House building construction reserved hole shaping mold

Abstract

The utility model discloses a house building construction reserved hole shaping mould which comprises a mould body with an upper opening weight reduction cavity surrounded by a steel plate, the mould body is of a taper structure with a large upper part and a small lower part, a support horizontal rod is horizontally arranged on the top of the mould body, a door-shaped handle is fixedly connected to the support horizontal rod, an inner thread sleeve is vertically arranged at the center of the support horizontal rod on the inner side of the door-shaped handle, the axis of the inner thread sleeve is consistent with the axis of the mould body, the lower end of the inner thread sleeve extends downward and is fixedly connected to the center of the bottom wall of the mould body, a demoulding rod is screw-connected to the inner thread sleeve, an operating handle is fixedly connected to the upper end of the demoulding rod, a plurality of positioning nuts are uniformly and intervally embedded and fixed to the bottom wall of the mould body on the outer side of the inner thread sleeve, and a positioning binding rod is screw-connected to each positioning nut. The utility model has the advantages of improving the one-time forming rate of the reserved hole during the pouring of concrete, accurately positioning the size and position of the hole, improving the forming quality of the reserved hole, and improving the work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a mold for pre-reserved holes in building construction. Background Technology

[0002] During the on-site construction of concrete structures in building construction, various openings are frequently required, such as pipe shaft holes, air conditioning holes, and auxiliary positioning holes. Traditional methods for reserving openings often involve using wooden formwork and square timber for reinforcement. However, wooden formwork is easily damaged and cannot be reused for extended periods. Furthermore, due to its low rigidity, wooden formwork is prone to deformation and damage, and the lack of reliable fixing measures leads to deformation, displacement, grout leakage, and breakage during subsequent pouring and vibration under the pressure of concrete. This results in poor final quality of the openings, and subsequent repairs waste a significant amount of time and manpower, greatly reducing construction efficiency and increasing construction costs. Summary of the Invention

[0003] The purpose of this utility model is to provide a mold for shaping reserved holes in building construction, in order to address the shortcomings of the existing technology.

[0004] To achieve the above objectives, the present invention can adopt the following technical solution:

[0005] The pre-formed mold for reserved openings in building construction according to this utility model includes a mold body formed by steel plates and having an upper-opening weight-reducing cavity. The mold body has a conical structure that is larger at the top and smaller at the bottom, with a horizontal support bar mounted on the top edge. A U-shaped handle is fixedly connected to the support bar. An internally threaded sleeve is vertically inserted at the center of the support bar inside the U-shaped handle. The axis of the internally threaded sleeve is consistent with the axis of the mold body, and its lower end extends downward and is fixed to the center of the bottom wall of the mold body. A demolding rod is adapted and screwed into the internally threaded sleeve, and an operating handle is fixedly connected to the upper end of the demolding rod. Multiple positioning nuts are evenly spaced along the circumference on the bottom wall of the mold body outside the internally threaded sleeve, and a positioning binding rod is screwed into each positioning nut.

[0006] Furthermore, the mold body is a conical or pyramidal structure, so as to facilitate the selection of a shape that matches the reserved hole for the pipeline well, air conditioning hole or auxiliary positioning hole for the construction of the reserved hole.

[0007] Furthermore, for ease of operation, the axis of the operating handle should be perpendicular to the axis of the demolding rod; in addition, flexible grip sleeves with rough outer surfaces are fixedly fitted on the outer wall of the transverse push rod of the U-shaped handle and the outer wall of the operating handle, thereby improving grip comfort.

[0008] The advantages of this utility model are that it uses the mold body to position the reserved holes in building construction, thereby improving the one-time forming rate of the reserved holes during concrete pouring, accurately positioning the size and position of the hole, effectively avoiding deformation, displacement, leakage, and damage of the mold body during pouring and vibration, improving the forming quality of the reserved holes, avoiding the waste of a lot of time and manpower for secondary repairs, and improving work efficiency; in addition, it can also assist in demolding by using a demolding rod screwed through the internal threaded sleeve, which is convenient for reuse and reduces construction and usage costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 yes Figure 1 Bottom view of the middle mold body.

[0011] Figure 3 yes Figure 1 A sectional view of the middle mold body along the AA direction. Detailed Implementation

[0012] 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.

[0013] like Figure 1-3 As shown, the pre-reserved hole shaping mold for building construction described in this utility model includes a mold body 1 formed by steel plates and having an upper open weight-reducing cavity. The mold body 1 has a conical structure that is larger at the top and smaller at the bottom, specifically a cone or a square pyramid structure. Its height should be at least greater than the thickness of the concrete wall panel 100 to be poured, so as to select a shape that matches the pre-reserved hole for the pipe well, air conditioning hole or auxiliary positioning hole for the construction of the concrete wall panel 100, so that the pre-reserved hole 200 of the corresponding shape can be easily reserved on the concrete wall panel 100.

[0014] A support crossbar 2 is horizontally mounted on the top edge of the mold body 1. The support crossbar 2 is a rectangular square steel welded and fixed to the mold body 1. A door-shaped handle 3 is fixed to the upper surface of the support crossbar 2. An internal threaded sleeve 4 is vertically inserted at the center of the support crossbar 2 located inside the door-shaped handle 3. The axis of the internal threaded sleeve 4 is consistent with the axis of the mold body 1. The lower end of the internal threaded sleeve 4 extends downward and is fixed to the center of the bottom wall of the mold body 1, thereby forming a through cavity in the mold body 1 that is consistent with its axis.

[0015] The internal threaded sleeve 4 is fitted with a demolding rod 5. The upper end of the demolding rod 5 is fixedly connected to an operating handle 6. The axis of the operating handle 6 should be perpendicular to the axis of the demolding rod 5 so that the operating handle 6 can be held to rotate the demolding rod 5, so that the lower end of the demolding rod 5 can pass downward through the mold body 1, thereby facilitating the application of a reverse pushing force to the demolding rod 5 and easily completing the demolding of the entire mold body 1.

[0016] In addition, multiple positioning nuts 7 are evenly embedded in the bottom wall of the mold body 1 on the outer side of the internal threaded sleeve 4 along the circumference. Each positioning nut 7 can be screwed with a positioning binding rod 8. The positioning binding rod 8 is tied and fixed to the steel reinforcement template laid inside the concrete wall panel 100 before pouring, thereby accurately positioning the position of the mold body 1. This effectively prevents the concrete wall panel 100 from impacting and displacing the mold body 1 during the pouring process, and ensures that the mold body 1 can accurately position the reserved hole 200.

[0017] Furthermore, to improve the grip comfort of the U-shaped handle 3 and the operating handle 6, flexible grip sleeves 9 should be fixedly fitted on the outer wall of the horizontal top rod of the U-shaped handle 3 and the outer wall of the operating handle 6. The outer surface of the flexible grip sleeve 9 is rough, which ensures grip comfort while increasing grip friction.

[0018] In use, a mold body 1 (conical or pyramidal) is selected to match the shape of the reserved hole 200 on the concrete wall panel 100 to be poured. Then, lines are precisely laid out on the outer surface of the side wall of the mold body 1 according to the specific thickness of the concrete wall panel 100 to determine the precise size of the reserved hole 200. After that, the mold body 1 is fixed on the concrete wall panel 100 to be poured and tied in place by the positioning binding rod 8 screwed into the positioning nut 7. After the binding is completed, the concrete wall panel 100 can be poured. This improves the one-time forming rate of the reserved hole 200 during the pouring of the concrete wall panel 100, accurately positions the size and location of the hole, effectively avoids deformation, displacement, leakage, and damage of the mold body 1 during the pouring and vibration process, improves the forming quality of the reserved hole 200, avoids wasting a lot of time and manpower for secondary repairs, and improves work efficiency.

[0019] After the concrete wall panel 100 has solidified and reached its design strength, the mold body 1 can be removed. During demolding, first untie the positioning binding rod 8 and unscrew it. Then, screw on the demolding rod 5 so that the end of the demolding rod 5 furthest from the operating handle 6 passes through the internal threaded sleeve 4. Afterward, grasp the U-shaped handle 3 and pull the mold body 1 outward, while simultaneously striking the end of the demolding rod 5 furthest from the operating handle 6 to easily complete demolding. Alternatively, if the side of the demolding rod 5 furthest from the operating handle 6 has a supporting plate, the demolding rod 5 can be continuously screwed on to press against the plate, thus using a reverse pushing force to easily complete demolding, facilitating future reuse and significantly reducing construction and usage costs.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

Claims

1. A mold for pre-reserved holes in building construction, characterized in that: The mold body comprises a steel plate enclosure with an open-top weight-reducing cavity. The mold body has a tapered structure, wider at the top and narrower at the bottom, with a horizontal support bar mounted on its top edge. A U-shaped handle is fixed to the support bar. An internally threaded sleeve is vertically inserted through the center of the support bar inside the U-shaped handle. The axis of the internally threaded sleeve is aligned with the axis of the mold body, and its lower end extends downward and is fixed to the center of the bottom wall of the mold body. A demolding rod is screwed into the internally threaded sleeve, and an operating handle is fixed to the upper end of the demolding rod. Multiple positioning nuts are evenly spaced along the circumference on the bottom wall of the mold body outside the internally threaded sleeve, and a positioning binding rod is screwed into each positioning nut.

2. The pre-formed mold for reserved holes in building construction according to claim 1, characterized in that: The mold body is a conical or square pyramidal structure.

3. The pre-formed mold for reserved holes in building construction according to claim 1, characterized in that: The axis of the operating handle is perpendicular to the axis of the demolding rod.

4. The pre-formed mold for reserved holes in building construction according to claim 1, characterized in that: Flexible grip sleeves with rough outer surfaces are fixedly fitted on the outer wall of the horizontal top rod of the U-shaped handle and on the outer wall of the operating handle.

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