Removable lifeline guards and protection systems

Abstract

The present invention relates to a detachable lifeline protection device, comprising two anchor hooks, a telescopic mechanism, a pole pad, a pole, a bidirectional fixing mechanism, and a steel wire rope; the two anchor hooks are connected to the left and right sides of the pole pad through the telescopic mechanism, so that the two anchor hooks are hooked on the left and right sides of the steel box girder wing plate, the pole is fixed on the pole pad, the bidirectional fixing mechanism is fixed on the pole, the steel wire rope passes through the bidirectional fixing mechanism, and the front and rear sides of the bidirectional fixing mechanism are both fixed with the steel wire rope. The present invention also relates to a detachable lifeline protection system. The present invention is convenient to assemble and disassemble, easy to operate, highly safe, and does not damage the parent material, and belongs to the technical field of construction equipment.

Description

Technical Field

[0001] The invention relates to the technical field of construction equipment, in particular to a detachable lifeline protection device, and also to a detachable lifeline protection system composed of the detachable lifeline protection device. Background Art

[0002] With the development of bridge engineering technology, there are more and more super-high and long-span bridges, especially prefabricated steel box girders are the most widely used. Therefore, the safety issues of bridge construction are becoming more and more prominent. Among the many safety issues of bridge construction, the most serious one is high-altitude operation. In addition to the weak safety awareness of managers and operators, there are also insufficient safety protection facilities and unreasonable design of safety protection devices, which have not played the expected protective effect.

[0003] The existing steel box girder lifeline has the following shortcomings: 1. Damage to the parent material. The existing steel box girder lifeline protection device has a vertical pole directly welded on the steel box girder, which causes serious damage to the parent material; 2. The welding between the vertical pole and the steel box girder is not reliable. Under the impact force, the weld is prone to cracking, resulting in protection failure and safety accidents; 3. Ordinary iron pipes are used as vertical poles, which have poor mechanical properties; 4. Holes are directly punched above the vertical poles to pass the wire rope. The hole wall is too rough, which damages the wire rope and poses serious safety hazards; 5. There is only one wire rope, which passes through several spans of vertical poles continuously and is only fixed at both ends. If any end is loose, it will pose a life threat to all operators using the wire rope for protection, and there is a risk of hanging their lives by a thread; 6. If the lighting is insufficient during night operations, the position of the protective device is not obvious, and there are certain safety hazards; 7. Turnover is difficult. Each turnover requires welding and installation, cutting and removal, which not only wastes manpower and material resources, but also affects the construction period and increases the project cost. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a detachable lifeline protection device and protection system with strong versatility and extremely high safety.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] The detachable lifeline protection device includes two anchor hooks, a telescopic mechanism, a pole pad, a pole, a bidirectional fixing mechanism, and a steel wire rope; the two anchor hooks are connected to the left and right sides of the pole pad through the telescopic mechanism, so that the two anchor hooks are hooked on the left and right sides of the steel box girder wing plate, the pole is fixed on the pole pad, the bidirectional fixing mechanism is fixed on the pole, the steel wire rope passes through the bidirectional fixing mechanism, and the steel wire rope is fixed on the front and rear sides of the bidirectional fixing mechanism.

[0007] As a preferred embodiment, the telescopic mechanism includes two closed basket screws, two steel sleeves, and four limit iron rings; the two closed basket screws are arranged between the two anchor hooks, one in front and one behind and parallel to each other; the closed basket screw includes a sleeve section located in the middle and two bolt sections located at both ends, the sleeve section is sleeved outside the bolt section and connected through internal and external threads, and the end of the bolt section is fixedly connected to the anchor hook; the steel sleeve is sleeved outside the sleeve section, and a limit iron ring is installed outside the sleeve section to limit the left and right sliding of the steel sleeve; the vertical pole pad is framed between the two steel sleeves and fixed to the upper ends of the two steel sleeves.

[0008] As a preferred embodiment, a circle of bolt reinforcement wing plates is provided between the end of each bolt section and the anchor hook.

[0009] As a preferred embodiment, in the closed turnbuckle screw, hexagonal ends are provided at both ends of the sleeve section.

[0010] As a preferred embodiment, the anchor hook includes a thickened section, an upper parallel section, a connecting bent section, and a lower parallel section which are arranged in sequence; the thickened section is connected to the telescopic mechanism; the distance between the upper parallel section and the lower parallel section is greater than the thickness of the steel box girder wing plate; an inclined wedge plate is provided on the inner side between the lower parallel section and the connecting bent section, and the steel box girder wing plate is clamped between the inclined wedge plate and the upper parallel section.

[0011] As a preferred embodiment, the lower end of the vertical pole is fixed to the middle part of the vertical pole pad, and a circle of vertical pole reinforcing wing plates is provided between the vertical pole and the vertical pole pad.

[0012] As a preferred embodiment, a two-color reflective strip is pasted on the outside of the vertical pole.

[0013] As a preferred embodiment, the bidirectional fixing mechanism includes a bidirectional anchor and a pluggable clip; the bidirectional anchor is provided with two through holes arranged vertically for two steel wire ropes to pass through; the two ends of the through hole are in the shape of a cone expanding outward, and a pluggable clip is installed at each end; the pluggable clip is conical, with a through hole in the middle for the steel wire rope to pass through, and the bidirectional anchor and the pluggable clip are connected by screws. When the screws are tightened, the pluggable clip is retracted along the conical end of the through hole of the bidirectional anchor, the through hole wall of the bidirectional anchor presses the pluggable clip, and the through hole wall of the pluggable clip presses the steel wire rope.

[0014] The detachable lifeline protection system comprises a plurality of groups of detachable lifeline protection devices; each group of detachable lifeline protection devices is arranged in sequence along the front-rear direction and is installed in sequence on the wing plates of the steel box girder; the steel wire rope passing through each group of detachable lifeline protection devices is arranged in full length without connection in the middle.

[0015] As a preferred embodiment, when two parallel steel ropes are used, the two safety buckles on the operator's safety belt are respectively buckled and hung on the two steel ropes.

[0016] In general, the present invention has the following advantages:

[0017] 1. It has a detachable function and is easy to assemble and disassemble, enabling rapid turnover and repeated use without damaging the parent material.

[0018] 2. It has telescopic adjustment function and adopts inclined wedge plate structure, which is suitable for the width and thickness of steel box girders of different specifications.

[0019] 3. Each bidirectional fixing mechanism can fix a steel wire rope twice, which is highly safe.

[0020] 4. With two independent steel wire ropes for double protection, and the fact that each span is both interconnected and independent of each other, any problem in one span will not affect the safety of other spans. Therefore, the safety factor is extremely high, which can ensure the safety of workers working at heights under the most unfavorable conditions and minimize the occurrence of safety accidents.

[0021] 5. Save project costs to a certain extent and speed up construction progress.

[0022] 6. Adopt reinforced wing plate structure to increase strength and improve safety.

[0023] 7. The telescopic mechanism is adopted. By turning the sleeve section of the closed basket screw, the left and right bolt sections can be synchronously driven to telescope, which is easy to operate.

[0024] 8. Use two-color reflective strips to effectively warn safety devices.

[0025] 9. The bidirectional fixing mechanism with a specific structure is easy to operate and reliable to fix. It can also prevent the wire rope from sliding relative to the bidirectional anchor and prevent the wire rope from being worn. It can also ensure that the wire rope is tightened and the safety factor is improved. The pluggable clip is specially designed for the bidirectional anchor, which avoids the embarrassment of not being able to remove the wire rope after installation.

[0026] 10. The structure of two parallel and independent steel wire ropes combined with two safety buckles improves the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view of the detachable lifeline protection device.

[0028] Figure 2 It is the front view of the detachable lifeline protection device.

[0029] Figure 3 It is a structural diagram of a closed turnbuckle bolt.

[0030] Figure 4 It is a structural diagram of the pole pad and steel sleeve.

[0031] Figure 5a is a schematic diagram of a two-way anchor.

[0032] Figure 5b yes Figure 5a Side view of.

[0033] Figure 5c It is a schematic diagram of the structure of the pluggable clip.

[0034] Figure 6 It is a cross-sectional shot of a steel box girder equipped with a removable lifeline protection device.

[0035] Figure 7 It is a side view of a steel box girder equipped with a detachable lifeline guard.

[0036] Figure 8 It is a partial enlarged view of the connection between the detachable lifeline protection device and the steel box girder.

[0037] Fig. 9 It is a partial enlarged view of the side of the connection between the detachable lifeline protection device and the steel box girder.

[0038] Fig.10 It is a partial enlarged view of the bidirectional fixing mechanism.

[0039] Among them, 1 is the steel box girder, 2 is the anchor hook, 3 is the telescopic mechanism, 4 is the upright pad, 5 is the upright, 6 is the bidirectional fixing mechanism, 7 is the steel wire rope, 8 is the bolt-reinforced wing plate, 9 is the upright reinforced wing plate, 10 is the two-color reflective strip, and 11 is the weld.

[0040] 1-1 is the steel box girder flange, 1-2 is the steel box girder bottom plate, and 1-3 is the steel box girder web plate.

[0041] 2-1 is the thickened section, 2-2 is the upper parallel section, 2-3 is the connecting curved section, 2-4 is the lower parallel section, and 2-5 is the inclined wedge plate.

[0042] 3-1 is a steel sleeve, 3-2 is a limiting iron ring, 3-3 is a sleeve section, 3-4 is a bolt section, and 3-5 is a hexagonal end.

[0043] 6-1 is a two-way anchor, 6-2 is a pluggable clip, 6-3 is a through hole of the two-way anchor, 6-4 is a through hole of the pluggable clip, and 6-5 is a screw. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0045] Embodiment 1

[0046] The detachable lifeline protection device includes two anchor hooks, a telescopic mechanism, a pole pad, a pole, a bidirectional fixing mechanism, and a steel wire rope; the two anchor hooks are connected to the left and right sides of the pole pad through the telescopic mechanism, so that the two anchor hooks are hooked on the left and right sides of the steel box girder wing plate, the pole is fixed on the pole pad, the bidirectional fixing mechanism is fixed on the pole, the steel wire rope passes through the bidirectional fixing mechanism, and the steel wire rope is fixed on the front and rear sides of the bidirectional fixing mechanism.

[0047] The anchor hook includes a thickened section, an upper parallel section, a connecting curved section, and a lower parallel section, which are arranged in sequence; the thickened section is connected to the telescopic mechanism; the distance between the upper parallel section and the lower parallel section is greater than the thickness of the steel box beam wing plate, so as to make it suitable for steel box beam panels of various thicknesses; an inclined wedge plate is arranged on the inner side between the lower parallel section and the connecting curved section, and the steel box beam wing plate is clamped between the inclined wedge plate and the upper parallel section. The anchor hook is made of high-strength alloy steel; the anchor hook is bent from a high-strength alloy steel plate, with a width of 20cm, an upper length of 15cm, and a lower length of 10cm. The end of the lower parallel section is in an arc shape, which can be smoothly inserted into the steel box beam wing plate. The thickened part is a right triangle, which makes the connection between the closed basket bolt and the anchor hook more secure and more reasonable in force. There are two inclined wedge plates; the material of the inclined wedge plate is consistent with that of the anchor hook; the inclined wedge plate is arranged on the inner bottom surface of the anchor hook and is installed by welding before the anchor hook is bent. The inclined wedge plate can lock the steel box girder panels of different thicknesses and prevent them from loosening.

[0048] The telescopic mechanism includes two closed basket screws, two steel sleeves, and four limit iron rings; the two closed basket screws are arranged between the two anchor hooks, one in front of the other and parallel to each other, and are installed on the front and back sides; the closed basket screw includes a sleeve section in the middle and two bolt sections at both ends, the sleeve section is sleeved outside the bolt section and connected through internal and external threads, and the ends of the bolt sections are fixedly connected to the anchor hooks; the steel sleeve is sleeved outside the sleeve section, and a limit iron ring is installed outside the sleeve section to limit the left and right sliding of the steel sleeve; the vertical pole pad is framed between the two steel sleeves and fixed to the upper ends of the two steel sleeves. In the closed basket screw, hexagonal ends are set at both ends of the sleeve section, which function similarly to hexagonal nuts. A circle of bolt reinforcement wing plates is set between the end of each bolt section and the anchor hook.

[0049] The closed turnbuckle is made of high-strength alloy steel. The bolt sections at both ends are inserted into the hexagonal ends of the two closed turnbuckle sleeve sections at the same time by using an adjusting wrench and rotated clockwise or counterclockwise axially, so that the anchor hook is extended and relaxed, and then retracted and tightened after being inserted into the steel box girder wing plate. The ends of the bolt sections at both ends of the closed turnbuckle are connected to the two anchor hook thickening sections by welding. Before welding, the closed turnbuckle should be inserted into the steel sleeve first, and then the limit iron rings should be inserted on both sides.

[0050] There are 8 bolt-reinforced wing plates in the shape of right triangles. The bolt-reinforced wing plates are made of ordinary metal. The bolt-reinforced wing plates are arranged on both sides of the connection between the closed basket screw and the anchor hook, one side of which is connected to the closed basket screw and the other side is connected to the anchor hook, and the connection method is welding. The setting of the bolt-reinforced wing plates further strengthens the connection between the closed basket screw and the anchor hook.

[0051] There are two steel sleeves, which are made of high-strength alloy steel. The length of the steel sleeve is 1 / 2 of the length of the closed basket screw sleeve section, and its inner diameter is consistent with the outer diameter of the closed basket screw sleeve section, which is 36mm. The steel sleeve is set between the two anchor hooks. The function of the steel sleeve is to connect the structure above the pole pad of the retractable lifeline protection device with the lower structure as a whole without affecting the axial rotation of the closed basket screw.

[0052] There are 4 limit iron rings; the limit iron rings are made of ordinary metal, and their inner diameter is consistent with the outer diameter of the sleeve section of the closed basket screw; in order to realize the free rotation of the closed basket screw and the limit iron ring, the outer diameter of the limit iron ring is slightly smaller than the outer diameter of the steel sleeve; here, it should be noted that the limit iron ring is installed on the sleeve section of the closed basket screw, and is not connected to the steel sleeve.

[0053] The number of pole pads is 1; the pole pad is made of high-strength alloy steel; the length of the pole pad is consistent with the width of the anchor hook, the width of the pole pad is slightly smaller than the length of the steel sleeve, and the thickness of the pole pad is 1cm. The pole pad is installed above the steel sleeve, and the installation method is double-sided welding.

[0054] There is one pole; the pole is made of high-strength alloy steel; the outer diameter of the pole is 48mm, the wall thickness is 3.5mm, and the height of the pole meets the requirements for high-hanging safety belts; the pole is set at the center position above the pole pad, and the connection method is welding.

[0055] There are 4 pole reinforcement wing plates, which are made of high-strength alloy steel with a thickness of 5mm. The pole reinforcement wing plates are evenly distributed around the lower part of the pole, and the arrangement is close to the diagonal arrangement of the pole pad. The longitudinal inner side of the pole reinforcement wing plate is connected to the lower side of the pole, and the horizontal bottom side is connected to the surface of the pole pad. The installation method of the pole reinforcement wing plate is double-sided welding. The appearance of the pole reinforcement wing plate is to strengthen the connection between the pole and the pole pad, to ensure that there is no problem in the connection between the pole and the pole pad in case of an accident.

[0056] The bidirectional fixing mechanism includes a bidirectional anchor and a pluggable clip; the bidirectional anchor is provided with two through holes arranged up and down for two steel wire ropes to pass through; the two ends of the through hole are in the shape of a cone that expands outward, and a pluggable clip is installed at each end; the pluggable clip is conical, with a through hole in the middle for the steel wire rope to pass through, and the bidirectional anchor and the pluggable clip are connected by screws. When the screws are tightened, the pluggable clip is retracted along the conical end of the through hole of the bidirectional anchor, the through hole wall of the bidirectional anchor presses the pluggable clip, and the through hole wall of the pluggable clip presses the steel wire rope.

[0057] The number of bidirectional anchors is 1; the bidirectional anchor is made of high-strength alloy steel; the outer diameter of the bidirectional anchor is consistent with the outer diameter of the pole, and the diameter of its through hole is 5mm; the bidirectional anchor has two upper and lower through holes and conical holes are set in both directions; the through hole of the bidirectional anchor is perpendicular to the pole and is perpendicular to the telescopic direction of the closed basket screw; the bidirectional anchor is horizontally symmetrically installed on the top of the pole, and the installation method is welding; the bidirectional anchor combined with the pluggable clip can lock both sides of the wire rope, and it will be pulled tighter and tighter under the action of external force. In addition, the spans are both interconnected and independent of each other. Problems with any span will not affect the safety of other spans.

[0058] The pluggable clip is a double piece, and each through hole of each two-way anchor is set on each side; the pluggable clip is made of the same material as the two-way anchor; there is a small screw hole in the middle of the tail of each pluggable clip, and a screw is installed; when the wire rope needs to be removed, pinch the small screw at the tail of the pluggable clip and pull it out to remove it. The pluggable clip is specially designed for the two-way anchor, which avoids the embarrassment of not being able to remove the wire rope after installation.

[0059] The two-color reflective strips are red and white, alternating between the two colors, and are continuously and obliquely affixed to the vertical poles from top to bottom; the two-color reflective strips are applied after the detachable lifeline protection device is assembled and sprayed with anti-rust paint to prevent the anti-rust paint from contaminating the two-color reflective strips; during construction at night, the two-color reflective strips reflect red and white light under the illumination of lights, which can serve as an effective reminder.

[0060] There are two steel wire ropes, one in each hole; the diameter of the steel wire rope is 5mm; the steel wire rope is set throughout the length and cannot be connected in the middle; the steel wire rope is a qualified product that meets various mechanical performance requirements; when working at height, the operators buckle the two safety buckles on the safety belt to the upper and lower steel wire ropes respectively; the double protection of two independent steel wire ropes, plus the two-way anchoring of the two-way anchor, completely avoids the situation where life is hanging by a thread.

[0061] All metal accessories should be sprayed with anti-rust paint after assembly.

[0062] The detachable lifeline protection device can be installed with two horizontal bars as guardrails. The upper bar is 1.2m high from the structural surface and the lower bar is 0.6m high from the structural surface. A safety net is hung and a footboard with a height of not less than 18cm is installed at the bottom.

[0063] Embodiment 2

[0064] A detachable lifeline protection system comprises a plurality of groups of detachable lifeline protection devices of the first embodiment; each group of detachable lifeline protection devices is arranged in sequence along the front-to-back direction and is installed in sequence on the wing plates of the steel box girder; the steel wire rope passing through each group of detachable lifeline protection devices is arranged in a full-length manner without being connected in the middle.

[0065] When two parallel steel ropes are used, the two safety buckles on the operator's safety belt are respectively buckled and hung on the two steel ropes.

[0066] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. Detachable lifeline protection system, characterized by: Includes multiple sets of detachable lifeline protection devices; The detachable lifeline protection device comprises two anchor hooks, a telescopic mechanism, a pole pad, a pole, a bidirectional fixing mechanism, and a steel wire rope; the two anchor hooks are connected to the left and right sides of the pole pad through the telescopic mechanism, so that the two anchor hooks are hooked on the left and right sides of the steel box girder wing plate, the pole is fixed on the pole pad, the bidirectional fixing mechanism is fixed on the pole, the steel wire rope passes through the bidirectional fixing mechanism, and the steel wire rope is fixed on the front and rear sides of the bidirectional fixing mechanism; The telescopic mechanism includes two closed turnbuckles, two steel sleeves, and four limiting iron rings; the two closed turnbuckles are arranged between two anchor hooks, one in front of the other and parallel to each other; the closed turnbuckle includes a sleeve section located in the middle and two bolt sections located at both ends, the sleeve section is sleeved outside the bolt section and connected through internal and external threads, and the ends of the bolt sections are fixedly connected to the anchor hooks; the steel sleeve is sleeved outside the sleeve section, and a limiting iron ring is installed outside the sleeve section to limit the left and right sliding of the steel sleeve; the vertical pole pad is framed between the two steel sleeves and fixed to the upper ends of the two steel sleeves; the steel sleeve does not affect the axial rotation of the closed turnbuckle; the limiting iron ring is installed on the sleeve section of the closed turnbuckle and is not connected to the steel sleeve; In a closed turnbuckle screw, hexagonal ends are provided at both ends of the sleeve section; The bidirectional fixing mechanism includes a bidirectional anchor and a pluggable clip; the bidirectional anchor is provided with two through holes arranged up and down for two steel wire ropes to pass through; the two ends of the through hole are tapered outwardly, and a pluggable clip is installed at each end; the pluggable clip is tapered, and a through hole for the steel wire rope to pass through is provided in the middle, and the bidirectional anchor and the pluggable clip are connected by screws. When the screws are tightened, the pluggable clip is retracted along the tapered end of the through hole of the bidirectional anchor, and the through hole wall of the bidirectional anchor presses the pluggable clip, and the through hole wall of the pluggable clip presses the steel wire rope; the bidirectional anchor is horizontally and symmetrically installed on the top of the vertical pole; Each group of detachable lifeline protection devices is arranged in sequence along the front-to-back direction and installed in sequence on the steel box girder wing plate; the steel wire rope passing through each group of detachable lifeline protection devices is set in full length without connection in the middle.

2. The detachable lifeline protection system according to claim 1, characterized in that: A circle of bolt reinforcement wing plates is provided between the end of each bolt section and the anchor hook.

3. The detachable lifeline protection system according to claim 1, characterized in that: The anchor hook comprises a thickened section, an upper parallel section, a connecting curved section and a lower parallel section which are arranged in sequence; the thickened section is connected to the telescopic mechanism; the distance between the upper parallel section and the lower parallel section is greater than the thickness of the steel box girder wing plate; an inclined wedge plate is provided on the inner side between the lower parallel section and the connecting curved section, and the steel box girder wing plate is clamped between the inclined wedge plate and the upper parallel section.

4. The detachable lifeline protection system according to claim 1, characterized in that: The lower end of the vertical pole is fixed to the middle part of the vertical pole pad, and a circle of vertical pole reinforcing wing plates is arranged between the vertical pole and the vertical pole pad.

5. The detachable lifeline protection system according to claim 4, characterized in that: Two-color reflective strips are pasted on the outside of the pole.

6. The detachable lifeline protection system according to claim 1, characterized in that: When two parallel steel ropes are used, the two safety buckles on the operator's safety belt are respectively buckled and hung on the two steel ropes.

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