CN215830904U

CN215830904U - Expansion bolt special for nuclear power

Info

Publication number: CN215830904U
Application number: CN202121449687.9U
Authority: CN
Inventors: 黄周杰; 钱文超; 马贤明; 张鹏轲; 马兴妙
Original assignee: Jiaxing Yiding Electromechanical Technology Co ltd
Current assignee: Jiaxing Yiding Electromechanical Technology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-15
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses an expansion bolt special for nuclear power, which comprises an expansion bolt and a bolt sleeve, wherein the expansion bolt is divided into a screw rod, a nut, a convex block and an expansion piece, a threaded section is formed in the side wall of the screw rod, the threaded section is in threaded connection with the nut, a screw head is fixedly connected to one end of the screw rod, the end, far away from the screw head, of the screw rod is fixedly connected with the convex block, the diameter of the convex block is larger than that of the screw rod, the expansion piece is sleeved on the screw rod, a limiting plate is fixedly connected to the side wall of the screw rod, the side wall of the limiting plate abuts against the side wall of the expansion piece, an insertion hole is formed in the screw head, the size of the bolt sleeve is the same as that of the screw head, a limiting mechanism is arranged in the bolt sleeve, and the limiting mechanism abuts against the inner wall of the insertion hole. The bolt sleeve can be used for protecting the fixed expansion bolt, and the part of the expansion bolt exposed outside can not be corroded by water, so that the fixing effect of the expansion bolt is more durable.

Description

Expansion bolt special for nuclear power

Technical Field

The utility model relates to the technical field of parts for nuclear power, in particular to an expansion bolt special for nuclear power.

Background

The existing products need to use screws in the production process, particularly in the field of nuclear power water gates, the screws need to be filled into a part of the water gate to fix the size and the structure, and the expansion bolt is a special threaded connecting piece for fixing a pipeline support/hanger/bracket or equipment on a wall, a floor and a column.

Because the expansion bolt is inevitably contacted with a large amount of water in the using process, if a certain anti-corrosion measure is not available, the fixing effect is greatly influenced, and if the fixing effect is not good, more water gate leakage can be caused, a large amount of water resources are wasted, and even safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, such as: the expansion bolt in the prior art is often weak in rust prevention and corrosion resistance, and the expansion bolt special for nuclear power is provided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a special expansion bolts of nuclear power, includes expansion bolts and bolt cover, expansion bolts divide into screw rod, nut, lug and inflation piece, the screw thread section has been seted up to the screw rod lateral wall, screw thread section and nut threaded connection, screw rod one end fixedly connected with spiral shell head, spiral shell head one end and lug fixed connection are kept away from to the screw rod, the diameter of lug is greater than the diameter of screw rod, the inflation piece cover is established on the screw rod, screw rod lateral wall fixedly connected with limiting plate, the limiting plate lateral wall offsets with the inflation piece lateral wall, the jack has been seted up in the spiral shell head, the size of bolt cover is the same with the size of spiral shell head, installed the restriction mechanism in the bolt cover, restriction mechanism offsets with the jack inner wall.

Preferably, the limiting mechanism comprises an inserting rod, a limiting plate and a pulling block, a movable cavity is formed in the bolt sleeve, the inserting rod penetrates through the side walls of the two sides of the movable cavity and abuts against the inner wall of the inserting hole, the side wall of the inserting rod is fixedly connected with the limiting plate, and one end, far away from the inserting hole, of the inserting rod extends out of the bolt sleeve and is fixedly connected with the pulling block.

Preferably, the bolt sleeve side wall is provided with a through hole, the inserted bar passes through the through hole and offsets with the jack inner wall, and the size of the limiting plate is larger than that of the through hole.

Preferably, a spring is fixedly connected to a side wall of the limiting plate far away from the through hole, one end of the spring far away from the limiting plate is fixedly connected with a side wall of the movable cavity, and the inserted rod is located inside the spring.

Preferably, the expansion piece is close to lug one end and has seted up a plurality of notches, the expansion piece is close to lug one end lateral wall and is equipped with a plurality of anti-skidding lines, and is a plurality of anti-skidding line is parallel arrangement, and is a plurality of the direction of anti-skidding line all is perpendicular to the notch.

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

1. the arrangement of the screw head can facilitate a worker to hammer the expansion bolt into a wall surface, and the worker does not need to worry about damaging the threaded section when hammering, and after the expansion bolt reaches a specified position, the nut can be rotated through the wrench, so that the threaded section can drive the lug to move, and the expansion piece can extrude the wall body to achieve a fixing effect;

2. after the expansion bolt is fixed, only the pulling block needs to be pulled, and the bolt sleeve is sleeved into the bolt head, so that the exposed part of the expansion bolt can be protected.

Drawings

FIG. 1 is a schematic structural view of an expansion bolt for nuclear power provided by the utility model without a matching bolt sleeve;

FIG. 2 is a schematic structural view of an expansion bolt matched with an upper bolt sleeve for nuclear power, which is provided by the utility model;

fig. 3 is a schematic view of a connection structure of the screw head and the bolt sleeve.

In the figure: 1 bolt sleeve, 2 screw rods, 3 nuts, 4 convex blocks, 5 expansion pieces, 6 thread sections, 7 screw heads, 8 limiting plates, 9 insertion holes, 10 insertion rods, 11 limiting blocks, 12 pulling blocks, 13 through holes, 14 springs, 15 notches and 16 anti-skid threads.

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.

Referring to fig. 1-3, the expansion bolt special for nuclear power comprises an expansion bolt and a bolt sleeve 1, the expansion bolt is divided into a screw rod 2, a nut 3, a convex block 4 and an expansion piece 5, a thread section 6 is arranged on the side wall of the screw rod 2, the thread section 6 is in threaded connection with the nut 3, a screw head 7 is fixedly connected to one end of the screw rod 2, far away from the screw head 7, is fixedly connected with the convex block 4, and the diameter of the convex block 4 is larger than that of the screw rod 2;

the expansion piece 5 is sleeved on the screw rod 2, the side wall of the screw rod 2 is fixedly connected with a limiting plate 8, the side wall of the limiting plate 8 is abutted against the side wall of the expansion piece 5, one end, close to the lug 4, of the expansion piece 5 is provided with a plurality of notches 15, one end, close to the lug 4, of the expansion piece 5 is provided with a plurality of anti-skid grains 16, the plurality of anti-skid grains 16 are arranged in parallel, and the directions of the plurality of anti-skid grains 16 are all perpendicular to the notches 15;

the plug 7 is internally provided with an insertion hole 9, the size of the bolt sleeve 1 is the same as that of the plug 7, a limiting mechanism is arranged in the bolt sleeve 1 and abuts against the inner wall of the insertion hole 9, the limiting mechanism comprises an insertion rod 10, a limiting block 11 and a pulling block 12, a movable cavity is arranged in the bolt sleeve 1, the insertion rod 10 penetrates through the side walls of the two sides of the movable cavity and abuts against the inner wall of the insertion hole 9, and the side wall of the insertion rod 10 is fixedly connected with the limiting block 11;

the one end of inserted bar 10 is kept away from jack 9 and is stretched out the bolt cover 1 and outside and with draw piece 12 fixed connection, and through-hole 13 has been seted up to bolt cover 1 lateral wall, and inserted bar 10 passes through-hole 13 and offsets with jack 9 inner wall, and the size of restriction piece 11 is greater than the size of through-hole 13, and restriction piece 11 keeps away from through-hole 13 one side lateral wall fixed connection with spring 14, and spring 14 keeps away from restriction piece 11 one end and activity chamber lateral wall fixed connection, and inserted bar 10 is located inside spring 14.

According to the utility model, when the expansion bolt is required to be used, a worker can hammer the expansion bolt into the wall body by hammering the screw head 7, when the expansion bolt reaches a specified position, the worker can stop hammering, the nut 3 is rotated by using a wrench, so that the threaded section 6 moves, the threaded section 6 moves to drive the screw rod 2 and the lug 4 to move, the anti-skid threads 16 are arranged on the side wall of the expansion piece 5, the position of the expansion piece 5 is relatively fixed, the expansion piece 5 can be expanded by the moving lug 4, and the limiting effect of the expansion piece 5 and the surrounding wall body is enhanced;

after the expansion bolt is fixed, the pulling block 12 is pulled, the bolt sleeve 1 is sleeved on the screw head 7, the pulling block 12 is loosened, the inserting rod 10 moves to the inside of the inserting hole 9 under the combined action of the limiting block 11 and the spring 14, the bolt sleeve 1 is fixed on the screw head 7, the part of the expansion bolt exposed outside is prevented from being corroded by water, and the nuclear power is safer to use.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The expansion bolt special for nuclear power comprises an expansion bolt and a bolt sleeve (1), and is characterized in that the expansion bolt is divided into a screw rod (2), a nut (3), a convex block (4) and an expansion piece (5), the side wall of the screw rod (2) is provided with a thread section (6), the thread section (6) is in threaded connection with the nut (3), one end of the screw rod (2) is fixedly connected with a screw head (7), one end of the screw rod (2), far away from the screw head (7), is fixedly connected with the convex block (4), the diameter of the convex block (4) is larger than that of the screw rod (2), the expansion piece (5) is sleeved on the screw rod (2), the side wall of the screw rod (2) is fixedly connected with a limiting plate (8), the side wall of the limiting plate (8) is abutted against the side wall of the expansion piece (5), an insertion hole (9) is formed in the screw head (7), and the size of the bolt sleeve (1) is the same as that of the screw head (7), and a limiting mechanism is arranged in the bolt sleeve (1) and is abutted against the inner wall of the jack (9).

2. The expansion bolt special for nuclear power as claimed in claim 1, wherein the limiting mechanism comprises an insert rod (10), a limiting block (11) and a pulling block (12), a movable cavity is formed in the bolt sleeve (1), the insert rod (10) penetrates through side walls on two sides of the movable cavity and abuts against the inner wall of the insertion hole (9), the side wall of the insert rod (10) is fixedly connected with the limiting block (11), and one end, far away from the insertion hole (9), of the insert rod (10) extends out of the bolt sleeve (1) and is fixedly connected with the pulling block (12).

3. The expansion bolt special for nuclear power as claimed in claim 2, wherein the side wall of the bolt sleeve (1) is provided with a through hole (13), the inserted rod (10) passes through the through hole (13) and abuts against the inner wall of the insertion hole (9), and the size of the limiting block (11) is larger than that of the through hole (13).

4. The expansion bolt special for nuclear power as claimed in claim 2, wherein a spring (14) is fixedly connected to a side wall of the limiting block (11) far away from the through hole (13), one end of the spring (14) far away from the limiting block (11) is fixedly connected with a side wall of the movable cavity, and the insert rod (10) is located inside the spring (14).

5. The expansion bolt special for nuclear power as claimed in claim 1, wherein a plurality of notches (15) are formed in one end, close to the protruding block (4), of the expansion piece (5), a plurality of anti-slip threads (16) are formed in the side wall, close to the protruding block (4), of the expansion piece (5), the plurality of anti-slip threads (16) are arranged in parallel, and the direction of each anti-slip thread (16) is perpendicular to the notch (15).