CN217781713U - Device for preventing high-strength bolt from falling - Google Patents

Abstract

The utility model provides a device for preventing high-strength bolt from falling, high-strength bolt includes spiral shell head, screw rod, nut and spiral shell tail silk mouth, and high-strength bolt array sets up and is used for connecting two steel construction members, the device includes the nut and the spiral shell tail silk mouth one end that set up the high-strength bolt that array set up and whole grid net perpendicular to the screw rod, sets up totally four via holes in grid net's peripheral position at least, and each via hole is used for supplying corresponding spiral shell tail silk mouth to pass, and the nut of via hole department does not pass; the device also comprises at least four light nuts which are screwed on the screw tail ports penetrating through the through holes, so that the grid net and the light nuts are directly or indirectly fixed on the high-strength bolt array and the steel structural member and used for preventing any one or more of the high-strength bolts arranged in an array manner from falling off after being broken. This patent device simple structure, and can effectively prevent that arbitrary one or more high strength bolt in the high strength bolt array from falling after arbitrary position fracture.

Description

Device for preventing high-strength bolt from falling

Technical Field

The utility model relates to an engineering device field, concretely relates to prevent device that high-strength bolt falls.

Background

Steel structural members of steel structural bridges (including highway bridges, railway bridges and the like) are generally connected by high-strength bolts, and the high-strength bolts are in a high-stress state at all times after being screwed, so that the high-strength bolts are gradually broken along with the prolonging of the service life. The broken high-strength bolt can fall under the action of gravity, and the safety of vehicles, pedestrians, structures and the like below the bridge is seriously harmed. In order to avoid the fall of the high-strength bolt, a method for preventing the high-strength bolt on the bridge from falling after being broken is needed in the field.

Chinese utility model patent CN201720621671 relates to a bridge construction anti-falling device, including the construction support body, the construction support body fixes external crossbeam body on the outer terminal surface of support body, external crossbeam body up end sets up the triangle-shaped plate to the support body outside slant, triangle-shaped plate upper end inclined surface sets up the hose glue layer, the support body top of construction support body sets up the protection lid, the preceding terminal surface of protection lid sets up fastening bolt. The utility model discloses a can prevent effectively that high altitude junk from pounding people and constructor carelessly fall the tumble injury, improve the fastness of construction support body, improve the security of bridge construction, guarantee constructor's personal safety.

Chinese utility model patent CN202120246702 discloses a bridge construction anti-falling device with locate function, the on-line screen storage device comprises a base, the upper end surface of base is provided with hydraulic means, hydraulic means's upper end is provided with the hydraulic pressure post, the upper end of hydraulic pressure post is provided with the protection network, the upper end of protection network is provided with the fixed block, the lower extreme of protection network is provided with the protection pad, the lower extreme that the protection was filled up is provided with the supporting shoe, the side surface of base is provided with the fixed plate. This bridge construction anti falling device with locate function uses to carry on spacingly to the protection network through setting up four hydraulic pressure posts, the height-adjusting of being convenient for simultaneously, through being provided with the protection pad at the protection network lower extreme, the multilayer protection improves the security performance, for workman's life safety provides the guarantee, make the clamp plate touch ground through being provided with the pneumatic cylinder, the stability of reinforcing device when placing, make the device be convenient for remove through the universal wheel, reduce staff's intensity of labour, promote the workman of being convenient for through pushing away.

Above-mentioned patent all relates to staff's safety protection during the bridge construction to do not relate to when the bridge operation is used, how to prevent to fall behind the high-strength bolt fracture on the bridge.

The Chinese patent application CN201711486001 discloses a high-strength bolt falling protection device for a steel truss bridge, which comprises a bolt falling prevention device arranged on the steel structure bridge, wherein the bolt falling prevention device comprises fixing devices, main cables, branch cables, sensors and bolt assemblies, two sides of each main cable are respectively connected and fixed with the fixing devices fixed on the steel structure bridge, the sensors are fixed between the two fixing devices through the main cables, the branch cables are arranged in more than one group and arranged outside the main cables side by side, two sides of each branch cable are fixed on two sides of each main cable through the bolt assemblies, and the branch cables press the main cables downwards. The steel truss bridge monitoring device is convenient, reliable and safe to install, cannot damage the steel truss bridge, is easy to debug and disassemble, and not only has a protection function, but also has an accurate real-time monitoring function.

The high-strength bolt protector can achieve a certain protection function on the falling of the high-strength bolt, but the protection device is complex in structure and is not practical in the bridge application process.

Therefore, there is still a need in the art for a new device for preventing high-strength bolts from falling after breaking.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent device that high strength bolt falls, high strength bolt includes spiral shell head, screw rod, nut and spiral shell tail silk mouth, high strength bolt array sets up and is used for connecting two steel structural component, the device includes the nut and the spiral shell tail silk mouth one end that set up the high strength bolt that array set up and whole grid net perpendicular with the screw rod, the peripheral position of grid net sets up totally four via holes at least, and every via hole is used for supplying corresponding spiral shell tail silk mouth to pass, and the nut of via hole department does not pass; the device also comprises at least four light nuts which are screwed on the screw thread openings penetrating through the through holes, so that the grid net and the light nuts are directly or indirectly fixed on the high-strength bolt array and the steel structural member and used for preventing any one or more of the high-strength bolts arranged in an array form from falling after being broken.

In a specific implementation mode, the device still includes two piece at least high strength bolt gusset plates, two steel structural component butt joints set up, and respectively hug closely in two steel structural component thickness direction's both sides and be provided with a high strength bolt gusset plate, the high strength bolt gusset plate is used for connecting two steel structural component, makes grid net and light nut pass through high strength bolt and fix on high strength bolt gusset plate and steel structural component.

In a specific embodiment, the grid mesh is a steel wire mesh, and the light nuts are plastic nuts.

In a specific embodiment, the grid net comprises a rectangular main structure and folding parts, and the folding parts are arranged at four sides of the main structure, so that the grid net is integrally box-shaped; the four through holes and the four light nuts are respectively arranged at the four corners of the main body structure.

In a specific implementation mode, the number of the through holes is more than 6, and a through hole and a light nut are respectively arranged in the middle of two long sides of the rectangular main body structure.

Device simple structure, and can effectively prevent that arbitrary one or more high strength bolt in the high strength bolt array from falling after arbitrary position fracture.

Drawings

Fig. 1 is a schematic view of the main view of the device for preventing high-strength bolt from falling after fracture.

Fig. 2 is the utility model discloses in prevent the left side view schematic diagram that the device that falls after the high strength bolt fracture was used.

In fig. 1 and 2: the high-strength bolt grid structure comprises a grid net 1, a high-strength bolt 2, a light nut 3, a high-strength bolt node plate 4, a steel structural member 5, a through hole 11, a folding portion 12, a screw head 21, a screw rod 22, a nut 23 and a screw tail port 24.

Detailed Description

As shown in fig. 1 and fig. 2, the utility model provides a device for preventing high-strength bolt from falling, high-strength bolt includes spiral shell head, screw rod, nut and spiral tail silk mouth, high-strength bolt array sets up and is used for connecting two steel structural members, the device includes the nut that sets up the high-strength bolt that array set up and spiral tail silk mouth one end and whole and the grid net perpendicular to the screw rod, sets up totally four via holes in the peripheral position of grid net at least, and each via hole is used for supplying corresponding spiral tail silk mouth to pass, and the nut of via hole department does not pass; the device also comprises at least four light nuts which are screwed on the screw tail ports penetrating through the through holes, so that the grid net and the light nuts are directly or indirectly fixed on the high-strength bolt array and the steel structural member and used for preventing any one or more of the high-strength bolts arranged in an array manner from falling off after being broken.

The utility model discloses in, high strength bolt is steel construction high strength bolt, promptly high strength bolt's spiral shell head 21, screw rod 22, nut 23 and spiral shell tail silk mouth 24 are the steel construction.

As shown in fig. 2, the steel structural member 5 is generally a box-shaped member or an i-beam member, and thus the head 21 of the high-strength bolt 2 is generally disposed inside the steel structural member 5, and the screw throat 24 and the nut 23 are generally disposed outside the steel structural member 5. Therefore, in the present invention, although the specific broken portion of the high-strength bolt 2 is not determined, it is generally only necessary to prevent the screw thread port 24, the nut 23, and the screw rod 22 from falling from the outside of the steel structural member 5.

The steel structural members 5 shown in fig. 1 and 2 are in a butt joint type, and therefore, it is necessary to connect two steel structural members 5 in a butt joint by using the high-strength bolt gusset plates 4 through the array type high-strength bolts 2, and the high-strength bolt gusset plates 4 are provided on both sides of the butt joint steel structural members 5 in the thickness direction. As will be understood by those skilled in the art, when the two steel structural members 5 are arranged in an overlapping manner, the high-strength bolt gusset plate 4 may not be additionally arranged, and only the array-type high-strength bolts 2 need to be used to connect the two overlapping steel structural members 5.

In a specific embodiment, the screw rods 22 of the high-strength bolts 2 may be arranged horizontally, vertically or obliquely, and in general, the net surface of the grid net 1 is kept perpendicular to the screw rods 22 of the array-type high-strength bolts 2 or close to perpendicular to the screw rods 22, so that the grid net 1 may also be arranged horizontally, vertically or obliquely.

The utility model discloses in, array's the back is screwed up to the nut 23 of the 2 high strength bolt, generally all can leave several silk mouths at the bolt afterbody, and the spiral shell tail silk mouth 24 of 2 high strength bolt can expose outside nut 23 promptly, therefore respectively opens a via hole 11 in the four corners position of grid net 1 and lets spiral shell tail silk mouth 24 expose grid net 1, and nut 23 does not expose grid net 1, again twist on the spiral shell tail silk mouth 24 that exposes light nut 3 can.

The utility model discloses in, the high strength bolt 2's that the high strength bolt node board 4 that shows on the left side and the right side in fig. 2 corresponds screw rod 22 all is in the horizontality completely, therefore grid net 1 is in vertical face basically, and grid net 1 still can hold high strength bolt 2 after the fracture and let it not fall this moment, and this is because grid net 1 can give certain pressure to every spiral shell tail silk mouth 24 in the high strength bolt 2 array, therefore pushes down high strength bolt 2 after the fracture, makes it not fall. In addition, preferably grid net 1 still includes folding portion 12, and when same grid net 1 all set up folding portion 12 all around, make grid net 1 is whole to be the box cover type, folding portion 12 can catch up cracked high strength bolt better, consequently can further all-round catch up in case the high strength bolt that drops.

In addition, in order to make the grid net 1 more stable, more through holes 11 can be added at intervals in the middle of the large-area grid net, so as to expose more screw threads 24, and the light-weight screw caps 3 can be screwed on the screw threads.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not intended that the present invention be limited to these specific embodiments. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the design, can also make a plurality of simple deductions and replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (5)

1. The device for preventing the high-strength bolt from falling comprises a bolt head (21), a screw rod (22), a nut (23) and a screw tail port (24), wherein the high-strength bolt (2) is arranged in an array mode and used for connecting two steel structural members (5), and is characterized by comprising a grid net (1) which is arranged at one end of the nut (23) and the screw tail port (24) of the high-strength bolt (2) arranged in the array mode and is integrally vertical to the screw rod (22), at least four through holes (11) are formed in the peripheral position of the grid net (1), each through hole (11) is used for allowing the corresponding screw tail port (24) to pass through, and the nut (23) at the position of each through hole (11) does not pass through; the device also comprises at least four light nuts (3) which are screwed at the screw thread openings (24) penetrating through the through holes (11), so that the grid net (1) and the light nuts (3) are directly or indirectly fixed on the high-strength bolt (2) array and the steel structural member (5) and used for preventing any one or more of the high-strength bolts arranged in an array form from falling after being broken.

2. The device according to claim 1, characterized in that the device further comprises at least two high-strength bolt node plates (4), the two steel structural members (5) are arranged in a butt joint mode, one high-strength bolt node plate (4) is arranged on each of two sides of the two steel structural members (5) in the thickness direction in a tightly-attached mode, and the high-strength bolt node plates (4) are used for connecting the two steel structural members (5), so that the grid net (1) and the light nuts (3) are fixed on the high-strength bolt node plates (4) and the steel structural members (5) through high-strength bolts.

3. The device according to claim 1 or 2, characterized in that the grille net (1) is a steel wire net and the light nuts (3) are plastic nuts.

4. The device according to claim 2, characterized in that the grille net (1) comprises a rectangular main body structure and folds (12), and the folds (12) are arranged at four sides of the main body structure, so that the grille net (1) is box-shaped as a whole; the four through holes (11) and the four light screw caps (3) are respectively arranged at four corners of the main body structure.

5. The device according to claim 4, characterized in that the number of the through holes (11) is more than 6, and a through hole (11) and a light nut (3) are respectively arranged in the middle of the two long sides of the rectangular main body structure.

Images