A center-axle vehicle transport trailer with a multifunctional hydraulic tailgate

Abstract

The utility model relates to the technical field of middle axle vehicle transportation equipment, and disclose a kind of middle axle vehicle transportation trailer with multifunctional hydraulic tailgate, including vehicle transportation car, upper deck located above vehicle transportation car, and tailgate located at the tail of vehicle transportation car, tailgate is connected with the tail of vehicle transportation car by drive connecting piece, and tailgate tail is equipped with length compensator.Tailgate includes symmetrically arranged ladder, one end of two ladders away from vehicle transportation car is connected by first connecting cross bar, first sliding slot is equipped in the inner wall of the both sides of ladder bottom, and first connecting shaft hole is opened through in one end of two ladders close to the tail of vehicle transportation car;Vehicle transportation car tail corresponds each ladder side, and first connecting shaft hole is matched with the first rotating shaft of first lug plate connection. The trailer of the application is adapted to a variety of vehicle transportation, has high space utilization, compensator reduces gradient, is adapted to low chassis car, tailgate and guardrail form protection, and transportation safety is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of center-axle vehicle transport equipment, specifically a center-axle vehicle transport trailer with a multi-functional hydraulic tailgate. Background Technology

[0002] In the vehicle transportation industry, center-axle vehicle transport trailers have become a commonly used transportation tool due to their lightweight body with rod and frame structures and their design with two loading platforms. However, traditional ladder trailers have obvious drawbacks: when loading and unloading low-chassis vehicles, the loading angle is large, making operation inconvenient and posing safety hazards; the driver's manual pulling of the ramp is labor-intensive; the rear door protection and loading flexibility are insufficient, which can easily lead to damage to the vehicle; they are difficult to adapt to diverse transportation needs, limiting the improvement of efficiency and safety.

[0003] For example, a center-axle finished vehicle transport trailer with application number 201822188302.2 includes a lower cargo platform with two front pillars at the front, a running gear assembly in the middle, and two rear pillars at the rear; a towing device is provided at the front end of the lower cargo platform, with outriggers between the towing device and the lower cargo platform, and a rear ramp is provided at the rear end of the lower cargo platform; a lower parking platform extends from the front end to the rear ramp on the lower cargo platform; both the front and rear pillars are equipped with sliders and locking devices, and an upper cargo platform is provided on the upper part of the front and rear pillars, connected to the sliders; a hydraulic assembly is also provided on the lower cargo platform, the hydraulic assembly including a control valve, a front pillar cylinder connected to the slider on the front pillar, a lower cylinder connected to the front of the lower parking platform, and a rear cylinder connected to the rear of the upper cargo platform.

[0004] One of the aforementioned patents describes a center-axle finished vehicle transport trailer. When using the rear ramp, it is removed from the guide groove at the rear end of the lower cargo platform and made to contact the ground at a certain angle. After use, the rear ramp is retracted. The rear ramp cannot be raised to close and serves as a protective rear door, protecting the loaded vehicle and preventing rear-end collisions. However, its loading capacity is limited.

[0005] Therefore, we propose a center-axle vehicle transport trailer with a multi-functional hydraulic tailgate to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a center-axle vehicle transport trailer with a multi-functional hydraulic tailgate, in order to solve the problems mentioned in the background art that the tailgate of traditional vehicle transport trailers only serves as a loading and unloading ramp and cannot be raised for rear door protection, and the tailgate does not have length compensation, which is not conducive to loading vehicles with low chassis.

[0007] This utility model provides the following technical solution: A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate includes a vehicle transport vehicle, an upper cargo platform located above the vehicle transport vehicle, and a tailgate located at the rear of the vehicle transport vehicle. The tailgate is connected to the rear of the vehicle transport vehicle via a drive connector, and the tailgate is provided with a length compensation component at its rear. Hydraulic lifts are symmetrically connected to the top of the outer edges on both sides of the front of the vehicle transport vehicle, and fixed columns are connected to the top of the outer edges on both sides of the rear. Insertion holes are evenly distributed on the fixed columns. The bottom of the front side of the upper cargo platform is fixed to the top of the hydraulic lifts. Insertion rods are provided on the outer walls on both sides of the rear side, and the insertion rods are inserted into the insertion holes of the fixed columns that are close to them.

[0008] Preferably, the tail plate includes symmetrically arranged ladders, with the ends of the two ladders away from the vehicle transport vehicle connected by a first connecting crossbar. The inner walls on both sides of the bottom of the ladders are provided with first sliding grooves, and the ends of the two ladders near the rear of the vehicle transport vehicle are provided with a first connecting shaft hole. The rear of the vehicle transport vehicle is connected to a first rotating shaft that matches the first connecting shaft hole via a first ear plate on one side of each ladder.

[0009] Preferably, the drive connector includes a fixed crossbar, a connecting rod, and an auxiliary steel wire rope. The fixed crossbar is connected to the bottom of the ladder. A first U-shaped fixing seat is provided on the outer wall of the ladder at both ends of the fixed crossbar. A second rotating shaft and a third rotating shaft are arranged parallel inside the first U-shaped fixing seat. One end of the connecting rod is rotatably connected to the second rotating shaft, and the other end is rotatably connected to the second U-shaped fixing seat through a fourth rotating shaft. The second U-shaped fixing seat is connected to the outer wall below the fixing column at the rear of the vehicle. One end of the auxiliary steel wire rope is rotatably connected to the third rotating shaft, and the other end is connected to a steel wire drive disc located inside the fixing column.

[0010] Preferably, the length compensation component includes a compensation plate, which is slidably connected in a first groove below the two ladders. The two compensation plates are connected near their outer edges by a second crossbar, and a ramp is provided in the middle of the compensation plate.

[0011] Preferably, an electric telescopic rod is embedded parallel inside the first slide groove, and the output end of the electric telescopic rod is connected to the end of the compensation plate inside the first slide groove.

[0012] Preferably, the upper cargo platform is equipped with protective railings near the top of the longer sides on both sides.

[0013] This utility model has the following beneficial effects: 1. This application utilizes a hydraulic lift in conjunction with a fixed column and a connecting rod. The upper cargo platform can be flexibly adjusted according to the height of the transport vehicle. The hydraulic lift can easily adjust the height of the front end of the upper cargo platform. The connecting rod on the rear side is inserted into connecting holes of different heights. The rear side is then connected to the steel wire drive disc inside the fixed column via a steel cable. This adapts to the transport of commercial vehicles of different heights, improves the trailer's adaptability to loading various vehicles, and optimizes space utilization.

[0014] 2. The hydraulic tailgate's ladder, drive connector, length compensation component, and other structural components work together. The ladder is connected to the rear of the vehicle via a rotating shaft. The drive connector enables stable lifting and angle adjustment of the tailgate. The length compensation component can flexibly compensate for the tailgate length, allowing the tailgate structure to adapt to different loading and unloading scenarios and enhancing the overall structural flexibility and functionality.

[0015] 3. The length compensation piece can adjust the tailgate length and climbing angle. When the compensation plate slides out, it works in conjunction with the climbing tilt plate to reduce the loading slope, allowing low-chassis vehicles to be loaded and unloaded smoothly. This solves the problem of traditional ladders having large angles and making it difficult to load and unload low-chassis vehicles, and expands the range of trailer transport vehicle types.

[0016] 4. The hydraulic tailgate can be raised after loading, forming a front and rear protective structure in conjunction with the upper cargo platform guardrail. The tailgate acts as a rear door, blocking possible rear collisions, while the guardrail prevents the vehicle from skidding and falling off, reducing the risk of damage during vehicle transportation and ensuring transportation safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the hydraulic tailplate structure of this utility model.

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of area A in the middle.

[0020] Figure 4 This is a schematic diagram of the connection structure between the drive connector and the hydraulic tailplate of this utility model.

[0021] Figure 5 This is a schematic diagram of the length compensation component of this utility model.

[0022] Figure 6 This is a schematic diagram of the side structure of the compensation plate and ladder of this utility model.

[0023] In the diagram: 1. Vehicle transport vehicle; 11. Upper cargo platform; 111. Connecting rod; 112. First ear plate; 113. First rotating shaft; 114. Guardrail; 12. Fixed column; 121. Connecting hole; 13. Hydraulic lift; 2. Tail plate; 21. Ladder; 211. First connecting crossbar; 212. First connecting shaft hole; 213. First slide groove; 3. Drive connector; 31. Fixed crossbar; 32. Connecting rod; 33. Auxiliary wire rope; 34. First U-shaped fixed seat; 341. Second rotating shaft; 342. Third rotating shaft; 343. Fourth rotating shaft; 35. Second U-shaped fixed seat; 4. Length compensation component; 41. Compensation plate; 411. Inclined ramp; 42. Second crossbar. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 , Figure 2 Figure 6 As shown, a center-axle vehicle transport trailer with a multi-functional hydraulic tailgate includes a vehicle transport vehicle 1, an upper platform 11 located above the vehicle transport vehicle 1, and a tailgate 2 located at the rear of the vehicle transport vehicle 1. The tailgate 2 is connected to the rear of the vehicle transport vehicle 1 via a drive connector 3, and a length compensation component 4 is provided at the rear of the tailgate 2. The upper platform 11 has guardrails 114 near the top of the longer sides on both sides. Hydraulic lifters 13 are symmetrically connected to the top of the outer edges on both front sides of the vehicle transport vehicle 1, and fixed posts 12 are connected to the top of the outer edges on both rear sides. Insertion holes 121 are evenly distributed on the fixed posts 12. The bottom of the front side of the upper platform 11 is fixed to the top of the hydraulic lifters 13, and insertion rods 1 are provided on the outer walls on both rear sides. 11. The plug-in rod 111 is inserted into the plug-in hole 121 of the nearby fixed column 12. Through the cooperation of the hydraulic lift 13, the fixed column 12, and the plug-in rod 111, the upper platform 11 can be flexibly adjusted according to the height of the transport vehicle. The hydraulic lift 13 can conveniently adjust the height of the front end of the upper platform. The rear plug-in rod 111 is inserted into plug-in holes of different heights. The rear is then connected to the steel wire drive disc inside the fixed column 12 through a steel cable. When the plug-in rod 111 is separated from the plug-in hole 121, the upper platform 11 is connected through the hydraulic lift 13 and the external steel cable, which improves protection, adapts to the transport of commercial vehicles of different heights, improves the trailer's adaptability to loading various vehicles, and optimizes space utilization.

[0026] When it is necessary to adjust the loading height between the upper cargo platform 11 and the vehicle transport vehicle 1, the plug rod 111 is separated from the plug hole 121. At this time, the upper cargo platform 11 is connected to the steel wire drive plate inside the hydraulic lift 13 and the fixed column 12. At this time, the steel wire drive plate and the hydraulic lift 13 are driven simultaneously. The hydraulic lift 13 is lifted, and the steel wire drive plate pulls the steel cable connected to the upper cargo platform 11 to lift it up. This adapts to the transportation of commercial vehicles of different heights, improves the trailer's loading adaptability to various vehicles, and optimizes space utilization.

[0027] Furthermore, after the hydraulic tailgate 2 is loaded and raised, it combines with the upper cargo platform guardrail 114 to form a front and rear protective structure. The tailgate acts as a rear door to block possible collisions from behind, while the guardrail prevents the vehicle from skidding and falling off, reducing the risk of damage during vehicle transportation and ensuring transportation safety.

[0028] Please see Figure 1 - Figure 4 As shown, the tailgate 2 includes symmetrically arranged ladders 21. The ends of the two ladders 21 away from the vehicle transport vehicle 1 are connected by a first connecting crossbar 211. The inner walls on both sides of the bottom of the ladders 21 are provided with first sliding grooves 213. The ends of the two ladders 21 near the rear of the vehicle transport vehicle 1 are provided with first connecting shaft holes 212. The rear of the vehicle transport vehicle 1 is connected to one side of each ladder 21 by a first ear plate 112 and a first rotating shaft 113 that matches the first connecting shaft hole 212. The ladders 21 are connected to the rear of the vehicle through the first rotating shaft 113, which can be flexibly rotated to adjust the angle, providing a basic support structure for vehicle loading and unloading. The structure is simple and stable, and it is easy to cooperate with subsequent drive connecting parts and length compensation parts to achieve multi-functional operation.

[0029] The drive connector 3 includes a fixed crossbar 31, a connecting rod 32, and an auxiliary steel wire rope 33. The fixed crossbar 31 is connected to the bottom of the ladder 21. A first U-shaped fixing seat 34 is provided on the outer wall of the ladder 21 at both ends of the fixed crossbar 31. A second rotating shaft 341 and a third rotating shaft 342 are arranged parallel to each other inside the first U-shaped fixing seat 34. One end of the connecting rod 32 is rotatably connected to the second rotating shaft 341, and the other end is rotatably connected to the second U-shaped fixing seat 35 via the fourth rotating shaft 343. The second U-shaped fixing seat 35 and... The lower outer wall of the fixed column 12 at the rear of the vehicle is connected to the auxiliary steel wire rope 33. One end of the auxiliary steel wire rope 33 is rotatably connected to the third rotating shaft 342, and the other end is connected to the steel wire drive disc located inside the fixed column 12. The fixed crossbar 31, connecting rod 32, auxiliary steel wire rope 33 and other components work together to achieve stable lifting and angle adjustment of the tailgate 2 by using the rotation of multiple rotating shafts. This allows the tailgate to flexibly change position according to loading and unloading needs, improving operational convenience and structural stability, and ensuring reliable support and smooth movement of the tailgate during loading and unloading.

[0030] Please see Figure 1 , Figure 5 and Figure 6As shown, the length compensation component 4 includes a compensation plate 41, which is slidably connected to the first slide groove 213 below the two ladders 21. The two compensation plates 41 are connected near their outer edges by a second crossbar 42. A ramp inclined plate 411 is provided in the middle of the compensation plate 41. An electric telescopic rod is embedded parallel inside the first slide groove 213. The output end of the electric telescopic rod is connected to the end of the compensation plate 41 inside the first slide groove 213. The side of the compensation plate 41 has a triangular structure (see reference). Figure 5 and Figure 6 (In conjunction with the ramp 411, it can reduce the loading slope and adapt to low chassis vehicles;) The electric telescopic rod drives the compensation plate to slide within the first slide groove 213. When extended, it works in conjunction with the ramp tilting plate 411 to reduce the loading slope, making it suitable for low-chassis vehicles to load and unload smoothly. This solves the loading and unloading problems caused by the large angle of traditional ramps and expands the range of trailer transport vehicle types. At the same time, the compensation plate can be flexibly extended and retracted when not in use, without occupying extra space and optimizing the practicality of the tailgate structure.

[0031] During operation, if the vehicles to be loaded need to be placed in layers, first check whether the height of the upper loading platform 11 is suitable. If the height is not suitable, pull out the plug rod 111 on the rear side of the upper loading platform 11 from the plug hole 121 of the fixing column 12; simultaneously start the hydraulic lift 13 and the wire drive plate inside the fixing column 12. The hydraulic lift 13 lifts the front end of the upper loading platform 11, and the wire drive plate pulls the steel cable to lift the rear end of the upper loading platform 11 until it is adjusted to a height that can accommodate the vehicles to be transported; reinsert the plug rod 111 into the plug hole 121 of the corresponding height and fix the upper loading platform 11. Activate the hydraulic tailgate 2. The hydraulic rod at the bottom of the tailgate 2, which is connected to the vehicle, lowers the steel wire drive disc inside the fixed column 12. This, combined with the rotation of the connecting rod 32, pulls the auxiliary steel wire rope 33 down, causing the ladder 21 to rotate downwards around the first pivot 113 under the drive of the hydraulic rod until the ladder 21 forms a gentle angle suitable for loading. If the vehicle to be loaded is a low-chassis vehicle, activate the electric telescopic rod in the ladder 21's groove to extend the compensation plate 41. Utilizing the triangular structure of the compensation plate 41 and the inclined ramp 411, the loading slope is further reduced. The vehicle to be loaded smoothly drives into the ladder 21 (with the extended compensation plate 41). Vehicles to be loaded on the lower level are parked on the lower platform of the vehicle transport vehicle 1. Vehicles on the top of the upper platform 11 are hoisted. After all vehicles are stopped, they are secured to the platform using straps and other tools, completing the loading process.

[0032] This application features an adjustable upper cargo platform 11 and a rotatable and telescopically compensating hydraulic tailgate 2, allowing the trailer to accommodate vehicles of different heights and chassis heights. This significantly improves the loading adaptability to various vehicles, optimizes space utilization, and meets complex transportation needs. Furthermore, by using the auxiliary steel cable 33, the hydraulic tailgate can be laid flat, allowing for the independent loading of a single vehicle, thus increasing loading capacity.

[0033] Hydraulic drive replaces manual operation, reducing the driver's labor intensity; length compensation component 4 reduces the loading slope, making loading and unloading of low-chassis vehicles smoother; drive connection component 3 ensures stable tailgate movement. From the perspective of operation mode and structural design, loading and unloading convenience and safety are improved.

[0034] The guardrail 114 of the upper cargo platform 11 works in conjunction with the hydraulic tailgate 2 that can be raised as a rear door to protect the transport vehicle in all directions, reduce damage caused by collisions and skidding, and ensure the safety of transporting the vehicles.

[0035] Through the coordinated operation of various structures, space can be made more efficient within the compliant size range, increasing the number of vehicles transported in a single trip and enhancing the loading capacity of trailers, thereby improving transportation efficiency and economic benefits.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate, comprising a vehicle transport vehicle (1), an upper cargo platform (11) located above the vehicle transport vehicle (1), and a tailgate (2) located at the rear of the vehicle transport vehicle (1), characterized in that: The tail plate (2) is connected to the rear of the vehicle transport vehicle (1) via a drive connector (3), and the tail plate (2) is provided with a length compensation component (4) at the rear. The vehicle transport vehicle (1) has hydraulic lifts (13) symmetrically connected to the top of the outer edges on both sides of the front side, and fixed columns (12) connected to the top of the outer edges on both sides of the rear side. The fixed columns (12) have evenly distributed insertion holes (121). The bottom of the front side of the upper cargo platform (11) is fixed to the top of the hydraulic lift (13), and the outer walls on both sides of the rear side are provided with insertion rods (111). The insertion rods (111) are inserted into the insertion holes (121) of the fixed columns (12) that are close to them.

2. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate according to claim 1, characterized in that: The tail plate (2) includes symmetrically arranged ladders (21). The ends of the two ladders (21) away from the vehicle transport vehicle (1) are connected by a first connecting crossbar (211). The inner walls of the bottom sides of the ladders (21) are provided with first sliding grooves (213). The ends of the two ladders (21) near the tail of the vehicle transport vehicle (1) are provided with a first connecting shaft hole (212). The tail of the vehicle transport vehicle (1) is connected to a first rotating shaft (113) that matches the first connecting shaft hole (212) through a first ear plate (112) on one side of each ladder (21).

3. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate according to claim 2, characterized in that: The drive connector (3) includes a fixed crossbar (31), a connecting rod (32), and an auxiliary steel wire rope (33). The fixed crossbar (31) is connected to the bottom of the ladder (21). A first U-shaped fixed seat (34) is provided on the outer wall of the ladder (21) at both ends of the fixed crossbar (31). A second rotating shaft (341) and a third rotating shaft (342) are arranged in parallel inside the first U-shaped fixed seat (34). One end of the connecting rod (32) is rotatably connected to the second rotating shaft (341), and the other end is rotatably connected to the second U-shaped fixed seat (35) through the fourth rotating shaft (343). The second U-shaped fixed seat (35) is connected to the lower outer wall of the fixed column (12) at the rear of the vehicle. One end of the auxiliary steel wire rope (33) is rotatably connected to the third rotating shaft (342), and the other end is connected to the steel wire drive disc located inside the fixed column (12).

4. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate according to claim 3, characterized in that: The length compensation component (4) includes a compensation plate (41), which is slidably connected in the first slide groove (213) below the two ladders (21). The two compensation plates (41) are connected near the outer edge by a second crossbar (42). The middle part of the compensation plate (41) is provided with a climbing inclined plate (411).

5. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate according to claim 4, characterized in that: An electric telescopic rod is embedded in parallel inside the first slide groove (213), and the output end of the electric telescopic rod is connected to the end of the compensation plate (41) inside the first slide groove (213).

6. A center-axle vehicle transport trailer with a multi-functional hydraulic tailgate according to claim 1, characterized in that: The upper cargo platform (11) is equipped with guardrails (114) near the top of the longer sides on both sides.

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