Unmanned distribution stair climbing vehicle with auxiliary obstacle crossing mechanism

Abstract

The utility model relates to the technical field of distribution vehicles, and discloses an unmanned distribution stair climbing vehicle with an auxiliary obstacle crossing mechanism, which comprises a vehicle body, a front obstacle crossing component is arranged on the front side of the vehicle body, and a rear obstacle crossing component is arranged on the rear side of the vehicle body. Auxiliary obstacle crossing assemblies are arranged between the front obstacle crossing assembly and the rear obstacle crossing assembly and located on the two sides of the vehicle body. According to the unmanned distribution stair climbing vehicle with the auxiliary obstacle crossing mechanism, the auxiliary obstacle crossing assembly is used, especially in the stair climbing process, through cooperation of the supporting legs and the pressure sensors, it can be ensured that the stair climbing vehicle keeps stable in the climbing process. A feedback mechanism of the pressure sensor allows the stair climbing vehicle to intelligently recognize the contact condition with the stairs, so that the positions and the force of the supporting legs are adjusted to adapt to the stairs with different heights and shapes. Due to the design of flexible obstacle-crossing auxiliary wheels, windmill-shaped side sections of the obstacle-crossing auxiliary wheels and uniformly-distributed casters, the stair-climbing trolley can be in better contact with the stairs, and an acting point can be found.

Description

Technical Field

[0001] The utility model relates to the technical field of delivery vehicles, in particular to a self-driving delivery climbing vehicle with an auxiliary obstacle-crossing mechanism. Background Technique

[0002] With the continuous development and growth of online shopping in China, more and more people are shopping online. This change in social structure has brought an urgent need for efficient and convenient logistics services. Although the express logistics industry has made remarkable progress in the pre-processing work, it still faces challenges in the final delivery stage, especially in meeting the customers' demand for quick pick-up. As a key link in the entire logistics chain, the delivery link directly affects the customer experience and the operation efficiency of logistics enterprises.

[0003] Currently, when customers choose the door-to-door delivery service, the subsequent work process highly depends on manual operation, which not only consumes time but also leads to high labor costs, thus increasing the overall cost burden of the logistics industry. Especially in many cases, couriers need to climb stairs on foot to deliver goods, which not only increases their labor intensity but also significantly reduces the overall delivery efficiency.

[0004] Therefore, to address this issue, many self-driving delivery climbing vehicles have emerged. In the practical process, the climbing vehicles with front and rear obstacle-crossing functions have achieved good results whether carrying people or goods. However, due to different environments and increasing load weights, there are sometimes situations such as insufficient power, vehicle body slippage, and driving wheels being suspended. Content of the Utility Model

[0005] The purpose of the utility model is to provide a self-driving delivery climbing vehicle with an auxiliary obstacle-crossing mechanism to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-driving delivery climbing vehicle with an auxiliary obstacle-crossing mechanism includes a vehicle body. A front obstacle-crossing component is arranged on the front side of the vehicle body, a rear obstacle-crossing component is arranged on the rear side of the vehicle body, and auxiliary obstacle-crossing components are arranged on both sides of the vehicle body between the front obstacle-crossing component and the rear obstacle-crossing component;

[0008] The auxiliary obstacle-crossing component includes a support leg. A obstacle-crossing auxiliary wheel is arranged at the bottom of the support leg. A driving motor is connected to one side of the obstacle-crossing auxiliary wheel. An adjusting telescopic rod fixedly connected to the vehicle body is arranged at the top of the support leg.

[0009] Preferably, limiting slide rails are arranged on both the left and right sides in the driving direction of the vehicle body. A sliding sleeve is arranged on the outer wall of the obstacle-crossing auxiliary wheel, and the sliding sleeve is slidably connected to the limiting slide rail.

[0010] Preferably, a pressure sensor is provided on the adjustable telescopic rod.

[0011] Preferably, the side cross-section of the obstacle assistance wheel is windmill-shaped.

[0012] Preferably, the outer wall of the obstacle assisting wheel has three evenly distributed wheel casters.

[0013] Preferably, a base is provided on the rear side of the vehicle body, and a balance adjustment component is provided between the base and the vehicle body.

[0014] Preferably, travel drives are provided on both sides of the base.

[0015] Preferably, the balance adjustment assembly includes a rear frame fixedly connected to the vehicle body, sliders are fixedly connected to both sides of the rear frame, the sliders are slidably connected to the base, the bottom of the rear frame is rotatably connected to a balance telescopic rod, and the free end of the balance telescopic rod is rotatably connected to the base.

[0016] Preferably, the front obstacle crossing assembly comprises two swing arms, the tops of the two swing arms are connected by a crank, the outer walls of the two swing arms are slidably connected to limit members, and the two limit members are coaxial.

[0017] Preferably, the rear obstacle crossing assembly includes a pry bar and a limiting slide, one end of the pry bar is rotatably connected to a limiting slider, the limiting slider is slidably connected to the limiting slide, and the outer wall of the pry bar is rotatably connected to a crank connected to a drive motor.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The unmanned stair-climbing delivery vehicle with an auxiliary obstacle-climbing mechanism:

[0020] Enhanced stability: The use of auxiliary obstacle climbing components, especially during stair climbing, can ensure that the stair climbing vehicle remains stable during the climbing process through the cooperation of support legs and pressure sensors.

[0021] Intelligent adaptability: The feedback mechanism of the pressure sensor allows the stair climbing vehicle to intelligently identify the contact with the steps, thereby adjusting the position and strength of the supporting legs to adapt to steps of different heights and shapes.

[0022] Flexible obstacle-crossing training wheel design: The windmill-shaped side section and evenly distributed wheel feet of the obstacle-crossing training wheel enable the stair climbing vehicle to better contact the stairs and find a foothold.

[0023] Enhance the stability of the obstacle climbing training wheels: The design of the limited slide rail and the slide sleeve limits the moving track of the obstacle climbing training wheels, enhancing their stability during the climbing process.

[0024] Flexible climbing mechanism: The swing arm design of the front obstacle-crossing component and the crowbar design of the rear obstacle-crossing component enable the stair-climbing vehicle to perform climbing actions flexibly. An auxiliary obstacle-crossing component is designed between the front and rear obstacle-crossing components to reduce the probability that the vehicle body cannot climb due to insufficient power or lack of power application points, and to adapt to different stair structures.

[0025] Automated operation: The design of the entire system allows for automated operation, reducing manual intervention and improving distribution efficiency and safety. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the stair-climbing vehicle in a preferred embodiment of the present utility model;

[0027] Figure 2 It is a schematic structural diagram of the internal frame of the stair-climbing vehicle in a preferred embodiment of the present utility model;

[0028] Figure 3 It is a schematic structural diagram of the bottom of the stair-climbing vehicle in a preferred embodiment of the present utility model;

[0029] Figure 4 It is a schematic structural diagram of the outside of the auxiliary obstacle-crossing component in a preferred embodiment of the present utility model;

[0030] Figure 5 It is a schematic structural diagram of the inside of the auxiliary obstacle-crossing component in a preferred embodiment of the present utility model.

[0031] In the figure: 1, vehicle body; 11, limit slide rail; 2, balance adjustment component; 21, rear vehicle frame; 22, slider; 23, balance telescopic rod; 3, base; 4, walking drive; 5, auxiliary obstacle-crossing component; 51, adjustment telescopic rod; 52, support leg; 53, obstacle-crossing auxiliary wheel; 531, wheel foot; 54, sliding sleeve; 55, drive motor; 6, front obstacle-crossing component; 7, rear obstacle-crossing component. Detailed Embodiment

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0034] Refer to Figures 1-3An unmanned stair climbing vehicle for delivery with an auxiliary obstacle-crossing mechanism comprises a vehicle body 1, wherein a front obstacle-crossing component 6 for driving the front side of the vehicle body 1 to climb stairs is disposed at the front side of the vehicle body 1. A rear obstacle-crossing component 7 for driving the rear side of the vehicle body 1 to follow and climb stairs is disposed at the rear side of the vehicle body 1. The stair climbing operation of the unmanned stair climbing vehicle for delivery is achieved by the front obstacle-crossing component 6 and the rear obstacle-crossing component 7.

[0035] Auxiliary obstacle crossing components 5 are provided on both sides of the vehicle body 1 between the front obstacle crossing component 6 and the rear obstacle crossing component 7. The auxiliary obstacle crossing components 5 are used to assist the stair climbing vehicle when climbing stairs.

[0036] The obstacle-crossing auxiliary component 5 includes a support leg 52, and an adjustable telescopic rod 51 fixedly connected to the vehicle body 1 is provided on the top of the support leg 52, and the adjustable telescopic rod 51 is used to control the up and down movement of the support leg 52. The adjustable telescopic rod 51 uses an electric telescopic rod, wherein one end of the fixed rod of the electric telescopic rod is fixed to the vehicle body 1, and one end of the moving rod of the electric telescopic rod is connected to the support leg 52. Thus, the purpose of adjusting the telescopic rod 51 to control the up and down movement of the support leg 52 is achieved.

[0037] A pressure sensor is provided between the adjustable telescopic rod 51 and the supporting leg 52, and feedback data from the pressure sensor is used to determine whether the obstacle-crossing auxiliary wheel 53 is in contact with the step.

[0038] An obstacle-crossing auxiliary wheel 53 is disposed at one end of the bottom of the support leg 52 . A driving motor 55 is connected to one side of the obstacle-crossing auxiliary wheel 53 . The driving motor 55 is used to drive the obstacle-crossing auxiliary wheel 53 to rotate.

[0039] Reference Figure 4 The side cross-section of the obstacle-crossing auxiliary wheel 53 is in a windmill shape, which makes it easier for the obstacle-crossing auxiliary wheel 53 to contact the step and find a fulcrum.

[0040] The obstacle assisting wheel 53 has three wheel casters 531 evenly distributed on the outer wall.

[0041] Reference Figure 5 The vehicle body 1 is provided with limit rails 11 on both sides of the vehicle body 1 in the travel direction, and a sliding sleeve 54 is fixedly connected to the outer wall of the obstacle-crossing auxiliary wheel 53, and the sliding sleeve 54 is slidably connected to the limit rails 11. The sliding sleeve 54 slides on the outer side of the limit rails 11 to limit the moving track of the obstacle-crossing auxiliary wheel 53 and enhance the stability of the obstacle-crossing auxiliary wheel 53.

[0042] The rear side of the vehicle body 1 is provided with a base 3, and a balance adjustment component 2 is provided between the base 3 and the vehicle body 1. The balance adjustment component 2 is used to increase the height of the front end of the vehicle body 1 after the front obstacle crossing component 6 climbs the stairs, and to drive the rear side of the vehicle body 1 to increase in height through the balance adjustment component 2 to keep the vehicle body 1 parallel as a whole, thereby ensuring that the load in the vehicle body 1 does not slide due to gravity.

[0043] On both sides of the base 3, a traveling drive 4 is provided. The traveling drive 4 includes rollers and a motor, and is used as the overall moving drive of the stair-climbing vehicle.

[0044] The balance adjustment assembly 2 includes a rear frame 21 fixedly connected to the vehicle body 1. On both sides of the rear frame 21, sliders 22 are fixedly connected. At both ends of the top of the base 3, guiding chutes are provided. The sliders 22 are slidably connected to the guiding chutes. At the bottom of the rear frame 21, a balance telescopic rod 23 is rotatably connected. The free end of the balance telescopic rod 23 is rotatably connected to the base 3. When the balance telescopic rod 23 works, it drives the sliders 22 to move in the guiding chutes, thereby adjusting the height of the rear frame 21.

[0045] The front obstacle-crossing assembly 6 includes two swing arms. The tops of the two swing arms are connected by a crank. Two swing arms of the same specification are connected to both ends of the crank. By the rotation of the crank, the two swing arms move alternately up and down in a forward striding manner to achieve the climbing purpose. On the outer walls of the two swing arms, limiting members are slidably connected, and the two limiting members are coaxial.

[0046] The rear obstacle-crossing assembly 7 includes a crowbar and a limiting slideway. One end of the crowbar is rotatably connected with a limiting slider, and the limiting slider is slidably connected to the limiting slideway. On the outer wall of the crowbar, a crank connected to the driving motor is rotatably connected. When the driving motor works, it drives the crank to rotate. By the crank, one end of the crowbar is driven to turn downward. One end of the crowbar contacts the step as a support point, and the base 3 is lifted and moved forward.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front part", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism, comprising a vehicle body (1), a front obstacle-crossing assembly (6) is arranged on the front side of the vehicle body (1), and a rear obstacle-crossing assembly (7) is arranged on the rear side of the vehicle body (1), and it is characterized in that: Auxiliary obstacle-crossing components (5) are arranged on both sides of the vehicle body (1) between the front obstacle-crossing component (6) and the rear obstacle-crossing component (7); The auxiliary obstacle-crossing component (5) includes a support leg (52), a bottom of the support leg (52) is provided with an obstacle-crossing auxiliary wheel (53), one side of the obstacle-crossing auxiliary wheel (53) is connected with a driving motor (55), and a top of the support leg (52) is provided with an adjusting telescopic rod (51) fixedly connected with the vehicle body (1).

2. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, characterized in that: Limit slide rails (11) are arranged on both the left and right sides in the traveling direction of the vehicle body (1), a sliding sleeve (54) is arranged on an outer wall of the obstacle-crossing auxiliary wheel (53), and the sliding sleeve (54) is slidably connected with the limit slide rail (11).

3. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, characterized in that: A pressure sensor is arranged on the adjusting telescopic rod (51).

4. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, characterized in that: A side cross-section of the obstacle-crossing auxiliary wheel (53) is windmill-shaped.

5. The unmanned delivery climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 4, characterized in that: Three wheel feet (531) are evenly distributed on an outer wall of the obstacle-crossing auxiliary wheel (53).

6. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, characterized in that: A base (3) is arranged at a rear side of the vehicle body (1), and a balance adjusting component (2) is arranged between the base (3) and the vehicle body (1).

7. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 6, characterized in that: Traveling drives (4) are arranged on both sides of the base (3).

8. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 7, characterized in that: The balance adjusting component (2) includes a rear vehicle frame (21) fixedly connected with the vehicle body (1), sliders (22) are fixedly connected to both sides of the rear vehicle frame (21), the sliders (22) are slidably connected with the base (3), a bottom of the rear vehicle frame (21) is rotatably connected with a balance telescopic rod (23), and a free end of the balance telescopic rod (23) is rotatably connected with the base (3).

9. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, characterized in that: The front obstacle-crossing component (6) includes two swing arms, tops of the two swing arms are connected by a crank, limiting members are slidably connected to outer walls of the two swing arms, and the two limiting members are coaxial.

10. The unmanned delivery stair-climbing vehicle with an auxiliary obstacle-crossing mechanism according to claim 1, wherein: The rear obstacle-crossing component (7) includes a pry bar and a limit slideway, one end of the pry bar is rotatably connected with a limit slider, the limit slider is slidably connected with the limit slideway, and a crank connected with a driving motor is rotatably connected to an outer wall of the pry bar.

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