Truck tarpaulin system

Abstract

The invention provides a truck tarpaulin system which comprises a tarpaulin frame provided with a first connecting part formed on the outer contour of the tarpaulin frame. The tarpaulin covers the outer side of the tarpaulin frame and is provided with a side edge and a bottom edge which are connected with each other, and the side edge of the tarpaulin is provided with a second connecting part; the side wall of the cloth rolling rod is connected with the bottom edge, and the tarpaulin can be unfolded and folded on the outer side of the cloth rolling rod in the circumferential direction of the cloth rolling rod along with rotation of the cloth rolling rod, so that the cloth rolling rod moves along the outer contour of the tarpaulin frame; wherein in the process that the cloth rolling rod moves along the outer contour of the tarpaulin frame, the first connecting part is matched with the second connecting part so as to seal a gap between the tarpaulin and the tarpaulin frame. Automatic sealing of the tarpaulin relative to the tarpaulin frame is achieved, a user does not need to manually take other sealing measures, user experience is facilitated, the burden of the user is reduced, and safety is higher.

Description

Technical Field

[0001] The invention relates to the technical field of transportation equipment, and in particular to a truck tarpaulin system. Background Art

[0002] During the transportation or storage of goods, in order to prevent the goods in the cargo compartment from being blown away by the wind, or to prevent pollutants such as dust that may exist in the cargo compartment 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, there are some automatic tarpaulin equipment in the prior art, including a tarpaulin frame arranged outside the carriage and a cloth rolling device arranged outside the tarpaulin frame. Among them, the cloth rolling device includes a cloth rolling rod and a motor connected to the cloth rolling rod. The cloth rolling rod is connected to the edge of the tarpaulin. Under the drive of the motor, the cloth rolling rod rotates and can roll up the tarpaulin to the outside of the cloth rolling rod. At the same time, the cloth rolling rod will also move along the contour of the tarpaulin frame as the tarpaulin is rolled up. Although the automatic tarpaulin equipment of this structure realizes the automatic rolling up of the tarpaulin to a certain extent, due to the lack of corresponding sealing structure between the tarpaulin and the tarpaulin frame, when the tarpaulin is unfolded and covered on the surface of the tarpaulin frame, there will always be a gap of varying sizes between the tarpaulin and the tarpaulin frame. The existence of this gap, on the one hand, makes it impossible for the tarpaulin to fully cover the carriage, which is not conducive to protecting the goods in the carriage; on the other hand, when the truck is driving at high speed, the high-speed air will enter the gap, which is very likely to cause the tarpaulin to be lifted, seriously affecting the normal transportation of goods. In addition, even if the user fastens the tarpaulin to the tarpaulin frame with tools such as straps and nylon ropes to avoid the above gap, this method still belongs to the category of manual operation. Since the tarpaulin cannot be fully automatically rolled up and sealed, it will also increase the burden on users and bring certain safety risks to users.

[0004] This shows that the prior art needs to be further improved and enhanced. Summary of the invention

[0005] In view of the above problems, an embodiment of the present invention provides a truck tarpaulin system to solve the problem that the existing automatic tarpaulin equipment cannot achieve automatic sealing between the tarpaulin and the tarpaulin frame.

[0006] An embodiment of the present invention provides a truck tarpaulin system, comprising:

[0007] A tarpaulin frame having a first connecting portion formed on an outer contour thereof;

[0008] The tarpaulin covering the outer side of the tarpaulin frame has a side edge and a bottom edge connected to each other, and a second connecting portion is provided on the side edge;

[0009] The cloth rolling rod has a side wall connected to the bottom edge, and as the cloth rolling rod rotates, the tarpaulin can be extended and retracted to the outside of the cloth rolling rod along the circumference of the cloth rolling rod, so that the cloth rolling rod moves along the outer contour of the tarpaulin frame;

[0010] When the cloth rolling rod moves along the outer contour of the tarpaulin frame, the first connecting portion cooperates with the second connecting portion to seal the gap between the tarpaulin and the tarpaulin frame.

[0011] In some embodiments, the first connecting portion is a female Velcro patch, and the second connecting portion is a male Velcro patch, and the male Velcro patches are bonded to each other.

[0012] In some embodiments, the first connecting portion is a first chain belt having primary chain teeth, and the second connecting portion is a second chain belt having secondary chain teeth;

[0013] The truck tarpaulin system also includes

[0014] The pull head is respectively matched with the main chain teeth and the auxiliary chain teeth;

[0015] A driving member connected to the end of the cloth rolling rod;

[0016] The cloth sealing device is connected to the pull head and the driving member respectively, and in response to the driving action of the driving member, the pull head can move along the outer contour of the tarpaulin frame under the drive of the cloth sealing device to achieve staggered engagement or separation between the main chain teeth and the auxiliary chain teeth.

[0017] In some embodiments, the cloth sealing device comprises:

[0018] A fixing plate connected to the pull head;

[0019] A connecting piece, two ends of which are respectively connected to the fixing plate and the driving piece.

[0020] In some embodiments, a pull ring is provided on the surface of the fixing plate;

[0021] The connecting piece has a horizontal section and a vertical section connected to each other. The head end of the horizontal section is plugged into the pull ring, the tail end of the horizontal section is fixedly connected to the first end of the vertical section, and the second end of the vertical section is rotationally connected to the driving piece.

[0022] In some embodiments, the connecting member includes: a first connecting rod, a second connecting rod and a third connecting rod, the two ends of the second connecting rod are respectively rotatably connected to one end of the first connecting rod and one end of the third connecting rod, and the other end of the first connecting rod and the other end of the third connecting rod are respectively connected to the driving member and the fixed plate.

[0023] In some embodiments, a shaft sleeve is disposed on the top of the driving member, and a rotating shaft is disposed on the end of the first connecting rod, and the rotating shaft cooperates with the shaft sleeve to realize a rotational connection between the first connecting rod and the driving member.

[0024] In some embodiments, the tarpaulin includes a main fabric and a side fabric, the first connecting portion is formed at a side edge of the side fabric, and the second connecting portion is formed at a side edge of the main fabric;

[0025] The tarpaulin frame comprises a stake and a horizontal bar connected with the stake, and the side cloth is fixed on the surface of the stake.

[0026] In some embodiments, the truck tarpaulin system further comprises:

[0027] A cloth tightening assembly arranged on the tarpaulin frame, connected to the edge cloth, and having a rotation axis parallel to the height direction and / or width direction of the tarpaulin frame;

[0028] Wherein, as the cloth tightening assembly rotates along the rotation axis, the tarpaulin can be tightened along the extension direction of the bottom edge.

[0029] In some embodiments, the truck tarpaulin system further comprises:

[0030] A tarpaulin cover matched with the tarpaulin frame comprises a crossbeam and a side beam connected to the crossbeam, and a flap device arranged on the crossbeam;

[0031] The cross bar is provided with a guide piece, and the flip cover device cooperates with the guide piece, so that the tarpaulin cover can move along the cross bar driven by the flip cover device, so as to realize the flipping of the tarpaulin cover relative to the tarpaulin frame.

[0032] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0033] The present invention provides a truck tarpaulin system, comprising a tarpaulin frame, a tarpaulin covered on the outside of the tarpaulin frame, a rolling rod and a driving member. The tarpaulin frame has a first connection part, and the side edge of the tarpaulin has a second connection part. Under the drive of the driving member, the rolling rod makes the first connection part cooperate with the second connection part in the process of unfolding and retracting the tarpaulin, so as to realize the connection between the tarpaulin and the tarpaulin frame, and seal the gap between the two. The truck tarpaulin system of this structure, on the one hand, can make the tarpaulin cover the compartment more tightly through the cooperation between the first connection part and the second connection part, so as to improve the protective effect of the tarpaulin on the goods inside the compartment; on the other hand, even if the truck is running at high speed, the tarpaulin will not be blown up by the strong wind, so as to improve the stability and reliability of the equipment, which is conducive to the smooth transportation of the goods; on the other hand, the first connection part and the second connection part can cooperate or separate with the movement of the rolling rod, so as to realize the automatic sealing of the tarpaulin relative to the tarpaulin frame, and the user does not need to manually take other sealing measures, which is conducive to user experience, reduces the burden of the user, and is safer.

[0034] 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

[0035] 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:

[0036] Figure 1 It is a structural schematic diagram of a truck tarpaulin system provided by the present invention;

[0037] Figure 2 It is a structural schematic diagram of another truck tarpaulin system provided by the present invention;

[0038] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0039] Figure 4 It is a structural schematic diagram of a tarpaulin frame provided by the present invention;

[0040] Figure 5 It is a structural schematic diagram of another truck tarpaulin system provided by the present invention;

[0041] Figure 6 It is a side view of a truck tarpaulin system provided by the present invention;

[0042] Figure 7 The present invention provides Figure 6 A magnified schematic diagram of part B;

[0043] Figure 8 It is a structural schematic diagram of a connecting piece provided by the present invention;

[0044] Fig. 9 is a schematic structural diagram of another connecting piece provided by the present invention;

[0045] Fig.10 It is a structural schematic diagram of a carriage provided by the present invention;

[0046] Fig.11 It is a structural schematic diagram of a cloth tightening assembly provided by the present invention;

[0047] Fig.12 It is a structural schematic diagram of another cloth tightening assembly provided by the present invention;

[0048] Fig.13 It is a structural schematic diagram of another truck tarpaulin system provided by the present invention;

[0049] Fig.14 It is a structural schematic diagram of another truck tarpaulin system provided by the present invention;

[0050] Fig.15 The present invention provides Fig.14 Enlarged schematic diagram of part C.

[0051] In the figure:

[0052] 100 tarpaulin frame, 110 first connecting part, 120 stake, 130 horizontal bar, 131 guide member, 140 side bar, 150 tarpaulin tightening assembly, 151 tarpaulin tightening seat, 152 tarpaulin tightening rod, 153 fixing frame, 154 telescopic cylinder, 155 buffer member, 156 elastic member, 157 pull rod, 158 connecting rope, 160 tarpaulin tightening plate, 161 fixing part;

[0053] 200 tarpaulin, 210 second connecting part, 220 main cloth, 230 side cloth;

[0054] 300 cloth rolling rod, 310 pull head, 320 driving member, 330 cloth sealing device, 331 fixing plate, 332 connecting member, 333 pull ring, 334 horizontal section, 335 vertical section, 336 first connecting rod, 337 second connecting rod, 338 third connecting rod;

[0055] 400 tarpaulin cover, 410 cross beam, 420 side beam, 430 flap device, 440 telescopic rod assembly, 450 support net. DETAILED DESCRIPTION

[0056] 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.

[0057] Reference Figure 1-Figure 3 As shown, an embodiment of the present invention provides a truck tarpaulin system, comprising a tarpaulin frame 100, a tarpaulin 200 and a rolling rod 300, wherein the tarpaulin frame 100 has a first connecting portion 110 formed on its outer contour, the tarpaulin 200 is covered on the outer side of the tarpaulin frame 100, and the tarpaulin 200 has a side edge (not marked in the figure) and a bottom edge (not marked in the figure) connected to each other, and the side edge is provided with a second connecting portion 210; the side wall of the rolling rod 300 is connected to the bottom edge of the tarpaulin frame 100, and with the rotation of the rolling rod 300, the tarpaulin 200 can be extended and retracted on the outer side of the rolling rod 300 along the circumference of the rolling rod 300, so that the rolling rod 300 moves along the outer contour of the tarpaulin frame 100. In addition, during the movement of the rolling rod 300 along the outer contour of the tarpaulin frame 100, the first connecting portion 110 cooperates with the second connecting portion 210 to seal the gap between the tarpaulin 200 and the tarpaulin frame 100.

[0058] It should be noted that the truck tarpaulin system provided by the present application can be applied to different types of truck compartments, for example, compartments of a cargo box truck, a flatbed truck, a side curtain truck, a dump truck, and other types of compartments that need to be covered with tarpaulins. In addition, since the sizes, specifications, and structures of different types of truck compartments are more or less different, when installing the truck tarpaulin system on different types of truck compartments, the user can appropriately adjust the sizes and specifications of the tarpaulin frame 100 and other structures in the truck tarpaulin system according to the parameters of different types of truck compartments. The present application does not limit the application models and application scenarios of the truck tarpaulin system, nor the specific sizes and specifications of the truck tarpaulin system.

[0059] It should also be noted that the tarpaulin rack 100 in the present application can be installed on the outside of the carriage alone, or can be used in conjunction with the tarpaulin cover 400 described below and installed together on the outside of the carriage. When the tarpaulin rack 100 is adapted to the carriage alone, illustratively, the tarpaulin rack 100 can include a stake 120, a cross bar 130 and a side bar 140. In this case, the first connecting portion 110 can be formed on the surface of the stake 120 and the cross bar 130, that is, the first connecting portion 110 is arranged along the height direction and width direction of the carriage; the first connecting portion 110 can also be formed only on the surface of the stake 120, that is, the first connecting portion 110 is arranged parallel to the height direction of the carriage.

[0060] When the tarpaulin frame 100 and the tarpaulin cover 400 are adapted to the vehicle compartment together, for example, referring to Figure 4 and Figure 5As shown, the tarpaulin frame 100 may include a stake 120, a horizontal bar 130 and a side bar 140, wherein the horizontal bar 130 and the side bar 140 are connected and enclosed to form a frame structure, the stake 120 is perpendicular to the formed frame, and is fixedly connected to the bottom of the horizontal bar 130 and / or the side bar 140; the tarpaulin cover 400 may include a crossbeam 410 parallel to the horizontal bar 130, and a side bar 420 connected to the crossbeam 410, and the crossbeam 410 and the side bar 420 can also be enclosed to form a frame structure. Since the tarpaulin cover 400 is located above the tarpaulin frame 100, and the tarpaulin cover 400 can be turned over or moved relative to the tarpaulin frame 100, at this time, the first connecting portion 110 can be formed on the surface of the stake 120 and the crossbeam 410, or only on the surface of the stake 120. It is understandable that there are various positions for forming the first connecting portion 110 in the present application, and its specific setting position depends on the user's design requirements and the specific structure of the truck tarpaulin system.

[0061] In addition, the "side edge" of the tarpaulin 200 in the present application refers to the edge of the tarpaulin 200 along the height direction or width direction of the vehicle compartment, and the "bottom edge" refers to the edge of the tarpaulin 200 along the length direction of the vehicle compartment. Accordingly, when the first connecting portion 110 is formed at different positions in the tarpaulin frame 100, the position of the second connecting portion 210 will also be adjusted appropriately. Exemplarily, when the first connecting portion 110 is formed on the surface of the stake 120 and the crossbar 130, the second connecting portion 210 can be formed correspondingly at the side edge of the tarpaulin 200 in the height direction and the width direction; when the first connecting portion 110 is only formed on the surface of the stake 120, the second connecting portion 210 is formed correspondingly at the side edge of the tarpaulin 200 in the height direction.

[0062] In addition, the present application does not limit the connection method between the cloth rolling rod 300 and the bottom edge of the tarpaulin 200. For example, the tarpaulin 200 and the cloth rolling rod 300 can be connected by sleeve connection, bonding, snap connection, etc. The present application does not limit the specific structure of the cloth rolling rod 300. For example, the cross-section of the cloth rolling rod 300 can be circular, square, or any polygon such as a pentagon or hexagon. 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 300. The provision of the heating element enables the cloth rolling rod 300 to 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 improving the service life of the tarpaulin itself.

[0063] Furthermore, a magnetic element may be provided inside the cloth rolling rod 300, and the tarpaulin cover 100 and / or the tarpaulin frame 200 may be provided with a magnetic element, or a part of the tarpaulin cover 400 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 300 moves along the outer contour of the tarpaulin cover 400 and / or the tarpaulin frame 100, the stability of the movement of the cloth rolling rod 300 is ensured, and to a certain extent, the cloth rolling rod 300 can be adsorbed on the surface of the tarpaulin cover 400 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.

[0064] The truck tarpaulin system provided in the present application, on the one hand, can make the tarpaulin 200 more tightly cover the vehicle compartment through the cooperation between the first connecting part 110 and the second connecting part 210, thereby improving the protective effect of the tarpaulin 200 on the goods inside the vehicle compartment; on the other hand, even if the truck is traveling at high speed, the tarpaulin 200 will not be blown away by strong winds, thereby improving the stability and reliability of the equipment and facilitating the smooth transportation of goods; on the other hand, the first connecting part 110 and the second connecting part 210 can cooperate or separate with the movement of the rolling rod 300, thereby realizing automatic sealing of the tarpaulin 200 relative to the tarpaulin frame 100, without the user having to manually take other sealing measures, which is beneficial to the user experience, reduces the burden on the user, and is safer.

[0065] Regarding the specific types of the first connection portion 110 and the second connection portion 210, there may be various different implementations:

[0066] In one embodiment, the first connection portion 110 is a female Velcro patch, and the second connection portion 210 is a male Velcro patch, and the male Velcro patches are bonded to each other.

[0067] In this embodiment, the arrangement of the Velcro female tape and the Velcro male tape makes the coordination between the first connecting part 110 and the second connecting part 210 simpler and faster, and the Velcro female tape and the Velcro male tape can be flexibly arranged on the tarpaulin frame 100 and the tarpaulin 200, which is easier to process and assemble, thereby helping to reduce product costs.

[0068] In another embodiment, the first connecting part 110 may be a first chain belt having a track, and the second connecting part 210 may be a second chain belt having an insertion strip, and the connection between the first connecting part 110 and the second connecting part 210 can be achieved through the cooperation between the insertion strip and the track.

[0069] Compared with the above-mentioned bonding method between the Velcro male patch and the Velcro female patch, the cooperation between the insert strip and the track enables the cooperation between the first chain belt and the second chain belt to form a toothless zipper structure with better air tightness, thereby facilitating the improvement of the sealing performance of the equipment.

[0070] In another embodiment, referring to Figure 3 As shown, the first connecting part 110 is a first chain belt with primary chain teeth, and the second connecting part 210 is a second chain belt with secondary chain teeth. In addition, the truck tarpaulin system also includes a pull head 310, a driving member 320 and a cloth sealing device 330. The pull head 310 is respectively adapted to the primary chain teeth and the secondary chain teeth; the cloth sealing device 330 is respectively connected to the pull head 310 and the driving member 320, and in response to the driving action of the driving member 320, the pull head 310 can be driven by the cloth sealing device 330 to move along the outer contour of the tarpaulin frame 100 to achieve staggered engagement or separation between the primary chain teeth and the secondary chain teeth.

[0071] It should be noted that, in this embodiment, the driving member 320 can be a driving motor, a hydraulic driving member 320, a pneumatic driving member 320, etc., or a handle, a crank, etc., and the present application does not limit the specific type of the driving member 320. Among them, when the driving member 320 is an automatic driving structure such as a driving motor, a hydraulic pump, a pneumatic pump, etc., since the driving motor, the hydraulic pump, the pneumatic pump, etc. are usually fixedly connected to the cloth rolling rod 300, the cloth sealing device 330 can be connected to the pull head 310 and the driving member 320 by the support position provided by the driving member 320; when the driving member 320 is a manual driving structure such as a handle, a crank, etc., since the handle, the crank, etc. are usually detachably connected to the cloth rolling rod 300, the cloth sealing device 330 can be connected to the pull head 310 and the cloth rolling rod 300 respectively. Optionally, the cloth sealing device 330 can be connected to the end of the cloth rolling rod 300 through a ring (not shown in the figure). The setting of the ring can prevent the cloth sealing device 330 from rotating with the rotation of the cloth rolling rod 300, thereby ensuring the stability of the cloth sealing device 330 during the movement process along the outer contour of the tarpaulin frame 100.

[0072] In addition, there can be one or two cloth rolling rods 300, and the present application does not limit the specific number of cloth rolling rods 300. When there are two cloth rolling rods 300 and the driving member 320 adopts an automatic driving structure (such as a driving motor), the two cloth rolling rods 300 can be driven by two driving motors; or, the two cloth rolling rods 300 can also be driven by one driving motor. At this time, the ends of the two cloth rolling rods 300 can be provided with a three-way connector 332, one end of the three-way connector 332 is connected to the end of the cloth rolling rod 300, the other end can be connected to the driving member 320 through a transmission shaft, and the other end can be connected to a manual driving structure (such as a handle, a crank, etc.). Among them, through the setting of the three-way connector 332, when the automatic driving structure fails, the cloth rolling rod 300 can be driven by the manual driving structure, so as to ensure the smooth movement of the cloth rolling rod 300, thereby improving the stability of the truck tarpaulin system.

[0073] In this embodiment, the connection between the first connecting portion 110 and the second connecting portion 210 is more stable and reliable through the cooperation between the main chain teeth in the first chain belt and the auxiliary chain teeth in the second chain belt. In addition, when the driving member 320 drives the cloth rolling rod 300 to move, the driving member 320 can move along with the movement of the cloth rolling rod 300 on the contour of the tarpaulin frame 100, that is, the driving member 320 can also move along the contour of the tarpaulin frame 100. Therefore, by connecting the cloth sealing device 330 with the driving member 320, the cloth sealing device 330 can drive the pull head 310 to move along with the movement of the driving member 320, so that the pull head 310 can pull the first chain belt and the second chain belt together or apart.

[0074] In some embodiments, reference Figure 6 and Figure 7 As shown, the cloth sealing device 330 may include a fixing plate 331 and a connecting member 332, wherein the fixing plate 331 is connected to the slider 310, and the two ends of the connecting member 332 are respectively connected to the fixing plate 331 and the driving member 320. Preferably, there may be two fixing plates 331, one fixing plate 331 is located on the outside of the first chain belt and the second chain belt to be connected to the top of the slider 310, and the other fixing plate 331 is located on the inside of the first chain belt and the second chain belt to be connected to the bottom of the slider 310. The setting of the fixing plate 331 facilitates the reliable and stable connection between the cloth sealing device 330 and the slider 310 on the one hand, and on the other hand, the fixing plate 331 can largely avoid the slider 310 from interfering with the first chain belt and the second chain belt when the slider 310 is pulled together or pulled away from the first chain belt and the second chain belt, thereby facilitating the improvement of the opening and closing effect of the slider 310.

[0075] It should be noted that the connecting member 332 mainly serves to connect the fixing plate 331 and the driving member 320, so as long as the connecting member 332 structure can achieve this connection function, it should be within the protection scope of this application. However, for ease of understanding, the relevant structures of the connecting member 332 will be described in several different embodiments below:

[0076] Implementation Method 1

[0077] Reference Figure 8 As shown, a pull ring 333 is provided on the surface of the fixed plate 331, and the connecting member 332 has a horizontal section 334 and a vertical section 335 connected to each other. The head end of the horizontal section 334 is plugged into the pull ring 333, the tail end of the horizontal section 334 is fixedly connected to the first end of the vertical section 335, and the second end of the vertical section 335 is rotatably connected to the driving member 320.

[0078] Preferably, in this embodiment, the end of the horizontal section 334 may also be provided with an anti-slip portion (not shown in the figure). The anti-slip portion may be an anti-slip pin, an anti-slip protrusion, etc. By providing the anti-slip portion, the stability of the cooperation between the horizontal section 334 and the pull ring 333 can be improved, and the connection member 332 and the pull ring 333 can be prevented from being separated during the movement of the cloth sealing device 330. In addition, in addition to being rotatably connected to the driving member 320, the vertical section 335 may also be directly fixedly connected to the driving member 320; the connection between the horizontal section 334 and the vertical section 335 may be a fixed connection or a rotatable connection, and the present application does not limit the specific connection between the above-mentioned components. In a specific example, an adjusting nut that cooperates with the horizontal section 334 and the vertical section 335 is provided between the horizontal section 334 and the vertical section 335, and the angle between the horizontal section 334 and the vertical section 335 is adjusted by screwing the adjusting nut.

[0079] By setting the pull ring 333, a quick-release connection between the connecting member 332 and the fixed plate 331 can be achieved, which is convenient for users to operate. In addition, by the rotational connection between the vertical section 335 in the connecting member 332 and the driving member 320, the cloth sealing device 330 can better adapt to the movement of the pull head 310 along the first chain belt or the second chain belt. Compared with the fixed setting between the connecting member 332 and the driving member 320, this setting method can greatly reduce the adverse stress that may be generated between the connecting member 332, the fixed plate 331 and the pull head 310, which is conducive to maintaining the structural stability and reliability of the cloth sealing device 330 and the pull head 310.

[0080] Implementation Method 2

[0081] Reference Fig. 9As shown, the connecting member 332 includes a first connecting rod 336, a second connecting rod 337 and a third connecting rod 338, and the two ends of the second connecting rod 337 are respectively connected to one end of the first connecting rod 336 and one end of the third connecting rod 338 for rotation, and the other end of the first connecting rod 336 and the other end of the third connecting rod 338 are respectively connected to the driving member 320 and the fixing plate 331. Further, a shaft sleeve (not marked in the figure) is provided at the top of the driving member 320, and a rotating shaft (not marked in the figure) is provided at the end of the first connecting rod 336, and the rotating shaft cooperates with the shaft sleeve to achieve the rotation connection between the first connecting rod 336 and the driving member 320. Optionally, an adjusting nut (not shown in the figure) respectively connected to the first connecting rod 336 and the driving member 320 can also be provided between the first connecting rod 336 and the driving member 320, and the angle between the first connecting rod 336 and the driving member 320 can be adjusted by screwing the adjusting nut.

[0082] In this second embodiment, the connection between the connecting member 332 and the fixed plate 331 is achieved by setting a multi-link mechanism, and the connection flexibility is better. In addition, in this second embodiment, a pull ring 333 may also be provided on the surface of the fixed plate 331, and the third connecting rod 338 is connected to the fixed plate 331 through the pull ring 333, and the pull ring 333 can rotate relative to the fixed plate 331, so that both ends of the connecting member 332 can rotate relative to the fixed plate 331 and the driving member 320, so as to further improve the connection flexibility among the fixed plate 331, the connecting member 332 and the driving member 320, and greatly reduce the adverse stress that may be generated among the three.

[0083] It is understandable that regarding the specific rotational connection structure or type among the connecting member 332, the fixing plate 331 and the driving member 320, those skilled in the art may adopt a variety of different implementation forms, such as ball joint connection, bearing connection, etc., which will not be elaborated here.

[0084] In some embodiments, continue to refer to Figure 1 As shown, the tarpaulin 200 includes a main tarpaulin 220 and a side tarpaulin 230, the first connecting portion 110 is formed at the side edge of the side tarpaulin 230, and the second connecting portion 210 is formed at the side edge of the main tarpaulin 220; the tarpaulin frame 100 includes a stake 120 and a cross bar 130 connected to the stake 120, and the side tarpaulin 230 is fixed to the surface of the stake 120. The main tarpaulin 220 is used to cover the main body of the vehicle, and the side tarpaulin 230 is used to cover the gap between the main tarpaulin 220 and the tarpaulin frame 100 on the one hand, and can facilitate the fixing of the first connecting portion 110 on the tarpaulin frame 100 or the stake 120 on the other hand.

[0085] It can be understood that the tarpaulin 200 in the present application can also be compounded into a multi-layer structure. For example, it can be a tarpaulin with insulation and heating functions composed of a tarpaulin body, a heating layer and a thermal insulation layer, wherein the heating layer can be a heating wire, a heating rod, etc.; the thermal insulation layer can be thermal insulation cotton, thermal insulation foam, etc. The present application does not limit the specific structure of the tarpaulin 200.

[0086] It should also be noted that the tarpaulin 200 in the present application can be a split structure or an integral structure. When the tarpaulin 200 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 200.

[0087] In addition, in order to improve the fastening effect of the tarpaulin 200 on the tarpaulin frame 100 and prevent the tarpaulin 200 from being blown by strong wind during the driving of the truck, preferably, a tightening member such as a strap, a drawstring, a protective net, etc. can be provided on the outside of the tarpaulin 200, and by tightening the tightening member, the fastening effect of the tarpaulin 200 can be further improved.

[0088] In other embodiments, the tarpaulin frame 100 may further include an auxiliary pile (not shown) arranged in parallel on one side of the pile 120. When the pile 120 adopts a telescopic column structure, as the telescopic column moves, the side cloth 230 arranged on the surface of the pile 120 will also move accordingly, and the side cloth 230 itself cannot undergo large-scale deformation, so the telescopic movement of the pile 120 will cause damage to the side cloth 230, thereby affecting the normal operation of the device. Based on this, the present application arranges the side cloth 230 on the surface of the auxiliary pile and arranges the auxiliary pile as a telescopic structure to avoid damage to the tarpaulin 200 to a certain extent during the extension and retraction of the pile 120.

[0089] Further, refer to Figure 10-12 As shown, the truck tarpaulin system can also include a cloth tightening assembly 150 arranged on the tarpaulin frame 100, the cloth tightening assembly 150 is connected to the edge cloth 230, and has a rotation axis parallel to the height direction and / or width direction of the tarpaulin frame 100; wherein, as the cloth tightening assembly 150 rotates along the rotation axis, the tarpaulin 200 can be tightened along the extension direction of the bottom edge.

[0090] Specifically, in some embodiments, referring to Fig.11 and Fig.12As shown, the cloth tightening assembly 150 may include a cloth tightening seat 151 arranged on the pile 120 and a cloth tightening rod 152 rotatably connected to the cloth tightening seat 151, and the cloth tightening rod 152 is connected to the driving member 320; the cloth tightening seat 151 may include a fixing frame 153 arranged on the pile 120, a telescopic cylinder 154 hinged to the end of the fixing frame 153, and a buffer member 155 respectively abutting the fixing frame 153 and the telescopic cylinder 154, the end of the telescopic cylinder 154 is rotatably connected to the cloth tightening rod 152, and an elastic member 156 and a pull rod 157 are arranged in the telescopic cylinder 154, and the pull rod 157 is connected to the cloth tightening rod 152 through a connecting rope 158.

[0091] As the cloth tightening rod 152 rotates, the pull rod 157 approaches the cloth tightening rod 152 under the action of the connecting rope 158, so that the telescopic cylinder 154 is compressed to the cloth tightening position, and under the elastic action of the buffer 155 and the elastic member 156, the pull rod 157 can be away from the cloth tightening rod 152, and the telescopic cylinder 154 is restored to the normal position. Optionally, the telescopic cylinder 154 can be provided with a strip groove, and the pull rod 157 cooperates with the strip groove, and the pull rod 157 can slide along the strip groove. In addition, the elastic member 156 can abut against the inner wall of the pull rod 157 and the telescopic cylinder 154 respectively.

[0092] Among them, the elastic member 156 and the buffer member 155 can be compression springs, spring sheets, etc., which are not limited in the present application. In addition, the connection between the cloth tightening rod 152 and the edge cloth 230 can be a fixed connection or a detachable connection, which is not limited in the present application. When the cloth tightening rod 152 and the edge cloth 230 are detachably connected, preferably, the surface of the cloth tightening rod 152 can be provided with an adhesive portion (not marked in the figure), and the edge cloth 230 is correspondingly provided with an adhesive portion (not shown in the figure), and the adhesive portion cooperates with the adhesive portion. Optionally, the adhesive portion and the adhesive portion can both be Velcro.

[0093] In order to clearly understand the principle of the cloth tightening assembly 150, its movement process is described below:

[0094] When the side cloth 230 is connected to the cloth tightening rod 152, the cloth tightening rod 152 rotates with the driving of the driving member 320, and the cloth tightening rod 152 can pull the pull rod 157 through the connecting rope 158, so that it can slide along the strip groove, and the elastic member 156 is squeezed by the pull rod 157 and the inner wall of the telescopic cylinder 154 and shrinks. At the same time, the telescopic cylinder 154 can be compressed along its extension direction on the one hand, and on the other hand, the telescopic cylinder 154 can rotate to a certain extent relative to the fixing frame 153, so that the telescopic cylinder 154 is closer to the fixing frame 153. When the telescopic cylinder 154 cannot be compressed and the telescopic cylinder 154 cannot rotate relative to the fixing frame 153, it indicates that the telescopic cylinder 154 has been fully compressed to the cloth tightening position, that is, the tightening action of the side cloth 230, or the side edge of the tarpaulin 200, is completed.

[0095] It is understandable that, since the side cloth 230 may include a portion along the height direction of the tarpaulin frame 100 or a portion along the width direction of the tarpaulin frame 100; accordingly, the cloth tightening assembly 150 connected to the side cloth 230 may be arranged along the height direction of the tarpaulin frame 100 or along the width direction of the tarpaulin frame 100, so that when the first connecting portion 110 cooperates with the second connecting portion 210 and the main cloth 220 and the side cloth 230 are connected as one, the overall tightening of the tarpaulin 200 is achieved. By setting the cloth tightening assembly 150, while improving the tightening and sealing effect of the tarpaulin 200, it is also possible to achieve full coverage of the vehicle compartment by the tarpaulin 200, thereby facilitating the tarpaulin 200 to protect the goods inside the vehicle compartment.

[0096] Furthermore, the end of the cloth tightening assembly 150 may also be provided with a driving member 320 such as a driving motor, an air pump, a hydraulic pump, a handle, or a crank, and the cloth rolling rod 300 is rotated by the driving action of the driving member 320 to tighten the tarpaulin 200. The cross section of the cloth tightening assembly 150 may be square or circular, and the present application does not limit the specific shape of the cloth tightening assembly 150.

[0097] In some embodiments, reference Figure 5 and Fig.13 As shown, the truck tarpaulin system also includes a tarpaulin cover 400 matched with the tarpaulin frame 100, the tarpaulin cover 400 has a crossbeam 410 and a side beam 420 connected to the crossbeam 410, and the side cloth 230 can also be fixed to the surface of the crossbeam 410. When the truck tarpaulin system includes the tarpaulin cover 400, the tarpaulin frame 100 and the tarpaulin cover 400 are matched and installed together on the outside of the vehicle compartment. At this time, by fixing the side cloth 230 on the surface of the crossbeam 410, the main cloth 220 and the side cloth 230 located above the tarpaulin cover 400 can also be sealed, thereby sealing the gap between the tarpaulin 200 and the tarpaulin cover 400.

[0098] Reference Fig.14 and Fig.15 As shown, when tightening the tarpaulin 200, in addition to adopting the structure of the above-mentioned cloth tightening assembly 150, it can also be achieved by providing a cloth tightening plate 160 on the tarpaulin cover 400 and / or the tarpaulin frame 100. Specifically, the cloth tightening plate 160 has a fixing portion 161 connected to the edge cloth 230, and the cloth tightening plate 160 can move relative to the tarpaulin cover 400 and / or the tarpaulin frame 100 to tighten or send the tarpaulin 200.

[0099] The cloth tightening plate 160 can be arranged only at the front end or rear end of the tarpaulin frame 100, or can be arranged at the front end and rear end of the tarpaulin frame 100. The front end of the tarpaulin frame 100 corresponds to the front end of the carriage, and the rear end of the tarpaulin frame 100 corresponds to the rear end of the carriage.

[0100] Furthermore, one end of the cloth tightening plate 160 is rotatably connected to the tarpaulin cover 400 and / or the tarpaulin frame 100, and the other end is provided with a fixing portion 161, and the cloth tightening plate 160 can be turned relative to the tarpaulin cover 400 and / or the tarpaulin frame 100, so that the surface of the fixing portion 161 is parallel or perpendicular to the surface of the tarpaulin cover 400 and / or the tarpaulin frame 100. The cloth tightening plate 160 is connected to the side cloth 230, which increases the connection area between it and the tarpaulin 200, which is conducive to improving the stability of the cloth tightening process of the cloth tightening plate 160.

[0101] In addition, the tarpaulin frame 100 may also include an elastic member (not shown in the figure) arranged on the cross beam 410, and the elastic member is used to support the cloth tightening plate so that the surface of the fixing portion 161 is maintained in a position parallel to the top surface of the tarpaulin frame 100 (especially the top surface of the cross bar 130).

[0102] Since the cloth-tightening plate 160 disposed on the crossbeam 410 can flip between a horizontal state and a vertical state, it is easy to flip downward under the action of its own gravity, and it is difficult to maintain a state parallel to the top surface of the tarpaulin frame 100. Therefore, by providing an elastic member, the elastic member supports the cloth-tightening plate 160 in a horizontal position. When the cloth-tightening plate 160 flips downward, the elastic member is compressed. When the cloth-tightening plate 160 is released, the elastic member releases the elastic force and pushes the cloth-tightening plate 160 to flip upward under the action of the elastic force, so that the surface of the fixing portion 161 is in a horizontal position. The elastic member can be a torsion spring, or a leaf spring, etc.

[0103] In some embodiments, the tarpaulin cover 400 further includes a flap device 430 disposed on the crossbar 410, and the crossbar 130 is provided with a guide 131. The flap device 430 cooperates with the guide 131, so that the tarpaulin cover 400 can move along the crossbar 130 under the drive of the flap device 430, so as to realize the flipping of the tarpaulin cover 400 relative to the tarpaulin frame 100. Among them, the guide 131 can be a chain, and the flap device 430 can include a sprocket (not shown in the figure), and the flap device 430 and the guide 131 are coordinated through the coordination between the sprocket and the chain. Alternatively, the guide 131 can also be a slide rail, and the flap device 430 can include a slider, and the flap device 430 and the guide 131 are coordinated through the coordination between the slide rail and the slider. The specific structure of the guide 131 and the flap device 430 is not limited in this application.

[0104] By setting the flip cover device 430, relative movement between the tarpaulin cover 400 and the tarpaulin frame 100 can be achieved, so that the user can load and unload goods from the top of the tarpaulin frame 100 into the vehicle compartment, which to a certain extent improves the application range of the truck tarpaulin system.

[0105] Further, continue to refer to Figure 5 and Fig.13 As shown, the truck tarpaulin system may further include a telescopic rod assembly 440, one end of which may be connected to the driving member 320 or directly connected to the cloth rolling rod 300, and the other end of which may be connected to the flip cover device 430. The telescopic rod assembly 440 has a plurality of telescopic joints (not marked in the figure) which are connected in sequence, and the plurality of telescopic joints can be extended or contracted as the cloth rolling rod 300 moves along the outer contour of the tarpaulin frame 100.

[0106] Through the setting of the telescopic rod assembly 440, on the one hand, the movement path of the cloth rolling rod 300 can be guided to prevent the movement path of the cloth rolling rod 300 from being offset, thereby ensuring the reliability and stability of the tarpaulin 200 during the deployment and retraction process; on the other hand, when the telescopic rod assembly 440 is connected to the driving member 320, the position of the driving member 320 can also be restricted to avoid the driving member 320 from rotating with the rotation of the cloth rolling rod 300 as much as possible, so as to further improve the safety of the truck tarpaulin system.

[0107] It is understandable that the connection between the telescopic rod assembly 440 and the driving member 320, the cloth rolling rod 300, and the flip cover device 430 can be either a fixed connection or a rotational connection, and the present application has no limitation on this.

[0108] Furthermore, the tarpaulin cover 400 may further include a support net 450, which is disposed in a space enclosed by the cross beam 410 and the side beam 420. The provision of the support net 450 not only enables the tarpaulin cover 400 to have a good supporting effect, but also helps to maintain air circulation between the interior of the vehicle and the external environment.

[0109] It should also be noted that the truck tarpaulin system provided by the present application is mainly used in the field of truck transportation, especially often used in truck compartments. However, it does not completely mean that the technical method provided by the present application cannot be applied in other fields. For example, in scenes such as outdoor awnings and open-air platforms that require tarpaulin covering for shielding, sometimes it is necessary not only to be able to automatically unfold and retract the tarpaulin, but also to ensure the sealing effect of the tarpaulin. At this time, the truck tarpaulin system provided by the present application can completely divert the relevant structure to the relevant scene according to the needs of the user.

[0110] 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.

[0111] 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: include: A tarpaulin frame having a first connecting portion formed on an outer contour thereof; The tarpaulin covering the outer side of the tarpaulin frame has a side edge and a bottom edge connected to each other, and a second connecting portion is provided on the side edge; A cloth rolling rod, whose side wall is connected to the bottom edge, and with the rotation of the cloth rolling rod, the tarpaulin can be expanded and retracted on the outside of the cloth rolling rod along the circumference of the cloth rolling rod, so that the cloth rolling rod moves along the outer contour of the tarpaulin frame; Wherein, when the cloth rolling rod moves along the outer contour of the tarpaulin frame, the first connecting portion cooperates with the second connecting portion to seal the gap between the tarpaulin and the tarpaulin frame.

2. The truck tarpaulin system according to claim 1, characterized in that: The first connecting portion is a female Velcro patch, and the second connecting portion is a male Velcro patch, and the male Velcro patches are bonded to each other.

3. The truck tarpaulin system according to claim 1, characterized in that: The first connecting portion is a first chain belt having primary chain teeth, and the second connecting portion is a second chain belt having secondary chain teeth; The truck tarpaulin system also includes A pull head, adapted to the main chain teeth and the auxiliary chain teeth respectively; A driving member connected to the end of the cloth rolling rod; The cloth closing device is connected to the pull head and the driving member respectively, and in response to the driving action of the driving member, the pull head can move along the outer contour of the tarpaulin frame under the drive of the cloth closing device to achieve staggered engagement or separation between the main chain teeth and the auxiliary chain teeth.

4. The truck tarpaulin system according to claim 3, characterized in that: The cloth sealing device comprises: A fixing plate connected to the slider; A connecting member, two ends of which are respectively connected to the fixing plate and the driving member.

5. The truck tarpaulin system according to claim 4, characterized in that: A pull ring is provided on the surface of the fixing plate; The connecting member has a horizontal section and a vertical section connected to each other, the head end of the horizontal section is plug-fitted with the pull ring, the tail end of the horizontal section is fixedly connected to the first end of the vertical section, and the second end of the vertical section is rotationally connected to the driving member.

6. The truck tarpaulin system according to claim 4, characterized in that: The connecting member includes: a first connecting rod, a second connecting rod and a third connecting rod, the two ends of the second connecting rod are respectively rotatably connected to one end of the first connecting rod and one end of the third connecting rod, and the other end of the first connecting rod and the other end of the third connecting rod are respectively connected to the driving member and the fixing plate.

7. The truck tarpaulin system according to claim 6, characterized in that: A shaft sleeve is arranged on the top of the driving member, and a rotating shaft is arranged on the end of the first connecting rod. The rotating shaft cooperates with the shaft sleeve to realize the rotation connection between the first connecting rod and the driving member.

8. The truck tarpaulin system according to claim 1, characterized in that: The tarpaulin comprises a main cloth and a side cloth, the first connecting portion is formed at a side edge of the side cloth, and the second connecting portion is formed at a side edge of the main cloth; The tarpaulin frame comprises a stake and a horizontal bar connected to the stake, and the side cloth is fixed to the surface of the stake.

9. The truck tarpaulin system according to claim 8, characterized in that: The truck tarpaulin system also includes: A cloth tightening assembly disposed on the tarpaulin frame, connected to the edge cloth, and having a rotation axis parallel to the height direction and / or width direction of the tarpaulin frame; Wherein, as the cloth tightening assembly rotates along the rotation axis, the tarpaulin can be tightened along the extension direction of the bottom edge.

10. The truck tarpaulin system according to claim 8, characterized in that: The truck tarpaulin system also includes: A tarpaulin cover matched with the tarpaulin frame comprises a crossbeam and a side beam connected to the crossbeam, and a flap device arranged on the crossbeam; The cross bar is provided with a guide, and the flip device cooperates with the guide, so that the tarpaulin cover can move along the cross bar driven by the flip device to realize the flipping of the tarpaulin cover relative to the tarpaulin frame.

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