Hydraulic control system for water propulsion device of amphibious all-terrain vehicle

Abstract

The invention discloses a hydraulic control system for a water propulsion device of an amphibious all-terrain vehicle, including a front vehicle and a rear vehicle, wherein a front vehicle propeller is respectively installed on both sides of the front vehicle, and a rear vehicle propeller is installed at the rear of the rear vehicle, and the oil circuit of the hydraulic control system is divided into an expansion oil circuit and a drive oil circuit, wherein the expansion oil circuit includes a parallel expansion oil circuit of the front vehicle and an expansion oil circuit of the rear vehicle, and the drive oil circuit includes a parallel drive oil circuit of the front vehicle and a drive oil circuit of the rear vehicle, wherein the expansion oil circuit of the front vehicle controls the expansion or folding of the front vehicle propeller, and the expansion oil circuit of the rear vehicle controls the expansion or folding of the rear vehicle propeller, and the front vehicle drive oil circuit and the rear vehicle drive oil circuit control the output power of each propeller. The propeller of the invention can adjust its posture in water and on land, thereby ensuring the vehicle body dimension limit when the vehicle is traveling on land; when it is expanded and pushed in water, the thrust on both sides of the vehicle body is different by controlling the speed difference of the propulsion devices on the left and right sides of the front vehicle, thus realizing the vehicle's underwater steering.

Description

Technical Field

[0001] The invention relates to an all-terrain vehicle for walking in water, in particular to a water propulsion device installed on a front vehicle and a rear vehicle. Background Art

[0002] A two-body all-terrain vehicle is a type of transportation equipment specially developed for complex and changeable roads. With the upgrading of demand and the need to cope with more terrain conditions, vehicles are required to have amphibious driving capabilities. Currently, the vehicle's water drive is mainly powered by the tracks of the chassis, and its water driving ability is very inefficient. By matching the shape and upgrading the tracks, the current fastest water driving speed is only close to 5km / h. In addition, some manufacturers have installed fixed water propellers at the rear of the vehicle. Through analysis, due to the vortex at the rear of the vehicle due to the shape of the body, the propulsion efficiency of the propeller is greatly reduced, so it is not a good solution.

[0003] At present, there are two main driving methods for all-terrain vehicles with amphibious driving capabilities to drive the vehicle in water: one is to rely on the bumps on the tracks or tires to drive the vehicle in water; the other is to rely on the installation of fixed blades (or built-in water jet propulsion) to drive the vehicle in water. The above two methods, the first one has a very slow speed on water and can only barely adapt to still water areas with negligible water flow speed, and the efficiency is very low. The second solution can achieve a higher maneuvering speed in water, but the fixed-installed propeller needs to take into account the body design of the vehicle, and cannot obtain good water-thrusting power. In addition, the fixed layout makes the body design difficult and the space is compressed to a large extent, which is not conducive to the modular design of the vehicle, greatly reducing the versatility and practicality of the vehicle.

[0004] In addition, the double-body all-terrain vehicle uses an articulated mid-position steering device, which can fully improve the vehicle's steering ability when driving on land, making the vehicle maneuverable and flexible, and fully activating the all-terrain driving ability. When driving in water, it can only rely on this steering method to adjust the direction of travel in the water. This snaking method in the water causes the vehicle's posture to change back and forth, and it is impossible to keep the forward lock, which greatly increases the difficulty of operation and pointing accuracy when reaching the other side. Therefore, driving in water has become the focus of drivers' complaints and seriously distracts drivers from observing the situation in the water. In the actual driving process in water, it often happens that the vehicle deviates from the green zone (designated landing point) when landing, and touches obstacles marked in the water due to steering difficulties in the water, which greatly reduces the vehicle's wading ability. Summary of the invention

[0005] The technical problem to be solved by the present invention is as follows: In view of the problems of slow speed and poor steering of amphibious all-terrain vehicles on water, a hydraulic control system for an all-terrain vehicle that can adjust its posture in water and on land is provided. On the one hand, the vehicle's body dimension limit when driving on land is ensured, and on the other hand, the vehicle can obtain efficient propulsion power when driving in water, so that the vehicle's amphibious capabilities can be fully utilized.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A hydraulic control system for an amphibious all-terrain vehicle water propulsion device includes a front vehicle and a rear vehicle, wherein a front vehicle propeller is respectively installed on both sides of the front vehicle, and a rear vehicle propeller is installed at the rear of the rear vehicle. The oil circuit of the hydraulic control system is divided into a deployment oil circuit and a drive oil circuit. The deployment oil circuit includes a parallel front vehicle deployment oil circuit and a rear vehicle deployment oil circuit, and the drive oil circuit includes a parallel front vehicle drive oil circuit and a rear vehicle drive oil circuit. The front vehicle deployment oil circuit controls the deployment or retraction of the front vehicle propeller, and the rear vehicle deployment oil circuit controls the deployment or retraction of the rear vehicle propeller. The front vehicle drive oil circuit and the rear vehicle drive oil circuit control the output power of each propeller.

[0008] The oil circuit of the hydraulic control system is divided into an expansion oil circuit and a drive oil circuit. The oil inlet end of the expansion oil circuit is installed with a solenoid valve 1 as a main switch. The expansion oil circuit includes a front vehicle expansion oil circuit and a rear vehicle expansion oil circuit connected in parallel. Solenoid reversing valves are respectively installed on the front vehicle expansion oil circuit and the rear vehicle expansion oil circuit.

[0009] The front vehicle thruster is controlled to be unfolded or retracted by the linear adjustment cylinder, swing arm cylinder and rod, and the rear vehicle thruster is controlled to be unfolded and retracted by the double-acting cylinder. The movement directions of the linear adjustment cylinder, swing arm cylinder and double-acting cylinder are controlled by the electromagnetic reversing valve. A sequence valve is installed on the front vehicle unfolding oil circuit to control the working sequence of the linear adjustment cylinder and swing arm cylinder.

[0010] An electromagnetic reversing valve is used as the overall control switch in the driving oil circuit, and a plurality of shunt group valves are installed in the driving oil circuit, and the power of the turbine driven by the four variable motors is adjusted by the shunt group valves.

[0011] The driving oil circuit includes a front vehicle driving oil circuit and a rear vehicle driving oil circuit connected in parallel, and the oil supply ratio of the front vehicle driving oil circuit and the rear vehicle driving oil circuit is adjusted by two shunt group valves. In the front vehicle driving oil circuit, the oil supply ratio of the left and right front vehicle variable motor driven turbines is adjusted by two shunt group valves, and in the rear vehicle driving oil circuit, the oil supply ratio of the left and right rear vehicle variable motor driven turbines is adjusted by two shunt group valves.

[0012] When entering the underwater mode, the execution steps of the hydraulic system are as follows: solenoid valve 1 is energized and turned on, and the high-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the solenoid reversing valve. Under the action of oil pressure and sequence valve, the swing arm cylinder and the linear adjustment cylinder successively contract and deploy the front vehicle thruster, and under the action of oil pressure, the double-acting cylinder extends to drive the rear vehicle thruster to deploy.

[0013] When traveling in water, the hinged device between the front vehicle and the rear vehicle is locked, and the displacement of different variable motors is dynamically adjusted in real time through the speed sensor and the diversion valve group to change the thrust of the propulsion device in different positions to achieve vehicle steering in the water.

[0014] When entering the land mode from water, the electromagnetic reversing valve of the main switch in the driving oil circuit is first powered off, and then the solenoid valve 1 is powered on and turned on. The high-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the electromagnetic reversing valve, controlling the extension of the swing arm cylinder and the linear adjustment cylinder to retract the front vehicle thruster, and the double-acting cylinder contracts to drive the rear vehicle thruster to retract.

[0015] Beneficial effects of the present invention:

[0016] The present invention makes the fixed thruster "alive" and can adjust its posture in water and on land. On the one hand, it ensures the size limit of the vehicle body when traveling on land, and on the other hand, it enables the vehicle to obtain efficient propulsion power when traveling in water, so that the vehicle's amphibious capabilities can be fully utilized. The thruster of the present invention adopts hydraulic power and hydraulic control, as well as a hydraulic cylinder for controlling the thruster posture, etc., which provides a more effective solution for the design of amphibious vehicles.

[0017] The propeller can exert its efficient propulsion ability when driving in water, effectively avoid the eddy current interference caused by the vehicle's own shape, and fully improve the maneuvering speed in water; when driving on land, the propeller can be folded and stored inside the vehicle body, organically integrated, fully improving the vehicle's driving ability and meeting the vehicle's road driving and transportation standards, similar to the landing gear of an airplane.

[0018] The thruster of the present invention adopts hydraulic power and hydraulic control, as well as a hydraulic cylinder for controlling the thruster posture, etc., which provides a more effective solution for the design of amphibious vehicles.

[0019] When turning in water, lock the neutral steering device and control the speed difference of the propulsion devices on the left and right sides of the front vehicle to make the thrust on both sides of the vehicle body different, thus realizing the vehicle's underwater turning with clear direction, accurate underwater driving route and landing point. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a display of propeller arrangement and amphibious posture.

[0021] Figure 2 It is the mechanism principle of the front vehicle propulsion device assembly.

[0022] Figure 3 It is the mechanism principle of the rear vehicle propulsion device assembly.

[0023] Figure 4 It is a diagram of the hydraulic control system composition. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] Embodiment 1:

[0026] A hydraulic control system for an amphibious all-terrain vehicle's water propulsion device includes a front vehicle and a rear vehicle, wherein a front vehicle propeller is respectively installed on both sides of the front vehicle, and a rear vehicle propeller is installed at the rear of the rear vehicle. The front vehicle propeller and the rear vehicle propeller are controlled by a hydraulic control system to be deployed. In the land mode, the front vehicle propeller and the rear vehicle propeller are retracted to be close to the vehicle body, and in the water mode, the front vehicle propeller and the rear vehicle propeller are deployed. The hydraulic control system controls the variable motors of each propeller to drive the turbine to rotate in the water to provide power.

[0027] The oil circuit of the hydraulic control system is divided into a deployment oil circuit and a drive oil circuit. A solenoid valve 1 is installed at the oil inlet end of the deployment oil circuit as a main switch. The deployment oil circuit includes a front vehicle deployment oil circuit and a rear vehicle deployment oil circuit connected in parallel. An electromagnetic reversing valve 2 is installed at the front end of the front vehicle deployment oil circuit, and electromagnetic reversing valves 9 are respectively installed on the rear vehicle deployment oil circuits.

[0028] The front vehicle thruster is unfolded or folded by a linear adjustment cylinder, a swing arm cylinder and a rod, and the rear vehicle thruster is unfolded and folded by a double-acting cylinder. The movement directions of the linear adjustment cylinder and the swing arm cylinder are controlled by the electromagnetic reversing valve 2, and the movement direction of the double-acting cylinder is controlled by the electromagnetic reversing valve 9. In the front vehicle unfolding oil circuit, the oil circuit is divided into a swing arm cylinder oil circuit and a linear cylinder oil circuit. The left and right swing arm cylinders are supplied with oil synchronously, and the left and right linear adjustment cylinders are supplied with oil synchronously. Sequence valves are installed on the oil inlet line and the oil outlet line between the swing arm cylinder oil circuit and the linear cylinder oil circuit respectively, and the movements of the swing arm cylinder and the linear adjustment cylinder have a sequence.

[0029] The driving oil circuit uses an electromagnetic reversing valve 11 as the overall control switch, and a plurality of diverter valves are installed in the driving oil circuit, and the power of the turbine driven by the four variable motors is adjusted by the diverter valves.

[0030] The driving oil circuit includes a front vehicle driving oil circuit and a rear vehicle driving oil circuit connected in parallel. The oil supply ratio of the front vehicle driving oil circuit and the rear vehicle driving oil circuit is adjusted by means of diverter group valves 12 and 13. In the front vehicle driving oil circuit, the oil supply ratio of the left and right front vehicle variable motor driven turbines is adjusted by means of two diverter group valves (15 and 14). In the rear vehicle driving oil circuit, the oil supply ratio of the left and right rear vehicle variable motor driven turbines is adjusted by means of two diverter group valves (21 and 20).

[0031] When entering the underwater mode, the execution steps of the hydraulic system are as follows: the solenoid valve 1 is energized and turned on, and the high-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the solenoid reversing valve 2. Under the action of the oil pressure and the sequence valve, the swing arm cylinder and the linear adjustment cylinder successively contract and deploy the front vehicle thruster, and under the action of the oil pressure, the double-acting cylinder extends to drive the rear vehicle thruster to deploy.

[0032] When traveling in water, the displacement of different variable motors is adjusted dynamically in real time through speed sensors and diversion valves to change the thrust of propulsion devices in different positions to achieve vehicle steering in the water.

[0033] When entering the land mode from water, the electromagnetic reversing valve of the main switch in the driving oil circuit is first powered off, and then the solenoid valve 1 is powered on and turned on. The high-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the electromagnetic reversing valve, controlling the extension of the swing arm cylinder and the linear adjustment cylinder to retract the front vehicle thruster, and the double-acting cylinder contracts to drive the rear vehicle thruster to retract.

[0034] Embodiment 2:

[0035] The present invention is a hydraulic control system for a water propulsion device of an amphibious all-terrain vehicle, the system comprising a solenoid valve 1, a solenoid reversing valve 2, a linear adjustment cylinder 3 of a front vehicle left propulsion device assembly, a linear adjustment cylinder 4 of a front vehicle right propulsion device assembly, a swing arm cylinder 5 of a front vehicle left propulsion device assembly, a swing arm cylinder 6 of a front vehicle right propulsion device assembly, a sequential valve group 7, a sequential valve group 8, a solenoid reversing valve 9, a double-acting cylinder 10 of a rear vehicle propulsion device assembly, a solenoid reversing valve 11, a diverter valve group 12, a diverter valve group 13, a diverter valve group 14, a diverter valve group 15, a variable motor 16 of a front vehicle left propulsion device assembly, a variable motor 17 of a front vehicle right propulsion device assembly, a variable motor 18 of a rear vehicle left propulsion device assembly, a variable motor 19 of a rear vehicle right propulsion device assembly, a diverter valve group 20, and a diverter valve group 21, wherein the variable motors 16, 17, 18, and 19# are integrated with speed sensors and electromagnetic variable adjustment rods, such as Figure 1 , Figure 2 shown.

[0036] Principle and action relationship description

[0037] When the vehicle needs to start the water propulsion device (the default is land mode, and the front and rear vehicle propulsion devices are in folded state), it enters the water mode. At this time, the execution steps of the hydraulic system are as follows:

[0038] In the water mode, the solenoid valve 1 is powered on, the solenoid reversing valve 2 is turned on in the right position, and the solenoid reversing valve 9 is turned on in the right position. The high-pressure oil first enters the small chamber of the swing arm cylinder 5 of the left propulsion device assembly of the front vehicle, the small chamber of the swing arm cylinder 6 of the right propulsion device assembly of the front vehicle, and the large chamber of the double-acting cylinder 10 of the propulsion device assembly of the rear vehicle through the system P port. When the system oil pressure increases, the sequence valve 8 is opened again, and the high-pressure oil of the P port enters the small chamber of the linear adjustment cylinder 3 of the left propulsion device assembly of the front vehicle, and the small chamber of the linear adjustment cylinder 4 of the right propulsion device assembly of the front vehicle. The above steps make the propulsion devices of the front and rear vehicles fully deployed and in the position state before the propeller is started. At this time, Set the driving direction in water (forward or backward), take forward as an example (the backward action is opposite), the electromagnetic reversing valve 11 is switched to the left position, the high-pressure oil at the P port enters the diverter valve group 12 through the electromagnetic reversing valve 11, and then enters the diverter valve group 15 and the diverter valve group 21 respectively, and finally reaches the variable motor 16 of the left propulsion device assembly of the front vehicle, the variable motor 17 of the right propulsion device assembly of the front vehicle, the variable motor 18 of the left propulsion device assembly of the rear vehicle, and the variable motor 19 of the right propulsion device assembly of the rear vehicle, driving the variable motor to run at high speed, driving the propulsion device to generate underwater thrust to drive the vehicle to travel in the water. The displacement of different motors can be adjusted dynamically in real time through the speed sensor of the variable motor and the electromagnetic variable adjustment lever, thereby changing the thrust of the propulsion device at different positions, and achieving rapid steering of the vehicle in the water.

[0039] When the vehicle needs to shut down the water propulsion device, it enters the land mode. At this time, the hydraulic system performs the following steps:

[0040] First, the electromagnetic reversing valve 11 is powered off and placed in the middle position. At this time, the hydraulic system no longer supplies oil to the variable motor in the propulsion device, and the variable motor also quickly unloads through the middle position function of the electromagnetic reversing valve 11.

[0041] Solenoid valve 1 is energized and turned on, solenoid reversing valve 2 is turned on in the left position, solenoid reversing valve 9 is turned on in the left position, and high-pressure oil first enters the large chamber 3 of the linear adjustment cylinder of the left propulsion device assembly of the front vehicle, the large chamber 4 of the linear adjustment cylinder of the right propulsion device assembly of the front vehicle, and the small chamber 10 of the double-acting cylinder of the propulsion device assembly of the rear vehicle through the system P port. When the system oil pressure rises, the sequence valve 7 is opened again, and the high-pressure oil at the P port enters the large chamber 5 of the swing arm cylinder of the left propulsion device assembly of the front vehicle, and the large chamber 6 of the swing arm cylinder of the right propulsion device assembly of the front vehicle. The above steps make the front and rear vehicle propulsion devices completely folded, and the vehicle is in land mode.

Claims

1. A hydraulic control system for a water propulsion device of an amphibious all-terrain vehicle, comprising a front vehicle and a rear vehicle, characterized in that: A front vehicle thruster is installed on both sides of the front vehicle, and a rear vehicle thruster is installed at the rear of the rear vehicle. The oil circuit of the hydraulic control system is divided into an expansion oil circuit and a drive oil circuit. The expansion oil circuit includes a front vehicle expansion oil circuit and a rear vehicle expansion oil circuit connected in parallel. The drive oil circuit includes a front vehicle drive oil circuit and a rear vehicle drive oil circuit connected in parallel. The front vehicle expansion oil circuit controls the expansion or retraction of the front vehicle thruster, and the rear vehicle expansion oil circuit controls the expansion or retraction of the rear vehicle thruster. The front vehicle drive oil circuit and the rear vehicle drive oil circuit control the output power of each thruster. A solenoid valve (1) is installed at the oil inlet end of the expansion oil circuit as a main switch, and solenoid reversing valves are installed on the front vehicle expansion oil circuit and the rear vehicle expansion oil circuit respectively.

2. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 1 is characterized by: The front vehicle thruster is controlled to be unfolded or retracted by the linear adjustment cylinder, swing arm cylinder and rod, and the rear vehicle thruster is controlled to be unfolded and retracted by the double-acting cylinder. The movement directions of the linear adjustment cylinder, swing arm cylinder and double-acting cylinder are controlled by the electromagnetic reversing valve. A sequence valve is installed on the front vehicle unfolding oil circuit to control the working sequence of the linear adjustment cylinder and swing arm cylinder.

3. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 2 is characterized by: An electromagnetic reversing valve is used as the overall control switch in the driving oil circuit. A plurality of shunt group valves are installed in the driving oil circuit. The power of the turbine driven by the four variable motors is adjusted by the shunt group valves.

4. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 3 is characterized by: The oil supply ratio of the front vehicle driving oil circuit and the rear vehicle driving oil circuit is adjusted by two shunt group valves, the oil supply ratio of the left and right front vehicle variable motor driven turbines is adjusted by another two shunt group valves in the front vehicle driving oil circuit, and the oil supply ratio of the left and right rear vehicle variable motor driven turbines is adjusted by another two shunt group valves in the rear vehicle driving oil circuit.

5. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 4 is characterized in that When entering the underwater mode, the execution steps of the hydraulic system are as follows: the solenoid valve (1) is energized and turned on, and the high-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the solenoid reversing valve. Under the action of the oil pressure and the sequence valve, the swing arm cylinder and the linear adjustment cylinder successively retract and deploy the front vehicle thruster, and under the action of the oil pressure, the double-acting cylinder extends to drive the rear vehicle thruster to deploy.

6. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 5, characterized in that: When traveling in water, the hinged device between the front vehicle and the rear vehicle is locked, and the displacement of different variable motors is dynamically adjusted in real time through the speed sensor and the diversion valve group to change the thrust of the propulsion device in different positions to achieve vehicle steering in the water.

7. The hydraulic control system of the water propulsion device of the amphibious all-terrain vehicle according to claim 6, characterized in that: When entering the land mode from water, the electromagnetic reversing valve acting as the main switch in the driving oil circuit is first de-energized, and then the electromagnetic valve (1) is energized and turned on. High-pressure oil enters the front vehicle deployment oil circuit and the rear vehicle deployment oil circuit through the electromagnetic reversing valve, controlling the extension of the swing arm cylinder and the linear adjustment cylinder to retract the front vehicle propeller, and the contraction of the double-acting cylinder drives the rear vehicle propeller to retract.

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