Shearing blade gap adjusting device of large hobbing shearing machine

Abstract

The invention relates to the field of finishing and shearing of rolled steel wide and thick plates, and discloses a shear blade gap adjusting device of a large hobbing shear. The device comprises a gear motor and four elevators which are connected in series, multi-stage synchronous transmission is achieved through couplings, the four elevators are connected with vertical moving wedges through fork rods respectively, the vertical moving wedges interact with horizontal moving wedges to form wedge mechanisms, the horizontal moving wedges can move in the horizontal direction, and the horizontal moving wedges can move in the horizontal direction. The speed reducing motor and the elevator are both fixed on the box body of the main speed reducer of the shearing machine, and the tapered wedge mechanism is positioned between the box body of the main speed reducer of the shearing machine and the upper knife rest, so that the functional requirement of adjusting the gap between the shearing blades of the steel plate hobbing shearing machine with the breadth of more than 5500mm is met, and uniform and reliable support is provided for the upper knife rest of equipment; the problems that the shearing track of a large hobbing shearing machine deviates, and the gap of the shear blade jumps are solved, the reliability of gap adjustment of the shear blade is guaranteed, and the notch quality and the shearing precision of large-specification breadth steel plate shearing are improved.

Description

Technical Field

[0001] The invention relates to a shear blade gap adjustment device in a large-scale rolling-cutting-to-length shear machine and a large-scale rolling-cutting-to-crop shear machine of a finishing shearing equipment for rolled steel wide and thick plates. Background Art

[0002] Domestic steel companies have increasingly stringent requirements for product quality, precision, and specifications. Large-format wide and heavy plate production lines are undoubtedly a promising method for improving the quality, output, and efficiency of wide and heavy plate. Currently, domestic wide and heavy plate rolling-cutting and cropping shears are available in widths of 3000mm, 3500mm, 3800mm, 4300mm, and 5000mm. However, there is a lack of rolling-cutting and cropping shears for widths exceeding 5500mm. This invention primarily addresses a shear blade gap adjustment device for rolling-cutting and cropping shears for widths exceeding 5500mm.

[0003] The shear blade gap adjustment device of the large-scale rolling shear for thick and wide plates with a size of more than 5500mm is a key component of the equipment. Reliable shear blade gap adjustment device technology is crucial to the shearing quality and shearing accuracy of the equipment, especially the shear blade gap adjustment device of the large-scale rolling shear for thick and wide plates with a size of more than 5500mm is the core technology of the equipment.

[0004] Large-format rolling-cut sizing and cropping shears for thick and wide plates over 5,500mm can meet the demand for large-format and wide steel plates in industries such as military, nuclear energy, shipbuilding, bridge construction, and construction. They achieve high production capacity, low energy consumption, and high yield rates. More importantly, they significantly reduce the risk of steel plate splicing and improve product performance. As rolling-cut sizing and cropping shears develop towards large-scale, automated, intelligent, and specialized development, the requirements for smooth, step-free, bend-free cuts, low energy consumption, long life, and a high level of automation are becoming increasingly stringent, and improvements in the shearing quality and efficiency of thick and wide plate are becoming increasingly significant. Summary of the Invention

[0005] The purpose of the present invention is to provide a shear blade gap adjustment device for a rolling shearing machine with a large-size steel plate width of more than 5500mm. The device is matched with a reasonable reduction motor, elevator, coupling, and wedge mechanism to ensure that the equipment has a high degree of automation, stable operation, high equipment precision, strong shearing thickness capacity, good incision quality of large-size steel plates, and low vibration and noise during the shearing process.

[0006] The present invention adopts the following technical scheme, which includes a reduction motor, a first-level synchronous coupling, a proximal elevator, a second-level synchronous coupling, a distal elevator, a pin shaft, a fork rod, a horizontally movable wedge, a wedge mechanism mating surface slide and a vertically movable wedge; it is characterized in that: the reduction motor is located between the two proximal elevators, and the two distal elevators are located at the two ends of the series arrangement. The reduction motor relies on the first-level synchronous coupling to connect the proximal elevator, and then the two proximal elevators rely on a second-level synchronous coupling to connect the distal elevator respectively.

[0007] As a preferred solution of the present invention, it also includes a sensor bracket and a linear displacement sensor, which adjusts the shearing gap between the lower shearing blade box and the upper shearing blade box by changing the thickness of the bevel mechanism located between the main reduction gearbox and the upper tool holder of the large rolling shear. The four horizontally movable bevels in the four bevel mechanisms can only move in the horizontal direction, and the four vertically movable bevels rely on the drive system to achieve synchronous lifting and lowering and act on the fixed main reduction gearbox of the rolling shear and the horizontally movable bevel, respectively, thereby pushing the upper tool holder and the shearing blade to change the shearing gap. The shearing gap value of the rolling shear can be detected by the linear displacement sensor.

[0008] As another preferred embodiment of the present invention, the device relies on four sets of wedge mechanisms to adjust the shear blade gap, and uses four elevators to drive the fork rods to drive the vertically moving wedges. The power comes from a reduction motor, in which the reduction motor and the elevator are arranged in series to ensure rigid mechanical synchronization.

[0009] As the third preferred solution of the present invention, the shear blade gap adjustment device of the large rolling shear machine relies on 4 sets of bevel wedge mechanisms to adjust the shear blade gap. The slope ratio of the working bevel of the bevel wedge mechanism is 1:10, that is, when the elevator drives the vertical moving bevel wedge to rise or fall, the horizontal moving bevel wedge pushes the upper tool holder of the large rolling shear machine forward or backward 1 / 10 of the distance the vertical moving bevel wedge moves.

[0010] Beneficial effects of the invention: The research and development of the shearing blade gap adjustment device for a large-scale 5500mm wide and thick plate rolling shear of the present invention adopts technologies such as an optimized drive layout, a reliable transmission structure, a precise shearing blade gap amplification function, and a wedge mechanism force reduction mechanism, which perfectly realizes the research and development and optimized design of the shearing blade gap adjustment device of this large-scale rolling shear, and realizes a leap forward in the rolling shear from 5000mm to 5500mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall assembly of the three-dimensional digital model of the present invention.

[0012] Figure 2 It is a top view of the reduction motor, elevator and coupling arranged in series according to the present invention.

[0013] Figure 3It is a partial cross-sectional view of the present invention at an internal position of a large-scale rolling shear.

[0014] Figure 4 yes Figure 3 A is an enlarged schematic diagram. DETAILED DESCRIPTION

[0015] A shearing blade gap adjustment device for a large rolling shear, the shearing blade gap adjustment device adopts a multi-stage synchronous transmission scheme in which a reduction motor synchronously drives 4 lifts to adjust 4 sets of bevel wedge mechanisms to adjust the shearing blade gap. The device includes a reduction motor 1, a first-level synchronous coupling 2, a proximal lift 3, a sensor bracket 4, a linear displacement sensor 5, a second-level synchronous coupling 6, a distal lift 7, a pin 8, a fork rod 9, a horizontally movable bevel 11, a bevel mechanism joint surface slide 12, and a vertically movable bevel 13; the shearing blade gap adjustment device drive system is composed of a reduction motor 1 as the core, together with two proximal lifts 3 and two distal lifts 7 arranged in linear series, wherein the reduction motor 1 is located between the two proximal lifts 3, and the two distal lifts The machines 7 are located at both ends of the series arrangement, the reduction motor 1 relies on the first-level synchronous coupling 2 to connect the near-end elevator 3, and then the two near-end elevators 3 rely on a second-level synchronous coupling 6 to connect the far-end elevator 7. The drive system layout of this set of gap adjustment device not only effectively reduces the level of torque transmitted to the end by the reduction motor 1 and improves the torque transmission efficiency, but more importantly, it greatly reduces the working torque of the first-level synchronous coupling 2 and the second-level synchronous coupling 6, making the torque transmission more efficient and reliable; the core of the execution system of the shearing blade gap adjustment device is the inclined wedge mechanism, which relies on changing the thickness of the inclined wedge mechanism located between the main reduction box 16 and the upper tool holder 18 of the large rolling shear to adjust the shearing blade gap between the lower shearing blade box 19 and the upper shearing blade box 20. The four horizontally movable wedges 11 in the four wedge mechanisms can only move in the horizontal direction, and the four vertically movable wedges 13 rely on the drive system to achieve synchronous lifting and lowering and act on the fixed rolling shear main reduction box 16 and the horizontally movable wedges 11 respectively, thereby pushing the upper tool holder 18 and the shear blade to change the shear blade gap. The shear blade gap value of the rolling shear can be detected by the linear displacement sensor 5.

[0016] The device relies on four sets of inclined wedge mechanisms to adjust the shear blade gap, so four elevators are used to drive the fork rod 9 to drive the vertically movable inclined wedge 13. The power comes from a reduction motor 1, wherein the reduction motor 1 and the elevator are arranged in series to ensure rigid mechanical synchronization, and the reduction motor 1 is located between the second and third elevators of the four elevators, which can effectively reduce the torque transmission requirements of the first-level synchronous coupling 2 and the second-level synchronous coupling 6 and improve the torque transmission efficiency. More importantly, it can ensure the reliability of the shear blade gap adjustment device of the large rolling shear machine, and realize the ability of the equipment to shear high-strength steel plates with a width greater than 5500mm and a thickness of 6-50mm, with the characteristics of good shear cut quality, low vibration and noise.

[0017] The device relies on four sets of bevel wedge mechanisms to adjust the shear blade gap. The slope ratio of the working bevel of the bevel wedge mechanism is 1:10, that is, when the elevator drives the vertically movable bevel 13 to rise or fall, the horizontally movable bevel 11 pushes the upper tool holder 18 of the large rolling shear machine forward or backward by 1 / 10 of the distance moved by the vertically movable bevel 13. The slope ratio of 1:10 not only meets the self-locking condition of the bevel mechanism, but also greatly reduces the pressure on the joint surface between the horizontally movable bevel 11 and the vertically movable bevel 13. In addition, after the shear blade gap adjustment accuracy is amplified by the bevel mechanism, the adjustment is more precise, which greatly improves the reliability of the shear blade gap adjustment device of the large rolling shear machine and reduces the manufacturing and maintenance costs.

[0018] The shear gap adjustment device of this large-scale rolling shear is a multi-stage transmission mechanism. The reduction motor 1 is the core power source to drive the shear gap adjustment device, and the shear gap adjustment function is achieved by relying on the horizontal thickness change of the inclined wedge mechanism. Specifically, the reduction motor 1 with dual output shafts is simultaneously connected to two first-level synchronous couplings 2 to pass power to two proximal elevators 3 respectively. The two proximal elevators 3 simultaneously pass part of the power to the two distal elevators 7 through their respective connected second-level synchronous couplings 6. In this way, a double-branch two-level series power transmission mode with the reduction motor in the middle is formed, in which each first-level synchronous coupling 2 has to bear the working torque of one proximal elevator 3 and one distal elevator 7, compared with the second-level synchronous coupling 6 which only bears the torque of the distal elevator 7. The rated torque of the first-stage synchronous coupling 2 is greater than the rated torque of the second-stage synchronous coupling 6; when the shear blade gap adjustment device is working, the four lifts transmit power to their respective corresponding inclined wedge mechanisms through the pin shaft 8, the fork rod 9, the vertical moving inclined wedge-fork rod connecting nut 22, and the vertical moving inclined wedge 13. The four groups of transmission transmission mechanisms start and stop at the same time to ensure that the vertical moving inclined wedge 13 moves synchronously and the change value is the same. At the same time, each horizontal moving inclined wedge 11 is equipped with two horizontal moving inclined wedge limit sliding keys 17 to limit the horizontal moving inclined wedge 11 from moving horizontally. It can move in the vertical direction, relying on the synchronous change of the thickness of the four sets of wedge mechanisms and acting on the upper tool holder to adjust the shear blade gap between the lower shear blade box 19 and the upper shear blade box 20; the vertical moving wedge 13 and the horizontal moving wedge 11 of each wedge mechanism interact with each other, and the forces they bear are mutually acting and reacting; in order to improve the working efficiency of the wedge mechanism, the vertical moving wedge 13 is respectively in contact with the horizontal moving wedge 11 and the main reduction box 16 of the rolling shear through the wedge mechanism joint surface slide 12 and the main reduction box slide 14, wherein the wedge mechanism structure The surface sliding plate 12 is embedded in the horizontally movable inclined wedge 11 and moves with it, and the main reduction gearbox sliding plate 14 is installed on the main reduction gearbox sliding plate seat 15 and then fixed to the main reduction gearbox 16 of the rolling shear. This fixing method can effectively improve the rigidity and strength of the main reduction gearbox sliding plate 14, and it is more convenient to repair and replace the sliding plate; the inclined wedge mechanism is in contact with the upper tool holder at all times during the shearing process of the large rolling shear, providing reliable support for the upper tool holder, so a thicker horizontal movable inclined wedge upper tool holder side sliding plate 10 is embedded on the tool holder side of the horizontal movable inclined wedge 11 to reduce friction resistance and reduce wear.The stable supporting force provided by the shearing blade gap adjustment device during the shearing process of the large-scale rolling shear is particularly important. If the supporting force is unreliable, the upper blade holder 18 will be subjected to alternating high load impact, and the front panel 21 of the rolling shear and the bevel mechanism will not be able to completely limit the movement trajectory of the upper blade holder, which will easily cause the blade gap to jump, affecting the shearing quality and even damaging the equipment; the bevel mechanism transmission inclined surface slope of the device of the present invention is 1:10, that is, when the elevator drives the vertical moving bevel 11 to rise or fall, the horizontal moving bevel 11 pushes the upper blade holder of the large-scale rolling shear to retreat or advance 1 / 10 of the distance moved by the vertical moving bevel 11. The slope of 1:10 not only meets the self-locking condition of the bevel mechanism, but also greatly reduces the pressure on the joint surface of the horizontal moving bevel 11 and the vertical moving bevel 11. More importantly, the shearing blade gap adjustment accuracy is amplified by the bevel mechanism, and the adjustment is more accurate, which greatly improves the reliability of the shearing blade gap adjustment device of the large-scale rolling shear. At the same time, it reduces the maximum lifting force requirement of the elevator and the power of the reduction motor, reducing manufacturing and maintenance costs. In addition, the proximal elevator 3 and the distal elevator 7 have the same functions. The distal elevator 7 can choose a single input shaft type, but considering the interchangeability of the equipment, the four elevators are usually unified into a double-output shaft form, and each elevator is equipped with a linear displacement sensor to monitor the shear blade gap value, so as to realize automatic monitoring and detection of the equipment operation status and automatic control.

[0019] The key points of the present invention lie in its structure and operating principle. The blade gap adjustment device is a key component of large-scale rolling shears. The reliability of the blade gap adjustment device directly determines the shearing quality and precision of steel plates. The fundamental principle behind the development of the blade gap adjustment device is to ensure the stability of the rolling shear's shearing path. This is because rolling shears with a width of 5500mm or more have blade lengths of at least 5700mm. Achieving parallel adjustment of the blade gap across such a large width is extremely challenging. Not only must the blade gap adjustment device be stable and reliable during the adjustment phase, but more importantly, it must ensure that the entire upper blade holder and blades can withstand the alternating high-load impacts of the shearing process without blade gap jitter during continuous rolling shearing of high-strength steel plates with a width greater than 5500mm and a thickness of 6-50mm. This provides reliable and stable support for the upper blade holder and blades, ensuring the equipment configuration is technologically mature, structurally advanced, and operationally stable. This ensures the equipment achieves high precision, strong thickness shearing capacity, good cut quality, and low vibration and noise.

[0020] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the scope of protection of the present invention.

Claims

1. A large-scale rolling shear blade gap adjustment device, comprising a reduction motor (1), a primary synchronous coupling (2), a proximal lifter (3), a secondary synchronous coupling (6), a distal lifter (7), a pin (8), a fork rod (9), a horizontally movable cam (11), a cam mechanism joint surface slide (12), and a vertically movable cam (13); characterized in that: The reduction motor (1) is located between the two proximal elevators (3), and the two distal elevators (7) are located at both ends of the series arrangement. The reduction motor (1) is connected to the proximal elevator (3) by means of a primary synchronous coupling (2), and the two proximal elevators (3) are then connected to the distal elevator (7) by means of a secondary synchronous coupling (6).

2. A large-scale rolling shear blade gap adjustment device according to claim 1, characterized in that: The invention also includes a sensor bracket (4) and a linear displacement sensor (5), which adjusts the shearing gap of the lower shearing blade box (19) and the upper shearing blade box (20) by changing the thickness of the inclined wedge mechanism located between the main reduction box (16) and the upper tool holder (18) of the large rolling shear machine. The four horizontal movable inclined wedges (11) in the four inclined wedge mechanisms can only move in the horizontal direction, and the four vertical movable inclined wedges (13) rely on the drive system to achieve synchronous lifting and lowering and act on the fixed main reduction box (16) of the rolling shear machine and the horizontal movable inclined wedge (11), thereby pushing the upper tool holder (18) and the shearing blade to change the shearing gap. The shearing gap value of the rolling shear machine can be detected by the linear displacement sensor (5).

3. The large-scale rolling shear blade gap adjustment device according to claim 1, characterized in that: The device relies on four sets of inclined wedge mechanisms to adjust the shear blade gap, uses four lifters to drive fork rods (9) to drive the vertically movable inclined wedges (13), and the power comes from a reduction motor (1), wherein the reduction motor (1) and the lifters are arranged in series to ensure rigid mechanical synchronization.

4. A large-scale rolling shear blade gap adjustment device according to claim 1, characterized in that: The shearing blade gap adjustment device of a large-scale rolling shearing machine relies on four sets of bevel wedge mechanisms to adjust the shearing blade gap. The slope ratio of the working bevel of the bevel wedge mechanism is 1:10, that is, when the elevator drives the vertical moving bevel wedge (13) to rise or fall, the horizontal moving bevel wedge (11) pushes the upper tool holder (18) of the large-scale rolling shearing machine forward or backward by 1 / 10 of the distance moved by the vertical moving bevel wedge (13).

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