A semi-trailer towing device that is easy to install
Patent Information
- Application Number
- CN202521975233.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-15
AI Technical Summary
[0004]本实用新型的目的在于提供一种便于安装的半挂车牵引装置，以解决上述背景技术中提出的不具备便于对齐辅助安装车架的功能的问题
[0012]与现有技术相比，本实用新型的有益效果是：该便于安装的半挂车牵引装置不仅实现了便于对齐辅助安装车架的功能，而且实现了车底离地高度监测的功能，还实现了挂销防松动的功能；
Smart Images
Figure CN224660893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of loading and transportation equipment technology, specifically to a semi-trailer traction device that is easy to install. Background Technology
[0002] A semi-trailer is a trailer whose axle is located behind the vehicle's center of gravity (when the vehicle is evenly loaded) and equipped with a coupling device that transmits horizontal and vertical forces to the tractor. It mainly consists of two parts: the cab and the frame. The cab is equipped with a towing saddle, and the trailer frame has a towing pin. The pin engages with the saddle, thus connecting the cab and the frame. Currently, when connecting the cab and the frame, the driver usually operates the cab and reverses to align the saddle on the cab with the pin on the frame. This operation requires two people to work together to adjust, and reversing is quite cumbersome. It does not have the function of facilitating alignment and assisting in the installation of the frame.
[0003] Now, a new type of easy-to-install semi-trailer traction device is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a semi-trailer towing device that is easy to install, so as to solve the problem mentioned in the background art that it does not have the function of facilitating the alignment and auxiliary installation of the vehicle frame.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a semi-trailer traction device that is easy to install, comprising a flatbed semi-trailer frame, three sets of bearing wheels are provided on the left side of the bottom of the flatbed semi-trailer frame, a traction bridge is provided on the right side of the flatbed semi-trailer frame, a bridge connecting seat is welded to the left side of the traction bridge, a first electric cylinder is installed at the front and rear ends of the bridge connecting seat respectively, a support plate is fixedly connected to the output end of the first electric cylinder, a PLC controller is installed at the front end of the traction bridge, a traction pin is provided on the right side of the bottom of the traction bridge, a pin flange is welded to the top of the traction pin, and an adjustment component for easy position adjustment and auxiliary installation is provided on the right side of the bridge connecting seat.
[0006] The adjustment assembly includes a square fixed tube, which is welded to the middle position on the right side of the cable tray connector. A second electric cylinder is installed at the top of the inside of the square fixed tube, and a square push rod is inserted from bottom to top at the bottom of the square fixed tube. A concave frame is welded to the bottom of the square push rod, and an adjusting wheel is movably connected between the two sides inside the concave frame. A reduction motor is installed on the right side of the concave frame.
[0007] As a further technical solution of this utility model, the flatbed semi-trailer frame and the bridge frame connecting seat are fixedly connected, the output end of the second electric cylinder is connected to the top of the square push rod, and the output end of the reduction motor is connected to the right side of the adjusting wheel.
[0008] As a further technical solution of this utility model, the outer diameter of the square push rod is the same as the inner diameter of the square fixed tube, and the square push rod can slide up and down along the inside of the square fixed tube.
[0009] As a further technical solution of this utility model, the vertical center lines of the square push rod and the concave frame coincide, and the second electric cylinder, the geared motor, and the PLC controller are electrically connected.
[0010] As a further technical solution of this utility model, a speaker is fixedly connected to the right side of the PLC controller, and a tubular shell is fixedly connected to the middle position on the left side of the bridge connector. A laser rangefinder is installed at the top of the inside of the tubular shell, and the bottom of the laser rangefinder is higher than the bottom of the tubular shell. The PLC controller, the speaker, and the laser rangefinder are electrically connected.
[0011] As a further technical solution of this utility model, a flange ring is provided at the bottom end of the pin flange, and multiple sets of hexagonal grooves are provided at the top end of the flange ring. A pin groove is provided at the middle position of the flange ring. A second flange mounting groove is provided on the left side of the bottom of the traction bridge. A first flange mounting groove is provided at the middle position of the second flange mounting groove. The inner diameter of the pin groove is the same as the outer diameter of the traction pin. The position and size of the hexagonal groove are aligned with the bolt holes on the pin flange. The shape and size of the pin flange and the first flange mounting groove are compatible. The shape and size of the flange ring and the second flange mounting groove are compatible.
[0012] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-install semi-trailer towing device not only realizes the function of facilitating the alignment and auxiliary installation of the vehicle frame, but also realizes the function of monitoring the ground clearance of the vehicle bottom, and also realizes the function of preventing the hook pin from loosening. The system is equipped with a square fixed tube, a second electric cylinder, a square push rod, a concave frame, an adjusting wheel, and a reduction motor. When in use, after the tractor unit moves to the corresponding position, the mobile power supply is connected to the flatbed semi-trailer frame to power subsequent actions. First, the second electric cylinder inside the square fixed tube is started by the PLC controller. The second electric cylinder extends downward and pushes the square push rod down. The adjusting wheel inside the concave frame presses against the ground and raises the traction bridge. Then, the reduction motor is started. The reduction motor drives the adjusting wheel to rotate at a constant speed, which can drive the flatbed semi-trailer frame to swing around the position of the load-bearing wheel, so that the traction pin and the saddle on the tractor unit are aligned. The driver only needs to control the tractor unit to move forward or backward to quickly align it without having to reverse left or right to adjust the orientation and position. This realizes the function of facilitating alignment and assisting in the installation of the tractor unit. Equipped with a speaker, a tubular shell, and a laser rangefinder, the flatbed semi-trailer is used when goods are piled on its frame. As the amount of goods increases, or when the tire pressure is insufficient, or when the ground settles due to pressure, the distance between the flatbed semi-trailer frame and the ground will be significantly shortened. The laser rangefinder inside the tubular shell measures the distance between the frame and the ground in real time. When the distance is lower than a preset threshold, the speaker on the side of the PLC controller will issue a warning. The tubular shell can protect the laser rangefinder from being damaged by stones or other objects, thus realizing the function of monitoring the ground clearance of the vehicle. By incorporating a flange ring, hexagonal groove, pin groove, first flange mounting groove, and second flange mounting groove, the traction pin is fixed in the first flange mounting groove via the pin flange during use. A set of flange rings is installed at the bottom of the pin flange, and the hexagonal groove on the top of the flange rings can hold the bolts of the pin flange to prevent it from loosening by rotation. The flange rings are installed in the second flange mounting groove via bolts, thus achieving the function of preventing the pin from loosening. Attached Figure Description
[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is an enlarged front view cross-sectional schematic diagram of the square fixed tube of the sliding sleeve of this utility model; Figure 3 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle section; Figure 4 This is a magnified top view of the traction bridge structure of this utility model; Figure 5 This is a magnified top view of the hanging pin flange of this utility model; Figure 6 This is a top-view enlarged structural diagram of the flange ring of this utility model.
[0014] In the diagram: 1. Flatbed semi-trailer frame; 2. Load-bearing wheel; 3. Bridge frame connector; 4. Traction bridge frame; 5. First electric cylinder; 6. Support plate; 7. Square fixed tube; 8. Second electric cylinder; 9. Square push rod; 10. Concave frame; 11. Adjustable wheel; 12. Gear motor; 13. PLC controller; 14. Speaker; 15. Tubular shell; 16. Laser rangefinder sensor; 17. Traction pin; 18. Pin flange; 19. Flange ring; 20. Hexagonal groove; 21. Pin groove; 22. First flange mounting groove; 23. Second flange mounting groove. Detailed Implementation
[0015] 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.
[0016] Example: Please refer to Figure 1-6 A semi-trailer traction device that is easy to install includes a flatbed semi-trailer frame 1. Three sets of bearing wheels 2 are provided on the left side of the bottom of the flatbed semi-trailer frame 1. A traction bridge 4 is provided on the right side of the flatbed semi-trailer frame 1. A bridge connecting seat 3 is welded to the left side of the traction bridge 4. A first electric cylinder 5 is installed at the front and rear ends of the bridge connecting seat 3 respectively. A support plate 6 is fixedly connected to the output end of the first electric cylinder 5. A PLC controller 13 is installed at the front end of the traction bridge 4. A traction pin 17 is provided on the right side of the bottom of the traction bridge 4. A pin flange 18 is welded to the top of the traction pin 17. An adjustment component for easy position adjustment and auxiliary installation is provided on the right side of the bridge connecting seat 3. Please see Figure 1-6 An easy-to-install semi-trailer traction device also includes an adjustment assembly, which includes a square fixed tube 7. The square fixed tube 7 is welded to the middle position on the right side of the bridge frame connecting seat 3. A second electric cylinder 8 is installed at the top of the inside of the square fixed tube 7. A square push rod 9 is inserted from bottom to top at the bottom of the square fixed tube 7. A concave frame 10 is welded to the bottom of the square push rod 9. An adjustment wheel 11 is movably connected between the two sides inside the concave frame 10. A reduction motor 12 is installed on the right side of the concave frame 10. The flatbed semi-trailer frame 1 and the bridge frame connecting seat 3 are fixedly connected. The output end of the second electric cylinder 8 is connected to the top of the square push rod 9. The output end of the reduction motor 12 is connected to the right side of the adjusting wheel 11. The outer diameter of the square push rod 9 is the same as the inner diameter of the square fixed tube 7. The square push rod 9 can slide up and down along the inside of the square fixed tube 7. The vertical center line of the square push rod 9 and the concave frame 10 coincides. The second electric cylinder 8, the reduction motor 12, and the PLC controller 13 are electrically connected to facilitate quick adjustment and alignment and assist in installation. Specifically, such as Figure 1 and Figure 2As shown, the second electric cylinder 8 inside the square fixed tube 7 is first started by the PLC controller 13. The second electric cylinder 8 extends downward and pushes the square push rod 9 down. The adjusting wheel 11 inside the concave frame 10 presses against the ground and raises the traction bridge 4. Then, the reduction motor 12 is started. The reduction motor 12 drives the adjusting wheel 11 to rotate at a constant speed, which can drive the flatbed semi-trailer frame 1 to swing around the position of the bearing wheel 2, so that the traction pin 17 and the saddle on the front of the vehicle are in a straight line. The driver only needs to control the front of the vehicle to move forward or backward to quickly align it without having to reverse left or right to adjust the orientation and position. The second electric cylinder 8, the reduction motor 12, and the PLC controller 13 are electrically connected. This technology is existing technology and will not be described in detail.
[0017] A speaker 14 is fixedly connected to the right side of the PLC controller 13. A tubular shell 15 is fixedly connected to the middle position on the left side of the bridge connector 3. A laser rangefinder 16 is installed at the top inside the tubular shell 15. The bottom of the laser rangefinder 16 is higher than the bottom of the tubular shell 15. The PLC controller 13, speaker 14, and laser rangefinder 16 are electrically connected to facilitate monitoring the distance between the vehicle frame and the ground. Specifically, such as Figure 1 and Figure 3 As shown, the laser rangefinder 16 inside the tubular housing 15 measures the distance between the vehicle frame and the ground in real time. When the distance is lower than a preset threshold, the speaker 14 on one side of the PLC controller 13 will issue a warning. The tubular housing 15 can protect the laser rangefinder 16 from being damaged by stones or other objects. The PLC controller 13, the speaker 14, and the laser rangefinder 16 are electrically connected. This technology is existing technology and will not be described in detail here.
[0018] The bottom end of the pin flange 18 is provided with a flange ring 19, the top end of the flange ring 19 is provided with multiple sets of hexagonal grooves 20, the middle position of the flange ring 19 is provided with a pin groove 21, the bottom left side of the traction bridge 4 is provided with a second flange mounting groove 23, the middle position of the second flange mounting groove 23 is provided with a first flange mounting groove 22, the inner diameter of the pin groove 21 is the same as the outer diameter of the traction pin 17, the position and size of the hexagonal groove 20 are aligned with the screw holes on the pin flange 18, the shape and size of the pin flange 18 and the first flange mounting groove 22 are compatible, the shape and size of the flange ring 19 and the second flange mounting groove 23 are compatible, which increases the stability of the pin installation; Specifically, such as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the traction pin 17 is fixed in the first flange mounting groove 22 by the pin flange 18. A set of flange rings 19 are added to the bottom of the pin flange 18. The hexagonal groove 20 on the top of the flange ring 19 can hold the bolts of the pin flange 18 to prevent it from rotating and loosening. The flange ring 19 is installed in the second flange mounting groove 23 by bolts.
[0019] Working principle: When using this utility model, firstly, after the truck head reaches the corresponding position, the mobile power supply is connected to the flatbed semi-trailer frame 1 to provide power for subsequent actions. First, the second electric cylinder 8 inside the square fixed tube 7 is started by the PLC controller 13. The second electric cylinder 8 extends downward to push the square push rod 9 down. The adjusting wheel 11 inside the concave frame 10 presses against the ground to raise the traction bridge 4. Then, the reduction motor 12 is started. The reduction motor 12 drives the adjusting wheel 11 to rotate at a constant speed, which can drive the flatbed semi-trailer frame 1 to swing around the position of the bearing wheel 2, so that the traction pin 17 and the saddle on the truck head are in a straight line. The driver only needs to control the truck head to move forward or backward to quickly align, without having to reverse left or right to adjust the direction and position. As goods accumulate on the flatbed semi-trailer frame 1, the distance between the flatbed semi-trailer frame 1 and the ground will significantly decrease due to increased cargo, insufficient tire pressure on the load-bearing wheels 2, or ground subsidence. The laser rangefinder 16 inside the tubular housing 15 measures the distance between the frame and the ground in real time. When the distance falls below a preset threshold, a speaker 14 on one side of the PLC controller 13 issues a warning. The tubular housing 15 protects the laser rangefinder 16 from damage by stones or other objects. The towing pin 17 is fixed in the first flange mounting groove 22 via the pin flange 18. A set of flange rings 19 is installed at the bottom of the pin flange 18. The hexagonal groove 20 on the top of the flange ring 19 can hold the bolts of the pin flange 18, preventing it from loosening due to rotation. The flange rings 19 are installed in the second flange mounting groove 23 via bolts.
[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A semi-trailer traction device that is easy to install, comprising a flatbed semi-trailer frame (1), characterized in that: Three sets of bearing wheels (2) are provided on the left side of the bottom of the flatbed semi-trailer frame (1). A traction bridge (4) is provided on the right side of the flatbed semi-trailer frame (1). A bridge connecting seat (3) is welded on the left side of the traction bridge (4). A first electric cylinder (5) is installed at the front and rear ends of the bridge connecting seat (3). A support plate (6) is fixedly connected to the output end of the first electric cylinder (5). A PLC controller (13) is installed at the front end of the traction bridge (4). A traction pin (17) is provided on the right side of the bottom of the traction bridge (4). A pin flange (18) is welded to the top of the traction pin (17). An adjustment component for easy adjustment and auxiliary installation is provided on the right side of the bridge connecting seat (3). The adjustment assembly includes a square fixed tube (7), which is welded to the middle position on the right side of the bridge frame connecting seat (3). A second electric cylinder (8) is installed at the top of the inside of the square fixed tube (7). A square push rod (9) is inserted from bottom to top at the bottom of the square fixed tube (7). A concave frame (10) is welded to the bottom of the square push rod (9). An adjusting wheel (11) is movably connected between the two sides inside the concave frame (10). A reduction motor (12) is installed on the right side of the concave frame (10).
2. The semi-trailer traction device for easy installation according to claim 1, characterized in that: The flatbed semi-trailer frame (1) and the bridge frame connecting seat (3) are fixedly connected. The output end of the second electric cylinder (8) is connected to the top of the square push rod (9). The output end of the deceleration motor (12) is connected to the right side of the adjusting wheel (11).
3. The semi-trailer traction device for easy installation according to claim 1, characterized in that: The outer diameter of the square push rod (9) is the same as the inner diameter of the square fixed tube (7), and the square push rod (9) can slide up and down along the inside of the square fixed tube (7).
4. The semi-trailer traction device for easy installation according to claim 1, characterized in that: The vertical center lines of the square push rod (9) and the concave frame (10) coincide, and the second electric cylinder (8), the geared motor (12), and the PLC controller (13) are electrically connected.
5. A semi-trailer traction device that is easy to install according to claim 1, characterized in that: A speaker (14) is fixedly connected to the right side of the PLC controller (13). A tubular shell (15) is fixedly connected to the middle position on the left side of the bridge connector (3). A laser rangefinder (16) is installed at the top inside the tubular shell (15). The bottom of the laser rangefinder (16) is higher than the bottom of the tubular shell (15). The PLC controller (13), speaker (14), and laser rangefinder (16) are electrically connected.
6. A semi-trailer traction device that is easy to install according to claim 1, characterized in that: The bottom end of the pin flange (18) is provided with a flange ring (19), the top end of the flange ring (19) is provided with multiple sets of hexagonal grooves (20), the middle position of the flange ring (19) is provided with a pin groove (21), the bottom left side of the traction bridge (4) is provided with a second flange mounting groove (23), the middle position of the second flange mounting groove (23) is provided with a first flange mounting groove (22), the inner diameter of the pin groove (21) is the same as the outer diameter of the traction pin (17), the position size of the hexagonal groove (20) is aligned with the screw holes on the pin flange (18), the shape and size of the pin flange (18) and the first flange mounting groove (22) are compatible, and the shape and size of the flange ring (19) and the second flange mounting groove (23) are compatible.