Movable lifting tail plate with anti-collision function

Abstract

The utility model relates to the technical field of lifting tail plate, especially a movable lifting tail plate with anti -collision function. The utility model provides a movable lifting tail plate with anti -collision function, including movable frame, scissor frame, lifting platform, hydraulic cylinder, main shaft, guide block, guide rod, anti -collision beam, buffer spring, distance sensor module and prompt component, and the movable frame is used as the basic bearing structure, and the upper portion slidingly connects the lifting platform, and the movable frame right side is installed with scissor frame. The device integrates sensor early warning and mechanical buffer double anti -collision mechanism. The distance sensor module can give out sound and light alarm in advance before the collision occurs, and sufficient reaction time is reserved for the operator, when the collision is inevitable, the anti -collision beam cooperates with the buffer spring to form a mechanical buffer structure, absorbs the collision energy through the elastic deformation, effectively reduces the collision impact force, avoids the rigid collision of the tail plate and the freight car compartment, and greatly reduces the damage risk of equipment and goods.

Description

Technical Field

[0001] This utility model relates to the field of lifting tailgate technology, and in particular to a mobile lifting tailgate with anti-collision function. Background Technology

[0002] In the field of modern logistics and cargo handling, mobile lifting tailgates are widely used in various transport vehicles and storage facilities as key equipment for achieving fast and efficient cargo loading and unloading. Through their liftable platform structure, they can flexibly adapt to truck beds of different heights, significantly improving cargo loading and unloading efficiency and reducing manual labor intensity.

[0003] However, existing mobile lifting tailgates face technical bottlenecks in collision protection. Most traditional tailgates lack effective collision warning mechanisms. When operators push the tailgate closer to the truck bed, they rely solely on visual distance judgment. In complex operating environments or when visibility is obstructed, misjudgment can easily lead to a collision between the tailgate and the truck bed, causing equipment damage and cargo loss. Furthermore, while some tailgates have simple collision protection structures, they often use single rigid or elastic buffer components. When a collision occurs, they cannot adaptively buffer according to the impact force, failing to adequately absorb collision energy and potentially causing secondary damage to the tailgate structure due to the instantaneous rigid reaction force of the buffer components. Utility Model Content

[0004] In order to overcome the shortcomings mentioned in the background art, the technical problem of this utility model is to provide a mobile lifting tailgate with anti-collision function.

[0005] A mobile lifting tailgate with anti-collision function includes a mobile frame, a scissor frame, a lifting platform, hydraulic cylinders, a main shaft, guide blocks, guide rods, anti-collision beams, buffer springs, distance sensor modules, and warning components. The mobile frame serves as the basic load-bearing structure, with the lifting platform slidably connected to its upper part. A scissor frame is installed on the right side of the mobile frame. The drive end of the scissor frame and the bottom of the lifting platform form a rotating pair through a hinge seat, while the fixed end is fastened to the lower side of the mobile frame. The hinged sections of the scissor frame are coaxially rotatably connected through the main shaft. Three double-acting hydraulic cylinders are installed at equal intervals on the right side of the scissor frame. The telescopic ends of the hydraulic cylinders are hinged to the drive end of the scissor frame through ball joint bearings. Guide blocks are rotatably installed at the front and rear ends of the main shaft, and the guide blocks are slidably connected to the mobile frame. Guide rods are slidably connected inside the guide blocks. An anti-collision beam is connected between the right sides of the two guide rods. Buffer springs are connected between the front and rear ends of the anti-collision beam and the corresponding guide blocks. The buffer springs are sleeved on the outside of the guide rods. Multiple integrated distance sensor modules are installed at intervals on the anti-collision beam, and warning components are provided on the guide rods.

[0006] To further explain, the prompting component includes a connecting block, a lever, a striking ball, a sound plate, a torsion spring, and protruding rods. The bottom of the guide block has an open structure, and the bottom of the guide rod is connected to the connecting block. The connecting block is located at the opening of the guide block. Levers are rotatably connected to both sides of the connecting block. Torsion springs are connected between the levers and the connecting block. A striking ball is rotatably connected between the lower ends of two corresponding levers. A sound plate is connected to the right side of the connecting block. Multiple protruding rods are spaced apart on the front and rear side walls of the lower opening of the guide block. The levers contact and engage with the protruding rods on the corresponding sides.

[0007] To further explain, the bottom of the mobile frame is equipped with four polyurethane casters, and the casters have ball bearings inside.

[0008] To further explain, the lifting platform panel is made of patterned steel plate.

[0009] To further explain, the guide rod is made of 40Cr alloy steel and its surface is nitrided.

[0010] To further explain, the spacing between adjacent protruding rods is set to 30-50mm according to the guide rod moving speed and warning frequency requirements; the sound plate is made of thin stainless steel plate, and a 3-5mm impact gap is reserved between the sound plate and the striking ball.

[0011] Compared with the prior art, this utility model has the following advantages: 1. This device integrates a dual anti-collision mechanism of sensor early warning and mechanical buffer. The distance sensor module can issue an audible and visual alarm in advance before a collision occurs, allowing operators sufficient reaction time; when a collision is unavoidable, the anti-collision beam, together with the buffer spring, forms a mechanical buffer structure, which absorbs the collision energy through elastic deformation, effectively reducing the impact force of the collision, avoiding a rigid collision between the tailgate and the truck bed, and greatly reducing the risk of damage to equipment and goods.

[0012] 2. The system adopts a multi-level alarm design with sound, light, and electricity. During the early warning stage, the distance sensor module emits conventional sound and light signals. When a collision occurs, the striking ball in the warning component works with the sound plate to produce a continuous mechanical impact sound, forming a secondary enhanced warning. This progressive alarm method, from electronic signals to mechanical sounds, can effectively attract the attention of operators in complex working environments and avoid operational errors caused by distraction. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the hydraulic cylinder, main shaft, and guide block components of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the guide block, anti-collision beam, and buffer spring components of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the anti-collision beam, buffer spring, and distance sensor module of this utility model.

[0017] Figure 5 This is a schematic diagram of the planar structure of the guide block, guide rod, and protruding rod of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the components of this utility model, including the striking ball, the sound-producing plate, and the torsion spring. The markings in the attached diagram are: 1: Moving frame, 2: Scissor frame, 3: Lifting platform, 4: Hydraulic cylinder, 5: Main shaft, 6: Guide block, 7: Guide rod, 8: Anti-collision beam, 9: Buffer spring, 10: Distance sensor module, 11: Connecting block, 12: Lever, 13: Striking ball, 14: Sound-producing plate, 15: Torsion spring, 16: Protruding rod. Detailed Implementation

[0019] Example: A mobile lifting tailgate with anti-collision function, such as Figures 1-6As shown, the system includes a mobile frame 1, a scissor frame 2, a lifting platform 3, hydraulic cylinders 4, a main shaft 5, guide blocks 6, guide rods 7, anti-collision beams 8, buffer springs 9, a distance sensor module 10, and a prompting component. The mobile frame 1 serves as the basic load-bearing structure, with the lifting platform 3 slidably connected to its upper part. The panel of the lifting platform 3 is made of 5mm thick patterned steel plate with a pattern depth of 2mm to increase friction when goods are placed on it and prevent them from sliding. The scissor frame 2 is installed on the right side of the mobile frame 1. It adopts a classic X-type linkage mechanism design. The drive end of the scissor frame 2 and the bottom of the lifting platform 3 form a rotating pair through a hinge seat, while the fixed end is fastened to the lower side of the mobile frame 1 using a bolt assembly. The hinge sections of the scissor frame 2 are coaxially rotated through the main shaft 5. Three double-acting hydraulic cylinders 4 are installed at equal intervals on the right side of the scissor frame 2. The telescopic ends of the hydraulic cylinders 4 are hinged to the drive end of the scissor frame 2 through ball joint bearings. The telescopic stroke of the hydraulic cylinders 4 is precisely controlled by the hydraulic control system to achieve the smooth unfolding and folding of the scissor frame 2, thereby completing the lifting platform. The height adjustment function of the main shaft 5 is provided. Guide blocks 6 are rotatably installed at the front and rear ends of the main shaft 5. The guide blocks 6 are slidably connected to the moving frame 1. Guide rods 7 are slidably connected inside the guide blocks 6. The guide rods 7 are made of 40Cr alloy steel and the surface is nitrided to improve the wear resistance and fatigue resistance of the guide rods 7. Anti-collision beams 8 are connected between the right sides of the two guide rods 7. Buffer springs 9 are connected between the front and rear ends of the anti-collision beams 8 and the corresponding guide blocks 6. The buffer springs 9 are sleeved on the outside of the guide rods 7. Multiple integrated distance sensor modules 10 are installed on the anti-collision beams 8 at intervals by bolts. The sensors use the ultrasonic ranging principle. When the distance to the detected obstacle is less than the preset safety threshold, the built-in signal processing circuit triggers the sound and light alarm device to issue a warning signal to the operator. The guide rods 7 are equipped with prompt components. The bottom of the moving frame 1 is equipped with four polyurethane universal casters. The casters are equipped with ball bearings to ensure the flexibility and low resistance characteristics of the moving frame 1 when it moves. Each caster is equipped with an independent braking device to effectively prevent displacement after the device is positioned.

[0020] like Figures 5-6As shown, the prompting component includes a connecting block 11, a lever 12, a striking ball 13, a sound-emitting plate 14, a torsion spring 15, and a protruding rod 16. The bottom of the guide block 6 is open, and the bottom of the guide rod 7 is connected to the connecting block 11. The connecting block 11 is located at the opening of the guide block 6. Lever 12 is rotatably connected to both the front and rear side walls of the connecting block 11. Torsion springs 15 are connected between the lever 12 and the connecting block 11. A striking ball 13 is rotatably connected between the lower ends of two corresponding levers 12. The right side of the connecting block 11 is connected by bolts. The guide block 6 is connected to a sound-emitting plate 14. Multiple protruding rods 16 are welded at intervals on the front and rear side walls of the lower opening. The lever 12 contacts and engages with the corresponding protruding rod 16. The spacing between adjacent protruding rods 16 is set to 30-50mm according to the moving speed of the guide rod 7 and the required warning frequency. The sound-emitting plate 14 is made of 3mm thick stainless steel plate. A 3-5mm impact gap is reserved between the sound-emitting plate 14 and the striking ball 13 to ensure that the striking ball 13 can effectively strike the sound-emitting plate 14 to produce a clear warning sound.

[0021] In practical applications, when loading and unloading cargo from a truck is required, the operator pushes the mobile lifting tailgate closer to the truck bed and adjusts the height of the lifting platform 3 using the hydraulic cylinder 4 to ensure it is level with the truck bed floor. During the movement of the equipment, the distance sensor module 10 monitors the distance between the anti-collision beam 8 and the truck bed in real time. When the detected distance reaches the warning threshold, an audible and visual alarm signal is issued. If the operator fails to respond in time, the anti-collision beam 8 will collide with the carriage. The buffer spring 9 will be compressed and deformed under the impact force to absorb the collision energy. At the same time, the anti-collision beam 8 will drive the guide rod 7 to move to the left along the guide block 6. During this process, the lever 12 will contact the protruding rod 16. Under the action of the protruding rod 16, it will overcome the resistance of the torsion spring 15 and rotate, causing the striking ball 13 to rotate. This will cause the torsion spring 15 to undergo elastic deformation. When the lever 12 passes the protruding rod 16, the torsion spring 15 will release its elastic potential energy, driving the lever 12 and the striking ball 13 to rotate in opposite directions. The striking ball 13 will hit the sound plate 14 to produce a mechanical sound, forming a secondary warning. Due to the array arrangement of the protruding rods 16, the lever 12 will contact multiple protruding rods 16 in sequence during the movement of the guide rod 7, realizing the continuous impact alarm of the striking ball 13 on the sound plate 14. After receiving the warning signal, the operator can reverse the operation to move the equipment to a safe distance. At this time, the buffer spring 9 returns to its original length, driving the anti-collision beam 8 and guide rod 7 to reset. Each mechanical component returns to its initial state under the action of its own elastic element, preparing for the next operation.

Claims

1. A mobile lifting tailgate with anti-collision function, characterized in that: The system includes a mobile frame (1), a scissor frame (2), a lifting platform (3), a hydraulic cylinder (4), a main shaft (5), a guide block (6), a guide rod (7), a crash beam (8), a buffer spring (9), a distance sensor module (10), and a prompting component. The mobile frame (1) serves as the basic load-bearing structure, with the lifting platform (3) slidably connected to its upper part. The scissor frame (2) is installed on the right side of the mobile frame (1). The driving end of the scissor frame (2) and the bottom of the lifting platform (3) form a rotating pair through a hinge seat, while the fixed end is fastened to the lower side of the mobile frame (1). The hinge sections of the scissor frame (2) are coaxially rotated through the main shaft (5). The right side of the scissor frame (2) is evenly spaced. Three double-acting hydraulic cylinders (4) are installed. The telescopic end of the hydraulic cylinder (4) is hinged to the drive end of the scissor frame (2) through a ball joint bearing. The front and rear ends of the main shaft (5) are respectively rotatably mounted with guide blocks (6). The guide blocks (6) are slidably connected to the moving frame (1). The guide rods (7) are slidably connected inside the guide blocks (6). The right side of the two guide rods (7) is connected with a crash beam (8). The front and rear ends of the crash beam (8) are connected with the corresponding guide blocks (6) with buffer springs (9). The buffer springs (9) are sleeved on the outside of the guide rods (7). Multiple integrated distance sensor modules (10) are installed at intervals on the crash beams (8). The guide rods (7) are equipped with prompting components.

2. The mobile lifting tailgate with anti-collision function according to claim 1, characterized in that: The prompting component includes a connecting block (11), a lever (12), a striking ball (13), a sound plate (14), a torsion spring (15), and a protruding rod (16). The bottom of the guide block (6) is open. The bottom of the guide rod (7) is connected to the connecting block (11). The connecting block (11) is located at the opening of the guide block (6). The levers (12) are rotatably connected to both sides of the connecting block (11). The levers (12) and the connecting block (11) are connected to the torsion springs (15). The lower ends of the corresponding two levers (12) are rotatably connected to the striking ball (13). The right side of the connecting block (11) is connected to the sound plate (14). The front and rear side walls of the lower opening of the guide block (6) are provided with multiple protruding rods (16) at intervals. The levers (12) and the corresponding protruding rods (16) are in contact and cooperate.

3. The mobile lifting tailgate with anti-collision function according to claim 2, characterized in that: The bottom of the mobile frame (1) is equipped with four polyurethane casters, and the casters are equipped with ball bearings.

4. The mobile lifting tailgate with anti-collision function according to claim 3, characterized in that: The panel of the lifting platform (3) is made of patterned steel plate.

5. The mobile lifting tailgate with anti-collision function according to claim 4, characterized in that: The guide rod (7) is made of 40Cr alloy steel and its surface is nitrided.

6. The mobile lifting tailgate with anti-collision function according to claim 5, characterized in that: The spacing between adjacent protruding rods (16) is set to 30-50mm according to the moving speed of the guide rod (7) and the warning frequency requirements; the sound plate (14) is made of stainless steel sheet, and a 3-5mm impact gap is reserved between the sound plate (14) and the striking ball (13).

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