Amphibious wheel type chassis device and using method thereof

Abstract

The invention belongs to the technical field of vehicle engineering, and particularly relates to an amphibious wheel type chassis device and a using method thereof. An amphibious wheel type chassis device comprises a chassis, a center transmission mechanism and a water propelling mechanism are arranged on the chassis, and the center transmission mechanism is connected with a steering mechanism; according to the amphibious wheel type chassis device, efficient maneuvering on land and on water is achieved through the center transmission mechanism, the water propelling mechanism and the steering mechanism; the central transmission mechanism takes an engine, an ISG motor and a variation box as a core and is matched with a front transmission structure and a rear transmission structure, power is distributed to all axle wheels through a main transmission shaft, 8 * 8 full drive is achieved by means of two modes of fuel oil drive and pure electric drive, and trafficability and stability of complex road conditions are improved through a steering hydro-pneumatic suspension and a non-steering hydro-pneumatic suspension.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle engineering, and in particular, relates to an amphibious wheeled chassis device and a use method thereof. BACKGROUND

[0002] Amphibious vehicles, as special equipment capable of running in both land and water environments, have irreplaceable roles in the fields of military, emergency rescue, geological exploration, etc. In the field of military, it is the core equipment for the Marine Corps and border troops to perform amphibious operations, border patrols, and material transportation, etc., and is directly related to the rapid deployment capability and combat effectiveness of the troops. However, the existing equipment still has many shortcomings in performance: first, the transmission system layout is complex, the land-water power switching response is slow, and it is difficult to meet the high-speed maneuvering demand, and at the same time, the power mode is single, and the fuel consumption rate is high.

[0003] Chinese patent (publication number: 220742629U) discloses a waterway amphibious vehicle, which comprises a vehicle body, a water mechanism is arranged in the inside of the vehicle body for use of equipment in water, a land mechanism is arranged in the inside of the vehicle body for use of equipment on land, a connecting rod is rotatably connected to the inside of the left side of the vehicle body, the front end of the connecting rod penetrates and extends to the front side of the vehicle body, and a rear wheel is fixed to the front end of the connecting rod, and the water mechanism comprises a first motor fixed to the inner bottom wall of the vehicle body. However, the transmission system layout is complex, the land-water power switching response is slow, and it is difficult to meet the high-speed maneuvering demand. SUMMARY

[0004] The present application is carried out to solve the above-mentioned problems, and aims to provide an amphibious wheeled chassis device with simple transmission system layout, fast land-water power switching, and high-speed maneuvering, and a use method thereof. In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: an amphibious wheeled chassis device, comprising a chassis, a center transmission mechanism and a water propulsion mechanism are arranged on the chassis, and a steering mechanism is connected to the center transmission mechanism.

[0005] The center transmission mechanism comprises a front transmission structure, a rear transmission structure and a main transmission shaft, and the center transmission mechanism connects the front transmission structure and the rear transmission structure through the main transmission shaft.

[0006] The front transmission structure includes a bridge angle reduction box and a two-bridge main reduction box, the center transmission mechanism is connected with the two-bridge main reduction box, the two-bridge main reduction box is connected with the input end of the two-bridge T-shaped reduction box through the output end on both sides, the output end of the two-bridge T-shaped reduction box is connected with the two-bridge rotating shaft and the first transmission rod, the first transmission rod is connected with the input end of the bridge angle reduction box, the output end of the bridge angle reduction box is connected with the bridge rotating shaft, the end of the bridge rotating shaft and the two-bridge rotating shaft is connected with the wheel, the bridge rotating shaft and the two-bridge rotating shaft are provided with the steering oil-gas suspension, and the steering oil-gas suspension is connected with the vehicle body through the oil-gas spring.

[0007] The rear transmission structure includes a three-bridge main reduction box and a four-bridge angle reduction box, the input end of the three-bridge main reduction box is connected with the main transmission shaft, the output end on both sides of the three-bridge main reduction box is connected with the input end of the three-bridge T-shaped reduction box through transmission, the output end of the three-bridge T-shaped reduction box is connected with the three-bridge rotating shaft and the second transmission rod, the second transmission rod is connected with the input end of the four-bridge angle reduction box, the output end of the four-bridge angle reduction box is connected with the four-bridge rotating shaft, the three-bridge rotating shaft and the four-bridge rotating shaft are connected with the wheel, the three-bridge rotating shaft and the four-bridge rotating shaft are provided with the non-steering oil-gas suspension, and the non-steering oil-gas suspension is connected with the vehicle body through the oil-gas spring.

[0008] The center transmission mechanism includes an engine, an ISG motor and a variable reduction box, the output end of the engine is connected with the ISG motor through the first built-in clutch, the output end of the ISG motor is connected with the variable reduction box through the second built-in clutch, the output end of the variable reduction box is connected with the main transmission shaft, and the power supply end of the ISG motor is connected with the battery pack.

[0009] The water propulsion mechanism includes a first electric motor and a second electric motor, the power supply end of the ISG motor and the power supply end of the battery pack are connected with the first electric motor and the second electric motor, the output end of the first electric motor and the second electric motor is connected with the input end of the two-in-one-out planetary reducer, the output end of the two-in-one-out planetary reducer is connected with the input end of the water jet propeller, and the outside of the nozzle of the water jet propeller is provided with a rudder.

[0010] The steering mechanism includes a steering wheel, the steering wheel is connected with a first steering control rod, the first steering control rod is connected with a second steering control rod, the second steering control rod is connected with a steering gear, the steering gear is connected with a straight pull rod on both sides, and the straight pull rod is connected with a bridge steering structure and a two-bridge steering structure.

[0011] The one-axle steering structure comprises a one-axle upper swing arm, the straight pull rod is connected to the one-axle upper swing arm, the one-axle upper swing arm is connected to a one-axle main rotating shaft, the one-axle main rotating shaft is connected to a one-axle lower swing arm, the one-axle lower swing arm is connected to a horizontal pull rod, the one-axle lower swing arm is connected to a one-axle side pull rod, the one-axle side pull rod is connected to a one-axle steering knuckle arm, and the one-axle steering knuckle arm is connected to a steering knuckle on a wheel.

[0012] The two-axle steering structure comprises a longitudinal pull rod, one end of the longitudinal pull rod is connected to a one-axle upper swing arm, the other end of the longitudinal pull rod is connected to a two-axle upper swing arm, the two-axle upper swing arm is connected to a telescopic rod of a steering cylinder, the two-axle upper swing arm is connected to a two-axle main rotating shaft, the two-axle main rotating shaft is connected to a two-axle lower swing arm, the two-axle lower swing arm is connected to a two-axle steering arm knuckle, and the two-axle steering arm knuckle is connected to a steering knuckle on a wheel.

[0013] A method for using an amphibious wheeled chassis device, characterized in that:

[0014] Land driving mode:

[0015] When fuel driving is adopted, the first built-in clutch is controlled to be closed, the second built-in clutch is controlled to be closed, the engine output power is transmitted to the main transmission shaft through the ISG motor and the variable transmission box in sequence, and the main transmission shaft distributes the power to the front transmission structure and the rear transmission structure; the front transmission structure drives the one-axle wheels and the two-axle wheels; the rear transmission structure drives the three-axle wheels and the four-axle wheels, to realize 8x8 all-wheel driving.

[0016] When pure electric driving is adopted, the first built-in clutch is controlled to be disengaged, the engine is stopped, the battery pack supplies power to the ISG motor, the second built-in clutch is controlled to be closed, the ISG motor output power is transmitted to the front transmission structure and the rear transmission structure through the variable transmission box and the main transmission shaft, and the one-axle wheels and the two-axle wheels, the three-axle wheels and the four-axle wheels are driven;

[0017] Water navigation mode: the battery pack and the ISG motor supply power to the first motor and the second motor, the first motor and the second motor output power is transmitted to the water jet propeller through the two-in-one-out planetary reducer, and the water jet propeller works to generate thrust to drive the vehicle to navigate.

[0018] The technical effect of the application is that the amphibious wheeled chassis device realizes efficient mobility on land and water through the center transmission mechanism, the water propulsion mechanism and the steering mechanism. The center transmission mechanism takes the engine, the ISG motor and the variable transmission box as the core, matches the front transmission structure and the rear transmission structure, distributes power to each bridge wheel through the main transmission shaft, uses two modes of fuel drive and pure electric drive, and improves the passability and stability of complex road conditions through the steering oil suspension and the non-steering oil suspension; the water propulsion mechanism drives the water jet propeller by using double motors and a two-in-one-out planetary reducer, realizes normal cruising and high-speed sailing by combining the cooperative mode of engine-driven ISG motor power generation and battery pack power supply, and guarantees flexible water steering by the rudder; the steering mechanism realizes coordinated steering of the double front axle through the steering wheel, the first steering control rod, the second steering control rod, the steering gear and the straight pull rod, realizes coordinated steering of the double front axle under the assistance of the longitudinal pull rod and the steering oil cylinder, and ensures accurate and stable water-land steering. The amphibious wheeled chassis device controls the switching of land fuel and pure electric drive and different water speed modes through the first built-in clutch and the second built-in clutch. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present specification includes the following drawings, and the contents shown are as follows:

[0020] Fig. 1 is a whole structure diagram of an amphibious wheeled chassis device of the application;

[0021] Fig. 2 is a center transmission structure part structure diagram of an amphibious wheeled chassis device of the application;

[0022] Fig. 3 is a front transmission structure and rear transmission structure schematic diagram of an amphibious wheeled chassis device of the application;

[0023] Fig. 4 is a water propulsion mechanism schematic diagram of an amphibious wheeled chassis device of the application;

[0024] Fig. 5 is a steering mechanism schematic diagram of an amphibious wheeled chassis device of the application.

[0025] The figure is marked: 1, center transmission mechanism; 101, engine; 102, ISG motor; 103, variable transmission box; 104, first built-in clutch; 105, second built-in clutch; 11, front transmission structure; 111, one-axle angle reduction box; 112, two-axle main reduction box; 113, two-axle T-shaped reduction box; 114, two-axle rotating shaft; 115, first transmission rod; 116, one-axle rotating shaft; 12, rear transmission structure; 121, three-axle main reduction box; 122, four-axle angle reduction box; 123, three-axle T-shaped reduction box; 124, three-axle rotating shaft; 125, second transmission rod; 126, four-axle rotating shaft; 2, water propulsion mechanism; 201, first motor; 202, second motor; 203, two-in-one-out planetary reducer; 204, water jet propeller; 205, rudder; 3, steering mechanism; 301, steering wheel; 302, first steering control rod; 303, second steering control rod; 304, steering gear; 305, straight pull rod; 31, one-axle steering structure; 311, one-axle upper swing arm; 312, one-axle main rotating shaft; 313, one-axle lower swing arm; 314, cross pull rod; 315, one-axle side pull rod; 316, one-axle steering knuckle arm; 32, two-axle steering structure; 321, longitudinal pull rod; 322, two-axle upper swing arm; 323, steering oil cylinder; 324, two-axle main rotating shaft; 325, two-axle lower swing arm; 326, two-axle steering arm knuckle; 4, steering oil gas suspension; 5, non-steering oil gas suspension; 6, main transmission shaft. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, and the purpose is to help the technical personnel in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application, and to help its implementation.

[0027] As Figs. 1-5 shown, an amphibious wheeled chassis device, comprising a chassis, the chassis is provided with a center transmission mechanism 1 and a water propulsion mechanism 2, the center transmission mechanism 1 is connected with a steering mechanism 3. The chassis constitutes the overall frame of the amphibious wheeled chassis, the center transmission mechanism 1 and the water propulsion mechanism 2 are directly installed on the chassis, and the steering mechanism 3 is connected with the center transmission mechanism 1 through mechanical structure; the center transmission mechanism 1 is used for land power transmission, the water propulsion mechanism 2 realizes water power transmission, and the steering mechanism 3 controls the driving direction, which cooperates to ensure the normal operation of the vehicle in water and land environment.

[0028] The center transmission mechanism 1 comprises a front transmission structure 11, a rear transmission structure 12 and a main transmission shaft 6, and the center transmission mechanism 1 connects the front transmission structure 11 and the rear transmission structure 12 through the main transmission shaft 6. The main transmission shaft 6 is used for power transmission, and transmits the power of the center transmission mechanism 1 to the front transmission structure 11 and the rear transmission structure 12, realizes the power supply of the front transmission structure 11 and the rear transmission structure 12, and guarantees the power output of land driving. The center transmission mechanism 1 is connected with the front transmission structure 11 and the rear transmission structure 12 through the main transmission shaft 6, and forms a complete land power transmission path. After the power is output from the center transmission mechanism 1, the power is branched through the main transmission shaft 6 and transmitted to the front transmission structure 11 and the rear transmission structure 12 respectively, and drives the corresponding wheels to rotate. Through the main transmission shaft 6, the power is transmitted to the eight wheels of the four axles through the transmission structure 11 and the rear transmission structure 12, and 8x8 all-wheel drive is realized.

[0029] The front transmission structure 11 comprises a one-axle angle reduction box 111 and a two-axle main reduction box 112, the center transmission mechanism 1 is connected with the two-axle main reduction box 112, the two-axle main reduction box 112 is connected with the input end of a two-axle T-shaped reduction box 113 on both sides of the output end, the two-axle main reduction box 112 is a non-through main reducer, and both sides of the output end are connected with the two-axle T-shaped reduction box 113, so as to form one input and two outputs, the central included angle of the two outputs is 90°, the output end of the two-axle T-shaped reduction box 113 is connected with a two-axle rotating shaft 114 and a first transmission rod 115, the first transmission rod 115 is connected with the input end of the one-axle angle reduction box 111, the output end of the one-axle angle reduction box 111 is connected with a one-axle rotating shaft 116, the end of the one-axle rotating shaft 116 and the two-axle rotating shaft 114 is connected with a wheel, and the one-axle rotating shaft 116 and the two-axle rotating shaft 114 are both provided with a steering oil gas suspension 4, and the steering oil gas suspension 4 is connected with a vehicle body through an oil gas spring. The two-axle main reduction box 112 receives the power of the main transmission shaft 6 and reduces the speed and increases the torque, the two-axle T-shaped reduction box 113 realizes power distribution, the steering oil gas suspension 4 and the oil gas spring cooperate, improve the passability and driving stability of the vehicle on the complex road surface, and adapt to the steering demand. The power is transmitted to the two-axle T-shaped reduction box 113 through the two-axle main reduction box 112, a part of the power drives the two-axle wheels through the two-axle rotating shaft 114, and the other part of the power drives the one-axle wheels through the first transmission rod 115, the one-axle angle reduction box 111 and the one-axle rotating shaft 116. When steering, the steering oil gas suspension 4 adjusts the wheel posture through the expansion and contraction of the oil gas spring, and guarantees the stable steering.

[0030] The rear transmission structure 12 comprises a three-axle main reduction gearbox 121 and a four-axle corner reduction gearbox 122. The input end of the three-axle main reduction gearbox 121 is connected with the main transmission shaft 6. The output ends on both sides of the three-axle main reduction gearbox 121 are drivingly connected with the input ends of three-axle T-shaped reduction gearboxes 123. The three-axle main reduction gearbox 121 is a non-through main reducer. The three-axle main reduction gearbox 121 is connected with the three-axle T-shaped reduction gearboxes 123 on both sides, forming one input and two outputs. The central angle between the two output ends is 90°. The output ends of the three-axle T-shaped reduction gearboxes 123 are connected with three-axle rotating shafts 124 and second transmission rods 125. The second transmission rods 125 are connected with the input ends of the four-axle corner reduction gearboxes 122. The output ends of the four-axle corner reduction gearboxes 122 are connected with four-axle rotating shafts 126. The three-axle rotating shafts 124 and the four-axle rotating shafts 126 are both connected with wheels. The three-axle rotating shafts 124 and the four-axle rotating shafts 126 are provided with non-steering oil-gas suspensions 5. The non-steering oil-gas suspensions 5 are connected with the vehicle body through oil-gas springs. The three-axle main reduction gearbox 121 receives power from the main transmission shaft 6 and transmits the power to the three-axle T-shaped reduction gearboxes 123 for distribution. The non-steering oil-gas suspensions 5 and the oil-gas springs reduce the vibration during driving and improve the stability of the rear wheels during driving. The power is transmitted from the main transmission shaft 6 to the three-axle main reduction gearbox 121, and then to the three-axle T-shaped reduction gearboxes 123. Part of the power drives the three-axle wheels through the three-axle rotating shafts 124. The other part of the power is transmitted to the four-axle corner reduction gearboxes 122 through the second transmission rods 125. The power is transmitted to the four-axle rotating shafts 126 through the four-axle corner reduction gearboxes 122, and then drives the four-axle wheels through the four-axle rotating shafts 126. During driving, the non-steering oil-gas suspensions 5 buffer the road bumps through the oil-gas springs.

[0031] The eight non-steering oil-gas suspensions 5 and the eight steering oil-gas suspensions 4 are connected with the hydraulic system pipeline to form four supporting points, which can ensure the passability, high-speed maneuverability and high load capacity in complex land environments, and can realize the lifting of the wheels on water, reduce the resistance and improve the speed on water.

[0032] Overall, the front transmission structure 11 and the rear transmission structure 12 form an "H"-shaped transmission framework. The front end of the structure can reduce the installation height of the central transmission power transmission module (engine) by about 100mm to 120mm, reduce the vehicle mass center, and improve the overall water stability.

[0033] The center transmission mechanism 1 comprises an engine 101, an ISG motor 102 and a variable transmission box 103, the output end of the engine 101 is connected with the ISG motor 102 through a first built-in clutch 104, the output end of the ISG motor 102 is connected with the variable transmission box 103 through a second built-in clutch 105, the output end of the variable transmission box 103 is connected with a main transmission shaft 6, and the power supply end of the ISG motor 102 is connected with a battery pack. The center transmission mechanism 1 is arranged on the upside of the second axle of the chassis, the engine 101 and the ISG motor 102 are power sources, the engine 101 drives the ISG motor 102 to charge the battery pack, the power transmission is controlled through the first built-in clutch 104 and the second built-in clutch 105, the variable transmission box 103 is an integrated box of a transmission and a transfer, the variable transmission box 103 realizes speed changing and power distribution, the transmission and the transfer are combined into a gear box according to the power transmission route, the gear box can change speed, change torque and distribute power, the front and rear outputs of the variable transmission box 103 are connected with the main transmission shaft 6, and a land "H" shaped transmission configuration is formed; the transmission box of the variable transmission box 103 is an eight-gear automatic transmission box, which can be divided into a low-gear region and a high-gear region, the low-gear region is provided with gears 1, 2, 3 and 4, and the high-gear region is provided with gears 5, 6, 7 and 8, when driving on land, the engine 101 drives the ISG motor 102 to charge the battery pack, and meanwhile, the power of the engine 101 is transmitted to the transmission box to realize full-gear work, when the battery pack supplies power to the ISG motor 102, the ISG motor is powered, and the transmission box works in the low-gear region and the fourth gear, so that the system operation is continuous and smooth in the matching characteristics of speed and torque; the transfer is provided with a speed reduction structure and a power distribution device to transmit power to the main transmission shaft 6, and form a "H" shaped transmission. Under electric drive, the battery pack can supply power to the ISG motor 102 to jointly guarantee power output in different driving modes. Through control of the torque and speed of the engine 101 and the ISG motor 102, wire control driving is realized; the wire control chassis system reserves an interface to realize remote control of the vehicle and unmanned autonomous driving function.

[0034] The water propulsion mechanism 2 comprises a first electric motor 201 and a second electric motor 202, the ISG motor 102 power supply end and the battery pack power supply end are connected with the first electric motor 201 and the second electric motor 202, the output ends of the first electric motor 201 and the second electric motor 202 are connected with the input end of a two-in-one-out planetary reducer 203, the output end of the two-in-one-out planetary reducer 203 is connected with the input end of a water jet propeller 204, and the outside of the water jet propeller 204 is provided with a rudder 205. The first electric motor 201 and the second electric motor 202 provide water navigation power, the two-in-one-out planetary reducer 203 integrates power and reduces speed and increases torque, drives the water jet propeller 204 to generate thrust, the rudder 205 adjusts the navigation direction, and the water high-speed navigation and maneuverability are ensured. When the engine 101 drives the ISG motor 102 to generate electricity, the first electric motor 201 and the second electric motor 202 are powered to drive the water jet propeller 204, and water jet propulsion is realized; when the engine 101 generates high-power electricity, the first electric motor 201 and the second electric motor 202 are powered by the battery pack electric energy to drive the water jet propeller 204, and high-speed navigation is realized. The rudder 205 is deflected to change the direction of water flow to realize steering, the first electric motor 201 and the second electric motor 202 are input into the planetary reducer 203 and transmitted to the water jet propeller 204, forming a "2-in-1" drive configuration.

[0035] The steering mechanism 3 comprises a steering wheel 301, the steering wheel 301 is connected with a first steering control rod 302, the first steering control rod 302 is connected with a second steering control rod 303, the second steering control rod 303 is connected with a steering gear 304, the steering gear 304 is connected with straight pull rods 305 on both sides, the straight pull rods 305 are connected with a one-axle steering structure 31 and a two-axle steering structure 32. The steering wheel 301 and the first steering control rod 302 are connected through spline, which ensures that the action of the driver rotating the steering wheel 301 can be accurately transmitted to the first steering control rod 302. The driver rotates the steering wheel 301 according to the driving needs, the rotation of the steering wheel 301 directly drives the first steering control rod 302 connected therewith to rotate synchronously, the first steering control rod 302 rotates, and the movement is flexibly transmitted to the second steering control rod 303 through the universal joint, the second steering control rod 303 directly transmits the movement to the input shaft of the steering gear 304, drives the internal components of the steering gear 304 to work, the steering gear 304 can convert the rotation movement of the second steering control rod 303 into linear movement and amplify the steering force, and the output end of the steering gear 304 is hinged with the straight pull rods 305 on both sides through ball head pins. The ball head pin connection allows the straight pull rods 305 to swing within a certain range, which adapts to the angle change in the steering process. The straight pull rods 305 transmit the linear push-pull movement output by the steering gear 304 to the one-axle steering structure 31 and the two-axle steering structure 32, drive the wheels to steer, the straight pull rods 305 generate corresponding linear movement, and further drive the related components in the one-axle steering structure 31 and the two-axle steering structure 32 to act, transmit the steering force to the wheels, and realize the steering of the wheels.

[0036] The one-bridge steering structure 31 comprises a one-bridge upper swing arm 311, a straight pull rod 305 connected to the one-bridge upper swing arm 311, the one-bridge upper swing arm 311 connected to a one-bridge main rotating shaft 312, the one-bridge main rotating shaft 312 connected to a one-bridge lower swing arm 313, the one-bridge lower swing arm 313 connected to a horizontal pull rod 314, the one-bridge lower swing arm 313 connected to a one-bridge side pull rod 315, the one-bridge side pull rod 315 connected to a one-bridge steering knuckle arm 316, and the one-bridge steering knuckle arm 316 connected to a steering knuckle on a wheel. One end of the one-bridge upper swing arm 311 is hinged to the straight pull rod 305 through a ball head pin, the straight pull rod 305 pushes or pulls the one-bridge upper swing arm 311, the one-bridge upper swing arm 311 swings around the axis of the one-bridge main rotating shaft 312, the one-bridge main rotating shaft 312 is provided with a gear set, the rotation direction of the steering wheel of the one-bridge wheel is adjusted, and the steering demand of the whole vehicle is maintained. The one-bridge upper swing arm 311 further drives the one-bridge main rotating shaft 312 to rotate synchronously, converts the linear motion of the straight pull rod 315 into rotary motion, the one-bridge main rotating shaft 312 converts the swing of the one-bridge upper swing arm 311 into its own rotary motion, and transmits the rotary torque to the one-bridge lower swing arm 313, realizes the coordinated action of the upper and lower swing arms, ensures the continuous transmission of the steering force, the upper end of the one-bridge lower swing arm 313 is fixedly connected to the one-bridge main rotating shaft 312, and the lower ends of the one-bridge lower swing arms 313 on the left and right sides are connected to the horizontal pull rod 314 through ball head pins. When one side of the one-bridge lower swing arm 313 swings, the other side of the one-bridge lower swing arm 313 is driven to swing synchronously through the pushing and pulling action of the horizontal pull rod 314, so that the steering action of the left and right wheels of the one-bridge is kept synchronous, the steering angles of the wheels on the left and right sides are always matched, and the stability of the vehicle during straight driving or steering is ensured. The one-bridge lower swing arm 313 is hinged to the one-bridge side pull rod 315, the ball head connection ensures that the angle can be flexibly adjusted during swinging, and motion interference is avoided. The one-bridge side pull rod 315 is connected to the one-bridge steering knuckle arm 316 through a ball head pin, the double-ball head design ensures that the angle deviation can be flexibly compensated during steering. When the one-bridge lower swing arm 313 swings, the one-bridge side pull rod 315 transmits the pulling force or pushing force to drive the one-bridge steering knuckle arm 316 to rotate, the one-bridge steering knuckle arm 316 is connected to the steering knuckle on the wheel, the one-bridge steering knuckle arm 316 drives the wheel to deflect synchronously, the one-bridge rotating shaft 116 drives the wheel to deflect, and the steering action is realized.

[0037] The two-bridge steering structure 32 comprises a longitudinal pull rod 321, one end of which is connected with the upper swing arm 311 of the first bridge, the other end of which is connected with the upper swing arm 322 of the second bridge, the upper swing arm 322 is connected with the telescopic rod of the steering cylinder 323, the upper swing arm 322 is connected with the main rotating shaft 324 of the second bridge, the main rotating shaft 324 is connected with the lower swing arm 325 of the second bridge, the lower swing arm 325 is connected with the steering arm section 326 of the second bridge, and the steering arm section 326 is connected with the steering knuckle on the wheel. The longitudinal pull rod 321 is a synchronous transmission carrier of the steering action of the first bridge wheel and the second bridge wheel, one end of the longitudinal pull rod 321 is hinged to the upper swing arm 311 of the first bridge through a ball pin, and the other end is also connected to the upper swing arm 322 of the second bridge through a ball pin. The ball head structure can compensate for the angle deviation during the movement of the two swing arms, ensuring that the steering action can be transmitted to the second bridge wheel; when the upper swing arm 311 of the first bridge swings, the longitudinal pull rod 321 drives the upper swing arm 322 of the second bridge to swing synchronously through the pushing and pulling action, the upper swing arm 322 is fixedly connected with the main rotating shaft 324 of the second bridge, and the upper swing arm 322 is hinged to the telescopic rod of the steering cylinder 323 through a pin shaft; the upper swing arm 322 transmits the force to the main rotating shaft 324 of the second bridge, and the upper swing arm 322 obtains steering assistance by means of the extension and retraction of the telescopic rod of the steering cylinder 323, thereby reducing the steering operation force. The steering cylinder 323 is a steering assistance device, the cylinder body is fixed to the vehicle frame, and the telescopic rod is connected to the upper swing arm 322 of the second bridge through a pin shaft; when the vehicle turns, the hydraulic system drives the telescopic rod of the steering cylinder 323 to extend or retract, the steering cylinder 323 provides additional pushing force or pulling force for the upper swing arm 322 of the second bridge, assists the longitudinal pull rod 321 to drive the upper swing arm 322 of the second bridge to swing, the main rotating shaft 324 of the second bridge is connected with the upper swing arm 322 and the lower swing arm 325 of the second bridge, and the main rotating shaft 324 of the second bridge is installed on the vehicle frame through a bearing; under the driving of the upper swing arm 322, the main rotating shaft 324 of the second bridge rotates around its own axis, converts the swing of the upper swing arm 322 into synchronous movement of the lower swing arm 325, and the lower end of the lower swing arm 325 is hinged to the steering arm section 326 of the second bridge through a ball pin; after receiving the rotating torque transmitted by the main rotating shaft 324 of the second bridge, the lower swing arm 325 drives the steering arm section 326 to move by swinging, and the steering arm section 326 is connected with the steering knuckle on the wheel; the swing of the steering arm section 326 drives the wheel to deflect, ensuring that the steering angle of the second bridge wheel matches the first bridge wheel.

[0038] The steering mechanism 3 is connected with an electric control steering control system, and controls the braking of each wheel to prevent the wheel from being locked and the braking from being deviated.

[0039] The use method of the amphibious wheeled chassis device is as follows:

[0040] Land travel mode: when fuel driving is adopted, the first built-in clutch 104 is controlled to be closed, the second built-in clutch 105 is controlled to be closed, the engine 101 outputs power to the main transmission shaft 6 through the ISG motor 102 and the variable transmission box 103 in sequence, and the main transmission shaft 6 distributes the power to the front transmission structure 11 and the rear transmission structure 12; in the front transmission structure 11, the power is transmitted to the two-axle T-shaped reduction box 113 through the two-axle main reduction box 112, the two-axle T-shaped reduction box 113 drives the two-axle wheels through the two-axle rotating shaft 114, and at the same time, the power is transmitted to the one-axle angle reduction box 111 through the first transmission rod 115, the one-axle angle reduction box 111 drives the one-axle wheels through the one-axle rotating shaft 116; in the rear transmission structure 12, the power is transmitted to the three-axle T-shaped reduction box 123 through the three-axle main reduction box 121, the three-axle T-shaped reduction box 123 drives the three-axle wheels through the three-axle rotating shaft 124, and at the same time, the power is transmitted to the four-axle angle reduction box 122 through the second transmission rod 125, the four-axle angle reduction box 122 drives the four-axle wheels through the four-axle rotating shaft 126, 8x8 full drive travel is realized, and at the same time, the ISG motor 102 charges the battery pack;

[0041] When pure electric driving is adopted, the first built-in clutch 104 is controlled to be disengaged, the engine 101 stops working, the battery pack supplies power to the ISG motor 102, the second built-in clutch 105 is controlled to be closed, the ISG motor 102 outputs power to the front transmission structure 11 and the rear transmission structure 12 through the variable transmission box 103 and the main transmission shaft 6, in the front transmission structure 11, the power is transmitted to the two-axle T-shaped reduction box 113 through the two-axle main reduction box 112, the two-axle T-shaped reduction box 113 drives the two-axle wheels through the two-axle rotating shaft 114, and at the same time, the power is transmitted to the one-axle angle reduction box 111 through the first transmission rod 115, the one-axle angle reduction box 111 drives the one-axle wheels through the one-axle rotating shaft 116; in the rear transmission structure 12, the power is transmitted to the three-axle T-shaped reduction box 123 through the three-axle main reduction box 121, the three-axle T-shaped reduction box 123 drives the three-axle wheels through the three-axle rotating shaft 124, and at the same time, the power is transmitted to the four-axle angle reduction box 122 through the second transmission rod 125, the four-axle angle reduction box 122 drives the four-axle wheels through the four-axle rotating shaft 126;

[0042] Water travel mode: when water normal cruising is adopted, the engine 101 drives the ISG motor 102 to generate electricity, supplies power to the first motor 201 and the second motor 202, the first motor 201 and the second motor 202 output power to the water jet propeller 204 through the two-in-one-out planetary reducer 203, the water jet propeller 204 works to generate thrust to drive the vehicle to travel, and the rudder 205 is deflected to change the direction of water flow to realize steering;

[0043] When the amphibious wheeled chassis device is sailing at the highest speed on water, the engine 101 generates high power to generate electricity, and the battery pack supplies power to the first motor 201 and the second motor 202, and the first motor 201 and the second motor 202 output power to the water jet propeller 204 through the two-in-one planetary reducer 203, so as to realize high-speed sailing; the water flow direction is changed by deflecting the rudder 205 to realize steering.

[0044] Effects of the embodiment

[0045] The amphibious wheeled chassis device realizes efficient mobility on land and water through the center transmission mechanism 1, the water propulsion mechanism 2 and the steering mechanism 3. The center transmission mechanism 1 takes the engine 101, the ISG motor 102 and the variable transmission box 103 as the core, is matched with the front transmission structure 11 and the rear transmission structure 12, distributes power to each bridge wheel through the main transmission shaft 6, realizes two modes of fuel drive and pure electric drive, and improves the passability and stability of complex road conditions through the steering oil gas suspension 4 and the non-steering oil gas suspension 5; the water propulsion mechanism 2 drives the water jet propeller 204 by using double motors and two-in-one planetary reducers 203, realizes normal cruising and high-speed sailing in combination with the cooperative mode of the engine 101 driving the ISG motor 102 to generate electricity and the battery pack supplying power, and guarantees flexible steering on water through the rudder 205; the steering mechanism 3 realizes cooperative steering of the double front axle through the steering wheel 301, the first steering control rod 302, the second steering control rod 303, the steering gear 304 and the straight pull rod 305, and realizes cooperative steering of the double front axle under the assistance of the longitudinal pull rod 321 and the steering oil cylinder 323, and ensures accurate and stable steering on land and water. The amphibious wheeled chassis device controls and switches land fuel drive and pure electric drive and different water sailing speed modes through the first built-in clutch 104 and the second built-in clutch 105.

[0046] The above describes the present application in conjunction with the drawings. Obviously, the specific implementation of the present application is not limited by the above method. As long as various non-essential improvements are made by using the method concept and technical solution of the present application; or the above concept and technical solution of the present application is directly applied to other occasions without improvement, all of them are within the protection scope of the present application.

Claims

1. An amphibious wheeled chassis arrangement comprising a chassis, characterised in that: The bottom plate is provided with a center transmission mechanism (1) and a water propulsion mechanism (2), and the center transmission mechanism (1) is connected with a steering mechanism (3).

2. An amphibious wheeled chassis arrangement according to claim 1, characterised in that: The center transmission mechanism (1) comprises a front transmission structure (11), a rear transmission structure (12) and a main transmission shaft (6), and the center transmission mechanism (1) connects the front transmission structure (11) and the rear transmission structure (12) through the main transmission shaft (6).

3. An amphibious wheeled chassis arrangement according to claim 2, characterised in that: The front transmission structure (11) comprises a one-bridge angle reduction box (111) and a two-bridge main reduction box (112), the center transmission mechanism (1) is connected with the two-bridge main reduction box (112), the two-bridge main reduction box (112) is drivingly connected with the input end of a two-bridge T-shaped reduction box (113) at both sides, the output end of the two-bridge T-shaped reduction box (113) is connected with a two-bridge rotating shaft (114) and a first transmission rod (115), the first transmission rod (115) is connected with the input end of the one-bridge angle reduction box (111), the output end of the one-bridge angle reduction box (111) is connected with a one-bridge rotating shaft (116), the end of the one-bridge rotating shaft (116) and the two-bridge rotating shaft (114) is connected with a wheel, the one-bridge rotating shaft (116) and the two-bridge rotating shaft (114) are provided with a steering oil-gas suspension (4), and the steering oil-gas suspension (4) is connected with the vehicle body through an oil-gas spring.

4. An amphibious wheeled chassis arrangement according to claim 2, characterised in that: The rear transmission structure (12) comprises a three-bridge main reduction box (121) and a four-bridge angle reduction box (122), the input end of the three-bridge main reduction box (121) is connected with the main transmission shaft (6), the output ends of the three-bridge main reduction box (121) at both sides are drivingly connected with the input ends of three-bridge T-shaped reduction boxes (123), the output ends of the three-bridge T-shaped reduction boxes (123) are connected with three-bridge rotating shafts (124) and second transmission rods (125), the second transmission rods (125) are connected with the input ends of the four-bridge angle reduction boxes (122), the output ends of the four-bridge angle reduction boxes (122) are connected with four-bridge rotating shafts (126), the three-bridge rotating shafts (124) and the four-bridge rotating shafts (126) are connected with wheels, the three-bridge rotating shafts (124) and the four-bridge rotating shafts (126) are provided with non-steering oil-gas suspensions (5), and the non-steering oil-gas suspensions (5) are connected with the vehicle body through oil-gas springs.

5. An amphibious wheeled chassis arrangement according to claim 2, characterised in that: The center transmission mechanism (1) comprises an engine (101), an ISG motor (102) and a variable reduction box (103), the output end of the engine (101) is connected with the ISG motor (102) through a first built-in clutch (104), the output end of the ISG motor (102) is connected with the variable reduction box (103) through a second built-in clutch (105), the output end of the variable reduction box (103) is connected with the main transmission shaft (6), and the power supply end of the ISG motor (102) is connected with a battery pack.

6. An amphibious wheeled chassis arrangement according to claim 5, characterised in that: The water propulsion mechanism (2) includes a first motor (201) and a second motor (202), and the ISG motor (102) power supply end and the battery pack power supply end are connected with the first motor (201) and the second motor (202), the output end of the first motor (201) and the second motor (202) is connected with the input end of the two-in-one-out planetary reducer (203), the output end of the two-in-one-out planetary reducer (203) is connected with the input end of the water jet propeller (204), and the rudder (205) is arranged outside the nozzle of the water jet propeller (204).

7. An amphibious wheeled chassis apparatus as claimed in claim 1, wherein: The steering mechanism (3) includes a steering wheel (301), the steering wheel (301) is connected with a first steering control rod (302), the first steering control rod (302) is connected with a second steering control rod (303), the second steering control rod (303) is connected with a steering gear (304), the steering gear (304) is connected with a straight pull rod (305) on both sides, and the straight pull rod (305) is connected with a one-axle steering structure (31) and a two-axle steering structure (32).

8. An amphibious wheeled chassis arrangement according to claim 7, characterised in that: The one-axle steering structure (31) includes a one-axle upper swing arm (311), the straight pull rod (305) is connected with the one-axle upper swing arm (311), the one-axle upper swing arm (311) is connected with a one-axle main rotating shaft (312), the one-axle main rotating shaft (312) is connected with a one-axle lower swing arm (313), the one-axle lower swing arm (313) is connected with a horizontal pull rod (314), the one-axle lower swing arm (313) is connected with a one-axle side pull rod (315), the one-axle side pull rod (315) is connected with a one-axle steering knuckle arm (316), and the one-axle steering knuckle arm (316) is connected with a steering knuckle on a wheel.

9. An amphibious wheeled chassis arrangement according to claim 8, characterised in that: The two-axle steering structure (32) includes a vertical pull rod (321), one end of the vertical pull rod (321) is connected with the one-axle upper swing arm (311), the other end of the vertical pull rod (321) is connected with a two-axle upper swing arm (322), the two-axle upper swing arm (322) is connected with a telescopic rod of a steering oil cylinder (323), the two-axle upper swing arm (322) is connected with a two-axle main rotating shaft (324), the two-axle main rotating shaft (324) is connected with a two-axle lower swing arm (325), the two-axle lower swing arm (325) is connected with a two-axle steering arm knuckle (326), and the two-axle steering arm knuckle (326) is connected with a steering knuckle on a wheel.

10. A method of using an amphibious wheeled chassis arrangement according to any one of claims 1 to 9, characterized in that: Specifically, Land travel mode: When fuel driving is adopted, the first built-in clutch (104) is controlled to be closed, the second built-in clutch (105) is controlled to be closed, the output power of the engine (101) is transmitted to the main transmission shaft (6) through the ISG motor (102) and the gear box (103) in sequence, and the main transmission shaft (6) distributes the power to the front transmission structure (11) and the rear transmission structure (12); the front transmission structure (11) drives the one-axle wheel and the two-axle wheel; the rear transmission structure (12) drives the three-axle wheel and the four-axle wheel, and 8x8 full drive travel is realized. When pure electric driving is adopted, the first built-in clutch (104) is controlled to be disengaged, the engine (101) is stopped, the battery pack supplies power to the ISG motor (102), the second built-in clutch (105) is controlled to be engaged, the ISG motor (102) outputs power through the transmission box (103) and the main drive shaft (6) to the front transmission structure (11) and the rear transmission structure (12), and drives the front axle wheels and the rear axle wheels, the third axle wheels and the fourth axle wheels; Water navigation mode: the battery pack and the ISG motor (102) supply power to the first electric motor (201) and the second electric motor (202), the first electric motor (201) and the second electric motor (202) output power through the two-in-one-out planetary reducer (203) to the water jet propeller (204), and the water jet propeller (204) works to generate thrust to drive the vehicle to navigate.

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