CN107190997A - A kind of steel construction high-rise working safety belt safety rope branch hang device - Google Patents

Abstract

The invention belongs to the technical field of construction safety protection of construction engineering, and discloses a safety belt safety rope support device for steel structure high-altitude operations, including a movable support, a rope end connector, and a horizontal hanging rope; a plurality of movable supports are installed at intervals On the same side flange plate of the structural steel beam, its top is used to support the horizontal hanging cable; the rope end connector is located on the outside of the end movable support, and is also installed on the same side flange plate of the structural steel beam to fix the horizontal hanging cable The end; the horizontal lanyard is used to hang the safety rope of the safety belt, and the safety rope buckle of the safety belt is hung on the horizontal lanyard and can slide along it. The invention neither damages the steel structure, but also can be firmly installed on the steel structure, meets the safety belt safety rope buckle hanging requirements, and prevents workers from falling from high places; at the same time, the safety rope can slide freely on it, realizing protection during mobile construction; The device has the characteristics of safety and reliability, simple structure, convenient assembly and disassembly, reusable use, and low cost.

Description

Safety belt safety rope support device for steel structure working at height

technical field

The invention belongs to the technical field of safety protection for construction engineering, and in particular relates to a safety protection device for steel structure operations at heights.

Background technique

In the construction of high-altitude operations, in order to prevent falling injury accidents, operators are required to wear safety belts (falling suspension safety belts). The safety belt is mainly composed of a safety rope, a buffer, and a tie. When in use, the metal buckle at the upper end of the safety rope is hung on the hanging point device on the fixed structure. In the event of a fall, the safety rope is caught by the hanging point device to prevent further falling, thereby providing safety protection for the operator. In the construction of steel structures, there are a large number of high-altitude operations. However, since the steel structure does not allow welding or drilling bolts to install the hanging point device, it is necessary to tie the safety rope end to the adjacent structural rod. Because it is generally operated by non-lifting professionals, it is difficult to achieve a standard and firm tie. Once a fall occurs, the safety rope is likely to fall off under the impact of gravity, and safety and reliability cannot be guaranteed. And when there are no other rods available in the surrounding area, the safety rope has to be tied to the components under the feet, and the low-hanging method that is the most threatening to the human body is adopted, which further increases the danger; in addition, the fixed hanging point limits the working range. It is very inconvenient to change the position of the hanging point frequently, which greatly affects the work efficiency and construction progress; at the same time, the probability of safety risks is also increased in the process of constantly changing the hanging point.

It can be seen that in the use of the safety belt for falling from heights, the hanging point is the most critical as the supporting part of the whole system. First of all, it must be ensured that it has high strength and is set up firmly to meet the load drop impact load requirements to ensure the safety protection effect. In view of the fact that the steel structure does not allow welding or drilling and bolting to install the hanging point device, how to solve and ensure the above requirements has become a difficult problem, and another solution needs to be found. In addition, the characteristics of high-altitude steel structure operations are that there are many points and each location has a small workload, and the location needs to be changed frequently during construction. Therefore, the developed hanging point device should also meet the in-plane movement protection requirements of high-altitude workers.

Contents of the invention

The present invention aims to solve the technical problem of setting safety rope hanging points on the steel structure and protecting the in-plane movement of construction personnel working at heights, and provides a safety belt safety rope support device for steel structures working at heights, which does not damage the steel structure. structure, and can be firmly installed on the steel structure to meet the safety belt safety rope buckle requirements to prevent workers from falling from heights; at the same time, the safety rope can slide freely on it to achieve protection during mobile construction; the device is safe, reliable, It has the characteristics of simple structure, convenient assembly and disassembly, reusable use, and low cost.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

A safety belt safety rope support device for working at heights in a steel structure, including a movable bracket, a rope end connector, and a horizontal hanging cable; The top end is used to support the horizontal lanyard; the rope end connector is located on the outside of the two movable supports at the end, and is also installed on the same side flange plate of the structural steel beam for fixing the end of the horizontal lanyard part; the horizontal lanyard is used to hang the safety rope of the safety belt, and the safety rope buckle of the safety belt is hung on the horizontal lanyard and can slide along it.

A plurality of movable supports are arranged at intervals of 6-8m.

The movable bracket is composed of a U-shaped holder, a vertical rod, a reinforced angle steel, a rope ear, and a top wire; the U-shaped holder is formed by welding the upper and lower support plates and the side plates, and the lower support plate is drilled with two A bolt hole and a nut are welded, and the bolt hole and the nut are used to install a top screw to fix the U-shaped clamp on the flange plate of the structural steel beam; the vertical rod is welded to the U-shaped frame. The top surface of the upper support plate of the U-shaped card seat; the two reinforced angle steels are installed on the left and right sides of the bottom of the vertical pole, and are welded to the upper support plate of the vertical pole and the U-shaped card seat; The threading ear of the hole is vertically welded on the outside of the top of the pole, and the threading ear of all the movable supports is towards the same side of the U-shaped holder.

The distance between the rope end connector and the movable bracket at the end is not less than 500mm.

The rope end connector is composed of a U-shaped card seat, a tether ear, and a top wire; the U-shaped card seat is formed by welding the upper and lower support plates and the side plates, and the lower support plate is drilled with two bolt holes and Nuts are installed and welded, and the bolt holes and the nuts are used to install top wires to fix the U-shaped holder on the flange plate of the structural steel beam; the tether lugs with rope holes are welded vertically The top surface of the upper support plate of the U-shaped holder.

The horizontal lanyard includes a steel wire rope and a rope clip, and the steel wire rope passes through the rope lugs of all the movable supports in turn, and the two ends of the steel wire rope are fixed on the rope end connectors of the rope end connector through the rope clip. The tethered rope ear; the safety rope of the safety belt is hung on the steel wire rope through a snap ring buckle to form a movable hooking point.

The beneficial effects of the present invention are:

The safety belt safety rope support device for steel structure working at heights of the present invention solves the problems of arranging safety belt safety rope hanging points for steel structures and in-plane movement protection for workers working at heights. Using this device as a safety rope hanging point does not damage the steel structure, and the installation is firm and reliable, which fully meets the requirements of the load falling impact load and ensures the safety of workers working at heights. Because the safety belt safety rope buckled on the horizontal wire rope of the device can move horizontally, the working surface is enlarged without changing the hanging point, the construction efficiency is greatly improved, and the construction progress is accelerated. The device has low production cost, can be used repeatedly, is convenient to install and disassemble, has obvious economic benefits, and saves labor, labor and time.

Description of drawings

Fig. 1 is the overall structure and the schematic diagram of the installation position of the safety belt safety rope support device for steel structure high place operation provided by the present invention;

Fig. 2 is a partial enlarged view of node A in Fig. 1;

Fig. 3 is a partial enlarged view of node B in Fig. 1;

Fig. 4 is a partial enlarged view of node C in Fig. 1;

Fig. 5 is a schematic front view of the movable bracket provided by the present invention;

Fig. 6 is a schematic left view of the movable bracket provided by the present invention.

Above-mentioned figure: 1, movable bracket, 11, the first U-shaped deck, 12, vertical pole, 13, reinforced angle steel, 14, wear the rope ear, 15, the first top wire; 16, the first nut; 2, the rope End connector, 21, second U-shaped card holder, 22, tethered rope ear, 3, horizontal hanging rope, 31, steel wire rope, 32, rope clamp; 4, structural steel beam.

detailed description

In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

As shown in FIG. 1 to FIG. 4 , this embodiment provides a safety belt safety rope support device for working at heights in a steel structure, which mainly includes a movable support 1 , a rope end connector 2 , and a horizontal lanyard 3 . Several movable supports 1 are installed on the same side flange plate of the structural steel beam 4, and are arranged at intervals of 6-8m, and its top is used for the steel wire rope 31 of the support horizontal hanging cable 3. The rope end connector 2 is arranged on the outside of the two movable brackets 1 at the end, and is installed on the flange plate of the same side of the structural steel beam 4 at a distance of not less than 500mm from the end movable bracket 1, and is used to fix the steel wire rope of the horizontal hanging rope 3 31 ends. The horizontal lanyard 3 is installed on the top of the movable support 1, and is used to hang the safety rope of the safety belt.

As shown in FIG. 5 and FIG. 6 , the movable bracket 1 is composed of a first U-shaped holder 11 , a vertical rod 12 , a reinforcing angle steel 13 , a rope ear 14 , and a first top wire 15 .

The first U-shaped card seat 11 is processed by 10mm thick steel plate, and is composed of upper and lower support plates and side plates welded. The plates are connected together to form a clamping structure with a U-shaped cross section. The length of the upper and lower support plates and side plates is about 160mm; the width is determined according to the actual situation of the installation site; the distance between the upper and lower support plates = the maximum thickness of the flange of the structural steel beam 4 at the installation site + 5mm. The lower support plate is drilled with two bolt holes along the longitudinal direction in the center of the horizontal direction. The diameter of the bolt hole = the diameter of the first top wire 15 + 4mm. In addition, the first nut 16 is installed and welded in the bolt hole at the bottom of the lower support plate. The first nut 16 The thread specifications match the first jacking wire 15 and are used for installing the first jacking wire 15 . The first U-shaped holder 11 is located at the bottom of the movable support 1, and the first U-shaped holder 11 can be clamped into the structure steel beam 4 flanges in the gap between its upper and lower support plates and spaced with side plates. It is conveniently and quickly installed on the structural steel beam 4, thereby serving as a stable base support of the movable support 1. The first top screw 15 adopts M12 hexagon head bolts, and the screw rod length is about 50mm; the single movable support 1 is equipped with two. Two first top wires 15 are respectively installed in the two bolt holes of the lower support plate of the first U-shaped clamp 11 and tightened with the first nut 16, so that the first U-shaped clamp 11 mounted on the structural steel beam 4 Securely fixed.

The vertical rod 12 is processed with a 40mm×4mm square steel pipe, and the height is about 500mm, which is determined according to the actual situation of the installation site. The vertical pole 12 is centrally installed and welded on the top surface of the support plate on the first U-shaped holder 11 .

Reinforcement angle steel 13 is equipped with two on the single movable support 1, adopts L40 * 4 angle steel processing; Length is 40mm. Reinforcing angle steel 13 is installed on the left and right sides of the bottom of the vertical pole 12, and its two flange plates are welded with the upper support plate of the vertical pole 12 and the first U-shaped holder 11 respectively for joint reinforcement.

The rope lug 14 is processed by L75×50×10 angle steel, the length is 70mm, and a rope hole with a diameter of 30mm is left in the middle of the 75mm wide flange, and the edge of the rope hole is obtuse. The rope ear 14 is vertically installed on the outside of the top of the vertical rod 12 with its 75mm wide flange, and is welded with the vertical rod 12 with its 50mm wide flange.

The rope end connector 2 is installed on the flange plate of the structural steel beam 4 at a distance of not less than 500mm from the end movable support 1, and is used to fix the wire rope end of the horizontal lanyard 3. As shown in FIG. 4 , the rope end connector 2 is composed of a second U-shaped socket 21 , a tether ear 22 and a second top wire. The concrete structure of the second U-shaped card holder 21 and the manufacturing method are the same as the first U-shaped card holder 11; the concrete structure and the manufacturing method of the tether ear 22 are the same as the rope ear 14; the concrete structure and the manufacturing method of the second top wire are the same as the first A top wire 15. The second U-shaped clamp 21 is located at the bottom of the rope end connector 2, and can be installed on the structural steel beam 4 conveniently and quickly; the two second top wires are respectively installed on the two bolts of the support plate under the second U-shaped clamp 21 hole and tightened with a second nut to securely fix the second U-shaped bracket 21 installed on the structural steel beam 4. Tether ear 22 is vertically installed and welded in the top middle of the second U-shaped deck 21 upper support plate with its 75mm wide flange, welds with its 50mm wide flange and the second U-shaped deck 21 last support plate.

The horizontal lanyard 3 is horizontally installed on the top of the movable support 1, and is used to hang the safety rope of the safety belt. The horizontal lanyard 3 includes a steel wire rope 31 and a rope clamp 32. The diameter of the steel wire rope 31 is not less than 12mm. The rope clamp 32 is used to fix the rope end of the steel wire rope 31. The specification matches the steel wire rope 31. The number of rope clamps 32 at the connection end of the steel wire rope 31 is not less than 3. The spacing is not less than 75mm.

When using the steel structure safety belt safety rope support device for working at heights in this embodiment, the first U-shaped holder 11 of the movable support 1 and the second U-shaped holder 21 of the rope end connector 1 are placed on the structure. on the flange of the steel beam 4, and fasten the first top wire 15 and the second top wire to fix it respectively; pass the steel wire rope 31 through the rope hole on the rope ear 14 of each movable support 1 in turn, and pass the two ends through the rope The clip 32 is fixed on the tether ear 22 of the cord end connector 2 . The safety belt safety rope is hung on the steel wire rope 31 through the snap ring buckle to form movable hooking points, and the operator can move horizontally while preventing vertical fall.

The specific construction process of the steel structure safety belt safety rope support device for working at heights of the present embodiment is as follows:

1) Preparation

(1) Technical preparation

Carry out design, check calculation, and determine material specifications.

(2) Material preparation

The specifications of the steel plate and section steel should meet the design requirements, there must be quality certification documents and factory inspection reports, and the mechanical performance indicators must meet the relevant standards. The thickness of the steel plate, the specification and size of the section steel and the allowable deviation shall meet the requirements of the product standard.

The specifications and models of the steel wire rope 31 should meet the design requirements, without dead bends, corrosion, loose strands, broken wires, and hemp core oil drying. There must be quality certification documents and factory inspection reports, and its mechanical performance indicators must meet relevant standards.

The specification and quantity of the rope clamp 32 should meet the requirements of the design and specifications, and the clamp seat must not have any defects that reduce the strength or significantly damage the appearance (such as air holes, cracks, looseness, sand inclusions, cast scars, phosphorus, wrong boxes, etc.).

2) Parts and parts processing and procurement

(1) Processing of the movable support 1: processing and assembling according to the design size and requirements. The positions of the bolt holes on the lower support plate of the first U-shaped deck 11 should be correct. The first nut 16 is purchased, and the specification matches the first top screw 15, and should be aligned with the center of the hole during installation. Wear the blunt angle at the edges of the 14 rope holes of the rope ear. Rope-through lugs 14 are first assembled and welded on the pole 12, then the pole 12 is assembled with the first U-shaped holder 11, and the bottom of the pole 12 is reinforced with angle steel 13 at last. When installing each upright bar 13, pay attention to the same side of the side plate of the first U-shaped holder 11 with the threading ear 14 facing. The upright bar 12 should be perpendicular to the upper support plate of the first U-shaped holder 11. The welding seam is full welding, and the welding is required to be firm.

(2) Processing of the rope end connector 2: processing and assembling according to the design size and requirements. The processing requirements of the second U-shaped holder 21 and the tether ear 22 are the same as the first U-shaped holder 11 and the rope ear 14 of the movable support 1. The tether ear 22 is vertically assembled and welded on the upper support plate surface of the second U-shaped holder 21 . The welding seam is full welding, and the welding is required to be firm.

(3) The first top screw 15 and the second top screw: both use M12 hexagon head bolts with a length of about 50mm, which are purchased and inspected according to the standard of "Hexagon Head Bolts".

(4) Wire rope 31 blanking: wire rope 31 blanking length=the length of steel wire rope 31 connected between the two side rope end connectors+the winding length of steel wire rope 31 at the connection end×2. The winding length of the steel wire rope 31 at the connection end should meet the requirements for installing the rope clamp 32 (the number of rope clamps 32 at the connection end of the steel wire rope 31 is not less than 3, and the spacing is not less than 75mm).

(5) Rope clip 32: for purchasing. The specifications match the steel wire rope 31, and the number of each connection end is not less than 3. The clamp seat of the rope clamp 32 must not have any defects that reduce the strength and significantly damage the appearance (such as air holes, cracks, looseness, sand inclusions, casting scars, phosphorus, wrong boxes, etc.), and the surface of the U-shaped bolts is not allowed to have burnt cracks, Dents, scars, streaks, oxide scales and embossing. The surface of the thread must not have bruises, burrs, double cusps, scratches and incomplete threads.

3) Device installation

(1) Installation of the movable support 1: the movable support 1 is installed on the same side of the structural steel beam 4, and one is set every 6-8m at both ends and in the middle. When installing, the pole 12 is facing upwards, insert the opening of the first U-shaped clamp 11 into the flange of the structural steel beam 4, until the side plate is close to the side of the flange of the structural steel beam 4, and screw the first U-shaped clamp with a hand wrench The first top wire 15 on the support plate under the seat makes it tighten the bottom surface of the structural steel beam 4 flanges.

(2) Installation of the rope end connector 2: set it at a place not less than 500mm away from the movable bracket 1 at the end. When the side plate is close to the side of the 4 flanges of the structural steel beam, screw the top wire on the support plate under the second U-shaped holder 21 with a hand mover to tighten the bottom surface of the 4 flanges of the structural steel beam.

(3) Installation of the horizontal hanging rope 3: from one end to the other end, the steel wire rope 31 is passed through the rope holes on the rope ear 14 of each movable support 1 in turn, and one end of the steel wire rope 31 is first connected and fixed on the side rope end connector 2 ; Use the chain to tighten the wire rope 31, and then connect and fix the other end of the wire rope 31 with the other side rope end connector 2. The method of connecting the wire rope 31 to the rope end connector 2 is as follows: the wire rope 31 is passed through the rope hole on the tether lug 22 of the rope end connector 2, and the rope end and the wire rope 31 are clamped with a rope clamp 32 . Rope clip 32 is not less than 3, and spacing is not less than 75mm.

(4) In order to ensure the safety of the installation process, the installation of the device should be carried out before the steel structure beam 4 is hoisted, and it will be hoisted together with the steel structure beam 4 after the installation is completed.

4) Device use

The safety rope of safety belt is hung on the wire rope 31 of horizontal lanyard 3 by clasp buckle, and safety rope can slide along wire rope 31, and construction personnel is carried out mobile protection.

In summary, it can be known that the safety belt safety rope support device for steel structure high-altitude operations of the present invention has the following advantages:

1) Use the movable bracket 1 and the rope end connector 2 to directly install it on the structural steel beam 4 without welding or drilling bolts in the steel structure to avoid damage to the structure.

2) A horizontal lanyard 3 is set between the movable brackets 1 to provide movable hooking points for the safety rope of the safety belt; the safety rope can slide freely along the lanyard steel wire rope 31 to achieve dual functions of preventing vertical fall and horizontally moving construction.

3) The rope end connector 32 can change the stress direction of the movable support 1 from horizontal to downward, thereby greatly increasing the stability of the movable support 1 .

4) A reinforcing angle steel 13 is provided at the root of the vertical rod 12 of the movable support 1, which can greatly improve the ability of the vertical rod 12 to resist deformation.

5) Simple structure, convenient material acquisition, convenient processing and use, and turnover.

Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art Under the enlightenment of the present invention, without departing from the gist of the invention and the scope of protection of the claims, personnel can also make specific changes in many forms, and these all belong to the protection scope of the present invention.

Claims (6)

1. A safety belt safety rope support and suspension device for high-altitude steel work, is characterized in that it comprises a movable support, a rope end connector, and a horizontal sling; a plurality of movable supports are arranged at intervals and are installed on the same side of the structural steel beam. On the side flange, the top end is used to support the horizontal hanging rope; the rope end connector is located on the outside of the two movable supports at the end, and is also installed on the same side flange of the structural steel beam for fixing The end of the horizontal hanging rope; the horizontal hanging rope is used to hang the safety rope of the safety belt, and the safety rope buckle of the safety belt is hung on the horizontal hanging rope and can slide along it. 2. A safety belt safety rope support device for steel structure working at heights according to claim 1, characterized in that, a plurality of said movable supports are arranged at intervals of 6-8m. 3. A safety belt safety rope support device for steel structure work at heights according to claim 1, wherein the movable support is composed of a U-shaped bracket, a vertical rod, a reinforced angle steel, a rope lug, and a top wire Composition; the U-shaped card base is composed of upper and lower support plates and side plates welded, and the lower support plate is drilled with two bolt holes and welded with nuts, and the bolt holes and the nuts are used to install the top wire To fix the U-shaped card seat on the flange plate of the structural steel beam; the vertical rod is welded to the top surface of the upper support plate of the U-shaped card seat; the two reinforced angle steels are installed on the vertical rod The left and right sides of the bottom are welded to the upper support plate of the vertical rod and the U-shaped holder; the rope-piercing ears provided with rope holes are welded vertically on the outer side of the top of the vertical rod, and all the movable brackets Said threading ear is facing the same side of said U-shaped card seat. 4 . The safety belt safety rope support device for steel structure working at heights according to claim 1 , wherein the rope end connector is not less than 500 mm from the movable bracket at the end. 5. A safety belt safety rope support device for a steel structure working at heights according to claim 1, wherein the rope end connector is composed of a U-shaped holder, a rope lug, and a top wire; The U-shaped holder is formed by welding the upper and lower support plates and the side plates. The lower support plate is drilled with two bolt holes and is welded with nuts. The U-shaped card seat is fixedly installed on the flange plate of the structural steel beam; the said tether lug provided with the rope hole is vertically welded on the top surface of the upper support plate of the said U-shaped card seat. 6. A safety belt safety rope support device for a steel structure working at heights according to claim 1, wherein the horizontal hanging rope includes a steel wire rope and a rope clip, and the steel wire rope passes through all the movable supports in sequence The two ends of the steel wire rope are fixed to the tether ears of the rope end connector through the rope clamp; the safety rope of the safety belt is hung on the steel wire rope through a snap ring buckle to form a movable hook point.