Telescopic guide plate for rolling mill

Abstract

The utility model relates to the technical field of rolling mills, in particular to a telescopic guide plate for a rolling mill, which comprises a fixed guide plate, a connecting guide plate and a movable structure, the two side faces of the movable guide plate are fixedly connected with the connecting guide plate and the lower portions of the movable supports respectively, a plurality of avoiding open grooves with the same number as the movable supports are formed in the side end of the fixed guide plate, and the upper portion of each movable support penetrates through the corresponding avoiding open groove and extends out to the top of the fixed guide plate. The telescopic guide plate for the rolling mill can stretch out and draw back, a material head of a strip at a gap can be automatically jacked up, and the strip is not damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling mills, and particularly relates to a telescopic guide plate for a rolling mill. Background Art

[0002] A thickness gauge is used to measure the thickness of a strip, and generally, a thickness gauge is arranged between a rolling mill and a flying shear. When the thickness gauge is measuring, it is necessary to ensure that there is no obstruction between the ray emission source and the reflector of the thickness gauge. Therefore, a gap (the size of the gap can generally be set to 92 mm) should be left between the outlet guide plate of the rolling mill and the swing guide plate of the flying shear. During the threading process, when the strip passes through this gap, due to gravity, the leading end of the strip will fall downward, which will cause the leading end of the strip to hit the swing guide plate of the flying shear. At this time, someone needs to use an iron rod to lift the leading end of the strip to ensure that the strip can pass smoothly.

[0003] Since the outlet guide plate of the rolling mill is a fixed guide plate and cannot be telescopically moved, the gap between the outlet guide plate of the rolling mill and the swing guide plate of the flying shear cannot be eliminated. Only by manually lifting the leading end of the strip can it smoothly transition from the outlet guide plate of the rolling mill to the swing guide plate of the flying shear. This way of manually lifting the leading end of the strip by people wastes manpower, affects the working efficiency of the rolling mill and the flying shear, and even reduces the surface quality of the leading end of the strip. Therefore, there is an urgent need for a telescopic guide plate for a rolling mill to solve the above problems. Summary of the Utility Model

[0004] In order to solve the technical problem that the gap between the outlet guide plate of the rolling mill and the swing guide plate of the flying shear cannot be eliminated and only the leading end of the strip can be manually lifted, the utility model provides a telescopic guide plate for a rolling mill, which replaces the traditional outlet guide plate on the rolling mill, can be telescoped, realizes automatically lifting the leading end of the strip at the gap, and does not damage the strip.

[0005] The utility model provides a telescopic guide plate for a rolling mill, which comprises a fixed guide plate, a connecting guide plate and a movable structure. The connecting guide plate is slidably arranged at the bottom of the fixed guide plate. The movable structure comprises a movable guide plate and a plurality of movable brackets. The two side surfaces of the movable guide plate are respectively fixedly connected with the connecting guide plate and the lower parts of the plurality of movable brackets. A plurality of avoidance slots equal in number to the movable brackets are arranged at the side end of the fixed guide plate. The upper part of each movable bracket passes through the avoidance slot and extends to the top of the fixed guide plate. The connecting guide plate slides leftward, thereby realizing the leftward sliding of the movable guide plate and the plurality of movable brackets. The upper part of the movable bracket moves out of the avoidance slot, and the upper part of the movable bracket is basically in contact with the swing guide plate of the flying shear. The upper part of the movable bracket supports the leading end of the strip passing through this gap to ensure that the leading end of the strip passes through.

[0006] Further, each of the movable brackets includes a first horizontal plate portion, an inclined plate portion, and a second horizontal plate portion. The two ends of the inclined plate portion are respectively fixedly connected to the first horizontal plate portion and the second horizontal plate portion, and the first horizontal plate portion and the second horizontal plate portion are parallel to each other. The two side surfaces of the movable guide plate are respectively fixedly connected to the connecting guide plate and a plurality of first horizontal plate portions, and a plurality of the second horizontal plate portions all pass through the avoidance slots and extend to the top of the fixed guide plate. The second horizontal plate portion jacks up the head of the strip, so that the head of the strip does not fall into the gap.

[0007] Further, the movable structure further includes a reinforcing plate, which is fixedly connected to a plurality of second horizontal plate portions, and the reinforcing plate is located below a plurality of avoidance slots. The reinforcing plate serves to enhance the structural strength of a plurality of movable brackets.

[0008] Further, a double-rod hydraulic cylinder located on the side of a plurality of avoidance slots is provided at the bottom of the fixed guide plate. A notch is provided on the connecting guide plate. The double-rod hydraulic cylinder is located within the notch, and the telescopic rod of the double-rod hydraulic cylinder is fixedly connected to the inner side wall of the notch.

[0009] Further, the telescopic guide plate further includes two sliding pressing plates, which are oppositely arranged at the bottom of the fixed guide plate. The double-rod hydraulic cylinder and the connecting guide plate are both located between the two sliding pressing plates. Sliders are provided at both ends of the connecting guide plate, and chutes are provided on each of the sliding pressing plates. Each slider is snapped into the chute and can slide in the chute. The sliding pressing plates are provided to make the sliding of the connecting guide plate more stable.

[0010] Further, a guiding circular key located on the side of the double-rod hydraulic cylinder is provided at the bottom of the fixed guide plate. A guiding slot is provided at the position of the connecting guide plate corresponding to the guiding circular key. The guiding circular key is located within the guiding slot and can slide. The purpose of providing the guiding circular key is to assist the sliding of the connecting guide plate.

[0011] Further, the size of the notch is larger than the size of the double-rod hydraulic cylinder, and there is a gap between one end face of the inner side wall of the notch and the double-rod hydraulic cylinder. A wear-resistant side plate is provided at the gap. The wear-resistant side plate is provided at this gap to prevent direct contact between the double-rod hydraulic cylinder and the connecting guide plate.

[0012] Further, the telescopic guide plate further includes a plurality of wear-resistant liners, which are evenly arranged on the top of the fixed guide plate, and a plurality of the avoidance slots and the wear-resistant liners are arranged at intervals in turn. The wear-resistant side plates are provided to enhance the durability of the fixed guide plate.

[0013] Further, a first groove is provided on the movable guide plate, a second groove is provided at the position of the connecting guide plate corresponding to the first groove, and a key is provided between the first groove and the second groove.

[0014] Furthermore, two mounting plates are oppositely arranged at the bottom of the fixed guide plate, and a reinforcing cross beam is fixedly connected between the two mounting plates. The reinforcing cross beam is located below the plurality of movable brackets. The main function of the reinforcing cross beam is to strengthen the strength of the fixed guide plate.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] During the threading process, the rolling mill transports the strip. After the strip passes over the top of the fixed guide plate, it will reach the gap between the swing guide plate and the fixed guide plate of the shear head. At this time, the double-acting piston rod hydraulic cylinder is started, driving the connecting guide plate to slide to the left. Further, the movable guide plate and the plurality of movable brackets slide to the left. The upper part of the movable bracket moves out of the avoidance slot, and the upper part of the movable bracket is located at this gap and is substantially in contact with the swing guide plate of the shear head. The upper part of the movable bracket supports the head of the strip passing through this gap, ensuring the passage of the head of the strip, realizing the automatic jacking of the head of the strip at the gap, and not damaging the strip. Description of the Drawings

[0017] Figure 1 is an exploded structural schematic diagram of a telescopic guide plate for a rolling mill of the utility model;

[0018] Figure 2 is a top view structural schematic diagram of the telescopic guide plate of the utility model;

[0019] Figure 3 is a bottom view structural schematic diagram of the telescopic guide plate of the utility model;

[0020] Figure 4 is a structural schematic diagram of the fixed connection between the movable guide plate and the connecting guide plate of the utility model;

[0021] Figure 5 is a structural schematic diagram of the movable guide plate of the utility model;

[0022] Figure 6 is a structural schematic diagram of the telescopic guide plate installed on the rolling mill frame of the utility model;

[0023] The reference numerals in the drawings are:

[0024] 1. Fixed guide plate; 11. Avoidance slot; 12. Guide round key; 13. Mounting plate;

[0025] 2. Connecting guide plate; 21. Notch; 22. Guide slot;

[0026] 3. Double-acting piston rod hydraulic cylinder;

[0027] 4. Movable structure; 41. Movable guide plate; 42. Movable bracket; 43. Reinforcing plate;

[0028] 5. Sliding pressure plate; 51. Chute; 6. Wear-resistant side plate; 7. Wear-resistant lining plate; 8. Key; 9. Reinforcing cross beam. Detailed implementation manner

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and the detailed implementation manner.

[0030] As Figures 1 to 6 shown, a telescopic guide plate for a rolling mill includes a fixed guide plate 1, a connecting guide plate 2 and a movable structure 4. The top of the fixed guide plate 1 is for the strip to pass through. The connecting guide plate 2 is slidably arranged at the bottom of the fixed guide plate 1. The movable structure 4 includes a movable guide plate 41 and a plurality of movable brackets 42. The two side surfaces of the movable guide plate 41 are respectively fixedly connected to the lower parts of the connecting guide plate 2 and the plurality of movable brackets 42. A plurality of avoidance slots 11 equal in number to the movable brackets 42 are arranged on the side end of the fixed guide plate 1. The upper part of each movable bracket 42 passes through the avoidance slot 11 and extends to the top of the fixed guide plate 1. Specifically, a double-acting piston cylinder 3 is arranged at the bottom of the fixed guide plate 1 on the side of the plurality of avoidance slots 11. A notch 21 is arranged on the connecting guide plate 2. The double-acting piston cylinder 3 is located in the notch 21 and the telescopic rod of the double-acting piston cylinder 3 is fixedly connected to the inner side wall of the notch 21. Among them, two notches 21 and double-acting piston cylinders 3 are provided in this embodiment so that the connecting guide plate 2, the movable guide plate 41 and the plurality of movable brackets 42 are more stable when sliding. The double-acting piston cylinder 3 is adopted in this embodiment because the above-mentioned gap is small and the stroke does not need to be too large.

[0031] When the double-acting piston cylinder 3 is started, it drives the connecting guide plate 2 to slide to the right, and further realizes the rightward sliding of the movable guide plate 41 and the plurality of movable brackets 42. The upper part of the movable bracket 42 is located in the avoidance slot 11 (the movable bracket 42 is in a retracted state). At this time, the radiation source of the thickness gauge can pass through the gap between the swing guide plate of the shear and the fixed guide plate 1.

[0032] When the double-acting piston cylinder 3 is started, it drives the connecting guide plate 2 to slide to the left, and further realizes the leftward sliding of the movable guide plate 41 and the plurality of movable brackets 42. The upper part of the movable bracket 42 moves out of the avoidance slot 11 (the movable bracket 42 is in an extended state), and the upper part of the movable bracket 42 is located at the above gap and is basically in contact with the swing guide plate of the shear. The radiation source of the thickness gauge cannot pass through this gap.

[0033] The telescopic guide plate of this embodiment can be installed on the frame of the rolling mill through the fixed guide plate 1. Specifically, the telescopic guide plate can be installed on one side of the rolling mill frame close to the swing guide plate of the shear. See Figure 6, the left side of the telescopic guide plate is the head shear, the right side is the frame of the rolling mill, and the front side is the thickness gauge. During strip threading, the rolling mill transports the strip. After the strip passes over the top of the fixed guide plate 1, it reaches this gap. At this time, the double-rod hydraulic cylinder 3 is activated, driving the connecting guide plate 2 to slide to the left. As a result, the movable guide plate 41 and multiple movable brackets 42 slide to the left. The upper part of the movable bracket 42 moves out of the avoidance slot 11, and the upper part of the movable bracket 42 is located at this gap and is basically in contact with the swing guide plate of the head shear. The upper part of the movable bracket 42 supports the leading end of the strip passing through this gap (i.e., jacks it up to prevent the leading end of the strip from falling into the gap), ensuring that the leading end of the strip passes through. Then, the leading end of the strip can smoothly enter the swing guide plate of the head shear, and then the next operation is carried out. When the threading is completed and the mill is operating normally, the double-rod hydraulic cylinder 3 drives the movable bracket 42 back to the retracted state.

[0034] The telescopic guide plate of this embodiment replaces the traditional outlet guide plate on the rolling mill. It can be telescoped to automatically jack up the leading end of the strip at the gap without damaging the strip, thereby improving the working efficiency of the rolling mill and the head shear. The overall structure is designed compactly and does not occupy too much space.

[0035] As an implementable way, refer to Figure 4 and 5 , both ends of the inclined plate part are fixedly connected to the first cross plate part and the second cross plate part respectively, and the first cross plate part and the second cross plate part are parallel; both side surfaces of the movable guide plate 41 are fixedly connected to the connecting guide plate 2 and multiple first cross plate parts respectively, and multiple second cross plate parts all pass through the avoidance slot 11 and extend to the top of the fixed guide plate 1. Among them, the movable bracket 42 is integrally formed. Both ends of the above-mentioned movable guide plate 41 are fixedly connected to the lower parts of the connecting guide plate 2 and multiple movable brackets 42 respectively, that is, the upper end of the above-mentioned movable guide plate 41 is fixedly connected to the bottom of the connecting guide plate 2, and the lower end of the movable guide plate 41 is fixedly connected to multiple first cross plate parts.

[0036] Specifically, the leading end of the strip is jacked up by the second cross plate part to prevent the leading end of the strip from falling into the gap.

[0037] As an implementable way, the movable structure 4 further includes a reinforcing plate 43. The reinforcing plate 43 is fixedly connected to multiple second cross plate parts, and the reinforcing plate 43 is located below multiple avoidance slots 11. The reinforcing plate 43 plays a role in strengthening the structural strength of multiple movable brackets 42 and enabling multiple movable brackets 42 to slide synchronously.

[0038] As an implementable manner, the telescopic guide plate further includes two sliding pressure plates 5. The two sliding pressure plates 5 are oppositely arranged at the bottom of the fixed guide plate 1. The double-acting piston rod hydraulic cylinder 3 and the connecting guide plate 2 are both located between the two sliding pressure plates 5. Sliders are arranged at both ends of the connecting guide plate ......

[0039] As an implementable manner, a guiding circular key 12 is further arranged at the bottom of the fixed guide plate 1 on the side of the double-acting piston rod hydraulic cylinder 3. A guiding slot 22 is arranged at the position of the connecting guide plate 2 corresponding to the guiding circular key 12. The guiding circular key 12 is located in the guiding slot 22 and can slide. The guiding slot 22 limits the position of the guiding circular key 12. When the connecting guide plate 2 slides, the guiding circular key 12 slides in the guiding slot 22. The purpose of arranging the guiding circular key 12 is to assist the sliding of the connecting guide plate 2.

[0040] As an implementable manner, the size of the notch 21 is larger than that of the double-acting piston rod hydraulic cylinder 3. There is a gap between one end face of the inner side wall of the notch 21 and the double-acting piston rod hydraulic cylinder 3. A wear-resistant side plate 6 is arranged at the gap. See Figure 3 , the inner side wall has four end faces. Among them, the telescopic rod of the double-acting piston rod hydraulic cylinder 3 is fixedly connected to the two end faces opposite to the inner side wall. At this time, there are gaps between the double-acting piston rod hydraulic cylinder 3 and the other two opposite end faces. The gap between the double-acting piston rod hydraulic cylinder 3 and one end face is smaller, and this gap is 0.5 mm. The wear-resistant side plate 6 is arranged at this gap to prevent the double-acting piston rod hydraulic cylinder 3 from directly contacting the connecting guide plate 2. The gap between the double-acting piston rod hydraulic cylinder 3 and the remaining end face is larger, so there is no need to worry about their direct contact.

[0041] As an implementable manner, the telescopic guide plate further includes a plurality of wear-resistant liners 7. The plurality of wear-resistant liners 7 are evenly arranged on the top of the fixed guide plate 1. The plurality of avoidance slots 11 and the wear-resistant liners 7 are arranged at intervals in turn. The top of the fixed guide plate 1 is for the strip to pass through. When the strip passes through the fixed guide plate 1, in order to enhance the durability of the fixed guide plate 1, wear-resistant liners 7 are arranged on the top of the fixed guide plate 1 to meet the requirements. After the wear-resistant liners 7 are arranged on the top of the fixed guide plate 1, at this time, the height of the second cross plate part of the movable bracket 42 is slightly lower than the height of the plane where the wear-resistant liners 7 are located, so as to realize the smooth transportation of the strip.

[0042] As an implementable manner, a first screw hole is provided on the movable guide plate 41, a second screw hole is provided at a position corresponding to the first screw hole on the connecting guide plate 2, and a third screw hole is provided at a position corresponding to the first screw hole on the movable bracket 42. Specifically, the third screw hole is provided on the first horizontal plate portion. The first screw hole, the second screw hole, and the third screw hole are fixedly connected by bolts. The movable guide plate 41, the connecting guide plate 2, and the movable bracket 42 are fixedly connected together through the first screw hole, the second screw hole, the third screw hole, and the bolts.

[0043] As an implementable manner, a first groove is provided on the movable guide plate 41, a second groove is provided at a position corresponding to the first groove on the connecting guide plate 2, and a key 8 is provided between the first groove and the second groove. To prevent the connecting guide plate 2 and the movable bracket 42 from being loosely connected after the bolts are loosened, the movable guide plate 41 and the connecting guide plate 2 are further tightly connected by providing the key 8.

[0044] Furthermore, an avoidance opening is provided at a position corresponding to the notch 21 on the movable guide plate 41, so that the overall structure is more concise and compact after the connecting guide plate 2 and the movable guide plate 41 are fixedly connected.

[0045] As an implementable manner, two mounting plates 13 are oppositely provided at the bottom of the fixed guide plate 1, and a reinforcing cross beam 9 is fixedly connected between the two mounting plates 13. The reinforcing cross beam 9 is located below a plurality of movable brackets 42. The telescopic guide plate of this embodiment can be installed on the frame of the rolling mill through the fixed guide plate 1 and the two mounting plates 13. Among them, a plurality of through holes are provided on the mounting plate 13 to further facilitate the fixed connection between the mounting plate 13 and the frame of the rolling mill. The main function of the reinforcing cross beam 9 is to strengthen the strength of the fixed guide plate 1. Secondly, when the thickness gauge is arranged between the rolling mill and the head shear, the reinforcing cross beam 9 is also used to install the air purging structure of the reflector below the thickness gauge.

[0046] The above embodiments are only the preferred embodiments of the present invention, which are only used to explain the present invention and do not limit the scope of implementation of the present invention. For those skilled in the art of this technology, of course, other implementation manners can be easily made by means of replacement or change according to the technical content disclosed in this specification. Therefore, all changes and improvements made in the principles and process conditions of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. A telescopic guide plate for a rolling mill, characterized in that, It includes a fixed guide plate (1), a connecting guide plate (2) and a movable structure (4). The connecting guide plate (2) is slidably arranged at the bottom of the fixed guide plate (1). The movable structure (4) includes a movable guide plate (41) and a plurality of movable brackets (42). Both side surfaces of the movable guide plate (41) are fixedly connected to the connecting guide plate (2) and the lower parts of the plurality of movable brackets (42) respectively. A plurality of avoiding slots (11) with the same number as the movable brackets (42) are arranged on the fixed guide plate (1). The upper part of each movable bracket (42) passes through the avoiding slot (11) and extends to the top of the fixed guide plate (1).

2. The telescopic guide plate according to claim 1, wherein, Each movable bracket (42) includes a first horizontal plate part, an inclined plate part and a second horizontal plate part. The two ends of the inclined plate part are fixedly connected to the first horizontal plate part and the second horizontal plate part respectively. The first horizontal plate part and the second horizontal plate part are parallel to each other. Both side surfaces of the movable guide plate (41) are fixedly connected to the connecting guide plate (2) and the plurality of first horizontal plate parts respectively. The plurality of second horizontal plate parts all pass through the avoiding slots (11) and extend to the top of the fixed guide plate (1).

3. The telescopic guide plate according to claim 2, wherein The movable structure (4) further includes a reinforcing plate (43). The reinforcing plate (43) is fixedly connected to the plurality of second horizontal plate parts. The reinforcing plate (43) is located below the plurality of avoiding slots (11).

4. The telescopic guide plate according to claim 1, wherein A double-rod hydraulic cylinder (3) is arranged at the bottom of the fixed guide plate (1) and is located on the side of the plurality of avoiding slots (11). A notch (21) is arranged on the connecting guide plate (2). The double-rod hydraulic cylinder (3) is located in the notch (21) and the telescopic rod of the double-rod hydraulic cylinder (3) is fixedly connected to the inner side wall of the notch (21).

5. The telescopic guide plate according to claim 4, wherein, The telescopic guide plate further includes two sliding pressing plates (5). The two sliding pressing plates (5) are oppositely arranged at the bottom of the fixed guide plate (1). The double-rod hydraulic cylinder (3) and the connecting guide plate (2) are both located between the two sliding pressing plates (5). Sliders are arranged at both ends of the connecting guide plate (2). A chute (51) is arranged on each sliding pressing plate (5). Each slider is clamped into the chute (51) and can slide in the chute (51).

6. The telescopic guide plate according to claim 4, wherein A guiding circular key (12) is further arranged at the bottom of the fixed guide plate (1) and is located on the side of the double-rod hydraulic cylinder (3). A guiding slot (22) is arranged at the position corresponding to the guiding circular key (12) on the connecting guide plate (2). The guiding circular key (12) is located in the guiding slot (22) and can slide.

7. The telescopic guide plate according to claim 4, wherein The size of the notch (21) is larger than that of the double-rod hydraulic cylinder (3). There is a gap between one end face of the inner side wall of the notch (21) and the double-rod hydraulic cylinder (3). A wear-resistant side plate (6) is arranged at the gap.

8. The telescopic guide plate according to claim 1, wherein The telescopic guide plate further includes a plurality of wear-resistant liners (7). The plurality of wear-resistant liners (7) are evenly arranged on the top of the fixed guide plate (1). The plurality of avoiding slots (11) and the wear-resistant liners (7) are arranged at intervals in turn.

9. The telescopic guide plate according to claim 1, characterized in that, A first groove is provided on the movable guide plate (41), a second groove is provided at a position corresponding to the first groove on the connecting guide plate (2), and a key (8) is provided between the first groove and the second groove.

10. The telescopic guide plate according to claim 1, wherein, Two mounting plates (13) are oppositely provided at the bottom of the fixed guide plate (1), a reinforcing cross beam (9) is fixedly connected between the two mounting plates (13), and the reinforcing cross beam (9) is located below a plurality of movable brackets (42).

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