CN210713903U - Retractable level entrance to a cave protection network - Google Patents

Abstract

The utility model relates to a retractable horizontal tunnel portal protective net, which comprises a first bolt, a second bolt, a third bolt, a fourth bolt, a long-distance steel rope, a short-distance steel rope and a horizontal protective net, wherein the first bolt, the second bolt, the third bolt and the fourth bolt are fixedly connected with the outer part of the tunnel portal and are positioned at the upper end of the tunnel body, the insides of the first bolt, the second bolt, the third bolt and the fourth bolt are sequentially connected with the long-distance steel rope in a penetrating way, the inner side of the long-distance steel rope is provided with a horizontal protective net, the tail end and the two sides of the horizontal protective net are connected with the long-distance steel rope in a penetrating way, the front end of the horizontal protective net is connected with the short-distance steel rope in a penetrating way, the two ends of the short-distance steel rope are respectively and fixedly connected with a safety buckle, the two ends of the safety buckle are respectively matched with the insides of the first bolt and the fourth bolt, the front end of the horizontal, the opening and closing of the horizontal protective net are realized, the structure is simple, and the device is practical and convenient.

Description

Retractable level entrance to a cave protection network

Technical Field

The utility model relates to a building engineering protection technical field especially relates to a retractable level entrance to a cave protection network.

Background

The regulations in the technical Specification for high operation safety in building construction in China are as follows: when the side length of the short side of the non-vertical opening is more than or equal to 1500mm, a protective railing with the height not lower than 1.2m is arranged on the operation side of the opening, the opening is sealed by adopting a safety flat net, the opening protection method of which the side length of the short side is more than or equal to 1500mm on a construction site is uneven, most of the adjacent protective railings can be arranged according to the standard requirement, but the horizontal net pockets are incomplete,

at present job site short side length is greater than or equal to 1500 mm's entrance to a cave horizontal protection network fixed mode is mostly for direct ligature on facing limit protection lever, there is no horizontal pocket net, the pocket net is fixed not firm, pocket net stretch-draw is not tight, there is the gap pocket net and entrance to a cave edge, the pocket net damage is changed untimely inconvenient, demolish protection operation during the operation and resume loaded down with trivial details after the protection operation, hoist and mount mouthful no horizontal pocket net or horizontal net and open actual problem such as unable recovery during major structure, consequently, need a scalable horizontal protection network device, can go effectively to solve this kind of problem, construction efficiency is improved, construction safety is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a retractable level entrance to a cave protection network, can solve entrance to a cave level protection network stretch-draw tight effectively, the ligature is not firm, the protection entrance to a cave is opened inconvenience, the protection network is demolishd and is resumeed difficult scheduling problem, has economical and practical, simple convenient advantage.

The technical scheme for realizing the purpose is as follows:

the utility model provides a retractable level entrance to a cave protection network, including a bolt, No. two bolts, No. three bolts, No. four bolts, long-distance steel cable, short-distance steel cable and horizontal protection network, a bolt, No. two bolts, No. three bolts and No. four bolt fixed connection lie in the body upper end of the hole all around in the entrance to a cave outside, a bolt, No. two bolts, the inside of No. three bolts and No. four bolts is worn to close in proper order and is connected with the long-distance steel cable, the inboard of long-distance steel cable is provided with horizontal protection network, the tail end of horizontal protection network and both sides all are worn to close with the long-distance steel cable and are connected, the front end of horizontal protection network is worn to close and is connected with the short-distance steel cable, the equal fixedly connected with safety in both ends safety button of short-distance steel cable, the both ends of.

Preferably, one side of the two ends of the long-distance steel rope, which are positioned on the first bolt and the fourth bolt, is provided with a plurality of first rope clamps, the first rope clamps are fixedly connected with the extending parts at the two ends of the long-distance steel rope, one side of the two ends of the short-distance steel rope, which are positioned on the safety buckle, is provided with a plurality of second rope clamps, and the second rope clamps are fixedly connected with the extending parts at the two ends of the short-distance steel rope. To facilitate better fixation of both ends of the long distance steel cord and the short distance steel cord.

Preferably, a bolt, No. two bolts, No. three bolts and No. four bolts are the symmetry setting, and a bolt, No. two bolts, No. three bolts and No. four bolt upper ends height is a little higher than the body upper end height of opening. In order to avoid the damage caused by the attachment friction of the horizontal protective net and the hole body.

Preferably, the long-distance steel rope is arranged in a U shape, and two ends of the long-distance steel rope are respectively connected with the first bolt and the fourth bolt in a penetrating mode. In order to facilitate the horizontal protective net on one side of the long-distance steel rope and the short-distance steel rope connected with the horizontal protective net to move better.

Preferably, the horizontal protective net is formed by weaving a plurality of nylon ropes in a crossed manner, and the net diameter of the horizontal protective net is 100 mm. In order to facilitate the safety protection of the opening, and the method is economical, practical and convenient to manufacture.

Preferably, the safety buckle is of an arc-shaped structure, one end of the safety buckle is fixed with the short-distance steel rope, and the other end of the safety buckle is engaged with the first bolt or the fourth bolt. To facilitate the fixing and movement of the short distance steel ropes at the front end of the horizontal net.

The utility model has the advantages that: the method comprises the steps that four bolts are fixedly connected to the periphery of the outer part of a hole at the upper end of a hole body, a long-distance steel rope is connected with the four bolts in a penetrating manner and arranged in a U shape, the head end and the tail end of the long-distance steel rope are fixed through rope clamps, the tail end and two sides of a horizontal protective net are connected with the long-distance steel rope arranged in the U shape in a penetrating manner, a short-distance steel rope is connected with the front end of the horizontal protective net in a penetrating manner, safety buckles are fixedly connected to the two ends of the short-distance steel rope, the head end and the tail end of the short-distance steel rope are fixed through rope clamps, the safety buckles at the two ends of the short-distance steel rope are arranged at the front end of the horizontal protective net, and the safety buckles at the two sides of the long-distance steel rope slide back and forth on the two sides of the horizontal protective net to realize the opening and closing of; the problem that the damage and replacement of the protective net are not timely and inconvenient is solved; the problems that the recovery is complicated after the protection operation is dismantled during operation, and the recovery cannot be realized when the protective net at the hoisting opening or the protective net is opened during the main structure are solved; the material cost and the installation cost are low, and the large-batch manufacturing and the installation are easy to put into use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the closed overhead structure of the protection net of the present invention;

FIG. 3 is a schematic view of the connection structure of the No. four bolt in the natural state of the present invention;

FIG. 4 is a schematic view of the connection structure of the fourth bolt in use;

FIG. 5 is a schematic view of the connection structure of the safety buckle in use;

description of reference numerals:

1. a first bolt; 2. a second bolt; 3. a third bolt; 4. a fourth bolt; 5. a long distance steel rope; 6. a short distance steel rope; 7. a horizontal protective net; 8. a first rope clamp; 9. a second rope clip; 10. safety buckle.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 5, the present invention provides a retractable horizontal tunnel portal protective net, which comprises a first bolt 1, a second bolt 2, a third bolt 3, a fourth bolt 4, a long-distance steel rope 5, a short-distance steel rope 6 and a horizontal protective net 7, wherein the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 are fixedly connected to the outside of the tunnel portal and are located at the upper end of the tunnel body, the insides of the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 are sequentially connected with the long-distance steel rope 5 in a penetrating manner, the inner side of the long-distance steel rope 5 is provided with the horizontal protective net 7, the tail end and both sides of the horizontal protective net 7 are connected with the long-distance steel rope 5 in a penetrating manner, the front end of the horizontal protective net 7 is connected with the short-distance steel rope 6 in a penetrating manner, both ends of the short-distance steel rope 6 are fixedly connected with safety buckles 10, both ends of the safety buckles 10 are respectively engaged with, whole device is with the hole body upper end be located the outside fixedly connected with four bolts all around of entrance to a cave as fixed support point, pass a bolt 1 with long-distance steel cable 5 in proper order, a side of horizontal protection network 7, No. two bolts 2, the tail of horizontal protection network 7, No. three bolt 3, another side and No. four bolts 4 of horizontal protection network 7, it is connected to wear to close the preceding of short-distance steel cable 6 and horizontal protection network 7, and at the both ends fixed connection safety buckle 10 of short-distance steel cable 6, through the safety buckle 10 that horizontal protection network 7 front end is located short-distance steel cable 6 both ends, slide around two sides that lie in long-distance steel cable 5 in horizontal protection network 7 both sides, realize opening and shutting of entrance to a cave upper end horizontal protection network 7, this device simple structure, it is convenient to make, economical and practical, it is convenient to use, easily make in batches, the. The device is further explained according to the attached drawings.

Reference is made to fig. 1 to 5.

Further, as shown in fig. 1, 2, 3, 4 and 5, a plurality of first rope clips 8 are respectively arranged at two ends of the long distance steel rope 5 at one side of the first bolt 1 and the fourth bolt 4, the first rope clips 8 are fixedly connected with the extended parts at two ends of the long distance steel rope 5, a plurality of second rope clips 9 are respectively arranged at two ends of the short distance steel rope 6 at one side of the safety buckle 10, the second rope clips 9 are fixedly connected with the extended parts at two ends of the short distance steel rope 6, the long distance steel rope 5 and the short distance steel rope 6 have diameters of 6mm, the long distance steel rope 5 is sequentially connected with the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 in a penetrating manner and is arranged in a U shape and is sequentially connected with the tail edge and two side edges of the horizontal protection net 7 in a penetrating manner, the head end and the tail end of the long distance steel rope 5 respectively penetrate through the insides of the first bolt 1 and the fourth bolt 4 and are bound with the first bolt 1 and the fourth bolt 4, and the extension parts at the head and the tail ends of the long-distance steel rope 5 are fixed through a first rope clamp 8 arranged in parallel at three positions, thereby fixing the head and the tail ends of the long-distance steel ropes 5 to be in a tensioned state, connecting the short-distance steel ropes 6 with the corresponding front edges of the tail edges of the horizontal protective nets 7 in a penetrating manner, and passes through and is bound with safety buckles 10 arranged at two ends of the short distance steel rope 6, and fixes the extending parts at the head and the tail ends of the short distance steel rope 6 through a second rope clip 9 arranged at three positions, the first rope clamp 8 is used for fixing the head and tail ends of the long-distance steel rope 5 with the first bolt 1 and the fourth bolt 4, and the second rope clamp 9 is used for fixing the head and tail ends of the short-distance steel rope 6 with the safety buckle 10.

Further, as shown in fig. 1 and 2, the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 are symmetrically arranged, the upper ends of the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 are slightly higher than the upper end of the hole body, the first bolt 1, the second bolt 2, the third bolt 3 and the fourth bolt 4 are all expansion bolts with rings, the structures are the same, the arranged positions are different, the arrangement of the structures with the rings is convenient for the penetration, winding and fixing of the long-distance steel rope 5 and the hanging and fixing of the safety buckles 10 at the two ends of the short-distance steel rope 6, the first bolt, the second bolt 2, the third bolt 3 and the fourth bolt 4 are fixedly connected to four square corners at the upper end of the concrete hole body at the positions 150mm away from the outer edge of the hole opening and are symmetrically arranged at four points, so that the stress of the device is uniform and the support is stable, and the first bolt 1, the second bolt 2, the third bolt 3 and the fourth, The upper ends of the third bolt 3 and the fourth bolt 4 are slightly higher than the upper end of the hole body, so that the horizontal protective net 7 is prevented from being attached to and rubbed with the surface of the concrete hole body to cause damage.

Further, as shown in fig. 1 and 2, the long distance steel rope 5 is U-shaped, two ends of the long distance steel rope 5 are respectively connected with a first bolt 1 and a fourth bolt 4 in a penetrating manner, the long distance steel rope 5 is U-shaped, one end of the long distance steel rope 5 is in an opening and closing structure and is provided with a short distance steel rope 6 in an attaching manner, the long distance steel rope 5 in the U-shaped and the short distance steel rope 6 in the linear arrangement are combined to form an approximate square structure, the short distance steel rope 6 at the opening of the front end of the U-shaped is pulled forwards and backwards, and the safety buckles 10 at two ends of the short distance steel rope 6 slide forwards and backwards on two sides of the long distance steel rope 5 in the U-shaped manner.

Further, as shown in fig. 2, the horizontal protection net 7 is formed by weaving a plurality of nylon ropes in a crossed manner, the diameter of the horizontal protection net 7 is 100mm, the meshes of the horizontal protection net 7 are of a diamond structure, and the diameter of the net is 100mm, so that the requirements of use specifications are met, and the horizontal protection net 7 is simple in structure, economical and practical and convenient to manufacture.

Further, as shown in fig. 3 and 5, the safety buckle 10 is an arc structure, one end of the safety buckle 10 is fixed to the short distance steel rope 6, the other end of the safety buckle 10 is engaged with the first bolt 1 or the fourth bolt 4, the safety buckle 10 is a spring safety buckle and is an arc structure, one end of the safety buckle is fixed to the short distance steel rope, the other end of the safety buckle is engaged with the first bolt 1 or the fourth bolt 4, in a natural state, the safety buckles 10 at the two ends of the short distance steel rope 6 are hung on the first bolt 1 and the fourth bolt 4, the horizontal protection net 7 is in a square extension state, and in a use state, the safety buckles 10 at the two ends of the short distance steel rope 6 are taken off from the first bolt 1 and the fourth bolt 4 and hung on the two side edges of the U-shaped long distance steel rope 5 so as to slide back and forth for use.

The utility model discloses a theory of operation is: a first bolt 1, a second bolt 2, a third bolt 3 and a fourth bolt 4 are fixedly connected to four corners which are 150mm away from the outer edge of a hole and are positioned at the upper end of the hole body, a long-distance steel rope 5 sequentially passes through one side edge of the first bolt 1 and one side edge of a horizontal protective net 7, the second bolt 2 and the tail edge of the horizontal protective net 7, the third bolt 3 and the other side edge of the horizontal protective net 7 and the fourth bolt 4, the two ends of the long-distance steel rope 5 are tensioned, extension parts at two ends of the long-distance steel rope 5 around the outer part of the first bolt 1 and the outer part of the fourth bolt 4 are fixed through a first rope clamp 8, a short-distance steel rope 6 is connected to the front edge of the horizontal protective net 7 in a penetrating manner, safety buckles 10 are fixed at two ends of the long-distance steel rope 5, two ends of the short-distance steel rope 6 are tensioned, extension parts at two ends of the short-distance steel rope 6 are fixed through a second rope clamp 9, the safety buckles 10 at two ends of the long-distance, when the safety protection net is needed to be used, the safety buckles 10 at the two ends of the long-distance steel rope 5 are taken down from the first bolt 1 and the fourth bolt 4 and hung on the two side edges of the long-distance steel rope 5, the safety buckles 10 at the two ends of the short-distance steel rope 6 are located at the front end of the horizontal protection net 7, and the long-distance steel rope 5 arranged on the two sides of the horizontal protection net 7 slides forwards and backwards to realize the opening and closing of the horizontal protection net 7 at the upper end of the hole.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims (6)

1. The utility model provides a retractable level entrance to a cave protection network, a serial communication port, including a bolt, No. two bolts, No. three bolts, No. four bolts, long-distance steel cable, short-distance steel cable and horizontal protection network, a bolt, No. two bolts, No. three bolts and No. four bolt fixed connection are located the cavity upper end around the entrance to a cave outside, a bolt, No. two bolts, the inside of No. three bolts and No. four bolts is worn to close in proper order and is connected with the long-distance steel cable, the inboard of long-distance steel cable is provided with horizontal protection network, the tail end of horizontal protection network and both sides all are worn to close with the long-distance steel cable and are connected, the front end of horizontal protection network is worn to close and is connected with the short-distance steel cable, the both ends of short-distance steel cable all fixedly connected with the safety button, the both ends of.

2. The retractable horizontal entrance guard of claim 1, wherein the two ends of the long-distance steel cable are provided with a plurality of first rope clamps at one side of the first bolt and the fourth bolt, the first rope clamps are fixedly connected with the extended parts at the two ends of the long-distance steel cable, the two ends of the short-distance steel cable are provided with a plurality of second rope clamps at one side of the safety buckle, and the second rope clamps are fixedly connected with the extended parts at the two ends of the short-distance steel cable.

3. The retractable horizontal entrance to a cave protection network of claim 1, characterized in that, the first bolt, the second bolt, the third bolt and the fourth bolt are symmetrically arranged, and the upper end of the first bolt, the second bolt, the third bolt and the fourth bolt is slightly higher than the upper end of the cave body.

4. The retractable horizontal entrance guard of claim 2, wherein the long distance steel cable is U-shaped, and two ends of the long distance steel cable are respectively connected with the first bolt and the fourth bolt.

5. The retractable horizontal entrance guard of claim 1, wherein the horizontal guard is woven by several nylon ropes, and the diameter of the horizontal guard is 100 mm.

6. The retractable horizontal entrance guard of claim 1, wherein the safety buckle is an arc structure, one end of the safety buckle is fixed to the short distance steel cable, and the other end of the safety buckle is engaged with the first bolt or the fourth bolt.

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