Construction site safety protection device for construction

Abstract

The utility model belongs to the technical field of security equipment, and relates to a construction site safety protection device for construction, which comprises a base plate, a cross beam plate, a U-shaped plate and a safety flat net, expansion bolts are arranged at the left end and the right end of the base plate; the front ends of the two cross beam plates are detachably connected to the left end and the right end of the base plate through bolts correspondingly. The number of the U-shaped plates is two, the two ends of one U-shaped plate are connected to the left side of the left cross beam plate, and the two ends of the other U-shaped plate are connected to the right side of the right cross beam plate; the left end of the safety flat net is connected to the left U-shaped plate, and the right end of the safety flat net is connected to the right U-shaped plate. The safety protection device is installed in the elevator shaft to prevent falling, the base plate, the stand column, the cross beam plate and the U-shaped plate form the support used for supporting and installing the safety flat net in the elevator shaft, when the safety flat net is disassembled and assembled, an operator does not need to enter the elevator shaft to conduct disassembling and assembling construction, the risk that the operator falls from a high place when entering the elevator shaft to conduct construction can be reduced, and the safety protection device is convenient to use. And the high-altitude operation fear of operators is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of security equipment technology, specifically relating to a construction site safety protection device. Background Technology

[0002] Edge protection is a basic safety measure on construction sites, designed to prevent workers and objects from falling from edges, thus avoiding accidents or damage to equipment below. According to the "Technical Specification for Safety of High-Altitude Operations in Building Construction" (JGJ80-2016), protective doors should be installed at elevator shaft openings, with a height of no less than 1.5 meters. Safety nets should be installed every two floors and no more than 10 meters inside the elevator shaft. According to the "Several Provisions on Preventing Falls from Heights in Building Construction," workers must wear safety belts when installing and dismantling safety nets in elevator shafts. However, on construction sites, existing safety nets in elevator shafts generally require workers to wear safety belts to enter the shaft for installation and dismantling. This poses a risk of falls from height and may also cause workers to develop a fear of working at heights. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model proposes a construction site safety protection device. This safety protection device is installed inside the elevator shaft to prevent falls. During installation and disassembly, workers do not need to enter the elevator shaft, effectively reducing the risk of workers falling from heights.

[0004] This utility model is achieved through the following technical solution:

[0005] A construction site safety protection device includes a base plate, a crossbeam plate, a U-shaped plate, and a safety net;

[0006] Both ends of the base plate are provided with expansion bolts for anchoring the base plate to the floor slab at the elevator shaft opening. The base plate serves as the load-bearing foundation for the entire safety protection device.

[0007] There are two crossbeams, both of which extend in the front-to-back direction and are arranged in parallel intervals in the left-to-right direction. The front ends of the two crossbeams are detachably connected to the left and right ends of the base plate by bolts. The rear ends of the crossbeams can extend into the shaft from the elevator shaft opening. The base plate provides support for the crossbeams.

[0008] Two U-shaped plates are provided. One U-shaped plate is connected to the left side of the left crossbeam plate at both ends, and the other U-shaped plate is connected to the right side of the right crossbeam plate at both ends. The openings of the two U-shaped plates face each other and are positioned opposite each other. When installed in the elevator shaft, the outer walls of the two U-shaped plates are respectively attached to or close to the inner left and right walls of the elevator shaft to support the installation of the safety net.

[0009] The left end of the safety net is connected to the left U-shaped plate, and the right end is connected to the right U-shaped plate;

[0010] The safety protection device consists of a base plate, a crossbeam plate, and a U-shaped plate, which are used to support the installation of the safety net in the elevator shaft. When installing and removing the safety net in the elevator shaft, there is no need for workers to enter the elevator shaft to carry out the work. This can reduce the risk of workers falling from heights when entering the elevator shaft to carry out the work, as well as reduce the fear of workers working at heights.

[0011] Furthermore, support plates extending vertically are provided between the front and rear ends of the U-shaped plate on the left and between the front and rear ends of the left crossbeam plate, and between the front and rear ends of the U-shaped plate on the right and between the front and rear ends of the right crossbeam plate. The top and bottom ends of the support plates are fixedly connected to the U-shaped plate and the crossbeam plate, respectively, so that the height of the U-shaped plate is higher than the height of the crossbeam plate. The U-shaped plate is located above the crossbeam plate, so that the safety net installed between the two U-shaped plates is located above the two crossbeam plates, preventing objects falling on the safety net from hitting the crossbeam plate and causing damage to the objects or the crossbeam plate, thus ensuring the cushioning effect of the safety net on falling objects.

[0012] Furthermore, the safety protection device also includes a pull rope for pulling the crossbeam plate. The rear end of the pull rope is connected to the rear end of the crossbeam plate, and its front end is connected to the wall of the elevator shaft. The pull rope is inclined with the front higher than the rear. By pulling the rear end of the crossbeam plate with the pull rope, the stability of the crossbeam plate can be improved and the load-bearing capacity can be increased.

[0013] Furthermore, columns are welded to the top left and top right ends of the substrate, and each column is provided with at least one expansion bolt for anchoring the column to the front wall of the elevator shaft. The columns are reinforced to improve the stability of the substrate during installation. The front end of the pull rope is connected to the top of the column.

[0014] Furthermore, the rear end of the crossbeam plate and the top end of the column are both provided with a first hook for hooking the pull rope, and both ends of the pull rope are formed with a ring-shaped hook that can be hooked on the first hook, so that the pull rope can be easily installed and removed.

[0015] Furthermore, a T-shaped plate is welded to the bottom front end of each of the beam plates. The front end of the T-shaped plate abuts against the rear side wall of the base plate, and the vertical front side wall of the T-shaped plate is used to abut against the floor slab at the elevator shaft opening. The T-shaped plate serves as a reinforcing plate for the beam plate. During installation, the T-shaped plate abuts against the floor slab to form a fulcrum, which can improve the bending resistance and load-bearing capacity of the beam plate.

[0016] Furthermore, each of the U-shaped plates has several second hooks welded to its top surface for attaching a safety net. The edge of the safety net is hooked and connected to the second hooks on the U-shaped plate, allowing it to be disassembled, maintained, and replaced.

[0017] Furthermore, the edge of the safety net is connected to the U-shaped plate by several cable ties or wires, which can improve the connection strength between the safety net and the U-shaped plate and improve the stability of the safety net.

[0018] As can be seen from the above technical solution, the construction site safety protection device provided by this utility model has the following beneficial effects:

[0019] This safety protection device is installed inside the elevator shaft to prevent falls. It consists of a base plate, two columns, two crossbeams, and two U-shaped plates, forming a support frame for installing the safety net inside the elevator shaft. The two U-shaped plates spread the safety net inside the elevator shaft, enabling its installation. When installing and removing the safety net inside the elevator shaft, workers do not need to enter the elevator shaft. The crossbeams extend the U-shaped plates and safety net into the elevator shaft, reducing the risk of falls from height for workers entering the elevator shaft and minimizing their fear of working at height. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention (without a safety net).

[0022] Figure 2 This is an exploded structural diagram of Embodiment 1 of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the usage state of Embodiment 1 of this utility model.

[0024] Figure 4 This is a cross-sectional structural diagram of the usage state of Embodiment 1 of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0026] Figure 6 This is an exploded structural diagram of Embodiment 2 of the present invention.

[0027] Figure 7 This is a cross-sectional structural diagram of the second embodiment of the present invention in use.

[0028] The components in the diagram are named as follows: 1. Base plate; 2. Horizontal beam plate; 3. Column; 4. U-shaped plate; 5. Pull rope; 6. First hook; 7. Second hook; 8. T-shaped plate; 9. Expansion bolt; 10. Safety net; 11. Elevator shaft opening; 12. Floor slab; 13. Support plate. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example 1

[0032] A construction site safety protection device, such as Figure 1 and Figure 2 As shown, it is mainly composed of a base plate 1, a crossbeam plate 2, a U-shaped plate 4, a safety net 10, a rope 5, and a column 3.

[0033] The base plate 1 is made of U-shaped steel, and expansion bolts 9 are provided at both ends of the base plate 1, such as... Figure 3 and Figure 4 As shown, during installation, the bottom of the groove is attached to the front wall at the elevator shaft opening 11, and the left and right ends of the base plate 1 are anchored to the floor slab 12 by expansion bolts 9; the base plate 1 serves as the load-bearing foundation of the entire safety protection device.

[0034] The column 3 is made of U-shaped steel, such as Figure 1 As shown, the bottom ends of the two columns 3 are welded to the top left and top right ends of the base plate 1, respectively. Each column 3 has an expansion bolt 9 at its top. Figure 3 and Figure 4 As shown, when the column 3 is installed, its groove bottom is attached to the front wall of the elevator shaft opening 11, the side of the column 3 is aligned with the inner side of the elevator shaft opening 11, and the top of the column 3 is anchored to the front wall of the elevator shaft opening 11 by expansion bolts 9; the column 3 is reinforced to improve the stability of the base plate 1 during installation.

[0035] It should be noted that the method of anchoring the base plate 1 and the column 3 with expansion bolts 9 is a conventional technique that has been widely used in the construction industry. For example, the bottom of the edge guardrail is anchored to the ground with expansion bolts 9, as well as other anchoring structures on the wall.

[0036] like Figure 1 and Figure 2 As shown, there are two crossbeams 2. Both crossbeams 2 are made of L-shaped steel plates. Both crossbeams 2 extend in the front-to-back direction and are arranged in parallel intervals in the left-to-right direction. The two crossbeams 2 are opposite each other. The front ends of the two crossbeams 2 are detachably connected to the left and right ends of the base plate 1 by bolts. The rear ends of the crossbeams 2 can extend into the shaft from the elevator shaft opening 11. The base plate 1 provides support for the crossbeams 2.

[0037] Specifically, such as Figure 1 and Figure 2 As shown, the left and right ends of the base plate 1 and the front ends of the two crossbeam plates 2 are provided with insertion holes for bolts to pass through. The bottom surface of the crossbeam plate 2 is attached to the top surface of the base plate 1. The bolts are inserted vertically and locked with locking nuts. The bolts and nuts are high-strength bolts and high-strength nuts, which are conventional building materials.

[0038] like Figure 1 and Figure 2 As shown, the pull rope 5 consists of two steel wire ropes. The rear end of the pull rope 5 is connected to the rear end of the crossbeam plate 2, and its front end is connected to the top of the column 3. Figure 4 As shown, the pull rope 5 is inclined with the front higher than the back. By using the pull rope 5 to pull the rear end of the crossbeam plate 2, the stability of the crossbeam plate 2 can be improved, the bending resistance of the crossbeam plate 2 can be improved, and the load-bearing capacity of the crossbeam plate 2 can be improved.

[0039] Specifically, such as Figure 1 and Figure 2 As shown, each of the beam plate 2 has a first hook 6 welded to its rear top surface and the top side of each column 3 for hooking the pull rope 5. Both ends of the pull rope 5 are knotted into a loop hook that can be hooked onto the first hook 6, making the pull rope 5 easy to assemble and disassemble. Specifically, the first hook 6 is made of bent steel bars, one end of which is bent into an L-shape and welded to the beam plate 2 or column 3 to increase the welding area and improve the connection strength. The other end of the first hook 6 is bent into an unsealed loop structure for hooking the loop hook at the end of the pull rope 5.

[0040] like Figure 1 and Figure 2As shown, there are two U-shaped plates 4, which are welded from L-shaped steel plates and have a flat top surface. The two ends of the left U-shaped plate 4 are welded to the left side wall of the left crossbeam plate 2, and the two ends of the right U-shaped plate 4 are welded to the right side wall of the right crossbeam plate 2. The openings of the two U-shaped plates 4 face each other and are opposite each other. When installed in the elevator shaft, the outer walls of the two U-shaped plates 4 are respectively attached to or close to the left inner wall and right inner wall of the elevator shaft to support the installation of the safety net 10.

[0041] The safety net 10 is made of nylon, vinylon, polyester, or other materials, which are existing conventional building materials and are widely used in elevator shafts, such as... Figure 3 As shown, the left end of the safety net 10 is connected to the left U-shaped plate 4, and its right end is connected to the right U-shaped plate 4; based on the safety net 10 being laid on the top surface of the crossbeam plate 2, the pull rope 5 passes through the safety net 10 to form a diagonal pull;

[0042] Specifically, such as Figure 1 and Figure 2 As shown, each of the U-shaped plates 4 has several second hooks 7 welded to its top surface for hooking the safety net 10. The hooks are spaced apart on the top surface of the U-shaped plate 4 and are U-shaped. The edge of the safety net 10 is hooked and connected to the second hooks 7 on the U-shaped plate 4, so that it can be disassembled, maintained and replaced. Specifically, the second hook 7 is made of bent steel bars. One end of the hook is bent into an L-shape and welded to the top surface of the U-shaped plate 4 to increase the welding area and improve the connection strength. The other end of the hook 7 is bent into an unsealed ring structure for hooking the safety net 10.

[0043] As a preferred embodiment, in this example, Figure 1 and Figure 2 As shown, a T-shaped plate 8 is welded to the bottom front end of each of the beam plates 2. The T-shaped plate 8 is made of stainless steel square tubing or H-beams. The front end of the T-shaped plate 8 abuts against the rear side wall of the base plate 1, and the vertical front side wall of the T-shaped plate 8 abuts against the floor slab 12 at the elevator shaft opening 11. The T-shaped plate 8 serves as a reinforcing plate for the beam plate 2. Figure 4 As shown, during installation, the T-shaped plate 8 abuts against the floor slab 12 to form a fulcrum, which can improve the bending resistance and load-bearing capacity of the beam plate 2. In addition, during use, the vertical front side wall of the T-shaped plate 8 abuts against the floor slab 12 at the elevator shaft opening 11, which can also prevent the beam plate 2 from rotating in the horizontal plane.

[0044] In a preferred embodiment, the edge of the safety net 10 is connected to the U-shaped plate 4 by several cable ties or wires (not shown in the figure), which can improve the connection strength between the safety net 10 and the U-shaped plate 4 and improve the stability of the safety net 10.

[0045] The working principle of this embodiment:

[0046] When installing the safety net 10 inside the elevator shaft, the base plate 1 and the two columns 3 are anchored to the building structure using expansion bolts 9, serving as a load-bearing foundation. The left end of the safety net 10 is connected to the left U-shaped plate 4, and its right end is connected to the right U-shaped plate 4. Based on the flexibility of the safety net 10, when installing the crossbeam plate 2, two crossbeam plates 2 can be installed sequentially. The two crossbeam plates 2 and the U-shaped plates 4 installed on them are extended into the elevator shaft from the elevator shaft opening 11. First, adjust the left crossbeam plate 2 and the left U-shaped plate 4 installed on it so that the outer wall of the left U-shaped plate 4 is close to or against the left inner wall of the elevator shaft. Then, adjust the front end of the left crossbeam plate 2. The safety net 10 is fixed to the left end of the base plate 1 with bolts. Then, the right crossbeam plate 2 and the right U-shaped plate 4 installed on it are adjusted so that the outer wall of the right U-shaped plate 4 is close to or against the right inner wall of the elevator shaft. The front end of the right crossbeam plate 2 is fixed to the right end of the base plate 1 with bolts. The base plate 1, two columns 3, two crossbeam plates 2 and two U-shaped plates 4 constitute a bracket for supporting the installation of the safety net 10 in the elevator shaft. When installing and dismantling the safety net 10 in the elevator shaft, there is no need for workers to enter the elevator shaft for construction. This can reduce the risk of workers falling from heights when entering the elevator shaft for construction, and reduce the fear of working at heights among workers.

[0047] Example 2

[0048] A construction site safety protection device differs from Embodiment 1 in that:

[0049] like Figures 5 to 7 As shown, support plates 13 extending vertically are provided between the front and rear ends of the U-shaped plate 4 on the left and the front and rear ends of the left crossbeam plate 2, and between the front and rear ends of the U-shaped plate 4 on the right and the front and rear ends of the right crossbeam plate 2. There are a total of four support plates 13, all made of L-shaped steel plates. The top and bottom ends of the support plates 13 are fixedly connected to the U-shaped plate 4 and the crossbeam plate 2 respectively (such as by welding or bolting in a conventional connection method), so that the height of the U-shaped plate 4 is higher than the height of the crossbeam plate 2. The U-shaped plate 4 is located above the crossbeam plate 2, so that the safety net 10 installed between the two U-shaped plates 4 is located above the two crossbeam plates 2, avoiding objects falling on the safety net 10 from hitting the crossbeam plate 2 and causing damage to the objects or the crossbeam plate 2, and ensuring the cushioning effect of the safety net 10 on falling objects.

[0050] In addition, in the above embodiments, the U-shaped plate 4, T-shaped plate 8 and support plate 13 can also be made of aluminum alloy material in order to control the weight of the bracket.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A construction site safety protection device for a construction site, comprising a base plate (1), characterized in that: Expansion bolts (9) are arranged at the left and right ends of the base plate (1) for anchoring the base plate (1) to the floor (12) at the elevator shaft mouth (11); The horizontal beam plates (2) are arranged at the left and right ends of the base plate (1) and are connected to the base plate (1) by bolts. The U-shaped plates (4) are arranged at the left and right ends of the base plate (1) and are connected to the base plate (1) by bolts. The safety flat net (10) is arranged at the left and right ends of the base plate (1) and is connected to the base plate (1) by bolts.

2. The construction site safety barrier of claim 1, wherein: The support plates (13) are arranged between the left and right ends of the U-shaped plates (4) and the left and right ends of the horizontal beam plates (2).

3. A construction site safety barrier according to claim 1 or 2, characterised in that: The safety protection device further comprises a pull rope (5) for pulling the horizontal beam plate (2), the rear end of the pull rope (5) is connected to the rear end of the horizontal beam plate (2), and the front end of the pull rope (5) is connected to the wall of the elevator shaft mouth (11) to form a cable-stayed structure.

4. The construction site safety barrier of claim 3, wherein: The left and right ends of the base plate (1) are welded with vertical columns (3), and at least one expansion bolt (9) is arranged on each vertical column (3) for anchoring the vertical column (3) to the front wall of the elevator shaft mouth (11), and the front end of the pull rope (5) is connected to the top end of the vertical column (3).

5. A construction site safety barrier according to claim 4, wherein: The rear end of the horizontal beam plate (2) and the top end of the vertical column (3) are provided with a first hook (6) for hooking the pull rope (5), and the two ends of the pull rope (5) are provided with a loop-shaped hooking part for hooking the first hook (6).

6. The construction site safety barrier of claim 1 or 2, wherein: The front end of each horizontal beam plate (2) is welded with a T-shaped plate (8), the front end of the T-shaped plate (8) abuts against the rear wall of the base plate (1), and the vertical front wall of the T-shaped plate (8) is used for abutting against the floor (12) at the elevator shaft mouth (11).

7. The construction site safety barrier of claim 1, wherein: The top surface of each U-shaped plate (4) is welded with a plurality of second hooks (7) for hooking the safety flat net (10), and the edges of the safety flat net (10) are connected to the second hooks (7) on the U-shaped plate (4).

8. The construction site safety barrier of claim 7, wherein: The edges of the safety flat net (10) and the U-shaped plate (4) are connected by a plurality of straps or wires.

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