KR200198653Y1 - Jig for seperating bearing from roll - Google Patents

Abstract

The present invention relates to a roll bearing disassembly jig which can be disassembled very quickly, simply and safely by a hydraulic jack with a bearing block mounted on a bearing mounted for rotational support of a roll.

The vertical walls 32 and 34 integrally fixed to the upper part of the bottom plate 20, which are equipped with wheels 22, to be movable and spaced apart from each other at a predetermined interval, are integrally fixed. Stoppers 36 and 38 are mounted to be inserted up and down at both ends of the space formed therebetween, and the stopper 36 is a semi-circular cross section hydraulic jack receiving device 50 for placing the hydraulic jack 60 on the inner center thereof. Movement in a direction away from the other stoppers 38 is restricted by the partition walls 40 provided and fixed on the inner surface of the vertical walls 32 and 34, and the stoppers 38 are vertical walls 32. Not only the movement in the direction away from the other stopper 36 by the protrusion plate 42 provided on the inner surface of the (34) is limited, of course, the stopper 38 can pass through the roll shaft while the groove is open Forming 43, the hydraulic jack 60 is mounted on the hydraulic jack receiving device 50 is a hydraulic jack It is characterized in that the hydraulic pressure is provided by the pump (64).

Description

Jig for Roll Bearing Disassembly

The present invention relates to a jig for disassembling a bearing mounted for rotational support of a roll from a roll. More specifically, the bearing mounted on a roll shaft is disassembled by a hydraulic jack very quickly, simply and safely with a bearing block mounted. A jig for dismantling roll bearings is described.

In general, rolls having various specifications and shapes are used in the general industry, in particular, in cold rolling mills of steel making facilities, and rolling bearings, etc., are formed at both ends so that rotational rotation of these rolls is more stable and accurate. This bearing is worn out due to the impact load and rolling fatigue, etc., or the indentation is generated on the raceway surface, and the lubricant is deteriorated.

At this time, since the bearing is made of strong material and processed with high precision, it is fixed to the roll shaft due to deformation and deterioration of lubricant when it is mounted on the roll and needs to be replaced. Therefore, the hydraulic tool and jig provided separately are provided. The bearing disassembly is performed by.

1 shows a method of disassembling the bearing from the roll shaft by using a conventional bearing disassembly jig, which is maintained in a stable state by placing the roll 110 disassembled from the equipment on a support not shown. The bearing 120 mounted on the shaft 112 at both ends of the roll 110 using the jig 130 is disassembled from the shaft 112.

The conventional bearing disassembly jig 130 is connected to the hydraulic puller pump 132 through a hydraulic puller pump 132 for generating hydraulic pressure and a hose 134 to the pump 132. Hydraulic puller 138 having a puller shaft 136 to receive and advance the hydraulic pressure generated by the hydraulic force, and a plurality of the hydraulic puller 138 is provided with a plurality of forceps 140 bent so that the front end portion to bite the bearing 120 Is done.

That is, in order to disassemble the bearing using the conventional jig 130, first disassemble the bearing block that surrounds and supports the outside of the bearing 120, and then each end of the tongs 140 of the bearing 120 The outer surface portion is positioned to be watered, the puller shaft 136 is fixed to be located at the center of the roll shaft 112, and then the hydraulic puller pump 132 is driven. When the hydraulic puller pump 132 is driven in this way, the hydraulic pressure generated thereby is supplied to the hydraulic puller 138 through the hose 134, so that the puller shaft 136 of the hydraulic puller 138 moves forward and the bearing 120 is moved. ) Can be disassembled from the roll shaft 112.

By the way, in the conventional bearing disassembly method using the jig 130, one worker adjusts the puller shaft 136 to fix it in the center of the roll shaft 112, the other worker tongs 140 ) Assists to bite the bearing 120, another worker is to disassemble the bearing by operating the hydraulic puller pump 132, which requires a number of operators to reduce the work efficiency It is.

In addition, when the puller shaft 136 moves forward while the jig 130 is mounted on the roll shaft 112, the jig 130 may move in the roll shaft ( Since the puller shaft 136 is deviated from the center position of the roll shaft 112 due to the unstable mounting of the jig 130, the jig 130 does not operate normally, and a concentrated load is applied to the tip of the tong 140. There was a problem that the risk of safety accidents such as being damaged or the components of the jig 130 are thrown off and hit the worker.

The present invention is to solve such a conventional problem, the replacement of the bearing mounted on the roll shaft can be disassembled more easily and quickly, the roll is made to replace the stable operation to eliminate the risk of safety accident The purpose is to provide a jig for bearing disassembly.

1 is a schematic configuration diagram showing a jig for disassembling the roll bearing according to the prior art

Figure 2 is a schematic configuration diagram showing a jig for disassembling the roll bearing according to the present invention.

Explanation of symbols on the main parts of the drawings

20 ... bottom plate

22 ... wheels

32,34 ... vertical wall

36,38 ... stopper

40 ... bulkhead

42 ... protrusions

50 ... Hydraulic Jack Receptacle

60 ... Hydraulic Jack

As a technical configuration for achieving the above object, the present invention is integrally fixed to the vertical wall (32) (34) that is parallel to each other at regular intervals while being vertical to the top of the bottom plate to be movable with a wheel, Stoppers 36 and 38 are mounted to be vertically inserted at both ends of the space formed between the vertical walls 32 and 34, and the stopper 36 is mounted to accommodate the hydraulic jack 60 on the inner center thereof. While having a semicircular cross-section hydraulic jack receiving device 50, the stopper 38 is provided on the inner surface of the vertical wall (32) (34) in a direction away from the other stopper 36 by a fixed projection plate (42) Of course, the stopper (38) of the stopper (38) and the roll shaft can penetrate to form a groove (43) having an open lower portion, the hydraulic jack 60 mounted on the hydraulic jack receiving device 50 is a hydraulic jack pump (64) For disassembling roll bearings to be provided with hydraulic pressure In jig,

The stopper 36 is sandwiched and fixed between a plurality of wall walls 40 fixed to the inner surface of the vertical walls 32 and 34, and the partition walls 40 are formed by each of the vertical walls 32 and 34. It is provided by a plurality of roll bearing disassembly jig characterized in that it is configured to be able to move the insertion position of the stopper 36 is provided in the longitudinal direction so as to be able to adjust the gap between the stopper 38.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an external perspective view showing the roll bearing disassembly jig (1) according to the present invention as a whole, consisting of a plurality of wheels 22 and the handle 24 is made of a bogie shape to be movable, the horizontal bottom It has a bottom plate 20 in the shape of a rectangular plate. Of course, the shape of the bottom plate 20 is not particularly limited, and the bottom plate 20 is sufficient to serve as a frame for receiving and supporting the components constituting the jig 1 of the present invention.

The vertical walls 32 and 34 which are vertically mounted are fixed to the upper portion of the bottom plate 20 while being parallel to each other at appropriate intervals.

In addition, a plurality of stoppers 36 and 38 are provided between the vertical walls 32 and 34, and the stoppers 36 and 38 are formed in a rectangular plate shape, respectively. 34 and positioned perpendicular to the vertical walls 32 and 34, fitted from top to bottom. At this time, each of the stoppers 36 and 38 is sandwiched between the vertical walls 32, 34 or between the vertical walls 32, 34 while almost touching the inner surface of the vertical walls 32, 34. It is desirable that the width be set to such an extent that no large force is required to pull it out. In addition, at the center of each upper surface of the vertical wall 32, 34 is provided with a handle 33 that can be grasped when mounting or removing it.

The stoppers 36 and 38 are provided at one end and the other end side of the vertical walls 32 and 34, respectively, and the path in which one stopper 36 is fitted is a vertical wall 32 and 34, respectively. It is provided by at least two partitions 40 are provided on the inner surface of the partitions 40 are formed parallel to each other apart from a certain length while being formed in a continuous length in the vertical direction of the vertical walls 32, 34 In this case, preferably, the distance between the spaces formed between the partition walls 40 is slightly larger than the thickness of the stopper 36. Of course, when the stopper 36 is mounted, the partition wall 40 formed on the one side vertical wall 32 and the partition wall 40 formed on the other vertical wall 34 must be at the same position with respect to the longitudinal direction of the vertical wall. The vertical wall and the stopper are positioned perpendicular to each other.

The path through which the other stopper 38 is fitted is provided by a protrusion plate 42 which is provided to protrude slightly on the inner surface of each of the vertical walls 32 and 34 and is fixed integrally, and the stopper 36 is partitioned 40 The stopper 38 is moved to any one direction, that is, toward the partition wall 40 by the protrusion plates 42 provided on the vertical walls 32 and 34, respectively. Is possible but movement in the opposite direction is blocked. Of course, the configuration of the stopper 38 and the protrusion plate 42 is just one example, the stopper 38 can also be supported by a plurality of partitions (40).

In addition, the stopper 36 supported by the partition wall 40 integrally fixes the hydraulic jack receiving device 50 having a semi-circular cross section at a substantially central portion of the surface facing the other stopper 38. Hydraulic tool 60 is mounted on the tool 50, and thus the hydraulic jack receiving device 50 is fixed to the stopper 36 with the upper portion open and concave downward.

In addition, the stopper 38 supported by the protruding plate 42 is formed with a "∩" -shaped groove 43 formed in the center portion and the lower portion thereof, and the roll shaft is fitted into the groove 43. It is preferable to have a plurality of stoppers 38 each having grooves 43 conforming to the roll shaft specification.

In addition, the hydraulic jack 60 is connected to the hydraulic jack pump 64 via the hose 62 to receive hydraulic pressure.

According to this configuration, when the bearing mounted on the roll shaft is to be replaced, the roll shaft is fitted in the groove 43 provided in the stopper 38 in a proper state in consideration of the height difference between the roll and the jig 1. Use rolls, not shown, to ensure that the roll is at the proper height.

In this state, one end of the roll shaft is mounted to the jig 1 of the present invention. In this case, a stopper 38 conforming to the roll shaft specification is prepared in advance.

That is, the jig 1 of the present invention is moved to one end side of the roll shaft to accommodate the roll shaft between the vertical walls 32 and 34, and at this time, the bearing block 90 enclosing the bearing is rolled on the roll shaft. As it is not removed, the stopper 38 of the present invention is fitted into the space between the bearing block 90 and the roll body 92. Of course, the stopper 38 is prepared in advance to meet the specifications of the roll shaft as described above, and the roll shaft is fitted into the groove 43 formed from the center portion to the lower end portion of the stopper 38.

At the same time, another stopper 36 is inserted through the space between the partition walls 40 at a position corresponding to the length of the roll shaft, and the hydraulic jack receiver 50 is loaded with the hydraulic jack 60 to exert a force on the roll shaft end. Preparation is complete.

Thereafter, the hydraulic jack pump 64 is operated to transfer the hydraulic pressure to the hydraulic jack 60 through the hose 62. The hydraulic jack 60 received the hydraulic pressure thus pushes the roll shaft end toward the stopper 38 while advancing. At this time, the bearing and the bearing block 90 mounted on the roll shaft are blocked from being moved in the direction in which the hydraulic jack 60 is acted by the stopper 38 so that the bearing and the bearing block 90 are released from the roll shaft. It can be.

Of course, when the displacement to which the hydraulic jack 60 is applied is small, the bearing disassembly operation is first performed through the above-described process, and the stopper 36 is properly disposed to the other stopper 38 side. Since the bearing disassembly can be continued through the above process after moving, the bearing and the bearing block can be disassembled very simply and quickly from the roll, and the bearing disassembly work from the roll of various different sizes is very simple and quick. It can be.

When the disassembly process is completed and the bearing disassembly is completed, the roll and the bearing are removed from the jig of the present invention to perform a subsequent process, that is, a process such as bearing replacement, and the jig 1 of the present invention disassembles the next bearing. Will wait.

As described above, according to the roll bearing disassembly jig according to the present invention, the bearing mounted on the roll shaft has an excellent practical effect that can be disassembled very quickly, simply and safely by the hydraulic jack with the bearing block mounted.

Claims (1)

The vertical walls 32 and 34 integrally fixed to the upper part of the bottom plate 20, which are equipped with wheels 22, to be movable and spaced apart from each other at a predetermined interval, are integrally fixed. Stoppers 36 and 38 are mounted to be inserted up and down at both ends of the space formed therebetween, and the stopper 36 is a semi-circular cross section hydraulic jack receiving device 50 for placing the hydraulic jack 60 on the inner center thereof. On the other hand, the stopper 38 is provided on the inner surface of the vertical wall 32, 34 is limited by the protrusion plate 42 fixed in the direction away from the other stopper 36, as well as the stopper (38) forms a groove (43) having a lower opening while penetrating the roll shaft, and the hydraulic jack (60) mounted on the hydraulic jack tool (50) is provided with hydraulic pressure by the hydraulic jack pump (64). In the jig for roll bearing disassembly, The stopper 36 is sandwiched and fixed between a plurality of partitions 40 fixed to an inner surface of the vertical walls 32 and 34, and the partitions 40 are each vertical walls 32 and 34. A plurality of roll bearing disassembly jig, characterized in that configured to be able to adjust the distance between the stopper (38) by being provided in the longitudinal direction of the stopper (36) can be moved.