CN219821184U - Vehicle-mounted telescopic tarpaulin - Google Patents

Abstract

The utility model relates to the technical field of transportation equipment and discloses a vehicle-mounted telescopic tarpaulin which comprises a supporting rod group, a tarpaulin and a traction driving structure, wherein the supporting rod group is arranged on the side surface of a carriage bottom plate and can move; the support rod group comprises vertical rods and diagonal rods which are arranged between two adjacent vertical rods and can move along with the vertical rods, a sliding structure matched with the vertical rods to move is arranged between the top of each diagonal rod and each vertical rod, and the bottom of each diagonal rod is movably connected with each vertical rod; the traction driving structure comprises a traction rope which is arranged on one side of the carriage bottom plate along the arrangement direction of the vertical rods and can drive the vertical rods to move along with the vertical rods, and a power structure which enables the traction rope to move. According to the utility model, the vertical rods and the inclined rods are arranged as the base support, and the traction rope is matched to pull the side vertical rods to realize the telescopic function of the awning cloth, so that the awning cloth is better in stability, difficult to break down, convenient to maintain and lower in cost.

Description

Vehicle-mounted telescopic tarpaulin

Technical Field

The utility model relates to the technical field of transportation equipment, in particular to a vehicle-mounted telescopic tarpaulin.

Background

Transport vehicles of various types are generally equipped with vehicle-mounted tarpaulins, which can prevent dust and rain, cover goods and prevent the goods from falling. The existing vehicle-mounted tarpaulin is disclosed in Chinese patent, and the document number is: CN218400363U, entitled: an automatic tarpaulin device with good stability is characterized in that an electric telescopic rod is used for supporting a base part at the side surface, and the joint of the electric telescopic rod and an electric sliding block is movably connected, so that the base part is easy to shake; in addition, the automatic tarpaulin stretches out and draws back through the electric sliding rail and the electric sliding block, and the electric sliding rail and the electric sliding block are always exposed outside and are easy to damage although manual pulling and covering are not needed, and the automatic tarpaulin is easy to damage, and is completely dependent on electric facilities, is trouble in maintenance and is high in cost.

Disclosure of Invention

The purpose of the utility model is that: overcomes the defects existing in the prior art, provides a vehicle-mounted telescopic tarpaulin, supports through setting up montant and inclined rod as the basal portion, cooperates haulage rope pulling side montant to realize the flexible function of tarpaulin for tarpaulin stability is better, is difficult to break down moreover, easy maintenance, and the cost is lower.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a vehicle-mounted telescopic tarpaulin comprises a supporting rod group, a tarpaulin and a traction driving structure, wherein the supporting rod group is arranged on the side surface of a carriage bottom plate and can move, the tarpaulin is erected on the supporting rod group, and the traction driving structure is arranged at the end part of the supporting rod group; the support rod group comprises vertical rods and diagonal rods which are arranged between two adjacent vertical rods and can move along with the vertical rods, a sliding structure matched with the vertical rods to move is arranged between the top of each diagonal rod and each vertical rod, and the bottom of each diagonal rod is movably connected with each vertical rod; the traction driving structure comprises a traction rope which is arranged on one side of the carriage bottom plate along the arrangement direction of the vertical rods and can drive the vertical rods to move along with the vertical rods, and a power structure for enabling the traction rope to move; the traction rope is connected end to form a closed loop, one end of the closed loop is sleeved on the pulley, the power structure comprises a through shaft which drives the traction rope to move along the arrangement direction of the vertical rods through autorotation, the other end of the traction rope is sleeved on the through shaft, allowance is reserved, and the allowance is wound on the through shaft; the carriage bottom plate is rotationally connected with a plurality of sections of box baffle plates, and two adjacent sections of box baffle plates are fixed through a positioning plate fixed with the carriage bottom plate.

Further, sliding structure is including the cover establishes the sliding sleeve on being close to the montant at diagonal draw bar top, and the sliding sleeve side corresponds the position of diagonal draw bar and is equipped with the sliding sleeve connecting plate, and the sliding sleeve connecting plate sets up along the montant direction of arranging, has seted up the cooperation and has rotated the groove on the diagonal draw bar that the sliding sleeve connecting plate corresponds, and the sliding sleeve connecting plate rotates with the cooperation and is connected with the groove when diagonal draw bar activity, and the size and the sliding sleeve connecting plate size looks adaptation of cooperation rotation groove all have seted up the mounting hole on sliding sleeve connecting plate and the diagonal draw bar that corresponds, are provided with the first round pin axle of rotating with both and being connected in the mounting hole.

Further, the vertical rods comprise movable vertical rods and end vertical rods which are arranged close to the through shaft; the tops of the vertical rods corresponding to the two sides of the carriage bottom plate are integrally connected with arch pipes, and each diagonal draw bar at least comprises a first diagonal draw bar inclined rightwards and/or a second diagonal draw bar inclined leftwards; the two ends of the supporting rod group are respectively provided with a positioning block penetrated by the traction rope, the positioning block close to the through shaft is in sliding connection with the traction rope, and the other positioning block is fixedly connected with the positioning block.

Further, when the same group of diagonal rods comprises a first diagonal rod and a second diagonal rod, the first diagonal rod and the second diagonal rod are arranged in a crossing mode, the end portions of the first diagonal rod and the second diagonal rod are located on the same vertical plane, the crossing portions are respectively arranged in a front bending mode and a rear bending mode, through holes penetrating the first diagonal rod and the second diagonal rod are formed in the crossing portions of the first diagonal rod and the second diagonal rod, and a second pin shaft which is connected with the first diagonal rod and the second diagonal rod in a rotating mode is arranged in the through holes.

Further, the traction driving structure further comprises a chute arranged at the bottom of the supporting rod set, the bottom of the vertical rod is connected with a roller shaft, the roller shaft is rotationally connected with the roller, and the roller is in rolling connection with the chute.

Further, the power structure also comprises a supporting plate fixed at the end part of the carriage bottom plate, the through shaft penetrates through the supporting plate and is rotationally connected with the supporting plate, a second driving wheel is fixedly connected to the through shaft, a power input shaft is rotationally connected to the supporting plate, the power input shaft is fixedly connected with a handle through a handle lock hole on the power input shaft, the power input shaft is fixedly connected with a second driving wheel, and the second driving wheel is meshed with the second driving wheel.

Further, the backup pad includes two long boards that the interval set up, and power input shaft passes one of them long board, fixedly connected with motor on another long board, motor and motor output shaft fixed connection, motor output shaft and first action wheel fixed connection, power input shaft corresponds first action wheel department fixedly connected with first drive wheel, first action wheel and first drive wheel meshing.

Each section of box breast board is divided into an upper section and a lower section, the inner side of the lower section of box breast board is provided with two rotating shafts, the upper and lower interval distance of the two rotating shafts is set, the top of the rotating shaft positioned on the upper part exceeds the lower section of box breast board to be rotationally connected with the upper section of box breast board, the lower section of box breast board is rotationally connected with a carriage bottom plate through the rotating shaft positioned on the lower part, and the height of the lower section of box breast board is larger than the width of the sliding groove.

The beneficial effects of the utility model are as follows: according to the utility model, a motor-driven power structure is formed by arranging the first driving wheel, the motor and the motor output shaft, a hand-driven power structure is formed by arranging the second driving wheel, the power input shaft and the handle, both the two structures can drive the through shaft, the traction rope is sleeved on the through shaft and flows out of allowance, the traction rope can be driven to wind and relax on the through shaft when the through shaft rotates, the upper wire continues to wind when the through shaft is contracted, the lower wire is unwound, the opposite direction is realized when the lower wire extends, a positioning block fixed with the traction rope is arranged on the vertical rod, the traction rope drives the positioning block to drive the vertical rod, the vertical rod moves to drive the diagonal rod to vertically combine to finish stretching, the vertical rod and the diagonal rod are used as a base support, and the traction rope is matched to pull the side vertical rod to realize the stretching function of the tarpaulin, the traction rope only needs to arrange the power structure at the end part, both the manual operation and the electric operation can be selected, so that the tarpaulin stability is better, faults are not easy to occur, the maintenance is convenient, and the cost is low.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1B according to the present utility model;

FIG. 4 is a schematic view of a first type of shape-imparting flattened section of the crossed diagonal draw bar of the present utility model;

FIG. 5 is a schematic view of a roller structure according to the present utility model;

FIG. 6 is a schematic top view of a power structure of the present utility model;

FIG. 7 is a schematic view of a box rail structure of the present utility model;

FIG. 8 is a schematic elevational view of a second type of shape contracted state of the crossed diagonal draw bar of the present utility model;

fig. 9 is a schematic side view of the cross diagonal draw bar of the present utility model.

In the figure, 1, a carriage bottom plate; 2. a chute; 3. an end vertical rod; 4. a movable vertical rod; 5. a first diagonal draw bar; 6. the second diagonal draw bar; 7. a roller shaft; 8. a roller; 9. a support plate; 10. a through shaft; 11. a motor; 12. an output shaft of the motor; 13. a first drive wheel; 14. a first driving wheel; 15. a second driving wheel; 16. a second driving wheel; 17. a power input shaft; 18. a handle; 19. a traction rope; 20. a positioning block; 21. a sliding sleeve connecting plate; 22. a first pin; 23. a sliding sleeve; 24. a flat portion; 25. a second pin; 26. a box rail; 27. a positioning plate; 28. a pulley; 29. an arch pipe; 30. a rotating shaft.

Detailed Description

The utility model is further illustrated by the following description in conjunction with the accompanying drawings and specific embodiments.

Examples:

as shown in fig. 1 to 9, a vehicle-mounted telescopic tarpaulin includes a support bar set disposed on a side surface of a floor 1 of a vehicle and capable of moving along a length direction thereof, and is arranged along the length direction, a tarpaulin (not shown in the drawings, which is conventionally disposed, and may be mounted as described in the background art document), and a traction driving structure disposed at an end portion of the support bar set; the support rod group comprises vertical rods and diagonal rods which are arranged between two adjacent vertical rods and can move along with the vertical rods, a sliding structure matched with the vertical rods to move is arranged between the top of each diagonal rod and each vertical rod, and the bottom of each diagonal rod is movably connected with each vertical rod; the traction driving structure comprises a traction rope 19 which is arranged on one side of the carriage bottom plate 1 along the arrangement direction of the vertical rods and can drive the vertical rods to move along with the vertical rods, and a power structure for enabling the traction rope 19 to move; the traction rope 19 is connected end to form a closed loop, one end of the closed loop is sleeved on the pulley 28, the power structure comprises a through shaft 10 which drives the traction rope 19 to move along the arrangement direction of the vertical rods through autorotation, the other end of the traction rope 19 is sleeved on the through shaft 10, allowance is reserved, and the allowance is wound on the through shaft 10; the carriage bottom plate 1 is rotationally connected with box baffle plates 26, and two adjacent box baffle plates 26 are fixed through a positioning plate 27 fixed with the carriage bottom plate 1; the through shaft 10 is arranged along the width direction of the carriage bottom plate 1, the longer side of the carriage bottom plate 1 is defined as long, the shorter side is defined as wide, and the front and rear directions are positioned along the width direction; the vertical rod arrangement direction is the arrangement direction of a closed-loop traction rope 19.

The sliding structure comprises a sliding sleeve 23 sleeved on a vertical rod close to the top of the diagonal draw bar, the sliding sleeve 23 is in sliding connection with the vertical rod, a sliding sleeve connecting plate 21 is fixedly connected to the side face of the sliding sleeve 23 corresponding to the diagonal draw bar, the sliding sleeve connecting plate 21 is arranged along the arrangement direction of the vertical rod, a matched rotating groove is formed in the diagonal draw bar corresponding to the sliding sleeve connecting plate 21 along the arrangement direction of the vertical rod, the sliding sleeve connecting plate 21 is rotationally connected with the matched rotating groove when the diagonal draw bar moves, the top of the matched rotating groove penetrates through the top of the diagonal draw bar, limiting holes are formed in the sliding sleeve connecting plate 21 and the corresponding diagonal draw bar, and a first pin shaft 22 rotationally connected with the sliding sleeve connecting plate 21 and the corresponding diagonal draw bar is arranged in the limiting holes; the bottom of the diagonal draw bar and the corresponding vertical bar are movably connected by arranging a sliding sleeve connecting plate 21; the sliding sleeve connecting plate 21 is generally a cuboid thin plate, the size of the matched rotating groove is matched with that of the sliding sleeve connecting plate 21, namely, the height of the matched rotating groove is at least larger than that of the sliding sleeve connecting plate 21, and even the height of the matched rotating groove can be set to be larger than the height of the largest diagonal line of the sliding sleeve connecting plate 21, so that the sliding sleeve connecting plate 21 and the matched rotating groove are not limited in relative rotation when the diagonal draw bar moves up and down along with the sliding sleeve 23.

The vertical rods comprise movable vertical rods 4 and end vertical rods 3 which are arranged close to the through shafts 10, arch pipes 29 are integrally connected to the tops of the vertical rods corresponding to the two sides of the carriage bottom plate 1, the end vertical rods 3 are not moved in general, and the traction ropes 19 drive the movable vertical rods 4 to move, so that tarpaulin is driven to stretch, and each diagonal draw bar at least comprises a first diagonal draw bar 5 which inclines rightwards and/or a second diagonal draw bar 6 which inclines leftwards; the two ends of the supporting rod group are respectively provided with a positioning block 20 penetrated by the traction rope 19, the positioning block 20 close to the through shaft 10 is in sliding connection with the traction rope 19, other vertical rods can be provided with the positioning blocks 20 which can be in sliding connection with the traction rope 19, and the other positioning blocks 20 are fixedly connected with the positioning blocks. The positioning block 20 which is generally in sliding connection with the traction rope 19 is arranged on the end vertical rod 3, the other positioning block 20 is fixedly connected with the far-end movable vertical rod 4, and the traction rope 19 is connected end to end and sleeved on the pulley 28 and then is divided into an upper line and a lower line, wherein the upper line passes through the positioning block 20; the two sides of the carriage bottom plate 1 are provided with supporting rod groups corresponding to the positions, the sizes and the like, and the vertical rods and the diagonal rods on the same side are basically positioned in the same vertical plane.

When the same group of diagonal rods comprises a first diagonal rod 5 and a second diagonal rod 6, the first diagonal rod 5 and the second diagonal rod 6 are arranged in a crossing way, the end parts of the first diagonal rod 5 and the second diagonal rod 6 are positioned on the same vertical plane, the crossing parts are respectively arranged in a front bending way and a back bending way, namely the crossing parts of the first diagonal rod 5 are bent forwards, the crossing parts of the second diagonal rod 6 are bent backwards, or the crossing parts of the first diagonal rod 5 are bent backwards, the crossing parts of the second diagonal rod 6 are bent forwards, through holes penetrating the first diagonal rod 5 and the second diagonal rod 6 are formed in the crossing parts, a second pin shaft 25 which is simultaneously connected with the first diagonal rod 5 and the second diagonal rod 6 in a rotating way is arranged in the through holes, and the bending length can be adjusted according to conditions; as shown in fig. 9, the cross portion of the first diagonal draw bar 5 is bent backward, the cross portion of the second diagonal draw bar 6 is bent forward, and the two diagonal draw bars are tangent at the joint of the second pin 25.

As shown in fig. 4, the first diagonal draw bar 5 and the second diagonal draw bar 6 may also be used to press the flat portion 24 at the intersection portion thereof, although the two end portions are located in the same vertical plane, the flat portions 24 pressed by the two may be tangential without affecting the expansion and contraction along with the vertical rod, and the length of the flat portion 24 may be optionally set, and the flat portion 24 is connected through the second pin shaft 25, so that the flat portion is stable.

The first diagonal draw bar 5 and the second diagonal draw bar 6 can be in a first type shape as shown in fig. 4, namely, the whole diagonal draw bar is in a straight line shape in a front view state, and can also be in a second type shape as shown in fig. 8, namely, the whole diagonal draw bar 5 and the whole diagonal draw bar 6 are in a fold line shape in a front view state, and the connection point of the rod section at the crossing part and the rod section outside the crossing part is a folding point.

The traction driving structure further comprises a chute 2 arranged at the bottom of the supporting rod set, the bottom of the vertical rod is connected with a roller shaft 7, the roller shaft 7 is rotationally connected with a roller 8, and the roller 8 is in rolling connection with the chute 2; the concrete shape of spout 2 is a bottom plate, and two L shaped plates are fixed in the bottom plate both sides along width direction, and an L shaped plate forms a half I-shaped sliding space with the bottom plate, and the both ends of roller shaft 7 are connected with a gyro wheel 8 respectively, and gyro wheel 8 rolls in half I-shaped space, and the roll is more stable, can guarantee simultaneously that the bracing piece group is located spout 2 intermediate position, reserves certain space with its box breast board 26.

The power structure also comprises a supporting plate 9 fixed at the end part of the carriage bottom plate 1, a through shaft 10 penetrates through the supporting plate 9 and is in rotary connection with the supporting plate, a second driving wheel 16 is fixedly connected to the through shaft 10, a power input shaft 17 is in rotary connection with the supporting plate 9, the power input shaft 17 is fixedly connected with a handle 18 through a handle lock hole on the power input shaft, the power input shaft 17 is fixedly connected with a second driving wheel 15, and the second driving wheel 15 is meshed with the second driving wheel 16.

The supporting plate 9 comprises two long plates arranged at intervals, the power input shaft 17 penetrates through one long plate, the other long plate is fixedly connected with the motor 11, the motor 11 is fixedly connected with the motor output shaft 12, the motor output shaft 12 is fixedly connected with the first driving wheel 13, the position, corresponding to the first driving wheel 13, of the power input shaft 17 is fixedly connected with the first driving wheel 14, the first driving wheel 13 is meshed with the first driving wheel 14, the motor 11 is a direct current motor, and when the handle 18 and the motor 11 are simultaneously installed, the first driving wheel 13 is driven, but the resistance is smaller and the acceptable range is reached; the first driving wheel 13 and the power input shaft 17 are both provided with locking structures, when the tarpaulin stretches out and draws back, the power input shaft 17 or the first driving wheel 13 needs to be locked to be fixed, and the tarpaulin is prevented from sliding and stretching out and drawing back at will.

Each section of box body breast board 26 is divided into an upper section and a lower section, two rotating shafts 30 are arranged on the inner sides of the lower section of box body breast boards, the two rotating shafts 30 are arranged at intervals up and down, the top of the rotating shaft 30 positioned at the upper part exceeds the lower section of box body breast board to be rotatably connected with the upper section of box body breast board, the lower section of box body breast board is rotatably connected with the carriage bottom board 1 through the rotating shaft 30 positioned at the lower part, the height of the lower section of box body breast board is larger than the width of the chute 2, the lower section of box body breast board is turned over and then is erected on the chute 2, and the upper section of box body breast board freely hangs down; the upper box baffle is far larger than the lower box baffle, the rotating shaft 30 at the upper part can prevent the upper box baffle from tipping inwards, and the arrangement of the lower box baffle improves the height of the upper box baffle, so that the box baffle 26 is not contacted with the chute 2 when tipping; the carriage bottom plate 1 is provided with a jack, the bottom of the positioning plate 27 is spliced with the jack so as to be fixed, the positioning plate 27 is used for fixing the box body baffle plate 26 similarly to the existing carriage of a truck, a horizontal baffle bar is arranged at the outer side or the inner side of the positioning plate 27 at the same time, the baffle bar can be rotated and fixed in position, the baffle bar is horizontally arranged in a normal state, the box body baffle plate is blocked to be vertical, and when the box body baffle plate 26 needs to be turned over, the baffle bar is rotated to be vertical, and the upper section and the lower section of the box body baffle plate 26 can be turned over; the space between the box fences 26 on both sides of the floor 1 is defined as the inner side of the box fences 26.

The working process comprises the following steps: the motor 11 is selected to be started or the handle 18 is held to be started, if the motor 11 is selected, the motor 11 drives the motor output shaft 12, the motor output shaft 12 drives the first driving wheel 13, the first driving wheel 13 drives the first driving wheel 14, the first driving wheel 14 drives the power input shaft 17, the power input shaft 17 drives the second driving wheel 15, and the second driving wheel 15 drives the second driving wheel 16; when the handle 18 is selected to be started, the first driving wheel 13 can be removed or not, because the handle is a direct current motor, the resistance is small, the handle 18 rotates to drive the power input shaft 17, the power input shaft 17 drives the second driving wheel 15, the second driving wheel 15 drives the second driving wheel 16, the second driving wheel 16 drives the through shaft 10, the through shaft 10 rotates to drive the traction rope 19, the traction rope 19 pulls the positioning block 20 fixed with the positioning block 20, the positioning block 20 drives the movable vertical rod 4 and the arched tube 29, the movable vertical rod 4 drives the diagonal rod to stretch, the movable vertical rod 4 smoothly moves in the chute 2 due to the roller 8, the sliding sleeve 23 moves upwards, the first diagonal rod 5 and the second diagonal rod 6 are combined with the chute and upwards, meanwhile, the sliding sleeve connecting plate 21 rotates in the matched rotating groove, so that the first diagonal rod 5 and the second diagonal rod 6 are smoothly combined, and when the sliding sleeve connecting plate 21 stretches, the through shaft 10 is reversely rotated; the shrinkage tarpaulin is accomplished, takes down whole or partial locating plate 27 as required and takes down, and the goods are loaded and unloaded after the pivot 30 that cuts box sideboard and lower cut box sideboard around upper portion and lower portion overturns, and the last box sideboard that cuts after the upset is put up on spout 2, and lower cut box sideboard freedom whereabouts.

The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.

Claims (8)

1. The utility model provides a scalable tarpaulin of on-vehicle which characterized in that: the traction driving device comprises a movable supporting rod group arranged on the side surface of a carriage bottom plate (1), awning cloth erected on the supporting rod group and a traction driving structure arranged at the end part of the supporting rod group; the support rod group comprises vertical rods and diagonal rods which are arranged between two adjacent vertical rods and can move along with the vertical rods, a sliding structure matched with the vertical rods to move is arranged between the top of each diagonal rod and each vertical rod, and the bottom of each diagonal rod is movably connected with each vertical rod; the traction driving structure comprises a traction rope (19) which is arranged at one side of the carriage bottom plate (1) along the arrangement direction of the vertical rods and can drive the vertical rods to move along with the vertical rods, and a power structure for enabling the traction rope (19) to move; the traction rope (19) is connected end to form a closed loop, one end of the closed loop is sleeved on the pulley (28), the power structure comprises a through shaft (10) which drives the traction rope (19) to move along the arrangement direction of the vertical rods through autorotation, the other end of the traction rope (19) is sleeved on the through shaft (10) and is provided with allowance, and the allowance is wound on the through shaft (10); a plurality of box baffle plates (26) are rotationally connected on the carriage bottom plate (1), and two adjacent box baffle plates (26) are fixed through a positioning plate (27) fixed with the carriage bottom plate (1).

2. The vehicle-mounted telescopic tarpaulin according to claim 1, wherein: sliding structure is including the cover establishing sliding sleeve (23) on being close to the montant at diagonal draw bar top, the position that sliding sleeve (23) side corresponds the diagonal draw bar is equipped with sliding sleeve connection board (21), sliding sleeve connection board (21) are along montant direction setting of arranging, the cooperation rotary groove has been seted up on the diagonal draw bar that sliding sleeve connection board (21) corresponds, sliding sleeve connection board (21) are rotated with the cooperation rotary groove and are connected during diagonal draw bar activity, the size in cooperation rotary groove and sliding sleeve connection board (21) size looks adaptation, all set up the mounting hole on sliding sleeve connection board (21) and the diagonal draw bar that corresponds, be provided with in the mounting hole with both rotate first round pin axle (22) of being connected.

3. A vehicle-mounted telescopic tarpaulin according to claim 2, wherein: the vertical rod comprises a movable vertical rod (4) and an end vertical rod (3) which is arranged close to the through shaft (10); the tops of the vertical rods corresponding to the two sides of the carriage bottom plate (1) are integrally connected with arch pipes (29), and each diagonal draw bar at least comprises a first diagonal draw bar (5) inclining rightwards and/or a second diagonal draw bar (6) inclining leftwards; two ends of the supporting rod group are respectively provided with a positioning block (20) penetrated by the traction rope (19), the positioning block (20) close to the through shaft (10) is in sliding connection with the traction rope (19), and the other positioning block (20) is fixedly connected with the traction rope.

4. A vehicle-mounted telescopic tarpaulin according to claim 3, wherein: when the same group of diagonal rods comprises a first diagonal rod (5) and a second diagonal rod (6), the first diagonal rod (5) and the second diagonal rod (6) are arranged in a crossing mode, the end portions of the first diagonal rod and the second diagonal rod (6) are located on the same vertical plane, the crossing portions are respectively arranged in a front bending mode and a rear bending mode, through holes penetrating the first diagonal rod (5) and the second diagonal rod (6) are formed in the crossing portions, and a second pin shaft (25) which is simultaneously connected with the first diagonal rod and the second diagonal rod in a rotating mode is arranged in the through holes.

5. The vehicle-mounted telescopic tarpaulin according to claim 1, wherein: the traction driving structure further comprises a sliding groove (2) arranged at the bottom of the supporting rod set, the bottom of the vertical rod is connected with a roller shaft (7), the roller shaft (7) is rotationally connected with a roller (8), and the roller (8) is in rolling connection with the sliding groove (2).

6. The vehicle-mounted telescopic tarpaulin according to claim 1, wherein: the power structure also comprises a supporting plate (9) fixed at the end part of the carriage bottom plate (1), a through shaft (10) penetrates through the supporting plate (9) and is rotationally connected with the supporting plate, a second driving wheel (16) is fixedly connected to the through shaft (10), a power input shaft (17) is rotationally connected to the supporting plate (9), the power input shaft (17) is fixedly connected with a handle (18) through a handle lock hole on the power input shaft (17), the power input shaft (17) is fixedly connected with a second driving wheel (15), and the second driving wheel (15) is meshed with the second driving wheel (16).

7. The vehicle-mounted telescopic tarpaulin according to claim 6, wherein: the backup pad (9) include two long boards that the interval set up, and power input shaft (17) pass one of them long board, fixedly connected with motor (11) on another long board, motor (11) and motor output shaft (12) fixed connection, motor output shaft (12) and first action wheel (13) fixed connection, power input shaft (17) correspond first action wheel (13) department fixedly connected with first drive wheel (14), first action wheel (13) and first drive wheel (14) meshing.

8. The vehicle-mounted telescopic tarpaulin according to claim 1, wherein: every section box breast board (26) divide into two about, lower section box breast board inboard is provided with two pivots (30), and interval distance sets up about two pivots (30), and pivot (30) top that are located upper portion surpass down section box breast board setting and last section box breast board rotate to be connected, and lower section box breast board rotates with carriage bottom plate (1) through pivot (30) that are located the lower part to be connected, and lower section box breast board highly is greater than the width of spout (2).