Traction type four-wheel sand trailer

Abstract

A traction type four-wheel sand trailer belongs to the technical field of transportation tools and comprises a front wheel set connected with a front beam support and a rear wheel set connected with a rear beam support, the front beam support and the rear beam support are connected through an adjustable frame, and the overall appearance size is relatively small after the adjustable frame structure is contracted. The trailer can be placed in the tail box of the pickup truck to be transported, so that the trailer does not need to be transferred to a use site by a large vehicle when the trailer is used in a field site, and meanwhile, the trailer is lighter in overall weight, so that the trailer is more convenient to load and unload. When the trailer is used for moving and transporting a large unmanned aerial vehicle in a short distance, compared with manual lifting resistance, more time and manpower are saved, the operation method is simple, and the safety is higher; compared with a vehicle for transporting the unmanned aerial vehicle, the trailer is low in loading height, facilitates loading and unloading of the unmanned aerial vehicle, adopts sand tires, is small in overall dead weight, and is high in applicability and good in passing ability when used on non-paved road surfaces such as desert and gobi.

Description

Technical Field

[0001] The utility model belongs to the technical field of transportation tools, and particularly relates to a traction-type four-wheel sand trailer. Background Art

[0002] Sand trailers are designed to solve the problem of short-distance transportation of large drones in outdoor locations such as deserts and Gobi. Currently, manual lifting and vehicle transportation are commonly used to transport large drones over unpaved roads such as deserts and Gobi. Manual lifting is time-consuming and labor-intensive, inefficient, and poses certain safety risks. When transporting drones by vehicle, the hoisting process is relatively time-consuming, and vehicle passability is poor in poor road conditions. Currently, manual lifting and vehicle transportation are commonly used to transport large drones over short distances on unpaved roads such as deserts and Gobi. Manual lifting is time-consuming and labor-intensive, inefficient, and poses certain safety risks. When transporting drones by vehicle, the hoisting process is relatively time-consuming, and vehicle passability is poor in poor road conditions. Summary of the Invention

[0003] In view of the above shortcomings, the purpose of this utility model is to provide a traction-type four-wheel sand trailer to solve the problem of short-distance mobile transportation of large UAVs in deserts, Gobi and other outdoor venues.

[0004] The technical solution adopted by the utility model is: a towing four-wheel sand trailer, the technical key points of which are: it includes a front wheel group, a rear wheel group and an adjustable frame, the front wheel group is connected to the front beam support, the rear wheel group is connected to the rear beam support, the front beam support and the rear beam support are connected through an adjustable frame for adjusting the length of the trailer, and the adjustable frame is fixed by a locking slide after the length is adjusted; a front strap is connected to the front beam support, and a rear strap is connected to the rear beam support, and the front strap and the rear strap are used to fix the head and tail of the drone that needs to be transferred and transported.

[0005] Furthermore, the edge of the locking slide is overlapped on the side wall of the adjustable frame, and the edge is provided with a locking hole, which is used in conjunction with the positioning holes set at different positions on the adjustable frame, and the length of the adjustable frame is fixed by using a positioning pin passing through the locking hole and the positioning hole.

[0006] Furthermore, the front strap and the rear strap have the same structure, and are respectively composed of a support base and an active clamp a and an active clamp b hinged to the support base at both ends of the support base. The end of the active clamp b is connected to a quick clamp, and the active clamp a is detachably connected to the active clamp b using the quick clamp.

[0007] Furthermore, a positioning block is installed on the surface of the support base. The positioning block is provided with a protrusion for connecting with the bayonet at the bottom of the drone. The protrusion limits the drone in the horizontal direction.

[0008] Furthermore, the front beam support is connected to the pulling rod and the steering link respectively through the steering assembly.

[0009] The beneficial effects of the present invention are as follows: the traction-type four-wheeled sand trailer of the present invention adopts an adjustable frame chassis structure, including a front wheel group connected to the front beam support, a rear wheel group connected to the rear beam support, the front beam support and the rear beam support are connected by an adjustable frame, and the adjustable frame structure has a relatively small overall size after being retracted, so the trailer can be placed inside the tail box of a pickup truck for transportation, so that when the trailer is used in a field, there is no need to use a large vehicle to transfer the trailer to the use site. At the same time, due to the overall light weight of the trailer, the loading and unloading of the trailer is easier. When using the trailer of the present invention to transport large drones over short distances, compared with manual lifting, it saves more time and manpower, and the operation method is simple and safer. Compared with the case of transporting drones by vehicle, the loading height of the trailer of the present invention is lower, which is convenient for loading and unloading of drones. In addition, the trailer adopts sand tires and has a low overall dead weight, so it has strong applicability and good passability when used on unpaved roads such as deserts and Gobi. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0011] Figure 1 This is a schematic diagram of the overall structure of a towable four-wheel sand trailer according to an embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of the adjustable frame structure of a towable four-wheeled sand trailer according to an embodiment of the present utility model;

[0013] Figure 3 This is a schematic diagram of a support base according to an embodiment of the present utility model;

[0014] Figure 4 This is a diagram showing the state of use of a trailer loading and transporting a drone in accordance with an embodiment of the present invention;

[0015] Figure 5 A schematic structural diagram of a steering assembly in an embodiment of the present utility model;

[0016] Among them, the meaning of each serial number is as follows: 1 front wheel group, 2 rear wheel group, 3 front beam support, 4 rear beam support, 5 front strap, 6 rear strap, 7 adjustable frame, 8 locking slide, 9 pulling rod, 10 steering assembly, 11 steering link, 12 locating pin, 13 locating hole, 14 locking hole, 15 support base, 16 movable pallet a, 17 movable pallet b, 18 quick clamp, 19 positioning block. DETAILED DESCRIPTION

[0017] To make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-Figure 5 The present invention is further described in detail with reference to the accompanying drawings and specific implementation methods.

[0018] The towable four-wheeled sand trailer used in this embodiment includes a front wheel assembly 1, a rear wheel assembly 2, and an adjustable frame 7. The front wheel assembly 1 is connected to a front support beam 3, while the rear wheel assembly 2 is connected to a rear support beam 4. Both the front support beam 3 and the rear support beam 4 include a base, which is a frame structure with a lifting bracket attached to the top. The front and rear support beams 3 and 4 are connected by the adjustable frame 7. The adjustable frame 7 comprises a set of opposing upper crossbeams and a set of opposing lower crossbeams. One end of the upper crossbeam is fixed to the upper layer of the rear support beam 4 base, while one end of the lower crossbeam is fixed to the lower layer of the front support beam 3 base. The connection between the two is secured by a locking chute 8, which can be used to adjust the trailer's length. The locking chute 8 in this embodiment includes a left locking slot and a right locking slot. Each of the left and right locking slots is a two-layer structure connected by a cross plate that serves as a weight-reducing hole. The upper layer of the left and right locking slots, respectively, secures the other end of the upper crossbeam, while the lower layer, respectively, secures the other end of the lower crossbeam. The two edges of the locking slide 8 are overlapped on the adjustable frame 7, and the edges are provided with locking holes 14. The locking holes 14 can be used in conjunction with the positioning holes 13 set at different positions on the adjustable frame 7. After the lengths of the upper and lower beams are adjusted, the length of the adjustable frame 7 is fixed by using the positioning pins 12 passing through the locking holes and the positioning holes.

[0019] In this embodiment, a front strap 5 is connected to the lifting bracket of the front beam support 3, and a rear strap 6 is connected to the lifting bracket on the rear beam support 4. The front strap 5 and the rear strap 6 are used to fix the head and tail of the drone that needs to be transferred and transported.

[0020] The front and rear straps of this embodiment have the same structure, and are respectively composed of a support base 15 and movable clamps a16 and b17 hinged at both ends of the support base 15. When the movable clamps a16 and b17 are fastened together, they can form a space to support the head or tail of the drone. The end of the movable clamp b17 is connected to a quick clamp 18, which is connected to the end of the movable clamp a16 to clamp the end of the movable clamp a16. The snap ring at one end of the movable clamp b17 is engaged with the hook at the end of the movable clamp a16, and then locked by the movable plate at one end of the movable clamp b17. A positioning block 19 is installed on the surface of the support base 15, and a protrusion is set on the positioning block 19. The protrusion is connected to the bayonet at the bottom of the drone to limit the drone in the horizontal direction.

[0021] In this embodiment, the front beam support 3 is connected to the tie rod 9 and the steering link 11, respectively, via a steering assembly 10. The steering assembly 10 is connected to the front beam support 3 via a pivot pin a and can rotate about it. The main body of the steering assembly 10 is connected to the tie rod 9 and rotates around the pivot pin a as the tie rod 9 swings left and right. The steering lugs of the steering assembly 10 are connected to the steering link 11 by a pin. During steering, the tie rod 9 rotates the steering assembly 10, which then transmits this motion to the front wheel assembly 1 via the steering link 11, thereby enabling the wheelset to steer.

[0022] Before using the trailer of this embodiment to transfer and transport the drone, the trailer must first be unloaded from the rear box of the pickup truck. The trailer can be loaded and unloaded using a vehicle-mounted crane. After unloading the trailer, unfasten the locating pin 12, move the front wheel assembly 1, the rear wheel assembly 2 and the adjustable frame 7 so that the locking hole 14 on the locking chute 8 coincides with the distal locating hole 13 on the adjustable frame 7, and connect and lock the locating pin 12 to complete the trailer deployment. Connect the traction rod 9 to the steering assembly 10 to ensure a stable connection and smooth steering. Unfasten the quick clamp 18 of the front strap 5 and the rear strap 6, flip the movable card plate a16 and the movable card plate b17 to the open state, lift the drone, and move it to the top of the trailer. Align the bottom bayonet of the drone with the positioning block 19 on the support base 15, slowly drop the drone, and observe whether the positioning block is completely in contact with the drone. After confirming that the drone is placed in the correct position, flip back the movable pallet a16 and movable pallet b17 and use the quick clamp 18 to clamp and fix them. After confirming that the drone is fixed well, it can be transferred and transported.

[0023] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A tractor-type four-wheel sand trailer, characterized in that: The trailer comprises a front wheel group, a rear wheel group and an adjustable frame. The front wheel group is connected to the front beam support, and the rear wheel group is connected to the rear beam support. The front beam support and the rear beam support are connected through an adjustable frame for adjusting the trailer length. After the adjustable frame length is adjusted, it is fixed by a locking slide. A front strap is connected to the front beam support, and a rear strap is connected to the rear beam support. The front strap and the rear strap are used to fix the head and tail of the drone that needs to be transferred and transported.

2. A towable four-wheel sand trailer according to claim 1, characterized in that: The edge of the locking slot is overlapped on the side wall of the adjustable frame, and the edge is provided with a locking hole, which is used in conjunction with the positioning holes provided at different positions on the adjustable frame. The length of the adjustable frame is fixed by using a positioning pin passing through the locking hole and the positioning hole.

3. A towable four-wheel sand trailer as claimed in claim 1, characterized in that: The front strap and the rear strap have the same structure, and are respectively composed of a support base and movable clamps a and b hinged to the support base at both ends. The ends of the movable clamps b are connected to the quick clamps, and the movable clamps a are detachably connected to the movable clamps b using the quick clamps.

4. A towable four-wheel sand trailer as claimed in claim 3, characterized in that: A positioning block is also installed on the surface of the support base. The positioning block is provided with a protrusion for connecting with the bayonet at the bottom of the drone. The protrusion limits the drone in the horizontal direction.

5. The towable four-wheel sand trailer according to claim 1, characterized in that: The front beam support is connected to the pulling rod and the steering connecting rod respectively through the steering assembly.

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