Self-adaptive traction towing device for vehicle

Abstract

The utility model discloses a self-adaptive traction towing device for a vehicle, relates to the technical field of automobile engineering, and designs a towing device capable of self-adaptively adjusting the position of a ball head assembly according to the condition of a rear vehicle, a laser range finder and a proximity switch are used as assistance, and the control of a programmable logic controller (PLC) is matched. The trailer can be quickly matched for traction and towing, and the working efficiency is improved; a structure capable of enabling the device to rotate and fold in a horizontal plane is designed, the device is automatically screwed out when in use and automatically and smoothly hidden below a rear anti-collision beam of the automobile when not in use, normal use of the automobile is not affected, additional damage to a rear automobile when a rear-end collision accident occurs is avoided, and the use safety of the automobile is improved; due to the design of an automatic control system, the intelligence and convenience of the device are improved, the device can adapt to towing of more types of vehicles, the structure is simple, operation is rapid, and the device is suitable for large-scale application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engineering, in particular to an adaptive traction and trailer device for vehicles. Background Art

[0002] The traction and towing device of a vehicle is a device fixed on the front vehicle for towing or dragging the rear vehicle. Its function is to move the traction vehicle with a fault forward or to tow the vehicle away from the scene. In short, the power of the front vehicle drives the rear vehicle to move. The most primitive towing device is a structure of a fixed frame and a ball head. The fixed frame is used to be fixed at the rear position of the front vehicle, the ball head is connected to the fixed frame, and the ball head is used to connect with the rear vehicle through a set of hanging wire ropes. With the continuous advancement of technology, the towing structure is also constantly innovating. For example, a height-adjustable towing device disclosed in Chinese patent announcement number CN215751760U has a ball head connector connected to the trailer, an L-shaped connector connected to the car, and a connecting seat for connecting the ball head connector and the L-shaped connector. The L-shaped connector is provided with a plurality of first connecting holes connected to the connecting seat, and the connecting seat is provided with a first through hole for the ball head connector to pass through. The L-shaped connector is connected to the connecting seat through a fixing. The device can adjust the height of the ball head, so that the structure can adapt to different types of trailers and has a wide range of applications. However, the disadvantage of this device is that the device is protruding and fixed behind the rear bumper of the vehicle and cannot be folded. Once a rear-end collision occurs, the towing device will cause serious damage to the vehicle behind.

[0003] Chinese patent application number CN2023201571508 discloses a towing and trailering device, which is provided with a driving mechanism that can drive the towing ball head to rotate. When a vehicle rear-ends, the towing ball head is driven by the driving mechanism to rotate forward, so that the towing ball head is folded to the front side of the rear anti-collision beam to avoid the towing ball head protruding from the rear side of the rear anti-collision beam, and avoids additional damage to the rear vehicle when the vehicle rear-ends, thereby effectively increasing the safety of the device. At the same time, the device can also adjust the height between the towing ball head and the ground and the distance between the towing ball head and the towing vehicle, and the scope of application is wider. However, the device also has certain problems. First, the position adjustment operation of the towing ball head is relatively complicated and needs to be manually adjusted according to the actual trailer situation. The folding of the towing ball head is achieved by rotating in the vertical plane. If the position is not appropriate, it is easy to cause contact with the ground and cannot be folded. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the utility model provides an adaptive traction and trailer device for vehicles, which is fixedly arranged on the front side of the anti-collision beam of the automobile, and automatically adjusts the position of the ball head according to the actual situation of the towed vehicle. After use, the whole device automatically rotates in the horizontal plane into the bottom of the automobile, which is safer and faster, avoids additional damage to the rear vehicle in the event of a rear-end collision, and has good accuracy and high safety.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] An adaptive traction and towing device for a vehicle comprises a connecting seat, a limiting frame, a position adjustment mechanism and a ball head assembly, wherein the connecting seat is fixedly installed on the front side of the rear anti-collision beam of the automobile, the limiting frame is fixedly connected to the connecting seat, the position adjustment mechanism can be rotatably arranged on the front side of the limiting frame, the ball head assembly is arranged at the end of the position adjustment mechanism, and also comprises an automatic control mechanism, the position adjustment mechanism is composed of a right-angle sleeve and a sleeve one and a sleeve two respectively arranged at two ends thereof, the sleeve one and the sleeve two are just inserted into the two ends of the right-angle sleeve, the sleeve one and the sleeve two are respectively arranged with adjustment holes, the two ends of the right-angle sleeve are respectively arranged with fixing holes, the side surface of the limiting frame on which the position adjustment mechanism contacts is arranged as a semicircular arc surface, the upper end of the limiting frame is arranged with a fixing and rotating mechanism of the sleeve one, the two straight sleeves An adjusting cylinder is respectively arranged on the corner sides, and the piston rods of the adjusting cylinders are respectively connected to the sleeve one and the sleeve two. After the air source is connected, the adjusting cylinder adjusts the relative positions of the sleeve one, the sleeve two and the right-angle sleeve through the telescopic piston rod, and the positions between the two sleeves and the right-angle sleeve are fixed by inserting the fixing parts into the fixing holes and the corresponding adjusting holes. The ball head assembly is arranged at the end of the sleeve two, and two laser rangefinders and a proximity switch are also arranged at the end of the sleeve two. The two laser rangefinders respectively measure the distance between the rear vehicle and the ball head assembly and the distance between the device and the ground. The automatic control mechanism mainly includes a programmable controller PLC, and the programmable controller PLC is respectively connected to the drive component switches of the fixing and rotating mechanism of the sleeve one, the starting switches of the two adjusting cylinders, the two laser rangefinders and the proximity switch through signals.

[0007] The fixing and rotating mechanism of the sleeve 1 includes a fixing ring, a driving motor and a bearing. The fixing ring is fixedly arranged on the upper front side of the limiting frame, and a bearing is arranged on the inner side of the fixing ring. The top of the sleeve 1 is arranged as a solid structure and the outer periphery is arranged with an edge. The driving motor is fixedly arranged above the fixing ring, and its output shaft is fixedly connected to the solid part of the top of the sleeve 1. The sleeve 1 is overlapped on the fixing ring by the outer edge. The outer circumference size of the bearing and the sleeve 1 is adapted to form a rotating connection, and the sleeve 1 is driven to rotate by the driving motor.

[0008] The ball head assembly includes a ball head and a fixing mechanism, wherein the fixing mechanism is fixedly arranged at the end of the second sleeve and a spiral seat is arranged on the upper part, the ball head is arranged in multiple sizes and a connecting plug adapted to the spiral seat is provided at the bottom, and the ball head is fixed to the fixing mechanism after the spiral seat and the connecting plug are tightened, and a ball head storage component is arranged on the rear side of the limit frame for placing a spare ball head.

[0009] The utility model designs a towing device which can adaptively adjust the position of a ball head assembly according to the situation of a rear vehicle, uses a laser rangefinder and a proximity switch as auxiliary, cooperates with the control of a programmable controller PLC, realizes rapid adaptation to a towing vehicle for towing and towing, and improves work efficiency; designs a structure which can enable the device to rotate and fold in a horizontal plane, automatically rotates out when in use, and automatically and smoothly hides under the rear anti-collision beam of the automobile when not in use, does not affect the normal use of the vehicle, avoids additional damage to the rear vehicle in the event of a rear-end collision, and improves the safety of vehicle use; the design of the automatic control system improves the intelligence and convenience of the device, can adapt to towing of more types of vehicles, has a simple structure, is quick to operate, and is suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram showing the structure of the utility model;

[0011] Figure 2 This is the control principle diagram of the utility model. DETAILED DESCRIPTION

[0012] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments:

[0013] like Figure 1As shown, the adaptive traction and towing device for vehicles includes a connecting seat 1, a limiting frame 2, a position adjustment mechanism 3 and a ball head assembly 4, wherein the connecting seat 1 is fixedly installed on the front side of the rear anti-collision beam of the automobile, the limiting frame 2 is fixedly connected to the connecting seat 1, the position adjustment mechanism 3 can be rotatably arranged on the front side of the limiting frame 2, the ball head assembly 4 is arranged at the end of the position adjustment mechanism 3, and also includes an automatic control mechanism, the position adjustment mechanism 3 is composed of a right-angle sleeve 31 and a sleeve 1 32 and a sleeve 2 33 respectively arranged at two ends thereof, the sleeve 1 32 and the sleeve 2 33 are just inserted into the two ends of the right-angle sleeve 31, the sleeve 1 32 and the sleeve 2 33 are respectively provided with adjustment holes 34, and the two ends of the right-angle sleeve 31 are respectively provided with fixing holes 35, the side surface of the limiting frame 2 on which the position adjustment mechanism 3 contacts is set as a semicircular arc surface, the upper end of the limiting frame 2 is provided with a fixing and rotating mechanism of the sleeve 1 32, and the two right-angle sides of the right-angle sleeve 31 An adjusting cylinder 36 is respectively arranged on the upper and lower parts, and the piston rod of the adjusting cylinder 36 is respectively connected to the sleeve 1 32 and the sleeve 2 33. After the air source is connected, the adjusting cylinder 36 adjusts the relative positions of the sleeve 1 32, the sleeve 2 33 and the right-angle sleeve 31 through the telescopic piston rod, and the positions between the two sleeves and the right-angle sleeve 31 are fixed by inserting the fixing part into the fixing hole 35 and the corresponding adjusting hole 34. The ball head assembly 4 is arranged at the end of the sleeve 2 33, and two laser rangefinders 37 and a proximity switch 38 are also arranged at the end of the sleeve 2 33. The two laser rangefinders 37 respectively measure the distance between the rear vehicle and the ball head assembly 4 and the distance between the device and the ground. The automatic control mechanism mainly includes a programmable controller PLC51, and the programmable controller PLC51 is respectively connected to the drive component switch of the fixing and rotating mechanism of the sleeve 1 32, the start switch of the two adjusting cylinders 36, the two laser rangefinders 37 and the proximity switch 38 through signals.

[0014] As a preferred embodiment, in this embodiment, the fixing and rotating mechanism of the sleeve 32 includes a fixing ring 21, a driving motor 22 and a bearing. The fixing ring 21 is fixedly arranged on the upper front part of the limit frame 2, and a bearing is arranged on the inner side of the fixing ring 21. The top of the sleeve 32 is arranged as a solid structure and the outer periphery is arranged with an edge. The driving motor 22 is fixedly arranged above the fixing ring 21, and its output shaft is fixedly connected to the solid part of the top of the sleeve 32. The sleeve 32 is overlapped on the fixing ring 21 by the external edge. The bearing is adapted to the outer circumference of the sleeve 32 to form a rotating connection, and the sleeve 32 is driven by the driving motor 22 to realize rotation.

[0015] As a preferred method, in this embodiment, the ball head assembly 4 includes a ball head 41 and a fixing mechanism 42. The fixing mechanism 42 is fixedly arranged at the end of the sleeve 33 and a spiral seat is arranged on the upper part. The ball head 41 is arranged in multiple sizes and has a connecting plug that is compatible with the spiral seat at the bottom. After the spiral seat and the connecting plug are tightened, the ball head 41 is fixed to the fixing mechanism 42. A ball head storage component 43 is arranged on the rear side of the limit frame 2 for placing spare ball heads 41, which is convenient for taking and using. Multiple specifications are optional and it does not take up space after being folded.

[0016] During the application of the utility model, a remote controller can be designed for the automatic control mechanism, or a control panel can be designed and placed in a suitable position in the vehicle for easy operation. This can be set as needed according to actual conditions and is not limited here. When a vehicle needs to be towed, the vehicle is driven to a position at a certain distance in front of the vehicle to be towed. First, a control signal is sent to the drive motor 22 through the programmable controller PLC51 of the automatic control mechanism. The drive motor 22 is started to drive the sleeve 1 32 to rotate in the fixed ring 21. When the sleeve 2 33 is rotated out from under the vehicle and vertically protrudes from the rear anti-collision beam (rotated 90 degrees), the drive motor 22 is turned off; the two laser rangefinders 37 respectively measure the distance between the rear vehicle and the ball head assembly 4 and the distance between the device and the ground in real time, and feed back to the programmable controller PLC51. If the measured distance is very different from the set distance, it is necessary to start the vehicle forward or backward adjustment. If the difference is within the controllable range, the two adjustment cylinders 36 are started to adjust the positions between the sleeve 1 32, the sleeve 2 33 and the right-angle sleeve 31 respectively. When the appropriate adjustment hole 34 and the fixing hole 35 correspond, a fixing member such as a pin shaft or a bolt is inserted through the fixing hole 35 and the adjustment hole 34 to achieve the purpose of fixing. At this time, the model of the ball head 41 is determined according to the specific situation of the towed vehicle, and it is inserted into the spiral seat and tightened. At this time, the vehicle is started to move fine-tuned. When the traction rope approaches the ball head 41, the proximity switch 38 starts to send a signal to the programmable controller PLC51 to alarm. At this time, the vehicle stops moving, the traction rope of the rear vehicle is hung on the ball head 41, and the vehicle is started to tow the towed vehicle. When the towing work is completed, the traction rope is removed, the ball head 41 and the fixings on the sleeve are removed, and the programmable controller PLC51 sends a control signal to the two regulating cylinders 36 and the drive motor 22. The regulating cylinder 36 is reset to a normal state, and the sleeve 1 32 and the sleeve 2 33 respectively maintain the maximum overlap with the right-angle sleeve 31 to ensure that their overall volume is minimized. The output shaft of the drive motor 22 drives the sleeve 1 32 to rotate 90 degrees in the opposite direction in the fixing ring 21 to the bottom of the rear anti-collision beam of the vehicle, which does not affect the normal use of the vehicle at all, avoids additional damage to the rear vehicle in the event of a rear-end collision, and has high safety. In this embodiment, manual operation is only required to install and disassemble the fixing parts and select and tighten the ball head 41, which greatly saves labor and improves work efficiency.

[0017] In the present invention, the automatic control mechanism can use a single chip microcomputer or a programmable controller PLC, etc., and write a control program according to actual needs and load it on it. This is a conventional technology that can be continued by technicians in this field. It is not within the scope of protection of the present invention, so it is not described in detail. In fact, the present invention only provides a basic implementation method that enables the traction device to have automatic intelligent properties. If the technicians are interested, they can add more controllable device structures and realize automatic control of the entire traction device through the control program, which can save labor, improve efficiency, and ensure safety.

[0018] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An adaptive towing and trailering device for a vehicle, comprising a connecting seat (1), a limiting frame (2), a position adjustment mechanism (3) and a ball head assembly (4), wherein the connecting seat (1) is fixedly mounted on the front side of a rear anti-collision beam of a vehicle, the limiting frame (2) is fixedly connected to the connecting seat (1), the position adjustment mechanism (3) is rotatably arranged on the front side of the limiting frame (2), and the ball head assembly (4) is arranged at the end of the position adjustment mechanism (3), characterized in that: The invention also comprises an automatic control mechanism, wherein the position adjustment mechanism (3) comprises a right-angle sleeve (31) and a sleeve 1 (32) and a sleeve 2 (33) respectively arranged at two ends thereof, wherein the sleeve 1 (32) and the sleeve 2 (33) are just inserted into the two ends of the right-angle sleeve (31), and adjustment holes (34) are respectively arranged on the sleeve 1 (32) and the sleeve 2 (33), and fixing holes (35) are respectively arranged at the two ends of the right-angle sleeve (31). The side surface of the limiting frame (2) in contact with the position adjustment mechanism (3) is arranged as a semicircular arc surface, and the upper end of the limiting frame (2) is provided with a fixing and rotating mechanism of the sleeve 1 (32), and an adjustment cylinder (36) is respectively arranged on the two right-angle sides of the right-angle sleeve (31), and the piston rod of the adjustment cylinder (36) is respectively connected to the sleeve 1 (32) and the sleeve 2 (33), and after the air source is connected, the adjustment cylinder (36) is telescopically moved. The piston rod adjusts the relative positions of the first sleeve (32), the second sleeve (33) and the right-angle sleeve (31), and the positions of the two sleeves and the right-angle sleeve (31) are fixed by inserting a fixing piece into the fixing hole (35) and the corresponding adjusting hole (34). The ball head assembly (4) is arranged at the end of the second sleeve (33). The end of the second sleeve (33) is also provided with two laser rangefinders (37) and a proximity switch (38). The two laser rangefinders (37) respectively measure the distance between the rear vehicle and the ball head assembly (4) and the distance between the device and the ground. The automatic control mechanism mainly includes a programmable controller PLC (51). The programmable controller PLC (51) is respectively connected to the drive component switch of the fixing and rotating mechanism of the first sleeve (32), the start switches of the two adjusting cylinders (36), the two laser rangefinders (37) and the proximity switch (38) through signals.

2. The adaptive traction and trailer device for a vehicle according to claim 1, characterized in that: The fixing and rotating mechanism of the sleeve 1 (32) comprises a fixing ring (21), a driving motor (22) and a bearing. The fixing ring (21) is fixedly arranged on the upper front part of the limiting frame (2). The inner side of the fixing ring (21) is provided with a bearing. The top of the sleeve 1 (32) is provided with a solid structure and the outer periphery is provided with an edge. The driving motor (22) is fixedly arranged above the fixing ring (21). The output shaft thereof is fixedly connected to the solid part of the top of the sleeve 1 (32). The sleeve 1 (32) is overlapped on the fixing ring (21) by the outer edge. The bearing is matched with the outer circumference of the sleeve 1 (32) to form a rotating connection. The sleeve 1 (32) is driven by the driving motor (22) to realize rotation.

3. The adaptive traction and trailer device for a vehicle according to claim 1, characterized in that: The ball head assembly (4) comprises a ball head (41) and a fixing mechanism (42); the fixing mechanism (42) is fixedly arranged at the end of the second sleeve (33) and has a spiral seat at the top; the ball head (41) is arranged in a plurality of sizes and has a connecting plug at the bottom that matches the spiral seat; the spiral seat and the connecting plug are screwed together to fix the ball head (41) to the fixing mechanism (42); and a ball head storage component (43) is arranged at the rear side of the limit frame (2) for placing a spare ball head (41).

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