Multifunctional rescue transport trailer

Abstract

The invention relates to the technical field of transport trailers, and particularly discloses a multifunctional rescue transport trailer which comprises a trailer frame. A hoisting mechanism is installed on one side of the top end of the trailer frame body, two connecting mechanisms are installed on each of the two sides of the top end of the trailer frame body, and fixing mechanisms are installed at the top ends of the four connecting mechanisms respectively or a conveying mechanism is installed at the top ends of the four connecting mechanisms jointly. According to the rubber boat transportation trailer, hoisting and moving of objects such as a rubber boat are achieved by means of extension and retraction of the electric telescopic column, rotation of the rotating motor and take-up and pay-off principles of the winch, meanwhile, the stability of the rubber boat in the hoisting process can be improved through the supporting effect of the supporting mechanism, and therefore the rubber boat transportation trailer has the auxiliary function that the rubber boat enters water, and the service life of the rubber boat is prolonged. The rubber boat hoisting device can hoist a rubber boat to cross a river side guardrail and put the rubber boat into water, actual use requirements are met, manual carrying or matching with equipment such as small cranes and forklifts is not needed, time and labor are saved, and rescue cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of transport trailers, and particularly relates to a multi-functional rescue transport trailer. Background Art

[0002] Inflatable boats are characterized by being lightweight, having high buoyancy, and being easy to operate. They can be quickly deployed at the scene of water accidents such as floods, waterlogging, and shipwrecks, and are used to transfer trapped people and transport rescue supplies. When an inflatable boat moves on land, a transport trailer is used, which makes the land transportation of the inflatable boat simple and fast. The transport trailer enables users to easily transport the inflatable boat to waters near lakes, rivers, oceans, etc., so that they can quickly reach the rescue scene and improve the emergency response efficiency.

[0003] In the Chinese patent with the publication number CN214607261U, a special trailer for inflatable boats is mentioned. By pushing the push rod into the long groove, the first trapezoidal block is driven to push the second trapezoidal block to rise, and the central shaft pushes the roller out of the through groove, so that the top of the roller is higher than the top of the trailer body. In this way, the inflatable boat is slowly moved on the upper part of the trailer body. The bottom of the inflatable boat contacts the roller, and the inflatable boat is gradually rolled to a suitable position on the trailer body. Compared with the operation method that simply relies on manual moving, the working intensity can be effectively reduced, and a large amount of labor does not need to be consumed; however, during the use of this inflatable boat trailer, it only has the function of moving the inflatable boat and does not have an auxiliary function for entering the water. Therefore, when using it by the river with guardrails, it is necessary to manually carry the inflatable boat over the obstacle, or cooperate with a small crane or forklift to transfer the inflatable boat from the trailer to the water. This process is both time-consuming and laborious, and also increases the rescue cost, and cannot meet the actual use requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-functional rescue transport trailer with a hoisting function, which can be used to assist the inflatable boat to enter the water, so as to solve the problem of manually carrying or using a crane to carry the inflatable boat by the river with guardrails.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A multi-functional rescue transport trailer, comprising:

[0007] A trailer frame body;

[0008] A hoisting mechanism is installed on one side of the top of the trailer frame body, and two connecting mechanisms are installed on both sides of the top of the trailer frame body. Fixed mechanisms are respectively installed at the tops of the four connecting mechanisms, or a transporting mechanism is commonly installed.

[0009] The hoisting mechanism includes an electric telescopic column, a support mechanism, a rotating motor, a hoisting telescopic arm and a winch. The electric telescopic column is installed at the top end of the trailer frame body through a bearing. The support mechanism is installed on the outer surface of the electric telescopic column. The rotating motor is installed at the bottom end of the electric telescopic column. The hoisting telescopic arm is installed at the top end of the electric telescopic column. The winch is installed on one side of the bottom end of the hoisting telescopic arm.

[0010] Preferably, three guide wheel frames are installed in the middle of the top end of the trailer frame body. A fixed ring is installed on one side of the outer surface of the trailer frame body. Mounting frames are installed on both sides of the bottom end of the trailer frame body. A connecting shaft is jointly installed between the opposite surfaces of the two mounting frames through a bearing. Moving wheels are installed at both ends of the connecting shaft. Protective covers are installed on the outer walls on both sides of the trailer frame body.

[0011] Preferably, the support mechanism includes a support frame, mounting holes, connecting blocks, electric push rods, a fixed frame and support wheels. The support frame is installed at the top end of the trailer frame body. There are two mounting holes, connecting blocks, electric push rods and support wheels respectively. The two mounting holes are respectively opened at the top end and the bottom end of the support frame, and the inner walls of the two mounting holes are installed on the outer surface of the electric telescopic column through bearings. The two connecting blocks are installed at the lower parts of the outer walls on both sides of the support frame through movable shafts. The two electric push rods are respectively installed at the top ends of the two connecting blocks. The fixed frame is installed between the bottom ends of the two electric push rods. The two support wheels are both installed on the inner wall of the fixed frame through bearings.

[0012] Preferably, the support frame is arranged in a trapezoidal structure. The fixed frame is arranged in an E-shaped structure, and the bottom end surface of the fixed frame is higher than the bottom end surface of the support wheel. The electric telescopic column is arranged in a multi-stage telescopic structure.

[0013] Preferably, the fixing mechanism includes a fixing frame, a driver, an adjusting rod, a guiding frame, a fixing rope and a fixing buckle. The fixing frame is installed at the top end of the connecting mechanism. The driver is installed on the outer wall of the fixing frame. The adjusting rod is installed between the inner walls on both sides of the fixing frame through a bearing. The guiding frame is installed between the top ends on both sides of the adjusting rod. The fixing rope is installed in the middle of the top end of the adjusting rod. The fixing buckle is installed at the other end of the fixing rope.

[0014] Preferably, the guiding frame includes a rotating shaft, adjusting frames, a driving motor, adjusting brackets and guiding wheels. There are two adjusting frames and adjusting brackets respectively. The two adjusting frames are both installed on the outer surface of the rotating shaft through bearings, and the bottom ends of the two adjusting frames are installed at the top end of the adjusting rod. The driving motor is installed at the upper part of one end of one of the adjusting frames. The two adjusting brackets are respectively installed on both sides of the outer surface of the rotating shaft. There are four guiding wheels, and the four guiding wheels are respectively installed at both ends of the two adjusting brackets through movable shafts.

[0015] Preferably, both the adjusting frame and the fixing frame are arranged in a U-shaped structure, the middle part of the outer surface of the adjusting frame is arranged in a concave structure, and the fixing rope is an elastic rope.

[0016] Preferably, the connecting mechanism includes a connecting frame, a connecting bracket, a limiting block and a connecting nut. The connecting frame is sleeved and installed on the outer surface of the trailer body. The connecting bracket is inserted and installed between the inner walls on both sides of the connecting frame. There are two limiting blocks and two connecting nuts. Both of the two limiting blocks are installed on one side of the outer surface of the connecting bracket, and both of the two connecting nuts are installed on the other side of the outer surface of the connecting bracket.

[0017] Preferably, the transporting mechanism includes a transporting flat plate, support rods, hanging points, guiding plates, support pads and avoidance grooves. The transporting flat plate is installed at the top end of the connecting frame. There are four support rods, and the four support rods are respectively installed at the four corners of the top end of the transporting flat plate. There are multiple hanging points, and the multiple hanging points are respectively installed on the upper parts of the outer surfaces of the four support rods. The guiding plate is installed at one end of the transporting flat plate. There are two support pads and two avoidance grooves. The two support pads are respectively installed on both sides of the bottom end of the transporting flat plate, and the two avoidance grooves are respectively opened on both sides of the top end of the transporting flat plate.

[0018] Preferably, the top surface of the transporting flat plate is higher than the top surface of the guiding wheel frame. The connecting bracket is arranged in a U-shaped structure, and a spiral groove is opened on the other side of the outer surface of the connecting bracket.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) The present invention is provided with a hoisting mechanism at the top end of the trailer body. By using the telescopic movement of the electric telescopic column, the rotation of the rotating motor and the principle of winding and unwinding of the winch, the hoisting and movement of objects such as rubber boats can be realized. At the same time, the supporting function of the supporting mechanism can improve the stability of the rubber boat during hoisting. In this way, the transport trailer has the auxiliary function of putting the rubber boat into the water, can hoist the rubber boat across the river fence and put it into the water, meets the actual use requirements, and does not require manual handling or the cooperation of small cranes, forklifts and other equipment, which not only saves time and effort, but also reduces the rescue cost.

[0021] (2) The present invention is provided with a fixing mechanism at the top end of the connecting mechanism. By driving the adjusting rod to rotate by the driver, the angle of the guiding frame can be adjusted. By driving the guiding wheel to move by the driving motor, its position can be adjusted to make the guiding wheel contact with the outer surface of the rubber boat to play a guiding role. Subsequently, by pulling the fixing rope to install the fixing buckle on the rubber boat, the fixing of the rubber boat can be realized, and its stability can be improved.

[0022] (3) The present invention provides a transport mechanism at the top of the connection mechanism. By rotating the connection nut, the connection frame can be removed to achieve the disassembly of the fixing mechanism and the trailer body. After that, using the connection mechanism on the transport flatbed, the transport mechanism can be installed on the trailer, facilitating the replacement of the fixing mechanism with the transport mechanism. In this way, the transport trailer becomes a flatbed trailer with hanging points, which is convenient for transporting large rescue equipment such as fire-fighting robots, realizing the versatility of the rescue transport trailer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is one of the three-dimensional views of the present invention;

[0024] Figure 2 is another three-dimensional view of the present invention;

[0025] Figure 3 is the three-dimensional view of the hoisting mechanism of the present invention;

[0026] Figure 4 is the three-dimensional view of the support mechanism of the present invention;

[0027] Figure 5 is the three-dimensional view of the connection mechanism of the present invention;

[0028] Figure 6 is the three-dimensional view of the fixing mechanism of the present invention;

[0029] Figure 7 is the three-dimensional view of the guide frame of the present invention;

[0030] Figure 8 is the three-dimensional view of the transport mechanism of the present invention;

[0031] In the figures: 1. Trailer body; 2. Hoisting mechanism; 3. Connection mechanism; 4. Fixing mechanism; 5. Transport mechanism; 6. Guide wheel frame; 7. Fixed ring; 8. Mounting frame; 9. Connecting shaft; 10. Movable wheel; 11. Protective cover;

[0032] 21. Electric telescopic column; 22. Support mechanism; 23. Rotary motor; 24. Hoisting telescopic arm; 25. Winch;

[0033] 221. Support frame; 222. Mounting hole; 223. Connecting block; 224. Electric push rod; 225. Fixed frame; 226. Support wheel;

[0034] 31. Connection frame; 32. Connection frame; 33. Limit block; 34. Connection nut;

[0035] 41. Fixed frame; 42. Driver; 43. Adjusting rod; 44. Guide frame; 45. Fixed rope; 46. Fixed buckle;

[0036] 441. Rotating shaft; 442. Adjusting frame; 443. Driving motor; 444. Adjusting bracket; 445. Guide wheel;

[0037] 51. Transporting flat plate; 52. Support rod; 53. Hanging point; 54. Guide plate; 55. Support pad; 56. Avoidance groove. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1:

[0040] Please refer to Figures 1 to 8 As shown in the figure, a multifunctional rescue and transport trailer includes:

[0041] Trailer frame body 1;

[0042] On one side of the top end of the trailer frame body 1, a hoisting mechanism 2 is installed. On both sides of the top end of the trailer frame body 1, two connecting mechanisms 3 are installed. At the top ends of the four connecting mechanisms 3, a fixing mechanism 4 is installed respectively or a transporting mechanism 5 is installed jointly;

[0043] The hoisting mechanism 2 includes an electric telescopic column 21, a support mechanism 22, a rotating motor 23, a hoisting telescopic arm 24 and a winch 25. The electric telescopic column 21 is installed at the top end of the trailer frame body 1 through a bearing. The support mechanism 22 is installed on the outer surface of the electric telescopic column 21. The rotating motor 23 is installed at the bottom end of the electric telescopic column 21. The hoisting telescopic arm 24 is installed at the top end of the electric telescopic column 21. The winch 25 is installed on one side of the bottom end of the hoisting telescopic arm 24.

[0044] It can be seen from Figures 1 to 4 that three guide wheel brackets 6 are installed in the middle of the top end of the trailer frame body 1. A fixing ring 7 is installed on one side of the outer surface of the trailer frame body 1. Mounting brackets 8 are installed on both sides of the bottom end of the trailer frame body 1. A connecting shaft 9 is jointly installed between the opposite surfaces of the two mounting brackets 8 through a bearing. Moving wheels 10 are installed at both ends of the connecting shaft 9. Protective covers 11 are installed on the outer walls of both sides of the trailer frame body 1;

[0045] The support mechanism 22 includes a support frame 221, mounting holes 222, connecting blocks 223, electric push rods 224, a fixed frame 225, and support wheels 226. The support frame 221 is installed at the top end of the trailer body 1. There are two mounting holes 222, two connecting blocks 223, two electric push rods 224, and two support wheels 226. The two mounting holes 222 are respectively opened at the top and bottom ends of the support frame 221, and the inner walls of the two mounting holes 222 are installed on the outer surface of the electric telescopic column 21 through bearings. The two connecting blocks 223 are installed at the lower parts of the outer walls on both sides of the support frame 221 through movable shafts. The two electric push rods 224 are respectively installed at the top ends of the two connecting blocks 223. The fixed frame 225 is installed between the bottom ends of the two electric push rods 224. The two support wheels 226 are both installed on the inner wall of the fixed frame 225 through bearings.

[0046] As can be seen from the above, when encountering a riverside with a guardrail, the hook on the winch 25 can be hooked to the hanging ring on the rubber boat, and then the entire transport trailer is started through the controller. The winch 25 uses the principle of winding and unwinding the wire to realize the lifting and lowering of the rubber boat; the electric telescopic column 21 changes the lifting height of the rubber boat through multi-stage telescoping; the rotating motor 23 drives the electric telescopic column 21 and the lifting telescopic arm 24 to rotate to adjust the lifting direction of the rubber boat; the telescoping of the lifting telescopic arm 24 drives the winch 25 to move to adjust the position of the rubber boat. These components work together to realize the lifting and moving of objects such as rubber boats. At the same time, the trapezoidal support frame 221 can stably support the electric telescopic column 21. When the electric push rod 224 extends, it will push the fixed frame 225 to move downward, so that both support wheels 226 are in contact with the ground. With the support of the support wheels 226, the stability of the rubber boat during lifting can be improved. In this way, the transport trailer has the auxiliary function of putting the rubber boat into the water, can lift the rubber boat across the riverside guardrail and put it into the water to meet the actual use requirements, which avoids the labor cost of manually carrying the rubber boat and the cost of finding and deploying equipment such as small cranes or forklifts, saving time and effort and reducing the rescue cost.

[0047] Specifically, referring to Figures 1 to 4 As shown, the support frame 221 is set as a trapezoidal structure, the fixed frame 225 is set as an E-shaped structure, and the bottom end surface of the fixed frame 225 is higher than the bottom end surface of the support wheel 226. The electric telescopic column 21 is set as a multi-stage telescopic structure.

[0048] As can be seen from the above, the trapezoidal structure has good stability and load-bearing capacity, which helps the support frame 221 to remain stable when subjected to pressure or torque, thereby ensuring the reliable operation of the lifting mechanism 2, facilitating the firm installation of the two support wheels 226, improving the strength and stability of the overall structure, and ensuring that when the support wheels 226 are in contact with the ground, the fixed frame 225 will not interfere with the ground. The multi-stage telescopic structure allows the electric telescopic column 21 to achieve a larger telescopic range within a limited space, thereby adapting to lifting or support requirements at different heights.

[0049] Embodiment 2:

[0050] refer to Figure 6 and Figure 7 As shown, the fixing mechanism 4 includes a fixing frame 41, a driver 42, an adjusting rod 43, a guide frame 44, a fixing rope 45 and a fixing buckle 46. The fixing frame 41 is installed at the top of the connecting mechanism 3, the driver 42 is installed on the outer wall of the fixing frame 41, the adjusting rod 43 is installed between the inner walls on both sides of the fixing frame 41 through a bearing, the guide frame 44 is installed between the two sides of the top of the adjusting rod 43, the fixing rope 45 is installed at the middle of the top of the adjusting rod 43, and the fixing buckle 46 is installed at the other end of the fixing rope 45;

[0051] The guide frame 44 includes a rotating shaft 441, an adjusting frame 442, a driving motor 443, an adjusting frame 444 and a guide wheel 445. There are two adjusting frames 442 and two adjusting frames 444. The two adjusting frames 442 are installed on the outer surface of the rotating shaft 441 through bearings, and the bottom ends of the two adjusting frames 442 are installed on the top of the adjusting rod 43. The driving motor 443 is installed on the upper part of one end of the adjusting frame 442 on one side. The two adjusting frames 444 are respectively installed on both sides of the outer surface of the rotating shaft 441. There are four guide wheels 445, and the four guide wheels 445 are respectively installed on the two ends of the two adjusting frames 444 through movable shafts.

[0052] As can be seen from the above, during use, the electric push rod 224 can be started to push the support wheel 226 against the ground, and one side of the trailer frame 1 can be lifted to tilt it to the right, so that it is convenient to place the rubber boat on the transport trailer. Before placing the rubber boat, the adjusting rod 43 is driven by the driver 42 to rotate, and the angle of the entire guide frame 44 can be adjusted. Then, the rotating shaft 441 is driven to rotate by the driving motor 443, so that the two adjustment frames 444 respectively drive the guide wheels 445 thereon to rotate, and then the position of the guide wheels 445 is adjusted, so that the guide wheels 445 are in contact with the outer surface of the rubber boat to play a guiding role. Subsequently, the fixing buckle 46 is held and the fixing rope 45 is pulled to install the fixing buckle 46 on the rubber boat, thereby fixing the rubber boat, reducing the shaking and collision of the rubber boat during transportation, and improving the stability of the rubber boat.

[0053] Preferably, reference Figure 6 andFigure 7 As shown, the adjusting frame 442 and the fixing frame 41 are both set as U-shaped structures. The middle part of the outer surface of the adjusting bracket 444 is set as a concave structure, and the fixing rope 45 is set as an elastic rope.

[0054] As can be seen from the above, the U-shaped structure provides a space that is convenient for installation and fixation, and at the same time helps to disperse stress, improve the stability and load-bearing capacity of the structure. This design can avoid interference between the adjusting bracket 444 and the rubber boat, enable the fixing rope 45 to undergo elastic deformation when subjected to tension, facilitate the firm fixation of the rubber boat, and improve the safety and stability of transportation.

[0055] Embodiment Three:

[0056] Reference Figure 5 and Figure 8 As shown, the connecting mechanism 3 includes a connecting frame 31, a connecting bracket 32, a limiting block 33 and a connecting nut 34. The connecting frame 31 is sleeved and installed on the outer surface of the trailer frame body 1. The connecting bracket 32 is inserted and installed between the inner walls on both sides of the connecting frame 31. There are two limiting blocks 33 and two connecting nuts 34. The two limiting blocks 33 are both installed on one side of the outer surface of the connecting bracket 32, and the two connecting nuts 34 are both installed on the other side of the outer surface of the connecting bracket 32;

[0057] The transporting mechanism 5 includes a transporting flat plate 51, a support rod 52, a hanging point 53, a guiding plate 54, a support pad 55 and an avoidance groove 56. The transporting flat plate 51 is installed on the top end of the connecting frame 31. There are four support rods 52, and the four support rods 52 are respectively installed at the four corners of the top end of the transporting flat plate 51. There are multiple hanging points 53, and the multiple hanging points 53 are respectively installed on the upper parts of the outer surfaces of the four support rods 52. The guiding plate 54 is installed at one end of the transporting flat plate 51. There are two support pads 55 and two avoidance grooves 56. The two support pads 55 are respectively installed on both sides of the bottom end of the transporting flat plate 51, and the two avoidance grooves 56 are respectively opened on both sides of the top end of the transporting flat plate 51.

[0058] As can be seen from the above, when large rescue equipment such as a fire-fighting robot needs to be transported, the rotatable connecting nut 34 can be used to remove it from the connecting frame 32, then the connecting frame 32 can be removed from the connecting frame 31, and then the connecting frame 31 can be removed from the trailer frame body 1, so that the disassembly of the fixing mechanism 4 and the trailer frame body 1 can be realized. Subsequently, by using the connecting mechanism 3 on the transport flat plate 51, the transport mechanism 5 can be installed on the trailer frame body 1, which is convenient for replacing the fixing mechanism 4 with the transport mechanism 5. In this way, the transport trailer becomes a flatbed trailer with hanging points 53, which is convenient for transporting large rescue equipment such as fire-fighting robots, realizing the versatility of the rescue transport trailer, greatly improving the adaptability and flexibility of the trailer in various rescue environments. The design of the connecting mechanism 3 enables the trailer to flexibly replace function modules according to different rescue tasks and on-site conditions. Whether it is for water rescue, transporting large fire-fighting robots or other rescue equipment, it can be achieved through simple operations. At the same time, a trailer has multiple functions, reducing the types and quantities of rescue equipment and lowering the procurement and maintenance costs of the equipment.

[0059] Preferably, referring to Figure 5 and Figure 8 As shown, the top surface of the transport flat plate 51 is higher than the top surface of the guide wheel frame 6. The connecting frame 32 is arranged in a U-shaped structure, and a spiral groove is formed on the other side of the outer surface of the connecting frame 32.

[0060] As can be seen from the above, it is ensured that during the transportation process, the objects on the transport flat plate 51 will not interfere with or collide with the guide wheel frame 6. The U-shaped structure improves the bearing capacity and stability of the connecting frame 32, and the spiral groove is beneficial to the connection between the connecting nut 34 and the connecting frame 32, realizing the firm connection between the connecting frame 32 and the trailer frame body 1.

[0061] Application example:

[0062] This design is applied to water rescue environments, complex terrain rescue environments, and urban emergency rescue environments. In water rescue scenarios caused by natural disasters such as floods and heavy rains, for example, in urban waterlogging areas where streets are flooded and a large number of trapped people need to be transferred. At this time, rescue personnel need to use inflatable boats for personnel evacuation. This multi-functional rescue transport trailer can quickly reach the scene and use the hoisting mechanism 2 to hoist the inflatable boat into the water, eliminating the need for manual laborious handling or searching for other hoisting equipment, greatly improving the rescue efficiency. In the city, emergencies such as underground pipeline ruptures leading to road collapses and basement waterlogging may occur. It is necessary to use inflatable boats to rescue people trapped in the basement or transport large rescue equipment through the conveying mechanism 5 for emergency rescue operations. This trailer can drive flexibly on urban streets and quickly reach the scene. Its hoisting mechanism 2 meets the requirement of hoisting objects such as inflatable boats into the water; the fixing mechanism 4 ensures the stability and safety of the inflatable boat when placed; the connecting mechanism 3 provides the possibility of quickly replacing functional modules, enabling the trailer to be flexibly adjusted according to the actual situation, transport different types of rescue equipment, and thus quickly respond to various emergencies and carry out rescue work in a timely manner.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional rescue and transportation trailer, characterized in that, Including: Trailer frame body (1); On one side of the top end of the trailer frame body (1), a hoisting mechanism (2) is installed. On both sides of the top end of the trailer frame body (1), two connecting mechanisms (3) are installed. At the top ends of the four connecting mechanisms (3), fixing mechanisms (4) are respectively installed or a transporting mechanism (5) is jointly installed; The hoisting mechanism (2) includes an electric telescopic column (21), a supporting mechanism (22), a rotating motor (23), a hoisting telescopic arm (24) and a winch (25). The electric telescopic column (21) is installed at the top end of the trailer frame body (1) through a bearing. The supporting mechanism (22) is installed on the outer surface of the electric telescopic column (21). The rotating motor (23) is installed at the bottom end of the electric telescopic column (21). The hoisting telescopic arm (24) is installed at the top end of the electric telescopic column (21). The winch (25) is installed on one side of the bottom end of the hoisting telescopic arm (24).

2. The multifunctional rescue and transportation trailer according to claim 1, characterized in that: In the middle of the top end of the trailer frame body (1), three guiding wheel frames (6) are installed. On one side of the outer surface of the trailer frame body (1), a fixing ring (7) is installed. On both sides of the bottom end of the trailer frame body (1), mounting frames (8) are installed. Between the opposite surfaces of the two mounting frames (8), a connecting shaft (9) is jointly installed through a bearing. At both ends of the connecting shaft (9), moving wheels (10) are installed. Protective covers (11) are installed on the outer walls on both sides of the trailer frame body (1).

3. The multifunctional rescue and transportation trailer according to claim 2, characterized in that: The supporting mechanism (22) includes a support frame (221), mounting holes (222), connecting blocks (223), electric push rods (224), a fixing frame (225) and supporting wheels (226). The support frame (221) is installed at the top end of the trailer frame body (1). There are two mounting holes (222), connecting blocks (223), electric push rods (224) and supporting wheels (226). The two mounting holes (222) are respectively opened at the top end and the bottom end of the support frame (221), and the inner walls of the two mounting holes (222) are installed on the outer surface of the electric telescopic column (21) through bearings. The two connecting blocks (223) are installed at the lower parts of the outer walls on both sides of the support frame (221) through movable shafts. The two electric push rods (224) are respectively installed at the top ends of the two connecting blocks (223). The fixing frame (225) is installed between the bottom ends of the two electric push rods (224). The two supporting wheels (226) are both installed on the inner wall of the fixing frame (225) through bearings.

4. A multifunctional rescue and transportation trailer according to claim 3, characterized in that: The support frame (221) is arranged in a trapezoidal structure. The fixing frame (225) is arranged in an E-shaped structure, and the bottom end surface of the fixing frame (225) is higher than the bottom end surface of the supporting wheel (226). The electric telescopic column (21) is arranged in a multi-stage telescopic structure.

5. The multifunctional rescue and transportation trailer according to claim 1, characterized in that: The fixing mechanism (4) includes a fixing frame (41), a driver (42), an adjusting rod (43), a guiding frame (44), a fixing rope (45) and a fixing buckle (46). The fixing frame (41) is installed at the top of the connecting mechanism (3). The driver (42) is installed on the outer wall of the fixing frame (41). The adjusting rod (43) is installed between the inner walls on both sides of the fixing frame (41) through bearings. The guiding frame (44) is installed between the two sides at the top of the adjusting rod (43). The fixing rope (45) is installed in the middle at the top of the adjusting rod (43). The fixing buckle (46) is installed at the other end of the fixing rope (45).

6. The multifunctional rescue and transportation trailer according to claim 5, wherein: The guiding frame (44) includes a rotating shaft (441), an adjusting frame (442), a driving motor (443), an adjusting bracket (444) and a guiding wheel (445). There are two adjusting frames (442) and two adjusting brackets (444). The two adjusting frames (442) are both installed on the outer surface of the rotating shaft (441) through bearings, and the bottom ends of the two adjusting frames (442) are installed at the top of the adjusting rod (43). The driving motor (443) is installed on the upper part of one end of the adjusting frame (442). The two adjusting brackets (444) are respectively installed on both sides of the outer surface of the rotating shaft (441). There are four guiding wheels (445), and the four guiding wheels (445) are respectively installed at both ends of the two adjusting brackets (444) through movable shafts.

7. A multi-functional rescue and transportation trailer according to claim 6, characterized in that: Both the adjusting frame (442) and the fixing frame (41) are set as U-shaped structures. The middle part of the outer surface of the adjusting bracket (444) is set as a concave structure. The fixing rope (45) is set as an elastic rope.

8. A multi-functional rescue and transportation trailer according to claim 1, characterized in that: The connecting mechanism (3) includes a connecting frame (31), a connecting bracket (32), a limiting block (33) and a connecting nut (34). The connecting frame (31) is sleeved on the outer surface of the trailer frame body (1). The connecting bracket (32) is inserted between the inner walls on both sides of the connecting frame (31). There are two limiting blocks (33) and two connecting nuts (34). The two limiting blocks (33) are both installed on one side of the outer surface of the connecting bracket (32). The two connecting nuts (34) are both installed on the other side of the outer surface of the connecting bracket (32).

9. The multifunctional rescue and transportation trailer according to claim 8, wherein: The conveying mechanism (5) includes a conveying flat plate (51), a support rod (52), a hanging point (53), a guiding plate (54), a support pad (55) and an avoidance groove (56). The conveying flat plate (51) is installed at the top end of the connecting frame (31). Four support rods (52) are provided, and the four support rods (52) are respectively installed at the four corners of the top end of the conveying flat plate (51). A plurality of hanging points (53) are provided, and the plurality of hanging points (53) are respectively installed on the upper parts of the outer surfaces of the four support rods (52). The guiding plate (54) is installed at one end of the conveying flat plate (51). Two support pads (55) and two avoidance grooves (56) are provided. The two support pads (55) are respectively installed on both sides of the bottom end of the conveying flat plate (51), and the two avoidance grooves (56) are respectively opened on both sides of the top end of the conveying flat plate (51).

10. A multifunctional rescue and transportation trailer according to claim 9, characterized in that: The top surface of the conveying flat plate (51) is higher than the top surface of the guiding wheel frame (6). The connecting frame (32) is arranged in a U-shaped structure, and a spiral groove is formed on the other side of the outer surface of the connecting frame (32).

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