A concrete floor flat hole formwork device

Abstract

This utility model relates to a formwork device for sealing planar openings in concrete floor slabs, belonging to the technical field of construction equipment. It addresses the problems of poor formwork fit and low concrete pouring quality in existing technologies where formwork is placed at the bottom of the opening before concrete pouring. This application includes a formwork, a support frame, and a top support assembly. The top support assembly includes a top rod and a driving component. The support frame is installed below the floor slab opening, and the top rod is installed on the support frame via the driving component. A formwork is installed on the opposite end of the top rod away from the support frame, fitting snugly against the floor slab opening. The top rod, driven by the driving component, moves the formwork towards the floor slab opening to abut against it. This formwork effectively fits snugly against the floor slab opening, preventing grout leakage and improving concrete pouring quality. This application eliminates the need for manual work at height, ensuring high construction safety.

Description

Technical Field

[0001] This utility model relates to a formwork hoisting device for a planar opening in a concrete floor slab, belonging to the technical field of building construction equipment. Background Technology

[0002] During the construction of the main building structure, it is unavoidable to leave openings in the concrete floor slab due to procedural requirements, such as wiring holes and pump pipe holes.

[0003] Currently, traditional methods for sealing openings involve using wire mesh to suspend formwork before pouring concrete. Alternatively, formwork can be placed at the bottom of the opening and supported by timber or steel pipes. The drawbacks are uneven stress on the formwork reinforcement, poor adhesion between the formwork and the concrete slab, and easy grout leakage. Furthermore, after demolding, quality problems such as honeycomb, pitting, and misalignment are prone to occur, affecting the overall quality of the concrete slab and increasing later maintenance costs. Therefore, a formwork suspension device for concrete floor slab openings is needed to address the problems of poor formwork adhesion and low concrete pouring quality in existing technologies for sealing concrete floor slab openings, which involve placing formwork at the bottom of the opening before pouring concrete. Utility Model Content

[0004] The purpose of this utility model is to provide a formwork hoisting device for planar openings in concrete floor slabs to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a concrete floor slab plan opening formwork device, comprising a template, a support, and a top support assembly, wherein the top support assembly comprises a top rod and a driving component; the support is installed below the floor slab opening, the top rod is installed on the support via the driving component, and a template is installed on the other end of the top rod away from the support, the template is fitted against the floor slab opening, and the top rod is driven by the driving component to move the template toward the floor slab opening to stop at the floor slab opening.

[0006] Specifically, the support includes a base, legs, and connecting rods; several legs are evenly spaced and fixedly installed on the bottom of the base, and connecting rods connect adjacent legs; the top rod is installed on the base.

[0007] Specifically, a sleeve is fixedly installed on the base. The sleeve has an internal thread, and the push rod has an external thread through the rod body and is threadedly connected to the sleeve. It is installed on the base in a radially rotating manner.

[0008] Specifically, the sleeve passes through the base, the top rod passes through the sleeve, and its two ends extend to the outside of the sleeve to form a bottom extension end and a top extension end; the driving component is installed at the bottom extension end; the top extension end is connected to the template.

[0009] Specifically, the driving component is a rotary handle; the rotary handle is fixedly sleeved on the outer side of the bottom extension end of the top rod.

[0010] Specifically, an extension rod is installed on the rod body located on the side of the template, and the end of the extension rod is connected to the template.

[0011] Specifically, the extension rod has an insertion hole on the rod body facing the top rod, and the top rod has a pin on the rod body facing the extension rod. The extension rod is sleeved on the pin through the insertion hole and connected to the top rod. The insertion hole and the pin are respectively provided with pin holes. The extension rod passes through both the insertion hole and the pin hole of the pin through the pin, so as to allow for a detachable connection between the extension rod and the top rod.

[0012] Specifically, a top support is installed between the extension rod and the template.

[0013] Specifically, the extension rod and the top support are connected by an external thread, and the top support is provided with an internal thread hole. The top support is installed on the extension rod through the internal thread hole and is rotatably connected to the external thread rod.

[0014] Specifically, the shape and size of the template are adapted to the shape and size of the opening in the floor slab.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application utilizes a support frame, a top-support assembly, and a formwork. The top-support assembly includes a top rod and a driving component. By attaching the formwork to the bottom of the floor slab opening and placing the support frame below the opening, the formwork and support frame are supported by the top rod. The driving component drives the top rod to move towards the formwork, thereby stopping the formwork against the floor slab opening and sealing it for concrete pouring. The formwork of this application can effectively fit the floor slab opening, preventing grout leakage and improving the quality of concrete pouring.

[0017] 2. Based on the foregoing, the support frame of this application includes a base, legs, and connecting rods; several legs are evenly spaced and fixedly installed on the bottom of the base, and connecting rods connect adjacent legs; a top rod is installed on the base. This allows for rapid assembly of the hoisting tool during construction, and rapid disassembly and reassembly after construction, enabling reuse. The structure is simple and the production cost is low.

[0018] 3. Based on the foregoing, a sleeve is fixedly installed on the base of this application. The sleeve has an internal thread, and the top rod has an external thread on its body and is threadedly connected to the sleeve, thus being radially rotatable on the base. By setting a sleeve on the base and threadedly connecting the top rod to the sleeve, the top rod can be rotated to drive it to support and reinforce the formwork, thereby improving the sealing of the formwork and floor slab openings and ensuring the quality of the pouring.

[0019] 4. Based on the foregoing, the top rod of this application is equipped with a rotary handle as a driving component to drive the top rod to rotate, which is convenient to operate and can precisely control the top support force through rotation, ensuring the template adhesion force while avoiding excessive top support and damage to the template.

[0020] 5. Based on the foregoing, the top rod of this application is detachably equipped with an extension rod to extend its length. This allows for construction of openings in floor slabs with large floor heights, where only the extension rod needs to be installed, eliminating the need for personnel to climb to heights and improving construction safety.

[0021] 6. Building upon the foregoing, this application includes a top support between the extended rod and the formwork. This top support transmits the supporting force when the rod supports the formwork, ensuring uniform stress on the formwork and guaranteeing effective fit between the formwork and the floor slab opening. Furthermore, the top support and extended rod are connected by a threaded screw structure, allowing for fine-tuning of the support height by rotating the top support to ensure precise support and effectively control the supporting force. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the formwork hoisting device for the planar opening of the concrete floor slab in this embodiment. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] Please see Figure 1 This embodiment discloses a formwork hoisting device for a planar opening in a concrete floor slab, including a template 10, a support frame, and a top support assembly. The top support assembly includes a top rod 6 and a driving component. The support frame is installed below the floor slab opening, and the top rod is installed on the support frame via the driving component. A template is installed on the other end of the top rod away from the support frame, and the shape and size of the template are adapted to the shape and size of the floor slab opening. The template fits against the floor slab opening, and the top rod is driven by the driving component to move the template toward the floor slab opening to abut against it.

[0025] The support frame in this embodiment includes a base 1, legs 2, and connecting rods 3. Four legs are evenly spaced and fixedly installed on the bottom of the base, and connecting rods connect adjacent legs. A sleeve 5 is fixedly installed on the base in this embodiment. The sleeve has internal threads, and a push rod 6 has external threads on its body and is threadedly connected to the sleeve, rotating radially on the base. The sleeve penetrates the base, and the push rod penetrates the sleeve, with both ends extending to the outside of the sleeve, forming a bottom extension end and a top extension end. A driving component is installed at the bottom extension end; the top extension end is connected to the template.

[0026] Furthermore, in this embodiment, the driving component is a rotating handle 4; the rotating handle is fixedly sleeved on the outer side of the bottom extension end of the top rod. An extension rod 8 is installed at the top extension end of the top rod in this embodiment. The extension rod has a insertion hole facing the top rod, and a pin is provided on the top rod facing the extension rod. The extension rod is sleeved on the pin through the insertion hole and connected to the top rod. The insertion hole and the pin are each provided with a pin hole. The extension rod passes through both the insertion hole and the pin hole of the pin through a pin 7, allowing for a detachable connection between the extension rod and the top rod.

[0027] In addition, in this embodiment, the extension rod on the side away from the top rod is connected to the template, and a top support 9 is installed between the extension rod and the template. In this embodiment, the extension rod and the top support are connected by external threads, and the top support is connected by internal threaded holes. The top support is installed on the extension rod through the internal threaded holes, and the external threaded rod is rotatably connected to the extension rod.

[0028] Working Principle: In this embodiment, the concrete floor slab opening formwork device is used by first selecting a suitable formwork based on the shape and dimensions of the opening in the concrete floor slab 11. Then, the height of the concrete floor slab is measured, and an extension rod of suitable length is selected. Next, the formwork device components are assembled. First, the support frame is assembled by evenly distributing the four legs at the four corners of the base. Then, connecting rods are installed between adjacent legs to strengthen the support force of the legs and the load-bearing capacity of the base. Next, a sleeve is installed on the base, and the top rod is threadedly installed inside the sleeve. Then, an extension rod is installed on the top extension end of the top rod, and a top support is installed. The top rod is driven to rotate by manually turning the rotating handle, causing the extension rod and top support to lift towards the opening side of the floor slab.

[0029] After the top support is a certain height away from the floor slab opening, place the formwork on top of the top support. Then rotate the top support to fine-tune the distance between the formwork and the floor slab opening until the formwork fits the opening. Finally, the personnel are removed from the height and, by rotating the rotating handle, the formwork is finally stopped at the floor slab opening according to the top support requirements to seal the opening. Then, the subsequent pouring of concrete into the opening and the curing after pouring can be carried out.

[0030] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A formwork hoisting device for a planar opening in a concrete floor slab, comprising a formwork, a support frame, and a top support assembly, characterized in that: The top support assembly includes a top rod and a driving component; the bracket is installed below the floor opening, the top rod is installed on the bracket via the driving component, and a template is installed on the other end of the top rod away from the bracket. The template fits into the floor opening, and the top rod is driven by the driving component to move the template toward the floor opening to stop at the floor opening.

2. The formwork hoisting device for a concrete floor slab opening according to claim 1, characterized in that: The support includes a base, legs, and connecting rods; several legs are evenly spaced and fixedly installed on the bottom of the base, and a connecting rod connects adjacent legs; the top rod is installed on the base.

3. The formwork hoisting device for a concrete floor slab opening according to claim 2, characterized in that: A sleeve is fixedly installed on the base. The sleeve has an internal thread. The push rod has an external thread on its body and is threadedly connected to the sleeve. It is installed on the base in a radially rotatable manner.

4. The formwork hoisting device for a concrete floor slab opening according to claim 3, characterized in that: The sleeve passes through the base, and the top rod passes through the sleeve, with both ends extending to the outside of the sleeve to form a bottom extension end and a top extension end; the driving component is installed at the bottom extension end; and the top extension end is connected to the template.

5. The formwork hoisting device for a concrete floor slab opening according to claim 4, characterized in that: The driving component is a rotary handle; the rotary handle is fixedly sleeved on the outer side of the bottom extension end of the top rod.

6. The formwork hoisting device for a concrete floor slab opening according to claim 1, characterized in that: An extension rod is installed on the rod body located on the side of the template, and the end of the extension rod is connected to the template.

7. A formwork hoisting device for a concrete floor slab opening according to claim 6, characterized in that: The extension rod has an insertion hole on its body facing the top rod, and the top rod has a pin on its body facing the extension rod. The extension rod is connected to the top rod by being sleeved on the pin through the insertion hole. The insertion hole and the pin are respectively provided with pin holes. The extension rod passes through both the insertion hole and the pin hole of the pin through the pin, so as to allow for a detachable connection between the extension rod and the top rod.

8. A formwork hoisting device for a planar opening in a concrete floor slab according to claim 6, characterized in that: A top support is installed between the extension rod and the template.

9. A formwork hoisting device for a planar opening in a concrete floor slab according to claim 8, characterized in that: The extension rod and the top support are connected by an external thread, and the top support is provided with an internal thread hole. The top support is installed on the extension rod through the internal thread hole and is rotatably connected to the extension rod.

10. A formwork hoisting device for a planar opening in a concrete floor slab according to claim 1, characterized in that: The shape and size of the template are adapted to the shape and size of the floor slab opening.

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