Auxiliary transition system of trackless wet braking vehicle
阅读说明：本技术 一种无轨湿式制动车辆的辅助转场系统 (Auxiliary transition system of trackless wet braking vehicle ) 是由 杨锦山 胡远 张坤 杨新宇 常红祥 董章林 徐万寿 于 2020-06-13 设计创作，主要内容包括：本发明公开了一种无轨湿式制动车辆的辅助转场系统,包括液压油箱、液压泵、液压泵驱动装置、电磁换向阀、工作系统,所述液压泵驱动装置为液压泵提供动力,所述液压油箱与液压泵之间、液压泵与电磁换向阀之间、电磁换向阀与工作系统之间、工作系统与液压油箱之间通过液压油管连接,所述液压泵驱动装置为内燃发动机,所述工作系统与液压油箱之间的回油液压油管上设置有油温冷却装置。本发明能避免电机与液压泵烧坏,有效保障了转场过程安全,转场时无需停车休息,转场效率高。(The invention discloses an auxiliary transition system of a trackless wet brake vehicle, which comprises a hydraulic oil tank, a hydraulic pump driving device, an electromagnetic directional valve and a working system, wherein the hydraulic pump driving device provides power for the hydraulic pump, the hydraulic oil tank and the hydraulic pump, the hydraulic pump and the electromagnetic directional valve, the electromagnetic directional valve and the working system and the hydraulic oil tank are connected through hydraulic oil pipes, the hydraulic pump driving device is an internal combustion engine, and an oil temperature cooling device is arranged on an oil return hydraulic oil pipe between the working system and the hydraulic oil tank. The invention can avoid burning out the motor and the hydraulic pump, effectively ensures the safety of the transition process, does not need to stop for rest during transition and has high transition efficiency.)
1. The utility model provides a supplementary transition system of trackless wet brake vehicle, includes hydraulic tank (1), hydraulic pump (2), hydraulic pump drive arrangement, solenoid directional valve, operating system, hydraulic pump drive arrangement provides power for hydraulic pump (2), between hydraulic tank and the hydraulic pump, between hydraulic pump and the solenoid directional valve, between solenoid directional valve and the operating system, through hydraulic pressure oil pipe connection, its characterized in that between operating system and the hydraulic tank: the hydraulic pump driving device is an internal combustion engine, and an oil temperature cooling device (10) is arranged on an oil return hydraulic oil pipe between the working system and the hydraulic oil tank.
2. The auxiliary transfer system of a trackless wet brake vehicle of claim 1, wherein: and a one-way valve (6) is arranged on a hydraulic oil pipe between the hydraulic pump and the electromagnetic directional valve.
3. The auxiliary transfer system of a trackless wet brake vehicle of claim 2, wherein: and an overflow valve (7) is connected to a hydraulic oil pipe between the hydraulic pump and the one-way valve.
4. The auxiliary transfer system of a trackless wet brake vehicle of claim 3, wherein: the overflow valve (7) is a pilot-operated overflow valve.
5. The auxiliary transfer system of a trackless wet brake vehicle of claim 2, wherein: and a hydraulic gauge (8) is arranged on a hydraulic oil pipe between the one-way valve and the electromagnetic directional valve.
6. The auxiliary transfer system of a trackless wet brake vehicle of claim 5, wherein: and a pressure reducing valve (9) is arranged on a hydraulic oil pipe between the hydraulic gauge and the steering electromagnetic directional valve.
7. The auxiliary transfer system of a trackless wet brake vehicle of claim 1, wherein: the electromagnetic directional valve comprises a steering electromagnetic directional valve (3) and a braking electromagnetic directional valve (4), the steering electromagnetic directional valve is connected with a steering work system, and the braking electromagnetic directional valve is connected with a braking work system.
8. The auxiliary transfer system of a trackless wet brake vehicle of claim 1, wherein: the oil temperature cooling device (10) is an air-cooled radiator.
9. The auxiliary transfer system of a trackless wet brake vehicle of claim 1, wherein: and a hydraulic oil filter (11) is arranged on a hydraulic oil pipe between the hydraulic oil tank and the hydraulic pump.
10. The auxiliary transfer system of a trackless wet brake vehicle of claim 1, wherein: the internal combustion engine is a diesel engine.
Technical Field
The invention belongs to the technical field of mining equipment, and particularly relates to an auxiliary transition system of a trackless wet brake vehicle.
Background
In special underground environment, compared with a diesel carry scraper, trackless wet braking vehicles such as an electric carry scraper are cleaner in energy source, lower in cost and more widely applied, but are limited by the length of an external power supply cable, and the operation range of the trackless wet braking vehicles is relatively fixed. When the equipment needs to be transferred for a long distance, a diesel scraper needs to be used for traction, and the steering and braking of the trackless wet braking vehicle are completed through an auxiliary transfer system during the transfer. If TORO1400E6m electric scooptram is a trackless wet brake vehicle produced by mountain twick, the original auxiliary transition system is composed of a 24V direct current motor and a storage battery thereof, an oil pump, a steering valve, a controller and various quick-change connector sockets, when a long-distance transition is carried out, the motor serving as a hydraulic pump driving device bears the load, the ventilation environment in a roadway is poor, the shell depending on the motor cannot rapidly dissipate heat, heat accumulation is generated in the motor operation process, the vehicle is stopped for rest every 15 minutes, the heat dissipation and cooling are carried out, the traction and dragging are continued after the motor is cooled, the transition efficiency is reduced, when the hydraulic pump is just started, the dry and oil-free state is achieved, the motor load is intensified, meanwhile, the oil pressure required by a brake oil way is different from that required by a steering oil way, the steering overpressure is caused when the braking is met, and the oil temperature is quickly. Therefore, after long-distance transition or transition times are more, the motor and the hydraulic pump are often burnt out, and accidents caused by slippage and the like can also occur when a slope is used.
Therefore, the key for solving the problems is to research and develop a trackless wet braking vehicle auxiliary transfer system which can avoid burning out of a hydraulic pump driving device and a hydraulic pump, effectively ensure the safety of a transfer process, avoid stopping and having a rest during the transfer and have high transfer efficiency.
Disclosure of Invention
The invention aims to provide an auxiliary transition system of a trackless wet brake vehicle.
The hydraulic oil pump driving device is used for providing power for the hydraulic pump, the hydraulic oil tank is connected with the hydraulic pump, the hydraulic pump is connected with the electromagnetic reversing valve, the electromagnetic reversing valve is connected with the working system, and the working system is connected with the hydraulic oil tank through hydraulic oil pipes, the hydraulic pump driving device is an internal combustion engine, and an oil temperature cooling device is arranged on an oil return hydraulic oil pipe between the working system and the hydraulic oil tank. The hydraulic pump driving device is used for driving the hydraulic pump to provide oil pressure with different pressures for the steering and braking oil ways, so that the steering and braking systems are enabled to be sensitive and effective, and the water cooling and air cooling modes are combined to ensure that the heat dissipation is sufficient in the operation process of the auxiliary transition system of the whole trackless wet braking vehicle.
The invention has the following technical effects:
1. the diesel engine is adopted to replace a direct current motor, a water cooling loop of the diesel engine can absorb heat of a cylinder body, the heat is conducted by using water as a heat carrier through a liquid loop of cooling water, and then the heat is dissipated in a convection mode through a large-area heat dissipating fin, so that the long-time running work of the engine can be effectively ensured;
2. the one-way valve is adopted, so that the hydraulic pump can be prevented from being damaged when the pressure of the working system is suddenly increased, and meanwhile, the oil in the system can not flow back and be lost when the hydraulic pump is disassembled, so that the later maintenance of the hydraulic pump is facilitated;
3. the pressure reducing valve is adopted, the steering requirement oil pressure is often smaller than the braking requirement oil pressure, the braking pressure of the trackless wet braking vehicle equipment in the experiment is 8MPa, and the steering pressure is 4.5MPa, so that the pressure reducing valve is additionally arranged, and the protection of a steering oil circuit is facilitated;
4. this supplementary transition system increases water-cooling, air-cooled heat dissipation, needn't stop waiting for the cooling in the stroke, and long-time remote transition is more advantageous, need not worry during this period and leads to unable continuation because of motor or gear hydraulic pump burns out, and the security obtains promoting, and when practicing thrift the transition time, efficiency obtains promoting.
Drawings
FIG. 1 is a schematic diagram of the hydraulic system connections of the present invention;
FIG. 2 is a schematic diagram of the connection of a hydraulic system in the original auxiliary transition system;
in the figure: the hydraulic control system comprises a
Detailed Description
The invention is further described with reference to the accompanying drawings, but the invention is not limited in any way, and any alterations or substitutions based on the teaching of the invention are within the scope of the invention.
The hydraulic oil cooling system comprises a
The electromagnetic directional valve comprises a steering electromagnetic directional valve and a braking electromagnetic directional valve, the steering electromagnetic directional valve is connected with the steering work system, and the braking electromagnetic directional valve is connected with the braking work system.
Be provided with
And an overflow valve 7 is connected to a hydraulic oil pipe between the hydraulic pump and the one-way valve.
The overflow valve 7 is a pilot-operated overflow valve, in order to prevent accidental pressure, a DBW10B-1-50B/315CG24N9Z5L pilot-operated overflow valve is additionally arranged, the pilot-operated overflow valve consists of a pilot valve and a main valve, when a valve core of the pilot valve is pushed open by liquid pressure, the oil flows back to an oil tank through central holes of the valve core of the pilot valve and the main valve, at the moment, liquid flows in a damping hole, and due to the damping effect of the damping hole, the pressure at the upper end of a balance piston is smaller than the pressure at the lower end, so that the main valve is pushed open, a valve port is positioned at a certain opening amount, the pressure of a liquid inlet is basically stabilized at a certain value, and the pressure.
And a
A
And an oil
The oil
The hydraulic oil pipe between the hydraulic oil tank and the hydraulic pump is provided with a
The internal combustion engine is a diesel engine.
The steering electromagnetic reversing valve is a two-position four-way electromagnetic reversing valve.
The brake electromagnetic directional valve is a three-position four-way electromagnetic directional valve.
The working principle and the working process of the invention are as follows: a15 kw small diesel engine is adopted to replace an original 24V motor to serve as a power source, a matched hydraulic valve group is replaced, a control handle is connected, and a hydraulic connecting pipeline of the equipment is unchanged. In the using process, the diesel carry scraper normally moves or turns along with a roadway, a driver of the towed trackless wet brake vehicle only needs to control a steering valve handle attached to the auxiliary transfer system with both hands along with the traveling route of the towed vehicle, and can walk in a straight line or in a turning way. The electromagnetic valve, the cooling fan, the power supply for starting the diesel engine and the like can adopt the following 3 modes that firstly, the trackless wet braking vehicle is provided with a storage battery for supplying power; secondly, an external 24V storage battery supplies power; and drawing 24V power supply from the trailer diesel scraper. In the use process, the auxiliary transition hydraulic system can meet the requirements of braking and steering, is sensitive and effective in steering and braking, does not need to stop for long-time long-distance transition, improves the safety, saves the transition time and improves the transition efficiency. The auxiliary transfer system is also suitable for transfer of other trackless wet brake equipment.
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