Intelligent lifting trailer

Abstract

An intelligent lifting trailer comprises a trailer frame, a traction connecting piece is installed at the front end of the trailer frame and used for being connected with a tractor, two wheel supporting shafts are arranged on the trailer frame and arranged side by side in the front-back direction, the left side and the right side of the trailer frame are each provided with two wheel assemblies, and the four wheel assemblies correspond to the two ends of the two wheel supporting shafts; in conclusion, the lifting of the frame is controlled by the lifting oil cylinders in the four groups of wheel assemblies, so that the height of the frame is flexibly adjusted, and a towed vehicle is convenient to load and unload; fault safety protection is further arranged, when an oil supply system breaks down, the limiting cover, the inductance proximity sensor, the pin and other parts are used for preventing the situation that a piston rod is excessively contracted to make a vehicle frame too low and make contact with the ground, a warning lamp is triggered to remind a driver to handle in time, and safety under the fault condition is enhanced. The adaptability and comfort of the trailer are improved, the safety performance is remarkably enhanced, and remarkable progress is brought to the trailer industry.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailers, and in particular relates to an intelligent lifting trailer. Background Art

[0002] A trailer is a vehicle used to tow cars, and is often used for towing operations on highways and urban roads. Generally, trailers on the market are composed of a chassis, a lifting device, a lifting and traction device, a hydraulic system, an electronic control system, a vehicle body and a tool box, etc., to complete multiple functions such as lifting, pulling and lifting and traction.

[0003] Currently, vehicles are usually loaded into trailers by lifting, pulling or lifting. The above methods are not only time-consuming and labor-intensive, but also easily cause damage to the towed wheels. In addition, when the trailer passes through uneven roads during driving, there is a risk of collision with the bottom of the vehicle, resulting in poor driving stability and safety. Utility Model Content

[0004] The utility model aims to provide an intelligent lifting trailer, which solves the technical problems that the existing trailer method is laborious and time-consuming, and there is a risk of collision with the road surface when the trailer is traveling on a sloping or uneven road surface.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An intelligent lifting trailer comprises a frame, a traction connection piece is installed at the front end of the frame, the traction connection piece is used to connect a tractor, two wheel support shafts are arranged on the frame, the two wheel support shafts are arranged side by side front and back, two sets of wheel assemblies are respectively arranged on the left and right sides of the frame, and the four sets of wheel assemblies correspond to the two ends of the two wheel support shafts;

[0007] The two sets of wheel assemblies on the same side of the frame are installed symmetrically front and rear. The wheel assembly located on the rear side includes a swing arm, a wheel and a cylinder seat box. The lower rear end of the swing arm is hinged to the end of the wheel support shaft, and the wheel is installed at the front end of the swing arm. The cylinder seat box is fixedly installed on the side of the frame and the cylinder seat box is located behind the swing arm. A movable plate is installed in the cylinder seat box through a rotating shaft, and the movable plate can swing back and forth around the rotating shaft. A first mounting seat is installed at the upper rear end of the swing arm, and a lifting cylinder is installed between the upper end of the movable plate and the first mounting seat. Two sets of supporting shock absorbers are installed between the upper end of the movable plate and the rear end inner wall of the cylinder seat box, and two sets of shock-absorbing springs are installed between the lower end of the movable plate and the front end inner wall of the cylinder seat box.

[0008] Furthermore, a movable connecting piece is provided between the traction connecting piece and the front end of the frame, the rear end of the movable connecting piece is connected to the front end of the frame through a pin shaft, a second mounting seat is installed on the movable connecting piece, and a traction shock-absorbing oil cylinder is installed between the second mounting seat and the front end of the frame;

[0009] A row of mounting holes is arranged at the front of the movable connecting piece, and the traction connecting piece is installed in two of the mounting holes through two bolts.

[0010] Furthermore, the intelligent lifting trailer further includes a master controller, a warning light and two sets of limit protection components, the two sets of limit protection components are respectively arranged on the first mounting seat and the second mounting seat; the limit protection components include a limit cover, an inductive proximity sensor and a pin;

[0011] The piston rod end of the lifting oil cylinder is installed on the first mounting seat through the hinge shaft, the limit cover is arranged on the piston rod end of the lifting oil cylinder, and one end of the limit cover is arranged on the hinge shaft, the limit cover can rotate around the hinge shaft, the limit cover is a top-blocked and bottom-open structure, the other end of the limit cover corresponds to the cylinder end of the lifting oil cylinder, the inductive proximity sensor is installed on the outer wall of the cylinder end of the lifting oil cylinder, the pin can be inserted into the limit cover, and the pin is located below the piston rod end of the lifting oil cylinder;

[0012] Another set of limit protection components is installed on the second mounting base in the same way; the main controller is connected with the warning light and the inductive proximity sensor.

[0013] Furthermore, the intelligent lifting trailer also includes an electromagnetic brake system and a hand brake system. The electromagnetic brake system is used to control the brakes of the wheels on the tractor and the frame, and the hand brake system is used to control the brakes of the wheels.

[0014] Furthermore, a slope plate is provided at the rear end of the frame. The slope plate is a triangular structure. The front end of the slope plate is installed at the rear end of the frame through a hinge. The front and rear left and right sides of the slope plate are correspondingly connected to the left and right sides of the rear end of the frame with basket screws.

[0015] Furthermore, a signal light is provided at the bottom of the slope plate, and the signal light is detachably mounted at the bottom of the slope plate.

[0016] Furthermore, a rectangular groove is provided at the bottom of the slope plate, a channel steel is fixed in the rectangular groove, a mounting tube is fixed on the channel steel, a notch is provided at the end of the mounting tube, and the notch consists of a vertical hole and a circular hole; a bracket is fixed on the signal light, a round tube is passed through the bracket, the round tube can be pulled out from the bracket, and the round tube can be passed into the circular hole of the mounting tube, and an aluminum alloy seat tube clamp is also provided at the end of the mounting tube.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the utility model controls the lifting and lowering of the frame through the lifting cylinders in the four sets of wheel assemblies, realizes flexible adjustment of the frame height, is convenient for loading and unloading the towed vehicle, and can ensure the smooth loading or unloading of the vehicle, especially when the terrain is uneven, and the wheel assembly includes a supporting shock absorber and a shock absorbing spring, which effectively filters high-frequency and low-amplitude vibrations and absorbs large-amplitude and low-frequency impacts, greatly improving the stability and passenger comfort during driving; the utility model is also provided with fault safety protection, when the oil supply system fails, the limit cover, the inductive proximity sensor and the pin and other components are used to prevent the piston rod from over-contracting and causing the frame to contact the ground too low, triggering the warning light to prompt the driver to deal with it in time, thereby enhancing the safety in the event of a fault; the slope plate facilitates the smooth entry of the vehicle, and the quick installation structure of the signal light ensures the visibility of the rear vehicle during loading and unloading, thereby improving the safety of the operation; in short, the utility model not only improves the adaptability and comfort of the trailer, but also significantly enhances the safety performance, bringing significant progress to the trailer industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural schematic diagram of an intelligent lifting trailer of the utility model;

[0020] Figure 2 This is a top view of an intelligent lifting trailer of the utility model;

[0021] Figure 3 is a structural schematic diagram of a wheel assembly;

[0022] Figure 4 is a top view of the wheel assembly;

[0023] Figure 5 This is a schematic diagram of the installation of the limit protection component;

[0024] Figure 6 It is a schematic diagram of the structure of the limiting cover;

[0025] Figure 7 This is a schematic diagram of the installation of the slope plate;

[0026] Figure 8 This is a schematic diagram of the installation of a signal light. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The present invention is further described in detail below in conjunction with the embodiments.

[0029] A specific embodiment of an intelligent lifting trailer provided by the utility model:

[0030] like Figure 1-4 As shown, an intelligent lifting trailer includes a frame 1, a traction connection member 2 is installed at the front end of the frame 1, and the traction connection member 2 is used to connect a tractor. Two wheel support shafts 3 are arranged on the frame 1, and the two wheel support shafts 3 are arranged side by side front and back. Two sets of wheel assemblies 4 are respectively arranged on the left and right sides of the frame 1, and the four sets of wheel assemblies 4 correspond to the two ends of the two wheel support shafts 3;

[0031] The two sets of wheel assemblies 4 on the same side of the frame 1 are installed symmetrically front and rear. Figure 3 and Figure 4 As shown, the wheel assembly 4 located at the rear side includes a swing arm 5, a wheel 6 and a cylinder seat box 7. The lower rear end of the swing arm 5 is hinged to the end of the wheel support shaft 3, and the wheel 6 is installed at the front end of the swing arm 5. The cylinder seat box 7 is fixedly installed on the side of the frame 1 and the cylinder seat box 7 is located behind the swing arm 5. A movable plate 9 is installed in the cylinder seat box 7 through a rotating shaft 8, and the movable plate 9 can swing back and forth around the rotating shaft 8. A first mounting seat 10 is installed at the upper rear end of the swing arm 5, and a lifting cylinder 11 is installed between the upper end of the movable plate 9 and the first mounting seat 10. Two groups of supporting shock absorbers 12 are installed between the upper end of the movable plate 9 and the rear end inner wall of the cylinder seat box 7, and two groups of shock-absorbing springs 13 are installed between the lower end of the movable plate 9 and the front end inner wall of the cylinder seat box 7.

[0032] When the intelligent lifting trailer of this embodiment is in use, it is connected to the tractor in front through the traction connection part 2, and the lifting and lowering of the frame 1 is completed by controlling the lifting cylinders 11 of the four sets of wheel assemblies 4. For example, when it is necessary to load the towed wheels 6 onto the frame 1, the height of the frame 1 can be lowered, the four sets of lifting cylinders 11 can be controlled to release oil, and the piston rods of the lifting cylinders 11 are retracted. During the retraction process, the swing arm 5 is pulled to make the swing arm 5 rotate around the wheel axle of the wheel 6, and the wheel support shaft 3 descends. Finally, the frame 1 follows and descends close to the ground. At this time, the towed wheels 6 can be loaded onto the frame 1 through the road surface. The method of "loading the frame 1" can be active driving or pulling by a traction device. Then the frame 1 is raised, and the lifting cylinders 11 are used. The piston rod extends out to push the swing arm 5 to rotate around the axle of the wheel 6, and the wheel support shaft 3 is pulled up to a certain height together with the frame 1; in this embodiment, a shock-absorbing spring 13 and a supporting shock absorber 12 are further arranged before and after the installation movable plate 9 of the lifting cylinder 11. During the movement of the trailer, the vibration from the road surface is first transmitted to the swing arm 5 through the wheel 6, and then transmitted to the lifting cylinder 11 by the swing arm 5. The lifting cylinder 11 is connected to the supporting shock absorber 12 and the shock-absorbing spring 13 through the movable plate 9, wherein the supporting shock absorber 12 is responsible for filtering high-frequency, low-amplitude vibrations, and the shock-absorbing spring 13 is used to absorb and offset large-amplitude, low-frequency impacts, thereby ensuring the stability of the trailer during driving and the comfort of riding.

[0033] As another embodiment of the present utility model, Figure 1 As shown, in this embodiment, a movable connecting member 14 is arranged between the traction connecting member 2 and the front end of the frame 1, and the rear end of the movable connecting member 14 is connected to the front end of the frame 1 through a pin shaft, and a second mounting seat 15 is installed on the movable connecting member 14, and a traction shock-absorbing cylinder 16 is installed between the second mounting seat 15 and the front end of the frame 1. During the driving of the trailer, the design of the traction shock-absorbing cylinder 16 can reduce the vibration of the frame 1, and a row of mounting holes 17 are arranged at the front of the movable connecting member 14, and the traction connecting member 2 is installed in two of the mounting holes 17 by two bolts. By changing the positions of the two screws in different mounting holes 17, the installation height of the traction connecting member 2 is adjusted, and the user can adjust it according to the situation.

[0034] In addition, an electromagnetic brake system and a hand brake system can also be set. The electromagnetic brake system is used to control the brakes of the tractor and the wheels 6 on the frame 1, and the hand brake system is used to control the brakes of the wheels 6. When the tractor brakes, the electromagnetic brake system controls the synchronous braking of the tractor and the wheels 6 on the frame 1. The hand brake system is used to achieve the braking of the trailer parking. The hand brake system and the electromagnetic brake system are existing conventional technologies and are well known in the technical field, and will not be described in detail here.

[0035] When the trailer oil supply system fails and leaks oil, the piston rods of the lifting cylinder 11 and the traction damping cylinder 16 shrink into the cylinders. At this time, the frame 1 may be lowered to contact the ground, and the frame 1 may be damaged during driving. To solve this problem, the present embodiment is further provided with a master controller, a warning light and two sets of limit protection components, which are respectively arranged on the first mounting seat 10 and the second mounting seat 15; Figure 5 and Figure 6 As shown, the limit protection assembly includes a limit cover 18, an inductive proximity sensor 19 and a pin 20;

[0036] The piston rod end of the lifting cylinder 11 is mounted on the first mounting seat 10 through the hinge shaft 21, the limit cover 18 is set on the piston rod end of the lifting cylinder 11, and one end of the limit cover 18 is set on the hinge shaft 21, the limit cover 18 can rotate around the hinge shaft 21, the limit cover 18 is a top-blocked and bottom-open structure, the other end of the limit cover 18 corresponds to the cylinder end of the lifting cylinder 11, the inductive proximity sensor 19 is installed on the outer wall of the cylinder end of the lifting cylinder 11, the pin 20 can be penetrated on the limit cover 18, and the pin 20 is located below the piston rod end of the lifting cylinder 11;

[0037] Another set of limit protection components is installed on the second mounting seat 15 in the same way; the main controller is connected to the warning light and the inductive proximity sensor 19.

[0038] If the trailer oil supply system fails and leaks oil, the piston rod of the lifting cylinder 11 is retracted until the cylinder end of the lifting cylinder 11 conflicts with the end face of the limit sleeve. The setting of the limit sleeve can prevent the piston rod from being further retracted. At this time, the frame 1 is no longer lowered. At the same time, the inductive proximity sensor 19 detects that the distance between it and the limit cover 18 reaches the alarm line. The inductive proximity sensor 19 transmits the signal to the main controller. The main controller commands the warning light to light up. The personnel on the tractor can be informed by the warning light and deal with the emergency in time; when the frame 1 needs to be raised, the pin 20 can be pulled out and the limit cover 18 can be rotated around the hinge shaft 21 to provide space for the piston rod of the lifting cylinder 11. The safety protection method of another set of traction shock-absorbing cylinders 16 is the same as above.

[0039] In order to facilitate the towed vehicle to enter the frame 1 smoothly, a slope plate 22 can also be set at the rear end of the frame 1. Figure 7 and Figure 8As shown, the slope plate 22 is a triangular structure, and the front end of the slope plate 22 is installed on the rear end of the frame 1 through a hinge 23, and the front and rear left and right sides of the slope plate 22 are connected with basket screws 24 corresponding to the left and right sides of the rear end of the frame 1; when the towed vehicle is loaded onto the frame 1, the frame 1 is first put down, and then the slope plate 22 is rotated around the hinge 23 so that the slope plate 22 is laid flat on the ground, and then the towed vehicle can be loaded into the frame 1 through the slope plate 22. After loading, the slope plate 22 is folded up. At this time, the slope plate 22 and the frame 1 are perpendicular to each other, and then the basket screws 24 on both sides are used to connect it to the rear end of the frame 1, and the basket screws 24 tighten the slope plate 22.

[0040] In addition, in order to alert the vehicles behind the trailer, a signal light 25 can be provided at the bottom of the slope plate 22. The signal light 25 is connected to the rear taillight of the tractor through a wiring harness. The signal light 25 is detachably installed at the bottom of the slope plate 22. Before the slope plate 22 is lowered for loading, the signal light 25 can be disassembled to avoid the slope plate 22 placed on the ground from crushing the signal light 25.

[0041] The present embodiment also provides a quick installation structure for a signal light 25. Specifically, a rectangular groove 26 is provided at the bottom of the slope plate 22, a channel steel 27 is fixed in the rectangular groove 26, a mounting tube 28 is fixed on the channel steel 27, a notch 29 is provided at the end of the mounting tube 28, and the notch 29 consists of a vertical hole and a circular hole; a bracket 30 is fixed on the signal light 25, a circular tube 31 is passed through the bracket 30, the circular tube 31 can be pulled out from the bracket 30, and the circular tube 31 can be passed into the circular hole of the mounting tube 28, and an aluminum alloy seat tube clamp 32 is also provided at the end of the mounting tube 28.

[0042] When the signal light 25 needs to be removed, the aluminum alloy seat tube clamp 32 is opened, and the round tube 31 is pulled out to remove the signal light 25. When installing, the bracket 30 on the signal light 25 is aligned with the notch 29 on the mounting tube 28, and then the round tube 31 is inserted into the circular hole and the bracket 30, and the aluminum alloy seat tube clamp 32 is used again to clamp and fix the end of the mounting tube 28.

[0043] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent lifting trailer, characterized in that: The vehicle frame comprises a traction connection piece installed at the front end of the vehicle frame, the traction connection piece is used to connect the tractor, two wheel support shafts are arranged on the vehicle frame, the two wheel support shafts are arranged side by side front and back, two sets of wheel assemblies are arranged on the left and right sides of the vehicle frame respectively, and the four sets of wheel assemblies correspond to the two ends of the two wheel support shafts; The two sets of wheel assemblies on the same side of the frame are installed symmetrically front and rear. The wheel assembly located on the rear side includes a swing arm, a wheel and a cylinder seat box. The lower rear end of the swing arm is hinged to the end of the wheel support shaft, and the wheel is installed at the front end of the swing arm. The cylinder seat box is fixedly installed on the side of the frame and the cylinder seat box is located behind the swing arm. A movable plate is installed in the cylinder seat box through a rotating shaft, and the movable plate can swing back and forth around the rotating shaft. A first mounting seat is installed at the upper rear end of the swing arm, and a lifting cylinder is installed between the upper end of the movable plate and the first mounting seat. Two sets of supporting shock absorbers are installed between the upper end of the movable plate and the rear end inner wall of the cylinder seat box, and two sets of shock-absorbing springs are installed between the lower end of the movable plate and the front end inner wall of the cylinder seat box.

2. The intelligent lifting trailer according to claim 1, characterized in that: A movable connecting piece is provided between the traction connecting piece and the front end of the frame, the rear end of the movable connecting piece is connected to the front end of the frame through a pin shaft, a second mounting seat is installed on the movable connecting piece, and a traction shock-absorbing oil cylinder is installed between the second mounting seat and the front end of the frame; A row of mounting holes is arranged at the front of the movable connecting piece, and the traction connecting piece is installed in two of the mounting holes through two bolts.

3. The intelligent lifting trailer according to claim 2, characterized in that: It also includes a main controller, a warning light and two sets of limit protection components, which are respectively arranged on the first mounting seat and the second mounting seat; the limit protection components include a limit cover, an inductive proximity sensor and a pin; The piston rod end of the lifting cylinder is installed on the first mounting seat through the hinge shaft, the limit cover is arranged on the piston rod end of the lifting cylinder, and one end of the limit cover is arranged on the hinge shaft, the limit cover can rotate around the hinge shaft, the limit cover is a top-blocked and bottom-open structure, the other end of the limit cover corresponds to the cylinder end of the lifting cylinder, the inductive proximity sensor is installed on the outer wall of the cylinder end of the lifting cylinder, the pin can be inserted into the limit cover, and the pin is located below the piston rod end of the lifting cylinder; Another set of limit protection components is installed on the second mounting base in the same way; the main controller is connected with the warning light and the inductive proximity sensor.

4. The intelligent lifting trailer according to claim 3, characterized in that: It also includes an electromagnetic brake system and a hand brake system. The electromagnetic brake system is used to control the brakes of the wheels on the tractor and the frame, and the hand brake system is used to control the brakes of the wheels.

5. The intelligent lifting trailer according to claim 3, characterized in that: A slope plate is arranged at the rear end of the frame. The slope plate is a triangular structure. The front end of the slope plate is installed at the rear end of the frame through a hinge. The front and rear left and right sides of the slope plate are correspondingly connected with basket screws at the left and right sides of the rear end of the frame.

6. The intelligent lifting trailer according to claim 5, characterized in that: A signal light is arranged at the bottom of the slope plate, and the signal light is detachably mounted at the bottom of the slope plate.

7. The intelligent lifting trailer according to claim 6, characterized in that: A rectangular groove is provided at the bottom of the slope plate, a channel steel is fixed in the rectangular groove, a mounting tube is fixed on the channel steel, a notch is provided at the end of the mounting tube, the notch consists of a vertical hole and a circular hole; a bracket is fixed on the signal light, a round tube is passed through the bracket, the round tube can be pulled out from the bracket, and the round tube can be passed into the circular hole of the mounting tube, and an aluminum alloy seat tube clamp is also provided at the end of the mounting tube.

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