CN217713298U - Lock nut anti-loosening structure for speed reducer - Google Patents

Abstract

The utility model relates to a speed reducer preparation technical field especially relates to a lock nut anti loosening structure for speed reducer, bearing frame, bearing, gasket and locknut including coaxial setting are provided with a plurality of rectangular channels on the first terminal surface of bearing frame, and bearing and locknut overlap in proper order and establish on the bearing frame, and the gasket setting is between bearing and locknut, and the one end that locknut kept away from the bearing stretches out first terminal surface for thin wall excircle and length. The utility model discloses a set up the rectangular channel on the terminal surface of bearing frame to set up the one end that locknut and bearing frame are close to into the thin wall excircle, screw up locknut to appointed moment back utilizing torque wrench, strike the thin wall excircle and warp to the rectangular channel in, make the depressed part joint of rectangular channel and thin wall excircle, and then lock the bearing, compare with prior art, the utility model discloses simple structure can prevent effectively that locknut is not hard up to easy dismounting has effectively reduced the processing cost.

Description

Lock nut anti-loosening structure for speed reducer

Technical Field

The utility model relates to a speed reducer preparation technical field especially relates to a lock nut anti loosening structure for speed reducer.

Background

The speed reducer is a core transmission component of the working machine, and is mainly used for transmitting the driving force of the motor. For making the inside part of speed reducer rotate normal use, ensure the load loading of speed reducer output on its main bearing, need guarantee that the axial play of speed reducer main bearing satisfies the designing requirement, consequently the axial play of main bearing needs adjust when the assembly.

In the prior art, most of the prior art is fixed by additionally installing a thrust gasket and a round nut on one side of a main bearing, and the axial clearance of the main bearing is adjusted by adjusting the thickness of the gasket. However, the adjusting mode has a complex structure and low assembly efficiency, and the risk of looseness still exists, so that the speed reducer is easily damaged due to overlarge bearing movement, and the processing cost is increased. Therefore, the lock nut, the speed reducer and the operation machine which are simple in structure, good in anti-loosening effect, firm and reliable are designed and provided, and the technical problem to be solved urgently is solved.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the locking nut anti-loosening structure for the speed reducer overcomes the defects of poor anti-loosening effect and poor reliability of the locking nut in the prior art, and is simple in structure, good in anti-loosening effect, firm and reliable.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a lock nut anti loosening structure for speed reducer, includes bearing frame, bearing, gasket and the lock nut of coaxial setting, be provided with a plurality of rectangular channels on the first terminal surface of bearing frame, the bearing with lock nut overlaps in proper order and establishes on the bearing frame, the gasket sets up the bearing with between the lock nut, lock nut keeps away from the one end of bearing stretches out for thin wall excircle and length first terminal surface will the thin wall excircle inwards buckle extremely in the rectangular channel, realize the locking of bearing.

Furthermore, a plurality of the rectangular grooves are arranged in central symmetry.

Furthermore, a limiting table is annularly arranged on the outer diameter of the bearing seat close to the first end face, and one end of the locknut close to the bearing is abutted to the limiting table.

Further, locknut is the hollow cylinder structure, including integrative first connecting portion that sets up, second connecting portion and third connecting portion, the both ends of second connecting portion are connected respectively first connecting portion with third connecting portion, the free end of first connecting portion support extremely spacing bench, the free end of third connecting portion stretches out first terminal surface.

Further, the inner surfaces of the first connecting portion and the second connecting portion are provided with internal threads for connecting with the bearing seat.

Further, the gasket is sleeved on the outer side of the first connecting portion, and three layers are arranged on the gasket.

Further, the outer diameter of the second connecting portion is larger than the outer diameters of the first connecting portion and the third connecting portion.

Furthermore, a plurality of grooves are formed in the outer side of the second connecting portion, and the torque wrench stretches into the grooves to screw the anti-loose nut.

Furthermore, the locknut is made of steel.

The utility model has the advantages that: the utility model discloses a set up the rectangular channel on the terminal surface of bearing frame to set up the one end that locknut and bearing frame are close to into the thin wall excircle, screw up locknut to appointed moment back utilizing torque wrench, strike the thin wall excircle and warp to the rectangular channel in, make the depressed part joint of rectangular channel and thin wall excircle, and then with bearing locking, compare with prior art, the utility model discloses simple structure can prevent effectively that locknut is not hard up to easy dismounting has effectively reduced the processing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a locknut anti-loosening structure for a speed reducer in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a front view of the locknut anti-loosening structure for the speed reducer according to the embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

fig. 6 is a schematic connection diagram of the locknut in the embodiment of the present invention.

Description of the reference numerals: 10. a bearing seat; 11. a first end face; 12. a rectangular groove; 13. a limiting table; 20. a bearing; 30. a gasket; 40. a locknut; 41. a first connection portion; 42. a second connecting portion; 43. a third connecting part; 44. and (6) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 6, the locknut anti-loose structure for the speed reducer comprises a bearing seat 10, a bearing 20, a gasket 30 and a locknut 40 which are coaxially arranged, wherein a plurality of rectangular grooves 12 are arranged on a first end surface 11 of the bearing seat 10, the bearing 20 and the locknut 40 are sequentially sleeved on the bearing seat 10, the gasket 30 is arranged between the bearing 20 and the locknut 40, one end of the locknut 40, which is far away from the bearing 20, is a thin-wall excircle, and the length of the end of the locknut extends out of the first end surface 11, and the thin-wall excircle is inwards bent into the rectangular groove 12, so that the locking of the bearing 20 is realized.

The utility model discloses a set up rectangular channel 12 on the terminal surface of bearing frame 10 to set up the one end that locknut 40 and bearing frame 10 are close to into the thin wall excircle, screw up locknut to appointed moment back utilizing torque wrench, strike the thin wall excircle and warp to rectangular channel 12 in, make the depressed part joint of rectangular channel 12 and thin wall excircle, and then lock bearing 20, compare with prior art, the utility model discloses simple structure can prevent effectively that locknut is not hard up to easy dismounting has effectively reduced the processing cost.

In order to realize the locking balance of the locknut 40, the plurality of rectangular grooves 12 are arranged in a central symmetry manner, in the embodiment, the number of the rectangular grooves 12 is 4, and the number of the rectangular grooves 12 can be adjusted by a person skilled in the art according to actual conditions.

As shown in fig. 5, a limiting table 13 is circumferentially disposed on an outer diameter of the bearing seat 10 close to the first end surface 11, and one end of the locknut 40 close to the bearing 20 abuts against the limiting table 13. The locknut 40 is ensured not to move on the bearing seat 10, and the locking effect is improved.

As shown in fig. 6, the locknut 40 is a hollow cylinder structure, and includes a first connecting portion 41, a second connecting portion 42 and a third connecting portion 43 that are integrally disposed, two ends of the second connecting portion 42 are respectively connected to the first connecting portion 41 and the third connecting portion 43, a free end of the first connecting portion 41 abuts against the limiting table 13, and a free end of the third connecting portion 43 extends out of the first end surface 11. Here, the first connection portion 41, the second connection portion 42, and the third connection portion 43 are coaxially disposed, and the inner diameters of the inner surfaces of the locknuts 40 are equal.

To achieve a fixed connection of the locknut 40 to the bearing housing 10, the inner surfaces of the first and second connecting portions 41 and 42 are provided with internal threads for connection with the bearing housing 10.

As shown in fig. 4, the gasket 30 is fitted around the first connecting portion 41, and the gasket 30 is provided with three layers. In this embodiment, the material of the shim 30 is copper, and the axial play of the main bearing 20 is adjusted by adjusting the thickness of the shim 30.

With continued reference to fig. 5, the second connecting portion 42 has an outer diameter greater than the outer diameters of the first connecting portion 41 and the third connecting portion 43 so that the spacer 30 can be disposed between the bearing 20 and the locknut 40.

In order to facilitate the fastening and detaching of the locknut 40, a plurality of grooves 44 are formed on the outer side of the second connecting portion 42, and a torque wrench is inserted into the grooves 44 to tighten the locknut 40.

Specifically, the locknut 40 is made of steel. The part of the thin-wall excircle, which is folded to the rectangular groove 12, cannot be separated because of too soft material, and the anti-loosening effect is ensured.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a lock nut anti loosening structure for speed reducer, its characterized in that, including bearing frame, bearing, gasket and the lock nut of coaxial setting, be provided with a plurality of rectangular channels on the first terminal surface of bearing frame, the bearing with lock nut overlaps in proper order and establishes on the bearing frame, the gasket sets up the bearing with between the lock nut, lock nut keeps away from the one end of bearing stretches out for thin wall excircle and length first terminal surface will the thin wall excircle is inwards buckled to in the rectangular channel, realize the locking of bearing.

2. The lock nut looseness prevention structure for the reduction gear according to claim 1, wherein a plurality of the rectangular grooves are arranged in a central symmetry.

3. The locknut anti-loose structure for the speed reducer according to claim 1, wherein a limit table is annularly arranged on an outer diameter of the bearing seat close to the first end face, and one end of the locknut close to the bearing abuts against the limit table.

4. The locknut anti-loose structure for the speed reducer according to claim 3, wherein the locknut is of a hollow cylindrical structure and comprises a first connecting portion, a second connecting portion and a third connecting portion which are integrally arranged, two ends of the second connecting portion are respectively connected with the first connecting portion and the third connecting portion, a free end of the first connecting portion abuts against the limiting table, and a free end of the third connecting portion extends out of the first end face.

5. The lock nut loosening prevention structure for the reduction gear according to claim 4, wherein inner surfaces of the first connection portion and the second connection portion are provided with internal threads for connection with the bearing housing.

6. The locknut anti-loose structure for the speed reducer according to claim 4 or 5, characterized in that the gasket is sleeved outside the first connecting portion, and the gasket is provided with three layers.

7. The lock nut looseness prevention structure for the reduction gear according to claim 4 or 5, wherein an outer diameter of the second connection portion is larger than outer diameters of the first connection portion and the third connection portion.

8. The locknut anti-loose structure for the speed reducer according to claim 7, wherein a plurality of grooves are formed in the outer side of the second connecting portion, and a torque wrench is inserted into the grooves to tighten the locknut.

9. The locknut anti-loose structure for the speed reducer according to claim 1, characterized in that the locknut is made of steel.

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