Stair climbing cargo carrying trailer facilitating reversing

Abstract

The utility model discloses a stair climbing cargo carrying trailer facilitating reversing, which comprises a trailer and a crawler walking mechanism, and the crawler walking mechanism is arranged at the lower end of the trailer. A lifting auxiliary moving mechanism is further arranged at the lower end of the trailer and comprises lifting universal wheels, a universal wheel lifting mechanism and a lifting driving mechanism, lifting of the crawler walking mechanism can be achieved, and the trailer can turn in a staircase conveniently. An upper ridge auxiliary track and a track angle adjusting telescopic rod are arranged on the lower side of the front end of the trailer, the track angle can be adjusted according to the step height, and the trailer smoothly enters the next step. Lifting is manually controlled, the load of the trailer is reduced, and the stair climbing device has good adaptability and flexibility and is suitable for stair climbing cargo carrying operation in a complex environment.

Description

Technical Field

[0001] This utility model relates to the field of freight vehicle technology, and in particular to a stair-climbing cargo trailer that facilitates reversing. Background Technology

[0002] In the current field of freight vehicle technology, stair-climbing cargo trailers typically employ tracked walking mechanisms to climb stairs. However, these trailers have certain limitations when turning on staircases. If the tracked walking mechanism consists of two independently operating tracks, while turning is possible, it requires dual motors, dual drives, and even larger batteries, increasing the overall weight of the trailer and affecting its flexibility and practicality. Furthermore, existing trailers have poor adaptability to steps of varying heights, making it difficult to smoothly enter the next step and limiting their application range in complex environments. Summary of the Invention

[0003] The purpose of this invention is to provide a stair-climbing cargo trailer that facilitates reversing.

[0004] To achieve the above objectives, this utility model is implemented according to the following technical solution:

[0005] This utility model includes a trailer and a tracked traveling mechanism. The tracked traveling mechanism is disposed at the lower end of the trailer. The lower end of the trailer is also provided with a lifting auxiliary moving mechanism, which is disposed in the middle or on both sides of the tracked traveling mechanism.

[0006] Furthermore, the lifting auxiliary moving mechanism comprises lifting casters, a caster lifting mechanism, and a lifting drive mechanism. There are multiple lifting casters, each of which is connected to the lower end of the trailer via the caster lifting mechanism. The drive end of the lifting drive mechanism is connected to the drive end of the caster lifting mechanism.

[0007] Specifically, the omnidirectional wheel lifting mechanism includes a lifting device mounting frame, an omnidirectional wheel lifting rod, a lifting rod pressure plate, and an omnidirectional wheel return spring. The lifting device mounting frame is fixedly connected to the lower side frames of the trailer. The upper end face of the lifting device mounting frame has a gap with the lower end face of the trailer. The lower end of the omnidirectional wheel lifting rod is connected to the upper end of the lifting omnidirectional wheel. The upper end of the omnidirectional wheel lifting rod passes through the lifting device mounting frame and can slide. Each lifting omnidirectional wheel is connected to the lower end face of the lifting rod pressure plate after passing through the lifting device mounting frame via an omnidirectional wheel lifting rod. Each omnidirectional wheel lifting rod is fitted with an omnidirectional wheel return spring, which is located between the upper end of the lifting device mounting frame and the lower end of the lifting rod pressure plate. The upper end of the lifting rod pressure plate is connected to the drive end of the lifting drive mechanism.

[0008] The lifting drive mechanism includes a drive shaft mounting lug, a lifting operation drive shaft, a lifting drive protrusion, and a lifting drive operation handle. The drive shaft mounting lug is fixedly disposed on the lower end face of the trailer. The lifting operation drive shaft passes through the drive shaft mounting lug and is rotatably connected to the drive shaft. The lower end of the lifting drive operation handle is perpendicularly fixedly connected to one end of the lifting operation drive shaft. The lifting drive protrusion is fixedly connected to the middle section of the lifting operation drive shaft. One side of the lifting drive protrusion protrudes, and both the protruding edge and one side of the lifting drive protrusion can contact the upper end face of the lifting rod pressure plate.

[0009] As an improvement, an arc-shaped portion of the driving protrusion is provided between the protruding edge and the side edge of the lifting driving protrusion.

[0010] The trailer is provided with an auxiliary track for climbing sills and a track angle adjustment telescopic rod on the lower front side. One end of the auxiliary track for climbing sills is coaxially rotatably connected to the lower end of the trailer or the front end of the track walking mechanism. The middle section of the auxiliary track for climbing sills is connected to the lower end of the trailer through the track angle adjustment telescopic rod.

[0011] The beneficial effects of this utility model are:

[0012] This utility model is a stair-climbing cargo trailer that facilitates reversing. Compared with existing technologies, this utility model effectively solves the shortcomings of existing stair-climbing cargo trailers in turning and adapting to different step heights by setting up a lifting auxiliary movement mechanism. Specifically, the lifting auxiliary movement mechanism includes lifting casters, a caster lifting mechanism, and a lifting drive mechanism. By operating the lifting drive handle, the lifting casters can be raised, allowing the tracked walking mechanism to rise a certain distance when turning, thus facilitating the trailer's turning. Simultaneously, the step-adjusting auxiliary tracks and track angle adjustment telescopic rods located on the lower front side of the trailer can adjust the track angle according to the step height, smoothly entering the next step and improving the trailer's adaptability and flexibility. Furthermore, this utility model adopts a manual lifting control method, which, compared to electric or hydraulic lifting, effectively reduces the trailer's load, lowers costs, and has better economic benefits and practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the rear structure of this utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0015] Figure 3 This is a schematic diagram of the lower structure of this utility model;

[0016] Figure 4This is a cross-sectional structural diagram of the present invention;

[0017] Figure 5 This is a schematic diagram of the upper structure of this utility model.

[0018] In the diagram: 1. Trailer; 2. Tracked walking mechanism; 3. Lifting device mounting frame; 4. Lifting caster; 5. Caster lifting rod; 6. Lifting rod pressure plate; 7. Caster return spring; 8. Drive shaft mounting lug; 9. Lifting operation drive shaft; 10. Lifting drive protrusion; 11. Lifting drive operation handle; 12. Drive protrusion arc-shaped part; 13. Upper curb auxiliary track; 14. Track angle adjustment telescopic rod. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0020] like Figure 1-5 As shown: This utility model includes a trailer 1 and a tracked walking mechanism 2. The tracked walking mechanism 2 is disposed at the lower end of the trailer 1. The lower end of the trailer 1 is also provided with a lifting auxiliary moving mechanism, which is disposed in the middle or on both sides of the tracked walking mechanism 2.

[0021] Furthermore, the lifting auxiliary moving mechanism comprises lifting casters 4, a caster lifting mechanism, and a lifting drive mechanism. There are multiple lifting casters 4, and each lifting caster 4 is connected to the lower end of the trailer 1 through the caster lifting mechanism. The drive end of the lifting drive mechanism is connected to the drive end of the caster lifting mechanism.

[0022] Specifically, the universal wheel lifting mechanism includes a lifting device mounting frame 3, a universal wheel lifting rod 5, a lifting rod pressure plate 6, and a universal wheel return spring 7. The lifting device mounting frame 3 is fixedly connected to the lower two sides of the trailer frame 1. The upper end face of the lifting device mounting frame 3 has a gap with the lower end face of the trailer 1. The lower end of the universal wheel lifting rod 5 is connected to the upper end of the lifting universal wheel 4. The upper end of the universal wheel lifting rod 5 passes through the lifting device mounting frame 3 and can slide. Each lifting universal wheel 4 is connected to the lower end face of the lifting rod pressure plate 6 after passing through the lifting device mounting frame 3 via a universal wheel lifting rod 5. Each universal wheel lifting rod 5 is fitted with a universal wheel return spring 7. The universal wheel return spring 7 is located between the upper end of the lifting device mounting frame 3 and the lower end of the lifting rod pressure plate 6. The upper end of the lifting rod pressure plate 6 is connected to the drive end of the lifting drive mechanism.

[0023] The lifting drive mechanism includes a drive shaft mounting lug 8, a lifting operation drive shaft 9, a lifting drive protrusion 10, and a lifting drive operation handle 11. The drive shaft mounting lug 8 is fixedly disposed on the lower end face of the trailer 1. The lifting operation drive shaft 9 passes through the drive shaft mounting lug 8 and is rotatably connected to the drive shaft mounting lug 8. The lower end of the lifting drive operation handle 11 is vertically fixedly connected to one end of the lifting operation drive shaft 9. The lifting drive protrusion 10 is fixedly connected to the middle section of the lifting operation drive shaft 9. One side of the lifting drive protrusion 10 protrudes, and both the protruding side and one side of the lifting drive protrusion 10 can contact the upper end face of the lifting rod pressure plate 6.

[0024] As an improvement, an arc-shaped portion 12 of the driving protrusion is provided between the protruding edge and the side edge of the lifting driving protrusion 10.

[0025] The trailer 1 is provided with an upper step auxiliary track 13 and a track angle adjustment telescopic rod 14 on the lower front side. One end of the upper step auxiliary track 13 is coaxially rotatably connected to the lower end of the trailer 1 or the front end of the track walking mechanism 2. The middle section of the upper step auxiliary track 13 is connected to the lower end of the trailer 1 through the track angle adjustment telescopic rod 14.

[0026] The working principle of this utility model is as follows:

[0027] In use, goods are placed on the trailer 1 and secured with ropes, etc. The tracked walking mechanism 2 is a prior art tracked device, equipped with a battery (not shown in the diagram), which can be placed at any suitable position on the trailer 1. The tracked walking mechanism 2 is prior art, and there are many types and forms of tracked walking mechanisms 2. The details of the tracked walking mechanism 2 are not shown in this utility model. The tracked walking mechanism 2 is operated by power and moves on stairs. After going up a step, usually at the turning platform of the stairwell, a turn is required. If the tracked walking mechanism 2 has independently running tracks on both sides, it can turn, but the tracked walking mechanism 2 needs to be equipped with dual motors, dual drives, or even larger batteries, which would make the entire trailer heavier. Therefore, by operating the lifting drive operating handle 11, the lifting operation drive shaft 9 and the lifting drive protrusion 10 are rotated. The arc-shaped part 12 of the drive protrusion is set to ensure a smooth transition when rotating the lifting drive protrusion 10, so that the protruding side of the lifting drive protrusion 10 presses the lifting rod. The plate 6 is pressed down, and the universal wheel lifting rod 5 further presses down the lifting universal wheel 4, exceeding the bottom surface of the tracked walking mechanism 2, so that the tracked walking mechanism 2 rises a certain distance and leaves the ground. Then, the hand-held trailer 1 can turn. After turning, the lifting drive operating handle 11 is operated in the opposite direction. The lifting rod pressure plate 6 rises under the force of the universal wheel return spring 7, the lifting universal wheel 4 leaves the ground, and the tracked walking mechanism 2 lands, so as to climb the next stair. In order to adapt to the start and steps of different heights, an upper step auxiliary track 13 is set to smoothly enter the next step. The angle of the upper step auxiliary track 13 is changed by adjusting the length of the track angle adjustment telescopic rod 14. The track angle adjustment telescopic rod 14 can be a stage buckle telescopic rod or a threaded telescopic rod, which can be selected according to actual needs. If it is electric or hydraulic lifting, it will definitely need to carry related hydraulic system, electric system, etc., thereby increasing the load of the trailer 1. Manual control is used to achieve lifting while minimizing the load.

[0028] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stair climbing load carrier trailer with facilitated reversing, comprising a trailer (1) and a crawler track (2) arranged at the lower end of the trailer (1), characterized in that: The lower end of the trailer (1) is also provided with a lifting auxiliary moving mechanism, which is arranged at the middle or both sides of the crawler walking mechanism (2).

2. The stair climbing cargo carrier with commutation facilitation of claim 1, wherein: The lifting auxiliary moving mechanism comprises lifting universal wheels (4), a universal wheel lifting mechanism and a lifting driving mechanism, the lifting universal wheels (4) are multiple, each lifting universal wheel (4) is connected with the lower end of the trailer (1) through the universal wheel lifting mechanism, and the driving end of the lifting driving mechanism is connected with the driving end of the universal wheel lifting mechanism.

3. The stair climbing cargo carrier with commutation facilitation of claim 2, wherein: The universal wheel lifting mechanism comprises a lifting device mounting rack (3), a universal wheel lifting rod (5), a lifting rod pressing plate (6) and a universal wheel reset spring (7), the lifting device mounting rack (3) is fixedly connected with the lower end of the trailer (1) on both sides of the frame, the upper end surface of the lifting device mounting rack (3) has a gap with the lower end surface of the trailer (1), the lower end of the universal wheel lifting rod (5) is connected with the upper end of the lifting universal wheel (4), the upper end of the universal wheel lifting rod (5) penetrates through the lifting device mounting rack (3) and can slide, each lifting universal wheel (4) is connected with the lower end surface of the lifting rod pressing plate (6) through one universal wheel lifting rod (5) penetrating through the lifting device mounting rack (3), one universal wheel reset spring (7) is sleeved on each universal wheel lifting rod (5), the universal wheel reset spring (7) is located between the upper end of the lifting device mounting rack (3) and the lower end of the lifting rod pressing plate (6), and the upper end of the lifting rod pressing plate (6) is connected with the driving end of the lifting driving mechanism.

4. The stair climbing cargo carrier with commutation facilitation of claim 3, wherein: The lifting driving mechanism comprises a driving shaft mounting lug (8), a lifting operation driving shaft (9), a lifting driving protrusion (10) and a lifting driving operation handle (11), the driving shaft mounting lug (8) is fixedly arranged on the lower end surface of the trailer (1), the lifting operation driving shaft (9) penetrates through the driving shaft mounting lug (8), and the driving shaft mounting lug (8) is rotationally connected with the lifting operation driving shaft (9), the lower end of the lifting driving operation handle (11) is fixedly connected with one end of the lifting operation driving shaft (9) perpendicularly, the lifting driving protrusion (10) is fixedly connected with the middle section of the lifting operation driving shaft (9), one side of the lifting driving protrusion (10) is protruded, and the protruded edge of the lifting driving protrusion (10) can be in contact with the upper end surface of the lifting rod pressing plate (6).

5. The stair climbing cargo carrier with commutation facilitation of claim 4, wherein: The protruded edge and the side edge of the lifting driving protrusion (10) are provided with a driving protrusion arc-shaped part (12).

6. The stair climbing cargo carrier with commutation facilitation of claim 1, wherein: The lower side of the front end of the trailer (1) is provided with an upper ridge auxiliary crawler (13) and a crawler angle adjusting telescopic rod (14), one end of the upper ridge auxiliary crawler (13) is rotationally connected with the lower end of the trailer (1) or the front end of the crawler walking mechanism (2), and the middle section of the upper ridge auxiliary crawler (13) is connected with the lower end of the trailer (1) through the crawler angle adjusting telescopic rod (14).

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