Intelligent trailer system based on wireless remote control

By separating the first and second lifting components, and combining them with adjustable connectors and adjusters, the strength and lifespan of the support arm are solved, thereby improving the stability and safety of the trailer system and reducing the difficulty of operation and the risk of damage.

CN121246739AInactive Publication Date: 2026-01-02杭州瑞上五金有限公司
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Patent Information

Application Number
CN202511696916.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-19
Publication Date
2026-01-02
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In existing wireless remote-controlled trailer systems, the support arm needs to extend quite far during use, resulting in high strength requirements, high cost, and easy bending, which affects the service life.

Method used

The first and second lifting components are used in a separate configuration. Through the design of adjustable connectors and adjusters, the tires are directly loaded and evenly distributed, avoiding unstable lever forces. The drive unit and connecting rope provide automated operation.

Benefits of technology

It improves the stability and safety of the trailer system, reduces the labor intensity of operators, enhances the system's adaptability and protective functions, and avoids damage to vehicles caused by traditional trailer towing methods.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an intelligent trailer system based on wireless remote control, and belongs to the field of trailers. Comprising a first lifting piece which is provided with a first abutting surface abutting against a tire; the second lifting piece is provided with a second abutting surface abutting against the tire; the first driving piece is used for driving the first lifting piece to move; and / or the second driving piece is connected with the second lifting piece, and the second driving piece is used for driving the second lifting piece to move. The adjustable connecting piece directly or indirectly forms distance-adjustable connection between the first lifting piece and the second lifting piece; and the adjusting piece is connected with the adjustable connecting piece, and the adjusting piece enables the first lifting piece and the second lifting piece to be close to each other or away from each other through the adjustable connecting piece. The trailer arm has the beneficial effects that the first lifting part and the second lifting part are separately matched, so that the weight of a tire is directly borne, the situation that the stress of a lever is unstable due to the fact that the tire is directly lifted by a traditional trailer arm is avoided, and the product quality is improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of trailer, in particular to an intelligent trailer system based on wireless remote control. BACKGROUND

[0002] With the continuous growth of the number of cars, the vehicle needs to be towed due to failure, illegal parking or accident.

[0003] At present, the trailer is mainly based on the wireless remote control of the small car moving to the tire of the vehicle, and then a plurality of supporting arms are extended outward on the wireless remote control small car, the supporting arms are located below the tire, and then the driving structure arranged on the wireless remote control small car lifts the supporting arms upward, realizes lifting the vehicle, and uses the movement of the wireless remote control small car to transfer the position of the vehicle to carry out the operation of the trailer.

[0004] However, the wireless remote control small car is located in the middle position below the vehicle during use, and then the supporting arms are extended outward on the wireless remote control small car and contacted with the tire, forming a lever force structure, the supporting arms are extended outward on the wireless remote control small car for a long distance, and the strength requirement of the supporting arms is high, resulting in high cost of the supporting arms, and the supporting arms are easy to bend after long use, affecting the service life. SUMMARY

[0005] The summary part of the present application is used to introduce the concept in a brief form, which will be described in detail in the specific embodiment part. The summary part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide an intelligent trailer system based on wireless remote control, comprising: a first lifting piece having a first abutting surface abutting with a tire circular surface; a second lifting piece having a second abutting surface abutting with the tire circular surface; a first driving piece connected with the first lifting piece, and the first driving piece is used to drive the first lifting piece to move; and / or a second driving piece connected with the second lifting piece, and the second driving piece is used to drive the second lifting piece to move; an adjustable connecting piece directly or indirectly connecting the first lifting piece and the second lifting piece with adjustable distance; an adjusting piece connected with the adjustable connecting piece, and the adjusting piece makes the first lifting piece and the second lifting piece close to or away from each other through the adjustable connecting piece.

[0007] Further, the first abutting surface and the second abutting surface are both arc surfaces.

[0008] Further, the first lifting piece further has two oppositely arranged first blocking surfaces; the second lifting piece further has two oppositely arranged second blocking surfaces; the first blocking surfaces and the first abutting surfaces form a first accommodating area for accommodating part of the tire; the second blocking surfaces and the second abutting surfaces form a second accommodating area for accommodating part of the tire.

[0009] Further, the first lifting piece comprises a supporting structure and a lifting structure; the supporting structure forms the first abutting surfaces and the first blocking surfaces; the lifting structure connects the supporting structure with the first driving piece, and the lifting structure is used to drive the supporting structure to move upward and downward.

[0010] Further, the adjustable connecting piece comprises a first connecting structure, a second connecting structure and an adjustable structure arranged between the first connecting structure and the second connecting structure; the adjustable structure forms a distance-adjustable connection between the first connecting structure and the second connecting structure; the first connecting structure is connected with the first lifting piece, and the second connecting structure is connected with the second lifting piece.

[0011] Further, a threaded hole is arranged on the first connecting structure, the adjustable structure comprises a threaded rod which is threadedly connected with the threaded hole; the adjusting piece is arranged on the second connecting structure, and the adjusting piece is used to drive the threaded rod to rotate.

[0012] Further, the adjusting piece comprises a rotating motor, a shifting motor, a rotating rod and a plug rod; a plug slot is arranged on the threaded rod; the rotating rod is connected with the output end of the rotating motor, and the shifting motor is used to drive the rotating rod to directly or indirectly approach and move away from the threaded rod; a first limiting part and a second limiting part are arranged in the plug slot; the first limiting part and the plug slot form a first limiting slot, and the second limiting part and the plug slot form a second limiting slot; the plug rod is matched with the first limiting slot; the plug rod is sequentially inserted into the first limiting slot and the second limiting slot; when the plug rod is inserted into the second limiting slot, the plug rod rotates to abut against the second limiting slot, and the rotating rod contacts the first limiting slot.

[0013] Further, the plug rod rotates to abut against the second limiting slot in forward rotation or reverse rotation; when the plug rod abuts against the second limiting slot, the plug rod repels the first limiting slot so that the plug rod is clamped in the second limiting slot.

[0014] Further, the first lifting piece and the second lifting piece are arranged in four groups, each group of the first lifting piece and the second lifting piece is used in cooperation with a tire of a vehicle which needs to be towed; a connecting rope is arranged between each group of the first lifting piece and / or a connecting rope is arranged between each group of the second lifting piece.

[0015] Further, an outrigger is arranged on the first lifting piece and / or the second lifting piece, the outrigger is partially located outside the vehicle requiring towing, the connecting rope is connected with the outrigger, and the connecting rope is located outside the vehicle requiring towing.

[0016] The beneficial effects of the present application are: Through the separate cooperation of the first lifting piece and the second lifting piece, the weight of the tire is directly borne, avoiding the instability of the lever force caused by the traditional towing arm directly lifting the tire, and improving the product quality.

[0017] Through the clamping and lifting of the first lifting piece and the second lifting piece from both sides of the tire, synchronous lifting and moving of the four tires of the vehicle are realized. This way makes the vehicle weight evenly distributed on the four lifting points, avoiding damage to the vehicle chassis and transmission system in the traditional towing way, and the overall force is more scientific and reasonable, the system stability is strong, and the safety factor is high.

[0018] The automatic positioning of the lifting piece, the clamping of the tire, the lifting of the vehicle, the movement of the path, and the whole-process automation of the unloading are realized, which significantly reduces the labor intensity and skill requirement of the operator, and improves the operation efficiency.

[0019] Self-adaptation and strong protection: The design of the adjustable connecting piece and the adjusting piece enables the system to adapt to different sizes of tires. In addition, the cooperation of the connecting rope and the outrigger can preferentially contact potential obstacles during towing, forming a protective barrier, effectively warning and avoiding scratching of the vehicle chassis, and providing all-round protection for the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings that form a part of this application are intended to provide further understanding of the application, so that other features, objects and advantages of the application become more apparent. The illustrative embodiment drawings of the application and their descriptions serve to explain the application, and do not constitute an undue limitation on the application.

[0021] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn to scale.

[0022] In the drawings: Figure 1 is a whole schematic diagram according to the embodiment of the present application; Figure 2 is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the support structure, the lifting structure and part of the surrounding parts; Figure 3 is a structural schematic diagram of a part of the embodiment, mainly showing the structure of the adjustable connecting piece and the adjusting piece; Figure 4 is a structural schematic diagram that is part of an embodiment, mainly showing the structure of the rotating rod and the insertion rod; Figure 5 is a structural schematic diagram that is part of an embodiment, mainly showing the structure of the threaded rod and the insertion slot; Figure 6 is a structural schematic diagram that is part of an embodiment, mainly showing the position distribution structure of the plurality of first abutting pieces and the plurality of second abutting pieces in use; Figure 7 is a structural schematic diagram that is part of an embodiment, mainly showing the exploded schematic diagram of the rotating rod and the threaded rod; Figure 8 is a structural schematic diagram that is part of an embodiment, mainly showing the structure of the first limiting part and the first limiting slot; Figure 9 is a structural schematic diagram that is part of an embodiment, mainly showing the structure of the second limiting part and the second limiting slot; Figure 10 is a structural schematic diagram that is part of an embodiment, mainly showing the structure corresponding to the embodiment in which the first limiting surface and the second limiting surface exist.

[0023] The following is a description of the reference numerals: 1, first lifting piece; 11, first abutting surface; 12, first blocking surface; 13, support structure; 14, lifting structure; 15, moving frame; 16, wheel body; 2, second lifting piece; 21, second abutting surface; 22, second blocking surface; 3, adjustable connecting piece; 31, first connecting structure; 32, second connecting structure; 33, adjustable structure; 331, threaded rod; 332, insertion slot; 333, first limiting part; 334, second limiting part; 335, first limiting slot; 336, second limiting slot; 4, adjusting piece; 41, rotating motor; 42, displacement motor; 43, rotating rod; 44, insertion rod; 5, outrigger; 6, connecting rope. DETAILED DESCRIPTION

[0024] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the scope of protection of the present disclosure.

[0025] In addition, it needs to be noted that only parts related to the present application are shown in the drawings for the convenience of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0027] It should be noted that the modification of "one", "multiple" mentioned in the present disclosure is illustrative but not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0028] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] Referring to Figures 1-10 The wireless remote control based intelligent trailer system provided by the present application comprises a first lifting piece 1, a second lifting piece 2, an adjustable connecting piece 3, an adjusting piece 4, a first driving piece and / or a second driving piece.

[0030] The first lifting piece 1 has a first abutting surface 11 abutting against the tire circular surface. The second lifting piece 2 has a second abutting surface 21 abutting against the tire circular surface. Preferably, the first abutting surface 11 and the second abutting surface 21 are both arc surfaces. The arc surfaces are used to make more sufficient contact with the tire surface, so as to more stably fix the tire in position and lift the tire. The first lifting piece 1 and the second lifting piece 2 can also lift the tire, so that the cooperation of the multiple first lifting pieces 1 and the multiple second lifting pieces 2 can lift the vehicle that needs to be towed.

[0031] The first driving member is connected with the first lifting member 1, and the first driving member is used to drive the first lifting member 1 to move. And / or the second driving member is connected with the second lifting member 2, and the second driving member is used to drive the second lifting member 2 to move. The first driving member drives the first lifting member 1 to move, and the second driving member drives the second lifting member 2 to move, which forms an AGV trolley. Therefore, by arranging the first driving member and / or the second driving member, the vehicle requiring a trailer can be moved. The first lifting member 1 and the second lifting member 2 each have a wheel body 16, and the first driving member and / or the second driving member drives the wheel body 16 to rotate to move the first lifting member 1 and the second lifting member 2. The adjustable connecting member 3 directly or indirectly forms a distance-adjustable connection between the first lifting member 1 and the second lifting member 2. The adjusting member 4 is connected with the adjustable connecting member 3, and the adjusting member 4 drives the first lifting member 1 and the second lifting member 2 to move closer to each other or farther away from each other through the adjustable connecting member 3. Therefore, the first lifting member 1 and the second lifting member 2 are used to clamp the tire by moving closer to each other, and then the first lifting member 1 and the second lifting member 2 lift the tire at the same time. The first lifting member 1 and the second lifting member 2 move away from each other to place the tire on the ground, and the tire of another vehicle requiring a trailer is lifted and moved. Therefore, the first lifting member 1 and the second lifting member 2 are moved as a whole and lifted upward, and compared with the conventional way of lifting the vehicle by the trailer arm, the first lifting member 1 and the second lifting member 2 of the present application bear the weight of the car more reasonably, thereby having better quality and being less likely to be damaged.

[0032] The distance-adjustable connecting member 3 of the present application can be a rope body with quick-release buckles at both ends. First, the first driving member and / or the second driving member is used to move the first lifting member 1 and the second lifting member 2 closer to each other, and when the first lifting member 1 and the second lifting member 2 clamp the tire, the user fixes the quick-release buckles on the rope body with the first lifting member 1 and the second lifting member 2, so that the maximum distance between the first lifting member 1 and the second lifting member 2 is limited by the rope body, and the first lifting member 1 and the second lifting member 2 clamp the tire and lift the tire. In this example, the adjusting member 4 can be a quick-release buckle arranged on the rope body, and the quick-release buckle adjusts the position relative to the rope body to change the maximum distance between the first lifting member 1 and the second lifting member 2.

[0033] Specifically, the first lifting piece 1 further has two oppositely arranged first blocking surfaces 12; the second lifting piece 2 further has two oppositely arranged second blocking surfaces 22. The first blocking surfaces 12 and the first abutting surfaces 11 form a first accommodating area for accommodating part of the tire; the second blocking surfaces 22 and the second abutting surfaces 21 form a second accommodating area for accommodating part of the tire. The first blocking surfaces 12 and the second blocking surfaces 22 are arranged to better lift the tire and prevent the tire from separating from the first lifting piece 1 and the second lifting piece 2.

[0034] Specifically, the first lifting piece 1 comprises a support structure 13 and a lifting structure 14; the support structure 13 forms the first abutting surfaces 11 and the first blocking surfaces 12; the lifting structure 14 connects the support structure 13 with the first driving piece, and the lifting structure 14 is used to drive the support structure 13 to move upward and downward. The lifting structure 14 is an electric push rod, which drives the support structure 13 to move upward and downward. The first lifting piece 1 further comprises a moving frame 15, the support structure 13 and the lifting structure 14 are arranged on the moving frame 15, and the wheel body 16 and the driving piece are also arranged on the moving frame 15. Embodiment

[0035] The difference between Embodiment 2 and Embodiment 1 is that: The adjustable connecting piece 3 comprises a first connecting structure 31, a second connecting structure 32, and an adjustable structure 33 arranged between the first connecting structure 31 and the second connecting structure 32. The adjustable structure 33 forms a distance-adjustable connection between the first connecting structure 31 and the second connecting structure 32; the first connecting structure 31 is connected with the first lifting piece 1, and the second connecting structure 32 is connected with the second lifting piece 2.

[0036] Specifically, the first connecting structure 31 is provided with a threaded hole, and the adjustable structure 33 comprises a threaded rod 331 threadedly connected with the threaded hole; the adjusting piece 4 is arranged on the second connecting structure 32, and the adjusting piece 4 is used to drive the threaded rod 331 to rotate.

[0037] In this embodiment, the first connecting structure 31 and the second connecting structure 32 are connected in a rigid manner by the threaded connection of the threaded rod 331 and the threaded hole, and then the driving piece drives the threaded rod 331 to rotate, so that the first connecting structure 31 and the second connecting structure 32 can be moved closer to each other, thereby actively moving the first lifting piece 1 and the second lifting piece 2 closer to or farther away from each other.

[0038] Some specific solutions are summarized, the adjusting member 4 includes: a rotating motor 41, a displacement motor 42, a rotating rod 43 and a plug rod 44. The threaded rod 331 is provided with a slot 332. The rotating rod 43 is connected with the output end of the rotating motor 41, and the displacement motor 42 is used to drive the rotating rod 43 to be close to or away from the threaded rod 331 directly or indirectly. The slot 332 is provided with a first limiting portion 333 and a second limiting portion 334, the first limiting portion 333 and the slot 332 form a first limiting groove 335, and the second limiting portion 334 and the slot 332 form a second limiting groove 336. The shape of the plug rod 44 matches the first limiting groove 335. The plug rod 44 is sequentially inserted into the first limiting groove 335 and the second limiting groove 336; when the plug rod 44 is inserted into the second limiting groove 336, the plug rod 44 is rotated to abut against the second limiting groove 336, and the rotating rod 43 is in contact with the first limiting groove 335. Wherein, the shape of the plug rod 44 matches the first limiting groove 335, so that the plug rod 44 can be inserted into the first limiting groove 335. In this scheme, the displacement motor 42 drives the rotating rod 43 to move, the rotating rod 43 drives the plug rod 44 to move, the plug rod 44 can be inserted into the first limiting groove 335 and pass through the first limiting groove 335, so that the plug rod 44 enters the second limiting groove 336. Then the rotating motor 41 drives the rotating rod 43 to rotate, so that the plug rod 44 rotates in the second limiting groove 336. In addition, the plug rod 44 rotates forward or reversely to abut against the second limiting groove 336, and when the plug rod 44 abuts against the second limiting groove 336, the plug rod 44 repels the first limiting groove 335 to make the plug rod 44 clamped in the second limiting groove 336. Therefore, when the rotating rod 43 rotates to the plug rod 44 abutting against the second limiting groove 336, the plug rod 44 drives the threaded rod 331 to rotate together, and the threaded rod 331 is threadedly connected with the first connecting structure, so that the rotation of the threaded rod 331 can make the first connecting structure 31 and the second connecting structure 32 close to or away from each other. More specifically, the threaded rod 331 is composed of two sections, one of which is used to set the first limiting portion 333, and the other of which is used to set the second limiting portion 334. The two sections of the threaded rod 331 are threadedly connected.

[0039] In this scheme, the split design of the threaded rod 331 and the rotating rod 43 enables the tire to normally be between the first lifting member 1 and the second lifting member 2. Thus, the first lifting member 1 and the second lifting member 2 can be more automatically moved on the road to a specified vehicle position, automatically close to each other and then automatically locked, then the vehicle is lifted and moved to a suitable position on the road.

[0040] Specifically, the first lifting piece 1 and the second lifting piece 2 are provided with four groups, each group of the first lifting piece 1 and the second lifting piece 2 is matched with a tire of the vehicle needing to be towed; a connecting rope 6 is arranged between each group of the first lifting piece 1 and / or between each group of the second lifting piece 2. An outrigger 5 is arranged on the first lifting piece 1 and / or the second lifting piece 2, the outrigger 5 is partially located outside the vehicle needing to be towed, the connecting rope 6 is connected with the outrigger 5, and the connecting rope 6 is located outside the vehicle needing to be towed. The connecting rope 6 is arranged to avoid the case that the vehicle collides with an obstacle during movement of the vehicle, causing the chassis to be scratched. The connecting rope 6 will contact the obstacle first, so that the obstacle in front can be found in time and the moving direction can be changed in time, and the vehicle is better protected during towing.

[0041] The use process of the present application is as follows: The operator controls the first driving piece and the second driving piece to work through wireless remote control, drives each group of the first lifting piece 1 and the second lifting piece 2 to move to the two sides of the corresponding tire of the target vehicle respectively, and preliminarily adjusts the relative positions, so that the tire is roughly located between the first containing area and the second containing area.

[0042] The adjusting piece 4 is started through wireless remote control. The adjusting piece 4 drives the first lifting piece 1 and the second lifting piece 2 to move towards each other through the adjustable connecting piece 3 (such as the threaded rod 331 transmission mechanism in embodiment 2), until the first abutting surface 11 and the second abutting surface 21 are fully attached to the tire round surface and clamped. At this time, the tire sidewall also contacts the first stop surface 12 and the second stop surface 22, and is stably limited in the clamping space formed by the first containing area and the second containing area.

[0043] After confirming that all the tires are clamped firmly, the lifting structure 14 (such as an electric push rod) on each lifting piece acts synchronously, and the support structure 13 is jacked up, so as to lift the vehicle tire off the ground. The lifting speed of the four wheels is ensured to be synchronous, so as to maintain the stable posture of the vehicle.

[0044] After the vehicle is lifted, the operator controls the driving piece (such as a driving wheel) on each lifting piece through wireless remote control, so that the whole system carries the towed vehicle to move along the predetermined path to the destination. During the movement, the connecting rope 6 connected between the outriggers 5 of the lifting pieces can touch low obstacles in advance, thereby providing preliminary protection for the vehicle.

[0045] After arriving at the target position, the lifting structure 14 is controlled to act reversely, so as to stably lower the vehicle to the ground. Then, the adjusting piece 4 is controlled to move the first lifting piece 1 and the second lifting piece 2 away from each other, so as to release the clamping of the tire. Finally, the lifting piece is driven to move away from below the vehicle tire, and the whole towing operation is completed.

[0046] The above description is merely exemplary of some preferred embodiments of the present disclosure and of the principles thereof. It is to be understood that the present disclosure is not limited to the specific technical features described above, and that the scope of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, but also covers other technical solutions formed by the combinations of the above technical features or equivalent features thereof without departing from the above inventive concept. For example, the above technical features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) to form technical solutions.

Claims

1. A smart trailer system based on wireless remote control, characterized by: The system comprises: a first lifting piece with a first contact surface for contacting the tire; a second lifting piece with a second contact surface for contacting the tire; a first driving piece connected to the first lifting piece and configured to drive the first lifting piece to move; and / or a second driving piece connected to the second lifting piece and configured to drive the second lifting piece to move; an adjustable connecting piece directly or indirectly connecting the first lifting piece and the second lifting piece; an adjusting piece connected to the adjustable connecting piece and configured to drive the first lifting piece and the second lifting piece to move closer to or farther away from each other through the adjustable connecting piece.

2. The intelligent trailer system based on wireless remote control according to claim 1, wherein: the first contact surface and the second contact surface are both arc surfaces.

3. The intelligent trailer system based on wireless remote control according to claim 1, wherein: the first lifting piece further comprises two first stop surfaces arranged oppositely; the second lifting piece further comprises two second stop surfaces arranged oppositely; the first stop surfaces and the first contact surface form a first accommodating area for accommodating part of the tire; the second stop surfaces and the second contact surface form a second accommodating area for accommodating part of the tire.

4. The intelligent trailer system based on wireless remote control according to claim 1, wherein: the first lifting piece comprises a supporting structure and a lifting structure; the supporting structure forms the first contact surface and the first stop surfaces; and the lifting structure connects the supporting structure and the first driving piece and is configured to drive the supporting structure to move up and down.

5. The intelligent trailer system based on wireless remote control according to claim 1, wherein: the adjustable connecting piece comprises a first connecting structure, a second connecting structure, and an adjustable structure arranged between the first connecting structure and the second connecting structure; the adjustable structure forms an adjustable connection between the first connecting structure and the second connecting structure; the first connecting structure is connected to the first lifting piece, and the second connecting structure is connected to the second lifting piece.

6. The intelligent trailer system based on wireless remote control according to claim 1, wherein: a threaded hole is arranged on the first connecting structure, and the adjustable structure comprises a threaded rod screw-connected to the threaded hole; the adjusting piece is arranged on the second connecting structure and is configured to drive the threaded rod to rotate.

7. The intelligent trailer system based on wireless remote control according to claim 1, wherein: the adjusting piece comprises a rotating motor, a shifting motor, a rotating rod, and a plug rod; and a slot is arranged on the threaded rod; the rotating rod is connected to the output end of the rotating motor, and the shifting motor is configured to drive the rotating rod to move closer to or farther away from the threaded rod directly or indirectly; first and second limiting portions are arranged in the slot; the first limiting portion and the slot form a first limiting slot, and the second limiting portion and the slot form a second limiting slot; the plug rod is shaped to match the first limiting slot. The insertion rod is inserted into the first limiting groove and the second limiting groove in sequence; when the insertion rod is inserted into the second limiting groove, the insertion rod rotates to abut against the second limiting groove, and the rotating rod contacts the first limiting groove.

8. The intelligent trailer system based on wireless remote control according to claim 1, characterized in that: The insertion rod rotates to abut against the second limiting groove in forward rotation or reverse rotation; when the insertion rod abuts against the second limiting groove, the insertion rod repels the first limiting groove so that the insertion rod is clamped in the second limiting groove.

9. The intelligent trailer system based on wireless remote control according to claim 8, characterized in that: The first lifting piece and the second lifting piece are provided in four groups, and each group of the first lifting piece and the second lifting piece is used in cooperation with a tire of a vehicle requiring towing. A connecting rope is arranged between each group of the first lifting piece and / or between each group of the second lifting piece.

10. The intelligent trailer system based on wireless remote control according to claim 9, characterized in that: An outrigger is arranged on the first lifting piece and / or the second lifting piece, the outrigger is partially located outside the vehicle requiring towing, the connecting rope is connected to the outrigger, and the connecting rope is located outside the vehicle requiring towing.