Steel billet rough rolling device

Abstract

The utility model belongs to the technical field of billet rough rolling, and discloses a billet rough rolling device which comprises a bottom plate, a feeding table, a conveying table and a plurality of rough rolling frames are fixedly mounted at the top of the bottom plate, conveying rollers are rotatably mounted at the tops of the feeding table and the conveying table, and a pair of side plates is fixedly mounted on the two sides of the top of the feeding table; a cross beam is fixedly installed above the inner side of the side plate, and the distance between the lower roller and the upper roller on the inner side of each rough rolling frame is adjusted according to the sequence decreasing from the feeding table to the conveying table. Meanwhile, it needs to be guaranteed that the distance between the upper roller and the lower roller of the last-stage rough rolling frame, namely the leftmost rough rolling frame is the final required forming thickness of the steel billet, after the operation is finished, the steel billet on the feeding table is conveyed into the rough rolling frame, and the steel billet can be sequentially pressed by the lower rollers and the upper rollers at different intervals in a graded mode at the moment; therefore, rough rolling and pressing work of the whole steel billet is completed while one-time passing is guaranteed, and working time is saved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of billet rough rolling, and particularly relates to a billet rough rolling device. BACKGROUND

[0002] The billet rough rolling device plays a key role in steel production. The billet rough rolling device is used for strongly extruding the heated billet by means of rollers. When the billet enters the rough rolling mill, the rollers rotate at a certain speed, and the billet is brought into the gap between the rollers by friction. With the rotation of the rollers, the billet is gradually deformed under the pressure, and the thickness is reduced, the width is increased, and the length is also extended. In this process, the internal structure of the billet is also improved, the grain is refined, and the strength and toughness are also improved.

[0003] In the prior art, when the billet is pressed by rollers, the billet generally needs to be classified and pressed, that is, the billet is first subjected to primary pressing by the middle and lower two rollers with a large spacing, and then is lifted by the downstream conveying belt and sent to the upper and middle two rollers with a reduced spacing for classified pressing, so as to gradually reduce the thickness of the billet and complete the pressing work. However, the lifting of the conveying belt in this process consumes a certain amount of time, and the subsequent billet to be pressed must wait until the pressing of the previous billet is completed before being conveyed and pressed, so the work efficiency is not high. Therefore, in order to solve the problem, it is necessary to provide a billet rough rolling device. CONTENT OF THE INVENTION

[0004] The purpose of the application is to solve the above-mentioned problems, and provide a billet rough rolling device.

[0005] The technical scheme adopted by the application is as follows: a billet rough rolling device, comprising a bottom plate, the top of the bottom plate is fixedly installed with a feeding table, a conveying table and a plurality of rough rolling frames respectively, the top of the feeding table and the conveying table is rotatably installed with conveying rollers respectively, the top of the feeding table is fixedly installed with a pair of side plates on both sides, the inner side of the side plate is fixedly installed with a cross beam above, the bottom of the cross beam is rotatably installed with a chain wheel on both sides, the chain wheel is installed with a chain, the bottom of the cross beam is fixedly installed with a track plate on both sides, the track plate is slidably installed with a sliding block in the middle, the chain and the sliding block in the two track plates are fixedly connected, and the bottom of the sliding block is fixedly installed with a centering wheel.

[0006] The middle part of the rough rolling frame is slidably installed with a U-shaped plate, the lower part of the inner ring of the rough rolling frame is rotatably installed with a lower roller through a bearing, the inner side of the U-shaped plate is rotatably installed with an upper roller through a bearing, the right side of the U-shaped plate is fixedly installed with an upper T-shaped rod, the lower right side of the rough rolling frame is fixedly installed with a lower T-shaped rod, the two ends of the lower T-shaped rod are rotatably connected with a conical gear one and a conical gear two which are meshed with each other through bearings, the two ends of the upper T-shaped rod are rotatably connected with a conical gear three and a conical gear four which are meshed with each other through bearings, the inner end of the conical gear one is fixedly connected with the lower roller through a connecting rod, the inner end of the conical gear three is fixedly connected with the upper roller through a connecting rod, the top of the conical gear two is fixedly installed with a rotating shaft, the top of the rotating shaft is fixedly installed with a cross rod, and the bottom of the conical gear four is fixedly installed with a sleeve shaft which is sleeved on the cross rod.

[0007] In a preferred embodiment, the feeding table is located at an upstream section of the conveying belt, the conveying table is located at a downstream section, and the rough rolling frame is located between the feeding table and the conveying table.

[0008] In a preferred embodiment, the bottom left side of the cross beam is fixedly installed with a first motor, the output shaft of the first motor is fixedly connected with the top of the left side sprocket, and the top of the right side sprocket is rotatably connected with the bottom right side of the cross beam through a bearing.

[0009] In a preferred embodiment, the two track plates are respectively located at the front and rear sides of the chain moving position, the middle part of the track plate is provided with a limiting displacement groove which is matched with a sliding block, and the sliding block is slidably installed in the limiting displacement groove.

[0010] In a preferred embodiment, the middle part of the rough rolling frame is provided with a lifting groove which is matched with the U-shaped plate, and the top of the inner ring of the rough rolling frame is fixedly installed with a hydraulic rod whose elongated end is fixed with the U-shaped plate.

[0011] In a preferred embodiment, the top surface height of the lower roller is the same as that of the conveying roller, and the upper roller is located directly above the lower roller.

[0012] In a preferred embodiment, the right side of the rough rolling frame is fixedly installed with a reinforcing rod, the right end of the reinforcing rod is rotatably connected with the rotating shaft through a bearing, the top of the upper T-shaped rod is fixedly installed with a second motor, the output shaft at the bottom of the second motor is fixedly connected with the conical gear four, the bottom of the sleeve shaft is provided with a cross insertion groove which is matched with the cross rod, and the cross rod is insertedly installed in the cross insertion groove.

[0013] As described above, due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0014] 1. In this application, by setting up relevant structures on the feeding platform, when the heated steel billet is conveyed from upstream and passes through the two side plates on the feeding platform, the No. 1 motor is started to drive the sprocket on its output shaft to rotate. The rotation of the sprocket will drive the chain to move in an elliptical trajectory, thereby pulling the sliders in the track plates on both sides to slide towards each other. At this time, the two sliders sliding towards each other will pull the centering wheel at the bottom to move closer to each other, and then fit against the steel billet, pushing the steel billet to center, in preparation for the steel billet to enter the roughing frame for roughing pressing.

[0015] 2. In this application, by designing the relevant structures on the roughing frame, when the hydraulic rod is activated and drives the U-shaped plate to slide down or move up, the bevel gear four on the end of the T-shaped rod on the right side of the U-shaped plate will drive the sleeve shaft to move in a sleeved position on the cross rod. Since the cross rod has a cross-shaped structure, this allows the sleeve shaft to still drive the rotating shaft below the cross rod and the bevel gear two to rotate coaxially and at the same speed while the No. 2 motor drives the bevel gear four and the sleeve shaft to rotate, and the sleeve shaft can still drive the rotating shaft below the cross rod and the bevel gear two to rotate coaxially and at the same speed during the adjustment of the sleeve distance with the cross rod. The bevel gear four meshes with the upper right end of the bevel gear three, and the bevel gear two meshes with the lower right end of the bevel gear one. This allows the activation of the No. 2 motor to drive the upper and lower rollers connected by the connecting rod on the left end of the bevel gear three and the bevel gear one to rotate at the same speed but in opposite directions. Based on the above principle, before the billet is conveyed from the feeding platform, the hydraulic rods on each roughing frame are first activated to extend or retract, adjusting the distance between the lower and upper rollers on the inner side of each roughing frame. At this time, the distance between the lower and upper rollers on the inner side of each roughing frame is adjusted by decreasing the distance sequentially from the feeding platform to the conveying platform. At the same time, it is necessary to ensure that the distance between the lower and upper rollers and the upper roller of the last stage, i.e. the leftmost roughing frame, is the final required forming thickness of the billet. After this operation, the billet on the feeding platform is conveyed into the roughing frame. The billet will then be pressed in stages by the lower and upper rollers with different spacings, thus ensuring that the entire roughing pressing of the billet is completed in one pass, saving working time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 For this application Figure 1 Enlarged structural diagram of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the structure on the roughing frame in this application.

[0019] Marked in the figure: 1 - base plate, 2 - feeding table, 3 - conveying table, 4 - rough rolling frame, 5 - conveying roller, 6 - side plate, 7 - cross beam, 8 - chain wheel, 9 - No. 1 motor, 10 - chain, 11 - track plate, 12 - sliding block, 13 - centering wheel, 14 - U-shaped plate, 15 - hydraulic rod, 16 - lower roller, 17 - upper roller, 18 - upper T-shaped rod, 19 - lower T-shaped rod, 20 - bevel gear one, 21 - bevel gear two, 22 - bevel gear three, 23 - bevel gear four, 24 - reinforcing rod, 25 - rotating shaft, 26 - sleeve shaft, 27 - cross rod, 28 - No. 2 motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0021] Reference Figure 1 , 2 A billet rough rolling device, comprising a base plate 1, the top of the base plate 1 is respectively fixedly installed with a feeding table 2, a conveying table 3 and a plurality of rough rolling frames 4, the feeding table 2 is located at the upstream section of the conveying belt, the conveying table 3 is located at the downstream section, the rough rolling frames 4 are located between the feeding table 2 and the conveying table 3, the top of the feeding table 2 and the conveying table 3 are both rotationally installed with conveying rollers 5, the top of the feeding table 2 is fixedly installed with a pair of side plates 6 on both sides, the inner side of the side plates 6 is fixedly installed with a cross beam 7 above, the bottom of the cross beam 7 is rotationally installed with chain wheels 8 on both sides, the bottom of the left side of the cross beam 7 is fixedly installed with a No. 1 motor 9, the output shaft of the No. 1 motor 9 is fixedly connected with the top of the left side chain wheel 8, the top of the right side chain wheel 8 is rotationally connected with the bottom of the right side of the cross beam 7 through a bearing, the chain 10 is installed on the chain wheel 8, the bottom of the cross beam 7 is fixedly installed with track plates 11 on both sides, the track plates 11 are slidingly installed with sliding blocks 12 in the middle, the two track plates 11 are respectively located on the front and back sides of the chain 10 moving position, the middle of the track plate 11 is provided with a limiting displacement groove matched with the sliding block 12, the sliding block 12 is slidingly installed in the limiting displacement groove, the chain 10 is fixedly connected with the sliding blocks 12 in the two track plates 11, the bottom of the sliding block 12 is fixedly installed with a centering wheel 13.

[0022] By setting the relevant structure on the feeding table 2, when the heated billet is conveyed from the upstream and passes through the two side plates 6 on the feeding table 2, the No. 1 motor 9 is started to drive the chain wheel 8 on the output shaft to rotate, the rotation of the chain wheel 8 drives the chain 10 to move in an elliptical trajectory, thereby pulling the sliding blocks 12 in the two side track plates 11 to slide towards each other, at this time, the two sliding blocks 12 sliding towards each other pull the centering wheels 13 at the bottom to approach each other, thereby abutting on the billet, and pushing the billet to the center for the billet to enter the rough rolling frame 4 for rough rolling preparation.

[0023] Reference Figure 1 , 3 A U-shaped plate 14 is slidably installed in the middle of the roughing frame 4. A lifting groove adapted to the U-shaped plate 14 is opened in the middle of the roughing frame 4. A hydraulic rod 15 with its extended end fixed to the U-shaped plate 14 is fixedly installed at the top of the inner ring of the roughing frame 4. A lower roller 16 is rotatably installed below the inner ring of the roughing frame 4 via bearings. An upper roller 17 is rotatably installed on the inner side of the U-shaped plate 14 via bearings. The top surface of the lower roller 16 is at the same height as the conveyor roller 5. The upper roller 17 is located directly above the lower roller 16. An upper T-shaped rod 18 is fixedly installed on the right side of the U-shaped plate 14. A lower T-shaped rod 19 is fixedly installed on the lower right side of the roughing frame 4. The two ends of the lower T-shaped rod 19 are rotatably connected to meshing bevel gear 1 20 and bevel gear 21 via bearings. The two ends of the upper T-shaped rod 18 are rotatably connected to meshing bevel gears 20 and 21 via bearings. The conical gears 22 and 23 are provided. The inner end of the conical gear 1 20 is fixedly connected to the lower roller 16 via a connecting rod. The inner end of the conical gear 22 is fixedly connected to the upper roller 17 via a connecting rod. The top of the conical gear 21 is fixedly mounted with a rotating shaft 25. The right side of the roughing frame 4 is fixedly mounted with a reinforcing rod 24. The right end of the reinforcing rod 24 is rotatably connected to the rotating shaft 25 via a bearing. The top of the rotating shaft 25 is fixedly mounted with a cross rod 27. The bottom of the conical gear 23 is fixedly mounted with a sleeve shaft 26 that fits onto the cross rod 27. The top of the upper T-shaped rod 18 is fixedly mounted with a second motor 28. The output shaft at the bottom of the second motor 28 is fixedly connected to the conical gear 23. The bottom of the sleeve shaft 26 has a cross slot that matches the cross rod 27. The cross rod 27 is inserted into the cross slot.

[0024] When the U-shaped plate 14 is driven to slide down or move up by the hydraulic rod 15, the tapered gear four 23 on the end of the T-shaped rod 18 on the right side of the U-shaped plate 14 will drive the sleeve shaft 26 to move on the cross rod 27. Since the cross rod 27 is a cross-shaped structure, when the tapered gear four 23 and the sleeve shaft 26 are driven to rotate by the second motor 28, the sleeve shaft 26 can still drive the shaft 25 and the tapered gear two 21 below the cross rod 27 to rotate coaxially and at the same speed during the adjustment of the sleeve joint distance of the cross rod 27. The tapered gear four 23 meshes with the right upper end of the tapered gear three 22, and the tapered gear two 21 meshes with the right lower end of the tapered gear one 20, so that the start of the second motor 28 can drive the tapered gear three 22 and the tapered gear one 20 to rotate at the same speed and in opposite directions through the connecting rod connected to the upper roller 17 and the lower roller 16 on the left end. Based on the above principle, before the billet is conveyed from the feeding table 2, the hydraulic rod 15 of each rough rolling frame 4 is started to extend or contract to adjust the distance between the lower roller 16 and the upper roller 17 on the inner side of each rough rolling frame 4. At this time, the distance between the lower roller 16 and the upper roller 17 on the inner side of each rough rolling frame 4 is adjusted in turn according to the direction from the feeding table 2 to the conveying table 3, while ensuring that the distance between the lower roller 16 and the upper roller 17 of the last stage, i.e. the leftmost rough rolling frame 4, is the final required forming thickness of the billet. After the operation is completed, the billet on the feeding table 2 is conveyed into the rough rolling frame 4, and the billet will be subjected to hierarchical pressing by the lower roller 16 and the upper roller 17 with different distances in turn, so as to complete the rough rolling and pressing work of the entire billet at one time and save working time.

[0025] The implementation principle of the embodiment of the present application is:

[0026] Firstly, when the heated billet is conveyed from the upstream and passes through the two side plates 6 on the feeding table 2, the first motor 9 is started to drive the chain wheel 8 on the output shaft to rotate, the rotation of the chain wheel 8 drives the chain 10 to move in an elliptical trajectory, thereby pulling the sliding blocks 12 in the two side track plates 11 to slide towards each other. At this time, the two sliding blocks 12 sliding towards each other pull the centering wheels 13 at the bottom to move close to each other, thereby abutting on the billet and pushing the billet to the center, so as to prepare for the billet to enter the rough rolling frame 4 for rough rolling and pressing.

[0027] Furthermore, by designing the relevant structure on the rough rolling frame 4, when the hydraulic rod 15 drives the U-shaped plate 14 to slide down or move up, the tapered gear four 23 on the end of the T-shaped rod 18 on the right side of the U-shaped plate 14 will drive the sleeve shaft 26 to move on the cross rod 27. Since the cross rod 27 is a cross-shaped structure, this makes the second motor 28 drive the tapered gear four 23 and the sleeve shaft 26 to rotate, and at the same time, the sleeve shaft 26 can still drive the rotating shaft 25 and the tapered gear two 21 below the cross rod 27 to rotate coaxially and at the same speed during the adjustment of the sleeve joint distance with the cross rod 27. The tapered gear four 23 meshes with the right upper end of the tapered gear three 22, and the tapered gear two 21 meshes with the right lower end of the tapered gear one 20, which makes the start of the second motor 28 drive the tapered gear three 22 and the tapered gear one 20 to rotate at the same speed and in opposite directions through the connecting rod connected to the upper roller 17 and the lower roller 16 on the left end. Based on the above principle, before the billet is conveyed from the feeding table 2, the hydraulic rod 15 on each rough rolling frame 4 is started to extend or contract to adjust the distance between the lower roller 16 and the upper roller 17 on the inner side of each rough rolling frame 4. At this time, the distance between the lower roller 16 and the upper roller 17 on the inner side of each rough rolling frame 4 is adjusted in turn according to the decreasing direction from the feeding table 2 to the conveying table 3, while ensuring that the distance between the lower roller 16 and the upper roller 17 on the last stage, i.e. the leftmost rough rolling frame 4, is the final required forming thickness of the billet. After the operation is completed, the billet on the feeding table 2 is conveyed into the rough rolling frame 4, and the billet will be graded and pressed by the lower roller 16 and the upper roller 17 with different distances in turn, thereby ensuring that the rough rolling and pressing work of the entire billet is completed at one time, saving working time.

[0028] The above are only preferred embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A billet rough rolling device comprising a floor (1), characterized in that: The top of the bottom plate (1) is respectively fixedly installed with a feeding table (2), a conveying table (3) and a plurality of rough rolling frames (4), the top of the feeding table (2) and the conveying table (3) is rotatably installed with a conveying roller (5), the top of the feeding table (2) is fixedly installed with a pair of side plates (6) on both sides, the inner side of the side plate (6) is fixedly installed with a cross beam (7) above, the bottom of the cross beam (7) is rotatably installed with a chain wheel (8) on both sides, the chain wheel (8) is installed with a chain (10) on the outside, the bottom of the cross beam (7) is fixedly installed with a track plate (11) on both sides, the middle of the track plate (11) is slidably installed with a sliding block (12), the chain (10) is fixedly connected with the sliding block (12) in the two track plates (11), the bottom of the sliding block (12) is fixedly installed with a centering wheel (13). The middle of the rough rolling frame (4) is slidably installed with a U-shaped plate (14), the inner ring of the rough rolling frame (4) is rotatably installed with a lower roller (16) below through a bearing, the inner side of the U-shaped plate (14) is rotatably installed with an upper roller (17) through a bearing, the right side of the U-shaped plate (14) is fixedly installed with an upper T-shaped rod (18), the right side of the rough rolling frame (4) is fixedly installed with a lower T-shaped rod (19) below, the lower T-shaped rod (19) is rotatably connected with a pair of intermeshing conical gears (20) and (21) at both ends through bearings, the upper T-shaped rod (18) is rotatably connected with a pair of intermeshing conical gears (22) and (23) at both ends through bearings, the inner end of the conical gear (20) is fixedly connected with the lower roller (16) through a connecting rod, the inner end of the conical gear (22) is fixedly connected with the upper roller (17) through a connecting rod, the top of the conical gear (21) is fixedly installed with a rotating shaft (25), the top of the rotating shaft (25) is fixedly installed with a cross rod (27), the bottom of the conical gear (23) is fixedly installed with a sleeve shaft (26) sleeved on the cross rod (27).

2. A billet rough rolling device according to claim 1, characterized in that: The feeding table (2) is located on the upstream section of the conveying belt, the conveying table (3) is located on the downstream section, and the rough rolling frame (4) is located between the feeding table (2) and the conveying table (3).

3. A billet rough rolling device as set forth in claim 1, characterized by: The bottom left side of the cross beam (7) is fixedly installed with a first motor (9), the output shaft of the first motor (9) is fixedly connected with the top of the left chain wheel (8), and the top of the right chain wheel (8) is rotatably connected with the bottom right side of the cross beam (7) through a bearing.

4. A billet rough rolling apparatus according to claim 1, wherein: The two track plates (11) are respectively located on the front and back sides of the chain (10) moving along the line, the middle of the track plate (11) is provided with a limiting displacement groove matched with the sliding block (12), and the sliding block (12) is slidably installed in the limiting displacement groove.

5. A billet rough rolling apparatus according to claim 1, wherein: The middle of the rough rolling frame (4) is provided with a lifting groove matched with the U-shaped plate (14), and the top of the inner ring of the rough rolling frame (4) is fixedly installed with a hydraulic rod (15) with an extended end fixed with the U-shaped plate (14).

6. A billet rough rolling apparatus according to claim 1, wherein: The top surface height of the lower roller (16) is the same as that of the conveying roller (5), and the upper roller (17) is located directly above the lower roller (16).

7. A billet rough rolling apparatus according to claim 1, wherein: The right side of the rough rolling frame (4) is fixedly provided with a reinforcing rod (24), the right end of the reinforcing rod (24) is rotatably connected with a rotating shaft (25) through a bearing, the top of the upper T-shaped rod (18) is fixedly provided with a second motor (28), the output shaft at the bottom of the second motor (28) is fixedly connected with a bevel gear four (23), the bottom of the sleeve shaft (26) is provided with a cross-shaped slot which is matched with a cross rod (27), and the cross rod (27) is insertedly installed in the cross-shaped slot.

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