Length-adjustable trailer set

Abstract

The present invention provides a trailer group with adjustable length, comprising a main vehicle group, a vehicle group and an adjustment component connecting the main vehicle group and the vehicle group, wherein the adjustment component comprises a control chip, a first driving member, a first fixing member, a second fixing member, a telescopic arm and a second driving member; the control chip is used to control the second driving member to drive the telescopic arm to perform telescopic movement, so as to realize the movement of the vehicle group towards or away from the main vehicle group, and to control the first driving member to drive the second fixing member to slide in the first fixing member for position fine adjustment, so as to realize the second fixing member being fixed in the first fixing member. The present invention can change the length of the trailer group according to different transportation requirements, thereby improving the versatility of the trailer group.

Description

[Technical field]

[0001] The invention relates to the technical field of trailers, and in particular to a trailer group with adjustable length. [Background technology]

[0002] Trailers are an important type of road transport vehicle, with advantages such as rapidity, mobility, flexibility, and safety, and can easily realize section transportation. Usually, a trailer group includes a main vehicle group and a follower group. After the main vehicle group and the follower group are docked and fixed, the main vehicle group drives the follower group to move to realize the transportation function. After the main vehicle group and the follower group are connected, the existing trailer group is relatively fixed, that is, the overall trailer group cannot change its length, and the length of the trailer group cannot be adjusted according to actual transportation needs, and the versatility is poor.

[0003] In view of this, it is necessary to provide a new type of trailer group with adjustable length to overcome the above-mentioned defects. [Summary of the invention]

[0004] The purpose of the present invention is to provide a trailer group with adjustable length, which can change the length of the trailer group according to different transportation requirements and improve the versatility of the trailer group.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a trailer group with adjustable length, comprising a main vehicle group, a vehicle group and an adjustment component connecting the main vehicle group and the vehicle group, the adjustment component comprising a control chip, a first driving member, a first fixing member, a second fixing member, a telescopic arm and a second driving member, the first fixing member is fixed on the main vehicle group, the second fixing member is fixed on the vehicle group, the second fixing member is accommodated in the first fixing member to realize that the vehicle group is connected to the main vehicle group, the telescopic arm is arranged on both sides of the vehicle group, and the end of the telescopic arm away from the vehicle group is installed on the main vehicle group, the second driving member is arranged on the vehicle group, and the second driving member is connected to the telescopic arm; the control chip is used to control the second driving member to drive the telescopic arm to perform telescopic movement to realize that the vehicle group moves in a direction close to or away from the main vehicle group, and control the first driving member to drive the second fixing member to slide in the first fixing member for position fine-tuning to realize that the second fixing member is fixed in the first fixing member.

[0006] In a preferred embodiment, the telescopic arm includes a plurality of connecting pipes with gradually increasing diameters and which are sequentially sleeved, the connecting pipe with the largest diameter is fixed on the accompanying vehicle group and connected to the second driving member, and the connecting pipe with the smallest diameter is installed on the main vehicle group.

[0007] In a preferred embodiment, a clamping ring is provided on the bottom surface of the main vehicle support plate of the main vehicle group, and a limiting hole is formed in the clamping ring, and a limiting pin is accommodated in the limiting hole. A groove is formed in the connecting pipe with the smallest diameter, and the connecting pipe with the smallest diameter passes through the clamping ring and the groove is aligned with the limiting hole, and the limiting pin is clamped in the groove and the limiting hole.

[0008] In a preferred embodiment, the main vehicle pallet of the main vehicle group is connected to a supporting plate, the first fixing part is a slideway, the slideway is fixed on the supporting plate, the control chip and the first driving part are arranged in the slideway, the second fixing part is a slider, the slider is fixed on one end of the accompanying vehicle pallet of the accompanying vehicle group, and the slider is accommodated in the slideway.

[0009] In a preferred embodiment, the slide includes a pair of spaced-apart side walls, a strip groove is provided on the side of the side wall close to the slider, and the slider includes a pair of spaced-apart side panels, a convex strip is provided on the side of the side panel close to the side wall, and the convex strip is clamped in the strip groove.

[0010] In a preferred embodiment, the side wall is provided with a plurality of positioning holes, the side panel and the convex strip are provided with a plurality of through holes arranged in parallel, the sliding block is provided with a receiving groove, the receiving groove accommodates an electromagnet part, and a plurality of positioning columns are connected to both sides of the electromagnet part, and the electromagnet part is used to drive the positioning column to pass through the through hole and the positioning hole.

[0011] In a preferred embodiment, a mutual sensing camera is provided at one end of the main vehicle group close to the adjustment component and at one end of the accompanying vehicle group close to the adjustment component.

[0012] In a preferred embodiment, the main vehicle group is provided with a main vehicle landing gear, and the accompanying vehicle group is provided with an accompanying vehicle landing gear, the main vehicle landing gear is used to adjust the lateral position of the main vehicle group, and the accompanying vehicle landing gear is used to adjust the longitudinal position of the accompanying vehicle group.

[0013] In a preferred embodiment, auxiliary wheels are provided on the bottom surface of the vehicle-mounted pallet of the vehicle-mounted group.

[0014] In a preferred embodiment, the first driving member and the second driving member are numerically controlled hydraulic cylinders.

[0015] Compared with the prior art, the length-adjustable trailer group provided by the present invention comprises a main vehicle group, a vehicle group and an adjustment component connecting the main vehicle group and the vehicle group, the adjustment component comprises a control chip, a first driving member, a first fixing member, a second fixing member, a telescopic arm and a second driving member, the first fixing member is fixed on the main vehicle group, the second fixing member is fixed on the vehicle group, the second fixing member is accommodated in the first fixing member to connect the vehicle group to the main vehicle group, the telescopic arm is arranged on both sides of the vehicle group, and one end of the telescopic arm away from the vehicle group is installed on the main vehicle group, the second driving member is arranged on the vehicle group, and the second driving member is connected to the telescopic arm, when the trailer group When the length needs to be adjusted, the control chip can receive the control command sent by the user to generate a corresponding control signal, and send the control signal to the first drive member and the second drive member respectively. After receiving the control signal, the second drive member can drive the telescopic arm to perform telescopic movement to realize the movement of the accompanying vehicle group towards or away from the main vehicle group. After receiving the control signal, the first drive member can drive the second fixing member to slide in the first fixing member to fine-tune the position, so that the second fixing member can be fixed in the first fixing member. With this design, the length of the trailer group can be changed according to different transportation needs, thereby improving the versatility of the trailer group.

Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A structural diagram of a trailer group with adjustable length provided by the present invention;

[0018] Figure 2 for Figure 1 A partial structural diagram of a trailer group with adjustable length shown;

[0019] Figure 3 A structural diagram of another part of the length-adjustable trailer group provided by the present invention;

[0020] Figure 4 for Figure 3 An enlarged view of the length-adjustable trailer group at point A is shown;

[0021] Figure 5 for Figure 3 An enlarged view of point B in the adjustable-length trailer group is shown. [Specific implementation method]

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0023] See also Figure 1 , which is a structural diagram of a length-adjustable trailer group 100 provided by the present invention. The length-adjustable trailer group 100 provided by the present invention comprises a main vehicle group 10, a vehicle group 20 and an adjustment component 30 connecting the main vehicle group 10 and the vehicle group 20.

[0024] Please also read Figure 2 and Figure 3 The adjustment assembly 30 includes a control chip 40, a first driving member 50, a first fixing member 60, a second fixing member 70, a telescopic arm 80 and a second driving member 90. Specifically, the first fixing member 60 is fixed to the main vehicle group 10, the second fixing member 70 is fixed to the accompanying vehicle group 20, the second fixing member 70 is accommodated in the first fixing member 60 to realize the connection of the accompanying vehicle group 20 to the main vehicle group 10, the telescopic arm 80 is arranged on both sides of the accompanying vehicle group 20, and one end of the telescopic arm 80 away from the accompanying vehicle group 20 is installed on the main vehicle group 10, the second driving member 90 is arranged on the accompanying vehicle group 20, and the second driving member 90 is connected to the telescopic arm 80.

[0025] The control chip 40 is used for the second driving member 90 to drive the telescopic arm 80 to perform telescopic movement, so as to enable the accompanying vehicle group 20 to move toward or away from the main vehicle group 10, and to control the first driving member 50 to drive the second fixing member 70 to slide in the first fixing member 60 for fine-tuning the position, so as to enable the second fixing member 70 to be fixed in the first fixing member 60. It can be understood that in order to adapt to different application scenarios, when the trailer group 100 needs to adjust the length, the control chip 40 can receive the control command sent by the user to generate a corresponding control signal, and send the control signal to the second drive member 90 and the first drive member 50 respectively. After receiving the control signal, the second drive member 90 can drive the telescopic arm 80 to perform telescopic movement. After receiving the control signal, the first drive member 50 can drive the second fixing member 70 to slide in the first fixing member 60 for fine-tuning the position, so as to realize the movement of the accompanying vehicle group 20 in the direction of approaching or away from the main vehicle group 10, and after moving to the required position, the position is fine-tuned to realize that the second fixing member 60 can be fixed in the first fixing member 50. Such a design realizes the precise docking of the trailer group and can change the length of the trailer group 100 to adapt to different transportation needs.

[0026] Therefore, the length-adjustable trailer group 100 provided by the present invention comprises a main vehicle group 10, a vehicle group 20 and an adjustment component 30 connecting the main vehicle group 10 and the vehicle group 20, the adjustment component 30 comprises a control chip 40, a first driving member 50, a first fixing member 60, a second fixing member 70, a telescopic arm 80 and a second driving member 90, the first fixing member 60 is fixed on the main vehicle group 10, the second fixing member 70 is fixed on the vehicle group 20, the second fixing member 70 is accommodated in the first fixing member 60 to connect the vehicle group 20 to the main vehicle group 10, the telescopic arm 80 is arranged on both sides of the vehicle group 20, and the end of the telescopic arm 80 away from the vehicle group 20 is installed on the main vehicle group 10, the second driving member 90 is arranged on the vehicle group 20, and the second driving member 90 is connected The telescopic arm 80, when the trailer group 100 needs to adjust the length, the control chip 40 can receive the control command sent by the user to generate a corresponding control signal, and send the control signal to the first drive member 50 and the second drive member 90 respectively. After receiving the control signal, the second drive member 90 can drive the telescopic arm 80 to perform telescopic movement to realize the movement of the accompanying vehicle group 20 towards or away from the main vehicle group 10. After receiving the control signal, the first drive member 50 can drive the second fixing member 70 to slide in the first fixing member 60 for fine-tuning the position, so that the second fixing member 70 can be fixed in the first fixing member 60. With this design, the length of the trailer group 100 can be changed according to different transportation needs, thereby improving the versatility of the trailer group 100.

[0027] Please also read Figure 4 and Figure 5 The main vehicle group 10 includes a front vehicle 11 and a main vehicle pallet 12 located at one side of the front vehicle 11 and connected to the front vehicle 11. The main vehicle pallet 12 can be used to carry a cargo box 101. The box 101 can be installed after the main vehicle group 10 is docked with the accompanying vehicle group 20. A plurality of wheels 102 are arranged below the front vehicle 11 and the main vehicle pallet 12. In this embodiment, a side of the main vehicle pallet 12 away from the front vehicle 11 is connected to a bearing plate 13, and the bearing plate 13 is used to carry the first fixing member 60.

[0028] A snap ring 121 is provided on the bottom surface of the main vehicle support plate 12, and the snap ring 121 has a limiting hole 122, and a limiting pin 123 is accommodated in the limiting hole 122. The snap ring 121 is used to insert the telescopic arm 80, and the limiting pin 123 is used to clamp the telescopic arm 80 in the snap ring 121 to realize the installation of the telescopic arm 80 to the main vehicle group 10.

[0029] Further, a mutual sensing camera 14 is provided at one end of the main vehicle group 10 close to the adjustment component 30, and a mutual sensing camera 14 is also provided at one end of the accompanying vehicle group 20 close to the adjustment component 30. The mutual sensing camera 14 is used to collect image information of the main vehicle group 10 and the accompanying vehicle group 20 when the main vehicle group 10 and the accompanying vehicle group 20 are docked. The relative position of the main vehicle group 10 and the accompanying vehicle group 20 can be obtained according to the collected image information, so as to facilitate the docking of the main vehicle group 10 and the accompanying vehicle group 20. In this embodiment, the mutual sensing camera 14 is fixed on the first fixing member 60 on the main vehicle group 10.

[0030] The main vehicle group 10 is also provided with a main vehicle landing gear 15, and the main vehicle landing gear 15 is used to adjust the lateral position of the main vehicle group 10 when the main vehicle group 10 is docked with the trailer group 20. The lateral direction is the length direction of the trailer group. The rollers of the main vehicle landing gear 15 can move forward and backward to adjust the lateral position of the main vehicle group. In this embodiment, the main vehicle landing gear 15 is located on one side of the load-bearing plate 13. The main vehicle landing gear 15 includes a vertical rod fixed to the bottom surface of the load-bearing plate 13, a support rod sleeved with the vertical rod, and a roller arranged at one end of the support rod. Specifically, the number of rollers is two, and the two rollers are connected through the main vehicle roller shaft of the main vehicle landing gear 15. The support rod can perform telescopic movement relative to the vertical rod in the vertical direction to fold the main vehicle landing gear to reduce the occupied space. The main vehicle landing gear also includes a support frame, and the two ends of the support frame are respectively fixed on the vertical rod and the support rod. The support frame can be bent or unfolded to support the support rod when the support rod performs telescopic movement. In this embodiment, the vertical poles are also fixed to the edge plates of the load-bearing plates through connecting rods to enhance the stability of the structure.

[0031] The vehicle group 20 includes a vehicle pallet 21 and a plurality of wheels located below the vehicle pallet 21. Specifically, a mutual sensing camera 14 is provided at one end of the vehicle group 20 close to the adjustment component 30. The mutual sensing camera 14 is fixed on the vehicle pallet 21. The mutual sensing camera 14 is used to collect image information of the main vehicle group 10 and the vehicle group 20 when the main vehicle group 10 is docked with the vehicle group 20. The relative position of the main vehicle group 10 and the vehicle group 20 can be obtained according to the collected image information, which facilitates the docking of the main vehicle group 10 with the vehicle group 20.

[0032] The vehicle group 20 is also provided with a vehicle landing gear 22, and the vehicle landing gear 22 is used to adjust the longitudinal position of the vehicle group 20, and the longitudinal direction is a direction perpendicular to the length direction of the trailer group 101. In this embodiment, the vehicle landing gear 22 is fixed on the vehicle support plate 21, and the structure of the vehicle landing gear 22 is substantially the same as that of the main vehicle landing gear 15, and the vehicle roller shaft of the vehicle landing gear 22 is perpendicular to the direction where the main vehicle roller shaft of the main vehicle landing gear is located, and the roller of the vehicle landing gear 22 can move left and right to adjust the longitudinal position of the vehicle group 20. In this embodiment, the bottom surface of the vehicle support plate 21 can also be provided with a receiving groove for receiving the vehicle landing gear 22 to prevent the vehicle landing gear 22 from occupying space.

[0033] Furthermore, auxiliary wheels 23 are provided on the bottom surface of the vehicle tray 21 of the vehicle group 20 . The auxiliary wheels 23 are fixed to the bottom surface of the vehicle tray 21 through a stand. The auxiliary wheels 23 are used to auxiliary support the vehicle group 20 .

[0034] The adjustment assembly 30 includes a control chip 40, a first driving member 50, a first fixing member 60, a second fixing member 70, a telescopic arm 80 and a second driving member 90. It can be understood that the control chip 30 has a control function, such as a micro control unit, which is a control center for data reception, calculation and output. The main vehicle landing gear 11 and the accompanying vehicle landing gear 12 can be connected to the driving member, which can receive the control signal and drive it to move.

[0035] Specifically, the first fixing member 60 is a slide, which is fixed on the supporting plate 13, the control chip 40 and the first driving member 50 are arranged in the slide, and the second fixing member 70 is a slider, which is fixed to one end of the vehicle support plate 21 of the vehicle group 20, and the slider is accommodated in the slide. It can be understood that the first driving member 50 is connected to the slider, and the first driving member 50 can drive the slider to slide in the slide to change the overall length after the main vehicle group 10 and the vehicle group 20 are docked.

[0036] The slideway includes a pair of spaced side walls 61, a strip groove 611 is provided on a side of the side wall 61 close to the slider, and the slider includes a pair of spaced side plates 71, a convex strip 711 is provided on a side of the side plate 71 close to the side wall 61, and the convex strip 711 is clamped in the strip groove 611. It can be understood that the convex strip 711 can slide along the strip groove 611 and has a guiding function when the slider is docked to the slideway.

[0037] The side wall 61 is provided with a plurality of positioning holes, the side plate 71 and the convex strip 711 are provided with a plurality of through holes 712 arranged in parallel, the slider is provided with a receiving groove 701, the receiving groove 701 contains an electromagnet 72, and the two sides of the electromagnet 72 are connected with a plurality of positioning posts 73, and the electromagnet 72 is used to drive the positioning posts 73 to pass through the through holes 712 and the positioning holes. Specifically, the electromagnet 72 is an electromagnet system, which can generate an electric field and a magnetic field after being energized, and can then drive the positioning posts 73 to move. When the slider is docked to the required position of the slideway, the electromagnet 72 can receive the control signal of the control chip and drive the positioning posts 73 to pass through the through holes 712 and the positioning holes, so as to fix the slider in the slideway, and the docking of the main vehicle group 10 and the accompanying vehicle group 20 is completed.

[0038] It can be understood that the control chip is a data receiving, calculating and outputting control center. When the main vehicle and the accompanying vehicle are docked and combined, the information of the mutual sensing camera is received, and the calculated information is then sent to the landing gear. The main vehicle landing gear adjusts the height direction, and the accompanying vehicle landing gear adjusts the left and right direction. After the main vehicle and the accompanying vehicle are docked and combined, the distance between the drawer slide hole (i.e., the positioning hole) and the positioning column is received, and the calculated information is sent to the CNC hydraulic cylinder, which accurately pushes and pulls the positioning column in the accompanying vehicle group to align with the slide hole of the main vehicle group. When the drawer slide hole is aligned with the positioning column, the information is transmitted to the control center, and the control center issues instructions to the electromagnet system to push the positioning column into the drawer slide hole, thereby realizing precise docking between the main vehicle group and the accompanying vehicle group.

[0039] The telescopic arm 80 includes a plurality of connecting pipes 81 with gradually increasing diameters and connected in sequence, and the plurality of connecting pipes 81 with gradually increasing diameters and connected in sequence can realize the telescopic movement of the telescopic arm 80. The connecting pipe 81 with the largest diameter is fixed on the vehicle group 20 and connected to the second driving member 90, and is specifically fixed on both sides of the vehicle support plate 21. The connecting pipe 81 with the smallest diameter is installed on the main vehicle group 10, and the connecting pipe with the smallest diameter is provided with an inclined surface at one end close to the main vehicle group 102 for guiding during installation. A telescopic arm 80 is provided on each of the left and right sides of the vehicle support plate 21. When the main vehicle group 10 and the vehicle group 20 are combined, the two telescopic arms 80 provide strong rigid support for the entire support, thereby improving the structural stability.

[0040] Furthermore, the connecting tube 81 with the smallest diameter is provided with a groove 811, and the connecting tube 81 with the smallest diameter passes through the clamping ring 121 on the bottom surface of the main vehicle support plate 12, and when the groove 811 is aligned with the limiting hole 122, the limiting pin 123 can be clamped in the groove 811 and the limiting hole 122, so as to realize the installation of the telescopic arm 80 on the main vehicle support plate 12. It can be understood that when the groove 811 of the connecting tube 81 is not aligned with the limiting hole 122 of the clamping ring 121, the limiting pin 123 is pushed to the upper position of the clamping ring 121 by the connecting tube 81, and when the groove 811 of the connecting tube 81 is aligned with the limiting hole 122 of the clamping ring 12, the limiting pin 123 above the clamping ring 121 automatically falls into the groove 811, and the connecting tube 81 is clamped, so that the telescopic arm 80 is installed on the main vehicle support plate 12.

[0041] In the present embodiment, the side wall 61 away from the slider is fixed to a plurality of wire guard rings 62, the wire guard rings 62 are used to clamp a plurality of cables 63 for realizing electrical connection between components, one end of the cable 63 is connected to a telescopic mechanism, the telescopic mechanism is a tape measure type telescopic mechanism, the cables of the main vehicle group 10 and the accompanying vehicle group 20 can be freely pulled out and retracted, so that the cables can be gathered and stored when the length of the trailer group 100 is adjusted.

[0042] In the trailer group 100 with adjustable length provided by the present invention, when the main vehicle group 10 is docked with the accompanying vehicle group 20, the mutual sensing camera 14 can collect image information of the main vehicle group 10 and the accompanying vehicle group 20, and the control chip 40 controls the main vehicle landing gear 15 to adjust the lateral position of the main vehicle group 10 and controls the accompanying vehicle landing gear 22 to adjust the longitudinal position of the accompanying vehicle group 20 according to the image information, so as to realize the docking of the second fixing member 70 into the first fixing member 60, and specifically, the telescopic arm 80 is driven by the second driving member 90 to perform telescopic movement, and the telescopic arm 80 drives the accompanying vehicle pallet 21 and the second fixing member 70 to move, so that the slider is docked to the required position in the slideway, and after moving to the required position The control chip obtains the distance information between the positioning columns 73 on both sides of the electromagnet part 72 in the slider and the positioning holes in the slide. The distance information can be specifically sensed by the installed distance sensor. The control chip 40 controls the first driving member 50 to drive the slider to slide in the slide according to the distance information to fine-tune the position. When the positioning columns 73 on both sides of the electromagnet part 72 are aligned with the positioning holes in the slide, the control chip 40 controls the electromagnet part 72 to push the positioning columns 73 into the positioning holes to fix the electromagnet part 72 in the slide, thereby achieving precise docking between the accompanying vehicle group 20 and the main vehicle group 10, and meeting the actual trailer length requirements.

[0043] Specifically, the first driving member 50 and the second driving member 90 are CNC hydraulic cylinders. The second driving member 90 can receive the control signal of the control chip 40 to drive the telescopic arm 80 to perform telescopic movement, so as to drive the second fixing member 70 to dock to the required position in the first fixing member 60 to meet the actual required trailer length. The first driving member 50 is used to drive the slider to slide in the slide to fine-tune the position so that the positioning columns 73 on both sides of the electromagnet member 72 are aligned with the positioning holes in the slide. After alignment, the control chip 40 controls the electromagnet member 72 to push the positioning columns 73 into the positioning holes, thereby fixing the second fixing member 70 in the first fixing member 60, and the main vehicle group 10 and the accompanying vehicle group 20 are docked. It can be understood that if the length needs to be adjusted after docking, the control chip 40 is first used to control the electromagnet part 72 to extract the positioning column 73, and then the second drive part 60 is controlled to drive the telescopic arm 80 to perform telescopic movement to meet the newly required trailer length, and the first drive part 50 drives the slider to slide in the slide to fine-tune the position, so that the positioning columns 73 on both sides of the electromagnet part 72 are aligned with the positioning holes in the slide. After alignment, the control chip 40 controls the electromagnet part 72 to push the positioning column 73 into the positioning hole, so that the main vehicle group 10 and the accompanying vehicle group 20 are re-docking and fixed, thereby realizing the length adjustment of the trailer group and being able to meet different transportation needs.

[0044] In summary, the length-adjustable trailer group 100 provided by the present invention comprises a main vehicle group 10, a vehicle group 20 and an adjustment component 30 connecting the main vehicle group 10 and the vehicle group 20, the adjustment component 30 comprises a control chip 40, a first driving member 50, a first fixing member 60, a second fixing member 70, a telescopic arm 80 and a second driving member 90, the first fixing member 60 is fixed on the main vehicle group 10, the second fixing member 70 is fixed on the vehicle group 20, the second fixing member 70 is accommodated in the first fixing member 60 to connect the vehicle group 20 to the main vehicle group 10, the telescopic arm 80 is arranged on both sides of the vehicle group 20, and the end of the telescopic arm 80 away from the vehicle group 20 is installed on the main vehicle group 10, the second driving member 90 is arranged on the vehicle group 20, and the second driving member 90 is connected The telescopic arm 80, when the trailer group 100 needs to adjust the length, the control chip 40 can receive the control command sent by the user to generate a corresponding control signal, and send the control signal to the first drive member 50 and the second drive member 90 respectively. After receiving the control signal, the second drive member 90 can drive the telescopic arm 80 to perform telescopic movement to realize the movement of the accompanying vehicle group 20 towards or away from the main vehicle group 10. After receiving the control signal, the first drive member 50 can drive the second fixing member 70 to slide in the first fixing member 60 for fine-tuning the position, so that the second fixing member 70 can be fixed in the first fixing member 60. With this design, the length of the trailer group 100 can be changed according to different transportation needs, thereby improving the versatility of the trailer group 100.

[0045] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A trailer group with adjustable length, characterized in that: The invention comprises a main vehicle group, a vehicle group and an adjustment component connecting the main vehicle group and the vehicle group, wherein the adjustment component comprises a control chip, a first driving member, a first fixing member, a second fixing member, a telescopic arm and a second driving member, wherein the first fixing member is fixed on the main vehicle group, the second fixing member is fixed on the vehicle group, the second fixing member is accommodated in the first fixing member to realize that the vehicle group is connected to the main vehicle group, the telescopic arm is arranged on both sides of the vehicle group, and the end of the telescopic arm away from the vehicle group is installed on the main vehicle group, the second driving member is arranged on the vehicle group, and the second driving member is connected to the telescopic arm; the control chip is used to control the second driving member to drive the telescopic arm to perform telescopic movement to realize that the vehicle group moves in a direction close to or away from the main vehicle group, and control the first driving member to drive the second fixing member to slide in the first fixing member to perform position fine adjustment to realize that the second fixing member is fixed in the first fixing member; The main vehicle support plate of the main vehicle group is connected to a bearing plate, the first fixing member is a slideway, the slideway is fixed to the bearing plate, the control chip and the first driving member are arranged in the slideway, the second fixing member is a slider, the slider is fixed to one end of the accompanying vehicle support plate of the accompanying vehicle group, and the slider is accommodated in the slideway; The slideway comprises a pair of spaced side walls, a side of the side wall close to the slider is provided with a strip groove, the slider comprises a pair of spaced side plates, a side of the side plate close to the side wall is provided with a convex strip, and the convex strip is clamped in the strip groove; The side wall is provided with a plurality of positioning holes, the side plate and the convex strip are provided with a plurality of through holes arranged in parallel, the slider is provided with a receiving groove, an electromagnet is received in the receiving groove, and a plurality of positioning posts are connected to both sides of the electromagnet, and the electromagnet is used to drive the positioning posts to pass through the through holes and the positioning holes; When the main vehicle group is docked with the accompanying vehicle group, the telescopic arm is driven by the second driving member to perform telescopic movement, and the telescopic arm drives the accompanying vehicle pallet and the second fixing member to move, so that the slider is docked to the required position in the slideway. After moving to the required position, the control chip obtains the distance information between the positioning columns on both sides of the electromagnet part in the slider and the positioning holes in the slideway, and the control chip controls the first driving member to drive the slider to slide in the slideway according to the distance information to perform position fine-tuning. When the positioning columns on both sides of the electromagnet part are aligned with the positioning holes in the slideway, the control chip controls the electromagnet part to push the positioning columns into the positioning holes to fix the electromagnet part in the slideway, thereby completing the docking of the accompanying vehicle group with the main vehicle group.

2. The length-adjustable trailer assembly according to claim 1, characterized in that: The telescopic arm includes a plurality of connecting pipes with gradually increasing diameters and which are sleeved in sequence. The connecting pipe with the largest diameter is fixed on the accompanying vehicle group and connected to the second driving member, and the connecting pipe with the smallest diameter is installed on the main vehicle group.

3. The length-adjustable trailer assembly as claimed in claim 2, characterized in that: A clamping ring is provided on the bottom surface of the main vehicle support plate of the main vehicle group, and a limiting hole is provided on the clamping ring. A limiting pin is accommodated in the limiting hole. A groove is provided on the connecting pipe with the smallest diameter. The connecting pipe with the smallest diameter passes through the clamping ring and the groove is aligned with the limiting hole. The limiting pin is clamped in the groove and the limiting hole.

4. The length-adjustable trailer assembly according to claim 1, characterized in that: A mutual sensing camera is provided at one end of the main vehicle group close to the adjusting component and at one end of the accompanying vehicle group close to the adjusting component.

5. The length-adjustable trailer assembly according to claim 1, characterized in that: The main vehicle set is provided with a main vehicle landing gear, and the accompanying vehicle set is provided with an accompanying vehicle landing gear. The main vehicle landing gear is used to adjust the lateral position of the main vehicle set, and the accompanying vehicle landing gear is used to adjust the longitudinal position of the accompanying vehicle set.

6. The length-adjustable trailer assembly according to claim 1, characterized in that: Auxiliary wheels are arranged on the bottom surface of the vehicle-mounted supporting plate of the vehicle-mounted group.

7. The length-adjustable trailer assembly according to any one of claims 1 to 6, characterized in that: The first driving member and the second driving member are numerically controlled hydraulic cylinders.

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