Tarpaulin tension degree detection structure

Abstract

The utility model provides a tarpaulin tensity detection structure which comprises a supporting vertical rod, and a plurality of stabilizing rods are horizontally arranged on the periphery of the bottom of the supporting vertical rod. The lifting piece is vertically and movably connected to the supporting vertical rod; the detection rod is vertically and movably connected to the supporting vertical rod, the top of the detection rod is higher than the top of the supporting vertical rod, and a linkage part is fixedly arranged on the side portion of the detection rod. The top of the elastic piece is connected with the lifting piece, the bottom of the elastic piece is connected with the linkage part, a plurality of indication grooves which are vertically distributed are horizontally formed in the side portion of the supporting vertical rod, and the linkage part can move to be right opposite to any indication groove. The tarpaulin tensity detection structure provided by the utility model enables the construction effect to be better.

Description

Technical Field

[0001] This utility model belongs to the field of tarpaulin installation technology, and relates to a tarpaulin tension detection structure. Background Technology

[0002] A carport (also known as a car shelter) is an outdoor barrier used to protect vehicles from damage. It is a protective structure that mainly provides shelter from wind, rain, sun, and beautifies the landscape, as well as protection against falling objects from heights. It is commonly found in private or public outdoor places such as residential buildings, villa communities, companies, schools, shops, stadiums, factories, and government agencies.

[0003] Commonly available car canopies on the market mainly consist of a bottom canopy frame and a top canopy fabric. During on-site installation, the frame is first fixed to the ground, then the canopy fabric is pulled and pulled to cover the top of the frame, and finally, the canopy fabric is pressed and secured to the perimeter of the frame. Because some canopies are wide or long, the tension of the canopy fabric needs to be checked before securing it. If the canopy fabric is too loose, it can easily cause rainwater accumulation or the canopy fabric to shift, while if the canopy fabric is too tight, it can easily cause damage at the connection between the canopy fabric and the frame. Currently, the tension of the canopy fabric is mostly checked by workers manually pulling the canopy fabric up or down, judging whether the tension is appropriate based on feel and experience. Because this method of judgment is mainly based on experience and has a large subjective influence, it lacks standardization and can result in the canopy fabric being too loose or too tight, leading to poor installation results. Utility Model Content

[0004] The purpose of this invention is to provide a tarpaulin tension detection structure, which aims to solve the problem of poor construction results.

[0005] To solve the above-mentioned technical problems, this utility model provides a tarpaulin tension detection structure, comprising:

[0006] A supporting vertical rod, wherein several stabilizing rods are horizontally arranged around the bottom periphery of the supporting vertical rod;

[0007] A lifting component, which is vertically and movably connected to the supporting vertical rod;

[0008] A detection rod is vertically and movably connected to the supporting vertical rod, and the top of the detection rod is higher than the top of the supporting vertical rod. A linkage part is fixedly provided on the side of the detection rod.

[0009] A vertical elastic element is provided, with its top connected to the lifting element and its bottom connected to the linkage part. The side of the supporting vertical rod is provided with several vertically distributed indicator grooves, and the linkage part can be moved to be directly opposite any of the indicator grooves.

[0010] The present invention is further configured such that the supporting vertical rod includes a bottom rod portion and a top rod portion, the stabilizing rod is connected to the bottom rod portion, the bottom rod portion has a vertically opened lifting port for inserting the top rod portion in the middle, the top rod portion is movably connected to the bottom rod portion, and the bottom rod portion is provided with a positioning mechanism for fixing the position of the top rod portion.

[0011] The present invention is further configured such that a plurality of positioning columns are horizontally arranged on the side of the top rod portion, and the inner wall of the lifting port is provided with a clearance opening for the vertical movement of the positioning columns.

[0012] The positioning mechanism includes a positioning disk rotatably connected to the top side of the bottom rod. The positioning disk has a positioning part with a spiral cross-section on the side near the positioning post. The positioning part can be engaged between any two adjacent positioning posts at any position. An L-shaped rotating handle is provided on the outer side of the positioning disk.

[0013] The present invention is further configured such that the positioning mechanism includes a positioning screw that is horizontally threaded to the top of the bottom rod, the inner end of the positioning screw abuts against the outer wall of the top rod, and the outer end of the positioning screw is provided with an operating handle perpendicular to the positioning screw.

[0014] The present invention is further configured such that a lifting hole is provided in the middle of the top rod portion, and the outer wall of the detection rod is movably fitted to the inner wall of the lifting hole;

[0015] A vertically extending movable hole is provided on one side of the top rod, and a termination hole and an operating hole are respectively provided on both sides of the movable hole. There is a set height difference between the top and bottom of the lifting member. Both horizontal ends of the lifting member are movably attached to the inner wall of the movable hole. A termination part and an operating rod are respectively provided at both horizontal ends of the lifting member. Both sides of the termination part are movably attached to the inner walls of both sides of the termination hole, and both sides of the operating rod are movably attached to the inner wall of the operating hole.

[0016] The linkage is movably located within the movable hole. An indicator is provided at one end of the outer side of the linkage. A receiving groove for the indicator to move up and down is provided on the side of the bottom of the movable hole. The indicator grooves are all located on the inner wall of the receiving groove.

[0017] The present invention is further configured such that a lever is horizontally provided on the side of the top rod, and the lever is located above the operating rod.

[0018] The present invention is further configured such that a storage groove is provided on the side of the top rod, one end of the lever rod is hinged to the inner wall of the bottom of the storage groove, and a positioning magnet for fixing the other end of the lever rod is provided on the top of the storage groove. Rotating the lever rod can make the lever rod located in the storage groove, and the positioning magnet is magnetically attracted to the top rod.

[0019] The bottom of the inner side of the lifting component is horizontally grooved. One end of the operating rod is hinged to the inner end of the horizontal groove. When the operating rod is horizontal, the top of the operating rod abuts against the inner wall of the horizontal groove. Rotating the operating rod downwards allows the free end of the operating rod to pass through the operating hole and be located in the movable hole. When the operating rod is located in the movable hole and the lever is located in the storage groove, both the lever and the operating rod can be moved into the inner bottom rod portion.

[0020] The present invention is further configured such that a spacing arm is horizontally provided on the outer wall of the top rod, a swing arm is hinged to the top of the free end of the spacing arm, a vertical arm is provided at the free end of the swing arm perpendicular to the swing arm, the vertical arm and the swing arm form a T-shape, and drag-reducing wheels are rotatably provided at both ends of the vertical arm, the top of the drag-reducing wheels being higher than the top of the vertical arm.

[0021] The present invention is further configured such that two termination plates are arranged opposite each other on the top of the spacing arm, the two termination plates are located on both sides of the hinge point between the swing arm and the spacing arm, and the top of the detection rod is hemispherical or has a drag-reducing ball rotatably arranged.

[0022] The present invention is further configured such that an anti-detachment ring is provided on the outer wall of the detection rod, and the anti-detachment ring is higher than the top rod portion.

[0023] Compared with the prior art, this utility model provides a tarpaulin tension detection structure. When detecting the tarpaulin tension, one side of the tarpaulin is first fixedly connected to the top of the frame, and then the other side of the tarpaulin is pulled but not fixed yet. It is fixed after the test is qualified. If it is not qualified, the tension needs to be adjusted to qualified before it is fixed.

[0024] During the inspection, the support pole is first moved below the area of ​​the tarpaulin to be inspected, ensuring the top of the inspection rod is flush against the bottom of the area, without any interaction between the rod and the tarpaulin. The worker then manually raises the lifting mechanism to a fixed height, such as 5cm, 10cm, or 15cm (the height can be selected based on actual needs). As the lifting mechanism rises, it simultaneously raises the linkage and inspection rod via the elastic element. Once the inspection rod is in a stable position, the linkage aligns with one of the indicator grooves. If the tarpaulin is too loosely tensioned, the height of the indicator groove aligned with the linkage will be higher; conversely, if the tarpaulin is too tight, the height will be lower. The worker can then determine whether the tarpaulin tension is acceptable based on the height of the indicator groove aligned with the linkage. In practice, the acceptable tension of the tarpaulin is not a fixed value, but rather a range. For example, if the top of the linkage aligns with the 5th to 7th indicator groove from the bottom, it is considered acceptable; otherwise, it is unacceptable. Therefore, in practice, the tarpaulin tension does not necessarily have to reach a specific value to be considered acceptable. Furthermore, the required tension varies depending on the width and material of the tarpaulin. Therefore, the range of indicator grooves that the linkage should align with is not fixed but needs to be adjusted according to actual needs.

[0025] Since the determination of tarpaulin tension in this application is not based on the worker's subjective judgment, the determination effect can be more accurate; secondly, the worker only needs to be below the tarpaulin to determine the tension, without having to climb to a high place to operate, thus making the operation safer and more convenient. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the present invention in use;

[0027] Figure 2 yes Figure 1 Enlarged view of section A;

[0028] Figure 3 yes Figure 1 Enlarged view of section B;

[0029] Figure 4 yes Figure 1 Enlarged view of section C;

[0030] Figure 5 This is a schematic diagram of the structure of this utility model;

[0031] Figure 6 yes Figure 5 Enlarged view of section D;

[0032] Figure 7 yes Figure 5 Enlarged view of section E in the middle;

[0033] Figure 8 This is a schematic diagram of the bottom rod portion of this utility model;

[0034] Figure 9 This is a schematic diagram of the top rod part in this utility model;

[0035] Figure 10 yes Figure 9 Enlarged view of section F in the middle;

[0036] Figure 11 This is a schematic diagram of the detection rod in this utility model;

[0037] Figure 12 yes Figure 11 Enlarged view of section G in the middle;

[0038] Figure 13 This is a sectional view of the top rod portion in this utility model;

[0039] Figure 14 This is a schematic diagram of the lifting component in this utility model;

[0040] Figure 15 This is a schematic diagram of the positioning disk part in this utility model.

[0041] The components include: 1. Supporting vertical rod; 1a. Bottom rod; 1b. Top rod; 2. Stabilizing rod; 3. Lifting component; 4. Detection rod; 5. Linkage component; 6. Elastic component; 7. Indicating groove; 8. Lifting port; 9. Positioning column; 10. Clearance port; 11. Positioning plate; 12. Positioning part; 13. Rotating handle; 14. Lifting hole; 15. Movable hole; 16. Termination hole; 17. Operating hole; 18. Termination part; 19. Operating rod; 20. Indicating part; 21. Receiving groove; 22. Assist rod; 23. Storage groove; 24. Positioning magnet; 25. Horizontal groove; 26. Spacing arm; 27. Swing arm; 28. Vertical arm; 29. ​​Drag-reducing wheel; 30. Termination plate; 31. Anti-derailment ring. Detailed Implementation

[0042] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the tarpaulin tension detection structure proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0043] A tarpaulin tension detection structure, such as Figures 1 to 15 As shown, it includes:

[0044] A supporting vertical rod 1, wherein several stabilizing rods 2 are horizontally arranged around the bottom periphery of the supporting vertical rod 1;

[0045] Lifting component 3, which is vertically and movably connected to the supporting vertical rod 1;

[0046] The detection rod 4 is vertically and movably connected to the supporting vertical rod 1, and the top of the detection rod 4 is higher than the top of the supporting vertical rod 1. A linkage part 5 is fixedly provided on the side of the detection rod 4.

[0047] A vertical elastic element 6 is provided, with its top connected to the lifting element 3 and its bottom connected to the linkage part 5. The side of the supporting vertical rod 1 is provided with several vertically distributed indicator grooves 7 (i.e., each indicator groove 7 is horizontal, but multiple indicator grooves 7 are vertically distributed). The linkage part 5 can be moved to be directly opposite any of the indicator grooves 7.

[0048] The supporting vertical rod 1 includes a bottom rod part 1a and a top rod part 1b. The stabilizing rod 2 is connected to the bottom rod part 1a. The bottom rod part 1a has a vertically opening 8 in the middle for the insertion of the top rod part 1b. The top rod part 1b is movably connected to the bottom rod part 1a. The bottom rod part 1a is provided with a positioning mechanism for fixing the position of the top rod part 1b.

[0049] The top rod part 1b is provided with several positioning posts 9 horizontally on its side, and the inner wall of the lifting port 8 is provided with a clearance opening 10 for the vertical movement of the positioning posts 9.

[0050] The positioning mechanism includes a positioning disk 11 rotatably connected to the top side of the bottom rod 1a. The positioning disk 11 has a positioning part 12 with a spiral cross-section on the side near the positioning post 9. The positioning part 12 can be engaged between any two adjacent positioning posts 9 at any position. An L-shaped rotating handle 13 is provided on the outer side of the positioning disk 11.

[0051] A lifting hole 14 is provided in the middle of the top rod part 1b, and the outer wall of the detection rod 4 is movably attached to the inner wall of the lifting hole 14.

[0052] A vertically extending movable hole 15 is provided on one side of the top rod 1b. A termination hole 16 and an operating hole 17 are vertically provided on both sides of the movable hole 15. There is a set height difference between the top and bottom of the lifting member 3 (that is, the lifting member 3 has a certain thickness, the specific size of which can be set according to actual needs, such as 2cm or 3cm or other values, without much restriction here; since both sides of the lifting member 3 are attached to the inner wall of the movable hole 15, it cannot swing, but can only move vertically). Both horizontal ends of the lifting member 3 are movably attached to the inner wall of the movable hole 15. A termination part 18 and an operating rod 19 are respectively provided at the horizontal ends of the lifting member 3. Both sides of the termination part 18 are movably attached to the inner walls of both sides of the termination hole 16, and both sides of the operating rod 19 are movably attached to the inner wall of the operating hole 17.

[0053] The linkage part 5 is movably located within the movable hole 15. An indicator part 20 is provided at one end of the outer side of the linkage part 5. A receiving groove 21 for the indicator part 20 to be raised and lowered is provided on the side of the bottom of the movable hole 15. The indicator grooves 7 are all located on the inner wall of the receiving groove 21.

[0054] A lever 22 is also horizontally provided on the side of the top rod 1b, and the lever 22 is located above the operating rod 19.

[0055] The top rod portion 1b has a storage groove 23 on its side. One end of the lever 22 is hinged to the inner wall of the bottom of the storage groove 23. The top of the storage groove 23 is provided with a positioning magnet 24 for fixing the other end of the lever 22. Rotating the lever 22 can make the lever 22 located in the storage groove 23, and the positioning magnet 24 is magnetically attracted to the top rod portion 1b.

[0056] The bottom of the inner side of the lifting component 3 is horizontally provided with a horizontal groove 25. One end of the operating rod 19 is hinged to the inner end of the horizontal groove 25. When the operating rod 19 is horizontal, the top of the operating rod 19 abuts against the inner wall of the horizontal groove 25. Rotating the operating rod 19 downwards allows the free end of the operating rod 19 to pass through the operating hole 17 and be located in the movable hole 15. When the operating rod 19 is located in the movable hole 15 and the lever 22 is located in the storage groove 23, both the lever 22 and the operating rod 19 can be moved into the inner bottom rod part 1a.

[0057] A spacing arm 26 is horizontally provided on the outer wall of the top rod 1b. A swing arm 27 is hinged to the top of the free end of the spacing arm 26. A vertical arm 28 is provided at the free end of the swing arm 27, which is perpendicular to the swing arm 27. The vertical arm 28 and the swing arm 27 form a T-shape. Both ends of the vertical arm 28 are rotatably provided with drag-reducing wheels 29. The top of the drag-reducing wheels 29 is higher than the top of the vertical arm 28.

[0058] The top of the spacing arm 26 is provided with two termination plates 30 facing each other. The two termination plates 30 are located on both sides of the hinge between the swing arm 27 and the spacing arm 26. The top of the detection rod 4 is hemispherical or has a drag-reducing ball rotatably provided.

[0059] The outer wall of the detection rod 4 is provided with an anti-detachment ring 31, which is higher than the top rod portion 1b.

[0060] This utility model provides a tarpaulin tension detection structure. When detecting the tension of the tarpaulin, firstly, one side of the tarpaulin is fixedly connected to the top of the frame. Then, the other side of the tarpaulin is pulled but not fixed yet. It is fixed after the test is passed. If it is not passed, the tension needs to be adjusted to pass before it is fixed.

[0061] During the inspection, the support rod 1 is first moved below the area of ​​the tarpaulin to be inspected, ensuring the top of the inspection rod 4 is against the bottom of the area, without any interaction between the inspection rod 4 and the tarpaulin. Then, the worker manually raises the lifting component 3 to a fixed height, such as 5cm, 10cm, or 15cm (the height can be selected according to actual needs). As the lifting component 3 rises, it simultaneously raises the linkage part 5 and the inspection rod 4 via the elastic component 6. After the inspection rod 4 stabilizes, the linkage part 5 is aligned with one of the indicator grooves 7. If the tarpaulin is too loosely tensioned, the height of the indicator groove 7 aligned with the linkage part 5 will be higher; conversely, if the tarpaulin is too tight, the height of the indicator groove 7 aligned with the linkage part 5 will be lower. The worker can then judge whether the tarpaulin tension is acceptable based on the height of the indicator groove 7 aligned with the linkage part 5. In practice, the acceptable tension of the tarpaulin is not an absolutely fixed value, but rather a range. For example, if the top of the linkage 5 aligns with the 5th to 7th indicator grooves 7 from bottom to top, it is considered acceptable; otherwise, it is unacceptable. Therefore, in practice, the tarpaulin tension does not necessarily have to reach a specific value to be considered acceptable. Furthermore, the required tension varies for tarpaulins of different widths and materials. Therefore, the range of indicator grooves 7 that the linkage 5 should align with is not fixed but needs to be adjusted according to actual needs.

[0062] Since the determination of tarpaulin tension in this application is not based on the worker's subjective judgment, the determination effect can be more accurate; secondly, the worker only needs to be below the tarpaulin to determine the tension, without having to climb to a high place to operate, thus making the operation safer and more convenient.

[0063] In actual operation, the bottom of the stabilizing rod 2 has a locking universal wheel, which allows the detection structure to be easily moved to the desired position (such as near the center of the frame, or between the center and both sides). Then, rotating the rotating handle 13 drives the positioning disk 11 to rotate, and the positioning part 12 acts on the positioning post 9, raising the positioning post 9 and the top rod part 1b. When rotating the positioning disk 11, the positioning part 12 continuously acts on the positioning post 9, preventing the top rod part 1b from sliding vertically downwards; and after stopping rotating the rotating handle 13, the top rod part 1b can maintain its position and not fall. At this time, the detection rod 4 is abutted against the top of the top rod part 1b by the anti-detachment ring 31, so the detection rod 4 and the top rod part 1b remain stationary.

[0064] In this embodiment, the top part of the canopy frame is an H-beam (as shown in the figure). After the two drag-reducing wheels 29 are aligned with the web of the H-beam (the H-beam includes the middle web and the two side flanges), the detection structure is moved until the spacing arm 26 touches the web. Then, the detection rod 4 is raised until both drag-reducing wheels 29 touch the bottom of the upper flange. At this point, the casters are locked, and the hemispherical part at the top of the detection rod 4 is just against the lower side of the canopy. Although the tension of the canopy is different at this point, the positions are relatively close, meaning it is not loose enough to fall downwards.

[0065] Then the worker rotates the lever 22 outward to keep it horizontal, and rotates the operating lever 19 outward so that the free end of the operating lever 19 passes through the operating hole 17 (where the elastic element 6 is elastic, so the worker can swing the operating lever 19 outward while driving the elastic element 6 to deform). At this time, the free ends of the operating lever 19 and the free ends of the lever 22 are located on the side of the top rod part 1b. Then the worker pinches the lever 22 and the operating lever 19 at the same time, so that the operating lever 19 can move upward, which also drives the lifting part 3 to move upward until the termination part 18 touches the top of the termination hole 16. At this time, the height of the lifting part 3 is fixed.

[0066] During the lifting process, the lifting component 3 is limited by the inner walls of the movable holes 15 on both sides, and the two sides of the termination part 18 are limited by the inner walls of the termination holes 16. The two sides of the operating handle are limited by the inner walls of the operating holes 17, thus ensuring that the lifting of the lifting component 3 can be carried out stably. Moreover, the lifting component 3 and the side walls of the detection rod 4 are preferably in a non-contact state. Thus, the lifting component 3 can only be raised through the elastic element 6, that is, there is no friction between the two, ensuring the stability of the detection. The detection rod 4 in this application is preferably made of a lightweight material and is hollow inside, which not only reduces the difficulty of operation, but also makes the detection accuracy higher. At the same time, the lifting component 3 drives the linkage part 5, the detection rod 4 and the indicator part 20 to move upward through the elastic element 6, and the indicator part 20 can be better aligned with the indicator groove 7, and assists the worker in judging which indicator groove 7 the linkage part 5 or the indicator part 20 is aligned with, making it simpler and more convenient to judge the tension of the tarpaulin.

[0067] After the test is completed, rotate the lever 22 upwards and fix its position with the positioning magnet 24; rotate the operating rod 19 downwards so that the free end of the operating rod 19 passes through the operating hole 17. Under the action of gravity, the operating rod 19 can be stably stored in the movable hole 15. At this time, the entire top rod 1b, lever 22, bottom part of the detection rod 4, and operating rod 19 can all be accommodated in the lifting port 8, which facilitates the movement and transfer of the entire testing structure. The cross-sections of the top rod 1b and the detection rod 4 are both rectangular, which ensures the angular stability of the detection rod 4, the top rod 1b, and the bottom rod 1a. At the same time, the top of the detection rod 4 is hemispherical or has a rotating spherical drag-reducing ball, which allows for better relative movement between the detection rod 4 and the tarpaulin during the test, thus improving the accuracy of the test.

[0068] Not all the H-beams on the top of the frame are horizontal. To better drain rainwater, many frames are downward-curved. Therefore, the swing arm 27 and the spacing arm 26 are hinged, so even if the frame is tilted, the two drag-reducing wheels 29 can still effectively abut against the underside of the upper wing plate. Furthermore, there are two stop plates 30 on both sides of the swing arm 27, ensuring that the vertical arm 28 remains nearly horizontal even in standby mode, without rotating to a vertical or near-vertical position, thus facilitating use.

[0069] Furthermore, since the length of the spacing arm 26 is fixed, when the free end of the spacing arm 26 abuts against the web of the H-beam, the distance between the tarpaulin being tested and the outer side of the frame is relatively fixed or close, preventing the detection from being inaccurate due to excessive positional deviation.

[0070] In another embodiment, the positioning mechanism includes a positioning screw that is horizontally threaded to the top of the bottom rod 1a. The inner end of the positioning screw abuts against the outer wall of the top rod 1b, and the outer end of the positioning screw is provided with an operating handle perpendicular to the positioning screw. At this time, the outer wall of the top rod 1b is movably fitted against the inner wall of the lifting port 8. After the height of the top rod 1b is adjusted (manually) to a suitable level, rotating the operating handle will cause the positioning screw to abut against the outer wall of the top rod 1b, thus fixing the position of the top rod 1b. After that, testing can be performed.

[0071] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0072] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A tarpaulin tension detection structure, characterized in that, Include: Support vertical pole (1), the bottom periphery of support vertical pole (1) is horizontally provided with several stabilizing bars (2); Lifting piece (3), lifting piece (3) is vertically connected to support vertical pole (1); Detection rod (4), detection rod (4) is vertically connected to support vertical pole (1), and the top of detection rod (4) is higher than the top of support vertical pole (1), and the side of detection rod (4) is fixedly provided with linkage (5); The vertical elastic member (6) is vertically connected to the lifting piece (3), and the bottom of the elastic member (6) is connected to the linkage (5), and the side of the support vertical pole (1) is horizontally provided with several vertical distribution indicating grooves (7), and the linkage (5) can be moved to any indicating groove (7).

2. The tarp tension detection structure of claim 1, wherein The support vertical pole (1) includes a bottom rod part (1a) and a top rod part (1b), the stabilizing bars (2) are connected to the bottom rod part (1a), the middle part of the bottom rod part (1a) is vertically provided with a lifting opening (8) for inserting the top rod part (1b), and the top rod part (1b) is movably connected to the bottom rod part (1a), and the bottom rod part (1a) is provided with a positioning mechanism for fixing the position of the top rod part (1b).

3. The tarp tension detection structure of claim 2, wherein The side of the top rod part (1b) is horizontally provided with several positioning columns (9), and the inner wall of the lifting opening (8) is provided with a clearance opening (10) for the vertical movement of the positioning column (9); The positioning mechanism includes a positioning disc (11) rotatably connected to the top side of the bottom rod part (1a), one side of the positioning disc (11) is provided with a positioning part (12) with a spiral line-shaped longitudinal section, any position of the positioning part (12) can be engaged between any two adjacent positioning columns (9), and the outer side of the positioning disc (11) is provided with an L-shaped rotating handle (13).

4. The tarp tension detection structure of claim 2, wherein The positioning mechanism includes a positioning screw horizontally and threadedly connected to the top of the bottom rod part (1a), the inner end of the positioning screw abuts against the outer wall of the top rod part (1b), and the outer end of the positioning screw is provided with an operating handle perpendicular to the positioning screw.

5. The tarpaulin tension detection structure according to claim 3 or 4, characterized by A lifting hole (14) vertically penetrating the middle part of the top rod part (1b) is formed, and the outer wall of the detection rod (4) is movably attached to the inner wall of the lifting hole (14); One side of the top rod part (1b) is vertically provided with a movable hole (15) penetrating the top rod part (1b), and the two sides of the movable hole (15) are vertically provided with a termination hole (16) and an operating hole (17), respectively, the top and bottom of the lifting piece (3) have a set height difference, the horizontal two ends of the lifting piece (3) are movably attached to the inner wall of the movable hole (15), the horizontal two ends of the lifting piece (3) are provided with a termination part (18) and an operating rod (19), respectively, the two sides of the termination part (18) are movably attached to the inner walls of the two sides of the termination hole (16), and the two sides of the operating rod (19) are movably attached to the inner walls of the operating hole (17). The linkage part (5) is movably arranged in the movable hole (15), one end of the linkage part (5) is provided with an indicating part (20), the side of the bottom of the movable hole (15) is provided with a containing groove (21) for lifting the indicating part (20), and the indicating grooves (7) are arranged on the inner wall of the containing groove (21).

6. The tarp tension detection structure of claim 5, wherein The side of the top rod part (1b) is further horizontally provided with a leverage (22), and the leverage (22) is located above the operating rod (19).

7. The tarpaulin tension detection structure according to claim 6, wherein The side of the top rod part (1b) is provided with a receiving groove (23), one end of the leverage (22) is hinged to the inner wall of the bottom of the receiving groove (23), the top of the receiving groove (23) is provided with a positioning magnet (24) for fixing the other end of the leverage (22), the leverage (22) can be located in the receiving groove (23) by rotating the leverage (22), and the positioning magnet (24) is magnetically attracted to the top rod part (1b). The bottom of the inner side of the lifting piece (3) is horizontally provided with a horizontal groove (25), one end of the operating rod (19) is hinged to the inner end of the horizontal groove (25), when the operating rod (19) is in a horizontal state, the top of the operating rod (19) abuts against the inner wall of the horizontal groove (25), the free end of the operating rod (19) can be located in the movable hole (15) by downward rotating the operating rod (19) after passing through the operating hole (17), and when the operating rod (19) is located in the movable hole (15) and the leverage (22) is located in the receiving groove (23), the leverage (22) and the operating rod (19) can be movably arranged in the bottom rod part (1a).

8. The tarp tension detection structure of claim 2, wherein The outer wall of the top rod part (1b) is horizontally provided with a spacing arm (26), the top of the free end of the spacing arm (26) is hingedly provided with a swing arm (27), the free end of the swing arm (27) is provided with a vertical arm (28) perpendicular to the swing arm (27), the vertical arm (28) and the swing arm (27) form a T shape, both ends of the vertical arm (28) are rotatably provided with a drag-reducing wheel (29), and the top of the drag-reducing wheel (29) is higher than the top of the vertical arm (28).

9. The tarpaulin tension detection structure according to claim 8, wherein The top of the spacing arm (26) is oppositely provided with two terminal plates (30), the two terminal plates (30) are located on both sides of the hinge between the swing arm (27) and the spacing arm (26), and the top of the detection rod (4) is hemispherical or rotatably provided with a drag-reducing ball.

10. The tarp tension detection structure of claim 5, wherein, The outer wall of the detection rod (4) is provided with an anti-disengagement ring (31), and the anti-disengagement ring (31) is higher than the top rod part (1b).

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