Intelligent driving system for polar region high-horsepower traction equipment

Abstract

The invention relates to the technical field of mechanical engineering, in particular to an intelligent driving system for polar region high-horsepower traction equipment, which comprises a frame assembly, a power system assembly and a track assembly. Through the arrangement of the power system assembly and the crawler belt assembly, under the cooperation of a radiator and a cooling fan in the power system assembly, when the temperature is lower than a set threshold value, the zero rotating speed of the fan can be achieved, the starting load of an engine is reduced, meanwhile, when the rotating speed of the engine is lower than the standard value, butt joint with a pump is intelligently disconnected, and the service life of the pump is prolonged. According to the invention, no-load starting is realized, the starting difficulty is further reduced, and an intelligent driving system can be formed through the combination of the power system, the walking pump and the crawler belt assembly to provide the effects of high rotating speed, large torque and guarantee of driving stability and traction reliability.

Description

Technical Field

[0001] The present application relates to the field of mechanical engineering technology, and in particular to an intelligent drive system for high-horsepower traction equipment in polar regions. Background Art

[0002] Currently, polar inland transportation, ice and snow runways and road construction all require high-power crawler traction equipment that is suitable for the low temperature environment of Antarctica and can travel on the snow as power.

[0003] In view of the above-mentioned related technologies, it is particularly urgent to develop a drive system for crawler traction equipment suitable for polar environments. Summary of the Invention

[0004] The purpose of this application is to provide an intelligent drive system for high-horsepower traction equipment in polar regions to solve the problems raised in the above background technology.

[0005] The present application provides an intelligent drive system for polar high-horsepower traction equipment, which adopts the following technical solution: the polar high-horsepower traction equipment intelligent drive system is installed on a frame assembly, and includes a first travel pump, a second travel pump and a dual-pump four-motor structure, and also includes a power system assembly and a track assembly. The power system assembly includes an engine, a coupling and a transmission box. The output end of the engine is connected to a coupling, and the coupling is connected to the transmission box. When the engine speed is lower than the speed combined with the coupling, the engine does not output power to the transmission box. At this time, the first travel pump and the second travel pump do not work. The track assembly includes a travel motor and a drive wheel. The output ends of the first travel pump and the second travel pump are connected to the travel motor. A transmission box is arranged between the travel motor and the drive wheel. The output end of the travel motor is connected to the input end of the reducer, and the drive wheel is connected to the output end of the reducer, and they are connected in a torque-transmitting manner so as to rotate together at different speeds.

[0006] Preferably, the frame assembly includes a front frame and a rear frame, and the track assembly is installed on the front frame and the rear frame, and there are at least one track assembly installed on the front frame and the rear frame respectively. The front frame and the rear frame are connected by an intermediate hinged rotation structure, and the track assemblies installed on the front frame and the rear frame can generate relative movement through the hinged rotation structure.

[0007] Preferably, the frame assembly further includes a front counterweight, which is fixed to the front end of the front frame to control the center of gravity of the equipment and maintain a reasonable pressure between the track assembly and the ground.

[0008] By adopting the above technical solution, the front counterweight can be fixed to the front end of the front frame, and the center of gravity of the entire machine can be scientifically adjusted to ensure that the equipment maintains a stable posture under complex working conditions. The reasonable control of the center of gravity distribution effectively reduces the risk of overturning due to center of gravity shift during operation, which is especially suitable for scenarios requiring high-precision operation or carrying heavy loads.

[0009] Preferably, the track assembly also includes an upper support, a lower support, a supporting wheel, a guide wheel, a track skin and a tensioning wheel. The lower end of the upper support is fastened to the lower support, and the lower end of the lower support is equipped with a supporting wheel. One end of the lower support is equipped with a guide wheel, and the other end of the lower support is equipped with a tensioning wheel. The outside of the guide wheel and the tensioning wheel are restrained by the track skin, and the driving wheel is provided with a plurality of grooves on its circumference for engaging with the segments of the track so that the track assembly can move together but at different speeds.

[0010] Preferably, the internal circulating water circuit of the engine can circulate by itself, or form a large circulation system with the internal circulating water circuit of the hydraulic oil tank, that is, forming a two-way closed-loop circulation heating structure. At the same time, the large circulation system is also externally connected to a heating boiler, and the large circulation controls the pipeline switch through a valve.

[0011] By adopting the above technical solution, that is, the engine adopts a dual closed-loop circulation heating structure, its internal water circuit can be independently self-circulated or linked with the hydraulic oil tank water circuit to form a large circulation system, and cooperate with the external heating boiler and valve control pipeline to realize multi-mode intelligent thermal management. During cold start, the self-circulation mode quickly absorbs engine heat to shorten the preheating time and reduce low-temperature wear; the large circulation mode uses waste heat to preheat the hydraulic oil or balance the heat load under low-temperature conditions through two-way heat exchange between the engine and the hydraulic system, significantly improving energy utilization. The external heating equipment can actively inject heat source in extremely cold environments to solve the problems of cold start difficulties and high hydraulic oil viscosity, and ensure reliable operation of the equipment. The system intelligently switches the circulation mode through the valve: self-circulation is prioritized at low load to reduce energy consumption, and the large circulation is started at high load to enhance heat dissipation. The dynamic strategy takes into account cooling efficiency and environmental emission requirements. In addition, the design reduces carbon deposits, pump and valve sticking and component wear through rapid heating and hydraulic oil preheating, extending the life of the engine and hydraulic system and reducing maintenance costs.

[0012] Preferably, the articulated rotation structure includes at least one steering push rod, and under the action of the steering push rod, the front frame and the rear frame have a relative rotation angle of not less than 5°.

[0013] By adopting the above-mentioned technical solution, that is, through the mechanical transmission of the steering push rod, hydraulic or electronic power is efficiently converted into controllable deflection between the frames, rapid steering with a minimum turning radius can be achieved in narrow spaces or rugged terrain, while avoiding tire slippage or ground scraping caused by the rigid connection of the traditional integral frame; the articulated structure distributes the load through a controllable turning angle of more than 5° during steering, so that the front and rear frames form a dynamic balance support, which not only reduces the local overload of the single-sided track or wheel, but also improves the anti-overturning ability through center of gravity offset compensation; in addition, the modular design of the steering push rod supports multi-level thrust adjustment, which can adapt to the sensitive steering during light-load transportation and the stable fine-tuning requirements during heavy-load excavation. Combined with wear-resistant articulated bearings and sealing protection, it significantly reduces the mechanical wear and hydraulic system leakage risks caused by frequent steering, thereby extending the service life.

[0014] Preferably, the driving wheel includes a wheel body, a steel rim, and a rib plate. The meshing groove is arranged in multiple sections. The wheel body and the steel rim are connected by radially evenly distributed reinforcing rib plates. The driving wheel meshing groove is provided with a curved lead-in section. The middle of the driving wheel is connected to the reducer through a connecting bolt to transmit power.

[0015] By adopting the above-mentioned technical solution, that is, the wheel body and the steel rim are connected with radially evenly distributed reinforcing ribs, and stress dispersion is achieved through mechanical topology optimization, the risk of wheel deformation and fatigue fracture under heavy load impact or high-frequency transmission conditions is effectively reduced, thereby extending the service life; the design of multi-segment meshing grooves combined with curved surface introduction sections can not only accurately guide the track pins to engage smoothly to reduce friction loss, but also disperse the bite force by increasing the contact area, avoiding cracking or wear of local grooves due to stress concentration; the center of the drive wheel is rigidly connected to the reducer through high-strength connecting bolts to ensure the stability of power transmission and coaxial accuracy.

[0016] Preferably, the track skin contact area is greater than 0.5 m2, and the track skin contact pressure is less than 65 kPa.

[0017] By adopting the above-mentioned technical solution, the equipment can be effectively prevented from sinking or slipping in geological environments with weak pressure-bearing capacity such as swamps, snow or sand, thereby ensuring operational stability. Secondly, the smaller specific pressure value can reduce structural damage to the surface of the construction site, which is especially suitable for special environments such as farmland and lawns that require surface protection. At the same time, the optimized load distribution can also reduce the energy consumption of the power system, improve transmission efficiency, and extend the service life of the track and suspension system.

[0018] Preferably, the power system assembly further includes a radiator and a cooling fan, which are installed at the front end of the engine. A sensor is installed on the outside of the power system assembly, and the status of the sensor can start or interrupt the radiator and the cooling fan.

[0019] By adopting the above technical solution, the radiator and the cooling fan can be matched with the coupling to achieve no-load starting of the traction equipment.

[0020] Preferably, the system also includes an intelligent interface, and the intelligent interface can be connected to a camera, a GPS satellite antenna signal, a 4G network card and an external interface.

[0021] By adopting the above technical solutions, up to 8 cameras can be connected, supporting image processing, 360-degree surround view system and visual navigation; two GPS satellite antenna signals can be connected, supporting path planning and Beidou + GPS navigation; the built-in 4G network card can realize seamless data upload to the cloud, remote download, monitoring, big data analysis and processing; the external interface can support standard protocols such as TCP, RS232, CAN, etc., so as to realize seamless data upload to the cloud, support remote download, monitoring and big data analysis and processing.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up a power system assembly and a crawler track assembly. In particular, with the cooperation of the cooling fan inside the power system assembly, the fan speed can be reduced to zero when the temperature is below the set threshold, thereby reducing the engine starting load. At the same time, when the engine speed is lower than the standard, the connection with the dual pumps is intelligently disconnected to achieve no-load starting, further reducing the starting difficulty. In addition, the combination of the first travel pump, the second travel pump and the crawler track assembly can form a two-pump four-motor system to provide high speed and high torque, ensuring driving stability and traction reliability. 2. This application is equipped with a cooling fan, an engine, a clutch coupling, and a transfer case. The cooling fan is linked to the engine cold start system. When the temperature is below a set threshold, the cooling fan runs at zero speed, reducing the engine starting load. The diesel tank, filter element, and pipeline electric heating system are also equipped to improve cold start efficiency. At the same time, when the engine speed is below the standard, the clutch coupling automatically disengages and disconnects from the dual pumps, thereby achieving no-load starting and further reducing the starting difficulty. 3. This application sets up a first travel pump, a second travel pump and a crawler assembly, wherein the crawler assembly can form a triangular crawler structure through the internal guide wheel, track skin, travel motor, drive wheel and tensioner. When the problem of driving slip occurs, the displacement of the first travel pump and the second travel pump can be adjusted to limit the driving speed of the whole vehicle. At the same time, the displacement of the travel motor can be reduced to ensure the ability to overcome obstacles and get out of trouble, so that the whole vehicle is in a low speed and high torque state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 It is a schematic diagram of the front view structure of this application; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the power system of this application; Figure 4 This is a schematic diagram of the three-dimensional structure of the crawler assembly of this application; Figure 5 This is the principle diagram of hydraulic control walking of this application; Figure 6 This is the preheating startup block diagram of this application.

[0024] Explanation of the accompanying drawings: 1. Front frame; 2. Steering push rod; 3. Rear frame; 4. Front counterweight; 5. Power system assembly; 51. Radiator; 52. Cooling fan; 53. Engine; 54. Clutch coupling; 55. Transfer case; 6. First travel pump; 7. Second travel pump; 8. Track assembly; 81. Upper support; 82. Lower support; 83. Support roller; 84. Guide wheel; 85. Track skin; 86. Travel motor; 87. Drive wheel; 88. Tensioner. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0026] An intelligent drive system for high-horsepower traction equipment in polar regions, referring to Figure 1 and Figure 2 , the polar high-horsepower traction equipment intelligent drive system is installed on the frame assembly, including a first travel pump 6, a second travel pump 7 and a dual-pump four-motor structure, and also includes a power system assembly 5 and a track assembly 8. The power system assembly 5 includes an engine 53, a coupling 54, and a transmission box 55. The output end of the engine 53 is connected to the coupling 54, and the coupling 54 is connected to the transmission box 55. When the speed of the engine 53 is lower than the speed of the combination with the coupling 54, the engine 53 does not output power to the transmission box 55. At this time, the first travel pump 6 and the second travel pump 7 do not work to reduce the starting load and achieve a low-temperature rapid cold start of the engine 53. The output ends of the first travel pump 6 and the second travel pump 7 are connected to the travel motor 86 of the track assembly 8, and a transmission box is arranged between the travel motor 86 and the drive wheel 87 of the track assembly 8 to transmit torque. The reducer input end is connected to the output end of the travel motor 86, and the reducer output end is connected to the drive wheel 87. They are connected in a torque-transmitting manner so as to rotate together at different speeds.

[0027] Among them, the power system assembly 5 also includes a radiator 51 and a cooling fan 52, which are installed at the front end of the engine 53. A sensor is installed on the outside of the power system assembly 5. The sensor status can start or interrupt the radiator 51 and the cooling fan 52, that is, the radiator 51 and the cooling fan 52 can cooperate with the coupling 54 to achieve no-load starting of the traction equipment.

[0028] Among them, the first travel pump 6 and the second travel pump 7 are connected in parallel through pipelines, and the first travel pump 6 and the second travel pump 7 are symmetrically installed along both sides of the bottom end of the front frame 1, thereby forming a dual-pump structure to provide stable power input for each subsequent track assembly 8 to meet the vehicle's high speed, high torque and other working conditions.

[0029] Among them, the input shaft of the transfer case 55 and the clutch coupling 54 are splined, and the output shaft of the engine 53 and the input end of the clutch coupling 54 are fixedly connected by flange bolts, ensuring that the power of the engine 53 is synchronized to the dual pumps and balanced power distribution. That is, the seamless connection between the input shaft of the transfer case 55 and the clutch coupling 54 is achieved through the spline connection, which can not only withstand high torque loads, but also its self-centering characteristics can effectively compensate for assembly errors and ensure the coaxial accuracy of the transmission shaft system during high-speed operation; at the same time, the output shaft of the engine 53 and the input end of the clutch coupling 54 are rigidly connected by flange bolts, relying on the pre-tightening force of high-strength bolts to form a stable power interface, completely eliminating the radial clearance or circumferential sliding risks that may be caused by traditional keyway connections; the synergistic effect of the two connection methods enables the power output of the engine 53 to be transmitted to the dual hydraulic pump system with zero phase difference, which not only maintains the speed synchronization between the dual pumps, but also achieves dynamic power balance through the precise torque distribution of the transfer case 55.

[0030] Among them, the internal circulation water circuit of the engine 53 can be self-circulating, or form a large circulation system with the internal circulation water circuit of the hydraulic oil tank, that is, forming a two-way closed-loop circulation heating structure. At the same time, the large circulation system is also externally connected to the heating boiler, and the large circulation controls the pipeline switch through the valve. In this way, a closed-loop circulation heating structure can be formed to realize the intelligent cold start of the engine, that is, the engine 53 adopts a dual closed-loop circulation heating structure, and its internal water circuit can be independently self-circulating, and can also be linked with the hydraulic oil tank water circuit to form a large circulation system, and cooperate with the external heating boiler and valve control pipeline to realize multi-mode intelligent thermal management. During cold start, the self-circulation mode quickly absorbs engine heat to shorten the warm-up time and reduce low-temperature grinding. loss; the large circulation mode uses waste heat to preheat the hydraulic oil or balance the heat load under low temperature conditions through two-way heat exchange between the engine and the hydraulic system, significantly improving energy utilization. External heating equipment can actively inject heat sources in extremely cold environments to solve the problems of cold start difficulties and high viscosity of hydraulic oil, ensuring reliable operation of equipment. The system intelligently switches the circulation mode through valves: self-circulation is prioritized at low loads to reduce energy consumption, and large circulation is started at high loads to enhance heat dissipation. The dynamic strategy takes into account both cooling efficiency and environmental emission requirements. In addition, the design reduces carbon deposits, pump and valve sticking, and component wear through rapid temperature increase and hydraulic oil preheating, thereby extending the life of the engine and hydraulic system and reducing maintenance costs.

[0031] The cooling fan 52 has an intelligent multi-mode control function. When the sensor of the cooling fan 52 detects that the ambient temperature is lower than a set threshold, the cooling fan 52 rotates at zero speed to reduce the starting load of the engine 53.

[0032] See also Figure 3 The frame assembly includes a front frame 1 and a rear frame 3, and the track assembly 8 is installed on the front frame 1 and the rear frame 3, and the number of track assemblies 8 installed on the front frame 1 and the rear frame 3 is not less than one. The front frame 1 and the rear frame 3 are connected by an intermediate hinged rotation structure, and the track assemblies installed on the front frame 1 and the rear frame 3 can generate relative movement through the hinged rotation structure.

[0033] Among them, the frame assembly also includes a front counterweight 4, which is fixed to the front end of the front frame 1 to control the center of gravity of the equipment so that the track assembly 8 maintains a reasonable pressure with the ground. That is, by fixing the front counterweight to the front end of the front frame, the center of gravity position of the whole machine is scientifically adjusted to ensure that the equipment maintains a stable posture under complex working conditions such as slopes and rugged terrain. Reasonable control of the center of gravity distribution effectively reduces the risk of overturning due to center of gravity shift during operation, and is especially suitable for scenarios requiring high-precision operation or carrying heavy loads.

[0034] Among them, the articulated rotation structure includes no less than one steering push rod 2. Under the action of the steering push rod 2, the relative rotation angle of the front frame 1 and the rear frame 3 is not less than 5°, that is, through the mechanical transmission of the steering push rod 2, the hydraulic or electronic control power is efficiently converted into controllable deflection between the frames, so that fast steering with a minimum turning radius can be achieved in narrow spaces or rugged terrain, while avoiding tire slippage or ground scraping caused by the rigid connection of the traditional integral frame; the articulated structure distributes the load through a controllable rotation angle of more than 5° during steering, so that the front and rear frames form a dynamic balance support, which not only reduces the local overload of the single-side track or wheel, but also improves the anti-overturning ability through the compensation of the center of gravity offset; in addition, the modular design of the steering push rod supports multi-level thrust adjustment, which can adapt to the sensitive steering during light-load transportation and the stable fine-tuning requirements during heavy-load excavation. Combined with wear-resistant articulated bearings and sealing protection, it significantly reduces the mechanical wear and hydraulic system leakage risks caused by frequent steering, thereby extending the service life.

[0035] Among them, the power system assembly 5 is also equipped with a diesel tank, filter element, and pipeline electric heating system to improve cold start efficiency.

[0036] See also Figure 4 The track assembly 8 includes an upper support 81, a lower support 82, a supporting roller 83, a guide wheel 84, a track skin 85, and a tensioning wheel 88. The lower end of the upper support 81 is fastened to the lower support 82, and the lower end of the lower support 82 is equipped with a supporting roller 83. One end of the lower support 82 is equipped with a guide wheel 84, and the other end of the lower support 82 is provided with a tensioning wheel 88. The outside of the guide wheel 84 and the tensioning wheel 88 are restrained by the track skin 85. The driving wheel 87 is provided with a plurality of grooves on its circumference for engaging with the segments of the track so that the track assembly 8 can move together and at different speeds.

[0037] Among them, the driving wheel 87 includes a wheel body, a steel rim, and a rib plate. The meshing grooves are arranged in multiple sections. The wheel body and the steel rim are connected by radially evenly distributed reinforcing ribs. The driving wheel meshing groove is provided with a curved lead-in section. The middle of the driving wheel 87 is connected to the reducer by a connecting bolt to transmit power. In this way, the stable structure of the driving wheel 87 can be achieved to ensure stable power transmission, that is, the wheel body and the steel rim are connected by radially evenly distributed reinforcing ribs, and stress dispersion is achieved through mechanical topology optimization. The risk of wheel deformation and fatigue fracture under heavy load impact or high-frequency transmission conditions is effectively reduced, thereby extending the service life; the design of multiple meshing grooves combined with curved lead-in sections can not only accurately guide the track pin to engage smoothly to reduce friction loss, but also disperse the bite force by increasing the contact area to avoid cracking or wear of local grooves due to stress concentration; the center of the driving wheel is rigidly connected to the reducer through high-strength connecting bolts to ensure the stability of power transmission and coaxial accuracy.

[0038] Among them, the contact area of ​​track skin 85 is greater than 0.5m2, and the ground pressure ratio of track skin 85 is less than 65kPa. That is, in geological environments with weak pressure-bearing capacity such as swamps, snow or sand, it can effectively prevent the equipment from sinking or slipping, ensuring operational stability; secondly, the smaller specific pressure value can reduce structural damage to the surface of the construction site, which is especially suitable for special environments such as farmland and lawns that require surface protection; at the same time, the optimized load distribution can also reduce the energy consumption of the power system, improve transmission efficiency, and extend the service life of the track and suspension system.

[0039] Among them, the guide wheel 84, the track skin 85, the driving wheel 87 and the tensioning wheel 88 form a triangular track structure, which can achieve a maximum driving speed of 25km / h and a maximum traction force greater than 170kN17t.

[0040] Among them, there are no less than four travel motors 86, and the four travel motors 86 are respectively connected to the first travel pump 6 and the second travel pump 7 through hydraulic pipelines, that is, a dual-pump four-motor power system is realized, providing high speed and large torque to ensure driving stability and traction reliability.

[0041] Among them, the size of the driving wheel 87 is not less than 1000mm, and the speed of the travel motor 86 connected to the inner side of the driving wheel 87 is lower than 3500r / min, which effectively protects the travel motor 86, extends the service life of the crawler assembly 8, and guarantees the driving speed and maximum traction.

[0042] Among them, the system also includes an intelligent interface, and the intelligent interface can be connected to cameras, GPS satellite antenna signals, 4G network cards and external interfaces; that is, it can connect to up to 8 cameras, support image processing, 360 surround view system and visual navigation; it can connect to two GPS satellite antenna signals, support path planning and Beidou + GPS navigation; the built-in 4G network card can realize seamless data uploading to the cloud, remote downloading, monitoring, big data analysis and processing; the external interface can support TCP, RS232, CAN and other standard protocols, so as to realize seamless data uploading to the cloud, support remote downloading, monitoring and big data analysis and processing.

[0043] The implementation principle of the embodiment of this application is: First, low temperature cold start When the temperature detected by the sensor is lower than the set threshold, the cooling fan 52 is in a zero speed state to reduce the starting load of the engine 53; When the speed of the engine 53 is lower than the speed of the coupling 54, the engine 53 does not output power to the transmission box 55. At this time, the first travel pump 6 and the second travel pump 7 do not work, so as to reduce the starting load and achieve a low-temperature rapid cold start of the engine 53. In this way, the cold start efficiency can be improved to achieve no-load starting.

[0044] At the same time, if Figure 6 As shown, the internal circulating water circuit of the engine 53 can circulate by itself, or form a large circulating system with the internal circulating water circuit of the hydraulic oil tank, that is, a two-way closed-loop circulating heating structure is formed. At the same time, the large circulating system is also externally connected to the heating equipment, and the pipeline switch is controlled by the valve. In this way, the cold start efficiency of the engine 53 can be further enhanced, and the operating load problem of the engine 53 can be greatly reduced.

[0045] When the vehicle is in normal working condition, the engine 53 rotates at a speed higher than 800 r / min, the engine 53 is connected to the transfer case 55 via the clutch coupling 54, and the two outputs of the transfer case 55 are connected to the first travel pump 6 and the second travel pump 7 to transmit power, i.e. Figure 5 As shown, the first travel pump 6 and the second travel pump 7 provide input for the travel motor 86 inside the crawler assembly 8. Since the first travel pump 6 and the second travel pump 7 are designed in parallel, they can provide sufficient flow for the travel motor 86 to achieve the working conditions of high speed and high torque of the vehicle, and, Figure 5 Speed ​​sensors are provided on the outside of the four side travel motors 86. In this way, the speed sensors provide speed feedback, the controller calculates the average value, and the speed of each travel motor 86 is compared with the average value to achieve acceleration and deceleration and ensure the linearity of travel.

[0046] Anti-slip control When any track skin 85 slips, the vehicle's travel speed will be limited by controlling the pump displacement of the first travel pump 6 and the second travel pump 7, while reducing the displacement of the travel motor 86, which can significantly ensure the vehicle's ability to overcome obstacles and escape from difficulties. At the same time, since the driving wheel 87 is provided with a number of grooves on its circumference for engaging with the segments of the track, the ground contact force of the track assembly 8 can be improved, thereby achieving common ground and different speed movements.

[0047] Tension adjustment The tensioning wheel 88 inside the crawler assembly 8 will realize real-time tightening according to the change of walking pressure. At the same time, because the size of the driving wheel 87 is greater than 1000mm, the speed of the walking motor 86 can be guaranteed to be lower than 3500r / min, which effectively protects the walking motor 86 and extends the service life of the system. At the same time, the contact area of ​​the crawler skin 85 is greater than 0.5m 2 The ground pressure ratio is less than 65kPa, which allows the wheels to travel stably on soft surfaces such as swamps and snow. As a result, the two-pump four-motor system can be quickly constructed and provide high speed and high torque effects to ensure wheel driving stability and traction reliability.

[0048] The present application provides an intelligent drive system for polar high-horsepower traction equipment, which is provided with a power system assembly 5 and a crawler assembly 8, wherein, with the cooperation of the cooling fan 52 inside the power system assembly 5, the fan zero speed can be achieved when the temperature is lower than the set threshold, thereby reducing the starting load of the engine 53. At the same time, when the speed of the engine 53 is lower than the standard, the docking with the dual pumps is intelligently disconnected to achieve no-load starting, further reducing the starting difficulty, and through the combination of the first travel pump 6, the second travel pump 7 and the crawler assembly 8, a two-pump four-motor system can be formed to provide high speed and high torque to ensure driving stability and traction reliability; by providing a cooling fan 52, an engine 53, a clutch coupling 54 and a transfer case 55, wherein the cooling fan 52 is linked to the cold start system of the engine 53, when the temperature is lower than the set threshold, The cooling fan 52 runs at zero speed to reduce the starting load of the engine 53. It is also equipped with a diesel tank, filter element, and pipeline electric heating system to improve the cold start efficiency. At the same time, when the speed of the engine 53 is lower than the standard, the clutch coupling 54 automatically separates to achieve disconnection from the dual pumps, thereby achieving no-load starting and further reducing the starting difficulty; by setting a first travel pump 6, a second travel pump 7 and a track assembly 8, wherein the track assembly 8 can form a triangular track structure through the internal guide wheel 84, track skin 85, travel motor 86, drive wheel 87 and tensioning wheel 88, and when there is a problem of driving slippage, the displacement of the first travel pump 6 and the second travel pump 7 can be adjusted to limit the vehicle's driving speed. At the same time, the displacement of the travel motor 86 can be reduced to ensure the ability to overcome obstacles and get out of trouble, so that the vehicle is in a low speed and high torque state.

[0049] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An intelligent drive system for high-horsepower traction equipment in polar regions, characterized in that: The polar high-horsepower traction equipment intelligent drive system is installed on the frame assembly, including a first travel pump (6), a second travel pump (7) and a dual-pump four-motor structure, and also includes a power system assembly (5) and a crawler assembly (8). The power system assembly (5) includes an engine (53), a coupling (54) and a transmission box (55). The output end of the engine (53) is connected to the coupling (54), and the coupling (54) is connected to the transmission box (55). When the speed of the engine (53) is lower than the speed of the coupling (54), the engine (53) is connected to the transmission box (55). (53) does not output power to the transmission box (55). At this time, the first travel pump (6) and the second travel pump (7) do not work. The crawler assembly (8) includes a travel motor (86) and a drive wheel (87). The output ends of the first travel pump (6) and the second travel pump (7) are connected to the travel motor (86). The transmission box (55) is arranged between the travel motor (86) and the drive wheel (87). The output end of the travel motor (86) is connected to the input end of the reducer. The drive wheel (87) is connected to the output end of the reducer in a manner of transmitting torque.

2. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 1, characterized in that: The frame assembly comprises a front frame (1) and a rear frame (3), and a track assembly (8) is mounted on the front frame (1) and the rear frame (3), and the number of track assemblies (8) mounted on the front frame (1) and the rear frame (3) is not less than one, respectively; the front frame (1) and the rear frame (3) are connected via an intermediate hinged rotation structure, and the track assemblies mounted on the front frame (1) and the rear frame (3) can generate relative motion via the hinged rotation structure.

3. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 2, characterized in that: The frame assembly further includes a front counterweight (4), which is fixed to the front end of the front frame (1) to control the center of gravity of the equipment so that the track assembly (8) maintains a reasonable pressure with the ground.

4. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 1, characterized in that: The crawler assembly (8) further comprises an upper support (81), a lower support (82), a supporting roller (83), a guide wheel (84), a crawler skin (85) and a tensioning wheel (88). The lower end of the upper support (81) is fastened to the lower support (82), and the lower end of the lower support (82) is provided with a supporting roller (83). One end of the lower support (82) is provided with a guide wheel (84), and the other end of the lower support (82) is provided with a tensioning wheel (88). The guide wheel (84) and the tensioning wheel (88) are externally restrained against the crawler skin (85). The driving wheel (87) is provided with a plurality of grooves on its circumference for engaging with the segments of the crawler so that the crawler assembly (8) moves together at different speeds.

5. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 1, characterized in that: The internal circulating water circuit of the engine (53) can circulate by itself, or form a large circulating system with the internal circulating water circuit of the hydraulic oil tank, that is, forming a two-way closed-loop heating structure. At the same time, the large circulating system is also externally connected to a heating boiler, and the large circulation is controlled by a valve to control the pipeline switch.

6. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 2, characterized in that: The articulated rotation structure comprises at least one steering push rod (2), and under the action of the steering push rod (2), the front frame (1) and the rear frame (3) have a relative rotation angle of not less than 5°.

7. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 4, characterized in that: The driving wheel (87) comprises a wheel body, a steel ring, and a rib plate. The meshing groove is arranged in multiple sections. The wheel body and the steel ring are connected by radially evenly distributed reinforcing rib plates. The driving wheel meshing groove is provided with a curved surface introduction section. The middle of the driving wheel (87) is connected to the reducer via a connecting bolt to transmit power.

8. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 4, characterized in that: The contact area of ​​the crawler skin (85) is greater than 0.5m 2 , and the track skin (85) ground contact pressure is less than 65kPa.

9. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 1, characterized in that: The power system assembly (5) further comprises a radiator (51) and a cooling fan (52), wherein the radiator (51) and the cooling fan (52) are mounted at the front end of the engine (53), and a sensor is mounted on the outside of the power system assembly (5), and the state of the sensor can start or stop the radiator (51) and the cooling fan (52).

10. The intelligent drive system for high-horsepower traction equipment in polar regions according to claim 1, characterized in that: The system also includes an intelligent interface, which can be connected to a camera, GPS satellite antenna signal, 4G network card and external interface.

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