Rolling line adjusting device with back-up roll balance mechanism and adjusting method

Abstract

The invention belongs to the technical field of plate and strip rolling, and particularly relates to a rolling line adjusting device with a supporting roller balance mechanism and an adjusting method. A rolling line adjusting device with a back-up roll balancing mechanism comprises a transmission side adjusting mechanism, a synchronous coupler and an operation side adjusting mechanism, the operation side adjusting mechanism comprises a fixing stud and a piston rod, the lower portion of the piston rod is connected with a T-shaped head, the upper end of the fixing stud is installed above a housing window, and a lifting threaded sleeve is arranged on the outer side of the fixing stud and connected with the T-shaped head. A pressing plate is arranged between the upper portion of the supporting roller bearing seat and the lifting threaded sleeve, the T-shaped head penetrates through the pressing plate to be connected with a groove in the upper portion of the supporting roller bearing seat, a connecting flat plate is arranged on the outer side of the upper portion of the lifting threaded sleeve, a balancing weight and a driving mechanism are symmetrically arranged on the two sides of the upper portion of the connecting flat plate, a large gear ring is arranged on the outer side of the lower portion of the lifting threaded sleeve, and the driving mechanism is rotationally connected with the large gear ring. Through a combined structure of the fixed stud and the lifting screw sleeve, the lifting screw sleeve is driven by the driving mechanism to realize rolling line adjustment.

Description

Technical Field

[0001] The present invention belongs to the technical field of plate and strip rolling, and in particular relates to a rolling line adjustment device with a support roller balancing mechanism and an adjustment method. Background Art

[0002] During metal strip rolling and roll changing, a balancing mechanism is required to overcome the weight of the support roll assembly and adjust the rolling line position according to the roll diameter after grinding. Existing technologies generally design a balancing cylinder on the hydraulic bending roll cylinder block of the rolling mill or install a hydraulic suspension welded frame above the arch. Due to the large weight of the support roll and work roll assembly, the balancing mechanism provides a reverse force through hydraulic or mechanical means to prevent the rolls from sagging due to their own weight, causing roll gap deviation and affecting the thickness accuracy of the plate. However, the existing balancing mechanism has a complex structure and high cost. In addition, the rolling line adjustment device is generally a wedge and stepped pad structure, which is independent of the balancing mechanism, takes up a lot of space and has low positioning accuracy. Summary of the Invention

[0003] In response to the above problems, the purpose of the present invention is to provide a rolling line adjustment device and adjustment method with a support roller balancing mechanism. Through the combined structure of a fixed stud and a lifting screw sleeve engaged with trapezoidal threads, the rolling line adjustment is achieved by driving the gear with a hydraulic motor to rotate the lifting screw sleeve, and at the same time, the hydraulic balancing cylinder embedded in the piston rod realizes the balance of the support roller assembly.

[0004] The technical solution of the present invention is: a rolling line adjustment device with a support roller balancing mechanism, comprising a transmission side adjustment mechanism, a synchronous coupling and an operating side adjustment mechanism, the transmission side adjustment mechanism and the operating side adjustment mechanism having the same structure and being mirror-imaged along both sides of the synchronous coupling, the operating side adjustment mechanism comprising a fixed stud, a piston hole being provided at the middle position of the lower end of the fixed stud, a support roller balancing mechanism being provided in the piston hole, the support roller balancing mechanism comprising a piston rod, a cylinder cover being provided on the outer side of the piston hole, a T-shaped head being connected after the lower part of the piston rod passes through the cylinder cover, the upper end of the fixed stud being installed above the archway window, a lifting screw sleeve being provided on the outer side of the fixed stud, a pressure plate being provided above the support roller bearing seat and between the lifting screw sleeve, a through hole being provided in the middle of the pressure plate, the T-shaped head passing through the through hole of the pressure plate and connected to the groove above the support roller bearing seat, a connecting plate being provided on the outer side of the upper part of the lifting screw sleeve, the connecting plate being rotatably connected to the lifting screw sleeve, a counterweight block and a driving mechanism being symmetrically provided on both sides of the fixed stud above the connecting plate, a large gear ring being provided on the outer side of the lower part of the lifting screw sleeve, the driving mechanism being rotatably connected to the large gear ring.

[0005] The driving mechanism includes a support, which is fixedly connected to the connecting plate. A hydraulic motor and a commutator are provided above the support. A transmission coupling is connected between the output end of the hydraulic motor and the input end of the commutator. The output end below the commutator is connected to a harmonic reducer, which is fixedly installed below the connecting plate. A pinion is provided on the output shaft below the harmonic reducer, and the pinion is meshed with a large ring gear.

[0006] An L-shaped key is provided on the lifting screw sleeve above the large gear ring.

[0007] The fixing stud and the lifting screw sleeve are connected by a thread, and the thread of the threaded connection is a trapezoidal thread.

[0008] A clamping key is provided above the rotatable connection between the connecting plate and the lifting screw sleeve.

[0009] The connecting flat plate is respectively provided with anti-rotation plates on both sides of one side of the counterweight block, and the anti-rotation plates are fixedly connected to the side faces of the memorial archway columns.

[0010] The connecting plate is provided with a bracket below one side of the harmonic reducer, and the bracket is fixedly connected to the harmonic reducer.

[0011] A transition plate is provided between the lower portion of the commutator and the connecting flat plate.

[0012] A rolling line adjustment method with a support roller balancing mechanism, using the rolling line adjustment device with a support roller balancing mechanism as described above, comprises the following steps: S1. When adjusting the rolling line, the hydraulic motor drives the commutator to rotate, and the commutator adjusts the horizontal rotation to vertical rotation, thereby driving the harmonic reducer connected to it. The small gear at the lower end of the harmonic reducer drives the large ring gear installed on the lifting screw sleeve to rotate. The counterweight block and the drive mechanism are arranged at both ends of the connecting plate to ensure that the lifting screw sleeve is evenly loaded without unbalanced load, and the meshing action with the fixed stud is not blocked. The lifting screw sleeve is adjusted to move up and down around the fixed stud, driving the pressure plate to adjust to the required position; S2. During the rolling production process, the piston rod is lifted to drive the support roller bearing seat to fit with the pressure plate. When changing the roll, the piston rod is extended to disengage the T-head from the groove of the support roller bearing seat to maintain a gap, ensuring that the support roller assembly is smoothly moved out of the rolling mill to achieve roll changing.

[0013] The technical effects of the present invention are: 1. The present invention uses a combined structure of a fixed stud and a lifting screw sleeve engaged with trapezoidal threads, and a hydraulic motor drives the gear to rotate the lifting screw sleeve to achieve rolling line adjustment; 2. The present invention uses a hydraulic balancing cylinder embedded in the piston rod to achieve the balance of the support roller assembly, which has a compact structure and occupies a small space; 3. The present invention adopts a trapezoidal thread structure, has high positioning accuracy, and can be self-locking; 4. The present invention adopts a hydraulic motor, a harmonic reducer, and a gear ring transmission, which has high reliability and long service life.

[0014] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional general assembly structure of a rolling line adjustment device with a support roller balancing mechanism of the present invention.

[0016] Figure 2 It is a top view of a rolling line adjustment device with a support roller balancing mechanism according to the present invention.

[0017] Figure 3 It is a cross-sectional view of a rolling line adjustment device with a support roller balancing mechanism according to the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional general assembly structure of the operating side of the present invention.

[0019] Figure markings: 1-transmission side adjustment mechanism; 2-synchronizing coupling; 3-operation side adjustment mechanism; 4-archway; 5-fixing stud; 6-counterweight; 7-key; 8-anti-rotation plate; 9-connecting plate; 10-lifting screw sleeve; 11-large ring gear; 12-L-type key; 13-cylinder head; 14-piston rod; 15-T-type head; 16-pressure plate; 17-support roller bearing seat; 18-pinion; 19-harmonic reducer; 20-bracket; 21-transition plate; 22-commutator; 23-hydraulic motor; 24-support; 25-transmission coupling. DETAILED DESCRIPTION Example 1

[0020] like Figure 1As shown, a rolling line adjustment device with a support roller balancing mechanism includes a transmission side adjustment mechanism 1, a synchronous coupling 2 and an operating side adjustment mechanism 3. The transmission side adjustment mechanism 1 and the operating side adjustment mechanism 3 have the same structure and are mirror-imaged along both sides of the synchronous coupling 2. The operating side adjustment mechanism 3 includes a fixed stud 5, a piston hole is provided at the middle position of the lower end of the fixed stud 5, a support roller balancing mechanism is provided in the piston hole, the support roller balancing mechanism includes a piston rod 14, a cylinder cover 13 is provided on the outside of the piston hole, the lower part of the piston rod 14 passes through the cylinder cover 13 and is connected to a T-shaped head 15, the upper end of the fixed stud 5 is installed on Above the window of the archway 4, a lifting screw sleeve 10 is provided on the outside of the fixed stud 5, and a pressure plate 16 is provided between the lifting screw sleeve 10 and the upper part of the support roller bearing seat 17. A through hole is provided in the middle of the pressure plate 16, and the T-shaped head 15 passes through the through hole of the pressure plate 16 and is connected to the groove above the support roller bearing seat 17. A connecting plate 9 is provided on the outer side of the upper part of the lifting screw sleeve 10, and the connecting plate 9 is rotatably connected to the lifting screw sleeve 10. Counterweights 6 and a driving mechanism are symmetrically provided on both sides of the fixed stud 5 above the connecting plate 9. A large gear ring 11 is provided on the outer side of the lower part of the lifting screw sleeve 10, and the driving mechanism is rotatably connected to the large gear ring 11.

[0021] When the present invention adjusts the rolling line, the driving mechanism drives the large gear ring 11 installed on the lifting screw sleeve 10 to rotate, and the counterweight block 6 and the driving mechanism are arranged at both ends of the connecting plate 9, which can ensure that the lifting screw sleeve 10 is evenly loaded without biased load, and the meshing action with the fixed stud 5 is not blocked. The lifting screw sleeve 10 performs lifting and adjustment around the fixed stud 5, driving the pressure plate 16 to adjust to the required position; during the rolling production process, the piston rod 14 lifts and drives the support roller bearing seat 17 to fit with the pressure plate 16. When changing the roller, the piston rod 14 extends to disengage the T-head 15 from the groove of the support roller bearing seat 17 to maintain a gap, ensuring that the support roller assembly is smoothly moved out of the rolling mill to achieve roller change. The present invention uses a combination structure of a fixed stud and a lifting screw sleeve with trapezoidal thread meshing, and a hydraulic motor drives the gear to rotate the lifting screw sleeve to achieve rolling line adjustment. At the same time, the present invention uses a hydraulic balancing cylinder embedded in the piston rod to achieve the balance of the support roller assembly. It has a compact structure and occupies little space. Example 2

[0022] On the basis of Example 1, in this embodiment, preferably, the driving mechanism includes a support 24, the support 24 is fixedly connected to the connecting plate 9, a hydraulic motor 23 and a commutator 22 are provided above the support 24, a transmission coupling 25 is connected between the output end of the hydraulic motor 23 and the input end of the commutator 22, the output end below the commutator 22 is connected to a harmonic reducer 19, the harmonic reducer 19 is fixedly installed below the connecting plate 9, a pinion 18 is provided on the output shaft below the harmonic reducer 19, and the pinion 18 is meshed with the large ring gear 11.

[0023] When the present invention adjusts the rolling line, the hydraulic motor 23 drives the commutator 22 to rotate, and the commutator 22 adjusts the horizontal rotation to vertical rotation, thereby driving the harmonic reducer 19 connected thereto. The small gear 18 at the lower end of the harmonic reducer 19 drives the large ring gear 11 installed on the lifting screw sleeve 10 to rotate, and the lifting screw sleeve 10 performs a lifting and adjustment action around the fixed stud 5, driving the pressure plate 16 to adjust to the required position. Example 3

[0024] On the basis of Example 1 or Example 2, in this embodiment, preferably, an L-shaped key 12 is provided on the lifting screw sleeve 10 above the large gear ring 11.

[0025] The lifting screw sleeve 10 above the large gear ring 11 of the present invention is provided with an L-shaped key 12 , and the L-shaped key 12 fixes the large gear ring 11 on the lifting screw sleeve 10 . Example 4

[0026] On the basis of Example 1 or Example 3, in this embodiment, preferably, the fixing stud 5 and the lifting screw sleeve 10 are connected by a thread, and the thread of the threaded connection is a trapezoidal thread.

[0027] The fixing stud 5 and the lifting screw sleeve 10 of the present invention are connected by a thread, and the thread of the threaded connection is a trapezoidal thread. The trapezoidal thread structure is adopted between the fixing stud 5 and the lifting screw sleeve 10, which has high positioning accuracy and can be self-locking. Example 5

[0028] On the basis of Example 1 or Example 4, in this embodiment, preferably, a latching key 7 is provided above the rotatable connection between the connecting plate 9 and the lifting screw sleeve 10 .

[0029] A card key 7 is provided above the rotatable connection between the connecting plate 9 and the lifting screw sleeve 10 of the present invention. The card key 7 is fixed to the upper part of the lifting screw sleeve 10, limiting the connecting plate 9 to a fixed relative height position on the lifting screw sleeve 10. The lifting screw sleeve 10 and the connecting plate 9 can rotate relative to each other, but cannot move up and down relative to each other. Example 6

[0030] On the basis of Example 1 or Example 5, in this embodiment, preferably, the connecting plate 9 is provided with anti-rotation plates 8 on both sides of one side of the counterweight block 6, and the anti-rotation plates 8 are fixedly connected to the side of the column of the archway 4.

[0031] The two anti-rotation plates 8 of the present invention are fixed to the side of the archway 4 columns to clamp the right end of the connecting plate 9. The connecting plate 9 can move up and down along the anti-rotation plates 8 but cannot rotate. Example 7

[0032] On the basis of Example 1 or Example 6, in this embodiment, preferably, the connecting plate 9 is provided with a bracket 20 below one side of the harmonic reducer 19 , and the bracket 20 is fixedly connected to the harmonic reducer 19 .

[0033] The connecting plate 9 of the present invention is provided with a bracket 20 below one side of the harmonic reducer 19 . The bracket 20 is fixedly connected to the harmonic reducer 19 to ensure that the harmonic reducer 19 is firmly installed. Example 8

[0034] On the basis of Example 1 or Example 7, in this embodiment, preferably, a transition plate 21 is provided between the lower portion of the commutator 22 and the connecting plate 9 .

[0035] In the present invention, a transition plate 21 is provided between the lower portion of the commutator 22 and the connecting plate 9 . The transition plate 21 is fixed above the connecting plate 9 and is used for mounting the commutator 22 . Example 9

[0036] A rolling line adjustment method with a support roller balancing mechanism, using the rolling line adjustment device with a support roller balancing mechanism as described above, comprises the following steps: S1. When adjusting the rolling line, the hydraulic motor 23 drives the commutator 22 to rotate, and the commutator 22 adjusts the horizontal rotation to vertical rotation, thereby driving the harmonic reducer 19 connected thereto. The small gear 18 at the lower end of the harmonic reducer 19 drives the large ring gear 11 installed on the lifting screw sleeve 10 to rotate. The counterweight block 6 and the driving mechanism are arranged at both ends of the connecting plate 9, which can ensure that the lifting screw sleeve 10 is evenly loaded and the meshing action with the fixed stud 5 is not blocked. The lifting screw sleeve 10 is lifted and lowered around the fixed stud 5 to drive the pressure plate 16 to be adjusted to the required position; S2. During the rolling production process, the piston rod 14 is lifted to drive the support roller bearing seat 17 to fit with the pressure plate 16. When changing the rolls, the piston rod 14 is extended to disengage the T-head 15 from the groove of the support roller bearing seat 17 to maintain a gap, ensuring that the support roller assembly is smoothly moved out of the rolling mill to achieve roll changing.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A rolling line adjustment device with a support roller balancing mechanism, characterized in that: The invention comprises a transmission side adjustment mechanism (1), a synchronous coupling (2) and an operating side adjustment mechanism (3), wherein the transmission side adjustment mechanism (1) and the operating side adjustment mechanism (3) have the same structure and are mirror-imaged along both sides of the synchronous coupling (2), wherein the operating side adjustment mechanism (3) comprises a fixing stud (5), a piston hole is provided at the middle position of the lower end of the fixing stud (5), a support roller balancing mechanism is provided in the piston hole, the support roller balancing mechanism comprises a piston rod (14), a cylinder cover (13) is provided on the outer side of the piston hole, the lower part of the piston rod (14) passes through the cylinder cover (13) and is connected to a T-shaped head (15), the upper end of the fixing stud (5) is installed above the window of the archway (4), and the fixing stud (5) is provided at the inner side of the piston hole. A lifting screw sleeve (10) is provided on the outside of the column (5), a pressure plate (16) is provided between the upper part of the support roller bearing seat (17) and the lifting screw sleeve (10), a through hole is provided in the middle of the pressure plate (16), the T-shaped head (15) passes through the through hole of the pressure plate (16) and is connected to the groove above the support roller bearing seat (17), a connecting plate (9) is provided on the upper outer side of the lifting screw sleeve (10), the connecting plate (9) is rotatably connected to the lifting screw sleeve (10), a counterweight (6) and a driving mechanism are symmetrically provided on both sides of the fixed stud (5) above the connecting plate (9), a large gear ring (11) is provided on the lower outer side of the lifting screw sleeve (10), and the driving mechanism is rotatably connected to the large gear ring (11).

2. A rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: The driving mechanism includes a support (24), the support (24) is fixedly connected to the connecting plate (9), a hydraulic motor (23) and a commutator (22) are provided above the support (24), a transmission coupling (25) is connected between the output end of the hydraulic motor (23) and the input end of the commutator (22), the output end below the commutator (22) is connected to a harmonic reducer (19), the harmonic reducer (19) is fixedly installed below the connecting plate (9), a pinion (18) is provided on the output shaft below the harmonic reducer (19), and the pinion (18) and the large ring gear (11) are meshed with each other.

3. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: An L-shaped key (12) is provided on the lifting screw sleeve (10) above the large gear ring (11).

4. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: The fixing stud (5) and the lifting screw sleeve (10) are connected by a thread, and the thread of the threaded connection is a trapezoidal thread.

5. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: A latch key (7) is provided above the rotatable connection between the connecting plate (9) and the lifting screw sleeve (10).

6. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: The connecting plate (9) is provided with anti-rotation plates (8) on both sides of one side of the counterweight block (6), and the anti-rotation plates (8) are fixedly connected to the side of the column of the archway (4).

7. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: The connecting plate (9) is provided with a bracket (20) below one side of the harmonic reducer (19), and the bracket (20) is fixedly connected to the harmonic reducer (19).

8. The rolling line adjustment device with a support roller balancing mechanism according to claim 1, characterized in that: A transition plate (21) is provided between the lower portion of the commutator (22) and the connecting plate (9).

9. A method for adjusting a rolling line with a support roller balancing mechanism, using the rolling line adjustment device with a support roller balancing mechanism as claimed in claim 2, characterized in that: The following steps are involved: S1. When the rolling line is adjusted, the hydraulic motor (23) drives the commutator (22) to rotate, and the commutator (22) adjusts the horizontal rotation to vertical rotation, thereby driving the harmonic reducer (19) connected thereto, and the small gear (18) at the lower end of the harmonic reducer (19) drives the large gear ring (11) installed on the lifting screw sleeve (10) to rotate. The counterweight block (6) and the driving mechanism are arranged at both ends of the connecting plate (9), which can ensure that the lifting screw sleeve (10) is evenly loaded without partial load, and the meshing action with the fixed stud (5) is not blocked. The lifting screw sleeve (10) is adjusted to move up and down around the fixed stud (5), driving the pressure plate (16) to adjust to the required position; S2. During the rolling production process, the piston rod (14) is lifted to drive the support roller bearing seat (17) to fit with the pressure plate (16). When changing the rolls, the piston rod (14) is extended to disengage the groove of the T-shaped head (15) and the support roller bearing seat (17) to maintain a gap, thereby ensuring that the support roller assembly can be smoothly moved out of the rolling mill to achieve roll change.

Images