CN115675538A - New forms of energy monorail crane car - Google Patents

Abstract

The invention discloses a new energy monorail crane vehicle, and relates to the technical field of monorail crane vehicles. The power system comprises a hydraulic walking circuit and a direct-current explosion-proof motor, wherein the hydraulic walking circuit is a hydrostatic transmission circuit comprising a variable plunger pump and a hydraulic motor, the direct-current explosion-proof motor is connected with the variable plunger pump to drive the variable plunger pump to pump oil, the variable plunger pump is connected with the hydraulic motor to supply oil to the variable plunger pump, and the hydraulic motor is connected with a walking wheel to drive the walking wheel to rotate; the energy device comprises an explosion-proof storage battery and an energy continuing device, wherein the explosion-proof storage battery is connected with the direct-current explosion-proof motor to provide electric energy required by the operation of the direct-current explosion-proof motor, and the energy continuing device is connected with the explosion-proof storage battery to supplement the electric energy to the explosion-proof storage battery; the control system is in signal connection with the power system and the energy device. The new-energy monorail crane has the advantages of large traction force, strong climbing capability and long endurance.

Description

New forms of energy monorail crane car

Technical Field

The invention relates to the technical field of monorail cranes, in particular to a new-energy monorail crane.

Background

With the development of the underground coal mine auxiliary transportation equipment technology, the auxiliary transportation system of the monorail crane is an advanced transportation mode, is not influenced by the geological conditions of a roadway bottom plate, realizes the non-transfer and long-distance direct transportation of underground coal mine personnel, equipment, materials and the like from a lifting point to a using point, effectively improves the underground auxiliary transportation efficiency of coal mine enterprises, and reduces the number of underground auxiliary personnel and the occurrence rate of transportation accidents, so that the auxiliary transportation system of the monorail crane is more and more applied to the underground coal mine.

The monorail crane locomotive commonly used in China at present is mainly an explosion-proof diesel engine monorail crane locomotive which has the advantages of large climbing capacity, long endurance mileage, strong carrying capacity and the like, but the large explosion-proof diesel engine monorail crane locomotive has the problems of large noise, tail gas emission pollution and the like, and is influenced by roadway ventilation when applied to roadways with narrow and small cross section sizes under coal mines, noise and air pollution are particularly prominent, and physical and psychological health of monorail crane locomotive drivers and related auxiliary personnel is seriously influenced.

With the development of new energy, the explosion-proof special type explosion-proof storage battery monorail crane locomotive appears, but the problems of short endurance mileage, small climbing angle, large volume and heavy weight of the explosion-proof storage battery monorail crane locomotive exist, the transportation of medium-short distance personnel and light scattered auxiliary materials with the inclination angle of an underground roadway smaller than 15 degrees can only be met, the transportation of materials in the roadway with the large inclination angle cannot be realized, the charging time of the explosion-proof special type explosion-proof storage battery is long, and the application and popularization of the explosion-proof special type explosion-proof storage battery monorail crane locomotive are severely restricted.

In conclusion, how to solve the current situation that the endurance mileage of the anti-explosion special type anti-explosion storage battery monorail crane vehicle is short is a problem to be solved urgently by technical personnel in the field at present.

Disclosure of Invention

In view of this, the invention aims to provide a new energy monorail crane vehicle which greatly improves the endurance mileage of an explosion-proof storage battery monorail crane vehicle.

In order to achieve the above purpose, the invention provides the following technical scheme:

a new energy monorail crane vehicle comprises:

a traveling wheel;

the hydraulic traveling circuit is a hydrostatic transmission circuit comprising a variable plunger pump and a hydraulic motor, the direct-current explosion-proof motor is connected with the variable plunger pump to drive the variable plunger pump to pump oil, the variable plunger pump is connected with the hydraulic motor to supply oil to the hydraulic motor, and the hydraulic motor is connected with the traveling wheels to drive the traveling wheels to rotate;

the energy device comprises an explosion-proof storage battery and an energy continuing device, wherein the explosion-proof storage battery is connected with the direct-current explosion-proof motor to provide electric energy required by the operation of the direct-current explosion-proof motor, and the energy continuing device is connected with the explosion-proof storage battery to supplement the electric energy to the explosion-proof storage battery;

and the control system is in signal connection with the power system and the energy device.

Preferably, the energy continuing device is an explosion-proof diesel generator set and comprises an explosion-proof diesel engine and an explosion-proof generator, the explosion-proof diesel engine is connected with the explosion-proof generator and is used for driving the explosion-proof generator to generate electricity, and the explosion-proof generator is connected with the explosion-proof storage battery and is used for charging the explosion-proof storage battery.

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

Preferably, the explosion-proof generator is a compound direct current generator.

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

Preferably, the power system further comprises a transfer case, the direct-current explosion-proof motor is a high-speed direct-current explosion-proof motor, the high-speed direct-current explosion-proof motor is connected to the input hole of the transfer case, and the variable plunger pump is connected to the first output hole of the transfer case.

Preferably, the hydraulic walking circuit further comprises an oil supplementing pump, the oil supplementing pump is connected to the second output hole of the transfer case, and an oil outlet of the oil supplementing pump is connected to an oil supplementing port of the variable plunger pump.

Preferably, the hydraulic walking circuit further comprises a flushing valve group, and an oil inlet of the flushing valve group is connected to an auxiliary oil outlet of the variable plunger pump.

Preferably, the system further comprises a speed sensor, an inclination angle sensor and a pressure sensor, wherein the speed sensor is arranged at the top of the power system and used for detecting the advancing speed of the monorail crane, the inclination angle sensor is arranged on the locomotive and used for detecting the inclination angle of the section, and the pressure sensor is arranged at an oil outlet of the variable plunger pump and used for detecting the oil pressure of the hydraulic walking loop;

the speed sensor, the inclination angle sensor and the pressure sensor are all in signal connection with the control system.

Preferably, the hydraulic walking circuit further comprises a first electric control explosion-proof proportional pressure reducing valve and a second electric control explosion-proof proportional pressure reducing valve, the variable plunger pump is a two-way variable plunger pump, an oil inlet of the first electric control explosion-proof proportional pressure reducing valve is connected with an oil inlet of the second electric control explosion-proof proportional pressure reducing valve, a working oil port of the first electric control explosion-proof proportional pressure reducing valve is connected with a working oil port of the second electric control explosion-proof proportional pressure reducing valve, and a variable mechanism of the two-way variable plunger pump is used for controlling the oil flowing direction of the two-way variable plunger pump.

Under the control of a control system, the energy continuing device supplements electric energy for the explosion-proof storage battery, the explosion-proof storage battery supplies power to the direct-current explosion-proof motor, the direct-current explosion-proof motor drives the variable plunger pump to pump oil under the drive of electric power so as to supply oil to the hydraulic motor, and the traveling wheels rotate under the drive of the hydraulic motor so that the monorail crane can normally travel.

The energy continuation device charges the explosion-proof storage battery, so that the endurance mileage of the new-energy monorail crane is greatly improved; the direct-current explosion-proof motor is adopted to supply power to the variable plunger pump, and a link of converting direct current into alternating current is not needed in the middle, so that more energy is saved to improve the endurance mileage; by using the hydrostatic transmission technology, the driving traction force and the climbing capacity of the monorail crane are effectively improved, so that the monorail crane can run in a complex roadway for a long distance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic illustration of a powertrain configuration according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an explosion-proof diesel engine generator set according to an embodiment of the present invention;

fig. 4 is a partially enlarged schematic view of an embodiment of the present invention.

In fig. 1-4, the reference numerals include:

1 is a walking wheel;

2, a power system, 21, a direct-current explosion-proof motor, 22, a hydraulic walking circuit, 221, a variable plunger pump, 222, 223, an oil supplementing pump, 224, a flushing valve group, 225, a first auxiliary pump, 226, a second auxiliary pump and 23, wherein the power system is a power system;

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

4 is a control system, 5 is a speed sensor, 6 is an inclination angle sensor, 7 is a web plate, 8 is a bearing wheel, 9 is a pull rod, and 10 is a motor lifting beam.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a new energy monorail crane vehicle, which greatly improves the endurance mileage of an explosion-proof storage battery monorail crane vehicle.

Referring to fig. 1 to 3, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention; FIG. 2 is a schematic illustration of a powertrain configuration in accordance with an embodiment of the present invention; FIG. 3 is a schematic structural diagram of an explosion-proof diesel engine generator set according to an embodiment of the present invention; fig. 4 is a partially enlarged schematic view of an embodiment of the present invention.

The invention provides a new energy monorail crane vehicle which comprises traveling wheels 1, a power system 2, an energy device 3 and a control system 4.

The power system 2 comprises a hydraulic walking circuit 22 and a direct-current explosion-proof electric motor 21, the hydraulic walking circuit 22 is a hydrostatic transmission circuit comprising a variable plunger pump 221 and a hydraulic motor 222, the direct-current explosion-proof electric motor 21 is connected with the variable plunger pump 221 to drive the variable plunger pump to pump oil, the variable plunger pump 221 is connected with the hydraulic motor 222 to supply oil to the variable plunger pump, and the hydraulic motor 222 is connected with the walking wheel 1 to drive the walking wheel to rotate; the energy device 3 comprises an explosion-proof storage battery 31 and an energy continuing device 32, wherein the explosion-proof storage battery 31 is connected with the direct-current explosion-proof motor 21 to provide electric energy required by the operation of the direct-current explosion-proof motor, and the energy continuing device 32 is connected with the explosion-proof storage battery 31 to supplement the electric energy to the explosion-proof storage battery 31; the control system 4 is in signal connection with the power system 2 and the energy device 3.

Specifically, under the control of the control system 4, the explosion-proof storage battery 31 outputs electric energy to drive the direct-current explosion-proof motor 21 to operate, a motor shaft of the direct-current explosion-proof motor 21 rotates under the drive of the electric energy, so that the variable plunger pump 221 is driven to pump oil, the oil is directly conveyed to the hydraulic motor 222 through a hydraulic pipeline, the traveling wheels 1 are driven to rotate by the rotation of the hydraulic motor 222, and the traveling of the new-energy monorail crane vehicle is realized.

As shown in figure 1, a plurality of traveling wheels 1 are arranged at the head, the tail and the middle part of the new-energy monorail crane, and under the action of a control system 4, the traveling wheels 1 are controlled to rotate or stop rotating, so that the new-energy monorail crane has different traveling states.

Preferably, the walking wheel 1 is a friction wheel and the surface friction body is a structure made of modified polyurethane, and the walking wheel 1 is antistatic and flame-retardant, has a large friction coefficient with the web 7, and has high tensile strength and long service life.

Preferably, the explosion-proof storage battery 31 is an explosion-proof lithium ion storage battery, which has a long life, is environmentally friendly and safe, but other types of storage batteries may be used as long as they can be charged and discharged. In addition, a plurality of explosion-proof storage batteries 31 can be arranged, part of the explosion-proof storage batteries 31 can supply power for the new-energy monorail crane when the new-energy monorail crane works, and the rest of the explosion-proof storage batteries 31 are reserved.

The energy charging device 32 is added to charge the explosion-proof battery 31, and the energy charging device 32 may be a special charger for the explosion-proof battery 31, a diesel engine-driven generator, or a gasoline engine-driven generator, and the like, as long as various forms of energy can be converted into electric energy to charge the explosion-proof battery 31.

It should be noted that when a special charger for the explosion-proof storage battery 31 is adopted, the explosion-proof storage battery 31 can be charged when the new energy monorail crane stops for a long time; the diesel engine or the gasoline engine is adopted to drive the generator and the like, so that the explosion-proof storage battery 31 can be charged while the new-energy monorail crane works. The additional energy continuation device 32 enables the new energy monorail crane to have more available energy, so that the endurance mileage is effectively improved.

Preferably, as shown in fig. 1, the explosion-proof battery 31 uses the motor lifting beam 10, so that a part of the variable displacement plunger pump 221 is branched to drive the motor lifting beam 10, the lifting device uses a hydraulic hoist, and the motor lifting beam 10 is also suitable for lifting materials, and under the control of the control system 4, the free configuration of the lifting height can be realized according to the roadway height, and the control is accurate, the work is stable, the reliability is high, and the safety is high.

Preferably, the power system 2 is arranged in one bearing box, the energy continuing device 32 is arranged in the other bearing box, the explosion-proof storage battery 31 is arranged in the other bearing box, the power system 2 and the energy continuing device 32 are arranged on two sides of the explosion-proof storage battery 31 and are located at a position, close to the middle, of the new-energy monorail crane vehicle, the layout is reasonable, hydraulic pipelines and wire harnesses can be arranged conveniently, other arbitrary arrangement modes can be adopted, and the functions can be achieved.

In addition, when the explosion-proof storage battery 31 is an explosion-proof lithium ion storage battery, an acid-resistant insulating layer and a ventilation liner plate can be adhered between the explosion-proof storage battery 31 and the bottom and the inner wall of the bearing box, and the thickness of the acid-resistant insulating layer enables the insulation resistance of the explosion-proof storage battery to be not less than five mega ohms.

Further, the power system 2, the energy continuing device 32 and the explosion-proof storage battery 31 are respectively and independently arranged in respective bearing boxes to form modules, other parts can also be divided into modules to be arranged and integrated through assembly, for example, an independent cab, a sensor bearing vehicle and the like are formed, the assembly is convenient, it is required to be described that the positions of the modules which are relatively independent can be arranged according to the positions shown in fig. 1, the modules are connected through the pull rod 9 and can be automatically assembled, the modules can be located at any positions, and the functions of the new-energy monorail crane vehicle can be realized.

The control system 4 can carry out signal transmission with the power system 2 and the energy device 3, and the advancing driving process of the new-energy monorail crane is realized under the control of the control system 4. The control system 4 may be a general control system 4 for controlling the above-mentioned devices or systems connected thereto, and the control system 4 may also include a central control system and sub-control systems respectively configured for the power system 2 and the energy device 3, and the sub-control systems perform signal transmission with the general central control system so as to realize centralized control. Alternatively, the sub-control system may be a self-contained control system 4 having a structure of the power system 2 and the energy device 3, or a separately configured control system 4 connected thereto.

When the structure is used, when the electric quantity of the explosion-proof storage battery 31 is insufficient, the control system 4 can be used for controlling the energy continuing device 32 to start running and charging the explosion-proof storage battery 31, so that the new energy monorail crane has enough electric quantity for the new energy monorail crane to use; when the electric quantity of the explosion-proof storage battery 31 is sufficient, the control system 4 is used for controlling the energy continuing device 32 to stop running, so that the intelligent control on the allowable electric quantity of the explosion-proof storage battery 31 is realized, the overcharge or the overdischarge of the explosion-proof storage battery 31 is avoided, and the service life of the explosion-proof storage battery 31 is effectively prolonged.

The variable plunger pump 221 is directly driven by the direct-current explosion-proof motor 21, the explosion-proof storage battery 31 directly supplies power, the link of converting alternating current into direct current is not needed in the middle, when the new-energy monorail crane vehicle runs on a downhill road section, the direct-current explosion-proof motor 21 reversely drags, partial mechanical energy can be converted into electric energy to be stored, the new-energy monorail crane vehicle is more energy-saving, and under the condition of the same electric quantity, more energy can be saved so as to improve the endurance mileage.

The hydraulic walking circuit 22 uses a hydrostatic transmission technology, so that the hydraulic walking circuit 22 has the characteristic of high working pressure, the driving traction force and the climbing capacity of the monorail crane are effectively improved, and the monorail crane can run in a complex roadway for a long distance.

Preferably, the variable plunger pump 221 is used for pumping oil, and an oil inlet and an oil outlet of the variable plunger pump can be changed, so that the flowing direction of the oil in the hydraulic walking loop 22 is changed, and the advancing direction of the new-energy monorail crane vehicle is changed; moreover, the variable plunger pump 221 has a pressure adjusting function, the flow of the variable plunger pump 221 can be adjusted and controlled within the output pressure range according to the load, under the control of the control system 4, the intelligent control on the new energy monorail crane can be realized, and the functions of automatic driving control, anti-holding control, power matching, starting reliability, stable reversing of the locomotive, stepless speed regulation and the like are realized.

On the basis of the above embodiment, the energy continuing device 32 is an explosion-proof diesel generator set, and includes an explosion-proof diesel engine 321 and an explosion-proof generator 322, the explosion-proof diesel engine 321 is connected with the explosion-proof generator 322 for driving the explosion-proof generator to generate electricity, and the explosion-proof generator 322 is connected with the explosion-proof storage battery 31 for charging the explosion-proof storage battery.

The explosion-proof diesel generator set has mature technology, and the diesel generator has the advantages of high energy utilization rate, easy storage of diesel, quick response, easy maintenance and the like, so preferably, the explosion-proof diesel generator set is used as the energy continuing device 32, the explosion-proof generator 322 is connected with the explosion-proof diesel engine 321 in a flexible or rigid connection manner, mechanical energy generated by combustion of diesel by the explosion-proof diesel engine 321 is absorbed by the explosion-proof generator 322, and electric energy is finally generated, so that the explosion-proof storage battery 31 is charged.

As shown in fig. 3, a diesel engine control system 3211 and a generator control system 3221 are provided, and may be self-contained sub-control systems of the structures of the explosion-proof diesel engine 321 and the explosion-proof generator 322, or independently configured sub-control systems connected to a general central control system, for controlling the operation of the explosion-proof diesel generator set; the fuel tank 3212 is communicated with a combustion chamber of the explosion-proof diesel engine 321 through an oil pipe to provide fuel oil required by operation for the explosion-proof diesel engine 321; air is conveyed to a combustion chamber of the explosion-proof diesel engine 321 through a pipeline so that the combustion chamber has enough oxygen to participate in combustion, and an air filter 3213 is arranged at any position of the pipeline, namely an air inlet pipe is connected with an air inlet of the air filter 3213, an air outlet pipe is connected with an air outlet of the air filter 3213, impurities such as dust in the air are filtered out, and a clean running environment is provided for the explosion-proof diesel engine 321; can produce tail gas behind the explosion-proof diesel engine 321 burning diesel oil, use the gas outlet of tail gas water pipe 3215 connection explosion-proof diesel engine 321 and the air inlet of tail gas water tank 3214 to exhaust tail gas water tank 3214, cool down tail gas under the effect of the inside cooling water of tail gas water tank 3214, prevent that high temperature tail gas from producing the spark, and utilize moisturizing case 3216 to carry out the moisturizing or trade water to the cooling water in the tail gas water tank 3214.

It should be noted that the exhaust gas water pipe 3215 is a double-layer sleeve, the inner-layer pipeline is used for circulating the exhaust gas, and cooling water is filled between the outer-layer pipeline and the inner-layer pipeline to pre-cool the exhaust gas, so as to prevent the surface temperature of the outer-layer pipeline from exceeding a preset temperature, for example, to ensure that the surface temperature of the outer-layer pipeline does not exceed 150 ℃.

The diesel engine cooling water radiator 3217 is connected to the explosion-proof diesel engine 321 through a pipeline, and cools the cooling water inside the explosion-proof diesel engine 321 and then conveys the cooling water back to the explosion-proof diesel engine 321 through the pipeline, so that the cooling water is always at a lower temperature to maintain a better cooling effect, and thus more heat generated by the explosion-proof diesel engine 321 is dissipated, and the explosion-proof diesel engine 321 works in a lower temperature environment.

The diesel intercooler 3218 is connected to an air inlet of the explosion-proof diesel engine 321, two ports of the connected pipelines are connected with flanges correspondingly, and the like, so that high-pressure air to be combusted, which is input into the explosion-proof diesel engine 321, is subjected to cooling treatment to increase the dissolved oxygen of the air, and fuel oil in the explosion-proof diesel engine 321 is fully combusted; the starting motor 3222 is connected to the accumulator, and under the driving of 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 the combustible gas self-ignite, and the explosion-proof diesel engine 321 is rapidly started. The series of settings enable the explosion-proof diesel generator set to run more safely and smoothly, and lay a foundation for intelligent control of the new-energy monorail crane.

According to the actual auxiliary transportation working condition of the monorail crane under the complex high-risk well, the occupation ratio of a roadway or a downhill section of the monorail crane in the whole transportation route is fully considered, the occupation ratio of heavy-load operation and light-load operation of the monorail crane in the whole transportation cycle is analyzed, preferably, an explosion-proof diesel engine generator set selects an explosion-proof diesel engine 321 with the power being 1/4-1/2 of the conventional explosion-proof monorail crane power, and the purposes of reducing the discharge amount of the new-energy monorail crane and improving the noise pollution of the monorail crane are achieved. Certainly, the power of the explosion-proof diesel engine generator set is not limited to the power, and during actual design, the power can be selected according to the actual roadway working condition of the new-energy monorail crane locomotive, so that the purposes of energy conservation and emission reduction are achieved.

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

Preferably, the 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 realize the separation of pressure establishment and an injection process, the change of oil injection pressure along with the rotating speed of an engine is avoided, the oil injection control is more flexible, the oil injection pressure fluctuation is small, the injection pressure control precision is higher, the mutual influence among oil injection nozzles is small, the oil injection quantity control is accurate, and the pre-injection and the post-injection can be realized, so that the oil injection characteristic shape is optimized, the noise of the diesel engine is reduced, and the discharge quantity of waste gas is greatly reduced. Of course, any other type of explosion-proof diesel engine 321 may be used, such as a single-pump explosion-proof diesel engine, as long as the requirements of the setting and use standards are met.

On the basis of the above embodiment, the explosion-proof generator 322 is a compound-excited dc generator.

Preferably, when the compound-excited dc generator is used, if the load current increases, the series-excited magnetomotive force of the compound-excited dc generator increases, the total magnetomotive force increases, and the induced electromotive force is further increased to compensate the demagnetization of the armature reaction and the voltage drop in the armature circuit, and the voltage at the generator terminal is kept substantially constant within a certain range, so that a stable voltage can be supplied to the explosion-proof storage battery 31, and the service life of the explosion-proof storage battery 31 is prolonged.

In addition to any of the embodiments described above, the hydraulic motor 222 is a low speed, high torque radial piston motor. Preferably, the hydraulic motor 222 adopts a low-speed large-torque radial plunger motor, can directly drive the travelling wheel 1, does not need a speed reduction link, effectively avoids mechanical speed reduction power loss, and improves the travelling efficiency of the new-energy monorail crane vehicle.

In addition to any of the above embodiments, the power system 2 further includes a transfer case 23, the dc explosion-proof motor 21 is a high-speed dc explosion-proof motor, the high-speed dc explosion-proof motor is connected to an input hole of the transfer case 23, and the variable displacement piston pump 221 is connected to a first output hole of the transfer case 23.

Specifically, as shown in fig. 2, the high speed dc explosion-proof motor is connected to the right input port of the transfer case 23, and the variable displacement piston pump 221 is mounted to the first output port of the lower left portion of the transfer case 23. The transfer case 23 shown in fig. 2 shows only one input port and one first output port, although it is also possible to use a transfer case 23 with multiple input ports and multiple first output ports to match the energy requirements and the number of variable displacement piston pumps 221 requirements.

Preferably, a high-speed direct-current explosion-proof motor is selected, the working efficiency is higher compared with that of a traditional low-speed motor, the transfer case 23 is matched with the high-speed direct-current explosion-proof motor to reduce the speed so as to achieve the preset speed of the new-energy monorail crane, the working efficiency is higher, the allowable power of the same explosion-proof storage battery 31 is the same, the new-energy monorail crane using the high-speed direct-current explosion-proof motor is stronger in power, larger in starting torque and better in speed regulation performance, the starting climbing capacity is stronger, and the cruising mileage is farther. Of course, any other types of explosion-proof motors can be adopted as long as the new energy monorail crane vehicle can be ensured to have higher working efficiency, larger starting torque and better speed regulation performance.

On the basis of the above embodiment, the hydraulic traveling circuit 22 further includes an oil supply pump 223, the oil supply pump 223 is connected to the second output hole of the transfer case 23, and an oil outlet of the oil supply pump 223 is connected to an oil supply port of the variable displacement plunger pump 221.

Specifically, as shown in fig. 2, the oil supply pump 223 is connected to a second output hole at the upper portion of the transfer case 23, and of course, the oil supply pump 223 and the variable plunger pump 221 may also exchange positions, at this time, the output hole at the upper portion is a first output hole, and the output hole at the lower portion is a second output hole, so that the output power of the dc explosion-proof motor 21 is decelerated and shunted by the transfer case 23 and then may be respectively transmitted to the variable plunger pump 221 and the oil supply pump 223, an oil outlet of the oil supply pump 223 is connected to an oil supply port of the variable plunger pump 221 through an oil supply filter, and external oil supply of the variable plunger pump 221 may be realized to maintain the oil pressure of the hydraulic circuit 22, cool the hydraulic circuit 22 with the oil supply, and prevent the variable plunger pump 221 from being damaged due to insufficient internal oil.

Further, a first auxiliary pump 225 is coaxially connected in series with the oil supplementing pump 223 in series, so that oil can be supplied to each auxiliary function loop of the hydraulic system of the new energy monorail crane, such as a brake release loop, a clamping loop, a drive switching loop, a hoisting loop, an energy accumulator liquid filling loop and the like, oil flowing out of the first auxiliary pump 225 can flow to the auxiliary function loop through a filter and a one-way valve which are arranged in series, when the auxiliary function loop needs oil supply, an electromagnet of an explosion-proof electromagnetic unloading overflow valve which is arranged in parallel with the one-way valve is controlled to be electrified through a control system 4, and oil supply control of the auxiliary function loop by the control system 4 is realized; when the auxiliary function loop does not need to supply oil, the electromagnet of the anti-explosion electromagnetic unloading overflow valve is controlled to lose power through the control system 4, the first auxiliary pump 225 is unloaded, and energy-saving control of the new-energy monorail crane is achieved.

Furthermore, a mechanical pressure gauge can be additionally arranged to display the working pressure of the first auxiliary pump 225 in real time for operation or maintenance personnel to observe of the new-energy monorail crane, or an auxiliary pump pressure sensor is additionally arranged to transmit the real-time working pressure value of the first auxiliary pump 225 to the control system 4 of the new-energy monorail crane, so that a foundation is laid for automatic control and intelligent adjustment of the power system 2 of the new-energy monorail crane.

On the basis of any of the above embodiments, the hydraulic walking circuit 22 further includes a flushing valve set 224, and an oil inlet of the flushing valve set 224 is connected to a secondary oil outlet of the variable displacement piston pump 221.

Specifically, an oil inlet of the flushing valve bank 224 is communicated with an auxiliary oil outlet of the variable plunger pump 221, so that part of oil flowing out of the variable plunger pump can flow out and flow into the flushing valve bank 224 through the auxiliary oil outlet, the part of hot oil flowing out can be cooled, the content of impurities such as residual particles in hydraulic oil of a hydrostatic transmission loop is reduced, and the service life of each component of a new-energy monorail crane walking loop can be prolonged.

Meanwhile, a second auxiliary pump 226 can be coaxially connected in series with the variable plunger pump 221, and a part of oil is branched from the variable plunger pump 221 and is supplied to a fan driving motor of a hydraulic oil radiator of the new-energy monorail crane vehicle, an explosion-proof motor and an explosion-proof engine cooling pump driving motor, so that hydraulic driving of all onboard facilities of the new-energy monorail crane vehicle is realized.

Preferably, as shown in fig. 2, the flushing valve set 224 is integrated at the working oil port of the variable displacement plunger pump 221, so that the hydraulic pump assembly of the new energy monorail crane is more compact in structure and convenient for maintenance of a hydraulic system.

On the basis of any one of the above embodiments, the system further comprises a speed sensor 5, an inclination angle sensor 6 and a pressure sensor, wherein the speed sensor 5 is arranged at the top of the power system 2 and is used for detecting the advancing speed of the monorail crane, the inclination angle sensor 6 is arranged at the head of the monorail crane and is used for detecting the inclination angle of the located road section, and the pressure sensor is arranged at the oil outlet of the variable displacement plunger pump 221 and is used for detecting the oil pressure of the hydraulic walking loop 22; the speed sensor 5, the inclination angle sensor 6 and the pressure sensor are in signal connection with the control system 4.

Specifically, as shown in fig. 1 and 4, the speed sensor 5 is located in a carrying vehicle disposed at an upper portion of a carrying box in which the power system 2 is located, and preferably, a magnetoelectric speed sensor is used, which is suitable for use in a dark environment such as a mine cave. The tilt sensor 6 is disposed in a carriage that moves along the rail web 7, and is disposed at an upper portion of the cab. The pressure sensor is used for detecting the pressure of the system hydraulic walking circuit 22, the hydraulic walking circuit 22 is a closed oil circuit, the oil pressure at each position of the whole hydraulic walking circuit 22 is equal, the pressure sensor is arranged at any position of the hydraulic walking circuit 22, preferably, the pressure sensor is arranged at the oil outlet of the variable plunger pump 221, the oil pressure of the hydraulic walking circuit 22 can be detected more quickly, the variable plunger pump 221 is stopped in time when a fault occurs, and the dry grinding condition of the variable plunger pump 221 is effectively avoided.

As shown in fig. 4, four carrier wheels 8 are symmetrically arranged along a rail web 7 on the upper part of the carrier vehicle bracket, and the bracket of the traveling wheel 1 is hung on the rail; the double hydraulic motors are symmetrically arranged relative to the rail web 7, the hydraulic motors 222 are respectively sleeved on a bent frame through mounting rabbets of the hydraulic motors, one end of the bent frame is hinged with a support through a mounting pin shaft, the other end of the bent frame is connected with a clamping oil cylinder connected with the travelling wheels 1, the travelling wheels 1 sleeved at the top ends of the hydraulic motors 222 are tightly attached to the rail web 7 under the action of the clamping oil cylinder, and the travelling wheels 1 roll along the side surfaces of the web 7, so that the new-energy monorail crane can advance.

The speed sensor 5 is used for detecting the real-time running speed value of the new-energy monorail crane locomotive, the inclination angle sensor 6 is used for detecting roadway inclination angle data during ascending and descending, the pressure sensor is used for detecting the oil pressure force of the hydraulic walking loop 22, the three can transmit the data to the control system 4, and therefore the control system 4 can adjust the new-energy monorail crane locomotive according to real-time working conditions.

For example, when the vehicle runs downhill, the explosion-proof motor 21 is driven reversely through controller operation and intelligent regulation control according to data transmitted to the control system 4 of the new-energy monorail crane vehicle by the inclination angle sensor 6, so that the potential energy of the new-energy monorail crane vehicle is recovered, and energy conservation and emission reduction of the new-energy monorail crane vehicle are realized; the intelligent operation is carried out according to the detection data of the speed sensor 5 and the pressure sensor, the working mode of the new energy monorail crane is automatically adjusted, and the functions of quickly and automatically adjusting the heavy load, the slow speed and the light load of the new energy monorail crane are realized by adopting measures of controlling the discharge capacity of the explosion-proof storage battery 31 or automatically controlling the electromagnet of the throwing drive electromagnetic directional valve to lose power and the like.

In conclusion, the control system 4 realizes intelligent control of the whole new energy monorail crane through analysis and operation of real-time data monitored by the sensors. Of course, the three sensors can be carried, and any other type of sensor can be carried, such as an electric quantity detection sensor and the like, as long as the operation data of the new energy monorail crane can be monitored. The intelligent regulation and the intelligent control can be regulated and controlled according to the prior technical scheme.

On the basis of any of the above embodiments, the hydraulic traveling circuit 22 further includes a first electronic control explosion-proof proportional pressure reducing valve and a second electronic control explosion-proof proportional pressure reducing valve, the variable displacement piston pump 221 is a bidirectional variable displacement piston pump, an oil inlet of the first electronic control explosion-proof proportional pressure reducing valve and an oil inlet of the second electronic control explosion-proof proportional pressure reducing valve are both connected to the oil replenishing pump 223, and a working oil port of the first electronic control explosion-proof proportional pressure reducing valve and a working oil port of the second electronic control explosion-proof proportional pressure reducing valve are both connected to the variable mechanism of the bidirectional variable displacement piston pump, and are used for controlling the oil flow direction of the bidirectional variable displacement piston pump.

Specifically, the oil supply pump 223 supplies oil to the first electric control explosion-proof proportional pressure reducing valve and the second electric control explosion-proof proportional pressure reducing valve, and under the control of the control system 4, when the first electric control explosion-proof proportional pressure reducing valve is powered on, oil pressure acts on the variable mechanism of the bidirectional variable plunger pump, so that the variable head of the bidirectional variable plunger pump rotates at a positive deflection angle, and the oil flowing direction of the bidirectional variable plunger pump is from the port a to the port B; when the second electric control explosion-proof proportional pressure reducing valve is electrified, the oil pressure acts on a variable mechanism of the bidirectional variable plunger pump, so that a variable head of the bidirectional variable plunger pump rotates at a negative deflection angle, the oil flowing direction of the bidirectional variable plunger pump is from a port B to a port A, and the function of quick reversing is achieved.

Further, shuttle valves can be arranged at oil outlets of the first electronic control explosion-proof proportional pressure reducing valve and the second electronic control explosion-proof proportional pressure reducing valve, pressure sensors are arranged at oil outlets of the shuttle valves, and the pressure sensors are in signal connection with the control system 4. The shuttle valve selects a large value of oil pressure output by the first electric control explosion-proof proportional pressure reducing valve and the second electric control explosion-proof proportional pressure reducing valve, the pressure sensor reads the large oil pressure and transmits an oil pressure signal to the control system 4, so that the control system 4 can obtain the actual condition of the variable mechanism, namely the working condition of the bidirectional variable plunger pump, and the control of the bidirectional variable plunger pump can be achieved.

Furthermore, reversing valves can be connected between the first electric control explosion-proof proportional pressure reducing valve and the two-way variable plunger pump and between the second electric control explosion-proof proportional pressure reducing valve and the two-way variable plunger pump. When the first electric control explosion-proof proportional pressure reducing valve and the second electric control 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, so that the control can be realized; when the new-energy monorail crane stops or the first electronic control explosion-proof proportional pressure reducing valve and the second electronic control explosion-proof proportional pressure reducing valve break down, the oil inlet of the reversing valve is communicated with the oil outlet, so that the first electronic control explosion-proof proportional pressure reducing valve and the second electronic control explosion-proof proportional pressure reducing valve can be unloaded, the bidirectional variable plunger pump is prevented from being in useless output, and the abnormal walking phenomenon is avoided.

As shown in figure 1, the control system 4 is arranged in a cab, and two cabs can be respectively arranged at the head part and the tail part of the new-energy monorail crane, so that reversing control is facilitated.

It should be noted that the terms "upper, lower" and "upper, lower, left and right" are defined below based on the drawings of the specification.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The new energy monorail crane provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a new forms of energy monorail crane car which characterized in that includes:

a traveling wheel (1);

the power system (2) comprises a hydraulic walking circuit (22) and a direct-current explosion-proof electric motor (21), the hydraulic walking circuit (22) is a hydrostatic transmission circuit comprising a variable displacement piston pump (221) and a hydraulic motor (222), the direct-current explosion-proof electric motor (21) is connected with the variable displacement piston pump (221) to drive the variable displacement piston pump to pump oil, the variable displacement piston pump (221) is connected with the hydraulic motor (222) to supply oil to the variable displacement piston pump, and the hydraulic motor (222) is connected with the walking wheel (1) to drive the walking wheel to rotate;

the energy device (3) comprises an explosion-proof storage battery (31) and an energy continuing device (32), the explosion-proof storage battery (31) is connected with the direct-current explosion-proof motor (21) to provide electric energy required by the operation of the direct-current explosion-proof motor, and the energy continuing device (32) is connected with the explosion-proof storage battery (31) to supplement the electric energy to the explosion-proof storage battery (31);

and the control system (4) is in signal connection with the power system (2) and the energy device (3).

2. The new-energy monorail crane locomotive according to claim 1, characterized in that the energy continuing device (32) is an explosion-proof diesel generator set, and comprises an explosion-proof diesel engine (321) and an explosion-proof generator (322), wherein the explosion-proof diesel engine (321) is connected with the explosion-proof generator (322) for driving the explosion-proof generator (322) to generate electricity, and the explosion-proof generator (322) is connected with the explosion-proof storage battery (31) for charging the explosion-proof storage battery.

3. The new-energy monorail crane vehicle as defined in claim 2, wherein the explosion-proof diesel engine (321) is a high-pressure common-rail injection type explosion-proof diesel engine.

4. The new-energy monorail crane locomotive according to claim 2, characterized in that the explosion-proof generator (322) is a compound direct current generator.

5. The new energy monorail crane vehicle of any one of claims 1-4, wherein the hydraulic motor (222) is a low-speed high-torque radial piston motor.

6. The new energy monorail crane locomotive according to any one of claims 1 to 4, characterized in that the power system (2) further comprises a transfer case (23), the DC explosion-proof motor (21) is a high-speed DC explosion-proof motor, the high-speed DC explosion-proof motor is connected to an input hole of the transfer case (23), and the variable displacement piston pump (221) is connected to a first output hole of the transfer case (23).

7. The new-energy monorail crane locomotive according to claim 6, characterized in that the hydraulic traveling circuit (22) further comprises an oil supplementing pump (223), the oil supplementing pump (223) is connected to the second output hole of the transfer case (23), and an oil outlet of the oil supplementing pump (223) is connected to an oil supplementing port of the variable displacement plunger pump (221).

8. The new energy monorail crane vehicle of any one of claims 1-4, characterized in that the hydraulic traveling circuit (22) further comprises a flushing valve bank (224), wherein an oil inlet of the flushing valve bank (224) is connected to a secondary oil outlet of the variable displacement piston pump (221).

9. The new energy monorail crane vehicle of any one of claims 1 to 4, further comprising a speed sensor (5), an inclination sensor (6) and a pressure sensor, wherein the speed sensor (5) is arranged at the top of the power system (2) and is used for detecting the traveling speed of the monorail crane vehicle, the inclination sensor (6) is arranged at a vehicle head and is used for detecting the inclination of a road section, and the pressure sensor is arranged at an oil outlet of the variable displacement plunger pump (221) and is used for detecting the oil hydraulic pressure of the hydraulic traveling circuit (22);

the speed sensor (5), the inclination angle sensor (6) and the pressure sensor are in signal connection with the control system (4).

10. The new-energy monorail crane locomotive according to any one of claims 1 to 4, wherein the hydraulic traveling circuit (22) further comprises 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 (221) is a two-way variable plunger pump, an oil inlet of the first electrically-controlled explosion-proof proportional pressure reducing valve and an oil inlet of the second electrically-controlled explosion-proof proportional pressure reducing valve are both connected with the oil supplementing pump (223), and an operating oil port of the first electrically-controlled explosion-proof proportional pressure reducing valve and an operating oil port of the second electrically-controlled explosion-proof proportional pressure reducing valve are both connected with a variable mechanism of the two-way variable plunger pump, and are used for controlling the oil flowing direction of the two-way variable plunger pump.

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