A truck carriage

Abstract

The present invention provides a freight car compartment, which relates to the technical field of transportation equipment and solves the problem that the existing freight car compartments cannot meet the loading and unloading requirements of various different goods. This application includes a compartment cover; a compartment body located below the compartment cover, which has a cross bar and vertical piles vertically connected to the cross bar, and the cross bar is provided with a guiding groove; a flip door adapted to the compartment body, including a door body, and a guiding member arranged at the top and cooperating with the guiding groove; a rotating rod, with both ends rotatably connected to the door body and the vertical pile respectively; a telescopic member, with both ends rotatably connected to the door body and the compartment body respectively, and as the telescopic member expands and contracts, the guiding member can move along the extending direction of the guiding groove, so as to realize the flipping of the door body between the side part and the top of the compartment body. The flip door in this application is adapted to the compartment body, and through the cooperation between the guiding member on the door body and the guiding groove on the compartment body, the door body can flip relative to the compartment body as the telescopic member expands and contracts, thereby improving the convenience and efficiency of loading and unloading goods.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation equipment, and particularly relates to a freight car compartment. Background Art

[0002] In order to meet different cargo transportation requirements, there are currently various types of compartments on the market, such as high-sided compartments, fully enclosed compartments, flatbed compartments, wing-type compartments, etc. Among them, the high-sided compartment, as one of the most common compartment types, can load a variety of different goods, such as building materials, furniture, electrical appliances, mechanical equipment, livestock, etc., due to its wide range of scene adaptability, and is particularly suitable for transporting goods that need to maintain a certain ventilation during transportation or need to be loaded and unloaded frequently. The wing-type compartment, as a newly emerging type of compartment in recent years, is famous for its unique and efficient cargo loading and unloading ability; the biggest feature of the wing-type compartment lies in the doors on both sides of the compartment, which can be flipped open from the bottom of the compartment to the top like wings, so that the goods can be loaded and unloaded from both sides of the compartment, greatly saving the cargo loading and unloading time and labor costs.

[0003] However, whether it is a fixed-structure compartment represented by the high-sided compartment or a movable-structure compartment represented by the wing-type compartment, more or less, they still cannot meet the freight transportation requirements in some specific scenarios. Specifically, when transporting goods that need ventilation (such as vegetables, livestock, etc.), the wing-type compartment cannot meet this requirement, while although the high-sided compartment has good ventilation effect, the structures such as fences, side panels, and awning poles in the high-sided compartment are usually fixed to the compartment body, which to a certain extent affects the cargo loading and unloading efficiency. Although some of the structures such as fences, side panels, and awning poles in the high-sided compartment can be disassembled, the above structures still require manual operation by the user during the disassembly process, which is still not conducive to saving the cargo loading and unloading time and cost. When transporting goods that need to be loaded and unloaded frequently or have high sealing requirements, the high-sided compartment cannot meet this requirement, while the wing-type compartment can achieve automatic opening and closing of the compartment door by virtue of the setting of the wing doors. However, during the opening and closing process of the wing doors, due to their relatively large turning radius, the wing-type compartment puts extremely high requirements on the cargo loading and unloading space, that is to say, this type of wing-type compartment cannot be well applied to scenarios with narrow spaces.

[0004] It can be found that no matter which type of freight car compartment above, there are some difficulties that cannot be well solved at present when loading and unloading goods in some specific scenarios. Therefore, there is an urgent need for a new type of freight car compartment to meet various different cargo loading and unloading requirements. Summary of the Invention

[0005] In view of the above problems, the present invention provides a freight car compartment to solve the problem that the existing freight car compartments cannot meet various different cargo loading and unloading requirements.

[0006] The present invention provides a freight car carriage, including:

[0007] A carriage cover;

[0008] A carriage body located below the carriage cover, having cross bars and vertical piles vertically connected to the cross bars, and the cross bars are provided with guide grooves;

[0009] A flip door adapted to the carriage body, including:

[0010] A door body, with guide members provided at the top and adapted to the guide grooves;

[0011] A rotating rod, with both ends rotatably connected to the door body and the vertical pile respectively;

[0012] An expansion and contraction member, with both ends rotatably connected to the door body and the carriage body respectively, and as the expansion and contraction member expands and contracts, the guide member can move along the extension direction of the guide groove to realize the flipping of the door body between the side part and the top of the carriage body.

[0013] Further, the carriage body further includes side bars horizontally connected to the top of the cross bars, and a pushing member provided on the side bars, and the pushing member can abut against the edge of the door body to enable the door body to perform horizontal movement along the guide groove.

[0014] Further, the door body includes an upper frame beam and a lower frame beam located below the upper frame beam, and side frame beams respectively connected to the upper frame beam and the lower frame beam;

[0015] The guide member includes:

[0016] A sliding plate connected to the end of the upper frame beam;

[0017] A first guide wheel provided on the sliding plate, the first guide wheel can respectively contact the top wall and the bottom wall of the guide groove, and has a first axis perpendicular to the extension direction of the guide groove;

[0018] A second guide wheel provided on the sliding plate, the second guide wheel can contact the side wall of the guide groove, and has a second axis perpendicular to the first axis.

[0019] Further, a first reinforcing beam is provided at the bottom of the upper frame beam and / or the bottom of the lower frame beam, and a second reinforcing beam is provided at the bottom of the side bar.

[0020] Further, the flip door further includes a unit door rotatably connected to the door body, and a locking member is provided at the edge of the unit door;

[0021] The door body further includes a fixed beam respectively connected to the upper frame beam and the lower frame beam, and a locking member is provided on the fixed beam, and the locking member cooperates with the locking member to enable the unit door to open or close the door body.

[0022] Further, a guiding member is further provided at the top end of the cross bar;

[0023] The box cover includes:

[0024] A cover body;

[0025] A crawling mechanism arranged at the end of the cover body, including:

[0026] A crawling seat fixed to the cover body;

[0027] A transmission shaft arranged along the center line of the crawling seat;

[0028] A transmission part coaxially arranged outside the transmission shaft, and the transmission part corresponds to a guiding part;

[0029] A connecting plate, the upper part of which is rotatably connected to the transmission shaft, and the lower part has rollers correspondingly arranged in a guiding groove;

[0030] A first driving part connected to the end of the transmission shaft;

[0031] Wherein, under the drive of the first driving part, and by means of the cooperation between the rollers and the guiding groove, and the cooperation between the guiding part and the transmission part, the cover body can move along the contour of the cross bar.

[0032] Further, the cover body includes a cross beam arranged parallel to the cross bar above and a pair of side beams vertically connected to the cross beam, and folding mechanisms respectively connected to the pair of side beams, and the crawling mechanism is arranged at the end of the side beam;

[0033] Under the drive of the folding mechanism and the crawling mechanism, the pair of side beams can move towards or away from each other along the extending direction of the cross beam to realize the opening and closing of the top of the box cover.

[0034] Further, the box body also has a deformation prevention component respectively connected to the cross bar and the vertical pile, and the deformation prevention component includes:

[0035] A fixed frame having a through buffer space;

[0036] A mounting seat matching the fixed frame, having a mounting groove with an opening facing the fixed frame;

[0037] A sliding part, both ends of which can pass through the buffer space and be respectively connected to the side walls of the mounting groove, and in response to the deformation of the box body, the sliding part can slide in the buffer space.

[0038] Further, the freight car compartment also includes a cloth rolling mechanism, and the cloth rolling mechanism includes:

[0039] A tarpaulin covering the outside of the box body;

[0040] A cloth rolling rod connected to the edge of the tarpaulin;

[0041] A second driving member, which is connected to the end of the cloth winding rod. Under the drive of the second driving member, the tarpaulin can be unfolded and retracted along the circumferential direction of the cloth winding rod outside the cloth winding rod, and the cloth winding rod can move along the outer contour of the carriage body.

[0042] Furthermore, the carriage body further includes a bottom bar horizontally connected to the bottom of the cross bar;

[0043] The freight car carriage further includes a cloth tightening mechanism arranged at the bottom of the carriage body, and the cloth tightening mechanism includes:

[0044] A cloth tightening hook, which is provided with a limiting groove, and the limiting groove has an opening vertically downward;

[0045] A floating seat located below the cloth tightening hook, and the floating seat is connected to the bottom bar;

[0046] Wherein, under the drive of the second driving member, the cloth winding rod moves to the cloth tightening hook and can be rolled into the limiting groove of the cloth through the opening.

[0047] Due to the adoption of the above technical solution, the technical effects obtained by the present invention are:

[0048] The freight car carriage provided by the present invention includes a carriage cover, a carriage body and a flipping door. The flipping door is adapted to the carriage body, and through the cooperation between the guiding members on the door body and the guiding grooves on the carriage body, the door body can flip relative to the carriage body along with the telescopic movement of the telescopic member, so as to realize the opening and closing of the side part of the freight car carriage, improving the convenience and efficiency of loading and unloading goods. Specifically, the cooperation between the guiding members and the guiding grooves ensures the smoothness and accuracy of the door body during the flipping process, reduces the friction between the door body and the carriage body to a certain extent, reduces the noise, and also improves the stability and durability of the flipping door. In addition, through the arrangement of the rotating rods respectively connecting the door body and the vertical pile, it can not only realize good support for the flipping movement of the door body, but also facilitate maintaining the firm connection between the door body and the vertical pile, thereby improving the safety of the door body during the flipping process. In addition, the telescopic movement of the telescopic member not only simplifies the operation steps of the flipping door, but also ensures the smoothness and efficiency of the flipping process. At the same time, the elastic characteristics of the telescopic member can absorb the impact force during the flipping process, which is beneficial to extending the service life of the components. Moreover, the carriage body of the freight car carriage in this application can adopt a high railing structure to meet the ventilation requirements of the goods. Compared with the wing type carriage, the flipping door in this application has a smaller turning radius, which is beneficial to further improving the adaptability of the carriage to multiple scenarios.

[0049] Furthermore, a guiding member is provided at the top of the middle crossbar of the freight car compartment provided by the present invention. The compartment cover includes a cover body and a crawling mechanism provided at the end of the cover body. Specifically, through the drive of the first driving member, and by the cooperation of the roller and the guiding groove and the cooperation of the guiding member and the transmission member, the compartment cover can move along the contour of the crossbar. This design realizes the automatic opening and closing of the compartment cover, improves the convenience of using the compartment, reduces the labor intensity of manual operation, and can also ensure the sealing of the compartment during transportation to protect the goods from the external environment.

[0050] Furthermore, the cover body of the freight car compartment provided by the present invention includes a cross beam, side beams and a folding mechanism. Driven by the folding mechanism and the crawling mechanism, the side beams can move towards or away from each other along the extension direction of the cross beam to realize the opening and closing of the top of the compartment cover. This design can flexibly adjust the opening and closing degree of the compartment cover according to different cargo loading and unloading requirements, optimizes the opening and closing method of the compartment cover, improves the space utilization rate of the compartment, facilitates providing a larger operating space for cargo loading and unloading, and can also ensure the sealing of the compartment cover when closed.

[0051] Furthermore, the freight car compartment provided by the present invention further includes a cloth rolling mechanism. The setting of the cloth rolling mechanism facilitates covering and protecting the outside of the compartment body. The cooperation of the tarpaulin, the cloth rolling rod and the second driving member enables the tarpaulin to be deployed and retracted along the circumferential direction of the cloth rolling rod, and the cloth rolling rod can move along the outer contour of the compartment body. In this way, the compartment body can be conveniently covered or uncovered according to the weather conditions or the needs of the goods to protect the goods from natural factors such as sunlight and rain.

[0052] Furthermore, the freight car compartment provided by the present invention further includes a cloth tightening mechanism. The setting of the cloth tightening mechanism can better fix the tarpaulin at the bottom of the compartment body, ensure the tightness of the tarpaulin coverage, prevent the tarpaulin from being blown up or displaced during transportation, and thus improve the protection effect on the goods.

[0053] The above description is only an overview of the technical solution of the present invention. In order to be able to more clearly understand the technical means of the present invention, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specifically gives the specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The drawings are only used to illustrate the embodiments and are not considered to be a limitation of the present invention. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0055] Figure 1 is a schematic structural diagram of a freight car compartment provided by the present invention;

[0056] Figure 2 is a schematic structural diagram of another freight car compartment provided by the present invention;

[0057] Figure 3 It is a schematic structural diagram of another freight car compartment provided by the present invention;

[0058] Figure 4 It is a schematic structural diagram of a box body provided by the present invention;

[0059] Figure 5 It is a schematic structural diagram of a cross bar provided by the present invention;

[0060] Figure 6 It is a schematic structural diagram of a door body provided by the present invention;

[0061] Figure 7 It is provided by the present invention Figure 6 An enlarged schematic diagram of part A therein;

[0062] Figure 8 It is a schematic structural diagram of another door body provided by the present invention;

[0063] Figure 9 It is provided by the present invention Figure 8 An enlarged schematic diagram of part B therein;

[0064] Figure 10 It is a schematic structural diagram of a box cover provided by the present invention;

[0065] Figure 11 It is a schematic structural diagram of another box cover provided by the present invention;

[0066] Figure 12 It is provided by the present invention Figure 11 An enlarged schematic diagram of part C therein;

[0067] Figure 13 It is a schematic structural diagram of still another freight car compartment provided by the present invention;

[0068] Figure 14 It is a schematic structural diagram of a folding mechanism provided by the present invention;

[0069] Figure 15 It is a schematic structural diagram of a deformation prevention component provided by the present invention;

[0070] Figure 16 It is a schematic structural diagram of a cloth rolling mechanism provided by the present invention;

[0071] Figure 17 It is a schematic structural diagram of another cloth rolling mechanism provided by the present invention;

[0072] Figure 18 It is a schematic structural diagram of yet another freight car compartment provided by the present invention;

[0073] Figure 19 It is provided by the present invention Figure 18 An enlarged schematic view of part D in

[0074] Figure 20 It is a schematic structural view of a cloth tightening mechanism provided by the present invention;

[0075] Figure 21 It is a schematic structural view of another box cover provided by the present invention;

[0076] Figure 22 It is a schematic structural view of a crawling mechanism provided by the present invention;

[0077] Figure 23 It is a schematic structural view of a synchronizing shaft provided by the present invention;

[0078] Figure 24 It is a schematic structural view of still another box cover provided by the present invention;

[0079] Figure 25 It is a schematic structural view of another cross bar provided by the present invention;

[0080] Figure 26 It is a schematic view of the connection structure between a flip door and a box cover provided by the present invention.

[0081] In the figure:

[0082] 100 box cover, 110 cover body, 111 cross beam, 112 side beam, 113 chute, 114 synchronizing shaft, 1141 mating part, 1142 transmission wheel, 120 crawling mechanism, 121 crawling seat, 122 transmission shaft, 1221 toothed part, 1222 driving wheel, 1223 driven wheel, 123 transmission member, 124 connecting plate, 125 first driving member, 126 roller, 127 guiding roller, 130 folding mechanism, 131 first folding arm, 1311 first track groove, 132 second folding arm, 1321 second track groove, 133 first slider, 134 second slider, 135 connecting rod assembly, 136 first connecting rod, 137 second connecting rod, 138 telescopic rod, 1381 screw support rod, 1382 sleeve;

[0083] 200 box body, 210 cross bar, 2101 horizontal section, 2102 bending section, 211 guiding groove, 212 guiding member, 220 vertical post, 230 side bar, 231 second reinforcing beam, 240 pushing member, 250 anti-deformation assembly, 251 fixing frame, 252 mounting seat, 253 sliding member, 2531 roller shaft, 2532 roller body, 2533 stop portion, 260 bottom bar, 270 tensioner, 271 connecting sleeve, 272 fixing seat, 273 adjusting screw;

[0084] 300 Flip door, 310 Door body, 311 Guide, 312 Upper frame beam, 313 Lower frame beam, 314 Side frame beam, 315 Slide plate, 316 First guide wheel, 317 Second guide wheel, 318 First reinforcing beam, 319 Fixed beam, 3191 Locking member, 320 Rotating rod, 330 Telescopic member, 340 Unit door, 341 Locking member, 350 Connecting portion;

[0085] 400 Canvas rolling mechanism, 410 Canvas, 420 Canvas rolling rod, 430 Second driving member, 440 Guide rod assembly, 441 First guide rod, 442 Second guide rod;

[0086] 500 Canvas tightening mechanism, 510 Canvas tightening hook, 511 First tensioning member, 512 Second tensioning member, 520 Floating seat, 521 Seat body, 522 Tension spring, 530 Buckle lock, 531 Bent section, 532 Stopping section, 540 Third driving member. Detailed implementation manners

[0087] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein.

[0088] Refer to Figures 1 - 7 As shown, an embodiment of the present invention provides a freight car compartment, including: a compartment cover 100 and a compartment body 200 located below the compartment cover 100, and a flip door 300 adapted to the compartment body 200. Among them, the compartment body 200 has a cross bar 210 and a vertical post 220 vertically connected to the cross bar 210, and the cross bar 210 is provided with a guide groove 211; the flip door 300 includes a door body 310, a rotating rod 320 and a telescopic member 330. A guide 311 adapted to the guide groove 211 is provided at the top of the door body 310. Two ends of the rotating rod 320 are respectively rotatably connected to the door body 310 and the vertical post 220; two ends of the telescopic member 330 are respectively rotatably connected to the door body 310 and the compartment body 200, and as the telescopic member 330 expands and contracts, the guide 311 can move along the extending direction of the guide groove 211 to realize the flipping of the door body 310 between the side part and the top of the compartment body 200.

[0089] It should be noted that the truck carriage provided in this application can be configured with the body 200 in different structures so that the overall truck carriage can meet the cargo loading and unloading scenarios under different freight scenarios. For example, the body 200 can adopt structures such as a high-sided carriage or a side curtain carriage to meet the ventilation requirements of the truck carriage; or, the body 200 can adopt a closed carriage (such as a container, a winged carriage, etc.) structure to meet the sealing requirements. This application does not limit the specific structure of the body 200. It should also be noted that the truck carriage provided in this application can not only be used as a separate carriage to match the truck head, but also be used as an external hanging system of the truck carriage, which is adapted to and used together with the truck carriage. This application does not limit either of these cases.

[0090] In addition, in order to further improve the loading and unloading capacity of the truck carriage for goods in multiple scenarios, especially to enable the body 200 to load and unload large-sized goods. Preferably, the upright posts 220 in the body 200 can be telescopic upright posts so that the height of the body 200 can be adjusted, which is conducive to the loading and unloading of large-sized goods in the body 200. Among them, the telescopic upright post usually consists of a telescopic sleeve and a hydraulic mechanism for driving the telescopic sleeve. According to the different telescopic directions, it can be divided into a unidirectional telescopic upright post and a bidirectional telescopic upright post; according to the number of hydraulic mechanisms provided, it can be divided into a single-cylinder telescopic upright post and a double-cylinder telescopic upright post, etc.

[0091] It should also be noted that in this application, the cooperation between the guide member 311 on the door body 310 and the guide groove 211 in the cross bar 210 is used to realize the flipping of the flipping door 300 between the side part and the top of the body 200. Among them, in order to improve the smoothness of the flipping process of the flipping door 300 and to avoid interference that may occur during the movement of the flipping door 300 relative to the body 200 to the greatest extent. Preferably, referring to Figure 4 As shown, the cross bar 210 can include a horizontal section 2101 and curved sections 2102 connected to both ends of the horizontal section 2101, and the guide grooves 211 are respectively opened on the side walls of the cross bar 210 corresponding to the horizontal section 2101 and the curved sections 2102. With this structure of the cross bar 210, through the setting of the curved sections 2102, the movement process of the guide member 311 in the guide groove 211 is smoother, which is conducive to the efficient flipping of the flipping door 300, and thus improves the convenience and safety of loading and unloading goods.

[0092] Regarding the specific structures of the guide member 311 and the guide groove 211, this application can have various different implementation manners. For example, the guide member 311 can be a guide wheel, a guide ball, a roller, a sprocket, a slider, etc., and the guide groove 211 can be a rectangular groove, a trapezoidal groove, etc. adapted to the guide member 311. This application does not limit the specific structures of the guide member 311 and the guide groove 211.

[0093] The rotating rod 320 that is rotatably connected to both the door body 310 and the vertical post 220 can be a fixed rod or a telescopic rod. Among them, the fixed rod has higher structural strength, so that it can better support the flipping movement process of the door body 310; the telescopic rod can better adapt to the flipping trajectory of the door body 310 due to its telescopic function, and thus can adapt to the flipping doors 300 with different rotation radii. The present application does not limit the specific structure of the rotating rod 320. In addition, the telescopic member 330, as a component for driving the door body 310 to flip, can be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc. The present application also does not limit the specific structure of the telescopic member 330.

[0094] It should also be noted that there can be various different implementation manners for the number and configuration mode of the flipping doors 300 in the present application. In one implementation manner, there can be two flipping doors 300, and the two flipping doors 300 are respectively arranged on both sides of the box body 200, so as to realize the opening and closing on both sides of the box body 200; in another implementation manner, for a freight car carriage with a longer box body 200 (such as a freight car carriage with a length of 17.5 m), multiple flipping doors 300 can be arranged in parallel on one side of the freight car carriage, such as two flipping doors 300, three flipping doors 300, etc.

[0095] In addition, it can be understood that the flipping door 300 and the box cover 100 in the present application can be configured as a split structure as shown in Figures 1 - 3 ; or can be configured as an integral structure as shown in Figure 26 . When the flipping door 300 and the box cover 100 are of an integral structure, a connecting portion 350 connected to the side beam 112 of the box cover 100 can be arranged at the top of the door body 310 in the flipping door 300; among them, the connecting portion 350 can be a connecting column, a connecting block, a fixing plate, etc. The present application does not limit the specific structure of the connecting portion 350. Moreover, the door body 310 and the side beam 112 can also be connected by means of integral welding or integral forming. The present application does not limit the specific connection manner between the flipping door 300 and the box cover 100.

[0096] The truck carriage provided by the present invention has a flip door 300 adapted to the carriage body 200. Through the cooperation between the guide member 311 on the door body 310 and the guide groove 211 on the carriage body 200, the door body 310 can flip relative to the carriage body 200 as the telescopic member 330 expands and contracts, thereby realizing the opening and closing of the side of the truck carriage, improving the convenience and efficiency of loading and unloading goods. Specifically, the cooperation between the guide member 311 and the guide groove 211 ensures the smoothness and accuracy of the door body 310 during the flipping process, reduces the friction between the door body 310 and the carriage body 200 to a certain extent, reduces noise, and also improves the stability and durability of the flip door 300. In addition, through the arrangement of the rotating rod 320 that connects the door body 310 and the vertical post 220 respectively, it can not only achieve good support for the flipping movement of the door body 310, but also help maintain the firm connection between the door body 310 and the vertical post 220, thereby improving the safety of the door body 310 during the flipping process. Moreover, the telescopic movement of the telescopic member 330 not only simplifies the operation steps of the flip door 300, but also ensures the smoothness and efficiency of the flipping process. At the same time, the elastic characteristics of the telescopic member 330 can absorb the impact force during the flipping process, which is beneficial to extending the service life of the components. Furthermore, the carriage body 200 of the truck carriage in this application can adopt a high railing structure to meet the ventilation requirements of the goods. Compared with the wing-type carriage, the flip door 300 in this application has a smaller turning radius, which is beneficial to further improving the adaptability of the carriage to multiple scenarios.

[0097] In some embodiments, continuing to refer to Figure 4 as shown, the carriage body 200 further includes a side bar 230 horizontally connected to the top of the cross bar 210, and a pushing member 240 provided on the side bar 230. The pushing member 240 can abut against the edge of the door body 310 to enable the door body 310 to move horizontally along the guide groove 211. Preferably, the pushing member 240 can be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, etc. The present application does not limit the specific structure of the pushing member 240.

[0098] When the door body 310 flips from the top of the carriage body 200 to the side of the carriage body 200, if only driven by the expansion and contraction of the telescopic member 330, it is very likely that the smooth flipping of the door body 310 cannot be achieved. Therefore, in this application, the pushing member 240 is arranged on the side bar 230, and the pushing direction of the pushing member 240 is parallel to the cross bar 210, so that the pushing member 240 can smoothly transmit the pushing force to the door body 310; and, the pushing member 240 is in linkage cooperation with the guide member 311 and the telescopic member 330, thereby further optimizing the movement trajectory of the door body 310, and further improving the smoothness of the flipping process of the door body 310.

[0099] Optionally, there are multiple pusher members 240, and the multiple pusher members 240 are spaced apart and arranged on the side bar 230. The arrangement of the multiple pusher members 240 can make the pushing force be transmitted to the door body 310 more evenly, thereby facilitating the synchronous start of the flipping movement of the door body 310.

[0100] Regarding the specific structure of the guiding member 311, in addition to the structure as shown in Figure 6 , the structure of the guiding member 311 can also refer to the following embodiments:

[0101] Specifically, in this embodiment, referring to Figure 8 and Figure 9 shown, the door body 310 includes an upper frame beam 312 and a lower frame beam 313 located below the upper frame beam 312, and side frame beams 314 respectively connected to the upper frame beam 312 and the lower frame beam 313. The guiding member 311 includes a sliding plate 315, a first guide wheel 316 and a second guide wheel 317. Among them, the sliding plate 315 is connected to the end of the upper frame beam 312. The first guide wheel 316 is arranged on the sliding plate 315, and the first guide wheel 316 can respectively contact the top wall and the bottom wall of the guiding groove 211 and has a first axis perpendicular to the extending direction of the guiding groove 211. The second guide wheel 317 is also arranged on the sliding plate 315, and the second guide wheel 317 can contact the side wall of the guiding groove 211 and has a second axis perpendicular to the first axis.

[0102] Through the arrangement of the first guide wheel 316 and the second guide wheel 317, good contact between the guiding member 311 and the inner wall of the guiding groove 211 can be achieved, thereby facilitating the sliding fit between the guiding member 311 and the guiding groove 211. Among them, the number of the first guide wheel 316 and the second guide wheel 317 can both be configured to be two, and the two first guide wheels 316 and the two second guide wheels 317 are respectively located on both sides of the sliding plate 315. The arrangement of the multiple first guide wheels 316 and the multiple second guide wheels 317 is beneficial to further improving the matching effect between the guiding member 311 and the guiding groove 211.

[0103] In some embodiments, referring to Figure 4 , Figure 6 and Figure 8 shown, a first reinforcing beam 318 is provided at the bottom of the upper frame beam 312 and / or the bottom of the lower frame beam 313, and a second reinforcing beam 231 is provided at the bottom of the side bar 230.

[0104] When the size of the box body 200 is long, the door body 310 with a single frame beam structure or the box body 200 with a single side bar 230 structure may affect the overall structural strength of the door body 310 or the box body 200. One phenotype may be that the frame beam or the side bar 230 is bent. Based on this, the present application improves the structural strength of the door body 310 and the box body 200 by setting the first reinforcing beam 318 and the second reinforcing beam 231, thereby improving the safety and reliability of the truck compartment.

[0105] The specific structures of the first reinforcing beam 318 and the second reinforcing beam 231 can be implemented in many different ways. For example, the first reinforcing beam 318 and the second reinforcing beam 231 can be implemented as follows: Figure 4 , Figure 6 and Figure 8 The structure shown may also be a single beam separately arranged at the bottom of the upper frame beam 312, the lower frame beam 313 and the side bar 230, and the present application has no limitation on this.

[0106] In some embodiments, reference Figures 6 - 8 As shown, the flip door 300 also includes a unit door 340 rotatably connected to the door body 310, and a locking member 341 is arranged on the edge of the unit door 340; the door body 310 also includes a fixed beam 319 respectively connected to the upper frame beam 312 and the lower frame beam 313, and a locking member 3191 arranged on the fixed beam 319, and the locking member 3191 cooperates with the locking member 341 to enable the unit door 340 to open or close the door body 310.

[0107] By setting the unit door 340, when the flip door 300 is located at the side of the compartment 200, or when the flip door 300 does not need to be completely flipped to the top of the compartment 200, the user can also load and unload small goods into the compartment 200 by opening and closing the unit door 340, thereby further improving the convenience and efficiency of loading and unloading goods in the truck compartment. In addition, the present application also realizes the locking connection between the unit door 340 and the door body 310 by setting the locking member 3191 and the locking member 341, thereby improving the safety of the door body 310 and avoiding the unit door 340 from being opened without reason as much as possible.

[0108] Regarding the specific structure of the locking member 341 and the locking member 3191, the present application may have a variety of different implementations. For example, the locking member 341 may be a lock buckle, and the locking member 3191 may be a lock pin; or, the locking member 341 and the locking member 3191 may be magnets that can be magnetically attracted to each other, and the present application does not limit this.

[0109] In some embodiments, reference Figure 4 and Figure 5 ,as well as Figures 10 - 12As shown, a guide member 212 is also provided at the top of the crossbar 210, and the compartment cover 100 includes a cover body 110 and a crawling mechanism 120 provided at the end of the cover body 110. The crawling mechanism 120 includes a crawling seat 121, a transmission shaft 122, a transmission member 123, a connecting plate 124 and a first driving member 125. The crawling seat 121 is fixed to the cover body 110, the transmission shaft 122 is provided along the center line of the crawling seat 121, the transmission member 123 is coaxially provided on the outside of the transmission shaft 122, and the transmission member 123 corresponds to the guide member 212; the upper part of the connecting plate 124 is rotatably connected to the transmission shaft 122, and the lower part of the connecting plate 124 has a roller 126 correspondingly provided in the guide groove 211; and the first driving member 125 is connected to the end of the transmission shaft 122. Driven by the first driving member 125 , and through the cooperation between the roller 126 and the guide groove 211 , and the cooperation between the guide member 212 and the transmission member 123 , the cover body 110 can move along the contour of the cross bar 210 .

[0110] It should be noted that the crawling mechanism 120 in the present application mainly drives the cover 110 so that the car cover 100 can move along the contour of the car body 200. There can be many configuration quantities and setting methods of the crawling mechanism 120. For example, when the cover 110 includes two beams 111 respectively arranged at the front and rear ends of the car body 200, and the car body 200 includes two crossbars 210 respectively corresponding to the two beams 111, the crawling mechanism 120 can be one, and the crawling mechanism 120 can be corresponding to any one of the two beams 111; or, the crawling mechanism 120 can be two, and the two crawling mechanisms 120 can be respectively arranged corresponding to the two beams 111. The present application does not limit the configuration quantity and setting method of the crawling mechanism 120.

[0111] Reference Figure 21 and Figure 24 As shown, when there are two crawling mechanisms 120, and the two crawling mechanisms 120 are respectively arranged on the two horizontal bars 120, in order to ensure the synchronization of the movement process of the two crawling mechanisms 120. Further, the cover body 110 in the present application may also include a synchronization shaft 114 respectively connected to the two crawling mechanisms 120, and the end of the transmission shaft 122 in the crawling mechanism 120 is provided with a toothed portion 1221, and the end of the synchronization shaft 114 is provided with a matching portion 1141, and the toothed portion 1221 is meshed with the matching portion 1141 to achieve synchronous transmission between the two crawling mechanisms 120.

[0112] It should be noted that although there are various different synchronous transmission structures in the prior art, such as synchronous belt transmission, universal joint transmission, etc. However, due to the limited load capacity, short service life, relatively low transmission efficiency and accuracy of synchronous belt transmission; and for universal joint transmission, due to the characteristics of the universal joint itself, when the driving shaft rotates at a constant angular velocity, the angular velocity of the driven shaft will change periodically within a certain range, resulting in additional dynamic loads and making the transmission unstable. It can be seen that although the above-mentioned synchronous transmission structures can all achieve synchronous transmission between the two crawling mechanisms 120, there are more or less certain defects in the transmission effect. Based on this, the present application preferably adopts a synchronous gear transmission structure, which has higher transmission accuracy, better synchronism and stability, and stronger load-bearing capacity, so as to be able to well adapt to the movement process of the box cover 100 relative to the box body 200.

[0113] Regarding the specific structures of the toothed portion 1221 and the mating portion 1141, the present application can have a variety of different implementation manners:

[0114] In one implementation manner, referring to Figures 21 - 23 as shown, the toothed portion 1221 is an external tooth formed on the surface of the transmission shaft 122, and the mating portion 1141 is an internal tooth formed at the end of the synchronous shaft 114.

[0115] In this configuration, on the one hand, it can make the cooperation between the transmission shaft 122 and the synchronous shaft 114 more compact, save space, and be suitable for application scenarios with limited space; on the other hand, the meshing of the internal teeth and the external teeth can provide high-efficiency power transmission because their tooth surface contact area is relatively large and can better distribute the load. And because the tooth surface contact area of the internal teeth and the external teeth is large, the synchronous transmission structure has a strong load-bearing capacity and can withstand a large load. In addition, the cooperation of the internal teeth and the external teeth can achieve a relatively smooth transmission, reduce vibration and impact during operation, improve the smoothness of the transmission, and significantly reduce the noise generated during the transmission process, providing a more comfortable working environment.

[0116] In another implementation manner, referring to Figure 24 as shown, a driving wheel 1222 is provided at the end of one transmission shaft 122, a driven wheel 1223 is provided at the end of the other transmission shaft 122, transmission wheels 1142 are provided at both ends of the synchronous shaft 114, the toothed portion 1221 is the driving teeth and the driven teeth formed on the surfaces of the driving wheel 1222 and the driven wheel 1223, and the mating portion 1141 is the transmission teeth formed on the surface of the transmission wheel 1142.

[0117] In this configuration, by accurately calculating the tooth number ratio of each gear, the driving wheel and the driven wheel can run synchronously, ensuring the accuracy of the synchronous transmission structure. And this structure is beneficial to reducing the slip between the gears, improving the transmission efficiency and reducing the energy loss.

[0118] In addition, when the synchronous transmission structure adopts the cooperation mode of the driving wheel, the driven wheel and the transmission wheel, the configuration quantity of the synchronous shaft 114 can be flexibly adjusted to further improve the synchronous transmission effect between the two crawling mechanisms 120.

[0119] Exemplarily, the synchronous shaft 114 is configured into two, and the two synchronous shafts 114 are respectively rotationally connected between the two crawling mechanisms 120 (specifically, between the two crawling seats 121), and the transmission teeth at both ends of the two synchronous shafts 114 are respectively meshed with the driving teeth and the driven teeth.

[0120] This setting mode can further enhance the stability and reliability of the synchronous transmission structure, share the force in the transmission process, reduce the load of a single synchronous shaft 114, and improve the durability of the entire truck tarpaulin system.

[0121] It can be understood that the roller 126, as a component in direct contact with the groove wall of the guiding groove 211, can play a certain guiding role for the compartment cover 100 during the movement of the compartment cover 100 relative to the compartment body 200. On the one hand, when the groove wall of the guiding groove 211 is a plane, the roller 126 can be a cylindrical roller; or when the groove wall of the guiding groove 211 is an arc surface, the roller 126 can be an arc roller; when the groove wall of the guiding groove 211 is a wedge surface, the roller 126 can be a wedge roller; when the groove wall of the guiding groove 211 is a V-shaped surface, the roller 126 can be an inverted V-shaped roller. The present application does not limit the specific structures of the roller 126 and the guiding groove 211.

[0122] On the other hand, in order to effectively reduce the friction force between the compartment cover 100 and the compartment body 200 during the movement of the compartment cover 100, make the relative movement process of the two smoother, and reduce the noise generated during the relative movement of the two. The present application can reduce the friction force between the compartment cover 100 and the compartment body 200 by setting a lubricating layer on the surfaces of structures such as the roller 126, the groove wall of the guiding groove 211, the cross bar 210 in the compartment body 200 or the cross beam 111 in the compartment cover 100. Among them, the lubricating layer can be formed by lubricating oil, lubricating grease, etc. coated on the surfaces of the above-mentioned structures, or can be formed by materials with low friction coefficients such as polytetrafluoroethylene, silicone rubber, stone mill, and Teflon used in the above-mentioned structures themselves, or can also be formed by low-friction fabrics, films, etc. sleeved on the surfaces of the above-mentioned structures. The present application does not limit this.

[0123] In addition, the present application realizes the relative movement between the box cover 100 and the box body 200 through the cooperation between the transmission member 123 and the guiding member 212. Among them, the cooperation mode between the transmission member 123 and the guiding member 212 can be at least one of various different implementation modes such as sprocket-chain cooperation, gear-rack cooperation, lead screw-nut cooperation, pulley-belt cooperation, etc. The present application does not limit the specific cooperation mode between the transmission member 123 and the guiding member 212. Moreover, the number of the transmission member 123 and the guiding member 212 can both be one (single transmission structure), or both can be configured as two (double transmission structure); when the double transmission structure is adopted, the two transmission members 123 and the two guiding members 212 are respectively combined to form two sets of transmission mechanisms. Among them, the first set of transmission mechanism can adopt one of the above-mentioned transmission modes, and the second set of transmission mechanism can have the same transmission direction as the first set of transmission mechanism, or can have a different transmission mode from the first set of transmission mechanism. The present application also does not limit this.

[0124] When there are two guiding members 212, the setting mode of the two guiding members 212 on the cross bar 210 can refer to the following two specific examples:

[0125] Example 1

[0126] The two guiding members 212 are arranged at intervals on both sides of the top surface of the cross bar 210. The guiding groove 211 penetrates the top surface of the cross bar 210 and is formed inside the cross bar 210, and the guiding groove 211 is located between the two guiding members 212. In this example, setting the guiding member 212 on the top surface of the cross bar 210 can, to a certain extent, facilitate optimizing the layout of the various components arranged on the cross bar 210 and is conducive to miniaturizing the volume of the device.

[0127] Example 2

[0128] Support portions (not shown in the figure) extend outward from the two side walls of the cross bar 210. The two guiding members 212 are respectively arranged on the support portions. The guiding groove 211 penetrates the top surface of the cross bar 210 and is formed inside the cross bar 210, and the guiding groove 211 is located between the two guiding members 212. Among them, the support portion can be a support plate, a support tube, etc. The present application does not limit the structure of the support portion. In this example, through the setting of the support portion, the support effect on the guiding member 212 can be improved, thereby facilitating the improvement of the stability of the transmission mechanism.

[0129] In some embodiments, continuing to refer to Figure 12 as shown, the crawling mechanism 120 may further include a pair of guiding rollers 127 rotatably connected to the crawling seat 121, and the pair of guiding rollers 127 are located on both sides of the transmission member 123. Optionally, the two guiding rollers 127 can be respectively located on the left and right sides of the transmission member 123 in the horizontal direction; or, the two guiding rollers 127 can also be respectively located on the upper and lower sides of the transmission member 123 in the vertical direction.

[0130] Among them, the guiding roller 127 can not only play a certain guiding role during the movement of the box cover 100 relative to the box body 200, so that the box cover 100 can move more precisely along the contour of the cross bar 210; moreover, when the two guiding rollers 127 are arranged horizontally, the two guiding rollers 127 can contact the guiding member 212 or the top surface of the cross bar 210 during the flipping process of the box cover 100; when the two guiding rollers 127 are arranged vertically, at least one of the two guiding rollers 127 can contact the bottom surface or the top surface of the cross bar 210 during the flipping process of the box cover 100, so that the flipping process of the box cover 100 is smoother, so as to further reduce the impact that the box cover 100 may exert on the box body 200. It can be understood that the structure of the guiding roller 127 can be the same as or different from the structure of the roller 126, and the present application does not limit this.

[0131] Furthermore, a gap (not marked in the figure) is formed between a pair of guiding rollers 127, and this gap is used to limit the rotation radius of the connecting plate 124 relative to the transmission shaft 122.

[0132] Since the upper and lower parts of the connecting plate 124 are respectively connected to the transmission shaft 122 and the roller 126, the friction force generated between the roller 126 and the guiding groove 211 and the driving force generated by the transmission member 123 on the guiding member 212 are in opposite directions. During the movement of the box cover 100 along the contour of the box body 200, this connection structure is likely to cause the connecting plate 124 to deviate to a certain extent relative to the crawling seat 121. At this time, if the self-deflection of the connecting plate 124 is not restricted by the guiding roller 127, it is very likely that interference will occur between the roller 126 and the guiding groove 211, thereby hindering the normal movement of the crawling mechanism 120, and further resulting in the failure of the relative movement between the box cover 100 and the box body.

[0133] In view of this, the present application restricts the rotation radius of the connecting plate 124 relative to the transmission shaft 122 through the gap formed between a pair of guiding rollers 127, so as to ensure the stable operation of the crawling mechanism 120, and further realize the stability of the relative movement between the box cover 100 and the box body 200. Among them, regarding the specific size of the gap between the two guiding rollers 127, it can be reasonably set according to the size of the connecting plate 124, and the present application does not limit this.

[0134] In some scenarios where it is not necessary to fully open the top of the carriage, or in some scenarios with relatively limited space, implementing the full opening of the freight vehicle carriage through the above-mentioned crawling mechanism 120 may very likely be restricted by the cargo loading and unloading space and thus cannot be achieved. Based on this, in this application, a folding mechanism 130 is provided on the carriage cover 100, enabling the carriage cover 100 itself to open and close, so that in addition to the full opening method, the freight vehicle carriage also has a semi-opening method, further expanding the applicability of the carriage and enabling it to be applicable to various complex cargo loading and unloading scenarios.

[0135] Specifically, referring to Figure 13 As shown, the cover body 110 includes a cross beam 111 disposed parallel above the cross bar 210, a pair of side beams 112 perpendicularly connected to the cross beam 111, and folding mechanisms 130 respectively connected to the pair of side beams 112. The crawling mechanism 120 is disposed at the end of the side beam 112; under the drive of the folding mechanism 130 and the crawling mechanism 120, the pair of side beams 112 can move towards or away from each other along the extension direction of the cross beam 111 to achieve the opening and closing of the top of the carriage cover 100.

[0136] Among them, in this embodiment, there can be one crawling mechanism 120, which is disposed at one end of one side beam 112. At the other end of this side beam 112, there can be only a transmission member 123 (such as a sprocket) adapted to the guiding member 212 (such as a chain), and at both ends of the other side beam 112, there can also be only transmission members 123 respectively; in addition, there can be two crawling mechanisms 120, which can be respectively disposed at one ends of the pair of side beams 112 on the same side, and at the other ends of the pair of side beams 112, there can be only transmission members 123 respectively; or, there can be four crawling mechanisms 120, which can be respectively disposed at both ends of the pair of side beams 112.

[0137] It should be noted that although this application does not limit the specific structure of the carriage cover 100, in order to achieve the opening and closing of the top of the carriage cover 100 itself, in the above embodiment, by canceling the setting of the cross beam 111 or the support beam in the carriage cover 100, the two side beams 112 of the carriage cover 100 can move relatively. In addition, in another embodiment, referring to Figure 10 and Figure 11 As shown, the carriage cover 100 can include a pair of cross beams 111 and a pair of side beams 112 connected to the pair of cross beams 111. By providing sliding rails (not shown in the figure) on the pair of cross beams 111, the pair of side beams 112 are respectively matched with the sliding rails to achieve the sliding connection between the pair of cross beams 111 and the pair of side beams 112, thereby also being able to achieve the relative movement of the two side beams 112 of the carriage cover 100.

[0138] Through the special setting of the folding mechanism 130 and the above-mentioned compartment cover 100 structure, the present application can make the two side beams 112 of the compartment cover 100 move relative to each other under the drive of the folding mechanism 130 and the crawling mechanism 120, thereby realizing the top opening and closing of the compartment cover 100, and further expanding the opening method of the compartment, so that the compartment can adapt to different scenarios.

[0139] In addition, there are also many different implementation methods for the specific driving method of the two side beams 112, specifically:

[0140] In the first implementation, refer to Figure 14 As shown, the folding mechanism 130 includes a first folding arm 131 and a second folding arm 132 which are hinged to each other, and a folding driving member (not shown in the figure) which is respectively connected to the first folding arm 131 and the second folding arm 132 by transmission. A pair of side beams 112 are both provided with a slide groove 113, and the end of the first folding arm 131 and the end of the second folding arm 132 are respectively matched with the slide groove 113. Under the drive of the folding driving member, the first folding arm 131 and the second folding arm 132 respectively move along the slide groove 113 to make the two move closer or separate, and realize the pair of side beams 112 to move toward or away from each other.

[0141] In this implementation, the folding drive component can be a driving motor, a hydraulic cylinder, a pneumatic cylinder, etc., and the transmission connection method between the folding drive component and the first folding arm 131 and the second folding arm 132 can be gear transmission, chain transmission, belt transmission, etc., and this application does not limit this.

[0142] Preferably, continue to refer to Figure 14 As shown, the end of the first folding arm 131 and the end of the second folding arm 132 are respectively provided with a first slider 133 and a second slider 134. Through the cooperation between the first slider 133, the second slider 134 and the slide groove 113, a sliding connection between the first folding arm 131, the second folding arm 132 and the side beam 112 can be achieved.

[0143] In the second implementation, continue to refer to Figure 14 As shown, the folding mechanism 130 includes a first folding arm 131 and a second folding arm 132 which are hinged to each other, and a connecting rod assembly 135 which is slidably connected to the first folding arm 131 and the second folding arm 132 respectively; a pair of side beams 112 are provided with a slide groove 113, and the end of the first folding arm 131 and the end of the second folding arm 132 are respectively matched with the slide groove 113. Further, the first end of the transmission shaft 122 in the crawling mechanism 120 is connected to the first driving member 125, and the second end is connected to the connecting rod assembly 135, and under the drive of the first driving member 125 and the transmission of the connecting rod assembly 135, the first folding arm 131 and the second folding arm 132 respectively move along the slide groove 113, so that the two are close to or separated, and the pair of side beams 112 move toward or away from each other.

[0144] In this implementation manner, the first driving member 125 can be a driving motor, a hydraulic pump, a pneumatic pump, etc. And the connecting rod assembly 135 can include a first connecting rod 136 and a second connecting rod 137 that are hinged to each other, and a telescopic rod 138 connected to the hinged portion of the first connecting rod 136 and the second connecting rod 137. Wherein, the first folding arm 131 is provided with a first track groove 1311, the end of the first connecting rod 136 is slidably matched with the first track groove 1311, the second folding arm 132 is provided with a second track groove 1321, and the end of the second connecting rod 137 is slidably matched with the second track groove 1321. The telescopic rod 138 is universally connected to the second end of the transmission shaft 122 and can be telescoped as the transmission shaft 122 rotates.

[0145] It should be noted that the universal connection between the telescopic rod 138 and the transmission shaft 122 can, to a certain extent, avoid the problem of unsmooth transmission when the rotation axes of the two are inconsistent, thereby facilitating the stable exertion of the transmission effect of the connecting rod assembly 135. Exemplarily, the telescopic rod 138 and the transmission shaft 122 can be connected through a universal ball or through a universal joint. The present application does not limit the specific structure of the universal connection between the two.

[0146] Optionally, the ends of the first connecting rod 136 and the second connecting rod 137 are respectively provided with a first guide block (not shown in the figure) and a second guide block (not shown in the figure). Through the cooperation between the first guide block and the first track groove 1311, and the second guide block and the second track groove 1321, the sliding connection between the first connecting rod 136 and the first folding arm 131, and between the second connecting rod 137 and the second folding arm 132 can be realized.

[0147] Further, continue to refer to Figure 14 As shown, the telescopic rod 138 can include a spiral support rod 1381 and a sleeve 1382 that cooperates with the spiral support rod 1381. The inside of the sleeve 1382 is provided with internal threads. Through the spiral cooperation between the external threads on the spiral support rod 1381 and the internal threads in the sleeve 1382, the axial movement of the spiral support rod 1381 relative to the sleeve 1382 can be realized, that is, the telescopic movement of the telescopic rod 138 is realized.

[0148] When the folding mechanism 130 is working specifically, first, the first driving member 125 drives the transmission shaft 122 to rotate. Since the second end of the transmission shaft 122 is connected to the link assembly 135, that is, connected to the spiral support rod 1381, the spiral support rod 1381 rotates with the rotation of the transmission shaft 122, so that the sleeve 1382 can move relative to the spiral support rod 1381, thereby driving the first link 136 and the second link 137 to rotate. Secondly, the movements of the first link 136 and the second link 137 can be transmitted to the first folding arm 131 and the second folding arm 132 through the first guide block and the second guide block, so as to realize the relative rotation between the first folding arm 131 and the second folding arm 132; finally, the movements of the first folding arm 131 and the second folding arm 132 can be transmitted to the two side beams 112 through the first slider 133 and the second slider 134, thereby realizing the relative movement between the two side beams 112.

[0149] In some other embodiments, there may be two folding mechanisms 130, and the two folding mechanisms 130 are connected by a connecting shaft (not marked in the figure). Connecting two or more folding mechanisms 130 by a connecting shaft can make the relative movement of the two side beams 112 in the box cover 100 have higher synchronism. Especially when the size of the box cover 100 is relatively long, this setting method can avoid the situation that the box cover 100 cannot be folded in place due to the non-synchronous movement of the two side beams 112, thus facilitating the improvement of the folding effect of the box cover 100.

[0150] In addition, it should be noted that the folding directions of multiple different folding mechanisms 130 can be different or the same. For example, when the folding direction of the first folding mechanism 130 is forward along the extension direction of the side beam 112, the folding direction of the second folding mechanism 130 can be backward along the extension direction of the side beam 112, and the first folding mechanism 130 and the second folding mechanism 130 can also be respectively connected to two crawling mechanisms 120 provided on the two cross beams 111 of the box cover 100, and the two first driving members 125 in the two crawling mechanisms 120 are used to drive the first folding mechanism 130 and the second folding mechanism 130; or, the folding direction of the second folding mechanism 130 can also be forward along the extension direction of the side beam 112. The present application does not limit the folding directions between different folding mechanisms 130, and those skilled in the art can reasonably allocate the folding directions of different folding structures according to different product design requirements.

[0151] In some embodiments, refer to Figure 4 and Figure 15As shown, the box body 200 further has an anti-deformation component 250 respectively connected to the horizontal bar 210 and the vertical post 220, and the anti-deformation component 250 includes a fixed frame 251, a mounting seat 252 and a sliding member 253. Among them, the fixed frame 251 has a through buffer space (not marked in the figure), the mounting seat 252 matches the fixed frame 251, and the mounting seat 252 has a mounting groove (not marked in the figure) with an opening facing the fixed frame 251; both ends of the sliding member 253 can pass through the buffer space and are respectively connected to the side walls of the mounting groove, and in response to the deformation of the box body 200, the sliding member 253 can slide in the buffer space.

[0152] When there is a large amount of goods loaded in the box body 200, or when the box body 200 is impacted by an external force, the extrusion and impact generated by the goods or the external force on the vertical post 220 or the horizontal bar 210 will cause the box body 200 to deform, that is, what is commonly called box swelling. In this application, through the setting of the anti-deformation component 250, the deformation of the box body 200 caused by the extrusion and impact is eliminated to a certain extent, thereby facilitating the ensuring of the stability of the carriage.

[0153] It can be understood that the buffer space formed in the fixed frame 251 mainly limits the relative displacement between the fixed frame 251 and the mounting seat 252 through the cooperation with the sliding member 253. And the shape and structure of the buffer space can be adjusted according to different structures of the sliding member 253. For example, when the sliding member 253 is a roller, the buffer space can be an arc-shaped rolling groove; when the sliding member 253 is a slider, the buffer space can be a rectangular sliding groove matching the slider; or, the sliding member 253 can be a slider made of a material with a low friction coefficient (such as nylon, polyethylene, etc.), and the buffer space can be a slide rail adapted to the shape of the slider. In view of the fact that in specific implementation, those skilled in the art can adopt a variety of different structures to implement the sliding member 253 and the buffer space, the present application does not limit the specific structures of the buffer space and the sliding member 253.

[0154] In some embodiments, the fixed frame 251 in this application is integrally formed with the bending section 2102, and the mounting seat 252 is integrally formed with the vertical post 220. This integrally formed manner is conducive to improving the connection strength between the fixed frame 251 and the horizontal bar 210, and between the mounting seat 252 and the vertical post 220, making the relative movement process between the horizontal bar 210 and the vertical post 220 more stable.

[0155] In some other embodiments, the fixing frame 251 is provided with fixing holes (not shown in the figure), and one of the bottom surface of the bending section 2102 and the top surface of the vertical post 220 is provided with assembly holes (not shown in the figure); the mounting seat 252 is provided with mounting holes (not shown in the figure), and the other of the bottom surface of the bending section 2102 and the top surface of the vertical post 220 is provided with connection holes (not shown in the figure). In addition, the anti-deformation component 250 further includes fasteners (not shown in the figure), and the fasteners can pass through the fixing holes and cooperate with the assembly holes, and pass through the mounting holes and cooperate with the connection holes to respectively realize the detachable connection between the fixing frame 251 and the cross bar 210, and between the mounting seat 252 and the vertical post 220. Optionally, the fixing holes, the assembly holes, the mounting holes and the connection holes can all be threaded holes, and the fasteners can be screws, bolts or studs that cooperate with the threaded holes. The present application does not limit the specific structures of the above-mentioned parts.

[0156] In this embodiment, through the above structural settings, the detachable connection setting mode between the parts in the anti-deformation component 250 is realized, which is convenient for the user to maintain the anti-deformation component 250 in the later stage, and also enables the box body 200 to adapt to anti-deformation components 250 of different specifications and sizes, which is beneficial to the user experience.

[0157] In a specific example, continue to refer to Figure 15 As shown, the sliding member 253 is a sliding roller, and the sliding roller includes a roller shaft 2531 and a roller body 2532. Both ends of the roller shaft 2531 are fixedly connected to the side walls of the mounting seat 252. The roller body 2532 is sleeved outside the roller shaft 2531, and a pair of stop portions 2533 extending radially along the edge of the roller body 2532 are provided. The distance between the pair of stop portions 2533 is not less than the width of the fixing frame 251. The setting of the stop portions 2533 can limit the axial displacement of the sliding member 253, prevent the sliding member 253 and the mounting seat 252 from axially swaying relative to the fixing frame 251, and further facilitate the improvement of the stability of the anti-deformation component 250.

[0158] Preferably, there are two sliding rollers, and the two sliding rollers are respectively arranged on both sides of the center line of the vertical post 220 relatively. When multiple sliding rollers are provided, on the one hand, the relative movement between the fixing frame 251 and the mounting seat 252 can be made smoother, and on the other hand, the relative displacement distance between the fixing frame 251 and the mounting seat 252 can be limited to a certain extent, so as to avoid the center line of the cross bar 210 deviating excessively from the center line of the vertical post 220, so as to improve the stability and structural strength during the deformation process of the box body 200 as a whole.

[0159] Further, the ratio of the length of the fixing frame 251 to the width of the bending section 2102 is between 1.5 and 1. Although the present application does not specifically limit the dimensions of the various components in the anti-deformation assembly 250, in order to simultaneously take into account the structural stability and deformation limit of the compartment 200, by limiting the dimensional ratio between the fixing frame 251 and the bending section 2102 of the cross bar 210, the buffer space can meet the deformation requirements and structural stability of the compartment 200. Wherein, the width of the bending section 2102 and the length of the fixing frame 251 both refer to the distance along the length direction of the carriage.

[0160] Optionally, the number of the anti-deformation assemblies 250 is multiple, and the multiple anti-deformation assemblies 250 respectively correspond to multiple upright posts 220 in the compartment 200. The arrangement of the multiple anti-deformation assemblies 250 can, to a certain extent, increase the deformation displacement of the compartment 200.

[0161] In some other embodiments, the anti-deformation assembly 250 may further include a limiting member (not shown in the figure). Among them, the limiting member may be a limiting pin, a limiting post, a limiting baffle, a limiting block, a limiting bolt, etc. provided on the mounting seat 252. By providing the limiting member, the relative positions of the fixing frame 251 and the mounting seat 252 in the anti-deformation assembly 250 can be fixed, which is beneficial to improving the structural stability of the anti-deformation assembly 250, thereby to a certain extent avoiding the situation that the compartment 200 shakes during the driving of the truck due to the inability to relatively fix between the fixing frame 251 and the mounting seat 252.

[0162] In some embodiments, referring to Figure 16 and Figure 17 as shown, the truck compartment further includes a cloth rolling mechanism 400, and the cloth rolling mechanism 400 includes a tarpaulin 410, a cloth rolling rod 420 and a second driving member 430. The tarpaulin 410 covers the outside of the compartment 200. The cloth rolling rod 420 is connected to the edge of the tarpaulin 410. The second driving member 430 is connected to the end of the cloth rolling rod 420. And under the drive of the second driving member 430, the tarpaulin 410 can be unfolded and retracted along the circumferential direction of the cloth rolling rod 420 outside the cloth rolling rod 420, and the cloth rolling rod 420 moves along the outer contour of the compartment 200.

[0163] In some scenarios, the box cover 100 can be configured as a hard-top structure or a soft-top structure. Among them, when the box cover 100 is a hard-top structure, for example, structures such as steel plates and alloy plates can be arranged in the frame formed by the cross beam 111 and the side beam 112; when the box cover 100 is a soft-top, for example, structures such as tarpaulins, felts, thermal insulation cotton, and thermal insulation quilts can be directly arranged in the frame formed by the cross beam 111 and the side beam 112. In addition, the tarpaulin 410 itself can also be compounded into a multi-layer structure. For example, it can be a tarpaulin with heat preservation and heating functions compounded by a tarpaulin body, a heating layer, and a heat preservation layer. Among them, the heating layer can be heating wires, heating rods, etc.; the heat preservation layer can be thermal insulation cotton, thermal insulation foam, etc.; and the tarpaulin 410 in this application can be a split structure or an integral structure. When the tarpaulin 410 is a split structure, it can include a main tarpaulin for covering the top and side parts of the box body 200, a front tarpaulin for covering the front part of the box body 200, and a rear tarpaulin for covering the rear part of the box body 200; when the tarpaulin is an integral structure, it can cover the top, side, front, and rear parts of the box body 200 respectively. This application does not limit the specific structures of the box cover 100 and the tarpaulin 410.

[0164] Preferably, the cloth winding rod 420 and the edge of the tarpaulin 410 can be connected by means such as sewing and bonding. Under the driving action of the second driving member 430, the cloth winding rod 420 rotates itself to realize the winding or unfolding of the tarpaulin 410, and during the process of winding or unfolding the tarpaulin 410, the cloth winding rod 420 can move along the contours of the box cover 100 and the box body 200. Among them, the second driving member 430 can be a motor, a hydraulic pump, a pneumatic pump, a handle, a crank, etc.

[0165] Among them, there can be two cloth winding rods 420 in the cloth winding mechanism 400, and the two cloth winding rods 420 are respectively located on both sides of the box body 200, so as to be able to unfold and wind the tarpaulin 410 from both sides. Correspondingly, the number of the second driving members 430 connected to the cloth winding rods 420 can also be two.

[0166] It should be noted that since the cloth winding rod 420 in the above cloth winding mechanism 400 is usually arranged on the side of the carriage body 200, the tarpaulin 410 connected to the cloth winding rod 420 can mainly cover the top and side of the freight car carriage. In order to enable the tarpaulin 410 to also cover the rear part of the freight car carriage, in a preferred embodiment of the present application, the freight car carriage may further include an elastic cloth tightening rod (not shown in the figure) provided on the side wall of the rear cross bar 210 of the freight car carriage and the tarpaulin 410 connected to the elastic cloth tightening rod. Among them, a spring-back member (such as a coil spring, etc.) is provided in the elastic cloth tightening rod; when the user pulls down the tarpaulin 410, the elastic cloth tightening rod rotates itself and stores elastic potential energy in the spring-back member; when the user releases the tarpaulin 410, the spring-back member releases the elastic potential energy, and the elastic cloth tightening rod drives the tarpaulin 410 to move upward to realize the storage of the tarpaulin 410 at the rear part of the freight car carriage.

[0167] Correspondingly, in order to be able to cover the front part of the freight car carriage as well, the above elastic cloth tightening rod provided at the rear part of the carriage can also be provided at the front part of the carriage. In addition, in another embodiment, for the tarpaulin 410 covering the side of the carriage, the length of the side tarpaulin 410 can be appropriately extended so that at least a part of its edge is located outside the tarpaulin frame or tarpaulin cover, and a number of through holes are opened in this part of the edge. Then, tensioning members such as steel wires and straps are passed through the number of through holes. After tensioning, the exposed edge of the tarpaulin 410 in this part can cover the front part of the carriage and can also realize the tensioning and fixing of the overall tarpaulin 410.

[0168] In addition, when the tarpaulin 410 is wound up, in addition to realizing the winding of the tarpaulin 410 by the rotation of the cloth winding rod 420. In some other embodiments, the carriage cover 100 may further include a slide rail (not shown in the figure) provided at the bottom of the side beam 112; and when the tarpaulin 410 adopts a split structure, it may include a side tarpaulin for covering the side of the carriage body 200 and a top tarpaulin for covering the top of the carriage body 200. Among them, the top tarpaulin can be directly fixedly connected to the carriage cover 100, and a sliding member (not shown in the figure) can be provided at the top edge of the side tarpaulin. Through the sliding cooperation between the sliding member and the slide rail, the side tarpaulin can be pulled to the front or rear of the carriage body 200, so as to realize the opening and closing of the tarpaulin 410 and facilitate the side loading and unloading of goods. Optionally, the sliding member can be a slider, a pulley, etc.

[0169] Further, a three - headed connector (not shown in the figure) may be provided at the end of the cloth winding rod 420. Exemplarily, the three - headed connector may be connected to the cloth winding rod 420, the second driving member 430, and the handle respectively. When the second driving member 430 (such as a motor, etc.) fails or loses power, the user can drive the cloth winding rod 420 to move by operating the handle. The setting of the three - headed connector can expand the driving mode of the cloth winding rod 420, that is, it can realize the automatic driving of the cloth winding rod 420 and also the manual driving of the cloth winding rod 420, thereby enhancing the adaptability of the cloth winding rod 420 mechanism in different scenarios.

[0170] Furthermore, continuing to refer to Figure 16 and Figure 17 As shown, the cloth winding mechanism 400 may further include a guide rod assembly 440 that is rotatably connected to the crawling seat 121 and the cloth winding rod 420 respectively. Specifically, the guide rod assembly 440 includes a first guide rod 441 and a second guide rod 442 that are connected to each other. The first end of the first guide rod 441 is connected to the crawling seat 121, the second end is connected to the first end of the second guide rod 442, and the second end of the second guide rod 442 is connected to the cloth winding rod 420. Among them, the connection modes between the first guide rod 441, the second guide rod 442, the crawling seat 121, and the cloth winding rod 420 can be rotatably connected through a rotating shaft or universally connected through a universal ball. In addition, both the first guide rod 441 and the second guide rod 442 can be smooth sleeves made of stainless steel, and the first guide rod 441 and the second guide rod 442 can also be connected in a nested manner. The present application does not limit the specific connection modes between the above - mentioned various structures.

[0171] The setting of the guide rod assembly 440 can guide and limit the movement path of the cloth winding rod 420, thereby preventing the cloth winding rod 420 from deviating from the outer contours of the compartment cover 100 and the compartment body 200 during the movement process, and further facilitating the smooth progress of the process of unfolding and retracting the tarpaulin 410.

[0172] In some embodiments, referring to Figures 18 - 20 As shown, the compartment body 200 further includes a bottom bar 260 that is horizontally connected to the bottom of the cross bar 210; the freight car compartment further includes a cloth tightening mechanism 500 provided at the bottom of the compartment body 200, and the cloth tightening mechanism 500 includes a cloth tightening hook 510 and a floating seat 520 located below the cloth tightening hook 510. The cloth tightening hook 510 is provided with a limiting groove, and the limiting groove has an opening vertically downward, and the floating seat 520 is connected to the bottom bar 260. Among them, under the drive of the second driving member 430, the cloth winding rod 420 moves to the cloth tightening hook 510 and can be smoothly wound into the limiting groove through the opening.

[0173] It should be noted that the cloth - tightening hook can be an arc - shaped hook with an opening or a rectangular hook with an opening; correspondingly, the limiting groove can be an arc - shaped groove or a rectangular groove. The present application does not limit the specific structures of the cloth - rolling hook and the limiting groove. In addition, the cloth - rolling rod 420 is used to unfold and roll up the long side of the tarpaulin 410 during rotation, and the cloth - rolling rod 420 can be a rectangular rod, a square rod, a round rod, or a prism rod, etc. The present application also does not limit the specific structure of the cloth - rolling rod 420.

[0174] Regarding the specific working principle of the cloth - tightening mechanism 500, the following description can be referred to:

[0175] Exemplarily, when the cloth - rolling rod 420 rotates clockwise, the long side of the tarpaulin 410 can continuously wind around the outer side of the cloth - rolling rod 420, and the cloth - rolling rod 420 can move upward along the contour of the carriage, thereby completing the rolling - up of the long side of the tarpaulin 410. When the cloth - rolling rod 420 rotates counterclockwise, the long side of the tarpaulin 410 can continuously unwind from the outer side of the cloth - rolling rod 420, and the cloth - rolling rod 420 can move downward along the contour of the carriage, thereby completing the flattening of the long side of the tarpaulin 410. And when the cloth - rolling rod 420 moves to the position of the cloth - tightening mechanism 500, the cloth - rolling rod 420 can be guided by the cloth - rolling hook and smoothly roll into the limiting groove from the opening. At this time, the cloth - rolling rod 420 continues to rotate under the drive of the second driving member 430, such as driving the cloth - rolling rod 420 to continue rotating half a turn or one turn, so that the cloth - rolling rod 420 is tightened in the limiting groove.

[0176] Further, referring to Figure 19 and Figure 20 As shown, the cloth - tightening hook 510 can include a first tensioning member 511 and a second tensioning member 512 located outside the first tensioning member 511; the floating seat 520 includes a seat body 521 and a tension spring 522 arranged on the seat body 521. The first tensioning member 511 is connected to the seat body 521 through the tension spring 522, the second tensioning member 512 is fixedly connected to the seat body 521, and there is a floating gap between the first tensioning member 511 and the second tensioning member 512.

[0177] During the cooperation between the cloth - rolling rod 420 and the cloth - tightening hook 510, the cloth - rolling rod 420 first contacts the first tensioning member 511. The first tensioning member 511 can move upward relative to the seat body 521 in response to the extrusion of the cloth - rolling rod 420, thereby stretching the tension spring 522, and the floating gap between the first tensioning member 511 and the second tensioning member 512 decreases, so as to finally realize the tightening of the cloth - rolling rod 420 and the tarpaulin 410 by the cloth - tightening hook 510.

[0178] When the cloth winding rod 420 is separated from the cloth tightening hook 510, the cloth winding rod 420 is separated from the first tensioning member 511. The first tensioning member 511 moves downward relative to the seat body 521 under the pulling force of the tension spring 522, so that the floating gap between the first tensioning member 511 and the second tensioning member 512 increases, and the cloth tightening hook 510 returns to its initial position.

[0179] It should be noted that since the long side of the tarpaulin 410 is relatively long, the length of the cloth winding rod 420 is also very long. In fact, during the process of unfolding and winding the long side of the tarpaulin 410 by the cloth winding rod 420, the cloth winding rod 420 may not always be parallel to the length direction of the box body 200. At this time, in order to ensure that the long side of the tarpaulin 410 is tightened everywhere, preferably, a plurality of cloth tightening mechanisms 500 can be evenly arranged along the length direction of the box body 200. And, to ensure that each cloth tightening mechanism 500 can tighten the cloth winding rod 420 in an inclined state and avoid interference between the cloth tightening mechanisms 500. In this application, by setting the floating gap in the cloth tightening hook 510, a certain buffer margin is provided for the tightening process of the cloth tightening hook 510, thereby improving the tightening effect on the cloth winding rod 420 in different inclined states.

[0180] In some embodiments, referring to Figure 20 As shown, the cloth tightening mechanism 500 may further include a buckle 530 hinged to the seat body 521. The buckle 530 is located inside the first tensioning member 511, and during the process of the cloth winding rod 420 being wound into the limiting groove, the buckle 530 can be switched from the unlocked state to the locked state.

[0181] By switching the buckle 530 between the unlocked state and the locked state, the buckle 530 can block the opening of the cloth tightening hook 510, thereby avoiding the cloth winding rod 420 from slipping out of the limiting groove and improving the reliability of the cloth tightening effect of the cloth tightening hook 510.

[0182] Specifically, continuing to refer to Figure 20 As shown, the buckle 530 includes a bent section 531 and a stop section 532 connected to each other. The bent section 531 is adapted to the inner contour of the first tensioning member 511. During the switching process between the unlocked state and the locked state, the stop section 532 can contact the edge of the first tensioning member 511 to block the opening.

[0183] When the cloth winding rod 420 enters the limiting groove along the opening, the cloth winding rod 420 can first abut against the bent section 531, so that the buckle 530 rotates. At this time, the stop section 532 contacts the edge of the first tensioning member 511 as the bent section 531 rotates, and the buckle 530 is in a locked state, thus realizing the blocking of the opening; when it is necessary to unlock the buckle 530, the staff can press the stop section 532 to make the buckle 530 rotate inwardly towards the first tensioning member 511, so that the stop section 532 is separated from the first tensioning member 511, and the buckle 530 is in an unlocked state, and the cloth winding rod 420 can escape from the gap between the stop section 532 and the first tensioning member 511.

[0184] Preferably, a torsion spring (not shown in the figure) can be provided at the hinge joint between the buckle 530 and the seat body 521. The setting of the torsion spring can, on the one hand, improve the locking degree of the buckle 530 on the cloth winding rod 420 in the locked state, and on the other hand, the elastic force provided by the torsion spring is beneficial to the reset of the buckle 530 from the unlocked state to the locked state.

[0185] Further, with continued reference to Figure 20 As shown, the cloth tightening mechanism 500 can further include a third driving member 540 provided below the floating seat 520, and the third driving member 540 is connected to the first tensioning member 511 for pulling the first tensioning member 511. Among them, the third driving member 540 can be a pneumatic valve, a hydraulic valve, a driving motor, a hydraulic motor or a pull rope, etc., and the present application does not limit the specific structure of the third driving member 540.

[0186] In some embodiments, a guide pulley (not shown in the figure) is provided on the first tensioning member 511 and / or the second tensioning member 512, and the cloth winding rod 420 is wound into the limiting groove along the guiding arc surface of the guide pulley.

[0187] The guide pulley plays a guiding role in winding the cloth winding rod 420 into the limiting groove. The cloth winding rod 420 is wound into the limiting groove along the guiding arc surface of the guide pulley, making the movement of the cloth winding rod 420 smoother. On the other hand, the guide pulley can relieve the tension of the first tensioning member 511 and the second tensioning member 512 on the tarpaulin 410 and prevent the tarpaulin 410 from being torn.

[0188] In some embodiments, with reference to Figure 25As shown, the box body further has a tensioner 270 provided on the cross bar, and the tensioner 270 includes a connecting sleeve 271, a fixed seat 272, and an adjusting screw 273. Among them, the connecting sleeve 271 is respectively connected to the end of the guiding member 212, the fixed seat 272 is located below the connecting sleeve 271, and the fixed seat 272 is provided with a threaded hole (not marked in the figure); the adjusting screw 273 can pass through the threaded hole and be rotatably connected to the connecting sleeve 271, and the adjusting screw 273 is matched with the threaded hole to adjust the distance between the connecting sleeve 271 and the fixed seat 272.

[0189] It should be noted that although the guiding member 212 in the present application can be directly fixed to the surface of the cross bar 210 by means of welding, integral molding connection, etc. However, when the equipment runs for a long time, the relative force generated between the transmission member 123 and the guiding member 212 may affect the stability of the guiding member 212. In view of this, the present application adjusts the tightness of the guiding member 212 through the setting of the tensioner 270, so as to improve the stability and reliability of the movement process of the crawling mechanism 120 relative to the box body 200. And when the tensioner 270 is configured in the box body 200, the guiding member 212 and the cross bar 210 may not be connected by welding, that is, the guiding member 212 can be directly placed on the surface of the cross bar 210.

[0190] Optionally, the number of tensioners 270 can be multiple, and the multiple tensioners 270 are respectively arranged corresponding to the ends of the multiple guiding members 212. This setting method enables the user to flexibly adjust the tension of the guiding member 212, so that the two have appropriate tension, to reduce the wear of the transmission components to a certain extent and extend the service life of the transmission components.

[0191] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. Similarly, in order to streamline the present invention and help understand one or more of the various aspects of the invention, in the above description of the exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Among them, the claims following the specific implementation manner are hereby clearly incorporated into the specific implementation manner, and each claim itself is used as a separate embodiment of the present invention.

[0192] It should be noted that the above embodiments are illustrative of the present invention and not restrictive thereof, and alternative embodiments can be designed by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A freight car compartment, characterized in that: include: compartment cover; The box body located below the box cover has a horizontal bar and a pile vertically connected to the horizontal bar, and the horizontal bar is provided with a guide groove, and a guide piece is also provided at the top of the horizontal bar; The flip door adapted to the compartment comprises: The door body has a guide member on the top thereof that matches the guide groove; A rotating rod, both ends of which are rotatably connected to the door body and the pile respectively; A telescopic member, both ends of which are rotatably connected to the door body and the box body, and as the telescopic member is extended and retracted, the guide member can move along the extension direction of the guide groove to achieve the flipping of the door body between the side of the box body and the top of the box body; Wherein, the box cover comprises a cover body and a crawling mechanism arranged at the end of the cover body, the crawling mechanism comprises a crawling seat fixed to the cover body, a transmission shaft arranged along the center line of the crawling seat, a transmission member coaxially arranged on the outside of the transmission shaft and corresponding to the guide member, a connecting plate and a first driving member connected to the end of the transmission shaft, and a pair of guide rollers rotatably connected to the crawling seat, and a pair of the guide rollers are located on both sides of the transmission member in the horizontal direction, and the two guide rollers contact with the guide member during the turning process of the box cover, the upper part of the connecting plate is rotatably connected to the transmission shaft, the lower part of the connecting plate has a roller wheel correspondingly arranged in the guide groove, and the two guide rollers form a gap to limit the rotation radius of the connecting plate relative to the transmission shaft; Driven by the first driving member, and through the cooperation between the roller and the guide groove, and the cooperation between the guide member and the transmission member, the cover body can move along the contour of the cross bar; and the cover body includes a crossbeam arranged in parallel above the cross bar and a pair of side beams vertically connected to the crossbeam, and a folding mechanism respectively connected to the pair of side beams, the folding mechanism has a connecting rod assembly, the crawling mechanism is arranged at the end of the side beam, and the first end of the transmission shaft in the crawling mechanism is connected to the first driving member, and the second end is connected to the connecting rod assembly, and driven by the folding mechanism and the crawling mechanism, the pair of side beams can move toward or away from each other along the extension direction of the crossbeam to realize the opening and closing of the top of the compartment cover.

2. The freight car compartment according to claim 1, characterized in that: The compartment body also includes a side bar horizontally connected to the top of the cross bar, and a push piece arranged on the side bar, and the push piece can push against the edge of the door body so that the door body can move horizontally along the guide groove.

3. The freight car compartment according to claim 2, characterized in that: The door body includes an upper frame beam, a lower frame beam located below the upper frame beam, and side frame beams respectively connected to the upper frame beam and the lower frame beam; The guide member comprises: A slide plate connected to the end of the upper frame beam; A first guide wheel disposed on the slide, the first guide wheel being capable of contacting the top wall and the bottom wall of the guide groove respectively and having a first axis perpendicular to the extending direction of the guide groove; A second guide wheel is arranged on the slide plate, the second guide wheel can contact the side wall of the guide groove and has a second axis perpendicular to the first axis.

4. The freight car compartment according to claim 3, characterized in that: A first reinforcing beam is arranged at the bottom of the upper frame beam and / or the bottom of the lower frame beam, and a second reinforcing beam is arranged at the bottom of the side bar.

5. The freight car compartment according to claim 3, characterized in that: The flip door also includes a unit door rotatably connected to the door body, and a locking member is provided at an edge of the unit door; The door body also includes a fixed beam connected to the upper frame beam and the lower frame beam respectively, and a locking member arranged on the fixed beam, and the locking member cooperates with the locking member to enable the unit door to open or close the door body.

6. The freight car compartment according to claim 1, characterized in that: The box body also has an anti-deformation component connected to the cross bar and the pile respectively, and the anti-deformation component includes: A fixed frame having a through buffer space; A mounting seat matching the fixing frame, having a mounting groove opening toward the fixing frame; The sliding member has two ends that can pass through the buffer space and are respectively connected to the side walls of the mounting groove, and in response to the deformation of the compartment, the sliding member can slide in the buffer space.

7. The freight car body according to claim 1, characterized in that: The truck compartment further includes a cloth rolling mechanism, and the cloth rolling mechanism includes: A tarpaulin is arranged on the outside of the compartment; A cloth rolling rod connected to the edge of the tarpaulin; The second driving member is connected to the end of the cloth rolling rod, and under the drive of the second driving member, the tarpaulin can be expanded and retracted to the outside of the cloth rolling rod along the circumference of the cloth rolling rod, and the cloth rolling rod can move along the outer contour of the car body.

8. The freight car compartment according to claim 7, characterized in that: The carriage also includes a bottom bar horizontally connected to the bottom of the cross bar; The truck compartment further comprises a cloth tightening mechanism disposed at the bottom of the compartment, and the cloth tightening mechanism comprises: The cloth tightening hook is provided with a limiting groove, and the limiting groove has an opening vertically downward; A floating seat located below the cloth tightening hook, the floating seat being connected to the bottom bar; Wherein, under the drive of the second driving member, the cloth rolling rod moves to the cloth tightening hook, and can roll the cloth into the limiting groove through the opening.

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