Container transport semi-trailer self-unloading device

Abstract

The utility model provides a container transport semitrailer self -discharging device relates to semitrailer self -discharging device technical field, the utility model discloses a frame plate and bottom plate, the one end of frame plate is provided with two axle slots, the one side fixedly connected with axle rod of first mounting panel, the one end of axle rod away from first mounting panel is connected with the one side rotation of second mounting panel, the utility model discloses a buffer device is set up, and the fixed connection between first mounting panel and second mounting panel is converted as the rotary connection through axle rod, when the process of container unloading both sides uneven weight, through the buffer of extruding and lengthening spring to the rotation of axle rod, make frame plate and container relative to first connecting plate and hydraulic rod can be left or right angular deflection, as far as possible avoid the connecting piece between hydraulic rod and frame plate when uneven weight container receives greater lateral deflection force, cause the connecting piece fatigue damage, affect the stability problem of connecting structure between connecting piece and frame plate.

Description

Technical Field

[0001] This utility model relates to the technical field of semi-trailer self-unloading devices, and in particular to a self-unloading device for a container transport semi-trailer. Background Technology

[0002] The self-unloading device of a container semi-trailer is a specialized device that integrates a hydraulic or mechanical drive system on the semi-trailer to automatically unload cargo from the container. It is mainly suitable for containerized transportation of bulk cargo (such as coal, ore, grain, and building materials) or packaged cargo (such as bagged fertilizer and boxed parts). Its core value is to improve unloading efficiency, reduce site dependence, and reduce labor costs.

[0003] During operation, the self-unloading device tilts the container on the pallet using the extension of hydraulic rods to unload the material. However, improper placement angles and quantities of material inside the container can lead to uneven weight distribution on both sides. During unloading, the weight on both sides of the container may also dynamically change, causing uneven stress on the connecting parts between the hydraulic rods and the pallet during operation. Over time, this can cause fatigue damage and deformation of the connecting parts, affecting the stability of the connection structure between the connecting parts and the pallet. Utility Model Content

[0004] The purpose of this invention is to address the problem of uneven weight distribution on both sides of a container due to improper placement angle and quantity of materials inside the container. During unloading, the weight on both sides of the container may also dynamically change, leading to uneven stress on the connecting parts between the hydraulic rod and the frame during operation. Over time, this can cause fatigue damage and deformation of the connecting parts, affecting the stability of the connection structure between the connecting parts and the frame. Therefore, this invention provides a self-unloading device for container semi-trailers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a container transport semi-trailer self-unloading device, comprising a frame plate and a bottom plate. The outer surface of the frame plate is L-shaped, and two shaft grooves are provided at one end of the frame plate for inserting connecting rods from the semi-trailer into the shaft grooves to connect with the frame plate. The outer surface of the frame plate is provided with several through holes, the specifications of which are the same as the pin holes for connecting containers on the semi-trailer. A hydraulic rod is rotatably provided on the outer surface of the bottom plate, and a first mounting plate is rotatably provided on the outer side of the output rod of the hydraulic rod. A second mounting plate is connected to one side of the first mounting plate through a buffer device, and several mounting holes are provided at both ends of the outer surface of the second mounting plate.

[0006] The effects achieved by the above components are as follows: When installing the self-unloading device, the connecting rods on the semi-trailer are respectively inserted into the two axle grooves at one end of the frame plate. The bottom end of the bottom plate is connected to the frame of the semi-trailer through fasteners. The second mounting plate is connected to the frame plate by fasteners passing through the mounting holes on the outer surface of the second mounting plate. The container is placed on the outer surface of the frame plate and fixed to the container by pins passing through the through holes on the outer surface of the frame plate. When the self-unloading device is working, the hydraulic rod extends slowly. During the extension of the hydraulic rod output rod, it will rotate on one side of the first mounting plate. At the same time, the bottom end of the hydraulic rod will rotate on the outer surface of the bottom plate. The output rod of the hydraulic rod pushes the end of the frame plate with the axle groove to rotate upward on the outer surface of the connecting rod, causing the container on the frame plate to tilt and unload the material inside the container. After unloading is completed, the hydraulic rod retracts, and the output rod of the hydraulic rod pulls the frame plate downward to rotate slowly back to the surface of the semi-trailer frame.

[0007] Preferably, the buffer device includes two U-shaped rods, one side of each U-shaped rod being fixedly connected to both ends of the outer surface of the second mounting plate. Two protrusions are fixedly connected to one side of each U-shaped rod, and the outer surface of each protrusion has a through groove. A shaft is fixedly connected to one side of the first mounting plate, and the end of the shaft away from the first mounting plate is rotatably connected to the side of the second mounting plate where the U-shaped rod is located. Several springs are respectively provided on both sides of the outer surface of the shaft, and rings are fixedly connected to the upper and lower ends of each spring. Each spring on both sides of the outer surface of the shaft passes through the through groove of the protrusion on the outer surface of the two U-shaped rods. The end of the spring near the shaft is fixedly connected to the outer surface of the shaft through the ring, and the ring at the end of the spring away from the shaft rests against the outer surfaces of both ends of the U-shaped rod.

[0008] The effect achieved by the above components is as follows: By setting the shaft, during the operation of the self-unloading device, the unloading of goods inside the container may cause different weight changes on both sides of the container. When the weight on both sides of the container is uneven, the second connecting plate will slowly rotate on one side of the first connecting plate towards the heavier side through the shaft. At the same time, it will compress the spring located between the two ends of the U-shaped rod on the shaft side. The spring on the other side of the shaft will be stretched, so that the frame and the container can tilt to the left or right relative to the first connecting plate and the hydraulic rod. When the weight of the goods inside the container is balanced after unloading, the compressed spring and the stretched spring will return to their original state and push the frame to rotate in the original direction, so that the frame returns to the balanced state.

[0009] Preferably, the inner walls of the two shaft grooves are respectively fixedly connected with rubber rings, and the inner walls of the rubber rings are arc-shaped at both sides.

[0010] The effect achieved by the above components is as follows: after the connecting rod on the semi-trailer is inserted into the axle grooves on both sides of the frame plate, when the frame plate tilts during the rotation of the connecting rod, it will squeeze the rubber ring inside the axle groove, so that the frame plate can rotate and tilt normally on the outside of the connecting rod.

[0011] Preferably, reinforcing rings are fixedly connected to both sides of the frame plate near the shaft groove, with the two reinforcing rings located on the outer sides of the two rubber rings respectively.

[0012] The effect achieved by the above components is that by placing the rubber ring inside the two reinforcing rings, the outer ring shape of the rubber ring can be reinforced, thereby improving the durability of the rubber ring.

[0013] Preferably, grooves are formed at the upper and lower ends of the outer surface of the shaft, and two rubber rods are fixedly connected to one side of the second mounting plate, with the two rubber rods located inside the two grooves on the outer surface of the shaft.

[0014] The effect achieved by the above components is that when the shaft rotates, the inner wall of the groove contacts the rubber rod, which squeezes the rubber rod and further buffers the rotation of the shaft.

[0015] Preferably, two positioning holes are respectively opened at the upper and lower ends of the U-shaped rod, and two positioning rods are respectively fixedly connected to both sides of the outer surface of the shaft.

[0016] The effect achieved by the above components is that when the shaft rotates on one side of the second mounting plate, the positioning rod will move inside the positioning hole. When one side of the positioning rod contacts the inner wall of the positioning hole, the shaft cannot continue to rotate. The rotation range and angle of the shaft can be limited by the positioning rod and the positioning rod.

[0017] Preferably, a positioning ring is fixedly connected to the end of the shaft away from the first mounting plate, and one side of the positioning ring slides on the side of the two U-shaped rods away from the first mounting plate.

[0018] The effect achieved by the above components is that when the shaft rotates, one side of the positioning ring will slide on one side of the two U-shaped rods. The positioning ring can further limit the angle between the shaft and the first mounting plate, and avoid the angle between the second mounting plate and the first mounting plate from deviating as much as possible.

[0019] Preferably, a support rod is fixedly connected to the side of the U-shaped rod away from the protrusion, the end of the support rod away from the U-shaped rod rests on the outer surface of the first mounting plate, and the end of the support rod near the first mounting plate has several through holes.

[0020] The effect achieved by the above components is that when the first mounting plate is installed on the outer surface of the frame plate, the fasteners are also passed through the through holes on the outer surface of the support rod. The support rod can support and reinforce the connection structure between the U-shaped rod and the first mounting plate.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, a buffer device is provided, and a shaft is installed between the first mounting plate and the second mounting plate. The fixed connection between the first mounting plate and the second mounting plate is converted into a rotating connection through the shaft. When the weight on both sides of the container is uneven during unloading, the second connecting plate will slowly rotate from one side of the first connecting plate to the side with the heavier weight through the shaft. The rotation of the shaft is buffered by compression and extension springs, so that the frame and the container can be tilted to the left or right relative to the first connecting plate and the hydraulic rod. This avoids the problem of the connecting parts between the hydraulic rod and the frame being subjected to large lateral deflection forces when the weight of the container is uneven, which could cause fatigue damage to the connecting parts and affect the stability of the connection structure between the connecting parts and the frame. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the frame plate of this utility model;

[0025] Figure 3 This utility model Figure 2 A magnified three-dimensional structural diagram of point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the rubber ring of this utility model;

[0027] Figure 5 This utility model Figure 4 A magnified three-dimensional structural diagram of part B;

[0028] Figure 6 This is a three-dimensional structural diagram of the shaft of this utility model.

[0029] Legend: 1. Frame plate; 2. Buffer device; 21. U-shaped rod; 22. Protrusion; 23. Through groove; 24. Shaft rod; 25. Spring; 26. Ring; 27. Rubber ring; 28. Groove; 29. ​​Rubber rod; 210. Positioning hole; 211. Positioning rod; 212. Reinforcing ring; 213. Positioning ring; 214. Support rod; 3. Base plate; 4. Hydraulic rod; 5. First mounting plate; 6. Second mounting plate; 7. Shaft groove. Detailed Implementation

[0030] Example 1, such as Figure 1-4As shown, a container semi-trailer self-unloading device includes a frame plate 1 and a bottom plate 3. The outer surface of the frame plate 1 is L-shaped, and two shaft grooves 7 are opened at one end of the frame plate 1 for inserting connecting rods from the semi-trailer into the shaft grooves 7 to connect with the frame plate 1. The outer surface of the frame plate 1 has several through holes, the specifications of which are the same as the pin holes on the semi-trailer for connecting containers. A hydraulic rod 4 is rotatably mounted on the outer surface of the bottom plate 3. A first mounting plate 5 is rotatably mounted on the outer side of the output rod of the hydraulic rod 4. A second mounting plate 6 is connected to one side of the first mounting plate 5 through a buffer device 2. Several mounting holes are opened at both ends of the outer surface of the second mounting plate 6. When installing the self-unloading device, the connecting rods from the semi-trailer are respectively inserted into the two shaft grooves 7 at one end of the frame plate 1, and the bottom end of the bottom plate 3 is fastened to the semi-trailer. The vehicle frame is connected by fasteners passing through the mounting holes on the outer surface of the second mounting plate 6 to connect the second mounting plate 6 to the frame plate 1. The container is placed on the outer surface of the frame plate 1 and fixed to the container by pins passing through the through holes on the outer surface of the frame plate 1. When the self-unloading device is working, the hydraulic rod 4 extends slowly. During the extension of the output rod of the hydraulic rod 4, it will rotate on one side of the first mounting plate 5. At the same time, the bottom end of the hydraulic rod 4 will rotate on the outer surface of the base plate 3. The output rod of the hydraulic rod 4 pushes the end of the frame plate 1 with the shaft groove 7 to rotate upward on the outer surface of the connecting rod, so that the container located on the frame plate 1 is tilted and the material inside the container is unloaded. After unloading is completed, the hydraulic rod 4 retracts, and the output rod of the hydraulic rod 4 pulls the frame plate 1 downward to rotate slowly back to the surface of the semi-trailer frame.

[0031] Reference Figure 1-6As shown, in this embodiment: the buffer device 2 includes two U-shaped rods 21, one side of each U-shaped rod 21 is fixedly connected to both ends of the outer surface of the second mounting plate 6, and two protrusions 22 are fixedly connected to one side of each U-shaped rod 21. A through groove 23 is provided on the outer surface of each protrusion 22. A shaft 24 is fixedly connected to one side of the first mounting plate 5. The end of the shaft 24 away from the first mounting plate 5 is rotatably connected to the side of the second mounting plate 6 where the U-shaped rod 21 is located. Several springs 25 are respectively provided on both sides of the outer surface of the shaft 24. A ring 26 is fixedly connected to the upper and lower ends of each spring 25. The outer surfaces of the shaft 24 are... Each spring 25 passes through the slot 23 of the protrusion 22 on the outer surface of the two U-shaped rods 21. The end of the spring 25 near the shaft 24 is fixedly connected to the outer surface of the shaft 24 through a ring 26, and the ring 26 at the end of the spring 25 away from the shaft 24 abuts against the outer surfaces of both ends of the U-shaped rod 21. By setting the shaft 24, during the operation of the self-unloading device, the weight on both sides of the container may change differently when the cargo inside the container is unloaded. When the weight on both sides of the container is uneven, the second connecting plate will slowly rotate from one side of the first connecting plate to the side with the heavier weight through the shaft 24. Simultaneously, the spring 25 located between the two ends of the U-shaped rod 21 on the side shaft 24 will be compressed, and the spring 25 on the other side of the shaft 24 will be stretched, allowing the frame plate 1 and the container to tilt to the left or right relative to the first connecting plate and the hydraulic rod 4. When the cargo inside the container is unloaded and the weight is balanced, the compressed spring 25 and the stretched spring 25 will return to their original state and push the frame plate 1 to rotate in the original direction, so that the frame plate 1 returns to the balanced state. By setting the buffer device 2 and by setting the shaft 24 between the first mounting plate 5 and the second mounting plate 6, the first mounting plate 5 and the second mounting plate 6 are connected by the shaft 24. The fixed connection between the two sides is converted into a rotating connection. When the weight on both sides of the container is uneven during unloading, the second connecting plate will slowly rotate from one side of the first connecting plate to the side with the heavier weight through the shaft 24. The rotation of the shaft 24 is buffered by the compression and extension springs 25, so that the frame plate 1 and the container can be tilted to the left or right relative to the first connecting plate and the hydraulic rod 4. This avoids the connection between the hydraulic rod 4 and the frame plate 1 being subjected to a large lateral deflection force when the weight of the container is uneven, which would cause fatigue damage to the connection and affect the stability of the connection structure between the connection and the frame plate 1.

[0032] Reference Figure 2-6As shown in this embodiment: rubber rings 27 are fixedly connected to the inner walls of the two shaft grooves 7 respectively. The inner edges of the rubber rings 27 are arc-shaped. After the connecting rod on the semi-trailer is inserted into the shaft grooves 7 on both sides of the frame plate 1, when the frame plate 1 tilts during the rotation of the connecting rod, it will squeeze the rubber rings 27 inside the shaft grooves 7, so that the frame plate 1 can rotate and tilt normally outside the connecting rod. Reinforcing rings 212 are fixedly connected to both sides of the frame plate 1 near the shaft grooves 7. The two reinforcing rings 212 are located on the outside of the two rubber rings 27 respectively. By setting the rubber rings 27 inside the two reinforcing rings 212, the outer ring shape of the rubber rings 27 can be reinforced by the reinforcing rings 212, thereby improving the durability of the rubber rings 27.

[0033] Reference Figure 2-6 As shown in this embodiment: grooves 28 are respectively provided at the upper and lower ends of the outer surface of the shaft 24. Two rubber rods 29 are fixedly connected to one side of the second mounting plate 6. The two rubber rods 29 are respectively located inside the two grooves 28 on the outer surface of the shaft 24. When the shaft 24 rotates, the inner wall of the groove 28 contacts the rubber rod 29 and squeezes the rubber rod 29, further buffering the rotation of the shaft 24. Two positioning holes 210 are respectively provided at the upper and lower ends of the U-shaped rod 21. Two positioning rods 211 are fixedly connected to both sides of the outer surface of the shaft 24. When the shaft 24 rotates on one side of the second mounting plate 6, the positioning rods 211 will move inside the positioning holes 210. When one side of the positioning rod 211 contacts the inner wall of the positioning hole 210, the shaft 24 cannot continue to rotate. The rotation range and angle of the shaft 24 can be limited by the positioning rods 211.

[0034] Reference Figure 2-6 As shown in this embodiment: a positioning ring 213 is fixedly connected to the end of the shaft 24 away from the first mounting plate 5. One side of the positioning ring 213 slides on the side of the two U-shaped rods 21 away from the first mounting plate 5. When the shaft 24 rotates, one side of the positioning ring 213 will slide on the side of the two U-shaped rods 21. The positioning ring 213 can further limit the angle between the shaft 24 and the first mounting plate 5, and avoid the angle between the second mounting plate 6 and the first mounting plate 5 as much as possible. A support rod 214 is fixedly connected to the side of the U-shaped rod 21 away from the protrusion 22. The end of the support rod 214 away from the U-shaped rod 21 rests on the outer surface of the first mounting plate 5. Several through holes are opened at the end of the support rod 214 near the first mounting plate 5. When the first mounting plate 5 is installed on the outer surface of the frame plate 1, the fasteners are also passed through the through holes on the outer surface of the support rod 214. The support rod 214 can support and reinforce the connection structure between the U-shaped rod 21 and the first mounting plate 5.

[0035] Working principle: When installing the self-unloading device, the connecting rods on the semi-trailer are respectively inserted into the two shaft grooves 7 at one end of the frame plate 1. The bottom end of the bottom plate 3 is connected to the frame of the semi-trailer with fasteners. Fasteners are used to pass through the mounting holes on the outer surface of the second mounting plate 6 to connect the second mounting plate 6 to the frame plate 1. The container is placed on the outer surface of the frame plate 1 and fixed to the container with pins passing through the through holes on the outer surface of the frame plate 1. When the self-unloading device is working, the hydraulic rod 4 is slowly extended. During the extension of the output rod of the hydraulic rod 4, it will rotate on one side of the first mounting plate 5. At the same time, the bottom end of the hydraulic rod 4 will rotate on the outer surface of the bottom plate 3. The output rod of the hydraulic rod 4 pushes the end of the frame plate 1 with the shaft groove 7 to rotate upward on the outer surface of the connecting rod, causing the container on the frame plate 1 to tilt and unload the material inside the container. When the cargo is unloaded, the weight on both sides of the container may change differently. When the weight on both sides of the container is uneven, the second connecting plate will slowly rotate on one side of the first connecting plate towards the heavier side via the shaft 24. At the same time, it will compress the spring 25 located between the two ends of the U-shaped rod 21 on the shaft 24 on that side. The spring 25 on the other side of the shaft 24 will be stretched, so that the frame plate 1 and the container can tilt to the left or right relative to the first connecting plate and the hydraulic rod 4. When the cargo inside the container is unloaded and the weight is balanced, the compressed spring 25 and the stretched spring 25 will return to their original state and push the frame plate 1 to rotate in the original direction, so that the frame plate 1 returns to the balanced state. After unloading is completed, the hydraulic rod 4 retracts, and the output rod of the hydraulic rod 4 pulls the frame plate 1 downward to slowly return to the surface of the semi-trailer frame.

[0036] 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 container transport semi-trailer self-unloading device, comprising a frame (1) and a bottom plate (3), characterized in that: The outer surface of the frame plate (1) is L-shaped. Two shaft grooves (7) are opened at one end of the frame plate (1) for inserting the connecting rod of the semi-trailer into the shaft groove (7) and connecting it to the frame plate (1). Several through holes are opened on the outer surface of the frame plate (1). The specifications of the through holes are the same as the specifications of the pin holes for connecting the container on the semi-trailer. A hydraulic rod (4) is rotatably provided on the outer surface of the bottom plate (3). A first mounting plate (5) is rotatably provided on the outer side of the output rod of the hydraulic rod (4). A second mounting plate (6) is connected to one side of the first mounting plate (5) through a buffer device (2). Several mounting holes are opened at both ends of the outer surface of the second mounting plate (6).

2. The container transport semi-trailer self-unloading device according to claim 1, characterized in that: The buffer device (2) includes two U-shaped rods (21). One side of each U-shaped rod (21) is fixedly connected to both ends of the outer surface of the second mounting plate (6). Two protrusions (22) are fixedly connected to one side of each U-shaped rod (21). A through groove (23) is provided on the outer surface of each protrusion (22). A shaft (24) is fixedly connected to one side of the first mounting plate (5). The end of the shaft (24) away from the first mounting plate (5) is rotatably connected to the side of the second mounting plate (6) where the U-shaped rod (21) is located. Several springs (25) are provided on both sides of the outer surface of the shaft (24). The upper and lower ends of the springs (25) are fixedly connected to the rings (26). Each spring (25) on both sides of the outer surface of the shaft (24) passes through the through groove (23) of the protrusion (22) on the outer surface of the two U-shaped rods (21). The end of the spring (25) close to the shaft (24) is fixedly connected to the outer surface of the shaft (24) through the ring (26). The ring (26) at the end of the spring (25) away from the shaft (24) abuts against the outer surfaces of both ends of the U-shaped rod (21).

3. The container transport semi-trailer self-unloading device according to claim 2, characterized in that: The inner walls of the two shaft grooves (7) are respectively fixedly connected with rubber rings (27), and the inner walls of the rubber rings (27) are arc-shaped at both sides.

4. The container transport semi-trailer self-unloading device according to claim 3, characterized in that: The two sides of the frame plate (1) are fixedly connected with reinforcing rings (212) near the shaft groove (7), and the two reinforcing rings (212) are located on the outside of the two rubber rings (27).

5. The container transport semi-trailer self-unloading device according to claim 4, characterized in that: The outer surface of the shaft (24) is provided with grooves (28) at both the upper and lower ends. Two rubber rods (29) are fixedly connected to one side of the second mounting plate (6). The two rubber rods (29) are located inside the two grooves (28) on the outer surface of the shaft (24).

6. The container transport semi-trailer self-unloading device according to claim 5, characterized in that: Two positioning holes (210) are respectively opened at the upper and lower ends of the U-shaped rod (21), and two positioning rods (211) are respectively fixedly connected to the outer surface of the shaft (24).

7. The container transport semi-trailer self-unloading device according to claim 6, characterized in that: A positioning ring (213) is fixedly connected to one end of the shaft (24) away from the first mounting plate (5), and one side of the positioning ring (213) slides on the side of the two U-shaped rods (21) away from the first mounting plate (5).

8. The container transport semi-trailer self-unloading device according to claim 7, characterized in that: A support rod (214) is fixedly connected to the side of the U-shaped rod (21) away from the protrusion (22). The end of the support rod (214) away from the U-shaped rod (21) rests on the outer surface of the first mounting plate (5). Several through holes are opened at the end of the support rod (214) close to the first mounting plate (5).

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