CN217598543U - Electric control brake control system of mining vehicle - Google Patents
Electric control brake control system of mining vehicle Download PDFInfo
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- CN217598543U CN217598543U CN202221090897.8U CN202221090897U CN217598543U CN 217598543 U CN217598543 U CN 217598543U CN 202221090897 U CN202221090897 U CN 202221090897U CN 217598543 U CN217598543 U CN 217598543U
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Abstract
The utility model discloses a mining truck electric control system, include: the brake system comprises an oil tank, a hydraulic pump, an electric control valve, a front brake, a rear brake, an electronic brake pedal and an emergency brake switch; the inlet of the hydraulic pump is connected with the oil tank through a hydraulic pipeline, and the outlet of the hydraulic pump is connected with the input port of the emergency braking electromagnetic valve through a hydraulic pipeline; the electrically controlled control valve includes: the emergency braking system comprises a braking electronic control unit, an emergency braking electromagnetic valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a first hydraulic control servo valve, a second hydraulic control servo valve, a rear braking valve core displacement sensor and a front braking valve core displacement sensor. The utility model has the characteristics of output flow is big, response speed is fast, control accuracy is high, can satisfy different model off-highway mining truck hydraulic braking system requirements.
Description
Technical Field
The utility model belongs to the technical field of off-highway mining car, concretely relates to mining car electric control system.
Background
An off-highway dump truck (mine truck for short) is mainly used for transporting ores and mineral aggregates in large-scale surface mines and mainly comprises a truck frame, a power system, a transmission system, an operation system, a cab assembly, a brake device and the like.
At present, most of brake systems of mining vehicles are directly operated hydraulic brakes, control signals of the hydraulic brakes are sent by hydraulic brake pedals arranged inside a cab, and front brakes and rear brakes are directly controlled to brake. However, the hydraulic brake pedal is arranged in the cab, so that the risk of oil leakage exists, the safety of a driver is possibly influenced, and certain potential safety hazards exist; meanwhile, when the hydraulic brake pedal is maintained, the pressure oil remained in the hydraulic brake pedal can pollute the interior of the cab.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mining car electric control system has that the output flow is big, response speed is fast, control accuracy is high characteristics, can satisfy the off-highway mining car hydraulic braking system requirement of different models.
In order to achieve the above object, the utility model uses the technical solution that:
mining car electric control system includes: the brake system comprises an oil tank, a hydraulic pump, an electric control valve, a front brake, a rear brake, an electronic brake pedal and an emergency brake switch; the inlet of the hydraulic pump is connected with the oil tank through a hydraulic pipeline, and the outlet of the hydraulic pump is connected with the input port of the emergency brake solenoid valve through a hydraulic pipeline; the electrically controlled control valve includes: the emergency brake system comprises a brake electronic control unit, an emergency brake electromagnetic valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a first hydraulic control servo valve, a second hydraulic control servo valve, a rear brake spool displacement sensor and a front brake spool displacement sensor; the emergency brake solenoid valve is connected with an emergency brake switch through a control signal line, an output port of the emergency brake solenoid valve is respectively connected with input ports of the first electromagnetic directional valve and the fourth electromagnetic directional valve through hydraulic pipelines, and a return port is connected with an oil tank through a hydraulic pipeline; an output port of the fourth electromagnetic directional valve is respectively connected with a pilot control port of the first hydraulic control servo valve and an input port of the third electromagnetic directional valve through a hydraulic pipeline; an output port of the third electromagnetic directional valve is connected with a pressure oil tank through a hydraulic pipeline, and an output port of the third electromagnetic directional valve is connected with an output port of the second electromagnetic directional valve through a hydraulic pipeline; the input port of the first hydraulic control servo valve is connected with the output port of the hydraulic pump through a hydraulic pipeline, and the output port of the first hydraulic control servo valve is connected with the input port of the front brake through a hydraulic pipeline; an output port of the first electromagnetic directional valve is respectively connected with a pilot control port of the second hydraulic control servo valve and an input port of the second electromagnetic directional valve through a hydraulic pipeline, and an output port of the second electromagnetic directional valve is connected with a pressure oil tank through a hydraulic pipeline; an input port of the second hydraulic control servo valve is connected with an output port of the hydraulic pump through a hydraulic pipeline, and an output port of the second hydraulic control servo valve is connected with an input port of the rear brake through a hydraulic pipeline; the signal input port of the brake electronic control unit is respectively connected with an electronic brake pedal, a rear brake valve core displacement sensor and a front brake valve core displacement sensor through control signal lines, and the signal output port is respectively connected with a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a first hydraulic control servo valve and a second hydraulic control servo valve through control signal lines.
Furthermore, a rear brake spool displacement sensor and a front brake spool displacement sensor adopt spool displacement sensors, an induction core connecting rod of the spool displacement sensor is connected with spools of the first hydraulic control servo valve and the second hydraulic control servo valve, and a control signal line of the spool displacement sensor is connected with a signal input end of the brake electronic control unit.
Furthermore, the first electromagnetic directional valve, the second electromagnetic directional valve, the third electromagnetic directional valve and the fourth electromagnetic directional valve adopt electromagnetic directional valves.
Further, an outlet of the hydraulic pump is connected with an energy accumulator through a hydraulic pipeline.
Compared with the prior art, the utility model have following advantage:
the utility model discloses automatically controlled braking control system of mining car adopts the high-speed ooff valve as the front and back braking servo valve of pilot valve control, and high accuracy displacement sensor is installed to front and back braking servo valve case, is connected with braking electronic control unit and forms closed-loop control, has integrateed urgent solenoid valve simultaneously, can realize the emergency braking of vehicle under emergency, and the system has that output flow is big, response speed is fast, characteristics that control accuracy is high, can satisfy different model non-highway mining car hydraulic braking system requirements.
1. The utility model discloses an implementation and the release of service brake around the electronic brake pedal control replace current direct action formula liquid presser foot brake valve control technique, can improve the security in the driver's cabin, produce when avoiding current direct action formula liquid presser foot brake valve work, maintenance and reveal, cause the pollution in influence and the driver's cabin to driver's safety.
2. The utility model discloses a technical scheme of high frequency response solenoid directional valve as guide's control liquid accuse servo valve compares with current electric liquid servo proportional control scheme, has characteristics with low costs, good reliability, that fluid pollution degree adaptability is good.
3. The utility model discloses a pilot operated servo valve case position closed loop feedback control technical scheme compares with current open loop hydraulic pressure servo proportional control scheme, has the characteristics that control accuracy is high, response speed is fast.
Drawings
Fig. 1 is a structural schematic diagram of the electric control brake control system of the utility model for the middling mining vehicle.
Detailed Description
The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
As shown in fig. 1, it is a structural schematic diagram of the electric control brake control system for the middling mine car of the present invention.
Mining car electric control system includes: the brake system comprises an oil tank 1, a hydraulic pump 2, an accumulator 3, an electrically controlled control valve 4, a front brake 5, a rear brake 6, an electronic brake pedal 7 and an emergency brake switch 8.
The oil tank 1 is used as a device for storing pressure oil and is used for providing a heat dissipation function for the pressure oil in the electric control system of the mining vehicle.
The hydraulic pump 2 is a constant-pressure variable pump, is installed at a power output port of the engine, and converts mechanical energy of the engine into pressure energy of pressure oil; the hydraulic pump 2 is used as a power device of an electric control brake control system of the mining vehicle and provides hydraulic power with stable pressure for the whole control system; an inlet of the hydraulic pump 2 is connected with the oil tank 1 through a hydraulic pipeline, and an outlet of the hydraulic pump 2 is connected with an input port of the emergency braking solenoid valve 41 through a hydraulic pipeline.
The outlet of the hydraulic pump 2 is connected with the energy accumulator 3 through a hydraulic pipeline, and the energy accumulator 3 is used as a standby power source of the electric control brake control system and plays a role when the hydraulic pump fails.
The electronically controlled control valves 4 receive brake commands and transmit hydraulic power to the front brakes 5 and the rear brakes 6.
The front brake 5 and the rear brake 6 are used as executive components of the control system, receive hydraulic power and release, and form working braking or emergency braking.
The electronic brake pedal 7 is used as an electronic control element of the electric control brake control system of the mining vehicle and is used for sending a brake command to the electric control valve 4.
The emergency brake switch 8 is used as an electronic control element of the electric control brake control system of the mining vehicle, and is used for sending an emergency brake command to an emergency brake solenoid valve 41 of the electric control valve 4. The driving emergency brake switch 8 is provided in the cab.
The electrically controlled control valve 4 includes: the brake system comprises a brake electronic control unit 40, an emergency brake solenoid valve 41, a first electromagnetic directional valve 42 (high-frequency response electromagnetic directional valve), a second electromagnetic directional valve 43 (high-frequency response electromagnetic directional valve), a third electromagnetic directional valve 44 (high-frequency response electromagnetic directional valve), a fourth electromagnetic directional valve 45 (high-frequency response electromagnetic directional valve), a first hydraulic control servo valve 46, a second hydraulic control servo valve 47, a rear brake spool displacement sensor 48 and a front brake spool displacement sensor 49.
The emergency brake electromagnetic valve 41 belongs to a brake electromagnetic valve, receives an emergency brake instruction of the emergency brake switch 8, closes the emergency brake switch 8, and switches on the emergency brake electromagnetic valve 41; the emergency brake switch 8 is switched off, and the emergency brake solenoid valve 41 is switched off when power is lost; the first electromagnetic directional valve 42, the second electromagnetic directional valve 43, the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45 belong to high-frequency-response electromagnetic directional valves and are controlled to be switched on or switched off by the brake electronic control unit 40; the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 are hydraulic control valves (provided with a plurality of adjusting points which can be set according to different pipeline control requirements), belong to pipeline control equipment, and are controlled by the brake electronic control unit 40 to realize linkage operation with the first electromagnetic directional valve 42, the second electromagnetic directional valve 43, the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45 (the first hydraulic control servo valve 46 receives an adjusting instruction sent by the brake electronic control unit 40 and adjusts the position of a valve core to the adjusting point to realize the functions of opening, closing and adjusting the opening of the valve, the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45 receive an action instruction to conduct or close, so that the first hydraulic control servo valve 46 is linked with the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45, the second hydraulic control servo valve 47 receives an adjusting linkage instruction sent by the brake electronic control unit 40 and adjusts the position of the valve core to the adjusting point to realize the opening, closing and the opening of the valve, and the first electromagnetic directional valve 42 and the second electromagnetic directional valve 4 receive an action instruction to conduct or close, so that the second hydraulic control servo valve 43 and the second electromagnetic directional valve 43 are realized.
A signal input port of the brake electronic control unit 40 is respectively connected with the electronic brake pedal 7, the rear brake spool displacement sensor 48 and the front brake spool displacement sensor 49 through control signal lines, and a signal output port is respectively connected with the first electromagnetic directional valve, the second electromagnetic directional valve 43, the third electromagnetic directional valve 44, the fourth electromagnetic directional valve 45, the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 through control signal lines; and receiving a braking instruction, sending an action instruction and an adjustment instruction, receiving the valve core positions fed back by a rear brake valve core displacement sensor 48 and a front brake valve core displacement sensor 49, controlling the conduction or the closure of the first electromagnetic directional valve 42, the second electromagnetic directional valve 43, the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45, and adjusting the valve core positions of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 to an adjusting point.
An input port of the emergency braking solenoid valve 41 is connected with an output port of the hydraulic pump 2 through a hydraulic pipeline, an output port of the emergency braking solenoid valve 41 is respectively connected with input ports of the first electromagnetic directional valve 42 and the fourth electromagnetic directional valve 45 through hydraulic pipelines, and a return port is connected with the oil tank 1 through a hydraulic pipeline; an output port of the fourth electromagnetic directional valve 45 is respectively connected with a pilot control port of the first pilot-controlled servo valve 46 and an input port of the third electromagnetic directional valve 44 through hydraulic pipelines; an output port of the third electromagnetic directional valve 44 is connected with the pressure oil tank 1 through a hydraulic pipeline (an output port of the third electromagnetic directional valve 44 is connected with an output port of the second electromagnetic directional valve 43 through a hydraulic pipeline); an input port of the first hydraulic control servo valve 46 is connected with an output port of the hydraulic pump 2 through a hydraulic pipeline, and an output port of the first hydraulic control servo valve 46 is connected with an input port of the front brake 5 through a hydraulic pipeline; an output port of the first electromagnetic directional valve 42 is respectively connected with a pilot control port of the second hydraulic control servo valve 47 and an input port of the second electromagnetic directional valve 43 through hydraulic pipelines, and an output port of the second electromagnetic directional valve 43 is connected with the pressure oil tank 1 through a hydraulic pipeline; an input port of the second hydraulic control servo valve 47 is connected with an output port of the hydraulic pump 2 through a hydraulic line, and an output port of the second hydraulic control servo valve 47 is connected with an input port of the rear brake 6 through a hydraulic line.
The rear brake spool displacement sensor 48 and the front brake spool displacement sensor 49 adopt high-precision spool displacement sensors, the induction core connecting rod of the spool displacement sensor is connected with the spools of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47, and the control signal line of the spool displacement sensor is connected with the signal input end of the brake electronic control unit 40. The rear brake spool displacement sensor 48 and the front brake spool displacement sensor 49 are connected to a signal input port of the brake electronic control unit 40 via position signal lines, respectively. The rear brake spool displacement sensor 48 and the front brake spool displacement sensor 49 feed back spool positions of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 and feed back the spool positions to the brake electronic control unit 40, and the brake electronic control unit 40 sends an adjustment instruction to the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 to form closed-loop control until the spool positions of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 meet the opening requirement of the electronic brake pedal 7.
The electronic brake pedal 7 is connected to the brake electronic control unit 40 through a control signal line. The electronic brake pedal 7 is used as an integrated electronic pedal sensor (the sensor can adopt a displacement sensor, a hall sensor or an angle sensor), can accurately sense the weight and the stroke length of the pedal of a driver control pedal, and converts the weight and the stroke length into an electric signal (braking instruction) to be transmitted to the brake electronic control unit 40 (various automobile electronic controllers can be adopted as required).
Through the design, the electric control system for the mining truck has the characteristics of large output flow, high response speed and high control precision, and can meet the requirements of hydraulic braking systems of off-highway mining trucks of different models.
The application method of the electric control brake control system of the mining vehicle comprises the following specific steps:
(1) And the vehicle is in a flameout state.
At the moment, the engine does not operate, the hydraulic pump 2 does not work, so that no pressure exists in a hydraulic pipeline, and the electric control system of the mining truck does not work.
(2) And a braking state of vehicle activation.
At this time, the engine runs, the emergency brake switch 8 is in a disconnected state, the emergency brake solenoid valve 41 is not electrified and is in a disconnected state; the engine drives the hydraulic pump 2 to operate to output pressure oil, the pressure is continuously increased and maintained to a set value of 240bar of the hydraulic pump 2, and the pressure oil also enters the energy accumulator 3 at the moment; the braking electronic control unit 40 controls the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 to conduct in the braking direction and block in the backflow direction; the pressure oil reaches the front brake 5 from the hydraulic pump 2 and the first pilot servo valve 46, and at the same time, the pressure oil reaches the rear brake 6 through the second pilot servo valve 47, and the front brake 5 and the rear brake 6 are simultaneously operated, and the vehicle is braked and stopped, and at this time, the system is in an emergency brake application state.
The brake electronic control unit 40 controls the emergency brake solenoid valve 41, the second electromagnetic directional valve 43, the third electromagnetic directional valve 44 and the fourth electromagnetic directional valve 45 to be in an off state; because the outlet direction and the backflow direction of the emergency brake switch 8 are in a disconnected state, the hydraulic oil is blocked from reaching the pilot control ports of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47, the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 are blocked in the direction of returning to the oil tank 1, and the braking direction is conducted.
(3) And a moving state after the vehicle is started.
After the vehicle is started, the emergency brake switch 8 is closed, an emergency brake instruction is sent to the emergency brake solenoid valve 41, the emergency brake solenoid valve 41 is electrified, and the output port is communicated with the return port; the brake electronic control unit 40 controls the first electromagnetic directional valve 42 and the fourth electromagnetic directional valve 45 to be in a conducting state, the second electromagnetic directional valve 43 and the third electromagnetic directional valve 44 to be in a disconnecting state, and controls the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 to brake in a blocking direction and conduct in a backflow direction; pressure oil of the hydraulic pump 2 sequentially passes through the emergency braking electromagnetic valve 41 and the first electromagnetic directional valve 42 to reach a pilot control port of the second hydraulic control servo valve 47, the pressure oil in the rear brake 6 flows back to the oil tank 1 through the second hydraulic control servo valve 47 and a return port of the emergency braking electromagnetic valve 41, and braking of the rear brake 6 is released; meanwhile, the pressure oil of the hydraulic pump 2 sequentially passes through the emergency braking solenoid valve 41 and the fourth solenoid directional valve 45 to reach the pilot control port of the first pilot-controlled servo valve 46, the pressure oil in the front brake 5 flows back to the oil tank 1 through the first pilot-controlled servo valve 46 and the return port of the emergency braking solenoid valve 41, and the pressure of the front brake 5 is released; at the moment, the system is in an emergency brake release state, and the vehicle can move.
(4) Braking during vehicle movement.
When the vehicle moves, the emergency brake switch 8 is in a closed state, the emergency brake solenoid valve 41 is electrified, and the output port and the return port are communicated;
the electronic brake pedal 7 is stepped on, the electronic brake pedal 7 sends a brake instruction to the brake electronic control unit 40, the brake electronic control unit 40 controls the first electromagnetic directional valve 42 and the fourth electromagnetic directional valve 45 to be conducted, the second electromagnetic directional valve 43 and the third electromagnetic directional valve 44 to be disconnected, the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 are controlled to be conducted in the brake direction, the backflow direction is blocked, and the valve core moves to a specified position; the pressure oil of the hydraulic pump 2 reaches the pilot control port of the second hydraulic servo valve 47 through the output port of the emergency brake solenoid valve 41 and the first solenoid directional valve 42, and simultaneously reaches the pilot control port of the first hydraulic servo valve 46 through the output port of the emergency brake solenoid valve 41 and the fourth solenoid directional valve 45; the hydraulic pump 2 leads the pressure oil to respectively reach the front brake 5 and the rear brake 6, and the rear brake 6 and the front brake 5 for braking through the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47;
the rear brake spool displacement sensor 48 and the front brake spool displacement sensor 49 respectively feed the spool positions of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 back to the brake electronic control unit 40; the brake electronic control unit 40 controls the conduction of the second electromagnetic directional valve 43 and the third electromagnetic directional valve 44, and the pilot control ports of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 lose oil pressure; the braking electronic control unit 40 controls the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 to brake in the direction blocking mode, the backflow direction conducting mode and the valve core position adjusting mode; the pressure oil in the rear brake 6 flows back to the oil tank 1 through the second hydraulic control servo valve 47 and the return port of the emergency braking electromagnetic valve 41, the pressure oil in the front brake 5 flows back to the oil tank 1 through the first hydraulic control servo valve 46 and the return port of the emergency braking electromagnetic valve 41, and the braking of the rear brake 6 and the front brake 5 is released;
the brake electronic control unit 40 repeatedly controls the on/off of the second electromagnetic directional valve 43 and the third electromagnetic directional valve 44, controls the blocking or on/off of the braking direction and the backflow direction of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47, and adjusts the valve core position and the opening degree until the valve core positions of the first hydraulic control servo valve 46 and the second hydraulic control servo valve 47 reach the opening degree requirement of the electronic brake pedal 7, and further adjusts the braking strength of the rear brake 6 and the front brake 5, thereby realizing the deceleration or the stop of the vehicle.
The terminology used herein is for the purpose of description and illustration, and is not intended to be limiting. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (4)
1. The utility model provides a mining car electric control system which characterized in that includes: the brake system comprises an oil tank, a hydraulic pump, an electric control valve, a front brake, a rear brake, an electronic brake pedal and an emergency brake switch; the inlet of the hydraulic pump is connected with the oil tank through a hydraulic pipeline, and the outlet of the hydraulic pump is connected with the input port of the emergency braking electromagnetic valve through a hydraulic pipeline; the electrically controlled control valve includes: the emergency brake system comprises a brake electronic control unit, an emergency brake electromagnetic valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a first hydraulic control servo valve, a second hydraulic control servo valve, a rear brake spool displacement sensor and a front brake spool displacement sensor; the emergency brake solenoid valve is connected with an emergency brake switch through a control signal line, an output port of the emergency brake solenoid valve is respectively connected with input ports of the first electromagnetic directional valve and the fourth electromagnetic directional valve through hydraulic pipelines, and a return port is connected with an oil tank through a hydraulic pipeline; an output port of the fourth electromagnetic directional valve is respectively connected with a pilot control port of the first hydraulic control servo valve and an input port of the third electromagnetic directional valve through a hydraulic pipeline; the output port of the third electromagnetic directional valve is connected with the pressure oil tank through a hydraulic pipeline, and the output port of the third electromagnetic directional valve is connected with the output port of the second electromagnetic directional valve through a hydraulic pipeline; the input port of the first hydraulic control servo valve is connected with the output port of the hydraulic pump through a hydraulic pipeline, and the output port of the first hydraulic control servo valve is connected with the input port of the front brake through a hydraulic pipeline; an output port of the first electromagnetic directional valve is respectively connected with a pilot control port of the second hydraulic control servo valve and an input port of the second electromagnetic directional valve through a hydraulic pipeline, and an output port of the second electromagnetic directional valve is connected with a pressure oil tank through a hydraulic pipeline; an input port of the second hydraulic control servo valve is connected with an output port of the hydraulic pump through a hydraulic pipeline, and an output port of the second hydraulic control servo valve is connected with an input port of the rear brake through a hydraulic pipeline; the signal input port of the brake electronic control unit is respectively connected with an electronic brake pedal, a rear brake valve core displacement sensor and a front brake valve core displacement sensor through control signal lines, and the signal output port is respectively connected with a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a first hydraulic control servo valve and a second hydraulic control servo valve through control signal lines.
2. The mining vehicle electric control system according to claim 1, characterized in that the rear brake spool displacement sensor and the front brake spool displacement sensor employ spool displacement sensors, an induction core link of the spool displacement sensors is connected with spools of the first hydraulic control servo valve and the second hydraulic control servo valve, and a control signal line of the spool displacement sensors is connected with a signal input end of the brake electronic control unit.
3. The mining vehicle electric control system according to claim 1, wherein the first electromagnetic directional valve, the second electromagnetic directional valve, the third electromagnetic directional valve and the fourth electromagnetic directional valve are electromagnetic directional valves.
4. The mining vehicle electrical control system of claim 1, wherein an accumulator is connected to an outlet of the hydraulic pump via a hydraulic line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221090897.8U CN217598543U (en) | 2022-05-07 | 2022-05-07 | Electric control brake control system of mining vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221090897.8U CN217598543U (en) | 2022-05-07 | 2022-05-07 | Electric control brake control system of mining vehicle |
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| CN217598543U true CN217598543U (en) | 2022-10-18 |
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| CN202221090897.8U Active CN217598543U (en) | 2022-05-07 | 2022-05-07 | Electric control brake control system of mining vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889570A (en) * | 2022-05-07 | 2022-08-12 | 内蒙古北方重型汽车股份有限公司 | Electric control brake control system for mining vehicle and use method thereof |
| CN117246294A (en) * | 2023-11-20 | 2023-12-19 | 杭叉集团股份有限公司 | Electro-hydraulic brake hydraulic system of forklift |
-
2022
- 2022-05-07 CN CN202221090897.8U patent/CN217598543U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889570A (en) * | 2022-05-07 | 2022-08-12 | 内蒙古北方重型汽车股份有限公司 | Electric control brake control system for mining vehicle and use method thereof |
| CN117246294A (en) * | 2023-11-20 | 2023-12-19 | 杭叉集团股份有限公司 | Electro-hydraulic brake hydraulic system of forklift |
| CN117246294B (en) * | 2023-11-20 | 2024-01-30 | 杭叉集团股份有限公司 | Electro-hydraulic brake hydraulic system of forklift |
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