Truck tarpaulin system and carriage

Abstract

The invention provides a truck tarpaulin system and a compartment. 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 embodiments of the present invention relate to the technical field of transportation machinery, and in particular to a truck tarpaulin system and a truck compartment. Background Art

[0002] During the transportation or storage of goods, in order to prevent the goods in the cargo box from being blown away by the wind, or to prevent dust and other pollutants that may exist in the cargo box from entering the air and polluting the environment, or to protect the goods, tarpaulins are usually used to wrap and cover the goods. Traditionally, the manual method of covering the tarpaulin is time-consuming and labor-intensive, and often requires multiple people to complete it. The efficiency is very low and it is difficult to meet the increasing freight requirements; and sometimes the staff are required to climb onto the carriage to operate, which not only increases the burden on the staff, but is also very dangerous and increases the risk of injury to the staff.

[0003] Based on this, automatic tarpaulin devices that can automatically cover cargo with tarpaulin have appeared on the market to replace manual covering. Specifically, the automatic tarpaulin device is usually arranged on the outside of the truck compartment, and includes a tarpaulin cover and a tarpaulin frame connected to each other, wherein the tarpaulin frame may be provided with a chain, the tarpaulin cover may be provided with a sprocket matched with the chain, the driving member is connected to the sprocket, and the relative movement between the tarpaulin cover and the tarpaulin frame is achieved through the transmission cooperation between the sprocket and the chain.

[0004] In the actual application of the automatic tarpaulin device of this structure, the truck compartment may be deformed under the impact of external force or the squeeze of the internal goods. When this deformation is transmitted to the automatic tarpaulin device, the structure of the tarpaulin frame or the tarpaulin cover itself is often deformed. Specifically, when the crossbar in the tarpaulin frame or the crossbeam in the tarpaulin cover is deformed, the cooperation between the chain and the sprocket will interfere with each other, resulting in the tarpaulin cover being stuck relative to the tarpaulin frame, and the two can no longer move smoothly relative to each other. In addition, during the flipping process of the tarpaulin cover, due to the large weight of the tarpaulin cover itself and the weight of the tarpaulin outside the tarpaulin cover, the impact force of the tarpaulin cover on the tarpaulin frame is also greater. This huge impact will not only cause a huge noise during the flipping process of the tarpaulin cover, but also is not conducive to maintaining the stability of the tarpaulin frame, tarpaulin cover and other structures, causing a large degree of shaking between the two, and may also bring certain safety hazards. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides 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 and a tarpaulin cover matching the tarpaulin frame, and a crawling device arranged on the tarpaulin cover, wherein a guide member is arranged on the tarpaulin frame;

[0007] The crawling device includes:

[0008] A crawling seat fixed to the tarpaulin cover;

[0009] Transmission components, including

[0010] A fixed frame located in the crawler seat;

[0011] 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 with the crawling seat;

[0012] The transmission member sleeved on the outside of the transmission shaft can cooperate with the guide member;

[0013] Guide components, including

[0014] A connecting rod, one end of which is connected to the outer wall of the fixed frame;

[0015] 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.

[0016] In some embodiments, the tarp frame comprises:

[0017] The frame body has a first rib and a second rib that are arranged opposite to each other, and a guide groove formed between the first rib and the second rib;

[0018] The guide member is formed on a surface of one of the first rib and the second rib.

[0019] In some embodiments, the transmission assembly further comprises:

[0020] The connecting plate has connecting holes and mounting holes at both ends, and the transmission shaft can pass through the connecting holes to connect with the connecting plate;

[0021] The roller is rotatably connected to the connecting plate through the mounting hole to achieve sliding fit between the roller and the guide groove.

[0022] In some embodiments, the transmission assembly further comprises:

[0023] A first limit bearing sleeved on the outer side of the transmission shaft and located between the connecting plate and the fixing frame;

[0024] The second limit bearing sleeved on the outside of the transmission shaft 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.

[0025] 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;

[0026] The cylindrical sections are located on both sides of the prism section and are provided with sliding sleeves.

[0027] In some embodiments, the fixed frame includes

[0028] The frame has an installation space for accommodating the connecting plate, the transmission member, the first limit bearing and the second limit bearing;

[0029] The buffer plates are arranged on both sides of the frame body 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 body.

[0030] In some embodiments, the crawler seat comprises:

[0031] The first seat body is provided with a first assembly hole;

[0032] The second seat body is arranged opposite to the first seat body, and is provided with a second assembly hole, and an assembly gap is formed between the first seat body and the second seat body, and the sliding sleeve is located in the assembly gap;

[0033] A fixing plate having fixing holes corresponding to the first assembly hole and the second assembly hole;

[0034] The fastener can pass through the fixing hole, the first assembly hole and the second assembly hole to achieve the connection between the first seat body, the second seat body and the fixing plate.

[0035] In some embodiments, the crawling device further comprises a driving member connected to the cylindrical segment.

[0036] 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.

[0037] 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.

[0038] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0039] 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 guiding 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 drive the tarpaulin cover to move along the contour of the tarpaulin frame more smoothly. On the other hand, through the setting of 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 is flipped, 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 eliminate 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 to produce deformation. 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, which helps to maintain the stability of the relative movement process between the tarpaulin cover and the tarpaulin frame.

[0040] 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.

[0041] The above description is only an overview of the technical solution of the embodiment of the present invention. In order to more clearly understand the technical means of the embodiment of the present invention, 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 present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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:

[0043] Figure 1 It is a structural schematic diagram of a truck tarpaulin system provided by an embodiment of the present invention;

[0044] Figure 2 It is a structural schematic diagram of a tarpaulin frame provided by an embodiment of the present invention;

[0045] Figure 3 The embodiment of the present invention provides Figure 2 The enlarged schematic diagram of part A in the middle;

[0046] Figure 4 is a structural schematic diagram of a crawling device provided by an embodiment of the present invention;

[0047] Figure 5 is a structural schematic diagram of another crawling device provided by an embodiment of the present invention;

[0048] Figure 6 is a structural schematic diagram of another crawling device provided by an embodiment of the present invention;

[0049] Figure 7 is a structural schematic diagram of another crawling device provided by an embodiment of the present invention;

[0050] Figure 8 is a schematic structural diagram of a transmission shaft provided by an embodiment of the present invention;

[0051] Fig. 9 is a structural schematic diagram of another truck tarpaulin system provided by an embodiment of the present invention;

[0052] Fig.10 is a structural schematic diagram of another truck tarpaulin system provided by an embodiment of the present invention;

[0053] Fig.11 is a structural schematic diagram of another truck tarpaulin system provided by an embodiment of the present invention;

[0054] Fig.12 is a schematic structural diagram of a shielding member provided by an embodiment of the present invention;

[0055] Fig.13 is a schematic structural diagram of another shielding member provided by an embodiment of the present invention;

[0056] Fig.14 is a structural schematic diagram of another truck tarpaulin system provided by an embodiment of the present invention;

[0057] Fig.15 is a schematic structural diagram of a first fastening member and a second fastening member provided by an embodiment of the present invention;

[0058] Fig.16 It is a structural schematic diagram of a tarpaulin cover provided by an embodiment of the present invention;

[0059] Fig.17is a schematic structural diagram of another tarpaulin cover provided by an embodiment of the present invention;

[0060] Fig.18 It is a structural schematic diagram of a locking member and a locking member provided in an embodiment of the present invention.

[0061] In the figure:

[0062] 100 tarpaulin frame, 110 guide member, 120 frame body, 121 first rib, 122 second rib, 123 guide groove, 130 cross bar, 131 convex point, 132 locking member, 140 matching portion, 150 stopping portion, 151 sealing member, 160 stake;

[0063] 200 tarpaulin cover, 210 cross beam, 211 locking member, 212 limiting member, 220 side beam, 230 supporting net, 240 shielding member, 241 avoiding space, 242 guide curved surface, 243 fixing part, 250 first covering part, 251 first fastening member, 252 shielding eaves, 260 second covering part, 261 second fastening member, 262 guide eaves;

[0064] 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 prism section, 329 cylindrical section, 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;

[0065] 400 tarpaulin;

[0066] 500 cloth rolling assembly, 510 cloth rolling rod, 520 drive;

[0067] 600 guide rod assembly, 610 first connecting rod, 620 second connecting rod. DETAILED DESCRIPTION

[0068] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although 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 to the embodiments set forth herein.

[0069] Reference Figure 1-Figure 7As shown, an embodiment of the present invention provides a truck tarpaulin system, comprising 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, wherein the tarpaulin frame 100 is provided with a guide member 110; the crawling device 300 comprises a crawling seat 310 fixed to the tarpaulin cover 200, a transmission assembly 320 and a guide assembly 330, wherein the transmission assembly 320 comprises a fixing frame 321, a transmission shaft 322 and a transmission member 323, the fixing frame 321 is located in the crawling seat 310, and the transmission shaft 322 is arranged along the center line of the crawling seat 310, Its two ends can pass through the fixed frame 321 and be rotatably connected with the crawling seat 310. The transmission member 323 is sleeved on the outside of the transmission shaft 322 and can cooperate with the guide member 110; 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, and 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 the relative movement between the fixed frame 321 and the crawling seat 310.

[0070] It should be noted that when the truck tarpaulin system provided by the present application is applied to different types of truck compartments, such as a barge compartment, a flatbed compartment, a boarded compartment, a curtain-side compartment or a dump truck compartment, the specifications, dimensions, and external profiles 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 be detachably connected by means 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] In addition, for those long-sized carriages, such as carriages with a length of 17.5m or 13m, in order to improve the connection reliability between the truck tarpaulin system and the carriage, the tarpaulin rack 100 can be configured as multiple, and the multiple tarpaulin racks 100 are connected to the carriage to improve the structural stability of the truck tarpaulin system as a whole. And when there are multiple tarpaulin racks 100, each tarpaulin rack 100 can be provided with a guide 110; accordingly, the tarpaulin cover 200 is correspondingly provided with multiple crawling devices 300, and the multiple crawling devices 300 are adapted to the multiple guides 100, so that the movement process of the tarpaulin cover 200 relative to the tarpaulin rack 100 is more stable. Further, multiple crawling devices 300 can be driven by the driving member 349 described below, or only one of the multiple crawling devices 300 is 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, and the other crawling devices 300 are connected to each other by a synchronous shaft (not shown in the figure); in this way, the effect of synchronously driving multiple crawling devices 300 by one driving member 349 is achieved, so that each crawling device 300 has better synchronization. Preferably, the synchronous shaft can be a rigid shaft made of alloy steel, iron or other materials, or the synchronous shaft can also be a flexible shaft made of a flexible material such as a steel wire rope or a steel cable.

[0072] It should also be noted that the crawling device 300 can be fixed on the tarpaulin cover 200 by welding or integral molding, or can be detachably connected to the tarpaulin cover 200 by threaded connection, pin connection, clamping connection or plug connection, etc. The present 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 by the cooperation between the guide member 110 and the transmission member 323. The cooperation method between the guide member 110 and the transmission member 323 can be chain-sprocket cooperation, rack-gear cooperation, belt-pulley cooperation, etc. The present application does not limit the specific structure of the guide member 110 and the transmission member 323, and the specific cooperation and transmission method between the two.

[0073] It can be understood that the transmission member 323 is sleeved on the outside of the transmission shaft 322. If the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 is to be achieved through the cooperation between the transmission member 323 and the guide member 110, the transmission member 323 should be able to rotate with the rotation of the transmission shaft 322. In addition, if the relative movement between the fixed frame 321 and the crawling seat 310 is to be achieved, the transmission member 323 should also be able to slide along the axial direction of the transmission shaft 322, so that when the transmission member 323 is affected by the deviation of the guide member 110, the deviation force can be smoothly transmitted to the fixed frame 321. It can be found that in order to achieve both the synchronous transmission of the transmission shaft 322 to the transmission member 323 and the axial sliding of the transmission member 323 relative to the transmission shaft 322, the structure of the transmission shaft 322 should be reasonably set. 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 the transmission member 323 and the guide member 110 can be one, and the guide member 110 can be set in the guide groove 123 inside the frame 120, or can be set on the side wall of the frame 120. When the guide member 110 is set on the side wall of the frame 120, the tarpaulin frame 100 can also include a support member (not shown in the figure), wherein the support frame is located below the guide member 110 to achieve support and fixation for the guide member 110. Optionally, the support member can be a square tube, a round tube, a square column, a round column or the like.

[0075] Alternatively, the number of the transmission members 323 and the number of the guide members 110 may both be two, and the two transmission members 323 are respectively arranged on the two sides of the connecting plate 324, and the two guide members 110 are respectively arranged on the tarpaulin frame 100 corresponding to the positions of the two transmission members 323. Accordingly, two guide grooves for accommodating the two guide members 110 may be formed on the frame body 120 of the tarpaulin frame 100. It can be found that when the number of transmission members 323 and guide members 110 configured in the present application is different, the structure adapted to the transmission members 323 and the guide members 110 will also change, but this adaptive change does not exceed the main technical concept of the present application and still belongs to the protection scope claimed by the present application.

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

[0077] When the driving member 349 drivingly connected to the transmission shaft 322 is working, the transmission shaft 322 can rotate under the driving of the driving member 349, thereby driving the transmission member 323 to rotate synchronously with the transmission shaft 322, and 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 realizing the movement of the tarpaulin cover 200 relative to the tarpaulin frame 100. During this movement process, if the tarpaulin frame 100 or the tarpaulin cover 200 is subjected to external force, for example, the truck compartment is deformed in its length direction, the deformation is transmitted to the tarpaulin frame 100, and the vertical beam and the horizontal beam of the tarpaulin frame 100 are offset; when the horizontal beam to which the guide member 110 is fixed is horizontally offset, the guide member 110 can transmit the horizontal offset to the transmission member 323, and the transmission member 323 can further transmit the horizontal offset 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 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 between the transmission member 323 and the guide member 110 on the tarpaulin frame 100, the crawling seat 310 arranged 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 arranged 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. The crawling device 300 can drive the tarpaulin cover 200 to move along the contour of the tarpaulin frame 100 more smoothly by cooperating with each other, so as to avoid interference between the transmission member 323 and the guide member 110 due to displacement of the fixed frame 321, thereby facilitating the crawling device 300 to more smoothly drive the tarpaulin cover 200 to move along the contour of the tarpaulin frame 100; on the other hand, through the arrangement of the crawling seat 310, the transmission assembly 320, 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 turned over, the crawling seat 310 can first contact with 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 turning 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. Furthermore, the truck tarpaulin system provided in the present application can also be well adapted to scenarios in which the carriage expands. When the carriage expands, the support beams of the carriage are deformed by the squeezing of the cargo or the impact of external forces. 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 facilitating the stability of the relative movement process between the tarpaulin cover 200 and the tarpaulin frame 100.

[0079] In some embodiments, reference Figure 3 As shown, 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; the guide member 110 is formed on the surface of one of the first rib 121 and the second rib 122.

[0080] Further, refer to Figure 4-Figure 7 As shown, the transmission assembly 320 also includes a connecting plate 324 and a roller 325, wherein the connecting plate 324 has a connecting hole (not marked in the figure) and a mounting hole (not marked in the figure) at both ends, respectively, 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.

[0081] In order to ensure that the tarpaulin cover 200 can move along the contour of the tarpaulin frame 100, the tarpaulin cover 200 can also be stably connected with the tarpaulin frame 100 to prevent the tarpaulin cover 200 from being separated from the tarpaulin frame 100. The present application provides a guide groove 123 on the tarpaulin frame 100, and sets a roller 325 adapted to the guide groove 123 in the crawling device 300, so that the roller 325 can cooperate with the guide groove 123, and under the limit of the inner wall of the guide groove 123, the roller 325 is prevented from being separated from the guide groove 123, and then 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 setting method can further improve the stability of the tarpaulin cover 200 in the movement process compared with the tarpaulin frame 100, and prevent the two from being separated only under the cooperation of the transmission member 323 and the guide member 110.

[0082] It can be understood that, in addition to realizing 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 between the slider and the slide groove, or the method of cooperating between 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.

[0083] 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 sleeved 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, 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.

[0084] The first limit bearing 326 and the second limit bearing 327 are arranged, on the one hand, by abutting against the fixed frame 321, the connecting plate 324 and the side wall of the transmission member 323 to form a limit on the position of the transmission member 323 and the connecting plate 324, which not only enables the transmission assembly 320 to move as a whole along the axial direction of the transmission shaft 322 under the action of external force, but also limits the matching clearance between the transmission member 323 and the guide member 110, so that the transmission member 323 can be more accurately matched with the guide member 110, thereby ensuring the stability and reliability of the structure of the transmission assembly 320; on the other hand, the surface of the first limit bearing 326 and the second limit bearing 327 can also contact the surface of the tarpaulin frame 100, thereby improving the smoothness of the movement process 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 .

[0085] In other embodiments, the first limit bearing 326 and the second limit bearing 327 can be directly arranged on both sides of the fixed frame 321 in addition to being arranged coaxially with the transmission shaft 322. Compared with the arrangement coaxially with the transmission shaft 322, this arrangement mode mainly plays a guiding role between the crawling device 300 and the tarpaulin frame 100. In addition, in order to improve the guiding effect, a sleeve can be sleeved on the outer side of the first limit bearing 326 and the second limit bearing 327.

[0086] In a specific example, referring to Figure 8 As shown, the transmission shaft 322 has a connected cylindrical section 329 and a prismatic section 328. 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.

[0087] 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 matches the prism section 328; however, if the connecting hole that matches the prism section 328 also adopts a prism hole structure, the connecting plate 324 will also rotate synchronously with the transmission shaft 322. In view of the structure and the position of the connecting plate 324, the connecting plate 324 will interfere with the fixing frame 321 during the rotation process of the transmission shaft 322. Moreover, as a component for connecting the transmission shaft 322 and the roller 325, if the connecting plate 324 rotates with the transmission shaft 322, the roller 325 will press against the inner wall of the guide groove 123 with a greater pressing force, which is not conducive to the movement of the roller 325 in the guide groove 123, and further causes the crawling device 300 to be stuck and unable to continue to move along the contour of the tarpaulin frame 100. Therefore, in order to avoid the above situation, the connecting hole in the present application can be configured as a cylindrical hole so that the connecting plate 324 will not rotate with the rotation of the transmission shaft 322; or, the outer diameter of the prism section 328 can be set to be smaller than the inner diameter of the connecting hole so that there is a gap between the prism section 328 and the connecting hole.

[0088] In addition, configuring both ends of the transmission shaft 322 as cylindrical sections 329 can facilitate reliable connection between the transmission shaft 322 and an external driving member (such as a motor, etc.). In addition, the sliding sleeve 340 provided on the cylindrical section 329 can improve the rotation effect of the transmission shaft 322, making the rotation process of the transmission shaft 322 smoother.

[0089] 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 may also include a limit key (not shown in the figure), which cooperates with the first keyway and the second keyway respectively, and can 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.

[0090] 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 plate 342 is 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 plate 342 and the outer wall of the frame body 341.

[0091] The fixed frame 321 is a component that plays a supporting and fixing role 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 according to the size and shape of the connecting plate 324, the transmission member 323, the first limit bearing 326 and the second limit bearing 327 contained therein, and the present application does not limit this. In addition, the buffer plates 342 arranged on both sides of the frame body 341 can play a certain buffering role on the fixed frame 321 by virtue of the existence of the buffer gap 344 during the axial movement of the fixed frame 321 along the transmission shaft 322, thereby minimizing the impact of the fixed frame 321 on the crawling seat 310 or the sliding sleeve 340 and other parts, 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 choice according to the relevant design requirements of the product, and the present application does not limit this.

[0092] 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 notch makes it easier to separate the frame 341 and the buffer plate 342 from other components in the transmission assembly 320, such as the transmission shaft 322, the transmission member 323, the connecting plate 324, etc., making the transmission assembly 320 easier to disassemble, and facilitating the user to maintain the crawling device 300 later.

[0093] 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.

[0094] In this embodiment, the crawling seat 310 is configured as a split structure including a first seat body 345 and a second seat body 346. On the one hand, it is convenient to assemble the transmission assembly 320, the guide assembly 330 and the crawling seat 310 in the crawling device 300, and it is also convenient for the user to maintain the crawling device 300; on the other hand, the assembly gap formed by the crawling seat 310 of the split structure can be matched with the sliding sleeve 340, so that the crawling seat 310 can be fixed to the transmission assembly 320. In addition, the fastener 348 can be a threaded fastener 348 such as a screw or a bolt, or a plug-in fastener 348 such as a pin or a rivet; accordingly, the fixing hole, the first assembly hole and the second assembly hole can be a threaded hole or a light hole, and the present application does not limit the specific structure of the fastener 348, the fixing hole, the first assembly hole and the second assembly hole.

[0095] It is understandable that the crawling seat 310 can be an integrated structure in addition to the split structure. The crawling seat 310 with an integrated structure has better stability and structural strength, which can help to improve the reliability of the crawling device 300 to a certain extent. Those skilled in the art can reasonably configure the overall structure of the crawling seat 310 according to relevant product design requirements and comprehensively consider the production cost of the product during specific implementation.

[0096] In some embodiments, reference Figure 4-Figure 7 As shown, the crawling device 300 also includes a driving member 349 connected to the cylindrical section 329. Further, the transmission member 323 is a sprocket, the guide member 110 is a chain matched with the sprocket, and the driving member 349 is a driving motor. In addition to the driving motor, the driving member 349 can also be a hydraulic pump, a pneumatic pump, etc., and the present application does not limit the type of the driving member 349.

[0097] In some embodiments, reference Fig. 9 As shown, the truck tarpaulin system further includes a tarpaulin 400 covered on the outside of the tarpaulin frame 100, a cloth rolling assembly 500 connected to the edge of the tarpaulin 400, and a guide rod assembly 600 respectively connected to the crawling seat 310 and the cloth rolling assembly 500. Specifically, the cloth rolling assembly 500 may include a cloth rolling rod 510 and a driver 520 connected to the cloth rolling rod 510. The cloth rolling rod 510 and the edge of the tarpaulin 400 may be connected by sewing, bonding, etc. Under the driving action of the driver 520, the cloth rolling rod 510 rotates itself to drive the tarpaulin 400 to be rolled up or unfolded, and in the process of rolling up or unfolding the tarpaulin 400, the cloth rolling rod 510 can move along the contour 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 configuration of the cloth rolling assembly 500 can realize efficient and rapid deployment and retraction of the tarpaulin 400, saving manpower and material resources and having high safety.

[0098] In addition, the interface shape of the cloth rolling rod 510 can be square, rectangular or circular, etc., 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 also be provided inside the cloth rolling rod 510. Through the provision of the heating element, the cloth rolling rod 510 can transfer heat to the tarpaulin during the process of rolling up the tarpaulin, thereby thawing the ice formed on the surface of the tarpaulin in cold weather, thereby ensuring the stable operation of the equipment, and also helping to increase the service life of the tarpaulin itself.

[0099] Furthermore, a magnetic element may be provided inside the cloth rolling rod 510, and the tarpaulin cover 200 and / or the tarpaulin frame 100 may be provided with a magnetic element, or a part of the tarpaulin cover 200 and / or the tarpaulin frame 100 may be made of a magnetic material. Through the cooperation between the magnetic element and the magnetic element, or the cooperation between the magnetic element and the magnetic material, when the cloth rolling rod 510 moves along the outer contour of the tarpaulin cover 200 and / or the tarpaulin frame 100, the stability of the movement of the cloth rolling rod 510 is ensured, and to a certain extent, the cloth rolling rod 510 can be adsorbed on the surface of the tarpaulin cover 200 and / or the tarpaulin frame 100, so as to meet the user's requirements for different opening and closing degrees of the tarpaulin, and enable the device to adapt to various different scenarios.

[0100] It should also be noted that the tarpaulin covering the outer side of the tarpaulin cover 200 and / or the tarpaulin frame 100 in the present application can be a split structure or an integral 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 an integral structure, it can cover the top, sides, front and rear of the tarpaulin frame 100 respectively. The present application does not limit the specific structure of the tarpaulin 400.

[0101] Furthermore, a three-head connector (not shown) may be provided at the end of the cloth rolling rod 510. For example, the three-head connector may be connected to the cloth rolling rod 510, the motor and the handle respectively. When the motor fails or lacks power, the user may drive the cloth rolling rod 510 to move 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 the automatic driving of the cloth rolling rod 510, and it can also realize the manual driving of the cloth rolling rod 510, thereby improving the adaptability of the cloth rolling assembly 500 in different scenarios.

[0102] 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, for respectively driving the two cloth rolling rods 510 to rotate.

[0103] Further, continue to refer to Fig. 9 As shown, the guide rod assembly 600 includes a first connecting rod 610 and a second connecting rod 620 connected to each other, wherein 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, and 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 rotatably connected by a rotating shaft, or can be universally connected by a universal ball; 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 mutually nested manner, and the present application does not limit the specific connection between the above structures.

[0104] 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 retracting process of the tarpaulin 400.

[0105] It is understood that when the tarpaulin 400 is rolled up, in addition to the rolling rod 510, the tarpaulin can be rolled up. In other embodiments, the tarpaulin frame 100 may include a horizontal bar 130, a side bar (not shown in the figure) connected to the horizontal bar 130, and a slide rail (not shown in the figure) disposed at the bottom of the side bar; and when the tarpaulin 400 adopts a split structure, it may include a side tarpaulin for covering the side 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 a sliding member (not shown in the figure) may be disposed on the top edge of the side tarpaulin. 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 realizing the opening and closing of the carriage, and facilitating the side loading and unloading of goods. Optionally, the sliding member may be a slider, a pulley, etc.

[0106] Furthermore, refer to Fig.10 As shown, the tarpaulin cover 200 may include a cross beam 210 and a side beam 220 connected to the cross beam 210, and a support net 230; wherein the cross beam 210 and the side beam 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.

[0107] In some scenarios, the tarpaulin cover 200 can also be configured as a hardtop structure, or as a softtop structure. When the tarpaulin cover 200 is a hardtop structure, for example, a steel plate, an alloy plate or other structure can be set in the frame formed by the cross beam 210 and the side beam 220; when the tarpaulin cover 200 is a softtop, for example, a tarpaulin, a felt, a heat-insulating cotton, a heat-insulating quilt or other structure can be directly set in the frame formed by the cross beam 210 and the side beam 220. In addition, the tarpaulin itself can also be compounded into a multi-layer structure, for example, it can be a tarpaulin with heat-insulating and heating functions that is compounded by a tarpaulin body, a heating layer and a heat-insulating layer, wherein the heating layer can be a heating wire, a heating rod, etc.; the heat-insulating layer can be a heat-insulating cotton, a heat-insulating foam, etc. The present application does not limit the specific structures of the tarpaulin cover 200 and the tarpaulin 400.

[0108] It should be noted that since the cloth rolling rod 510 in the above-mentioned cloth rolling assembly 500 is usually set up on the side of the tarpaulin frame 100, the tarpaulin 400 connected to the cloth rolling rod 510 can mainly cover the top and side 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 a tarpaulin 400 connected to the elastic cloth tightening rod, wherein a rebound member (such as a coil spring, etc.) is arranged in the elastic cloth tightening rod; 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, so as to realize the storage of the tarpaulin 400 at the rear of the truck compartment.

[0109] Correspondingly, in order to cover the front of the truck compartment, the elastic cloth tightening rod arranged at the rear of the compartment can also be arranged at the front of the compartment. In addition, in another embodiment, for the tarpaulin 400 covering the side of the compartment, the length of the side tarpaulin 400 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 on the edge of the part, and then tensioning members such as steel wire ropes and straps are passed through the through holes. After being tightened, the exposed edge of the tarpaulin 400 can cover the front of the compartment and tighten and fix the entire tarpaulin 400.

[0110] In some embodiments, reference Fig.11 and Fig.12As shown, in order to shield 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 in the tarpaulin cover 200, and the shielding member 240 can be turned relative to the tarpaulin cover 200 and rest on the tarpaulin frame 100 to shield the gap between the tarpaulin cover 200 and the tarpaulin frame 100.

[0111] At least a portion of the shielding member 240 is bent in a direction away from the tarpaulin frame 100 , so as 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 .

[0112] The shielding member 240 is bent to form an escape space 241 and a guide curved surface 242 on both sides, respectively. The escape space 241 on the side facing the tarpaulin frame 100 can avoid the tarpaulin frame 100, so as to avoid interference between the shielding member 240 and the tarpaulin frame 100 during rotation, thereby affecting the shielding effect of the shielding member 240. The guide curved surface 242 on the side away from the tarpaulin frame 100 can guide the external fluid, so that wind or rainwater flows downward along the guide curved surface to the outside of the tarpaulin frame 100, and does not enter the tarpaulin frame 100, thereby improving the wind and rain shielding effect of the equipment.

[0113] 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 rotating connection structure between the shielding member 240 and the tarpaulin cover 200.

[0114] Further, continue to refer to Fig.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 .

[0115] After the shielding member 240 is flipped downward, it is fixed to the tarpaulin frame 100, so that the position of the tarpaulin cover 200 can be locked, so that the tarpaulin cover 200 can stably shield the tarpaulin frame 100, and prevent the tarpaulin cover 200 from being blown or shaken by the airflow and moving relative to the tarpaulin frame 100. At the same time, the position of the shielding member 240 can also be fixed, so that the shielding member 240 can be prevented from being flipped upward due to the disturbance of the airflow and losing the shielding function.

[0116] Regarding the specific matching mode between the fixing portion 243 and the matching portion 140, the present application can have a variety of different implementations. In one implementation, one of the fixing portion 243 and the matching portion 140 can be a raised structure, and the other can be a groove structure. Through the matching between the raised structure and the groove structure, the two can be snap-fitted and fixed, which is convenient for matching and has a high connection strength. In another implementation, one of the fixing portion 243 and the matching portion 140 is a Velcro female tape, and the other is a Velcro male tape, so that the two can be pasted and fixed.

[0117] In other embodiments, referring to Fig.13 As shown, the tarpaulin frame 100 further has a stopper 150 protruding upwards. The stopper 150 is located at the edge of the tarpaulin frame 100 , and the shielding member 240 can be placed on the surface of the stopper 150 .

[0118] The setting of the stopper 150 can, on the one hand, limit the movement of the tarpaulin cover 200 and provide a prompt of the tarpaulin cover 200 being in place; when the tarpaulin cover 200 moves to the stopper 150, it means that the tarpaulin cover 200 has covered the tarpaulin cover in place, and the tarpaulin cover 200 cannot move further, preventing the tarpaulin cover 200 from sliding out of the other side of the tarpaulin frame 100. On the other hand, the stopper 150 and the shielding member 240 overlap and cooperate, making it easier for the shielding member 240 to overlap with the tarpaulin frame 100, and the connection between the two is more stable. In addition, the stopper 150 forms a second line of defense for the gap between the tarpaulin cover 200 and the tarpaulin frame 100, even if wind or rain enters the interior of the tarpaulin frame 100, and due to the existence of the stopper 150, the fluid path inside the shielding member 240 is more tortuous, further preventing the fluid from entering the interior of the tarpaulin frame 100.

[0119] 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 over 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.

[0120] Further, refer to Fig.13 As shown, a sealing member 151 is provided at the contact position between the stopper 150 and the shielding member 240. The sealing member 151 seals the gap between the stopper 150 and the shielding member 240 to improve the sealing effect. The sealing member 151 can be provided on the side of the shielding member 240 facing the stopper 150, or can be provided on the top of the stopper 150. When the two are overlapped, the sealing member 151 is squeezed under the weight of the shielding member 240 itself to cause elastic deformation, thereby improving the sealing effect.

[0121] In some embodiments, reference Fig.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.

[0122] It is understandable that by setting the tarpaulin cover 200 as a split structure, the first covering part 250 and the second covering part 260 can move simultaneously to open the top opening of the tarpaulin frame 100, thereby shortening the time required for the tarpaulin cover 200 to open the top opening. In addition, by setting the first covering part 250 and the second covering part 260 to be able to translate and flip along the horizontal bar 130, the flipped first covering part 250 and the second covering part 260 are respectively parallel to the stake 160. In this way, the fully opened tarpaulin cover 200 does not occupy additional longitudinal space or lateral space, so that trucks can enter a relatively narrow space to load and unload goods, while expanding the applicable space of the truck tarpaulin system, reducing the labor intensity of users and improving the cargo loading and unloading efficiency of trucks.

[0123] Further, refer to Fig.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 from each other.

[0124] 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.

[0125] Regarding the specific structures of the first fastening member 251 and the second fastening member 261, the present application may have a variety of different implementations:

[0126] Implementation Method 1

[0127] Reference Fig.15As shown, the first fastening member 251 has a shielding eave 252 bent downward, and the second fastening member 261 has a diversion eave 262 extending below the shielding eave 252 and bent upward. The horizontal bar 130 has an upward convex point 131, which can lift the first covering part 250 passing through to disengage the shielding eave 252 from the diversion eave 262.

[0128] By providing a shielding eave 252 on the first fastening member 251 and a diversion eave 262 on the second fastening member 261, when the first fastening member 251 and the second fastening member 261 are in a fastened state, the projections of the shielding eave 252 and the diversion eave 262 on the horizontal plane have an overlapping area, and the dirt falling on the first fastening member 251 can fall along the shielding eave 252 onto the diversion eave 262, and the diversion eave 262 can guide the dirt to prevent the dirt from falling into the tarpaulin rack 100. By providing an upward convex point 131 on the horizontal bar 130, the convex point 131 can lift the first covering part 250 when the first covering part 250 is away from the second covering part 260, so that the shielding eave 252 and the diversion eave 262 are out of contact, and the first covering part 250 and the second covering part 260 are separated.

[0129] 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.

[0130] 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 a 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. The sealing strip can be selected from a variety of any feasible implementation methods, such as rubber strips, silicone strips or textiles, etc.

[0131] Implementation Method 2

[0132] The first fastening member 251 is configured as a crescent-shaped structure with a groove, and the second fastening member 261 is configured as a spherical structure that can be embedded in the groove, wherein the crescent-shaped structure is configured as a structure made of a flexible material. When the first covering portion 250 and the second covering portion 260 are close to each other, the spherical structure can be embedded in the crescent-shaped structure to form a seal; and when the first covering portion 250 and the second covering portion 260 are separated, the spherical structure can be separated from the crescent-shaped structure, so that the first covering portion 250 and the second covering portion 260 can open the top of the tarpaulin frame 100.

[0133] In some embodiments, reference Fig.16 and Fig.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 .

[0134] In this embodiment, the tarpaulin cover 200 is configured as a foldable structure. The tarpaulin cover 200 is expanded or folded and contracted as a whole by the movement of the second covering part 260, so as to cover the top of the tarpaulin frame 100. The tarpaulin cover 200 of this structure can avoid the goods in the compartment, and is convenient for loading and unloading goods through the top opening of the tarpaulin frame 100. In addition, after the tarpaulin cover 200 covers the top opening of the tarpaulin frame 100, the shielding member 240 at the edge of the tarpaulin cover 200 can be controlled to flip relative to the tarpaulin cover 200, so that the shielding member 240 flips downward and rests on the tarpaulin frame 100, thereby blocking the gap between the tarpaulin cover 200 and the tarpaulin frame 100, improving the sealing between the tarpaulin cover 200 and the tarpaulin frame 100, preventing wind and rain from entering the interior of the tarpaulin frame 100, and preventing the goods inside the tarpaulin frame 100 from spilling.

[0135] In other embodiments, referring to Fig.18 As shown, a locking member 211 is provided on the outer wall of the cross beam 210, and a locking member 132 is provided on the surface of the cross bar 130 corresponding to the locking member 211; when the tarpaulin cover 200 moves along the cross bar 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.

[0136] By setting the locking member 211 and the locking member 132, 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, the vertical displacement of the tarpaulin cover 200 relative to the tarpaulin frame 100 is greatly limited, thereby improving the stability of the truck tarpaulin system. Among them, 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 stop and cooperate in the vertical direction. It can be understood that, with respect to the specific structure of the locking member 211 and the locking member 132, those skilled in the art can implement it in a variety of different ways. 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 groove. The present application does not limit the specific structure of the locking member 211 and the locking member 132. Furthermore, both the locking member 211 and the locking member 132 can be arranged on the outer wall of one side of the beam 210 and the cross bar 210 only, or can be arranged on the outer walls of both sides of the beam 210 and the cross bar 210. The present application does not limit the arrangement method of the locking member 211 and the locking member 132.

[0137] Further, refer to Fig.18 As shown, the outer wall of the cross beam 210 is also provided with a stopper 212 extending toward the tarpaulin frame 100, and the stopper 212 can abut against the surface of the cross bar 130 to limit the horizontal displacement of the tarpaulin cover 200 relative to the tarpaulin frame 100. The stopper 212 can be a baffle, a block, etc. protruding from the bottom surface of the cross beam 210, and the present application does not limit the specific structure of the stopper 212. In addition, the stopper 212 can be set on the outer wall of one side of the cross beam 210, or on the outer walls of both sides of the cross beam 210, and the present application does not limit the setting method of the stopper 212.

[0138] In addition, an embodiment of the present invention further provides a carriage, comprising a carriage body (not shown) and the above-mentioned truck tarpaulin system, wherein the truck tarpaulin system is arranged outside the carriage body. By setting the above-mentioned truck tarpaulin system, the carriage provided by the present application can greatly facilitate the loading and unloading process of the user, which is beneficial to the user experience.

[0139] In the description provided herein, a large number of 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 simplify the present invention and help understand one or more of the various inventive aspects, in the above description of 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. Wherein, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present invention.

[0140] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" 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 a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. 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, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A truck tarpaulin system, characterized in that: It comprises a tarpaulin frame, a tarpaulin cover matching the tarpaulin frame, and a crawling device arranged on the tarpaulin cover, wherein the tarpaulin frame is provided with a guide; 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 arranged along the center line of the crawling seat, with both ends of which 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 can cooperate with the guide member; Guide components, 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 tarpaulin frame comprises: The frame body has a first rib and a second rib that are arranged opposite to each other, and a guide groove formed between the first rib and the second rib; A guide is formed on a surface of one of the first rib and the second rib.

3. The truck tarpaulin system according to claim 2, characterized in that: The transmission assembly also includes: A connecting plate, with connecting holes and mounting holes respectively formed at both ends, and the transmission shaft can pass through the connecting holes to be connected to 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.

4. The truck tarpaulin system according to claim 3, characterized in that: The transmission assembly also includes: A first limit bearing sleeved on the outer side of the transmission shaft and located between the connecting plate and the fixing frame; The second limit bearing sleeved on the outside of the transmission shaft 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.

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

6. The truck tarpaulin system according to claim 4, 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 body 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 body.

7. The truck tarpaulin system according to claim 5, characterized in that: The crawling seat comprises: The first seat body is provided with a first assembly hole; A second seat body arranged opposite to the first seat body is provided with a second assembly hole, and an assembly gap is formed between the first seat body and the second seat 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 seat body, the second seat body and the fixing plate.

8. The truck tarpaulin system according to claim 5, characterized in that: The crawling device also includes a driving member connected to the cylindrical section.

9. The truck tarpaulin system according to any one of claim 8, 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.

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.

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