CN215518404U

CN215518404U - Anti-falling device for bridge construction

Info

Publication number: CN215518404U
Application number: CN202121451885.9U
Authority: CN
Inventors: 吴华伟; 吴先锋; 刘巍; 蒲琳; 江君超
Original assignee: YUNNAN AEROSPACE ENGINEERING GEOPHYSICAL SURVEY INSPECTION CO LTD
Current assignee: YUNNAN AEROSPACE ENGINEERING GEOPHYSICAL SURVEY INSPECTION CO LTD
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-14
Anticipated expiration: 2031-06-29

Abstract

An anti-falling device for bridge construction comprises a stand column and an anti-throwing net; the bottom of each upright post is fixedly connected with the bridge, each upright post is provided with a sliding groove along the radial direction, each sliding groove is internally provided with a sliding block, each sliding block can slide up and down along the corresponding sliding groove, and the adjacent upright posts are detachably connected with the two ends of the anti-throwing net through the corresponding sliding blocks. The anti-falling device for bridge construction provided by the utility model can adapt to the self height and the installation height of different anti-throwing nets, and the anti-throwing nets are firmly fixed and convenient to detach.

Description

Anti-falling device for bridge construction

Technical Field

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

Background

The bridge refers to a building constructed for a road to cross natural or artificial barriers, and is erected on rivers, lakes and seas, so that vehicles, pedestrians and the like can smoothly pass through the bridge. The bridge generally consists of an upper structure, a lower structure and an auxiliary structure, wherein the upper structure mainly refers to a bridge span structure and a support system; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like. The bridge is divided according to a structural system and comprises four basic systems, namely a beam bridge, an arch bridge, a rigid bridge and a suspension cable bearing (a suspension bridge and a cable-stayed bridge).

The anti-falling device mainly protects two sides of a bridge so as to ensure the safety of vehicles and pedestrians, not only plays a role of safety protection, but also can maintain the environment around the bridge, and the existing anti-falling device mainly adopts a bridge anti-throwing net. The bridge anti-throwing net, also known as a bridge protection net and a bridge guardrail net, is formed by processing high-quality low-carbon steel wires through a series of processes such as drawing, weaving, welding, plastic dipping and the like, and is widely used for guardrail protection of municipal viaducts, expressway overpasses, railway overpasses, harbors and docks, livestock raising, cultivation and the like.

Most of anti-throwing nets in the prior art are fixed through bolts, and the installation height is usually fixed, so that the actual requirements of different construction conditions on the anti-throwing nets with different heights cannot be met, and when the anti-throwing nets are damaged and need to be maintained, the protective nets are inconvenient to maintain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the anti-falling device for bridge construction, which can adapt to the self height and the installation height of different anti-throwing nets, is firm in fixation of the anti-throwing net and convenient to detach.

An anti-falling device for bridge construction comprises a stand column and an anti-throwing net; the bottom of each upright post is fixedly connected with the bridge, each upright post is provided with a sliding groove along the radial direction, each sliding groove is internally provided with a sliding block, each sliding block can slide up and down along the corresponding sliding groove, and the adjacent upright posts are detachably connected with the two ends of the anti-throwing net through the corresponding sliding blocks and can be used for installing the anti-throwing nets with different heights.

Furthermore, a connecting piece is arranged on the sliding block, the connecting piece is fixedly connected with the sliding block and is positioned on the outer side of the upright post, and the sliding block is detachably connected with the anti-throwing net through the connecting piece.

Furthermore, still include first joint spare, set up first through-hole on the connecting piece, first joint spare passes first through-hole with prevent throwing the rotatory joint of net.

Furthermore, one side of the sliding block, which is opposite to the connecting sheet, is provided with a connecting hole, one side of the upright post, which is opposite to the sliding groove, is provided with a plurality of limiting holes along the radial direction, limiting bolts penetrate through the limiting holes, and the limiting bolts are in threaded connection with the connecting holes, so that the anti-throwing net can be installed at different heights.

Furthermore, the anti-collision device further comprises a reinforcing column, wherein the reinforcing column is positioned between two adjacent stand columns, the upper part of the reinforcing column is detachably connected with the anti-collision net, and the lower part of the reinforcing column is fixedly connected with the bridge, so that the anti-collision net is more firmly installed, and the anti-collision performance is enhanced.

The upper part of the reinforcing column is provided with a second through hole, and the second clamping piece penetrates through the second through hole to be rotationally clamped with the anti-throwing net.

Furthermore, the lower end of the reinforcing column is of an inverted U-shaped structure, fixing holes corresponding to one another are formed in two sides of the inverted U-shaped structure, the inverted U-shaped structure is inserted into the concrete guardrail, fixing bolts penetrating through the concrete guardrail penetrate through the fixing holes, and the fixing bolts are used for fixing the inverted U-shaped structure on the concrete guardrail.

Further, first joint spare all includes joint nut and joint bolt with second joint spare, "8" font through-hole is seted up to joint nut cavity and one end, it sets up the dog to correspond "8" font through-hole on the joint bolt, the dog is worn to establish "8" font through-hole and with the rotatory joint of joint nut is convenient for prevent throwing the dismantlement of net.

Furthermore, connecting sheets are arranged on two opposite sides of the sliding block, the connecting sheets are fixedly connected with the sliding block and are positioned on two sides of the stand column, second connecting holes are formed in the side faces, adjacent to the connecting sheets, of the sliding block, and a plurality of second limiting holes are formed in the side faces, adjacent to the connecting sheets, of the stand column along the radial direction.

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

compared with the prior art, the anti-dropping device for bridge construction provided by the utility model has the advantages that the upright posts are provided with the sliding grooves and the sliding blocks, the anti-dropping device can adapt to anti-dropping nets with different heights, and the practicability is higher.

According to the anti-falling device for bridge construction, the limiting bolt can fix the sliding block at different heights, so that the anti-throwing net can be fixed at different heights, and the construction requirements of different bridges on the installation height of the anti-throwing net can be met.

According to the anti-falling device for bridge construction, the reinforcing column is arranged, the fixing bolt penetrates through the concrete guardrail, and the reinforcing column is fixed on the concrete guardrail, so that the anti-falling net is more firmly installed, the stability of the device is improved, and the anti-collision performance and the safety performance of the device are enhanced.

The anti-falling device for bridge construction provided by the utility model has the advantages that the upright posts and the reinforcing posts are connected with the anti-throwing net in a rotary clamping manner, so that the anti-throwing net is convenient to mount and dismount, and the maintenance and replacement of the anti-throwing net in the later use period are convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic overall structure diagram of a drop preventing device for bridge construction according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a center pillar according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a slider according to a first embodiment of the utility model.

Fig. 4 is a sectional view taken along line a-a in fig. 1.

Fig. 5 is an exploded view of the first clip member and the second clip member in the embodiment of the present invention.

Fig. 6 is a schematic structural view of a pillar in the second embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a slider in the second embodiment of the present invention.

In the figure: the concrete guardrail comprises 1-concrete guardrail, 2-upright post, 3-anti-throwing net, 4-sliding chute, 5-sliding block, 6-connecting piece, 7-first clamping piece, 8-first through hole, 9-connecting hole, 10-limiting hole, 11-limiting bolt, 12-reinforcing post, 13-second clamping piece, 14-second through hole, 15-fixing hole, 16-fixing bolt, 17-clamping nut, 18-clamping bolt, 19-second limiting hole and 20-second connecting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, the anti-falling device for bridge construction provided by the embodiment is installed on a concrete guardrail 1 of a bridge, and comprises a column 2 and an anti-throwing net 3. Wherein the fixed welding in bottom of stand 2 has connecting portion, and fixes stand 2 on concrete guardrail 1 through the bolt, and two adjacent stands 2 can be dismantled with prevent throwing net 3 and be connected.

In the present embodiment, as shown in fig. 2, a chute 4 is formed in the column 2 in the radial direction, and the chute 4 has an i-shaped horizontal cross section and penetrates the column 2. One side surface of the upright post 2 is provided with a strip-shaped opening communicated with the sliding groove 4 along the radial direction. A plurality of evenly distributed limiting holes 10 are radially arranged on one side surface of the upright post 2 opposite to the strip-shaped opening, and the limiting holes 10 are communicated with the sliding groove 4.

In this embodiment, at least one sliding block 5 matched with the sliding groove 4 is slidably connected in the sliding groove 4, as shown in fig. 2 and 3, the horizontal section of the sliding block 5 is i-shaped, and a connecting sheet 6 is welded along the vertical direction on one side of the elongated opening, and the connecting sheet 6 penetrates through the elongated opening and is located on the outer side of the upright post 2, and is provided with a first through hole 8. The connecting piece 6 is also provided with a first clamping piece 7, and the first clamping piece 7 penetrates through the first through hole 8 to clamp the connecting piece 6 and the anti-throwing net 3. The middle part of one side surface of the sliding block 5 opposite to the connecting sheet 6 is provided with a cylindrical connecting hole 9, and the inner wall of the sliding block is provided with internal threads. The upright post 2 of the device is also provided with a limiting bolt 11, and the limiting bolt 11 is provided with an external thread corresponding to the internal thread of the connecting hole 9 and penetrates through the limiting hole 10 to be in threaded connection with the sliding block 5. Preferably, two connecting sheets 6 which are parallel to each other are welded on one side, located at the elongated opening, of the sliding block 5 along the vertical direction, and the anti-throwing net 3 is clamped between the two connecting sheets 6, so that the anti-throwing net 3 is connected with the sliding block 5 more firmly.

In this embodiment, in the chute 4, two sliding blocks 5 are preferably connected in a sliding manner, and the two sliding blocks 5 are connected with the upper end and the lower end of the vertical edge of one side of the anti-throwing net 3 through a connecting sheet 6 and a first clamping piece 7. The anti-throwing net device is provided with the sliding grooves 4 and the sliding blocks 5, so that the anti-throwing nets with different heights can be installed, the anti-throwing nets can be driven to move up and down along the stand columns 2, and after the anti-throwing net device is moved to a proper position, the anti-throwing net 3 is fixed at a proper height through the limiting bolts 11, so that the requirements of different bridges on the height of the anti-throwing net 3 and the installation height are met. In practical application, after the protection network passes through the slider to be fixed, the edge passes the mesh ligature in the stand of preventing throwing the net through iron wire or rope about the protection network, avoids the space article that drop between protection network and the stand to bring the hidden danger.

In the present embodiment, as shown in fig. 1, the anti-falling device further includes a reinforcing column 12, and the reinforcing column 12 is disposed between two adjacent columns 2. Specifically, the reinforcing column 12 is formed by welding steel plates, and is divided into an upper part and a lower part along the vertical direction. As shown in fig. 4, the upper portion is composed of two parallel and vertically arranged elongated steel plates and a second clamping member 13. The two steel plates clamp the anti-throwing net 3 in the middle, and a plurality of pairs of symmetrical second through holes 14 which are uniformly distributed are formed in the vertical direction. The second clamping piece 13 penetrates through the second through hole 14 and the anti-throwing net 3, and the strip-shaped steel plate and the anti-throwing net 3 are clamped. The lower part of the concrete guardrail is an inverted U-shaped structure formed by welding steel plates, and at least one pair of symmetrical fixing holes 15 are formed in two sides of the inverted U-shaped structure and inserted into the concrete guardrail 1. The fixing holes 15 are penetrated with fixing bolts 16 penetrating through the concrete guardrail 1, and the fixing bolts 16 are used for fixing the inverted U-shaped structure of the reinforcing column 12 on the concrete guardrail 1. In practical applications, the number of the reinforcing columns 12 can be set according to the practical length of the anti-throwing net 3 and the requirement on the stability of the device.

In the anti-falling device for bridge construction provided by the embodiment, the reinforcing column 12 is arranged, the fixing bolt 16 penetrates through the concrete guardrail 1, the reinforcing column 12 is arranged on the concrete guardrail 1, the stability of the device in later use after installation is greatly improved, and the anti-collision and safety performance of the device are enhanced.

In this embodiment, first joint spare 7 and second joint spare 13 all include joint nut 17 and joint bolt 18, as shown in fig. 5, wherein "8" font through-hole is seted up to joint nut 17 cavity and a terminal surface, corresponds "8" font through-hole on the joint bolt 18 and sets up the dog, and the dog passes "8" font through-hole and gets into inside the joint nut 17 and with the rotatory joint of joint nut 17, is convenient for prevent throwing the dismantlement of net 3. In order to prevent the clamping bolt 18 from rotating after the clamping bolt 18 is clamped in the clamping nut 17 to cause the clamping bolt 18 to be separated from the clamping nut 17, two through holes are formed in the side wall of the clamping nut 17, and a connecting line of the two through holes penetrates through the axis of the clamping nut 17; correspondingly, the dog one side at joint bolt 18 has seted up corresponding perforation, and, when joint bolt 18 inserted joint nut 17 inside and when rotatory 90 degrees, two perforation of joint nut 17 are the same with the fenestrate trompil direction of joint bolt 18, at this moment, utilize the iron wire to pass above-mentioned perforation and tie a knot and tighten, can fix the relative position of joint bolt 18, prevent that joint bolt 18 joint from taking place to rotate behind joint nut 17, prevent that joint bolt 18 breaks away from joint nut 17.

The working principle of the anti-falling device for bridge construction in the embodiment is as follows:

during installation, the upright columns 2 are installed firstly, the two upright columns 2 correspond to the length of the anti-throwing net 3, the long-strip-shaped openings are oppositely installed at the proper positions of the concrete guardrail 1, then the reinforcing columns 12 are installed, the inverted U-shaped structures of the reinforcing columns 12 are inserted into the concrete guardrail 1 between the two upright columns 2, and the fixing bolts 16 are installed well.

The anti-throwing net 3 is vertically inserted between two strip-shaped steel plates on the upper portion of the reinforcing column 12 from top to bottom and is placed on the concrete guardrail 1 between the two upright columns 2, after the sliding block 5 slides to a proper position, the clamping bolt 18 of the first clamping piece 7 penetrates through the first through hole 8 and the anti-throwing net 3 and is inserted into the clamping nut 17 and rotates for 90 degrees, after all the first clamping pieces 7 are installed, the anti-throwing net 3 is lifted upwards to a proper height, at the moment, the limiting bolt 11 is inserted into the limiting hole 10 at the height of the sliding block 5 and is screwed, and therefore the anti-throwing net is reliably connected with the sliding block 5. And then the second clamping piece 13 is installed to finish the installation of the device.

Along with the increase of this anti-falling device live time, when preventing throwing net 3 and need maintaining, wash or change, only need one hand to hold joint nut 17, another hand is rotatory 90 degrees with joint bolt 18, then moves joint nut 17 and joint bolt 18 to opposite direction, can break away from joint nut 17 and joint bolt 18, and then takes first joint spare 7 and second joint spare 13 from this device down, upwards draws at this moment and prevents throwing net 3, can prevent throwing net 3 and follow this device and take off.

The second embodiment is as follows:

the fixed welding in bottom of stand 2 has connecting portion, fixes stand 2 on concrete guardrail 1 through the bolt, and two adjacent stands 2 can be dismantled with preventing throwing net 3 and be connected.

In the present embodiment, as shown in fig. 6, a chute 4 is opened in the column 2 in the radial direction, and the chute 4 has an i-shaped horizontal cross section and penetrates the column 2. The two side surfaces of the upright post 2 are both provided with strip-shaped openings which are communicated with the sliding grooves 4 along the radial direction. A plurality of second limiting holes 19 which are uniformly distributed are arranged on the adjacent side surfaces of the long-strip-shaped opening of the upright post 2 along the radial direction.

In this embodiment, as shown in fig. 7, the horizontal section of the slider 5 is "i" shaped, and the connecting pieces 6 are welded on the two side surfaces of the elongated opening along the vertical direction, and the side surface of the slider 5 adjacent to the connecting piece 6 is provided with a threaded hole corresponding to the second limiting hole 19 for fixing the second connecting hole 20 of the slider.

The stand 2 in this embodiment, the left and right sides all can prevent throwing the net 3 through the slider 5 is fixed, through setting up a plurality of stands 2, can fix the multiunit in succession and prevent throwing the net 3, realizes longer construction section to preventing throwing the demand of net 3. The height of the anti-throwing net 3 on the left side and the right side of the upright post 2 can be fixed according to actual construction conditions by utilizing the up-and-down adjustment of the slide block 5 and the limiting bolt 11 on the upright post 2, so that the rapid disassembly and assembly and the free height adjustment of the anti-throwing net 3 are realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a prevent device that falls for bridge construction which characterized in that: comprises a column (2) and an anti-throwing net (3);

the bottom of the upright post (2) is fixedly connected with a bridge, the upright post (2) is provided with a sliding groove (4) along the radial direction, a sliding block (5) is arranged in the sliding groove (4), and the upright post (2) is adjacent to the sliding block (5) and the two ends of the anti-throwing net (3) are detachably connected.

2. A fall arrest device according to claim 1, characterised in that: the anti-throwing net is characterized in that the sliding block (5) is provided with a connecting piece (6), the connecting piece (6) is fixedly connected with the sliding block (5) and is positioned on one side of the upright post (2), and the sliding block (5) is detachably connected with the anti-throwing net (3) through the connecting piece (6).

3. A fall arrest device according to claim 2, characterised in that: the anti-throwing net is characterized by further comprising a first clamping piece (7), a first through hole (8) is formed in the connecting piece (6), and the first clamping piece (7) penetrates through the first through hole (8) and is connected with the anti-throwing net (3) in a clamping mode.

4. A fall arrest device according to claim 3, characterised in that: one side, far away from the connecting sheet (6), of the sliding block (5) is provided with a connecting hole (9), one side, opposite to the sliding groove (4), of the stand column (2) is provided with a plurality of limiting holes (10) along the radial direction, the limiting holes (10) are communicated with the sliding groove (4) and penetrate through limiting bolts (11), and the limiting bolts (11) are in threaded connection with the sliding block (5).

5. A fall arrest device for bridge construction according to claim 3 or 4, wherein: the anti-throwing bridge is characterized by further comprising a reinforcing column (12), wherein the reinforcing column (12) is located between two adjacent columns (2), the upper portion of the reinforcing column (12) is detachably connected with the anti-throwing net (3), and the lower portion of the reinforcing column (12) is fixedly connected with the bridge.

6. A fall arrest device according to claim 5, wherein: the anti-throwing net is characterized by further comprising a second clamping piece (13), a second through hole (14) is formed in the upper portion of the reinforcing column (12), and the second clamping piece (13) penetrates through the second through hole (14) to be clamped with the anti-throwing net (3).

7. A fall arrest device according to claim 6, wherein: the lower end of the reinforcing column (12) is of an inverted U-shaped structure, fixing holes (15) corresponding to each other one by one are formed in the two sides of the inverted U-shaped structure, the inverted U-shaped structure is inserted into the concrete guardrail (1), fixing bolts (16) penetrating through the concrete guardrail (1) penetrate through the fixing holes (15), and the inverted U-shaped structure is connected with the concrete guardrail (1) through the fixing bolts (16).

8. A fall arrest device according to claim 7, characterised in that: first joint spare (7) and second joint spare (13) all include joint nut (17) and joint bolt (18), the through-hole is seted up to joint nut (17) cavity and a terminal surface, be provided with on joint bolt (18) with the dog of through-hole adaptation, the dog is worn to establish the through-hole and with joint nut (17) rotatory joint.

9. A fall arrest device according to claim 7, characterised in that: the through hole is 8-shaped.

10. A fall arrest device according to claim 1, characterised in that: connecting pieces (6) are arranged on two opposite sides of the sliding block (5), the connecting pieces (6) are fixedly connected with the sliding block (5) and located on two sides of the upright post (2), second connecting holes (20) are formed in the side faces, adjacent to the connecting pieces (6), of the sliding block (5), and a plurality of second limiting holes (19) are formed in the side faces, adjacent to the connecting pieces (6), of the upright post along the radial direction.