阅读说明：本技术 一种间隙可调弹性径向滑动轴承 (Elastic radial sliding bearing with adjustable clearance ) 是由 南飞艳 薛飞 耿建成 周林 王大伟 于 2020-04-30 设计创作，主要内容包括：一种间隙可调弹性径向滑动轴承,弹性轴承左右两端各开有8个缝隙；弹性轴承外圆为两个外锥面,轴承外套和轴承内套内孔均设计为内锥面,轴承外套和轴承内套通过内锥面分别与弹性轴承的外锥面配合,轴承外套和轴承内套螺纹连接；设备在装配、试车、检修及使用过程中若发现轴承与转子间隙过大,可以根据技术要求随时拧动轴承内套,对轴承内孔与转子间隙进行调整,本发明避免了因设计、使用和制造等原因造成轴承与转子(传动轴)因间隙过大而重新制作轴承的情况,具有降本增效优点；弹性缩放间隙大,可实现滑动轴承的系列化和标准化；合理的间隙调试可以最好的控制轴承转子运转时的温度与振动。(An elastic radial sliding bearing with adjustable gaps is characterized in that the left end and the right end of the elastic bearing are respectively provided with 8 gaps; the outer circle of the elastic bearing is two outer conical surfaces, inner holes of the bearing outer sleeve and the bearing inner sleeve are designed into inner conical surfaces, the bearing outer sleeve and the bearing inner sleeve are respectively matched with the outer conical surfaces of the elastic bearing through the inner conical surfaces, and the bearing outer sleeve and the bearing inner sleeve are in threaded connection; if the device finds that the clearance between the bearing and the rotor is too large in the assembling, trial run, overhaul and use processes, the inner sleeve of the bearing can be twisted at any time according to the technical requirements to adjust the clearance between the inner hole of the bearing and the rotor, and the invention avoids the condition that the bearing and the rotor (transmission shaft) are remanufactured due to the too large clearance caused by the reasons of design, use, manufacture and the like, and has the advantages of cost reduction and efficiency improvement; the elastic scaling clearance is large, and the serialization and standardization of the sliding bearing can be realized; the reasonable clearance adjustment can best control the temperature and the vibration of the bearing rotor during operation.)

1. An elastic radial sliding bearing with an adjustable gap comprises an elastic bearing (1), an outer bearing sleeve (2) and an inner bearing sleeve (3), and is characterized in that the left end and the right end of the elastic bearing (1) are respectively provided with 8 elastic gaps (1-R, 1-L), the excircle of the elastic bearing (1) is provided with two outer conical surfaces (1-RZ, 1-L Z), the inner holes of the outer bearing sleeve (2) and the inner bearing sleeve (3) are respectively designed into inner conical surfaces (2-Z,3-Z), the outer bearing sleeve (2) and the inner bearing sleeve (3) are respectively matched with the outer conical surfaces (1-RZ, 1-L Z) of the elastic bearing (1) through the inner conical surfaces (2-Z,3-Z), and the outer bearing sleeve (2) and the inner bearing sleeve (3) are in threaded connection.

2. A radial sliding bearing with adjustable clearance as claimed in claim 1, characterized in that the right side of the elastic bearing (1) is designed with 8 elastic gaps (1-R) penetrating the inner and outer circles, the left side of the elastic bearing (1) is designed with 8 gaps (1-L) penetrating the inner and outer circles, the width of the elastic gap is 1mm, and 16 elastic gaps make the elastic bearing (1) radially elastic.

3. A radial sliding bearing with adjustable clearance as claimed in claim 1, characterized in that the two ends of the outer circle of the elastic bearing (1) are respectively designed as outer conical surfaces (1-RZ, 1-L Z), one end of the outer conical surface (1-RZ) is long and has small conicity and is matched with the outer bearing sleeve (2), and the other end of the outer conical surface (1-L Z) is short and has large conicity and is matched with the inner bearing sleeve (3).

4. A sliding bearing in accordance with claim 1, characterized in that the end face of the inner bearing sleeve (3) is designed with graduation marks, and a graduation pointer (5) is fixed on the outer bearing sleeve (2).

5. A sliding bearing in accordance with claim 1, characterized in that the end face of the inner bearing sleeve (3) has 6 uniformly distributed holes and 25-grid graduation lines.

Technical Field

The invention belongs to a sliding bearing, and particularly relates to an elastic radial sliding bearing with an adjustable gap.

Background

The radial sliding bearing plays a main role in the mechanical transmission process to support the load of a rotor (transmission shaft) and ensure the stable operation of the rotor, and the precision of the bearing and the proper clearance between the inner diameter of the bearing and the rotor are key factors for the stable operation of the rotor. The following three main problems exist with respect to the radial clearance of the plain bearing at present. In the first situation, a designer calculates and designs the radial clearance of the bearing according to experience, formula software and the like, and if the clearance is too large after the whole machine is assembled, the bearing needs to be manufactured again; in the second situation, after the equipment runs for a certain period, the bearing needs to be manufactured again after the maintenance finds that the inner hole of the bearing is worn and enlarged; in the third situation, when the inner hole of the bearing is larger than the design requirement due to the error of worker operation or measurement in the bearing manufacturing process, the bearing needs to be manufactured again.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention aims to provide an elastic radial sliding bearing with adjustable clearance, the diameter of an inner hole of the bearing can be zoomed, the zooming range is 0-1.5mm, the problem of overlarge clearance between the bearing and a rotor (transmission shaft) caused by design, use, manufacture and the like can be solved, the clearance between the inner hole of the bearing and the rotor can be adjusted at any time in the assembling, debugging and using processes, and particularly, the clearance is adjusted in the trial run process to ensure that the rotor operates in a more ideal index state, so that the elastic radial sliding bearing is one of powerful guarantee factors for the stable operation of the rotor.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an elastic radial sliding bearing with adjustable clearance comprises an elastic bearing 1, an outer bearing sleeve 2 and an inner bearing sleeve 3, wherein the left end and the right end of the elastic bearing 1 are respectively provided with 8 elastic gaps 1-R, 1-L, the excircle of the elastic bearing 1 is provided with two outer conical surfaces 1-RZ, 1-L Z, the inner holes of the outer bearing sleeve 2 and the inner bearing sleeve 3 are respectively designed as inner conical surfaces 2-Z,3-Z, the outer bearing sleeve 2 and the inner bearing sleeve 3 are respectively matched with the outer conical surfaces 1-RZ, 1-L Z of the elastic bearing 1 through the inner conical surfaces 2-Z,3-Z, and the outer bearing sleeve 2 and the inner bearing sleeve 3 are in threaded connection.

The right side of the elastic bearing 1 is provided with 8 elastic gaps 1-R which penetrate through the inner circle and the outer circle, the left side of the elastic bearing 1 is provided with 8 gaps 1-L which penetrate through the inner circle and the outer circle, the width of each elastic gap is 1mm, and 16 elastic gaps enable the elastic bearing 1 to have elasticity in the radial direction.

The two ends of the excircle of the elastic bearing 1 are respectively designed into external conical surfaces 1-RZ and 1-L Z, the external conical surface 1-RZ at one end is long and has small taper and is matched with the bearing outer sleeve 2, and the external conical surface 1-L Z at the other end is short and has large taper and is matched with the bearing inner sleeve 3.

The end face of the bearing inner sleeve 3 is provided with scale marks, and the bearing outer sleeve 2 is fixed with a scale pointer 5.

The end face of the bearing inner sleeve 3 is provided with 6 uniformly distributed holes and 25-grid scale marks.

The invention has the beneficial effects that: the inner hole diameter of the elastic radial sliding bearing with the adjustable clearance can be zoomed within the range of 0-1.5 mm. If the clearance between the bearing and the rotor (transmission shaft) is too large in the assembling, trial run, overhaul and use processes of the equipment, the clearance between the inner hole of the bearing and the rotor can be adjusted at any time according to the technical requirements, and the rotor can be ensured to run in a more ideal index state during the trial run or the trial run of the equipment by adjusting the clearance. The invention avoids the condition that the bearing is remanufactured because the clearance between the bearing and the rotor (transmission shaft) is overlarge due to the reasons of design, use, manufacture and the like, and has the advantages of cost reduction and efficiency improvement; the elastic scaling clearance is large, and the serialization and standardization of the sliding bearing can be realized; the reasonable clearance adjustment can best control the temperature and the vibration of the bearing rotor during operation.

Drawings

Fig. 1 is a three-dimensional exploded view of the present invention.

Fig. 2 is a two-dimensional view of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the elastic radial sliding bearing with the adjustable gap comprises an elastic bearing 1, an outer bearing sleeve 2 and an inner bearing sleeve 3, wherein the left end and the right end of the elastic bearing 1 are respectively provided with 8 elastic gaps 1-R, 1-L with the diameter of 1mm, the elastic bearing has elasticity in the radial direction, the outer circle of the elastic bearing 1 is provided with two outer conical surfaces 1-RZ, 1-L Z, inner bores of the outer bearing sleeve 2 and the inner bearing sleeve 3 are respectively designed into inner conical surfaces 2-Z,3-Z, the outer bearing sleeve 2 and the inner bearing sleeve 3 are respectively matched with the outer conical surfaces 1-RZ, 1-L Z of the elastic bearing 1 through the inner conical surfaces 2-Z, scale marks are arranged on the end surface of the inner bearing sleeve 3, a scale pointer 5 is fixed on the outer bearing sleeve 2, the outer bearing sleeve 2 and the inner bearing sleeve 3 are connected through a thread with the thread pitch of 0.5, the outer bearing sleeve 2 is provided with a right-handed thread, the outer bearing sleeve 2 is matched with a bearing pedestal, pins are arranged through an outer locating pin hole, the outer bearing sleeve 2 and the scale pointer are used for preventing the bearing sleeve 2 and the bearing sleeve from moving relatively, a spanner, a scale mark adjusting bolt is arranged on the bearing rack of the bearing 2, a spanner, 25.6 scale marks are uniformly distributed on the bearing rack for.

Referring to fig. 2, the right side of the elastic bearing 1 is designed with 8 elastic gaps 1-R penetrating through the inner circle and the outer circle, R1 is an elastic gap penetrating part, R2 is a non-penetrating part of the edge of the elastic bearing 1, that is, the edge of the elastic bearing 1 is not provided with a gap, so as to ensure that the elastic bearing 1 is still a whole, the left side of the elastic bearing 1 is designed with 8 gaps 1-L1 penetrating through the inner circle and the outer circle as penetrating parts, L2 is a non-penetrating part of the edge, the width of the gap is 1mm, and 16 gaps enable the elastic bearing 1 to have elasticity in the radial direction.

The two ends of the excircle of the elastic bearing 1 are designed into two external conical surfaces 1-RZ and 1-L Z, wherein the external conical surface 1-RZ at one end is long and has small taper and is matched with the outer bearing sleeve 2, so that the outer bearing sleeve 2 is reliably positioned and has good strength, the external conical surface 1-L Z at the other end is short and has large taper and is matched with the inner bearing sleeve 3, so that the inner bearing sleeve 3 is relatively easy to rotate when rotating, when the outer bearing sleeve 2 is fixed, and the inner bearing sleeve 3 rotates clockwise along a thread with an inner hole pitch of 0.5, the inner hole cones of the outer bearing sleeve 2 and the inner bearing sleeve 3 are close to each other, and have an extrusion effect on the external conical surfaces at the two ends of the elastic bearing 1, so that the elastic bearing 1 has a gap with the width of 1mm at the left side and the right side, the inner hole shrinks, the shrinkage of the inner hole is 0-1.5mm, and the inner hole of the elastic bearing sleeve.

The elastic bearing 1 consists of high-quality carbon structural steel on the excircle and an inner hole tin-based alloy layer; the bearing outer sleeve 2 and the bearing inner sleeve 3 are 40-50 # high-quality carbon structural steel, and are subjected to thermal refining HB 280-320.

The working principle of the invention is as follows:

firstly, the elastic radial sliding bearing with the adjustable gap is fixed on a bearing seat or other fixing devices, and a pin is arranged at the position of an outer round pin hole of the bearing outer sleeve 2, which corresponds to the bearing seat or other fixing devices, so that the bearing outer sleeve 2 is prevented from rotating in the circumferential direction. Then, the screw A4 is withdrawn, an installation wrench is put into 6 uniformly distributed holes on the end face of the bearing inner sleeve 3 to screw the bearing inner sleeve 3, the inner hole of the elastic bearing 1 is reduced by 0.25mm when the bearing inner sleeve 3 is screwed for one circle, the scale pointer 5 is observed, the inner hole of the elastic bearing 1 is reduced by 0.01mm when the scale mark on the end face of the bearing inner sleeve 3 is moved for one grid, the size of the gap required to be reduced is determined according to the design or the trial run condition of equipment, and the bearing inner sleeve 3 is screwed to ensure that the scale pointer 5 moves for several grids correspondingly. Then, the screw 4 is fastened to lock the bearing outer sleeve 2 and the bearing inner sleeve 3, and the gap between the bearing and the rotor is prevented from changing due to the relative movement of the bearing outer sleeve 2 and the bearing inner sleeve 3 in the running process of the rotor (equipment).