CN219932676U

CN219932676U - Steel construction antiskid bolt

Info

Publication number: CN219932676U
Application number: CN202320902404.4U
Authority: CN
Inventors: 吴其良
Original assignee: Jiaxing Shenglong Hardware Technology Co ltd
Current assignee: Jiaxing Shenglong Hardware Technology Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-10-31
Anticipated expiration: 2033-04-19

Abstract

The utility model provides a steel structure anti-skid bolt which comprises an inner hexagon bolt, a double-stacked washer, a hexagon nut, a hexagon slotted nut and a cotter pin, wherein the double-stacked washer, the hexagon nut and the hexagon slotted nut are sequentially arranged between the inner hexagon bolt and the cotter pin, a circular screw through hole is formed in a rod body of the inner hexagon bolt, a plurality of open slots are formed in the hexagon slotted nut, and the cotter pin is inserted into the circular screw through hole from the open slots of the hexagon slotted nut, and then the tail of the cotter pin is broken off and matched with the hexagon slotted nut to complete locking of the bolt. The utility model has reasonable and simple structure, solves the problem that the contact surface of the bolt is relatively displaced due to vibration, impact and other reasons by adopting the double-nut structure of the double-stacked washer structure, the hexagonal nut and the hexagonal slotted nut, and can not ensure the stability and the safety of the steel structure connected by the bolt because the bolt or the nut is loose and skidded and loses the pretightening force and then loses the function of the bolt connection after long-time use.

Description

Steel construction antiskid bolt

Technical Field

The utility model relates to the technical field of bolt processing, in particular to the technical field of steel structure anti-skid bolts.

Background

With the development of economy, the steel structure is increasingly applied to industrial plants and civil buildings, the application of the steel structure bolts which are important parts of installation connection in the steel structure design in the modern industry is more extensive, and the steel structure bolts are high-strength bolt standard components which are mainly applied to the fastening effect in the steel structure engineering project, and have the characteristics of simple construction, good stress performance, detachability and fatigue resistance.

However, in the steel structure connection, the contact surface of the bolt inevitably displaces relatively due to vibration, impact, dynamic load and the like of the steel structure, so that the bolt or the nut is gradually loosened, if the steel structure bolt is used for a long time, the bolt is in slipping, the bolt loses pretightening force and then loses the function of the bolt connection, and the stability and the safety of the steel structure connected through the bolt cannot be guaranteed.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a steel structure anti-skid bolt, which aims to solve the problems that the contact surface of the bolt is relatively displaced due to vibration, impact and the like of the steel structure bolt, the bolt or the nut is loose and skid and loses pretightening force after long-time use, the function of bolting is lost, and the stability and the safety of the steel structure connected by the bolt cannot be guaranteed.

In order to achieve the above purpose, the utility model provides a steel structure anti-skid bolt, which comprises an inner hexagonal bolt, a double-stacked washer, a hexagonal nut, a hexagonal slotted nut and a cotter pin, wherein the double-stacked washer, the hexagonal nut and the hexagonal slotted nut are sequentially arranged between the inner hexagonal bolt and the cotter pin, a circular screw through hole is arranged on a rod body of the inner hexagonal bolt, a plurality of open slots are formed in the hexagonal slotted nut, and after the cotter pin is inserted into the circular screw through hole from the open slots of the hexagonal slotted nut, the tail part of the cotter pin is broken off and matched with the hexagonal slotted nut to complete locking of the bolt.

Preferably, the hexagon socket screw comprises a screw head and a screw rod, the screw rod is a half-thread screw rod, the screw rod comprises a polish rod and a threaded rod, an inner hexagon groove is formed in the screw head, a first thread is formed in the outer surface of the threaded rod, a plurality of circular screw through holes are formed in the centers of a plurality of cross sections of the threaded rod, a plurality of circular screw through holes are formed between the first threads, the polish rod in the screw rod can be matched with the preset holes more tightly and is not easy to displace, and more production cost can be saved due to the design of the half threads.

Preferably, the double-stacked washer comprises an upper washer and a lower washer, the upper washer and the lower washer are annular with equal outer diameter and inner diameter, the upper washer and the lower washer are stacked to form a circular gap with the annular center, the diameter of the circular gap is equal to that of a screw rod in the inner hexagon bolt, the upper washer and the lower washer are arranged on the inner hexagon bolt through the circular gap, the upper surface of the upper washer is provided with a first radial fine tooth, the lower surface of the upper washer is provided with a first radial wide tooth, the upper surface of the lower washer is provided with a second radial wide tooth, the lower surface of the lower washer is provided with a second radial fine tooth, the first radial wide tooth is fixedly meshed with the second radial wide tooth, the inclination angle alpha of the first radial wide tooth and the second radial wide tooth is larger than the inclination angle beta of the first thread in the inner hexagon bolt, the design of the radial fine tooth can enhance the friction force between the bolt and a connected piece, and when the connecting piece is vibrated and the connecting piece is enabled to loosen, the two pieces of the anti-loose bolt can be prevented from sliding relatively.

Preferably, the inner diameter of the hexagonal nut is equal to the diameter of the screw rod in the inner hexagonal bolt, the inner surface of the hexagonal nut is provided with a second thread, the second thread of the inner surface of the hexagonal nut is mutually matched with the first thread of the outer surface of the threaded rod in the inner hexagonal bolt, and the hexagonal nut is mutually matched with the first thread through the second thread to be arranged on the inner hexagonal bolt, so that the hexagonal nut can be better arranged on the inner hexagonal bolt.

Preferably, the hexagonal slotting nut comprises a hexagonal nut section and a hexagonal slotting nut section, the inner diameter of the hexagonal nut section is equal to the inner diameter of the hexagonal slotting nut section, the inner diameter of the hexagonal nut section is equal to the diameter of a screw rod in the hexagon socket head cap nut, the inner surface of the hexagonal nut section is provided with a third thread, the third thread of the inner surface of the hexagonal nut section is mutually matched with a first thread arranged on the outer surface of a threaded rod in the hexagon socket head cap nut, the hexagonal slotting nut is mutually matched with the first thread through the third thread and is arranged on the hexagon socket head cap nut, the hexagonal slotting nut section is formed by connecting a plurality of grooved posts through open slots, the open slots are semicircular arcs, a plurality of grooved posts are vertically arranged on each side of the hexagonal nut section, the outer side surfaces of the grooved posts are kept flush with the outer side surfaces of the hexagonal nut section, the inner side surfaces of the grooved posts are provided with fourth threads, the fourth threads of the inner side surfaces of the grooved posts are mutually matched with the first threads of the outer surface of the threaded rod in the hexagon socket head cap nut, the grooved posts can be better arranged on the hexagon socket head cap nut, and the grooved bolts can be matched with the open bolt to produce better anti-slip effect.

Preferably, the cotter pin comprises a cotter pin head and cotter pin rods, the cotter pin head is round with openings, two ends of the cotter pin head are respectively connected with a plurality of cotter pin rods, the inner sides of the cotter pin rods are propped against each other, the diameter of the cotter pin head is larger than the diameter of an open slot in a hexagonal slotted nut, the width of the propped cotter pin rods is smaller than the diameter of a round screw through hole in the hexagon socket head cap screw, the length of the cotter pin rod is larger than the diameter of a screw in the hexagon socket head cap screw, and the tail of the cotter pin can penetrate through the round screw through hole and be broken off to cooperate with the slotted nut to generate an anti-skid effect

The utility model has the beneficial effects that: compared with the prior art, the steel structure anti-skid bolt is reasonable and simple in structure, the double-nut structure of the double-stacked washer structure, the hexagon nut and the hexagonal slotted nut is adopted to solve the problem that the contact surface of the bolt is displaced relatively due to vibration, impact and the like, the bolt or the nut is loosened and skidded to lose pretightening force and further lose the function of bolt connection after long-time use, the double-stacked washer structure can not only enhance friction force between the bolt and a connected piece, but also can prevent the bolt from loosening when the connecting piece is subjected to vibration and the bolt is loosened, only axial force generated between wide teeth of two washers relatively dislocates to enhance the anti-skid and anti-loosening capacity of the bolt, the friction force between the nut and the bolt is increased by the double nut after the double nut is screwed, so that the bolt is prevented from slipping and loosening by the slotted nut and the split pin, and stability and safety of the steel structure connected by the bolt can be further improved.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a steel construction anti-skid bolt according to the present utility model.

Fig. 2 is a schematic structural view of an inner hexagon bolt in the steel structure anti-skid bolt of the present utility model.

FIG. 3 is a schematic view of a double-stacked washer in a steel construction anti-skid bolt of the present utility model.

Fig. 4 is a schematic structural view of a hexagonal nut in a steel structure anti-skid bolt according to the present utility model.

Fig. 5 is a schematic structural view of a hexagonal slotted nut in a steel structural anti-skid bolt of the present utility model.

Fig. 6 is a schematic view of the structure of cotter pin in a steel structure anti-skid bolt of the present utility model.

In the figure: 1-socket head cap nut, 2-double washer, 3-hex nut, 4-hex slotted nut, 5-cotter, 11-bolt head, 12-hex socket, 13-screw, 14-polish rod, 15-threaded rod, 16-first thread, 17-round screw through hole, 18-angle of inclination β, 21-upper washer, 22-round void, 23-lower washer, 24-first radial serrations, 25-radial wide teeth, 26-second radial wide teeth, 27-second radial serrations, 28-angle of inclination α, 31-second thread, 41-hex nut segment, 42-third thread, 43-hex slotted nut segment, 44-slot post, 45-fourth thread, 46-cotter, 51-cotter head, 52-cotter pin.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Referring to fig. 1, the steel structure anti-skid bolt comprises an inner hexagonal bolt 1, a double-stacked washer 2, a hexagonal nut 3, a hexagonal slotted nut 4 and a cotter pin 5, wherein the double-stacked washer 2, the hexagonal nut 3 and the hexagonal slotted nut 4 are sequentially arranged between the inner hexagonal bolt 1 and the cotter pin 5, a circular screw through hole 17 is formed in a rod body of the inner hexagonal bolt 1, a plurality of open slots 46 are formed in the hexagonal slotted nut 4, and the cotter pin 5 is inserted into the circular screw through hole 17 from the open slots 46 of the hexagonal slotted nut 4, and then the tail part of the cotter pin 5 is broken off and matched with the hexagonal slotted nut 4 to complete locking of the bolt.

Referring to fig. 2, the socket head cap screw 1 includes a screw head 11 and a screw 13, the screw 13 is a half-thread screw, the screw includes a polish rod 14 and a threaded rod 15, an inner hexagonal groove 12 is provided in the screw head 11, a first thread 16 is provided on the outer surface of the threaded rod 15, a plurality of circular screw through holes 17 are provided in the center of a plurality of cross sections of the threaded rod 15, a plurality of circular screw through holes 17 are provided between the first threads 16, the polish rod 14 in the screw 13 can be matched with a preset hole more tightly and less easily to displace, and the design of the half-thread can save more production cost.

Referring to fig. 3, the double-stacked washer 2 includes an upper washer 21 and a lower washer 23, the upper washer 21 and the lower washer 23 are annular with equal outer diameter and inner diameter, the upper washer 21 and the lower washer 23 are stacked to form an annular central circular gap 22, the diameter of the circular gap 22 is equal to that of the screw 13 in the hexagon socket head cap screw 1, the upper washer 21 and the lower washer 23 are arranged on the hexagon socket head cap screw 1 through the circular gap 22, a first radial fine tooth 24 is arranged on the upper surface of the upper washer 21, a first radial wide tooth 25 is arranged on the lower surface of the upper washer 21, a second radial wide tooth 26 is arranged on the upper surface of the lower washer 23, a second radial fine tooth 27 is arranged on the lower surface of the lower washer 23, the first radial wide tooth 25 is fixedly meshed with the second radial wide tooth 26, the inclination angle alpha 28 of the first radial wide tooth 25 and the second radial wide tooth 26 are larger than the inclination angle beta 18 of the first thread 16 in the hexagon socket head cap screw 1, and the radial wide tooth 1 is designed to be in a sliding-proof connection with a sliding-proof piece only when the two radial-shaped fine teeth are in a sliding-connection mode, and the sliding-proof force is allowed to be increased.

Referring to fig. 4, the inner diameter of the hexagonal nut 3 is equal to the diameter of the screw 13 in the socket head cap bolt 1, the second thread 31 is provided on the inner surface of the hexagonal nut 3, the second thread 31 on the inner surface of the hexagonal nut is mutually engaged with the first thread 16 on the outer surface of the threaded rod 15 in the socket head cap bolt 1, and the hexagonal nut 3 is mutually engaged with the first thread 16 through the second thread 31 to be arranged on the socket head cap bolt 1, so that the hexagonal nut 3 can be better arranged on the socket head cap bolt 1.

Referring to fig. 5, the hexagonal slotting nut 4 comprises a hexagonal nut section 41 and a hexagonal slotting nut section 43, the inner diameter of the hexagonal nut section 41 is equal to the inner diameter of the hexagonal slotting nut section 43, the inner diameter of the hexagonal nut section 41 is equal to the diameter of the screw 13 in the hexagonal nut section 1, the inner surface of the hexagonal nut section 41 is provided with a third thread 42, the third thread 42 of the inner surface of the hexagonal nut section 41 is mutually matched with the first thread 16 arranged on the outer surface of the threaded rod 15 in the hexagonal nut section 1, the hexagonal slotting nut 4 is mutually matched with the first thread 16 on the hexagonal nut 1 through the third thread 42, the hexagonal slotting nut section 43 is formed by connecting a plurality of grooved posts 44 through open slots 46, the open slots 46 are semicircular arcs, a plurality of grooved posts 44 are vertically arranged above the hexagonal nut section 41, the outer side surfaces of the grooved posts 44 are kept flush with the outer side surfaces of the hexagonal nut section 41, the inner side surfaces of the grooved posts 44 are provided with fourth threads 45, the fourth threads 45 of the inner side surfaces of the grooved posts 44 are mutually matched with the first thread 16 in the hexagonal nut section 1, and the inner surfaces of the grooved posts 4 are mutually matched with the first thread 16 in the hexagonal nut section 1, and the threaded rod 4 can be better matched with the threaded rod 4, and the threaded rod can be prevented from sliding on the threaded rod 1.

Referring to fig. 6, the cotter 5 includes a cotter head 51 and cotter rods 52, the cotter head 51 is circular with openings, two ends of the cotter head 51 are respectively connected with a plurality of cotter rods 52, the inner sides of the cotter rods 52 are propped against each other, the diameter of the cotter head 51 is larger than the diameter of the open slot 46 in the hexagonal slotted nut 4, the width of the propped cotter rods 52 is smaller than the diameter of the circular screw through hole 17 in the hexagonal socket bolt 1, the length of the cotter rods 52 is larger than the diameter of the screw 13 in the hexagonal socket bolt 1, and the tail of the cotter 5 can pass through the circular screw through hole 17 and be broken off to cooperate with the slotted nut 4 to generate an anti-slip effect.

The working process of the utility model comprises the following steps:

in the working process of the steel structure anti-skid bolt, firstly, the anti-skid bolt is arranged on the outer side of the steel structure. The utility model discloses a double-stacked washer, which is characterized in that a double-stacked washer 2 is arranged on an inner hexagon bolt 1, then the inner hexagon bolt 1 provided with the double-stacked washer 2 passes through a preset hole arranged by a connecting piece, then a hexagon bolt 3 is arranged on the inner hexagon bolt 1 at the other side of the preset hole and is screwed down, a slotted nut 4 is arranged at the outer side of the hexagon bolt 3 and is screwed down, finally a cotter pin 5 passes through a circular screw through hole 17 arranged in a threaded rod 15 in the inner hexagon bolt 1 along an open slot 46 of the slotted nut 4, the tail part of the cotter pin 52 of the cotter pin 5 is broken off and is matched and fixed with a plurality of grooved studs 44 of the slotted nut 4 to form an anti-slip structure.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims

1. The utility model provides a steel construction antiskid bolt which characterized in that: including hexagon socket head cap screw (1), double packing ring (2), hexagon nut (3), hexagonal slotted nut (4) and cotter (5), have set gradually between hexagon socket head cap screw (1) and cotter (5) double packing ring (2), hexagon nut (3) and hexagonal slotted nut (4), hexagon socket head cap screw (1) shaft is provided with circular screw rod through-hole (17), hexagon slotted nut (4) are provided with a plurality of open slots (46), cotter (5) are broken open cotter (5) afterbody and are accomplished the locking of bolt with hexagonal slotted nut (4) cooperation after inserting circular screw rod through-hole (17) from open slot (46) of hexagonal slotted nut (4).

2. A steel construction anti-skid bolt as set forth in claim 1, wherein: the inner hexagonal bolt (1) comprises a bolt head (11) and a screw rod (13), the screw rod (13) is a half-thread screw rod, the screw rod comprises a polished rod (14) and a threaded rod (15), an inner hexagonal groove (12) is formed in the bolt head (11), a first thread (16) is formed in the outer surface of the threaded rod (15), a plurality of circular screw rod through holes (17) are formed in the centers of a plurality of cross sections of the threaded rod (15), and a plurality of circular screw rod through holes (17) are formed between the first threads (16).

3. A steel construction anti-skid bolt as set forth in claim 1, wherein: the double-stacked washer (2) comprises an upper washer (21) and a lower washer (23), the upper washer (21) and the lower washer (23) are annular with equal outer diameter and inner diameter, a circular gap (22) is formed by stacking the upper washer (21) and the lower washer (23) in an annular center, the diameter of the circular gap (22) is equal to that of a screw (13) in the inner hexagonal bolt (1), the upper washer (21) and the lower washer (23) are arranged on the inner hexagonal bolt (1) through the circular gap (22), a first radial fine tooth (24) is arranged on the upper surface of the upper washer (21), a first radial wide tooth (25) is arranged on the lower surface of the upper washer (21), a second radial wide tooth (26) is arranged on the upper surface of the lower washer (23), the second radial fine tooth (27) is arranged on the lower surface of the lower washer (23), the first radial wide tooth (25) is fixedly meshed with the second radial wide tooth (26), and the first radial wide tooth (25) is larger than the second radial wide tooth (26) in the first radial wide tooth (16) and the second radial wide tooth (26) is inclined at an angle larger than the first radial wide tooth (16).

4. A steel construction anti-skid bolt as set forth in claim 1, wherein: the inner diameter of the hexagonal nut (3) is equal to the diameter of the screw rod (13) in the inner hexagonal bolt (1), the second thread (31) is arranged on the inner surface of the hexagonal nut (3), the second thread (31) of the inner surface of the hexagonal nut is mutually matched with the first thread (16) of the outer surface of the threaded rod (15) in the inner hexagonal bolt (1), and the hexagonal nut (3) is mutually matched with the first thread (16) through the second thread (31) to be arranged on the inner hexagonal bolt (1).

5. A steel construction anti-skid bolt as set forth in claim 1, wherein: the hexagonal slotting nut (4) comprises a hexagonal nut section (41) and a hexagonal slotting nut section (43), the inner diameter of the hexagonal nut section (41) is equal to the inner diameter of the hexagonal slotting nut section (43), the inner diameter of the hexagonal nut section (41) is equal to the diameter of a screw rod (13) in the hexagonal bolt (1), the inner surface of the hexagonal nut section (41) is provided with a third thread (42), the third thread (42) of the inner surface of the hexagonal nut section (41) is mutually matched with a first thread (16) arranged on the outer surface of a threaded rod (15) in the hexagonal bolt (1), the hexagonal slotting nut (4) is mutually matched with the first thread (16) through the third thread (42) and is arranged on the hexagonal bolt (1), the hexagonal slotting nut section (43) is formed by connecting a plurality of grooved columns (44) through open grooves (46), the open grooves (46) are semicircular arcs, a plurality of grooved columns (44) are vertically arranged on each side of the hexagonal nut section (41), the inner side surfaces of the hexagonal nut section (41) are kept flush with the inner side surfaces of the hexagonal columns (45), the fourth thread (45) on the inner side surface of the groove column (44) is mutually matched with the first thread (16) on the outer surface of the threaded rod (15) in the inner hexagon bolt (1).

6. A steel construction anti-skid bolt as set forth in claim 1, wherein: cotter pin (5) are including cotter pin head (51) and cotter pin pole (52), cotter pin head (51) are for containing open-ended circular, a plurality of cotter pin poles (52) are connected respectively at cotter pin head (51) both ends, a plurality of cotter pin poles (52) inboard offsets, the diameter of cotter pin head (51) is greater than the diameter of open slot (46) in hexagonal slotted nut (4), the width of a plurality of cotter pin poles (52) of offset is less than the diameter of circular screw rod through-hole (17) in hexagon socket head cap screw (1), the length of cotter pin pole (52) is greater than the diameter of screw rod (13) in hexagon socket head cap screw (1).