CN109372872B

CN109372872B - Fastening bolt

Info

Publication number: CN109372872B
Application number: CN201811596056.2A
Authority: CN
Inventors: 张德池; 刘红祥; 卢华
Original assignee: Wenzhou Hongtu Auto Parts Co ltd
Current assignee: Wenzhou Hongtu Auto Parts Co ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-09-08
Anticipated expiration: 2038-12-26
Also published as: CN109372872A

Abstract

The invention relates to the technical field of fastening bolts, in particular to a fastening bolt, which comprises a screw rod and a bolt head, wherein the bolt head is positioned at the top of one end of the screw rod, the top of the bolt head is provided with a limiting groove, a protective cover is fixed inside the limiting groove, the protective cover is provided with a rotating groove inside the protective cover and positioned at the top of the bolt head, the rotating groove penetrates through the screw rod and the bolt head, a screw connecting column is fixed inside the rotating groove, the top of the screw connecting column is fixed with a rotating seat, the top of the rotating seat is provided with a fixed hole, the bottom of one end of the screw connecting column, which is far away from the rotating groove, is fixed with a movable screw seat, one side of the movable screw seat, which is connected with the screw rod, is provided with a stop groove, a stop block is clamped inside the stop groove, is of an arc-shaped structure, one side of the stop block, which is positioned inside the, the one-way separation of the fastening bolt is realized, the application range is wide, and the operation is simple.

Description

Fastening bolt

Technical Field

The invention relates to the technical field of fastening bolts, in particular to a fastening bolt.

Background

The fastening bolt is one of mechanical parts, a cylindrical threaded fastener matched with a nut, a fastener composed of a head part and a screw (a cylinder with an external thread) is matched with the nut and used for fastening and connecting two parts with through holes, the connection form is called bolt connection, the nut can be screwed off the bolt, and the two parts can be separated, so the bolt connection belongs to detachable connection, the advanced bolt is the basis of high-end mechanical manufacturing and can be called as 'four-two dial jack', the bolt production value on the surface only accounts for a few percent of the mechanical industry, in essence, the bolt brings much higher added value to key components and equipment, and after two continuous digits of the bolt increase in China for many years, the bolt industry has negative increase in 2012, the same ratio decreases by about 1.5 percent, the main reason is that the market demand is insufficient, especially after the bolt suffers from international reverse roll-over, the sales of the export is in a descending situation, the market competition of the bolts is intense, and the brand management is developed.

In the last 10 years, China has attracted attention to the development speed of the world, so that developed countries are surprised, and the developed countries are also allowed to find a novel large market, and the fish of multinational companies penetrates. When domestic bolt enterprises suddenly feel that the bolts exist in the market so difficultly, powerful competitors bloom all the time, in the current bolt market of China, some small and medium-sized bolt enterprises manufacture a large number of common standard parts, do not really bring core competitiveness to the enterprises, but are limited by the change of conditions such as raw materials, labor cost and the like, the production technology level of the bolts of China is basically close to the world advanced level, mainly comprises common standard parts, low-grade and medium-grade special and special-shaped bolts, and is large in quantity and low in price, and the low-strength bolts of China range from 4.8 to 6.8 or from 8.8 to 12.9. Summarizing that low-grade products fill the leading market, a small part of high-grade, high-precision and high-strength bolts still need to be imported, the difference between the imported unit price and the bid price of the products is about 6 times or more, therefore, the bolt industry in China is still a developing industry, is large but not strong, is fat but not strong, has larger difference with the United states, Japan, Korea and Taiwan area of China, lacks technical service to solve the mechanical fastening scheme, realizes the digitalization of products, design, manufacture and management, and realizes the greening of products and manufacturing processes.

The existing bolt is single in function, when the bolt is fixed, the bolt can be unscrewed from the bolt head after the fixing nut at the screw rod end is disassembled, but in practical situations, the bolt is difficult to disassemble under many conditions, and inconvenience is brought to operation of workers.

Disclosure of Invention

The invention aims to solve the defect that the dismounting mode of a fastening bolt is single in the prior art, and provides the fastening bolt.

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

a fastening bolt is designed, and comprises a screw rod and a bolt head, wherein the bolt head is positioned at the top of one end of the screw rod, a limiting groove is formed in the top of the bolt head, the limiting groove is of an annular structure, a drain hole is formed in one side of the limiting groove, rainwater and the like entering the limiting groove can be discharged, the bolt is prevented from being corroded, a protective cover is fixed inside the limiting groove, threads are carved on the inner side of the protective cover and meshed with the limiting groove, the structure inside the protective cover can be protected from being corroded by the rainwater and the like, a rotating groove is formed inside the protective cover and positioned at the top of the bolt head, penetrates through the screw rod and the bolt head, a bolt connecting column is fixed inside the rotating groove, a rotating seat is fixed at the top of the bolt connecting column, a fixing hole is formed in the top of the rotating seat, and the rotation of the bolt connecting column can be controlled by rotating a, the stop groove is internally provided with threads and meshed with the screw connecting column, the bottom of one end of the screw connecting column far away from the rotating groove is fixed with a movable screw seat, a stop groove is arranged on one side of the joint of the movable screw seat and the screw rod, a stop block is clamped in the stop groove, the length of the stop block is smaller than that of the stop groove, so that the stop block can move conveniently, the stop block is of an arc structure and can rotate conveniently along with the rotation of the screw post, and one side of the stop block, which is positioned in the screw rod, is carved with threads, a first anti-drop nut and a second anti-drop nut are clamped at the outer side of the screw rod and positioned at the two ends of the stop block, the screw rod bottom with the department that meets of activity spiral shell seat opens there is the joint groove, activity spiral shell seat with the department that meets of screw rod is fixed with the fixture block, the fixture block with the joint groove is ring structure and matches each other.

Preferably, the protection casing inboard with the spacing groove outside all is carved with the screw thread, and intermeshing, the protection casing outside can the skid resistant line.

Preferably, the primary side of the limiting groove is provided with a drain hole.

Preferably, the stop groove is internally threaded and engaged with the screw post.

Preferably, a rotating seat is fixed at the top of the threaded connection column, and a fixing hole is formed in the top of the rotating seat.

Preferably, the joint of the bottom of the screw rod and the movable screw seat is provided with a clamping groove, the joint of the movable screw seat and the screw rod is fixed with a clamping block, and the clamping block and the clamping groove are both of annular structures and are matched with each other.

Preferably, the rotating seat, the screw connection column and the movable screw seat are of an integrated structure.

The fastening bolt provided by the invention has the beneficial effects that: the rotation seat, the screw post and the activity screw seat through the integral type can pass through the rotation that the screw post was controlled to purpose-made instrument through the fixed orifices to separation screw rod and activity are taken a seat, and first anticreep nut and second anticreep nut can strengthen the fastening degree of device simultaneously, and can prevent fastening bolt's accident and drop.

Drawings

Fig. 1 is a schematic perspective view of a fastening bolt according to the present invention;

fig. 2 is a schematic view of the internal structure of a bolt head of a fastening bolt according to the present invention;

FIG. 3 is a schematic cross-sectional view of a fastening bolt according to the present invention;

fig. 4 is a schematic structural diagram of a stop block of a fastening bolt according to the present invention.

In the figure: the anti-dropping device comprises a screw rod 1, a limiting groove 2, a protective cover 3, a stop groove 4, a stop block 5, a movable screw seat 6, a first anti-dropping nut 7, a rotating groove 8, a rotating seat 9, a fixing hole 10, a screw connection column 11, a drain hole 12, a clamping groove 13, a clamping block 14, a bolt head 15 and a second anti-dropping nut 16.

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. 1-4, a fastening bolt comprises a screw rod 1 and a bolt head 15, wherein the bolt head 15 is positioned at the top of one end of the screw rod 1, the top of the bolt head 15 is provided with a limiting groove 2, the limiting groove 2 is of an annular structure, one side of the limiting groove 2 is provided with a drain hole which can drain rainwater and the like entering the limiting groove 2 to prevent the bolt from being corroded, a protective cover 3 is fixed inside the limiting groove 2, the inner side of the protective cover 3 is engraved with threads and is meshed with the limiting groove 2 to protect the structure inside the protective cover 3 from being corroded by rainwater and the like, a rotating groove 8 is arranged inside the protective cover 3 and positioned at the top of the bolt head 15, the rotating groove 8 penetrates through the screw rod 1 and the bolt head 15, a bolt connection column 11 is fixed inside the rotating groove 8, the top of the bolt connection column 11 is fixed with a rotating seat 9, the top of the rotating seat 9 is provided with a fixing hole, the stop groove 4 is internally provided with threads and meshed with the bolt connection column 11, and the bottom of one end of the bolt connection column 11 far away from the rotating groove 8 is fixed with a movable bolt seat 6.

One side of the joint of the movable screw seat 6 and the screw rod 1 is provided with a locking groove 4, the inside of the locking groove 4 is clamped with a locking block 5, the length of the locking block 5 is smaller than that of the locking groove 4, the locking block 5 is convenient to move, the locking block 5 is of an arc-shaped structure, threads are carved on one side of the locking block 5 located inside the screw rod 1, the locking block 5 can be convenient to rotate along with the rotation of the screw connecting column 11, the structural integrity of the device can be guaranteed, the first anti-falling nut 7 and the second anti-falling nut 16 are clamped on the outer side of the screw rod 1 and located at two ends of the locking block 5, the joint of the bottom of the screw rod 1 and the movable screw seat 6 is provided with a clamping groove, a clamping block 14 is fixed at the joint of the movable screw seat 6 and the screw rod 1, the clamping block 14 and the clamping groove 13 are of annular structures and matched with each other, the rotary seat 9.

According to the invention, the rotation of the screw connecting column 11 can be controlled through the special tool through the fixing hole 10 by the integrated rotating seat 9, the screw connecting column 11 and the movable screw seat 6, so that the screw rod 1 and the movable screw seat 6 are separated, meanwhile, the fastening degree of the device can be enhanced by the first anti-falling nut 7 and the second anti-falling nut 16, the accidental falling of the fastening bolt can be prevented, different fixing positions can be adjusted by the first anti-falling nut 7 and the second anti-falling nut 16, the separation and the opening of the fastening bolt can be completed, and the accidental separation and the falling of the fastening bolt can be prevented.

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 the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a fastening bolt, includes screw rod (1) and bolt head (15), bolt head (15) are located screw rod (1) one end top, its characterized in that, open at bolt head (15) top has spacing groove (2), spacing groove (2) inside is fixed with protection casing (3), protection casing (3) inboard with the spacing groove (2) outside all is carved with the screw thread, and intermeshing, the protection casing (3) outside is equipped with anti-skidding line, protection casing (3) inside just is located bolt head (15) top is opened has rotating groove (8), rotating groove (8) run through screw rod (1) and bolt head (15), rotating groove (8) inside is fixed with spiro union post (11), spiro union post (11) top is fixed with rotates seat (9), it has fixed orifices (10) to rotate seat (9) top, the bottom of one end, far away from the rotating groove (8), of the screw joint column (11) is fixed with a movable screw seat (6), a stop groove (4) is formed in one side of the joint of the movable screw seat (6) and the screw rod (1), a clamping groove (13) is formed in the joint of the bottom of the screw rod (1) and the movable screw seat (6), a clamping block (14) is fixed in the joint of the movable screw seat (6) and the screw rod (1), the clamping block (14) and the clamping groove (13) are of an annular structure and matched with each other, a stop block (5) is clamped in the inner part of the stop groove (4), the stop block (5) is of an arc-shaped structure, a thread is arranged on one side, located in the screw rod (1), of the outer side of the screw rod (1) and located at two ends of the stop block (5) are clamped with a first anti-off nut (7) and a second anti-off nut (16), the rotating seat (9), the screw connection column (11) and the movable screw seat (6) are of an integrated structure.

2. A fastening screw according to claim 1, characterised in that the primary side of the limiting groove (2) is provided with a drainage hole (12).