CN-121973648-A - Lithium battery underground mine car

Abstract

The invention belongs to the technical field of engineering machinery, and particularly relates to a lithium battery underground mine car. The hydraulic system comprises a hydraulic power motor fixed on the front frame, a transfer case in transmission connection with the output end of the hydraulic power motor, a working pump, a steering pump and a brake pump which are driven by the transfer case at the same time, a transmission system, a cab assembly fixed on the front frame, and a carriage assembly hinged on the rear frame and driven by a lifting oil cylinder to lift. The technical method solves the technical problems of poor power integration adaptation, insufficient safety protection, low maintenance convenience and poor working condition suitability of the existing lithium battery underground mine car, and provides an integrated, intelligent and high-adaptability lithium battery underground mine car.

Inventors

• KONG CHAO
• FAN YOUGUO
• Yuan shuang
• YIN JIZE
• LI MING
• FENG YANQIU
• ZHAO XINGYIN
• WU XIAOYAN
• MENG HAIBIN
• XU ZELIN
• GUO LIANFENG

Assignees

• 徐州徐工能源装备有限公司

Dates

Publication Date

20260505

Application Date

20260327

Claims (10)

1. 1. A lithium battery underground mine car, comprising: The frame assembly comprises a front frame and a rear frame which are mutually hinged; a power system including a battery pack disposed on the front frame; the hydraulic system comprises a hydraulic power motor fixed on the front frame, a transfer case in transmission connection with the output end of the hydraulic power motor, and a working pump, a steering pump and a brake pump which are driven by the transfer case at the same time, wherein the working pump is communicated with the working hydraulic system, the steering pump is communicated with the steering hydraulic system, and the brake pump is communicated with the brake hydraulic system; The transmission system comprises a front walking driving motor and a rear walking driving motor which are used for driving the vehicle to run, and the output ends of the front walking driving motor and the rear walking driving motor are respectively in transmission connection with the front driving bridge and the rear driving bridge through transmission shafts; the cab assembly is fixed on the front frame; the carriage assembly is hinged on the rear frame and is driven to lift by the lifting oil cylinder.
2. 2. The lithium battery underground mine car according to claim 1, wherein the battery pack is internally integrated with a high-voltage distribution box, a liquid cooling and hydro-thermal device for adjusting the temperature of the battery, and a fire fighting device.
3. 3. The lithium battery underground mine car according to claim 2, wherein the battery pack is suspended and fixed on the front frame, and the electrical interface of the battery pack is of a quick-plug structure.
4. 4. The lithium battery underground mine car according to claim 1, wherein two vertical hinge pins are arranged up and down at the hinge joint of the front frame and the rear frame, wherein the upper hinge point is a tight hinge point, the lower hinge point is a loose hinge point, and steel sleeves subjected to heat treatment are embedded in the hinge plate holes of the front frame and the rear frame.
5. 5. The lithium battery underground mine car of claim 1, further comprising a swing frame, wherein the front axle is connected to the front frame via the swing frame and a pin.
6. 6. The lithium battery underground mine car of claim 1, wherein in the hydraulic system: The steering pump is communicated with an oil inlet of the electric control steering valve, the electric control handle is respectively and electrically connected with the electric control steering valve and the hydraulic power motor, and the rotating speed of the hydraulic power motor is synchronously controlled when the electric control handle is operated to steer.
7. 7. The underground lithium battery car of claim 1, wherein the front axle and the rear axle are integrated with a reverse wet brake for providing service braking and parking braking, and/or the underground lithium battery car further comprises a heat dissipation system, wherein the heat dissipation system comprises a heat dissipation fan, and the heat dissipation fan can automatically adjust the rotating speed and automatically blow back and remove dust according to the temperature.
8. 8. The lithium battery underground mine car of claim 1, wherein the front travel drive motor and the rear travel drive motor are each configured to switch to a generator mode to convert kinetic energy to electrical energy during downhill or braking conditions of the vehicle, and to recharge the battery pack via an energy recovery circuit; The transmission system further comprises a brake resistor module which is connected in series in the energy recovery circuit; the braking resistor module is configured to switch on the circuit when the current or voltage in the energy recovery circuit exceeds a preset threshold value, and convert the surplus electric energy into heat energy consumption.
9. 9. The lithium battery underground mine car of claim 1, wherein the front and rear portions of the frame assembly are each provided with at least one traction point.
10. 10. The lithium battery underground mine car according to any one of claims 1 to 9, further comprising an electrical system including a controller electrically connected to the battery pack, the forward travel drive motor, the backward travel drive motor, and the hydraulic system for regulating operation of each of the actuators based on vehicle status information.

Description

Lithium battery underground mine car Technical Field The invention belongs to the technical field of engineering machinery, and particularly relates to a lithium battery underground mine car. Background As global mining activities continue to extend into deep, complex geological condition areas, underground mine transportation equipment faces more stringent technical challenges and environmental requirements. The traditional underground mine car is long-term dependent on a diesel engine as a power source, and has the advantages of stable power output, long endurance mileage and the like, but the inherent defects are increasingly remarkable, firstly, a large amount of harmful tail gas such as nitrogen oxides, particulate matters and the like is generated when the internal combustion engine works and is continuously accumulated in an underground tunnel with limited ventilation condition, the occupational health and the safe production environment of miners are seriously endangered, secondly, the diesel power system has a complex structure, a plurality of precise subsystems such as a high-pressure oil circuit, turbocharging, tail gas aftertreatment and the like are involved, the failure rate is remarkably increased under the severe working conditions of high temperature, high humidity and dust diffusion, the maintenance and the need of frequent deep underground operation of professionals, and the spare part storage and maintenance cost is high. The electric mine car using the lithium ion battery as a power source has obvious advantages on the aspect of environmental protection, realizes zero tail gas emission of underground operation, but has series of defects in the actual popularization process, namely firstly, the output characteristics of the lithium battery pack are difficult to convert and match with the energy sources of the traditional hydraulic system and transmission mechanism, so that the power response is delayed and the continuous driving fluctuation is large, secondly, the underground mine environment has multiple risks of falling rocks, water seepage, gas accumulation and the like, the existing lithium ion mine car lacks specific protection in the aspects of explosion-proof design of a battery pack, high-voltage insulation protection, thermal runaway early warning and the like, the potential safety hazard is outstanding, and furthermore, the battery pack is huge and fixed in shape, is difficult to adapt to the special layout of underground roadway space constraint and extremely small turning radius, and the effective cargo carrying capacity is severely extruded. In addition, the ergonomic requirements of underground operation cannot be fully considered in the design stage of the existing vehicle model, namely, the space of a cab is depressed, the blind area of the visual field is large, the carriage structure cannot be optimally matched with the cross section of a narrow roadway, so that the loading and unloading efficiency is low, the fatigue degree of a driver is increased, and the overall efficiency and the safety level of mining are severely restricted. Disclosure of Invention The invention provides a lithium battery underground mine car, which aims at the problems existing in the prior art and can provide an integrated, intelligent and high-adaptability lithium battery underground mine car. In order to achieve the above purpose, the technical scheme provided by the invention is as follows: The invention provides a lithium battery underground mine car, comprising: The frame assembly comprises a front frame and a rear frame which are mutually hinged; a power system including a battery pack disposed on the front frame; the hydraulic system comprises a hydraulic power motor fixed on the front frame, a transfer case in transmission connection with the output end of the hydraulic power motor, and a working pump, a steering pump and a brake pump which are driven by the transfer case at the same time, wherein the working pump is communicated with the working hydraulic system, the steering pump is communicated with the steering hydraulic system, and the brake pump is communicated with the brake hydraulic system; The transmission system comprises a front walking driving motor and a rear walking driving motor which are used for driving the vehicle to run, and the output ends of the front walking driving motor and the rear walking driving motor are respectively in transmission connection with the front driving bridge and the rear driving bridge through transmission shafts; the cab assembly is fixed on the front frame; the carriage assembly is hinged on the rear frame and is driven to lift by the lifting oil cylinder. Optionally, the battery pack is internally integrated with a high-voltage distribution box, a liquid cooling liquid heating device for adjusting the temperature of the battery and a fire-fighting device. Optionally, the battery pack is lifted and fixed on the front frame, and the electrica