A stable trailer

Abstract

The utility model provides a kind of towed vehicle of stable driving, it is related to towed vehicle technical field, including towed vehicle chassis and car body, and towed vehicle chassis is detachably connected between car body by bolt, and the top of car body is detachably connected with shielding box by connecting device, it is rotated by driving bidirectional screw rod one and bidirectional screw rod two, bidirectional screw rod one and bidirectional screw rod two will be moved by slider driving connecting rod and fixed block at this time, and it is moved by fixed block driving adjusting plate and movable plate, when movable plate moves, it will drive fixed shell to move, simultaneously drive pressing block, movable block and limit clamp to move, and limit block will extrude limit clamp and extension spring, and make limit clamp move to recess inner wall that is set on limit block, this device reduces the probability that shielding box is displaced, even falls, and reduces the probability that serious safety hazard is caused to rear vehicle, causes traffic accident.

Description

Technical Field

[0001] This utility model relates to the field of trailer technology, and in particular to a trailer with stable driving performance. Background Technology

[0002] A non-powered trailer, also known as a trailer or semi-trailer, is a heavy-duty transport vehicle without its own power unit. It requires a tractor to provide power and traction. This type of trailer is widely used for transporting various goods, especially in long-distance and heavy-duty transport. Stable trailers are an important part of the transportation industry, and their design and construction are designed to ensure good driving stability under various road conditions.

[0003] As described in the invention entitled "A Freight Trailer" disclosed in Publication No. CN219406275U, the trailer is first fixed to the truck by a tow frame. The cover box is placed on top of the trailer body. A rotary motor drives a rotating rod to rotate, which in turn drives a main bevel gear to rotate, which in turn drives a meshing driven bevel gear to rotate. The driven bevel gear then drives a first threaded rod to rotate, which in turn drives a threaded moving plate to move. The moving plate moves on a sliding guide rod, and the movement path of the moving plate is fixed. This causes a clamping plate to move, and a connecting block on the clamping plate moves to insert into a connecting groove, thereby fixing the position of the cover box. This facilitates the installation of the cover box on top of the trailer body to protect it from rain and prevent the cargo from falling off. By activating an electric push rod, a pressure plate is pushed downwards, allowing the protective sponge to contact the cargo and secure it, preventing the cargo from falling off during transportation.

[0004] However, when the above structure is in use, it is fixed by clamping plate and connecting block plug-in connection slot. When the trailer is in motion, it will face high frequency vibration, centrifugal force when turning, and impact from road undulations. The single plug-in structure is prone to loosening and falling out of the connecting block, which will cause the cover box to shift or even fall off, and will cause serious safety hazards to vehicles behind and cause traffic accidents.

[0005] Therefore, it is necessary to provide a new type of stable trailer to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a trailer with stable driving.

[0007] This utility model provides a stable driving trailer, which includes a trailer chassis and a vehicle body. The trailer chassis and the vehicle body are detachably connected by bolts, and a cover box is detachably connected to the top of the vehicle body by a connecting device. The connecting device includes an adjusting component, two movable plates, several fixed housings, several pressing blocks, several limiting blocks, and several limiting components. The adjusting component is rotatably connected to the inner wall of a through hole in the shield box. The two movable plates are respectively fixedly connected to both ends of the adjusting component. The several fixed housings are respectively fixedly connected to both ends of the two movable plates. The several pressing blocks are respectively slidably connected to the inner wall of the through hole in the several fixed housings. Several support plates are respectively fixedly connected to the top of the several pressing blocks. Several uniformly arranged compression springs are fixedly connected to the bottom of the several support plates. The ends of the several compression springs away from the support plates are fixedly connected to one end of the fixed housing. The several limiting blocks are respectively fixedly connected to the four sides of the vehicle body. The several limiting components are respectively slidably connected to both sides of the ends of the several pressing blocks away from the support plates.

[0008] Preferably, the limiting component includes two movable blocks and several telescopic springs. The two movable blocks are slidably connected to both sides of the end of the pressing block away from the support plate, and the ends of the two movable blocks away from the pressing block are respectively fixedly connected to two limiting clamps. One end of each of the several telescopic springs is fixedly connected to the inner wall of the fixed housing, and the ends of the several telescopic springs away from the fixed frame are respectively fixedly connected to the ends of the two limiting clamps away from the movable blocks.

[0009] Preferably, the adjustment assembly includes a drive mechanism, a bidirectional screw, several connecting rods, and several fixing blocks. The drive mechanism is fixedly connected to one side wall of the shielding box via a mounting plate, and one end of the drive mechanism is fixedly connected to one end of the bidirectional screw. The bidirectional screw engages with a bidirectional screw via the drive mechanism. The ends of both the bidirectional screw and the bidirectional screw away from the drive mechanism are rotatably connected to the inner wall of the shielding box. Several sliders are threaded onto the bidirectional screw and the bidirectional screw. One end of each of the connecting rods is hinged to the side wall of the slider. Several fixing blocks are movably connected to the ends of the connecting rods away from the sliders. Two adjustment plates are fixedly connected to the ends of the fixing blocks away from the connecting rods. The two adjustment plates are fixedly connected to one side wall of each of the two movable plates.

[0010] Preferably, the driving mechanism includes a driving component and a driven gear. The driving component is fixedly connected to one side wall of the shield box via a mounting plate, and a driving gear is fixedly connected to the output end of the driving component. The driven gear meshes with one side wall of the driving gear, and the driven gear and the driving gear are respectively fixedly connected to one end of the first bidirectional screw and the second bidirectional screw.

[0011] Preferably, the bottom of the shield box is fixedly connected to two electric telescopic rods, the telescopic ends of the two electric telescopic rods are fixedly connected to pressure plates, and the bottom of the pressure plates is fixedly connected to protective sponges.

[0012] Preferably, the driving component is a servo motor, which is fixedly connected to one side wall of the shield box via a mounting plate, and the output end of the servo motor is fixedly connected to one end of the drive gear.

[0013] Preferably, the two limiting clamps are inclined at one end adjacent to the limiting block.

[0014] Preferably, a tailgate is hinged to one end of the vehicle body near the servo motor.

[0015] Compared with related technologies, the stable trailer provided by this utility model has the following advantages: With the established connection device, when the screen cover needs to be installed, it is first placed on the top of the vehicle body. Then, the servo motor is started. The servo motor drives the two-way screws (one and two) to rotate through the drive and driven gears. At this time, the two-way screws drive the connecting rod and the fixed block through the slider, and drive the adjusting plate and the movable plate through the fixed block. When the movable plate moves, it drives the fixed shell to move, and at the same time drives the pressing block, the movable block, and the limiting clamp to move. The limiting block will squeeze the limiting clamp and the telescopic spring, and move the limiting clamp to the inner wall of the groove opened on the limiting block. This device reduces the probability of the screen cover shifting or even falling off, and reduces the probability of causing serious safety hazards to vehicles behind and causing traffic accidents. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a stable trailer provided by this utility model; Figure 2 for Figure 1 The diagram shows the cross-sectional structure. Figure 3 for Figure 1 The diagram shows the structure of the vehicle body and the connecting device. Figure 4 for Figure 3 The diagram shows the structure of the connecting device. Figure 5 for Figure 4 A cross-sectional view of the connecting device is shown. Figure 6 for Figure 4 A partial structural schematic diagram of the connecting device is shown.

[0017] The following are the labeling elements in the diagram: 1. Trailer chassis; 2. Vehicle body; 3. Movable plate; 4. Fixed outer shell; 5. Pressing block; 6. Limiting block; 7. Support plate; 8. Compression spring; 9. Movable block; 10. Telescopic spring; 11. Limiting clamp; 12. Double-acting screw one; 13. Connecting rod; 14. Fixed block; 15. Double-acting screw two; 16. Slider; 17. Adjusting plate; 18. Driven gear; 19. Driven gear; 20. Electric telescopic rod; 21. Pressure plate; 22. Servo motor; 23. Tailgate; 24. Cover box. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 ,in, Figure 1 A schematic diagram of the structure of a stable trailer provided by this utility model; Figure 2 for Figure 1 The diagram shows the cross-sectional structure. Figure 3 for Figure 1 The diagram shows the structure of the vehicle body and the connecting device. Figure 4 for Figure 3 The diagram shows the structure of the connecting device. Figure 5 for Figure 4 A cross-sectional view of the connecting device is shown. Figure 6 for Figure 4 A partial structural schematic diagram of the connecting device is shown.

[0020] In the specific implementation process, such as Figures 1 to 6As shown, a tailgate 23 is hinged to one end of the vehicle body 2 near the servo motor 22. The trailer chassis 1 and the vehicle body 2 are detachably connected by bolts. A shield box 24 is detachably connected to the top of the vehicle body 2 via a connecting device. Two electric telescopic rods 20 are fixedly connected to the bottom of the shield box. A pressure plate 21 is fixedly connected to the telescopic ends of the two electric telescopic rods 20. A protective sponge is fixedly connected to the bottom of the pressure plate 21. The connecting device includes an adjustment component, two movable plates 3, several fixed housings 4, several pressing blocks 5, several limiting blocks 6, and several limiting components. The adjustment component is rotatably connected to the inner wall of the through hole opened on the shield box 24. Two movable plates 3 are fixedly connected to both ends of the adjustment component, several fixed housings 4 are fixedly connected to both ends of the two movable plates 3, several pressing blocks 5 are slidably connected to the inner walls of the through holes opened on the several fixed housings 4, and several support plates 7 are fixedly connected to the top of the several pressing blocks 5, several uniformly arranged compression springs 8 are fixedly connected to the bottom of the several support plates 7, and the ends of the several compression springs 8 away from the support plates 7 are fixedly connected to one end of the fixed housing 4, several limiting blocks 6 are fixedly connected to the four sides of the vehicle body 2, and several limiting components are slidably connected to both sides of the ends of the several pressing blocks 5 away from the support plates 7; The limiting component includes two movable blocks 9 and several telescopic springs 10. The two movable blocks 9 are slidably connected to both sides of the end of the pressing block 5 away from the support plate 7, and the ends of the two movable blocks 9 away from the pressing block 5 are respectively fixedly connected to two limiting clips 11. One end of each of the several telescopic springs 10 is fixedly connected to the inner wall of the fixed housing 4, and the ends of the several telescopic springs 10 away from the fixed frame are respectively fixedly connected to the ends of the two limiting clips 11 away from the movable blocks 9. It should be noted that the two limit clamps 11 are inclined at one end adjacent to the limit block 6; The adjustment assembly includes a drive mechanism, a bidirectional screw 12, several connecting rods 13, and several fixing blocks 14. The drive mechanism is fixedly connected to one side wall of the shield box 24 via a mounting plate, and one end of the drive mechanism is fixedly connected to one end of the bidirectional screw 12. The bidirectional screw 12 engages with a bidirectional screw 25 via the drive mechanism. The ends of both the bidirectional screw 12 and the bidirectional screw 25 away from the drive mechanism are rotatably connected to the inner wall of the shield box 24. Several sliders 16 are threadedly connected to the bidirectional screw 12 and the bidirectional screw 25 respectively. One end of each connecting rod 13 is hinged to the side wall of the slider 16. Several fixing blocks 14 are movably connected to the ends of the connecting rods 13 away from the sliders 16. Two adjusting plates 17 are fixedly connected to the ends of the fixing blocks 14 away from the connecting rods 13 respectively. The two adjusting plates 17 are fixedly connected to one side wall of each of the two movable plates 3. The drive mechanism includes a drive component and a driven gear 18. The drive component is fixedly connected to one side wall of the shield box 24 via a mounting plate, and the output end of the drive component is fixedly connected to a drive gear 19. The driven gear 18 meshes with one side wall of the drive gear 19, and the driven gear 18 and the drive gear 19 are respectively fixedly connected to one end of the bidirectional screw 12 and the bidirectional screw 15. It should be noted that the driving component is a servo motor 22. The servo motor 22 driving component is fixedly connected to one side wall of the shield box 24 through a mounting plate, and the output end of the servo motor 22 is fixedly connected to one end of the drive gear 19.

[0021] The working principle of this utility model is as follows: When it is necessary to install the shield box, first place the shield box on the top of the vehicle body 2, and then start the servo motor 22. The servo motor 22 will drive the bidirectional screw 12 and bidirectional screw 25 to rotate through the active gear 19 and the driven gear 18. At this time, the bidirectional screw 12 and bidirectional screw 25 will drive the connecting rod 13 and the fixed block 14 to move through the slider 16, and drive the adjusting plate 17 and the movable plate 3 to move through the fixed block 14. When the movable plate 3 moves, it will drive the fixed shell 4 to move, and at the same time drive the pressing block 5, the movable block 9 and the limiting clamp 11 to move. The limiting block 6 will squeeze the limiting clamp 11 and the telescopic spring 10, and move the limiting clamp 11 to the inner wall of the groove opened on the limiting block 6.

[0022] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A stable towing vehicle, characterized in that It includes a trailer chassis (1) and a vehicle body (2), wherein the trailer chassis (1) and the vehicle body (2) are detachably connected by bolts, and a shield box (24) is detachably connected to the top of the vehicle body (2) by a connecting device. The connecting device includes an adjusting component, two movable plates (3), several fixed housings (4), several pressing blocks (5), several limiting blocks (6), and several limiting components. The adjusting component is rotatably connected to the inner wall of the through hole opened on the shield box (24). The two movable plates (3) are respectively fixedly connected to both ends of the adjusting component. The several fixed housings (4) are respectively fixedly connected to both ends of the two movable plates (3). The several pressing blocks (5) are respectively slidably connected to the inner wall of the through hole opened on the several fixed housings (4). The top of the several pressing blocks (5) is respectively fixedly connected to several support plates (7). The bottom of the several support plates (7) is fixedly connected to several uniformly arranged compression springs (8). The end of the several compression springs (8) away from the support plates (7) is fixedly connected to one end of the fixed housing (4). The several limiting blocks (6) are respectively fixedly connected to the four sides of the vehicle body (2). The several limiting components are respectively slidably connected to both sides of the end of the several pressing blocks (5) away from the support plates (7).

2. The stable towing vehicle according to claim 1, characterized in that The limiting component includes two movable blocks (9) and several telescopic springs (10). The two movable blocks (9) are slidably connected to both sides of the end of the pressing block (5) away from the support plate (7), and the ends of the two movable blocks (9) away from the pressing block (5) are respectively fixedly connected to two limiting clips (11). One end of each of the several telescopic springs (10) is fixedly connected to the inner wall of the fixed outer shell (4), and the ends of the several telescopic springs (10) away from the fixed frame are respectively fixedly connected to the ends of the two limiting clips (11) away from the movable blocks (9).

3. The stable towing vehicle of claim 2, wherein, The adjustment assembly includes a drive mechanism, a bidirectional screw (12), several connecting rods (13), and several fixing blocks (14). The drive mechanism is fixedly connected to one side wall of the shielding box (24) via a mounting plate, and one end of the drive mechanism is fixedly connected to one end of the bidirectional screw (12). The bidirectional screw (12) is engaged with a bidirectional screw (15) via the drive mechanism. The ends of both the bidirectional screw (12) and the bidirectional screw (15) away from the drive mechanism are rotatably connected inside the shielding box (24). The wall, and the two-way screw one (12) and the two-way screw two (15) are respectively threaded with a number of sliders (16), one end of the several connecting rods (13) is respectively hinged to the side wall of the slider (16), and the several fixed blocks (14) are respectively movably connected to the end of the connecting rod (13) away from the slider (16), and the ends of the several fixed blocks (14) away from the connecting rod (13) are respectively fixedly connected to two adjusting plates (17), and the two adjusting plates (17) are respectively fixedly connected to the side wall of one side of the two movable plates (3).

4. The stable towing vehicle of claim 3, wherein, The driving mechanism includes a driving component and a driven gear (18). The driving component is fixedly connected to one side wall of the shield box (24) via a mounting plate, and the output end of the driving component is fixedly connected to a driving gear (19). The driven gear (18) meshes with one side wall of the driving gear (19), and the driven gear (18) and the driving gear (19) are respectively fixedly connected to one end of the first bidirectional screw (12) and the second bidirectional screw (15).

5. The stable towing vehicle of claim 4, wherein, The bottom of the shield box (24) is fixedly connected to two electric telescopic rods (20), and the telescopic ends of the two electric telescopic rods (20) are fixedly connected to pressure plates (21). The bottom of the pressure plates (21) is fixedly connected to protective sponge.

6. The stable towing vehicle of claim 5, wherein, The driving component is a servo motor (22). The servo motor (22) driving component is fixedly connected to one side wall of the shield box (24) through a mounting plate, and the output end of the servo motor (22) is fixedly connected to one end of the drive gear (19).

7. The stable towing vehicle of claim 6, wherein, The two limiting clamps (11) are inclined at one end adjacent to the limiting block (6).

8. The stable towing vehicle of claim 7, wherein, The tailgate (23) is hinged to one end of the vehicle body (2) near the servo motor (22).

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