A concrete reinforcing assembly for a manhole cover

Abstract

The utility model discloses a kind of well lid mounting concrete reinforcing combined adjustable outer mold devices, it is related to civil engineering technical field, including side mould and corner mould;The side mould and corner mould are all four, four side moulds are respectively set in the four sides of rectangular structure, four corner moulds are respectively set in the four corners of rectangular structure;The corner mould is right-angle structure, and the end of its two ends is respectively detachably connected with the end of adjacent side mould;The utility model is quickly assembled into rectangular outer mold frame by modularization design, side mould and corner mould, and is suitable for the reinforcing requirement of concrete pouring when well lid installation;By first mounting hole respectively with the assembly of second mounting hole of different position, frame size can be conveniently adjusted.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and in particular to an adjustable external formwork device for concrete reinforcement of manhole cover installation. Background Technology

[0002] In municipal road construction, manhole cover installation is typically carried out before the asphalt surface layer is laid. The top surface of the manhole cover must be level with the asphalt surface layer and higher than the underlying asphalt pavement. Conventional construction methods use concrete to reinforce the area around the manhole. However, due to the annular gap between the manhole cover and the underlying asphalt, it is difficult to ensure the compaction of the concrete during pouring, easily leading to defects such as incomplete filling. To compensate for this common quality problem, in actual projects, secondary grouting is often required after the surface layer is laid. This not only wastes materials and increases labor costs, but also makes it difficult to completely guarantee the filling effect of the grouting due to the obstruction of the asphalt layer. As a result, after the road is opened to traffic, the area around the manhole cover is prone to loosening and settlement.

[0003] To address the aforementioned issues, some construction companies have attempted to use temporary external formwork made of square timber or bamboo plywood to assist in the pouring process. While this improves the density of the poured concrete, the dimensions around the manhole vary significantly depending on the manhole's specifications, requiring frequent cutting and adjustment of the formwork. Furthermore, the wooden / plywood formwork has a limited number of uses, leading workers to tend to abandon formwork erection altogether and continue with the traditional method of later grouting reinforcement. Therefore, there is an urgent need to develop a standardized manhole perimeter concrete pouring formwork device that can be quickly adjusted in size, is versatile, and is easy to disassemble and store, in order to resolve the quality risks and efficiency contradictions inherent in existing construction techniques. Utility Model Content

[0004] This utility model provides a combined adjustable outer formwork device for concrete reinforcement of manhole covers, which solves the technical problems of insufficient compaction of the annular gap between the manhole cover and the underlying asphalt in traditional concrete reinforcement processes, which easily leads to filling defects, as well as the difficulty of adapting existing auxiliary formwork to different specifications of manholes, frequent adjustment of formwork size leading to low construction efficiency and low formwork turnover rate.

[0005] To solve the above-mentioned technical problems, this utility model provides a manhole cover installation concrete reinforcement combined adjustable outer mold device, including side molds and corner molds; there are four side molds and four corner molds, with the four side molds respectively set on the four sides of the rectangular structure and the four corner molds respectively set at the four corners of the rectangular structure; the corner molds are right-angled structures, and their two ends are detachably connected to the ends of the adjacent side molds.

[0006] In some embodiments, bolts are also included; first mounting holes are provided on both ends of the side mold, and second mounting holes are provided on both sides of the corner mold, and the first mounting holes and the second mounting holes are detachably connected by bolts.

[0007] In some embodiments, each of the two ends of the side mold is provided with at least two first mounting holes.

[0008] In some embodiments, the number of the second mounting holes is multiple, and the second mounting holes are spaced apart along the length direction of the corner mold.

[0009] In some embodiments, the side of the edge mold has a transverse groove along its length, and the connecting end of the corner mold is provided with a fixing component that cooperates with the transverse groove.

[0010] In some embodiments, the fixing component includes a fixing base plate, a threaded post, and a fastening nut; the fixing base plate is fixed to the side of the corner mold, the threaded post is perpendicularly inserted through the fixing base plate and threadedly connected to it, the protruding end of the threaded post is provided with an external thread, and the fastening nut is screwed into the external thread section.

[0011] In some embodiments, the end of the threaded post abuts against the inner wall of the corner mold, the front end of the threaded post passes through the transverse groove in sequence and is threadedly engaged with the fastening nut, and the pressure-bearing surface of the fastening nut is tightly fitted with the side of the side mold.

[0012] Compared with related technologies, the adjustable outer formwork device for concrete reinforcement of manhole cover installation provided by this utility model has the following advantages:

[0013] This utility model provides a modular adjustable outer mold device for concrete reinforcement during manhole cover installation. Through modular design, the side molds and corner molds can be quickly assembled into a rectangular outer mold frame, which is suitable for the reinforcement needs of concrete pouring during manhole cover installation. By assembling the first mounting hole with the second mounting hole at different positions, the frame size can be easily adjusted. Through the detachable combination design of the side molds and corner molds, the template size can be flexibly adjusted to adapt to manholes of different diameters, reducing the time required for template customization or repeated adjustments due to differences in manhole opening specifications.

[0014] This utility model provides a combined adjustable outer mold device for reinforced concrete installation of manhole covers. Utilizing the transverse grooves on the side molds, the tightening force of the threaded column between the side molds and corner molds can be adjusted by rotating the fastening nut, thereby adjusting the transverse position of the side molds and corner molds to accommodate manhole opening size deviations or formwork deformation compensation. The adjustable outer mold device accurately shapes and constrains the annular gap, ensuring sufficient concrete vibration, eliminating filling defects caused by narrow space in traditional processes, and improving the density and bearing capacity of the concrete around the manhole opening. Attached Figure Description

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

[0016] Figure 2This is a three-dimensional assembly diagram of part of the structure of Embodiment 2 of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0018] Figure 4 This is a schematic diagram of the assembly of the fixing components of this utility model.

[0019] The following are the labels in the diagram: 1. Side mold; 2. Corner mold; 3. Bolt; 4. Fixing component; 11. First mounting hole; 12. Mounting transverse groove; 21. Second mounting hole; 41. Fixing base plate; 42. Threaded post; 43. Fastening nut. Detailed Implementation

[0020] Example 1

[0021] This embodiment provides a combined adjustable outer formwork device for concrete reinforcement of manhole covers, such as... Figure 1-4 As shown, this utility model includes side molds 1 and corner molds 2; there are four side molds 1 and four corner molds 2. The four side molds 1 are respectively set on the four sides of the rectangular structure, and the four corner molds 2 are respectively set at the four corners of the rectangular structure; the corner molds 2 are right-angled structures, and their two ends are detachably connected to the ends of the adjacent side molds 1.

[0022] In this embodiment, both the side mold 1 and the corner mold 2 are made of aluminum alloy. The side mold 1 is 10cm high, the corner mold 2 is 8.5cm high, and both have a wall thickness of 5mm. Through modular design, the side mold 1 and the corner mold 2 can be quickly assembled into a rectangular outer mold frame, which is suitable for the reinforcement needs of concrete pouring during manhole cover installation.

[0023] Example 2

[0024] Based on Example 1, such as Figure 1-2 As shown, in this embodiment, the two ends of the side mold 1 are provided with first mounting holes 11, and the two sides of the corner mold 2 are provided with second mounting holes 21. The first mounting holes 11 and the second mounting holes 21 are detachably connected by M3 bolts 3. Each end of the side mold 1 has at least two first mounting holes 11, and there are multiple second mounting holes 21, which are spaced apart along the length of the corner mold 2. The remaining technical features are the same as in Embodiment 1.

[0025] In this embodiment, the four side molds 1 and four corner molds 2 are fixed together by bolts 3 to form a stable rectangular frame. This frame can be repeatedly disassembled and reassembled, and is assembled with the second mounting holes 21 at different positions via the first mounting holes 11, facilitating adjustment of the frame size. The structure is simple, assembly efficiency is high, and it is suitable for concrete reinforcement of standard wellhead sizes.

[0026] Example 3

[0027] Based on Example 1, such as Figure 3-4 As shown, in this embodiment, the side of the edge mold 1 has a transverse groove 12 along its length. The connecting end of the corner mold 2 is provided with a fixing component 4 that mates with the transverse groove 12. The fixing component 4 includes a fixing base plate 41, a threaded post 42, and a fastening nut 43. The fixing base plate 41 is fixed to the side of the corner mold 2. The threaded post 42 is perpendicularly inserted into the fixing base plate 41 and threadedly connected to it. The protruding end of the threaded post 42 has an external thread, and the fastening nut 43 is screwed into the external thread. The end of the threaded post 42 abuts against the inner wall of the corner mold 2. The front end of the threaded post 42 passes through the transverse groove 12 and is threadedly engaged with the fastening nut 43. The bearing surface of the fastening nut 43 is tightly fitted to the side of the edge mold 1. The remaining technical features are the same as in Embodiment 1.

[0028] In this embodiment, the tightening force of the threaded column 42 on the side mold 1 and the corner mold 2 can be adjusted by rotating the fastening nut 43, thereby adjusting the lateral position of the side mold 1 and the corner mold 2 to adapt to wellhead size deviation or template deformation compensation.

Claims

1. A modular adjustable outer formwork device for reinforcing concrete during manhole cover installation, characterized in that, It includes side molds and corner molds; there are four side molds and four corner molds, with the four side molds respectively set on the four sides of the rectangular structure and the four corner molds respectively set at the four corners of the rectangular structure; the corner molds are right-angled structures, and their two ends are detachably connected to the ends of the adjacent side molds. It also includes bolts; the two ends of the side mold are provided with first mounting holes, and the two sides of the corner mold are provided with second mounting holes. The first mounting holes and the second mounting holes are detachably connected by bolts.

2. The adjustable outer formwork device for concrete reinforcement of manhole covers according to claim 1, characterized in that, Each of the two ends of the side mold is provided with at least two first mounting holes.

3. The adjustable outer formwork device for concrete reinforcement of manhole covers according to claim 1, characterized in that, The number of the second mounting holes is multiple, and the second mounting holes are distributed at intervals along the length direction of the corner mold.

4. The adjustable outer formwork device for concrete reinforcement of manhole cover installation according to claim 1, characterized in that, The side of the edge mold has a transverse groove along its length, and the connecting end of the corner mold has a fixing component that cooperates with the transverse groove.

5. The adjustable outer formwork device for concrete reinforcement of manhole cover installation according to claim 4, characterized in that, The fixing component includes a fixing base plate, a threaded post, and a fastening nut; the fixing base plate is fixed to the side of the corner mold, the threaded post is perpendicularly inserted through the fixing base plate and threadedly connected to it, the protruding end of the threaded post is provided with an external thread, and the fastening nut is screwed into the external thread section.

6. The adjustable outer formwork device for concrete reinforcement of manhole cover installation according to claim 5, characterized in that, The end of the threaded column abuts against the inner wall of the corner mold, and the front end of the threaded column passes through the transverse groove in sequence and is threadedly engaged with the fastening nut. The bearing surface of the fastening nut is in close contact with the side of the side mold.

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