CN210536452U

CN210536452U - A shaft lifting mechanism for replacing a sliding bearing bush is arranged on a motor bearing seat

Info

Publication number: CN210536452U
Application number: CN201921400776.7U
Authority: CN
Inventors: 马晓勇; 马丽; 成玲燕; 魏雨谷; 李国卿
Original assignee: CSIC Electrical Machinery Science and Technology Co Ltd
Current assignee: CSIC Electrical Machinery Science and Technology Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-15
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a set up the axle mechanism that lifts that is used for changing slide bearing axle bush on the motor bearing frame, solved and how to lift the problem that the motor axle head realized changing the axle bush under the place environment that does not possess installation jacking equipment. The lifting device comprises a motor base (1), an end cover (2) and a lower bearing seat (3) are respectively arranged on the motor base (1), a lower bearing bush (4) is arranged in the lower bearing seat (3), a motor rotating shaft (5) is arranged on the lower bearing bush (4), a left side cantilever beam (6) and a right side cantilever beam (7) are respectively and fixedly arranged on the outer side surface of the lower bearing seat (3), a linear shaft end lifting frame (10) capable of ascending or descending through a rotary pull-up bolt is arranged between the two cantilever beams, and lifting of a shaft end is achieved. The lifting mechanism and the motor base are integrally arranged, so that other space is not occupied, and the lifting mechanism is convenient to use and free to disassemble.

Description

A shaft lifting mechanism for replacing a sliding bearing bush is arranged on a motor bearing seat

Technical Field

The utility model relates to a lift a mechanism, in particular to can lift up the mechanism of motor shaft with motor frame integration setting.

Background

The stator and the rotor of the generator realize the operation function of one rotation of the stator and the rotor through the bearing, the adopted bearing has two structural types of a rolling bearing and a sliding bearing, wherein the sliding bearing is in clearance fit with the shaft neck of a rotor shaft of the generator, when the generator normally operates, an oil inlet pipe of the sliding bearing supplies oil, and when the rotor operates to reach a certain rotating speed, a thin and stable oil film is formed between the bearing bush and the shaft neck to play a role in separating the stator and the rotor, so that the friction damage caused by the direct contact of the bearing bush and the shaft neck is avoided; in addition, in the process of the turnover transportation of the generator, sufficient lubricating oil is not filled in the bearing chamber, and an oil film cannot be formed between the bearing bush and the journal when the rotor does not rotate, so that the rotor bearing journal and the bearing bush are easily abraded or collided to cause damage, the vibration of the motor in the later operation is increased, and the service life is shortened; the existing sliding bearing motor is characterized in that a sliding bearing seat is formed by connecting an upper bearing seat and a lower bearing seat together, a bearing bush in the bearing seat is also formed by connecting an upper half bearing bush and a lower half bearing bush through bolts, when the motor is used and repaired and replaced, the upper bearing seat is firstly disassembled, then the upper half bearing bush is disassembled, then a rotor end of the disassembled bearing bush end is jacked or hoisted for a certain height through a jacking or suspending mechanism, the lower bearing bush is released from being pressed by a shaft neck, and the lower bearing bush is rotated to slide out of the bearing seat, so that the replacement of the lower bearing bush is completed; the motor uses the scene, because environmental condition restriction such as place, especially when the generator is installed in the dress boats and ships, the scene lacks hoisting equipment, does not possess the place environment of installation jacking equipment yet, causes the axle bush to dismantle unable going on.

Disclosure of Invention

The utility model provides a set up the axle mechanism that lifts that is used for changing slide bearing axle bush on the motor bearing seat, solved and how to lift electric motor rotor and realize changing the technical problem of axle bush under the place environment that does not possess installation jacking equipment.

The utility model discloses a solve above technical problem through following technical scheme:

a shaft lifting mechanism for replacing a sliding bearing bush is arranged on a motor bearing block and comprises a motor base, an end cover and a lower bearing block are respectively arranged on the motor base, a lower bearing bush is arranged in the lower bearing block, a motor rotating shaft is arranged on the lower bearing bush, a left cantilever beam and a right cantilever beam are respectively and fixedly arranged on the outer side surface of the lower bearing block, a left pull-up bolt passing upper screw hole is arranged on the left cantilever beam, a right pull-up bolt passing upper screw hole is arranged on the right cantilever beam, a linear shaft end lifting frame is arranged below the shaft end of the motor rotating shaft, a left pull-up bolt passing lower screw hole is arranged at the left end of the linear shaft end lifting frame, a right pull-up bolt passing lower screw hole is arranged at the right end of the linear shaft end lifting frame, the left pull-up bolt sequentially passes through the left pull-up bolt from bottom to top and passes through the lower screw hole and the left pull, the right side pull-up bolt sequentially penetrates through the right side pull-up bolt from bottom to top, penetrates through the lower screw hole and the upper screw hole and then is in threaded connection with a nut at the upper end of the right side.

The anti-rotation clamp is characterized in that an anti-rotation clamp left end fixing bolt and an anti-rotation clamp right end fixing bolt are arranged on the linear shaft end lifting frame respectively, the anti-rotation clamp is connected between the anti-rotation clamp left end fixing bolt and the anti-rotation clamp right end fixing bolt in a swinging mode and is used for swinging the anti-rotation clamp, and the anti-rotation clamp is fastened on the shaft end of the motor rotating shaft in a swinging mode.

The utility model discloses set up climbing mechanism on the step, make a font axle head lifting frame lift up the tip of motor shaft through rotatory pull-up bolt, realized the separation of rotor with the step, conveniently change the step-out, lifting mechanism and motor cabinet integration set up, do not occupy other spaces, do not influence the normal use of generator, and convenient to use dismantles freely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a matching relationship diagram between the linear shaft end lifting frame 10 and the lower bearing seat in the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

the utility model provides a set up axle lifting mechanism that is used for changing slide bearing axle bush on motor bearing frame, including motor frame 1, be provided with end cover 2 and step 3 on motor frame 1 respectively, be provided with step 4 in step 3, be provided with motor shaft 5 on step 4, fixed left side cantilever beam 6 and the right side cantilever beam 7 of being provided with respectively on the lateral surface of step 3, it passes last screw 8 to be provided with left side jack-up bolt on left side cantilever beam 6, it passes last screw 13 to be provided with right side jack-up bolt on right side cantilever beam 7, be provided with in-line axle head lifting frame 10 below the axle head of motor shaft 5, it passes down screw 11 to be provided with left side jack-up bolt at the left end of in-line axle head lifting frame 10, it passes down screw 15 to be provided with right side jack-up bolt at the right-hand member of in-line axle head lifting frame 10, left side jack-up bolt 9 passes left side jack-up bolt from the bottom to top in proper order The rear part is screwed with the left upper end nut 12, and the right pull-up bolt 14 sequentially penetrates through the right pull-up bolt from bottom to top and penetrates through the lower screw hole 15 and the upper screw hole 13 to be screwed with the right upper end nut 16.

An anti-rotor shaking hoop left end fixing bolt 18 and an anti-rotor shaking hoop right end fixing bolt 19 are respectively arranged on the linear shaft end lifting frame 10, an anti-rotor shaking hoop 17 is connected between the anti-rotor shaking hoop left end fixing bolt 18 and the anti-rotor shaking hoop right end fixing bolt 19, and the anti-rotor shaking hoop 17 is tightly hooped on the shaft end of the motor rotating shaft 5; in the motor transportation process, the hoop 17 is rocked to the fixed anti-rotation rotor of accessible and plays the effect of preventing motor rotor from rocking.

Claims

1. A shaft lifting mechanism for replacing a sliding bearing bush is arranged on a motor bearing seat, and comprises a motor base (1), an end cover (2) and a lower bearing seat (3) are respectively arranged on the motor base (1), a lower bearing bush (4) is arranged in the lower bearing seat (3), a motor rotating shaft (5) is arranged on the lower bearing bush (4), the shaft lifting mechanism is characterized in that a left cantilever beam (6) and a right cantilever beam (7) are respectively and fixedly arranged on the outer side surface of the lower bearing seat (3), a left pull-up bolt passing upper screw hole (8) is arranged on the left cantilever beam (6), a right pull-up bolt passing upper screw hole (13) is arranged on the right cantilever beam (7), a linear shaft end lifting frame (10) is arranged below the shaft end of the motor rotating shaft (5), a left pull-up bolt passing lower screw hole (11) is arranged at the left end of the linear shaft end lifting frame (10), the right end of the straight-line-shaped shaft end lifting frame (10) is provided with a right-side pull-up bolt which penetrates through a lower screw hole (15), the left-side pull-up bolt (9) sequentially penetrates through the left-side pull-up bolt from bottom to top and penetrates through a lower screw hole (11) and the left-side pull-up bolt penetrates through an upper screw hole (8) and then is in threaded connection with a left-side upper end nut (12), and the right-side pull-up bolt (14) sequentially penetrates through the right-side pull-up bolt from bottom to top and penetrates through the lower screw hole (15) and the right-side pull-up bolt penetrates through an upper screw hole.

2. The shaft lifting mechanism for replacing the bearing bush of the sliding bearing is arranged on the bearing seat of the motor according to claim 1, and is characterized in that a rotor-rotation preventing shaking hoop left end fixing bolt (18) and a rotor-rotation preventing shaking hoop right end fixing bolt (19) are respectively arranged on the linear shaft end lifting frame (10), a rotor-rotation preventing shaking hoop (17) is connected between the rotor-rotation preventing shaking hoop left end fixing bolt (18) and the rotor-rotation preventing shaking hoop right end fixing bolt (19), and the rotor-rotation preventing shaking hoop (17) is tightly hooped on the shaft end of the motor rotating shaft (5).