Double-row differential moving carrier roller device of double-side shears

Abstract

The invention discloses a double-row differential moving carrier roller device of a double-side shear and belongs to the technical field of rolled steel finishing equipment. The device comprises a frame base, a track of the frame base is provided with a first inlet support trolley, a second inlet support trolley, a first outlet support trolley and a second outlet support trolley, the first inlet support trolley and the first outlet support trolley are fixedly connected with a first carrier roller support, and the second inlet support trolley and the second outlet support trolley are fixedly connected with a second carrier roller support. The power input mechanism, the first inlet support trolley, the second inlet support trolley, the first outlet support trolley and the second outlet support trolley are jointly connected with a power input mechanism used for being connected with a movable side shearing machine of the double-side shear. Differential transmission mechanisms are arranged between the frame base and the first inlet support trolley, the second inlet support trolley, the first outlet support trolley and the second outlet support trolley. Deviation and surface damage of the plate strip can be effectively prevented, and the stability and reliability of the shearing process are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of steel rolling finishing equipment, specifically relating to a double-sided shear double-row differential moving idler device. Background Technology

[0002] In the steel industry, with the increasing demand for large-format, wide-width steel products from sectors such as military, nuclear energy, shipbuilding, bridge construction, and building construction, the maximum width of plate and strip processed by medium and heavy plate and strip finishing units has reached 5600 mm. As the core equipment for finishing shearing, double-sided shears are developing towards larger scale, automation, and intelligence, with increasingly higher requirements for shearing quality and efficiency.

[0003] Idler rollers are crucial auxiliary equipment in double-sided shearing, and their performance directly affects the smoothness of strip conveying, shearing accuracy, and surface quality. Existing idler roller devices are typically fixed or single-row movable. When dealing with wide strips, these devices have significant limitations: they cannot dynamically and optimally adjust the support point positions according to the strip width, easily leading to uneven distribution of support force, localized friction concentration, and consequently, problems such as strip misalignment and surface scratches. This makes it difficult to meet the demands for smooth and efficient shearing and conveying of wide, high-quality strips.

[0004] Therefore, developing a double-row idler roller device that can dynamically adapt to changes in plate width, provide uniform and reliable support, and be precisely synchronized with the shearing host is of great significance for improving the overall technical level of the wide and thick plate finishing production line. Summary of the Invention

[0005] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a double-sided shearing double-row differential moving idler device. This invention can effectively prevent strip material deviation and surface damage, and improve the stability and reliability of the shearing process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] This invention provides a double-sided scissor double-row differential moving idler device, characterized in that it includes a frame base, on which a track is provided. An inlet support trolley 1, an inlet support trolley 2, an outlet support trolley 1, and an outlet support trolley 2 are mounted on the track of the frame base. Idler support 1 is fixedly connected to inlet support trolley 1 and outlet support trolley 1, and idler support 2 is fixedly connected to inlet support trolley 2 and outlet support trolley 2. Multiple idlers are respectively connected to idler support 1 and idler support 2. The power transmission... The inlet mechanism, together with the inlet support trolley one, the inlet support trolley two, the outlet support trolley one, and the outlet support trolley two, is connected to a power input mechanism for connecting to a mobile side-shearing machine with double-sided shears. A differential transmission mechanism is provided between the frame base and the inlet support trolley one, the inlet support trolley two, the outlet support trolley one, and the outlet support trolley two. The differential transmission mechanism is used to convert the unidirectional motion of the mobile side-shearing machine into motion that drives the roller support one and the roller support two to move differentially along the track.

[0008] Furthermore, the frame base includes an inlet base and an outlet base arranged in a mirror arrangement, and a crossbeam connecting the inlet base and the outlet base. The track is disposed on the inlet base, the outlet base and the crossbeam. The power input mechanism includes a movable chain seat connected to the movable side shear machine via a fixed connecting block, and a movable chain disposed within the movable chain seat.

[0009] Furthermore, the differential transmission mechanism includes a fixed chain one and a fixed chain two fixedly mounted on the frame base. Each of the inlet support trolley one, the inlet support trolley two, the outlet support trolley one, and the outlet support trolley two is provided with a sprocket one that meshes with the moving chain. The inlet support trolley two and the outlet support trolley two are also provided with a sprocket two that meshes with the fixed chain one, and the inlet support trolley one and the outlet support trolley one are also provided with a sprocket three that meshes with the fixed chain two.

[0010] Furthermore, the sprockets 2 on the inlet support trolley 2 and the outlet support trolley 2 are coaxially arranged with the sprocket, and the sprockets 3 on the inlet support trolley 1 and the outlet support trolley 1 are coaxially arranged with the sprocket.

[0011] Furthermore, each of the aforementioned support trolleys also includes a set of traveling wheels, which includes a support trolley wheel one and a support trolley wheel two. The sprocket one, the sprocket two, or the sprocket three are mounted on the axle of the support trolley wheel two.

[0012] Furthermore, the second wheel of the support trolley is mounted on the support trolley via the support trolley bearing.

[0013] Furthermore, the first sprocket, the second sprocket, and the third sprocket have the same pitch and their number of teeth are in a multiple relationship.

[0014] Furthermore, the number of teeth on sprocket one is twice the number of teeth on sprocket two, the number of teeth on sprocket three is twice the number of teeth on sprocket one, the moving speed and displacement of idler bracket two and the idler on it are one-third of the moving speed and displacement of the mobile side shear machine, and the moving speed and displacement of idler bracket one and the idler on it are two-thirds of the moving speed and displacement of the mobile side shear machine.

[0015] Furthermore, it also includes multiple pressure rollers, which are mounted on each of the bracket trolleys and are used to guide and limit the movement of the moving chain seat and the moving chain.

[0016] Furthermore, it also includes a support for supporting the suspended end of the movable chain seat, as well as a protective cover and bracket installed on the frame base.

[0017] The beneficial effects of the present invention.

[0018] This invention utilizes an innovative differential transmission mechanism to transform the single input of the mobile side shear into the differential output of two rows of idlers. These two rows of idlers automatically follow the main machine at preset, different speeds, achieving dynamic and precise matching between the support position and the shearing width, and seamlessly integrating the shearing process with the conveying action. The differential movement of the double-row idlers ensures that two optimally distributed linear support areas are always provided for the strip material within the full width adjustment range. This effectively avoids the localized friction concentration that may occur with traditional single-point or single-row support, fundamentally preventing surface scratches and deviation problems in medium and heavy plates and strips during conveying, significantly improving shearing quality and yield, while also enhancing the operational reliability of the idler system itself. Furthermore, it directly utilizes the width adjustment power source of the double-sided shear equipment, eliminating the need for an additional independent drive system, simplifying the overall structure, and reducing energy consumption and cost. The sprocket and chain drive is a mature and reliable mechanical transmission method. The dual-wheel design of the support trolley, along with auxiliary structures such as pressure rollers and supports, collectively ensures stable and reliable operation of the device under heavy load conditions. Capable of automatically adapting to a wide range of sheet and strip specifications, this device boasts excellent versatility. Its design philosophy of achieving complex motion logic with a simple mechanical structure provides new insights for the development of auxiliary equipment in large-scale metallurgical equipment. It is not only applicable to various double-sided shears but also offers valuable lessons for other sheet metal processing equipment requiring coordinated movement at multiple support points. It possesses high theoretical value and broad engineering application prospects. Attached Figure Description

[0019] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] Figure 1 This is a three-dimensional assembly diagram of the present invention.

[0021] Figure 2 This is a two-dimensional side view of the present invention.

[0022] Figure 3 This is a partial cross-sectional view of the support wheel portion of the entrance support trolley of the present invention.

[0023] Figure 4 This is a partial cross-sectional view of the second wheel portion of the support trolley in the entrance support trolley of the present invention.

[0024] Figure 5 This is a partial cross-sectional view of the second part of the support trolley wheel in the second entrance support trolley of the present invention.

[0025] Figure 6 This is the invention Figure 3 A partial sectional view of section AA (at the moving chain).

[0026] Figure 7 This is the invention Figure 4 A partial sectional view of the middle BB section (two fixed chain locations).

[0027] Figure 8 This is the invention Figure 5 A partial sectional view of the CC section (one point where the chain is fixed).

[0028] The markings in the diagram are as follows: 1 is the inlet base, 2 is the outlet base, 3 is the fixed connecting block, 4 is the moving chain seat, 5 is the sprocket one, 6 is the outlet support trolley one, 7 is the outlet support trolley two, 8 is the support, 9 is the idler roller, 10 is the idler roller support one, 11 is the idler roller support two, 12 is the inlet support trolley two, 13 is the sprocket two, 14 is the inlet support trolley one, 15 is the sprocket three, 16 is the fixed chain one, 17 is the fixed chain two, 18 is the crossbeam, 19 is the protective cover and support, 20 is the moving chain, 21 is the support trolley bearing, 22 is the support trolley wheel one, 23 is the support trolley wheel two, and 24 is the pressure wheel. Detailed Implementation

[0029] As shown in the accompanying drawings, this embodiment provides a double-sided scissor double-row differential moving idler device. The load-bearing and guiding foundation of the device is a rigid frame base. The frame base is composed of an inlet base 1, an outlet base 2, and two crossbeams 18 connected by high-strength bolts. The inlet base 1 and the outlet base 2 are welded structures and are arranged in a mirror symmetrical manner. The upper surfaces of the inlet base 1, the outlet base 2, and the crossbeams 18 are all machined with precise tracks, which together form two parallel annular closed guide rails.

[0030] Two stationary chains, namely fixed chain 16 and fixed chain 2 17, are firmly installed at specific positions on the base of the frame. The power comes from the mobile side-shearing machine of the double-sided shear. The mobile side-shearing machine's frame is rigidly connected to the mobile chain seat 4 through the fixed connecting block 3. A closed-loop mobile chain 20 is installed in the chain groove of the mobile chain seat 4. The overhanging section of the mobile chain seat 4 extending towards the middle of the frame is supported by the support 8 fixed on the foundation to ensure its rigidity and prevent sagging or shaking due to chain tension.

[0031] The four support trolleys are the core carriers for performing the movement function. They are the entrance support trolley 14, the entrance support trolley 2 12, the exit support trolley 1 6, and the exit support trolley 2 7. These support trolleys are mounted on the frame track by the walking wheel sets at their bottom.

[0032] Each support trolley's traveling wheel set includes two wheels, namely support trolley wheel one 22 and support trolley wheel two 23. Support trolley wheel one 22 serves only as a driven wheel, providing auxiliary support and guidance. The axle of support trolley wheel two 23 is mounted on the trolley body through support trolley bearing 21. The two ends of the axle extend outward, becoming the mounting shaft for the transmission sprocket.

[0033] The configuration of the drive sprockets is key to achieving differential speed. On the inlet support trolley 14 and the outlet support trolley 16, sprocket 5 is mounted inside the axle of support trolley wheel 23, and sprocket 3 15 is coaxially mounted on the outside of the axle. On the inlet support trolley 22 and the outlet support trolley 27, sprocket 5 is mounted inside the axle of support trolley wheel 23, and sprocket 2 13 is coaxially mounted on the outside of the axle.

[0034] The sprocket 15 on all four support trolleys engages with the moving chain 20 from the moving side shear machine; the sprocket 23 on the inlet support trolley 212 and the outlet support trolley 27 engages with the fixed chain 16; and the sprocket 315 on the inlet support trolley 14 and the outlet support trolley 16 engages with the fixed chain 217.

[0035] To suppress the up-and-down movement of the moving chain 20 during transmission, each support trolley is also equipped with a pressure roller 24, which presses tightly against the side or top surface of the moving chain seat 4, providing effective guidance and stability. The entire device is externally equipped with a protective cover and support frame 19 to meet on-site safety protection requirements.

[0036] The first idler bracket 10 is fixedly connected to the top of the inlet support trolley 14 and the outlet support trolley 6 by bolts. The second idler bracket 11 is fixedly connected to the top of the inlet support trolley 22 and the outlet support trolley 27 by bolts. Multiple idlers 9 are evenly installed on the first idler bracket 10 and the second idler bracket 11 through bearing seats, thus forming two rows of height-adjustable and independently movable support roller conveyors on the inlet and outlet sides.

[0037] Working principle: When the double-sided shear adjusts the cutting width according to the production plan, its mobile side shear machine begins to move horizontally. The mobile side shear machine drives the mobile chain seat 4 and the internal mobile chain 20 to move synchronously through the fixed connecting block 3. The linear motion of the mobile chain 20 drives the four sprockets 5 meshing with it to rotate. Since the sprockets 5 are coaxial with the bracket trolley wheels 23, the rotation of the sprockets 5 is directly converted into the rolling of the bracket trolley wheels 23 on the track, thereby generating a tendency to move the entire bracket trolley.

[0038] The differential motion originates from the constraint of the fixed chain. When the trolley wants to move, sprocket 13 or sprocket 15 on it will be forced to roll purely along the fixed chain 16 or fixed chain 27. Sprockets 15, sprocket 23, and sprocket 35 have the same pitch but different numbers of teeth. Assuming that sprocket 23 has Z teeth, according to the design, sprocket 5 has 2Z teeth and sprocket 35 has 4Z teeth.

[0039] According to the chain drive principle, driven by the linear speed V of the moving chain 20 (i.e., the speed of the moving side shear), sprocket 5 gains rotational speed. Simultaneously, the rolling of sprocket 13 or sprocket 315 on the fixed chain exerts a reverse motion tendency on the trolley. Through motion synthesis, the actual moving speeds of the inlet support trolley 22 and the outlet support trolley 27 equipped with sprocket 213 are V2 = V * (Z / (2Z + Z)) = V / 3, and the actual moving speeds of the inlet support trolley 14 and the outlet support trolley 6 equipped with sprocket 315 are V1 = V * (4Z / (2Z + 4Z)) = (2 / 3)V.

[0040] Therefore, idler bracket 2 11 and its idler 9 move at 1 / 3 the speed and displacement of the main machine; idler bracket 10 and its idler 9 move at 2 / 3 the speed and displacement of the main machine. As the moving side shear machine opens and closes, the two rows of idlers automatically and intelligently adjust the spacing between them at a 1:2 speed ratio differential, thereby providing uniform double-line support in the optimal position for various specifications of sheet and strip materials, from the narrowest to the widest, throughout the entire conveying path, ensuring the ultimate smoothness of sheet and strip material conveying and the high precision of shearing.

[0041] It is understood that the above specific description of the present invention is only for illustrating 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 modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. A double-sided shearing double-row differential moving idler device, characterized in that, The system includes a frame base with a track on it. An inlet support trolley 1 (14), an inlet support trolley 2 (12), an outlet support trolley 1 (6), and an outlet support trolley 2 (7) are mounted on the track. An idler roller support 1 (10) is fixedly connected to the inlet support trolley 1 (14) and the outlet support trolley 1 (6). An idler roller support 2 (11) is fixedly connected to the inlet support trolley 2 (12) and the outlet support trolley 2 (7). Multiple idler rollers (9) are connected to the idler roller support 1 (10) and the idler roller support 2 (11). The power input mechanism is connected to the inlet support trolley. The first support trolley (14), the second inlet support trolley (12), the first outlet support trolley (6), and the second outlet support trolley (7) are all connected to a power input mechanism for connecting with a mobile side-shearing machine with double-sided shears. A differential transmission mechanism is provided between the frame base and the first inlet support trolley (14), the second inlet support trolley (12), the first outlet support trolley (6), and the second outlet support trolley (7). The differential transmission mechanism is used to convert the unidirectional motion of the mobile side-shearing machine into a motion that drives the first roller support (10) and the second roller support (11) to move at a differential speed along the track.

2. The double-sided shearing double-row differential moving idler device according to claim 1, characterized in that, The frame base includes an inlet base (1) and an outlet base (2) arranged in a mirror arrangement, and a crossbeam (18) connecting the inlet base (1) and the outlet base (2). The track is set on the inlet base (1), the outlet base (2) and the crossbeam (18). The power input mechanism includes a movable chain seat (4) connected to the movable side shear machine through a fixed connecting block (3), and a movable chain (20) set in the movable chain seat (4).

3. The double-sided shearing double-row differential moving idler device according to claim 2, characterized in that, The differential transmission mechanism includes a fixed chain one (16) and a fixed chain two (17) fixedly installed on the frame base. The inlet support trolley one (14), the inlet support trolley two (12), the outlet support trolley one (6) and the outlet support trolley two (7) are each provided with a sprocket one (5) that meshes with the moving chain (20). The inlet support trolley two (12) and the outlet support trolley two (7) are also provided with a sprocket two (13) that meshes with the fixed chain one (16). The inlet support trolley one (14) and the outlet support trolley one (6) are also provided with a sprocket three (15) that meshes with the fixed chain two (17).

4. The double-sided shearing double-row differential moving idler device according to claim 3, characterized in that, The sprocket two (13) on the inlet support trolley two (12) and the outlet support trolley two (7) are coaxially arranged with the sprocket one (5), and the sprocket three (15) on the inlet support trolley one (14) and the outlet support trolley one (6) are coaxially arranged with the sprocket one (5).

5. A double-sided shearing double-row differential moving idler device according to claim 4, characterized in that, Each of the bracket trolleys also includes a set of traveling wheels, which includes a bracket trolley wheel one (22) and a bracket trolley wheel two (23). The sprocket one (5), the sprocket two (13) or the sprocket three (15) is mounted on the axle of the bracket trolley wheel two (23).

6. A double-sided shearing double-row differential moving idler device according to claim 5, characterized in that, The second wheel (23) of the bracket trolley is mounted on the bracket trolley via the bracket trolley bearing (21).

7. A double-sided shearing double-row differential moving idler device according to claim 3, characterized in that, The sprockets 1 (5), sprocket 2 (13) and sprocket 3 (15) have the same pitch and the number of teeth are multiples of each other.

8. A double-sided shearing double-row differential moving idler device according to claim 7, characterized in that, The number of teeth of sprocket one (5) is twice the number of teeth of sprocket two (13), the number of teeth of sprocket three (15) is twice the number of teeth of sprocket one (5), the moving speed and displacement of idler bracket two (11) and the idler (9) thereon are one-third of the moving speed and displacement of the moving side shear, and the moving speed and displacement of idler bracket one (10) and the idler (9) thereon are two-thirds of the moving speed and displacement of the moving side shear.

9. A double-sided shearing double-row differential moving idler device according to claim 3 or 5, characterized in that, It also includes multiple pressure rollers (24), which are mounted on each of the bracket trolleys and are used to guide and limit the moving chain seat (4) and the moving chain (20).

10. A double-sided shearing double-row differential moving idler device according to claim 2, characterized in that, It also includes a support (8) for supporting the suspended end of the movable chain seat (4), and a protective cover and bracket (19) installed on the frame base.

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