Remote control unlocking structure of a skeleton semi-trailer

Abstract

The present application relates to the technical field of skeleton semi-trailer accessory, and discloses a remote control type skeleton semi-trailer unlocking structure, which comprises a main support, hollow auxiliary supports are arranged on the left and right sides of the main support, and a remote controller is connected to the front side of the main support; further comprising a hydraulic telescopic cylinder, the main body of the hydraulic telescopic cylinder is connected to the outer wall of the hollow auxiliary support, one end of the main body is provided with an output rod, the output rod is movably connected with a movable seat through a second driving link, the upper end of the movable seat is connected with a connecting shaft, and the upper end of the connecting shaft is provided with a rotating lock; the lower surface of the rotating lock is uniformly provided with anti-skid silica gel protrusions, and an anti-skid support matching the anti-skid silica gel protrusions is fixedly arranged on the main support. Through the remote control unlocking structure, the hydraulic telescopic cylinder is used to synchronously drive the rotating lock to rotate and the clamping mechanism to act, and through the cooperation of radial synchronous clamping, pneumatic expansion reinforcement and self-cleaning when encountering blockage, it is beneficial to prevent the rotating lock from loosening and separating during use, and the safety and stability of the remote control type unlocking structure are ensured.

Description

Technical Field

[0001] This invention relates to the field of skeleton semi-trailer accessories technology, specifically a remote-controlled unlocking structure for skeleton semi-trailers. Background Technology

[0002] A skeleton semi-trailer is a type of transport vehicle specifically designed for carrying containers. Its frame has no sideboards, only a load-bearing skeleton. Containers are secured using turnlocks installed at the four corners of the frame. The operation of these turnlocks directly impacts the efficiency of container loading and unloading, as well as transport safety. Traditional turnlock operation requires the driver to park the vehicle, climb onto the frame, and manually tighten or unlock each of the four turnlocks using a wrench. This manual operation is labor-intensive and inefficient, especially in scenarios like ports and railway freight yards where frequent container loading and unloading is required, directly affecting logistics turnover efficiency.

[0003] Based on this, remote-controlled rotary lock unlocking structures have emerged on the market. These structures use wireless remote control to control the drive mechanism mounted on the chassis, automatically completing the rotation of the rotary lock and enabling remote locking and unlocking of containers. This improves the convenience of unlocking operations, but it has poor anti-loosening stability, and there is a risk of loosening during container transportation.

[0004] For example, a rotary lock assembly for a container semi-trailer, with the public number CN211468283U, includes a rotary lock head, a lock shaft, a rotary lock seat, a limit ring, a connecting flange, and a torsion cylinder. The rotary lock head is fixed to the upper end of the lock shaft, and the middle part of the lock shaft passes through the rotary lock seat, the limit ring, and the connecting flange in sequence before being fixed to the output end of the torsion cylinder. The torsion cylinder drives the rotary lock head to rotate. It can help realize automatic rotary lock control and status detection of container semi-trailers, and is convenient to be integrated into automated unmanned control systems. However, its anti-loosening relies entirely on the gas pressure in the cylinder or the continuous pressure maintenance of the hydraulic system. Under the bumpy and vibrating environment of long-term vehicle operation, once the cylinder seals wear and leak air or the hydraulic valve body leaks and the pressure drops, the rotary lock is at risk of slowly rotating and loosening due to vibration. This can easily cause the container to separate from the semi-trailer, affecting the anti-loosening stability of the remote unlocking operation.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing remote-controlled unlocking structure of the skeleton semi-trailer. Summary of the Invention

[0006] The purpose of this invention is to provide a remote-controlled unlocking structure for a skeleton semi-trailer, in order to solve the problem that the remote-controlled unlocking structure for skeleton semi-trailers mentioned in the background art fails to improve its own anti-loosening stability by utilizing the unlocking drive linkage reinforcement mechanism.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a remote-controlled unlocking structure for a skeleton semi-trailer, comprising: The main support has hollow secondary supports on both its left and right sides, and a remote control is connected to its front side. Also includes: The hydraulic telescopic cylinder has its main body connected to the outer wall of the hollow sub-support. One end of the cylinder is equipped with an output rod, which is movably connected to a movable seat via a second drive linkage. The upper end of the movable seat is connected to a connecting shaft, and the upper end of the connecting shaft is equipped with a rotary lock. The lower surface of the rotary lock is evenly distributed with anti-slip silicone protrusions, and an anti-slip support adapted to the anti-slip silicone protrusions is fixed on the main bracket. A pre-tightening torsion spring is connected between the anti-slip support and the rotary lock. The protective shell is fixed between the anti-slip support and the main bracket. A lower fixed plate is fixed on its inner bottom wall. An upper turntable is movably connected to the top of the lower fixed plate through a bearing. Radial limiting grooves are evenly opened around the lower fixed plate. An adjusting slider is slidably fitted in the radial limiting grooves. An arc-shaped drive groove that slidably fits the adjusting slider is opened on the upper turntable. A first drive connecting rod is movably connected between the upper turntable and the output rod. A moving part is fixed at the upper end of the adjusting slider. A clamping fixing part is installed on the moving part by screws.

[0008] Preferably, there are six radial limiting slides, adjusting sliders, arc-shaped driving slides, moving parts, and clamping fasteners, and the six clamping fasteners are distributed at equal angles on the upper turntable.

[0009] Preferably, the lower surface of the movable seat is movably connected to the main support through a damping bearing, and the left and right sides of the main support are provided with reserved operating ports that match the output rod, the second drive linkage, and the movable seat.

[0010] Preferably, the upper end of the movable seat is fixedly connected to a first disc-shaped rotating plate, and the lower end of the connecting shaft is connected to a second disc-shaped rotating plate that abuts against the first disc-shaped rotating plate via a vertical telescopic rod.

[0011] Preferably, the upper surface of the first disc-shaped rotating plate and the lower surface of the second disc-shaped rotating plate are both evenly distributed with interlocking tooth layers, a damping bearing is provided between the connecting shaft and the protective shell, the protective shell has a hollow structure, a second spring is coaxially sleeved on the vertical telescopic rod, and a vertical sliding column is fixedly connected to the center of the first disc-shaped rotating plate and slidably connected to the second disc-shaped rotating plate and the connecting shaft.

[0012] Preferably, the inner top wall of the main support is equipped with a limit switch adapted to the second disc-shaped rotating plate, and the outer wall of the main support is equipped with a micro air pump. The output end of the micro air pump is connected to an air blowing pipe through an air supply pipe, and the output end of the air blowing pipe is uniformly provided with flat air blowing holes.

[0013] Preferably, both the upper turntable and the lower fixed plate are hollow structures, and the inner wall of the upper turntable is fixed with an upper annular evenly distributed pipe.

[0014] Preferably, the inner wall of the clamping and fixing member is fixed with an elastic hollow rubber pad layer, and a first flexible guide tube is connected between the elastic hollow rubber pad layer and the upper annular uniformly distributed tube.

[0015] Preferably, a lower annular gas storage pipe is fixedly connected to the inner wall of the lower fixed plate, and a second flexible guide pipe is connected between the lower annular gas storage pipe and the upper annular uniform distribution pipe.

[0016] Preferably, piston cylinders are evenly distributed along the circumference of the outer wall of the lower annular gas storage pipe, a piston rod is fixedly connected to the lower end of the adjusting slider, a piston body is provided at one end of the piston rod and slides with the piston cylinder, and a first spring is connected between the piston body and the piston cylinder.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: This remote-controlled unlocking structure for a skeleton semi-trailer, through remote control, utilizes a hydraulic telescopic cylinder to synchronously drive the rotation of the rotary lock and the action of the clamping mechanism. Through the combined effects of radial synchronous clamping, pneumatic expansion reinforcement, and self-cleaning upon encountering blockages, it helps prevent the rotary lock from loosening or detaching during use, ensuring the safety and stability of the remote-controlled unlocking structure. The specific details are as follows: 1. By remotely issuing commands via remote control, the hydraulic telescopic cylinder drives the movable seat and connecting shaft to rotate via the second drive linkage, realizing flexible and convenient remote control unlocking operation. Furthermore, by setting anti-slip silicone protrusions on the lower surface of the rotary lock, fixing anti-slip supports on the main bracket, and connecting a pre-tightening torsion spring between the anti-slip supports and the rotary lock, the pre-tightening torsion spring applies a pre-tightening force to the rotary lock in the locking direction, causing the anti-slip silicone protrusions to be tightly pressed against the surface of the anti-slip supports to form a flexible frictional contact, providing initial limiting and vibration reduction protection for the rotary lock. Furthermore, when the hydraulic telescopic cylinder extends to perform the locking action, it synchronously pushes the upper turntable to rotate relative to the lower fixed plate through the first drive linkage. The arc-shaped drive groove on the upper turntable forces the adjusting slider to slide synchronously towards the center along the radial limit groove, causing the moving part and the clamping and fixing parts to move closer together. The six circumferentially distributed clamping and fixing parts simultaneously press against the outer wall of the connecting shaft, realizing the centering and clamping and fixing of the connecting shaft by the clamping and fixing parts. This improves the anti-loosening stability after the turnlock is locked, preventing it from shifting position or loosening during vehicle vibration. Moreover, the six clamping and fixing parts form a uniform and symmetrical six-point clamping force in the circumference of the connecting shaft, making the connecting shaft bear a balanced force and avoiding excessive local force that could lead to deformation or unilateral wear, thus optimizing the anti-loosening and stability performance.

[0018] 2. While the adjusting slider slides radially towards the center to perform rigid clamping, the piston rod fixed to the lower end of the adjusting slider simultaneously pushes the piston body to compress the gas medium inside the piston cylinder. The compressed gas enters the internal cavity of the elastic hollow rubber pad through the lower annular gas storage pipe, the upper annular uniform distribution pipe, and the first flexible guide pipe, causing it to expand and tightly press against the outer wall of the connecting shaft, forming a flexible contact layer. This not only increases the contact area and friction to strengthen and prevent loosening, but also utilizes the damping characteristics of elastic rubber to absorb the high-frequency vibration energy during vehicle operation, avoiding direct vibration acting on the rigid clamping fasteners and causing loosening or fretting wear, thus improving the anti-loosening protection effect.

[0019] 3. When dust, sand, or other impurities enter the main support through the reserved operating port and accumulate in the movement gap of the drive mechanism, causing blockage, the rotation of the movable seat is obstructed. An axial pushing force is generated between the first and second disc-shaped rotating plates, forcing the second disc-shaped rotating plate to overcome the elastic resistance of the second spring and move upward along the vertical telescopic rod. Its upper surface touches and presses the limit switch, automatically triggering the micro air pump to start. High-pressure gas is ejected at high speed through the flat air hole at the end of the air blowing pipe, which cleans the key moving parts of the drive mechanism, such as the second drive linkage, output rod, first disc-shaped rotating plate, and meshing tooth layer, in real time. After the blockage is cleared, the transmission resistance decreases, and the second disc-shaped rotating plate automatically moves down and resets under the elastic restoring force of the second spring. The meshing tooth layer re-engages normally, and the drive mechanism resumes smooth operation, achieving adaptive anti-jamming and improving the safety and stability of the automatic remote control unlocking structure under harsh working conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention in a state of overall rotation of 90 degrees. Figure 3 This is a three-dimensional structural diagram of the hollow auxiliary support of the present invention; Figure 4 This is a three-dimensional structural diagram of the lower fixed disk of the present invention; Figure 5 This is a three-dimensional structural diagram of the upper turntable of the present invention; Figure 6 This is a schematic diagram of a partial cross-sectional three-dimensional structure of the lower fixing plate of the present invention; Figure 7 This is a three-dimensional structural diagram of the lower annular gas storage pipe of the present invention; Figure 8 This is a three-dimensional structural diagram of the hydraulic telescopic cylinder of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the rotary lock of the present invention.

[0021] In the diagram: 1. Main support; 2. Reserved operating port; 3. Rotary lock; 301. Pre-tensioned torsion spring; 302. Anti-slip silicone protrusion; 303. Anti-slip support; 4. Protective shell; 5. Lower fixed plate; 501. Upper turntable; 502. Moving part; 503. Arc-shaped drive groove; 504. First drive connecting rod; 505. Clamping and fixing part; 506. Radial limiting groove; 507. Adjusting slider; 6. Upper annular evenly distributed pipe; 601. Elastic hollow rubber pad; 602. First flexible guide pipe; 603. Lower annular gas storage pipe; 604. Piston 605. Cylinder; 606. First spring; 607. Piston body; 608. Piston rod; 609. Second flexible guide tube; 7. Hydraulic telescopic cylinder; 8. Second drive linkage; 9. Output rod; 10. First disc-shaped rotating plate; 11. Second disc-shaped rotating plate; 12. Engaging tooth layer; 13. Vertical telescopic rod; 14. Second spring; 15. Limit switch; 16. Air blowing pipe; 17. Flat air blowing hole; 18. Miniature air pump; 19. Remote control; 20. Connecting shaft; 21. Air supply pipe; 22. Movable seat; 23. Hollow secondary bracket; 24. Vertical sliding column. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1 - Figure 9 This invention provides a technical solution: a remote-controlled unlocking structure for a skeleton semi-trailer, comprising: The main support 1 has hollow secondary supports 23 on both its left and right sides, and a remote control 19 is connected to its front side. Also includes: The hydraulic telescopic cylinder 7 is mainly connected to the outer wall of the hollow sub-support 23. One end of the cylinder is provided with an output rod 9. The output rod 9 is movably connected to a movable seat 22 through a second drive connecting rod 8. The upper end of the movable seat 22 is connected to a connecting shaft 20. The upper end of the connecting shaft 20 is provided with a rotary lock 3. The lower surface of the rotary lock 3 is evenly distributed with anti-slip silicone protrusions 302. The main bracket 1 is fixed with an anti-slip support 303 that is compatible with the anti-slip silicone protrusions 302. A pre-tightening torsion spring 301 is connected between the anti-slip support 303 and the rotary lock 3. In the above technical solution, when the container needs to be locked, the operator remotely issues a locking command via remote controller 19. The output rod 9 of the hydraulic telescopic cylinder 7 extends and pushes the movable seat 22 to rotate via the second drive linkage 8. The movable seat 22 drives the rotary lock 3 to rotate 90 degrees via the connecting shaft 20, so that the rotary lock 3 is engaged in the lower hole of the container corner fitting, thus completing the locking action. When unlocking is required, the operator issues an unlocking command, the output rod 9 of the hydraulic telescopic cylinder 7 retracts, and pulls the movable seat 22 and the rotary lock 3 back to the starting position, so that the lock head of the rotary lock 3 is aligned with the corner fitting hole, and the container can be lifted away, thus achieving a relatively flexible remote unlocking function. Furthermore, the pre-tensioning torsion spring 301 can apply a pre-tensioning force to the rotary lock 3 in the locking direction, and the anti-slip silicone protrusion 302 on the lower surface of the rotary lock 3 is tightly pressed against the upper surface of the anti-slip support 303, forming a flexible frictional contact between the two. The pre-tensioning force of the pre-tensioning torsion spring 301 and the flexible anti-slip structure can improve the rotary lock 3 to achieve limiting and vibration reduction protection, and improve the stability of the clamping and reinforcement state. This technical solution also includes, for example: Figure 1 - Figure 6 The technical solution shown is as follows: The protective shell 4 is fixed between the anti-slip support 303 and the main support 1. The bottom wall of the shell is fixed with a lower fixed plate 5. The top of the lower fixed plate 5 is movably connected to the upper turntable 501 through a bearing. The lower fixed plate 5 is evenly provided with radial limiting grooves 506 along the circumference. An adjusting slider 507 is slidably fitted in the radial limiting grooves 506. The upper turntable 501 is provided with an arc-shaped drive groove 503 that slidably fits the adjusting slider 507. The upper turntable 501 and the output rod 9 are movably connected with a first drive connecting rod 504. The upper end of the adjusting slider 507 is fixed with a moving part 502. A clamping fixing part 505 is installed on the moving part 502 by screws. Six radial limiting slides 506, adjusting sliders 507, arc-shaped drive slides 503, moving parts 502 and clamping fasteners 505 are provided, and the six clamping fasteners 505 are distributed at equal angles on the upper turntable 501. The lower surface of the movable seat 22 is movably connected to the main support 1 through a damping bearing, and the left and right sides of the main support 1 are provided with reserved operation ports 2 that match the output rod 9, the second drive linkage 8, and the movable seat 22. In the above technical solution, when the output rod 9 of the hydraulic telescopic cylinder 7 extends to perform the locking action, the output rod 9 drives the movable seat 22 and the rotary lock 3 to rotate through the second drive linkage 8, and simultaneously drives the first drive linkage 504 to move. The first drive linkage 504 pushes the upper turntable 501 to rotate relative to the lower fixed plate 5. When the upper turntable 501 rotates, the arc-shaped drive groove 503 on it generates a thrust on the adjusting slider 507, causing the adjusting slider 507 to slide synchronously towards the center along the radial limiting groove 506 on the lower fixed plate 5. The radial inward movement of 507 causes the moving part 502 and the clamping and fixing part 505 fixed at its upper end to move towards the center simultaneously, thereby causing the six circumferentially distributed clamping and fixing parts 505 to simultaneously press against the outer wall of the connecting shaft 20 fixed at the bottom of the rotary lock 3, realizing the centering and clamping and fixing of the connecting shaft 20 by the clamping and fixing parts 505. When the rotary lock 3 completes the locking rotation to the position, the clamping and fixing parts 505 also complete the radial clamping of the connecting shaft 20, which improves the stability of the anti-loosening body after the rotary lock 3 is locked and prevents it from shifting position or loosening during vehicle driving vibration. Furthermore, the six clamping fasteners 505 form a uniform and symmetrical six-point clamping force in the circumference of the connecting shaft 20, so that the connecting shaft 20 is subjected to balanced force when subjected to vibration and impact loads, avoiding deformation or unilateral wear caused by excessive local force. At the same time, it also has an adaptive centering function. Even if there is a slight installation eccentricity of the connecting shaft 20, it can automatically adjust to the center position during the six-point synchronous clamping process, thus optimizing the anti-loosening and stability performance. Example 2: Based on Example 1, this technical solution further discloses a pneumatic expansion reinforcement structure to achieve flexible locking and vibration damping of the connecting shaft 20, which is beneficial to improving the anti-loosening stability of the rotary lock 3. Specifically, as follows... Figure 5 - Figure 7 As shown: The upper surface of the first disc-shaped rotating plate 10 and the lower surface of the second disc-shaped rotating plate 11 are both evenly distributed with a layer of interlocking teeth 12. A damping bearing is provided between the connecting shaft 20 and the protective shell 4. The protective shell 4 has a hollow structure. The vertical telescopic rod 13 is coaxially sleeved with a second spring 14. A vertical sliding column 24 is fixedly connected to the center of the first disc-shaped rotating plate 10 and slidably connected to the second disc-shaped rotating plate 11 and the connecting shaft 20. The inner top wall of the main support 1 is equipped with a limit switch 15 that is compatible with the second disc-shaped rotating plate 11. The outer wall of the main support 1 is equipped with a micro air pump 18. The output end of the micro air pump 18 is connected to an air blowing pipe 16 through an air supply pipe 21. The output end of the air blowing pipe 16 is evenly provided with flat air blowing holes 17. In the above technical solution, when the adjusting slider 507 slides radially towards the center under the drive of the arc-shaped drive groove 503 and rigidly clamps the connecting shaft 20, the piston rod 607 fixed to the lower end of the adjusting slider 507 moves synchronously, pushing the piston body 606 to move inside the piston cylinder 604, compressing the gas medium inside the piston cylinder 604. The compressed medium enters the inner wall of the six clamping and fixing members 505 through the second flexible guide pipe 608, the lower annular gas storage pipe 603, the upper annular uniform distribution pipe 6, and the first flexible guide pipe 602. The internal cavity of the elastic hollow rubber pad 601 causes the elastic hollow rubber pad 601 to expand and tightly press against the outer wall of the connecting shaft 20. The expansion of the elastic hollow rubber pad 601 forms a flexible contact layer, which not only increases the contact area and friction with the connecting shaft 20, thus playing a role in reinforcement and preventing loosening, but also utilizes the damping characteristics of elastic rubber to effectively absorb the high-frequency vibration energy transmitted to the connecting shaft 20 during vehicle operation, avoiding the vibration from directly acting on the rigid clamping fastener 505, which could lead to loosening or fretting wear. Furthermore, the first spring 605 can assist the piston body 606 in resetting during unlocking, drawing the medium inside the elastic hollow rubber pad 601 back into the piston cylinder 604, restoring the rubber pad to its original state, which is convenient for the next operation. Example 3: Based on Example 1, this technical solution further discloses a mechanism that retracts upon encountering an obstruction and triggers automatic purging and cleaning, thereby achieving active anti-jamming protection for the drive mechanism and improving the stability of the unlocking structure operation. Specifically, as follows... Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown: Both the upper turntable 501 and the lower fixed plate 5 are hollow structures, and the inner wall of the upper turntable 501 is fixed with an upper annular uniformly distributed pipe 6. An elastic hollow rubber pad 601 is fixedly provided on the inner wall of the clamping fastener 505, and a first flexible guide tube 602 is connected between the elastic hollow rubber pad 601 and the upper annular uniformly distributed tube 6. The lower fixed plate 5 has a lower annular gas storage pipe 603 fixedly connected to its inner wall, and a second flexible guide pipe 608 is connected between the lower annular gas storage pipe 603 and the upper annular uniform distribution pipe 6. Piston cylinders 604 are evenly distributed along the circumference of the outer wall of the lower annular gas storage pipe 603. A piston rod 607 is fixedly connected to the lower end of the adjusting slider 507. One end of the piston rod 607 is provided with a piston body 606 that slides with the piston cylinder 604. A first spring 605 is connected between the piston body 606 and the piston cylinder 604. In the above technical solution, since the working environment of the skeleton semi-trailer is mostly harsh conditions with dust and mud such as ports, mines, and construction sites, dust, sand and other impurities can easily enter the main support 1 through the reserved operation port 2 and adhere to and accumulate in the movement gaps of the drive mechanism such as the second drive linkage 8 and the output rod 9. When the impurities accumulate to a certain extent, they will hinder the normal rotation of the movable seat 22, causing the hydraulic telescopic cylinder 7 to increase the load and even jam, seriously affecting the stability and safety of the remote control unlocking operation. When the above blockage occurs, the movable seat 22 still attempts to rotate under the drive of the hydraulic telescopic cylinder 7, but the rotation of the second disc rotating plate 11 is blocked by the upper end of the connecting shaft 20, and the torque cannot be transmitted normally between the first disc rotating plate 10 and the second disc rotating plate 11. An axial pushing force is generated between the two, which forces the second disc rotating plate 11 to overcome the first disc rotating plate 10. The elastic resistance of the second spring 14 causes the vertical telescopic rod 13 to retract upwards. During the upward retraction of the second disc-shaped rotating plate 11, its upper surface will touch and press the limit switch 15 installed on the inner top wall of the main bracket 1. After the limit switch 15 is triggered, the micro air pump 18 is automatically started. The micro air pump 18 sprays gas at high speed from the flat air hole 17 at the end of the air pipe 16 through the air supply pipe 21 and blows it towards the reserved operation port 2 area. It performs instantaneous and powerful blowing and cleaning of the key moving parts of the drive mechanism, such as the second drive linkage 8, output rod 9, first disc-shaped rotating plate 10, and meshing tooth layer 12, blowing away the attached and embedded dust, sand and other impurities. After the blockage impurities are cleared, the transmission resistance decreases. The second disc-shaped rotating plate 11 automatically moves down and resets under the action of the elastic restoring force of the second spring 14. The meshing tooth layer 12 re-engages normally, and the drive mechanism resumes operation. By utilizing the function of the automatic cleaning structure that retracts upon encountering a blockage and triggers an automatic purging process, an adaptive anti-jamming protection is achieved, which prevents the hydraulic system from overloading and the transmission components from being damaged due to the accumulation of impurities, thus avoiding the inability to complete the remote control unlocking operation. This improves the reliability and safety of the automatic remote control unlocking structure.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A remote-controlled unlocking structure for a skeleton semi-trailer, comprising: The main support (1) has hollow secondary supports (23) on both its left and right sides, and a remote control (19) is connected to its front side. Its characteristic is that it further includes: The hydraulic telescopic cylinder (7) is connected to the outer wall of the hollow sub-support (23). One end of the cylinder is provided with an output rod (9). The output rod (9) is movably connected to a movable seat (22) through a second drive link (8). The upper end of the movable seat (22) is connected to a connecting shaft (20). The upper end of the connecting shaft (20) is provided with a rotary lock (3). The lower surface of the rotary lock (3) is evenly distributed with anti-slip silicone protrusions (302), and an anti-slip support (303) adapted to the anti-slip silicone protrusions (302) is fixed on the main bracket (1). A pre-tightening torsion spring (301) is connected between the anti-slip support (303) and the rotary lock (3). The protective shell (4) is fixed between the anti-slip support (303) and the main support (1). The bottom wall of the shell is fixed with a lower fixed plate (5). The top of the lower fixed plate (5) is movably connected to the upper turntable (501) through a bearing. The lower fixed plate (5) is evenly provided with radial limiting grooves (506) along the circumference. The radial limiting grooves (506) are slidably fitted with the adjusting slider (507). The upper turntable (501) is provided with an arc-shaped drive groove (503) that is slidably fitted with the adjusting slider (507). The upper turntable (501) and the output rod (9) are movably connected with a first drive connecting rod (504). The upper end of the adjusting slider (507) is fixed with a moving part (502). The moving part (502) is installed with a clamping fixing part (505) by screws.

2. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 1, characterized in that: The radial limiting slide (506), adjusting slider (507), arc-shaped driving slide (503), moving part (502) and clamping fixing part (505) are all provided in 6 units, and the 6 clamping fixing parts (505) are distributed at equal angles on the upper turntable (501).

3. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 1, characterized in that: The lower surface of the movable seat (22) is movably connected to the main support (1) through a damping bearing, and the left and right sides of the main support (1) are provided with reserved operation ports (2) that match the output rod (9), the second drive linkage (8), and the movable seat (22).

4. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 1, characterized in that: The upper end of the movable seat (22) is fixedly connected to a first disc-shaped rotating plate (10), and the lower end of the connecting shaft (20) is connected to a second disc-shaped rotating plate (11) that abuts against the first disc-shaped rotating plate (10) via a vertical telescopic rod (13).

5. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 4, characterized in that: The upper surface of the first disc-shaped rotating plate (10) and the lower surface of the second disc-shaped rotating plate (11) are both evenly distributed with a layer of interlocking teeth (12). A damping bearing is provided between the connecting shaft (20) and the protective shell (4). The protective shell (4) has a hollow structure. The vertical telescopic rod (13) is coaxially sleeved with a second spring (14). A vertical sliding column (24) is fixedly connected to the center of the first disc-shaped rotating plate (10) and slidably connected to the second disc-shaped rotating plate (11) and the connecting shaft (20).

6. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 4, characterized in that: The inner top wall of the main support (1) is equipped with a limit switch (15) that is compatible with the second disc-shaped rotating plate (11). The outer wall of the main support (1) is equipped with a micro air pump (18). The output end of the micro air pump (18) is connected to a blowing pipe (16) through an air supply pipe (21). The output end of the blowing pipe (16) is evenly provided with flat blowing holes (17).

7. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 1, characterized in that: Both the upper turntable (501) and the lower fixed plate (5) are hollow structures, and the inner wall of the upper turntable (501) is fixed with an upper annular uniformly distributed pipe (6).

8. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 7, characterized in that: The inner wall of the clamping fastener (505) is fixed with an elastic hollow rubber pad (601), and a first flexible guide tube (602) is connected between the elastic hollow rubber pad (601) and the upper annular uniformly distributed tube (6).

9. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 7, characterized in that: The lower fixed plate (5) is fixed to the inner wall with a lower annular gas storage pipe (603), and a second flexible guide pipe (608) is connected between the lower annular gas storage pipe (603) and the upper annular uniform distribution pipe (6).

10. The remote-controlled unlocking structure for a skeleton semi-trailer according to claim 9, characterized in that: The outer wall of the lower annular gas storage pipe (603) is evenly distributed with piston cylinders (604) along the circumference. The lower end of the adjusting slider (507) is fixedly connected to a piston rod (607). One end of the piston rod (607) is provided with a piston body (606) that slides with the piston cylinder (604). A first spring (605) is connected between the piston body (606) and the piston cylinder (604).

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