CN213685000U

CN213685000U - Anti-drop spacer bush

Info

Publication number: CN213685000U
Application number: CN202022642105.0U
Authority: CN
Inventors: 姜涛
Original assignee: Chengdu Huixin Bochuang Machinery Co ltd
Current assignee: Chengdu Huixin Bochuang Machinery Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-13
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to an anticreep spacer, including the sleeve, fastening hoop and wear-resisting cover, wear-resisting cover is cylindricly, wear-resisting cover's length is less than telescopic length, wear-resisting ways is established in the sleeve, fastening hoop comprises two semicircle rings and bolt, two semicircle ring tip is provided with the bolt hole, the bolt runs through the bolt hole butt joint is two semicircle ring, two sets fastening hoop is established side by side the cover is established telescopic both ends, telescopic tip is provided with the scarf, be provided with the recess on the telescopic outer peripheral face, the recess is followed telescopic axial direction extends. The utility model discloses utilize wear-resisting cover interference fit between sleeve and transmission shaft, improve frictional force between sleeve and the transmission shaft to use the fastening hoop to press from both sides tight sleeve, prevent to take place relative rotation between sleeve and the transmission shaft, avoid the sleeve to drop from the transmission shaft.

Description

Anti-drop spacer bush

Technical Field

The utility model relates to a mechanical assembly part technical field especially relates to an anticreep spacer.

Background

The spacer (also called gasket) is a mechanical seal between two objects, and is usually used to prevent pressure, corrosion, and leakage, loosening, etc. of the pipeline caused by natural expansion and contraction. Since the machined surface may not be perfect, irregularities can be filled using spacer sleeves. However, when the existing spacer bush is used as a bearing filling piece to be installed on a transmission shaft, the spacer bush and the rotating shaft are easy to rotate relatively after a long time, so that the installation position of the bearing is changed and seriously, and even the bearing can fall off.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a slip-off preventing spacer for a conventional spacer and a transmission shaft, which are likely to slip relative to each other and fall off.

The utility model provides an anticreep spacer, includes the sleeve, fastening hoop and wear-resisting cover, wear-resisting cover is cylindricly, wear-resisting cover's length is less than telescopic length, wear-resisting ways is established in the sleeve, fastening hoop comprises two semicircle rings and bolt, two semicircle ring tip is provided with the bolt hole, the bolt runs through the bolt hole butt joint is two semicircle ring, two sets fastening hoop is established side by side the telescopic both ends, telescopic tip is provided with the scarf, be provided with the recess on the telescopic outer peripheral face, the recess is followed telescopic axial direction extends.

Preferably, inner ring grooves are formed in inner ring surfaces of two ends of the sleeve, and the inner ring grooves are adjacent to the end portions of the wear-resistant sleeves.

Preferably, the sleeve end is further provided with an opening, and the opening is communicated with the inner annular groove.

Preferably, the inner ring groove is a V-shaped groove.

Preferably, the wear-resistant sleeve is made of a modified nylon material.

The utility model discloses an useful part lies in: 1. the wear-resistant sleeve is in interference fit between the sleeve and the transmission shaft, so that the friction force between the sleeve and the transmission shaft is improved, and the sleeve is clamped by the fastening hoop, so that the sleeve and the transmission shaft are prevented from rotating relatively, and the sleeve is prevented from falling off from the transmission shaft; 2. the outer peripheral surface of the sleeve is provided with a groove, the groove is clamped with the inner ring surface of the bearing, the inner ring of the bearing is prevented from rotating on the sleeve, the bearing is clamped by fastening hoops at two ends of the sleeve, and the bearing is prevented from axially sliding on the sleeve.

Drawings

FIG. 1 is a perspective view of an anti-separation spacer according to an embodiment;

fig. 2 is a schematic view of an assembly structure of an anti-dropping spacer.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" 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 represent the only embodiments.

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 herein in the description of the invention 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. 1-2, an anticreep spacer bush, including sleeve 1, fastening hoop 2 and wear-resisting cover 3, wear-resisting cover 3 is cylindricly, the length of wear-resisting cover 3 is less than sleeve 1's length, wear-resisting cover 3 cover is established in sleeve 1, fastening hoop 2 comprises two semicircle rings 21 and bolt 22, two semicircle ring 21 tip is provided with bolt hole 211, bolt 22 runs through bolt hole 211 docks two semicircle rings 21, two sets fastening hoop 2 is established side by side sleeve 1's both ends, sleeve 1's tip is provided with chamfer 11, be provided with recess 12 on sleeve 1's the outer peripheral face, recess 12 is followed sleeve 1's axial direction extends. Specifically, in this embodiment, the wear-resistant sleeve 3 is made of a modified nylon material, and the wear-resistant sleeve 3 made of the modified nylon has a high thermal deformation temperature, a large use temperature range, a small thermal expansion coefficient, high strength, wear resistance, fatigue resistance, excellent corrosion resistance, and a long service life. During the equipment, establish wear-resisting cover 3 cover in sleeve 1, with transmission shaft 100 butt, improve the frictional force between sleeve 1 and the transmission shaft 100, prevent that sleeve 1 from rotating relative transmission shaft 100. Further, two fastening bands 2 are disposed at both ends of the sleeve 1, and a gap is disposed between the two fastening bands 2 for mounting a bearing (not shown in the drawings), and it can be understood that both ends of the bearing abut against the side surfaces of the two fastening bands 2, so that the bearing is prevented from moving in the axial direction of the transmission shaft 100. When the fastening hoop 2 is installed by an operator, the bolt 22 penetrates through the bolt hole 211, the two semicircular rings 21 are tightly held on the periphery of the sleeve 1, the connection strength between the sleeve 1 and the transmission shaft 100 is improved, and the sleeve 1 is prevented from being separated from the transmission shaft 100 and falling off. It should be noted that, after a fastening hoop 2 is installed, an operator sleeves the bearing on the sleeve 1, and in order to facilitate the sleeve to install the bearing, the end of the sleeve 1 is provided with a chamfer angle 11, so that the end of the sleeve 1 is prevented from abutting against the inner ring of the bearing, and the assembly difficulty is reduced. It should be noted that, in order to prevent the bearing from rotating in the circumferential direction of the sleeve 1, a groove 12 is provided on the outer circumferential surface of the sleeve 1, a protrusion is correspondingly provided on the inner ring of the bearing, and the protrusion is correspondingly clamped in the groove 12, so that the bearing can be prevented from rotating relative to the sleeve 1. The utility model discloses a spacer has avoided the time bearing of a specified duration to become flexible at transmission shaft 100 and drop even, has improved the joint strength between bearing and the transmission shaft.

As shown in fig. 1-2, inner annular grooves 13 are formed in inner annular surfaces of two ends of the sleeve 1, and the inner annular grooves 13 are adjacent to the end portions of the wear-resistant sleeves 3. Specifically, set up inner ring groove 13 on the interior anchor ring of sleeve 1 tip, because wear-resisting cover 3 is that the direct cover is established on

transmission shaft

100, and 3 tip of wear-resisting cover and 13 butts of inner ring groove, transmission shaft 100 is at the course of the work, and adnexed greasy dirt etc. can be deposited in inner ring groove 13 on it, utilize inner ring groove 13 to hold the greasy dirt, avoid the greasy dirt to directly fill in the clearance between wear-resisting cover 3 and transmission shaft 100, improve wear-resisting cover 3's installation positioning accuracy.

As shown in fig. 1-2, an opening 14 is further provided at an end of the sleeve 1, and the opening 14 is communicated with the inner annular groove 13. Specifically, the opening 14 communicating with the inner annular groove 13 communicates with the inner annular groove 13 through the opening 14, and when the drive shaft 100 rotates, oil dirt and the like enter the inner annular groove 13 through the opening 14 and are stored.

As shown in fig. 2, the inner annular groove 13 is a V-groove.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an anticreep spacer which characterized in that: including the sleeve, fastening hoop and wear-resisting cover, wear-resisting cover is cylindricly, wear-resisting cover's length is less than telescopic length, wear-resisting cover is established in the sleeve, fastening hoop comprises two semicircle rings and bolt, two the semicircle ring tip is provided with the bolt hole, the bolt runs through the bolt hole butt joint is two the semicircle ring, two sets fastening hoop is established side by side the telescopic both ends, telescopic tip is provided with the scarf, be provided with the recess on the telescopic outer peripheral face, the recess is followed telescopic axial direction extends.

2. The anti-separation sleeve as claimed in claim 1, wherein: inner ring grooves are arranged on inner ring surfaces at two ends of the sleeve, and the inner ring grooves are adjacent to the end parts of the wear-resistant sleeves.

3. The anti-separation sleeve as claimed in claim 2, wherein: the sleeve end is also provided with an opening which is communicated with the inner annular groove.

4. The anti-separation sleeve as claimed in claim 3, wherein: the inner ring groove is a V-shaped groove.

5. The anti-separation sleeve as claimed in claim 1, wherein: the wear-resistant sleeve is made of a modified nylon material.