Prefabricated cover plate grate construction device

Abstract

The utility model provides a prefabricated cover plate grate construction device. Two long-edge steel formworks and two short-edge steel formworks are encircled to form a rectangular formwork frame; the long-edge half-hole iron sheet is an iron sheet which is locally bent to form a half-hole outline, the long-edge half-hole iron sheet is attached to the inner side face of the long-edge steel formwork, and a half-hole cavity is defined by a local bending area and the adjacent long-edge steel formwork; one side of the short-edge bottoming angle steel is attached to the inner side face of the short-edge steel formwork, and the other side of the short-edge bottoming angle steel is arranged at the bottom of the rectangular formwork frame; the preformed hole mold comprises a frame and a plurality of preformed hole assemblies arranged at the bottom of the frame, the preformed hole assemblies form an oblong hole cavity, and the preformed hole mold covers the rectangular mold frame from top to bottom; the pin is used for lifting the preformed hole mold for demolding; the area defined by the outer wall of the oblong hole cavity formed by the preformed hole assembly, the long-side half-hole iron sheet and the short-side bottom supporting angle steel is a concrete pouring area. The device has the advantages of convenience in material taking, simplicity in forming and facilitation of popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete technology, specifically to a precast cover grate construction device. Background Technology

[0002] Precast gratings are a type of cover structure used for drainage ditches. They are typically made of concrete and are usually manufactured in a factory using a precast method. They are then laid on top of drainage ditches to guide drainage and protect them.

[0003] When precast cover grates are manufactured in the factory, they need to be completed with the help of precast slab molds. At present, precast slab molds are generally produced in batches by precast component manufacturers or purchased by them. This form is suitable for precast components of single specification and mass production, and is economical. However, it is not suitable for remote areas, complex road surfaces or small-scale construction scenarios, and has a series of problems such as long waiting period, high cost, tight construction period and lack of economy.

[0004] Due to the aforementioned problems, prefabricated cover grates in these scenarios are often constructed using self-made molds. However, the current self-made molds lack rationality in structure. Therefore, it is necessary to design a construction device that is easy to promote and apply, readily available in materials, and simple to form to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a prefabricated cover grate construction device that is easy to source materials, simple to form, and conducive to widespread application.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a prefabricated cover grate construction device, comprising two long-side steel templates, two short-side steel templates, two long-side half-hole iron sheets, two short-side bottom-supporting angle steels, a set of reserved hole molds, and at least two pins;

[0007] The two long-side steel templates and the two short-side steel templates together form a rectangular mold frame;

[0008] The long-side semi-hole sheet metal is a sheet metal that is partially bent to form a semi-hole outline. The long-side semi-hole sheet metal is attached to the inner side of the long-side steel template. The partially bent area and the adjacent long-side steel template together form a semi-hole cavity.

[0009] One side of the short-side bottom support angle steel is attached to the inner side of the short-side steel template, and the other side of the short-side bottom support angle steel is set at the bottom of the rectangular template frame;

[0010] The pre-drilled hole mold includes a frame and a plurality of pre-drilled hole assemblies disposed at the bottom of the frame. The pre-drilled hole assemblies form an elongated oval cavity. The pre-drilled hole mold covers the rectangular mold frame from top to bottom.

[0011] The pin is connected to the frame of the pre-drilled hole mold and is used to lift the pre-drilled hole mold for demolding;

[0012] The area enclosed by the outer wall of the elongated cavity formed by the pre-drilled hole assembly, the long-side half-hole iron sheet, and the short-side bottom-supporting angle steel is the concrete pouring area.

[0013] Preferably, the number of half-hole profiles formed by the long-side half-hole sheet metal is at least two.

[0014] Preferably, the long-side half-hole sheet metal is a single sheet metal integrally formed.

[0015] Preferably, the long-side half-hole sheet metal is formed by splicing and partially overlapping multiple sheets metal.

[0016] Preferably, the bottom edge of the short-side bottom angle steel is used to form a stepped overlap.

[0017] Preferably, the long-side half-hole iron sheet is not connected or welded to the long-side steel template.

[0018] Preferably, the short-side bottom support angle steel and the short-side steel template are not connected or welded together.

[0019] Preferably, the frame of the pre-drilled hole mold is a frame formed by connecting several horizontal and vertical steel plates, and the pre-drilled hole assembly is a splicing piece of several elongated holes evenly distributed below the frame.

[0020] Preferably, the elongated hole splicing component includes two round tubes and a sheet metal connecting the tangent positions of the two round tubes.

[0021] Preferably, the pin has a threaded section below it, and the frame has a corresponding threaded hole. A threaded hole is provided on each of the two lateral sides of the frame.

[0022] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model uses steel plates, sheet metal and angle steel as the main materials to assemble a construction device for prefabricated cover grates. The materials are sourced from common materials or waste materials on the construction site. Moreover, the entire device has a simple forming structure, is easy to construct, and can form grate structures of different specifications. It can be adapted and applied in the construction of various small-scale drainage ditch projects and has high promotion and application value.

[0023] Furthermore, the elongated hole construction relies on pre-drilled hole molds and long-side half-hole sheet metal, making the forming method simple. Angle steel is used to form steps that overlap with the channel boundary, creating a positioning structure. Compared to specialized molds, the structural features are not lacking, and it can meet all the structural requirements of the grate. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a prefabricated cover grate construction device according to this utility model.

[0025] Figure 2 This is a schematic diagram of the pre-reserved hole mold of a prefabricated cover grate construction device in this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of a single pre-drilled hole assembly in this utility model.

[0027] Figure 4 This is a schematic diagram of the pin structure in this utility model.

[0028] In the diagram: 1. Long side steel template; 2. Short side steel template; 3. Long side half-hole sheet metal; 4. Short side bottom support angle steel; 5. Pre-drilled hole mold; 6. Pin; 11. Half-hole chamber; 12. Frame; 13. Pre-drilled hole assembly; 131. Round pipe; 132. Sheet metal; 14. Long oval hole chamber. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0030] like Figures 1-4 As shown, a precast cover grate construction device includes two long-side steel templates 1, two short-side steel templates 2, two long-side half-hole iron sheets 3, two short-side bottom support angle steels 4, a set of reserved hole molds 5, and at least two pins 6.

[0031] The two long-side steel templates 1 and the two short-side steel templates 2 together form a rectangular template frame. Specifically, in this embodiment, the connection between the long-side steel templates 1 and the short-side steel templates 2 can be fixed by welding.

[0032] In other embodiments, bolts or other methods can be used for easy demolding, or a splicing method can be used. During molding, an enclosure structure, such as a heavy-duty baffle, is added to the outside of the steel template to prevent the long side steel template and the short side steel template from separating.

[0033] The long-side semi-perforated sheet metal 3 is a sheet metal that is partially bent to form a semi-perforated outline. The long-side semi-perforated sheet metal 3 is attached to the inner side of the long-side steel template 1. The partially bent area and the adjacent long-side steel template together form a semi-perforated cavity 11.

[0034] Specifically, in this embodiment, the long-side half-hole iron sheet 3 is an integrally bent iron sheet with three half-hole chambers 11. The long-side half-hole iron sheet 3 and the long-side steel template 1 are connected together by welding.

[0035] In other embodiments, the number of semi-hole chambers 11 can be determined according to the design requirements of a single grate plate. At the same time, it can be determined whether the long-side semi-hole iron sheet 3 needs to be manufactured by splicing multiple iron sheets according to the length of the waste material or raw material.

[0036] One side of the short-side bottom support angle steel 4 is attached to the inner side of the short-side steel template 2, either by welding or by simply attaching and splicing without connection. The other side of the short-side bottom support angle steel 4 is located at the bottom of the rectangular template frame. The main purpose of the short-side bottom support angle steel 4 is to form a certain bottom support structure for the concrete cover grate. More importantly, the bottom edge of the short-side bottom support angle steel 4 can form a local step structure on one side of the short side of the grate during the precast concrete cover grate process. This step structure can be used to overlap with the boundary of the drainage ditch to form a positioning structure.

[0037] Therefore, the specific position of the short side bottom support angle steel 4 needs to be set in accordance with the drawings to meet the positioning requirements.

[0038] The pre-drilled hole mold 5 includes a frame 12 and a plurality of pre-drilled hole assemblies 13 disposed at the bottom of the frame. The pre-drilled hole assemblies 13 form an elongated oval cavity 14. The pre-drilled hole mold 5 covers the rectangular mold frame from top to bottom.

[0039] Specifically, in this embodiment, the frame 12 of the pre-drilled hole mold is a frame formed by connecting several horizontal and vertical steel plates or steel bars, and the pre-drilled hole assembly 13 is a number of elongated hole splicing parts evenly distributed below the frame. The composition of the elongated hole splicing parts can be diverse, such as elongated holes formed simply by bending sheet metal, or using some ready-made injection molded elongated holes.

[0040] In this embodiment, in order to increase the utilization rate of on-site waste materials or raw materials and the ease of obtaining raw materials, the elongated hole splicing component includes two round tubes 131 and a sheet metal 132 connecting the tangent positions of the two round tubes. These two materials are relatively easy to obtain, and the splicing method is also relatively simple. The upper end of the round tube 131 can be welded and fixed to the frame.

[0041] The pin 6 is connected to the frame 12 of the pre-drilled hole mold and is used to lift the pre-drilled hole mold 5 for demolding. Specifically, in this embodiment, the lower part of the pin 6 is a threaded section, and the frame 12 is provided with a corresponding threaded hole. The frame 12 is provided with a threaded hole on each of its two lateral sides. In order to prevent the pin 6 from entering the mold cavity downward when it engages with the threaded hole, the position of the threaded hole can be aligned with the position of the oblong hole, so that when the pin 6 is screwed in and moves downward, it can only enter the oblong hole and will not enter the concrete mold cavity.

[0042] The area enclosed by the outer wall of the elongated cavity formed by the pre-reserved hole assembly 5, the long-side half-hole iron sheet 3, and the short-side bottom support angle steel 4 is the concrete pouring area. During pouring, the concrete can be poured from top to bottom, passing through the gap of the frame 12 into the mold cavity. The vibration process can also be carried out through the gap of the frame 12.

[0043] Work process:

[0044] Place the construction equipment in an open area and set it up according to the reserved order of placement and drying of prefabricated components.

[0045] According to the design drawings, the required reinforcing bars and other reinforcing assemblies are laid in the rectangular mold frame;

[0046] Concrete is centrally mixed at the mixing plant according to the design mix ratio, transported to the construction work area by mixer trucks, unloaded into handcarts, manually unloaded, placed into the formwork, leveled, and compacted by inserting tampers. When the concrete is compacted to a thick thickness, it is then manually finished and smoothed with steel trowels.

[0047] Before the concrete sets after pouring, a hole-pulling pin is used to tighten the hole through the pin hole in the reserved hole device. Then, two workers work together to slowly pull up the reserved hole device to form the reserved grate hole.

[0048] Cover the concrete surface with damp burlap sacks, straw mats, or plastic film to keep it moist. Check and replenish the moisture regularly; the curing period should be at least 7 days.

[0049] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A precast cover grate construction device, characterized in that: It includes two long-side steel templates, two short-side steel templates, two long-side half-hole sheet metal, two short-side bottom support angle steels, a set of pre-drilled hole molds, and at least two pins; The two long-side steel templates and the two short-side steel templates together form a rectangular mold frame; The long-side semi-hole sheet metal is a sheet metal that is partially bent to form a semi-hole outline. The long-side semi-hole sheet metal is attached to the inner side of the long-side steel template. The partially bent area and the adjacent long-side steel template together form a semi-hole cavity. One side of the short-side bottom support angle steel is attached to the inner side of the short-side steel template, and the other side of the short-side bottom support angle steel is set at the bottom of the rectangular template frame; The pre-drilled hole mold includes a frame and a plurality of pre-drilled hole assemblies disposed at the bottom of the frame. The pre-drilled hole assemblies form an elongated oval cavity. The pre-drilled hole mold covers the rectangular mold frame from top to bottom. The pin is connected to the frame of the pre-drilled hole mold and is used to lift the pre-drilled hole mold for demolding; The area enclosed by the outer wall of the elongated cavity formed by the pre-drilled hole assembly, the long-side half-hole iron sheet, and the short-side bottom-supporting angle steel is the concrete pouring area.

2. The precast cover grate construction device according to claim 1, characterized in that: The number of half-hole profiles formed by the long-side half-hole iron sheet is at least two.

3. The precast cover grate construction device according to claim 1 or 2, characterized in that: The long-side half-hole iron sheet is a single iron sheet integrally formed.

4. The precast cover grate construction device according to claim 1 or 2, characterized in that: The long-side half-hole iron sheet is formed by splicing together multiple iron sheets and partially overlapping them.

5. The precast cover grate construction device according to claim 1, characterized in that: The bottom edge of the short-side bottom angle steel is used to form a stepped overlap.

6. The precast cover grate construction device according to claim 1, characterized in that: The long-side half-hole iron sheet is not connected or welded to the long-side steel template.

7. The precast cover grate construction device according to claim 1, characterized in that: There is no connection or welding fixation between the short side bottom angle steel and the short side steel template.

8. The precast cover grate construction device according to claim 1, characterized in that: The frame of the pre-drilled hole mold is a frame formed by connecting several horizontal and vertical steel plates, and the pre-drilled hole assembly is a splicing piece of several elongated holes evenly distributed below the frame.

9. The precast cover grate construction device according to claim 8, characterized in that: The elongated hole splice includes two round tubes and sheet metal connecting the tangential positions of the two round tubes.

10. The precast cover grate construction device according to claim 9, characterized in that: The pin has a threaded section below it, and the frame has a corresponding threaded hole. There is a threaded hole on each of the two sides of the frame.

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