Box culvert internal maintenance device and maintenance method

Abstract

The present application relates to concrete curing technical field, disclose a kind of box culvert internal curing device and curing method, the box culvert internal curing device includes two tracks, top is arranged in the box culvert along length direction;Curing pipe, pipe wall is equipped with several water seepage holes, sliding or rolling assembly in the track, outer periphery is covered with flexible material, water seepage layer that can adsorb water;Drive assembly, it is equipped in the track, and drive the curing pipe moves;Water supply component, with one end extends to the water delivery pipe in the curing pipe, and water is supplied to the curing pipe inside. Through the box culvert internal curing device and curing method can conveniently carry out curing operation to the roof concrete in box culvert.

Description

Technical Field

[0001] This invention relates to the field of concrete curing technology, specifically to a curing device and method for the interior of a box culvert. Background Technology

[0002] Box culvert structures are often installed along municipal and highway projects, depending on the specific conditions. These culverts typically have a rectangular cross-section and are constructed from reinforced concrete, forming a cylindrical structure open at both ends. After pouring, the concrete requires moisture curing. For the bottom and sides of the culvert, as well as the outer surface, geotextile or plastic film can be covered with water for moisturizing, which is relatively convenient and ensures good concrete strength. However, since the top of the culvert faces downwards, the geotextile or plastic film will sag due to its own weight after watering, failing to adhere properly and achieving the desired curing effect. Directly watering the top will result in most of the water dripping, leading to poor curing and ultimately making it difficult for the concrete to reach the design strength. Summary of the Invention

[0003] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a curing device and method for the inside of a box culvert, which can conveniently carry out curing operations on the top slab concrete inside the box culvert.

[0004] To achieve the above objectives, the present invention provides an internal maintenance device for a box culvert, comprising: two tracks disposed at the top of the box culvert along its length; a maintenance pipe having a plurality of seepage holes in its wall, slidably or rolllly mounted on the tracks, and covered with a flexible, water-absorbing seepage layer on its outer periphery; a drive assembly disposed on the tracks and driving the maintenance pipe to move; and a water supply assembly having a water pipe extending one end into the maintenance pipe and supplying water into the maintenance pipe.

[0005] Preferably, hooks are provided at both ends of the track, and the upper ends of the hooks extend to the upper surface of the box culvert.

[0006] Preferably, an anti-slip pad is provided between the hook and the upper surface of the box culvert.

[0007] Preferably, the vertical portion of the hook is a telescopic rod.

[0008] Preferably, the track is two or more nested U-shaped grooves that can slide relative to each other along the length direction; both ends of the maintenance tube are provided with rollers that are rolled and assembled in the U-shaped grooves; the drive assembly includes a drive motor whose output end is connected to one of the rollers.

[0009] Preferably, the maintenance tube rotates synchronously with the roller.

[0010] Preferably, one end of the water supply pipe passes through the roller shaft away from the drive motor and is rotatably connected to the roller and the maintenance pipe.

[0011] Preferably, the maintenance tube is two or more tubes nested together and capable of sliding relative to each other along the length direction.

[0012] Preferably, the permeable layer is geotextile or sponge.

[0013] To achieve the above objectives, the present invention provides a method for internal maintenance of box culverts, which employs the aforementioned box culvert internal maintenance device and includes the following steps:

[0014] S1. Fix the track along the length of the box culvert and install it inside the box culvert near the top;

[0015] S2. Install both ends of the maintenance pipe on the track, place the drive assembly on the track and connect it to the maintenance pipe to drive the maintenance pipe to move along the track and bring the water-permeable layer on the outer periphery of the maintenance pipe against the top surface inside the box culvert.

[0016] S3. Start the water supply component to supply water into the maintenance pipe at a preset speed, and the water enters the seepage layer through the seepage hole;

[0017] S4. Start the drive assembly to make the maintenance pipe move back and forth along the track inside the box culvert.

[0018] Based on the above description and practical application, it is evident that when the internal curing device for box culverts described in this invention is in use, the curing pipe reciprocates on a track at the top of the box culvert via a drive assembly. A permeable layer on the pipe abuts against the inner surface of the box culvert's top slab, continuously coating the top slab with water that enters the curing pipe, ensuring sufficient moisture for the concrete surface and thus maintaining its moisture retention. Furthermore, because the permeable layer can absorb moisture, no water dripping occurs during the entire curing process as long as the water supply rate does not exceed its absorption capacity. Compared to directly spraying water onto the top slab, this method can save water resources to a certain extent. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal maintenance device for a box culvert according to one embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the track structure in the internal maintenance device of the box culvert according to one embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the assembly of the maintenance pipe and drive assembly in the internal maintenance device of the box culvert according to one embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the water supply component in the internal maintenance device of the box culvert according to one embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the maintenance pipe in the internal maintenance device of the box culvert according to one embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] 1. Track; 2. Maintenance pipe; 3. Drive assembly; 4. Water supply assembly; 5. Culvert top plate; 6. Hook; 7. Anti-slip mat; 8. Water injection channel; 21. Seepage hole; 22. Seepage layer; 31. Roller; 32. Drive motor; 33. Hollow shaft; 41. Water delivery pipe; 42. Water bucket; 43. Water pump; 44. Water inlet; 45. Drain outlet; 46. Equipment platform; 47. Sedimentation tank; 48. Bucket lid. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0027] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0028] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] This embodiment discloses an internal maintenance device for box culverts. Figure 1 The cross-sectional structure of the device is shown. Figure 2 The side structure of the track section in the device is shown. Figure 3 The assembly structure of the curing pipe and drive assembly in the device is shown in cross-section. Figure 4 The cross-sectional structure of the water supply assembly is shown. Figure 5 This shows the cross-sectional structure of the maintenance pipe.

[0030] Please refer to Figures 1 to 5 The internal maintenance device of the box culvert in this embodiment includes: two tracks 1, a maintenance pipe 2, a drive assembly 3, and a water supply assembly 4. The two tracks 1 are located along the length of the box culvert at the top, supporting the movement of the maintenance pipe 2. The maintenance pipe 2 is slidably or rollably mounted on the tracks 1. The pipe wall of the maintenance pipe 2 has several seepage holes 21, and its outer periphery is covered with a flexible, water-absorbing seepage layer 22, such as geotextile or sponge. Water can enter the seepage layer 22 from inside the maintenance pipe 2 through the seepage holes 21. The surface of the seepage layer 22 abuts against the inner surface of the box culvert top plate 5, coating the top plate with the absorbed water to achieve moisture retention and maintenance. The drive assembly 3 is located on the tracks 1 and drives the maintenance pipe 2 to slide or roll along the length of the tracks 1. The water supply assembly 4 includes a water pipe 41 extending into the maintenance pipe 2 at one end, for supplying water to the maintenance pipe 2. The water supply pipe 41 can be connected to an external tap water pipeline or supplied to the maintenance pipe 2 via a water pump 43.

[0031] When the internal curing device of the box culvert is in use, the curing pipe 2 moves back and forth on the track 1 at the top of the box culvert through the drive component 3. The water-permeable layer 22 on it abuts against the inner surface of the box culvert top plate 5, which can continuously coat water on the top plate, ensuring that the concrete surface can get enough moisture to keep the concrete of the top plate moist and curing. Since the water-permeable layer 22 can absorb water, as long as the water supply rate does not exceed its absorption capacity, no water dripping will occur during the entire curing operation.

[0032] Furthermore, in this embodiment, hooks 6 are provided at both ends of the track 1, and the track 1 is connected and fixed to the box culvert through these hooks 6. Please refer to... Figure 2The lower end of the hook 6 is connected to the end of the track 1, and the upper end is bent and extends to the upper surface of the box culvert top plate 5. In use, the upper parts of the two hooks 6 rest on the upper surface of the two ends of the box culvert top plate 5. Under the gravity of the track 1 and the maintenance pipe 2, they can be connected to the box culvert top plate 5. Using the hooks 6, the track 1 can be installed at the required position inside the box culvert without drilling or welding on the box culvert top plate 5. Furthermore, after the maintenance work is completed, the entire maintenance device can be easily removed from the box culvert. Moreover, an anti-slip pad 7, such as a rubber block, is provided between the hooks 6 and the upper surface of the box culvert top plate 5 to increase the friction between the hooks 6 and the box culvert top plate 5, ensuring better stability of the track 1 during use. Furthermore, the vertical part of the hook 6 is a telescopic rod, which can be extended and retracted to adjust its length. During use, its length can be adjusted according to the different thicknesses of the box culvert top plate 5 to make the track 1 reach the required height, ensuring that the permeable layer 22 can abut against the inner surface of the box culvert top plate 5. In other embodiments, the track 1 can also be fixed by drilling holes in the inner wall of the box culvert to install brackets, which can also install the track 1 on the top inside the box culvert.

[0033] In this embodiment, track 1 consists of two nested U-shaped grooves that can slide relative to each other along their length. This allows users to adjust the length of track 1 to suit box culverts within a certain length range. The number of U-shaped grooves can also be increased or decreased to achieve the best match with the box culvert. It should be noted that multiple rows of sliding grooves or sliders can be provided between adjacent U-shaped grooves, or the top of one U-shaped groove can cover the adjacent U-shaped groove. This prevents significant downward deflection at the connection point of adjacent U-shaped grooves, ensuring that track 1 can still be used normally while extending and retracting.

[0034] The curing pipe 2 has rollers 31 at both ends that are rolled within U-shaped grooves. The drive assembly 3 includes a drive motor 32 whose output end is connected to one of the rollers 31. The drive motor 32 drives the rollers 31 to roll within the track 1, simultaneously moving the curing pipe 2 along the track 1. It should be noted that the drive motor 32 is also slidably mounted within the track 1; while driving the rollers 31 to rotate, it does not rotate itself and can move along the track 1 with the rollers 31. It should also be noted that the curing pipe 2 can be either rolled (rotating synchronously with the rollers 31) or slidably mounted (with a bearing between it and the rollers 31, preventing synchronous rolling). In both cases, the outer permeable layer 22 can abut against the inner surface of the culvert top slab 5 during use. When the curing pipe 2 is slidably mounted, the permeable layer 22, being a flexible material, can deform to a certain extent, continuously coating the absorbed water onto the concrete surface. When the curing pipe 2 is rolled, it replenishes water to the concrete while reducing its own wear and extending its service life.

[0035] This embodiment provides a structure in which the maintenance tube 2 moves on the track 1 via the drive assembly 3. In other embodiments, the drive assembly 3 can be connected to the track 1, allowing it to reciprocate along the track 1, while the maintenance tube 2 is connected to the drive assembly 3, thus indirectly enabling the maintenance tube 2 to reciprocate along the track 1. In the prior art, there are various structural methods that allow the maintenance tube 2 to be rolled or slidably mounted on the track 1, which will not be elaborated further.

[0036] In this embodiment, the maintenance pipe 2 rotates synchronously with the roller 31. Correspondingly, to prevent the water supply pipe 41, which has one end inserted into it, from tangling during synchronous rotation, one end of the water supply pipe 41 is positioned at the axis of the roller 31 furthest from the drive motor 32 (i.e.,...). Figure 1 The roller 31 on the right side (which can be considered as a driven roller) is rotatably connected to the maintenance pipe 2. For example, the water supply pipe 41 is rotatably connected to the roller 31 and the maintenance pipe 2 through a sealing bearing or other sealing element. When the maintenance pipe 2 and the roller 31 rotate, the water supply pipe 41 will not rotate, which can prevent it from getting tangled.

[0037] In this embodiment, the maintenance pipe 2 also adopts a telescopic structure, such as two nested pipes that can slide relative to each other along their length. These pipes can be circular or square, or have other non-circular cross-sections. When non-circular pipes are used, all pipes rotate synchronously. Of course, the number of pipes can be increased or decreased according to actual needs to achieve the best matching effect with the box culvert.

[0038] Please combine Figure 1 and Figure 3 The maintenance pipe 2 in the diagram consists of two pipe bodies, one on the left and one on the right. The left pipe body is directly and fixedly connected to the left roller 31, which is connected to the drive motor 32 as the driving wheel. The right pipe body is fitted onto the left pipe body, and its right end is connected to the roller 31 on that side through a hollow shaft 33. A water injection channel 8 is formed along the axis and inserted into the hollow shaft 33 and the roller 31. The water supply pipe 41 is rotatably connected to the water injection channel 8 through sealing bearings and other sealing components. The water injection channel 8 and the pipe body on that side can be an integral structure. This structure can adjust the length to accommodate box culverts of different widths, and can also achieve connection with the water supply pipe 41, drive assembly 3, etc.

[0039] Please combine Figure 1 and Figure 4In this embodiment, the water supply assembly 4 also includes a water tank 42 and a water pump 43. The water tank 42 has an inlet 44 at the top, an outlet 45 at the bottom, and a lid 48 at the top. A raised platform 46 is provided in a partial area at the bottom of the water tank 42 for mounting the water pump 43; that is, the water pump 43 is not located at the bottom of the water tank 42, and another part of the bottom of the water tank forms a sedimentation tank 47. The water pump 43 is fixed on the platform 46 and connected to a water pipe 41 passing through the lid 48, enabling it to supply water to the maintenance pipe 2. Since the water at the construction site is mostly temporary water containing a large amount of sand and gravel particles, the water tank 42 allows these particles to settle to the sedimentation tank 47 at the bottom of the tank beforehand, preventing the water pump 43 from transporting impurities into the maintenance pipe 2 and ensuring a longer service life for the maintenance pipe 2. More specifically, the length of the water supply pipe 41 inside the maintenance pipe 2 is close to the length of the maintenance pipe 2, and the side wall of the water supply pipe 41 in this part is provided with several through holes for water outlet, so that water can enter the maintenance pipe 2 evenly.

[0040] In addition, this embodiment also discloses a method for internal maintenance of box culverts, which uses the above-mentioned box culvert internal maintenance device and includes the following steps:

[0041] Step S1: Fix the track 1 along the length of the box culvert inside the box culvert near the top. For example, install the hooks 6 at both ends of the track 1 and then suspend the hooks 6 at both ends of the top plate 5 of the box culvert. During this process, the length of the track 1 can be adjusted according to the length of the box culvert to ensure that the track 1 is installed throughout the entire box culvert, and that the upper part of the hooks 6 can also extend outside the box culvert.

[0042] Step S2: Install both ends of the maintenance pipe 2 onto the track 1, and place the drive assembly 3 on the track 1 and connect it to the maintenance pipe 2 to drive the maintenance pipe 2 to move along the track 1, so that the water-permeable layer 22 on the outer periphery of the maintenance pipe 2 abuts against the inner surface of the box culvert top plate 5. Taking the maintenance pipe 2 rolling on the track 1 as an example, first install the rollers 31 at both ends of the maintenance pipe 2 into the track 1, then connect the output end of the drive motor 32 that slides on the track 1 to the rollers 31, and then adjust the thickness of the water-permeable layer 22 or the height of the track 1 so that the water-permeable layer 22 can abut against the inner surface of the box culvert top plate 5.

[0043] Step S3: Start the water supply component 4 to supply water into the curing pipe 2 at a preset speed. The water enters the permeable layer 22 through the seepage hole 21. The preset speed can be set according to the actual humidity of the box culvert to ensure that there is sufficient water in the permeable layer 22 and that the water does not drip significantly. This can cure the concrete without wasting water resources.

[0044] Step S4: Activate the drive assembly 3 to move the curing pipe 2 back and forth along the track 1 inside the box culvert. Through the back and forth movement of the curing pipe 2, the concrete inside the box culvert can be continuously cured until it reaches the design strength.

[0045] The invention is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A box culvert interior maintenance device, characterized by, The utility model relates to a box culvert maintenance device, comprising: two tracks arranged on the top of the box culvert along the length direction; a maintenance pipe with a pipe wall provided with a plurality of water permeation holes, slidingly or rollingly assembled on the tracks, and an outer periphery covered with a water permeation layer made of flexible material capable of absorbing water; a driving assembly arranged on the tracks and driving the maintenance pipe to move; a water supply assembly having a water delivery pipe extending into the maintenance pipe and supplying water into the maintenance pipe; hooks arranged at both ends of the tracks, with upper ends of the hooks extending to the upper surface of the box culvert; anti-skid pads arranged between the hooks and the upper surface of the box culvert; a vertical part of the hooks being an extension rod; the tracks being U-shaped grooves nested together and capable of sliding along the length direction; the maintenance pipe being provided with rollers rollingly assembled in the U-shaped grooves at both ends thereof; the driving assembly including a driving motor with an output end connected to one of the rollers; the maintenance pipe rotating synchronously with the rollers; one end of the water delivery pipe penetrating the axis of the roller away from the driving motor and being rotatably connected with the roller and the maintenance pipe; the maintenance pipe being a pipe body nested together and capable of sliding along the length direction; the water permeation layer being geotextile or sponge.

2. A box culvert interior maintenance method using the box culvert interior maintenance device according to claim 1, characterized by, The utility model relates to a box culvert maintenance device, comprising the following steps: S1, fixing and installing the tracks in the box culvert along the length direction close to the top; S2, installing the maintenance pipe at both ends on the tracks, arranging the driving assembly on the tracks and connecting the driving assembly with the maintenance pipe together to drive the maintenance pipe to move along the tracks, and abutting the water permeation layer on the outer periphery of the maintenance pipe against the top surface in the box culvert; S3, starting the water supply assembly to supply water into the maintenance pipe at a preset speed, and the water entering the water permeation layer through the water permeation holes; S4, starting the driving assembly to make the maintenance pipe reciprocate along the tracks in the box culvert.

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