CN203627497U

CN203627497U - Shaft end locking mechanism

Info

Publication number: CN203627497U
Application number: CN201420000072.1U
Authority: CN
Inventors: 李军
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-01
Filing date: 2014-01-01
Publication date: 2014-06-04
Anticipated expiration: 2024-01-01

Abstract

The utility model discloses a shaft end locking mechanism. By the adoption of the shaft end locking mechanism, a fastening nut (3) and a locking nut (4) which have adverse internal threads are arranged on a shaft end (1), after the two nuts are screwed tightly; because the screwing directions of the two nuts are adverse, when the shake is strong, if the inside nut is loose, the outside nut can be screwed to the same direction because of the friction. But because the directions of the internal threads are adverse, the outside nut can be previously locked, so as to prevent loosing. Compared with the prior art, the shaft end of the shaft end locking mechanism disclosed by the utility model can be locked, is not easy to loose and can be disassembled easily, and the shaft end locking mechanism has the advantages of simple structure and convenience in operation.

Description

A kind of axle head locking mechanism

Technical field

The utility model relates to a kind of axle of machinery, especially a kind of axle head locking mechanism.

Background technique

At many axles that are mechanically all provided with, conventionally in the termination of axle, bearing is also installed, gear etc., in order to prevent from being arranged on the bearing of axle head, gears etc. move axially conventionally all need to install locking mechanism at axle head, the simplest way arranges a nut at axle head exactly, but, along with machinery vibrates for a long time, the nut that is arranged on axle head is easy to occur loosening, even come off, lose the effect of locking, easily cause bearing, axially outer the moving of gear, there is mechanical damage in the lighter, serious meeting has an accident, cause unnecessary loss, in prior art, also there is the mode that adopts locking plate to fix together with nut, around nut, be provided with teeth groove, after screwing nut, the lock tooth on locking plate is snapped onto in the teeth groove on nut, thereby can prevent the rotation voluntarily of nut, it is cumbersome that but this locking mechanism removes, also easily there is in addition the situation of the lock tooth fracture on locking plate, thereby lose the effect of locking, Chinese utility model patent ZL95245490.4 discloses " element fastening device on a kind of transmission shaft ", round nut is fixed by two bolts in outer end at spindle nose, at the through hole through two bolt tails with locking silk, locking silk is twisted into 8-shaped, thereby can prevent that round nut is loosening, but this locking device removes also not too convenient.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of axle head locking mechanism, not only can lock axle head, is not easy to become flexible, and is also easy to dismounting, and simple in structure, easy to use.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: comprise axle head, it is characterized in that: be provided with binding thread section in the outside of described axle head, be provided with locking screw section in the outside of binding thread section, external diameter and binding thread section that the external diameter of described binding thread section is greater than locking screw section are contrary with the hand of spiral of locking screw section, outside in binding thread section is provided with tightening nut, the width of tightening nut is greater than the length of binding thread section, is provided with locking nut in the outside of locking screw section.

Described tightening nut and/or locking nut can be that hexagon nut can be also round nut, are provided with notch in the outer periphery of round nut.

The utility model is by arranging tightening nut and the locking nut of two internal thread opposite directions at axle head, after screwing because the sense of rotation of two nuts is contrary, in the time that vibrations are violent, if the nut of the inside is loosening, because frictional force makes the nut of outside also to a direction rotation, but due to internal thread opposite direction, outer nut will pretension like this, prevent from becoming flexible, compared with prior art, the utility model not only can be locked axle head, be not easy to become flexible, also be easy to dismounting, and simple in structure, easy to use.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment 1 structural representation.

Fig. 2 is the side-looking structural representation of Fig. 1.

Fig. 3 is the utility model embodiment 2 structural representation.

Shown in figure: 1 is axle head, 2 is binding thread section, and 3 is tightening nut, and 4 is locking nut, and 5 is locking screw section, and 6 is notch.

Embodiment

embodiment 1:with reference to Fig. 1-Fig. 2, for the utility model embodiment 1 structural representation, be provided with binding thread section 2 in the outside of axle head 1, be provided with locking screw section 5 in the outside of binding thread section 2, external diameter and binding thread section 2 that the external diameter of binding thread section 2 is greater than locking screw section 5 are contrary with the hand of spiral of locking screw section 5, be provided with tightening nut 3 in the outside of binding thread section 2, the width of tightening nut 3 is greater than the length of binding thread section 2, be provided with locking nut 4 in the outside of locking screw section 5, after screwing because the sense of rotation of two nuts is contrary, in the time that vibrations are violent, if the nut of the inside is loosening, because frictional force makes the nut of outside also to a direction rotation, but due to internal thread opposite direction, outer nut will pretension like this, prevent from becoming flexible, tightening nut 3 in the present embodiment and locking nut 4 are hexagon nut, certainly tightening nut 3 and locking nut 4 can be also other polygonal nuts.

embodiment 2:with reference to Fig. 3, be the utility model embodiment 2 structural representation, compared with embodiment 1, the difference of the present embodiment is: tightening nut 3 for round nut, is provided with notch 6 in the outer periphery of round nut with locking nut 4, and processing is got up convenient.

Claims

1. an axle head locking mechanism, comprise axle head (1), it is characterized in that: be provided with binding thread section (2) in the outside of described axle head (1), be provided with locking screw section (5) in the outside of binding thread section (2), external diameter and binding thread section (2) that the external diameter of described binding thread section (2) is greater than locking screw section (5) are contrary with the hand of spiral of locking screw section (5), be provided with tightening nut (3) in the outside of binding thread section (2), the width of tightening nut (3) is greater than the length of binding thread section (2), be provided with locking nut (4) in the outside of locking screw section (5).

2. axle head locking mechanism according to claim 1, is characterized in that: described tightening nut (3) is hexagon nut.

3. axle head locking mechanism according to claim 1, is characterized in that: described tightening nut (3) is round nut, is provided with notch (6) in the outer periphery of round nut.

4. according to the axle head locking mechanism described in claim 1 or 2 or 3, it is characterized in that: described locking nut (4) is hexagon nut.

5. according to the axle head locking mechanism described in claim 1 or 2 or 3, it is characterized in that: described locking nut (4) is round nut, is provided with notch (6) in the outer periphery of round nut.