Variable mode walking mechanism for an all terrain vehicle

Abstract

The utility model discloses a variable mode walking mechanism for all terrain vehicle, including track body, drive wheel body, action support, mobile arm assembly and hydraulic cylinder, the track body is all rubber flexible track, drive wheel body is arranged in the track body and is in contact with the inner wall of track body, action support is arranged on drive wheel body, two mobile arm assembly symmetrical arrangement is on drive wheel body and is connected with action support, two hydraulic cylinders symmetrical arrangement is on drive wheel body, and hydraulic cylinder piston end is connected with mobile arm assembly, this variable mode walking mechanism for all terrain vehicle, simple and reasonable structure, clever design, to realize different track body ground contact length and ground contact area, ensure the high passability under the soft ground, the obstacle passing performance and the high mobility performance under the hard ground, the whole structure symmetry, the processing and manufacturing aspect, system stability is good.

Description

Technical Field

[0001] This utility model relates to the technical field of special vehicle running gear, specifically a variable mode running gear for all-terrain vehicles. Background Technology

[0002] All-terrain vehicles need to operate in various terrain environments, such as mud pits, deserts, gravel roads, forest trails, narrow slopes, and areas with numerous speed bumps. Traditional running gear systems are often only adaptable to certain terrains and cannot perform well in all conditions. For example, wheeled running gears have good maneuverability, smooth movement, and low energy consumption on flat roads, but poor passability on unpaved terrains such as mountains and valleys. Tracked running gears, while having good traction and passability on unpaved terrains, are complex in structure, heavy, have easily worn parts, and poor maneuverability. Therefore, there is a need to develop a variable-mode running gear system that can flexibly switch running modes according to different terrain conditions. By combining and leveraging the advantages of different running gear, all-terrain vehicles with variable-mode running gear systems can achieve better handling, stability, and passability by adjusting the shape and operation of the running gear. For example, on flat roads where fast travel is required, it can switch to high-mobility mode to enable rapid vehicle passage; when encountering uneven or soft terrain, it can switch to tracked mode or other suitable modes to increase the vehicle's ground contact area and traction, thereby improving its passability. In addition, the variable-mode running gear system can also freely switch between different modes of travel, broadening the vehicle's travel options in different environments and improving its passability and travel efficiency in complex environments.

[0003] Currently, all-terrain vehicle (ATV) running gear mainly includes wheel-track combination, wheel-track interchangeable, and deformable wheel types. However, these types all have some drawbacks. Wheel-track combination systems are complex in structure, difficult to design and manufacture, increase cost and weight, occupy a large space, and have poor reliability. Wheel-track interchangeable systems usually require specialized tools and equipment, making the replacement process cumbersome, difficult to carry, and costly to maintain. Deformable wheels mainly change the shape of the wheel to achieve the change between wheel-type and track-type drive modes, but this requires a complex mechanical structure and control system to achieve the shape change, resulting in disadvantages such as complex structure, reduced reliability, limited load-bearing capacity, and limited passability. Therefore, it is necessary to develop a new variable-mode running gear system to overcome the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a variable-mode walking mechanism for all-terrain vehicles to solve the problem mentioned in the background art that existing walking mechanisms are difficult to adapt to different terrains.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a variable-mode walking mechanism for all-terrain vehicles, comprising a track body, a drive wheel body, a travel bracket, a boom assembly, and hydraulic cylinders; the track body is a fully rubber flexible track; the drive wheel body is arranged inside the track body and contacts the inner wall of the track body; the travel bracket is arranged on the drive wheel body; two boom assemblies are symmetrically arranged on the drive wheel body and connected to the travel bracket; two hydraulic cylinders are symmetrically arranged on the drive wheel body, and the piston end of the hydraulic cylinder is connected to the boom assembly.

[0006] Preferably, the drive wheel body is a double-rimmed geared drive wheel, and the drive wheel body includes a hub, a drive wheel axle, a geared ring body, and a fixing bolt; there are two hubs, and the two hubs are connected by the drive wheel axle; the drive wheel axle receives power input from the drive motor, and the drive wheel axle is connected to the moving bracket; the geared ring body is fixed on the outer circumferential surface of the hub; the fixing bolt is screwed onto the drive wheel axle.

[0007] Preferably, the moving support includes a support body, fixed wheel axles, ground-contact load-bearing wheels, and locking bolts A; the support body is mounted on the drive wheel axle; the two fixed wheel axles are symmetrically rotatably mounted on the support body; the two ground-contact load-bearing wheels are symmetrically mounted on the fixed wheel axles via locking bolts A and contact the inner wall of the track body.

[0008] Preferably, the boom assembly includes a boom body, a movable wheel axle, a liftable load-bearing wheel, and a locking bolt B; the boom body is mounted on the fixed wheel axle; the movable wheel axle is rotatably mounted on the boom body; the two liftable load-bearing wheels are symmetrically mounted on the movable wheel axle via the locking bolt B and contact the inner wall of the track body.

[0009] Preferably, the hydraulic cylinder includes a cylinder body, a cylinder mounting seat, a fixed pin, a piston rod mounting seat, and a movable pin; the cylinder mounting seat is fixed on the cylinder body and is rotatably connected to the support body via the fixed pin; the piston rod mounting seat is fixed on the piston rod of the cylinder body; the movable pin is rotatably connected to the boom body via a guide assembly, and a locking nut is provided on the movable pin.

[0010] Preferably, the guiding assembly includes a guide groove and a guide block; at least one guide groove is provided on the boom body; the guide block is slidably disposed in the guide groove and fixedly connected to the piston rod mounting seat.

[0011] Preferably, the guide groove has an arc-shaped structure, and the arc of the guide groove is 0-90 degrees.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model comprises a track body, a drive wheel body, a traveling bracket, a boom assembly, and a hydraulic cylinder. Activating the hydraulic cylinder extends the piston rod, causing the hydraulic cylinder to rotate the boom body and the liftable load-bearing wheel via a fixed and movable pin until the lower ends of the normally grounded load-bearing wheel and the liftable load-bearing wheel are on the same plane. At this point, the track body's ground contact length and ground contact area are at their maximum. This working mode is primarily used to achieve communication capabilities in soft ground conditions such as sand, clay, and swamps. Activating the hydraulic cylinder shortens the piston rod, causing the hydraulic cylinder to rotate the boom body and the liftable load-bearing wheel via a fixed and movable pin. The lifting road wheel rotates in the opposite direction until the lower end of the normally grounded road wheel and the lower end of the liftable road wheel are no longer on the same plane. At this point, the ground contact length and ground contact area of ​​the track body are minimized, reducing friction and wear between the track body and the ground during travel, facilitating high-speed vehicle travel. At the same time, the liftable road wheel improves obstacle clearance. Compared with the prior art, this utility model has a simple and reasonable structure and ingenious design to achieve different track body ground contact lengths and ground contact areas, ensuring high passability and obstacle clearance under soft ground and high mobility under hard ground. The overall structure is symmetrical, and the system has good stability in terms of processing and manufacturing.

[0014] 2. By setting a guide component, the guide block will slide from the inner wall of the guide groove on the other side to the inner wall of the guide groove on one side during the rotation of the boom body, until the guide block slides to the inner wall of the guide groove on one side. At this time, the lower end of the normally grounded load wheel and the lower end of the liftable load wheel may or may not be on the same plane. Since the guide groove is an arc-shaped structure, it can not only guide the rotation of the boom body, but also limit the rotation range of the boom body, thereby improving the practicality of the present invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of another state of the overall structure of this utility model;

[0017] Figure 3 This is a schematic plan view of the overall structure of this utility model;

[0018] Figure 4 This is a sectional view showing the overall structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the drive wheel body of this utility model;

[0020] Figure 6 This is a schematic diagram of the motion support of this utility model;

[0021] Figure 7This is a schematic diagram of the boom assembly of this utility model;

[0022] Figure 8 This is a schematic diagram of the hydraulic cylinder of this utility model;

[0023] Figure 9 For the present utility model Figure 4 Enlarged diagram of point A in the middle.

[0024] In the picture:

[0025] 1. Track body; 2. Drive wheel body; 3. Traveling bracket; 4. Boom assembly; 5. Hydraulic cylinder; 6. Guide assembly;

[0026] 201. Wheel hub; 202. Drive axle; 203. Gear ring body; 204. Fixing bolt;

[0027] 301. Support body; 302. Fixed axle; 303. Grounded load-bearing wheel; 304. Locking bolt A;

[0028] 401. Boom body; 402. Movable wheel axle; 403. Liftable load-bearing wheel; 404. Locking bolt B;

[0029] 501. Cylinder block; 502. Cylinder mounting base; 503. Fixed pin; 504. Piston rod mounting base; 505. Movable pin;

[0030] 601. Guide groove; 602. Guide block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, this utility model provides a technical solution: a variable mode walking mechanism for all-terrain vehicles, including a track body 1, a drive wheel body 2, a travel bracket 3, a boom assembly 4, and hydraulic cylinders 5; the track body 1 is a fully rubber flexible track; the drive wheel body 2 is arranged inside the track body 1 and contacts the inner wall of the track body 1; the travel bracket 3 is arranged on the drive wheel body 2; two boom assemblies 4 are symmetrically arranged on the drive wheel body 2 and connected to the travel bracket 3; two hydraulic cylinders 5 are symmetrically arranged on the drive wheel body 2, and the piston end of the hydraulic cylinder 5 is connected to the boom assembly 4;

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the drive wheel body 2 is a double-rimmed geared drive wheel, and the drive wheel body 2 includes a hub 201, a drive wheel axle 202, a geared ring body 203, and a fixing bolt 204; there are two hubs 201, and the two hubs 201 are connected by the drive wheel axle 202; the drive wheel axle 202 receives power input from the drive motor, and the drive wheel axle 202 is connected to the moving bracket 3; the geared ring body 203 is fixed on the outer circumferential surface of the hub 201; the fixing bolt 204 is screwed onto the drive wheel axle 202;

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the moving support 3 includes a support body 301, fixed wheel axles 302, normally grounded load-bearing wheels 303, and locking bolts A304; the support body 301 is mounted on the drive wheel axle 202; the two fixed wheel axles 302 are symmetrically rotatably mounted on the support body 301; the two normally grounded load-bearing wheels 303 are symmetrically mounted on the fixed wheel axles 302 by locking bolts A304 and contact the inner wall of the track body 1.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the boom assembly 4 includes a boom body 401, a movable wheel axle 402, a liftable load-bearing wheel 403, and a locking bolt B404; the boom body 401 is mounted on the fixed wheel axle 302; the movable wheel axle 402 is rotatably mounted on the boom body 401; the two liftable load-bearing wheels 403 are symmetrically mounted on the movable wheel axle 402 by the locking bolt B404 and contact the inner wall of the track body 1;

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the hydraulic cylinder 5 includes a cylinder body 501, a cylinder mounting seat 502, a fixed pin 503, a piston rod mounting seat 504, and a movable pin 505. The cylinder mounting seat 502 is fixed on the cylinder body 501, and the cylinder mounting seat 502 is rotatably connected to the support body 301 through the fixed pin 503. The piston rod mounting seat 504 is fixed on the piston rod of the cylinder body 501. The movable pin 505 is rotatably connected to the boom body 401 through the guide assembly 6, and a locking nut is provided on the movable pin 505.

[0037] This utility model comprises a track body 1, a drive wheel body 2, a traveling bracket 3, a boom assembly 4, and a hydraulic cylinder 5. Activating the hydraulic cylinder 5 extends its piston rod, causing the hydraulic cylinder 5 to drive the boom body 401 and the liftable load-bearing wheel 403 to rotate via a fixed pin 503 and a movable pin 505. Rotation continues until the lower ends of the normally grounded load-bearing wheel 303 and the liftable load-bearing wheel 403 are on the same plane. At this point, the ground contact length and ground contact area of ​​the track body 1 are at their maximum. This working mode is primarily used to achieve communication capabilities in soft ground conditions such as sand, clay, and swamps. Activating the hydraulic cylinder 5 shortens its piston rod, causing the hydraulic cylinder 5 to drive the boom body 401 and the liftable load-bearing wheel 403 via a fixed pin 503 and a movable pin 505. The boom body 401 and the liftable road wheel 403 rotate in opposite directions until the lower end of the normally grounded road wheel 303 and the lower end of the liftable road wheel 403 are no longer on the same plane. At this time, the ground contact length and ground contact area of ​​the track body 1 are minimized, reducing friction and wear between the track body 1 and the ground during the walking process, which facilitates high-speed vehicle travel. At the same time, the liftable road wheel 403 improves obstacle clearance. Compared with the prior art, this utility model has a simple and reasonable structure and ingenious design to achieve different ground contact lengths and ground contact areas of the track body 1, ensuring high passability and obstacle clearance under soft ground and high mobility under hard ground. The overall structure is symmetrical, and the system has good stability in terms of processing and manufacturing.

[0038] like Figure 4 , Figure 7 , Figure 8 and Figure 9 As shown, in a preferred embodiment, the guide assembly 6 includes a guide groove 601 and a guide block 602; two guide grooves 601 are symmetrically opened on both sides of the boom body 401; the guide block 602 is slidably inserted in the guide groove 601 and fixedly connected to the piston rod mounting seat 504; the guide groove 601 has an arc-shaped structure and the arc of the guide groove 601 is 0-90 degrees.

[0039] By setting the guide component 6, the guide block 602 slides from the inner wall of the guide groove 601 on the other side to the inner wall of the guide groove 601 on one side during the rotation of the boom body 401. The guide block 602 slides to the inner wall of the guide groove 601 on one side. At this time, the lower end of the normally grounded load wheel 303 and the lower end of the liftable load wheel 403 may or may not be on the same plane. Since the guide groove 601 has an arc-shaped structure, it can not only guide the rotation of the boom body 401, but also limit the rotation range of the boom body 401, thereby improving the practicality of the present invention.

[0040] Working principle: From Figure 2 Switch to Figure 1 During the process, the piston rod of hydraulic cylinder 5 extends, causing hydraulic cylinder 5 to drive boom body 401 and liftable load wheel 403 to rotate through fixed pin 503 and movable pin 505. This causes guide block 602 to slide from one side of the inner wall of guide groove 601 to the other side of the inner wall of guide groove 601 until guide block 602 slides to the other side of the inner wall of guide groove 601. At this time, the low end of the normally grounded load wheel 303 and the low end of the liftable load wheel 403 are on the same plane, and the grounding length and grounding area of ​​track body 1 are at their maximum. This working mode is mainly used to realize communication capability under soft ground conditions such as sand, clay, and swamp.

[0041] from Figure 1 Switch to Figure 2 During the process, the piston rod of the hydraulic cylinder 5 shortens, causing the hydraulic cylinder 5 to drive the boom body 401 and the liftable road wheel 403 to rotate in the opposite direction through the fixed pin 503 and the movable pin 505. This causes the guide block 602 to slide from the inner wall of the other side of the guide groove 601 to the inner wall of one side of the guide groove 601 until the guide block 602 slides to the inner wall of one side of the guide groove 601. At this time, the low end of the normally grounded road wheel 303 and the low end of the liftable road wheel 403 are not on the same plane, and the grounding length and grounding area of ​​the track body 1 are minimized, reducing the friction and wear between the track body 1 and the ground during the walking process, which facilitates the high-speed driving of the vehicle. At the same time, the liftable road wheel 403 improves the obstacle crossing ability.

[0042] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable-mode walking mechanism for all-terrain vehicles, characterized in that, The system includes a track body (1), a drive wheel body (2), a travel bracket (3), a boom assembly (4), and a hydraulic cylinder (5). The track body (1) is a fully rubber flexible track. The drive wheel body (2) is arranged inside the track body (1) and contacts the inner wall of the track body (1). The travel bracket (3) is arranged on the drive wheel body (2). Two boom assemblies (4) are symmetrically arranged on the drive wheel body (2) and connected to the travel bracket (3). Two hydraulic cylinders (5) are symmetrically arranged on the drive wheel body (2), and the piston end of the hydraulic cylinder (5) is connected to the boom assembly (4).

2. The variable-mode walking mechanism for all-terrain vehicles according to claim 1, characterized in that, The drive wheel body (2) is a double-rimmed gear ring drive wheel, and the drive wheel body (2) includes a hub (201), a drive wheel shaft (202), a gear ring body (203), and a fixing bolt (204); there are two hubs (201), and the two hubs (201) are connected by the drive wheel shaft (202); the drive wheel shaft (202) receives power input from the drive motor, and the drive wheel shaft (202) is connected to the moving bracket (3); the gear ring body (203) is fixed on the outer circumferential surface of the hub (201); the fixing bolt (204) is screwed onto the drive wheel shaft (202).

3. The variable-mode walking mechanism for all-terrain vehicles according to claim 2, characterized in that, The moving support (3) includes a support body (301), fixed wheel axles (302), ground-mounted load-bearing wheels (303), and locking bolts A (304); the support body (301) is mounted on the drive wheel axle (202); the two fixed wheel axles (302) are symmetrically rotated on the support body (301); the two ground-mounted load-bearing wheels (303) are symmetrically arranged on the fixed wheel axles (302) through locking bolts A (304) and contact the inner wall of the track body (1).

4. The variable-mode running gear for an all-terrain vehicle according to claim 3, characterized in that, The boom assembly (4) includes a boom body (401), a movable wheel axle (402), a liftable load-bearing wheel (403), and a locking bolt B (404); the boom body (401) is mounted on a fixed wheel axle (302); the movable wheel axle (402) is rotatably mounted on the boom body (401); the two liftable load-bearing wheels (403) are symmetrically mounted on the movable wheel axle (402) and contact the inner wall of the track body (1) through the locking bolt B (404).

5. The variable-mode running gear for an all-terrain vehicle according to claim 4, characterized in that, The hydraulic cylinder (5) includes a cylinder body (501), a cylinder mounting seat (502), a fixed pin (503), a piston rod mounting seat (504), and a movable pin (505). The cylinder mounting seat (502) is fixed on the cylinder of the cylinder body (501), and the cylinder mounting seat (502) is rotatably connected to the support body (301) through the fixed pin (503). The piston rod mounting seat (504) is fixed on the piston rod of the cylinder body (501). The movable pin (505) is rotatably connected to the boom body (401) through the guide assembly (6), and a locking nut is provided on the movable pin (505).

6. The variable-mode walking mechanism for all-terrain vehicles according to claim 5, characterized in that, The guide assembly (6) includes a guide groove (601) and a guide block (602); at least one guide groove (601) is provided on the boom body (401); the guide block (602) slides through the guide groove (601) and is fixedly connected to the piston rod mounting seat (504).

7. The variable-mode running gear for an all-terrain vehicle according to claim 6, characterized in that, The guide groove (601) has an arc-shaped structure, and the arc of the guide groove (601) is 0-90 degrees.

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