A new energy single-rail hoist locomotive

Abstract

The present invention discloses a new energy monorail crane locomotive, which relates to the technical field of monorail crane locomotives. The new energy monorail crane locomotive includes a running wheel, a power system, an energy device and a control system. Among them, the power system includes a hydraulic running circuit and a DC explosion-proof motor. The hydraulic running circuit is a hydrostatic transmission circuit including a variable piston pump and a hydraulic motor. The DC explosion-proof motor is connected to the variable piston pump to drive it to pump oil. The variable piston pump is connected to the hydraulic motor to supply oil to it. The hydraulic motor is connected to the running wheel to drive it to rotate; the energy device includes an explosion-proof battery and an energy-sustaining device. The explosion-proof battery is connected to the DC explosion-proof motor to provide the electric energy required for its operation. The energy-sustaining device is connected to the explosion-proof battery to supplement the electric energy to it; the control system is connected to the power system and the energy device by signal. The new energy monorail crane locomotive has large traction, strong climbing ability and long cruising range.

Description

Technical Field

[0001] The present invention relates to the technical field of single-rail hoist locomotives, and more specifically, to a new energy single-rail hoist locomotive. Background Art

[0002] With the development of the technical field of auxiliary transportation equipment in coal mines, the single-rail hoist locomotive auxiliary transportation system, as an advanced transportation method, is not affected by the geological conditions of the roadway floor, and realizes the non-transfer and long-distance direct transportation of personnel, equipment, materials, etc. in coal mines from the hoisting point to the use location, effectively improving the efficiency of auxiliary transportation in coal mines, reducing the number of auxiliary personnel underground and the incidence of transportation accidents. Therefore, the single-rail hoist locomotive auxiliary transportation system is more and more widely applied to coal mines.

[0003] At present, the commonly used single-rail hoist locomotives in China are mainly explosion-proof diesel single-rail hoist locomotives, which have the advantages of large climbing ability, long endurance mileage, strong carrying capacity, etc. However, large explosion-proof diesel single-rail hoist locomotives have problems such as high noise and exhaust gas pollution, and when applied in narrow roadway sections in coal mines, affected by roadway ventilation, noise and air pollution are particularly prominent, seriously affecting the physical and mental health of single-rail hoist locomotive drivers and related auxiliary personnel.

[0004] With the development of new energy, explosion-proof special-type explosion-proof battery single-rail hoist locomotives have emerged, but they have problems such as short endurance mileage, small climbing angle, large volume and self-weight of explosion-proof batteries, etc., and can only meet the transportation of medium and short-distance personnel and light and scattered auxiliary materials in underground roadways with an inclination angle less than 15 degrees, and cannot realize the material transportation in large-inclination roadways. Moreover, the charging time of explosion-proof special-type explosion-proof batteries is long, seriously restricting the application and popularization of explosion-proof special-type explosion-proof battery single-rail hoist locomotives.

[0005] In summary, how to solve the current situation of short endurance mileage of explosion-proof special-type explosion-proof battery single-rail hoist locomotives is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a new energy single-rail hoist locomotive, which greatly improves the endurance mileage of the explosion-proof battery single-rail hoist locomotive.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A new energy single-rail hoist locomotive, comprising:

[0009] Running wheels;

[0010] The power system includes a hydraulic walking circuit and a DC explosion-proof motor. The hydraulic walking circuit is a hydrostatic transmission circuit including a variable displacement piston pump and a hydraulic motor. The DC explosion-proof motor is connected to the variable displacement piston pump to drive it to pump oil. The variable displacement piston pump is connected to the hydraulic motor to supply oil to it. The hydraulic motor is connected to the walking wheels to drive them to rotate;

[0011] The energy device includes an explosion-proof battery and an energy replenishing device. The explosion-proof battery is connected to the DC explosion-proof motor to provide the electrical energy required for its operation. The energy replenishing device is connected to the explosion-proof battery to replenish electrical energy to it;

[0012] The control system is signal-connected to the power system and the energy device.

[0013] Preferably, the energy replenishing device is an explosion-proof diesel generator set, including an explosion-proof diesel engine and an explosion-proof generator. The explosion-proof diesel engine is connected to the explosion-proof generator to drive it to generate electricity. The explosion-proof generator is connected to the explosion-proof battery to charge it.

[0014] Preferably, the explosion-proof diesel engine is a high-pressure common rail injection type explosion-proof diesel engine.

[0015] Preferably, the explosion-proof generator is a compound excitation DC generator.

[0016] Preferably, the hydraulic motor is a low-speed high-torque radial piston motor.

[0017] Preferably, the power system further includes a transfer case. The DC explosion-proof motor is a high-speed DC explosion-proof motor. The high-speed DC explosion-proof motor is connected to the input hole of the transfer case. The variable displacement piston pump is connected to the first output hole of the transfer case.

[0018] Preferably, the hydraulic walking circuit further includes a charge pump. The charge pump is connected to the second output hole of the transfer case. The oil outlet of the charge pump is connected to the charge port of the variable displacement piston pump.

[0019] Preferably, the hydraulic walking circuit further includes a flushing valve group. The oil inlet of the flushing valve group is connected to the secondary oil outlet of the variable displacement piston pump.

[0020] Preferably, it further includes a speed sensor, an inclination sensor and a pressure sensor. The speed sensor is arranged at the top of the power system to detect the traveling speed of the single rail hoist locomotive. The inclination sensor is arranged at the front of the vehicle to detect the inclination of the road section. The pressure sensor is arranged at the oil outlet of the variable displacement piston pump to detect the oil pressure of the hydraulic walking circuit;

[0021] The speed sensor, the inclination sensor and the pressure sensor are all signal-connected to the control system.

[0022] Preferably, the hydraulic walking circuit further includes a first electrically controlled explosion-proof proportional pressure reducing valve and a second electrically controlled explosion-proof proportional pressure reducing valve. The variable plunger pump is a bidirectional variable plunger pump. The oil inlets of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the makeup oil pump. The working oil ports of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the variable mechanism of the bidirectional variable plunger pump, and are used to control the oil flow direction of the bidirectional variable plunger pump.

[0023] Under the control of the control system, the energy storage device of the new energy single rail hoist locomotive provided by the present invention replenishes electric energy for the explosion-proof storage battery. The explosion-proof storage battery supplies power to the DC explosion-proof motor. Driven by electricity, the DC explosion-proof motor drives the variable plunger pump to pump oil, so as to supply oil to the hydraulic motor. Driven by the hydraulic motor, the walking wheels can rotate, so that the single rail hoist locomotive can walk normally.

[0024] Among them, the energy storage device charges the explosion-proof storage battery, greatly improving the cruising range of the new energy single rail hoist locomotive; using a DC explosion-proof motor to supply power to the variable plunger pump, there is no need for a DC-to-AC conversion link in the middle, saving more energy to improve the cruising range; using hydrostatic transmission technology, effectively improving the driving traction force and climbing ability of the single rail hoist locomotive, so that it can run long distances in complex roadways. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment provided by the present invention;

[0027] Figure 2 It is a schematic diagram of the power assembly structure of a specific embodiment provided by the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the explosion-proof diesel generator set of a specific embodiment provided by the present invention;

[0029] Figure 4 It is a partially enlarged schematic diagram of a specific embodiment provided by the present invention.

[0030] Figures 1 - 4 Among them, the reference numerals include:

[0031] 1 is a walking wheel;

[0032] 2 is a power system, 21 is a DC explosion-proof motor, 22 is a hydraulic walking circuit, 221 is a variable piston pump, 222 is a hydraulic motor, 223 is a makeup oil pump, 224 is a flushing valve group, 225 is a first auxiliary pump, 226 is a second auxiliary pump, and 23 is a power takeoff;

[0033] 3 is an energy device, 31 is an explosion-proof battery, 32 is an energy storage device, 321 is an explosion-proof diesel engine, 3211 is a diesel engine control system, 3212 is a fuel tank, 3213 is an air filter, 3214 is an exhaust gas water tank, 3215 is an exhaust gas water pipe, 3216 is a makeup water tank, 3217 is a diesel engine cooling water radiator, 3218 is a diesel engine intercooler, 322 is an explosion-proof generator, 3221 is a generator control system, and 3222 is a starting motor;

[0034] 4 is a control system, 5 is a speed sensor, 6 is an inclination sensor, 7 is a web, 8 is a carrier wheel, 9 is a pull rod, and 10 is a motor lifting beam. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] The core of the present invention is to provide a new energy single-rail hoist locomotive, which greatly improves the endurance mileage of the explosion-proof battery single-rail hoist locomotive.

[0037] Please refer to Figures 1 to 3 , Figure 1 which is the overall structure diagram of the specific embodiment provided by the present invention; Figure 2 which is the power assembly structure diagram of the specific embodiment provided by the present invention; Figure 3 which is the explosion-proof diesel engine generator set structure diagram of the specific embodiment provided by the present invention; Figure 4 which is the partial enlarged diagram of the specific embodiment provided by the present invention.

[0038] The present invention provides a new energy single-rail hoist locomotive, including a walking wheel 1, a power system 2, an energy device 3, and a control system 4.

[0039] Among them, the power system 2 includes a hydraulic walking circuit 22 and a DC explosion-proof motor 21. The hydraulic walking circuit 22 is a hydrostatic transmission circuit including a variable piston pump 221 and a hydraulic motor 222. The DC explosion-proof motor 21 is connected to the variable piston pump 221 to drive it to pump oil. The variable piston pump 221 is connected to the hydraulic motor 222 to supply oil to it. The hydraulic motor 222 is connected to the walking wheel 1 to drive it to rotate; the energy device 3 includes an explosion-proof battery 31 and an energy replenishing device 32. The explosion-proof battery 31 is connected to the DC explosion-proof motor 21 to provide the electrical energy required for its operation. The energy replenishing device 32 is connected to the explosion-proof battery 31 to replenish electrical energy to it; the control system 4 is signal-connected to the power system 2 and the energy device 3.

[0040] Specifically, under the control of the control system 4, the explosion-proof battery 31 outputs electrical energy to drive the DC explosion-proof motor 21 to operate. The motor shaft of the DC explosion-proof motor 21 rotates under the drive of electrical energy, thereby driving the variable piston pump 221 to pump oil. The oil is directly transported to the hydraulic motor 222 through a hydraulic pipeline. The rotation of the hydraulic motor 222 drives the walking wheel 1 to rotate, realizing the advancement of the new energy monorail hoist locomotive.

[0041] As Figure 1 shown, the new energy monorail hoist locomotive is provided with multiple walking wheels 1 at the front end, rear end, and middle part. Under the action of the control system 4, the rotation or stoppage of each walking wheel 1 can be controlled, enabling the new energy monorail hoist locomotive to have different traveling states.

[0042] Preferably, the walking wheel 1 is a friction wheel and the surface friction body is made of modified polyurethane material. This walking wheel 1 has anti-static, flame-retardant, high friction coefficient with the web 7, high tensile strength, and long service life.

[0043] Preferably, the explosion-proof battery 31 adopts an explosion-proof lithium-ion battery, which has a long service life, is environmentally friendly, and safe. Of course, other types of batteries can also be used as long as they can be charged and discharged. In addition, multiple explosion-proof batteries 31 can be set. Some explosion-proof batteries 31 supply power to the new energy monorail hoist locomotive during operation, and the remaining explosion-proof batteries 31 are reserved.

[0044] An energy replenishing device 32 is added to charge the explosion-proof battery 31. The energy replenishing device 32 can be a special charger for the explosion-proof battery 31, a diesel engine-driven generator, a gasoline engine-driven generator, or other devices, as long as it can convert various forms of energy into electrical energy to charge the explosion-proof battery 31.

[0045] It should be noted that when using a special charger for the explosion-proof battery 31, it can charge the explosion-proof battery 31 when the new energy single-rail hoist locomotive is shut down for a long time; when using a diesel engine-driven generator or a gasoline engine-driven generator, etc., it can charge the explosion-proof battery 31 while the new energy single-rail hoist locomotive is working. The added energy storage device 32 enables the new energy single-rail hoist locomotive to have more available energy, thereby effectively increasing the cruising range.

[0046] Preferably, as Figure 1 shown, the explosion-proof battery 31 uses a motor lifting beam 10, which can make a variable displacement piston pump 221 divert a part of the flow to drive the motor lifting beam 10. Its lifting device uses a hydraulic hoist, and the above-mentioned motor lifting beam 10 is also applicable to the lifting of materials. Under the control of the control system 4, the lifting height can be freely configured according to the roadway height, and the control is accurate, the operation is stable, the reliability is high, and the safety is strong. Of course, other arbitrary lifting beams can also be used, such as an oil cylinder lifting beam, as long as it can lift objects.

[0047] Preferably, the power system 2 is placed in a carrying box, the energy storage device 32 is placed separately in another carrying box, and the explosion-proof battery 31 is placed separately in another carrying box. The power system 2 and the energy storage device 32 are placed on both sides of the explosion-proof battery 31 and are located near the middle of the new energy single-rail hoist locomotive. Such a layout is more reasonable and convenient for arranging hydraulic pipelines and wire harnesses. Of course, other arbitrary arrangement methods can also be used, as long as the above functions can be achieved.

[0048] In addition, when the explosion-proof battery 31 is selected as an explosion-proof lithium-ion battery, an acid-resistant insulating layer and a ventilation lining board can be pasted between the explosion-proof battery 31 and the bottom and inner wall of the carrying box where it is located, and the thickness of the acid-resistant insulating layer makes its insulation resistance not less than five megohms. Further, a control system 4 can be equipped for the explosion-proof battery 31 to monitor the usage situation of the explosion-proof battery 31 in real time and adjust it to avoid the explosion-proof battery 31 being used in a high-temperature and unsafe environment, thereby increasing the service life of the explosion-proof battery 31.

[0049] Furthermore, the power system 2, the energy storage device 32, and the explosion-proof battery 31 are respectively placed separately in their own carrying boxes to form modules. Other parts can also be divided into modules and assembled into a whole, such as forming an independent cab, a sensor carrying vehicle, etc., which is convenient for assembly. It should be noted that the positions of the relatively independent modules can be arranged according to the Figure 1 positions shown, and the modules are connected by a pull rod 9, or they can be assembled by themselves. The modules can be in any position, as long as the functions of the new energy single-rail hoist locomotive can be achieved.

[0050] The control system 4 can transmit signals to the power system 2 and the energy device 3, and the driving process of the above new energy monorail hoist locomotive is realized under the control of the control system 4. The control system 4 can be a general control system 4 for controlling the devices or systems connected thereto. The control system 4 can also include a central control system and sub-control systems respectively configured for the power system 2 and the energy device 3. The sub-control systems all transmit signals to the general central control system to achieve centralized control. Optionally, the above sub-control systems can be the control systems 4 built in the power system 2, the energy device 3 and other structures, or the control systems 4 that are connected thereto and independently configured.

[0051] When the explosion-proof battery 31 has insufficient power during use of the above structure, the control system 4 can be used to control the energy storage device 32 to start running and charge the explosion-proof battery 31, so that the new energy monorail hoist locomotive has sufficient power for its use; when the explosion-proof battery 31 has sufficient power, the control system 4 is used to control the energy storage device 32 to stop running, realizing intelligent control of the allowable power consumption of the explosion-proof battery 31, preventing overcharging or over-discharging of the explosion-proof battery 31, and effectively extending the service life of the explosion-proof battery 31.

[0052] The DC explosion-proof motor 21 is directly used to drive the variable displacement piston pump 221 and is directly powered by the explosion-proof battery 31, without the need for an AC-to-DC conversion link in the middle. Moreover, when the new energy monorail hoist locomotive is driving on a downhill section, the DC explosion-proof motor 21 can be used for counter-dragging, so that part of the mechanical energy can be converted into electrical energy and stored, making the new energy monorail hoist locomotive more energy-efficient. In the case of the same amount of power, more energy can be saved to increase the cruising range.

[0053] The hydraulic walking circuit 22 uses hydrostatic transmission technology, making the hydraulic walking circuit 22 have the characteristic of high working pressure, effectively improving the driving traction force and climbing ability of the monorail hoist locomotive, so that it can run long distances in complex roadways.

[0054] Preferably, a variable displacement piston pump 221 is used to pump oil, and its oil inlet and outlet can be changed, so that the flow direction of the oil in the hydraulic walking circuit 22 changes, and further the traveling direction of the new energy monorail hoist locomotive is changed; moreover, the variable displacement piston pump 221 has a pressure regulating function, and the flow rate of the variable displacement piston pump 221 can be regulated within the output pressure range according to the load. Under the control of the control system 4, intelligent control of the new energy monorail hoist locomotive can be realized, and functions such as automatic drive control, anti-stalling control, power matching, starting reliability, smooth locomotive commutation and stepless speed regulation can be achieved.

[0055] Based on the above embodiments, the energy replenishing device 32 is an explosion-proof diesel generator set, including an explosion-proof diesel engine 321 and an explosion-proof generator 322. The explosion-proof diesel engine 321 is connected to the explosion-proof generator 322 to drive it to generate electricity, and the explosion-proof generator 322 is connected to the explosion-proof battery 31 to charge it.

[0056] The technology of the explosion-proof diesel generator set is relatively mature, and the diesel generator has the advantages of high energy utilization rate, easier storage of diesel, fast response, easy maintenance, etc. Therefore, preferably, the explosion-proof diesel generator set is used as the energy replenishing device 32. The explosion-proof generator 322 is connected to the explosion-proof diesel engine 321, either flexibly or rigidly. The mechanical energy generated by the explosion-proof diesel engine 321 burning diesel is absorbed by the explosion-proof generator 322, and finally electrical energy is generated to charge the explosion-proof battery 31.

[0057] As Figure 3 shown, a diesel engine control system 3211 and a generator control system 3221 are provided. They can be the built-in sub-control systems of structures such as the explosion-proof diesel engine 321 and the explosion-proof generator 322, or the independently configured sub-control systems connected to the overall central control system, used to control the operation of the explosion-proof diesel generator set; the fuel tank 3212 is connected to the combustion chamber of the explosion-proof diesel engine 321 through a fuel pipe to provide the fuel required for the operation of the explosion-proof diesel engine 321; air is conveyed to the combustion chamber of the explosion-proof diesel engine 321 through a pipeline so that it has enough oxygen to participate in combustion, and an air filter 3213 is provided at any position of the pipeline, that is, the intake pipe is connected to the intake port of the air filter 3213, and the exhaust pipe is connected to the exhaust port of the air filter 3213 to filter out dust and other impurities in the air and provide a clean operating environment for the explosion-proof diesel engine 321; after the explosion-proof diesel engine 321 burns diesel, exhaust gas will be generated. The exhaust gas water pipe 3215 is used to connect the exhaust port of the explosion-proof diesel engine 321 and the intake port of the exhaust gas water tank 3214, so as to discharge the exhaust gas to the exhaust gas water tank 3214. Under the action of the cooling water inside the exhaust gas water tank 3214, the exhaust gas is cooled to prevent high-temperature exhaust gas from generating sparks, and the make-up water tank 3216 is used to replenish or change the cooling water in the exhaust gas water tank 3214.

[0058] It should be noted that the above exhaust gas water pipe 3215 is a double-layer sleeve. The inner pipeline is used for the flow of exhaust gas, and the space between the outer pipeline and the inner pipeline is filled with cooling water to pre-cool the exhaust gas and prevent the surface temperature of the outer pipeline from exceeding its preset temperature. For example, ensure that its surface temperature does not exceed 150 °C.

[0059] The diesel engine cooling water radiator 3217 is connected to the explosion-proof diesel engine 321 through pipelines. After cooling the cooling water inside the explosion-proof diesel engine 321, it is then transported back to the explosion-proof diesel engine 321 through pipelines, keeping the cooling water at a relatively low temperature all the time to maintain a good cooling effect, thereby dissipating the excess heat generated by the explosion-proof diesel engine 321 and enabling the explosion-proof diesel engine 321 to operate in a relatively low-temperature environment.

[0060] The diesel engine intercooler 3218 is connected to the air inlet of the explosion-proof diesel engine 321. After the pipelines are connected, the corresponding flanges of the two ports are connected, etc. It cools the high-pressure air to be burned and input into the explosion-proof diesel engine 321 to increase the oxygen solubility of the air, enabling the fuel in the explosion-proof diesel engine 321 to burn fully. The starting motor 3222 is connected to the accumulator. Driven by hydraulic pressure, the starting motor 3222 drives the crankshaft of the explosion-proof diesel engine 321 to rotate, so that the piston compresses the combustible gas to make it self-ignite, thus quickly starting the explosion-proof diesel engine 321. The above series of settings enable the explosion-proof diesel generator set to operate more safely and smoothly, and lay a foundation for the intelligent control of the new energy single-track hoist locomotive.

[0061] According to the actual working conditions of the auxiliary transportation of the single-track hoist locomotive in complex and high-risk underground wells, fully considering the proportion of the flat or downhill sections of the single-track hoist locomotive in the whole transportation route, and analyzing the proportion of the heavy-load operation and light-load operation of the single-track hoist locomotive in the whole transportation cycle. Preferably, the explosion-proof diesel engine generator set selects the explosion-proof diesel engine 321 with a power only 1 / 4 to 1 / 2 of the installed power of the conventional explosion-proof diesel engine single-track hoist locomotive, achieving the purpose of reducing the emissions of the new energy single-track hoist locomotive and improving the noise pollution of the single-track hoist locomotive. Of course, the power selection of the explosion-proof diesel engine generator set is not limited to this. During actual design, it can be selected according to the actual roadway conditions used by the new energy single-track hoist locomotive to achieve the purpose of energy conservation and emission reduction.

[0062] On the basis of the above embodiments, the explosion-proof diesel engine 321 is a high-pressure common rail injection type explosion-proof diesel engine.

[0063] Preferably, a high-pressure common rail injection type explosion-proof diesel engine is selected to drive the explosion-proof generator 322. The high-pressure common rail injection type explosion-proof diesel engine can separate the pressure establishment and injection processes, avoid the change of injection pressure with the engine speed, make the injection control more flexible, have small injection pressure fluctuations, high injection pressure control accuracy, small mutual influence between injection nozzles, accurate fuel injection quantity control, and can achieve pre-injection and post-injection, thereby optimizing the shape of the injection characteristics, reducing the noise of the diesel engine and greatly reducing the emissions of exhaust gas. Of course, other arbitrary types of explosion-proof diesel engines 321 can also be used, such as unit pump type explosion-proof diesel engines, as long as they meet the setting and use standard requirements.

[0064] On the basis of the above embodiments, the explosion-proof generator 322 is a compound excitation DC generator.

[0065] Preferably, when a compound-wound DC generator is used, if the load current increases, the series excitation magnetomotive force of the compound-wound DC generator increases accordingly, and the total magnetomotive force is enhanced. Furthermore, the induced electromotive force is increased to compensate for the demagnetizing effect of the armature reaction and the voltage drop in the armature circuit, and the terminal voltage of the generator is basically kept constant within a certain range. Thus, a stable voltage can be provided to the explosion-proof storage battery 31, and the service life of the explosion-proof storage battery 31 can be increased.

[0066] Based on any of the above embodiments, the hydraulic motor 222 is a low-speed high-torque radial piston motor. Preferably, the hydraulic motor 222 adopts a low-speed high-torque radial piston motor, which can directly drive the traveling wheel 1 without a deceleration link, effectively avoiding mechanical deceleration power loss and improving the traveling efficiency of the new energy monorail hoist locomotive.

[0067] Based on any of the above embodiments, the power system 2 further includes a power take-off box 23. The DC explosion-proof motor 21 is a high-speed DC explosion-proof motor, and the high-speed DC explosion-proof motor is connected to the input hole of the power take-off box 23, and the variable piston pump 221 is connected to the first output hole of the power take-off box 23.

[0068] Specifically, as Figure 2 shown, the high-speed DC explosion-proof motor is connected to the right input hole of the power take-off box 23, and the variable piston pump 221 is installed at the first output hole at the lower left of the power take-off box 23. Figure 2 As shown in

[0069] Preferably, a high-speed DC explosion-proof motor is selected, which has a higher working efficiency compared with traditional low-speed motors. Matched with it, the power take-off box 23 is used for deceleration to reach the predetermined speed of the new energy monorail hoist locomotive, and the working efficiency is relatively high. With the same allowable power consumption of the explosion-proof storage battery 31, the new energy monorail hoist locomotive using the high-speed DC explosion-proof motor has a more powerful power, a larger starting torque, better speed regulation performance, stronger starting and climbing ability, and a longer cruising range. Of course, any other type of explosion-proof motor can also be adopted as long as it can ensure that the new energy monorail hoist locomotive has a high working efficiency, a large starting torque and good speed regulation performance.

[0070] Based on the above embodiments, the hydraulic traveling circuit 22 further includes a make-up oil pump 223. The make-up oil pump 223 is connected to the second output hole of the power take-off box 23, and the oil outlet of the make-up oil pump 223 is connected to the make-up oil port of the variable piston pump 221.

[0071] Specifically, as Figure 2As shown in the figure, the make-up oil pump 223 is connected to the second output hole at the upper part of the transfer case 23. Of course, the make-up oil pump 223 and the variable displacement piston pump 221 can also exchange positions. At this time, the upper output hole is the first output hole, and the lower output hole is the second output hole. Then, the output power of the DC explosion-proof motor 21 can be transmitted to the variable displacement piston pump 221 and the make-up oil pump 223 respectively after being decelerated and split by the transfer case 23. The oil outlet of the make-up oil pump 223 is connected to the make-up oil port of the variable displacement piston pump 221 through a make-up oil filter, which can realize the external make-up oil of the variable displacement piston pump 221 to maintain the oil pressure of the hydraulic circuit 22, cool the hydraulic circuit 22 by supplying cold oil, and prevent the variable displacement piston pump 221 from being damaged due to insufficient internal oil.

[0072] Furthermore, a first auxiliary pump 225 is coaxially connected in series with the make-up oil pump 223, which can supply oil to each auxiliary function circuit of the hydraulic system of the new energy single-rail hoist locomotive, such as the brake release circuit, the clamping circuit, the drive switching circuit, the lifting circuit, the accumulator filling circuit, etc. The oil flowing out of the first auxiliary pump 225 can flow to the auxiliary function circuit through the filter and check valve arranged in series. When the auxiliary function circuit needs to be supplied with oil, the electromagnet of the explosion-proof electromagnetic unloading overflow valve arranged in parallel with the check valve is energized through the control system 4 to realize the oil supply control of the control system 4 to the auxiliary function circuit; when the auxiliary function circuit does not need to be supplied with oil, the electromagnet of the explosion-proof electromagnetic unloading overflow valve can be de-energized through the control system 4 to unload the first auxiliary pump 225, realizing the energy-saving control of the new energy single-rail hoist locomotive.

[0073] Even further, a mechanical pressure gauge can be added to display the working pressure of the first auxiliary pump 225 in real time for the operators or maintenance personnel of the new energy single-rail hoist locomotive to observe, or an auxiliary pump pressure sensor can be added to transmit the real-time working pressure value of the first auxiliary pump 225 to the control system 4 of the new energy single-rail hoist locomotive, laying a foundation for realizing the automatic control and intelligent regulation of the power system 2 of the new energy single-rail hoist locomotive.

[0074] Based on any of the above embodiments, the hydraulic walking circuit 22 further includes a flushing valve group 224, and the oil inlet of the flushing valve group 224 is connected to the secondary oil outlet of the variable displacement piston pump 221.

[0075] Specifically, when the oil inlet of the flushing valve group 224 is connected to the auxiliary oil outlet of the variable displacement piston pump 221, a part of the oil flowing out of the variable displacement piston pump can be diverted and flow into the flushing valve group 224 through the auxiliary oil outlet, dissipating heat from this part of the diverted hot oil, and at the same time reducing the content of impurities such as residual particulate matter in the hydraulic oil of the hydrostatic transmission circuit, which can improve the service life of each component in the walking circuit of the new energy single-rail hoist locomotive.

[0076] At the same time, a second auxiliary pump 226 can be coaxially connected in series with the variable piston pump 221, and a portion of the oil can be diverted from the variable piston pump 221 to supply the hydraulic oil radiator fan drive motor and explosion-proof motor, and explosion-proof engine cooling pump drive motor of the new energy monorail crane locomotive, so as to realize the hydraulic drive of various onboard facilities of the new energy monorail crane locomotive.

[0077] Preferably, Figure 2 As shown, the flushing valve group 224 is integrated into the working oil port of the variable piston pump 221, so that the hydraulic pump assembly structure of the new energy monorail crane locomotive is more compact and convenient for hydraulic system maintenance.

[0078] On the basis of any of the above embodiments, it also includes a speed sensor 5, an inclination sensor 6 and a pressure sensor. The speed sensor 5 is arranged on the top of the power system 2 to detect the travel speed of the monorail crane locomotive. The inclination sensor 6 is arranged on the front of the locomotive to detect the inclination of the road section. The pressure sensor is arranged at the oil outlet of the variable piston pump 221 to detect the oil pressure of the hydraulic travel circuit 22; the speed sensor 5, the inclination sensor 6, and the pressure sensor are all connected to the control system 4 signal.

[0079] Specifically, Figure 1 and Figure 4 As shown, the speed sensor 5 is located in a carrier vehicle disposed on the upper part of the carrier box where the power system 2 is located. Preferably, a magnetoelectric speed sensor is used, which is suitable for dark environments such as mines. The inclination sensor 6 is disposed in a carrier vehicle on the upper part of the cab. It should be noted that the above-mentioned carrier vehicle is a trolley that moves along the rail web 7. The pressure sensor is used to detect the pressure of the system hydraulic travel circuit 22, and the hydraulic travel circuit 22 is a closed oil circuit. The oil pressure at each part of the entire hydraulic travel circuit 22 is equal. A pressure sensor can be set at any point in the hydraulic travel circuit 22. Preferably, the pressure sensor is set at the oil outlet of the variable piston pump 221, so that the oil pressure of the hydraulic travel circuit 22 can be detected more quickly. When a fault occurs, the variable piston pump 221 can be stopped in time, and dry grinding of the variable piston pump 221 can be effectively avoided.

[0080] like Figure 4 As shown, four load-bearing wheels 8 are symmetrically arranged on the upper part of the support of the carrier vehicle and along the track web 7, and the support of the traveling wheel 1 is hung on the track; dual hydraulic motors are symmetrically arranged relative to the track web 7, and the hydraulic motors 222 are respectively mounted on the bent frames through their mounting stoppers, one end of the bent frame is hinged to the support through a mounting pin, and the other end is connected to the clamping cylinder connected to the traveling wheel 1. Under the action of the clamping cylinder, the traveling wheel 1 mounted on the top of the hydraulic motor 222 is tightly fitted on the track web 7, and the traveling wheel 1 rolls along the side surface of the web 7, so that the new energy monorail crane locomotive can move.

[0081] The speed sensor 5 is used to detect the real-time operating speed value of the new energy single-rail hoist locomotive. The inclination sensor 6 is used to detect the roadway inclination data when going uphill and downhill. The pressure sensor is used to detect the oil pressure of the hydraulic walking circuit 22. The three can transmit the above data to the control system 4, so that the control system 4 can adjust the new energy single-rail hoist locomotive according to the real-time working conditions.

[0082] For example, when going downhill, according to the data transmitted by the inclination sensor 6 to the control system 4 of the new energy single-rail hoist locomotive, through the operation and intelligent adjustment control of the controller, the explosion-proof motor 21 is reversely dragged, so as to recover the locomotive potential energy of the new energy single-rail hoist locomotive, realizing energy conservation and emission reduction of the new energy single-rail hoist locomotive; according to the detection data of the speed sensor 5 and the pressure sensor, intelligent operation is carried out, and the working mode of the new energy single-rail hoist locomotive is autonomously adjusted. By taking measures such as controlling the discharge amount of the explosion-proof battery 31 or automatically controlling the energization and de-energization of the electromagnet of the drive electromagnetic reversing valve, the function of autonomously adjusting the heavy load and slow speed and the light load and fast speed of the new energy single-rail hoist locomotive is realized.

[0083] To sum up, the control system 4 realizes the intelligent control of the entire new energy single-rail hoist locomotive through the analysis and operation of the real-time data monitored by the above sensors. Of course, not only the above three sensors can be installed, but also any other type of sensors can be installed, such as the power detection sensor, etc., as long as they can monitor the operation data of the new energy single-rail hoist locomotive. The above intelligent adjustment and intelligent control can be adjusted according to the existing technical solutions.

[0084] On the basis of any one of the above embodiments, the hydraulic walking circuit 22 further includes a first electrically controlled explosion-proof proportional pressure reducing valve and a second electrically controlled explosion-proof proportional pressure reducing valve. The variable piston pump 221 is a bidirectional variable piston pump. The oil inlet of the first electrically controlled explosion-proof proportional pressure reducing valve and the oil inlet of the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the make-up oil pump 223. The working oil ports of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the variable mechanism of the bidirectional variable piston pump, and are used to control the oil flow direction of the bidirectional variable piston pump.

[0085] Specifically, the make-up oil pump 223 supplies oil to the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve. Under the control of the control system 4, assuming that the first electrically controlled explosion-proof proportional pressure reducing valve is energized, the oil pressure acts on the variable mechanism of the bidirectional variable piston pump, so that the variable head of the bidirectional variable piston pump rotates at a positive deflection angle, so that the oil flow direction of the bidirectional variable piston pump is from port A to port B; when the second electrically controlled explosion-proof proportional pressure reducing valve is energized, the oil pressure acts on the variable mechanism of the bidirectional variable piston pump, so that the variable head of the bidirectional variable piston pump rotates at a negative deflection angle, so that the oil flow direction of the bidirectional variable piston pump is from port B to port A, playing a function of rapid commutation. Of course, other arbitrary devices can also be used here, as long as the change of the oil flow direction can be realized.

[0086] Further, a shuttle valve can be arranged at the oil outlets of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve, a pressure sensor can be arranged at the oil outlet of the shuttle valve, and the pressure sensor is signal-connected to the control system 4. The shuttle valve selects the larger value of the oil pressures output by the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve. The pressure sensor reads the larger oil pressure and transmits the oil pressure signal to the control system 4, so that the control system 4 can reach the control of the bidirectional variable plunger pump according to the actual situation of the variable mechanism, that is, the working condition of the bidirectional variable plunger pump.

[0087] Furthermore, a reversing valve can be connected between the first electrically controlled explosion-proof proportional pressure reducing valve and the bidirectional variable plunger pump, and between the second electrically controlled explosion-proof proportional pressure reducing valve and the bidirectional variable plunger pump. When the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve control the bidirectional variable plunger pump, the oil inlet of the reversing valve is communicated with the working oil port, and the above control can be realized; when the new energy single-track hoisting locomotive stops or the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve fail, the oil inlet of the reversing valve is communicated with the oil outlet, so that the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve can be unloaded, preventing the bidirectional variable plunger pump from making useless output and eliminating the abnormal walking phenomenon.

[0088] As Figure 1 shown, the control system 4 is placed in the cab. Two cabs can be arranged at the head and tail of the new energy single-track hoisting locomotive respectively, which is convenient for reversing control.

[0089] It should be noted that the "upper part, lower part" and the orientation words "up, down, left, right" described below are all defined based on the accompanying drawings of the specification.

[0090] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0091] The above has introduced in detail a new energy single-track hoisting locomotive provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A new energy single-rail hoist locomotive, characterized in that, it includes: traveling wheels (1); a power system (2), including a hydraulic travel circuit (22) and a DC explosion-proof motor (21). The hydraulic travel circuit (22) is a hydrostatic transmission circuit including a variable piston pump (221) and a hydraulic motor (222). The DC explosion-proof motor (21) is connected to the variable piston pump (221) to drive it to pump oil. The variable piston pump (221) is connected to the hydraulic motor (222) to supply oil to it. The hydraulic motor (222) is connected to the traveling wheels (1) to drive them to rotate; an energy device (3), including an explosion-proof battery (31) and an energy replenishing device (32). The explosion-proof battery (31) is connected to the DC explosion-proof motor (21) to provide the electric energy required for its operation. The energy replenishing device (32) is connected to the explosion-proof battery (31) to replenish electric energy to it; a control system (4), which is signal-connected to the power system (2) and the energy device (3); the power system (2) further includes a power take-off box (23). The DC explosion-proof motor (21) is a high-speed DC explosion-proof motor, and the high-speed DC explosion-proof motor is connected to the input hole of the power take-off box (23). The variable piston pump (221) is connected to the first output hole of the power take-off box (23); the hydraulic travel circuit (22) further includes a makeup oil pump (223). The makeup oil pump (223) is connected to the second output hole of the power take-off box (23), and the oil outlet of the makeup oil pump (223) is connected to the makeup oil port of the variable piston pump (221); the hydraulic travel circuit (22) further includes a first electrically controlled explosion-proof proportional pressure reducing valve and a second electrically controlled explosion-proof proportional pressure reducing valve. The variable piston pump (221) is a two-way variable piston pump. The inlet oil ports of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the makeup oil pump (223). The working oil ports of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve are both connected to the variable mechanism of the two-way variable piston pump to control the oil flow direction of the two-way variable piston pump; a shuttle valve is arranged at the oil outlet of the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve. A pressure sensor is arranged at the oil outlet of the shuttle valve, and the pressure sensor is signal-connected to the control system (4); a reversing valve is connected between the first electrically controlled explosion-proof proportional pressure reducing valve and the two-way variable piston pump, and between the second electrically controlled explosion-proof proportional pressure reducing valve and the two-way variable piston pump; when the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve control the two-way variable piston pump, the inlet oil port of the reversing valve is communicated with the working oil port; when the new energy single-rail hoist locomotive stops or the first electrically controlled explosion-proof proportional pressure reducing valve and the second electrically controlled explosion-proof proportional pressure reducing valve fail, the inlet oil port of the reversing valve is communicated with the outlet oil port.

2. The new energy single-rail hoist locomotive according to claim 1, characterized in that, The energy replenishing device (32) is an explosion-proof diesel generator set, which includes an explosion-proof diesel engine (321) and an explosion-proof generator (322). The explosion-proof diesel engine (321) is connected to the explosion-proof generator (322) to drive it to generate electricity, and the explosion-proof generator (322) is connected to the explosion-proof storage battery (31) to charge it.

3. The new energy single-rail hoist locomotive according to claim 2, characterized in that the explosion-proof diesel engine (321) is a high-pressure common rail injection type explosion-proof diesel engine.

4. The new energy single-rail hoist locomotive according to claim 2, characterized in that the explosion-proof generator (322) is a compound excitation DC generator.

5. The new energy single-rail hoist locomotive according to any one of claims 1 to 4, characterized in that the hydraulic motor (222) is a low-speed high-torque radial piston motor.

6. The new energy single-rail hoist locomotive according to any one of claims 1 to 4, characterized in that the hydraulic walking circuit (22) further includes a flushing valve group (224), and the oil inlet of the flushing valve group (224) is connected to the secondary oil outlet of the variable piston pump (221).

7. The new energy single-rail hoist locomotive according to any one of claims 1 to 4, characterized in that it further includes a speed sensor (5), an inclination sensor (6) and a pressure sensor. The speed sensor (5) is arranged at the top of the power system (2) to detect the traveling speed of the single-rail hoist locomotive. The inclination sensor (6) is arranged at the front of the vehicle head to detect the inclination of the section where it is located. The pressure sensor is arranged at the oil outlet of the variable piston pump (221) to detect the oil pressure of the hydraulic walking circuit (22); the speed sensor (5), the inclination sensor (6) and the pressure sensor are all signal-connected to the control system (4).

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