CN217873698U - Distribution box output shaft lock nut and paver - Google Patents

Abstract

The utility model discloses a distribution box output shaft lock nut and paver, including the nut main part, with the even conical head as an organic whole of nut main part, the nut main part is equipped with coaxial centre bore with conical head's inside, is equipped with continuous internal thread in the interior disc of nut main part, and the middle part of outer disc is equipped with the circumference notch. The utility model discloses a divide workbin output shaft lock nut has promoted the reliability that the paver divides the workbin, reduces the assembly degree of difficulty, improves fastening efficiency, and has reduced the various quality losses that cause because of lock nut is not hard up in the product market use, has promoted product reliability.

Description

Distribution box output shaft lock nut and paver

Technical Field

The utility model relates to a distribution box output shaft lock nut and paver belongs to road building machinery technical field.

Background

The paver divides the workbin to be the important equipment of paver, divides the workbin output shaft because bear radial and axial effort, generally adopts tapered roller bearing, because this bearing work is in low-speed heavy load operating mode, and belongs to important equipment, therefore the axial positioning of bearing is especially important. The existing paver material distributing box generally adopts double nuts and gaskets to carry out axial positioning of the bearing, and has the problems of low positioning precision, complex installation, easy occurrence of nut separation and bearing damage. As the nuts are loosened, the output shaft series components of the distributing box, such as the cross shaft, the flange plate, the bearing, the oil seal, the driving disc and the like, are all damaged, great loss is caused to users, the labor intensity of workers is increased due to field replacement, and a large amount of manpower and material resources are consumed. The damage of the material distribution box can also cause the halt of the whole machine and influence the progress of the project. Therefore, the locking nut of the output shaft bearing is improved, the system reliability is improved, and the locking nut has very important significance for a material distribution system of a paver.

Conventionally, various lock mechanisms of lock nuts are known, and for example, patent No. CN201410553374.6 discloses a lock nut having a cylindrical nut body, in which a plurality of through holes are provided in a circumferential direction of the nut body so as to pass through from an outer circumferential surface to an inner circumferential surface of a female screw, and after the nut is tightened to a male screw of a shaft, a set screw is screwed into the through holes, and the set screw abuts against the male screw of the shaft, thereby preventing the nut from loosening. The existing lock nut has the following problems: on one hand, part of the locking nuts can be loosened for various reasons after working for a period of time, which can cause the failure of the bearing and further cause the major failure of a host system; on the other hand, some lock nuts are more effective on the light load working condition, but under the heavy load working condition, the attenuation of the locking effect is faster, the service life is very short, and the functions of the host are seriously influenced.

Disclosure of Invention

Problem to above-mentioned prior art exists, the utility model provides a divide workbin output shaft lock nut has better locking effect, can effectively satisfy the user demand of paver divide workbin heavy load operating mode, guarantees the service function of complete machine, and manufacturing cost is lower, convenient assembling.

The utility model also provides an installation should divide workbin output shaft lock nut's paver.

In order to realize the above aim, the utility model discloses a divide workbin output shaft lock nut, including the nut main part, with the even cone head as an organic whole of nut main part, the nut main part is equipped with coaxial centre bore with cone head's inside, is equipped with continuous internal thread in the interior disc of nut main part, and the middle part of outer disc is equipped with the circumference notch.

As a refinement, the internal and external tapers of the tapered head portion are the same.

As an improvement, a threaded hole is axially arranged on the nut body which is positioned on one side of the notch and close to the conical head, and a step unthreaded hole is arranged on the nut body on the other side of the notch and corresponds to the position of the threaded hole.

As an improvement, the nut bodies on both sides of the notch are fastened by screws.

As an improvement, the conical head is in a circumferential shape and is cut and evenly divided into a plurality of identical arc-shaped sub-heads.

As a refinement, the end face of the conical head is perpendicular to the nut axis of the nut body.

As an improvement, the cutting width of the notch is not less than 1.5 times of the screw pitch of the nut.

As an improvement, axial grooves are uniformly distributed on the outer circular surface of the nut main body.

Additionally, the utility model also provides a paver, install on the paver divide workbin output shaft lock nut.

As the improvement, the paver comprises an output shaft, wherein a bearing is installed on the output shaft, an output chain wheel is installed outside the bearing, the locking nut is in threaded connection with the output shaft, and the conical head is abutted against the end face of the bearing.

Compared with the prior art, the utility model discloses a divide workbin output shaft lock nut has promoted the reliability that the paver divides the workbin, reduces the assembly degree of difficulty, improves fastening efficiency, and has reduced various quality losses that product market in the use caused because of lock nut is not hard up, has promoted product reliability.

Drawings

Fig. 1 is a partial side view of a locking nut of an output shaft of a material distribution box of a paver according to an embodiment of the present invention;

FIG. 2 is a perspective view of a lock nut provided in accordance with an embodiment of the present invention;

FIG. 3 is a front view of a lock nut provided in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a lock nut provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a locknut anti-loosening provided by an embodiment of the present invention;

in the figure: 1. the output chain wheel comprises an output chain wheel body 2, a bearing 3, an output shaft 4, a locking nut 5, a conical head 6, a nut body 7, a nut axis 8, an outer circular surface 9, a notch 10, an inner circular surface 11, a screw 12, a head part 13 and an axial groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

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, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.

The utility model discloses in, lock nut's axis is the nut axis 7 of the interior centre bore of nut main part 6. Unless otherwise indicated, the terms "circumferential", "axial" and "radial" are relative to the axis.

Example 1

As shown in fig. 2, 3 and 4, the locknut for the output shaft of the distribution box comprises a nut main body 6 and a conical head 5 which is connected with the nut main body 6 into a whole, and is manufactured integrally, so that the locknut is relatively low in cost and convenient to assemble;

the nut body 6 and the conical head 5 are internally provided with coaxial central holes, and the inner circular surface 10 of the nut body 6 is internally provided with continuous internal threads for matching with external threads of matching parts such as shafts; the middle part of the outer circular surface 8 is provided with a circumferential notch 9, and the nut main bodies 6 at the two sides of the notch 9 are connected; the conical head 5 is intended to be in contact with the end face of a bearing or the like to be locked.

As a modification of the embodiment, a threaded hole is axially arranged on the nut body 6 near the tapered head 5 on one side of the notch 9, a stepped unthreaded hole is arranged on the nut body 6 on the other side of the notch 9 at a position corresponding to the threaded hole, and the nut bodies 6 on both sides of the notch 9 are connected and tightened by a screw 11. As shown in fig. 5, the nut body 6 is slightly deformed on both sides of the notch 9 due to the axial pressure exerted on the nut body 6 by the screw 11 during tightening. Deformation results in two benefits: firstly, the reaction force of deformation acts on the screw 11, so that the screw 11 can be prevented from loosening; the other one is that the deformation can cause the axial displacement of the internal thread of the nut body 6, and the thread pitch changes, so that the internal thread and the external thread are tightly locked together, and the anti-loosening effect of the nut is formed.

As an improvement of the embodiment, the threaded holes and the step unthreaded holes on the nut body 6 are provided with a plurality of threaded holes and step unthreaded holes which are matched with each other and are arranged along the circumferential direction. Similarly, the screw 11 is a socket head cap screw, which can save space, and the performance grade of the screw 11 is not lower than 10.9.

As a modification of the embodiment, the inner and outer tapers of the conical head part 5 are the same, the end surface of the conical head part 5 is perpendicular to the nut axis 7 of the nut body 6, and the conical head part 5 is in a circumferential shape and is cut and divided into a plurality of identical arc-shaped sub-head parts 12. The conical head 5 is deformed during tightening of the lock nut 4. As shown in fig. 1, 5, the bearing 2 applies an axial load to the plurality of sub-heads 12 of the tapered head 5, which provides a reaction force of the axial load to the bearing 2 by the lock nut 4. The axial load acts on the conical head 5, and since the acting force and the reaction force applied to the conical head 5 are distributed at different radial circumferential positions, an overturning moment is formed for each arc-shaped sub-head 12. The deformation moment of the sub-head part 12 acts on the nut main body 6, changes the thread pitch of the nut main body 6 close to the conical head part 5, is tightly combined with the external thread on the output shaft 3 to form a locking measure on the whole thread length, and can meet the bearing locking requirement of the heavy load working condition of the output shaft of the material distribution box of the paver.

One or two notches 9 are arranged on the nut body 6 along the circumferential direction, the width of the notch 9 is determined according to the size of the internal thread on the nut body 6, generally, the pitch is preferably not less than 1.5 times, and the cutting depth of the notch 9 is preferably not more than the external radius of the nut. The size of the notch 9 on the external circular surface 8 of the nut body 6 is determined according to the functional requirements of products, generally speaking, the single notch 9 is not more than 210 degrees, generally not less than 120 degrees in the circumferential direction of the external circular surface of the nut body 6; two notches with symmetrical circumference can be adopted, the effect is better, but the circumference covered by the notch 9 is preferably not more than 180 degrees.

As the improvement of the embodiment, the outer circular surface 8 of the nut main body 6 is uniformly provided with the axial grooves 13, and the axial grooves 13 divide the outer circular surface 8 into a plurality of parts, so that the nut is convenient to produce and manufacture and is used for screwing the nut.

Example 2

The utility model also provides a paver, including output shaft 3, install bearing 2 on the output shaft 3, output sprocket 1 is installed to bearing 2 outside, lock nut 4 adopts threaded connection with output shaft 3, and conical head 5 supports and leans on the terminal surface in bearing 2. The clearance control or the zero clearance control of the bearing can be ensured by controlling the nut tightening torque.

Because divide workbin output shaft bilateral symmetry to arrange, lock nut 4's screw is revolved to confirming according to the output shaft direction of rotation, can be right-handed screw, also can be left-handed screw, to the utility model discloses, the nut is mated.

The lock nut can solve the problems of part damage, complete machine halt and the like caused by looseness of the lock nut on the output shaft of the material distribution box of the paver under heavy load conditions, and has great practical significance for improving the performance of the complete machine of the paver, reducing faults, facilitating the use of users and reducing the loss of users.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims (10)

1. The utility model provides a distribution box output shaft lock nut which characterized in that, includes nut main part (6), with nut main part (6) even toper head (5) as an organic whole, nut main part (6) are equipped with coaxial centre bore with the inside of toper head (5), are equipped with continuous internal thread in interior disc (10) of nut main part (6), and the middle part of excircle face (8) is equipped with circumference notch (9).

2. A distribution box output shaft lock nut according to claim 1, characterized in that the internal and external tapers of the tapered head (5) are the same.

3. A distribution box output shaft lock nut according to claim 1, characterized in that a threaded hole is arranged axially on the nut body (6) on one side of the notch (9) near the conical head (5), and a stepped unthreaded hole is arranged on the nut body (6) on the other side of the notch (9) at a position corresponding to the threaded hole.

4. A distribution box output shaft lock nut according to claim 3, characterised in that the nut bodies (6) on both sides of the slot (9) are fastened by means of screws (11).

5. The locknut of an output shaft of a distribution box according to claim 1, characterized in that the conical head (5) is circumferential, cut and divided into a plurality of identical arcuate heads (12).

6. A bin output shaft lock nut according to claim 1, characterised in that the end surface of the conical head (5) is perpendicular to the nut axis (7) of the nut body (6).

7. A bin output shaft lock nut according to claim 1, characterised in that the notch (9) has a kerf width not less than 1.5 nut pitches.

8. The locknut of an output shaft of a distribution box according to claim 1, characterized in that the nut body (6) has axial grooves (13) uniformly distributed on the outer circumferential surface (8).

9. A paver characterized in that the paver is provided with a distribution box output shaft lock nut as claimed in any one of claims 1 to 8.

10. The paver of claim 9, characterized by comprising an output shaft (3), wherein a bearing (2) is installed on the output shaft (3), an output chain wheel (1) is installed outside the bearing (2), the lock nut (4) is in threaded connection with the output shaft (3), and the conical head (5) abuts against the end face of the bearing (2).

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