CN2254493Y

CN2254493Y - Double-thread auxiliary locking bolt

Info

Publication number: CN2254493Y
Application number: CN 96227913
Authority: CN
Inventors: 王小敏; 芮丽娟
Original assignee: Individual
Current assignee: Rui Lijuan; Wang Xiaomin
Priority date: 1996-05-06
Filing date: 1996-05-06
Publication date: 1997-05-21
Anticipated expiration: 2006-05-06

Abstract

The utility model relates to a double-thread anti-loosening screw bolt, belonging to a fastening device or a fixing device. The utility model is mainly used for preventing the screw bolt and the screw nut from falling off. The utility model is characterized in that the outer side of the anti-loosening screw nut screwed on the screw bolt is in an inner to outer mode orderly sheathed with an anti-loosening circle piece whose inner ring shape and outer ring shape are both identical with the outer ring shape of the anti-loosening screw nut, and a screw buckle whose inner hole shape is identical with the outer ring of the anti-loosening ring piece is screwed in the inner screw thread hole of a connecting body and is with an outer screw thread whose screw thread rotation direction is opposite to the screw thread rotation direction of the anti-loosening screw nut. The utility model has the advantages of simple structure, convenient installation and removal, reliable anti-loosening, high safety, etc.

Description

Two screw threads are paid chek bolt

The utility model discloses a kind of pair of screw thread and pay chek bolt, belong to the device technology field that fastening or fixed component or machine parts are used, be mainly used in alternate load or mechanical vibration particularly occasions such as high-altitude, poisonous, danger prevent that bolt and nut from getting loose, guarantee job safety.

Common screw thread is paid locking measure in prior art three kinds: the one, and manage to make screw thread to have the pressure that does not become to produce friction torque in paying with coupling, it is locking to prevent that bolt and nut from rubbing in relative rotation, only reliability is preferably arranged in quiet connection, and be not suitable for alternate load or the occasion of mechanical vibration is arranged; The 2nd, utilize the exchange metallic member to retrain mechanical locking that screw thread pays, as cotter pin with slotted nut, add locked spacer, the wire etc. of connecting, but have in the middle of them when nut is tightened, thereby its nut groove is not necessarily just in time aimed at the bolt pin-and-hole and is lost locking effect and weakened its due intensity on the contrary, what have should not be to relatively rotate under the condition to use in perpendicular to bolt axis plane less or coupled of pretightening force, and a plurality of screw threads that only are used for that also have are paid and are not suitable for single screw thread and pay; The 3rd, the riveting that the destruction screw thread is paid relation generally only is used for non-detachable disposal screw thread and pays towards bonding locking.

It is a kind of simple in structure that the purpose of this utility model is to provide, and locking reliable, mounting or dismounting are convenient, and two screw threads applied widely are paid chek bolt.

The reason that gets loose according to tribology principle and nut, at the subject matter that exists in the prior art, basic design of the present utility model is: after tightening by lock nut outside, in the opposite interior threaded hole of connected body corresponding position nut rotation direction that process in advance and above-mentioned, be screwed into again outside thread that a tyre matches with this tapped hole and endoporus and above-mentioned by lock nut outside the corresponding spiral shell of loop-shaped buckle, and then between this spiral shell button and above-mentioned nut, put into its loop-shaped consistent with the nut outer ring and outside loop-shaped and the corresponding to anti-loose annular sheet of spiral shell button endoporus, and regulate this spiral shell button and all match inside and outside making anti-loose annular sheet, when nut has release force to do the time spent spiral shell button is tightened like this, and twist nut tighter by anti-loose annular sheet, may not get loose again.

Described in the utility model pair of screw thread paid chek bolt, by being constituted by lock nut [2] and bolt [4], it is characterized in that this pair screw thread pays chek bolt, also be provided with in addition and the opposite outside thread of nut [2] thread rotary orientation in above-mentioned outside by lock nut [2], in for the polygonal holes identical and be spun on that connected body [5] is gone up the interior spiral shell button [1] of the interior threaded hole that matches with it and shape matches with the above-mentioned interior loop-shaped by the outer loop-shaped of lock nut [2] and spiral shell button [1] respectively inside and outside it anti-loose annular sheet [3] with nut [2] angle number, above-mentioned by lock nut [2], socket successively from inside to outside after anti-loose annular sheet [3] and spiral shell button [1] install.

When nut [2] below connected body [5] and/or during a certain side, can establish a jump ring groove on above-mentioned spiral shell button [1] inner hole wall and in this groove, reinstall jump ring [6] in order to the above-mentioned anti-loose annular sheet [3] of retaining.

Again when connected body [5] should not or be difficult for being gone out to install the interior threaded hole of above-mentioned spiral shell button [1] by preprocessing, can directly a welding and/or a bonding internal thread ring [7] identical with its thread rotary orientation replace it in the corresponding position of connected body [6].

Outstanding advantage of the present utility model is: simple in structure, installing/dismounting uses all convenient, can overcome existing screw thread and pay locking measure existing all shortcomings, locking reliable, applied widely, be particularly useful for the high-altitude, poisonous, danger etc. can not often carry out the occasion of hand inspection.

Accompanying drawing 1 is that one of the utility model most preferred embodiment is installed the whole vertical profile front elevational schematic in back, Fig. 2 is Fig. 1 plan view, Fig. 3 pays chek bolt vertical profile front elevational schematic for the vertical profile front elevational schematic of one of the change embodiment jump ring of promptly packing into, Fig. 4 for change embodiment's the two two screw threads that promptly welded the internal thread ring on connected body.

1 spiral shell button among the figure, 2 by lock nut, 3 anti-loose annular sheets, 4 bolts, 5 connected bodies, 6 jump rings, 7 internal thread rings.

Further describe structure characteristic of the present utility model as follows with most preferred embodiment in conjunction with the accompanying drawings: shown in accompanying drawing 1～2, be screwed into the on the bolt 4 by hexagonal locknut 2 outsides, again one of suit in it band hex hole opposite with nut 2 rotation directions in addition and be screwed in advance on connected body 5 spiral shell in the interior threaded hole with matching of processing and buckle 1, be hexagonal anti-loose annular sheet 3 and regulate spiral shell button 1 till the Hexagon of the Hexagon of preventing loose annular sheet 3 and spiral shell button 1 endoporus matches fully at its Internal and external cycle of packing between above-mentioned nut 2 and the spiral shell button 1 again.

Change as present embodiment:

1, when by lock nut 2 below connected body 5 or a certain side, be bolt head down or substantially horizontal when using, as shown in Figure 3, can offer the jump ring groove on spiral shell button 1 inner hole wall and in this groove, reinstalling jump ring 6 between nut 2 and spiral shell button 1 in case anti-loose annular sheet 3 withdraws from;

2, do not allow or volume is excessive etc. can make an internal thread ring that matches with spiral shell button 1 outside thread 7 earlier when should not or be difficult in advance processed interior threaded hole and also directly weld or be bonded on the connected body 5 when connected body 5 intensity, as shown in Figure 4;

3, the shape of the shape of the angle number of nut 2 and ring plate 3 and spiral shell button 1 endoporus all can be done the conformity conversion with the angle number of known nut commonly used;

4, all can be encased inside pad or spring washer between lock nut 2 and the connected body 5.

Claims

1, a kind of pair of screw thread paid chek bolt, by being constituted by lock nut [2] and bolt [4], it is characterized in that this pair screw thread pays chek bolt, also be provided with in addition and the opposite outside thread of nut [2] thread rotary orientation in above-mentioned outside by lock nut [2], in for the polygonal holes identical and be spun on that connected body [5] is gone up the interior spiral shell button [1] of the interior threaded hole that matches with it and shape matches with the above-mentioned interior loop-shaped by the outer loop-shaped of lock nut [2] and spiral shell button [1] respectively inside and outside it anti-loose annular sheet [3] with the angle number of nut [2], above-mentioned by lock nut [2], socket successively from inside to outside after anti-loose annular sheet [3] and spiral shell button [1] install.

2, according to claim 1 pair of screw thread paid chek bolt, it is characterized in that can establishing a jump ring groove on above-mentioned spiral shell button [1] inner hole wall and packing in this groove in order to the jump ring [6] of the above-mentioned anti-loose annular sheet [3] of retaining.

3, according to claim 1 pair of screw thread paid chek bolt, it is characterized in that the interior threaded hole on the above-mentioned connected body [5] can and/or be bonded in by conjuncted [5] upward identical with its thread rotary orientation internal thread ring [7] replacement by direct welding.