CN105605097A

CN105605097A - Mechanically-adjustable-clearance semi-active radial sliding bearing

Info

Publication number: CN105605097A
Application number: CN201510941637.5A
Authority: CN
Inventors: 沈杰希; 聂周; 王小静
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-05-25

Abstract

The present invention relates to a mechanically-adjustable-clearance semi-active radial sliding bearing including a lower tile cover, a regulator, a lower tile, an upper tile, a spring, a hydraulic system and a signal acquisition system. The mechanically-adjustable-clearance semi-active radial sliding bearing has the following advantages: first, the regulator rotates to realize the radial movement of the lower tile so as to adjust a bearing relative clearance, bearing vibration can be reduced, and bearing positioning accuracy can be improved; second, a driving device of the regulator is a servo motor for driving, control precision is high, and a high torque can be achieved, so that bearing capacity is high; third, the signal acquisition system is capable of real-time acquisition of displacement and acceleration signals of the bearing, and timely feeds the signals back to the regulator after processing of the signals, so that the bearing relative clearance can be timely changed, and intelligent control of the bearing can be realized; and fourth, the lower tile and the regulator are connected by the spring to play an elastic support role, bearing damping can be increased, and the bearing vibration can be reduced.

Description

Initiatively bush(ing) bearing of machinery adjustable clearance half

Technical field

The present invention relates to initiatively bush(ing) bearing of a kind of mechanical adjustable clearance half.

Background technology

High-speed rotating machine technology is widely used in the various rotating machinery devices such as lathe, gas turbine, aero-engine, industrial compressors, in the national economy fields such as electric power, aviation, machinery, chemical industry, weaving, plays very important effect. Along with the development of industrial technology, requirement to rotating machinery is more and more higher, at a high speed, high accuracy, high load capacity be the target that rotating machinery technical development is pursued always, and sliding bearing is the critical support of rotating machinery, its performance is directly determining the success or failure of rotating machinery. Traditional bush(ing) bearing, is operated in different pivots because the mechanism of dynamic pressure carrying determines the rotor that it supports with the variation of extraneous load, rotary speed, temperature. This is very unfavorable to the high equipment of some required precisions, as high-precision grinder. Some scholars have proposed the bush(ing) bearing structure of novel passive vibration damping; as floating-ring bearing; be equivalent to add a resiliency supported on traditional plain bearing housing; and apply on high-precision grinder; there is good effectiveness in vibration suppression; but sliding bearing due to bearing arrangement itself and dynamic excitation impact, often there will be different pivots in the time of work, causes vibration and noise. Therefore ACTIVE CONTROL bearing relative gap, adjusts pivot, reduces bear vibration particularly important.

Summary of the invention

The defect existing for prior art, the object of this invention is to provide initiatively bush(ing) bearing of a kind of mechanical adjustable clearance half, carry out rotation regulator by control servomotor and realize lower watt moving radially, thereby regulate the relative gap of bearing to realize bearing vibration damping, improve antiwhip.

In order to reach above object, the technical solution used in the present invention is:

Initiatively bush(ing) bearing of a kind of mechanical adjustable clearance half, comprises lower FE Tiler, adjuster, lower watt, Shang watt, spring, hydraulic system and signal acquiring system, described lower FE Tiler and upper watt cooperation are installed fixing, and described lower watt is arranged on lower FE Tiler, described lower FE Tiler inner surface has groove, the bottom of groove has a screwed hole, and the threaded rod of described adjuster is installed wherein, and a boss is arranged at the bottom of described lower watt, this boss is arranged in the groove of lower FE Tiler, and radially distance element moves; Described spring fitting is in the groove of lower FE Tiler, and one end of spring is connected with the boss of lower watt, and the other end is connected with the top of adjuster; Described Shang watt above have fuel feed hole, be connected with hydraulic system, by the size of throttle valve control input pressure; Described hydraulic system provides lubricating oil to bearing, signal acquiring system Real-time Collection signal also feeds back to hydraulic system in time by signal, the signal feeding back for difference and the signal acquiring system of rotary load, control servomotor and carry out driving regulator rotation, by moving up and down of lower watt of frame for movement control, change the relative gap of lower half bearing and axle journal, thereby reduce amplitude and the frequency of vibration, and then the job stability of raising bearing, realize bear vibration ACTIVE CONTROL.

Described signal acquiring system comprises eddy current displacement sensor, acceleration displacement transducer, signal amplifier, signal processor, on the front end vertical direction of described lower FE Tiler, have the first hole, in lower FE Tiler and upper watt front end junction horizontal direction, have the second hole, on Shang watt front end vertical direction, have the 3rd hole, three holes are for fixing eddy current displacement sensor, lower watt of detection and main shaft are at the displacement signal of directions X and Y-direction in real time, acceleration displacement transducer is arranged on lower FE Tiler, measure in real time bear vibration situation, each sensor feeds back to host computer by the signal of detection by signal amplifier and signal processor, carry out controlled adjuster by host computer, thereby reach effectiveness in vibration suppression.

Compared with prior art, the present invention has following outstanding substantive distinguishing features and significant advantage:

The first, adjuster rotation realizes lower watt moving radially, thereby adjusts bearing relative gap, can not only reduce bear vibration, can also improve the positioning precision of bearing; The second, what the drive unit of adjuster adopted is driven by servomotor, and control accuracy is high, and can realize high pulling torque, makes bearing capacity high; The 3rd, displacement and the acceleration signal of signal acquiring system energy Real-time Collection bearing, and feed back in time adjuster after signal is processed, thus change in time bearing relative gap, realize the intellectuality control of bearing; The 4th, between lower watt and adjuster, be connected by spring, play the effect of resiliency supported, can increase bearing damp, reduce bear vibration.

Brief description of the drawings

Fig. 1 is initiatively bush(ing) bearing graphics of mechanical adjustable clearance of the present invention half.

Fig. 2 is initiatively bush(ing) bearing half sectional view of mechanical adjustable clearance of the present invention half.

Fig. 3 is lower FE Tiler structure three-dimensional figure of the present invention.

Fig. 4 is adjuster of the present invention, spring, the lower watt of three's of company connection intention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

As shown in Figures 1 to 4, initiatively bush(ing) bearing of a kind of mechanical adjustable clearance half, comprise lower FE Tiler 1, adjuster 2, lower watt 3, Shang watt 4, spring 5, hydraulic system and signal acquiring system, described lower FE Tiler 1 and upper watt 4 cooperations are installed fixing, described lower watt 3 is arranged on lower FE Tiler 1, and described lower FE Tiler 1 inner surface has groove, and the bottom of groove has a screwed hole, the threaded rod of described adjuster 2 is installed wherein, a boss is arranged at the bottom of described lower watt 3, and this boss is arranged in the groove of lower FE Tiler 1, and radially distance element moves; Described spring 5 is arranged in the groove of lower FE Tiler 1, and one end of spring 5 is connected with the boss of lower watt 3, and the other end is connected with the top of adjuster 2; Described Shang watt 4 above have fuel feed hole 9, be connected with hydraulic system, by the size of throttle valve control input pressure; Described hydraulic system provides lubricating oil to bearing, signal acquiring system Real-time Collection signal also feeds back to hydraulic system in time by signal, the signal feeding back for difference and the signal acquiring system of rotary load, control servomotor carrys out driving regulator 2 and rotates, by moving up and down of lower watt 3 of frame for movement control, change the relative gap of lower half bearing 3 and axle journal, thereby reduce amplitude and the frequency of vibration, and then the job stability of raising bearing, realize bear vibration ACTIVE CONTROL.

Described signal acquiring system comprises eddy current displacement sensor, acceleration displacement transducer, signal amplifier, signal processor, on the front end vertical direction of described lower FE Tiler 1, have the first hole 6, in lower FE Tiler 1 and upper watt front end junction horizontal direction of 4, have the second hole 7, on Shang watt front end vertical direction of 4, have the 3rd hole 8, three holes are for fixing eddy current displacement sensor, lower watt 3 of detection and main shaft are at the displacement signal of directions X and Y-direction in real time, acceleration displacement transducer is arranged on lower FE Tiler 1, measure in real time bear vibration situation, each sensor feeds back to host computer by the signal of detection by signal amplifier and signal processor, carry out controlled adjuster 2 by host computer, thereby reach effectiveness in vibration suppression.

Claims

1. initiatively bush(ing) bearing of a mechanical adjustable clearance half, comprise lower FE Tiler (1), adjuster (2), lower watt (3), Shang watt (4), spring (5), hydraulic system and signal acquiring system, it is characterized in that: described lower FE Tiler (1) and upper watt (4) cooperation are installed fixing, described lower watt (3) are arranged on lower FE Tiler (1), described lower FE Tiler (1) inner surface has groove, the bottom of groove has a screwed hole, the threaded rod of described adjuster (2) is installed wherein, a boss is arranged at the bottom of described lower watt (3), this boss is arranged in the groove of lower FE Tiler (1), radially distance element moves, described spring (5) is arranged in the groove of lower FE Tiler (1), and one end of spring (5) is connected with the boss of lower watt (3), and the other end is connected with the top of adjuster (2), described Shang watt (4) have fuel feed hole (9) above, are connected, by the size of throttle valve control input pressure with hydraulic system, described hydraulic system provides lubricating oil to bearing, signal acquiring system Real-time Collection signal also feeds back to hydraulic system in time by signal, the signal feeding back for difference and the signal acquiring system of rotary load, control servomotor and carry out driving regulator (2) rotation, by moving up and down of frame for movement control lower watt (3), change the relative gap of lower half bearing (3) and axle journal, thereby reduce amplitude and the frequency of vibration, and then the job stability of raising bearing, realize bear vibration ACTIVE CONTROL.

2. initiatively bush(ing) bearing of mechanical adjustable clearance according to claim 1 half, is characterized in that: described signal acquiring system comprises eddy current displacement sensor acceleration displacement transducer, signal amplifier, signal processor, on the front end vertical direction of described lower FE Tiler (1), have the first hole (6), in the front end junction horizontal direction of lower FE Tiler (1) and upper watt (4), have the second hole (7), on the front end vertical direction of Shang watt (4), have the 3rd hole (8), three holes are for fixing eddy current displacement sensor, detect in real time lower watt (3) and the main shaft displacement signal in directions X and Y-direction, acceleration displacement transducer is arranged on lower FE Tiler (1), measure in real time bear vibration situation, each sensor feeds back to host computer by the signal of detection by signal amplifier and signal processor, carry out controlled adjuster (2) by host computer, thereby reach effectiveness in vibration suppression.