CN209146108U - Bolt locking structure - Google Patents

Abstract

The utility model discloses bolt locking structures, the countersunk head tapped through hole including upper workpiece is arranged in, and countersunk head tapped through hole includes upper special-shaped countersunk head portion and lower threaded portion；Profile gasket is equipped in upper abnormity countersunk head portion, profile gasket is matched with upper special-shaped countersunk head portion；Bolt is connect through profile gasket with upper special-shaped countersunk head portion and lower threaded portion；Bolt is welded and fixed with profile gasket.The utility model puts profile gasket by upper special-shaped countersunk head portion, the geomery of profile gasket and upper special-shaped countersunk head portion match, bolt passes through profile gasket and connects upper workpiece and lower workpiece, bolt is pressed on profile gasket next, and bolt and profile gasket are welded and fixed, the rotation of profile gasket is limited by upper special-shaped countersunk head portion, the possibility loosened is generated so as to avoid bolt, and do not limited by installation site, it is applied widely；And soldering is not carried out to workpiece itself, is not limited by workpiece material, the scope of application is wider.

Description

Bolt locking structure

technical field

The utility model relates to a connecting fastener, in particular to a bolt locking structure.

Background technique

Bolts and nuts are commonly used fastening parts, which are widely used in various mechanical and electrical equipment. After they are tightened on the workpiece, they need to be locked to prevent loosening during use. At present, the commonly used locking methods of bolts or nuts include washer locking and block locking. When the washer is used for locking, the tail of the washer needs to be fastened to the edge of the workpiece, and the washer is prevented from rotating by the limiting effect of the workpiece on the washer. . When using the block to lock, the block is close to the hexagonal side of the bolt or nut, and then the block is welded to the workpiece, and the rotation of the bolt and nut is limited by the block. However, these two locking methods have their own limitations. The washer locking can only lock the bolts and nuts installed on the edge of the workpiece, and its use is limited by the installation position; while the block locking requires welding on the workpiece, some workpieces are made of high-strength and high-carbon steel, and the welding performance Poor, its use is limited by the material of the workpiece; the scope of application of both is small.

Therefore, the existing locking methods of bolts or nuts have a problem that the scope of application is small.

Utility model content

The purpose of the present invention is to provide a bolt locking structure. The utility model has the advantages of wide application range.

The technical scheme of the utility model is as follows: the bolt locking structure includes a countersunk head threaded through hole arranged on the upper workpiece, the countersunk head threaded through hole includes an upper special-shaped countersunk head and a lower threaded part; the special-shaped washer is arranged in the upper special-shaped countersunk head, The special-shaped washer is matched with the upper special-shaped countersunk head; the bolt is connected with the upper special-shaped countersunk head and the lower threaded part through the special-shaped washer; the bolt and the special-shaped washer are welded and fixed.

In the aforementioned bolt locking structure, the special-shaped washer is a low carbon steel washer.

In the aforementioned bolt locking structure, the special-shaped washer is welded and fixed to one side of the bolt.

In the aforementioned bolt locking structure, the upper special-shaped countersunk head is an arc-shaped, oval or gourd-shaped countersunk head.

Compared with the prior art, the utility model places the special-shaped washer through the upper special-shaped countersunk head, the shape and size of the special-shaped washer are matched with the upper special-shaped countersunk head, and the bolt passes through the special-shaped washer to connect the upper workpiece and the lower workpiece. It is tightly pressed on the special-shaped washer, and the bolt and the special-shaped washer are welded and fixed, and the rotation of the special-shaped washer is restricted by the upper special-shaped countersunk head, thereby avoiding the possibility of loosening of the bolt, and is not limited by the installation position, and has a wide range of applications; And the workpiece itself is not welded, not limited by the material of the workpiece, and has a wider range of applications. The utility model has the advantages of wide application range.

Description of drawings

Fig. 1 is the structural representation of Embodiment 1 of the present utility model;

Fig. 2 is the structural representation of Embodiment 2 of the present utility model;

FIG. 3 is a schematic structural diagram of Embodiment 3 of the present invention.

The marks in the drawings are: 1-bolt, 2-special-shaped washer, 3-lower thread part, 4-upper profiled countersunk head, 5-upper workpiece, 6-lower workpiece.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present utility model.

Example 1. The bolt locking structure, as shown in Figure 1, includes a countersunk head threaded through hole arranged on the upper workpiece, and the countersunk head threaded through hole includes an upper special-shaped countersunk head 4 and a lower threaded part 3; the upper special-shaped countersunk head 4 is provided with Special-shaped washer 2, the special-shaped washer 2 is matched with the upper special-shaped countersunk head 4; the bolt 1 is connected with the upper special-shaped countersunk head 4 and the lower threaded part 3 through the special-shaped washer 2; the bolt 1 and the special-shaped washer 2 are welded and fixed. The bolt 1 is connected to the upper workpiece 5 and the lower workpiece 6 after passing through the special-shaped washer 2; the countersunk head thread through hole includes the upper special-shaped countersunk head 4 above the upper workpiece 5 and the lower threaded part 3 below the upper workpiece 5, and the upper special-shaped countersunk head 4 is used to fix the special-shaped washer 2, and the special-shaped washer 2 is matched with the shape and size of the upper special-shaped countersunk head 4, and the upper special-shaped countersunk head 4 is non-circular, thus limiting the rotation of the special-shaped washer 2 and avoiding the occurrence of the bolt 1. The possibility of loosening is not limited by the installation position, and the application range is wide; the special-shaped washer 2 is made of a material with good welding performance, which is convenient for welding the special-shaped washer 2 and the bolt head of the bolt 1, and avoids welding the workpiece itself. Restricted by the material of the workpiece, the scope of application is wider.

The special-shaped washer 2 is a low carbon steel washer. The special-shaped washer 2 is made of a material with good welding performance, which is convenient for welding the special-shaped washer 2 and the head of the bolt 1 .

The special-shaped washer 2 is welded and fixed to one side of the bolt 1 . Welding the special-shaped washer 2 and the side of the bolt head of the bolt 1 can play a good fixing role.

The upper special-shaped countersunk head 4 is an arc-shaped countersunk head.

Example 2. The bolt locking structure, as shown in Figure 2, includes a countersunk head threaded through hole arranged on the upper workpiece, and the countersunk head threaded through hole includes an upper special-shaped countersunk head 4 and a lower threaded part 3; the upper special-shaped countersunk head 4 is provided with Special-shaped washer 2, the special-shaped washer 2 is matched with the upper special-shaped countersunk head 4; the bolt 1 is connected with the upper special-shaped countersunk head 4 and the lower threaded part 3 through the special-shaped washer 2; the bolt 1 and the special-shaped washer 2 are welded and fixed.

The special-shaped washer 2 is a low carbon steel washer.

The special-shaped washer 2 is welded and fixed to one side of the bolt 1 .

The upper special-shaped countersunk head 4 is an oval countersunk head.

Example 3. The bolt locking structure, as shown in Figure 3, includes a countersunk head threaded through hole arranged on the upper workpiece, and the countersunk head threaded through hole includes an upper special-shaped countersunk head 4 and a lower threaded part 3; the upper special-shaped countersunk head 4 is provided with Special-shaped washer 2, the special-shaped washer 2 is matched with the upper special-shaped countersunk head 4; the bolt 1 is connected with the upper special-shaped countersunk head 4 and the lower threaded part 3 through the special-shaped washer 2; the bolt 1 and the special-shaped washer 2 are welded and fixed.

The special-shaped washer 2 is a low carbon steel washer.

The special-shaped washer 2 is welded and fixed to one side of the bolt 1 .

The upper special-shaped countersunk head 4 is a gourd-shaped countersunk head.

Working principle: When using, first insert the special-shaped washer 2 into the upper special-shaped countersunk head 4 of the upper workpiece, the special-shaped washer 2 matches the shape and size of the upper special-shaped countersunk head 4, and the upper special-shaped countersunk head 4 is non-circular, Therefore, the special-shaped washer 2 matched with the upper special-shaped countersunk head 4 will not rotate, and then the bolt 1 is connected to the upper workpiece 5 and the lower workpiece 6 through the special-shaped washer 2, and finally one side of the bolt head of the bolt 1 is connected to the special-shaped washer. 2 Fixed by welding; since the special-shaped washer 2 does not rotate, the bolt 1 welded with the special-shaped washer 2 will not be loose, and will not be limited by the installation position, and has a wide range of applications; and avoids welding the workpiece itself. , not limited by the material of the workpiece, and has a wider range of applications. The utility model has the advantages of wide application range.

Claims (4)

1. The bolt locking structure is characterized in that: it comprises a countersunk head threaded through hole arranged on the upper workpiece, and the countersunk head threaded through hole comprises an upper special-shaped countersunk head (4) and a lower threaded part (3); the upper special-shaped countersunk head ( 4) There is a special-shaped washer (2) inside, and the special-shaped washer (2) is matched with the upper special-shaped countersunk head (4); the bolt (1) is connected to the upper special-shaped countersunk head (4) and the lower thread through the special-shaped washer (2) The parts (3) are connected; the bolts (1) and the special-shaped washers (2) are welded and fixed. 2 . The bolt locking structure according to claim 1 , wherein the special-shaped washer ( 2 ) is a low carbon steel washer. 3 . 3 . The bolt locking structure according to claim 2 , wherein the special-shaped washer ( 2 ) is fixed to one side of the bolt ( 1 ) by welding. 4 . 4. The bolt locking structure according to claim 1, characterized in that: the upper special-shaped countersunk head (4) is an arc-shaped, elliptical or gourd-shaped countersunk head.