Sliding exchange fastening type integrated truck carriage

Abstract

The invention discloses a sliding exchange fastening type integrated boxcar, and belongs to the technical field of boxcars, the boxcar comprises an integrated box fixedly mounted at the top of a beam plate of a truck, sliding goods shelves are arranged at the left ends of the front side and the rear side of an inner cavity of the integrated box, and foldable goods shelves capable of sliding are arranged on the right sides of the sliding goods shelves. Goods are stored through cooperative use of the integration box, the sliding goods shelf and the folding goods shelf, meanwhile, the folding goods shelf can be folded and slide through cooperative use of a buckling assembly and a folding assembly, so that the goods loading and unloading positions of the sliding goods shelf and the folding goods shelf are changed, and meanwhile, through cooperative use of a fastening assembly, a tail door plate and an air cylinder, the goods loading and unloading positions are changed. And the position and the storage state of the folding goods shelf can be fastened, so that the up-and-down goods position can be changed, and the adaptability of carriage transportation work is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of freight car bodies, and in particular relates to a sliding exchange fastening type integrated freight car body. Background Art

[0002] The truck compartment is an important part of the truck. It is the carrying space for goods. Its structure and function directly affect the efficiency and quality of cargo transportation. It has a closed compartment, usually made of metal, composite materials, etc., with good sealing and protection. It can effectively protect the goods from the external environment (such as rain, dust, direct sunlight, etc.), and is suitable for transporting goods that are more sensitive to the environment, such as electronic products, food, medicines and precision instruments.

[0003] The shelves inside the truck compartment are generally customized and their use position is relatively fixed and cannot be adjusted. Since trucks usually load and unload goods from the rear of the compartment, the goods need to be transported long distances in the compartment during the loading and unloading process, which is cumbersome and time-consuming. Due to the limitations of the internal structure of the compartment, the order of loading and unloading goods is fixed, and it is also inconvenient to selectively load and unload the corresponding goods. For this reason, it is necessary to provide a sliding exchange and fastening integrated truck compartment, which adopts a sliding shelf structure, can facilitate the movement of the shelf to the designated loading and unloading position, and facilitate the loading and unloading of goods. At the same time, the tailgate synchronous fastening structure is adopted to limit the sliding rack and lock it, thereby improving its stability during use. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated truck compartment of a sliding exchangeable fastening type, which adopts a sliding shelf structure and can conveniently move the shelf to a designated loading and unloading position to facilitate loading and unloading of goods. At the same time, a tailgate synchronous fastening structure is adopted to limit and lock the sliding frame, thereby improving its stability during use to solve the above-mentioned technical problems.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a sliding exchange fastening type integrated truck compartment, the truck compartment includes an integrated box fixedly installed on the top of the truck beam plate: sliding shelves are arranged on the left ends of the front and rear sides of the inner cavity of the integrated box, and a slidable folding shelf is arranged on the right side of the sliding shelf, and a folding component is arranged on the front side of the folding shelf, and the folding component includes a rectangular sliding position opened on the front and rear sides of the bottom of the inner cavity of the integrated box, and the folding shelf is slidably connected to the inner cavity of the rectangular sliding position, and lifting arms are arranged at both ends of the opposite sides of the two folding shelves, and the inner cavity of the folding shelf is fixedly connected with a plurality of support seats, and the inner cavity of the support seat is rotatably connected with a storage plate, and the opposite side of the two lifting arms is rotatably connected with a plurality of connecting rods, and the storage plate is far One end of the support seat is welded to the connecting rod, and the bottom of the lifting arm is fixedly connected to a base foot, and buckling components are provided on both sides of the folding shelf, and the front and rear sides of the bottom of the inner cavity of the integrated box are provided with fastening components. The fastening components include a synchronous slide bar that runs from the right side of the integrated box to the inside of the integrated box, and the two sides of the top of the synchronous slide bar are fixedly connected with extrusion rods, and the front and rear sides of the bottom of the inner cavity of the integrated box are provided with rectangular slide grooves that are compatible with the extrusion rods, and one side of the surface of the base foot is provided with an arc-shaped groove that is compatible with the extrusion rod. A fixed shelf is fixedly installed on the left side of the inner cavity of the integrated box, and the right side of the truck beam plate is rotatably connected to the tailgate plate, and a rotatable cylinder is installed on the right end of the front and rear sides of the inner cavity of the integrated box, and the output end of the cylinder is rotatably connected to the tailgate plate.

[0006] Preferably, the snap-fit ​​assembly includes a fixing pin fixedly connected to the opposite sides of the two lifting arms, the surface of the fixing pin is rotatably connected to a limit lock, and both sides of the folding shelf are welded with limit pins adapted to the limit lock, and the limit lock is snapped onto the surface of the limit pin.

[0007] Preferably, a torsion spring is sleeved on the surface of the fixing pin, one end of the torsion spring is welded to the fixing pin, and the other end of the torsion spring is welded to the limiting lock buckle.

[0008] Preferably, a stop pin fixedly connected to the lifting arm is provided on the top of the limit lock buckle, and the bottom of the stop pin surface is tightly fitted with the limit lock buckle.

[0009] Preferably, a plurality of storage boxes are arranged in the inner cavity of the folding shelf, the front and rear sides of the bottom of the rectangular sliding inner cavity are fixedly connected to the first ground rail, and first pulleys are installed at both ends of the front and rear sides of the bottom of the folding shelf, and the first pulleys roll in contact with the surface of the first ground rail.

[0010] Preferably, a spring is sleeved on the right side of the surface of the synchronous slide rod, and both ends of the spring are respectively welded to the integrated box and the synchronous slide rod, and a roller is fixedly installed on the right side of the synchronous slide rod.

[0011] Preferably, fixing plates are welded to the bottom of both sides of the sliding shelves, the tops of the fixing plates are threadedly connected with threaded pins, and the bottom of the inner cavity of the integrated box is provided with threaded grooves matching the threaded pins.

[0012] Preferably, two wall-mounted guide rails are fixedly installed on the front and rear sides of the inner cavity of the integrated box, and the folding shelves are slidably connected to the surfaces of the wall-mounted guide rails.

[0013] Preferably, two second ground rails are laid on the front and rear sides of the bottom of the inner cavity of the integrated box, and second pulleys are fixedly installed on the front and rear ends of both sides of the bottom of the sliding shelf, and the second pulleys roll in contact with the surface of the second ground rails.

[0014] A method for exchanging and fastening a sliding exchange-fastening integrated truck compartment includes the following steps: Step 1: When loading goods, the user first opens the tailgate plate by opening the cylinder at the same time, and then the user rotates the lifting arm upward. The two lifting arms drive the connecting rod to move upward during the upward rotation, so that the multiple storage plates rotate in the inner cavity of the support seat, so that the surface of the limit lock buckle contacts the surface of the limit pin. Under the effect of the arc of the surface of the limit lock buckle and the limit pin, the limit lock buckle rotates with the fixed pin as the rotation center, so that the torsion spring is compressed until the storage plate rotates ninety degrees, and the surface of the lifting arm fits the surface of the folding shelf. At this time, under the elastic torsion of the torsion spring, the limit lock buckle rotates and resets and engages with the surface of the limit pin, so as to limit and tighten the lifting arm. At this time, the folding shelf is in a folded state. Then the user pushes the folding shelf to the left, so that the first pulley slides on the surface of the first ground rail. Step 2: After the foldable shelf moves to the leftmost side of the rectangular sliding cavity, the user rotates the threaded pin to release the limit on the sliding shelf and pushes the sliding shelf to the right so that the sliding shelf reaches the rightmost side of the integrated box cavity. At this time, the user loads goods into the cavity of the sliding shelf. After the loading of the sliding shelf is completed, the user pushes the sliding shelf to the left to reset the sliding shelf and rotates the threaded pin in the opposite direction to limit and tighten the sliding shelf. Then, the user pulls the foldable shelf to the right to reset the foldable shelf to the rightmost side of the integrated box cavity and toggle the limit lock buckle so that the limit lock buckle is separated from the surface of the limit pin. At this time, the lifting arm is released from the limit, and then the lifting arm is pulled to rotate and lower the storage plate until the bottom of the foot is completely in contact with the bottom of the integrated box cavity, and then the storage box containing goods is placed on the top of the storage plate. Step 3: Finally, the tailgate plate is closed by the cylinder. During the closing process of the tailgate plate, the left side of the tailgate plate contacts the surface of the roller and pushes the synchronous slide bar to slide to the left. During the sliding process, the synchronous slide bar drives the extrusion rod to move, so that the extrusion rod is engaged in the inner cavity of the arc-shaped slot, and the lifting arm is limited and fastened; During the unloading process, the goods in the inner cavity of the folding shelf can be unloaded first. After the goods in the inner cavity of the folding shelf are unloaded, the storage board can be folded and stored, and the folding shelf can be pushed to the leftmost side of the rectangular sliding cavity. Then the sliding shelf can be moved to the rightmost side of the integrated box cavity to unload the goods in its cavity.

[0015] The beneficial effects of the present invention are as follows: the present invention stores goods through the coordinated use of an integrated box, a sliding shelf and a folding shelf, and at the same time, through the coordinated use of a snap-fit ​​component and a folding component, the folding shelf can be folded and slid, thereby changing the upper and lower cargo positions of the sliding shelf and the folding shelf, and at the same time, through the coordinated use of a fastening component, a tailgate plate and a cylinder, the position and storage state of the folding shelf can be fastened, thereby achieving the ability to change the upper and lower cargo positions, improve the efficiency of loading and unloading cargo, and link the fastening shelves, thereby improving the adaptability of carriage transportation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein: Figure 1 A front cross-sectional view of an embodiment of the present invention; Figure 2 A three-dimensional schematic diagram of an integrated box, a sliding shelf and a folding shelf according to an embodiment of the present invention; Figure 3 An embodiment of the present invention Figure 2 A partial enlarged view of point A; Figure 4 It is a three-dimensional exploded view of an integrated box and a folding assembly according to an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of a sliding shelf according to an embodiment of the present invention; Figure 6 A three-dimensional schematic diagram of a folding shelf, a buckling assembly and a folding assembly according to an embodiment of the present invention; Figure 7 A three-dimensional schematic diagram of a folding shelf and a folding assembly according to an embodiment of the present invention; Figure 8 An embodiment of the present invention Figure 7 A partial enlarged view of point B in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Truck beam plate, 2. Integrated box, 3. Sliding shelf, 4. Folding shelf, 5. Buckle assembly, 51. Fixed pin, 52. Limit lock, 53. Limit pin, 54. Torsion spring, 55. Stop pin, 6. Folding assembly, 61. Rectangular slide, 62. Lifting arm, 63. Support seat, 64. Storage board, 65. Connecting rod, 66. Storage box, 67. First ground rail, 68. First pulley, 69. Base, 7. Fastening assembly, 71. Synchronous slide bar, 72. Extrusion rod, 73. Rectangular slide groove, 74. Arc slot, 75. Spring, 76. Roller, 8. Fixed shelf, 9. Tailgate plate, 10. Cylinder, 11. Fixed plate, 12. Threaded pin, 13. Wall-mounted guide rail, 14. Second pulley, 15. Second ground rail. DETAILED DESCRIPTION

[0018] Hereinafter, embodiments of an integrated freight car body of a sliding exchange fastening type according to the present invention will be described with reference to the accompanying drawings.

[0019] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0020] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0021] Embodiment 1: Figure 1-8The present invention shows a sliding exchange fastening integrated truck compartment of an embodiment of the present invention, which includes an integrated box 2 fixedly installed on the top of the truck beam 1: sliding shelves 3 are arranged on the left ends of the front and rear sides of the inner cavity of the integrated box 2, two wall-mounted guide rails 13 are fixedly installed on the front and rear sides of the inner cavity of the integrated box 2, and the folding shelves 4 are slidably connected to the surface of the wall-mounted guide rails 13, and two second ground rails 15 are laid on the front and rear sides of the bottom of the inner cavity of the integrated box 2. Second pulleys 14 are fixedly installed on the front and rear ends of both sides of the bottom of the sliding shelf 3, and the second pulleys 14 roll in contact with the surface of the second ground rails 15. Fixed plates 11 are welded to the bottoms of both sides of the sliding shelf 3, and threaded pins 12 are threadedly connected to the tops of the fixed plates 11. The bottom of the inner cavity of the integrated box 2 A threaded groove matched with the threaded pin 12 is provided, a slidable folding shelf 4 is provided on the right side of the sliding shelf 3, a folding assembly 6 is provided on the front side of the folding shelf 4, the folding assembly 6 includes a rectangular slide 61 provided on the front and rear sides of the bottom of the inner cavity of the integrated box 2, the folding shelf 4 is slidably connected to the inner cavity of the rectangular slide 61, lifting arms 62 are provided at both ends of the opposite sides of the two folding shelves 4, a plurality of support seats 63 are fixedly connected to the inner cavity of the folding shelf 4, a storage plate 64 is rotatably connected to the inner cavity of the support seat 63, a plurality of connecting rods 65 are rotatably connected to the opposite side of the two lifting arms 62, a plurality of storage boxes 66 are arranged in the inner cavity of the folding shelf 4, and a first ground rail 67 is fixedly connected to the front and rear sides of the bottom of the inner cavity of the rectangular slide 61, First pulleys 68 are installed at both ends of the front and rear sides of the bottom of the folding shelf 4. The first pulley 68 rolls in contact with the surface of the first ground rail 67. The first ground rail 67 and the first pulley 68 cooperate to support the folding shelf 4 while providing the folding shelf 4 with mobility, so that the folding shelf 4 can slide left and right in the inner cavity of the rectangular slide 61. The end of the storage plate 64 away from the support seat 63 is welded to the connecting rod 65. The bottom of the lifting arm 62 is fixedly connected with a foot 69. Both sides of the folding shelf 4 are provided with a buckling component 5. The front and rear sides of the bottom of the inner cavity of the integrated box 2 are provided with a fastening component 7. The fastening component 7 includes a synchronous slide rod 71 that runs from the right side of the integrated box 2 to the inside of the integrated box 2. The surface of the synchronous slide rod 71 The right side of the spring 75 is sleeved with a spring, and the two ends of the spring 75 are respectively welded to the integrated box 2 and the synchronous slide bar 71. The right side of the synchronous slide bar 71 is fixedly installed with a roller 76. The setting of the spring 75 plays an elastic pushing role on the synchronous slide bar 71, so that the synchronous slide bar 71 can actively drive the extrusion rod 72 to slide to the right when it is not squeezed, thereby releasing the limit of the bottom foot 69. At the same time, under the action of the roller 76, the right end of the synchronous slide bar 71 rolls with the tailgate plate 9 to prevent the tailgate plate 9 and the right end of the synchronous slide bar 71 from wearing after frequent contact. The two sides of the top of the synchronous slide bar 71 are fixedly connected to the extrusion rod 72, and the front and rear sides of the bottom of the inner cavity of the integrated box 2 are provided with rectangular sliding grooves 73 adapted to the extrusion rod 72.An arc-shaped slot 74 matching the extrusion rod 72 is provided on one side of the surface of the foot 69. A fixed shelf 8 is fixedly installed on the left side of the inner cavity of the integrated box 2. A tailgate plate 9 is rotatably connected to the right side of the truck beam plate 1. A rotatable cylinder 10 is installed at the right end of the front and rear sides of the inner cavity of the integrated box 2. The output end of the cylinder 10 is rotatably connected to the tailgate plate 9.

[0022] Embodiment 2: It is basically the same as Embodiment 1, and furthermore, the buckling assembly 5 includes a fixing pin 51 fixedly connected to the opposite side of the two lifting arms 62, the surface of the fixing pin 51 is rotatably connected to the limit lock buckle 52, both sides of the folding shelf 4 are welded with a limit pin 53 adapted to the limit lock buckle 52, the limit lock buckle 52 is buckled on the surface of the limit pin 53, the surface of the fixing pin 51 is sleeved with a torsion spring 54, one end of the torsion spring 54 is welded to the fixing pin 51, and the other end of the torsion spring 54 is welded to the limit lock buckle 52, the top of the limit lock buckle 52 is provided with a stop pin 55 fixedly connected to the lifting arm 62, and the bottom of the stop pin 55 surface is connected to the The limit lock buckle 52 fits tightly, and through the setting of the fastening component 5, the cooperation of the limit lock buckle 52 and the limit pin 53 plays a role of connecting and fastening between the lifting arm 62 and the folding shelf 4, so that the lifting arm 62 can maintain contact with the folding shelf 4, thereby preventing the lifting arm 62, the storage plate 64 and the connecting rod 65 from falling back, affecting the left and right movement of the folding shelf 4 in the inner cavity of the rectangular slide 61, and at the same time, under the elastic twisting action of the torsion spring 54, the limit lock buckle 52 can actively engage with the surface of the limit pin 53, and under the limiting blocking action of the stop pin 55, the limit lock buckle 52 can be prevented from excessive rotation.

[0023] A method for exchanging and fastening a sliding exchange-fastening integrated truck compartment includes the following steps: Step 1: When loading goods, the user first opens the cylinder 10 and pushes the tailgate plate 9 to open, then the user rotates the lifting arm 62 upwards, and the two lifting arms 62 drive the connecting rod 65 to move upwards during the upward rotation, so that the multiple storage plates 64 rotate in the inner cavity of the support seat 63, so that the surface of the limit lock buckle 52 contacts the surface of the limit pin 53, and the limit lock buckle 52 rotates around the fixed pin 51 as the rotation center due to the curvature of the surface of the limit lock buckle 52 and the limit pin 53, so that the torsion spring 54 is compressed, until the storage plate 64 rotates ninety degrees, and the surface of the lifting arm 62 fits the surface of the folding shelf 4. At this time, under the elastic twisting action of the torsion spring 54, the limit lock buckle 52 rotates and resets and is engaged with the surface of the limit pin 53, so that the lifting arm 62 is limited and fastened, and the folding shelf 4 is in a folded state. Then the user pushes the folding shelf 4 to the left, so that the first pulley 68 slides on the surface of the first ground rail 67; After the folding shelf 4 is moved to the leftmost side of the inner cavity of the rectangular sliding position 61, the user rotates the threaded pin 12 to release the limit of the sliding shelf 3 and pushes the sliding shelf 3 to the right so that the sliding shelf 3 reaches the rightmost side of the inner cavity of the integrated box 2. At this time, the user loads the goods into the inner cavity of the sliding shelf 3. After the loading of the sliding shelf 3 is completed, the user pushes the sliding shelf 3 to the left to reset the sliding shelf 3 and rotates the threaded pin 12 in the opposite direction to limit and tighten the sliding shelf 3. Then, the user pulls the folding shelf 4 to the right to reset the folding shelf 4 to the rightmost side of the inner cavity of the integrated box 2 and toggle the limit lock buckle 52 so that the limit lock buckle 52 is separated from the surface of the limit pin 53. At this time, the lifting arm 62 is released from the limit. Then, the lifting arm 62 is pulled to rotate and lower the storage plate 64 until the bottom of the foot 69 is completely in contact with the bottom of the inner cavity of the integrated box 2, and then the storage box 66 containing goods is placed on the top of the storage plate 64. Step 3: Finally, the tailgate plate 9 is closed by the cylinder 10. During the closing process of the tailgate plate 9, the left side of the tailgate plate 9 contacts the surface of the roller 76 and pushes the synchronous slide bar 71 to slide to the left. During the sliding process, the synchronous slide bar 71 drives the extrusion rod 72 to move, so that the extrusion rod 72 is engaged in the inner cavity of the arc-shaped slot 74, and the lifting arm 62 is limited and fastened; During the unloading process, the goods in the inner cavity of the folding shelf 4 can be unloaded first. After the goods in the inner cavity of the folding shelf 4 are unloaded, the storage plate 64 is folded and stored, and the folding shelf 4 is pushed to the leftmost side of the inner cavity of the rectangular sliding position 61, and then the sliding shelf 3 is moved to the rightmost side of the inner cavity of the integrated box 2 to unload the goods in its inner cavity.

[0024] In summary: the sliding exchange fastening integrated truck carriage stores goods through the coordinated use of the integrated box 2, the sliding shelf 3 and the folding shelf 4. At the same time, through the coordinated use of the snap-fit ​​component 5 and the folding component 6, the folding shelf 4 can be folded and slid, thereby changing the upper and lower cargo positions of the sliding shelf 3 and the folding shelf 4. At the same time, through the coordinated use of the fastening component 7, the tailgate panel 9 and the cylinder 10, the position and placement state of the folding shelf 4 can be fastened, thereby achieving the change of the upper and lower cargo positions, improving the efficiency of loading and unloading cargo, and linking the fastening shelves, thereby improving the adaptability of the carriage transportation work.

[0025] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A sliding exchange fastening type integrated freight car body, characterized in that: The truck compartment comprises an integrated box (2) fixedly mounted on the top of a truck beam plate (1): sliding shelves (3) are arranged at the left ends of the front and rear sides of the inner cavity of the integrated box (2); a slidable folding shelf (4) is arranged on the right side of the sliding shelf (3); a folding assembly (6) is arranged on the front side of the folding shelf (4); a fastening assembly (7) is arranged on the front and rear sides of the bottom of the inner cavity of the integrated box (2); the fastening assembly (7) comprises a synchronous slide rod (71) extending from the right side of the integrated box (2) to the inside of the integrated box (2); both sides of the top of the synchronous slide rod (71) are fixedly connected to an extrusion rod (72); a rectangular slide groove (73) matching the extrusion rod (72) is provided on the front and rear sides of the bottom of the inner cavity of the integrated box (2); an arc-shaped slot (74) matching the extrusion rod (72) is provided on one side of the surface of the foot (69); and a fixed shelf (8) is fixedly mounted on the left side of the inner cavity of the integrated box (2).

2. The integrated freight car body of sliding exchange fastening type according to claim 1 is characterized in that: The folding assembly (6) comprises a rectangular slide (61) provided at the front and rear sides of the bottom of the inner cavity of the integrated box (2); the folding shelves (4) are slidably connected to the inner cavity of the rectangular slide (61); two ends of opposite sides of the two folding shelves (4) are provided with lifting arms (62); the inner cavity of the folding shelves (4) is fixedly connected to a plurality of support seats (63); the inner cavity of the support seats (63) is rotatably connected to a storage plate (64); the opposite sides of the two lifting arms (62) are rotatably connected to a plurality of connecting rods (65); the storage plate (64) is away from the support seats. One end of the seat (63) is welded to the connecting rod (65); the bottom of the lifting arm (62) is fixedly connected to a foot (69); both sides of the folding shelf (4) are provided with a buckling assembly (5); the buckling assembly (5) comprises a fixing pin (51) fixedly connected to the opposite sides of the two lifting arms (62); the surface of the fixing pin (51) is rotatably connected to a limit lock (52); both sides of the folding shelf (4) are welded with a limit pin (53) adapted to the limit lock (52); the limit lock (52) is buckled on the surface of the limit pin (53).

3. The integrated freight car body of sliding exchange fastening type according to claim 2 is characterized in that: A torsion spring (54) is sleeved on the surface of the fixing pin (51), one end of the torsion spring (54) is welded to the fixing pin (51), and the other end of the torsion spring (54) is welded to the limit lock buckle (52). A stop pin (55) fixedly connected to the lifting arm (62) is provided on the top of the limit lock buckle (52), and the bottom of the stop pin (55) is tightly fitted with the limit lock buckle (52).

4. The integrated freight car body of sliding exchange fastening type according to claim 3 is characterized in that: The right side of the truck beam plate (1) is rotatably connected to a tailgate plate (9), and the right ends of the front and rear sides of the inner cavity of the integrated box (2) are equipped with rotatable cylinders (10), and the output ends of the cylinders (10) are rotatably connected to the tailgate plate (9).

5. The integrated freight car body of sliding exchange fastening type according to claim 4 is characterized in that: A plurality of storage boxes (66) are arranged in an inner cavity of the foldable shelf (4); the front and rear sides of the bottom of the inner cavity of the rectangular slide (61) are fixedly connected to a first ground rail (67); first pulleys (68) are installed at both ends of the front and rear sides of the bottom of the foldable shelf (4); the first pulleys (68) are in rolling contact with the surface of the first ground rail (67).

6. The integrated freight car body of sliding exchange fastening type according to claim 5 is characterized in that: A spring (75) is sleeved on the right side of the surface of the synchronous slide bar (71), and two ends of the spring (75) are respectively welded to the integrated box (2) and the synchronous slide bar (71), and a roller (76) is fixedly mounted on the right side of the synchronous slide bar (71).

7. The integrated freight car body of sliding exchange fastening type according to claim 6 is characterized in that: A fixing plate (11) is welded to the bottom of both sides of the sliding shelf (3), a threaded pin (12) is threadedly connected to the top of the fixing plate (11), and a threaded groove matching the threaded pin (12) is formed at the bottom of the inner cavity of the integrated box (2).

8. The integrated freight car body of sliding exchange fastening type according to claim 7 is characterized in that: Two wall-mounted guide rails (13) are fixedly mounted on the front and rear sides of the inner cavity of the integrated box (2), and the folding shelf (4) is slidably connected to the surface of the wall-mounted guide rails (13).

9. The integrated freight car body of sliding exchange fastening type according to claim 8, characterized in that: Two second ground rails (15) are laid on the front and rear sides of the bottom of the inner cavity of the integrated box (2), and second pulleys (14) are fixedly installed on the front and rear ends of the bottom of the sliding shelf (3), and the second pulleys (14) are in rolling contact with the surfaces of the second ground rails (15).

10. The integrated freight car body of sliding exchange fastening type according to claim 9, characterized in that: The steps of the replacement and fastening method are as follows: Step 1: When loading cargo, the user first opens the cylinder (10) and pushes the tailgate plate (9) to open at the same time. Then, the user rotates the lifting arm (62) upward. The two lifting arms (62) drive the connecting rod (65) to move upward during the upward rotation, thereby causing the plurality of storage plates (64) to rotate in the inner cavity of the support seat (63), so that the surface of the limit lock (52) contacts the surface of the limit pin (53). Due to the curvature of the surface of the limit lock (52) and the limit pin (53), the limit lock (52) is fixed to the fixing pin (51). ) is the rotation center, thereby compressing the torsion spring (54), until the storage plate (64) rotates ninety degrees, and the surface of the lifting arm (62) fits the surface of the folding shelf (4). At this time, under the elastic twisting action of the torsion spring (54), the limit lock buckle (52) rotates to reset and engages with the surface of the limit pin (53), limiting and fastening the lifting arm (62). At this time, the folding shelf (4) is in a folded state. Then, the user pushes the folding shelf (4) to the left, so that the first pulley (68) slides on the surface of the first ground rail (67); Step 2: After the folding shelf (4) moves to the leftmost side of the inner cavity of the rectangular slide (61), the user rotates the threaded pin (12) to release the limit of the sliding shelf (3), and pushes the sliding shelf (3) to the right so that the sliding shelf (3) reaches the rightmost side of the inner cavity of the integrated box (2). At this time, the user loads the goods into the inner cavity of the sliding shelf (3). After the loading of the sliding shelf (3) is completed, the user pushes the sliding shelf (3) to the left so that the sliding shelf (3) is reset, and rotates the threaded pin (12) in the opposite direction to push the sliding shelf (3). The user then pulls the foldable shelf (4) to the right so that the foldable shelf (4) is reset to the rightmost side of the inner cavity of the integrated box (2), and moves the limit lock (52) so that the limit lock (52) is separated from the surface of the limit pin (53). At this time, the lifting arm (62) is released from the limit, and then the lifting arm (62) is pulled to rotate and lower the storage plate (64) until the bottom of the foot (69) is completely in contact with the bottom of the inner cavity of the integrated box (2), and then the storage box (66) containing the goods is placed on top of the storage plate (64); Step 3: Finally, the tailgate plate (9) is closed by the cylinder (10). During the closing process of the tailgate plate (9), the left side of the tailgate plate (9) contacts the surface of the roller (76) and pushes the synchronous slide bar (71) to slide to the left side. During the sliding process, the synchronous slide bar (71) drives the extrusion rod (72) to move, so that the extrusion rod (72) is engaged in the inner cavity of the arc-shaped slot (74), and the lifting arm (62) is limited and fastened; During the unloading process, the goods in the inner cavity of the folding shelf (4) can be unloaded first. After the goods in the inner cavity of the folding shelf (4) are unloaded, the storage plate (64) is folded and stored, and the folding shelf (4) is pushed to the leftmost side of the inner cavity of the rectangular sliding position (61). Then, the sliding shelf (3) is moved to the rightmost side of the inner cavity of the integrated box (2) to unload the goods in its inner cavity.

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