Truck tarpaulin system and carriage

Abstract

The utility model provides a truck tarpaulin system and a carriage, the truck tarpaulin system comprises a tarpaulin frame, a tarpaulin cover matched with the tarpaulin frame and a crawling device arranged on the tarpaulin cover, and a guide piece is arranged on the tarpaulin frame; the crawling device comprises a crawling seat fixed on the tarpaulin cover; the transmission assembly comprises a fixing frame located in the crawling base. The transmission shaft is arranged along the center line of the crawling base, and the two ends of the transmission shaft can penetrate through the fixing frame to be rotationally connected with the crawling base; the transmission part sleeves the outer side of the transmission shaft and can be matched with the guide part; the guide assembly comprises a connecting rod, and one end of the connecting rod is connected with the outer wall of the fixing frame; the guide wheel is rotationally connected with the other end of the connecting rod, the rotating axis of the guide wheel is perpendicular to the rotating axis of the transmission shaft, and the guide wheel makes contact with the inner wall of the crawling base so that relative movement between the fixing frame and the crawling base can be achieved. The crawling device can more stably drive the tarpaulin cover to move along the contour of the tarpaulin frame.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of transportation machinery, and in particular to a truck tarpaulin system and a truck compartment. Background Art

[0002] During cargo transportation or storage, tarpaulins are often used to cover cargo boxes to prevent them from being blown away by the wind or to prevent dust and other pollutants from escaping into the air, potentially polluting the environment. Tarpaulins are traditionally used to cover cargo boxes, a labor-intensive and time-consuming process that often requires multiple personnel. This process is inefficient and struggles to meet the growing demand for freight. Furthermore, tarpaulins sometimes require workers to climb onto the train compartments, which not only places a heavy burden on workers but is also dangerous and increases the risk of injury.

[0003] To address this issue, automated tarpaulin systems have emerged on the market, replacing manual tarpaulin application. These systems are typically installed on the exterior of a truck compartment and comprise a connected tarpaulin cover and tarpaulin frame. The tarpaulin frame may be equipped with a chain, and the tarpaulin cover may be equipped with a sprocket that mates with the chain. A drive element is connected to the sprocket, and the sprocket and chain drive the tarpaulin cover and tarpaulin frame to achieve relative movement.

[0004] In actual use, an automatic tarpaulin device with this structure may deform the truck compartment due to external impact or the pressure of the cargo inside. When this deformation is transmitted to the automatic tarpaulin device, it often causes the tarpaulin frame or tarpaulin cover to deform as well. Specifically, when the crossbars in the tarpaulin frame or the crossbeams in the tarpaulin cover deform, the coordination between the chain and sprocket will likely interfere, causing the tarpaulin cover to become stuck relative to the tarpaulin frame, preventing the two from smoothly moving relative to each other. Furthermore, during the tarpaulin cover's flipping, the heavy weight of the tarpaulin cover itself and the weight of the tarpaulin outside the tarpaulin cover will cause the tarpaulin cover to exert a greater impact force on the tarpaulin frame. This significant impact not only creates a loud noise during the flipping process but also hinders the stability of the tarpaulin frame, tarpaulin cover, and other structures, causing significant shaking between them. This can also pose certain safety risks. Utility Model Content

[0005] In view of the above problems, embodiments of the present invention provide a truck tarpaulin system and a truck compartment to solve at least one of the above problems.

[0006] In a first aspect, an embodiment of the present invention provides a truck tarpaulin system, comprising a tarpaulin frame, a tarpaulin cover matching the tarpaulin frame, and a crawling device provided on the tarpaulin cover;

[0007] The tarpaulin frame includes a frame body and a guide member, wherein the frame body has a first rib and a second rib oppositely disposed, and a guide groove formed between the first rib and the second rib, and the guide member is formed on a surface of one of the first rib and the second rib;

[0008] The crawling device includes:

[0009] crawler seat fixed to the tarpaulin cover;

[0010] Transmission components, including

[0011] A fixed frame located in the crawler seat;

[0012] The transmission shaft is arranged along the center line of the crawling seat, and its two ends can pass through the fixed frame and be rotatably connected to the crawling seat;

[0013] The transmission member is sleeved on the outside of the transmission shaft and can cooperate with the guide member;

[0014] Guide assembly, including

[0015] A connecting rod, one end of which is connected to the outer wall of the fixed frame;

[0016] The guide wheel is rotatably connected to the other end of the connecting rod, and its rotation axis is perpendicular to the rotation axis of the transmission shaft. The guide wheel contacts the inner wall of the crawling seat to achieve relative movement between the fixed frame and the crawling seat.

[0017] In some embodiments, the transmission assembly further comprises:

[0018] The connecting plate has connecting holes and mounting holes at both ends, and the transmission shaft can pass through the connecting holes to connect to the connecting plate;

[0019] The roller is rotatably connected to the connecting plate through the mounting hole to achieve sliding fit between the roller and the guide groove.

[0020] In some embodiments, the transmission assembly further comprises:

[0021] A first limit bearing sleeved on the outside of the transmission shaft is located between the connecting plate and the fixed frame;

[0022] The second limit bearing is sleeved on the outside of the transmission shaft and is located between the connecting plate and the transmission member, and the first limit bearing and the second limit bearing are respectively abutted against the inner wall of the fixed frame, the side wall of the connecting plate and the surface of the transmission member to limit the axial displacement of the connecting plate and the transmission member relative to the transmission shaft.

[0023] In some embodiments, the transmission shaft has a cylindrical section and a prismatic section connected to each other, and the prismatic section is respectively matched with the transmission member, the first limit bearing, the second limit bearing and the connecting hole;

[0024] The cylindrical sections are located on both sides of the prismatic section and are provided with sliding sleeves.

[0025] In some embodiments, the fixed frame includes

[0026] The frame has an installation space for accommodating the connecting plate, the transmission member, the first limit bearing and the second limit bearing;

[0027] The buffer plates are arranged on both sides of the frame along the axial direction of the transmission shaft, and a buffer gap is formed between the buffer plates and the outer wall of the frame.

[0028] In some embodiments, the crawler seat comprises:

[0029] The first seat body is provided with a first assembly hole;

[0030] The second base body is arranged opposite to the first base body, and is provided with a second assembly hole. An assembly gap is formed between the first base body and the second base body, and the sliding sleeve is located in the assembly gap.

[0031] The fixing plate is provided with fixing holes corresponding to the first assembly hole and the second assembly hole;

[0032] The fastener can pass through the fixing hole, the first assembly hole and the second assembly hole to achieve the connection between the first base body, the second base body and the fixing plate.

[0033] In some embodiments, the crawling device further includes a driving member connected to the cylindrical segment.

[0034] In some embodiments, the transmission member is a sprocket, the guide member is a chain matched with the sprocket, and the driving member is a driving motor.

[0035] In some embodiments, the truck tarpaulin system further includes a tarpaulin covering the outside of the tarpaulin frame, a cloth rolling assembly connected to the edge of the tarpaulin, and a guide rod assembly respectively connected to the crawler seat and the cloth rolling assembly.

[0036] In a second aspect, an embodiment of the present invention further provides a vehicle compartment, comprising a compartment body and the above-mentioned truck tarpaulin system, wherein the truck tarpaulin system is arranged on the outside of the compartment body.

[0037] Due to the adoption of the above technical solution, the technical effects achieved by the utility model are as follows:

[0038] First, the truck tarpaulin system provided by the present invention includes a tarpaulin frame, a tarpaulin cover and a crawling device. Among them, the crawling device includes a crawling seat, a transmission assembly and a guide assembly. Specifically, the transmission assembly includes a fixed frame, a transmission shaft and a transmission member, and the guide assembly includes a connecting rod and a guide wheel. On the one hand, under the transmission of the transmission shaft, through the cooperation between the transmission member and the guide member on the tarpaulin frame, the crawling seat arranged on the tarpaulin cover can move along the guide direction of the guide member. In other words, the tarpaulin cover can move along the contour of the tarpaulin frame; on the other hand, through the contact between the guide wheel and the inner wall of the crawling seat, when the crawling seat is subjected to the axial force along the transmission shaft, relative movement occurs between the fixed frame and the crawling seat, and the transmission assembly arranged on the fixed frame can be unaffected by the axial force, so that the transmission member can always stably cooperate with the guide member, and will not be affected by the fixed force. The displacement of the fixed frame causes interference between the transmission member and the guide member, which helps the crawling device to more smoothly drive the tarpaulin cover to move along the contour of the tarpaulin frame. On the other hand, by setting the crawling seat, the transmission assembly and the guide assembly and other structures can be accommodated in the internal space of the crawling seat. When the tarpaulin cover flips over, the crawling seat can first contact the tarpaulin frame, thereby reducing the impact of the tarpaulin cover on the tarpaulin frame to a certain extent, thereby making the flipping process of the tarpaulin cover smoother, which helps to ensure the stability of the truck tarpaulin system and greatly eliminates the safety hazards and noise of the equipment. In addition, the truck tarpaulin system provided by the present application can also be well applied to the scenario of the expansion of the carriage. When the carriage expands, the support beam of the carriage is squeezed by the cargo or impacted by external forces and deformed. When the deformation is transmitted to the tarpaulin frame, the setting of the guide assembly in the crawling device can convert the deformation into a relative movement trend between the fixed frame and the crawling seat, thereby helping to maintain the stability of the relative movement process between the tarpaulin cover and the tarpaulin frame.

[0039] Secondly, an embodiment of the present invention also provides a carriage, including a carriage body and the above-mentioned truck tarpaulin system. Through the setting of the above-mentioned truck tarpaulin system, the user's loading and unloading process is greatly facilitated, which is beneficial to the user experience.

[0040] The above description is only an overview of the technical solution of the embodiment of the utility model. In order to more clearly understand the technical means of the embodiment of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the utility model more obvious and easy to understand, the specific implementation method of the utility model is specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0042] Figure 1This is a structural diagram of a truck tarpaulin system provided by an embodiment of the utility model;

[0043] Figure 2 This is a structural diagram of a tarpaulin rack provided by an embodiment of the present utility model;

[0044] Figure 3 The embodiment of the present utility model provides Figure 2 A magnified schematic diagram of part A;

[0045] Figure 4 This is a structural diagram of a crawling device provided by an embodiment of the utility model;

[0046] Figure 5 This is a structural diagram of another crawling device provided by an embodiment of the present utility model;

[0047] Figure 6 This is a structural diagram of another crawling device provided by an embodiment of the utility model;

[0048] Figure 7 This is a structural diagram of another crawling device provided by an embodiment of the present utility model;

[0049] Figure 8 This is a schematic structural diagram of a transmission shaft provided by an embodiment of the present utility model;

[0050] Figure 9 This is a structural diagram of another truck tarpaulin system provided by an embodiment of the present utility model;

[0051] Figure 10 This is a structural diagram of another truck tarpaulin system provided by an embodiment of the present utility model;

[0052] Figure 11 This is a structural diagram of another truck tarpaulin system provided by an embodiment of the present utility model;

[0053] Figure 12 This is a structural diagram of a shielding member provided by an embodiment of the present utility model;

[0054] Figure 13 This is a schematic structural diagram of another shielding member provided by an embodiment of the present utility model;

[0055] Figure 14 This is a structural diagram of another truck tarpaulin system provided by an embodiment of the present utility model;

[0056] Figure 15 This is a schematic structural diagram of a first fastening member and a second fastening member provided by an embodiment of the present utility model;

[0057] Figure 16This is a structural diagram of a tarpaulin cover provided by an embodiment of the present utility model;

[0058] Figure 17 This is a structural diagram of another tarpaulin cover provided by an embodiment of the present utility model;

[0059] Figure 18 It is a structural schematic diagram of a locking member and a locking member provided in an embodiment of the utility model.

[0060] In the picture:

[0061] 100 tarpaulin frame, 110 guide member, 120 frame body, 121 first rib, 122 second rib, 123 guide groove, 130 cross bar, 131 protrusion, 132 locking member, 140 matching portion, 150 stopping portion, 151 sealing member, 160 stake;

[0062] 200 tarpaulin cover, 210 crossbeam, 211 locking member, 212 limiting member, 220 side beam, 230 supporting net, 240 shielding member, 241 avoidance space, 242 guide curved surface, 243 fixing portion, 250 first covering portion, 251 first fastening member, 252 shielding eaves, 260 second covering portion, 261 second fastening member, 262 guide eaves;

[0063] 300 crawling device, 310 crawling seat, 320 transmission assembly, 321 fixed frame, 322 transmission shaft, 323 transmission member, 324 connecting plate, 325 roller, 326 first limit bearing, 327 second limit bearing, 328 prismatic segment, 329 cylindrical segment, 330 guide assembly, 331 connecting rod, 332 guide wheel, 340 sliding sleeve, 341 frame, 342 buffer plate, 343 installation space, 344 buffer gap, 345 first seat body, 346 second seat body, 347 fixed plate, 348 fastener, 349 driving member;

[0064] 400 tarpaulin;

[0065] 500 cloth rolling assembly, 510 cloth rolling rod, 520 drive;

[0066] 600 guide rod assembly, 610 first connecting rod, 620 second connecting rod. DETAILED DESCRIPTION

[0067] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the accompanying drawings show exemplary embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0068] Reference Figure 1-Figure 7As shown, an embodiment of the present invention provides a truck tarpaulin system, including a tarpaulin frame 100 and a tarpaulin cover 200 matching the tarpaulin frame 100, and a crawling device 300 arranged on the tarpaulin cover 200. The tarpaulin frame 100 includes a frame body 120 and a guide member 110, wherein the frame body 120 has a first rib 121 and a second rib 122 arranged opposite to each other, and a guide groove 123 formed between the first rib 121 and the second rib 122, and the guide member 110 is formed on the surface of one of the first rib 121 and the second rib 122.

[0069] The crawling device 300 includes a crawling seat 310 fixed to the tarpaulin cover 200, a transmission assembly 320 and a guide assembly 330, wherein the transmission assembly 320 includes a fixed frame 321, a transmission shaft 322 and a transmission member 323, the fixed frame 321 is located in the crawling seat 310, the transmission shaft 322 is set along the center line of the crawling seat 310, and its two ends can pass through the fixed frame 321 and rotatedly connected to the crawling seat 310, and the transmission member 323 is sleeved on the transmission shaft 322. The guide assembly 330 includes a connecting rod 331 and a guide wheel 332. One end of the connecting rod 331 is connected to the outer wall of the fixed frame 321. The guide wheel 332 is rotatably connected to the other end of the connecting rod 331. The rotation axis of the guide wheel 332 is perpendicular to the rotation axis of the transmission shaft 322. The guide wheel 332 contacts the inner wall of the crawling seat 310 to realize relative movement between the fixed frame 321 and the crawling seat 310.

[0070] It should be noted that when the truck tarpaulin system provided in the present application is applied to different types of truck compartments, such as a grid truck compartment, a flatbed truck compartment, a panel truck compartment, a curtain side truck compartment, or a dump truck compartment, the specifications, dimensions, and external profile of the tarpaulin frame 100 and the tarpaulin cover 200 should be adjusted according to the different types of truck compartments so that the truck tarpaulin system can better adapt to the truck compartment. Specifically, the fixed connection between the truck tarpaulin system and the compartment is mainly achieved by the fixed connection between the tarpaulin frame 100 and the compartment, wherein the tarpaulin frame 100 and the compartment can be fixedly connected by welding, or the two can also be detachably connected by the cooperation of a latch and a pin barrel. The present application does not limit the connection and fixing method between the tarpaulin frame 100 and the compartment.

[0071] Furthermore, for longer carriages, such as those 17.5m or 13m in length, multiple tarpaulin racks 100 can be configured to enhance the connection reliability between the truck tarpaulin system and the carriage, each connected to the carriage to improve the overall structural stability of the truck tarpaulin system. Furthermore, when multiple tarpaulin racks 100 are provided, each tarpaulin rack 100 can be equipped with a guide member 110 . Accordingly, the tarpaulin cover 200 can be equipped with multiple crawling devices 300 , which mate with the multiple guide members 100 , ensuring a smoother movement of the tarpaulin cover 200 relative to the tarpaulin racks 100 . Furthermore, the plurality of crawling devices 300 can all be driven by the driving member 349 described below, or only one of the plurality of crawling devices 300 can be driven by the driving member 349. For example, only the crawling device 300 disposed at the end of the tarpaulin cover 200 has the driving member 349, while the other crawling devices 300 are connected to each other via a synchronization shaft (not shown in the figure). In this way, the plurality of crawling devices 300 can be synchronously driven by a single driving member 349, thereby achieving better synchronization between the crawling devices 300. Preferably, the synchronization shaft can be a rigid shaft made of a material such as alloy steel or iron, or a flexible shaft made of a flexible material such as a steel wire rope or cable.

[0072] It should also be noted that the crawling device 300 can be fixed to the tarpaulin cover 200 by welding or integral molding, or can be detachably connected to the tarpaulin cover 200 by threaded connection, pin connection, snap connection, or plug-in connection. This application does not limit the connection method between the crawling device 300 and the tarpaulin cover 200. In addition, the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 is achieved through the cooperation between the guide member 110 and the transmission member 323. The cooperation between the guide member 110 and the transmission member 323 can be a chain-sprocket cooperation, a rack-gear cooperation, or a belt-pulley cooperation. This application does not limit the specific structure of the guide member 110 and the transmission member 323, nor the specific cooperation and transmission method between the two.

[0073] It is understood that the transmission member 323 is sleeved on the outside of the transmission shaft 322. To achieve relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 through the cooperation of the transmission member 323 and the guide member 110, the transmission member 323 must be able to rotate with the rotation of the transmission shaft 322. Furthermore, to achieve relative movement between the fixed frame 321 and the crawler seat 310, the transmission member 323 must also be able to slide axially along the transmission shaft 322. This allows the transmission member 323 to smoothly transmit the offset force caused by the guide member 110 to the fixed frame 321. It can be seen that in order to achieve both synchronous transmission of the transmission member 323 by the transmission shaft 322 and axial sliding of the transmission member 323 relative to the transmission shaft 322, the structure of the transmission shaft 322 should be appropriately designed. For example, the transmission shaft 322 may be configured as a prismatic shaft, or may be configured as a composite shaft having a prismatic segment 328 and a cylindrical segment 329 . The present application does not limit the specific structure of the transmission shaft 322 .

[0074] In addition, the present application does not limit the number of transmission members 323 in the crawling device 300 and guide members 110 in the tarpaulin frame 100. For example, Figure 3 and Figure 5 As shown, the number of transmission member 323 and guide member 110 can be one, and the guide member 110 can be set in the guide groove 123 inside the frame body 120, or it can be set on the side wall of the frame body 120. When the guide member 110 is set on the side wall of the frame body 120, the tarpaulin rack 100 can also include a support member (not shown in the figure), wherein the support frame is located below the guide member 110 to support and fix the guide member 110. Optionally, the support member can be a square tube, a round tube, a square column, a round column, or other structures.

[0075] Alternatively, the number of transmission members 323 and guide members 110 can both be two, with the two transmission members 323 disposed on either side of the connecting plate 324, and the two guide members 110 disposed on the tarpaulin frame 100 corresponding to the positions of the two transmission members 323. Accordingly, the frame 120 of the tarpaulin frame 100 can be formed with two guide grooves for accommodating the two guide members 110. It can be seen that when the number of transmission members 323 and guide members 110 configured in this application varies, the structures adapted to the transmission members 323 and guide members 110 will also vary. However, such adaptive changes do not exceed the primary technical concept of this application and remain within the scope of protection claimed by this application.

[0076] For ease of understanding, the working process of the crawling device 300 will be described below:

[0077] When the drive member 349, which is drivably connected to the transmission shaft 322, is in operation, the transmission shaft 322 is driven by the drive member 349 to rotate, thereby driving the transmission member 323 to rotate synchronously with the transmission shaft 322. Because the transmission member 323 cooperates with the guide member 110, the crawling device 300 as a whole can move along the extension direction of the guide member 110, thereby achieving movement of the tarpaulin cover 200 relative to the tarpaulin frame 100. During this movement, if the tarpaulin frame 100 or the tarpaulin cover 200 is subjected to external forces, such as longitudinal deformation of the truck bed, this deformation is transmitted to the tarpaulin frame 100, causing the vertical and horizontal beams of the tarpaulin frame 100 to deviate horizontally. If the horizontal beam to which the guide member 110 is fixed deviates horizontally, the guide member 110 can transmit this horizontal deviation to the transmission member 323, which in turn transmits this horizontal deviation to the fixed frame 321. At the same time, the connecting rod 331 connected to the fixed frame 321 can drive the guide wheel 332 to move along the inner wall of the crawling seat 310 under the drive of the fixed frame 321, thereby realizing the relative movement between the fixed frame 321 and the crawling seat 310, and making the crawling device 300 as a whole still able to work stably when affected by axial force, thereby ensuring the smooth progress of the relative movement process between the tarpaulin cover 200 and the tarpaulin frame 100.

[0078] The truck tarpaulin system provided by the present application, on the one hand, under the transmission of the transmission shaft 322, through the cooperation of the transmission member 323 and the guide member 110 on the tarpaulin frame 100, the crawling seat 310 provided on the tarpaulin cover 200 can move along the guide direction of the guide member 110, in other words, the tarpaulin cover 200 can move along the contour of the tarpaulin frame 100; on the other hand, through the contact between the guide wheel 332 and the inner wall of the crawling seat 310, when the crawling seat 310 is subjected to the axial force along the transmission shaft 322, relative movement occurs between the fixed frame 321 and the crawling seat 310, and the transmission assembly 320 provided on the fixed frame 321 can be free from the influence of the axial force, so that the transmission member 323 can always be stably connected with the guide member 110 They cooperate with each other, so that there will be no interference between the transmission member 323 and the guide member 110 due to the displacement of the fixing frame 321, which is conducive to the crawling device 300 to drive the tarpaulin cover 200 to move along the contour of the tarpaulin frame 100 more smoothly; on the other hand, through the arrangement of the crawling seat 310, the transmission assembly 320 and the guide assembly 330 and other structures can be accommodated in the internal space of the crawling seat 310. When the tarpaulin cover 200 is flipped over, the crawling seat 310 can first contact the tarpaulin frame 100, thereby reducing the impact of the tarpaulin cover 200 on the tarpaulin frame 100 to a certain extent, thereby making the flipping process of the tarpaulin cover 200 smoother, which is conducive to ensuring the stability of the truck tarpaulin system and greatly eliminating the safety hazards and noise of the equipment. In addition, the truck tarpaulin system provided in the present application can also be well applied to the scenario of the expansion of the carriage. When the carriage expands, the support beam of the carriage is deformed by the squeezing of the cargo or the impact of external force. When the deformation is transmitted to the tarpaulin frame 100, the setting of the guide assembly 330 in the crawling device 300 can convert the deformation into a relative movement trend between the fixed frame 321 and the crawling seat 310, thereby helping to maintain the stability of the relative movement process between the tarpaulin cover 200 and the tarpaulin frame 100.

[0079] Further, refer to Figure 4-Figure 7 As shown, the transmission assembly 320 also includes a connecting plate 324 and a roller 325, wherein a connecting hole (not marked in the figure) and a mounting hole (not marked in the figure) are respectively provided at both ends of the connecting plate 324, and the transmission shaft 322 can pass through the connecting hole to be connected to the connecting plate 324; the roller 325 is rotatably connected to the connecting plate 324 through the mounting hole to achieve a sliding fit between the roller 325 and the guide groove 123.

[0080] To ensure that the tarpaulin cover 200 can move along the contour of the tarpaulin frame 100 while maintaining a stable connection between the tarpaulin cover 200 and the tarpaulin frame 100 and preventing the tarpaulin cover 200 from separating from the tarpaulin frame 100, the present application provides a guide groove 123 on the tarpaulin frame 100 and a roller 325 adapted to the guide groove 123 in the crawling device 300. This allows the roller 325 to engage with the guide groove 123 and, limited by the inner wall of the guide groove 123, prevent the roller 325 from separating from the guide groove 123. Furthermore, the sliding connection between the crawling device 300 and the tarpaulin frame 100 is achieved through the connection between the connecting plate 324, the roller 325, and the transmission shaft 322. This arrangement further improves the stability of the tarpaulin cover 200 during movement compared to the tarpaulin frame 100 and prevents the tarpaulin cover 200 from separating due to the cooperation of the transmission member 323 and the guide member 110.

[0081] It can be understood that in addition to achieving the sliding connection between the crawling device 300 and the tarpaulin frame 100 through the cooperation between the above-mentioned roller 325 and the guide groove 123, those skilled in the art can also adopt the method of cooperating with the slider and the slide groove, or the method of cooperating with the T-plate and the T-slot. The present application does not limit the specific structure of the sliding connection between the crawling device and the tarpaulin frame 100.

[0082] In some embodiments, reference Figure 7 As shown, the transmission assembly 320 also includes a first limit bearing 326 and a second limit bearing 327 respectively arranged on the outside of the transmission shaft 322, the first limit bearing 326 is located between the connecting plate 324 and the fixed frame 321, and the second limit bearing 327 is located between the connecting plate 324 and the transmission member 323, and the first limit bearing 326 and the second limit bearing 327 are respectively abutted against the inner wall of the fixed frame 321, the side wall of the connecting plate 324 and the surface of the transmission member 323 to limit the axial displacement of the connecting plate 324 and the transmission member 323 relative to the transmission shaft 322.

[0083] The first limiting bearing 326 and the second limiting bearing 327, on the one hand, form a position limit for the transmission member 323 and the connecting plate 324 by abutting against the fixed frame 321, the connecting plate 324 and the side wall of the transmission member 323, so as to not only enable the transmission assembly 320 to move as a whole along the axial direction of the transmission shaft 322 under the action of an external force, but also limit the fitting clearance between the transmission member 323 and the guide member 110, so that the transmission member 323 can fit more accurately with the guide member 110, thereby ensuring the stability and reliability of the structure of the transmission assembly 320; on the other hand, the surfaces of the first limiting bearing 326 and the second limiting bearing 327 can also contact the surface of the tarpaulin frame 100, thereby improving the smoothness of the movement of the crawling device 300 along the contour of the tarpaulin frame 100 to a certain extent, so that the crawling device 300 can move more smoothly along the contour of the tarpaulin frame 100, and can reduce the interference and friction between the crawling device 300 and the tarpaulin frame 100. Optionally, both the first limit bearing 326 and the second limit bearing 327 may be ball bearings, and the present application does not limit the specific types of the first limit bearing 326 and the second limit bearing 327 .

[0084] In other embodiments, the first and second limit bearings 326, 327 can be coaxially arranged with the transmission shaft 322 or directly mounted on either side of the fixed frame 321. Compared to coaxially arranged with the transmission shaft 322, this arrangement primarily serves to guide the crawling device 300 and the tarpaulin frame 100. Furthermore, to enhance this guidance, sleeves can be positioned outside the first and second limit bearings 326, 327.

[0085] In a specific example, referring to Figure 8 As shown, the transmission shaft 322 has a cylindrical section 329 and a prismatic section 328 connected to each other. The prismatic section 328 cooperates with the transmission member 323, the first limit bearing 326, the second limit bearing 327 and the connecting hole respectively. The cylindrical section 329 is located on both sides of the prismatic section 328 and is provided with a sliding sleeve 340.

[0086] It is particularly important to note that when the prismatic section 328 of the transmission shaft 322 cooperates with the transmission member 323, the first limit bearing 326 and the second limit bearing 327, in order to enable the transmission member 323, the first limit bearing 326 and the second limit bearing 327 to rotate with the rotation of the transmission shaft 322, all three can be provided with a prism hole that is compatible with the prism section 328; however, if the connecting hole that cooperates with the prism section 328 also adopts a prism hole structure, the connecting plate 324 will also rotate synchronously with the transmission shaft 322. Due to the structure and location of the connecting plate 324, the connecting plate 324 will interfere with the fixed frame 321 as it rotates with the drive shaft 322. Furthermore, as a component connecting the drive shaft 322 and the roller 325, if the connecting plate 324 rotates with the drive shaft 322, it will cause the roller 325 to press against the inner wall of the guide groove 123 with greater pressure, hindering the movement of the roller 325 within the guide groove 123 and causing the crawler device 300 to become stuck and unable to continue to move along the contour of the tarpaulin frame 100. Therefore, to avoid this situation, the connecting hole in the present application can be configured as a cylindrical hole to prevent the connecting plate 324 from rotating with the drive shaft 322; alternatively, the outer diameter of the prismatic segment 328 can be set to be smaller than the inner diameter of the connecting hole, so that there is a gap between the prismatic segment 328 and the connecting hole.

[0087] Furthermore, configuring both ends of the transmission shaft 322 as cylindrical sections 329 facilitates a reliable connection between the transmission shaft 322 and an external drive component (such as a motor, etc.). Furthermore, the sleeves 340 provided on the cylindrical sections 329 improve the rotation of the transmission shaft 322, making the rotation process of the transmission shaft 322 smoother.

[0088] In another specific example, the transmission shaft 322 is a cylindrical shaft with a circular cross-section, and the transmission shaft 322 is provided with a first keyway (not shown in the figure), and the connecting plate 324, the first limit bearing 326 and the second limit bearing 327 are all provided with a second keyway (not shown in the figure); the transmission assembly 320 can also include a limit key (not shown in the figure), which is respectively matched with the first keyway and the second keyway to realize the connection between the transmission shaft 322 and the connecting plate 324, the first limit bearing 326 and the second limit bearing 327, thereby realizing the synchronous transmission of the transmission shaft 322 to the connecting plate 324, the first limit bearing 326 and the second limit bearing 327.

[0089] In some embodiments, reference Figure 6As shown, the fixed frame 321 includes a frame body 341 and a buffer plate 342. The frame body 341 has an installation space 343 for accommodating the connecting plate 324, the transmission member 323, the first limit bearing 326, and the second limit bearing 327. The buffer plates 342 are arranged on both sides of the frame body 341 along the axial direction of the transmission shaft 322, and a buffer gap 344 is formed between the buffer plates 342 and the outer wall of the frame body 341.

[0090] The fixed frame 321 serves as a supporting and fixing component in the transmission assembly 320. The specific shape and size of the installation space 343 formed by its frame body 341 can be adaptively adjusted based on the size and shape of the connecting plate 324, transmission member 323, first limit bearing 326, and second limit bearing 327 housed therein, and this application does not impose any restrictions on this. In addition, the buffer plates 342 disposed on both sides of the frame body 341 can provide a certain degree of cushioning for the fixed frame 321 during its axial movement along the transmission shaft 322 by providing a buffer gap 344, thereby minimizing the impact of the fixed frame 321 on components such as the crawling seat 310 or the sliding sleeve 340, thereby ensuring the structural stability and safety of the crawling device 300. Regarding the specific size of the buffer gap 344, those skilled in the art can make a reasonable selection based on the relevant design requirements of the product, and this application does not impose any restrictions on this.

[0091] In other embodiments, notches (not marked in the figure) are provided at the bottom of the frame 341 and the bottom of the buffer plate 342. The provision of the notches makes it easier to separate the frame 341 and the buffer plate 342 from other components of the transmission assembly 320, such as the transmission shaft 322, the transmission member 323, and the connecting plate 324, making the transmission assembly 320 easier to disassemble and facilitating the user's subsequent maintenance of the crawling device 300.

[0092] In some embodiments, reference Figure 4-Figure 6 As shown, the crawling seat 310 includes a first seat body 345 and a second seat body 346 arranged opposite to the first seat body 345, as well as a fixing plate 347 and a fastener 348; wherein, the first seat body 345 is provided with a first assembly hole, the second seat body 346 is provided with a second assembly hole, and an assembly gap is formed between the first seat body 345 and the second seat body 346, and the sliding sleeve 340 is located in the assembly gap; in addition, the fixing plate 347 is provided with a fixing hole corresponding to the first assembly hole and the second assembly hole, and the fastener 348 can pass through the fixing hole, the first assembly hole and the second assembly hole to realize the connection between the first seat body 345, the second seat body 346 and the fixing plate 347.

[0093] In this embodiment, the crawler seat 310 is configured as a split structure comprising a first seat body 345 and a second seat body 346. This not only facilitates the assembly of components such as the transmission assembly 320, the guide assembly 330, and the crawler seat 310 in the crawler device 300, but also facilitates user maintenance of the crawler device 300. Furthermore, the assembly gap formed by the split crawler seat 310 can be adapted to the sleeve 340, thereby enabling the crawler seat 310 to be positioned and fixed relative to the transmission assembly 320. Furthermore, the fastener 348 can be a threaded fastener 348 such as a screw or bolt, or a plug-in fastener 348 such as a pin or rivet. Accordingly, the fixing hole, the first assembly hole, and the second assembly hole can be threaded holes or plain holes. The specific structures of the fastener 348, the fixing hole, the first assembly hole, and the second assembly hole are not limited in this application.

[0094] It is understood that, in addition to the aforementioned split structure, the crawling seat 310 may also be an integrated structure. The integrated structure of the crawling seat 310 provides greater stability and structural strength, thereby, to a certain extent, improving the reliability of the crawling device 300. Those skilled in the art may, in specific implementations, reasonably configure the overall structure of the crawling seat 310 based on relevant product design requirements and taking into account the production cost of the product.

[0095] In some embodiments, reference Figure 4-Figure 7 As shown, the crawling device 300 also includes a drive member 349 connected to the cylindrical section 329. Furthermore, the transmission member 323 is a sprocket, the guide member 110 is a chain that cooperates with the sprocket, and the drive member 349 is a drive motor. In addition to the drive motor, the drive member 349 can also be a hydraulic pump, a pneumatic pump, etc. This application does not limit the type of the drive member 349.

[0096] In some embodiments, reference Figure 9 As shown, the truck tarpaulin system further includes a tarpaulin 400 positioned outside the tarpaulin frame 100, a roll-up assembly 500 connected to the edge of the tarpaulin 400, and a guide rod assembly 600 connected to the crawler seat 310 and the roll-up assembly 500. Specifically, the roll-up assembly 500 includes a roll-up rod 510 and a driver 520 connected to the roll-up rod 510. The roll-up rod 510 and the edge of the tarpaulin 400 can be connected by sewing, bonding, or other methods. Driven by the driver 520, the roll-up rod 510 rotates, thereby driving the tarpaulin 400 to be rolled up or rolled out. During the process of rolling up or rolling out the tarpaulin 400, the roll-up rod 510 can move along the contours of the tarpaulin frame 100 and the tarpaulin cover 200. The driver 520 may be a motor, a hydraulic pump, a pneumatic pump, a handle, a crank, etc. The arrangement of the cloth rolling assembly 500 can realize efficient and rapid deployment and retraction of the tarpaulin 400, saving manpower and material resources and being highly safe.

[0097] Furthermore, the surface shape of the cloth rolling rod 510 can be square, rectangular, or circular, and the present application does not limit the specific structure of the cloth rolling rod 510. Preferably, a heating element (such as a heating wire, a heating rod, a heating block, etc.) can be provided inside the cloth rolling rod 510. The provision of the heating element enables the cloth rolling rod 510 to transfer heat to the tarpaulin during the process of rolling up the tarpaulin, thereby thawing ice formed on the surface of the tarpaulin in cold weather, thereby ensuring stable operation of the equipment and extending the service life of the tarpaulin itself.

[0098] Furthermore, the roll-up rod 510 may be internally provided with a magnetic element, and the tarpaulin cover 200 and / or the tarpaulin frame 100 may also be provided with a magnetic element, or portions of the tarpaulin cover 200 and / or the tarpaulin frame 100 may be made of a magnetic material. Through the coordination between the magnetic element and the magnetic element, or between the magnetic element and the magnetic material, the roll-up rod 510 can maintain stability during its movement as it moves along the outer contour of the tarpaulin cover 200 and / or the tarpaulin frame 100. This allows the roll-up rod 510 to be attached to the surface of the tarpaulin cover 200 and / or the tarpaulin frame 100 to a certain extent, meeting user requirements for varying degrees of tarpaulin opening and closing, and enabling the device to adapt to a variety of scenarios.

[0099] It should also be noted that the tarpaulin covering the outside of the tarpaulin cover 200 and / or the tarpaulin frame 100 in this application can be a split structure or a single-piece structure. When the tarpaulin is a split structure, it can include a main tarpaulin for covering the top and sides of the tarpaulin frame 100, a front tarpaulin for covering the front of the tarpaulin frame 100, and a rear tarpaulin for covering the rear of the tarpaulin frame 100. When the tarpaulin is a single-piece structure, it can cover the top, sides, front, and rear of the tarpaulin frame 100 separately. This application does not limit the specific structure of the tarpaulin 400.

[0100] Furthermore, the end of the cloth rolling rod 510 may be provided with a three-head connector (not shown). For example, the three-head connector can be connected to the cloth rolling rod 510, the motor, and the handle respectively. When the motor fails or lacks power, the user can drive the cloth rolling rod 510 by operating the handle. The provision of the three-head connector can expand the driving mode of the cloth rolling rod 510, that is, it can realize automatic driving of the cloth rolling rod 510, and it can also realize manual driving of the cloth rolling rod 510, thereby improving the adaptability of the cloth rolling assembly 500 in different scenarios.

[0101] Preferably, there are two cloth rolling rods 510 in the cloth rolling assembly 500, and the two cloth rolling rods 510 are respectively connected to the edges of both sides of the tarpaulin 400. Correspondingly, there can also be two drivers 520 connected to the cloth rolling rods 510 to respectively drive the two cloth rolling rods 510 to rotate.

[0102] Further, continue to refer to Figure 9 As shown, the guide rod assembly 600 includes a first connecting rod 610 and a second connecting rod 620 connected to each other. The first end of the first connecting rod 610 is connected to the crawling seat 310, and the second end is connected to the first end of the second connecting rod 620. The second end of the second connecting rod 620 is connected to the cloth rolling assembly 500. The connection between the first connecting rod 610, the second connecting rod 620, the crawling seat 310 and the cloth rolling assembly 500 can be a rotational connection via a rotating shaft or a universal connection via a universal ball joint. In addition, the first connecting rod 610 and the second connecting rod 620 can both be smooth sleeves made of stainless steel, and the first connecting rod 610 and the second connecting rod 620 can also be connected in a nested manner. The present application does not limit the specific connection method between the above structures.

[0103] The setting of the guide rod assembly 600 can guide and limit the movement path of the cloth rolling assembly 500, preventing the cloth rolling assembly 500 from deviating from the outer contours of the tarpaulin cover 200 and the tarpaulin frame 100 during movement, thereby ensuring the smooth unfolding and retraction process of the tarpaulin 400.

[0104] It is understood that when rolling up the tarpaulin 400, in addition to rotating the rolling rod 510 to achieve the retraction of the tarpaulin, in other embodiments, the tarpaulin frame 100 may include a horizontal bar 130, side bars (not shown) connected to the horizontal bar 130, and slide rails (not shown) disposed at the bottom of the side bars. Furthermore, when the tarpaulin 400 adopts a split structure, it may include side tarpaulins for covering the sides of the tarpaulin frame 100 and a top tarpaulin for covering the top of the tarpaulin frame 100. The top tarpaulin may be directly fixedly connected to the tarpaulin cover 200, and the top edge of the side tarpaulin may be provided with a sliding member (not shown). Through the sliding cooperation between the sliding member and the slide rail, the side tarpaulin can be moved to the front or rear of the tarpaulin frame 100, thereby achieving the opening and closing of the vehicle compartment and facilitating the loading and unloading of goods from the side. Optionally, the sliding member may be a slider, a pulley, etc.

[0105] Furthermore, refer to Figure 10 As shown, the tarpaulin cover 200 may include a crossbeam 210 and side beams 220 connected to the crossbeam 210, and a support net 230; wherein the crossbeam 210 and the side beams 220 can be enclosed to form a frame, and the support net 230 is arranged in the frame. The support net 230 can not only be used to support the tarpaulin 400, but also can improve the ventilation effect of the car to a certain extent.

[0106] In some scenarios, the tarpaulin cover 200 can also be configured as a hardtop structure or a softtop structure. When the tarpaulin cover 200 is a hardtop structure, for example, a steel plate, alloy plate, or other structure can be placed within the frame formed by the crossbeam 210 and the side beams 220. When the tarpaulin cover 200 is a softtop structure, for example, a tarpaulin, felt, insulation cotton, or an insulation blanket can be placed directly within the frame formed by the crossbeam 210 and the side beams 220. Furthermore, the tarpaulin itself can be composited into a multi-layer structure, for example, a tarpaulin with insulation and heating functions composed of a tarpaulin body, a heating layer, and an insulation layer. The heating layer can be a heating wire, a heating rod, or the like; the insulation layer can be insulation cotton, insulation foam, or the like. This application does not limit the specific structures of the tarpaulin cover 200 and the tarpaulin 400.

[0107] It should be noted that since the cloth rolling rod 510 in the above-mentioned cloth rolling assembly 500 is usually set on the side of the tarpaulin frame 100, the tarpaulin 400 connected to the cloth rolling rod 510 can mainly cover the top and sides of the truck compartment. In order to enable the tarpaulin 400 to also cover the rear of the truck compartment, in a preferred embodiment of the present application, the truck tarpaulin system can also include an elastic cloth tightening rod (not shown in the figure) arranged on the side wall of the horizontal bar 130 at the rear of the truck compartment and the tarpaulin 400 connected to the elastic cloth tightening rod, wherein the elastic cloth tightening rod is provided with a rebound member (such as a coil spring); when the user pulls the tarpaulin 400 downward, the elastic cloth tightening rod rotates itself and causes the rebound member to store elastic potential energy; when the user releases the tarpaulin 400, the rebound member releases the elastic potential energy, and the elastic cloth tightening rod drives the tarpaulin 400 to move upward, thereby achieving the storage of the tarpaulin 400 at the rear of the truck compartment.

[0108] Accordingly, to cover the front of the truck compartment, the elastic tensioning rods located at the rear of the compartment can also be located at the front of the compartment. Furthermore, in another embodiment, the tarpaulin 400 covering the side of the compartment can be appropriately extended so that at least a portion of its edge is located outside the tarpaulin frame or tarpaulin cover. A plurality of through-holes are then provided in this portion of the edge. Tensioning members, such as steel wire ropes or straps, are then passed through these through-holes. After tensioning, the exposed edge of the tarpaulin 400 can both cover the front of the compartment and tighten and secure the entire tarpaulin 400.

[0109] In some embodiments, reference Figure 11 and Figure 12As shown, in order to block the gap between the tarpaulin cover 200 and the tarpaulin frame 100 and prevent external pollutants or rainwater from entering the vehicle compartment through the gap, the present application can rotatably set a shielding member 240 at the edge area of ​​the side beam 220 of the tarpaulin cover 200, and the shielding member 240 can be flipped relative to the tarpaulin cover 200 and rested on the tarpaulin frame 100 to block the gap between the tarpaulin cover 200 and the tarpaulin frame 100.

[0110] At least a portion of the shielding member 240 is bent away from the tarpaulin frame 100 to form an escape space 241 on the side of the shielding member 240 facing the tarpaulin frame 100 and a guide curved surface 242 on the side away from the tarpaulin frame 100 .

[0111] The shielding member 240 is curved to form a clearance space 241 and a curved guide surface 242 on either side. The clearance space 241, facing the tarpaulin frame 100, allows the tarpaulin frame 100 to be avoided, preventing interference between the shielding member 240 and the tarpaulin frame 100 during rotation, which could affect the shielding effect of the shielding member 240. The curved guide surface 242, facing away from the tarpaulin frame 100, guides external fluid, allowing wind or rainwater to flow downward along the curved guide surface to the outside of the tarpaulin frame 100 without entering the interior, thereby improving the device's wind and rain protection.

[0112] It should be noted that the rotation mode of the shielding member 240 compared to the tarpaulin cover 200 can be driven by the setting of a driving component; or, the connection between the shielding member 240 and the tarpaulin cover 200 can be set as an elastic structure, so that the shielding member 240 can be rotated compared to the tarpaulin cover 200 under the elastic force of the elastic structure. The present application does not limit the rotation connection structure between the shielding member 240 and the tarpaulin cover 200.

[0113] Further, continue to refer to Figure 12 As shown, the shielding member 240 has a fixing portion 243 , and the tarpaulin frame 100 has a matching portion 140 . The fixing portion 243 matches with the matching portion 140 to achieve a fixed connection between the shielding member 240 and the tarpaulin frame 100 .

[0114] After the shielding member 240 is flipped downward, it is fixed to the tarpaulin frame 100, which can lock the position of the tarpaulin cover 200, so that the tarpaulin cover 200 can provide a stable shielding effect on the tarpaulin frame 100, preventing the tarpaulin cover 200 from being blown or shaken by airflow and moving relative to the tarpaulin frame 100. At the same time, the position of the shielding member 240 can be fixed, preventing the shielding member 240 from being disturbed by airflow and flipping upward, thereby losing its shielding function.

[0115] Regarding the specific coupling method between the fixing portion 243 and the mating portion 140, the present application can have various different implementations. In one implementation, one of the fixing portion 243 and the mating portion 140 can be a raised structure, and the other can be a recessed structure. The engagement between the raised and recessed structures enables a snap-fit ​​connection between the two, facilitating coupling and providing a high connection strength. In another implementation, one of the fixing portion 243 and the mating portion 140 can be a female Velcro tape, and the other can be a male Velcro tape, allowing the two to be adhered and secured.

[0116] In other embodiments, referring to Figure 13 As shown, the tarpaulin frame 100 further has an upwardly protruding stopper 150 . The stopper 150 is located at the edge of the tarpaulin frame 100 , and the shielding member 240 can rest on the surface of the stopper 150 .

[0117] The stopper 150 not only limits the movement of the tarpaulin cover 200 but also provides a clear indication of its position. When the tarpaulin cover 200 stops at the stopper 150, it indicates that it has been properly covered and cannot move further, preventing it from sliding out of the other side of the tarpaulin frame 100. Furthermore, the stopper 150 abuts against the shielding member 240, facilitating its connection with the tarpaulin frame 100 and ensuring a more stable connection. Furthermore, the stopper 150 provides a second line of defense against the gap between the tarpaulin cover 200 and the tarpaulin frame 100. Even if wind or rain does enter the tarpaulin frame 100, the presence of the stopper 150 further tortuously reduces the fluid flow path inside the shielding member 240, further preventing fluid from entering the tarpaulin frame 100.

[0118] After the fluid enters the shielding member 240, it needs to flow upward to a position higher than the stopper 150 before it can pass the stopper 150 and enter the tarpaulin frame 100. Therefore, the stopper 150 can block the fluid entering the shielding member 240 again, thereby improving the wind and rainproof effect of the equipment.

[0119] Further, continue to refer to Figure 13 As shown, a seal 151 is provided at the contact point between the stopper 150 and the shielding member 240. The seal 151 seals the gap between the stopper 150 and the shielding member 240, improving the sealing effect. The seal 151 can be provided on the side of the shielding member 240 facing the stopper 150, or on the top of the stopper 150. When the two members are in contact, the weight of the shielding member 240 compresses the seal 151, causing it to elastically deform, thus improving the sealing effect.

[0120] In some embodiments, reference Figure 14As shown, the tarpaulin frame 100 may further include a stake 160 connected to the horizontal bar 130; the tarpaulin cover 200 may further include a first covering portion 250 and a second covering portion 260 that cover the top opening of the tarpaulin frame 100 in a split type, the first covering portion 250 being able to translate and flip along the horizontal bar 130 until it is parallel to the stake 160 on one side, and the second covering portion 260 being able to translate and flip along the horizontal bar 130 until it is parallel to the stake 160 on the other side.

[0121] As will be appreciated, by configuring the tarpaulin cover 200 in a split configuration, the first and second covering portions 250, 260 can operate simultaneously to open the top opening of the tarpaulin frame 100, shortening the time required for the tarpaulin cover 200 to open the top opening. Furthermore, by configuring the first and second covering portions 250, 260 to be capable of translational rotation along the horizontal bar 130, the first and second covering portions 250, 260 are aligned parallel to the upright posts 160 after rotation. This arrangement ensures that the fully opened tarpaulin cover 200 does not occupy additional longitudinal or lateral space, allowing trucks to enter relatively narrow spaces for loading and unloading. This not only expands the applicable space of the truck tarpaulin system, but also reduces user labor intensity and improves truck loading and unloading efficiency.

[0122] Further, refer to Figure 15 As shown, the first covering portion 250 is provided with a first fastening member 251 at the side edge abutting against the second covering portion 260, and the second covering portion 260 is provided with a second fastening member 261 at the side edge abutting against the first covering portion 250; the first fastening member 251 and the second fastening member 261 can enter a fastening state or a separation state as the first covering portion 250 and the second covering portion 260 approach or move away.

[0123] The present application provides a first fastening member 251 and a second fastening member 261. When the first covering portion 250 and the second covering portion 260 are close to each other, the first fastening member 251 can cooperate with the second fastening member 261 to enter a fastened state, so as to seal the gap at the connection between the first covering portion 250 and the second covering portion 260, thereby preventing external pollutants from invading the interior of the tarpaulin frame 100 or preventing dust in the tarpaulin frame 100 from spreading to the outside.

[0124] Regarding the specific structures of the first fastening member 251 and the second fastening member 261, the present application can have a variety of different implementations:

[0125] Implementation Method 1

[0126] Reference Figure 15As shown, the first fastening member 251 has a downwardly bent shielding eave 252, and the second fastening member 261 has an upwardly bent diversion eave 262 extending below the shielding eave 252. The horizontal bar 130 has an upwardly convex protrusion 131, which can lift the first covering portion 250 passing through it to disengage the shielding eave 252 from the diversion eave 262.

[0127] By providing a shielding eave 252 on the first fastening member 251 and a guide eave 262 on the second fastening member 261, when the first fastening member 251 and the second fastening member 261 are in the fastened state, the shielding eave 252 and the guide eave 262 have an overlapping area when projected on the horizontal plane. Dirt that falls on the first fastening member 251 can fall along the shielding eave 252 and onto the guide eave 262, and the guide eave 262 can guide the dirt to prevent it from falling into the tarpaulin rack 100. By providing an upwardly protruding point 131 on the horizontal bar 130, when the first covering part 250 moves away from the second covering part 260, the protruding point 131 can lift the first covering part 250, so that the shielding eave 252 and the guide eave 262 are separated from each other, and the first covering part 250 and the second covering part 260 are easily separated.

[0128] In addition to using the protrusion 131 to achieve the separation of the first covering part 250 and the second covering part 260, this embodiment can also adopt a variety of any feasible implementation methods. For example, a groove can also be provided on the horizontal bar 130. When the second covering part 260 moves away from the first covering part 250, the second covering part 260 can sink into the groove, so that the guide eaves 262 can move downward relative to the shielding eaves 252, thereby facilitating the separation of the first covering part 250 and the second covering part 260.

[0129] It should be further explained that sealing strips are provided on the shielding eaves 252 and the guide eaves 262 in this embodiment. When the first fastening member 251 and the second fastening member 261 are in the fastened state, the sealing strip can seal the gap between the shielding eaves 252 and the guide eaves 262, further reducing the material exchange inside and outside the tarpaulin frame 100. Among them, the sealing strip can be implemented in any of a variety of feasible ways, such as rubber strips, silicone strips or textiles, etc.

[0130] Implementation Method 2

[0131] The first fastening member 251 is a crescent-shaped structure with a groove, and the second fastening member 261 is a spherical structure that fits into the groove. The crescent-shaped structure is made of a flexible material. When the first and second covering parts 250 and 260 are brought together, the spherical structure fits into the crescent-shaped structure to form a seal. When the first and second covering parts 250 and 260 move apart, the spherical structure separates from the crescent-shaped structure, allowing the first and second covering parts 250 and 260 to open the top of the tarpaulin rack 100.

[0132] In some embodiments, reference Figure 16 and Figure 17 As shown, the tarpaulin cover 200 includes a first covering portion 250 and a second covering portion 260 that are rotatably connected, so that the second covering portion 260 can move toward and away from the first covering portion 250 and is used to open or cover the top opening of the tarpaulin frame 100.

[0133] In this embodiment, the tarpaulin cover 200 is configured as a foldable structure. The second covering portion 260 is moved to allow the tarpaulin cover 200 to expand or collapse, thereby covering the top of the tarpaulin frame 100. This structure of the tarpaulin cover 200 allows cargo within the vehicle compartment to be evacuated, facilitating loading and unloading through the top opening of the tarpaulin frame 100. Furthermore, once the tarpaulin cover 200 covers the top opening of the tarpaulin frame 100, the shielding members 240 at the edges of the tarpaulin cover 200 can be controlled to flip relative to the tarpaulin cover 200 so that the shielding members 240 tilt downward and rest against the tarpaulin frame 100, thereby blocking the gap between the tarpaulin cover 200 and the tarpaulin frame 100. This improves the seal between the tarpaulin cover 200 and the tarpaulin frame 100, preventing wind and rain from entering the tarpaulin frame 100, and preventing cargo from spilling.

[0134] In other embodiments, referring to Figure 18 As shown, a locking member 211 is provided on the outer wall of the crossbeam 210, and a locking member 132 is provided on the surface of the crossbar 130 corresponding to the locking member 211; when the tarpaulin cover 200 moves along the crossbar 130, the locking member 211 can cooperate with the locking member 132 to limit the vertical displacement of the tarpaulin cover 200 relative to the tarpaulin frame 100.

[0135] The provision of the locking member 211 and the locking member 132 can greatly limit the vertical displacement of the tarpaulin cover 200 relative to the tarpaulin frame 100 when the tarpaulin cover 200 moves to the horizontal bar 130, especially when the tarpaulin cover 200 closes the opening of the tarpaulin frame 100, thereby improving the stability of the truck tarpaulin system. The locking member 211 can be a locking plate with an L-shaped cross-section, and the locking member 132 can be a locking plate with a U-shaped cross-section. The L-shaped locking plate and the U-shaped locking plate can engage with each other in the vertical direction. It is understood that the specific structure of the locking member 211 and the locking member 132 can be implemented in a variety of different ways by those skilled in the art. For example, the locking member 211 can also be a T-shaped plate, and the locking member 132 can also be a locking block with a T-shaped slot. The specific structure of the locking member 211 and the locking member 132 is not limited in this application. Moreover, both the locking member 211 and the locking member 132 can be arranged only on the outer wall of one side of the beam 210 and the horizontal bar 210, or can be arranged on the outer walls of both sides of the beam 210 and the horizontal bar 210. This application does not limit the arrangement method of the locking member 211 and the locking member 132.

[0136] Further, continue to refer to Figure 18 As shown, the outer wall of the crossbeam 210 is further provided with a stopper 212 extending toward the tarpaulin frame 100. The stopper 212 can abut against the surface of the crossbar 130 to limit the horizontal displacement of the tarpaulin cover 200 relative to the tarpaulin frame 100. The stopper 212 can be a baffle or block protruding from the bottom surface of the crossbeam 210, and the present application does not limit the specific structure of the stopper 212. Furthermore, the stopper 212 can be provided on the outer wall of one side of the crossbeam 210, or on the outer walls of both sides of the crossbeam 210, and the present application does not limit the arrangement of the stopper 212.

[0137] In addition, an embodiment of the present invention further provides a carriage, comprising a carriage body (not shown) and the above-described truck tarpaulin system, which is disposed on the exterior of the carriage body. By providing the above-described truck tarpaulin system, the carriage provided by the present application can greatly facilitate the user's loading and unloading process, thereby facilitating user experience.

[0138] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. Similarly, in order to streamline the present invention and facilitate understanding of one or more of the various aspects of the present invention, in the above description of exemplary embodiments of the present invention, various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. The claims that follow the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present invention.

[0139] It should be noted that the above embodiments illustrate rather than limit the present invention, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments should not be understood as limiting the order of execution unless otherwise specified.

Claims

1. A truck tarpaulin system, characterized in that: It includes a tarpaulin frame, a tarpaulin cover matched with the tarpaulin frame, and a crawling device arranged on the tarpaulin cover; The tarpaulin frame includes a frame body and a guide member, wherein the frame body has a first rib and a second rib oppositely disposed, and a guide groove formed between the first rib and the second rib, and the guide member is formed on a surface of one of the first rib and the second rib; The crawling device comprises: a crawling seat fixed to the tarpaulin cover; Transmission components, including a fixed frame located in the crawling seat; A transmission shaft is arranged along the center line of the crawling seat, and its two ends can pass through the fixing frame and be rotatably connected to the crawling seat; A transmission member sleeved on the outside of the transmission shaft, capable of cooperating with the guide member; Guide assembly, including a connecting rod, one end of which is connected to the outer wall of the fixing frame; The guide wheel rotatably connected to the other end of the connecting rod has a rotation axis perpendicular to the rotation axis of the transmission shaft, and the guide wheel contacts the inner wall of the crawling seat to achieve relative movement between the fixed frame and the crawling seat.

2. The truck tarpaulin system according to claim 1, characterized in that: The transmission assembly further comprises: A connecting plate, with connecting holes and mounting holes respectively formed at both ends, through which the transmission shaft can pass to connect with the connecting plate; The roller is rotatably connected to the connecting plate through the mounting hole to achieve sliding fit between the roller and the guide groove.

3. The truck tarpaulin system according to claim 2, characterized in that: The transmission assembly further comprises: A first limiting bearing sleeved on the outer side of the transmission shaft and located between the connecting plate and the fixing frame; The second limit bearing is sleeved on the outside of the transmission shaft and is located between the connecting plate and the transmission member, and the first limit bearing and the second limit bearing are respectively in contact with the inner wall of the fixed frame, the side wall of the connecting plate and the surface of the transmission member to limit the axial displacement of the connecting plate and the transmission member relative to the transmission shaft.

4. The truck tarpaulin system according to claim 3, characterized in that: The transmission shaft comprises a cylindrical section and a prismatic section connected to each other, and the prismatic section is respectively matched with the transmission member, the first limit bearing, the second limit bearing and the connecting hole; The cylindrical sections are located on both sides of the prismatic section and are provided with sliding sleeves.

5. The truck tarpaulin system according to claim 3, characterized in that: The fixed frame includes: a frame having an installation space for accommodating the connecting plate, the transmission member, the first limit bearing, and the second limit bearing; The buffer plates are arranged on both sides of the frame along the axial direction of the transmission shaft, and a buffer gap is formed between the buffer plates and the outer wall of the frame.

6. The truck tarpaulin system according to claim 4, characterized in that: The crawling seat comprises: The first seat body is provided with a first assembly hole; A second base body arranged opposite to the first base body is provided with a second assembly hole, and an assembly gap is formed between the first base body and the second base body, and the sliding sleeve is located in the assembly gap; A fixing plate having fixing holes corresponding to the first assembly hole and the second assembly hole; A fastener can pass through the fixing hole, the first assembly hole and the second assembly hole to achieve connection between the first base body, the second base body and the fixing plate.

7. The truck tarpaulin system according to claim 4, characterized in that: The crawling device also includes a driving member connected to the cylindrical section.

8. The truck tarpaulin system according to claim 7, characterized in that: The transmission member is a sprocket, the guide member is a chain matched with the sprocket, and the driving member is a driving motor.

9. The truck tarpaulin system according to claim 1, characterized in that: The truck tarpaulin system further comprises a tarpaulin covering the outside of the tarpaulin frame, a cloth rolling assembly connected to the edge of the tarpaulin, and a guide rod assembly respectively connected to the crawling seat and the cloth rolling assembly.

10. A carriage, characterized in that: It comprises a vehicle body and a truck tarpaulin system as described in any one of claims 1 to 9, wherein the truck tarpaulin system is arranged on the outside of the vehicle body.

Images