A steel strip production accident shear water-blocking structure

Abstract

This invention discloses a water-blocking structure for steel strip production accident shearing, including a support frame, a height adjustment device, and a water-blocking device. The height adjustment device includes a sleeve rod, a movable pusher, a sleeve, multiple push plates, and a flexible connecting cable. The sleeve rod is supported on the support frame, and the sleeve is axially fitted onto the sleeve rod. One end of the movable pusher is inserted into the sleeve rod, forming a conical working surface. Each push plate is radially inserted into the sleeve rod from the outside of the sleeve and contacts the working surface. The flexible connecting cable passes through the water-blocking device and is wound around each push plate. When the movable pusher moves axially, the working surface pushes the push plates to move radially and lifts the flexible connecting cable to adjust the height of the water-blocking device. The water-blocking structure for steel strip production accident shearing disclosed in this invention allows for height adjustment according to needs, offering high structural flexibility, improving the fit between the water-blocking device and the steel billet, and resulting in better water-blocking performance.

Description

Technical Field

[0001] This invention relates to the field of steel production technology, and in particular to a water-blocking structure for accidental shearing in steel strip production. Background Technology

[0002] Hot-rolled steel plates are manufactured through a hot rolling process, which mainly includes pretreatment, rough rolling, intermediate rolling, finish rolling, cooling, and coiling. In the rough rolling process, the steel plate output from the heating furnace passes through an emergency shear before entering the descaling machine and rolling mill. The descaling machine uses high-pressure water descaling, resulting in a large water flow. If the water-blocking roller is not closed or there is an abnormality in the water blocking mechanism, a large amount of water will flow back from the surface of the steel billet into the heating furnace. The water-blocking structure is used to prevent the descaling water from the descaling machine from entering the heating furnace through the emergency shear.

[0003] In related technologies, the integral baffle is suspended by a chain between the emergency shear inlet and the heating furnace outlet. When the distance between the baffle and the billet surface is too large, descaling water will flow back into the heating furnace on the billet surface, causing abnormal temperature drop in the heating furnace and the billet after being affected by external factors, thus affecting the rolling effect of the steel plate. When the distance between the baffle and the billet surface is too small, the baffle will generate hard friction with the billet when the billet deforms, affecting the conveying progress.

[0004] Therefore, it is necessary to propose a steel strip production accident shearing and water-blocking structure to solve the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide a water-blocking structure for steel strip production accidents, which aims to solve the problems of poor water-blocking effect when the distance between the existing water-blocking plate and the steel billet is large, causing backflow of descaling water-based steel billet surface into the heating furnace, and water-blocking plate scratching the steel billet surface when the distance between the water-blocking plate and the steel billet is too small, thus affecting product quality.

[0006] To achieve the above objectives, the present invention provides a water-blocking structure for an emergency shear in steel strip production, disposed between the emergency shear and the outlet of the heating furnace. It includes a support frame, a height adjustment device, and a water-blocking device. One end of the support frame is suspended from the emergency shear, and the water-blocking device seals the inlet of the emergency shear. The height adjustment device includes a sleeve rod, a movable pusher, a sleeve, multiple push plates, and a flexible connecting cable. The sleeve rod is supported on the support frame, and the sleeve is axially fitted onto the sleeve rod. One end of the movable pusher is inserted into the sleeve rod, and the other end is located outside the sleeve rod. The end of the movable pusher inserted into the sleeve rod forms a conical working surface. Each push plate is radially inserted into the sleeve rod from outside the sleeve and contacts the working surface. The flexible connecting cable passes through the water-blocking device and is wound around each push plate. When the movable pusher moves axially, the working surface pushes the push plates to move radially and lifts the flexible connecting cable to adjust the height of the water-blocking device.

[0007] Preferably, the movable pusher includes a handle and a push rod. The handle is mounted on the push rod, and a plurality of spaced working surfaces are formed on the push rod. A sleeve is correspondingly provided on the outside of each working surface. The push plate is radially inserted into the sleeve from each sleeve and contacts each working surface.

[0008] Preferably, the working surfaces are three that are spaced apart.

[0009] Preferably, there are three push plates, which are evenly distributed along the radial direction of the sleeve, and one of the push plates is arranged along the height direction of the emergency shear.

[0010] Preferably, each push plate has an assembly groove at the end away from the sleeve rod, and the flexible connecting cable is confined within the assembly groove.

[0011] Preferably, the water-blocking device includes a mounting plate, a front baffle, and a rear baffle. The mounting plate has a front mounting groove for mounting the front baffle and a rear mounting groove for mounting the rear baffle along the height direction of the emergency shear. The front baffle is mounted on the mounting plate and can float up and down along the front mounting groove, and the rear baffle is mounted on the rear mounting groove and can float up and down along the rear mounting groove.

[0012] Preferably, the front baffle and the rear baffle are provided with a plurality of limiting holes along the accident shear height direction, and the positioning member can pass through different limiting holes to install the front baffle and the rear baffle on the mounting plate.

[0013] Preferably, the limiting hole is a waist-shaped hole.

[0014] Preferably, the front baffle group includes two front baffles arranged side by side and closely adjacent to each other, and the rear baffle group includes three rear baffles arranged side by side and closely adjacent to each other, wherein the projection of each front baffle on the rear baffle is located on two adjacent rear baffles.

[0015] Preferably, the support frame is a rack, and a drive gear and a moving handle are axially mounted on the sleeve rod. A driven gear and a connecting rod are provided above the sleeve rod, and the drive gear meshes with the driven gear and the rack respectively.

[0016] Compared with the prior art, the water-blocking structure for steel strip production accidents provided by the present invention has the following beneficial effects:

[0017] The water-blocking structure for steel strip production accidents provided by this invention features a movable pusher within the sleeve rod. The pusher plate radially passes through the sleeve and the sleeve rod, contacting a conical working surface installed within the sleeve rod. When the movable pusher is pushed, the conical working surface contacts the pusher plate, causing it to move radially. This opens the flexible connecting cable wound around the pusher plate, allowing the flexible connecting cable to be lifted. This adjusts the height of the water-blocking device hanging on the flexible connecting cable to meet water-blocking requirements. The water-blocking device can be adjusted as needed, offering greater flexibility and effectively improving the fit between the water-blocking device and the steel billet, resulting in better water-blocking performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A perspective view of the steel strip production accident shear water-blocking structure provided by the present invention;

[0020] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the shear and water-blocking structure in a steel strip production accident.

[0021] Figure 3 for Figure 1 The diagram shows a partial structural diagram of the shearing and water-blocking structure used in a steel strip production accident.

[0022] Figure 4 for Figure 1 An enlarged view of the structure of part A shown below;

[0023] Figure 5 for Figure 1 The diagram shown is an exploded view of the water-blocking device.

[0024] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, the terms "before" and "after" used in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "before" or "after" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0029] Please refer to the following: Figures 1 to 4This invention provides a water-blocking structure for an emergency shear in steel strip production. This structure is installed between the inlet of the emergency shear 10 and the outlet of the heating furnace to prevent cooling water sprayed from the descaling machine from entering the heating furnace. The structure includes a support frame 1, a height adjustment device 3, and a water-blocking device 5. The support frame 1 is cantilevered at one end and suspended from the emergency shear 10, while the water-blocking device 5 seals the inlet of the emergency shear 10. The height adjustment device 3 includes a sleeve rod 31, a movable pusher 33, a sleeve 35, multiple push plates 37, and a flexible connecting cable 39. The sleeve rod 31 is supported on the support frame 1. The sleeve 35 is axially sleeved on the sleeve rod 31. One end of the movable pusher 33 is inserted into the sleeve rod 31, and the other end is located outside the sleeve rod 31. The end of the movable pusher 33 inserted into the sleeve rod 31 forms a conical working surface 331. Each push plate 37 is radially inserted into the sleeve rod 31 from the outside of the sleeve 35 and contacts the working surface 331. The flexible connecting cable 39 passes through the water-blocking device 5 and is wound around each push plate 37. When the movable pusher 33 moves axially, the working surface 331 pushes the push plate 37 to move radially and lifts the flexible connecting cable 39 to adjust the height of the water-blocking device 5. The movable pusher 33 located outside the sleeve rod 31 can move under the action of external force. When the movable pusher 33 moves axially, the working surface 331 and the push plate 37 are squeezed together, and the diameter of the working surface 331 gradually increases. The push plate 37 is pushed radially to extend and increase the length of the extension. Thus, when the circumference of the flexible connecting cable 39 is constant, and the length of each push plate 37 changes, each push plate 37 will open the flexible connecting cable 39. The straight distance between the flexible connecting cable 39 and the water-blocking device 5 is shortened, so that the water-blocking device 5 is lifted as a whole, thereby adjusting the height of the water-blocking device 5. This adjusts the interval distance between the water-blocking device 5 and the steel billet 30. Therefore, by providing a movable pusher 33 within the sleeve rod 31, and by having the pusher plate 37 radially pass through the sleeve 35 and the sleeve rod 31 to contact the conical working surface 331 installed within the sleeve rod 31, when the movable pusher 33 is pushed, the conical working surface 331 contacts the pusher plate 37 to push it radially, thereby opening the flexible connecting cable 39 wrapped around the pusher plate 37. This allows the flexible connecting cable 39 to be lifted, achieving the purpose of adjusting the height of the water-blocking device 5 hanging on the flexible connecting cable 39 to meet the water-blocking requirements. The height-adjustable water-blocking device 5 offers high flexibility and effectively improves the fit between the water-blocking device 5 and the billet 30. This solves the problem in the prior art where, due to the non-adjustable water-blocking plate, the gap between the water-blocking plate and the billet 30 is too large or too small, resulting in poor water-blocking effect or friction.Understandably, the various water-blocking devices 5 can be adjusted according to various working conditions that occur during the production of the billet 30. For example, when the thickness of the billet 30 changes or the height of the conveying rollers changes, causing the distance between the water-blocking device 5 and the billet 30 to change, and the water-blocking requirements cannot be met, the problem can be solved by adjusting the water-blocking device 5.

[0030] like Figure 2 and Figure 3 As shown, the movable pusher 33 includes a handle 333 and a push rod 335. The handle 333 is mounted on the push rod 335 for operating the push rod 335 to move. Multiple spaced working surfaces 331 are formed on the push rod 335. A sleeve 331 is correspondingly disposed outside each working surface 331. The push plate 37 is radially inserted into the sleeve 31 from each sleeve 35 and contacts each working surface 331. Figure 2 As shown, rotating the handle 333 moves the push rod 335 to the left, and the working surface 331 presses against the push plate 37, causing the push plate 37 to move radially. When the movable pusher 33 moves axially, the working surface 331 and the push plate 37 are pressed together, and the diameter of the working surface 331 gradually increases, radially pushing the push plate 37 to extend and increase the outward length, thereby lifting the flexible connecting cable 39.

[0031] Specifically, in this embodiment, the working surfaces 331 are three spaced apart, the number of sleeves 35 is the same as the number of push rods 335, and each push plate 37 is radially inserted into the sleeve rod 31 from each sleeve 35.

[0032] Furthermore, there are three push plates 37, evenly distributed radially along the sleeve 35, with one push plate 37 positioned along the height direction of the emergency shear 10. Understandably, with the even distribution, one push plate 37 is positioned at the top of the sleeve 35 along the direction of gravity, while the other two open to the sides, forming an expanded suspension configuration. This allows the water-blocking device 5 to be pulled up when the flexible connecting cable 39 is lifted. Specifically, three push plates 37 are installed on one sleeve 35, inserted radially into and confined on the sleeve 35. It should be explained that the push plate 37 has a radially formed waist-shaped groove, through which a screw passes, allowing the push plate 37 a certain range of motion.

[0033] Furthermore, the end of each push plate 37 that contacts the top rod is provided as an inclined surface, and the end of each push plate 37 away from the sleeve rod 31 is provided with an assembly groove. The flexible connecting cable 39 is installed in the assembly groove to fix the flexible connecting cable 39. Specifically, the flexible connecting cable 39 is a chain.

[0034] Please see Figure 5 Specifically, in one embodiment, the water-blocking device 5 includes a mounting plate 51, a front baffle 53, and a rear baffle 55. The mounting plate 51 is suspended on the flexible connecting cable 39, and the mounting plate 51 has a front mounting groove 58 for mounting the front baffle 53 and a rear mounting groove 59 for mounting the rear baffle 55 along the height direction of the emergency shear 10. The front baffle 53 is movably connected to the mounting plate 51 and can float up and down along the front mounting groove 58, and the rear baffle 55 is movably connected to the rear mounting groove 59 and can float up and down along the rear mounting groove 59. Therefore, by setting the front baffle 53 and the rear baffle 55 to float up and down in the height direction of the emergency shear 10, it can adapt to the deformation of the upper surface of the steel billet, achieving a double blocking effect from both front and rear directions, while also being able to make real-time adjustments according to changes in the surface of the steel billet. Understandably, when the movable push rod is moved to its limit position, that is, when the water-blocking device is adjusted to its highest height, the front and rear baffles of the water-blocking device can be adjusted to adapt to the deformation of the steel billet surface under different working conditions, which can effectively block the water flow on the steel billet and prevent the water flow from entering the heating furnace.

[0035] Furthermore, the front baffle 53 and the rear baffle 55 are provided with a plurality of limiting holes 57 along the height direction of the emergency shear 10. The positioning member passes through different limiting holes 57 to install the front baffle 53 and the rear baffle 55 on the mounting plate 51. The front baffle 53 and the rear baffle 55 rest on the steel billet 30 and can float up and down along the limiting holes 57. The limiting hole 57 restricts the vertical floating range of the baffle. The limiting hole 57 controls the baffle to float slightly up and down to fit the surface of the billet. When the billet 30 passes through the water blocking device 5, the front baffle 53 and the rear baffle 55 are lifted by the billet 30, which will not scratch the surface of the billet, but will always be in contact with the billet 30. In this way, the water flow on the billet 30 will also be blocked by the front baffle 53 and the rear baffle 55 into the emergency shear 10, and will not flow out with the billet 30, effectively reducing the water flow carried into the heating furnace by the movement of the billet 30.

[0036] The front baffle 53 includes two front baffles 531 arranged side by side and closely adjacent to each other, and the rear baffle 55 includes three rear baffles 551 arranged side by side and closely adjacent to each other, and the projections of the two front baffles 531 on the rear baffles 551 are located on the two adjacent rear baffles 551. The limiting holes 57 are formed on the front baffle 531 and the rear baffle. Each front and rear baffle is installed on the mounting plate 51 by bolts passing through the limiting holes 57. The front baffle 53 and the rear baffle 55 are divided into multiple small baffles. Each small baffle can float up and down to adapt to the deformation of the billet 30 at different positions. For example, if the left side of the billet is high and the right side is low, the left baffle will float up a little and the right baffle will sink a little. The more baffles there are, the better they can adapt to the transverse cross-sectional shape of the billet, and the better the water blocking effect. The height of the front and rear baffles is adjustable in multiple levels, which can automatically compensate for wear and control the wear size. The front baffle 531 and the rear baffle 551 partially overlap to make up for the gap between the baffles, thereby improving the water blocking effect.

[0037] Furthermore, the limiting hole 57 is an oblong hole. Each of the front baffle 531 and the rear baffle 551 is provided with multiple limiting holes 57. The oblong holes at different positions on the front and rear baffles can be adjusted according to height requirements. The length direction of the front and rear baffles is consistent with the height direction of the emergency shear 10. Thus, the front baffle 53 and the rear baffle 55 can float up and down along the limiting holes 57, allowing the limiting holes 57 to provide a certain range of freedom in height, thereby achieving height adjustment of the front baffle 53 and the rear baffle 55. It is understood that the front baffle 53 and the rear baffle 55 can adaptively and moderately tilt. The cooperation of the front and rear baffles with different limiting holes will result in a smaller tilting angle, and a smaller tilting angle is better. A smaller angle leads to faster break-in and better results.

[0038] Of course, in another embodiment, under some simple working conditions, the water-blocking device 5 can also be a single plate, which is simpler to manufacture.

[0039] like Figure 1As shown, the support frame 1 is a rack and pinion. The sleeve rod 31 passes through a plate fixed to the side of the support frame and is mounted on the support frame 1. An axial drive gear 7 and a moving handle 8 are also mounted on the sleeve rod 31. One end of the inner mounting ring of the moving handle 8 is sleeved with the sleeve rod 31, and the other end is threadedly connected to the top rod 335. A driven gear 9 and a connecting rod 11 are arranged above the sleeve rod 31. The drive gear 7 meshes with the driven gear 9 and the rack, respectively. Rotating the moving handle 8 causes the entire sleeve rod 31 to move along the rack under the drive of the drive gear 7. The two driven gears 9 and the connecting rod 11 can drive the gear mounted on the other end of the sleeve rod 31 to move, thereby adjusting the distance between the sleeve rod 31 and the emergency shear 10 to meet the working space required for component installation and disassembly, and also to facilitate the hoisting in and out of the test plate after the emergency shear.

[0040] The water-blocking structure for steel strip production accidents provided by the present invention features a movable pusher 33 within the sleeve rod 31, and a pusher plate 37 radially passing through the sleeve 35 and the sleeve rod 31 to contact the conical working surface 331 installed within the sleeve rod 31. When the movable pusher 33 is pushed, the conical working surface 331 contacts the pusher plate 37, causing it to move radially. This opens the flexible connecting cable 39 wound around the pusher plate 37, allowing the flexible connecting cable 39 to be lifted to adjust the height of the water-blocking device 5 hanging on it, thus meeting water-blocking requirements. The water-blocking device 5 can be adjusted as needed, offering greater flexibility and effectively improving the fit between the water-blocking device 5 and the steel billet 30, resulting in better water-blocking performance.

[0041] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A water-blocking structure for an emergency shear in steel strip production, disposed between the emergency shear and the outlet of the heating furnace, characterized in that, The device includes a support frame, a height adjustment device, and a water-blocking device. One end of the support frame is suspended from the emergency shear. The water-blocking device seals the entrance of the emergency shear. The height adjustment device includes a sleeve rod, a movable pusher, a sleeve, multiple push plates, and a flexible connecting cable. The sleeve rod is supported on the support frame. The sleeve is axially fitted onto the sleeve rod. One end of the movable pusher is inserted into the sleeve rod, and the other end is located outside the sleeve rod. The end of the movable pusher inserted into the sleeve rod forms a conical working surface. Each push plate is radially inserted into the sleeve rod from outside the sleeve and contacts the working surface. The flexible connecting cable passes through the water-blocking device and is wound around each push plate. When the movable pusher moves axially, the working surface pushes the push plate to move radially and lifts the flexible connecting cable to adjust the height of the water-blocking device.

2. The water-blocking structure for steel strip production accident shearing according to claim 1, characterized in that, The movable pusher includes a handle and a push rod. The handle is mounted on the push rod, and multiple spaced working surfaces are formed on the push rod. A sleeve is correspondingly provided on the outside of each working surface. The push plate is radially inserted into the sleeve from each sleeve and contacts each working surface.

3. The water-blocking structure for steel strip production accident shearing according to claim 2, characterized in that, The working surfaces are three that are spaced apart.

4. The water-blocking structure for steel strip production accident shearing according to claim 1, characterized in that, There are three push plates, which are evenly distributed along the radial direction of the sleeve, and one of the push plates is set along the height direction of the emergency shear.

5. The water-blocking structure for steel strip production accident shearing according to claim 1, characterized in that, Each push plate has an assembly groove at the end away from the sleeve rod, and the flexible connecting cable is confined within the assembly groove.

6. The water-blocking structure for steel strip production accident shearing according to claim 1, characterized in that, The water-blocking device includes a mounting plate, a front baffle, and a rear baffle. The mounting plate has a front mounting groove for installing the front baffle and a rear mounting groove for installing the rear baffle along the height direction of the emergency shear. The front baffle is mounted on the mounting plate and can float up and down along the front mounting groove. The rear baffle is mounted on the rear mounting groove and can float up and down along the rear mounting groove.

7. The water-blocking structure for steel strip production accident shearing according to claim 6, characterized in that, The front baffle and the rear baffle are provided with multiple limiting holes along the accident shear height direction. The positioning member can pass through different limiting holes to install the front baffle and the rear baffle on the mounting plate.

8. The water-blocking structure for steel strip production accident shearing according to claim 7, characterized in that, The limiting hole is a waist-shaped hole.

9. The water-blocking structure for steel strip production accident shearing according to claim 7, characterized in that, The front baffle group includes two front baffles arranged side by side and closely adjacent to each other, and the rear baffle group includes three rear baffles arranged side by side and closely adjacent to each other, wherein the projection of each front baffle on the rear baffle is located on the adjacent two rear baffles.

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