CN214092668U

CN214092668U - Anti-loosening fastening nut

Info

Publication number: CN214092668U
Application number: CN202023055798.XU
Authority: CN
Inventors: 姜军; 党继红; 张趁趁; 邱兴凯; 陈龙; 夏梦宇; 王敬福; 张晋荣
Original assignee: CCCC SHB Fourth Engineering Co Ltd
Current assignee: CCCC SHB Fourth Engineering Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-31
Anticipated expiration: 2030-12-18

Abstract

The utility model relates to the field of mechanical equipment, a fastening nut spare is related to. A clamping block for clamping the screw thread of a bolt is arranged at the screw thread of the anti-loosening fastening nut, and a rectangular notch is formed in the screw thread at the inner side of the fastening nut; a clamping block is arranged in the rectangular notch; the fixture block is provided with a positioning assembly surface combined with the inner wall surface of the nut; the positioning assembly surface is a plane; two ends of the positioning assembly surface are respectively provided with an inclined surface; the lower end surface of the clamping block is provided with internal thread teeth, and the thread pitch of the internal thread teeth is the same as that of the nut; the inner thread is divided into an upper end head thread and a lower end head thread; the size and the diameter of the thread of the end thread are equal to those of the thread of the nut; the diameter of the bottom of the lower end head thread is larger than the major diameter of the nut thread, and the diameter of the top of the lower end head thread is smaller than the minor diameter of the nut thread; and a space for the movement of the clamping block is arranged between the rear end surface of the lower end head of the clamping block and the rear end surface of the clamping block. The utility model has the advantages of convenient installation, obvious effect and strong durability.

Description

Anti-loosening fastening nut

Technical Field

The utility model relates to the technical field of mechanical equipment, concretely relates to locking fastening nut that moves.

Background

In the mechanical equipment assembling process, a plurality of fittings are assembled by using bolts and nuts; when the equipment is in operation, the nut is loosened due to mechanical vibration; the loose nut loosens the bolt connection, great potential safety hazard is brought, and the maintenance cost is increased by manually tightening the nut; the common nut only fastens the screw thread of the bolt, has poor tightening effect and cannot play a due role well; and the rigid structure between the bolt and the nut generates mechanical interaction force, so that the bolt and the nut are easy to loosen.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti-loosening fastening nut spare makes its chucking bolt screw thread increase frictional resistance, prevents not hard up.

The utility model adopts the following technical scheme for accomplishing the above purpose:

a clamping block for clamping the screw thread of a bolt is arranged at the screw thread of the fastening nut, and a rectangular notch is formed in the screw thread at the inner side of the fastening nut; a clamping block is arranged in the rectangular notch; the fixture block is provided with a positioning assembly surface combined with the inner wall surface of the nut; the positioning assembly surface is a plane; two ends of the positioning assembly surface are respectively provided with an inclined surface; the upper end surface and the lower end surface of the clamping block are provided with internal thread teeth, and the thread pitch of the internal thread teeth is the same as that of the nut; the inner thread is divided into an upper end head thread and a lower end head thread; the size and the diameter of the thread of the upper end head thread are equal to those of the thread of the nut; the diameter of the bottom of the lower end head thread is larger than the major diameter of the nut thread, and the diameter of the top of the lower end head thread is smaller than the minor diameter of the nut thread; and a space for the movement of the clamping block is arranged between the rear end surface of the lower end head of the clamping block and the rear end surface of the clamping block.

Both sides of the upper end thread and the lower end thread are provided with chamfers for preventing mechanical scraping and rubbing during use.

The utility model provides a locking fastening nut that moves, nut fastener have fixture block, have greatly improved the frictional resistance between nut and bolt thread; the clamping block prevents the bolt from moving reversely; and this design installation is simple, the simple operation, is applicable to multiple equipment fixing.

Drawings

Fig. 1 is a use state diagram of the fastening nut of the present invention.

Fig. 2 is a schematic view of the fastening nut slot of the present invention.

Fig. 3 is a left side view of the fastening nut fixture block of the present invention.

Fig. 4 is a front view of the fastening nut block of the present invention.

Fig. 5 is a left side sectional view of the fastening nut of the present invention.

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

In the figure: 1. the fixture comprises a fastening nut, 2, a fixture block, 3, a bolt, 4, a connecting piece, 5, a rectangular notch, 6, an upper end screw thread, 7, a lower end screw thread, 8, a fulcrum, 9, a positioning assembly surface, 10 and a fixture block chamfer.

Detailed Description

The invention is described in connection with the accompanying drawings and the embodiments:

as shown in fig. 1, fig. 2, fig. 3, and fig. 4 in combination with fig. 5 and fig. 6, in the anti-loosening fastening nut, a clamping block 2 for clamping a bolt thread is arranged at a thread of the fastening nut 1, and a rectangular notch 5 is arranged at a thread of the inner side of the fastening nut 1; a clamping block 2 is arranged in the rectangular notch 5; the fixture block 2 is provided with a positioning assembly surface 9 combined with the inner wall surface of the nut; the positioning assembly surface 9 is a plane; two ends of the positioning assembly surface 6 are respectively provided with an inclined surface; the lower end surface of the clamping block 2 is provided with internal thread teeth, and the thread pitch of the internal thread teeth is the same as that of the nut; the inner thread is divided into an upper end head thread 6 and a lower end head thread 7; the big and small diameters of the threads of the upper end head thread 6 are equal to the big and small diameters of the threads of the nut; the diameter of the bottom of the lower end head thread 7 is larger than the major diameter of the nut thread, and the diameter of the top of the lower end head thread 7 is smaller than the minor diameter of the nut thread; and a space for the movement of the clamping block is arranged between the rear end surface of the lower end head of the clamping block and the rear end surface of the clamping block.

When the fixture block is installed, the upper end of the fixture block is firstly in threaded contact with a bolt, and the height of the thread tooth of the upper end of the fixture block is equal to that of the thread tooth of the nut; the height of the thread of the lower end head of the clamping block is slightly greater than that of the thread of the nut; after the nut fastens the bolt, the thread at the lower end of the fixture block is extruded by the bolt thread, the upper end is tilted under the action of the middle fulcrum, and the bolt thread is clamped.

Finally, it is noted that the above preferred embodiments have been given by way of illustration and not limitation, and that while the invention has been described in detail with reference to the preferred embodiments described above, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a locking fastening nut that moves which characterized in that: a clamping block for clamping the screw thread of the bolt is arranged at the screw thread of the fastening nut, and a rectangular notch is formed in the screw thread at the inner side of the fastening nut; a clamping block is arranged in the rectangular notch; the fixture block is provided with a positioning assembly surface combined with the inner wall surface of the nut; the positioning assembly surface is a plane; two ends of the positioning assembly surface are respectively provided with an inclined surface; the lower end surface of the clamping block is provided with internal thread teeth, and the thread pitch of the internal thread teeth is the same as that of the nut; the inner thread is divided into an upper end head thread and a lower end head thread; the size and the diameter of the thread of the end screw thread are equal to those of the nut thread; the diameter of the bottom of the lower end head thread is larger than the major diameter of the nut thread, and the diameter of the top of the lower end head thread is smaller than the minor diameter of the nut thread; and a space for the movement of the clamping block is arranged between the rear end surface of the lower end head of the clamping block and the rear end surface of the clamping block.

2. A locking fastening nut as defined in claim 1, further comprising: both sides of the upper end thread and the lower end thread are provided with chamfers for preventing mechanical scraping and rubbing during use.

3. A locking fastening nut as defined in claim 1, further comprising: the height of the lower end head thread is greater than that of the nut thread.