Steel structure roof construction safety net capable of being folded and unfolded

Abstract

The utility model relates to a retractable safety net for steel structure roof construction. The steel structure roof construction safety net comprises guide steel ropes, net hanging hooks, a rope net, net supporting pieces and net connecting shuttles. The guide steel rope and the net supporting piece are arranged on the front side and the rear side of a roof construction area. Net supporting pieces are fixedly connected with the front and rear inner walls of the steel structure; the guide steel rope is arranged above the net supporting piece; the net hanging hooks are symmetrically and evenly distributed on the left side and the right side of a roof construction area. Netting shuttles are uniformly mounted on the front and rear edges of the rope net; the net connecting shuttle extends out of the transition plate; the net supporting piece comprises a flat plate and a fan-shaped vertical plate; the flat plate is symmetrically connected with fan-shaped flat plates; the outer edge of the fan-shaped flat plate is an arc-shaped edge B; the upper end of the fan-shaped vertical plate is an arc-shaped edge A; the net connecting shuttle slides left and right to form a rope net folding and unfolding effect; the net supporting piece lifts the net connecting shuttle / traction rope, the acting points of the rope net are increased, and the safety of the rope net is improved; after the guide steel rope is arranged, the rope net only needs to be remotely controlled to be folded and unfolded at a safe position, and the construction risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel structure construction, in particular to a steel structure roof construction safety net which can be retracted and expanded. BACKGROUND

[0002] Steel structure roof construction is high-altitude work; steel structure roof construction safety net is a necessary safety measure for preventing high-altitude falling accidents and protecting construction personnel. The conventional arrangement of steel structure roof construction safety net is to set hooks on the side of the steel structure body, hang the edges of the safety net body on the hooks one by one, and expand the safety net body for protection. For work sites where life lines and safety belts cannot be hung and the safety of construction personnel cannot be guaranteed, safety nets are needed. Therefore, the hanging operation of the safety net body itself is performed without safety measures, which is very dangerous. The existing steel structure roof construction safety net cannot guarantee safe construction when the safety net body is hung. SUMMARY

[0003] The utility model aims at solving the above problems and provides a steel structure roof construction safety net which can be retracted and expanded.

[0004] The technical scheme of the utility model is as follows: a steel structure roof construction safety net which can be retracted and expanded is arranged below the roof construction area; the steel structure roof construction safety net which can be retracted and expanded comprises two horizontal guide steel ropes, a plurality of net hooks, a rope net, a plurality of net supporting pieces, and a plurality of net connecting shuttles; the guide steel ropes and the net supporting pieces are arranged on the front and back sides of the roof construction area; the end of the guide steel rope is connected to the left and right side walls of the steel structure; the net supporting pieces are fixed to the front and back inner walls of the steel structure; the guide steel rope is arranged above the net supporting piece; the net hooks are symmetrically and evenly arranged on the left and right sides of the roof construction area and are fixed to the left and right inner walls of the steel structure;

[0005] The left edge of the rope net is hung on the net hanging hook on the left side of the steel structure, and the front and back edges of the rope net are uniformly provided with net connecting shuttles; the net connecting shuttles are sleeved outside the guide steel ropes and can slide left and right along the guide steel ropes to form the effect of the rope net being retracted; the net supporting piece can support the net connecting shuttles / towing ropes to increase the force point in the left and right directions of the rope net retraction direction and improve the safety of the rope net; however, the conventional net supporting piece will affect the retraction of the rope net, that is, the left and right edges of the rope net will be hindered and cannot continue to move forward when encountering the conventional net supporting piece; this makes it impossible to arrange a large-span rope net; in order to solve the problem, the utility model firstly designs the main body structure of the net connecting shuttle, which is the connecting piece of the rope net and the guide steel rope, into a shuttle shape with thick middle and thin two ends; then the net connecting shuttle extends a transition plate on the side surface to cooperate with the net supporting piece; the net supporting piece comprises a flat plate and a fan-shaped vertical plate; one side of the flat plate is connected with the steel structure, and the other side is connected with the lower end of the fan-shaped vertical plate; the left and right ends of the flat plate are symmetrically connected with fan-shaped flat plates; the outer edge of the fan-shaped flat plate is an arc edge B; the upper end of the fan-shaped vertical plate is an arc edge A; firstly, the main body of the net connecting shuttle can smoothly pass through the fan-shaped flat plate to the upper side of the flat plate by virtue of the advantage of thick middle and thin two ends and the guidance of the guide steel rope; and the transition plate is guided by the fan-shaped edge B and the arc edge A in sequence to smoothly reach the highest point of the arc edge A, and the transition plate is in a slightly outwardly tilted state; the front and back edges of the rope net smoothly pass through the net supporting piece; finally, the net connecting shuttle leaves the net supporting plate; the two ends of the arc edge A are flush with the top surface of the flat plate, so that the transition plate can smoothly connect with the arc edge A to prevent the transition plate from being stuck by the fan-shaped vertical plate; and there are various ways to pull the rope net, which can be connected with the pulling mechanism on the right edge of the rope net or directly connected with the rightmost net connecting shuttle.

[0006] Preferably, the arc edge A is provided with a round corner A on both sides to reduce the resistance encountered by the transition plate when sliding on the arc edge A.

[0007] Preferably, the upper end surface of the fan-shaped flat plate is flush with the upper end surface of the flat plate, so that the main body of the net connecting shuttle can smoothly move from the upper side of the fan-shaped flat plate to the upper side of the flat plate.

[0008] Preferably, one end of the arc edge B is connected with the steel structure, and the other end is connected with the outer end surface of the arc-shaped vertical plate, so that the transition plate can smoothly transition from the arc edge B to the arc edge A, reducing the bumping.

[0009] Preferably, the steel structure roof construction safety net capable of being retracted and expanded further comprises a net connecting bolt and a net connecting nut; the net connecting shuttle is provided with a radial slot parallel to the overpass plate; the radial slot is matched with the guide steel rope; the overpass plate has two and is symmetrically arranged at both sides of the slot opening of the radial slot; the guide steel rope can smoothly enter the inner end of the radial slot between the two overpass plates; the outer edge of the overpass plate is provided with a mounting hole; the front edge of the rope net / the rear edge of the rope net is arranged in the radial slot between the mounting hole and the inner end of the radial slot; the guide steel rope is embedded into the inner end of the radial slot due to the pulling of the gravity of the rope net; in this way, the sliding fit and the rotary fit of the guide steel rope and the net connecting shuttle are realized, and the reliable connection of the rope net and the net connecting shuttle is realized; the overpass plate is guided by the fan-shaped edge B and the arc-shaped edge A in sequence and smoothly reaches the highest point of the arc-shaped edge A, and the overpass plate is slightly tilted outward; the front and rear edges of the rope net are pulled to the position close to the mounting hole due to the gravity of the rope net.

[0010] Further, when the overpass plate slides on the arc-shaped edge A, the net connecting shuttle body deflects relative to the guide steel rope; the inner end of the radial slot is coaxially arranged with the axis of the net connecting shuttle, so that the deflection of the net connecting shuttle does not affect the positional relationship between the net connecting shuttle body and the top surface of the flat plate, and the net connecting shuttle stably passes through the net supporting piece.

[0011] Preferably, the middle part of the side surface of the net connecting shuttle body is tangent to the upper end surface of the flat plate, so that the flat plate stably supports the net connecting shuttle body and ensures that the overpass plate stably slides on the arc-shaped edge A.

[0012] Further, the mounting hole has a plurality of mounting holes, so as to stably connect the rope net and the net connecting piece.

[0013] Further, the outer end of the overpass plate is provided with a rounded corner B, so as to prevent the rope net from being cut when the net connecting shuttle slides left and right.

[0014] Preferably, the net hanging hook is an upward L-shaped hook, so as to facilitate the hanging of the rope net.

[0015] Preferably, the steel structure roof construction safety net capable of being retracted and expanded further comprises a lifting ring bolt; the guide steel rope is connected with the left and right side walls of the steel structure through the lifting ring bolt, so as to reduce the connection difficulty of the guide steel rope and the steel structure.

[0016] The steel structure roof construction safety net capable of being retracted and expanded has the following advantages:

[0017] (1) The net connecting shuttle can slide left and right along the guide steel rope to form the effect of retracting and stretching the rope net; the net supporting piece can support the net connecting shuttle / traction rope, increase the force point in the retracting and stretching direction of the rope net, i.e. the left and right direction, and improve the safety of the rope net; under the guidance of the guide steel rope and the arc-shaped edge B and the arc-shaped edge A, the net connecting shuttle can smoothly pass through the net supporting piece; after the guide steel rope is set, the utility model can only need to remotely control the retracting and stretching of the rope net at the safe position of the steel structure, thereby reducing the construction risk during the hanging of the rope net.

[0018] (2) The upper end face of the fan-shaped plate is flush with the upper end face of the plate, so as to facilitate the stable movement of the net connecting shuttle body from above the fan-shaped plate to above the plate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the steel structure roof construction safety net capable of retracting and stretching according to the utility model;

[0020] Figure 2 is an I enlarged view of Figure 1 ;

[0021] Figure 3 is a principle of the steel structure roof construction safety net capable of retracting and stretching according to the utility model Figure 1 ;

[0022] Figure 4 is a principle of the steel structure roof construction safety net capable of retracting and stretching according to the utility model Figure 2 ;

[0023] Figure 5 is a perspective view of the net connecting shuttle;

[0024] Figure 6 is a perspective view of the net supporting piece;

[0025] In the figure: 00. Steel structure, 1. Guide steel rope, 2. Net hanging hook, 3. Rope net, 4. Net supporting piece, 41. Plate, 411. Fan-shaped plate, 412. Arc-shaped edge B, 42. Fan-shaped vertical plate, 421. Arc-shaped edge A, 422. Round corner A, 5. Net connecting shuttle, 51. Transition plate, 511. Mounting hole, 512. Round corner B, 52. Radial groove, 53. Traction rope, 6. Net connecting bolt, 7. Net connecting nut, 8. Lifting eye bolt. DETAILED DESCRIPTION

[0026] Example one: refer to Figures 1-6A kind of steel structure roof construction safety net capable of being retracted, it is arranged below roof construction area;The steel structure roof construction safety net capable of being retracted includes two horizontal guide steel ropes 1, several net hooks 2, rope net 3, several net supporting pieces 4, several net connecting shuttles 5;Guide steel rope 1, net supporting piece 4 are all arranged at the front and back of roof construction area;The end of guide steel rope 1 is connected with the left and right side walls of steel structure 00;Net supporting piece 4 is fixedly connected with the front and back inner walls of steel structure 00;Guide steel rope 1 is arranged above net supporting piece 4;Net hook 2 is symmetrically and uniformly arranged at the left and right sides of roof construction area, and is fixedly connected with the left and right inner walls of steel structure 00;

[0027] The left edge of rope net 3 is hung on the net hook 2 on the left side of steel structure 00;The front and back edges of rope net 3 are uniformly provided with net connecting shuttles 5;Net connecting shuttle 5 is sleeved on guide steel rope 1 and can slide left and right along guide steel rope 1, forming the retracting effect of rope net 3;Net supporting piece 4 can lift net connecting shuttle 5 / pulling rope 53, increase the force point in the retracting direction of rope net 3, i.e., left and right direction, and improve the safety of rope net 3;But the conventional net supporting piece 4 will affect the retraction of rope net 3, i.e., the left and right edges of rope net 3 will be hindered and cannot continue to move forward when encountering ordinary net supporting piece 4;This makes it impossible to arrange large-span rope net 3;To solve this problem, the utility model first designs the main body structure of net connecting shuttle 5, i.e., the connecting piece of rope net 3 and guide steel rope 1, into a shuttle shape with thick middle and thin two ends;Then, net connecting shuttle 5 extends an excess plate 51 on the side surface, which cooperates with net supporting piece 4;Net supporting piece 4 includes flat plate 41 and fan-shaped vertical plate 42;One side of flat plate 41 is connected with steel structure 00, and the other side is connected with the lower end of fan-shaped vertical plate 42;The left and right ends of flat plate 41 are symmetrically connected with fan-shaped flat plate 411;The outer edge of fan-shaped flat plate 411 is arc-shaped edge B 412;The upper end of fan-shaped vertical plate 42 is arc-shaped edge A 421;Firstly, the main body of net connecting shuttle 5 can smoothly pass through fan-shaped flat plate 411 to the upper side of flat plate 41 by virtue of its advantage of thick middle and thin two ends and the guidance of guide steel rope 1;And excess plate 51 is guided by fan-shaped edge B and arc-shaped edge A 421 in turn, and smoothly reaches the highest point of arc-shaped edge A 421, and excess plate 51 is slightly tilted outward;The front and back edges of rope net 3 smoothly pass through net supporting piece 4;Finally, net connecting shuttle 5 leaves net supporting plate;The two ends of arc-shaped edge A 421 are flush with the top surface of flat plate 41, so that excess plate 51 can smoothly connect with arc-shaped edge A 421, so as not to be stuck by fan-shaped vertical plate 42;There are various pulling ways of pulling rope 53 net 3;The right edge of rope net 3 is connected with a pulling mechanism, or the pulling mechanism is directly connected with the rightmost net connecting shuttle 5.

[0028] Compared with the prior art, the networking shuttle 5 can slide left and right along the guide steel rope 1 to form the effect of collecting and stretching the rope net 3; the net supporting piece 4 can support the networking shuttle 5 / pulling rope 53, increase the force point in the left and right direction of the rope net 3 collecting and stretching direction, and improve the safety of the rope net 3; under the guidance of the guide steel rope 1 and the arc-shaped edge B 412 and the arc-shaped edge A 421, the networking shuttle 5 can smoothly pass through the net supporting piece 4; the utility model can collect and stretch the rope net 3 at a remote control position of the steel structure 00 after the guide steel rope 1 is arranged, and the construction risk during the hanging of the rope net 3 is reduced.

[0029] The arc-shaped edge A 421 is provided with a round corner A 422 on both sides, so as to reduce the resistance encountered by the transition plate 51 when sliding on the arc-shaped edge A 421.

[0030] The upper end surface of the fan-shaped flat plate 411 is flush with the upper end surface of the flat plate 41, so that the networking shuttle 5 body can smoothly move from above the fan-shaped flat plate 411 to above the flat plate 41.

[0031] One end of the arc-shaped edge B 412 is connected with the steel structure 00, and the other end is connected with the outer end surface of the arc-shaped vertical plate, so that the transition plate 51 can smoothly transition from the arc-shaped edge B 412 to the arc-shaped edge A 421, and the collision is reduced.

[0032] The steel structure roof construction safety net capable of collecting and stretching further comprises a networking bolt 6 and a networking nut 7; the networking shuttle 5 is provided with a radial groove 52 parallel to the transition plate 51; the radial groove 52 is matched with the guide steel rope 1; the transition plate 51 has two and is symmetrically arranged on both sides of the groove of the radial groove 52; the guide steel rope 1 can smoothly enter the inner end of the radial groove 52 between the two transition plates 51; the outer edge of the transition plate 51 is provided with a mounting hole 511; the front edge of the rope net 3 / the rear edge of the rope net 3 is arranged between the mounting hole 511 and the inner end of the radial groove 52 in the radial groove 52; the networking bolt 6 passes through the mounting hole 511 from one side of the networking shuttle 5 and is screwed with the networking nut 7 on the other side of the networking shuttle 5, so as to lock the guide steel rope 1, the front edge of the rope net 3 / the rear edge of the rope net 3 between the mounting hole 511 and the inner end of the radial groove 52; due to the pulling of the gravity of the rope net 3, the guide steel rope 1 is embedded into the inner end of the radial groove 52; in this way, the sliding cooperation and the rotating cooperation of the guide steel rope 1 and the networking shuttle 5 are realized, and the reliable connection of the rope net 3 and the networking shuttle 5 is realized; the transition plate 51 is guided by the fan-shaped edge B and the arc-shaped edge A 421 in turn, smoothly reaches the highest point of the arc-shaped edge A 421, and the transition plate 51 is in a state of slightly tilting outward; the front and rear edges of the rope net 3 are pulled to the position close to the mounting hole 511 due to the self-weight of the rope net 3.

[0033] When the excess plate 51 slides on the arc-shaped edge A, the main body of the net connecting shuttle 5 deflects relative to the guide steel wire 1; the inner end of the radial slot 52 is coaxial with the axis of the net connecting shuttle 5, so that the deflection of the net connecting shuttle 5 does not affect the positional relationship between the main body of the net connecting shuttle 5 and the top surface of the flat plate 41, and the net connecting shuttle 5 stably passes through the net supporting piece 4.

[0034] The middle side of the main body of the net connecting shuttle 5 is tangent to the upper end surface of the flat plate 41, so that the flat plate 41 stably supports the main body of the net connecting shuttle 5, and the excess plate 51 stably slides on the arc-shaped edge A.

[0035] The mounting hole 511 has a plurality of mounting holes, which can stably connect the rope net 3 and the net connecting piece; in the embodiment, the mounting hole 511 has two mounting holes.

[0036] The two corners of the outer end of the excess plate 51 are chamfered, so as to prevent the rope net 3 from being cut when the net connecting shuttle 5 slides left and right.

[0037] The net hanging hook 2 is an upward L-shaped hook, so as to facilitate the hanging of the rope net 3.

[0038] The working principle of the embodiment is as follows: the net connecting shuttle 5 is sleeved on the guide steel wire 1 and can slide left and right along the guide steel wire 1, thereby forming the stretching effect of the rope net 3; the net supporting piece 4 can lift the net connecting shuttle 5 / pulling rope 53, increase the force point in the left and right directions of the rope net 3, and improve the safety of the rope net 3; however, the conventional net supporting piece 4 affects the stretching of the rope net 3, that is, the left and right edges of the rope net 3 are hindered by the conventional net supporting piece 4 and cannot continue to move forward; this makes it impossible to arrange a large-span rope net 3; in order to solve the problem, the utility model first designs the main body structure of the net connecting shuttle 5, which is a connecting piece of the rope net 3 and the guide steel wire 1, into a shuttle shape with thick middle and thin two ends; the main body of the net connecting shuttle 5 can smoothly pass through the fan-shaped flat plate 411 to the upper side of the flat plate 41 by virtue of the advantages of the large middle and small two sides and the guidance of the guide steel wire 1; the excess plate 51 is guided by the fan-shaped edge B and the arc-shaped edge A in sequence, smoothly reaches the highest point of the arc-shaped edge A, and the excess plate 51 is slightly tilted outward; the front and rear edges of the rope net 3 smoothly pass through the net supporting piece 4; finally, the net connecting shuttle 5 leaves the net supporting plate; the two ends of the arc-shaped edge A are flush with the top surface of the flat plate 41, so that the excess plate 51 can smoothly connect with the arc-shaped edge A, and the excess plate 51 is prevented from being stuck by the fan-shaped vertical plate 42; the pulling method of the pulling rope 53 and the rope net 3 has various modes; the right edge of the rope net 3 is connected to a pulling mechanism, or the pulling mechanism is directly connected to the rightmost net connecting shuttle 5.

[0039] Embodiment two: Embodiment two is basically same with embodiment one, the same place is not repeated, the different place is: the steel structure roof construction safety net that can be collected Zhang still includes the lifting ring bolt 8; the guide steel rope 1 passes through the lifting ring bolt 8 and is connected with the steel structure 00 left and right side wall, can reduce the connection difficulty of guide steel rope 1 and steel structure 00.

[0040] The rightmost networking shuttle 5 is provided with traction ropes 53 on the left and right sides, which are used to drive the contraction of the rope net 3.

Claims

1. A retractable safety net for steel structure roof construction, installed below the roof construction area, characterized in that, It includes two horizontal guide steel ropes, several net hooks, rope nets, several net support components, and several net shuttles; the guide steel ropes and net support components are set on the front and rear sides of the roof construction area; the ends of the guide steel ropes are connected to the left and right side walls of the steel structure; the net support components are fixed to the front and rear inner walls of the steel structure; the guide steel ropes are set above the net support components; the net hooks are symmetrically distributed on the left and right sides of the roof construction area and fixed to the left and right inner walls of the steel structure. The left edge of the rope net is hung on the hook on the left side of the steel structure; the front and rear edges of the rope net are evenly equipped with connecting shuttles; the connecting shuttles are fitted over the guide steel rope; the side of the connecting shuttles extends out to form a transition plate that cooperates with the net support component; the net support component includes a flat plate and a fan-shaped vertical plate; one side of the flat plate is connected to the steel structure, and the other side is connected to the lower end of the fan-shaped vertical plate; the left and right ends of the flat plate are symmetrically connected to fan-shaped flat plates; the outer edge of the fan-shaped flat plate is an arc-shaped edge B; the upper end of the fan-shaped vertical plate is an arc-shaped edge A; the two ends of the arc-shaped edge A are flush with the top surface of the flat plate.

2. The retractable steel structure roof construction safety net according to claim 1, characterized in that: The curved edge armor has rounded corner armor on both sides.

3. The retractable steel structure roof construction safety net according to claim 1, characterized in that: The upper surface of the fan-shaped plate is flush with the upper surface of the plate.

4. The retractable steel structure roof construction safety net according to claim 1, characterized in that: One end of the curved edge is connected to the steel structure, and the other end is connected to the outer end face of the curved vertical plate.

5. The retractable steel structure roof construction safety net according to claim 1, characterized in that: It also includes a connecting bolt and a connecting nut; the connecting shuttle has a radial groove parallel to the transition plate; the radial groove matches the guide steel rope; the guide steel rope is embedded in the inner end of the radial groove; there are two transition plates, symmetrically arranged on both sides of the radial groove opening; the outer edge of the transition plate has a mounting hole; the front edge / rear edge of the rope net is set in the radial groove, between the mounting hole and the inner end of the radial groove; the connecting bolt passes through the mounting hole from one side of the connecting shuttle and is threadedly engaged with the connecting nut on the other side of the connecting shuttle.

6. The retractable steel structure roof construction safety net according to claim 5, characterized in that: The inner end of the radial groove is coaxial with the axis of the connecting shuttle.

7. The retractable steel structure roof construction safety net according to claim 5, characterized in that: There are several mounting holes.

8. The retractable steel structure roof construction safety net according to claim 5, characterized in that: The two outer corners of the transition plate are rounded.

9. The retractable steel structure roof construction safety net according to claim 1, characterized in that: The hook for hanging nets is an L-shaped hook facing upwards.

10. The retractable steel structure roof construction safety net according to claim 1, characterized in that: It also includes eye bolts; the guide steel rope is connected to the left and right side walls of the steel structure through eye bolts.

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