CN106903170B - A kind of the second intermediate calender rolls of segmentation for sendzimir mill - Google Patents

Abstract

The invention discloses a segmented second intermediate roll for a Sendzimir rolling mill, which comprises a second intermediate roll core composed of multiple segmented roll cores, and baffle plates are arranged at both ends of the second intermediate roll core, The outer side of the second intermediate roller core is connected with a segmented sleeve corresponding to the segmented roll core one by one, and an elastic sleeve is arranged between the segmented roll core and the segmented sleeve to prevent the segmented roll core from The mutual rotation prevention parts of the segmented sleeves, the elastic bushings are arranged at the junction of the two segmented roller cores, the preventing parts are arranged between the two elastic bushings, and a The corresponding bearings are connected in series by the supporting roller mandrel. Under the condition of ensuring the overall stiffness of the rolling mill, the whole structure reduces the local stiffness of the rolling mill and improves the adjustment ability of the ASU crown adjustment device, so as to improve the adjustment ability of the rolling mill plate shape and correspondingly reduce the supporting reaction force on the ASU device. Play a certain protective effect on the adjustment device.

Description

A segmented second intermediate roll for Sendzimir rolling mill

technical field

The invention relates to a second intermediate roll of a Sendzimir rolling mill, in particular to a segmented second intermediate roll for a Sendzimir rolling mill.

Background technique

The Sendzimir rolling mill is an important equipment for cold rolling high-strength strips. The second intermediate free roll is located between the backup roll and the work roll. Since the rolling mill is generally integrally cast, it has good rigidity as its main advantage. However, in ASU When the crown is adjusted, the overall stiffness of the rolling mill is too large, and the ASU device is adjusted, and the supporting reaction force of the rolling mill also increases accordingly, and because the stiffness is too large, when the local crown is adjusted, the local deformation of the rolling mill is relatively large. Small, which affects the crown adjustment ability of the rolling mill, and the control ability for bad shape is weak. In order to achieve the adjustment amount of the shape, some parts of the rolling mill are operated under a large load, thereby reducing the life of the parts and increasing Cost of production.

Contents of the invention

The present invention aims at the deficiencies of the prior art, and provides a segmented second intermediate roll for Sendzimir rolling mill. Under the condition of ensuring the overall rigidity of the rolling mill, the local stiffness of the rolling mill is reduced, and the ASU crown adjustment device is improved. Adjustment ability, so as to improve the shape adjustment ability of the rolling mill, and correspondingly reduce the supporting reaction force received by the ASU device, and play a certain role in protecting the adjustment device.

In order to achieve the above object, the segmented second intermediate roll for Sendzimir rolling mill designed by the present invention is characterized in that: it includes a second intermediate roll core composed of multi-section segmented roll cores, and the second intermediate roll roll The two ends of the core are provided with baffles, and the outer side of the second intermediate roller core is connected with a segmented sleeve corresponding to the segmented roll core one by one, and an elastic shaft is arranged between the segmented roll core and the segmented sleeve The sleeve and the preventing part for preventing the mutual rotation of the segmented roller core and the segmented sleeve. There are one-to-one corresponding bearings arranged outside the sleeves, and the bearings are connected in series by the support roller mandrel.

Further, an annular cavity for connecting the elastic sleeve is provided at the connection between the segmented roller core and the two ends of the segmented sleeve, the inner diameter of the annular cavity is smaller than the outer diameter of the segmented roller core, and the outer diameter of the annular cavity is larger than The inner diameter of the segmented sleeve is smaller than the outer diameter of the segmented sleeve. The advantage of the structure is that when the elastic bushing is installed, its installation position can be fixed accordingly.

Further, the segmented roller core is equal to the axial dimension of the annular cavity at both ends of the segmented sleeve, the bearing is arranged in the center of the segmented sleeve, and the axial dimension of the annular cavity is the same as that from the end of the bearing to The distances between the ends of the corresponding side segment sleeves are equal. The advantage of the structure is to ensure that the connecting part of every two segmented rollers is between two adjacent backing bearings, just in the corresponding part of the ASU adjustment device, which is beneficial to increase the amount of crown adjustment.

Still further, the axial dimension of the elastic bushing is 2mm-4mm shorter than the gap between the two bearings. The structural advantage is that it can ensure the gap between the two rollers when the segmented rollers are connected.

Still further, the preventive component includes a mutually matched preventive keyway and a preventive key, the preventive keyway is an axial groove provided in the segmented sleeve, and the preventive key is an axial groove provided outside the segmented roller core. key. The advantage of the structure is that it can transmit the rotational torque and ensure the synchronous movement of the roller core and the sleeve.

Still further, there are four preventing key grooves, which are evenly arranged along the circumferential direction of the segmented sleeve, and four preventing keys are correspondingly arranged. The advantage of the structure is that it is more uniform in transmission.

Still further, the size of the opening of the preventing keyway is smaller than the size of the bottom of the keyway, the bottom of the preventing keyway is on the same circumference as the outer diameter of the annular cavity, and the structure of the preventing key matches the preventing keyway. The structural advantage is that the axial movement of the key can be limited by the elastic bushing.

Still further, rounded corners are provided on the outer surface of the junction of the two segmented sleeves. The structural advantage is that when the ASU is adjusted, it prevents the section of the segmented roller from contacting the first intermediate roller, forming a sharp point contact, and damaging the first intermediate roller.

The advantages of the present invention are:

1. There is a gap between the adjacent segmented sleeves, which will not affect each other when local deformation occurs, and it is easier to deform. There is also a gap between the roller cores, and they are connected by elastic sleeves, and the local flexibility is increased, so that Increase the amount of convexity adjustment, the outer diameters of both sides of the segmented sleeve are slightly smaller than the outer diameter of the middle part, forming a groove, when the local deformation, the edge of the segmented sleeve will not touch the backing bearing and the first intermediate roller, Related parts can be protected.

2. After the segmented roller core and segmented sleeve are assembled, the segmented roller is in contact with the backing bearing, and the rigidity is relatively large. In the distance between the two backing bearings, due to the gap between the two segmented roll cores, the local flexibility increases, which can reduce the local stiffness of the rolling mill and increase the crown adjustment ability of the ASU device on the premise of ensuring the overall stiffness of the rolling mill. In this way, the purpose of improving the shape adjustment ability of the rolling mill is achieved. Also under the same ASU adjustment amount, the supporting reaction force on the adjustment device will be correspondingly reduced.

3. The present invention is easy to assemble and disassemble, easy to manufacture, strong in realizability, capable of partial replacement, and can be partially replaced after partial damage to reduce costs.

Description of drawings

Figure 1 is a schematic diagram of the connection structure of the adjacent mechanism of the second intermediate roller.

Fig. 2 is a left view structural diagram of the connection of the adjacent mechanism of the second intermediate roller.

Fig. 3 Front view of core G of the second intermediate roll.

Fig. 4 Schematic diagram of the structure of a single segmented roller core.

Fig.5 Schematic diagram of enlarged left view of a single segmented roller core.

Fig. 6 Schematic diagram of the structure of a single segmented sleeve.

Figure 7 Left side view of a single segmented sleeve.

Figure 8 is a schematic diagram of the enlarged structure of a single segmented roller core.

Fig.9 Schematic diagram of enlarged left-view structure of a single segmented roller core.

Fig. 10 Schematic diagram of partial ASU adjustment of the second intermediate roller.

In the figure: second intermediate roller core G, bearing 1, support roller mandrel 2, segmented sleeve 3, preventing part 4, preventing keyway 4.1, preventing key 4.2, rounded corner 3.1, elastic bushing 5, segmented Roll core 6, baffle plate 7, first intermediate roll 8, annular cavity 9.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

The segmented second intermediate roll for the Sendzimir rolling mill shown in the figure includes a second intermediate roll core G composed of multi-section segmented roll cores 6, and baffles 7 are arranged at both ends of the second intermediate roll core G , the outer side of the second intermediate roll core G is connected with a segmented sleeve 3 corresponding to the segmented roll core 6 one-to-one, and an elastic sleeve 5 and an elastic sleeve 5 are arranged between the segmented roll core 6 and the segmented sleeve 3 to prevent segmentation Roller core 6 and segmented sleeve 3 are preventing parts 4 from mutual rotation. The elastic bushing 5 is arranged at the junction of the two segmented roller cores 6. The preventing part 4 is arranged between the two elastic bushings 5. The segmented sleeve 3 is Each is provided with a one-to-one corresponding bearing 1, and the bearing 1 is connected in series by the support roller mandrel 2.

Wherein, an annular cavity 9 for connecting the elastic bushing 5 is provided at the connection between the segmented roller core 6 and the two ends of the segmented sleeve 3, the inner diameter of the annular cavity 9 is smaller than the outer diameter of the segmented roller core 6, and the outer diameter of the annular cavity 9 is The diameter is greater than the inner diameter of the segmented sleeve 3 and smaller than the outer diameter of the segmented sleeve 3 . The segmented roller core 6 is equal to the axial dimension of the annular cavity 9 at both ends of the segmented sleeve 3, the bearing 1 is arranged in the middle of the segmented sleeve 3, and the axial dimension of the annular cavity 9 is the same as the end of the bearing 1 to the corresponding The distances between the ends of the side segment sleeves 3 are equal. The thickness of the annular cavity 9 is 1/4 of the outer diameter of the segmented roller core 6 . The axial dimension of the elastic bushing 5 is 2mm-4mm shorter than the gap between the two bearings 1 .

The preventing component 4 includes a mutually cooperating preventing keyway 4.1 and preventing key 4.2, the preventing keyway 4.1 is an axial groove arranged in the segmented sleeve 3, and the preventing key 4.2 is an axial key arranged outside the segmented roller core 6 . There are four prevention key grooves 4.2, which are evenly arranged along the circumferential direction of the segmented sleeve 3, and there are four prevention keys 4.2 correspondingly. The size of the opening of the keyway 4.1 is smaller than the bottom of the keyway, and the bottom of the keyway 4.1 is on the same circumference as the outer diameter of the annular cavity 9. The structure of the keyway 4.2 matches the keyway 4.1.

Rounded corners 3.1 are provided on the outer surfaces of the joints of the two segmented sleeves 3 .

As shown in Figure 10, when the ASU adjustment device adjusts the crown, the support roll mandrel 2 is partially deformed, and the backing bearing 1 on the support roll mandrel 2 is deformed accordingly. The two intermediate rollers are in contact, and then the local deformation is transmitted to the segmented sleeve 3 of the second intermediate roller. The deformation of the segmented sleeve 3 drives the deformation of the segmented roller core 6, so that the two adjacent segmented roller cores 6 Changes in the spacing lead to deformation of the elastic bushing 5, which sequentially transmits the deformation to the first intermediate roll 8, and finally the crown adjustment deformation is reflected on the rolled piece, thereby achieving the purpose of adjusting the shape of the rolled piece.

Claims (9)

1. A segmented second intermediate roll for Sendzimir rolling mill, characterized in that: comprise a second intermediate roll core (G) made up of multi-section segmented roll cores (6), said second intermediate roll roll Both ends of the core (G) are provided with baffles (7), and the outer side of the second intermediate roll core (G) is connected with a segmented sleeve (3) corresponding to the segmented roll core (6). Between the segmented roller core (6) and the segmented sleeve (3), there is an elastic bushing (5) and a preventing component (4) that prevents the segmented roller core (6) and the segmented sleeve (3) from rotating each other , the elastic bushing (5) is arranged at the junction of the two segmented roller cores (6), the preventing component (4) is arranged between the two elastic bushings (5), and the segmented sleeve (3) There are one-to-one corresponding bearings (1) arranged outside, and the bearings (1) are connected in series by the supporting roller mandrel (2). 2. The segmented second intermediate roll for Sendzimir rolling mill according to claim 1, characterized in that: the joints between the segmented roll core (6) and the segmented sleeve (3) are provided with Connect the annular cavity (9) of the elastic bushing (5), the inner diameter of the annular cavity (9) is smaller than the outer diameter of the segmented roller core (6), and the outer diameter of the annular cavity (9) is larger than the segmented sleeve (3 ) inner diameter is smaller than the outer diameter of the segmented sleeve (3). 3. The segmented second intermediate roll for Sendzimir rolling mill according to claim 2, characterized in that: the annular cavity (9) at the two ends of the segmented roll core (6) and the segmented sleeve (3) ) are equal in axial size, the bearing (1) is arranged in the middle of the segmented sleeve (3), and the axial size of the annular cavity (9) is the same as that from the end of the bearing (1) to the corresponding side segmented sleeve ( 3) The ends are equally spaced. 4. The segmented second intermediate roll for Sendzimir rolling mill according to claim 3, characterized in that: the thickness of the annular cavity (9) is 1/4 of the outer diameter of the segmented roll core (6). 5. The segmented second intermediate roll for Sendzimir rolling mill according to claim 4, characterized in that: the axial dimension of the elastic bushing (5) is 2 mm to 2 mm shorter than the gap between the two bearings (1). 4mm. 6. The segmented second intermediate roll for Sendzimir rolling mill according to claim 5, characterized in that: the preventive component (4) includes a preventive keyway (4.1) and a preventive key (4.2) that cooperate with each other, so The preventing key groove (4.1) is an axial groove arranged in the segmented sleeve (3), and the preventing key (4.2) is an axial key arranged outside the segmented roller core (6). 7. The segmented second intermediate roll for Sendzimir rolling mill according to claim 6, characterized in that: there are four preventing keyways (4.1), which are evenly arranged along the circumferential direction of the segmented sleeve (3) , said prevention key (4.2) is also correspondingly provided with 4. 8. The segmented second intermediate roll for Sendzimir rolling mill according to claim 7, characterized in that: the size of the opening of the preventing keyway (4.1) is smaller than the size of the bottom of the keyway, and the preventing keyway (4.1) The bottom of the groove is on the same circumference as the outer diameter of the annular cavity (9), and the structure of the preventing key (4.2) is matched with the preventing key groove (4.1). 9. The segmented second intermediate roll for Sendzimir rolling mill according to claim 8, characterized in that the outer surfaces of the joints of the two segmented sleeves (3) are provided with rounded corners (3.1).