CN207507981U - A kind of roll for facilitating bearing dismantling - Google Patents

Abstract

The utility model discloses a kind of rolls for facilitating bearing dismantling, including the body of roll, the both ends of the body of roll are both provided with connecting shaft, it is equipped with bushing, clutch shaft bearing and second bearing in the connecting shaft successively from inside to outside, first annular groove and third ring-shaped groove are provided on the outer wall of the connecting shaft, the first annular groove is between the bushing and the clutch shaft bearing, and the third ring-shaped groove is between the clutch shaft bearing and the second bearing.The utility model facilitates the roll of bearing dismantling not need to additionally increase other devices, everything goes well with your work carries out for the dismounting for ensuring that between roll and bearing, the time slot of rolling work is substantially reduced, is effectively shortened rolling rhythm, benefit is increased for Plate Production producer.

Description

A kind of roll for facilitating bearing dismantling

Technical field

The utility model belongs to metallurgical steel rolling equipment technical field, and in particular to a kind of roll for facilitating bearing dismantling.

Background technology

Core component of the roll as milling train mainly by the body of roll and is arranged on the connecting shaft of body of roll end and forms, wherein Connecting shaft is installed within the bearing, the roll-force that roll generates can be transmitted to rack by bearing block screwdown gear.Roll is carrying out When rolling work, once the roll surface of roll is worn, roll from bearing need to just be disassembled, then its roll surface is carried out Loaded vehicle is refaced, therefore it is the work often done that dismounting is carried out to roll and bearing.

For the ease of dismounting, the inner ring of bearing is generally gap-matched, and the surface that bearing coordinates with connecting shaft is also Oil lubrication need to be used.When the lubricating condition between bearing and connecting shaft mating surface is bad, the bearing in connecting shaft And other attachmentes will be got rusty easily, in addition roll also may be used when carrying out roller between connecting shaft due to dry Adjacent position forms fin between causing each section, and roll is finally caused to be difficult to complete to dismantle.

Utility model content

The purpose of this utility model is to provide a kind of roll for facilitating bearing dismantling, solves the roll of milling train in loaded vehicle or again During mill, there are problems that being difficult to dismantle.

The utility model is the technical scheme adopted is that a kind of roll for facilitating bearing dismantling, including the body of roll, the body of roll Both ends be both provided with connecting shaft, be equipped with bushing, clutch shaft bearing and second bearing, institute in the connecting shaft successively from inside to outside It states and first annular groove and third ring-shaped groove is provided on the outer wall of connecting shaft, the first annular groove is located at the bushing Between the clutch shaft bearing, the third ring-shaped groove is between the clutch shaft bearing and the second bearing.

The technical solution of the utility model also has the characteristics that：

Conical journal, the first rank axis and the second-order axis that the connecting shaft is gradually successively decreased from inside to outside comprising internal diameter successively, The bushing is sleeved on the conical journal and the first rank axis, and the clutch shaft bearing is sleeved on the first rank axis, The second bearing is sleeved on the second-order axis.

The clutch shaft bearing is four-row tapered roller bearing, and the second bearing is single-row tapered roller bearing, described the The second ring-shaped groove is additionally provided on the outer wall of single order axis, second ring-shaped groove is located at the four-row tapered roller bearing Between two raceway inner rings.

Be set with distance collar on the second-order axis, the distance collar be located at the first rank axis and the second bearing it Between, the third ring-shaped groove is between the distance collar and the second bearing.

The first annular groove, second ring-shaped groove and the third ring-shaped groove are arc-shaped.

The beneficial effects of the utility model are：A kind of roll for facilitating bearing dismantling of the utility model, principle are：Even It in spindle, is particularly located between bushing and clutch shaft bearing, opens up first annular groove between clutch shaft bearing and second bearing respectively With third ring-shaped groove, since the grooved surface of first annular groove and third ring-shaped groove is below the surface of connecting shaft, so Get rusty at this or roller generate small deformation when, will not the surface of connecting shaft formed hinder, influence the dismounting of roll.

Description of the drawings

Fig. 1 is structure diagram when a kind of roll for facilitating bearing dismantling of the utility model assembles；

Fig. 2, which is that the utility model is a kind of, facilitates the structure diagram of the roll of bearing dismantling after removal.

In figure, 1. bodies of roll, 2. bushings, 3. clutch shaft bearings, 4. distance collars, 5. second bearings, 6. bearing blocks, 7. is first annular Groove, 8. second ring-shaped grooves, 9. third ring-shaped grooves, 10. second-order axis, 11. first rank axis, 12. conical journals.

Specific embodiment

The technical solution of the utility model is described in further detail below in conjunction with description of the drawings and specific embodiment.

As shown in Figure 1, a kind of roll for facilitating bearing dismantling of the utility model, including the body of roll 1, the both ends of the body of roll 1 are all provided with Connecting shaft is equipped with, bushing 2, clutch shaft bearing 3 and second bearing 5, the outer wall of connecting shaft are equipped with successively from inside to outside in connecting shaft On be provided with first annular groove 7 and third ring-shaped groove 9, first annular groove 7 is between bushing 2 and clutch shaft bearing 3, Three ring-shaped grooves 9 between clutch shaft bearing 3 and second bearing 5, install respectively by the bearing block 6 of clutch shaft bearing 3 and second bearing 5 On milling train.

Firstly the need of explanation, due to not being integrated design between bushing 2, clutch shaft bearing 3 and second bearing 5, therefore And it is particularly located at when the condition of lubrication is bad, in connecting shaft between bushing 2 and clutch shaft bearing 3 and clutch shaft bearing 3 and second It gets rusty easily at adjacent position between bearing 5, formation rusts layer, and the surface which is attached to connecting shaft can cause to connect Axis is difficult to split out from bushing 2, clutch shaft bearing 3 and second bearing 5.

In addition roll is when carrying out roller, also the easy adjacent position between bushing 2, clutch shaft bearing 3 and second bearing 5 Place forms fin, which can also cause roll to be difficult to complete to dismantle.

And a kind of roll for facilitating bearing dismantling of the utility model is in order to solve this problem, in connecting shaft, specifically exists A first annular groove 7 is opened up at adjacent position between bushing 2 and clutch shaft bearing 3, in 3 and second axis of clutch shaft bearing It holds and a third ring-shaped groove 9 is opened up at position adjacent between 5.Due to first annular groove 7 and the ditch of third ring-shaped groove 9 Groove face is below the surface of connecting shaft, so since layer is got rusty in generation of getting rusty or roll generates fin in roller and formed at this During smaller deformation, it will not be formed and hindered on the surface of connecting shaft, and then avoid the dismounting for influencing roll, such roll and bearing Between can successfully carry out dismounting work.

As shown in Fig. 2, connecting shaft is made of from inside to outside conical journal 12, the first rank axis 11 and second-order axis 10 successively, And the internal diameter of conical journal 12, the first rank axis 11 and second-order axis 10 once successively decreases.One end of bushing 2 is sleeved on conical journal On 12, the other end is sleeved on the first rank axis 11, easy to disassemble, and clutch shaft bearing 3 is sleeved on the first rank axis 11, first annular ditch Slot 7 is located on the first rank axis 11, and second bearing 5 is sleeved on second-order axis 10, and third ring-shaped groove 9 is located at second-order axis 10 On.

As shown in Figure 1,3 preferred four-row tapered roller bearing of clutch shaft bearing, so can be set on the outer wall of the first rank axis 11 Second ring-shaped groove 8 is put, which should be located between two raceway inner rings of four-row tapered roller bearing, Prevent from being difficult to dismantle caused by getting rusty easily or leading to the problem of fin at this, second bearing 5 then preferably single-row circle Taper roller bearing.

As shown in Figure 1, being set with distance collar 4 on second-order axis 10, distance collar 4 should be located at the first rank axis 11 and the second axis Between holding 5, third ring-shaped groove 8 then should be between distance collar 4 and second bearing 5.

One end of distance collar 4 is pressed on the end face of the first rank axis 11, and the other end of distance collar 4 is then pressed on second bearing 5 end, mainly to second bearing 5, it positions fixed effect.

As shown in Fig. 2, first annular groove 7, the second ring-shaped groove 8 and third ring-shaped groove 9 are arc-shaped, and its The junction of connecting shaft using arc transition, greatly facilitates the dismounting between roll and bearing.

Therefore, a kind of roll for facilitating bearing dismantling of the utility model does not need to additionally increase other auxiliary devices, just Can ensure that the dismounting work between roll and bearing can be carried out successfully, so as to substantially reduce rolling work time between Gap effectively accelerates rolling rhythm, and larger benefit is increased for Plate Production producer.

Claims (5)

1. a kind of roll for facilitating bearing dismantling, including the body of roll (1), the both ends of the body of roll (1) are both provided with connecting shaft, described It is equipped with bushing (2), clutch shaft bearing (3) and second bearing (5) in connecting shaft successively from inside to outside, which is characterized in that the company First annular groove (7) and third ring-shaped groove (9) are provided on the outer wall of spindle, the first annular groove (7) is positioned at institute It states between bushing (2) and the clutch shaft bearing (3), the third ring-shaped groove (9) is positioned at the clutch shaft bearing (3) and described Between two bearings (5).

2. the roll according to claim 1 for facilitating bearing dismantling, which is characterized in that the connecting shaft is from inside to outside successively Conical journal (12), the first rank axis (11) and the second-order axis (10) gradually to successively decrease comprising internal diameter, the bushing (2) are sleeved on institute It states on conical journal (12) and the first rank axis (11), the clutch shaft bearing (3) is sleeved on the first rank axis (11), institute Second bearing (5) is stated to be sleeved on the second-order axis (10).

3. the roll according to claim 2 for facilitating bearing dismantling, which is characterized in that the clutch shaft bearing (3) is four row Taper roll bearing, the second bearing (5) are single-row tapered roller bearing, are also set up on the outer wall of the first rank axis (11) Have the second ring-shaped groove (8), second ring-shaped groove (8) positioned at the four-row tapered roller bearing two raceway inner rings it Between.

4. the roll according to claim 3 for facilitating bearing dismantling, which is characterized in that be set on the second-order axis (10) There is distance collar (4), the distance collar (4) is between the first rank axis (11) and the second bearing (5), the third ring Shape groove (8) is between the distance collar (4) and the second bearing (5).

5. the roll according to claim 4 for facilitating bearing dismantling, which is characterized in that the first annular groove (7), institute It is arc-shaped to state the second ring-shaped groove (8) and the third ring-shaped groove (9).