Truck carriage and truck tarpaulin system

Abstract

The invention provides a truck carriage and a truck tarpaulin system. 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. The tarpaulin frame is provided with a guide groove and a pair of guide pieces arranged in parallel; the crawling device comprises a crawling seat fixed on the tarpaulin cover; the transmission shaft is arranged along the center line of the crawling seat; the pair of transmission pieces are coaxially arranged on the outer side of the transmission shaft and correspond to the pair of guide pieces respectively; the upper part of the connecting plate is rotationally connected with the transmission shaft, and the lower part is provided with a roller corresponding to the guide groove; wherein relative movement between the tarpaulin cover and the tarpaulin frame is achieved through cooperation between the roller and the guide groove and cooperation between the pair of guide pieces and the pair of transmission pieces. Through cooperation of the two guide pieces and the two transmission pieces, the stability and reliability of the transmission structure in the crawling device can be improved, abrasion of the transmission structure is greatly reduced, and improvement of the equipment transmission precision is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation equipment, and in particular to a truck compartment and 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, the Chinese invention patent with application number CN202010638561.X discloses a compartment tarpaulin cover collection device to realize the automatic cover collection of truck tarpaulins. Specifically, in the invention patent, a chain is provided on the support rod of the support frame, and a sprocket is provided in the crossbeam of the tarpaulin cover. Through the cooperation of the sprocket and the chain, the tarpaulin cover can move along the support rod. However, in the tarpaulin cover collection device of this structure, when the tarpaulin cover switches from a horizontal state to a vertical state, due to the vertical connection between the horizontal rod and the lifting rod below it, the tarpaulin cover will directly impact the lifting rod when it moves to the connection between the support rod and the lifting rod. In addition, 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 lifting rod is also greater. This huge impact will not only cause a huge noise to be generated during the flipping process, but also is not conducive to maintaining the stability of the lifting rod, tarpaulin cover and other structures, resulting in a large shake between the tarpaulin cover and the support frame, and may also bring certain safety hazards.

[0004] In addition, the sprocket and chain in the above-mentioned tarpaulin cover collecting device serve as transmission components, which can be used to drive the movement of the tarpaulin cover relative to the support frame. However, since there is only one sprocket and chain in the single-side beam of the equipment, or it is called single-chain transmission, this transmission method is subject to certain limitations in terms of transmission stability and transmission accuracy. Especially after the equipment has been working for a long time, the wear between the chain and the sprocket will greatly affect the reliability of the single-chain transmission structure. In addition, in the opening method of the tarpaulin cover collecting device, the tarpaulin cover is flipped relative to the support frame, thereby realizing the full opening of the device. However, in some cargo loading and unloading scenarios that do not require full opening, or in scenarios with narrow space, the full opening method may not be well adapted to such scenarios, thereby limiting the applicability of the equipment to a certain extent.

[0005] This shows that the prior art needs to be further improved and enhanced. Summary of the Invention

[0006] In view of the above problems, the present invention provides a freight car carriage and a freight car tarpaulin system to solve the problems that in the existing tarpaulin covering and retracting equipment, the single-chain drive structure has poor transmission stability, transmission accuracy and reliability after long-term operation, and the application scenarios of the equipment are limited.

[0007] The present invention provides a freight car carriage, including a carriage body and a freight car tarpaulin system arranged on the carriage body. The freight car tarpaulin system includes a tarpaulin frame, a tarpaulin cover matching the tarpaulin frame, and a crawling device arranged on the tarpaulin cover;

[0008] The tarpaulin frame has a guide groove and a pair of guiding members arranged in parallel;

[0009] The crawling device includes

[0010] a crawling seat fixed to the tarpaulin cover;

[0011] a transmission shaft arranged along the center line of the crawling seat;

[0012] a pair of transmission members coaxially arranged outside the transmission shaft, and the pair of transmission members respectively correspond to the pair of guiding members;

[0013] a connecting plate, the upper part of which is rotatably connected to the transmission shaft, and the lower part is provided with a roller corresponding to the guide groove;

[0014] Wherein, through the cooperation between the roller and the guide groove, and the cooperation between the pair of guiding members and the pair of transmission members, the relative movement between the tarpaulin cover and the tarpaulin frame is realized.

[0015] In some embodiments, the tarpaulin frame includes a cross bar and a vertical post connected to the cross bar;

[0016] The pair of guiding members are spaced apart on both sides of the top surface of the cross bar. The guide groove penetrates the top surface of the cross bar and is formed inside the cross bar, and the guide groove is located between the pair of guiding members.

[0017] In some embodiments, the tarpaulin frame includes a cross bar and a vertical post connected to the cross bar. Support portions are formed by extending the two side walls of the cross bar outward;

[0018] The pair of guiding members are respectively arranged on the support portions. The guide groove penetrates the top surface of the cross bar and is formed inside the cross bar, and the guide groove is located between the pair of guiding members.

[0019] In some embodiments, the crawling device further includes a pair of guide rollers rotatably connected to the crawling seat, and the pair of guide rollers are located on both sides of the transmission member.

[0020] In some embodiments, a gap is formed between the pair of guide rollers, and the gap is used to limit the rotation radius of the connecting plate relative to the transmission shaft.

[0021] In some embodiments, the tarpaulin cover includes a pair of side beams perpendicular to the crossbar, and a folding device connected to the pair of side beams respectively, and the crawling device is arranged at the end of the side beams;

[0022] Driven by the folding device and the crawling device, a pair of side beams can move toward or away from each other along the extension direction of the cross bar to realize the opening and closing of the top of the tarpaulin cover.

[0023] In some embodiments, the folding device includes a first folding arm and a second folding arm that are hinged to each other, and a first driving member that is transmission-connected to the first folding arm and the second folding arm respectively;

[0024] A pair of side beams are each provided with a slide groove, and the end of the first folding arm and the end of the second folding arm are respectively matched with the slide groove;

[0025] Driven by the first driving member, the first folding arm and the second folding arm move along the slide groove respectively, so as to make the two move closer to or separate from each other, and realize the movement of a pair of side beams toward or away from each other.

[0026] In some embodiments, the folding device includes a first folding arm and a second folding arm that are hinged to each other, and a connecting rod assembly that is slidably connected to the first folding arm and the second folding arm respectively;

[0027] A pair of side beams are each provided with a slide groove, and the end of the first folding arm and the end of the second folding arm are respectively matched with the slide groove;

[0028] The crawling device also includes a second driving member connected to the first end of the transmission shaft, and the second end of the transmission shaft is connected to the connecting rod assembly. Under the drive of the second driving member and the transmission of the connecting rod assembly, the first folding arm and the second folding arm move along the slide groove respectively to make the two closer or separated, and realize the toward or away movement of a pair of side beams.

[0029] In some embodiments, the connecting rod assembly includes a first connecting rod and a second connecting rod that are hinged to each other, and a telescopic rod connected to the hinge of the first connecting rod and the second connecting rod;

[0030] Among them, the first folding arm is provided with a first track groove, and the end of the first connecting rod is slidably matched with the first track groove. The second folding arm is provided with a second track groove, and the end of the second connecting rod is slidably matched with the second track groove. The telescopic rod is universally connected to the second end of the transmission shaft and can be telescoped and extended with the rotation of the transmission shaft.

[0031] In addition, the present invention also provides a truck tarpaulin system, which is applied to the truck compartment as above, and the truck tarpaulin system includes a tarpaulin frame and a tarpaulin cover matching the tarpaulin frame, and a crawling device arranged on the tarpaulin cover;

[0032] The tarpaulin frame has a guide groove and a pair of guide members arranged in parallel;

[0033] The crawling device includes

[0034] a crawling seat fixed to the tarpaulin cover;

[0035] a transmission shaft arranged along the center line of the crawling seat;

[0036] a pair of transmission parts coaxially arranged outside the transmission shaft, and the pair of transmission parts respectively correspond to a pair of guiding parts;

[0037] a connecting plate, the upper part of which is rotatably connected to the transmission shaft, and the lower part is provided with rollers corresponding to the guiding grooves;

[0038] Wherein, through the cooperation between the rollers and the guiding grooves, and the cooperation between the pair of guiding parts and the pair of transmission parts, the relative movement between the tarpaulin cover and the tarpaulin frame is realized.

[0039] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows:

[0040] The truck carriage provided by the present invention includes a carriage body and a truck tarpaulin system arranged on the carriage body, and the truck tarpaulin system includes a tarpaulin frame, a tarpaulin cover and a crawling device. Among them, the tarpaulin frame has guiding parts and guiding grooves, and the crawling device includes a crawling seat, a transmission shaft, transmission parts and a connecting plate. Specifically, through the cooperation between the rollers and the guiding grooves, and the guiding parts and the transmission parts, the tarpaulin cover can move along the contour of the tarpaulin frame driven by the crawling device. First, when the rollers cooperate with the guiding grooves, the surface of the rollers contacts the inner wall of the guiding grooves, which can make the flipping process of the tarpaulin cover smoother when the tarpaulin cover switches from the horizontal state to the vertical state, thereby reducing the impact of the tarpaulin cover on the tarpaulin frame, and avoiding the shaking of the equipment caused by excessive impact to the greatest extent, and then facilitating to ensure the stability of structures such as the tarpaulin cover and the tarpaulin frame, and greatly eliminating potential safety hazards that may occur in the equipment. Second, by configuring the guiding parts in the tarpaulin frame as two juxtaposed ones, and through the cooperation between the two guiding parts and the two transmission parts, not only can the stability and reliability of the transmission structure in the crawling device be improved, but also it is beneficial to expand the maximum load of the transmission structure; and after the equipment works for a long time, this setting method can greatly reduce the wear of the transmission structure, thereby facilitating the improvement of the transmission accuracy of the equipment.

[0041] In addition, the truck tarpaulin system provided by the present invention, when applied to the above-mentioned truck carriage, can bring great convenience to the loading and unloading process of users and is beneficial to the user experience.

[0042] The above description is only an overview of the technical solution of the embodiment of the present invention. In order to be able to understand the technical means of the embodiment of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiment of the present invention more obvious and understandable, the following specifically gives the specific implementation manners of the present invention. Brief Description of the Drawings

[0043] The accompanying drawings are only used to illustrate the embodiments and are not considered as a limitation to the present invention. Moreover, throughout the accompanying drawings, the same reference signs are used to denote the same components. In the accompanying drawings:

[0044] Figure 1 is a schematic structural view of a truck tarpaulin system provided by the present invention;

[0045] Figure 2 is a schematic structural view of a tarpaulin rack provided by the present invention;

[0046] Figure 3 is a top view of a tarpaulin rack provided by the present invention;

[0047] Figure 4 is provided by the present invention Figure 3 a cross-sectional view taken along line A-A in;

[0048] Figure 5 is a schematic structural view of a crawling device provided by the present invention;

[0049] Figure 6 is a top view of a crawling device provided by the present invention;

[0050] Figure 7 is provided by the present invention Figure 6 a cross-sectional view taken along line B-B in;

[0051] Figure 8 is a schematic structural view of a cross bar provided by the present invention;

[0052] Figure 9 is a schematic structural view of another truck tarpaulin system provided by the present invention;

[0053] Figure 10 is a top view of a truck tarpaulin system provided by the present invention;

[0054] Figure 11 is a schematic structural view of a tarpaulin cover provided by the present invention;

[0055] Figure 12 is a schematic structural view of another tarpaulin cover provided by the present invention;

[0056] Figure 13 is a schematic structural view of yet another tarpaulin cover provided by the present invention;

[0057] Figure 14 is a top view of a tarpaulin cover provided by the present invention;

[0058] Figure 15 is a schematic structural view of a folding device provided by the present invention;

[0059] Figure 16 is a schematic structural view of another folding device provided by the present invention;

[0060] Figure 17 is a schematic structural view of a link assembly provided by the present invention;

[0061] Figure 18 is a top view of another tarpaulin cover provided by the present invention;

[0062] Figure 19 is a schematic structural view of another cross bar provided by the present invention.

[0063] In the figure:

[0064] 100 tarpaulin frame, 110 guide groove, 120 guide member, 130 cross bar, 131 support portion, 140 stake, 150 tensioner, 151 connecting sleeve, 152 fixed seat, 153 adjusting screw;

[0065] 200 tarpaulin cover, 210 cross beam, 220 side beam, 221 sliding groove, 230 folding device, 231 first folding arm, 232 second folding arm, 233 first driving member, 234 first slider, 235 second slider, 240 link assembly, 241 first link, 242 second link, 243 telescopic rod, 244 first track groove, 245 second track groove, 246 first guide block, 247 second guide block, 250 synchronizing shaft;

[0066] 300 crawling device, 310 crawling seat, 320 transmission shaft, 330 transmission member, 340 connecting plate, 341 roller, 350 guide roller, 360 second driving member. Detailed implementation manners

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

[0068] Refer to Figures 1 - 7As shown in the figure, an embodiment of the present invention provides a freight car compartment, which includes a compartment body (not shown in the figure) and a freight car tarpaulin system arranged on the compartment body. The freight car tarpaulin system includes a tarpaulin frame 100, a tarpaulin cover 200 matching the tarpaulin frame 100, and a crawling device 300 arranged on the tarpaulin cover 200. Among them, the tarpaulin frame 100 has a guiding groove 110 and a pair of guiding members 120 arranged in parallel; the crawling device 300 includes a crawling seat 310, a transmission shaft 320, a pair of transmission members 330 and a connecting plate 340. The crawling seat 310 is fixed to the tarpaulin cover 200. The transmission shaft 320 is arranged along the center line of the crawling seat 310. A pair of transmission members 330 are coaxially arranged outside the transmission shaft 320, and a pair of transmission members 330 respectively correspond to a pair of guiding members 120. The upper part of the connecting plate 340 is rotatably connected to the transmission shaft 320, and the lower part is provided with a roller 341 corresponding to the guiding groove 110. Moreover, through the cooperation between the roller 341 and the guiding groove 110, and the cooperation between a pair of guiding members 120 and a pair of transmission members 330, the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 is realized.

[0069] It should be noted that the freight car tarpaulin system provided in this application can be applied to different types of freight car compartments. For example, it can be applied to freight car compartments such as bulkhead vans, drop-side vans, flatbed vans, side curtain vans, dump trucks and other types of compartments that require tarpaulin coverage. Moreover, since there are more or less differences in the sizes, specifications and structures of different types of freight car compartments, when the user installs the freight car tarpaulin system on different types of freight car compartments, the sizes and specifications of structures such as the tarpaulin frame 100 in the freight car tarpaulin system can be appropriately adjusted according to the parameters of different types of freight car compartments. This application does not limit the application models and application scenarios of the freight car tarpaulin system, nor does it limit the specific sizes and specifications of the freight car tarpaulin system.

[0070] It should also be noted that although the tarpaulin rack 100 in this application is matched with the tarpaulin cover 200, it does not mean that the structure of the tarpaulin rack 100 is unique. For example, the tarpaulin rack 100 may only include the cross bar 130, and the cross bar 130 may be fixedly arranged on the fence of the van body of the bulkhead truck; or, the tarpaulin rack 100 may include the connected cross bar 130 and side bars (not shown in the figure), and both the cross bar 130 and the side bars may be fixedly arranged on the fence of the van body of the bulkhead truck; for the two structures of the tarpaulin rack 100 in the above examples, since the cross bar 130 and / or the side bars are mainly fixed by relying on structures such as the fence of the vehicle body, this type of tarpaulin rack 100 is more suitable for the van body of the bulkhead truck, the side curtain truck body, etc.; or, the tarpaulin rack 100 may include the connected cross bar 130 and side bars, and the upright posts 140 connected to the bottom end of the cross bar 130; since the tarpaulin rack 100 with this structure can be directly fixed relative to the vehicle body through the connection of the upright posts 140, it can be applicable to more types of truck bodies, such as the flatbed truck body, the panel truck body, the dump truck body, etc., and the specific structure of the tarpaulin rack 100 in this application is not limited. Correspondingly, the structure of the tarpaulin cover 200 can also be various. For example, the tarpaulin cover 200 may include the cross beam 210 parallel to the cross bar 130, and the side beam 220 connected to the cross beam 210, and the cross beam 210 and the side beam 220 can enclose to form a closed frame structure; or, the tarpaulin cover 200 may include the cross beam 210, the side beam 220 connected to the cross beam 210 and enclosing to form a frame structure, and the support beam (not shown in the figure) connected to the side beam 220 and located between the two cross beams 210.

[0071] In addition, the crawling device 300 in this application mainly plays a certain driving role on the tarpaulin cover 200, so that the tarpaulin cover 200 can move along the contour of the tarpaulin rack 100. In view of the fact that the structures of the tarpaulin cover 200 and the tarpaulin rack 100 in this application can be various, the configuration quantity and setting mode of the crawling device 300 can also be various. For example, when the tarpaulin cover 200 includes two cross beams 210 respectively arranged at its front end and rear end, and the tarpaulin rack 100 includes two cross bars 130 respectively corresponding to the two cross beams 210, the crawling device 300 can be one, and this one crawling device 300 can be correspondingly arranged on any one of the two cross beams 210; or, the crawling device 300 can be two, and the two crawling devices 300 can be respectively arranged corresponding to the two cross beams 210, and the configuration quantity and setting mode of the crawling device 300 in this application are not limited.

[0072] There can be various different implementation manners for the specific structure of the roller 341, and this application does not limit it. For example, when the groove wall of the guiding groove 110 is a plane, the roller 341 can be a cylindrical roller; or when the groove wall of the guiding groove 110 is an arc surface, the roller 341 can be an arc roller; when the groove wall of the guiding groove 110 is a wedge surface, the roller 341 can be a wedge roller; when the groove wall of the guiding groove 110 is a V-shaped surface, the roller 341 can be an inverted V-shaped roller

[0073] It can be understood that, as a component in direct contact with the groove wall of the guiding groove 110, the roller 341 can play a certain guiding role for the tarpaulin cover 200 during the movement of the tarpaulin cover 200 relative to the tarpaulin frame 100. In order to effectively reduce the friction between the tarpaulin cover 200 and the tarpaulin frame 100 during the movement of the tarpaulin cover 200, make the relative movement process of the two smoother, and reduce the noise generated during the relative movement of the two. This application can reduce the friction between the tarpaulin cover 200 and the tarpaulin frame 100 by setting a lubricating layer on the surfaces of structures such as the roller 341, the groove wall of the guiding groove 110, the cross bar 130 of the tarpaulin frame 100 or the cross beam 210 of the tarpaulin cover 200. Among them, the lubricating layer can be formed by lubricating oil, grease, etc. coated on the surfaces of the above-mentioned structures, or can be formed by materials with low friction coefficients such as polytetrafluoroethylene, silicone rubber, stone mill, and Teflon used in the above-mentioned structures themselves, or can also be formed by low-friction fabrics, films, etc. sleeved on the surfaces of the above-mentioned structures. This application does not limit this

[0074] In addition, this application realizes the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 through the cooperation between the transmission member 330 and the guiding member 120. Among them, the cooperation manner between the transmission member 330 and the guiding member 120 can be at least one of various different implementation manners such as sprocket-chain cooperation, gear-rack cooperation, lead screw-nut cooperation, pulley-belt cooperation, etc. This application does not limit the specific cooperation manner between the transmission member 330 and the guiding member 120. And since the number of both the transmission member 330 and the guiding member 120 is two, the two transmission members 330 and the two guiding members 120 respectively cooperate to form two sets of transmission mechanisms. Among them, the first set of transmission mechanisms can adopt one of the above-mentioned transmission manners, and the second set of transmission mechanisms can be the same as or different from the transmission manner of the first set of transmission mechanisms. This application also does not limit this

[0075] The tarpaulin system provided by the present invention can enable the tarpaulin cover 200 to move along the contour of the tarpaulin rack 100 driven by the crawling device 300 through the cooperation between the roller 341 and the guide groove 110, and between the guiding member 120 and the transmission member 330. First, when the roller 341 cooperates with the guide groove 110, the surface of the roller 341 contacts the inner wall of the guide groove 110, which can make the flipping process of the tarpaulin cover 200 smoother when the tarpaulin cover 200 switches from the horizontal state to the vertical state, thereby reducing the impact of the tarpaulin cover 200 on the tarpaulin rack 100, and avoiding the shaking of the equipment caused by excessive impact to the greatest extent, and then facilitating to ensure the stability of the structures such as the tarpaulin cover 200 and the tarpaulin rack 100, and greatly eliminating potential safety hazards that may occur in the equipment. Secondly, by configuring the guiding members 120 in the tarpaulin rack 100 into two juxtaposed ones, and through the cooperation between the two guiding members 120 and the two transmission members 330, not only can the stability and reliability of the transmission mechanism in the crawling device 300 be improved, but also it is beneficial to expand the maximum load of the transmission mechanism; moreover, after the equipment works for a long time, this setting method can greatly reduce the wear of the transmission mechanism, thereby facilitating the improvement of the transmission accuracy of the equipment.

[0076] Regarding the setting method of the two guiding members 120 in the tarpaulin rack 100, the present application will be described by the following two different examples:

[0077] Example 1

[0078] Referring to Figures 2 - 4 As shown, the tarpaulin rack 100 includes a cross bar 130 and a vertical post 140 connected to the cross bar 130. A pair of guiding members 120 are arranged at intervals on both sides of the top surface of the cross bar 130. The guide groove 110 penetrates the top surface of the cross bar 130 and is formed inside the cross bar 130, and the guide groove 110 is located between the pair of guiding members 120. In this example, setting the guiding member 120 on the top surface of the cross bar 130 can, to a certain extent, facilitate the optimization of the layout of the various components arranged on the cross bar 130, and is beneficial to the miniaturization of the equipment volume.

[0079] Example 2

[0080] Referring to Figure 8 As shown, the tarpaulin rack 100 includes a cross bar 130 and a vertical post 140 connected to the cross bar 130. Support portions 131 are formed by extending the two side walls of the cross bar 130 outwards; a pair of guiding members 120 are respectively arranged on the support portions 131. The guide groove 110 penetrates the top surface of the cross bar 130 and is formed inside the cross bar 130, and the guide groove 110 is located between the pair of guiding members 120. Among them, the support portion 131 can be a support plate, a support tube, etc., and the present application does not limit the structure of the support portion 131. In this example, through the setting of the support portion 131, the support effect on the guiding member 120 can be improved, thereby facilitating the improvement of the stability of the transmission mechanism.

[0081] In some embodiments, referring to Figure 5 as shown, the crawling device 300 may further include a pair of guide rollers 350 rotatably connected to the crawling base 310, and the pair of guide rollers 350 are located on both sides of the transmission member 330. Optionally, the two guide rollers 350 may be respectively located on the left and right sides of the transmission member 330 in the horizontal direction; alternatively, the two guide rollers 350 may also be respectively located on the upper and lower sides of the transmission member 330 in the vertical direction.

[0082] Among them, the guide roller 350 can not only play a certain guiding role during the movement of the tarpaulin cover 200 relative to the tarpaulin frame 100, so that the tarpaulin cover 200 can move more precisely along the contour of the cross bar 130; and, when the two guide rollers 350 are arranged in the horizontal direction, the two guide rollers 350 can contact the guide member 120 or the top surface of the cross bar 130 during the flipping process of the tarpaulin cover 200; when the two guide rollers 350 are arranged in the vertical direction, at least one of the two guide rollers 350 can contact the bottom surface or the top surface of the cross bar 130 during the flipping process of the tarpaulin cover 200, so that the flipping process of the tarpaulin cover 200 is smoother, so as to further reduce the impact that the tarpaulin cover 200 may exert on the tarpaulin frame 100. It can be understood that the structure of the guide roller 350 may be the same as or different from the structure of the roller 341, and the present application does not limit this.

[0083] Furthermore, a gap (not marked in the figure) is formed between the pair of guide rollers 350, and the gap is used to limit the rotation radius of the connecting plate 340 relative to the transmission shaft 320.

[0084] Since the upper and lower parts of the connecting plate 340 are respectively connected to the transmission shaft 320 and the roller 341, the frictional force generated between the roller 341 and the guide groove 110 and the driving force generated by the transmission member 330 on the guide member 120 are in opposite directions. During the movement of the tarpaulin cover 200 along the contour of the tarpaulin frame 100, this connection structure is likely to cause the connecting plate 340 to deflect to a certain extent relative to the crawling base 310. At this time, if the self-deflection of the connecting plate 340 is not restricted by the guide roller 350, it is very likely that interference will occur between the roller 341 and the guide groove 110, thereby hindering the normal operation of the crawling device 300, and further causing the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 to fail.

[0085] In view of this, the present application limits the rotation radius of the connecting plate 340 relative to the transmission shaft 320 through the gap formed between the pair of guide rollers 350, so as to ensure the stable operation of the crawling device 300, and further realize the stability of the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100. Among them, the specific size of the gap between the two guide rollers 350 can be reasonably set according to the size of the connecting plate 340, and the present application does not limit this.

[0086] In some scenarios where it is not necessary to fully open the top of the carriage, or in some scenarios with relatively narrow spaces, implementing the full opening of the truck tarpaulin system through the above-mentioned crawling device 300 may very likely be restricted by the cargo loading and unloading space and thus unable to be achieved. Based on this, in this application, a folding device 230 is provided on the tarpaulin cover 200, enabling the tarpaulin cover 200 itself to open and close, so that in addition to the full opening method, the truck tarpaulin system also has a semi-opening method, further expanding the applicability of the device and enabling it to be applicable to various complex loading and unloading scenarios.

[0087] Specifically, referring to Figures 9 - 12 As shown, the tarpaulin cover 200 includes a pair of side beams 220 perpendicular to the cross bar 130, and folding devices 230 respectively connected to the pair of side beams 220, and the crawling device 300 is arranged at the end of the side beam 220. Driven by the folding device 230 and the crawling device 300, the pair of side beams 220 can move towards or away from each other along the extension direction of the cross bar 130 to achieve the opening and closing of the top of the tarpaulin cover 200.

[0088] Among them, in this embodiment, there can be one crawling device 300, which is arranged at one end of one side beam 220, and only a transmission member 330 (such as a sprocket, etc.) adapted to the guiding member 120 (such as a chain, etc.) may be arranged at the other end of this side beam 220, and only transmission members 330 may be respectively arranged at both ends of the other side beam 220; in addition, there can also be two crawling devices 300, which can be respectively arranged at one ends of the pair of side beams 220 on the same side, and only transmission members 330 may be respectively arranged at the other ends of the pair of side beams 220; or, there can also be four crawling devices 300, which can be respectively arranged at both ends of the pair of side beams 220.

[0089] It should be noted that although the specific structure of the tarpaulin cover 200 is not limited in this application, in order to achieve the opening and closing of the top of the tarpaulin cover 200 itself, in the above specific embodiments, by canceling the setting of the cross beam 210 or the support beam in the tarpaulin cover 200, the two side beams 220 of the tarpaulin cover 200 can move relatively. In addition, in another embodiment, referring to Figures 13 - 14 As shown, the tarpaulin cover 200 may include a pair of cross beams 210 and a pair of side beams 220 connected to the pair of cross beams 210. By arranging sliding rails (not shown in the figure) on the pair of cross beams 210, the pair of side beams 220 are respectively matched with the sliding rails to achieve the sliding connection between the pair of cross beams 210 and the pair of side beams 220, thereby also being able to achieve the relative movement of the two side beams 220 of the tarpaulin cover 200.

[0090] Through the special setting of the folding device 230 and the above-mentioned tarpaulin cover 200 structure, the present application can make the two side beams 220 of the tarpaulin cover 200 move relative to each other under the drive of the folding device 230 and the crawling device 300, thereby realizing the top opening and closing of the tarpaulin cover 200, thereby expanding the opening method of the device and allowing the device to adapt to different scenarios.

[0091] In addition, there may be a variety of different implementation forms for the specific driving mode of the two side beams 220, specifically:

[0092] In the first implementation, refer to Figure 15 As shown, the folding device 230 includes a first folding arm 231 and a second folding arm 232 which are hinged to each other, and a first driving member 233 which is respectively connected to the first folding arm 231 and the second folding arm 232 in a transmission manner; a pair of side beams 220 are both provided with a slide groove 221, and the end of the first folding arm 231 and the end of the second folding arm 232 are respectively matched with the slide groove 221; under the drive of the first driving member 233, the first folding arm 231 and the second folding arm 232 move along the slide groove 221 respectively, so as to make the two of them approach or separate, and realize the pair of side beams 220 to move toward or away from each other.

[0093] In this implementation, the first driving member 233 can be a driving motor, a hydraulic cylinder, a pneumatic cylinder, etc., and the transmission connection method between the first driving member 233 and the first folding arm 231 and the second folding arm 232 can be gear transmission, chain transmission, belt transmission, etc., and this application does not limit this.

[0094] Preferably, the end of the first folding arm 231 and the end of the second folding arm 232 are respectively provided with a first slider 234 and a second slider 235. Through the cooperation between the first slider 234, the second slider 235 and the slide groove 221, a sliding connection between the first folding arm 231, the second folding arm 232 and the side beam 220 can be achieved.

[0095] In the second implementation, refer to Figures 9 - 13 As shown, the folding device 230 includes a first folding arm 231 and a second folding arm 232 which are hinged to each other, and a connecting rod assembly 240 which is slidably connected to the first folding arm 231 and the second folding arm 232 respectively; a pair of side beams 220 are both provided with a sliding groove 221, and the end of the first folding arm 231 and the end of the second folding arm 232 are respectively matched with the sliding groove 221.

[0096] Reference Figure 5 and Figure 11As shown, the crawling device 300 further includes a second driving member 360 connected to the first end of the transmission shaft 320. The second end of the transmission shaft 320 is connected to the link assembly 240. Under the drive of the second driving member 360 and the transmission of the link assembly 240, the first folding arm 231 and the second folding arm 232 respectively move along the sliding grooves 221, so that the two approach or separate from each other, and the opposite movement or the separation movement of a pair of side beams 220 is realized.

[0097] In this implementation manner, the second driving member 360 can be a driving motor, a hydraulic pump, a pneumatic pump, etc. And, referring to Figure 14 and Figure 16 As shown, the link assembly 240 may include a first link 241 and a second link 242 that are hinged to each other, and a telescopic rod 243 connected to the hinged portion of the first link 241 and the second link 242. Among them, the first folding arm 231 is provided with a first track groove 244, and the end of the first link 241 is slidably matched with the first track groove 244. The second folding arm 232 is provided with a second track groove 245, and the end of the second link 242 is slidably matched with the second track groove 245. The telescopic rod 243 is universally connected to the second end of the transmission shaft 320 and can be telescoped as the transmission shaft 320 rotates.

[0098] It should be noted that the universal connection between the telescopic rod 243 and the transmission shaft 320 can, to a certain extent, avoid the problem of unsmooth transmission when the rotation axes of the two are inconsistent, thus facilitating the stable exertion of the transmission effect of the link assembly 240. Exemplarily, the telescopic rod 243 and the transmission shaft 320 can be connected through a universal ball or through a universal joint. The present application does not limit the specific structure of the universal connection between the two.

[0099] Optionally, referring to Figure 17 As shown, first guide blocks 246 and second guide blocks 247 are respectively arranged at the ends of the first link 241 and the second link 242. Through the cooperation between the first guide block 246 and the first track groove 244, and the second guide block 247 and the second track groove 245, the sliding connection between the first link 241 and the first folding arm 231, and the second link 242 and the second folding arm 232 can be realized.

[0100] Furthermore, the telescopic rod 243 may include a screw rod and a sleeve that cooperates with the screw rod. The sleeve is internally provided with internal threads. Through the screw thread fit between the external threads on the screw rod and the internal threads in the sleeve, the axial movement of the screw rod relative to the sleeve can be realized, that is, the telescopic movement of the telescopic rod 243 is realized.

[0101] During specific operation, first, the second driving member 360 drives the transmission shaft 320 to rotate. Since the second end of the transmission shaft 320 is connected to the link assembly 240, that is, to the spiral support rod, the spiral support rod rotates with the rotation of the transmission shaft 320, enabling the sleeve to move relative to the spiral support rod, and further driving the first link 241 and the second link 242 to rotate. Secondly, the movements of the first link 241 and the second link 242 can be transmitted to the first folding arm 231 and the second folding arm 232 through the first guide block 246 and the second guide block 247, thereby realizing the relative rotation between the first folding arm 231 and the second folding arm 232. Finally, the movements of the first folding arm 231 and the second folding arm 232 can be transmitted to the two side beams 220 through the first slider 234 and the second slider 235, and further realizing the relative movement between the two side beams 220.

[0102] In some other embodiments, continue to refer to Figure 16 As shown, there are two folding devices 230, and the two folding devices 230 are connected by a synchronizing shaft 250. Connecting two or more folding devices 230 by a synchronizing shaft 250 can make the relative movement of the two side beams 220 in the tarpaulin cover 200 have higher synchronism. Especially when the size of the tarpaulin cover 200 is relatively long, this setting method can avoid the situation that the tarpaulin cover 200 cannot be folded in place due to the non-synchronous movement of the two side beams 220, thus facilitating the improvement of the folding effect of the tarpaulin cover 200.

[0103] Here, it should be noted that the folding directions of multiple different folding devices 230 can be different or the same. For example, referring to Figure 18 As shown, when the folding direction of the first folding device is forward along the extending direction of the side beam 220, the folding direction of the second folding device can be backward along the extending direction of the side beam 220, and the first folding device and the second folding device can also be respectively connected to two crawling devices 300 provided on the two cross beams 210 of the tarpaulin cover 200, and the first folding device and the second folding device are driven by two second driving members 360 in the two crawling devices 300; or, the folding direction of the second folding device can also be forward along the extending direction of the side beam 220. The present application does not limit the folding directions of different folding devices. Those skilled in the art can reasonably allocate the folding directions of different folding devices according to different product design requirements.

[0104] In some embodiments, refer to Figure 19As shown, the tarpaulin rack 100 further has a tensioner 150 disposed on the cross bar 130, and the tensioner 150 includes a connecting sleeve 151, a fixed seat 152, and an adjusting screw 153. Among them, the connecting sleeve 151 is respectively connected to the end of the guiding member 120, the fixed seat 152 is located below the connecting sleeve 151, and the fixed seat 152 is provided with a threaded hole (not marked in the figure); the adjusting screw 153 can pass through the threaded hole and be rotatably connected to the connecting sleeve 151, and the adjusting screw 153 is matched with the threaded hole to adjust the distance between the connecting sleeve 151 and the fixed seat 152.

[0105] It should be noted that although the guiding member 120 in the present application can be directly fixed to the surface of the cross bar 130 by means of welding, integral molding connection, etc. However, when the equipment runs for a long time, the relative force generated between the transmission member 330 and the guiding member 120 may affect the stability of the guiding member 120. In view of this, the present application adjusts the tightness of the guiding member 120 through the setting of the tensioner 150, so as to improve the stability and reliability of the crawling device 300 during the movement relative to the tarpaulin rack 100. And when the tensioner 150 is configured in the tarpaulin rack 100, the guiding member 120 and the cross bar 130 may not be connected by welding, that is, the guiding member 120 can be directly placed on the surface of the cross bar 130.

[0106] Optionally, the number of the tensioners 150 can be multiple, and the multiple tensioners 150 are respectively arranged corresponding to the ends of the multiple guiding members 120. This setting method enables the user to flexibly adjust the tension of the guiding member 120, so that the two have appropriate tension, to reduce the wear of the transmission components to a certain extent and extend the service life of the transmission components.

[0107] In addition, the embodiment of the present invention further provides a truck tarpaulin system, which is applied to the above-mentioned truck carriage. The truck tarpaulin system includes a tarpaulin rack 100 and a tarpaulin cover 200 matching the tarpaulin rack 100, and a crawling device 300 disposed on the tarpaulin cover 200;

[0108] The tarpaulin rack 100 has a guiding groove 110 and a pair of guiding members 120 arranged in parallel;

[0109] The crawling device 300 includes

[0110] a crawling seat 310 fixed to the tarpaulin cover 200;

[0111] a transmission shaft 320 arranged along the center line of the crawling seat 310;

[0112] a pair of transmission members 330 coaxially arranged outside the transmission shaft 320, and the pair of transmission members 330 respectively correspond to the pair of guiding members 120;

[0113] The connecting plate 340 is rotatably connected to the transmission shaft 320 at the upper part, and a roller 341 corresponding to the guide groove 110 is arranged at the lower part;

[0114] Wherein, through the cooperation between the roller 341 and the guide groove 110, and the cooperation between a pair of guiding members 120 and a pair of transmission members 330, the relative movement between the tarpaulin cover 200 and the tarpaulin frame 100 is realized.

[0115] The truck tarpaulin system provided by the embodiment of the present invention, when applied to the above-mentioned truck carriage, can bring great convenience to the loading and unloading process of users and is beneficial to the user experience.

[0116] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. Similarly, in order to streamline the present invention and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Among them, the claims following the specific implementation manner are hereby clearly incorporated into the specific implementation manner, and each claim itself is used as a separate embodiment of the present invention.

[0117] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a properly programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same hardware item. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A freight car compartment, characterized in that: It comprises a truck body and a truck tarpaulin system arranged on the truck body, wherein the truck tarpaulin system comprises a tarpaulin frame and a tarpaulin cover matched with the tarpaulin frame, and a crawling device arranged on the tarpaulin cover; The tarpaulin frame has a guide groove and a pair of guide members arranged in parallel; The crawling device comprises a crawling seat fixed to the tarpaulin cover; A transmission shaft arranged along the center line of the crawler seat; A pair of transmission members coaxially arranged outside the transmission shaft, and the pair of transmission members respectively correspond to the pair of guide members; A connecting plate, the upper portion of which is rotatably connected to the transmission shaft, and the lower portion of which is provided with a roller corresponding to the guide groove; The relative movement between the tarpaulin cover and the tarpaulin frame is achieved by the cooperation between the roller and the guide groove, and the cooperation between the pair of guide members and the pair of transmission members.

2. The freight car compartment according to claim 1, characterized in that: The tarpaulin frame includes a horizontal bar and a stake connected to the horizontal bar; A pair of guide members are arranged at intervals on both sides of the top surface of the cross bar, the guide groove passes through the top surface of the cross bar and is formed inside the cross bar, and the guide groove is located between the pair of guide members.

3. The freight car compartment according to claim 1, characterized in that: The tarpaulin frame includes a horizontal bar and a stake connected to the horizontal bar, and two side walls of the horizontal bar extend outward to form a supporting portion; A pair of guide members are respectively arranged on the supporting parts, the guide groove passes through the top surface of the cross bar and is formed inside the cross bar, and the guide groove is located between the pair of guide members.

4. The freight car compartment according to claim 1, characterized in that: The crawling device also includes a pair of guide rollers rotatably connected to the crawling seat, and the pair of guide rollers are located on both sides of the transmission member.

5. The freight car compartment according to claim 4, characterized in that: A gap is formed between the pair of guide rollers, and the gap is used to limit the rotation radius of the connecting plate relative to the transmission shaft.

6. The freight car compartment according to claim 2 or 3, characterized in that: The tarpaulin cover includes a pair of side beams perpendicular to the crossbar, and a folding device respectively connected to the pair of side beams, and the crawling device is arranged at the end of the side beams; Driven by the folding device and the crawling device, the pair of side beams can move toward or away from each other along the extension direction of the cross bar to achieve the opening and closing of the top of the tarpaulin cover.

7. The freight car according to claim 6, characterized in that: The folding device comprises a first folding arm and a second folding arm which are hinged to each other, and a first driving member which is respectively transmission-connected to the first folding arm and the second folding arm; A pair of side beams are each provided with a slide groove, and an end of the first folding arm and an end of the second folding arm are respectively matched with the slide groove; Driven by the first driving member, the first folding arm and the second folding arm move along the sliding groove respectively, so as to be close to or separated from each other, and realize the movement of the pair of side beams toward or away from each other.

8. The freight car compartment according to claim 6, characterized in that: The folding device comprises a first folding arm and a second folding arm which are hinged to each other, and a connecting rod assembly which is slidably connected to the first folding arm and the second folding arm respectively; A pair of side beams are each provided with a slide groove, and an end of the first folding arm and an end of the second folding arm are respectively matched with the slide groove; The crawling device also includes a second driving member connected to the first end of the transmission shaft, and the second end of the transmission shaft is connected to the connecting rod assembly. Under the drive of the second driving member and the transmission of the connecting rod assembly, the first folding arm and the second folding arm move along the slide groove respectively to make the two closer or separated, and realize the pair of side beams moving towards or away from each other.

9. The freight car compartment according to claim 8, characterized in that: The connecting rod assembly includes a first connecting rod and a second connecting rod which are hinged to each other, and a telescopic rod connected to the hinged joint of the first connecting rod and the second connecting rod; Among them, the first folding arm is provided with a first track groove, and the end of the first connecting rod is slidably matched with the first track groove; the second folding arm is provided with a second track groove, and the end of the second connecting rod is slidably matched with the second track groove; the telescopic rod is universally connected to the second end of the transmission shaft and can be telescoped and extended with the rotation of the transmission shaft.

10. A truck tarpaulin system, applied to a truck compartment as claimed in any one of claims 1 to 9, characterized in that: The truck tarpaulin system comprises a tarpaulin frame, a tarpaulin cover matching the tarpaulin frame, and a crawling device arranged on the tarpaulin cover; The tarpaulin frame has a guide groove and a pair of guide members arranged in parallel; The crawling device comprises a crawling seat fixed to the tarpaulin cover; A transmission shaft arranged along the center line of the crawler seat; A pair of transmission members coaxially arranged outside the transmission shaft, and the pair of transmission members respectively correspond to the pair of guide members; A connecting plate, the upper portion of which is rotatably connected to the transmission shaft, and the lower portion of which is provided with a roller corresponding to the guide groove; The relative movement between the tarpaulin cover and the tarpaulin frame is achieved by the cooperation between the roller and the guide groove, and the cooperation between the pair of guide members and the pair of transmission members.

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