CN116753226A

CN116753226A - Bolt

Info

Publication number: CN116753226A
Application number: CN202310989528.5A
Authority: CN
Inventors: 李涛; 郑晓韵; 叶云云
Original assignee: Zhejiang Tiangong Fastener Co ltd
Current assignee: Zhejiang Tiangong Fastener Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2023-09-15

Abstract

The invention discloses a bolt, which comprises a rod part and a first component, wherein the first component is wound on the rod part to form external threads; the invention is convenient for replacing the external thread and reduces the maintenance cost.

Description

Bolt

Technical Field

The invention relates to a bolt.

Background

The bolts are used for connecting and fastening the effect. In large-scale equipment, such as wind driven generator blades, a bolt fixing mode is adopted to achieve a fixing effect.

The bolt used on the wind driven generator has large size and high processing cost, and the price of one bolt is up to thousands yuan. The screw bolt is not frequent in disassembly times, and in the long term, the screw bolt can be tightly meshed with the blade or the fixed object, so that teeth (namely external threads) are easy to damage in the disassembly process, after the teeth are damaged, the screw bolt cannot be used, a new screw bolt needs to be replaced, the whole original screw bolt is in a normal state except for the damage of the teeth, and under the condition, the screw bolt is replaced, so that the maintenance cost is high.

Disclosure of Invention

The invention mainly solves the technical problem of providing a bolt.

The technical scheme adopted by the invention for solving the technical problems is as follows: a bolt includes a shank and a first member that is wound around the shank to form an external thread.

By adopting the structure, the first part is wound to form the external thread, in the fastening process, the first part is matched with the fixed object along with the rod part, the gradual screwing effect is achieved, the screwing effect is achieved, when the external thread is damaged, the maintenance effect of the external thread can be achieved by replacing the first part, and the cost of the first part is far lower than the cost of replacing the whole bolt, so that the maintenance cost can be reduced.

Wherein, pole lower extreme is equipped with first locating hole, and first part stretches into in the first locating hole.

The setting of first locating hole has formed the fixed effect of location between first part and the pole portion, and first part is through rotatory, forms the winding effect, and whole after the winding is accomplished cooperates with the fixture, realizes connecting fixed effect.

The novel multifunctional bicycle comprises a bicycle body, and is characterized by further comprising a head part, wherein a second positioning hole is formed in the rod part and/or the head part, and the first component stretches into the second positioning hole.

Through the setting of second locating hole, form the effect of secondary fixation for first part and head or pole portion cooperate completely, thereby realize holistic fixed effect.

Wherein, be equipped with the helicla flute on the pole portion, first part is embedded into the helicla flute.

The spiral groove is arranged, a certain positioning effect is formed, and the first component can form a winding effect through the spiral groove, so that the winding accuracy is improved.

Wherein the first part is triangular or rectangular in cross-section.

External threads with different shapes are formed through the arrangement of different sections, and different fastening effects are formed through cooperation.

The first component comprises a fixing part and a tooth part, wherein the cross section of the tooth part is triangular or trapezoidal.

The fixing effect is formed through the fixing part, so that the fixing area between the first component and the rod part is larger, and the laminating and fixing effect is better met.

Wherein, fixed part imbeds to the helicla flute in, and fixed part is the cambered surface towards helicla flute one side.

The fixed part is the cambered surface setting, better realization and the cooperation effect between the helicla flute, improves the laminating degree between the two.

Wherein the first member has a hardness greater than the hardness of the stem portion.

The setting of adopting different intensity has increased the intensity of first part, for among the prior art, whole bolt intensity is the same, and adopts this kind of structure, improves the intensity of external screw thread greatly, prevents to break in the use or dismantlement in-process external screw thread.

Wherein the rod part and the first component are mutually independent.

Mutually independent sets up, better satisfying dismantles the installation effect.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the structure of the head and the shaft in embodiment 1 of the present invention;

FIG. 3 is a partial cross-sectional view of embodiment 1 of the present invention;

fig. 4 is a partial sectional view of another embodiment of embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-4, a bolt comprises a head 1, a shank 2 and a first part 3.

The head 1 is used for realizing the effect of driving the whole rotation of the bolt, wherein the head 1 is provided with a driving part 11, and the driving part 11 can be a straight groove, a cross groove, a rice groove, an inner hexagon, an outer hexagon and the like. Those skilled in the art can choose according to the actual needs.

The rod 2 is vertically connected with the head 1, the other end of the rod 2 extends vertically downwards, the bottom surface (i.e. the lowest surface extending vertically downwards) of the rod 2 can be a plane, can be a pointed end, can be adjusted according to actual requirements, and is preferably a plane.

In this embodiment, the rod portion 2 may be a polished rod, that is, a smooth surface, and the first member 3 is wound onto the rod portion 2 to form an external thread, and the rod portion 2 may also be provided with a spiral groove 21, where the first member 3 is partially embedded into the spiral groove 21. The arrangement of the spiral groove 21 forms a certain positioning effect, and the first component 3 can form a winding effect through the spiral groove 21, so that the winding accuracy is improved.

In order to increase the positioning and fixing effect of the first component 3, the lower end of the rod 2 is provided with a first positioning hole 22, and the first component 3 extends into the first positioning hole 22. The arrangement of the first positioning holes 22 forms the positioning and fixing effect between the first component 3 and the rod part 2, the first component 3 forms the winding effect through rotation, and the whole body after winding is matched with a fixture to realize the effect of connection and fixation. The fixing manner between the first component 3 and the first positioning hole 22 may be that the first positioning hole 22 obliquely penetrates through the bottom surface of the rod portion 2 from the side surface of the lower end of the rod portion 2, the first component 3 penetrates through the first positioning hole 22, and one protruding end is matched with the bottom surface to form a bending type fixing manner, so that one end of the first component 3 forms a positioning fixing effect, and the other end of the first component 3 is spirally wound along the rod portion 2. Here, the first component 3 may be further connected to a small iron piece, where the small iron piece is attached to the bottom surface to form a limiting and fixing effect, and the small iron piece only needs to be larger than the aperture of the first positioning hole 22, and does not interfere with the fixing between the bolt and the fixture.

The second positioning hole 23 may be located on the upper end of the shaft 2 or the head 1 or may extend through the upper end of the shaft 2 or the head 1. The second positioning hole 23 is similar to the first positioning hole 22 in structure, the second positioning hole 23 extends upwards in an inclined direction, the tail end of the first component 3 passes through the second positioning hole 23 to form a positioning and fixing effect, the fixing mode can be bending type fixing, the fixing effect can also be formed through a small iron piece, and the small iron piece can be attached to the bottom surface of the head 1.

The rod part 2 and the first component 3 are mutually independent, namely, the rod part 2 and the first component 3 are detachably connected, before being matched, the rod part and the first component are mutually independent, and after being released from being matched, the rod part and the first component are mutually independent, so that the effect of disassembling, replacing and installing is met. When the external thread is damaged or broken, the replacement effect can be achieved only by replacing the first part 3, and the maintenance cost is greatly reduced.

The first part 3 is wire-shaped, for example wire or the like. Here, the hardness of the first member 3 is larger than the hardness of the lever portion 2. The setting of adopting different intensity has increased the intensity of first part 3, for among the prior art, whole bolt intensity is the same, and adopts this kind of structure, improves the intensity of external screw thread greatly, prevents to take place the fracture at use or dismantlement in-process external screw thread. The material of the first member 3 and the rod 2 may be the same, but the hardness is different and the corresponding model is different.

The first part 3 is triangular or rectangular in cross-section. External threads with different shapes are formed through the arrangement of different sections, and different fastening effects are formed through cooperation.

In this embodiment, the first member 3 includes a fixing portion 31 and a tooth portion 32, the fixing portion 31 is partially embedded in the spiral groove 21, and a side of the fixing portion 31 facing the spiral groove 21 is a cambered surface. The fixed part 31 is arranged in a cambered surface manner, so that the matching effect with the spiral groove 21 is better realized, and the bonding degree between the fixed part and the spiral groove is improved.

The tooth 32 is fixedly connected to the fixing portion 31, and the tooth 32 extends outward, and the cross section of the tooth 32 is triangular or trapezoidal. The fixing effect is formed through the fixing part 31, so that the fixing area between the first component 3 and the rod part 2 is larger, and the attaching and fixing effects are better met.

The first member 3 is wound on the rod portion 2 to form an external thread, and the pitch of the external thread, the ratio of the overall height of the external thread to the height of the rod portion 2 and the double thread can be adjusted according to practical situations, so that the description is not expanded in this embodiment.

By adopting the structure, the first part 3 is wound to form the external thread, the first part 3 is not required to be welded and fixed with the rod part 2 in the winding process, the winding effect can be realized only manually, in addition, in the fastening process, the first part 3 is matched with the rod part 2 and a fixed object, the effect of gradual screwing can be formed, as the first part 3 and the nut are matched in the process, the first part 3 is positioned between the internal thread of the nut and the rod part 2, the first part 3 and the rod part 2 cannot be loosened more and more tightly in the rotating process, when the external thread is damaged, the maintenance effect of the external thread can be realized by replacing the first part 3, and the cost of the first part 3 is far lower than the cost of replacing the whole bolt, so that the maintenance cost can be reduced.

Claims

1. A bolt, characterized in that: comprises a rod part and a first component, wherein the first component is wound on the rod part to form external threads.

2. A bolt according to claim 1, wherein: the lower end of the rod part is provided with a first positioning hole, and the first part extends into the first positioning hole.

3. A bolt according to claim 2, wherein: the device also comprises a head part, a rod part and/or a head part are/is provided with a second positioning hole, and the first part extends into the second positioning hole.

4. A bolt according to claim 1, wherein: the rod portion is provided with a spiral groove, and the first part is partially embedded into the spiral groove.

5. A bolt according to claim 4, wherein: the first member is triangular or rectangular in cross-section.

6. A bolt according to claim 4, wherein: the first component comprises a fixing part and a tooth part, wherein the cross section of the tooth part is triangular or trapezoidal.

7. A bolt according to claim 6, wherein: the fixing part is partially embedded into the spiral groove, and one side of the fixing part facing the spiral groove is a cambered surface.

8. A bolt according to claim 1, wherein: the hardness of the first component is greater than the hardness of the stem.

9. A bolt according to claim 1, wherein: the rod part and the first component are mutually independent.