is communicated to a control oil port of the unloading valve through a first oil return path, a first control oil path and a third throttle valve;
a first oil inlet of the oil path block is communicated to an oil tank through a first oil return path, a main valve core of a first two-way logic cartridge valve and a second oil return port; a first oil inlet of the oil path block is communicated to the oil tank through a first oil return path, a first pilot oil path, a control oil port of the first two-way logic cartridge valve, a second pilot oil path, an oil inlet of the unloading valve, an oil outlet of the unloading valve and a first oil return port; and a fourth oil return port of the oil path block is communicated to the oil tank through a second oil return path, a hydraulic control one-way valve and a first oil return port, and the fourth oil return port is communicated with a steering control valve of a steering and braking control loop of the large-scale electric wheel dumper.
5. The large electric wheel dumper integrated steering and braking control system according to claim 4, characterized in that: the first throttling valve is arranged on the first control oil path, the second throttling valve is arranged on the second pilot oil path, and the third throttling valve is arranged on the first pilot oil path.
6. The large-sized electric wheel dumper integrated steering and braking control system according to claim 4 or 5, wherein: a first protection oil way and a second main working oil way are arranged on a first main working oil way of the oil way block, and the first protection oil way is connected to a second oil return oil way through a first working oil way and a first overflow valve; the second main working oil way is communicated to a brake control valve of the brake control loop of the large-scale electric wheel dumper through the first main working oil way, the second one-way valve and a second working oil port of the oil way block.
7. The integrated steering and braking control system for the large-sized electric wheel dumper according to any one of claims 4-6, characterized in that: the first main working oil way is provided with a supplementary oil way, a pressure relief oil way and a second control oil way, and the supplementary oil way is communicated to a steering control valve of a steering and braking control loop of the large-scale electric wheel dumper through the first main working oil way, a second one-way valve, an oil inlet of a second two-way logic valve, a working oil port of the second two-way logic valve and a first working oil port of an oil way block; the pressure relief oil way is connected to the oil return oil way through the first main working oil way and the pressure relief solenoid valve; the second control oil path is connected to a control port of the hydraulic control check valve through the first main working oil path.
8. The integrated steering and braking control system for the large-sized electric wheel dumper according to any one of claims 4-7, characterized in that: and a second protection oil way is arranged on the second oil return oil way and is connected to the second oil return oil way through the second oil return oil way, an oil inlet of the second overflow valve and an oil outlet of the second overflow valve.
9. The integrated steering and braking control system for the large-sized electric wheel dumper according to any one of claims 4-8, characterized in that: and the oil path block is provided with a second oil inlet and a third oil return port which are respectively connected with the first working oil path and the second oil return path.
10. The integrated steering and braking control system for the large-sized electric wheel dumper according to any one of claims 4-9, characterized in that: and the oil path block is also provided with a pressure measuring port, and the position of the pressure measuring port is arranged between the first one-way valve and the third one-way valve on the first main working oil path.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911115579.5A CN110843904A (en) | 2019-11-14 | 2019-11-14 | Integrated steering and braking control system of large electric wheel dumper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911115579.5A CN110843904A (en) | 2019-11-14 | 2019-11-14 | Integrated steering and braking control system of large electric wheel dumper |
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| CN110843904A true CN110843904A (en) | 2020-02-28 |
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| CN201911115579.5A Pending CN110843904A (en) | 2019-11-14 | 2019-11-14 | Integrated steering and braking control system of large electric wheel dumper |
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| CN104401306A (en) * | 2014-12-02 | 2015-03-11 | 湘电重型装备有限公司 | Mining dump truck hydraulic brake control integrated system with large electric wheel |
| CN104454749A (en) * | 2014-12-11 | 2015-03-25 | 湘电重型装备有限公司 | Hydraulic stair control integrated system of large electric-wheel dump truck |
| CN105257617A (en) * | 2015-11-25 | 2016-01-20 | 湘电重型装备有限公司 | Pressure-filling and unloading-controlling integrated system of large electric wheel dump truck |
| CN205225915U (en) * | 2015-11-25 | 2016-05-11 | 湘电重型装备有限公司 | Electronic round large -scale tipper pressurizes and off -load control integration system |
| CN205841351U (en) * | 2016-06-14 | 2016-12-28 | 湘电重型装备有限公司 | A kind of Large Electric wheel self-discharging vehicle unloading control valve |
| CN106740139A (en) * | 2016-12-21 | 2017-05-31 | 湘电重型装备有限公司 | A kind of Large Dump Truck electric braking control device |
| WO2019128013A1 (en) * | 2017-12-28 | 2019-07-04 | 中国铁建高新装备股份有限公司 | Reverse brake control valve for hydraulic walking system |
| CN211032723U (en) * | 2019-11-14 | 2020-07-17 | 湘电重型装备有限公司 | Integrated steering and braking control system of large electric wheel dumper |
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| CN203567710U (en) * | 2013-11-28 | 2014-04-30 | 湘电重型装备有限公司 | Braking system for mining narrow-gauge high-speed manned coach |
| CN104401306A (en) * | 2014-12-02 | 2015-03-11 | 湘电重型装备有限公司 | Mining dump truck hydraulic brake control integrated system with large electric wheel |
| CN104454749A (en) * | 2014-12-11 | 2015-03-25 | 湘电重型装备有限公司 | Hydraulic stair control integrated system of large electric-wheel dump truck |
| CN105257617A (en) * | 2015-11-25 | 2016-01-20 | 湘电重型装备有限公司 | Pressure-filling and unloading-controlling integrated system of large electric wheel dump truck |
| CN205225915U (en) * | 2015-11-25 | 2016-05-11 | 湘电重型装备有限公司 | Electronic round large -scale tipper pressurizes and off -load control integration system |
| CN205841351U (en) * | 2016-06-14 | 2016-12-28 | 湘电重型装备有限公司 | A kind of Large Electric wheel self-discharging vehicle unloading control valve |
| CN106740139A (en) * | 2016-12-21 | 2017-05-31 | 湘电重型装备有限公司 | A kind of Large Dump Truck electric braking control device |
| WO2019128013A1 (en) * | 2017-12-28 | 2019-07-04 | 中国铁建高新装备股份有限公司 | Reverse brake control valve for hydraulic walking system |
| CN211032723U (en) * | 2019-11-14 | 2020-07-17 | 湘电重型装备有限公司 | Integrated steering and braking control system of large electric wheel dumper |
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