CN213596784U

CN213596784U - Take anti-drop device's bolt fastening structure for bridge

Info

Publication number: CN213596784U
Application number: CN202022081801.9U
Authority: CN
Inventors: 王新明; 李秉南; 徐汉江; 李巧生; 徐秀丽
Original assignee: Suzhou Waterway Administration Office Jiangsu Province; Architects & Engineers Co Ltd Of Southeast University; Nanjing Tech University
Current assignee: Suzhou Waterway Administration Office Jiangsu Province; Architects & Engineers Co Ltd Of Southeast University; Nanjing Tech University
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-07-02
Anticipated expiration: 2030-09-22

Abstract

A bolt fixing structure with an anti-falling device for a bridge comprises a bolt with grooves at two ends, the bolt anti-falling device, a nut and a washer. The bolt with the grooves at the two ends penetrates through the first steel plate and the second steel plate and then is screwed with the inherent nut, and the bolt anti-falling device integrally made of anti-aging rubber is fixed at the two ends of the bolt. Bolt dropout prevention means includes rubber buffer, location boss, pressure pull head and rubber rope, and the rubber buffer divides both sides to insert in the bolt head recess and the screw rod recess of corresponding bolt, and there is a location boss of area pressure pull head and links to each other through the rubber rope between the adjacent location boss of homonymy above every rubber buffer. The utility model discloses simple structure, simple to operate, economy are effective, can avoid the bolt to drop and cause the potential safety hazard to be suitable for the practicality more, and have the industrial value of utilizing.

Description

Take anti-drop device's bolt fastening structure for bridge

Technical Field

The utility model relates to a bridge engineering disaster prevention and reduction field especially involves a take anti-drop device's bolt fastening structure for bridge.

Background

At present, with the great promotion of steel structure bridge construction in China, steel bridges, particularly steel trusses, which are connected by high-strength bolts are widely applied to high-speed railway bridges and highway bridges. However, in practical engineering, the phenomenon of bolt falling caused by bolt breakage or looseness sometimes occurs, and once the bolt at a high position falls off, driving safety is seriously affected, so that great potential safety hazards are created for bridge safety operation. At present, the coping method aiming at the diseases is very deficient, and the fallen bolts are mainly picked up through manual inspection. In order to ensure the safety of patrolmen, the traffic must be closed during patrolling, so that the efficiency of traffic facilities is reduced; meanwhile, the thoroughness of manual inspection and pickup is difficult to guarantee, and in case of missing inspection, serious consequences can be caused to vehicles running at high speed, particularly high-speed railway trains.

The existing device for preventing the bolt from falling off mainly comprises a bolt protective net cover, is troublesome to manufacture and high in cost, and is inconvenient to use because the bolt protective net cover needs to be integrally replaced when being locally damaged, and the appearance of the structure cannot be well considered.

SUMMERY OF THE UTILITY MODEL

To solve the above existing problems. The utility model provides a take anti-drop device's bolt fastening structure for bridge, this structure simple structure, simple to operate, economy are effective, can avoid the bolt to drop and cause the potential safety hazard to be suitable for the practicality more, and have the industrial value of utilizing. To achieve this object:

the utility model provides a take dropout prevention means's bolt fastening structure for bridge, take bolt, bolt dropout prevention means, nut and packing ring, its characterized in that of recess including both ends: steel construction plate for bridge includes that first steel sheet and second steel sheet pass and the bolt both ends all are equipped with bolt dropout prevention means by at least one row of both ends area recess bolt, the bolt of both ends area recess is furnished with the packing ring and passes and twists natural nut behind first steel sheet and the second steel sheet, the recess at the bolt both ends of both ends area recess includes bolt head recess and screw rod recess, and the recess is cylindrically, and the recess center aligns with the screw rod center, bolt dropout prevention means includes rubber buffer, location boss, pressure pull head and rubber rope, every recess of the bolt of both ends area recess corresponds a rubber buffer, and the rubber buffer divides both sides to insert in bolt head recess and the screw rod recess of the bolt of corresponding both ends area recess, and there is one above every rubber buffer to press to pull the location boss of head and link to each other through the rubber rope between the adjacent location boss of homonymy.

As a further improvement of the utility model, the bolt anti-drop device is integrally made of aging-resistant rubber, has high durability and long service life, and avoids frequent replacement of the anti-drop device; the rubber buffer is the cylinder, and this shape and the shape looks adaptation of the bolt both ends recess of recess are taken at both ends, the external diameter of rubber buffer is greater than the internal diameter size of bolt recess and rather than combine closely, can provide sufficient extrusion force after filling in bolt both ends recess.

As the utility model discloses further improve, the rubber rope is gradual change cross-section rubber rope, can increase the tensile ability of rubber rope, reduces and fixes a position the stress concentration of boss junction.

As the utility model discloses further improve, the flexible displacement of rubber rope for changing length according to the bolt interval is from rubber, and the rubber rope can change length according to the bolt interval, satisfies different bolt arrangement's demand.

The utility model has the advantages that: the utility model discloses effectively solved bolted connection steel construction bridge and adopted artifical patrol to pick up the not enough of bolt that drops, avoided the bolt to drop and cause serious consequence harm vehicle and pedestrian's safety, connect the rubber rope and link to each other for whole with the rubber buffer, have simple structure, structural style is reasonable, simple to operate, low in manufacturing cost, easily install advantages such as change, appearance are pleasing to the eye, have good engineering application prospect.

Drawings

FIG. 1 is a front view of the bolt and the anti-falling device thereof;

fig. 2 is a front view of the bolt of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a front view of the anti-falling device for bolt of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 5;

marked as 1. bolt with grooves at both ends; 2. a bolt anti-drop device; 3. a nut; 4. a gasket; 5. a first steel plate; 6. a second steel plate; 101. a bolt head groove; 102. a screw groove; 201. a rubber plug; 202. positioning the boss; 203. pressing and pulling the head; 204. a rubber rope.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

the utility model provides a take anti-drop device's bolt fastening structure for bridge, this structure simple structure, simple to operate, economy are effective, can avoid the bolt to drop and cause the potential safety hazard to be suitable for the practicality more, and have the industrial value of utilizing.

As shown in FIGS. 1-7: the utility model provides a take dropout prevention means's bolt fastening structure for bridge, the recess at 1 both ends of bolt include bolt head recess 101 and screw rod recess 102, the recess is cylindrically, and the center pin of recess center and bolt aligns. The bolt anti-drop device 2 comprises a rubber plug 201, a positioning boss 202, a pressing head 203 and a rubber rope 204, and is integrally made of anti-aging rubber.

The rubber plug 201 is a cylinder, the outer diameter size of the rubber plug is slightly larger than the inner diameter size of the bolt groove, and the press-pull head 203 is pressed along the axial direction of the bolt manually or by means of a tool during installation so as to be plugged into the bolt groove and provide enough extrusion force; the external diameter size of rubber buffer 201 needs to be confirmed according to the demand of the frictional force between bolt and the rubber buffer, and frictional force should be greater than the dead weight of bolt.

The top surface of the rubber plug 201 is provided with a positioning boss 202 for assisting the installation and positioning of the rubber plug; the top surface of the positioning boss is provided with a pressing and pulling head 203 for installation and disassembly, so that the rubber plug can be quickly and accurately fixed in the groove of the bolt, and the rubber plug can be conveniently pulled out and replaced;

the rubber buffer is 201 a plurality ofly, connects through rubber rope 204 between the location boss 202 of adjacent rubber buffer top surface, makes a plurality of bolts link to each other, avoids the bolt to drop, and when the installation, priority considers to use vertical bolt as the installation group.

The rubber rope 204 is a rubber rope with a gradually-changed section, so that the tensile capacity of the rubber rope can be increased, and the stress concentration at the joint of the rubber rope and the positioning boss 202 is reduced. The length of the rubber rope 204 can be adjusted according to the distance between the bolts, so that the requirements of different bolt arrangement modes are met.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but also to cover any modifications or equivalent changes made in the technical spirit of the present invention, which fall within the scope of the present invention.

Claims

1. The utility model provides a take anti-drop's bolt fastening structure for bridge, includes bolt (1), bolt anti-drop (2), nut (3) and packing ring (4) that both ends were taken the recess, its characterized in that: the steel structure plate for the bridge comprises a first steel plate (5) and a second steel plate (6), wherein at least one row of bolts (1) with grooves at two ends penetrates through the steel plate and bolt two ends are respectively provided with a bolt anti-falling device (2), the bolts (1) with grooves at two ends are provided with gaskets (4) and penetrate through the first steel plate (5) and the second steel plate (6) to screw inherent nuts (3), the grooves at two ends of the bolts (1) with grooves at two ends comprise bolt head grooves (101) and screw rod grooves (102), the grooves are cylindrical, the centers of the grooves are aligned with the centers of the screw rods, each bolt anti-falling device (2) comprises a rubber plug (201), a positioning boss (202), a pressure-pulling head (203) and a rubber rope (204), each groove of the bolts (1) with grooves at two ends corresponds to one bolt (201), the rubber plug (201) is respectively inserted into the bolt head grooves (101) and the screw rod grooves (102) of the bolts (1) with grooves at two ends, a positioning boss (202) with a pressure pulling head is arranged above each rubber plug (201), and adjacent positioning bosses (202) on the same side are connected through rubber ropes (204).

2. The bridge bolt fixing structure with the anti-falling device according to claim 1, characterized in that: bolt dropout prevention means (2) is made by ageing-resistant rubber is whole, rubber buffer (201) is the cylinder, the shape looks adaptation of bolt (1) both ends recess of rubber buffer (201) shape and both ends area recess, the external diameter size of rubber buffer (201) is greater than the internal diameter size of bolt head recess (101) and combines closely with it.

3. The bridge bolt fixing structure with the anti-falling device according to claim 1, characterized in that: the rubber rope (204) is a rubber rope with a gradually-changed section.

4. The bridge bolt fixing structure with the anti-falling device according to claim 1, characterized in that: the rubber rope (204) changes length according to the bolt distance.