Heavy-duty unmanned vehicle drive

Abstract

The utility model discloses a heavy -duty unmanned vehicle drive arrangement relates to unmanned vehicle drive arrangement technical field, including support subassembly, support subassembly is connected with the frame each other, the support subassembly both ends bottom is equipped with drive component and damping component respectively. This heavy -duty unmanned vehicle drive arrangement, support subassembly, drive component and damping component constitute independent drive unit, can realize power output and damping buffer control of corresponding wheel alone, and this modular structure is convenient for single wheel independent maintenance and performance debugging, has improved the adaptive capacity of device to complex working condition, the U -shaped bearing frame is connected through the damping mounting seat hinged connecting frame, and the spring shock absorber forms the elastic buffer structure, and the rotating surface of connecting frame and spring shock absorber and drive shaft axis are located in same vertical plane, realize the space cooperation of damping buffer and power transmission. The bearing in bearing seat effectively reduces the drive shaft rotation friction, prolongs the service life of part.

Description

Technical Field

[0001] This utility model relates to the field of unmanned vehicle drive device technology, specifically a heavy-duty unmanned vehicle drive device. Background Technology

[0002] The term "autonomous vehicle drive system" refers to the collective mechanical and electronic systems that provide power output, steering, and motion control for autonomous vehicles.

[0003] For example, Chinese patent CN116766912A discloses an unmanned vehicle drive device. Its technical solution is as follows: An unmanned vehicle drive device includes a steering mechanism, a wheel hub drive shaft rotatably connected to the steering mechanism, a front tire rotatably connected to the wheel hub drive shaft, and a front auxiliary drive mechanism also mounted on the steering mechanism. The front auxiliary drive mechanism includes a motor mounting base fixed to the steering mechanism, an auxiliary motor mounted on the motor mounting base, a one-way bearing connected to the rotating shaft of the auxiliary motor, and a transmission mechanism connecting the one-way bearing and the wheel hub drive shaft. This unmanned vehicle drive device can improve the overall vehicle power performance when high torque output is required and reduce resistance when operating on flat roads.

[0004] Traditional integrated drive systems are difficult to distribute power to different wheels, and require complete disassembly for maintenance, resulting in low efficiency. The interference between traditional damping structures and the power transmission path can lead to power loss or damping failure. Utility Model Content

[0005] The purpose of this invention is to provide a heavy-duty unmanned vehicle drive device to solve the problems in the background art where traditional integrated drive devices are difficult to distribute power to different wheels and require complete disassembly for maintenance, resulting in low efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty unmanned vehicle drive device, comprising a support assembly, wherein the support assembly is interconnected with the vehicle frame, and a drive assembly and a shock-absorbing assembly are respectively mounted at the bottom of both ends of the support assembly, wherein the support assembly, the drive assembly, and the shock-absorbing assembly constitute an independent drive unit;

[0007] The shock absorption assembly includes a load-bearing frame with a U-shaped structure. Two symmetrically distributed shock-absorbing mounting seats are fixedly connected to the top of the load-bearing frame. A connecting frame is hinged to the top of the load-bearing frame through the two shock-absorbing mounting seats. The connecting frame is distributed in an inverted U-shape and is fixedly connected to a spring shock absorber. Two coaxial bearing seats are fixedly connected in the middle of the load-bearing frame, and bearings are installed inside the bearing seats.

[0008] Preferably, a drive shaft is mounted inside the two bearing seats via bearings, with the two ends of the drive shaft located on both sides of the load-bearing frame, and the rotating surfaces of the connecting frame and the spring damper are located on the same vertical plane as the axis of the drive shaft.

[0009] Preferably, both ends of the load-bearing frame are provided with first connecting seats that are symmetrically distributed vertically, and the outer side of the drive shaft away from the load-bearing frame is fixedly connected to a wheel hub by bolts, and a tire is installed on the outer side of the wheel hub.

[0010] Preferably, the drive assembly includes a fixed frame, a power motor is fixedly connected inside the fixed frame, and a drive shaft is fixedly connected to the output end of the power motor.

[0011] Preferably, both ends of the drive shaft are connected to the output end of the power motor and the end of the drive shaft away from the wheel hub via cross shafts, and both ends of the drive shaft form a universal joint transmission structure via cross shafts.

[0012] Preferably, the fixed frame is fixedly connected to two sides of the end near the output end of the power motor with two second connecting seats symmetrically distributed vertically. Two parallel connecting rods are hinged between the second connecting seat and the first connecting seat, and two parallel connecting rods are provided on both sides of the transmission shaft.

[0013] Preferably, the support assembly includes a connecting plate that is fixedly connected to the bottom of the vehicle frame, a fixing seat that is fixedly connected to one bottom end of the connecting plate, the fixing seat that is hinged to the top of the spring shock absorber, and a support platform that is fixedly connected to the bottom end of the connecting plate away from the fixing seat, the support platform that is fixedly connected to the top of the fixing frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This heavy-duty unmanned vehicle drive device comprises a support component, a drive component, and a shock-absorbing component forming an independent drive unit. It can independently realize the power output and shock absorption control of the corresponding wheel. This modular structure facilitates independent maintenance and performance debugging of each wheel, improving the device's adaptability to complex working conditions. The U-shaped load-bearing frame is hinged to the shock-absorbing mounting base and forms an elastic buffer structure with the spring shock absorber. The rotation surfaces of the connecting frame and the spring shock absorber are located on the same vertical plane as the drive shaft axis, realizing spatial coordination of shock absorption and power transmission. The bearings in the bearing housing effectively reduce the rotational friction of the drive shaft and extend the service life of the components.

[0016] The U-shaped load-bearing frame is hinged to the shock-absorbing mounting base and forms an elastic buffer structure with the spring shock absorber. The rotation surfaces of the connecting frame and the spring shock absorber are located on the same vertical plane as the drive shaft axis, realizing spatial coordination of shock absorption and power transmission. The parallel connecting rods between the second connecting base and the first connecting base are designed to limit the swaying direction of the load-bearing frame and prevent it from shifting laterally or twisting, while also helping to disperse the impact force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the load-bearing frame structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the spring shock absorber structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the parallel link structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the transmission shaft structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the connecting plate structure of this utility model.

[0023] In the diagram: 1. Support assembly; 2. Drive assembly; 3. Shock absorber assembly; 4. Load-bearing frame; 5. Bearing housing; 6. Drive shaft; 7. Shock absorber mounting base; 8. Connecting frame; 9. Spring shock absorber; 10. First connecting base; 11. Wheel hub; 12. Tire; 13. Fixing frame; 14. Power motor; 15. Transmission shaft; 16. Second connecting base; 17. Parallel connecting rod; 18. Connecting plate; 19. Fixing base; 20. Support platform. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figures 1 to 3 The present invention provides the following technical solution:

[0026] like Figure 1As shown, a heavy-duty unmanned vehicle drive device includes a support assembly 1, which is connected to the vehicle frame. A drive assembly 2 and a shock-absorbing assembly 3 are respectively mounted on the bottom of both ends of the support assembly 1. The support assembly 1, drive assembly 2, and shock-absorbing assembly 3 constitute an independent drive unit. Figure 2 and Figure 3 As shown, the shock absorption assembly 3 includes a load-bearing frame 4, which is designed as a U-shaped structure. Two symmetrically distributed shock absorption mounting seats 7 are fixedly connected to the top of the load-bearing frame 4. A connecting frame 8 is hinged to the top of the load-bearing frame 4 through the two shock absorption mounting seats 7. The connecting frame 8 is distributed in an inverted U-shaped structure. A spring shock absorber 9 is fixedly connected to the connecting frame 8. Two coaxial bearing seats 5 are fixedly connected in the middle of the load-bearing frame 4. Bearings are installed inside the bearing seats 5.

[0027] like Figure 2 and Figure 3 As shown, a drive shaft 6 is installed inside the two bearing seats 5 through bearings. The two ends of the drive shaft 6 are located on both sides of the load-bearing frame 4. The rotating surfaces of the connecting frame 8 and the spring shock absorber 9 are on the same vertical plane as the axis of the drive shaft 6. The load-bearing frame 4 is provided with first connecting seats 10 symmetrically distributed at both ends. The outer side of the drive shaft 6 away from the load-bearing frame 4 is fixedly connected to a wheel hub 11 by bolts. A tire 12 is installed on the outer side of the wheel hub 11.

[0028] The support component 1 first forms a stable connection with the frame of the unmanned vehicle, providing basic installation support for the entire drive unit; the drive component 2 and the shock absorption component 3 installed at the bottom of both ends of the support component 1, together with the support component 1, form an independent drive unit, which can independently realize power output and shock absorption at the corresponding position of the unmanned vehicle.

[0029] When the drive assembly 2 outputs power, the power can be transmitted to the drive shaft 6 in the shock absorption assembly 3. Since the drive shaft 6 is installed inside the two coaxial bearing seats 5 in the middle of the load-bearing frame 4 through bearings, the bearings can reduce the frictional resistance when the drive shaft 6 rotates, so that the drive shaft 6 can rotate smoothly. When the drive shaft 6 rotates, the wheel hub 11, which is fixed to the outer side of the end away from the load-bearing frame 4 by bolts, will rotate synchronously. The tire 12 installed on the outer side of the wheel hub 11 will rotate under the drive of the wheel hub 11, and finally realize the driving action of the unmanned vehicle.

[0030] When the unmanned vehicle travels on uneven roads and experiences bumps, the impact force on the tire 12 is first transmitted to the wheel hub 11, and then transmitted to the load-bearing frame 4 through the drive shaft 6. At this time, the connecting frame 8, which is hinged to the top of the load-bearing frame 4 through two symmetrically distributed shock-absorbing mounting seats 7, can rotate adaptively around the hinge point. At the same time, the spring shock absorber 9 fixedly connected to the connecting frame 8 will undergo elastic deformation according to the shaking of the load-bearing frame 4, and absorb part of the impact force through deformation, thereby mitigating the impact of bumps on the support component 1 and the vehicle frame. In addition, the first connecting seats 10, which are symmetrically distributed at both ends of the load-bearing frame 4, can serve as the connection interface between the load-bearing frame 4 and other components, ensuring the structural stability of the load-bearing frame 4 during shock absorption and preventing the components from becoming loose due to shaking.

[0031] Example 2: Based on Example 1, please refer to... Figures 4 to 6 The following structure was also disclosed:

[0032] like Figure 4 and Figure 5 As shown, the drive assembly 2 includes a fixed frame 13, inside which a power motor 14 is fixedly connected, and the output end of the power motor 14 is fixedly connected to a drive shaft 15; the two ends of the drive shaft 15 are respectively connected to the output end of the power motor 14 and the end of the drive shaft 6 away from the hub 11 through cross shafts, and both ends of the drive shaft 15 form a universal joint transmission structure through cross shafts; the two sides of the fixed frame 13 near the output end of the power motor 14 are fixedly connected to two symmetrically distributed second connecting seats 16, and two parallel connecting rods 17 are hinged between the second connecting seats 16 and the first connecting seat 10, and two parallel connecting rods 17 are provided on both sides of the drive shaft 15.

[0033] like Figure 6 As shown, the support assembly 1 includes a connecting plate 18 that is fixedly connected to the bottom of the frame. A fixing seat 19 is fixedly connected to one bottom end of the connecting plate 18. The fixing seat 19 is hinged to the top of the spring shock absorber 9. A support platform 20 is fixedly connected to the bottom end of the connecting plate 18 away from the fixing seat 19. The support platform 20 is fixedly connected to the top of the fixing frame 13.

[0034] The support assembly 1 is fixedly connected to the bottom of the unmanned vehicle frame via the connecting plate 18. The fixed base 19, which is fixedly connected to the bottom of one end of the connecting plate 18, is hinged to the top of the spring shock absorber 9. This provides a mounting point for the spring shock absorber 9 and allows the spring shock absorber 9 to rotate at a certain angle during shock absorption, thus avoiding the limitation of the shock absorption effect by the rigid connection. The support platform 20, which is fixedly connected to the bottom of the connecting plate 18 away from the fixed base 19, is fixed to the top of the fixed frame 13 in the drive assembly 2. This provides stable installation support for the fixed frame 13 and ensures that the overall structure of the drive assembly 2 is not easily displaced during operation.

[0035] When power output is required, the power motor 14 fixedly connected inside the fixed frame 13 in the drive assembly 2 starts, and the output end of the power motor 14 drives the transmission shaft 15 fixedly connected to it to rotate. Since the two ends of the transmission shaft 15 are respectively connected to the output end of the power motor 14 and the end of the drive shaft 6 away from the wheel hub 11 through cross shafts, and both ends form a universal joint transmission structure through cross shafts, this structure can adapt to the possible angular deviation between the power motor 14 and the drive shaft 6. Even if the relative position of the two changes slightly during the shock absorption process, the transmission shaft 15 can still stably transmit the power of the power motor 14 to the drive shaft 6, and then drive the tire 12 to rotate through the drive shaft 6 and the wheel hub 11, so as to achieve effective power transmission.

[0036] During the shock absorption process, in addition to the buffering effect of the spring shock absorber 9, the two parallel connecting rods 17, which are symmetrically distributed at both ends of the fixed frame 13 near the output end of the power motor 14 and hinged to the first connecting rods 10 at both ends of the load-bearing frame 4, play an important guiding and stabilizing role. When the load-bearing frame 4 shakes up and down or back and forth due to bumps, the first connecting rod 10 will drive the parallel connecting rods 17 to rotate around the hinge point with the second connecting rod 16. Since there are two parallel connecting rods 17 on both sides of the drive shaft 15, the parallel structure of the parallel connecting rods 17 can limit the shaking direction of the load-bearing frame 4, prevent it from deviating or twisting, and ensure that the relative position between the drive shaft 6 and the drive shaft 15 is always within a reasonable range, without affecting the power transmission. At the same time, the hinged connection of the parallel connecting rods 17 can also help disperse the impact force on the load-bearing frame 4, further improving the shock absorption effect of the entire device and making the unmanned vehicle more stable when driving on complex road surfaces.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty unmanned vehicle drive device, comprising a support assembly (1), wherein the support assembly (1) is connected to the vehicle frame, and a drive assembly (2) and a shock absorber assembly (3) are respectively mounted on the bottom of both ends of the support assembly (1), wherein the support assembly (1), the drive assembly (2) and the shock absorber assembly (3) constitute an independent drive unit; characterized in that The shock absorption assembly (3) includes a load-bearing frame (4), which is U-shaped. Two symmetrically distributed shock-absorbing mounting seats (7) are fixedly connected to the top of the load-bearing frame (4). A connecting frame (8) is hinged to the top of the load-bearing frame (4) through the two shock-absorbing mounting seats (7). The connecting frame (8) is distributed in an inverted U-shape. A spring shock absorber (9) is fixedly connected to the connecting frame (8). Two coaxial bearing seats (5) are fixedly connected in the middle of the load-bearing frame (4). Bearings are installed inside the bearing seats (5).

2. The heavy duty unmanned vehicle drive device according to claim 1, characterized in that: The two bearing seats (5) are equipped with drive shafts (6) through bearings. The two ends of the drive shafts (6) are located on both sides of the load-bearing frame (4). The rotating surfaces of the connecting frame (8) and the spring damper (9) are on the same vertical plane as the axis of the drive shafts (6).

3. The heavy-duty unmanned vehicle drive device according to claim 2, characterized in that: The load-bearing frame (4) has first connecting seats (10) symmetrically distributed at both ends. The drive shaft (6) is fixedly connected to a hub (11) by bolts on the outer side of the end away from the load-bearing frame (4). A tire (12) is installed on the outer side of the hub (11).

4. The heavy-duty unmanned vehicle drive device according to claim 1, characterized in that: The drive assembly (2) includes a fixed frame (13), a power motor (14) is fixedly connected inside the fixed frame (13), and a transmission shaft (15) is fixedly connected to the output end of the power motor (14).

5. A heavy-duty unmanned vehicle drive device according to claim 4, characterized in that: The two ends of the drive shaft (15) are respectively connected to the output end of the power motor (14) and the end of the drive shaft (6) away from the hub (11) through cross shafts. Both ends of the drive shaft (15) form a universal joint transmission structure through cross shafts.

6. A heavy-duty unmanned vehicle drive device according to claim 5, characterized in that: The fixed frame (13) is fixedly connected to two sides of the output end of the power motor (14) with two second connecting seats (16) symmetrically distributed vertically. There are two parallel connecting rods (17) hinged between the second connecting seat (16) and the first connecting seat (10). There are two parallel connecting rods (17) on both sides of the transmission shaft (15).

7. A heavy-duty unmanned vehicle drive device according to claim 1, characterized in that: The support assembly (1) includes a connecting plate (18) that is fixedly connected to the bottom of the frame. A fixed seat (19) is fixedly connected to one end of the bottom of the connecting plate (18). The fixed seat (19) is hinged to the top of the spring shock absorber (9). A support platform (20) is fixedly connected to the bottom of the connecting plate (18) away from the fixed seat (19). The support platform (20) is fixedly connected to the top of the fixed frame (13).

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