CN210949486U

CN210949486U - Anti-drop locking bolt

Info

Publication number: CN210949486U
Application number: CN201921676311.4U
Authority: CN
Inventors: 常占峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-07-07
Anticipated expiration: 2029-10-09

Abstract

The utility model particularly relates to an anti-drop locking bolt, including the bolt body, its characterized in that: the bolt body comprises a nut, a screw rod and a reverse screw rod, the reverse screw rod is positioned at the end part of the screw rod, the screw rod penetrates through the bottoms of the first workpiece plate and the second workpiece plate and is locked by the nut, a groove is formed in the side edge of the reverse screw rod, a stop piece is arranged in the groove, and the reverse nut is sleeved on the reverse screw rod; the utility model has the advantages of simple structure, and reasonable design, put into the through-hole of work piece board one and work piece board two with the bolt body, screw on the screw rod through the nut, realize the locking to work piece board one and work piece board two, put into reverse screw rod bottom until the locking piece pastes tight nut with the locking piece, again with reverse nut screw in reverse screw rod on, until with locking piece gland nut, owing to receive the packing force of reverse nut to the locking piece when the nut atress will carry out reverse not hard up, lead to the nut can't carry out reverse rotation, thereby reach the purpose of locking.

Description

Anti-drop locking bolt

Technical Field

The utility model belongs to a fastener, in particular to anti-drop locking bolt.

Background

The bolt belongs to a machine part, the bolt is the great class spare part of use amount in current machinery field always, the bolt mainly is used for the fastening to have the spare part of through-hole with the nut cooperation, this connected mode is called bolted connection, can realize the not hard up of spare part when unscrewing the nut from the bolt, therefore bolted connection is also called can dismantle the connection, and the more traditional bolted connection is mostly to adopt bolt and bolt cap cooperation to realize screwing up to the spare part, but this locking mode long-time use atress can lead to nut counter rotation, lead to the fastening of spare part not hard up, can cause some big incident, cause loss of property and to cause the injury to the person, therefore easy not hard up is the very big potential safety hazard that causes the accident always after the fastening of bolt.

Some problems to the aforesaid exist the utility model provides an anti-drop locking bolt.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide an anti-drop locking bolt.

The purpose of the utility model is realized like this: the utility model provides an anti-drop lock bolt, includes the bolt body, the bolt body include nut, screw rod and reverse screw rod, reverse screw rod is located the tip of screw rod, the screw rod passes work piece board one and two its bottoms of work piece board and passes through the nut locking, reverse screw rod side is seted up flutedly, is provided with the locking piece in the recess, the cover is equipped with reverse nut on the reverse screw rod.

The screw is opposite to the reverse screw in the thread rotating direction.

The screw rod and the nut have the same thread direction.

The reverse screw rod and the reverse nut have the same thread direction.

The groove is strip-shaped and penetrates through the reverse screw rod.

The nut is hexagonal.

The inner side of the stop piece is provided with a bulge.

And a plurality of friction blocks are arranged on one side surface of the reverse nut.

The utility model discloses when using, put into the through-hole of work piece board one and work piece board two with the bolt body, screw on the screw rod through the nut, realize the locking to work piece board one and work piece board two, the length of screw rod can be formulated as required, guarantee that another terminal surface of nut is located the position of reverse screw rod after screwing up, in order to guarantee the locking plate can paste tight nut, put into reverse screw rod bottom until the locking plate pastes tight nut with the locking plate, the interior bulge of locking plate makes the locking plate be located reverse screw rod's bottom along the recess on the reverse screw rod, again with reverse nut screw in on the reverse screw rod, until with locking plate gland nut, owing to receive reverse nut to the packing force of locking plate when the nut atress will carry out reverse not hard up, lead to the nut can't reverse rotation, thereby reach the purpose of locking.

Drawings

Fig. 1 is a schematic structural diagram of the utility model.

Fig. 2 is a partial structural sectional view of the utility model.

Fig. 3 is a schematic structural view of the stopper of the present invention.

Fig. 4 is a bottom view of the bolt body of the utility model.

Fig. 5 is a front view of the bolt body of the utility model.

Fig. 6 is a top view of the reverse nut of the present invention.

Fig. 7 is an assembly view of the utility model.

Detailed Description

Embodiment 1, as shown in fig. 1-6, an anti-drop lock bolt, including the bolt body, the bolt body include nut 1, screw rod 8 and reverse screw rod 5, nut 1 is the hexagon, facilitate the use spanner screws up it, reverse screw rod 5 is located the tip of screw rod 8, the length of screw rod 8 can be formulated as required, guarantee to make the locking plate 3 paste tight nut 2 after nut 2 screws up, screw rod 8 passes through work piece board 6 and its bottom of work piece board two 7 and passes through nut 2 locking, recess 9 has been seted up to reverse screw rod 5 side, recess 9 is the bar, it can make the arch 31 of locking plate 3 get into reverse screw rod 5 bottom along recess 9 to set up recess 9, and recess 9 runs through reverse screw rod 5.

A stop piece 3 is arranged in the groove 9, and a bulge 31 is arranged on the inner side of the stop piece 3; the reverse screw 5 is sleeved with a reverse nut 4; a plurality of friction blocks 10 are arranged on one side face of the reverse nut 4, the friction blocks 10 protrude out of the side face of the reverse nut 4, the screw threads of the screw rod 8 and the reverse screw rod 5 are opposite in rotating direction, the reverse screw threads can be arranged to enable the nut 2 and the reverse nut 4 to rotate oppositely, acting force is generated on the stop plate 3 when the nut 2 is loosened, the reverse nut 4 generates opposite acting force on the stop plate 3 to further prevent the stop plate 3 from moving downwards, locking failure caused by rotation of the nut 2 is avoided, the screw threads of the screw rod 8 and the nut 2 are identical in rotating direction, and the reverse screw rod 5 and the reverse nut 4 are identical in rotating direction.

The bolt body is put into the through holes of the first workpiece plate 6 and the second workpiece plate 7, the first workpiece plate 6 and the second workpiece plate 7 are locked by screwing the nut 2 on the screw rod 8, the length of the screw rod 8 can be set according to requirements, the other end face of the nut 2 is ensured to be positioned at the reverse screw rod 5 after the nut 2 is screwed down, so as to ensure that the stop piece 3 can be tightly attached to the nut 2, the stop piece 3 is placed at the bottom of the reverse screw rod 5 until the stop piece 3 is tightly attached to the nut 2, the inner bulge of the stop piece 3 enables the stop piece 3 to be positioned at the bottom of the reverse screw rod 35 along the groove 9 on the reverse screw rod 5, then the reverse nut 4 is screwed into the reverse screw rod 5 until the stop piece 3 compresses the nut 2, when the nut 2 is stressed to loosen reversely, the nut 2 cannot rotate reversely due to the pressing force of the reverse nut 4 on the stop piece 3, so that the locking purpose is achieved.

Embodiment 2, as shown in fig. 4 to 7, according to the assembly requirement, an assembly scheme of removing the stop piece 3 can be adopted, the bolt body is placed into the through hole of the first workpiece plate 6 and the second workpiece plate 7, the first workpiece plate 6 and the second workpiece plate 7 are locked by screwing the nut 2 onto the screw rod 8, the length of the screw rod 8 can be set according to the requirement, the outer side end face of the nut 2 after being screwed down is ensured to be located at the position of the reverse screw rod 5, so as to ensure that the reverse nut 4 can be attached to the nut 2 when being screwed in, the reverse nut 4 is screwed into the bottom of the screw rod 8 until being attached to the nut 2, the friction block 10 on the side face of the reverse nut 4 is attached to the nut 2 at this time, the friction force between the reverse nut 4 and the nut 2 is increased, because the rotation direction of the nut 2 and the reverse nut 4 is opposite when being locked, when the nut 2 is unscrewed, the acting force generated by the reverse nut 4 rotates the reverse nut 4, so that the reverse nut 4 can generate reverse acting force to the nut 2, and the nut 2 can not rotate, thereby achieving the locking effect.

Embodiment 3, a first nut with a frosted surface and a first reverse nut can be used to replace the first nut and the second reverse nut in the second embodiment, the bolt body is placed into the through hole of the first workpiece plate 6 and the second workpiece plate 7, the first nut is screwed on the screw rod 8 to lock the first workpiece plate 6 and the second workpiece plate 7, the length of the screw rod 8 can be set according to requirements, the outer side end face of the first nut is located at the position of the reverse screw rod 5 after the nut 2 is screwed, so as to ensure that the first reverse nut can be tightly attached to the first nut when being screwed in, the first reverse nut is screwed into the bottom of the screw rod 8 until being tightly attached to the first nut, the frosted surface on the first reverse nut and the first nut can increase friction force, because the first nut and the first reverse nut rotate in opposite directions when being locked, when the first nut is loosened, the first reverse nut can rotate in the direction of continuous screwing of the first reverse nut by the acting force generated on the first reverse nut, so that the reverse nut generates a reverse acting force to the nut, and the nut cannot rotate, thereby achieving the locking effect.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an anti-drop locking bolt, includes the bolt body, its characterized in that: the bolt body comprises a nut, a screw rod and a reverse screw rod, the reverse screw rod is located at the end of the screw rod, the screw rod penetrates through the bottoms of the first workpiece plate and the second workpiece plate and is locked through the nut, a groove is formed in the side edge of the reverse screw rod, a stop piece is arranged in the groove, and the reverse nut is sleeved on the reverse screw rod.

2. A locking bolt according to claim 1, wherein: the screw is opposite to the reverse screw in the thread rotating direction.

3. A locking bolt according to claim 1, wherein: the screw rod and the nut have the same thread direction.

4. A locking bolt according to claim 1, wherein: the reverse screw rod and the reverse nut have the same thread direction.

5. A locking bolt according to claim 1, wherein: the groove is strip-shaped and penetrates through the reverse screw rod.

6. A locking bolt according to claim 1, wherein: the nut is hexagonal.

7. A locking bolt according to claim 1, wherein: the inner side of the stop piece is provided with a bulge.

8. A locking bolt according to claim 1, wherein: and a plurality of friction blocks are arranged on one side surface of the reverse nut.