Anti-spilling device for earthwork transportation

Abstract

The utility model discloses an earthwork transportation anti-spilling device, which comprises a mounting frame and a positioning frame, a rolling rod is rotatably arranged in the mounting frame, tarpaulin is wound on the rolling rod, one end of the tarpaulin far away from the rolling rod is fixedly provided with a clamping rod, the rolling rod is sleeved with two groups of symmetrically distributed coil springs, and the two groups of coil springs are fixedly connected with the clamping rod. The inner ends and the outer ends of the two sets of coil springs are fixedly connected with the winding rod and the mounting frame respectively, the winding rod is sleeved with two sets of ratchet wheels which are symmetrically distributed, and two sets of pawls corresponding to the ratchet wheels are arranged in the mounting frame. Meanwhile, after the tarpaulin is unfolded and covered in place, the arranged ratchet and pawl structure can effectively prevent the rolling rod from rotating reversely and rolling back under the action of the coil spring, the tarpaulin is prevented from being loosened or retracted accidentally, and meanwhile the clamping rod at the front end of the tarpaulin is firmly locked on the mounting frame by operating the clamping frame and the inserting rod.

Description

Technical Field

[0001] This utility model relates to the field of earthwork transportation technology, specifically to an earthwork transportation spill prevention device. Background Technology

[0002] Earthwork is a general term for earth and stone work, which is earth and stone. The unit of measurement is usually cubic meters (m³). Earthwork engineering includes all aspects of earth (stone) excavation, filling, transportation, drainage, and dewatering. Earthwork transportation is an important part of the construction engineering field, mainly involving site leveling, foundation pit (trench) and pipe trench excavation, roadbed excavation and filling, and other operations.

[0003] In the earthmoving and rock transportation industry, in order to prevent materials from spilling and polluting the road surface, it is generally required that transport vehicles be covered with tarpaulins throughout the entire journey. Workers need to climb to the top of the truck bed, manually unfold the heavy tarpaulin, and temporarily fix the tarpaulin to the edge of the truck bed with hooks, ropes, or pressure bars. The operation process is complicated and time-consuming. Moreover, during the transportation process, the bumps of the vehicle cause the tarpaulin to shake frequently, causing the fixing points to loosen and fall off, ultimately resulting in the spillage of transported materials. Utility Model Content

[0004] The purpose of this utility model is to provide a device for preventing spillage during earthwork transportation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spill prevention device for earth and stone transportation, comprising an installation frame and a positioning frame. A winding rod is rotatably installed inside the installation frame, and a tarpaulin is wound around the winding rod. A clamp is fixedly installed at the end of the tarpaulin away from the winding rod. Two sets of symmetrically distributed disc springs are sleeved on the winding rod, and the inner and outer ends of the two sets of disc springs are respectively fixedly connected to the winding rod and the installation frame. Two sets of symmetrically distributed ratchet wheels are sleeved on the winding rod, and two sets of ratchet wheels corresponding to the ratchet wheels are provided inside the installation frame. The pawls consist of two sets of pawls that are respectively engaged with corresponding ratchet wheels. Both sets of pawls are rotatably connected to the mounting frame via rotating rods. Two sets of symmetrically distributed clips are slidably installed inside the mounting frame. Insert rods are fixedly installed on both sets of clips, and the two sets of insert rods are movably engaged with clip rods. Two sets of symmetrically distributed fixing rods are fixedly installed on the mounting frame. A first lifting rod is slidably installed inside the fixing rod, and a second lifting rod is slidably installed inside the first lifting rod. The end of the second lifting rod away from the fixing rod is fixedly connected to the positioning frame.

[0006] As a further preferred embodiment of this technical solution, a first torsion spring is sleeved on each of the two sets of rotating rods. The two ends of the first torsion spring are respectively fixedly connected to the corresponding pawl and the mounting frame. A first gear is sleeved on each of the two sets of rotating rods. Two sets of first racks corresponding to the two sets of pawls are slidably installed in the mounting frame. The two sets of first racks are respectively meshed with the corresponding first gears.

[0007] As a further preferred embodiment of this technical solution, a movable frame is slidably installed within the mounting frame. The movable frame is fixedly connected to two sets of first racks. A positioning block is fixedly installed on the movable frame. A positioning rod corresponding to the positioning block is fixedly installed within the mounting frame. Two sets of symmetrically distributed positioning frames are sleeved on the positioning rod. The two sets of positioning frames are movably engaged with the corresponding positioning blocks. Two sets of symmetrically distributed second torsion springs are sleeved on the positioning rod. The two ends of the second torsion springs are fixedly connected to the corresponding positioning frame and the positioning rod, respectively.

[0008] As a further preferred embodiment of this technical solution, a first spring is movably sleeved on each of the two sets of insert rods. The two ends of the first spring are fixedly connected to the insert rod and the mounting frame, respectively. A second rack is fixedly installed on each of the two sets of card holders. A second gear is provided between the two sets of second racks. The second gear is meshed with the two sets of second racks, respectively. The second gear is rotatably connected to the mounting frame through a handle. Two sets of sliding rods corresponding to the second racks are fixedly installed inside the mounting frame.

[0009] As a further preferred embodiment of this technical solution, a third torsion spring is sleeved on the handle, and the two ends of the third torsion spring are respectively fixedly connected to the second gear and the mounting frame. The second rack is slidably sleeved with the corresponding slide rod, and two sets of symmetrically distributed second springs are sleeved on the slide rod. The two ends of the second springs are respectively fixedly connected to the second rack and the mounting frame.

[0010] As a further preferred embodiment of this technical solution, a screw is rotatably installed inside the fixed rod, the upper end of the screw passes through the first lifting rod and is threadedly connected to the first lifting rod, a screw tube is rotatably installed inside the first lifting rod, and the upper end of the screw tube passes through the second lifting rod and is threadedly connected to the second lifting rod.

[0011] As a further preferred embodiment of this technical solution, the screw is provided with two sets of symmetrically distributed limiting grooves, and the spiral tube is provided with two sets of symmetrically distributed limiting blocks. The limiting blocks are correspondingly arranged with the limiting grooves, and the spiral tube is slidably sleeved with the limiting blocks and limiting grooves.

[0012] This utility model provides a spill prevention device for earthwork transportation, which has the following beneficial effects:

[0013] (1) This utility model realizes the “one-click” covering and locking of tarpaulin. Compared with the cumbersome fixing methods such as traditional hooks, ropes or pressure bars, it significantly shortens the time required to cover the tarpaulin and improves the transportation turnover efficiency. At the same time, after the tarpaulin is unfolded and covered in place, the ratchet and pawl structure can effectively prevent the winding rod from reversing and rewinding under the action of the coil spring, preventing the tarpaulin from accidentally loosening or shrinking. At the same time, by operating the card holder and the insertion rod, the card rod at the front end of the tarpaulin is firmly locked on the installation frame. This rigid locking method is more reliable and less prone to loosening than traditional rope binding or hook attachment. During use, the dual locking mechanism works together to effectively overcome the loosening that may be caused by the high-frequency shaking of the tarpaulin under bumpy road conditions. It reduces the risk of the tarpaulin failing due to shaking (such as hooks coming off, ropes coming loose, and pressure rods shifting), thereby preventing material spillage during transportation. Furthermore, with the continuous torque provided by the built-in disc spring, when the locking of the insert rod to the locking rod and the restriction of the ratchet pawl on the winding rod are released, the disc spring can automatically drive the winding rod to rotate, quickly and effortlessly retracting the tarpaulin roll, further simplifying the operation process.

[0014] (2) The telescopic lifting rod structure of this utility model, including the fixed rod, the first lifting rod, the second lifting rod, the screw, and the screw tube, allows for convenient adjustment of the height of the positioning frame relative to the mounting frame. This enables the device to flexibly adapt to transport carriages of different heights or different stacking heights, ensuring that the tarpaulin can effectively cover the material on the top of the carriage before pressing the positioning frame onto the tarpaulin, further strengthening the anti-spillage protection of the tarpaulin, while reducing the gaps that may exist between the tarpaulin and the material that could lead to leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the structural separation of the mounting frame and the tarpaulin of this utility model;

[0017] Figure 3 This is a schematic diagram showing the separation of the ratchet and pawl in this utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A;

[0019] Figure 5 This is a schematic diagram of the card holder structure of this utility model;

[0020] Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point -B;

[0021] Figure 7 This is a schematic diagram of the positioning frame of this utility model;

[0022] Figure 8 For the present utility model Figure 7 Enlarged view of the structure at point C;

[0023] In the diagram: 1. Mounting frame; 2. Rewinding rod; 3. Coil spring; 4. Canopy; 5. Ratchet; 6. Pad; 7. Rotating rod; 8. First torsion spring; 9. First gear; 10. First rack; 11. Moving frame; 12. Positioning block; 13. Positioning rod; 14. Positioning frame; 15. Second torsion spring; 16. Locking rod; 17. Locking bracket; 18. Inserting rod; 19. First spring; 20. Second rack; 21. Second gear; 22. Handle; 23. Third torsion spring; 24. Slide rod; 25. Second spring; 26. Positioning frame; 27. Fixing rod; 28. First lifting rod; 29. ​​Second lifting rod; 30. Screw; 31. Limiting groove; 32. Screw tube; 33. Limiting block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] This utility model provides a technical solution: such as Figures 1-6As shown, this embodiment includes an installation frame 1 and a positioning frame 26. A winding rod 2 is rotatably installed inside the installation frame 1. A tarpaulin 4 is wound around the winding rod 2. A locking rod 16 is fixedly installed at the end of the tarpaulin 4 away from the winding rod 2. Two sets of symmetrically distributed disc springs 3 are sleeved on the winding rod 2. The inner and outer ends of the two sets of disc springs 3 are fixedly connected to the winding rod 2 and the installation frame 1, respectively. Two sets of symmetrically distributed ratchet wheels 5 are sleeved on the winding rod 2. Two sets of pawls 6, corresponding to the ratchet wheels 5, are provided inside the installation frame 1. The two sets of pawls 6 are respectively engaged with the corresponding ratchet wheels 5. Both sets of pawls 6 are rotatably connected to the installation frame 1 through a rotating rod 7. Two sets of symmetrically distributed locking brackets 17 are slidably installed inside the installation frame 1. Insert rods 18 are fixedly installed on both sets of locking brackets 17. The two sets of insert rods 18 are respectively engaged with the locking brackets 16. The rod 16 is movably latched. Two sets of symmetrically distributed fixed rods 27 are fixedly installed on the mounting frame 1. A first lifting rod 28 is slidably installed inside the fixed rod 27, and a second lifting rod 29 is slidably installed inside the first lifting rod 28. The end of the second lifting rod 29 away from the fixed rod 27 is fixedly connected to the positioning frame 26. A first torsion spring 8 is sleeved on each of the two sets of rotating rods 7. The two ends of the first torsion spring 8 are fixedly connected to the corresponding pawl 6 and the mounting frame 1, respectively. A first gear 9 is sleeved on each of the two sets of rotating rods 7. Two sets of first racks 10, corresponding to the two sets of pawls 6, are slidably installed in the mounting frame 1. The two sets of first racks 10 are respectively meshed with the corresponding first gears 9. A movable frame 11 is slidably installed in the mounting frame 1. The movable frame 11 is fixedly connected to the two sets of first racks 10, respectively. Next, a positioning block 12 is fixedly installed on the movable frame 11, and a positioning rod 13 corresponding to the positioning block 12 is fixedly installed inside the mounting frame 1. Two sets of symmetrically distributed positioning frames 14 are sleeved on the positioning rod 13, and the two sets of positioning frames 14 are movably engaged with the corresponding positioning block 12. Two sets of symmetrically distributed second torsion springs 15 are sleeved on the positioning rod 13, and the two ends of the second torsion springs 15 are fixedly connected to the corresponding positioning frame 14 and the positioning rod 13, respectively. A first spring 19 is movably sleeved on each of the two sets of insertion rods 18, and the two ends of the first spring 19 are fixedly connected to the insertion rod 18 and the mounting frame 1, respectively. A second rack 20 is fixedly installed on each of the two sets of clamping frames 17, and a second gear 21 is provided between the two sets of second racks 20. The second gear 21 meshes with the two sets of second racks 20, respectively. The second gear 21 is rotatably connected to the mounting frame 1 via the handle 22. Two sets of sliding rods 24, corresponding to the second rack 20, are fixedly installed inside the mounting frame 1. A third torsion spring 23 is sleeved on the handle 22, with both ends fixedly connected to the second gear 21 and the mounting frame 1, respectively. The second rack 20 is slidably engaged with the corresponding sliding rod 24. Two sets of symmetrically distributed second springs 25 are sleeved on the sliding rod 24, with both ends fixedly connected to the second rack 20 and the mounting frame 1, respectively. When covering the tarpaulin 4, pulling the movable frame 11 causes the two sets of first racks 10 to slide, cooperating with the first gear 9 to cause the two sets of rotating rods 7 to rotate the pawl 6, disengaging it from the corresponding ratchet 5, thus releasing the positional constraint of the pawl 6 and ratchet 5 on the winding rod 2.By inserting the positioning block 12 between the two sets of positioning frames 14, the position of the movable frame 11 is limited under the action of the second torsion spring 15, making it convenient for workers to pull the tarpaulin 4 out of the mounting frame 1 and cover the materials piled on the carriage. Turning the handle 22 drives the second gear 21 to rotate, which, in conjunction with the two sets of second racks 20, causes the two sets of clamping frames 17 to drive the corresponding insert rods 18 to move synchronously in opposite directions, clamping the end clamping rod 16 of the tarpaulin 4 into the mounting frame 1. After releasing the handle 22, the two sets of insert rods 18 move synchronously inward under the action of the first spring 19, the second spring 25, and the third torsion spring 23. The tarpaulin 4 slides and engages with the locking lever 16, securing the lever 16 and the end of the tarpaulin 4. Under the continuous torque of the coil spring 3, the tarpaulin 4 remains taut over the material, preventing it from becoming loose and affecting its protective effect. After unfolding the tarpaulin 4, the moving frame 11 is pulled in the opposite direction, releasing the positioning frame 14 from its limiting effect on the positioning block 12 and the moving frame 11. Under the action of the first torsion spring 8, the two sets of pawls 6 return to their original engagement with the ratchet 5, preventing the winding lever 2 from rotating during transport and ensuring a good covering condition for the tarpaulin 4.

[0026] like Figure 7 and Figure 8 As shown, a screw 30 is rotatably installed inside the fixed rod 27. The upper end of the screw 30 passes through the first lifting rod 28 and is threadedly connected to the first lifting rod 28. A screw tube 32 is rotatably installed inside the first lifting rod 28. The upper end of the screw tube 32 passes through the second lifting rod 29 and is threadedly connected to the second lifting rod 29. Two sets of symmetrically distributed limiting grooves 31 are provided on the screw 30. Two sets of symmetrically distributed limiting blocks 33 are provided inside the screw tube 32. The limiting blocks 33 are correspondingly set with the limiting grooves 31. The screw tube 32 slides through the limiting blocks 33 and the limiting grooves 31. The moving sleeve is connected. The motor in the fixed rod 27 drives the screw 30 to rotate. Under the limiting action of the fixed rod 27, the first lifting rod 28 drives the screw tube 32 to slide in the fixed rod 27. Under the limiting action of the limiting groove 31 and the limiting block 33, the screw tube 32 rotates synchronously with the screw 30, causing the second lifting rod 29 to slide in the first lifting rod 28, thereby driving the positioning frame 26 to slide. According to the actual stacking height, the positioning frame 26 is pressed on the tarpaulin 4 to ensure the position of the tarpaulin 4 and reduce the possible gaps between the tarpaulin 4 and the carriage.

[0027] This utility model provides a spill prevention device for earthwork transportation. The specific working principle is as follows: When covering the tarpaulin 4, pulling the movable frame 11 drives the two sets of first racks 10 to slide. This, in conjunction with the first gear 9, causes the two sets of rotating rods 7 to rotate the pawls 6, disengaging them from the corresponding ratchet 5. This releases the pawls 6 and ratchet 5 from limiting the position of the winding rod 2. Furthermore, by inserting the positioning block 12 between the two sets of positioning frames 14, the position of the movable frame 11 is limited under the action of the second torsion spring 15, facilitating the worker to pull the tarpaulin 4 out of the mounting frame 1 and cover the materials piled on the truck bed. Turning the handle 22 drives the second gear 21 to rotate, which, in conjunction with the two sets of second racks 20, causes the two sets of clamping frames 17 to move the corresponding insert rods 18 synchronously in the opposite direction, locking the end clamp rod 16 of the tarpaulin 4 into the mounting frame 1. After releasing the handle 22, under the action of the first spring 19, the second spring 25, and the third torsion spring 23, the two sets of insert rods 18 slide inward synchronously and engage with the clamp rod 16, completing the fixation of the clamp rod 16 and the end of the tarpaulin 4. Under the continuous torque of spring 3, the tarpaulin 4 is kept taut on the material, preventing it from becoming loose and affecting its covering and protection effect. After the tarpaulin 4 is unfolded and covered, the moving frame 11 is pulled in the opposite direction to release the positioning frame 14 from limiting the positioning block 12 and the moving frame 11. Under the action of the first torsion spring 8, the two sets of pawls 6 return to their original engagement with the ratchet 5, preventing the winding rod 2 from rotating during transportation and ensuring a good covering state for the tarpaulin 4. The motor drives the screw 30 to rotate. Under the limiting action of the fixed rod 27, the first lifting rod 28 drives the screw tube 32 to slide in the fixed rod 27. Under the limiting action of the limiting groove 31 and the limiting block 33, the screw tube 32 rotates synchronously with the screw 30, causing the second lifting rod 29 to slide in the first lifting rod 28, thereby driving the positioning frame 26 to slide. According to the actual stacking height, the positioning frame 26 is pressed on the tarpaulin 4 to ensure the position of the tarpaulin 4 and reduce the possible gaps between the tarpaulin 4 and the carriage.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil and stone transportation anti-spilling device, comprising a mounting frame (1) and a positioning frame (26), characterized in that: A winding rod (2) is rotatably mounted inside the mounting frame (1). A tarpaulin (4) is wound around the winding rod (2). A clamp (16) is fixedly mounted on the end of the tarpaulin (4) away from the winding rod (2). Two sets of symmetrically distributed disc springs (3) are sleeved on the winding rod (2). The inner and outer ends of the two sets of disc springs (3) are fixedly connected to the winding rod (2) and the mounting frame (1) respectively. Two sets of symmetrically distributed ratchet wheels (5) are sleeved on the winding rod (2). Two sets of pawls (6) corresponding to the ratchet wheels (5) are provided inside the mounting frame (1). The two sets of pawls (6) are respectively engaged with the corresponding ratchet wheels (5). (6) All are rotatably connected to the mounting frame (1) via rotating rods (7). Two sets of symmetrically distributed card holders (17) are slidably installed in the mounting frame (1). Insert rods (18) are fixedly installed on both sets of card holders (17). The two sets of insert rods (18) are movably engaged with the card rods (16). Two sets of symmetrically distributed fixing rods (27) are fixedly installed on the mounting frame (1). A first lifting rod (28) is slidably installed in the fixing rod (27). A second lifting rod (29) is slidably installed in the first lifting rod (28). The end of the second lifting rod (29) away from the fixing rod (27) is fixedly connected to the positioning frame (26).

2. The soil and stone transportation anti-spilling device according to claim 1, characterized in that: Both sets of rotating rods (7) are fitted with first torsion springs (8), and the two ends of the first torsion springs (8) are fixedly connected to the corresponding pawls (6) and the mounting frame (1) respectively. Both sets of rotating rods (7) are fitted with first gears (9), and two sets of first racks (10) corresponding to the two sets of pawls (6) are slidably installed in the mounting frame (1). The two sets of first racks (10) are respectively meshed with the corresponding first gears (9).

3. The soil and stone transportation anti-spilling device according to claim 1, characterized in that: A movable frame (11) is slidably installed inside the mounting frame (1). The movable frame (11) is fixedly connected to two sets of first racks (10). A positioning block (12) is fixedly installed on the movable frame (11). A positioning rod (13) corresponding to the positioning block (12) is fixedly installed inside the mounting frame (1). Two sets of symmetrically distributed positioning frames (14) are sleeved on the positioning rod (13). The two sets of positioning frames (14) are movably engaged with the corresponding positioning blocks (12). Two sets of symmetrically distributed second torsion springs (15) are sleeved on the positioning rod (13). The two ends of the second torsion springs (15) are fixedly connected to the corresponding positioning frames (14) and the positioning rods (13) respectively.

4. The soil and stone transportation anti-spilling device according to claim 1, characterized in that: Both sets of the insert rods (18) are movably sleeved with a first spring (19). The two ends of the first spring (19) are fixedly connected to the insert rod (18) and the mounting frame (1), respectively. Both sets of the clips (17) are fixedly installed with a second rack (20). A second gear (21) is provided between the two sets of second racks (20). The second gear (21) is meshed with the two sets of second racks (20), respectively. The second gear (21) is rotatably connected to the mounting frame (1) through a handle (22). Two sets of slide rods (24) corresponding to the second racks (20) are fixedly installed in the mounting frame (1).

5. The soil and stone transportation anti-spilling device according to claim 4, characterized in that: A third torsion spring (23) is sleeved on the handle (22). The two ends of the third torsion spring (23) are fixedly connected to the second gear (21) and the mounting frame (1) respectively. The second rack (20) is slidably sleeved with the corresponding slide rod (24). Two sets of symmetrically distributed second springs (25) are sleeved on the slide rod (24). The two ends of the second springs (25) are fixedly connected to the second rack (20) and the mounting frame (1) respectively.

6. The soil and stone transportation anti-spilling device according to claim 1, characterized in that: A screw (30) is rotatably installed inside the fixed rod (27). The upper end of the screw (30) passes through the first lifting rod (28) and is threadedly connected to the first lifting rod (28). A screw tube (32) is rotatably installed inside the first lifting rod (28). The upper end of the screw tube (32) passes through the second lifting rod (29) and is threadedly connected to the second lifting rod (29).

7. The soil and stone transportation anti-spilling device according to claim 6, characterized in that: The screw (30) has two sets of symmetrically distributed limiting grooves (31), and the screw tube (32) has two sets of symmetrically distributed limiting blocks (33). The limiting blocks (33) are correspondingly arranged with the limiting grooves (31), and the screw tube (32) is slidably sleeved with the screw tube (32) through the limiting blocks (33) and the limiting grooves (31).

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