KR200484339Y1

KR200484339Y1 - Apparatus for withdrawing sheave bearing

Info

Publication number: KR200484339Y1
Application number: KR2020150005436U
Authority: KR
Inventors: 김수겸; 이상재; 김종우
Original assignee: 주식회사 한국가스기술공사
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2017-08-25
Also published as: KR20170000690U

Abstract

The sheave bearing take-out apparatus 100 according to the present invention is constructed such that the cap draw-out bar 140 and the ball draw-out bar 150 are rotatably coupled to the elevation bar 130 about the first and second hinges 161 and 162 And the secondary part (bearing ball 230) can be taken out immediately after the primary part (bearing cap 240) is taken out, thereby making it possible to drastically reduce the unnecessary working time at the time of high-altitude work.

Description

[0001] Apparatus for withdrawing sheave bearing [0002]

The present invention relates to a device for taking out a sheave bearing used in an unlocking arm of an LNG plant, and more particularly, to a sheave bearing take-out device for easily and easily separating a bearing ball and a bearing cap from a bearing body.

In general, heavy equipment such as cranes, various industrial cranes, and land or water handling equipment are moved by using wire rope and winch drums.

At this time, the wire rope is wound through several sheaves and acts as a force for lifting the heavy object according to the principle of the pulley.

For example, a rotary part of a shoe structure, which is a rotating body adopted for an unloading arm of an LNG facility, is a representative example.

The unloading arm is a facility to unload the fluid by connecting the ship side and the shore side with a mechanical structure. The unloading arm is operated as a remote control device considering the position of the ship and the flange connection position.

In order to operate the structure on the heavy object, the power by the hydraulic device is transferred to the driving wire by the hydraulic cylinder and the weight is operated up, down, left, and right. In this case, Sheave is installed.

A plurality of ball bearings are required to support and rotate a heavy load, especially in a heavy load, and it is required to regularly check the condition of the bearing in order to maintain smooth operation of the sheave structure.

In general, when checking the condition of sheave bearing, the bearing cap is first taken out and the bearing ball is drawn out to check the condition of the bearing ball and ball race. In the bearing cap, And it takes a long time to remove it due to foreign substances such as dust and rain water. Also, the bearing ball is not easily drawn out by grease for greasing.

As disclosed in Korean Patent Laid-Open Publication No. 10-2012-0019587, entitled " Ball Bearing Retrieval Device ", published on Mar. 07, 2012, the support shaft of the ball bearing, A reaction plate that is mounted on an upper portion of the hydraulic ram and is vertically moved by hydraulic operation; a plurality of actuators And the lower end of each actuating rod 30 and is formed into a spherical shape and reduced in outer diameter so as to be inserted into the space between the outer ring and the inner ring of the ball bearing, And has an insertion port formed therein.

In addition, the status of the sheave bearings is increased due to the nature of the cargo arm, which increases the work time during the work of the elevator, which increases the worker's fatigue level and increases the safety risk of the worker there was.

Accordingly, there is a demand for an unloading arm dedicated sheave bearing dedicated drawing device for shortening the working time and checking the safety state.

Korean Patent Laid-Open Publication No. 10-2012-0019587 "Ball Bearing Drawing Device" (Open date: Mar. 07, 2012)

It is an object of the present invention to provide a sheave bearing take-out apparatus which can easily and easily take out a bearing cap and a bearing ball.

According to another aspect of the present invention, there is provided a bearing apparatus comprising: a bearing body having a bearing race; a bearing ball having a plurality of metal members rolling on the bearing race; and a bearing cap having a bearing cap for preventing a deviation of the bearing ball from the bearing cap. A drawing device for drawing a bearing ball,

A fixed support having a lower end fixed to the bearing body,

A guide block fixed to an upper end of the fixed support,

A lifting bar that is coupled to the guide block in a vertically movable manner,

A cap withdrawal rod whose one end is rotatably coupled to the lower end of the lifting rod by a first hinge and whose other end is screwable to the bearing cap,

And a ball withdrawal rod having one end rotatably coupled to a lower end of the lifting rod by a second hinge and a magnet for attaching the bearing ball to the other end,
The cap withdrawal rod is screwed to the bearing cap by the descending rotation of the lifting rod, and the cap withdrawing rod that is screwed to the bearing cap is lifted and lowered by the lifting and lowering of the lifting rod, and the bearing cap is separated and drawn out from the sheave bearing .

Further, in the present invention, the elevating rod is screwed to the guide block and is elevated while being screwed.

The device 100 of the present invention is configured such that the cap draw-out bar 140 and the ball draw-out bar 150 are rotatably coupled to the elevation bar 130 around the first and second hinges 161 and 162, The second component (bearing ball 230) can be taken out immediately after the component (bearing cap 240) is taken out, thereby making it possible to drastically reduce unnecessary operation time in the high-altitude operation.

Fig. 1 is a front view showing the inventive drawing device,
Fig. 2 is a side view of Fig. 1,
3 is a schematic view for explaining a drawing state of the bearing cap,
4 is a schematic view for explaining a drawing state of a bearing ball;

The sheave bearing take-off device of the present embodiment allows a bearing cap and a bearing ball to be easily and easily drawn out.

1 to 4 showing the sheave bearing take-out apparatus 100 of the present embodiment, the bearing body 210 having the bearing race 220 and the plurality of metal members rolling over the bearing race 220 The bearing cap 230 and the bearing ball 230 can be easily taken out from the sheave bearing 200 having the bearing ball 230 and the bearing cap 240 for preventing the bearing ball 230 from being separated. do.

The drawing device 100 of the present embodiment includes a fixed support 110 to which a lower end is fixed to the bearing body 210, a guide block 120 fixed to an upper end of the fixed support 110, A first hinge 161 rotatably coupled to a lower end of the elevating bar 130 and a second end rotatably coupled to the bearing cap 240, A magnet 151 which is rotatably coupled to the lower end of the elevating rod 130 by a second hinge 162 and which is attached to the bearing ball 230 at the other end, And a ball pull-out bar 150 formed on the base plate.

The elevating bar 130 is screwed to the guide block 120 and is elevated while being screwed. The operator can manually elevate the elevating bar 130 to elevate the elevating bar 130, and elevate the elevating bar 130 by electric power.

A screw tab 241 is formed in the bearing cap 240 and a male screw portion is screwed to the screw tab 241 at an end of the cap lead rod 140.

The magnet 151 has an arc surface corresponding to the shape of the bearing ball 230.

As shown in FIGS. 1 and 2, the drawing device having the above-described structure fixes the fixed support 110 to the bearing body 210.

3, the cap take-off rod 140 is rotated about the first end hinge 161 of the ascending / descending bar 130 so as to be in line with the ascending / descending bar 130, The worker rotates clockwise so that the end of the lifting rod 130 is screwed into the screw tab 241 of the bearing cap 240.

The bearing cap 240 is detached from the sheave bearing 200 while rotating the elevating bar 130 counterclockwise.

At this time, the guide block 120 and the elevating bar 130 are slidably engaged to lift the elevating bar 130 by the force of the operator, thereby drawing out the bearing cap 240.

4, after the bearing cap 240 is drawn out as described above, the cap lead rod 140 is rotated about the first hinge 161 to be supported by the elevating rod 130, The ball lead rod 150 is rotated downward about the second hinge 162.

Then, after the bearing balls 230 are attached to the magnets 151 by the magnetic force of the magnets 151, the elevating rods 130 are lifted and the bearing balls 230 are drawn out.

In the drawing apparatus 100 having the above-described structure, the cap draw-out bar 140 and the ball draw-out bar 150 are rotatably coupled to the elevation bar 130 about the first and second hinges 161 and 162 And the secondary part (bearing ball 230) can be taken out immediately after the primary part (bearing cap 240) is taken out, thereby making it possible to drastically reduce the unnecessary working time at the time of high-altitude work.

100: drawing device 110: fixed support
120: guide block 130:
140: Cap Drawing Rod 150: Ball Drawing Rod
161, 162: first and second hinges

Claims

A bearing body 210 having a bearing race 220 and a plurality of metallic bearing balls 230 rolling on the bearing race 220 and a bearing cap 240 The bearing device according to any one of claims 1 to 3, wherein the bearing cap (200)
A fixing support 110 for fixing a lower end of the bearing body 210,
A guide block 120 fixed to the upper end of the fixed support 110,
A lifting bar 130 coupled to the guide block 120 so as to be movable up and down,
One end of which is rotatably coupled to the lower end of the elevating bar 130 by a first hinge 161 and the other end is screwed into the bearing cap 240,
One end of which is rotatably coupled to the lower end of the lifting rod 130 by a second hinge 162 and the other end of which is coupled with a magnet 151 for attaching the bearing ball 230 In addition,
The cap withdrawing rods 140 are screwed to the bearing caps 240 by the descending rotation of the raising and lowering rods 130. The cap withdrawing rods 140 threadedly engaged with the bearing caps 240 are screw- And the bearing cap (240) is lifted up and down from the sheave bearing (200) by lifting and lowering the steel rod (130).

2. The shift bearing lifter according to claim 1, wherein the elevating rod (130) is screwed to the guide block (120) and is lifted and lowered while being screwed.