Flexible swing roller and wide and heavy plate hot segmental cutting system with same

Abstract

The application discloses a flexible swing roller and a wide and thick plate hot segmented cutting system with the same, and belongs to the technical field of hot-rolled wide and thick steel plate and medium-thick steel plate production, and comprises a swing roller body rotatable at one end and a swing control assembly. The swing control assembly comprises a counterweight, a force transmission member and a control assembly, the counterweight and the force transmission member are assembled on the same bearing mechanism and form a lever, and the force transmission member abuts below the swing roller body. The control assembly is respectively in transmission connection with the counterweight, the force transmission member and the bearing mechanism, the relative position relationship between the counterweight and the force transmission member and a second hinged seat can be adjusted to change the acting torque, or the force transmission member can stop outputting the torque to the swing roller body. The above technical scheme adopted by the application overcomes the additional harmful bending moment in the use process through reasonable structure optimization, and solves the warping problem of the cut steel plate of the commonly used hydraulic cylinder balance type swing roller.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled wide and thick steel plates and medium and thick steel plates production technology, and in particular to a flexible oscillating roller conveyor and a hot segmented shearing system for wide and thick plates having the same. Background Technology

[0002] The hot slitting shear for heavy and medium-thick steel plates is an essential piece of equipment in production lines and a key component for improving production efficiency. A swing roller conveyor is installed after the hot slitting shear to transport the steel plates and assist in shearing. The performance of the swing roller conveyor directly affects the shearing quality, especially for hot-plate shearing. The shearing process is as follows: the steel plate to be sheared is transported to the designated position by the roller conveyor. After the plate stops, the swing roller conveyor swings downwards to its lowest position, the clamping device presses the plate down, and the shearing machine begins shearing. After shearing is complete, the clamping device is raised, the swing roller conveyor swings to its highest position, and finally, the sheared steel plate is transported to the cooling bed, ending the shearing process.

[0003] The inventors discovered that during the use of single-cylinder and double-cylinder oscillating roller conveyors, warping occurred in a small area at the final cut edge after hot metal shearing, resulting in substandard shearing quality and requiring secondary shearing, thus reducing production efficiency and material yield. The inventors conducted a systematic analysis and detailed calculation of the shearing process. The analysis showed that after the oscillating roller conveyor descends, an approximately 4-meter gap is formed between the lower shear blade (or worktable) and the last oscillating roller. The weight of the steel plate in the gap is borne by the lower shear blade and the roller. Initially, the weight of the steel plate is borne by the entire width direction. As the shearing process progresses, the unsheared portion in the width direction bears the weight of the gapped steel plate, causing a sharp increase in stress in the unsheared section. Because hot metal has a low yield strength, irreversible plastic deformation occurs when its yield strength is reached. This is the root cause of the warping problem in the final shearing region.

[0004] In existing technology, the counterweight-balanced oscillating roller conveyor can continuously apply an upward force to the sheared steel plate, but it has the following problems: 1. The weight of the counterweight is as high as tens of tons, and it is located below the equipment, making the equipment installation difficult; 2. The counterweight will continuously exert an upward force and additional bending moment on the roller conveyor support, resulting in an unoptimized stress state and affecting its service life; 3. The constant presence of balancing force causes the roller conveyor to fall uncontrollably during equipment maintenance, requiring the addition of complex tooling, resulting in low maintenance efficiency and high safety risks.

[0005] While hydraulic cylinder-balanced oscillating roller conveyors offer good controllability, they cannot continuously apply upward force to the sheared steel plate, leading to warping issues.

[0006] Therefore, in order to solve the problem of warping at the end of hot metal shearing, it is necessary to solve the problem of steel plate suspension, and a new type of oscillating roller conveyor structure is urgently needed. Summary of the Invention

[0007] The purpose of this invention is to provide a flexible oscillating roller conveyor for hot segmentation shearing of thick plates, so as to at least solve the problem of warping of steel plates after shearing using commonly used hydraulic cylinder balanced oscillating roller conveyors.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention provides a flexible oscillating roller conveyor, comprising: The oscillating roller conveyor body has one end mounted on the main frame of the production line via a first hinge seat, and can oscillate back and forth in the vertical direction around the hinge axis. The swing control assembly includes a counterweight, a force transmission component, and a control component. The counterweight and the force transmission component are assembled on the same bearing mechanism and form a lever through a second hinge seat. The force transmission component abuts against the lower part of the swing roller body. The control component can be connected to the counterweight, the force transmission component, and the bearing mechanism respectively. The torque can be changed by adjusting the relative positional relationship between the counterweight and the force transmission component and the second hinge seat, or the force transmission component can be stopped from outputting torque to the swing roller body.

[0009] Preferably, the control component includes: The force transmission member drive unit can drive the force transmission member to move away from or towards the second hinge seat in a horizontal direction. The force transmission member can move to directly above the second hinge seat and stop outputting torque to the swing roller body.

[0010] Preferably, the control component further includes: The counterweight drive unit can drive the counterweight horizontally away from or towards the second hinge seat to adjust the torque output by the swing control assembly.

[0011] Preferably, the control component further includes: The bearing mechanism drive unit is arranged below the side of the bearing mechanism where the counterweight is mounted. It can drive the bearing mechanism to rotate around the second hinge seat and release the contact state between the force transmission member and the swing roller body, so that the swing roller body swings downward due to its own weight.

[0012] Preferably, the force transmission component drive unit, the counterweight component drive unit, and the load-bearing mechanism drive unit are hydraulic cylinders.

[0013] Preferably, each hydraulic cylinder is equipped with a displacement sensor to monitor the extension and retraction position of each hydraulic cylinder in real time.

[0014] Preferably, the main frame of the production line is provided with an upper limit stop to limit the maximum position of the swinging roller body when it swings upward to not exceed the horizontal state.

[0015] On the other hand, the invention also provides a hot slitting shearing system for thick plates, comprising: A shearing machine, comprising an upper shear blade and a lower shear blade; The aforementioned flexible oscillating roller conveyor is installed on the outlet side of the shearing machine, with one end having a first hinge seat positioned away from the shearing machine; A multi-functional detector is installed above the flexible oscillating roller conveyor near the shearing machine outlet to detect the parameters of the steel plate to be sheared. The control system is communicatively connected to the control components of the multifunctional detector and the flexible oscillating roller conveyor, and automatically calculates and adjusts the workload of the control components based on the steel plate parameters detected by the multifunctional detector.

[0016] Preferably, the thick plate hot slitting shearing system has three working states: shearing, steel passing, and maintenance; In the shearing state, the control component drives the force transmission component and the counterweight component to move away from the second hinge seat. Under the action of the lever, the force transmission component applies a torque to the swing roller body. When the steel is in the passing state, the control component drives the force transmission component to move to directly above the second hinge seat. At this time, its center line is aligned with the center axis of the hinge shaft of the second hinge seat in the vertical direction. The force transmission component stops applying torque to the swing roller body to ensure that it is always a rigid support during the conveying process. During maintenance, the control component drives the force transmission member to move away from the second hinge seat, drives the counterweight member to move closer to the second hinge seat, and drives the bearing mechanism to rotate around the second hinge seat, thereby releasing the contact between the force transmission member and the swing roller conveyor body, so that the swing roller conveyor body swings downward due to its own weight, which facilitates maintenance.

[0017] Preferably, the distance between the centerline of the first roller on the side of the swing roller conveyor body closest to the shearing machine and the outer side of the shearing blade of the shearing machine is 350-450mm.

[0018] In summary, the flexible oscillating roller conveyor and the thick plate hot slitting shearing system provided by the present invention have the following beneficial effects: (1) Solving the problem of warping during hot steel plate shearing: By continuously applying upward support force to the steel plate through counterweights, the problem of warping at the end caused by the steel plate being suspended during shearing is effectively solved, the shearing quality is improved, secondary shearing is reduced, and production efficiency and material yield are improved.

[0019] (2) Eliminate harmful additional bending moment: When passing through steel, by aligning the center line of the force transmission component with the center axis of the hinge shaft of the second hinge seat in the vertical direction, the additional bending moment of the counterweight on the swing roller body is eliminated, the stress state of the structure is optimized, and the service life of the equipment is extended.

[0020] (3) High controllability: Each hydraulic cylinder is equipped with a displacement sensor, which can accurately adjust the position of the counterweight and force transmission components according to the weight of the steel plate, so as to achieve precise control and adapt to the shearing requirements of steel plates of different specifications.

[0021] (4) Safe and convenient maintenance: By setting the maintenance status, the swing roller conveyor body can be lowered in a controlled manner under its own weight, which solves the problems of difficult maintenance and high safety risks of traditional heavy hammer swing roller conveyors.

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the thick plate hot segmented shearing system of the present invention; Figure 2 This is a schematic diagram of the structure of the oscillating roller conveyor body and the oscillating control assembly in the hot slitting shear system for wide and thick plates of the present invention; Figure 3 This is a schematic diagram of the principle of the hot segmented shearing system for wide and thick plates of the present invention; Figure 4 This is a schematic diagram illustrating the principle of the hot segmented shearing system for thick plates of the present invention when passing through steel.

[0024] Figure label: 1. Steel plate to be sheared; 2. Shearing machine; 2.1. Upper shear blade; 2.2. Lower shear blade; 3. Multifunctional testing instrument; 4. Swinging roller conveyor body; 4.1 Roller conveyor support; 4.2 Roller; 4.3 First hinge seat; 5. Swing control assembly; 5.1. Load-bearing mechanism; 5.2. Counterweight; 5.3. Swing wheel; 5.4. Second hinge seat; 5.5. Counterweight hydraulic cylinder; 5.6. Swing wheel hydraulic cylinder; 5.7. Load-bearing mechanism hydraulic cylinder; 6. Upper limit stop block. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Example 1 As shown in the figure, this embodiment provides a hot segmented shearing system for thick plates. The system includes a steel plate to be sheared 1, a shearing machine 2, a multi-functional detector 3, a swing roller conveyor body 4, a swing control assembly 5, and an upper limit stop 6.

[0027] The shearing machine 2 includes an upper shear blade 2.1 and a lower shear blade 2.2, which shear the steel plate 1 to be sheared by moving the blades up and down. The multi-functional detector 3 is installed above the oscillating roller conveyor body 4 near the outlet of the shearing machine 2, and is used to detect parameters such as the thickness, width, and temperature of the steel plate 1 to be sheared.

[0028] The oscillating roller conveyor body 4 includes a roller conveyor support 4.1, rows of rollers 4.2, and a first hinge seat 4.3. The roller conveyor support 4.1 is mounted on the main frame of the production line via the first hinge seat 4.3 and can reciprocate vertically about the hinge axis of the first hinge seat 4.3. The rollers 4.2 are mounted on the roller conveyor support 4.1 and are used to support and convey steel plates. An upper limit stop 6 is provided on the main frame of the production line to limit the maximum position of the oscillating roller conveyor body 4 when it swings upward to no more than horizontal.

[0029] The swing control assembly 5 includes a load-bearing mechanism 5.1, a counterweight, and a force transmission component. In this embodiment, the counterweight is a hammer 5.2, and the force transmission component is a swing wheel 5.3. It also includes a second hinge seat 5.4, a counterweight drive unit, a force transmission component drive unit, and a load-bearing mechanism drive unit. In this embodiment, each drive unit adopts an electro-hydraulic cylinder, namely, a hammer hydraulic cylinder 5.5, a swing wheel hydraulic cylinder 5.6, and a load-bearing mechanism hydraulic cylinder 5.7.

[0030] The bearing mechanism 5.1 is hinged to the main frame of the production line via the second hinge seat 5.4. The counterweight 5.2 and the swing wheel 5.3 are mounted on the bearing mechanism 5.1 and located on both sides of the second hinge seat 5.4, thus forming a lever structure. The swing wheel 5.3 is located on the upper part of the bearing mechanism 5.1 and abuts against the lower part of the swing roller conveyor body 4; the counterweight 5.2 is located on the lower part of the bearing mechanism 5.1 and serves as the counterweight end of the lever.

[0031] The counterweight hydraulic cylinder 5.5 can drive the counterweight 5.2 horizontally away from or towards the second hinge seat 5.4 to adjust the magnitude of the torque generated by the counterweight 5.2. The swing wheel hydraulic cylinder 5.6 can drive the swing wheel 5.3 horizontally away from or towards the second hinge seat 5.4. When the swing wheel 5.3 moves directly above the second hinge seat 5.4, it stops outputting torque to the swing roller body 4. The bearing mechanism hydraulic cylinder 5.7 is arranged below the side of the bearing mechanism 5.1 where the counterweight 5.2 is mounted. It can drive the bearing mechanism 5.1 to rotate around the hinge axis of the second hinge seat 5.4, thereby releasing the contact between the swing wheel 5.3 and the swing roller body 4.

[0032] In this embodiment, the hydraulic cylinder 5.5 of the counterweight, the hydraulic cylinder 5.6 of the swing wheel, and the hydraulic cylinder 5.7 of the bearing mechanism are all equipped with displacement sensors to monitor the extension and retraction positions of each hydraulic cylinder in real time and achieve precise control.

[0033] In this embodiment, the distance between the centerline of the first roller 4.2 on the side of the oscillating roller conveyor body 4 closest to the shearing machine 2 and the outer side of the shearing blade of the shearing machine 2 is set to 400mm, preferably within the range of 350-450mm. This distance ensures effective support during shearing while avoiding interference between the roller and the shearing machine.

[0034] The core technical concept of this invention is: by utilizing the lever structure formed on the bearing mechanism 5.1 by the counterweight (hammer 5.2) and the force transmission component (swing wheel 5.3), the output torque can be flexibly adjusted by adjusting the relative positional relationship between the counterweight and the force transmission component and the second hinge seat 5.4.

[0035] According to the lever principle, the torque is equal to the force multiplied by the lever arm.

[0036] In this invention, when the force transmission member (swinging wheel 5.3) moves outward relative to the second hinge seat 5.4, the lever arm of the force transmission member increases, and the upward torque it applies to the swing roller body 4 increases. When the counterweight (weight 5.2) moves outward relative to the second hinge seat 5.4, the lever arm of the counterweight increases, and the torque generated by the entire lever system increases. When the force transmission component (swing wheel 5.3) moves directly above the second hinge seat 5.4, the center line of the force transmission component is aligned vertically with the center axis of the hinge shaft of the second hinge seat 5.4. At this time, the lever arm of the force transmission component relative to the hinge shaft is zero, and the weight of the counterweight no longer transmits torque to the swing roller body 4 through the force transmission component. The entire system becomes a rigid support and is very stable.

[0037] Example 2 Based on Example 1, this example details the three working states of the thick plate hot segmentation shearing system and their switching process.

[0038] I. Shearing State When the steel plate 1 to be sheared needs to be sheared, the system switches to shearing mode. At this time: The control system calculates the weight of the suspended section of the steel plate based on the steel plate parameters (thickness, width, temperature, etc.) detected by the multi-functional detector 3; based on the calculation results, the control system determines the target extension positions of the counterweight hydraulic cylinder 5.5 and the swing wheel hydraulic cylinder 5.6. The working end of the swing wheel hydraulic cylinder 5.6 extends to the front position and drives the swing wheel 5.3 to move away from the second hinge seat 5.4; The working end of the hydraulic cylinder 5.5 extends to the front position and drives the hammer 5.2 to move away from the second hinge seat 5.4; Subsequently, the clamping device (built into the production line, not strongly related to the core principle of the technical solution of this application, and belonging to the equipment known in the field) clamps the steel plate 1 to be sheared, and the shearing machine 2 begins shearing.

[0039] During the shearing process, the upper shear blade 2.1 moves downward, generating a shearing force. This shearing force acts on the oscillating roller conveyor body 4 through the steel plate, causing the oscillating roller conveyor body 4 to swing downward around the first hinge seat 4.3. Simultaneously, under the leverage effect, the gravity of the counterweight 5.2 applies a continuous upward supporting force to the oscillating roller conveyor body 4 through the oscillating wheel 5.3. This supporting force effectively supports the weight of the suspended section of the steel plate, preventing warping deformation of the steel plate due to stress concentration at the end of the shearing process.

[0040] When the shearing is completed and the upper shear blade 2.1 moves upward, under the upward support force provided by the swing wheel 5.3, the swing roller body 4 swings upward around the first hinge seat 4.3 until it touches the upper limit stop block 6 and stops, returning to the horizontal state.

[0041] II. Steel-passing condition When the steel plate needs to be conveyed to the cooling bed after shearing, or when steel plates that do not need to be sheared are passed directly through, the system switches to the steel-passing state. At this time: When the hydraulic cylinder 5.6 of the swing wheel is in the retracted state, it drives the swing wheel 5.3 to move towards the second hinge seat 5.4 and directly above the second hinge seat 5.4. At this time, the central axis of the swing wheel 5.3 is parallel and aligned with the central axis of the hinge shaft of the second hinge seat 5.4 in the vertical direction.

[0042] The mechanical state at this point is analyzed as follows: The gravity of the weight 5.2 acts downwards in a vertical direction, and this force needs to be transmitted to the swing wheel 5.3 through a lever. However, when the swing wheel 5.3 is directly above the second hinge seat 5.4, the lever arm of the swing wheel 5.3 relative to the hinge axis of the second hinge seat 5.4 is zero. According to the principle of torque balance, when the lever arm is zero, the torque is zero. Therefore, the gravity of the weight 5.2 no longer generates any additional torque on the swing roller body 4 through the swing wheel 5.3, and the gravity is entirely borne by the second hinge seat 5.4.

[0043] This design has the following advantages: the oscillating roller conveyor body 4 does not bear the additional force of the counterweight, and the stress state of the structure is optimized; the entire oscillating roller conveyor body 4 forms a rigid support, which can maintain stability even when conveying heavy steel plates; it avoids the structural fatigue problem caused by the continuous action of the counterweight force in the traditional counterweight oscillating roller conveyor, and extends the service life of the equipment.

[0044] III. Maintenance Status When shearing machine 2 needs maintenance or replacement of the upper shear blade 2.1 and lower shear blade 2.2, the oscillating roller conveyor body 4 needs to be lowered to a low position to free up operating space. Since there is no steel plate at this time, there is no downward shearing force, and the oscillating roller conveyor body 4 cannot descend on its own. To solve this problem, the system switches to maintenance mode: The working end of the swing wheel hydraulic cylinder 5.6 extends to the front position and drives the swing wheel 5.3 to move away from the second hinge seat 5.4; The working end of the hydraulic cylinder 5.5 retracts to the rear position and drives the hammer 5.2 to move to the rear position closer to the second hinge seat 5.4; The hydraulic cylinder 5.7 of the bearing mechanism extends vertically upward, and its working end applies an upward force to the bearing mechanism 5.1, driving the bearing mechanism 5.1 to rotate around the hinge axis of the second hinge seat 5.4. Since the hydraulic cylinder 5.7 of the bearing mechanism is arranged below the side of the counterweight 5.2, the rotation trend of the bearing mechanism 5.1 is that the side of the counterweight 5.2 rises and the side of the swing wheel 5.3 falls. As the bearing mechanism 5.1 rotates, it drives the swing wheel 5.3 to lower, thus releasing it from contact with the swing roller conveyor body 4; the swing roller conveyor body 4 swings downward due to its own weight and descends to a low position. Then, the oscillating roller body 4 can be locked by means of mechanical blocks or other locking methods, so that maintenance or replacement of the shear blades can be carried out.

[0045] Mechanical analysis shows that during operation, the counterweight 5.2 moves closer to the second hinge seat 5.4, reducing its lever arm; while the swing wheel 5.3 moves away from the second hinge seat 5.4, increasing its lever arm. This configuration results in less force being required when the hydraulic cylinder 5.7 of the bearing mechanism drives the bearing mechanism 5.1 to rotate, and the system can more easily release the contact between the swing wheel 5.3 and the swing roller body 4.

[0046] Compared with traditional weighted oscillating roller conveyors, the maintenance state design of this invention does not require additional complex tooling to overcome the upward force of the weight. The oscillating roller conveyor body 4 can descend smoothly and in a controlled manner under its own weight, which greatly improves maintenance efficiency and safety.

[0047] It should be noted that, for the purposes of this invention, the lever structure formed by the counterweight and the force transmission component, and the technical concept of changing the torque by adjusting their relative position to the second hinge seat, are the core inventive points of this invention and are described in detail in the specification. Some other conventional mechanical structures and connection methods, such as the specific installation form of the roller conveyor support and the roller, and the connection method between the hydraulic cylinder and the load-bearing mechanism, are briefly or omitted in the specification. Furthermore, all control components mentioned in the specification employ mature industrial control systems. It should be understood that this invention includes not only the structures mentioned in the specification but also the equipment and structures necessary for industrial control, as well as other unmentioned but reasonable structures and components in the art or known to those skilled in the art.

[0048] Finally, it should be noted that the described embodiments are merely some, not all, of the embodiments of the present invention. Those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents; that is, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A flexible oscillating roller conveyor, characterized in that, include: The oscillating roller conveyor body has one end mounted on the main frame of the production line via a first hinge seat, and can oscillate back and forth in the vertical direction around the hinge seat. The oscillation control assembly includes a counterweight, a force transmission component, and a control component. The counterweight and the force transmission component are assembled on the same bearing mechanism and form a lever through a second hinge seat. The first hinge seat is installed on the main frame of the production line, and the force transmission component abuts against the lower part of the oscillation roller conveyor body. The control component can be connected to the counterweight, the force transmission component and the bearing mechanism respectively. The torque can be changed by adjusting the relative positional relationship between the counterweight and the force transmission component and the second hinge seat, or the force transmission component can be stopped from outputting torque to the swing roller body. The control component includes: a force transmission member drive unit, which can drive the force transmission member to move away from or near the second hinge seat in a horizontal direction, the force transmission member can move to directly above the second hinge seat, and stop outputting torque to the swing roller body; The counterweight drive unit can drive the counterweight horizontally away from or towards the second hinge seat to adjust the torque output by the swing control assembly; the load-bearing mechanism drive unit is arranged below the side of the load-bearing mechanism on which the counterweight is mounted, and can drive the load-bearing mechanism to rotate around the second hinge seat and release the contact state between the force transmission member and the swing roller body, so that the swing roller body swings downward due to its own weight.

2. The flexible oscillating roller conveyor according to claim 1, characterized in that, The drive unit for the force transmission component, the drive unit for the counterweight component, and the drive unit for the load-bearing mechanism are hydraulic cylinders.

3. The flexible oscillating roller conveyor according to claim 2, characterized in that, Each hydraulic cylinder is equipped with a displacement sensor to monitor the extension and retraction position of each hydraulic cylinder in real time.

4. The flexible oscillating roller conveyor according to claim 1, characterized in that, The main frame of the production line is equipped with an upper limit stop to limit the maximum position of the swinging roller body when it swings upward to not exceed the horizontal state.

5. A hot slitting shearing system for thick plates, characterized in that, include: A shearing machine, comprising an upper shear blade and a lower shear blade; The flexible oscillating roller conveyor as described in any one of claims 1-4 is installed on the outlet side of the shearing machine, with one end having a first hinge seat arranged away from the shearing machine; A multi-functional detector is installed above the flexible oscillating roller conveyor near the shearing machine outlet to detect the parameters of the steel plate to be sheared. The control system is communicatively connected to the control components of the multifunctional detector and the flexible oscillating roller conveyor, and automatically calculates and adjusts the workload of the control components based on the steel plate parameters detected by the multifunctional detector.

6. A hot slitting shearing system for thick plates according to claim 5, characterized in that, The distance between the centerline of the first roller on the side of the swing roller conveyor closest to the shearing machine and the outer side of the shearing blade is 350-450mm.

Images