CN201437196U

CN201437196U - Special device for dismantling bearing

Info

Publication number: CN201437196U
Application number: CN2009203034324U
Authority: CN
Inventors: 黄明安; 陈元福; 尹银兵; 刘春平
Original assignee: Panzhihua New Steel and Vanadium Co Ltd
Current assignee: Pangang Group Steel Vanadium and Titanium Co Ltd
Priority date: 2009-05-21
Filing date: 2009-05-21
Publication date: 2010-04-14
Anticipated expiration: 2019-05-21

Abstract

The utility model discloses a special device for dismantling a bearing, which is capable of dismantling the bearing from a bearing pedestal, and is characterized in that when dismantled, the bearing is prevented from being damaged. The special device comprises a baseplate for placing the bearing pedestal, a bracket arranged on two sides of the baseplate and a cross beam arranged between two brackets on two sides, wherein a power element is arranged at the lower part of the cross beam, a pressing plate the size of which is matched with that of the bearing outer ring is arranged at the bottom part of the power element, and a through hole the size of which is less than the external size of the bearing pedestal but larger than the diameter of the bearing outer ring is arranged on the baseplate. When the structure is adopted to dismantle the bearing from the bearing pedestal, each part of the bearing is subject to even stress, thereby not only facilitating the removal of the bearing from the bearing pedestal, but also avoiding the damage to the bearing being removed. The utility model is particularly suitable for removing the double-row conic bearing of a vertical roll and the double-row cylindrical bearing outer casing of a horizontal roll when the heavy rail is rolled by a universal method.

Description

Bearing splits out isolated plant

Technical field

The utility model relates to a kind of structure of removing mechanical tight fit part, especially relates to a kind of bearing being split out isolated plant from the bearing that bearing block splits out.

Background technology

At present, in the universal mill bearing, the biserial conical bearing overcoat of edger roll and edger roll body (being bearing block) be compound hot charging together, have only a step of 15 mm wides behind the hot charging between the two row overcoats.The edger roll body is scrapped after effectively using the loaded vehicle amount to reach 100 millimeters, but the use of edger roll bearing is only used about 1/4, one the edger roll design bearing of design standard and can be repeated to assemble four edger roll bodies.Harmless split out of this moment edger roll bearing outside and edger roll body behind hot charging just becomes the restriction edger roll bearing bottleneck technical problem in service life.Draw horse and the copper rod method of knocking all can't realize harmless splitting out with traditional hydraulic pressure, thereby cause the waste while operating efficiency of bearing extremely low.

Four row cylindrical bearing overcoats of universal mill horizontal roller are assemblied in the bearing block, after reaching certain amount of rolling of reaching the standard grade, need that bearing outside is split out the back and change stressed district to improve the service life of bearing, carry out the maintenance works such as play adjustment of bearing simultaneously.Because bearing outside and the stressed main stressed district of bearing block concentrate on both sides up and down, use certain hour rear bearing block bore hole or bearing outside that distortion is arranged, the bearing outside and the bearing block that cause former gap to assemble can't split out, and knock because of discontinuity can't can't harm with copper rod to split out.

The proportion that the universal mill bearing accounts for production cost is bigger.The use amount of edger roll bearing is bigger, and universal mill horizontal roller bearing is safeguarded more frequent, must find an easy and practical bearing outside can't harm and split out method, to reduce production costs and to increase work efficiency.

The utility model content

Technical problem to be solved in the utility model provides a kind of bearing that can avoid bearing to be damaged on bearing and splits out isolated plant when bearing block splits out.

The technical scheme that its technical problem that solves the utility model adopts is: bearing splits out isolated plant, comprise the base plate that is used to place bearing block, be arranged on the support of base plate both sides and be connected crossbeam between two side stands, below crossbeam, be provided with dynamical element, the dynamical element bottom is furnished with and the suitable pressing plate of bearing outer ring size, and base plate is provided with less than the bearing block external dimensions greater than the through hole of bearing outer diameter.

Further be, the support of base plate both sides is provided with the connecting through hole suitable with crossbeam, and crossbeam is removably connected in the connecting through hole.

Further be that described dynamical element adopts hydraulic jack.

The beneficial effects of the utility model are: after adopting structure of the present utility model, during work, make dynamical element work, promote pressing plate function on the outer ring of bearing, at this moment, because base plate is to the support (promptly being equivalent to bearing block is applied an opposite force) of bearing block, bearing is just deviate from from bearing block the inside via through holes smoothly.Obviously it is stressed evenly that this mode of splitting out can make the various piece of bearing, both being beneficial to bearing takes out from the bearing block the inside, be damaged in the time of also can effectively placing the bearing taking-up, use in the dismounting of edger roll biserial conical bearing when being particluarly suitable for the universal rolling heavy rail and horizontal roller four row cylindrical bearing overcoats.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the structural representation of embodiment 1;

Fig. 5 is the structural representation of embodiment 2.

Be labeled as among the figure: base plate 1, support 2, crossbeam 3, dynamical element 4, pressing plate 5, through hole 6, connecting through hole 7, edger roll body 8, bearing outside 9, omnipotent bearing block 10, omnipotent bearing 11.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As Fig. 1～shown in Figure 5, bearing of the present utility model splits out isolated plant, comprise the base plate 1 that is used to place bearing block, be arranged on the support 2 of base plate 1 both sides and be connected crossbeam 3 between two side stands 2, below crossbeam 3, be provided with dynamical element 4, dynamical element 4 bottoms are furnished with the pressing plate 5 suitable with the bearing outer ring size, and base plate 1 is provided with less than the bearing block external dimensions greater than the through hole 6 of bearing outer diameter.With bearing when bearing block splits out, at first bearing block is lifted on the base plate 1, make bearing over against through hole 6, then pressing plate 5 is placed on the bearing, make dynamical element 4 work, promote pressing plate 5 and act on the outer ring of bearing, at this moment, because the support (promptly being equivalent to bearing block is applied an opposite force) of 1 pair of bearing block of base plate, bearing are just deviate from from bearing block the inside via through holes 6 smoothly.Obviously it is stressed evenly that this mode of splitting out can make the various piece of bearing, both had been beneficial to bearing and taken out from the bearing block the inside, also can effectively place when bearing takes out to be damaged.In this embodiment, dynamical element 4 can adopt structures such as cam mechanism or pneumatic cylinder to realize, as optimal way, described dynamical element 4 adopts hydraulic jack, can improve the reliability of the work of splitting out.

In the above-described embodiment, crossbeam 3 can directly be welded on the support 2 of base plate 1 both sides, but be unfavorable for bearing block is lifted on the base plate 1 of these two side stands, 2 centres smoothly, as preferred embodiment, the support 2 of base plate 1 both sides is provided with the connecting through hole 7 suitable with crossbeam 3, and crossbeam 3 is removably connected in the connecting through hole 7.When then working, at first bearing block is lifted on the base plate 1 of two side stands, 2 centres, crossbeam 3 is assembled in the connecting through hole 7 again, at last dynamical element 4 and pressing plate 5 are assembled, this mode can be beneficial to the lifting of bearing block, raises the efficiency.

Embodiment 1:

As shown in Figure 4, during dismounting edger roll bearing, the edger roll body 8 (edger roll of this moment interior cover of cover plate, roll mandrel, bearing is up and down dismantled by normal method) that is set with biserial conical bearing overcoat is hung on base plate 1, between two bearing outsides 9, insert pressing plate 5 in the gap of 15mm, the through hole 6 of bearing outside 9 on the base plate 1.Can again with the edger roll turn-over, use the same method another row overcoat is taken out after the row bearing outside taking-up with the hydraulic jack about two 20T, thereby successfully finish the dismounting of a whole set of bearing.

Embodiment 2:

As shown in Figure 5, omnipotent bearing 11 is four-line column roller bearings, and the internal diameter of roller holder is 432mm, and the external diameter of pressing plate 5 is designed to φ 432mm.In use, omnipotent bearing block 10 is hung on the base plate 1 in the support, put pressing plate 5, pressing plate 5 embeds the end face that acts on bearing roller in the retainer endoporus, the characteristics of utilizing the stressed work of bearing roller to make good use of can extrude omnipotent bearing 11 smoothly with the hydraulic jack of 1 5T.

Claims

1. bearing splits out isolated plant, it is characterized in that: comprise the base plate (1) that is used to place bearing block, be arranged on the support (2) of base plate (1) both sides and be connected crossbeam (3) between two side stands (2), be provided with dynamical element (4) in crossbeam (3) below, dynamical element (4) bottom is furnished with the pressing plate (5) suitable with the bearing outer ring size, and base plate (1) is provided with less than the bearing block external dimensions greater than the through hole (6) of bearing outer diameter.

2. bearing as claimed in claim 1 splits out isolated plant, it is characterized in that: the support (2) of base plate (1) both sides is provided with and the suitable connecting through hole (7) of crossbeam (3), and crossbeam (3) is removably connected in the connecting through hole (7).

3. bearing as claimed in claim 1 or 2 splits out isolated plant, it is characterized in that: described dynamical element (4) adopts hydraulic jack.