Wheel-track conversion type vehicle driving device and vehicle

Abstract

The invention belongs to the technical field of vehicle driving, and particularly relates to a wheel-track conversion type vehicle driving device and a vehicle, and the wheel-track conversion type vehicle driving device comprises a hydraulic driving mechanism, a driving arm, a rack, a loading wheel, a driving wheel, a driving wheel rotating arm, a track supporting wheel, an inducer, a track and the like. The hydraulic driving mechanism is connected with a hydraulic system installed on the vehicle body, hydraulic force output by the hydraulic system is obtained and transmitted to the driving arm, the driving arm transmits the hydraulic force to the rack, and lifting and descending of the wheel-track conversion type vehicle driving device are achieved under the action of the rack. And the vehicle is switched from a wheel walking mode to a combined mode of wheel walking and crawler walking, so that the excellent maneuverability and the walking ability of the vehicle on difficult road conditions such as mud roads, snowfields and abrupt slopes are ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle driving, and in particular relates to a wheel-track switching vehicle driving device and a vehicle, which can realize the switching of the vehicle from a wheel walking mode to a wheel walking and track walking combination mode. Background Art

[0002] Currently, the two most mature running mechanisms for special off-road vehicles are wheeled and tracked. Wheeled running mechanisms offer advantages such as high speed and efficiency, but their operating conditions are significantly limited, making them primarily suitable for high-speed travel on highways or good roads. Tracked running mechanisms offer strong adaptability and excellent off-road performance, but they are complex, relatively heavy, and have low operating speeds.

[0003] For special off-road vehicles that need to operate in different terrains and environments, especially when performing off-road mobility tasks such as troop projection and material transportation on the battlefield, the currently commonly used wheeled or tracked traveling mechanisms have obvious limitations in their applicable terrain and environmental ranges, and cannot meet the requirements of high mobility in good road conditions and high passability in bad road conditions at the same time.

[0004] Based on the above background, it is necessary to design a vehicle walking mechanism that can simultaneously meet high maneuverability and high passability, so as to realize the switching of the vehicle from the wheel walking mode to the combined wheel walking and track walking mode. Summary of the Invention

[0005] (1) Technical issues to be solved

[0006] The technical problem to be solved by the present invention is: how to provide a wheel-track conversion vehicle drive device and a vehicle, which can realize the switching of the vehicle from a wheel walking mode to a combination of wheel walking and track walking mode, so that the vehicle can simultaneously meet the high maneuverability in good road conditions and high passability in bad road conditions.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a wheel-track conversion vehicle drive device, which comprises: a hydraulic drive mechanism (1), a drive arm (2), a frame (3), a road wheel (4), a driving wheel (5), a driving wheel rotating arm (6), a track roller (7), an idler wheel (8), and a track (9);

[0009] The hydraulic drive mechanism (1) is connected to a hydraulic system installed on a vehicle body (10), obtains the hydraulic pressure output by the hydraulic system and transmits it to the drive arm (2);

[0010] The driving arm (2) is fixed between the hydraulic driving mechanism (1) and the frame (3) and is used to transmit the hydraulic pressure to the frame (3);

[0011] The road wheel (4), the driving wheel (5), the driving wheel rotating arm (6), the track roller (7), the idler wheel (8), and the crawler track (9) constitute a liftable crawler track assembly of the wheel-track conversion vehicle drive device; and under the action of the frame (3), the liftable crawler track assembly is lifted and lowered, so that the vehicle switches from a wheel walking mode to a wheel walking and crawler walking combined mode.

[0012] The working process of the liftable crawler assembly is:

[0013] When the liftable crawler assembly descends until the crawler (9) contacts the ground, the contact force between the ground and the crawler (9) causes the crawler ring formed by the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to perform a winding motion, while driving the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to rotate.

[0014] The liftable crawler assembly can be lifted and lowered independently. Under good road conditions, the liftable crawler assembly is in a lifted state, and the wheel drive alone provides power at this time.

[0015] On muddy dirt roads, snowy ground, and difficult climbing sections, the liftable track assembly can be lowered. At this time, the wheel drive system and the liftable track assembly work together to provide reliable driving force, ensuring that the vehicle maintains good maneuverability and passability.

[0016] When the liftable crawler assembly descends, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pushes the drive arm (2) downward to rotate clockwise around the hinge point with the vehicle body (10), and under the joint operation of the active wheel rotating arm (6), the frame (3) is driven to move downward in translation, and the frame (3) drives the active wheel (5), the road wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to move downward in translation at the same time. When the crawler (9) reaches the ground, the hydraulic drive mechanism (1) stops moving. When the crawler (9) reaches the ground, it contacts the ground, increasing the contact area between the vehicle and the ground and improving the vehicle's ability to pass through muddy dirt roads, snowy areas, and difficult climbing sections. Under the joint operation of the liftable crawler assembly and the wheel drive system, the vehicle is pushed to travel off-road.

[0017] When the liftable crawler assembly is lifted, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pulls the drive arm (2) upward to rotate counterclockwise around the hinge point with the vehicle body, and under the joint operation of the driving wheel rotating arm (6), the frame (3) is driven to move upward in translation, and the frame (3) drives the driving wheel (5), the road wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to move upward in translation at the same time. When the crawler (9) moves up to a certain distance from the ground, the hydraulic drive mechanism (1) stops. After the crawler (9) is separated from the ground, the movement resistance between the vehicle running system and the ground is reduced, and the maneuverability of the crawler vehicle under good road conditions is improved.

[0018] The wheel-track conversion vehicle drive device ensures the excellent maneuverability and running ability of the vehicle on difficult road conditions such as muddy roads, snowy ground, steep slopes, etc.

[0019] In addition, the present invention also provides a vehicle, which includes the wheel-track conversion vehicle drive device.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides a wheel-track changeover vehicle drive device and a vehicle. The wheel-track changeover vehicle drive device can autonomously lift and lower a liftable track assembly under the action of hydraulic pressure, thereby realizing the switching of the vehicle from a wheel walking mode to a mode combining wheel walking and track walking, so that the vehicle can simultaneously meet the high maneuverability in good road conditions and the high passability in bad road conditions, which is of great significance to improving the maneuverability and adaptability of special off-road vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the wheel-track conversion vehicle drive device of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the wheel-track conversion vehicle drive device of the present invention when the liftable track assembly is in a lifted state;

[0024] Figure 3 It is a schematic structural diagram of the wheel-track conversion vehicle drive device of the present invention when the liftable track assembly is lowered to the road surface;

[0025] Reference numerals:

[0026] 1. Hydraulic drive mechanism; 2. Driving arm; 3. Frame; 4. Road wheel; 5. Driving wheel; 6. Driving wheel rotating arm; 7. Track roller; 8. Idler; 9. Track; 10. Vehicle body. DETAILED DESCRIPTION

[0027] In order to make the purpose, content, and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and examples.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0029] In order to solve the above technical problems, the present invention provides a wheel-track conversion vehicle drive device, which comprises: a hydraulic drive mechanism (1), a drive arm (2), a frame (3), a road wheel (4), a driving wheel (5), a driving wheel rotating arm (6), a track roller (7), an idler wheel (8), and a track (9);

[0030] The hydraulic drive mechanism (1) is connected to a hydraulic system installed on a vehicle body (10), obtains the hydraulic pressure output by the hydraulic system and transmits it to the drive arm (2);

[0031] The driving arm (2) is fixed between the hydraulic driving mechanism (1) and the frame (3) and is used to transmit the hydraulic pressure to the frame (3);

[0032] The road wheel (4), the driving wheel (5), the driving wheel rotating arm (6), the track roller (7), the idler wheel (8), and the crawler track (9) constitute a liftable crawler track assembly of the wheel-track conversion vehicle drive device; and under the action of the frame (3), the liftable crawler track assembly is lifted and lowered, so that the vehicle switches from a wheel walking mode to a wheel walking and crawler walking combined mode.

[0033] The working process of the liftable crawler assembly is:

[0034] When the liftable crawler assembly descends until the crawler (9) contacts the ground, the contact force between the ground and the crawler (9) causes the crawler ring formed by the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to perform a winding motion, while driving the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to rotate.

[0035] The liftable crawler assembly can be lifted and lowered independently. Under good road conditions, the liftable crawler assembly is in a lifted state, and the wheel drive alone provides power at this time.

[0036] On muddy dirt roads, snowy ground, and difficult climbing sections, the liftable track assembly can be lowered. At this time, the wheel drive system and the liftable track assembly work together to provide reliable driving force, ensuring that the vehicle maintains good maneuverability and passability.

[0037] When the liftable crawler assembly descends, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pushes the drive arm (2) downward to rotate clockwise around the hinge point with the vehicle body (10), and under the joint operation of the active wheel rotating arm (6), the frame (3) is driven to move downward in translation, and the frame (3) drives the active wheel (5), the road wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to move downward in translation at the same time. When the crawler (9) reaches the ground, the hydraulic drive mechanism (1) stops moving. When the crawler (9) reaches the ground, it contacts the ground, increasing the contact area between the vehicle and the ground and improving the vehicle's ability to pass through muddy dirt roads, snowy areas, and difficult climbing sections. Under the joint operation of the liftable crawler assembly and the wheel drive system, the vehicle is pushed to travel off-road.

[0038] When the liftable crawler assembly is lifted, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pulls the drive arm (2) upward to rotate counterclockwise around the hinge point with the vehicle body, and under the joint operation of the driving wheel rotating arm (6), the frame (3) is driven to move upward in translation, and the frame (3) drives the driving wheel (5), the road wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to move upward in translation at the same time. When the crawler (9) moves up to a certain distance from the ground, the hydraulic drive mechanism (1) stops. After the crawler (9) is separated from the ground, the movement resistance between the vehicle running system and the ground is reduced, and the maneuverability of the crawler vehicle under good road conditions is improved.

[0039] The wheel-track conversion vehicle drive device ensures the excellent maneuverability and running ability of the vehicle on difficult road conditions such as muddy roads, snowy ground, steep slopes, etc.

[0040] In addition, the present invention also provides a vehicle, which includes the wheel-track conversion vehicle drive device.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wheel-track conversion vehicle drive device, characterized in that: The wheel-track conversion vehicle drive device comprises: a hydraulic drive mechanism (1), a drive arm (2), a frame (3), a road wheel (4), a driving wheel (5), a driving wheel rotating arm (6), a track roller (7), an inducer wheel (8), and a track (9); The hydraulic drive mechanism (1) is connected to a hydraulic system installed on a vehicle body (10), obtains the hydraulic pressure output by the hydraulic system and transmits it to the drive arm (2); The driving arm (2) is fixed between the hydraulic driving mechanism (1) and the frame (3) and is used to transmit the hydraulic pressure to the frame (3); The road wheel (4), the driving wheel (5), the driving wheel rotating arm (6), the track roller (7), the idler wheel (8), and the crawler track (9) constitute a liftable crawler track assembly of the wheel-track conversion vehicle drive device; and under the action of the frame (3), the liftable crawler track assembly is lifted and lowered, so that the vehicle switches from a wheel walking mode to a wheel walking and crawler walking combined mode.

2. The wheel-track conversion vehicle drive device according to claim 1, wherein: The working process of the liftable crawler assembly is: When the liftable crawler assembly descends until the crawler (9) contacts the ground, the contact force between the ground and the crawler (9) causes the crawler ring formed by the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to perform a winding motion, while driving the road wheel (4), the driving wheel (5), the track roller (7), and the inducer (8) to rotate.

3. The wheel-track conversion vehicle drive device according to claim 2, wherein: The liftable crawler assembly can be lifted and lowered independently. Under good road conditions, the liftable crawler assembly is in a lifted state, and the wheel drive alone provides power at this time.

4. The wheel-track conversion vehicle drive device according to claim 2, wherein: On muddy dirt roads, snowy ground, and difficult climbing sections, the liftable track assembly can be lowered. At this time, the wheel drive system and the liftable track assembly work together to provide reliable driving force, ensuring that the vehicle maintains good maneuverability and passability.

5. The wheel-track conversion vehicle drive device according to claim 4, wherein: When the liftable crawler assembly descends, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pushes the drive arm (2) downward to rotate clockwise around the hinge point with the vehicle body (10), and under the joint operation of the active wheel rotating arm (6), the frame (3) is driven to perform translational movement downward, and the frame (3) drives the active wheel (5), the load-bearing wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to perform translational movement downward at the same time. When the crawler (9) reaches the ground, the hydraulic drive mechanism (1) stops moving.

6. The wheel-track conversion vehicle drive device according to claim 5, wherein: The crawler (9) contacts the ground when it reaches the ground, thereby increasing the contact area between the vehicle and the ground and improving the vehicle's ability to pass through muddy dirt roads, snowy areas, and difficult slopes. The liftable crawler assembly and the wheel drive system work together to propel the vehicle off-road.

7. The wheel-track conversion vehicle drive device according to claim 5, wherein: When the liftable crawler assembly is lifted, the hydraulic cylinder piston rod of the hydraulic drive mechanism (1) pulls the drive arm (2) upward to rotate counterclockwise around the hinge point with the vehicle body. Under the joint operation of the active wheel rotating arm (6), the frame (3) is driven to move upward in translation. The frame (3) drives the active wheel (5), the road wheel (4), the idler wheel (8), the track roller (7) and the crawler (9) to move upward in translation at the same time. When the crawler (9) moves up to a certain distance from the ground, the hydraulic drive mechanism (1) stops moving.

8. The wheel-track conversion vehicle drive device according to claim 7, wherein: After the crawler track (9) is separated from the ground, the movement resistance between the vehicle running system and the ground is reduced, and the maneuverability of the crawler track vehicle under good road conditions is improved.

9. The wheel-track conversion vehicle drive device according to claim 7, wherein: The wheel-track conversion vehicle drive device ensures the excellent maneuverability and running ability of the vehicle on difficult road conditions such as muddy roads, snowy ground, steep slopes, etc.

10. A vehicle, characterized in that: The vehicle includes the wheel-track conversion vehicle drive device according to any one of claims 1 to 9.

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