CN221052395U

CN221052395U - Anti-falling device for bridge construction

Info

Publication number: CN221052395U
Application number: CN202322716984.0U
Authority: CN
Inventors: 周芋帆; 沙马木铁; 罗勇; 孙翔; 常亚楠
Original assignee: China Gezhouba Group Power Co ltd
Current assignee: China Gezhouba Group Power Co ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-05-31
Anticipated expiration: 2033-10-10

Abstract

The utility model discloses a falling prevention device for bridge construction, which comprises a fixing component, a longitudinal connecting rod, a transverse connecting rod, a few words, foundation bolts, a steel wire rope and a falling prevention safety net, wherein the foundation bolts and the few words are fixed on a bridge deck of a bridge, the fixing component is connected with the foundation bolts through first nuts, the rear end of the longitudinal connecting rod is arranged on the fixing component, the front ends of the longitudinal connecting rod extend forwards to the front of the end face of the bridge, the front ends of the longitudinal connecting rods on two sides are connected through the transverse connecting rod, the falling prevention safety net is arranged in the front of the end face of the bridge, the edges of the falling prevention safety net are connected with the longitudinal connecting rod and the transverse connecting rod, safety rings are respectively fixedly arranged on the transverse connecting rod close to two ends, and two ends of the steel wire rope are respectively connected with the few words and the safety rings. The utility model has more reliable protection effect and larger protection range when being arranged at the end part of the bridge, and simultaneously, the utility model is more convenient to be arranged and disassembled.

Description

Anti-falling device for bridge construction

Technical Field

The utility model relates to the field of bridge construction protection, in particular to a falling prevention device for bridge construction.

Background

Because there are more high-altitude operations in bridge construction, its risk factor is higher, consequently need set up anti-falling device at terminal surface and side of bridge, the device generally refers to anti-falling safety net, and anti-falling safety net can prevent people, thing from falling or be used for avoiding alleviateing to fall the thing and hit the injury.

However, the existing anti-falling device for bridge construction still has a certain problem that the anti-falling safety net is fixed at the end of the bridge by matching with the supporting rods, but the supporting rods are directly arranged on the bridge deck, so that the supporting force provided by the anti-falling device is small, the coverage area is small, and the protection range is limited. And the construction of bridge tip is forward propulsion, and construction speed is faster, consequently, need frequently remove and install anti-falling safety net and bracing piece, after removing and installation process many times, its anti-falling effect can receive great influence, and the security risk promotes consequently. In addition, the protection effect depends on the fixing condition of the supporting rod, a secondary protection safety device is lacked, and the potential safety hazard is large.

Disclosure of utility model

The utility model aims to provide a falling protection device for bridge construction, which is mounted at the end part of a bridge and has more reliable protection effect and larger protection range, and meanwhile, the falling protection device is more convenient to mount and dismount.

The aim of the utility model is achieved by the following technical scheme:

The utility model provides a bridge construction is with preventing device that falls which characterized in that: including fixed subassembly, the longitudinal connecting rod, the transverse connection pole, several words, rag bolt, wire rope and anti-falling safety net, arrange rag bolt respectively in the both sides of the decking of bridge during the use, several words, fixed subassembly and longitudinal connection pole, rag bolt and several words are fixed on the decking of bridge, fixed subassembly passes through first nut to be connected on rag bolt, the rear end of longitudinal connection pole is installed on fixed subassembly, the front end of longitudinal connection pole stretches out the place ahead to the terminal surface of bridge forward, the front end of the longitudinal connection pole of both sides is connected through the transverse connection pole, anti-falling safety net is established in the place ahead of the terminal surface of bridge, anti-falling safety net's edge connection is on longitudinal connection pole and transverse connection pole, be close to both ends and be fixed respectively and be equipped with the safety ring on the transverse connection pole, wire rope's both ends are connected with several words and safety ring respectively, pull the transverse connection pole of place ahead through wire rope.

Preferably, the fixing assembly comprises at least two right-angle connection fixing plates, the right-angle connection fixing plates are arranged along two side edges of the bridge deck of the bridge, the right-angle connection fixing plates are provided with a first side and a second side which are perpendicular to each other, the first side is fixedly connected to the foundation bolt through a first nut, the second side is vertically downward, a longitudinal second round hole is formed in the second side, the rear end of the longitudinal connecting rod penetrates through the second round hole, the rear end of the longitudinal connecting rod is connected with the second nut, a limit screw is arranged on the longitudinal connecting rod, and the limit screw is close to the side face of the second side.

Preferably, the T-shaped fixing nails are respectively and fixedly arranged on the longitudinal connecting rod and the transverse connecting rod, and the edges of the anti-falling safety net are hung on the T-shaped fixing nails and are bound together through steel wires.

Preferably, the lower parts of the several words and the foundation bolts are embedded into the bridge deck of the bridge.

Preferably, the front end of the longitudinal connecting rod is provided with a transverse third round hole, and the two ends of the transverse connecting rod respectively penetrate through the third round holes of the longitudinal connecting rods on the two sides and are respectively connected with third nuts on the two ends of the transverse connecting rod.

Preferably, both ends of the steel wire rope are respectively provided with a ring eye hook, and the ring eye hooks are connected with the Chinese character 'ji' shaped pieces and the safety ring.

Preferably, the plane of the several words on the same side and the safety ring is parallel to the longitudinal connecting rod.

Preferably, the longitudinal connecting rod and the transverse connecting rod are hollow steel rods.

Preferably, the thickness range of the right-angle connection fixing plate is 20mm or more and 50mm or less, and the length range of the bridge deck plate of which the first side extends into the bridge is 300mm or more and 600mm or less.

Preferably, the diameter of the longitudinal connecting rod is greater than or equal to 60mm, the diameter of the transverse connecting rod is greater than or equal to 35mm, and the difference between the diameter of the longitudinal connecting rod and the diameter of the transverse connecting rod is greater than or equal to 20mm.

Compared with the prior art, the utility model has the following beneficial effects:

1. In the utility model, the reliable installation of the fixing component is realized through the bolts and the nuts, the longitudinal connecting rod is connected to the fixing component, and is connected with the longitudinal connecting rod through the transverse connecting rod to form an integrally stable stressed frame, and the anti-falling safety net is arranged on the frame formed by the transverse connecting rod and the longitudinal connecting rod to form protection. The utility model is provided with the several parts and the safety ring, and is connected through the steel wire rope, so that a second protection is formed, the connection between the anti-falling device and the bridge is enhanced, the anti-falling device can be prevented from falling off due to factors such as unreliability, and the protection effect is more reliable. The installation structure of the bolts and the nuts enables the installation and the disassembly of the utility model to be more convenient.

2. The covering length of the utility model can exceed 20m from the bridge end, and the protection range can be larger.

3. In the utility model, the connection between the parts can be basically connected and fixed by bolts, nuts and screws, and a welding process is not needed, so that the installation and the disassembly are more convenient.

Drawings

FIG. 1 is a schematic top view of the fall arrest device of the present utility model installed at the end of a bridge;

FIG. 2 is a schematic front view of the fall arrest device of the present utility model installed at the end of a bridge;

FIG. 3 is a schematic cross-sectional view at A-A of FIG. 2;

FIG. 4 is a schematic perspective view of a right angle connection fixing plate of the present utility model;

FIG. 5 is a schematic view of the structure of the steel cable of the present utility model when connecting several words to the safety ring;

FIG. 6 is a schematic view of the structure of the longitudinal tie of the present utility model;

fig. 7 is a schematic view of the structure of the transverse bar of the present utility model.

The meaning of the reference numerals in the figures:

1. A bridge deck; 2. the right angle is connected with the fixed plate; 2.1, a first side; 2.2, a second side; 3. an anchor bolt; 4. a first nut; 5. bridge piers; 6. a support; 7. a bridge capping beam; 8. a longitudinal connecting rod; 9. a second nut; 10. a few words; 11. a fall protection safety net; 12. a transverse connecting rod; 13. t-shaped fixing nails; 14. a safety ring; 15. a third nut; 16. a limit screw; 17. a first round hole; 18. a second round hole; 19. eye hooks; 20. a wire rope; 21. a first thread; 22. limiting screw holes; 23. a third round hole; 24. and a second thread.

Detailed Description

The utility model is further described below with reference to examples.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Examples:

As shown in fig. 1 to 7, the anti-falling device for bridge construction of this embodiment includes a fixing component, a longitudinal connecting rod 8, a transverse connecting rod 12, several pieces 10, anchor bolts 3, a steel wire rope 20 and an anti-falling safety net 11, and when in use, the anchor bolts 3, several pieces 10, the fixing component and the longitudinal connecting rod 8 are respectively arranged at two sides of the bridge deck plate 1 of the bridge. Wherein, fixed subassembly includes two right angle connection fixed plates 2, of course can also set up more right angle connection fixed plates 2 according to the demand, and the both sides edge setting of fixed plate 2 along the decking 1 of bridge is connected to the right angle.

When in use, the lower parts of the foundation bolts 3 and the several characters 10 are embedded into the bridge deck plate 1 of the bridge, so as to be fixed on the bridge deck plate 1 of the bridge. The position of the anchor bolt 3 is required to correspond to the installation position of the right-angle connection fixing plate 2, and four anchor bolts 3 are respectively arranged corresponding to each right-angle connection fixing plate 2 in the embodiment. As shown in fig. 5, the figure 10 is bent into a figure shape by a round bar.

As shown in fig. 4, the right-angle connection fixing plate 2 of this embodiment is provided with a first side 2.1 and a second side 2.2 which are perpendicular to each other, the first side 2.1 is provided with four first round holes 17 in the vertical direction, the first side 2.1 is flat against the upper surface of the bridge deck plate 1 of the bridge when being installed, the anchor bolts 3 pass through the first round holes 17, the anchor bolts 3 are connected with first nuts 4, and the first side 2.1 is fixed on the bridge deck plate 1 of the bridge through the first nuts 4. The second edges 2.2 are directed vertically downwards on both sides of the bridge deck 1. A second round hole 18 is longitudinally arranged on the second edge 2.2, and the right angle on the same side is connected with the second round hole 18 of the fixed plate 2 to be aligned front and back. The rear end of the longitudinal connecting rod 8 passes through the second round hole 18, the first thread 21 at the rear end of the longitudinal connecting rod 8 is connected with the second nut 9 on the first thread 21, and the limit is carried out through the second nut 9. A plurality of limit screw holes 22 are formed in the longitudinal connecting rod 8, and limit screws 16 are connected to the limit screw holes 22, wherein the limit screws 16 are close to the side face of the second edge 2.2, so that the position of the longitudinal connecting rod 8 is limited. The distance between the limit screw 16 and the side face of the second side 2.2 is 1-2 mm, so that the limit effect can be better ensured.

The front end of the longitudinal connecting rod 8 extends forward to the front of the end face of the bridge, the front end of the longitudinal connecting rod 8 is provided with a transverse third round hole 23, two ends of the transverse connecting rod 12 respectively penetrate through the third round holes 23 of the longitudinal connecting rods 8 on two sides, two ends of the transverse connecting rod 12 are respectively provided with second threads 24, the second threads 24 on two ends are respectively connected with third nuts 15, two ends of the transverse connecting rod 12 are limited, and accordingly the front ends of the longitudinal connecting rods 8 on two sides are connected through the transverse connecting rod 12.

In the embodiment, a plurality of T-shaped fixing nails 13 are respectively and fixedly arranged on the longitudinal connecting rod 8 and the transverse connecting rod 12, and the edge of the anti-falling safety net 11 is hung on the T-shaped fixing nails 13 and is bound together through iron wires. The installed fall arrest safety net 11 will be located in front of the end face of the bridge.

Safety rings 14 are fixedly arranged on the transverse connecting rod 12 and close to two ends respectively, eye hooks 19 are arranged at two ends of the steel wire rope 20 respectively, two ends of the steel wire rope 20 are connected with the Chinese character 'ji' shaped piece 10 and the safety rings 14 through the eye hooks 19, and the transverse connecting rod 12 in front is pulled through the steel wire rope 20, so that a second protection is formed, the falling prevention device is prevented from falling off due to factors such as unreliability when being connected with a bridge, and the protection effect is more reliable. Wherein the eyelet hooks 19 are conventional components.

The plane of the several characters 10 and the safety ring 14 on the same side of the embodiment is parallel to the longitudinal connecting rod 8, so that a clear force transmission path is formed, and the optimal safety protection effect is ensured.

The longitudinal connecting rod 8 and the transverse connecting rod 12 are preferably hollow steel rods for reducing dead weight, and can be solid steel rods or hollow high-strength steel rods when the overhanging length exceeds 20m and the supporting force is insufficient. The safety ring 14 and the T-shaped fixing nail 13 are both welded and installed.

The thickness range of the right angle connection fixing plate 2 in this embodiment is 20mm or more and 50mm or less, and the length range of the bridge deck plate 1 with the first side 2.1 extending into the bridge is 300mm or more and 600mm or less. The diameter of the longitudinal connecting rod 8 is larger than or equal to 60mm, the diameter of the transverse connecting rod 12 is larger than or equal to 35mm, and the difference between the diameter of the longitudinal connecting rod 8 and the diameter of the transverse connecting rod 12 is larger than or equal to 20mm, so that the longitudinal connecting rod 8 is prevented from being damaged due to stress concentration after being provided with the third round hole 23.

More preferred assembly schemes are: the diameter of the first round hole 17 is preferably 2-4 mm larger than the diameter of the anchor screw 3, so that the right-angle connection fixing plate 2 is smoothly installed on the bridge deck 1, and the fixing effect is not influenced due to overlarge gaps. The diameter of the second round hole 18 is preferably 2-4 mm larger than the diameter of the longitudinal connecting rod 8, so that the longitudinal connecting rod 8 can be smoothly installed on the right-angle connecting and fixing plate 2, and the fixing effect is not influenced due to overlarge gaps.

The falling protection device of this embodiment is used as follows:

During installation, the foundation bolts 3 and the several workpieces 10 are pre-buried on the bridge deck 1 of the bridge, the positions of the foundation bolts 3 correspond to the positions of the first round holes 17 of the right-angle connection fixing plates 2, then the transverse connecting rods 12 penetrate through the third round holes 23 on the two parallel longitudinal connecting rods 8, the second screw threads 24 are tightly twisted and fixed by the matched third nuts 15, the anti-falling safety net 11 is straightened, the edges are wound on the longitudinal connecting rods 8 and the transverse connecting rods 12, the edges of the anti-falling safety net 11 are hung on the T-shaped fixing nails 13, steel wires are adopted for binding and fixing, the edges of the anti-falling safety net 11 and the T-shaped fixing nails 13 are bound together, then the longitudinal connecting rods 8 on two sides penetrate through the right-angle connection fixing plates 2 respectively, then the second nuts 9 matched with the first screw threads 21 are tightly twisted, the limit screws 16 are arranged at the limit screw holes 22 one by one, the two annular eyes 19 are respectively arranged at the two ends of the steel wire rope 20, and then the two annular eyes 19 are respectively connected with the several workpieces 10. After that, the anti-falling device which is connected is moved to the end part of the bridge deck plate 2, a plurality of people slowly extend out of the anti-falling device forwards, then the positions are adjusted to enable the anti-falling safety net 11 to cover the end part of the bridge, after the pre-buried anchor bolts 3 are aligned with the first round holes 17, the first nuts 4 matched with the anchor bolts 3 are adopted to be installed and fixed one by one, and therefore the reliable and stable anti-falling device is formed.

When the fall protection safety net 11 covers a larger range and the longitudinal connecting rod 8 is longer, the installation can be assisted by means of small hoisting mechanical equipment. In addition, the several pieces 10, the safety ring 14, the eye hooks 19 and the steel wire rope 20 form a secondary protection structure, so that the situation that a certain right angle connecting and fixing plate 2 falls off due to factors such as unreliability can be prevented, the several pieces 10 can be synchronously and equidistantly pre-buried in the forward construction process of the end part of a bridge, then the eye hooks 19 are hung forward and the length of the steel wire rope 20 is adjusted, so that the steel wire rope 20 is in a tightening state, the influence on the binding of reinforcing steel bars and the pouring of concrete is avoided, and meanwhile, the secondary protection structure is also ensured to be in a state capable of playing roles at any time continuously.

When dismantling, first nut 4 is dismantled to the symmetry earlier and is retrieved, only have few word pieces 10 at this moment, safety ring 14, the secondary protective structure that eye couple 19 and wire rope 20 formed links to each other with decking 2, whole anti-falling device will be in nature sagging state, accessible hoist engine is retrieved wire rope, the transverse connection pole 12 will be drawn to the bridge floor in the recovery process first, because the focus of whole anti-falling device has been close the bridge floor, accessible manual chain block or small-size hoisting machinery carry out final recovery.

As shown in fig. 2, the conventional bridge is provided with piers, bridge caps, supports and deck boards.

The above-mentioned embodiments of the present utility model are not intended to limit the scope of the present utility model, and the embodiments of the present utility model are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present utility model according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present utility model shall fall within the scope of the present utility model.

Claims

1. The utility model provides a bridge construction is with preventing device that falls which characterized in that: the anti-falling safety net comprises a fixing component, a longitudinal connecting rod (8), a transverse connecting rod (12), a few-shaped piece (10), foundation bolts (3), a steel wire rope (20) and an anti-falling safety net (11), wherein the foundation bolts (3), the few-shaped piece (10), the fixing component and the longitudinal connecting rod (8) are respectively arranged at two sides of a bridge deck (1) of a bridge in use, the foundation bolts (3) and the few-shaped piece (10) are fixed on the upper surface of the bridge deck (1) of the bridge, the fixing component is connected on the foundation bolts (3) through a first nut (4), the rear end of the longitudinal connecting rod (8) is installed on the fixing component, the front ends of the longitudinal connecting rod (8) extend forwards to the front of the end surfaces of the bridge, the front ends of the longitudinal connecting rods (8) at two sides are connected through the transverse connecting rod (12), the anti-falling safety net (11) is arranged in front of the end surfaces of the bridge, the edge of the anti-falling safety net (11) is connected on the longitudinal connecting rod (8) and the transverse connecting rod (12), the two ends (12) are respectively connected with the steel wire rope (14) at two ends (14) of the bridge, -pulling the transverse bar (12) in front by means of the wire rope (20).

2. The fall protection device for bridge construction according to claim 1, wherein: the fixing assembly comprises at least two right-angle connection fixing plates (2), the right-angle connection fixing plates (2) are arranged along two side edges of a bridge deck (1) of a bridge, the right-angle connection fixing plates (2) are provided with a first side (2.1) and a second side (2.2) which are perpendicular to each other, the first side (2.1) is fixedly connected to the foundation bolts (3) through first nuts (4), the second side (2.2) is vertically downward, a longitudinal second round hole (18) is formed in the second side (2.2), the rear end of the longitudinal connecting rod (8) penetrates through the second round hole (18), the rear end of the longitudinal connecting rod (8) is connected with second nuts (9), limit screws (16) are arranged on the longitudinal connecting rod (8), and the limit screws (16) are close to the side faces of the second side (2.2).

3. The fall protection device for bridge construction according to claim 1, wherein: t-shaped fixing nails (13) are respectively and fixedly arranged on the longitudinal connecting rod (8) and the transverse connecting rod (12), and the edges of the anti-falling safety net (11) are hung on the T-shaped fixing nails (13) and are bound together through steel wires.

4. The fall protection device for bridge construction according to claim 1, wherein: the lower parts of the several parts (10) and the foundation bolts (3) are embedded into the bridge deck (1) of the bridge.

5. The fall protection device for bridge construction according to claim 1, wherein: the front end of the longitudinal connecting rod (8) is provided with a transverse third round hole (23), two ends of the transverse connecting rod (12) respectively penetrate through the third round holes (23) of the longitudinal connecting rod (8) on two sides, and two ends of the transverse connecting rod (12) are respectively connected with a third nut (15).

6. The fall protection device for bridge construction according to claim 1, wherein: both ends of the steel wire rope (20) are respectively provided with a ring eye hook (19), and the ring eye hooks (19) are connected with the digital parts (10) and the safety ring (14).

7. The fall protection device for bridge construction according to claim 1, wherein: the plane of the several pieces (10) and the safety ring (14) on the same side is parallel to the longitudinal connecting rod (8).

8. The fall protection device for bridge construction according to claim 1, wherein: the longitudinal connecting rod (8) and the transverse connecting rod (12) are hollow steel rods.

9. The fall protection device for bridge construction according to claim 2, wherein: the thickness range of the right-angle connecting and fixing plate (2) is more than or equal to 20mm and less than or equal to 50mm, and the length range of the bridge deck (1) of the first edge (2.1) stretching into the bridge is more than or equal to 300mm and less than or equal to 600mm.

10. The fall protection device for bridge construction according to claim 1, wherein: the diameter of the longitudinal connecting rod (8) is larger than or equal to 60mm, the diameter of the transverse connecting rod (12) is larger than or equal to 35mm, and the difference value between the diameter of the longitudinal connecting rod (8) and the diameter of the transverse connecting rod (12) is larger than or equal to 20mm.