Low flatbed semitrailer with ladder structure

Abstract

The utility model provides a low flatbed semitrailer with a ladder structure, relates to the technical field of semitrailer, the utility model discloses a flat body, the one end rotationally connected with the ladder board of hydraulic pressure rod near the outer surface of flat body, the outer surface of ladder board is provided with the limiting device, the limiting device includes U -shaped frame pole, the outer surface of frame pole is provided with two groups of electric push -rod, the output rod of electric push -rod is provided with the pressing plate, the utility model discloses a limiting device is set up, through adjusting the horizontal position of frame pole on flat body makes the one side of flat body provided with the baffle rod and the one side contact of the goods stacked and placed on flat body, through the ladder board cooperation frame pole and the baffle rod of frame pole outer surface in the process of semitrailer movement after flat body rear end can limit the goods position placed on flat body, avoid the goods placed on flat body due to the weight and the direction of the car head displacement when semitrailer brake, improve the stability and security when using semitrailer.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer technology, and in particular to a low-bed semi-trailer with a ladder structure. Background Technology

[0002] Low-bed semi-trailers with ladders are vehicles specifically designed for transporting heavy machinery and other large goods. Their ladder structure facilitates loading goods onto the trailer from the ground. The ladder is usually driven and controlled by a hydraulic system, allowing it to rotate at one end of the semi-trailer's deck.

[0003] When transporting goods using low-bed semi-trailers, the goods are usually placed on the flatbed of the semi-trailer and secured in position with ropes or maintained by their own weight. However, if the vehicle brakes suddenly while the cab is pulling the flatbed, the goods may move towards the cab on the flatbed, causing them to collide with the connecting plate at one end of the flatbed or the rear of the cab, resulting in damage to the goods and a safety accident. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that when the tractor pulls the flatbed trailer, if the vehicle brakes suddenly, the cargo may move on the flatbed towards the tractor, causing the cargo to collide with the connecting plate at one end of the flatbed or the rear of the tractor, thus causing damage to the cargo and safety accidents. The present invention is a low flatbed semi-trailer with a ladder structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-bed semi-trailer with a ladder structure, comprising a flatbed body, the bottom end of which is rotatably connected to several movable wheels via a pivot shaft, a connecting plate fixedly connected to one end of the flatbed body, the connecting plate being used to connect the flatbed body to the truck head, two sets of hydraulic rods rotatably disposed at the end of the flatbed body away from the connecting plate, a ladder plate rotatably connected to the end of the outer surface of the flatbed body near the hydraulic rods, the output rod of the hydraulic rods being rotatably connected to one side of the ladder plate, and a limiting device provided on the outer surface of the ladder plate to further restrict the position of goods placed on the flatbed body and increase the stability of transported goods.

[0006] The effect achieved by the above components is as follows: When using a low-bed semi-trailer, the connecting plate at one end of the flatbed is connected to the cab using a connector. The hydraulic rod at one end of the flatbed is controlled to retract via a remote control device. During the retraction of the hydraulic rod, it rotates downward at one end of the flatbed. At the same time, the output rod of the hydraulic rod rotates on one side of the ladder plate and pulls the ladder plate downward. When the hydraulic rod is fully retracted, one end of the ladder plate rests at an angle between the ground and the flatbed. The goods can then be transported from the outer surface of the ladder plate to the outer surface of the flatbed. The cab pulls the flatbed to move it on the ground via the bottom wheels. After the goods are placed, the hydraulic rod is extended to push the ladder plate upward until it is perpendicular to the flatbed.

[0007] Preferably, the limiting device includes a U-shaped frame rod, with L-shaped rods fixedly connected to both ends of the frame rod, and rotating wheels rotatably connected to both sides of the L-shaped rods. Several stop rods are fixedly connected to one side of the frame rod. Two sets of electric push rods are provided on the outer surface of the frame rod, and pressure plates are provided on the output rods of the electric push rods. Rectangular grooves are respectively opened on both sides of the outer surface of the flat plate, and sliding grooves are opened on the outer side of the inner wall of the rectangular grooves. The L-shaped rods at both ends of the frame rod slide on the inner walls of the two rectangular grooves, and the rotating wheels on the outer surface of the L-shaped rods roll on the inner wall of the sliding grooves.

[0008] The aforementioned components achieve the following effects: By setting up the frame rod, when using a semi-trailer, after placing the goods on the outer surface of the flatbed, the frame rod can be pushed to control the L-shaped rods at both ends of the frame rod to move inside the rectangular grooves on both sides of the flatbed. At the same time, the rollers on the outer surface of the L-shaped rods will roll on the inner wall of the groove, adjusting the horizontal position of the frame rod on the flatbed so that the side of the flatbed with the stop bar contacts the side of the goods stacked on the flatbed. Subsequently, the two sets of electric push rods on the outer surface of the frame rod extend, causing the pressure plate at the bottom of the electric push rod output rod to press against the outer surface of the flatbed, fixing the position of the frame rod on the flatbed. During the movement of the semi-trailer, the ladder plate at the rear end of the flatbed, in conjunction with the frame rod and the stop bar on the outer surface of the frame rod, can restrict the position of the goods placed on the flatbed, preventing the goods placed on the flatbed from shifting towards the front of the vehicle due to their own weight when the semi-trailer brakes, thus improving the stability and safety when using the semi-trailer.

[0009] Preferably, a plurality of rubber pads are fixedly connected to the bottom end of the pressure plate, and the pads are linearly distributed at the bottom end of the pressure plate.

[0010] The effect achieved by the above components is that by setting the pad strip, the friction between the bottom end of the pressure plate and the outer surface of the plate can be increased, thereby increasing the stability of the support rod position when the pressure plate is pressed against the outer surface of the plate.

[0011] Preferably, reinforcing rods are fixedly connected to both sides of the output rod of the electric push rod, and the end of the reinforcing rod away from the output rod of the electric push rod is fixedly connected to the top of the pressure plate.

[0012] The effect achieved by the above components is that by setting up reinforcing rods, the outer side of the connection between the electric push rod output rod and the top of the pressure plate can be supported and reinforced, thereby improving the structural strength and stability of the connection between the pressure plate and the electric push rod output rod during use.

[0013] Preferably, two support rods are fixedly connected to the side of the support rod away from the stop rod, and the end of the support rod away from the support rod slides on the outer surface of the flat plate.

[0014] The effect achieved by the above components is that after the position of the frame pole is fixed on the flat plate, the top back side of the frame pole can be supported by the support rod to prevent the top of the frame pole from tilting when it is pushed by the cargo.

[0015] Preferably, auxiliary rods are fixedly connected to both sides of the outer surface of the frame rod, and the outer surface of the auxiliary rods is U-shaped.

[0016] The aforementioned components achieve the following effect: when moving the position of the support pole, the operator can hold the U-shaped auxiliary rods on both sides of the support pole, which facilitates the lateral movement of the support pole on the flat plate.

[0017] Preferably, a silicone buffer sheet is fixedly connected to one side of the stop bar, and the buffer sheet protrudes from the outer surface of the stop bar.

[0018] The effect achieved by the above components is that when the support rod moves to the side of the goods placed on the flat plate, the goods will come into contact with the silicone buffer sheet on the outer surface of the support rod. The buffer sheet can cushion the contact between the goods and the support rod, reducing the impact force when the goods collide with the outer surface of the support rod.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, by setting a limiting device, the horizontal position of the frame rod on the flatbed is adjusted so that the side of the flatbed with the stop bar contacts the side of the goods stacked on the flatbed. During the movement of the semi-trailer, the ladder plate at the rear end of the flatbed, together with the frame rod and the stop bar on the outer surface of the frame rod, can restrict the position of the goods placed on the flatbed, preventing the goods placed on the flatbed from shifting towards the front of the vehicle due to their own weight when the semi-trailer brakes, thus improving the stability and safety when using the semi-trailer. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2This is a three-dimensional structural diagram of the flat plate body of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the support pole of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the pressure plate of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the support rod of this utility model.

[0026] Legend: 1. Flat plate; 2. Limiting device; 21. Rectangular groove; 22. Slide groove; 23. Frame rod; 24. L-shaped rod; 25. Rotary wheel; 26. Stop bar; 27. Electric push rod; 28. Pressure plate; 29. ​​Pad strip; 210. Reinforcing rod; 211. Support rod; 212. Auxiliary rod; 213. Buffer plate; 3. Moving wheel; 4. Hydraulic rod; 5. Ladder plate; 6. Connecting plate. Detailed Implementation

[0027] Example 1, such as Figure 1-2 As shown, a low-bed semi-trailer with a ladder structure includes a flatbed body 1. Several movable wheels 3 are rotatably connected to the bottom end of the flatbed body 1 via a pivot. A connecting plate 6 is fixedly connected to one end of the flatbed body 1, serving to connect the flatbed body 1 to the truck head. Two sets of hydraulic rods 4 are rotatably mounted on the end of the flatbed body 1 away from the connecting plate 6. A ladder plate 5 is rotatably connected to the outer surface of the flatbed body 1 near the hydraulic rods 4. The output rods of the hydraulic rods 4 are rotatably connected to one side of the ladder plate 5. A limiting device 2 is provided on the outer surface of the ladder plate 5 to further restrict the position of goods placed on the flatbed body 1, increasing the stability of transported goods. When using the low-bed semi-trailer, a connecting piece is used to connect one end of the flatbed body 1... The connecting plate 6 is connected to the vehicle head. The hydraulic rod 4 at one end of the flatbed 1 is operated and retracted by the remote control device. During the retraction of the hydraulic rod 4, it will rotate downward at one end of the flatbed 1. At the same time, the output rod of the hydraulic rod 4 will rotate on one side of the ladder plate 5 and pull the ladder plate 5 downward. When the hydraulic rod 4 is fully retracted, one end of the ladder plate 5 will rest on the ground at an angle to the flatbed 1. Then, the goods can be transported to the outer surface of the flatbed 1 through the outer surface of the ladder plate 5. The vehicle head pulls the flatbed 1 to move it on the ground through the bottom moving wheels 3. After the goods are placed, the hydraulic rod 4 is operated to extend and push the ladder plate 5 upward to a vertical state between the flatbed 1.

[0028] Reference Figure 1-5As shown in this embodiment: the limiting device 2 includes a U-shaped frame rod 23, with L-shaped rods 24 fixedly connected to both ends of the frame rod 23, and rotating wheels 25 rotatably connected to both sides of the L-shaped rods 24. Several stop rods 26 are fixedly connected to one side of the frame rod 23. Two sets of electric push rods 27 are provided on the outer surface of the frame rod 23, and pressure plates 28 are provided on the output rods of the electric push rods 27. Rectangular grooves 21 are respectively opened on both sides of the outer surface of the flat plate 1, and sliding grooves 22 are opened on the outer side of the inner wall of the rectangular grooves 21. The L-shaped rods 24 at both ends of the frame rod 23 slide on the inner walls of the two rectangular grooves 21, and the rotating wheels 25 on the outer surface of the L-shaped rods 24 roll on the inner wall of the sliding grooves 22. By setting the frame rod 23, when using a semi-trailer, after the goods are placed on the outer surface of the flat plate 1, the frame rod 23 can be pushed to control the L-shaped rods 24 at both ends of the frame rod 23 to move on both sides of the flat plate 1. The rectangular groove 21 on the side moves inside, while the roller 25 on the outer surface of the L-shaped rod 24 rolls on the inner wall of the slide 22. The horizontal position of the frame rod 23 on the flat plate 1 is adjusted so that the side of the flat plate 1 with the stop bar 26 contacts the side of the goods stacked on the flat plate 1. Then, the two sets of electric push rods 27 on the outer surface of the frame rod 23 extend, so that the pressure plate 28 at the bottom of the output rod of the electric push rod 27 abuts against the outer surface of the flat plate 1, fixing the position of the frame rod 23 on the flat plate 1. During the movement of the semi-trailer, the ladder plate 5 at the rear end of the flat plate 1, together with the frame rod 23 and the stop bar 26 on the outer surface of the frame rod 23, can restrict the position of the goods placed on the flat plate 1, preventing the goods placed on the flat plate 1 from shifting towards the front of the vehicle due to their own weight when the semi-trailer brakes, thus improving the stability and safety when using the semi-trailer.

[0029] Reference Figure 2-5 As shown in this embodiment: several rubber pads 29 are fixedly connected to the bottom end of the pressure plate 28. The pads 29 are linearly distributed at the bottom end of the pressure plate 28. By setting the pads 29, the friction between the bottom end of the pressure plate 28 and the surface of the flat plate 1 when it is pressed against the outer surface of the flat plate 1 can be increased, thereby increasing the stability of the pressure plate 28 when it is pressed against the outer surface of the flat plate 1 and fixed to the position of the support rod 23. The output rod of the electric push rod 27 is fixedly connected to both sides of the reinforcing rod 210. The end of the reinforcing rod 210 away from the output rod of the electric push rod 27 is fixedly connected to the top end of the pressure plate 28. By setting the reinforcing rod 210, the outer side of the connection between the output rod of the electric push rod 27 and the top end of the pressure plate 28 can be supported and reinforced, thereby improving the structural strength and stability of the connection between the pressure plate 28 and the output rod of the electric push rod 27 during use.

[0030] Reference Figure 2-5As shown in this embodiment: two support rods 211 are fixedly connected to the side of the support rod 23 away from the stop rod 26. The end of the support rod 211 away from the support rod 23 slides on the outer surface of the flat plate 1. After the position of the support rod 23 on the flat plate 1 is fixed, the support rods 211 can support the back side of the top of the support rod 23 to prevent the angle of the top of the support rod 23 from deflecting when it is pushed by the cargo. Auxiliary rods 212 are fixedly connected to both sides of the outer surface of the support rod 23. The outer surface of the auxiliary rods 212 is U-shaped. When moving the position of the support rod 23, the operator... The U-shaped auxiliary rods 212 on both sides of the support rod 23 can be held to facilitate the lateral movement of the support rod 23 on the flat plate 1. A silicone buffer sheet 213 is fixedly connected to one side of the stop rod 26. The buffer sheet 213 protrudes from the outer surface of the stop rod 26. When the support rod 23 moves to the side of the goods placed on the flat plate 1, the goods will contact the silicone buffer sheet 213 on the outer surface of the stop rod 26. The buffer sheet 213 can buffer the contact between the goods and the stop rod 26, reducing the impact force when the goods collide with the outer surface of the stop rod 26.

[0031] Working principle: When using a low-bed semi-trailer, the connecting plate 6 at one end of the flatbed 1 is connected to the truck head using a connector. The hydraulic rod 4 at one end of the flatbed 1 is retracted via remote control. During retraction, the hydraulic rod 4 rotates downwards at one end of the flatbed 1. Simultaneously, the output rod of the hydraulic rod 4 rotates on one side of the ladder plate 5, pulling the ladder plate 5 downwards. When the hydraulic rod 4 is fully retracted, one end of the ladder plate 5 rests at an angle to the ground between it and the flatbed 1. Goods can then be transported from the outer surface of the ladder plate 5 to the outer surface of the flatbed 1. After the goods are placed, the hydraulic rod 4 is extended to push the ladder plate 5 upwards until it is perpendicular to the flatbed 1. This then pushes the frame rod 23, controlling the L-shaped rods 24 at both ends of the frame rod 23 to rotate on both sides of the flatbed 1. The rectangular groove 21 moves inside, while the rollers 25 on the outer surface of the L-shaped rod 24 roll on the inner wall of the chute 22, adjusting the horizontal position of the frame rod 23 on the flat plate 1 so that the side of the flat plate 1 with the stop bar 26 contacts the side of the goods stacked on the flat plate 1. Then, the two sets of electric push rods 27 on the outer surface of the frame rod 23 extend, so that the pressure plate 28 at the bottom of the output rod of the electric push rod 27 abuts against the outer surface of the flat plate 1, fixing the position of the frame rod 23 on the flat plate 1. The flat plate 1 is moved by the truck head and moves on the ground by the moving wheels 3 at the bottom to transport the goods. During the movement of the semi-trailer, the ladder plate 5 at the rear end of the flat plate 1, together with the frame rod 23 and the stop bar 26 on the outer surface of the frame rod 23, can restrict the position of the goods placed on the flat plate 1.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A low flat semi-trailer with a ladder structure, comprising a flat body (1), characterized in that: The bottom end of the flat plate (1) is rotatably connected to several moving wheels (3) via a rotating shaft. One end of the flat plate (1) is fixedly connected to a connecting plate (6), which is used to connect the flat plate (1) to the vehicle head. Two sets of hydraulic rods (4) are rotatably provided on the end of the flat plate (1) away from the connecting plate (6). A ladder plate (5) is rotatably connected to the end of the outer surface of the flat plate (1) near the hydraulic rods (4). The output rod of the hydraulic rod (4) is rotatably connected to one side of the ladder plate (5). The outer surface of the ladder plate (5) is provided with a limiting device (2) that can further restrict the position of goods placed on the flat plate (1) and increase the stability of transported goods.

2. The low-bed semi-trailer with a ladder structure according to claim 1, characterized in that: The limiting device (2) includes a U-shaped frame rod (23), with L-shaped rods (24) fixedly connected to both ends of the frame rod (23), and rotating wheels (25) rotatably connected to both sides of the L-shaped rods (24). Several stop rods (26) are fixedly connected to one side of the frame rod (23). Two sets of electric push rods (27) are provided on the outer surface of the frame rod (23). The output rod of the electric push rod (27) is provided with a pressure plate (28). Rectangular grooves (21) are opened on both sides of the outer surface of the flat plate (1). A sliding groove (22) is opened on the outer side of the inner wall of the rectangular groove (21). The L-shaped rods (24) at both ends of the frame rod (23) slide on the inner wall of the two rectangular grooves (21), and the rotating wheels (25) on the outer surface of the L-shaped rods (24) roll on the inner wall of the sliding groove (22).

3. A low-bed semi-trailer with a ladder structure according to claim 2, characterized in that: Several rubber pads (29) are fixedly connected to the bottom end of the pressure plate (28), and the pads (29) are linearly distributed at the bottom end of the pressure plate (28).

4. A low-bed semi-trailer with a ladder structure according to claim 2, characterized in that: The output rod of the electric push rod (27) is fixedly connected to two reinforcing rods (210) on both sides. The end of the reinforcing rod (210) away from the output rod of the electric push rod (27) is fixedly connected to the top of the pressure plate (28).

5. A low-bed semi-trailer with a ladder structure according to claim 2, characterized in that: Two support rods (211) are fixedly connected to the side of the support rod (23) away from the stop rod (26), and the end of the support rod (211) away from the support rod (23) slides on the outer surface of the flat plate (1).

6. A low-bed semi-trailer with a ladder structure according to claim 2, characterized in that: The outer surfaces of the support rod (23) are respectively fixedly connected to auxiliary rods (212), and the outer surfaces of the auxiliary rods (212) are U-shaped.

7. A low-bed semi-trailer with a ladder structure according to claim 2, characterized in that: A silicone buffer sheet (213) is fixedly connected to one side of the stop bar (26), and the buffer sheet (213) protrudes from the outer surface of the stop bar (26).

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