A transmission shaft suspension device for a multi-roller rolling mill

Abstract

The present invention belongs to the technical field of metallurgical equipment, and specifically relates to a transmission shaft suspension device for a multi-roll mill; it comprises a bracket, a driving member is provided on the upper end surface of the bracket, a guide seat is provided on the lower end surface of the bracket corresponding to the position of the driving member, wherein the driving member is vertically arranged relative to the bracket, and a piston rod is provided inside the driving member, the piston rod vertically penetrates the bracket and enters the guide seat, a guide rod is connected to the lower end of the piston rod, and the connection between the guide rod and the piston rod is located in the guide seat. The transmission shaft suspension device provides a guide seat and a guide rod connected to the piston rod, so that the hydraulic cylinder of the transmission shaft suspension device has a lateral force protection function, so as to avoid the wear of the seal caused by the lateral force on the hydraulic cylinder and cause leakage of the hydraulic cylinder, thereby protecting the hydraulic cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a transmission shaft suspension device for a multi-roller rolling mill. Background Art

[0002] The transmission shaft of the rolling mill is used to connect the roll and the output shaft of the gearbox. The movement and torque of the motor are transmitted to the roll through the transmission shaft of the rolling mill. According to the adjustment range of the roll and the need for roll change of the rolling mill, the transmission shaft suspension often adopts hydraulic suspension. The hydraulic suspension is easy to adjust the position of the transmission shaft when changing the roll. In the multi-roll mill, it can also balance or lift the transmission shaft, thereby balancing or lifting the roll connected to the transmission shaft, so that the roll is close to the support roll to maintain rolling stability. Considering the adjustment range of the roll and the change of the inclination angle of the transmission shaft, the transmission shaft suspension device should be able to meet the following requirements: the suspension device should be able to move up and down; it can rotate around the various hinge shafts and piston rod shafts of the suspension device. The previous suspension device consists of a hydraulic cylinder, a connecting rod, and a lifting ring with a bearing. The lifting ring with a bearing is set on the transmission shaft, one end of the connecting rod is hinged to the piston rod of the hydraulic cylinder, and the other end of the connecting rod is hinged to the lifting ring. This suspension device has the following disadvantages: the transmission shaft swings back and forth when changing rolls, and it is difficult to align the rolls and connect the transmission shaft; the hydraulic cylinder piston rod is subject to lateral force, which can easily cause wear of the hydraulic cylinder seal and cause leakage; the transmission shaft is difficult to replace, and when replacing the transmission shaft, it is necessary to remove the connecting pin between the lifting ring and the connecting rod before the transmission shaft can be pulled out of the rolling mill together with the lifting ring. Summary of the invention

[0003] The technical problem to be solved by the present invention is that, in view of the drawbacks of the existing suspension devices, a transmission shaft suspension device for a multi-roll rolling mill is provided. By arranging a guide seat and a guide rod connected to the piston rod, the hydraulic cylinder of the transmission shaft suspension device has the function of preventing lateral force, thereby preventing the hydraulic cylinder from being leaked due to wear of the seal caused by lateral force on the hydraulic cylinder, thereby protecting the hydraulic cylinder.

[0004] The present invention provides the following technical solution: a transmission shaft suspension device for a multi-roll rolling mill, comprising a bracket, a driving member is provided on the upper end surface of the bracket, and a guide seat is provided on the lower end surface of the bracket corresponding to the position of the driving member, wherein the driving member is vertically arranged relative to the bracket, and a piston rod is provided inside the driving member, the piston rod vertically penetrates the bracket and penetrates the guide seat, the lower end of the piston rod is connected to a guide rod, and the connection between the guide rod and the piston rod is located in the guide seat, the lower end of the guide rod is hinged with a connecting rod fork through a first pin shaft, the lower end of the connecting rod fork is hinged with a hook through a second pin shaft, an anti-rotation plate is provided above the hook, the anti-rotation plate is connected to the connecting rod fork as a whole through the first pin shaft, and the lower end of the anti-rotation plate abuts against the upper end surface of the hook, the upper side surface of the anti-rotation plate and the outer side surface of the guide seat are provided with a spacing distance, and a transmission shaft is supported by the hook.

[0005] Furthermore, two rollers are installed at the lower part of the hook, and the outer side surface of the transmission shaft is rollingly supported by the two rollers.

[0006] Furthermore, the lower end of the anti-rotation plate is arranged as an arc-shaped portion, the upper end surface of the hook is arranged with a plane, and the arc-shaped portion abuts against the plane.

[0007] Furthermore, a pin hole is penetrated through the middle of the connecting rod fork, the first pin shaft is inserted into the pin hole, a clamping plate is provided on one side of the connecting rod fork, one end of the first pin shaft protrudes from the pin hole, and a clamping groove is provided on the side of the protruding part facing the clamping plate, and the upper edge of the clamping plate is clamped into the clamping groove.

[0008] Furthermore, a swing groove is provided at the upper end of the hook, the lower part of the connecting rod fork penetrates into the swing groove, and the connecting rod fork is swingably connected in the swing groove through a second pin shaft.

[0009] Furthermore, the hook includes an inclined connecting portion, the swing groove passes through the connecting portion in the up and down directions, an extension portion is vertically downwardly provided at the lower end of the connecting portion, a support portion is horizontally provided at the lower end of the extension portion, a through groove is provided in the middle of the support portion, and the roller is rotatably connected in the through groove.

[0010] Furthermore, the connecting portion, the extending portion and the supporting portion are integrally formed.

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] The present invention provides a transmission shaft suspension device for a multi-roller rolling mill. The transmission shaft suspension device provides a guide seat and a guide rod connected to a piston rod, so that the hydraulic cylinder of the transmission shaft suspension device has an anti-lateral force function, thereby preventing the hydraulic cylinder from being subjected to lateral force and causing wear of the seal to cause leakage of the hydraulic cylinder, thereby protecting the hydraulic cylinder; the transmission shaft is not easy to swing back and forth when changing rolls, and the rolling rolls are easy to align and connect with the transmission shaft; the hook with a roller is replaced by a lifting ring ring, and the transmission shaft can be directly pulled out when replacing the transmission shaft without disassembling any part of the transmission shaft suspension device; the hook with a roller is replaced by a lifting ring ring, and the roller can be disengaged from the transmission shaft when the hook is lowered, thereby increasing the service life of the roller; the operation difficulty can be reduced, and the production and maintenance costs of the equipment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A perspective view of the present invention;

[0014] Figure 2 is a cross-sectional view of the present invention;

[0015] Figure 3 It is a partial enlarged view of the arc-shaped portion in the present invention;

[0016] Figure 4 It is a partial enlarged view of the anti-rotation plate in the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the hook in the present invention;

[0018] Figure 6 It is a structural schematic diagram of the card board in the present invention.

[0019] In the figure: 1- bracket, 2- driving member, 3- guide seat, 4- anti-rotation plate, 41- arc portion, 5- guide rod, 6- connecting rod fork, 7- first pin shaft, 71- slot, 8- second pin shaft, 9- hook, 91- plane, 92- swing slot, 93- connecting portion, 94- extension portion, 95- supporting portion, 10- roller, 11- transmission shaft, 12- card plate. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] like Figure 1As shown; a transmission shaft suspension device for a multi-roll mill, comprising a bracket 1, wherein a driving member 2 is provided on the upper end surface of the bracket 1, and the driving member 2 is preferably a hydraulic cylinder. A guide seat 3 is provided on the lower end surface of the bracket 1 corresponding to the position of the driving member 2, wherein the driving member 2 is vertically arranged relative to the bracket 1, and a piston rod is provided inside the driving member 2, and the piston rod vertically penetrates the bracket 1 and penetrates the guide seat 3, and a guide rod 5 is connected to the lower end of the piston rod, and the connection between the guide rod 5 and the piston rod is located in the guide seat 3. The guide rod 5 moves up and down along the guide seat 3 under the driving action of the hydraulic cylinder, and the load lateral force received by the guide rod 5 is transmitted to the guide seat 3, so as to prevent the hydraulic cylinder from being subjected to lateral force and causing leakage of the hydraulic cylinder, thereby protecting the hydraulic cylinder. The lower end of the guide rod 5 is hinged with a connecting rod fork 6 through a first pin shaft 7, and the lower end of the connecting rod fork 6 is hinged with a hook 9 through a second pin shaft 8. An anti-rotation plate 4 is arranged above the hook 9. The anti-rotation plate 4 is connected to the connecting rod fork 6 as a whole through the first pin shaft 7, and the lower end of the anti-rotation plate 4 abuts against the upper end surface of the hook 9. The upper side surface of the anti-rotation plate 4 is provided with a spacing distance from the outer side surface of the guide seat 3, and a transmission shaft 11 is supported by the hook 9. The axes of the first pin shaft 7 and the second pin shaft 8 are perpendicular to each other, the anti-rotation plate 4 is fixedly connected to the connecting rod fork 6, and the upper half of the anti-rotation plate 4 can prevent the hook 9 from rotating randomly at a large angle around the axis of the guide rod 5 by maintaining a plane contact gap with the guide seat 3, and can appropriately allow the hook 9 to rotate at a small angle around the axis of the guide rod 5. The bottom of the anti-rotation plate 4 can block the hook 9 from swinging around the second pin 8 in one direction. The hook 9 is blocked by the bottom of the anti-rotation plate 4 under the eccentric force of its own weight, so that the hook 9 can swing around the second pin 8 and stop quickly, thereby preventing the hook 9 from swinging back and forth around the second pin 8 for a long time. Since the transmission shaft 11 is not easy to swing back and forth, the roller can be easily aligned with the transmission shaft 11.

[0022] Two rollers 10 are installed at the lower part of the hook 9, and the outer side of the transmission shaft 11 is rollingly supported by the two rollers 10. The two rollers 10 installed on the hook 9 can support the rotating transmission shaft 11. After the rolling process stabilizes, the hook 9 can be lowered according to the specific situation, so that the rollers 10 on the hook 9 are out of contact with the transmission shaft 11, thereby increasing the service life of the rollers 10.

[0023] The lower end of the anti-rotation plate 4 is provided with an arc portion 41, and the upper end surface of the hook 9 is provided with a plane 91, and the arc portion 41 abuts against the plane 91. The arc portion 41 contacts the plane 91 to ensure the uniqueness of the contact point, thereby controlling the position of the hook 9 to remain unique and preventing the position of the hook 9 from changing continuously.

[0024] A pin hole is formed in the middle of the connecting rod fork 6, and the first pin shaft 7 is inserted into the pin hole. A clamping plate 12 is formed on one side of the connecting rod fork 6, and one end of the first pin shaft 7 protrudes from the pin hole, and a clamping groove 71 is formed on the side of the protruding portion facing the clamping plate 12, and the upper end of the clamping plate 12 is clamped into the clamping groove 71. After the clamping plate 12 is clamped into the clamping groove 71, the position of the first pin shaft 7 in the pin hole can be controlled to remain unchanged.

[0025] The upper end of the hook 9 is provided with a swing groove 92, the lower part of the connecting rod fork 6 penetrates into the swing groove 92, and the connecting rod fork 6 is swingably connected in the swing groove 92 through the second pin 8. The hook 9 has a certain swing amplitude in the swing groove 92, and has the advantage of better operational flexibility.

[0026] The hook 9 includes an inclined connection portion 93, the swing groove 92 passes through the connection portion 93 in the vertical direction, an extension portion 94 is vertically downwardly provided at the lower end of the connection portion 93, a support portion 95 is horizontally provided at the lower end of the extension portion 94, a through slot is provided in the middle of the support portion 95, and the roller 10 is rotatably connected in the through slot. The connection portion 93, the extension portion 94 and the support portion 95 form a C-shaped structure, which is convenient for placing the transmission shaft 11, and the support portion 95 ensures stable support for the transmission shaft 11.

[0027] The connecting portion 93, the extending portion 94 and the supporting portion 95 are integrally formed, which is beneficial to ensure the rigidity of the hook 9 as a whole.

[0028] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transmission shaft suspension device for a multi-roll mill, comprising a bracket (1), characterized in that: The upper end surface of the bracket (1) is provided with a driving member (2), and a guide seat (3) is provided on the lower end surface of the bracket (1) corresponding to the position of the driving member (2), wherein the driving member (2) is vertically arranged relative to the bracket (1), and a piston rod is provided inside the driving member (2), and the piston rod vertically penetrates the bracket (1) and penetrates the guide seat (3), and the lower end of the piston rod is connected to a guide rod (5), and the connection between the guide rod (5) and the piston rod is located in the guide seat (3), and the lower end of the guide rod (5) is connected to the piston rod through A connecting rod fork (6) is hingedly connected to the first pin shaft (7), and a hook (9) is hingedly connected to the lower end of the connecting rod fork (6) via a second pin shaft (8). An anti-rotation plate (4) is arranged above the hook (9). The anti-rotation plate (4) is integrally connected to the connecting rod fork (6) via the first pin shaft (7), and the lower end of the anti-rotation plate (4) abuts against the upper end surface of the hook (9). A spacing distance is arranged between the upper side surface of the anti-rotation plate (4) and the outer side surface of the guide seat (3), and a transmission shaft (11) is supported by the hook (9).

2. A transmission shaft suspension device for a multi-roll mill as claimed in claim 1, characterized in that: Two rollers (10) are installed at the lower part of the hook (9), and the outer side surface of the transmission shaft (11) is rollingly supported by the two rollers (10).

3. A transmission shaft suspension device for a multi-roll mill as claimed in claim 2, characterized in that: The lower end of the anti-rotation plate (4) is provided as an arc-shaped portion (41), the upper end surface of the hook (9) is provided with a plane (91), and the arc-shaped portion (41) abuts against the plane (91).

4. A transmission shaft suspension device for a multi-roll mill as claimed in claim 3, characterized in that: A pin hole is formed in the middle of the connecting rod fork (6), and the first pin shaft (7) is inserted into the pin hole. A clamping plate (12) is formed on one side of the connecting rod fork (6), and one end of the first pin shaft (7) protrudes from the pin hole, and a clamping groove (71) is formed on the side of the protruding portion facing the clamping plate (12), and the upper end of the clamping plate (12) is clamped into the clamping groove (71).

5. A transmission shaft suspension device for a multi-roll mill as claimed in claim 4, characterized in that: The upper end of the hook (9) is provided with a swing groove (92), the lower part of the connecting rod fork (6) is inserted into the swing groove (92), and the connecting rod fork (6) is swingably connected to the swing groove (92) through the second pin shaft (8).

6. A transmission shaft suspension device for a multi-roll mill as claimed in claim 5, characterized in that: The hook (9) comprises a connection portion (93) which is arranged obliquely, the swing groove (92) passes through the connection portion (93) in the up-down direction, an extension portion (94) is vertically provided at the lower end of the connection portion (93), a support portion (95) is horizontally provided at the lower end of the extension portion (94), a through groove is provided in the middle of the support portion (95), and the roller (10) is rotatably connected in the through groove.

7. A transmission shaft suspension device for a multi-roll mill as claimed in claim 6, characterized in that: The connecting portion (93), the extending portion (94) and the supporting portion (95) are integrally formed.

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