Detachable shear wall near-edge operation safety belt tying and hanging device

Abstract

The invention discloses a simple and practical safety belt tying and hanging device for edge operation of a shear wall. The device is inserted into a split bolt hole in a shear wall outside a residential building, a metal pressing strip at the tail end of the device pops up, the device is installed in place, and a safety belt of an operator near the edge can be tied and hung on a safety belt tying and hanging hole in the other side (the inner side of the shear wall) of the device. And after edge operation is completed, the nut on the device is screwed, the metal pressing strip on the outer side of the device is pressed into the hollow screw rod, and at the moment, the device is pulled out from the inner side of the shear wall. The device is suitable for near-edge operation of a shear wall with split bolt holes, such as near-edge masonry operation of a shear outer wall of a residential building. The device avoids the construction problems of large space required for tying and hanging a safety belt by a steel wire rope, time consumption in mounting and dismounting, potential safety hazards (personnel are easy to touch), influence on building of a separating wall and the like, can be firmly arranged in a split bolt hole of the shear wall, is simple, time-saving and safe in operation in the whole mounting and dismounting process, improves the labor efficiency of operators, and reduces the labor intensity of the operators. And the safety is also ensured.

Description

Technical Field

[0001] This invention patent relates to the field of construction of shear wall structure edge masonry projects, especially the setting of safety measures in the construction of shear wall edge masonry projects for residential buildings. Background Art

[0002] Falls from heights have always been a major hazard in the construction industry. These accidents affect a wide range of construction projects, have serious consequences, and cause significant social and economic impacts, making them a key focus and challenge in the on-site safety management of almost all construction projects. Unsafe work near edges is a primary cause of falls from heights. Therefore, effectively implementing edge protection measures to prevent falls from heights is a crucial aspect of on-site safety management.

[0003] Currently, there are two main safety protection measures for working near edges in engineering projects: one is to install a steel wire rope along the entire length of the interior for attaching safety belts, and the other is to attach safety belts through tie rod holes. Both methods are feasible, but they also have some problems: the steel wire rope method requires a large space (longitudinal), the installation and removal of the steel wire rope is time-consuming, there are safety hazards during use (personnel passing by may be strangled), and the steel wire rope may interfere with the construction of infill walls; the traditional tie rod hole method requires the installation of a hanging rope, which requires the operator's body to extend outside the shear wall, thus increasing the risk of falls from height.

[0004] To address the shortcomings of existing edge safety measures, this invention patent discloses a simple and practical safety belt fastening device for working near shear walls. The device is economical in terms of materials required for its manufacture, convenient and quick to install and dismantle, and safe, ensuring the safety of workers while also improving labor efficiency. Summary of the Invention

[0005] The technical problem this patent aims to solve is to address the shortcomings of the existing construction methods mentioned above, and to provide a simple and practical safety belt fastening device for working near the edge of shear walls. The technical solution adopted by this patent is as follows:

[0006] Step 1: Select a DN10mm threaded rod with a length of approximately 350mm (wall thickness 200mm). A ring is fixed to one end of the threaded rod for attaching the safety belt. The threaded rod is welded to the ring for fixation.

[0007] Step 2: Thread the screw on the fixed end of the ring, with a thread length of approximately 150mm.

[0008] Note: The length of the screw can be adjusted according to the actual thickness of the shear wall. This patent takes a 200mm thick shear wall as an example.

[0009] Step 3: The other end of the screw is hollow, with a hollow length of approximately 50 mm. Two springs are arranged inside the hollow. One end of each of the two springs is fixed to a metal pressing strip, and the shape of the metal pressing strip is "U-shaped". When the springs are in the extended state, the "U-shaped" bend is located outside the hollow screw. At this time, the diameter of the screw plus the length of the "U-shaped" bend is greater than the diameter of the tie bolt hole. When the springs are in the compressed state, the "U-shaped" bend is located inside the hollow screw.

[0010] Step 4: Select a steel casing with a diameter of DN12 mm and a length of approximately 250 mm. One end of the steel casing is welded and fixed to the nut that fits the thread on the screw.

[0011] Step 5: Insert the steel casing into the hollow end of the screw from the side of the nut end. It is necessary to manually press the "U-shaped" metal pressing strip into the hollow screw. At this time, the springs inside the hollow screw are in the compressed state. The nut end of the steel casing is continuously sleeved onto the screw. Due to the restriction of the steel casing, the "U-shaped" metal pressing strip is located inside the hollow screw.

[0012] Step 6: At this time, insert the device (screw + steel casing) into the tie bolt hole on the shear wall in the operation area.

[0013] Step 7: After the nut contacts the thread on the screw, continuously tighten the nut until the other end of the steel casing leaves the area of the "U-shaped" metal pressing strip. At this time, the "U-shaped" metal pressing strip is already on the outer side of the shear wall, without the pressing of the steel casing, and the springs are in the compressed state. The "U-shaped" bend of the "U-shaped" metal pressing strip is again located outside the hollow screw under the action of the springs.

[0014] Step 8: At this time, due to the presence of the "U-shaped" metal pressing strip, the outer side of the device is stuck in the tie bolt hole (screw diameter + "U-shaped" bend length > tie bolt hole diameter), and the operator cannot pull out the device from the inner side of the shear wall, thus achieving a firm operation.

[0015] Step 9: The operator's safety belt is hung on the ring at the inner side device end, and the operation begins.

[0016] Step 10: After the operation is completed, the operator loosens the nut from the inner side of the shear wall, then the screw will move towards the inside of the shear wall, and the "U-shaped" metal pressing strip will gradually contract into the hollow screw due to the presence of the steel casing.

[0017] Step 11: In this state, the operator can easily pull out the device from the inner side of the shear wall, switch the operation site, and repeat this process.

[0018] This patent has the following beneficial effects: 1. The materials required for manufacturing the device are common at the construction site, economical, and convenient for promotion. 2. The operation method is simple. 3. The device can be disassembled and assembled only by tightening and loosening the nut, which is convenient and time-saving. 4. By using this device, the safety of the edge operation personnel is ensured, and at the same time, the labor efficiency is improved. Description of the Drawings

[0019] Figure 1 Side view of the edge operation environment of the safety belt hanging device

[0020] Figure 2 Front view of the edge operation environment of the safety belt hanging device

[0021] Figure 3 Detail drawing of the safety belt hanging device Specific implementation method

[0022] Step 1: Select a screw rod with a diameter of DN10mm and a length of about 350mm (wall thickness 200mm). A ring is fixed at one end of the screw rod for hanging the safety belt, and the screw rod and the ring are fixed by welding.

[0023] Step 2: Thread the screw rod at the fixed end of the ring, and the thread length is about 150mm.

[0024] Note: According to the actual needs of the shear wall thickness, the length of the screw rod can be adjusted. In this patent, a shear wall with a thickness of 200mm is used as an example.

[0025] Step 3: The other end of the screw rod is hollow, and the hollow length is about 50mm. Two springs are arranged in the hollow. One end of each of the two springs is fixed to a metal pressing strip. The shape of the metal pressing strip is "U". When the springs are in the extended state, the "U" bend is outside the hollow screw rod. At this time, the diameter of the screw rod plus the length of the "U" bend is greater than the diameter of the tie rod hole. When the springs are in the compressed state, the "U" bend is inside the hollow screw rod.

[0026] Step 4: Select a steel sleeve with a diameter of DN12mm and a length of about 250mm. One end of the steel sleeve is welded and fixed to the nut that fits the thread on the screw rod.

[0027] Step 5: Insert the steel sleeve into the hollow end of the screw rod from the side of the nut end. It is necessary to manually press the "U" - shaped metal pressing strip into the hollow screw rod. At this time, the springs in the hollow screw rod are in the compressed state. The nut end of the steel sleeve is continuously inserted into the screw rod. Due to the restriction of the steel sleeve, the "U" - shaped metal pressing strip is inside the hollow screw rod.

[0028] Step 6: At this time, insert the device (screw rod + steel sleeve) into the tie rod hole on the shear wall in the operation area.

[0029] Step 7: After the nut contacts the thread on the screw rod, continuously tighten the nut until the other end of the steel sleeve leaves the area of the "U" - shaped metal pressing strip. At this time, the "U" - shaped metal pressing strip is outside the shear wall. Without the restraint of the steel sleeve and with the springs in the compressed state, the "U" bend of the "U" - shaped metal pressing strip is outside the hollow screw rod again under the action of the springs.

[0030] Step 8. At this time, due to the existence of the "zigzag" metal strip, the outer side of the device is stuck in the tie bolt hole (the diameter of the screw rod + the length of the "zigzag" bend > the diameter of the tie bolt hole), and the operator cannot pull out the device from the inner side of the shear wall, thus achieving firm operation.

[0031] Step 9. The operator waits safely and hangs on the ring at the inner side of the device, and starts the operation.

[0032] Step 10: After the operation is completed, the operator loosens the nut from the inner side of the shear wall, then the screw rod will move towards the inside of the shear wall, and the "zigzag" metal strip will gradually shrink into the hollow screw rod due to the existence of the steel sleeve.

[0033] Step 11: In this state, the operator can easily pull out the device from the inner side of the shear wall, switch the operation site, and repeat this process in a cycle.

Claims

1. A simple and practical safety belt fastening device for working near the edge of a shear wall. Its features are as follows: It includes the following steps: Step 1: Select a screw rod with a diameter of DN10mm and a length of about 350mm (wall thickness 200mm). A ring is fixed at one end of the screw rod for hanging the safety belt, and the screw rod and the ring are fixed by welding. Step 2: Thread the screw rod at the fixed end of the ring, and the thread length is about 150mm. The other end of the screw rod is hollow, with a hollow length of about 50mm, and two springs are arranged inside the hollow. One end of the two springs is fixed to the metal pressing strip. Step 3: Select a steel sleeve with a diameter of DN12mm and a length of about 250mm. One end of the steel sleeve is welded and fixed to the nut that fits with the thread on the screw rod. Step 4: Insert the device (screw rod + steel sleeve) into the through tie bolt hole on the shear wall in the operation area, and continuously tighten the nut until the other end of the steel sleeve leaves the area of the "J"-shaped metal pressing strip. Step 5: At this time, due to the existence of the "J"-shaped metal pressing strip, the outside of the device is stuck in the through tie bolt hole (screw rod diameter + "J"-shaped bend length > through tie bolt hole diameter), and the operator cannot pull out the device from the inner side of the shear wall, thus achieving firm operation. Step 6: After the operation is completed, the operator loosens the nut from the inner side of the shear wall, then the screw rod will move towards the inside of the shear wall, and the "J"-shaped metal pressing strip will gradually contract into the hollow screw rod due to the existence of the steel sleeve.

2. The safety belt fastening device for working near the edge of a shear wall according to claim 1, characterized in that... The device can be disassembled and assembled only by tightening and loosening the nut, which is convenient and time-saving.

3. The safety belt fastening device for working near the edge of a shear wall according to claim 1, characterized in that... It occupies a small space and will not affect the operation of other personnel.

4. The safety belt fastening device for working near the edge of a shear wall according to claim 1, characterized in that... The hanging point is safe and firm, which can ensure the safety of the operator and avoid the safety risks caused by the need for the operator's body part to extend outside the shear wall when hanging the safety belt on the traditional through tie bolt hole.

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