A carriage for a semitrailer and a semitrailer

Abstract

The utility model provides a kind of semitrailer for carriage and semitrailer, belong to semitrailer technical field, including carriage body, transmission mechanism and control mechanism, the inside of carriage body is equipped with partition, partition both sides are equipped with left chamber and right chamber, left chamber is equipped with left door, and right chamber is equipped with right door;Transmission mechanism is two, both are equipped on carriage body, two transmission mechanisms are respectively connected with left door and right door transmission;Control mechanism is equipped on carriage body, control mechanism is connected with two transmission mechanisms transmission.The semitrailer for carriage provided by the utility model, the inside space of carriage body is divided into left chamber and right chamber by partition, different goods are loaded in left chamber and right chamber respectively, prevent two kinds of goods from mixing, to improve unloading efficiency;While by means of control mechanism and transmission mechanism, the opening and closing of left door and right door are controlled, without manually opening, to reduce unnecessary physical consumption.

Description

Technical Field

[0001] This invention belongs to the field of semi-trailer technology, specifically relating to a semi-trailer body and a semi-trailer. Background Technology

[0002] Semi-trailers are a common mode of transportation, using a cargo box to load and pull goods. They are generally used to transport sand, gravel, coal, etc. Currently, most semi-trailer cargo boxes are of an integrated structure, with only one storage space inside. This means that existing semi-trailer cargo boxes can only transport one type of goods. When transporting a small amount of goods, this results in a waste of the empty space inside the cargo box. When the empty space is used to load other goods, the cargo box shakes during transportation due to road bumps, causing different goods to mix. This requires workers to re-sort the goods during unloading, affecting unloading efficiency. Summary of the Invention

[0003] This invention provides a semi-trailer cargo box and a semi-trailer to solve the technical problem in the prior art where different goods are easily mixed when loaded in the cargo box, resulting in low unloading efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a semi-trailer cargo box, comprising:

[0005] The body is used to be installed on the chassis of a semi-trailer; the interior of the body is provided with a partition plate that runs along the length of the body, and a left chamber and a right chamber are respectively provided on both sides of the partition plate; the left chamber is provided with a left door for opening or closing the left chamber on the side away from the partition plate, and the right chamber is provided with a right door for opening or closing the right chamber on the side away from the partition plate;

[0006] There are two transmission mechanisms, both of which are located on the carriage body; the two transmission mechanisms are respectively connected to the left and right doors to drive the left and right doors to open or close the left and right chambers.

[0007] A control mechanism is located on the carriage body and below the two transmission mechanisms; the control mechanism is connected to the two transmission mechanisms and is used to control the independent opening and closing or synchronous opening and closing of the left and right doors.

[0008] In one possible implementation, the transmission mechanism includes a support plate, a screw, a lifting plate, and a transmission component; the support plate is fixed to the outer side of the carriage body and located between the left and right doors; the screw is vertically mounted on the support plate and rotatably connected to it; a lifting groove corresponding to the screw is provided on the side of the carriage body, the lifting plate is slidably connected to the lifting groove, the lifting plate is fixedly connected to the left or right door, the screw passes through the lifting plate and is threadedly connected to it; the transmission component is located on the side of the carriage body and is tractively connected to the screw, for driving the screw to rotate.

[0009] In one possible implementation, the transmission component includes two bevel gears, a rotating rod, and a fixed plate; the two bevel gears are disposed on the support plate and rotatably connected to the support plate, and the screw is fixedly connected to the corresponding bevel gear; the fixed plate is fixedly disposed on the side of the carriage body and located on the side of the bevel gear away from the screw; the rotating rod is arranged laterally and passes through the fixed plate and is fixedly connected to the corresponding bevel gear, and the rotating rod is rotatably connected to the fixed plate.

[0010] In one possible implementation, the control mechanism includes two first gears, a support plate, a control rod, two second gears, and a driver; the two first gears are respectively fixed on the two rotating rods; the support plate is fixed on the side of the carriage body and located below the first gears; the control rod is arranged laterally and slides through the support plate, and is rotatably connected to the support plate; the two second gears are both disposed on the control rod, and are arranged in parallel and spaced apart, with each second gear meshing with a corresponding first gear; the thickness of the second gear is twice the thickness of the first gear, and the distance between the two second gears is equal to the distance between the two first gears; the driver is disposed on the carriage body, and its free end is connected to the control rod for driving the control rod to rotate.

[0011] In one possible implementation, one end of the control lever has a rotating groove, and the free end of the driver extends into the rotating groove and is slidably connected to the rotating groove.

[0012] In one possible implementation, the end of the control lever away from the driver is further provided with a control section, and the control section extends to the body of the carriage. The control section has three parallel and spaced circular grooves in the circumferential direction, and the distance between the three circular grooves is equal to the thickness of the first gear. The control section is also provided with a control element, which corresponds to the circular grooves and is used to control the degree of freedom of the control lever in the horizontal direction.

[0013] In one possible implementation, the control component includes a limiting block, multiple ball bearings, and multiple elastic elements; the limiting block is fixed to the side of the carriage body, and the limiting block has a limiting hole and multiple limiting grooves arranged circumferentially along the limiting hole; the control segment passes through the limiting hole and is slidably connected to the limiting hole; the multiple ball bearings correspond one-to-one with the multiple limiting grooves, the ball bearings are disposed in the limiting grooves, and one end of the ball bearings extends out of the limiting grooves and is slidably connected to the circular grooves; the multiple elastic elements are respectively disposed in the corresponding multiple limiting grooves, and both ends are fixedly connected to the ball bearings and the inner walls of the limiting grooves, respectively.

[0014] In one possible implementation, the carriage body is further provided with two unloading components, which are respectively located in the left chamber and the right chamber, for moving goods from the left chamber or the right chamber to the outside of the carriage body.

[0015] In one possible implementation, the unloading assembly includes a support frame, a drive unit, and multiple rotating rollers; the support frame is located on the side of the carriage body near the transmission mechanism, and the support frame has a support cavity; the drive unit is located inside the support cavity; the multiple rotating rollers are arranged in a row at an incline, with the higher end of each rotating roller corresponding to the partition plate; one end of each rotating roller extends into the support cavity and is rotatably connected to the inner wall of the support cavity, and the other end is rotatably connected to the inner wall of the carriage body; the drive unit is drively connected to the rotating rollers and is used to drive the rotating rollers to rotate.

[0016] The beneficial effects of the semi-trailer body provided by this invention are as follows: Compared with the prior art, when loading goods into the semi-trailer body, the body has a partition plate inside that runs parallel to the length of the body. Therefore, different goods can be loaded into the left and right chambers respectively, without mixing due to shaking of the body. When the body is parked at the unloading position and the left chamber needs to be opened, the control mechanism opens the transmission mechanism connected to the left door and closes another transmission mechanism. The transmission mechanism drives the left door to move and open the corresponding left chamber, thereby unloading the goods from the left chamber. When the right chamber needs to be opened, the control mechanism opens the transmission mechanism connected to the right door. The control mechanism also closes the other transmission mechanism, which drives the right side door to move and open the corresponding right chamber, thereby unloading the goods in the right chamber. The control mechanism can also control the two transmission mechanisms to open simultaneously, thereby opening the left and right chambers synchronously, allowing the goods in the left and right chambers to be unloaded at the same time. In this way, the internal space of the carriage body is divided into left and right chambers by a partition plate, and different goods are loaded in the left and right chambers respectively, preventing the two types of goods from mixing during transportation and improving unloading efficiency. At the same time, the control mechanism and the two transmission mechanisms can control the opening and closing of the left and right side doors separately, as well as control the synchronous start and closing of the left and right side doors, so that workers can directly unload the goods and reduce unnecessary physical exertion.

[0017] Another object of the present invention is to provide a semi-trailer, including any of the above-described semi-trailer cargo boxes.

[0018] The semi-trailer provided by this invention uses a semi-trailer body and divides the internal space of the body into a left and right compartment with the help of a partition. Different goods are loaded in the left and right compartments respectively, preventing the two types of goods from mixing during transportation, thereby improving unloading efficiency. At the same time, with the help of a control mechanism and two transmission mechanisms, the opening and closing of the left and right compartment doors can be controlled separately, as well as the synchronous start and closing of the left and right compartment doors, so that workers can directly unload the goods and reduce unnecessary physical exertion. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the carriage structure provided in an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the carriage structure provided in an embodiment of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the carriage structure provided in an embodiment of the present invention. Figure 3 ;

[0023] Figure 4 This is a schematic diagram illustrating the connection between the carriage body and the partition plate provided in an embodiment of the present invention. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the connection between the transmission mechanism and the control mechanism provided in an embodiment of the present invention. Figure 1 ;

[0025] Figure 6 This is a schematic diagram illustrating the connection between the carriage body and the partition plate provided in an embodiment of the present invention. Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the connection between the transmission mechanism and the control mechanism provided in an embodiment of the present invention. Figure 2 ;

[0027] Figure 8 This is a schematic diagram illustrating the connection between the carriage body and the partition plate provided in an embodiment of the present invention. Figure 3 ;

[0028] Figure 9 This is a schematic diagram of the connection between the transmission mechanism and the control mechanism provided in an embodiment of the present invention. Figure 3 ;

[0029] Figure 10 This is a schematic diagram illustrating the connection between the carriage body and the partition plate provided in an embodiment of the present invention. Figure 4 ;

[0030] Figure 11 This is a schematic diagram of the connection between the transmission mechanism and the control mechanism provided in an embodiment of the present invention. Figure 4 ;

[0031] Figure 12 for Figure 11 Enlarged view of point A in the middle;

[0032] Figure 13 for Figure 11 Enlarged view of point B in the middle;

[0033] Figure 14 This is a schematic diagram illustrating the connection between the carriage body and the unloading assembly provided in an embodiment of the present invention. Figure 1 ;

[0034] Figure 15 This is a schematic diagram illustrating the connection between the carriage body and the unloading assembly provided in an embodiment of the present invention. Figure 2 .

[0035] The following are the labeling elements in the figure:

[0036] 1. Carriage body; 11. Partition plate; 12. Left chamber; 13. Right chamber; 14. Left door; 15. Right door; 16. Lifting groove; 17. Guide plate; 2. Transmission mechanism; 21. Support plate; 22. Screw; 23. Lifting plate; 24. Transmission component; 241. Bevel gear; 242. Rotating rod; 243. Fixing plate; 3. Control mechanism; 31. First gear; 32. Support plate; 33. Control rod; 331. Rotating groove; 34. Second gear; 35. Driver; 36. Control section; 361. Circular groove; 4. Control component; 41. Limiting block; 411. Limiting hole; 412. Limiting groove; 42. Ball bearing; 43. Elastic component; 5. Unloading assembly; 51. Support frame; 511. Support cavity; 52. Drive component; 53. Rotating roller; 54. Conveyor belt; 6. Protective frame. Detailed Implementation

[0037] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Please see Figures 1 to 15 The present invention will now describe the semi-trailer body provided. A semi-trailer body includes a body 1, a transmission mechanism 2, and a control mechanism 3. The body 1 is mounted on the chassis of a semi-trailer. Inside the body 1 is a partition plate 11 aligned with the length of the body 1. A left chamber 12 and a right chamber 13 are respectively located on either side of the partition plate 11. A left door 14 for opening or closing the left chamber 12 is located on the side of the left chamber 12 away from the partition plate 11. A right chamber 13 for opening or closing is located on the side of the right chamber 13 away from the partition plate 11. The right side door 15; there are two transmission mechanisms 2, both located on the body 1 of the trailer. The two transmission mechanisms 2 are respectively connected to the left side door 14 and the right side door 15, and are used to drive the left side door 14 and the right side door 15 to open or close the left chamber 12 and the right chamber 13; the control mechanism 3 is located on the body 1 of the trailer and below the two transmission mechanisms 2. The control mechanism 3 is connected to the two transmission mechanisms 2 and is used to control the independent opening and closing or synchronous opening and closing of the left side door 14 and the right side door 15. A semi-trailer trailer also includes a protective frame 6, which is located on the outer side of the body 1 of the trailer and is used to protect the transmission mechanisms 2 and the control mechanism 3.

[0042] Compared with the prior art, the semi-trailer cargo box provided in this embodiment allows for the loading of different goods into the left and right chambers 13 respectively. This is because the cargo box body 1 has a partition 11 aligned with its length. The partition 11 prevents the cargo box body 1 from shaking and causing the two different goods to mix. When the cargo box body 1 is parked at the unloading position and the left chamber 12 needs to be opened, the control mechanism 3 controls the transmission mechanism 2, which is connected to the left door 14, to open and close the other transmission mechanism 2. The transmission mechanism 2 drives the left door 14 to move and open the corresponding left chamber 12, thereby unloading the goods from the left chamber 12. When the right chamber 13 needs to be opened, the control mechanism 3 controls the transmission mechanism 2, which is connected to the right door 15, to open and close the other transmission mechanism 2. The transmission mechanism 2 drives the right side door 15 to move and open the corresponding right chamber 13, thereby unloading the goods in the right chamber 13. The control mechanism 3 can also control the two transmission mechanisms 2 to open simultaneously, thereby opening the left chamber 12 and the right chamber 13 synchronously, and unloading the goods in the left chamber 12 and the right chamber 13 simultaneously. In this way, the internal space of the carriage body 1 is divided into the left chamber 12 and the right chamber 13 by means of the partition plate 11, and different goods are loaded in the left chamber 12 and the right chamber 13 respectively, preventing the two types of goods from mixing during transportation, thereby improving unloading efficiency. At the same time, the control mechanism 3 and the two transmission mechanisms 2 can control the opening and closing of the left side door 14 and the right side door 15 separately, as well as control the synchronous start and closing of the left side door 14 and the right side door 15, so that workers can unload the goods directly without manual opening, reducing unnecessary physical exertion.

[0043] Please see Figures 1 to 11As a specific embodiment of the semi-trailer body provided by the present invention, the transmission mechanism 2 includes a support plate 21, a screw 22, a lifting plate 23, and a transmission component 24. The support plate 21 is fixedly disposed on the outer side of the body 1 and located between the left door 14 and the right door 15. The screw 22 is vertically disposed on the support plate 21 and rotatably connected to the support plate 21. A lifting groove 16 corresponding to the screw 22 is opened on the side of the body 1. The lifting plate 23 is slidably connected to the lifting groove 16 and fixedly connected to the left door 14 or the right door 15. The screw 22 passes through the lifting plate 23 and is threadedly connected to the lifting plate 23. The transmission component 24 is disposed on the side of the body 1 and is drively connected to the screw 22 for driving. When the screw 22 rotates, the control mechanism 3 controls the transmission component 24 to rotate, which in turn drives the screw 22 to rotate. Since the screw 22 passes through the lifting plate 23 and is threadedly connected to it, and the two lifting plates 23 of the two transmission mechanisms 2 are fixedly connected to the left door 14 and the right door 15 respectively, and the side of the carriage body 1 is provided with a lifting groove 16, and the lifting plate 23 is slidably connected to the lifting groove 16, the screw 22 drives the lifting plate 23 to rise, and the lifting plate 23 drives the corresponding left door 14 or right door 15 to rise, thereby opening the left chamber 12 or the right chamber 13; the support plate 21 is used to realize the vertical setting of the screw 22 and the rotation of the screw 22.

[0044] Please see Figures 1 to 11 As a specific embodiment of the semi-trailer cargo box provided by the present invention, the transmission component 24 includes two bevel gears 241, a rotating rod 242, and a fixing plate 243. The two bevel gears 241 are mounted on the support plate 21 and are rotatably connected to the support plate 21. The screw 22 is fixedly connected to the corresponding bevel gear 241. The fixing plate 243 is fixedly mounted on the side of the cargo box body 1 and is located on the side of the bevel gear 241 away from the screw 22. The rotating rod 242 is arranged horizontally and passes through the fixing plate 243 and is fixedly connected to the corresponding bevel gear 241. The rotating rod 242 is rotatably connected to the fixing plate 243. When the control mechanism 3 controls the transmission mechanism 2 to open, it drives the rotating rod 242 to rotate. Since the rotating rod 242 is arranged horizontally, the two bevel gears 241 are used to make the rotating rod 242 drive the vertically arranged screw 22 to rotate, thereby driving the left cargo door 14 or the right cargo door 15 to open. The fixing plate 243 is used to realize the horizontal arrangement of the rotating rod 242 and the rotation of the rotating rod 242.

[0045] Please see Figures 4 to 11As a specific embodiment of the semi-trailer cargo box provided by the present invention, the control mechanism 3 includes two first gears 31, two second gears 34, a support plate 32, a control rod 33, and a driver 35. The two first gears 31 are respectively fixed on two rotating rods 242. The support plate 32 is fixed to the side of the cargo box body 1 and located below the first gears 31. The control rod 33 is arranged laterally and slides through the support plate 32, rotatably connected to it. The two second gears 34 are both mounted on the control rod 33 and are arranged parallel and spaced apart. Each second gear 34 meshes with a corresponding first gear 31. The thickness of each second gear 34 is twice the thickness of the first gear 31. The distance between the two second gears 34 is equal to the distance between the two first gears 31. The driver 35 is mounted on the carriage body 1, and its free end is connected to the control lever 33 for driving the control lever 33 to rotate. The driver 35 is a motor. When the left carriage door 14 is opened, the control lever 33 is pushed to move towards the left carriage door 14 until the second gear 34 meshes with the first gear 31 connected to the left carriage door 14. The driver 35 is then activated, and the driver 35 drives the control lever 33 to rotate. Since the second gear 34 is fixed on the control lever 33, and the control lever 33 passes through the support plate 32 and is slidably connected to the support plate 32, while the control lever 33 is rotatably connected to the support plate 32, the control lever 33 drives the second gear 34 to rotate. The second gear 34 meshes with the first gear 31, and the first gear 31 is fixedly connected to the rotating rod 242, which is connected to the left side door 14. The second gear 34 is misaligned with the first gear 31, which is connected to the right side door 15. Therefore, the second gear 34 drives the first gear 31 to rotate, which in turn drives the rotating rod 242 to rotate, thus opening the left side door 14. When the left side door 14 and right side door 15 open synchronously, since the thickness of the second gear 34 is twice the thickness of the first gear 31, and the distance between the two second gears 34 is equal to the distance between the two first gears 31, the control rod 33 is pushed towards the left side door 14, moving a distance equal to the thickness of one first gear 31. At this time, the two second gears 34 mesh with the two first gears 31 respectively. When the wheel 31 is engaged, the driver 35 is activated. The driver 35 drives the control lever 33 to rotate, which in turn drives the two second gears 34 to rotate, and drives the two first gears 31 to rotate synchronously, thereby opening the left compartment door 14 and the right compartment door 15 simultaneously. When the right compartment door 15 is opened, the control lever 33 is pushed towards the left compartment door 14, and moves the two first gears 31 by a distance equal to the thickness of the lever. At this time, the second gear 34 is engaged with the first gear 31 that is connected to the right compartment door 15, and the other second gear 34 is misaligned with the first gear 31 that is connected to the left compartment door 14. The driver 35 is activated, and the driver 35 drives the control lever 33 to rotate, which in turn drives the second gear 34 to rotate, and drives the first gear 31 to rotate synchronously, thereby opening the right compartment door 15.

[0046] Please see Figure 11 and Figure 13 As a specific embodiment of the semi-trailer cargo box provided by the present invention, a rotating groove 331 is provided at one end of the control lever 33, and the free end of the driver 35 extends into the rotating groove 331 and is slidably connected with the rotating groove 331; the rotating groove 331 is a square groove, and the free end of the driver 35 is a square structure adapted to the rotation operation, so when the control lever 33 is pushed to move, it does not affect the driver 35 driving the control lever 33 to rotate.

[0047] Please see Figure 11 and Figure 12 As a specific embodiment of the semi-trailer cargo box provided by the present invention, the end of the control lever 33 away from the driver 35 is also provided with a control section 36, and the control section 36 extends to the outside of the cargo box body 1. The control section 36 has three parallel and spaced circular grooves 361 in the circumferential direction, and the distance between the three circular grooves 361 is equal to the thickness of the first gear 31. The control section 36 is also provided with a control member 4, which corresponds to the circular grooves 361 and is used to control the degree of freedom of movement of the control lever 33 in the horizontal direction. When the control lever 33 is pushed to move, the control section 36 is used to facilitate the movement of the control lever 33. When the control member 4 restricts the movement of the control lever 33, it restricts the movement of the three circular grooves 361 to achieve the limit of the control lever 33 and prevent the control lever 33 from moving arbitrarily.

[0048] Please see Figure 11 and Figure 12 As a specific embodiment of the semi-trailer body provided by the present invention, the control component 4 includes a limiting block 41, multiple balls 42, and multiple elastic elements 43. The limiting block 41 is fixed to the side of the body 1. The limiting block 41 has a limiting hole 411 and multiple limiting grooves 412 arranged circumferentially along the limiting hole 411. The control section 36 passes through the limiting hole 411 and is slidably connected to the limiting hole 411. The multiple balls 42 correspond one-to-one with the multiple limiting grooves 412. The balls 42 are disposed in the limiting grooves 412, and one end of the balls 42 extends out of the limiting grooves 412 and is slidably connected to the circular grooves 361. The multiple elastic elements 43... 3. The control element 4 is located within multiple corresponding limiting grooves 412, with both ends fixedly connected to the ball bearing 42 and the inner wall of the limiting groove 412, respectively. When the control lever 33 is moved, the ball bearing 42 retracts into the limiting groove 412 and compresses the elastic element 43 until the circular groove 361 corresponds to the ball bearing 42. At this point, the elastic element 43 resets and pushes the ball bearing 42 out of the limiting groove 412, so that the ball bearing 42 is locked in the circular groove 361, thereby restricting the movement of the control lever 33. Since the ball bearing 42 is slidably connected to the circular groove 361, the control element 4 restricts the movement of the control lever 33 without affecting its rotation. The elastic element 43 is a spring.

[0049] Please see Figure 14 and Figure 15 As a specific embodiment of the semi-trailer carriage provided by the present invention, the carriage body 1 is also provided with two unloading components 5, which are respectively located in the left chamber 12 and the right chamber 13, for moving goods from the left chamber 12 or the right chamber 13 to the outside of the carriage body 1; with the help of the unloading components 5 located in the left chamber 12 and the right chamber 13, the goods can be unloaded quickly to improve the unloading efficiency of workers.

[0050] Please see Figure 14 and Figure 15 As a specific embodiment of the semi-trailer cargo box provided by the present invention, the unloading assembly 5 includes a support frame 51, a driving component 52, and multiple rotating rollers 53. The support frame 51 is located on the side of the cargo box body 1 near the transmission mechanism 2. The support frame 51 has a support cavity 511. The driving component 52 is located inside the support cavity 511. The multiple rotating rollers 53 are arranged in a row at an angle, and the higher end of the rotating rollers 53 corresponds to the partition plate 11. One end of the rotating roller 53 extends into the support cavity 511 and is rotatably connected to the inner wall of the support cavity 511, and the other end is connected to... The inner wall of the carriage body 1 is rotatably connected, and the drive unit 52 is connected to the rotating roller 53 for driving the rotating roller 53 to rotate. Since multiple rotating rollers 53 are arranged in a row at an incline, and the higher end of the rotating roller 53 corresponds to the partition plate 11, when unloading goods, the drive unit 52 controls the rotating roller 53 to rotate, and the goods leave the carriage body 1 quickly under the rotation of the rotating roller 53. The drive unit 52 is a motor, and both the free end of the motor and one end of the rotating roller 53 are provided with gears, and the two gears are connected by a chain drive.

[0051] Not shown in the figure, this embodiment of the invention also provides a semi-trailer, which includes any of the semi-trailer cargo boxes described above.

[0052] The semi-trailer provided by this invention uses a semi-trailer body and divides the internal space of the body 1 into a left chamber 12 and a right chamber 13 by means of a partition plate 11. Different goods are loaded in the left chamber 12 and the right chamber 13 respectively, preventing the two types of goods from mixing during transportation, thereby improving unloading efficiency. At the same time, with the help of the control mechanism 3 and two transmission mechanisms 2, the opening and closing of the left door 14 and the right door 15 can be controlled respectively, as well as the synchronous start and closing of the left door 14 and the right door 15, so that workers can directly unload the goods and reduce unnecessary physical exertion.

[0053] Please see Figure 14 and Figure 15As a specific embodiment of the semi-trailer carriage provided by the present invention, the unloading assembly 5 also includes a conveyor belt 54. The conveyor belt 54 is arranged circumferentially around a plurality of rotating rollers 53 and is connected to the rotating rollers 53 in a transmission manner. When unloading goods such as sand, small sand particles can easily get stuck between adjacent rotating rollers 53, affecting the rotation of the rotating rollers 53. Therefore, the conveyor belt 54 is arranged circumferentially around a plurality of rotating rollers 53, and the goods are moved outside the carriage body 1 by means of the inclined conveyor belt 54. At the same time, the conveyor belt 54 can also be supported by the plurality of rotating rollers 53 arranged in rows, preventing the conveyor belt 54 from being unable to transport sand due to excessive weight.

[0054] Please see Figure 4 , Figure 6 , Figure 8 and Figure 10 As a specific embodiment of the semi-trailer cargo box provided by the present invention, a guide plate 17 is provided in the left chamber 12. The guide plate 17 is fixedly connected to the inner wall of the left chamber 12 and is located above the unloading assembly 5. The left door 14 is slidably connected to the guide plate 17. A guide plate 17 is provided in the right chamber 13. The guide plate 17 is fixedly connected to the inner wall of the right chamber 13 and is located above the unloading assembly 5. The right door 15 is slidably connected to the guide plate 17. With the help of the guide plate 17 slidably connected to the left door 14 and the right door 15, the sliding of the left door 14 and the right door 15 is more stable.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A semi-trailer cargo box, characterized in that, include: The body is used to be installed on the chassis of a semi-trailer; the interior of the body is provided with a partition plate that runs along the length of the body, and a left chamber and a right chamber are respectively provided on both sides of the partition plate; the left chamber is provided with a left door for opening or closing the left chamber on the side away from the partition plate, and the right chamber is provided with a right door for opening or closing the right chamber on the side away from the partition plate; Two transmission mechanisms are provided, both mounted on the carriage body. Each transmission mechanism is connected to the left and right side doors respectively, driving the left and right side doors to open or close the left and right chambers. Each transmission mechanism includes a support plate, a screw, a lifting plate, and a transmission component. The support plate is fixed to the outer side of the carriage body and located between the left and right side doors. The screw is vertically mounted on the support plate and rotatably connected to it. A lifting groove corresponding to the screw is provided on the side of the carriage body. The lifting plate is slidably connected to the lifting groove and fixedly connected to either the left or right side door. The screw passes through the lifting plate and is threadedly connected to it. The transmission component is located on the side of the carriage body and is connected to the screw, driving the screw to rotate. The transmission component includes two bevel gears, a rotating rod, and a fixed plate. Two bevel gears are mounted on the support plate and rotatably connected to the support plate; the screw is fixedly connected to the corresponding bevel gear; the fixing plate is fixedly mounted on the side of the carriage body and located on the side of the bevel gear away from the screw; the rotating rod is arranged laterally and passes through the fixing plate and is fixedly connected to the corresponding bevel gear; the rotating rod is rotatably connected to the fixing plate. A control mechanism is mounted on the carriage body and located below the two transmission mechanisms. The control mechanism is connected to the two transmission mechanisms and is used to control the independent or synchronous opening and closing of the left and right doors. The control mechanism includes two first gears, a support plate, a control rod, two second gears, and a driver. The two first gears are respectively fixed to the two rotating rods. The support plate is fixed to the side of the carriage body and located below the first gears. The control rod is horizontally arranged and slides through the support plate, and is rotatably connected to the support plate. Both second gears are mounted on the control rod and are arranged parallel and spaced apart. Each second gear meshes with a corresponding first gear. The thickness of each second gear is twice the thickness of the first gear, and the distance between the two second gears is equal to the distance between the two first gears. The driver is mounted on the carriage body, and its free end is connected to the control rod to drive the control rod to rotate. The control lever is further provided with a control section at the end away from the driver, and the control section extends to the body of the carriage. The control section has three parallel and spaced circular grooves in the circumferential direction, and the distance between the three circular grooves is equal to the thickness of the first gear. The control section is also provided with a control component, which corresponds to the circular grooves and is used to control the degree of freedom of the control lever in the horizontal direction.

2. The semi-trailer cargo box as described in claim 1, characterized in that, One end of the control lever has a rotating groove, and the free end of the driver extends into the rotating groove and is slidably connected to the rotating groove.

3. The semi-trailer cargo box as described in claim 1, characterized in that, The control component includes a limiting block, multiple ball bearings, and multiple elastic elements. The limiting block is fixed to the side of the carriage body and has a limiting hole and multiple limiting grooves arranged circumferentially along the limiting hole. The control segment passes through the limiting hole and is slidably connected to the limiting hole. Each ball bearing corresponds to one of the multiple limiting grooves. The ball bearing is disposed in the limiting groove, and one end of the ball bearing extends out of the limiting groove and is slidably connected to the circular groove. Each elastic element is disposed in the corresponding multiple limiting grooves, and both ends are fixedly connected to the ball bearing and the inner wall of the limiting groove, respectively.

4. A semi-trailer cargo box as described in claim 1, characterized in that, The carriage body is also provided with two unloading components, which are respectively located in the left chamber and the right chamber, for moving goods from the left chamber or the right chamber to the outside of the carriage body.

5. A semi-trailer cargo box as described in claim 4, characterized in that, The unloading assembly includes a support frame, a drive component, and multiple rotating rollers; the support frame is located on the side of the carriage body near the transmission mechanism, and the support frame has a support cavity. The driving component is disposed in the support cavity; a plurality of rotating rollers are arranged in a row at an incline, and the higher end of the rotating roller corresponds to the partition plate. One end of the rotating roller extends into the support cavity and is rotatably connected to the inner wall of the support cavity, and the other end is rotatably connected to the inner wall of the carriage body. The driving component is connected to the rotating roller for driving the rotating roller to rotate.

6. A semi-trailer, characterized in that, Including a semi-trailer cargo box as described in any one of claims 1-5.

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