CN112431839A

CN112431839A - Anti-drop bolt for narrow area

Info

Publication number: CN112431839A
Application number: CN202011171140.7A
Authority: CN
Inventors: 焦志民; 汤平根; 丁勤效; 徐晨鹏; 丁冠文; 田铁军; 曹军
Original assignee: Jiangyin Jiangyang Standard Fastener Manufacturing Co ltd
Current assignee: Jiangsu Jiangyang Fasteners Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-03-02
Anticipated expiration: 2040-10-28
Also published as: CN112431839B

Abstract

The invention discloses an anti-falling bolt for a narrow area, and relates to the technical field of fasteners. The screw comprises a screw body and a nut portion, the nut is arranged on the screw body and in threaded connection with the screw body, channels are formed in opposite sides of the peripheral side face of the screw body, one end of each channel penetrates through the screw body, the clamp is fixed on the screw body, and one side of the clamp is attached to one end face, away from the nut portion, of the nut. According to the bolt, the clamp is arranged on the screw part, the rubber pad is arranged between the clamp and the screw part, the position of the nut on the screw part can be limited, the problem that the nut is loosened and falls off can be avoided, the reinforcing member is inserted, the position between the clamp and the nut part can be reinforced, the position of the nut is further limited, the problems that the nut is easy to fall off and the clamp is easy to shift due to high-frequency large vibration can be avoided, and the problem that the existing bolt is insufficient in anti-falling capacity is solved.

Description

Anti-drop bolt for narrow area

Technical Field

The invention belongs to the technical field of fasteners, and particularly relates to an anti-falling bolt for a narrow area.

Background

To great and the more frequent bolt that uses in position, the condition that the nut slowly rotated can appear in long-time use to can appear the nut and easily become flexible and the problem that easily drops, thereby influence the fastening nature and the security of fixed position, current anti-drop measure can use the mode of wedge gasket or the mode of welded nut or set up the mode that the hole alternates the steel wire on screw rod portion and lockingly, nevertheless such anti-drop mode still possesses following shortcoming:

1. the problem of insufficient anti-loosening effect still occurs by using the wedge-shaped gasket, and the anti-loosening effect is poor.

2. The problem that efficiency of construction reduces can appear in the mode of using welded nut, and to narrow region's use, welding equipment's soldered connection is difficult for stretching into, is difficult for welding the junction of nut and screw rod portion, and the department of welding possesses the thread groove simultaneously and can appear the not enough and not enough problem of corrosion protection ability of weld fastening nature.

3. The mode that the hole alternates the steel wire is seted up to the use on the screw rod possesses two kinds of methods, the first kind is to set up the hole on the screw rod portion in advance, however the position of hole is fixed, the problem that suitability is not enough can appear, can appear the problem of difficult interlude steel wire under the condition that the nut covers the hole, and when the distance is great between hole and the nut, the not hard up condition still can appear, only possess anti-drop effect and do not possess locking effect, the second kind of method is at screw rod portion trompil at the scene after the bolt installation, the problem that efficiency of construction is not enough can appear this moment, and to narrow regional use, the stretching into of difficult tapping machine, thereby difficult tapping is carried out the trompil to the screw rod portion, and the problem that the nut shifted can appear in the vibration that produces during the scene trompil, influence the.

Disclosure of Invention

The invention aims to provide an anti-falling bolt for a narrow area, which can limit the position of a nut on a screw rod part by arranging a clamp on the screw rod part and arranging a rubber pad between the clamp and the screw rod part, can avoid the problem that the nut is loosened and falls off, can reinforce the position between the clamp and the nut part by inserting a reinforcing member, further limits the position of the nut, can avoid the problems that the nut is easy to fall off and the clamp is easy to shift due to high-frequency large vibration, and solves the problem that the existing bolt is insufficient in anti-falling capacity.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an anti-falling bolt for a narrow area, which comprises a bolt, a nut, a clamp and a reinforcing piece, wherein the bolt comprises a screw rod part and a nut part, and the nut is arranged on the screw rod part and is in threaded connection with the screw rod part;

channels are formed in the opposite sides of the peripheral side face of the screw rod part, and one end of each channel penetrates through the screw cap part;

the clamp is fixed on the screw rod part, one side of the clamp is attached to one end face, away from the screw cap part, of the nut, a rubber pad is arranged between the inner side of the clamp and the outer side of the screw rod part, straight rods are fixed to the upper portion and the lower portion of the clamp, and a backing ring is fixed to one end of each straight rod;

the reinforcement includes the fixed plate, be fixed with a set of steel wire on the fixed plate, the fixed plate sets up and keeps away from screw rod portion one end in nut portion, and is a set of the steel wire runs through nut and clamp through two channels respectively and encircles the setting on the straight-bar, steel wire between nut and the nut portion be located the channel and with channel clearance fit.

Further, the clamp includes the hoop body and the hoop body down, the hoop body is semi-circular ring structure with the hoop body down on, the hoop body all is equipped with the journal stirrup with hoop body both ends down on, be equipped with the screw between the journal stirrup of hoop body and hoop body both sides down.

Furthermore, a set of through holes is formed in the fixing plate, one end of each steel wire penetrates through the through holes, a metal sleeve is arranged on the steel wire on the rear side of the fixing plate, and the metal sleeves are fixed on the steel wires through extrusion.

Furthermore, threaded sleeves are arranged on the outer sides of the support lugs on the two sides of the upper hoop body and the lower hoop body, and the screws are located in the threaded sleeves and are in threaded connection with the threaded sleeves.

Furthermore, a gap is formed in one side, away from the nut, of the upper hoop body and the lower hoop body, and part of the steel wire is located in the gap and in clearance fit with the gap.

Furthermore, the structural characteristics of the upper hoop body are the same as those of the lower hoop body, one end of the rubber pad on the upper hoop body is flush with the inner side of the notch, and the other end of the rubber ring on the upper hoop body is flush with one end, far away from the notch, of the upper hoop body.

Further, the outer side of the screw rod part is provided with a thread groove, and the bottom of the rubber pad is embedded into the thread groove.

Furthermore, the screw rod portion is equipped with two gaskets in the position between nut and the nut portion, the gasket is two wedge circle structures of mutually supporting.

Furthermore, the outer surfaces of the screw, the nut, the clamp and the reinforcing piece are all sprayed with anticorrosive paint.

The invention has the following beneficial effects:

according to the bolt, the clamp is arranged on the screw part, the rubber pad is arranged between the clamp and the screw part, the position of the nut on the screw part can be limited, the problem that the nut is loosened and falls off can be avoided, the reinforcing member is inserted, the position between the clamp and the nut part can be reinforced, the position of the nut is further limited, the problems that the nut is easy to fall off and the clamp is easy to move due to high-frequency large vibration can be avoided, the bolt is convenient to install, and meanwhile, the anti-falling capacity of the bolt is greatly improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a drop bolt for a narrow area according to the present invention;

FIG. 2 is a schematic view of the structure of the clamp;

FIG. 3 is a schematic view of a reinforcement structure;

in the drawings, the components represented by the respective reference numerals are listed below:

1-screw, 2-nut, 3-clip, 4-stiffener, 5-rubber pad, 6-gasket, 101-screw part, 102-screw part, 103-channel, 301-straight rod, 302-backing ring, 303-upper hoop body, 304-lower hoop body, 305-lug, 306-screw, 307-thread sleeve, 308-notch, 401-fixing plate, 402-steel wire, 403-metal sleeve.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention is an anti-drop bolt for narrow area, including a bolt 1, a nut 2, a clamp 3 and a reinforcement 4, wherein the bolt 1 includes a screw portion 101 and a nut portion 102, and the nut 2 is disposed on the screw portion 101 and is in threaded connection with the screw portion 101;

the opposite sides of the peripheral side of the screw part 101 are both provided with channels 103, and one end of each channel 103 penetrates through the screw cap part 102;

the clamp 3 is fixed on the screw rod part 101, one side of the clamp 3 is attached to one end face, far away from the screw cap part 102, of the nut 2, a rubber pad 5 is arranged between the inner side of the clamp 3 and the outer side of the screw rod part 101, the upper part and the lower part of the clamp 3 are both fixed with straight rods 301, and one end of each straight rod 301 is fixed with a backing ring 302;

the reinforcing member 4 comprises a fixing plate 401, a set of steel wires 402 is fixed on the fixing plate 401, the fixing plate 401 is arranged at one end, away from the screw portion 101, of the nut portion 102, the set of steel wires 402 respectively penetrate through the nut 2 and the clamp 3 through the two channels 103 and are arranged on the straight rod 301 in a surrounding mode, and the steel wires 402 between the nut 2 and the nut portion 102 are located in the channels 103 and are in clearance fit with the channels 103.

As shown in fig. 1-2, the band 3 includes an upper band 303 and a lower band 304, both the upper band 303 and the lower band 304 are of a semicircular ring structure, two ends of the upper band 303 and the lower band 304 are both provided with a support lug 305, and a screw 306 is arranged between the support lugs 305 on two sides of the upper band 303 and the lower band 304.

As shown in fig. 1 and 3, a set of through holes is formed in the fixing plate 401, one end of the steel wire 402 penetrates through the through holes, a metal sleeve 403 is disposed on the steel wire 402 behind the fixing plate 401, and the metal sleeve 403 is fixed on the steel wire 402 by extrusion.

As shown in FIG. 2, a threaded sleeve 307 is arranged outside the support lug 305 on both sides of the upper hoop body 303 and the lower hoop body 304, and the screw 1 is positioned in the threaded sleeve 307 and is in threaded connection with the threaded sleeve 307.

As shown in fig. 1-2, a notch 308 is formed on one side of the upper hoop body 303 and the lower hoop body 304 away from the nut 2, and a part of the steel wire 402 is located in the notch 308 and is in clearance fit with the notch 308.

As shown in fig. 2, the structural features of the upper hoop 303 are the same as those of the lower hoop 304, one end of the rubber pad 5 on the upper hoop 303 is flush with the inner side of the gap 308, and the other end of the rubber ring on the upper hoop 303 is flush with the end of the upper hoop 303 away from the gap 308.

Wherein, the screw rod portion 101 outside is equipped with the screw groove, and rubber pad 5 bottom embedding is in the screw groove.

As shown in fig. 1, two gaskets 6 are disposed at a position of the screw portion 101 between the nut 2 and the nut portion 102, and the gaskets 6 are two wedge-shaped ring structures that are engaged with each other.

Wherein, the outer surfaces of the screw 1, the nut 2, the clamp 3 and the reinforcing member 4 are all sprayed with anticorrosive paint.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a falling-off prevention bolt for narrow area, includes screw (1) and nut (2), screw (1) includes screw portion (101) and nut portion (102), nut (2) set up on screw portion (101) and with screw portion (101) threaded connection, its characterized in that: the clamp is characterized by also comprising a clamp hoop (3) and a reinforcing piece (4);

channels (103) are formed in the opposite sides of the peripheral side face of the screw rod part (101), and one end of each channel (103) penetrates through the screw cap part (102);

the clamp (3) is fixed on the screw rod part (101), one side of the clamp (3) is attached to one end face, away from the screw rod part (102), of the nut (2), a rubber pad (5) is arranged between the inner side of the clamp (3) and the outer side of the screw rod part (101), the upper part and the lower part of the clamp (3) are both fixed with a straight rod (301), and one end of the straight rod (301) is fixed with a pad ring (302);

the reinforcement (4) are including fixed plate (401), be fixed with a set of steel wire (402) on fixed plate (401), fixed plate (401) set up and keep away from screw rod portion (101) one end in screw cap portion (102), and a set of steel wire (402) run through nut (2) and clamp (3) and encircle the setting on straight-bar (301) through two channels (103) respectively, steel wire (402) between nut (2) and screw cap portion (102) are located channel (103) and with channel (103) clearance fit.

2. A drop-proof bolt for narrow area according to claim 1, wherein the clamp (3) comprises an upper clamp body (303) and a lower clamp body (304), the upper clamp body (303) and the lower clamp body (304) are both in a semicircular ring structure, two ends of the upper clamp body (303) and the lower clamp body (304) are respectively provided with a support lug (305), and a screw (306) is arranged between the support lugs (305) at two sides of the upper clamp body (303) and the lower clamp body (304).

3. The anti-drop bolt for the narrow area according to claim 1, wherein a set of through holes are opened on the fixing plate (401), one end of the steel wire (402) penetrates through the through holes, a metal sleeve (403) is arranged on the steel wire (402) at the rear side of the fixing plate (401), and the metal sleeve (403) is fixed on the steel wire (402) by extrusion.

4. A drop-proof bolt for narrow area according to claim 2, wherein the outer side of the support lug (305) at both sides of the upper hoop body (303) and the lower hoop body (304) is provided with a threaded sleeve (307), and the bolt (1) is positioned in the threaded sleeve (307) and is in threaded connection with the threaded sleeve (307).

5. The anti-drop bolt for the narrow area according to claim 2, wherein the upper hoop body (303) and the lower hoop body (304) are provided with a notch (308) at a side away from the nut (2), and part of the steel wire (402) is positioned in the notch (308) and is in clearance fit with the notch (308).

6. A drop-preventing bolt for narrow area according to claim 5, wherein the structural characteristics of the upper hoop body (303) are the same as those of the lower hoop body (304), one end of the upper rubber pad (5) of the upper hoop body (303) is flush with the inner side of the gap (308), and the other end of the upper rubber ring of the upper hoop body (303) is flush with the end of the upper hoop body (303) far away from the gap (308).

7. A drop bolt for narrow area according to claim 1, wherein the screw part (101) is provided with a screw groove at the outside, and the bottom of the rubber pad (5) is embedded in the screw groove.

8. A drop bolt for narrow area according to claim 1, wherein the position of the shank portion (101) between the nut (2) and the nut portion (102) is provided with two washers (6), and the washers (6) are two wedge ring structures which are mutually matched.

9. A drop bolt for narrow area according to claim 1, wherein the outer surfaces of the bolt (1), the nut (2), the clamp (3) and the reinforcement (4) are coated with anticorrosive paint.