A safety protection device for ventilation holes of hollow piers

Abstract

The present invention relates to a safety protection device for a hollow pier ventilation hole, comprising a load-bearing rope, a weight, and a protective cylinder for installation in the hollow pier ventilation hole, wherein the inner cavity or end of the protective cylinder is provided with a protective net, one end of the load-bearing rope is connected to the protective cylinder or the protective net, and the other end of the load-bearing rope is connected to the weight, and the weight falls into the hollow inner cavity of the hollow pier after passing through the hollow pier ventilation hole, and the weight automatically pulls the protective cylinder to the limit position of the hollow pier ventilation hole by gravity, so that the protective cylinder is limited in the hollow pier ventilation hole. The safety protection facility for the hollow pier ventilation hole designed according to the present invention fills the gap in the market, effectively solves the problem of setting safety protection facilities for newly built and existing hollow pier ventilation holes, and has the remarkable characteristics of simple structure, novel design, economical and reasonable, and easy installation and maintenance, strong practicality, and outstanding economic and social benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction supplies, and in particular relates to a safety protection device for a ventilation hole of a hollow pier. Background Art

[0002] In bridge engineering, hollow piers are inevitably used. In order to adjust the temperature difference between the inside and outside of the hollow pier, a certain number of ventilation holes need to be set around the hollow pier. At the same time, in order to prevent birds from building nests and blocking the ventilation holes, safety protection facilities must be installed. At present, for the safety protection facilities of the ventilation holes, most of them directly use the pier body face steel bars as safety protection nets without considering the operability of the construction, resulting in the actual completion of the hollow piers basically without safety protection facilities, and some even have no ventilation holes. In addition, due to the large height of the hollow pier and the irregularity of the ventilation hole setting, once the safety protection facilities are not installed in place at one time during the construction, it is difficult to supplement and implement them later. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a safety protection device for the ventilation holes of hollow piers which has a simple structure, novel design, economic rationality, is easy to install and maintain, and can be added at any time later.

[0004] The technical solution of the present invention is implemented as follows: the present invention discloses a safety protection device for the ventilation hole of a hollow pier, comprising a load-bearing rope, a weight and a protective tube for installation in the ventilation hole of the hollow pier, the inner cavity or the end of the protective tube is provided with a protective net, one end of the load-bearing rope is connected to the protective tube or the protective net, and the other end of the load-bearing rope is connected to the weight, and the protective tube is slidably matched with the ventilation hole of the hollow pier and limited.

[0005] Furthermore, a limiting device is fixed on the protective tube, the protective tube is slidably fitted in the ventilation hole of the hollow pier, and is axially limited with the ventilation hole of the hollow pier by the limiting device.

[0006] Furthermore, the protective tube is a stepped cylindrical body, the hollow pier ventilation hole is a stepped hole, the outer diameter of the small diameter section of the stepped cylindrical body is less than or equal to the aperture of the small diameter section of the stepped hole, the outer diameter of the large diameter section of the stepped cylindrical body is greater than the aperture of the small diameter section of the stepped hole, and the small diameter section of the stepped hole is located on the inner side of the hollow pier ventilation hole.

[0007] Furthermore, the protective tube is a steel component, which is processed from a plate-shaped stainless steel plate and is durable.

[0008] Furthermore, the protective tube is a cylindrical body, and at least one L-shaped limiting rod is fixed to one end of the cylindrical body. When there are multiple L-shaped limiting rods, the multiple L-shaped limiting rods are distributed around the cylindrical body.

[0009] Furthermore, the protective cylinder is a truncated cone cylinder, and the hollow pier ventilation hole is provided with a truncated cone hole section for clamping the truncated cone cylinder.

[0010] Furthermore, protective nets are respectively provided at both ends of the protective tube.

[0011] Furthermore, the load-bearing rope is connected to the central intersection node of the protection net.

[0012] Furthermore, the load-bearing rope and the protective net are fixedly connected by rope clamps, and the load-bearing rope and the concrete ring weight are also fixedly connected by rope clamps.

[0013] Furthermore, the protection net is formed by cross-weaving one or more ropes in a protection tube, and a through hole for the ropes to pass through is arranged on the tube wall of the protection tube; the ropes are steel wire ropes.

[0014] Furthermore, the front end of the rope is fixedly connected with a rope clamp, and the other end passes through the hole inside the protective tube to start weaving. During the weaving process, the rope is tightened as much as possible. After weaving is completed, the rope is tightened with a tensioner, and the end of the rope is fixedly connected to the protective net with a rope clamp to form a protective net.

[0015] Furthermore, the load-bearing rope is coated with warning liquid, and the weight is coated with warning paint; the load-bearing rope is made of steel wire rope.

[0016] Furthermore, the ventilation hole of the hollow pier is arranged on the body of the hollow pier, and the weight falls into the hollow inner cavity of the hollow pier after passing through the ventilation hole of the hollow pier. The weight automatically pulls the protective tube to the limiting position of the ventilation hole of the hollow pier by using gravity, so that the protective tube is limited in the ventilation hole of the hollow pier.

[0017] The embodiments of the present invention have at least the following beneficial effects:

[0018] The present invention aims at the deficiency that there are currently no dedicated safety facilities for hollow pier ventilation holes. According to the structural characteristics of the hollow pier and the ventilation hole, the present invention designs a safety protection facility for the hollow pier ventilation hole with a weight, wherein the inner cavity or the end of the protection tube is provided with a protection net, and the gravity of the weight is utilized to automatically pull the protection tube to the limited position of the hollow pier ventilation hole, so that the protection tube is limited in the hollow pier ventilation hole, thereby solving the problem of setting safety protection facilities for newly built and existing hollow pier ventilation holes.

[0019] The hollow pier ventilation hole safety protection device of the present invention does not affect the casting of newly built hollow bridge piers and ventilation holes. In addition, the present invention is strong and durable, which reduces the number of replacement times of the safety protection device during the service life of the bridge structure to the greatest extent, and greatly reduces the difficulty and cost of maintenance management during operation.

[0020] The present invention can effectively ensure that the later installation is conveniently implemented without affecting the pouring of the bridge pier. In addition, it is not necessary to install or embed any components on the already poured hollow pier, thereby avoiding damage to the pier and adverse effects on the appearance, and is not affected by the wall thickness of the hollow pier.

[0021] The present invention designs a cylindrical protective tube with an L-shaped limiting rod, which can meet the needs of conveniently adding safety protection facilities to existing hollow piers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of Embodiment 1 of the safety protection device for the ventilation hole of a hollow pier of the present invention;

[0024] Figure 2 It is a front view of the use state of the embodiment 1 of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0025] Figure 3 It is a left view of the use state of the embodiment 1 of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0026] Figure 4 It is a schematic diagram of the unfolding of the protective tube of the first embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention (welded type);

[0027] Figure 5 It is a schematic diagram of the deployment of the protection tube of the first embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention (bolted type);

[0028] Figure 6 It is a structural schematic diagram of the second embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0029] Figure 7 It is a front view of the use state of the second embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0030] Figure 8 It is a left view of the use state of the second embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0031] Fig. 9 It is a schematic diagram of the expansion of the protection tube of the second embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0032] Fig.10 It is a structural schematic diagram of the third embodiment of the safety protection device for the ventilation hole of a hollow pier of the present invention;

[0033] Fig.11 It is a front view of the use state of the third embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0034] Fig.12 It is a left view of the use state of the third embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention;

[0035] Fig.13 It is a schematic diagram of the unfolding of the protection tube of the third embodiment of the safety protection device for the ventilation hole of the hollow pier of the present invention.

[0036] In the attached drawings, 1 is a protective tube, 2 is a through hole, 3 is a rope, 4 is a load-bearing rope, 5 is a weight, 6 is a protective net, 7 is a ventilation hole, 8 is a hollow pier body, 9 is an L-shaped limit rod, 10 is the center cross node of the protective net, 11 is a mounting part, and 12 is a rope clamp. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] like Figures 1 to 5 An embodiment of the present invention provides a safety protection device for a hollow pier ventilation hole 7, comprising a load-bearing rope 4, a weight 5, and a protective tube 1 for installation in the hollow pier ventilation hole 7, wherein the inner cavity or the end of the protective tube 1 is provided with a protective net 6, one end of the load-bearing rope 4 is connected to the protective tube 1 or the protective net 6, and the other end of the load-bearing rope 4 is connected to the weight 5, and the protective tube 1 is slidably matched with the hollow pier ventilation hole 7 and limited.

[0040] Further, the weight 5 can be made of local materials, and materials with better durability can be selected, such as a concrete ring structure prefabricated on site, or a hollow slab structure of slope protection, but the size of the hollow slab should meet the requirements of passing through the ventilation holes 7. The weight 5 of the present embodiment can be a concrete ring weight 5.

[0041] Furthermore, a limiting device is fixed on the protective tube 1, and the protective tube 1 is slidably fitted in the ventilation hole 7 of the hollow pier, and is axially limited by the limiting device and the ventilation hole 7 of the hollow pier.

[0042] The protective tube 1 of this embodiment is a cylindrical body, which is made of rectangular stainless steel plate and is durable. At least one L-shaped limit rod 9 is fixed to one end of the cylindrical body. When there are multiple L-shaped limit rods 9, multiple L-shaped limit rods 9 are distributed around the cylindrical body. The L-shaped limit rod 9 is fixedly connected to the inner wall of the cylindrical body. The protective tube 1 of this embodiment is more applicable and is suitable for all hollow pier ventilation holes 7, which can meet the needs of conveniently adding safety protection facilities to existing hollow bridge piers.

[0043] Specifically, the protective tube 1 of this embodiment uses at least three L-shaped limiting rods 9 evenly distributed within the lower semicircular cross-section of the steel casing. The L-shaped limiting rods 9 are fixedly connected to the protective tube 1 by welding or bolting.

[0044] Specifically, a mounting piece 11 with an internal thread hole is fixed to the inner wall of the protective tube 1, and the L-shaped limiting rod 9 is provided with an external thread, and the L-shaped limiting rod 9 is threadedly connected to the mounting piece 11 with an internal thread hole on the protective tube 1. The mounting piece 11 with an internal thread hole can be a nut.

[0045] Specifically, the L-shaped limiting rod 9 is made of L-shaped round steel.

[0046] Furthermore, the inner and outer ends of the protective tube 1 are respectively provided with protective nets 6. Furthermore, the distance between the installed outer protective net 6 of the hollow pier and the outer wall of the hollow pier is about 10 cm, so as to achieve the functional requirements of preventing birds from building nests, and at the same time take into account the purpose of preventing direct rain showers, effectively extending the service life of the entire safety protection facility.

[0047] Furthermore, the load-bearing rope 4 is connected to the central intersection node 10 of the protection net 6. When the protection nets 6 are respectively provided at both ends of the protection cylinder 1, the load-bearing rope 4 is connected to the central intersection node of the inner protection net 6. The load-bearing rope 4 and the protection net 6 are fixedly connected by rope clips 12, and the load-bearing rope 4 and the concrete ring weight 5 are also fixedly connected by rope clips 12.

[0048] Furthermore, the protective net 6 is formed by weaving one or more ropes 3 through holes in the protective tube 1, and a through hole 2 for the rope 3 to pass through is provided on the cylinder wall of the protective tube 1; the rope 3 is made of stainless steel wire rope. The through hole 2 on the cylinder wall of the protective tube 1 is a circular hole, and the aperture of the circular hole is slightly larger than the diameter of the rope 3, so as to facilitate the installation and removal of the holes. The protective net 6 of the present invention is formed by cross-weaving the whole rope 3 in the protective tube 1 as much as possible. First, install the rope clamp 12 at one end of the rope 3, and start weaving from the other end through the through hole 2 inside the protective tube 1. During the weaving process, tighten the rope 3 as much as possible. After the weaving is completed, tighten the whole rope 3 with a tensioner, and take another rope clamp 12 to fix the end of the rope 3 with the protective net 6. The formed protective net 6 meets the multiple functions of ventilation, protection and load-bearing. The shape of the protective net 6 is adjusted according to the actual situation. The ropes 3 of the protective net 6 of this embodiment are arranged in parallel and crosswise.

[0049] When protective nets 6 are respectively provided at both ends of the protective tube 1 , through holes 2 for the rope 3 to pass through are symmetrically provided at the inner and outer ends of the protective tube 1 .

[0050] Furthermore, the load-bearing rope 4 is coated with a warning liquid, and the weight 5 is coated with a warning paint, which can ensure that the positions of the load-bearing rope 4 and the weight 5 can be clearly seen in the dark environment of the hollow pier, which can effectively serve as a safety reminder and ensure the safety of the later maintenance personnel. The load-bearing rope 4 is made of stainless steel wire rope. The length of the load-bearing rope 4 is greater than the wall thickness of the hollow pier, ensuring that the weight 5 is placed in the hollow inner cavity of the hollow pier for a certain length, generally not less than 1m.

[0051] Furthermore, the hollow pier ventilation hole 7 is arranged on the hollow pier body 8, and the weight 5 falls into the hollow inner cavity of the hollow pier after passing through the hollow pier ventilation hole 7. The weight 5 automatically pulls the protective tube 1 to the limiting position of the hollow pier ventilation hole 7 by using gravity, so that the protective tube 1 is limited in the hollow pier ventilation hole 7.

[0052] Embodiment 2

[0053] like Figures 6 to 9 The protective tube 1 of this embodiment is a stepped cylindrical body, and the hollow pier ventilation hole 7 is a stepped hole. The outer diameter of the small diameter section of the stepped cylindrical body is less than or equal to the aperture of the small diameter section of the stepped hole, and the outer diameter of the large diameter section of the stepped cylindrical body is greater than the aperture of the small diameter section of the stepped hole. The small diameter section of the stepped hole is located on the inner side of the hollow pier ventilation hole 7.

[0054] Preferably, the outer diameter of the large diameter section of the stepped cylindrical body is less than or equal to the diameter of the large diameter section of the stepped hole. The large diameter section of the stepped cylindrical body is clearance-matched with the large diameter section of the stepped hole. The small diameter section of the stepped cylindrical body is clearance-matched with the small diameter section of the stepped hole.

[0055] The protective tube 1 of this embodiment is first processed from a rectangular stainless steel plate into a cylindrical body, and then a circular ring base of the same material with a larger outer diameter is welded to form a stepped cylindrical body. The protective tube 1 of this embodiment requires that corresponding stepped ventilation holes 7 be reserved in the form of the protective tube 1 before the hollow pier is cast, which is suitable for newly built hollow piers.

[0056] Other technical features of this embodiment are the same as those of the first embodiment.

[0057] Embodiment 3

[0058] like Figures 10 to 13 The protective tube 1 of this embodiment is a truncated cone cylinder, and the hollow pier ventilation hole 7 is provided with a truncated cone hole section for clamping the truncated cone cylinder.

[0059] The hollow pier ventilation hole 7 of this embodiment is provided with an inner cylindrical hole section, a truncated cone hole section, and an outer cylindrical hole section from the inside to the outside. The aperture of the inner cylindrical hole section is the same as the minimum aperture of the truncated cone hole section. The aperture of the outer cylindrical hole section is the same as the maximum aperture of the truncated cone hole section. Of course, the hollow pier ventilation hole 7 may not be provided with an outer cylindrical hole section, and the shape of the hollow pier ventilation hole 7 is set as required.

[0060] The protective cylinder 1 of this embodiment is processed into a truncated cone cylinder by a fan-shaped stainless steel plate. The protective cylinder 1 of this embodiment requires that ventilation holes 7 with corresponding truncated cone hole sections be reserved in the form of the protective cylinder 1 before the hollow pier is cast, and is suitable for newly built hollow piers.

[0061] Other technical features of this embodiment are the same as those of the first embodiment.

[0062] The working principle of the present invention is that the safety protection device for the hollow pier ventilation hole 7 of the above-mentioned design structure needs to be manufactured and installed as a backup before use.

[0063] During installation, the construction workers first put the load-bearing stainless steel wire rope with the end connected to the concrete ring pendant 5 into the ventilation hole 7 to a certain depth, and then use a straight rod of a certain length to push the concrete ring pendant 5 into the hollow pier through the gap on the protection net 6. The concrete ring pendant 5 automatically pulls the entire safety protection facility into the corresponding position of the ventilation hole 7 by gravity. The construction workers only need to check whether the safety protection facility is installed in place and ensure that the outermost end of the safety protection facility is clamped at the reserved ventilation hole 7 variable cross-section position.

[0064] The present invention has a simple structure and strong practicability. Each component can be disassembled and reused multiple times. It is not limited by the thickness of the pier wall and has good economic efficiency. The present invention is strong and durable, which minimizes the number of times the safety protection device is replaced during the service life of the bridge structure, and greatly reduces the difficulty and cost of maintenance and management during operation. The safety protection facilities for the hollow pier ventilation holes 7 designed according to the present invention fill the gap in the market and effectively solve the problem of setting up safety protection facilities for the new and existing hollow pier ventilation holes 7. It has the remarkable characteristics of simple structure, novel design, economic rationality, and easy installation and maintenance. It has strong practicability and outstanding economic and social benefits. The present invention has broad application prospects in the fields of bridge engineering and civil engineering technology, especially on a large number of existing hollow bridge piers.

[0065] There are many ways to limit the protective tube and the ventilation hole of the hollow pier, which are not limited to the above embodiments. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection device for a hollow pier ventilation hole, characterized in that: It includes a load-bearing rope, a weight, and a protective cylinder installed in the ventilation hole of the hollow pier, wherein the inner cavity or the end of the protective cylinder is provided with a protective net, one end of the load-bearing rope is connected to the protective cylinder or the protective net, and the other end of the load-bearing rope is connected to the weight, and the protective cylinder is slidably matched with the ventilation hole of the hollow pier and limited in position; A limiting device is fixed on the protective tube, the protective tube is slidably matched in the ventilation hole of the hollow pier, and is axially limited with the ventilation hole of the hollow pier through the limiting device; The ventilation hole of the hollow pier is arranged on the body of the hollow pier. After the weight passes through the ventilation hole of the hollow pier, it falls into the hollow inner cavity of the hollow pier. The weight automatically pulls the protective tube to the limit position of the ventilation hole of the hollow pier by gravity, so that the protective tube is limited in the ventilation hole of the hollow pier.

2. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: The protective tube is a stepped cylindrical body, and the hollow pier ventilation hole is a stepped hole. The outer diameter of the small diameter section of the stepped cylindrical body is less than or equal to the aperture of the small diameter section of the stepped hole, the outer diameter of the large diameter section of the stepped cylindrical body is greater than the aperture of the small diameter section of the stepped hole, and the small diameter section of the stepped hole is located on the inner side of the hollow pier ventilation hole.

3. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: The protective cylinder is a cylindrical body, and at least one L-shaped limiting rod is fixed to one end of the cylindrical body. When there are multiple L-shaped limiting rods, the multiple L-shaped limiting rods are distributed around the cylindrical body.

4. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: The protective cylinder is a truncated cone cylinder, and the hollow pier ventilation hole is provided with a truncated cone hole section for clamping the truncated cone cylinder.

5. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: Both ends of the protective tube are respectively provided with protective nets.

6. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: The load-bearing rope is connected to the central intersection node of the protection net.

7. The safety protection device for the ventilation hole of a hollow pier according to claim 1, 5 or 6, characterized in that: The protection net is formed by cross-weaving one or more ropes in a protection tube, and a through hole for the ropes to pass through is arranged on the tube wall of the protection tube; the ropes are steel wire ropes.

8. The safety protection device for the ventilation hole of a hollow pier according to claim 1, characterized in that: The load-bearing rope is coated with warning liquid, and the weight is coated with warning paint; the load-bearing rope is made of steel wire rope.

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