A composite crawler delivery vehicle

Abstract

The present invention discloses a composite crawler delivery vehicle, including a vehicle body and a shelf, wherein a driving mechanism is arranged on the vehicle body, and the driving mechanism is composed of a composite crawler, and the composite crawler is composed of three pairs of six crawlers, and the three pairs of six crawlers are respectively connected to three vehicle bodies, wherein the first vehicle body and the second vehicle body are rigidly connected, the shelf is connected to the first vehicle body and the second vehicle body, the second vehicle body and the third vehicle body are hinged, and a limit baffle is arranged above the hinge point of the second vehicle body and the third vehicle body, one end of the limit baffle is connected to the second vehicle body, and the other end extends to the top of the third vehicle body, and the limit baffle is flush with the second vehicle body. The composite crawler solves the problem of interference between the drive and the crawler, and can also increase the ground contact area and length of the vehicle body crawler, improve the ability of the crawler to climb stairs, and at the same time increase the actual length of the vehicle body, ensuring that the center of gravity is within a controllable range when the vehicle body is tilted.

Description

Technical Field

[0001] The invention relates to a composite crawler track delivery vehicle, and more specifically, to a delivery vehicle adaptable to the road and staircase environment of urban residential areas. Background Art

[0002] Delivery trucks are traveling in the community, and the roads are bumpy, making it easy for them to overturn and drop cargo. At the same time, ordinary delivery trucks cannot go upstairs due to the curbs, steps and stairs. Summary of the invention

[0003] In order to solve the above-mentioned technical problems, the present invention provides a delivery vehicle that is adaptable to the roads and staircase environments of urban residential areas.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A composite crawler delivery vehicle, comprising a vehicle body and a shelf;

[0006] The vehicle body is provided with a driving mechanism, which is composed of a composite crawler. The composite crawler consists of three pairs of six crawlers, which are respectively connected to three vehicle bodies, wherein the first vehicle body and the second vehicle body are rigidly connected, the shelf is connected to the first vehicle body and the second vehicle body, the second vehicle body and the third vehicle body are hinged, and a limit baffle is provided above the hinge point of the second vehicle body and the third vehicle body, one end of the limit baffle is connected to the second vehicle body, and the other end extends to above the third vehicle body, and the limit baffle is flush with the second vehicle body.

[0007] Further technology of the present invention:

[0008] Preferably, the first vehicle body and the second vehicle body are rigidly connected at an angle of 45 degrees.

[0009] Preferably, the vehicle body includes a transverse plate and a vertical plate, the vertical plates are connected on both sides of the transverse plates, the vertical plates are provided with axles, the axles are provided with track wheels, and the track wheels are provided with tracks, the transverse plates of the first and second vehicle bodies are an integral structure, wherein a first pair of two tracks are connected to the outer side of the vertical plate of the first vehicle body, a second pair of two tracks are connected to the inner side of the vertical plate of the second vehicle body, and a third pair of two tracks are connected to the outer side of the vertical plate of the third vehicle body.

[0010] Preferably, a plurality of notches are provided on the transverse plate.

[0011] Preferably, three pairs of six crawlers are controlled by six motors respectively, and the motor drives one of the wheel axles, and drives the other wheel axles to rotate through the crawlers.

[0012] Preferably, the shelf comprises an outer ring of a balance wheel fixedly connected to the vehicle body, an inner wall of the outer ring of the balance wheel is provided with an annular track, a plurality of bearings are provided in the annular track, an inner ring of the balance wheel is provided in the outer ring of the balance wheel, and the outer ring of the balance wheel is supported on the bearings.

[0013] Preferably, a connecting rod is provided between the balance wheel outer rings on both sides for fixed connection.

[0014] Preferably, a cargo hold is built into the inner ring of the balance wheel, and the cargo hold is a semi-cylindrical structure. Both sides of the cargo hold are fixedly connected to the inner ring of the balance wheel, and cameras are provided at the front and rear of the cargo hold.

[0015] Preferably, the cargo hold is provided with mounting slots at the front and rear, a rotating rod is provided in the mounting slot, and the top of the camera is rotatably connected to the rotating rod.

[0016] Preferably, a battery pack and a power control unit are provided at the bottom of the vehicle body, the battery pack provides power for the motor, and the power control unit controls the battery pack switch.

[0017] Beneficial effects of the present invention:

[0018] The composite crawler solves the problem of drive and crawler interference, and can also increase the ground contact area and length of the vehicle crawler, improve the ability of the crawler to climb stairs, and at the same time increase the actual length of the vehicle body, ensuring that the center of gravity is within a controllable range when the vehicle body is tilted. At the same time, the inner ring of the balance wheel can slide freely along the circular track to maintain its own balance, and the cargo on it is not easy to tip over and fall due to the tilt of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic top view of the structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the warehouse structure;

[0023] Figure 4 It is a schematic diagram of the explosion of the structure of the present invention;

[0024] Figure 5 The delivery vehicle of the present invention is in the state of climbing stairs. Figure 1 ;

[0025] Figure 6 The delivery vehicle of the present invention is in the state of climbing stairs. Figure 2 ;

[0026] Markings in the attached figure: 1. Shelf; 2. Composite crawler; 11. Outer ring of balance wheel; 12. Bearing; 13. Inner ring of balance wheel; 14. Cargo warehouse; 15. Camera; 16. Connecting rod; 17. Mounting slot; 18. Rotating rod; 19. Motor; 3. First vehicle body; 4. Second vehicle body; 5. Third vehicle body; 6. Horizontal plate; 7. Vertical plate; 8. Hinge point; 9. Limit baffle; 10. Slot; 21. Axle; 22. Track wheel; 23. Crawler track. DETAILED DESCRIPTION

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] Example 1: Figure 1 , 2 and 4, the present invention provides a composite crawler delivery vehicle, comprising a vehicle body and a shelf 1;

[0029] The vehicle body is provided with a driving mechanism, which is composed of a composite crawler 2. The shelf 1 includes a balance wheel outer ring 11 fixedly connected to the vehicle body. The inner wall of the balance wheel outer ring 11 is provided with a circular track. A plurality of bearings 12 are provided in the circular track. A balance wheel inner ring 13 is provided in the balance wheel outer ring 11. The balance wheel outer ring 11 is supported on the bearings 12.

[0030] When the vehicle tilts, the inner ring 13 of the balance wheel can slide freely along the circular track to maintain its own balance, and the goods on it are not easy to fall down due to the tilt of the vehicle body.

[0031] If the vehicle body is too short, the center of gravity of the vehicle is likely to fall outside the line connecting the front and rear fulcrums of the vehicle when climbing stairs, causing the vehicle to overturn. In this regard, the composite crawler 2 is composed of three pairs of six crawlers.

[0032] The three-section composite track can improve the vehicle's climbing ability, but the shared drive wheel of the front and rear tracks requires a lot of torque, and the structure is also complex. There is also the problem of mutual interference between the tracks, which is difficult to achieve in engineering. Increasing the power blindly will greatly increase the weight of the battery and motor, which may cause the vehicle itself to be too heavy and the load to be too small, making it impractical. Second, the vehicle body is too short, and when climbing stairs, the center of gravity of the vehicle is very likely to fall outside the line connecting the front and rear fulcrums of the vehicle, causing the vehicle to overturn.

[0033] In this regard, the vehicle body includes a transverse plate 6 and a vertical plate 7, the vertical plates are connected on both sides of the transverse plates, the vertical plates are provided with a wheel axle 21, the wheel axle is provided with a track wheel 22, and the track wheel is provided with a track 23, the transverse plate 6 of the first vehicle body 3 and the second vehicle body 4 is an integrated structure, wherein the first pair of two tracks are connected to the outer side of the vertical plate of the first vehicle body, the second pair of two tracks are connected to the inner side of the vertical plate of the second vehicle body, and the third pair of two tracks are connected to the outer side of the vertical plate of the third vehicle body.

[0034] The center of gravity of the shelf 1 of the present invention is arranged directly above the second vehicle body.

[0035] Solving the problem of drive and track interference can also increase the ground contact area and length of the vehicle track, improve the ability of the track to climb stairs, and at the same time increase the actual length of the vehicle body to ensure that the center of gravity is within a controllable range when the vehicle body is tilted.

[0036] The three pairs of six crawlers are controlled by six motors 19 respectively, and the motor drives one of the wheel axles, and drives the other wheel axles to rotate through the crawlers.

[0037] The six tracks can be controlled individually, with one side of the track being slow and the other side being fast, so that the vehicle can be turned.

[0038] like Figure 5-6 The vehicle has a six-wheel drive and three-stage crawler design, and also has an articulated drive section. Under the action of its own gravity, the articulated section of the vehicle body will bend backward under the pressure when going up the stairs, so that the body load point has a smaller climbing angle. When going down the stairs, it will sag under the action of gravity, reducing the impact of going down the stairs. The self-balancing pendulum-wheel cargo hold design ensures that the goods will not overturn during transportation. The first body 3 and the second body 4 are rigidly connected at a certain angle, and the second body 4 and the third body 5 are connected by a hinge. Since the first body has a 45-degree elevation angle, it can be directly placed on the steps. The rotation of the crawler generates friction to pull the vehicle upward, and cooperates with the pushing force of the main crawler of the body to achieve the vehicle climbing the steps. When the body climbs up the steps, it is at an inclined angle, and the third body at the rear of the body can be attached to the stairs below to provide support for the balance of the body. At the same time, the rotation of the crawler generates friction, and cooperates with the crawler of the second body to push the body upward to continuously climb the stairs.

[0039] At the same time, the crawler track of the present invention is in an inverted trapezoidal shape, parallel up and down, with inclined surfaces inclined inward at 45° on both sides. The first vehicle body has a 45-degree elevation angle, which means that when it is located on flat ground, the angle between the lower surface of the crawler track of the first vehicle body and the ground is also the angle with the second vehicle body. The function of the inclined surfaces on both sides is that when the first vehicle body encounters a step, on the basis of the 45° angle between the lower surface and the ground, the 45° inclined surfaces on both sides are combined to form a 90-degree vertical state, which fits the vertical step surface to increase the climbing force. When climbing to the horizontal step, the lower surface of the crawler track of the first vehicle body contacts the horizontal step and the vertical step at the corner, and the inclined surface of the first vehicle body loses its effect. At this time, the inclined surface of the second vehicle body just contacts the step below, which is also a surface contact, which increases the thrust and helps to climb the steps.

[0040] The vehicle body is a thin-shell frame structure, specifically a transverse plate, with vertical plates vertically connected to both sides of the transverse plate, and a plurality of notches are arranged on the transverse plate to reduce weight.

[0041] A limit baffle 9 is provided above the hinge point 8 between the second body 4 and the third body 5 . One end of the limit baffle 9 is connected to the second body 4 , and the other end extends above the third body 5 . The limit baffle 9 is flush with the second body 4 .

[0042] In the case of continuous climbing of stairs, the first vehicle body 3 and the second vehicle body 4 are in an inclined state, and a limit baffle 9 is added. Under the action of the limit baffle 9, the third vehicle body 5 will not flip over, and the state of the first vehicle body 3 and the second vehicle body 4 is maintained, and the vehicle body is pushed upward to continuously climb the stairs.

[0043] Embodiment 2, based on Embodiment 1, the present invention can also realize the driving of unmanned vehicles. Specifically, there are multiple schemes, including: image recognition autonomous navigation, satellite positioning autonomous navigation, and video transmission remote control driving. Among them, image recognition autonomous navigation involves visual recognition, motion analysis, path algorithm, data fusion, control algorithm, signal transmission and other technologies and equipment, and the system design is difficult and costly. Satellite positioning autonomous navigation involves starting point position calculation, path calculation and selection, which requires special receiving equipment, requires a lot of background support resources, and is costly. We choose video transmission remote control driving, and we can purchase existing finished products that meet the functional requirements. Ordinary people can operate it with simple training, and it is easy and cheap to repair and replace. It only needs to solve the transmission and application of the operating signal and the vehicle body control device.

[0044] Specifically in the present invention, Figure 3-4The inner wall of the outer ring 11 of the balance wheel is provided with an annular track, a plurality of bearings 12 are provided in the annular track, an inner ring 13 of the balance wheel is provided in the outer ring 11 of the balance wheel, the outer ring 11 of the balance wheel is supported on the bearings 12, and connecting rods 16 are provided between the outer rings of the balance wheel on both sides for fixed connection. A cargo hold 14 is built into the inner ring of the balance wheel, and the cargo hold is a semi-cylindrical structure. Both sides of the cargo hold are fixedly connected to the inner ring of the balance wheel, and cameras 15 are provided at the front and rear of the cargo hold. Installation notches 17 are provided at the front and rear of the cargo hold, and a rotating rod 18 is provided in the installation notch, and the top of the camera 15 is rotatably connected to the rotating rod. A battery pack and a power control unit are provided at the bottom of the vehicle body, and the battery pack provides power for the motor, and the power control unit controls the switch of the battery pack.

[0045] The video information is transmitted remotely through the camera, and the existing remote control vehicle system is used. For example, one or more remote operation instructions are sent through the remote control device; the remote operation instructions sent by the remote control device are received through the vehicle communication unit; the vehicle communication unit sends the remote operation instructions to the power control unit; the power control unit controls the vehicle to perform the corresponding operation according to the remote operation instructions. At the same time, the remote control device is equipped with a display screen, and the video information is transmitted remotely to the display screen through the camera, so that the vehicle can be remotely controlled.

[0046] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite crawler delivery vehicle, characterized in that: Including the vehicle body and rack; The vehicle body is provided with a driving mechanism, which is composed of a composite crawler, and the composite crawler is composed of three pairs of six crawlers, which are respectively connected to the three vehicle bodies, wherein the first vehicle body and the second vehicle body are rigidly connected, the shelf is connected to the first vehicle body and the second vehicle body, the second vehicle body and the third vehicle body are hinged, and a limit baffle is provided above the hinge point of the second vehicle body and the third vehicle body, one end of the limit baffle is connected to the second vehicle body, and the other end extends to the top of the third vehicle body, and the limit baffle is flush with the second vehicle body; The first vehicle body and the second vehicle body are rigidly connected at an angle of 45 degrees; The shelf includes a balance wheel outer ring fixedly connected to the vehicle body, the inner wall of the balance wheel outer ring is provided with an annular track, a plurality of bearings are provided in the annular track, a balance wheel inner ring is provided in the balance wheel outer ring, and the balance wheel outer ring is supported on the bearing; A connecting rod is provided between the outer rings of the balance wheels on both sides to fix the connection; The inner ring of the balance wheel has a built-in cargo hold, which is a semi-cylindrical structure. Both sides of the cargo hold are fixedly connected to the inner ring of the balance wheel, and cameras are provided at the front and rear of the cargo hold; The cargo hold is provided with mounting notches at the front and rear, a rotating rod is provided in the mounting notches, and the top of the camera is rotatably connected to the rotating rod.

2. A composite crawler delivery vehicle according to claim 1, characterized in that: The vehicle body includes a transverse plate and a vertical plate, wherein the vertical plates are connected on both sides of the transverse plates, the vertical plates are provided with a wheel axle, the wheel axle is provided with a track wheel, and the track wheel is provided with a track, the transverse plates of the first vehicle body and the second vehicle body are an integral structure, wherein a first pair of two tracks are connected to the outer side of the vertical plate of the first vehicle body, a second pair of two tracks are connected to the inner side of the vertical plate of the second vehicle body, and a third pair of two tracks are connected to the outer side of the vertical plate of the third vehicle body.

3. A composite crawler delivery vehicle according to claim 2, characterized in that: The transverse plate is provided with a plurality of notches.

4. A composite crawler delivery vehicle according to claim 1, characterized in that: Three pairs of six tracks are controlled by six motors respectively. The motor drives one of the wheel axles, which in turn drives the other wheel axles to rotate through the tracks.

5. A composite crawler delivery vehicle according to claim 1, characterized in that: A battery pack and a power control unit are provided at the bottom of the vehicle body. The battery pack provides power to the motor, and the power control unit controls the battery pack switch.

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