A maintenance film coating device for highway construction
By designing an adjustable-width film covering device, the problem of requiring two construction processes for road surface film covering was solved, achieving a highly efficient film covering effect for a single road surface coverage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGYANG TRANSPORTATION INVESTMENT & CONSTRUCTION GROUP CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
In road cladding construction, the fixed width of a single film roll means that some road surfaces need to be clad twice, which affects construction efficiency.
A maintenance film covering device for highway construction was designed. The width of the film roll can be adjusted by a combination of diagonal braces and pressure rollers. Combined with the support of trusses and traveling wheels, the device can be moved and the film covering operation can be carried out easily.
This technology enables a single application of film to cover the road surface, improving construction efficiency and reducing construction steps.
Smart Images

Figure CN224531411U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of highway mulching technology, specifically a maintenance mulching device for highway construction. Background Technology
[0002] Road surface cladding is a curing method that involves covering concrete structures or components with a protective film. This refers to laying a concrete curing film after the initial setting and before the final setting of the concrete. The film adheres tightly to the concrete surface, promoting hydration and playing a significant role in crack prevention and moisture retention during the curing process.
[0003] In the process of road surface mulching construction, the width of a single film roll is fixed. For some road surface mulching construction that is more than one film width but less than two film widths, it is necessary to mulch twice to cover the entire road surface, which affects the construction efficiency. Therefore, a new maintenance mulching device for highway construction is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a maintenance mulching device for highway construction to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A maintenance mulching device for highway construction includes a first guide sleeve. First extension rods are slidably connected to both ends of the first guide sleeve. Diagonal tie rods are fixedly connected to the ends of the first extension rods. Support rods are fixedly connected to the diagonal tie rods. Film roll placement frames are installed between the support rods and between the diagonal tie rods in front of the support rods. Film rolls are installed on each film roll placement frame. The placement frames between the support rods and the placement frames on the diagonal tie rods are arranged in opposite directions. Pressure rollers are provided between the bottom ends of the diagonal tie rods. Connecting discs are provided on the outer sides of both ends of the pressure rollers. The connecting discs are rotatably connected to the diagonal tie rods, and rotatably pass through the connecting discs. A threaded rod is connected to a rotating head at one end, and the other end of the threaded rod is inserted into the pressure roller and threadedly connected to the pressure roller. Slide bars are fixedly connected to the circumference of each connecting plate. The slide bars on the two connecting plates are staggered. The pressure roller has a groove that corresponds to and matches the slide bar. The slide bar is inserted into the groove and slidably connected. Both ends of the first guide sleeve are threaded with a first locking bolt. The first locking bolt is inserted into the first guide sleeve and tightly connected to the first extension rod. The film roll placement frame includes a film roll threading roller and an extension connecting rod. The film roll is sleeved on the outside of the film roll threading roller, and the extension connecting rod is inserted into the film roll threading roller and slidably connected.
[0007] As a further embodiment of this utility model: a first end plate is fixedly connected to the end of the film roll threading roller away from the extension connecting rod, an adjusting sleeve is slidably sleeved on the extension connecting rod, a second end plate corresponding to the first end plate is fixedly connected to the adjusting sleeve, the film roll is disposed between the first end plate and the second end plate, a second locking bolt is threadedly connected to the adjusting sleeve, the second locking bolt is inserted into the adjusting sleeve and is tightly fitted with the extension connecting rod.
[0008] As a further embodiment of this utility model: the first end plate is rotatably connected to the hinge seat, the extension connecting rod is fixedly connected to the mounting seat, the hinge seat is hingedly installed with the corresponding tie rod and support rod, and the mounting seat is fixedly installed with the corresponding tie rod and support rod by fixing bolts.
[0009] As a further embodiment of this utility model: the first guide sleeve is hinged to the truss, a traveling wheel is rotatably installed at the bottom of the truss, and a traction connection seat is provided on the truss.
[0010] As a further embodiment of this utility model: a hanger is fixedly connected to the top surface of the truss, and a chain is installed at the end of the hanger by mounting bolts, with a second guide sleeve suspended at the end of the chain.
[0011] As a further embodiment of this utility model: the ends of the second guide sleeve are slidably connected with second extension rods, and the two ends of the second guide sleeve are symmetrically threaded with third locking bolts. The third locking bolts are inserted into the second guide sleeve and tightly connected to the second extension rods. The ends of the second extension rods are fixedly connected with plumb rods, and the plumb rods are rotatably connected to the diagonal tie rods.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The spacing of the inclined tie rod of this utility model can be adjusted along with the movement of the first extension rod, and the pressure roller and connecting plate can be adjusted by rotating the threaded rod. This controls the total length of the slide bar and the pressure roller, making it convenient to control the width of the film. The film roll is threaded through the film roll threading roller, and with the cooperation of the film roll threading roller and the extension connecting rod, the film roll placement frame can be adjusted along with the adjustment of the inclined tie rod, thus forming a double unwinding setup. When rewinding, the middle film overlaps, and the total effective width of the two film rolls is adapted to the road surface, so that the road surface can be completely covered with a single film covering.
[0014] 2. This utility model uses a truss and traveling wheels to form a support, and a hanger and chain to suspend the second guide sleeve. Furthermore, the tail end of the diagonal tie rod is suspended by the second extension rod and the vertical rod, which makes it convenient to lift the pressure roller when the device is not in use, and facilitates the movement of the device with the traction equipment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a maintenance and mulching device for highway construction.
[0016] Figure 2 This is a partial three-dimensional view of a maintenance mulching device for highway construction.
[0017] Figure 3 This is a cross-sectional view of the pressure roller in a maintenance and mulching device for highway construction.
[0018] Figure 4 This is a cross-sectional view of a membrane roll placement frame in a maintenance and mulching device for highway construction.
[0019] In the diagram: 1. First guide sleeve; 2. First extension rod; 3. Diagonal tie rod; 4. Support rod; 5. Film roll placement rack; 6. Pressure roller; 7. Connecting disc; 8. Threaded rod; 9. Rotating head; 10. Sliding bar; 11. Slide groove; 12. First locking bolt; 13. Film roll threading roller; 14. Extension connecting rod; 15. First end plate; 16. Adjusting sleeve; 17. Second end plate; 18. Second locking bolt; 19. Hinge seat; 20. Mounting seat; 21. Truss; 22. Traveling wheel; 23. Traction connecting seat; 24. Hanger; 25. Mounting bolt; 26. Chain; 27. Second guide sleeve; 28. Second extension rod; 29. Third locking bolt; 30. Vertical rod. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-4In this embodiment of the present invention, a maintenance mulching device for highway construction includes a first guide sleeve 1. Both ends of the first guide sleeve 1 are slidably connected to first extension rods 2. The ends of the first extension rods 2 are fixedly connected to inclined tie rods 3. Support rods 4 are fixedly connected to the inclined tie rods 3. Film roll placement racks 5 are installed between the support rods 4 and between the inclined tie rods 3 in front of the support rods 4. Film rolls are installed on the film roll placement racks 5. The film roll placement racks 5 between the support rods 4 are arranged in the opposite direction to those on the inclined tie rods 3. Pressure rollers 6 are provided between the bottom ends of the inclined tie rods 3. Connecting discs 7 are provided on the outer sides of both ends of the pressure rollers 6. The connecting discs 7 are rotatably connected to the inclined tie rods 3, and threaded connections are rotatably threaded through the connecting discs 7. One end of the threaded rod 8 is fixedly connected to a rotating head 9, and the other end of the threaded rod 8 is inserted into the pressure roller 6 and threadedly connected to the pressure roller 6. Each connecting plate 7 is circumferentially fixedly connected to a slide bar 10. The slide bars 10 on the two connecting plates 7 are staggered. The pressure roller 6 is provided with a slide groove 11 that corresponds to and fits the slide bar 10. The slide bar 10 is inserted into the slide groove 11 and slidably connected. Both ends of the first guide sleeve 1 are threadedly connected to a first locking bolt 12. The first locking bolt 12 is inserted into the first guide sleeve 1 and tightly connected to the first extension rod 2. The film roll placement frame 5 includes a film roll threading roller 13 and an extension connecting rod 14. The film roll is sleeved on the outside of the film roll threading roller 13, and the extension connecting rod 14 is inserted into the film roll threading roller 13 and slidably connected.
[0022] The spacing of the diagonal tie rod 3 can be adjusted along with the movement of the first extension rod 2, while the pressure roller 6 and the connecting plate 7 can be adjusted by rotating the threaded rod 8. This controls the total length of the slide bar 10 and the pressure roller 6, facilitating the control of the film width. The film roll is threaded through the film roll threading roller 13. With the cooperation of the film roll threading roller 13 and the extension connecting rod 14, the film roll placement frame 5 can be adjusted along with the adjustment of the diagonal tie rod 3, thus forming a double unwinding setup. When rewinding, the middle film overlaps, and the total effective width of the two film rolls is adapted to the road surface, so that the road surface can be completely covered with a single film covering.
[0023] A first end plate 15 is fixedly connected to the end of the film roll threading roller 13 away from the extension connecting rod 14. An adjusting sleeve 16 is slidably sleeved on the extension connecting rod 14. A second end plate 17 corresponding to the first end plate 15 is fixedly connected to the adjusting sleeve 16. The film roll is disposed between the first end plate 15 and the second end plate 17. A second locking bolt 18 is threadedly connected to the adjusting sleeve 16. The second locking bolt 18 is inserted into the adjusting sleeve 16 and is tightly fitted with the extension connecting rod 14.
[0024] The first end plate 15 is rotatably connected to the hinge seat 19, and the extension connecting rod 14 is fixedly connected to the mounting base 20. The hinge seat 19 is hingedly installed with the corresponding tie rod 3 and support rod 4, and the mounting base 20 is fixedly installed with the corresponding tie rod 3 and support rod 4 by fixing bolts.
[0025] Adjusting the sleeve 16 allows for easy positioning of the film roll via the first end plate 15 and the second end plate 17. The film roll threading roller 13 can be deflected via the hinge seat 19, and the extension rod 14 can be removed by disassembling the fixing bolts, thus facilitating the replacement of the film roll on the film roll threading roller 13.
[0026] The first guide sleeve 1 is hinged to the truss 21. The bottom of the truss 21 is rotatably mounted with a traveling wheel 22, and the truss 21 is provided with a traction connection seat 23.
[0027] A hanger 24 is fixedly connected to the top surface of the truss 21. A chain 26 is installed at the end of the hanger 24 by mounting bolts 25. A second guide sleeve 27 is suspended at the end of the chain 26.
[0028] The ends of the second guide sleeve 27 are slidably connected to the second extension rod 28. The two ends of the second guide sleeve 27 are symmetrically threaded with the third locking bolt 29. The third locking bolt 29 is inserted into the second guide sleeve 27 and is tightly connected to the second extension rod 28. The end of the second extension rod 28 is fixedly connected to the plumb rod 30, which is rotatably connected to the diagonal tie rod 3.
[0029] The support is formed by the truss 21 and the traveling wheel 22. The second guide sleeve 27 is suspended by the hanger 24 and the chain 26. The tail end of the diagonal tie rod 3 is further suspended by the second extension rod 28 and the vertical rod 30, so that the pressure roller 6 can be lifted when the device is not in use, and the device can be moved with the traction equipment.
[0030] The working principle of this utility model is as follows:
[0031] In use, the truss 21 is connected to the traction equipment via the traction connecting seat 23. At this time, the truss 21 is supported by the traveling wheels 22. Depending on the width of the road surface to be constructed, the total length of the pressure roller 6 and the connecting plate 7 is adjusted. Then, the threaded rod 8 is rotated by the rotating head 9, thereby driving the connecting plate 7 away from the pressure roller 6 with the cooperation of the sliding strip 10 and the sliding groove 11. At this time, the diagonal tie rods 3 move away from each other, so that the first extension rod 2 slides out from the first guide sleeve 1. At the same time, the second extension rod 28 is driven to slide out from the second guide sleeve 27 by the vertical rod 30. At this time, the extension connecting rod 14 slides out from the film roll threading roller 13. Then, the first locking bolt 12 and the third locking bolt 29 are locked, so that the device is aligned with the road surface. With the width matched, adjust the adjusting sleeve 16 to bring the second end plate 17 closer to the film roll threading roller 13, and further tighten the second locking bolt 18. At this time, the mounting base 20 can be disassembled, and the film roll threading roller 13 can be deflected through the hinge seat 19. Remove the extension connecting rod 14, and place the film roll on the film roll threading roller 13. Then, reinsert the extension connecting rod 14 and fix the mounting base 20 accordingly. Unwind the film roll so that it passes under the pressure roller 6 and the slide bar 10. Further adjust the position of the chain 26 corresponding to the mounting bolt 25, and lower the inclined pull rod 3. At this time, the pressure roller 6 falls to the ground under the action of gravity. Then, the film coating operation is carried out by pulling through the traction device.
[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A maintenance mulching device for highway construction, comprising a first guide sleeve (1), characterized in that: Both ends of the first guide sleeve (1) are slidably connected to a first extension rod (2), and the ends of the first extension rod (2) are fixedly connected to a diagonal tie rod (3). A support rod (4) is fixedly connected to the diagonal tie rod (3). A film roll placement rack (5) is installed between the support rods (4) and between the diagonal tie rods (3) in front of the support rods (4). A film roll is installed on the film roll placement rack (5). The film roll placement rack (5) between the support rods (4) and the film roll placement rack (5) of the diagonal tie rod (3) are set in opposite directions. A pressure roller (6) is provided between the bottom ends of the diagonal tie rods (3). A connecting plate (7) is provided on the outer side of both ends of the pressure roller (6). The connecting plate (7) is rotatably connected to the diagonal tie rod (3). A threaded rod (8) is rotatably connected to the connecting plate (7). One end of the threaded rod (8) is fixedly connected to a screw. The other end of the rotating head (9) and the threaded rod (8) is inserted into the pressure roller (6) and threadedly connected to the pressure roller (6). The connecting plate (7) is circumferentially fixed with a slide bar (10). The slide bars (10) on the two connecting plates (7) are staggered. The pressure roller (6) is provided with a slide groove (11) that corresponds to and matches the slide bar (10). The slide bar (10) is inserted into the slide groove (11) and slidably connected. The two ends of the first guide sleeve (1) are threadedly connected with the first locking bolt (12). The first locking bolt (12) is inserted into the first guide sleeve (1) and tightly connected to the first extension rod (2). The film roll placement rack (5) includes a film roll threading roller (13) and an extension connecting rod (14). The film roll is sleeved on the outside of the film roll threading roller (13). The extension connecting rod (14) is inserted into the film roll threading roller (13) and slidably connected.
2. The maintenance mulching device for highway construction according to claim 1, characterized in that: The end of the film roll threading roller (13) away from the extension rod (14) is fixedly connected to a first end plate (15). An adjusting sleeve (16) is slidably sleeved on the extension rod (14). A second end plate (17) corresponding to the first end plate (15) is fixedly connected to the adjusting sleeve (16). The film roll is disposed between the first end plate (15) and the second end plate (17). A second locking bolt (18) is threadedly connected to the adjusting sleeve (16). The second locking bolt (18) is inserted into the adjusting sleeve (16) and is tightly fitted with the extension rod (14).
3. The maintenance mulching device for highway construction according to claim 2, characterized in that: The first end plate (15) is rotatably connected to the hinge seat (19), the extension connecting rod (14) is fixedly connected to the mounting seat (20), the hinge seat (19) is hingedly installed with the corresponding tie rod (3) and support rod (4), and the mounting seat (20) is fixedly installed with the corresponding tie rod (3) and support rod (4) by fixing bolts.
4. The maintenance mulching device for highway construction according to claim 1, characterized in that: The first guide sleeve (1) is hinged to the truss (21), and a traveling wheel (22) is rotatably installed at the bottom of the truss (21). A traction connection seat (23) is provided on the truss (21).
5. A maintenance mulching device for highway construction according to claim 4, characterized in that: The top surface of the truss (21) is fixedly connected to a hanger (24), and a chain (26) is installed at the end of the hanger (24) by mounting bolts (25). A second guide sleeve (27) is suspended at the end of the chain (26).
6. A maintenance mulching device for highway construction according to claim 5, characterized in that: The ends of the second guide sleeve (27) are slidably connected to the second extension rod (28). The two ends of the second guide sleeve (27) are symmetrically threaded with the third locking bolt (29). The third locking bolt (29) is inserted into the second guide sleeve (27) and is tightly connected to the second extension rod (28). The end of the second extension rod (28) is fixedly connected to the plumb rod (30). The plumb rod (30) is rotatably connected to the diagonal tie rod (3).