Protective device for pay-off hole

Abstract

The utility model belongs to the technical field of construction site protection tools, and particularly relates to a protection device for a pay-off hole, which comprises a protection cover plate, a springback assembly and a fixing assembly. A rebounding assembly is arranged in the center of the bottom of the protective cover plate; the springback assembly comprises a sleeve, a pull rod, a spring and a movable rod; the sleeve is arranged in the center of the bottom of the protective cover plate; the pull rod is sleeved in the sleeve, and the bottom of the pull rod extends out of the sleeve; the spring sleeves the pull rod and is positioned in the sleeve; the movable rod is hinged to the pull rod; the fixing assemblies are arranged on the two sides of the bottom of the protective cover plate and connected with the movable rods.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction site protection tools, and in particular relates to a protection device for a wire laying hole. Background Art

[0002] Building is a general term for buildings and structures. It is an artificial environment created by people to meet the needs of social life, using the material and technical means they have mastered, and applying certain scientific laws and aesthetic principles. In the process of high-rise building construction, hole protection is extremely important. Among them, large holes and elevator shaft openings are protected by tool-type standardized safety protection enclosures. However, the safety protection of small holes such as floor wiring holes and reserved holes for water pipes is often easily overlooked. According to the relevant requirements of the "Technical Specifications for Safety of High-altitude Operations in Construction" (J2227-2016): When the short side length of a non-vertical hole is 25mm~500mm, it should be covered with a cover plate with a bearing capacity that meets the use requirements. The cover plate should be placed evenly around the edges and should be prevented from shifting. The traditional protection method uses wooden square templates to customize the pallets according to the size of the hole for hard protection. Although this method is simple to operate and convenient to construct, it has the disadvantages of not being reusable, easy to move, and inconvenient to open.

[0003] During the construction of the main structure, the size of the reserved holes for construction of the floor structure plate is generally 150mm×150mm (or 100mm×100mm); the plugging cover of the plugging hole should be firm and reliable at ordinary times, but it must be fully opened when laying out the wires, and it must be plugged immediately after the laying out is completed. At present, most plugging holes for laying out wires are sealed with simple wooden covers. Although wooden covers made of square wood and templates can prevent falling objects, they are easy to loosen, unreliable, and can be easily moved, which can easily cause safety hazards and increase the frequency of daily inspections. Ordinary wooden covers are basically discarded as waste and cannot be used in a turnover manner.

[0004] Based on the above problems, the utility model proposes a protective device for a wire-laying hole. Utility Model Content

[0005] The purpose of the utility model is to provide a protective device for a wire-laying hole. In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A protective device for a wire-laying hole, comprising a protective cover plate, a rebound device, and a fixing device;

[0007] The rebound device is arranged at the center of the bottom of the protective cover plate;

[0008] The rebound device comprises a sleeve, a pull rod, a spring and a movable rod;

[0009] The sleeve is arranged at the center of the bottom of the protective cover plate;

[0010] The pull rod is sleeved in the sleeve, and the bottom of the pull rod extends out of the sleeve;

[0011] The spring is sleeved on the pull rod and is located in the sleeve;

[0012] The movable rod is hinged to the bottom of the pull rod;

[0013] The fixing devices are arranged on both sides of the bottom of the protective cover plate, and the fixing devices are connected to the movable rod.

[0014] Furthermore, a through hole is provided at the center of the protective cover plate, and sealing pieces with holes are provided at the top and bottom of the sleeve, and the through hole and the hole of the sleeve sealing piece are arranged opposite to each other.

[0015] Furthermore, a short tube is provided below the sleeve, and sealing pieces with holes are provided at the top and bottom of the short tube. The bottom end of the pull rod passes through the holes of the sealing piece at the bottom of the sleeve and the holes of the sealing piece at the bottom of the short tube and is connected to the movable rod.

[0016] Furthermore, the sleeve is provided with L-shaped slots symmetrically downward from the top.

[0017] Furthermore, a horizontal blocking rod is provided at the top of the pull rod, a first U-shaped groove is provided at the center of the horizontal blocking rod, and the first U-shaped groove is located below the hole of the sealing piece at the top of the sleeve.

[0018] Furthermore, an upper limit lever and a lower limit lever are provided on the pull rod, the upper limit lever is located above the blocking piece with a hole on the top of the short tube, and the lower limit lever is located below the blocking piece with a hole on the top of the short tube.

[0019] Furthermore, two movable rods are provided, the two movable rods are provided in a V shape, and the two movable rods are hinged to the bottom end of the pull rod.

[0020] Furthermore, each of the movable rods is provided with a slide groove, and the fixing device is slidably connected to the slide groove.

[0021] Further, the fixing device comprises an L-shaped fixing rod and a bolt;

[0022] Two L-shaped fixing rods are provided, and the two L-shaped fixing rods are symmetrically arranged on both sides of the bottom of the protective cover plate;

[0023] The horizontal bar of each L-shaped fixing rod is connected to the bottom of the protective cover plate, and the bottom of the vertical bar of each L-shaped fixing rod is connected to the sliding groove through the bolt.

[0024] Furthermore, the invention also includes a disassembly rod, one end of which is provided with a handle, and the other end of which is provided with a second U-shaped groove, and the second U-shaped groove matches the first U-shaped groove.

[0025] The utility model adopts the above technical solution, which has the following advantages:

[0026] The utility model is a protective device for the wire-laying hole. Compared with the existing technology, when the protective cover is installed on site, the spring is pressed down to rotate the rebound device, so that the movable rod connected to the fixing device is stretched and fixed on the bottom side wall of the reserved hole. When the protective cover is removed, the pull rod is rotated in the opposite direction to release the spring force. After the connection between the rebound device and the fixing device is loosened, the protective cover can be removed. The device can achieve the function of safety protection, can be quickly disassembled and assembled, and can be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the protective device of the wire-laying hole of the utility model after installation.

[0028] Figure 2 It is a structural schematic diagram of the rebound device of the utility model.

[0029] Figure 3 It is a schematic diagram of the structure of the pull rod device of the utility model.

[0030] Figure 4 It is a schematic diagram of the protective cover structure of the utility model.

[0031] Figure 5 It is a schematic diagram of the installation structure of the fixing device of the utility model.

[0032] Figure 6 It is a schematic diagram of the L-shaped slot opening structure of the utility model.

[0033] Figure 7 It is a structural schematic diagram of a disassembly rod of the utility model.

[0034] The figure numbers are as follows: 1-protective cover, 101-through hole, 2-rebound device, 201-sleeve, 202-pull rod, 2021-horizontal block rod, 2022-first U-shaped groove, 2023-upper limit block rod, 2024-lower limit block rod, 203-spring, 204-movable rod, 2041-slide groove, 205-short tube, 206-L-shaped slot, 3-fixing device, 301-L-shaped fixing rod, 302-bolt, 4-disassembly rod, 401-handle, 402-second U-shaped groove. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings to describe the preferred embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0036] like Figure 1-2 A protective device for a wire-laying hole comprises a protective cover plate 1, a rebound device 2, and a fixing device 3; the rebound device 2 is arranged at the bottom center of the protective cover plate 1; the rebound device 2 comprises a sleeve 201, a pull rod 202, a spring 203, and a movable rod 204; the sleeve 201 is arranged at the bottom center of the protective cover plate 1; the pull rod 202 is sleeved in the sleeve 201, and the bottom of the pull rod 202 extends out of the sleeve 201; the spring 203 is sleeved on the pull rod 202 and is located in the sleeve 201; the movable rod 204 is hinged to the bottom of the pull rod 202; the fixing device 3 is arranged on both sides of the bottom of the protective cover plate 1, and the fixing device 3 is connected to the movable rod 204.

[0037] like Figure 4 Specifically, a through hole 101 is provided at the center of the protective cover plate 1, and plugging pieces with holes are provided at the top and bottom of the sleeve 201, and the through hole 101 and the holes of the plugging pieces of the sleeve 201 are arranged opposite to each other.

[0038] As a preferred embodiment, the protective cover 1 uses a 200mm×200mm square cover. In order to achieve the warning function of the cover, a layer of red and white warning stickers is pasted on the surface of the cover, and a circular hole with a diameter of 10mm is uniformly opened in the center of the cover for a special disassembly rod to open and close the rebound device.

[0039] When the protective cover is installed on site, the spring is pressed down at the through hole to rotate the rebound device, so that the movable rod connected to the fixing device is stretched out and fixed on the bottom side wall of the reserved hole. When the protective cover is removed, the pull rod is rotated in the opposite direction to release the spring force. After the connection between the rebound device and the fixing device is loosened, the protective cover can be removed.

[0040] like Figure 1-2 Specifically, a short tube 205 is provided below the sleeve 201, and plugging pieces with holes are provided at the top and bottom of the short tube 205, and the bottom end of the pull rod 202 passes through the holes of the plugging piece at the bottom of the sleeve 201 and the holes of the plugging piece at the bottom of the short tube 205 and is connected to the movable rod 204.

[0041] like Figure 6 Specifically, the sleeve 201 is symmetrically provided with an L-shaped slot 206 along the top and downward.

[0042] As a preferred embodiment, the sleeve 201 is a KGB steel pipe with a length of 100 mm and a diameter of 15 mm. An L-shaped symmetrical groove with a length of 30 mm is opened downward from the top of the KGB steel pipe, and the L-shaped groove is through-connected.

[0043] When installing the protective cover, the L-shaped slot is used to fix the force storage spring to ensure that the protective cover is firmly fixed to the side wall of the concrete hole after the movable rod at the bottom of the rebound device is stretched. The spring is placed on the outside of the solid pull rod, and a horizontal stopper is welded on the upper part of the solid pull rod to support the upper part of the spring. The pull rod with the spring is embedded in the casing. The bottom of the casing is welded and sealed with a steel sheet with a round hole in the center to support the bottom of the spring. The solid pull rod passes through the round hole of the welded steel sheet at the bottom of the casing and is inserted into the short tube with upper and lower seals at the bottom. The upper limit stopper and the lower limit stopper are welded at the end of the solid pull rod to limit the position, ensuring that the bottom short tube is in a stationary state when the pull rod rotates. A short steel sheet with a round hole is welded at the bottom of the short tube, and two movable rods with slide grooves at the ends are connected with bolts. The assembled rebound device is installed around the through hole at the bottom of the protective cover with self-tapping screws.

[0044] like Figure 3 Specifically, a horizontal blocking rod 2021 is disposed at the top of the pull rod 202 , a first U-shaped groove 2022 is disposed at the center of the horizontal blocking rod 2021 , and the first U-shaped groove 2022 is located below the hole of the plugging piece at the top of the sleeve 201 .

[0045] like Figure 7 Specifically, it also includes a disassembly rod 4, one end of which is provided with a handle 401, and the other end of which is provided with a second U-shaped groove 402, and the second U-shaped groove 402 matches the first U-shaped groove 2022.

[0046] In order to improve the protection safety of the self-locking protective cover, a special person uses a special disassembly rod 4 to install and remove it. The special disassembly rod 4 is made of round steel with a length of 120mm and a diameter of 8mm. A second U-shaped groove 402 is opened at one end of the round steel, and a T-handle 401 with a length of 60mm is welded with round steel of the same diameter at the other end. When the protective cover is installed on site, the special disassembly rod is inserted from the through hole, and the second U-shaped groove at the bottom of the special disassembly rod matches the first U-shaped groove on the pull rod. Then the spring is pressed down to rotate the rebound device, and the horizontal baffle bar on the upper part of the solid pull rod is embedded in the L-shaped slot of the sleeve, so that the lower movable rod is stretched open, so as to achieve the effect of self-locking of the protective cover and firmly fixing it to the side wall of the reserved hole. When removing the protective cover, the special disassembly rod is inserted to slightly rotate the solid pull rod in the opposite direction to release the spring force. After the connection between the rebound device and the fixing device is loosened, the protective cover can be easily removed.

[0047] Specifically, an upper limit lever 2023 and a lower limit lever 2024 are provided on the pull rod 202 . The upper limit lever 2023 is located above the sealing piece with a hole at the top of the short tube 205 , and the lower limit lever 2024 is located below the sealing piece with a hole at the top of the short tube 205 .

[0048] Specifically, two movable rods 204 are provided, the two movable rods 204 are arranged in a V-shape, and the two movable rods 204 are hinged to the bottom end of the pull rod 202 .

[0049] like Figure 1 , Figure 5 Specifically, the fixing device 3 includes an L-shaped fixing rod 301 and a bolt (302). Two L-shaped fixing rods 301 are provided. The two L-shaped fixing rods 301 are symmetrically arranged on both sides of the bottom of the protective cover plate 1. The horizontal rod of each L-shaped fixing rod 301 is connected to the bottom of the protective cover plate 1, and the bottom of the vertical rod of each L-shaped fixing rod 301 is connected to the slide groove 2041 through the bolt 302. The L-shaped fixing rod can be controlled to slide in the slide groove by loosening and tightening the bolt.

[0050] As a preferred embodiment, the L-shaped fixing rod 301 uses an L-shaped steel sheet with a length of 120mm, a width of 15mm and a thickness of 2mm. The two L-shaped fixing rods are fixed to the bottom piece of the protective cover plate with self-tapping screws along the diagonal direction of the central through hole of the protective cover plate according to the size of the protective hole, ensuring that the protective cover plate can be firmly stuck on the concrete side walls around the reserved hole after being locked. Holes are opened at the bottom of the two L-shaped fixing rods, and screws are used to connect the two 100mm long movable rods with sliding grooves at the end of the bottom of the rebound device to complete the connection between the rebound device and the fixing device.

[0051] like Figure 1-7 When the protective cover of the utility model is installed on site, a special disassembly rod is inserted from the through hole of the protective cover, and the spring is pressed down to rotate the rebound device, so that the horizontal stop rod on the upper part of the solid pull rod is embedded in the L-shaped slot of the sleeve, so that the L-shaped fixing rod slides in the slide slot, and the movable rod hinged at the lower part of the pull rod is stretched open, so as to ensure that the protective cover can be firmly stuck on the concrete side wall around the reserved hole after being locked, so as to achieve the effect of self-locking and firmly fixing the protective cover to the side wall of the reserved hole. When removing the protective cover, a special disassembly rod is inserted to slightly rotate the solid pull rod in the opposite direction to release the spring force. After the rebound device is loosely connected with the fixing device, the protective cover can be easily removed.

Claims

1. A protective device for a wire-laying hole, characterized in that: It comprises a protective cover plate (1), a rebound device (2), and a fixing device (3); The rebound device (2) is arranged at the center of the bottom of the protective cover plate (1); The rebound device (2) comprises a sleeve (201), a pull rod (202), a spring (203), and a movable rod (204); The sleeve (201) is arranged at the center of the bottom of the protective cover plate (1); The pull rod (202) is sleeved in the sleeve (201), and the bottom of the pull rod (202) extends out of the sleeve (201); The spring (203) is sleeved on the pull rod (202) and is located inside the sleeve (201); The movable rod (204) is hinged to the bottom of the pull rod (202); The fixing device (3) is arranged on both sides of the bottom of the protective cover plate (1), and the fixing device (3) is connected to the movable rod (204).

2. A protective device for a wire-laying hole according to claim 1, characterized in that: A through hole (101) is provided at the center of the protective cover plate (1), and sealing plates with holes are provided at the top and bottom of the sleeve (201), and the through hole (101) and the hole of the sealing plate of the sleeve (201) are arranged opposite to each other.

3. A protective device for a wire-laying hole according to claim 1 or 2, characterized in that: A short tube (205) is arranged below the sleeve (201), and sealing plates with holes are arranged at the top and bottom of the short tube (205). The bottom end of the pull rod (202) passes through the hole of the sealing plate at the bottom of the sleeve (201) and the hole of the sealing plate at the bottom of the short tube (205) and is connected to the movable rod (204).

4. A protective device for a wire-laying hole according to claim 1 or 2, characterized in that: The sleeve (201) is provided with an L-shaped slot (206) symmetrically arranged downward from the top.

5. A protective device for a wire-laying hole according to claim 3, characterized in that: A horizontal blocking rod (2021) is arranged at the top of the pull rod (202), and a first U-shaped groove (2022) is arranged at the center of the horizontal blocking rod (2021), and the first U-shaped groove (2022) is located below the hole of the sealing piece at the top of the sleeve (201).

6. A protective device for a wire-laying hole according to claim 3, characterized in that: The pull rod (202) is provided with an upper limit lever (2023) and a lower limit lever (2024); the upper limit lever (2023) is located above the sealing piece with a hole at the top of the short tube (205); and the lower limit lever (2024) is located below the sealing piece with a hole at the top of the short tube (205).

7. A protective device for a wire-laying hole according to claim 5, characterized in that: Two movable rods (204) are provided, and the two movable rods (204) are arranged in a V shape. Both of the two movable rods (204) are hinged to the bottom end of the pull rod (202).

8. A protective device for a wire-laying hole according to claim 6, characterized in that: Each movable rod (204) is provided with a sliding groove (2041), and the fixing device (3) is slidably connected to the sliding groove (2041).

9. A protective device for a wire-laying hole according to claim 8, characterized in that: The fixing device (3) comprises an L-shaped fixing rod (301) and a bolt (302); Two L-shaped fixing rods (301) are provided, and the two L-shaped fixing rods (301) are symmetrically arranged on both sides of the bottom of the protective cover plate (1); The horizontal bar of each L-shaped fixing rod (301) is connected to the bottom of the protective cover plate (1), and the vertical bar bottom of each L-shaped fixing rod (301) is connected to the sliding groove (2041) via the bolt (302).

10. A protective device for a wire-laying hole according to claim 1, characterized in that: It also comprises a disassembly rod (4), one end of which is provided with a handle (401), and the other end of which is provided with a second U-shaped groove (402), wherein the second U-shaped groove (402) matches the first U-shaped groove (2022).

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