An adjustable opening protection device and its usage method

Abstract

The application discloses an adjustable hole protection device, which comprises two members hinged to each other, each member comprising a connecting rod and two supporting plates, the connecting rod being composed of two telescopic arms, the telescopic arms comprising a bent square steel with an open end and an inner square steel, the open end of the bent square steel being provided with an inwardly bent reverse stopping part, the inner square steel extending into the bent square steel through the open end, the surface of the inner square steel being provided with a rack matched with the reverse stopping part of the bent square steel, and the two supporting plates being fixedly connected to the end portions of the inner square steel respectively. The application further discloses a use method of the adjustable hole protection device. The application can satisfy holes of various sizes and shapes, and can make hole protection more convenient and fast, and completely need not to pre-bury steel bars, steel pipes and the like for later erection of protection. An operator only needs to adjust the length of the telescopic arms of the application, so as to freely adjust the system frame, and then easily place the device above the hole for covering.

Description

Technical Field

[0001] This invention relates to an adjustable opening protection device and its usage method, belonging to the field of reserved construction opening protection technology. Background Technology

[0002] During construction, various openings are typically left on construction sites to facilitate construction or solve material transportation problems. These openings include, but are not limited to, elevator shafts, ventilation ducts, and cable shafts. These openings must be sealed promptly during construction to prevent safety hazards from falling building materials and potential injuries or fatalities from accidental falls. Currently, the protective sealing of these pre-reserved construction openings often involves methods such as pre-installing reinforcing bars, embedding steel pipes around the opening, or directly erecting scaffolding. However, there is currently no convenient, quick, and safe method for protecting irregular openings. Existing practices are complex and time-consuming, and there are no reliable methods for testing the quality of the protection, making it difficult to guarantee construction quality. This does not meet the original intention of safe, convenient, and quick opening protection. Summary of the Invention

[0003] The present invention aims to provide an adjustable opening protection device, which can adjust the length and width of the device according to the size and shape of the opening, effectively solving the problem of protection of reserved openings during construction.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] An adjustable opening protection device includes two components hinged together by pins. Each component includes a connecting rod and two support plates. The connecting rod consists of two telescopic arms. Each telescopic arm includes a bent square steel with an open end and an inner square steel. The open end of the bent square steel is provided with an inwardly bent anti-reverse part. The inner square steel extends into the bent square steel through the open end. The surface of the inner square steel is provided with a toothed rack that cooperates with the anti-reverse part of the bent square steel, so that the telescopic arm can only extend and cannot retract. The two support plates are respectively fixed to the ends of the inner square steel.

[0006] Furthermore, the bent square steel is provided with an outer limiting block at the end near the pallet, and the inner square steel is provided with an inner limiting block at the end away from the pallet to prevent the inner square steel from being pulled out.

[0007] Furthermore, the rack is positioned at the middle of the inner square steel along its length.

[0008] Furthermore, the tray is right-angled in shape.

[0009] Furthermore, the cross-sectional shape of the pallet is an inverted Z-shape. The top of the pallet is used to hold the template, and the bottom of the pallet is used to press against the edge of the opening.

[0010] Furthermore, the connecting rods of the two components are hinged by pins, with the hinged part located between the two telescopic arms of the connecting rod.

[0011] The present invention also provides a method for using the above-mentioned adjustable opening protection device, comprising the following steps:

[0012] S1. Adjust the length of the telescopic arm according to the size of the opening on site, and place the four support plates inside the opening;

[0013] S2. Cut the template according to the shape of the opening, and lay the cut template in the area enclosed by the four pallets;

[0014] S3. After the opening is sealed, remove the template, lift the anti-reverse part of the bent square steel, and retract the telescopic arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] This invention is applicable to openings of various sizes and shapes. Using this invention makes opening protection more convenient and faster, completely eliminating the need for pre-embedded reinforcing bars or steel pipes for later installation. It achieves the goals of multiple functions, wide applicability, quick installation, and high safety and efficiency. Operators only need to adjust the length of the telescopic arm to freely adjust the system frame, easily placing the device above the opening for coverage. Attached Figure Description

[0017] Figure 1 This is a plan view of a preferred embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the application of a preferred embodiment of the present invention.

[0019] Figure 3 This is a plan view of the component involved in the present invention.

[0020] Figure 4 For along Figure 3 Cross-sectional view at point 1-1.

[0021] Figure 5 This is a plan view of the pallet involved in the present invention.

[0022] Figure 6 For along Figure 5 Cross-sectional view at point 3-3.

[0023] Figure 7 This is a schematic diagram of the telescopic arm involved in the present invention.

[0024] Figure 8 This is a top view of the bent square steel involved in this invention.

[0025] Figure 9 For along Figure 8 Cross-sectional view at point 5-5.

[0026] Figure 10 This is a top view of the inner square steel involved in the present invention.

[0027] Figure 11 For along Figure 10 Cross-sectional view at point 6-6.

[0028] Figure 12 This is a cross-sectional view of the bent square steel and the inner square steel involved in the present invention. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The objectives, technical solutions, and advantages of the present invention will become clearer from the following description. It should be noted that the described embodiments are preferred embodiments of the present invention, but not all embodiments.

[0030] Combination Figure 1 As shown, an adjustable opening protection device includes two hinged components 1.

[0031] Combination Figure 3 , Figure 4 as well as Figures 7 to 12 Each component 1 includes a connecting rod 11 and two support plates 15. The connecting rod 11 is composed of two telescopic arms 12. The connecting rods 11 of the two components are hinged by pins 2 (see reference). Figure 2 The pin hole 2a is located between the two telescopic arms 12 of the connecting rod. Each telescopic arm 12 includes a bent square steel 13 with an open end and an inner square steel 14. The open end of the bent square steel 13 has an inwardly bent anti-reverse part 13a. The inner square steel 14 extends into the bent square steel 13 through its open end. A rack 15 is provided at the middle position along the length direction of the surface of the inner square steel 14, which cooperates with the anti-reverse part 13a at the middle position of the bent square steel, ensuring that the telescopic arm can only extend and cannot retract. An outer limiting block 13b is provided at the end of the bent square steel 13 near the support plate, and an inner limiting block 14a is provided at the end of the inner square steel 14 away from the support plate, preventing the inner square steel from being pulled out. The two support plates are respectively fixed to the ends of the inner square steel.

[0032] Combination Figure 5 , Figure 6 As shown, the tray 15 is right-angled in shape. The tray 12 has a cross-sectional shape that is tilted into a Z-shape. (Reference) Figure 2 The top of the support plate 12 is used to hold the template 10, and the bottom of the support plate 12 is used to press against the edge of the opening.

[0033] The method of using the adjustable opening protection device of the present invention includes the following steps:

[0034] S1. Adjust the length of the telescopic arm according to the size of the opening on site, and place the four support plates inside the opening;

[0035] S2. Cut the template according to the shape of the opening, and lay the cut template in the area enclosed by the four pallets;

[0036] S3. After the opening is sealed, remove the formwork, lift the anti-reverse section of the bent square steel, and retract the telescopic boom.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Obviously, any person skilled in the art can easily conceive of substitutions or variations based on the above embodiments to obtain other embodiments, and these should all be covered within the scope of protection of the present invention.

Claims

1. A method for using an adjustable opening protection device, characterized in that: the adjustable opening protection device comprises two components hinged by a pin, each component comprises a connecting rod and two brackets, the connecting rod is composed of two telescopic arms, the telescopic arm comprises a bent square steel with an open end and an inner square steel, the open end of the bent square steel is provided with an inwardly bent check part, the inner square steel extends into the bent square steel through the open end, the surface of the inner square steel is provided with a rack matched with the check part of the bent square steel, so that the telescopic arm can only be extended and cannot be retracted, and the two brackets are respectively fixed to the end of the inner square steel, an outer limiting block is arranged at the end of the bent square steel close to the bracket, the inner square steel is provided with an inner limiting block at the end away from the bracket to prevent the inner square steel from being pulled out, the bracket is in the shape of a right angle, and the cross section of the bracket is in the shape of a Z-shaped letter placed upside down, the connecting rods of the two components are hinged by a pin, and the hinged part is arranged between the two telescopic arms of the connecting rod, the method for using the adjustable opening protection device comprises the following steps: S1. Adjusting the length of the telescopic arm according to the size of the opening on site, and clamping the four brackets inside the opening; S2. Cutting the template according to the shape of the opening, and laying the cut template in the area surrounded by the four brackets; S3. After the opening is closed, removing the template and lifting the check part of the bent square steel to retract the telescopic arm.

2. The method for using the adjustable opening protection device according to claim 1, characterized in that: the rack of the adjustable opening protection device is arranged at the middle position of the inner square steel in the length direction.

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