Inner formwork for reserved circular holes on concrete slabs

Abstract

The present application discloses an inner template for a reserved circular hole on a concrete slab, comprising: a circular template, a fastener, a left handle, and a right handle; an opening is arranged on the side wall of the circular template; a left handle and a right handle are arranged on one side wall of the opening; when installing, the fastener is clamped on the top surface of the left handle and the right handle, and is hinged with the left handle through a hinge shaft; the end surfaces of the left handle and the right handle are aligned, and the opening of the circular template is aligned; when removing, the left side of the fastener rotates around the hinge shaft, and the fastener is separated from the right handle. The use of the template can avoid displacement during pouring, and after the use of the template, no deformation of the poured component occurs.

Description

Technical Field

[0001] The present application relates to the technical field of concrete slab casting, and in particular to an inner template with reserved circular holes on a concrete slab. Background Art

[0002] During the construction of the template with reserved circular holes on the concrete slab, the existing operation process is extremely inconvenient to set up and remove the template. During the splicing process, it takes a long time, requires multi-dimensional adjustments, consumes a lot of manpower, and the molding quality of the reserved circular hole template depends on the template installation and removal level of the operator. To address this problem, the template frame and the concrete slab are integrally cast, such as the prefabricated template device for reserved holes on the concrete slab disclosed in CN201820965953.5. This device cannot be removed after use, which increases the construction cost.

[0003] During the concrete pouring process, the circular formwork is prone to displacement and deformation under the impact of the concrete flow, causing the final concrete to be deformed or chipped, resulting in a decline in quality, affecting the final quality and appearance of the concrete structure. Subsequent manual grinding and finishing are required before it can be put into normal use. Some severely damaged components cannot be repaired and can only be re-poured, increasing production costs.

[0004] The information disclosed in the background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the present application provides an inner template with reserved circular holes on a concrete slab. The device has low manufacturing cost, is easy and quick to install and disassemble, is standardized, and has high turnover efficiency.

[0006] The present application provides an inner template for a reserved circular hole on a concrete slab, comprising: a circular template, a fastener, a left handle, and a right handle; an opening is arranged on a side wall of the circular template; a left handle and a right handle are arranged on a side wall of the opening;

[0007] During installation, the fastener is clamped on the top surface of the left handle and the right handle, and is hinged to the left handle through a hinge shaft; the end surfaces of the left handle and the right handle are aligned, and the openings of the circular template are aligned;

[0008] When dismantling, the left side of the fastener rotates around the hinge axis, and the fastener is separated from the right handle.

[0009] Preferably, the left handle comprises: a plate body and a connecting plate; the plate body is connected to the circular template via the connecting plate; the connecting plate is vertically connected to the circular template; the plate body and the connecting plate are vertically connected.

[0010] Preferably, the right handle comprises: a plate body and a connecting plate; the plate body is connected to the circular template via the connecting plate; the connecting plate is vertically connected to the circular template; the plate body and the connecting plate are vertically connected.

[0011] Preferably, a handle hole is provided on the extended end of the plate body.

[0012] Preferably, it comprises: a fastener hammer head; the fastener hammer head is arranged at the top of the fastener near the left handle.

[0013] Preferably, the fastener comprises: a body, a first card slot, and a second card slot; the first card slot is arranged on the bottom surface of the body; the tops of the left handle and the right handle are inserted into the first card slot; the second card slot is arranged on the side of the body close to the left handle.

[0014] Preferably, a pin hole is provided on the second card slot; a through hole is provided on the left handle; the pin hole and the through hole are aligned; and the pin is inserted into the pin hole and the through hole.

[0015] Preferably, the circular template comprises: a circular steel mold ring; an opening is arranged on one side of the circular steel mold ring; and the processing diameter of the circular steel mold ring is smaller than the diameter of the use position.

[0016] The beneficial effects of this application include:

[0017] 1) The inner template with a reserved circular hole on the concrete slab provided by the present application can be used as a template by aligning the open end faces of the circular template with a processing diameter smaller than the diameter of the use position through the fastener, the left handle and the right handle. When the use is completed, the template can be removed by simply knocking the fastener to separate the fastener from the right handle. The device is easy to dismantle and can ensure that the template maintains a good clamping force during use, thereby ensuring the quality and structural integrity of the component after casting.

[0018] 2) The inner template with reserved circular holes on the concrete slab provided in the present application can avoid displacement during pouring. After using the template, no deformation of the poured components occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A side view of an inner formwork for a reserved circular hole on a concrete slab provided for this application;

[0020] Figure 2 Front view of the inner formwork for reserved circular holes on the concrete slab provided for this application;

[0021] Figure 3 A front view of the left half of the inner formwork for reserving circular holes on the concrete slab provided in this application;

[0022] Figure 4A right half front view of an inner formwork for reserving circular holes on a concrete slab provided in this application;

[0023] Figure 5 Front view of the fastener provided for this application;

[0024] Figure 6 for Figure 5 A top view of the middle fastener;

[0025] Figure 7 for Figure 5 Right side view of the middle fastener;

[0026] Legend:

[0027] Circular template 1, fastener 2, left handle 3, right handle 4, handle hole 5, fastener hammer head 6, pin 7, first slot 8, second slot 9. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] The technical means that are not described in detail in this application and are not used to solve the technical problems of this application are all set according to the common knowledge in the field, and can be implemented in a variety of common knowledge settings.

[0031] See also Figures 1 to 6The inner template for reserved circular holes on the concrete slab provided in the present application comprises: a circular template 1 and a fastener 2. The circular template 1 comprises: a circular steel mold ring, a left handle 3 and a right handle 4. An opening is set at one place of the circular steel mold ring, and a left handle 3 and a right handle 4 are respectively set above the opening. The fastener 2 is hinged to the left handle 3 at one end of the circular template 1 through a pin 7; during assembly, the right handle 4 and the left handle 3 are inserted into the first card slot 8 set on the bottom surface of the fastener 2. A second card slot 9 is set in the side wall of the fastener 2. The second card slot 9 is set through the fastener 2. When the template is removed, the fastener 2 rotates around the pin 7 to accommodate the left handle 3 into the second card slot 9 and separate from the right handle 4. By setting the pin 7 on the fastener 2, it can prevent the loss of components during transfer.

[0032] The processing diameter of the circular steel mold ring is smaller than the diameter at the use position, so the circular steel mold ring has a rebound force. For example, the processing diameter of the circular steel mold ring is 65mm; the diameter of the circular steel mold ring at the use position is 70mm. In order to utilize the rebound force of the circular steel mold ring, the template function is exerted.

[0033] During installation, pull the left handle 3 and the right handle 4 at the same time to expand the circular steel mold ring outward from the opening, and at the same time knock the upper right part of the fastener 2, and buckle the right side of the fastener 2. The fastener 2 is pressed on the end faces of the left handle 3 and the right handle 4, and a pin 7 is inserted in the pin hole of the fastener 2 and the through hole of the left handle 3. The end faces of the left handle 3 and the right handle 4 are aligned through the extrusion force, driving the left and right end faces of the circular steel mold ring to align. Withdraw the force of pulling the left handle 3 and the right handle 4, and the circular template 1 is squeezed inward under the extrusion of the fastener 2 to form a ring template. Then the workers install it at the location where it needs to be installed.

[0034] When dismantling, first strike the fastener hammer head 6 on the upper left part of the fastener 2. The left side of the fastener 2 rotates around the hinge pin 7 and then the right side is tilted up to make the fastener 2 detach from the right handle 4. Then pull the right handle 4 toward the center of the circle to stagger the left and right opening end faces of the circular steel mold ring. The circular steel mold ring automatically rebounds and detaches from the concrete, making it easy to dismantle.

[0035] In a specific embodiment, the fastener 2 includes: a body, a fastener hammer head 6, a pin hole, a first card slot 8, and a second card slot 9; the second card slot 9 is provided on the side of the body close to the left handle 3; the fastener hammer head 6 is provided on the upper part of the body close to the left handle 3; a through hole is provided on the left handle 3 and is aligned with the pin hole, and the pin is inserted into the pin hole and the through hole. The second card slot 9 is provided on the bottom surface of the body. The left handle 3 is accommodated in the first card slot 8; the left handle 3 and the right handle 4 are accommodated in the second card slot 9.

[0036] In a specific embodiment, the left handle 3 includes: a plate body and a connecting plate; the connecting plate is connected to a side wall of the opening of the circular steel mold ring, and the plate body and the connecting plate are vertically connected and extend outward. External force can be applied to the circular steel mold ring by pulling the plate body.

[0037] In a specific embodiment, the right handle 4 includes: a plate body and a connecting plate; the connecting plate is connected to a side wall of the opening of the circular steel mold ring, and the plate body and the connecting plate are vertically connected and extend outward. External force can be applied to the circular steel mold ring by pulling the plate body.

[0038] In a specific embodiment, a handle hole 5 is provided on the extended end of the left handle 3 and the right handle 4, so as to facilitate pulling the left handle 3 and the right handle 4 by applying an outward pulling force through a rope or other components.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner template with reserved circular holes on a concrete slab, characterized in that: include: A circular template (1), a fastener (2), a left handle (3), and a right handle (4); an opening is arranged on a side wall of the circular template (1); a left handle (3) and a right handle (4) are arranged on a side wall of the opening; During installation, the fastener (2) is clamped on the top surfaces of the left handle (3) and the right handle (4), and is hinged to the left handle (3) via a hinge shaft; the end surfaces of the left handle (3) and the right handle (4) are aligned, and the openings of the circular template (1) are aligned; When dismantling, the left side of the fastener (2) rotates around the hinge axis, and the fastener (2) and the right side handle (4) are separated and arranged.

2. The inner formwork for reserved circular holes on a concrete slab according to claim 1, characterized in that: The left handle (3) comprises: a plate body and a connecting plate; the plate body is connected to the circular template (1) via the connecting plate; the connecting plate is vertically connected to the circular template (1); the plate body and the connecting plate are vertically connected.

3. The inner formwork for reserved circular holes on a concrete slab according to claim 1, characterized in that: The right handle (4) comprises: a plate body and a connecting plate; the plate body is connected to the circular template (1) via the connecting plate; the connecting plate is vertically connected to the circular template (1); the plate body and the connecting plate are vertically connected.

4. The inner formwork for reserved circular holes on a concrete slab according to claim 2 or 3, characterized in that: A handle hole (5) is provided on the extended end of the plate body.

5. The inner formwork for reserved circular holes on a concrete slab according to claim 1, characterized in that: include: The fastener hammer head (6) is arranged on the top of the fastener (2) near the left side handle (3).

6. The inner formwork for reserved circular holes on a concrete slab according to claim 1, characterized in that: The fastener (2) comprises: a body, a first card slot (8), and a second card slot (9); the first card slot (8) is arranged on the bottom surface of the body; the tops of the left handle (3) and the right handle (4) are inserted into the first card slot (8); and the second card slot (9) is arranged on the side of the body close to the left handle (3).

7. The inner formwork for reserved circular holes on a concrete slab according to claim 6, characterized in that: A pin hole is provided on the second slot (9); a through hole is provided on the left handle (3); the pin hole and the through hole are arranged in alignment; and the pin (7) is inserted into the pin hole and the through hole.

8. The inner formwork for reserved circular holes on a concrete slab according to claim 1, characterized in that: The circular template (1) comprises: a circular steel mold ring; an opening is arranged on one side of the circular steel mold ring; and the processing diameter of the circular steel mold ring is smaller than the diameter at the use position.

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