Vertical rolling mill with position detection function
By introducing a PLC logic control module and position detection mechanism into the vertical rolling mill, the synchronous movement of the vertical rolling hydraulic pullback cylinder and the working roll is achieved, which solves the problem of easy damage to the sensor, improves the safety of the equipment and the roll gap adjustment range, and reduces maintenance costs.
Patent Information
- Application Number
- CN202422720888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-08
AI Technical Summary
The position detection sensors of existing vertical roller mills are easily damaged, resulting in poor equipment safety, long maintenance time and high costs, and a limited roll gap adjustment range of the vertical roller mill.
The PLC logic control module is used to interlock the synchronous movement of the vertical rolling hydraulic pullback cylinder and the vertical rolling work roll. Combined with the position detection mechanism and motor encoder, accurate position detection is achieved, and the interlocking control of the drive motor is realized through the PLC logic control module.
The maintenance convenience, safety and stability of the vertical roller mill are improved, the roll gap adjustment range is expanded, and the equipment maintenance cost is reduced.
Smart Images
Figure CN223367832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rolling mills, in particular to a vertical roller rolling mill with a position detection function. Background Art
[0002] The four-roll reversible rolling mill for wide and thick plates is a large-scale steel rolling equipment for producing plates, among which the vertical roller mill (abbreviated as vertical roller) is an important equipment for controlling the width of the plates. The plate edges are pressed into the edges by setting the required vertical roller width to ensure the controllable width of the plates. It is mainly composed of the side pressure motor, the pullback cylinder, the AWC, the vertical roller main motor and other parts. The pullback cylinder is an important device for opening the vertical roller gap during the vertical rolling process. The width of the roll gap is detected based on the data of the side pressure motor encoder on the one hand, and the position detection sensor is another factor involved in position control. Under normal circumstances, the side pressure motor pushes the vertical roller working roll forward to narrow the roll gap. When the roll gap is opened, the pullback cylinder drives the vertical roller working roll to move outward along with the side pressure motor, and detects the stroke through the built-in position detection sensor of the pullback cylinder, which is synchronously compared with the stroke of the side pressure motor encoder to ensure the consistency of the overall movement of the vertical roller working roll. The pullback cylinder and position detection sensor are supporting equipment. Due to the influence of the on-site environment, high-temperature oil has a great impact on the detection components in the cylinder. The built-in sensor and the pullback cylinder are prone to oil leakage at the installation joint, and the built-in magnetic ring is prone to jamming. Once an abnormality occurs in the cylinder or the detection component is damaged, the entire cylinder body must be replaced or the sensor must be replaced, which takes a long time, costs a lot, and requires a long maintenance time. In order to meet the needs of roll gap adjustment, the conventional vertical roller mill has a relatively complex structure of the power drive part of the vertical roller mill, which limits the roll gap adjustment range of the vertical roller mill. In addition, the existing vertical roller mill often has the position detection sensor damaged, which then interlocks the vertical roller mill to stop quickly. Not only can the safety of the equipment be failed to be guaranteed, but it also has an adverse effect on smooth production. Utility Model Content
[0003] Technical problems solved: In response to the technical problems existing in the working process of the vertical roller mill in the prior art, the utility model provides a vertical roller mill with a position detection function, which has the advantages of long service life, convenient maintenance, low cost and good safety.
[0004] Technical solution: The utility model discloses a vertical roller mill with a position detection function, which includes a side support frame, wherein one side of the side support frame is fixedly connected to a first vertical roller support frame and a second vertical roller support frame which are arranged correspondingly above and below, and a channel for the slab to pass through is formed between the first vertical roller support frame and the second vertical roller support frame;
[0005] A limiting groove is formed in the frames of the first vertical roller support frame and the second vertical roller support frame, and a fixed vertical roller assembly and a movable vertical roller assembly are respectively vertically arranged at both ends of the limiting groove, and the movable vertical roller assembly is correspondingly arranged in the limiting groove at one end away from the side support frame;
[0006] The first vertical roller support frame and the second vertical roller support frame are respectively provided with a driving connection end at one end away from the side support frame, and the two driving connection ends are fixedly supported and connected by a connecting piece;
[0007] The movable vertical roller assembly includes vertical roller bearing plates that are slidably connected to the first vertical roller support frame and the second vertical roller support frame, and a working vertical roller is rotatably connected between the two vertical roller bearing plates; a pull-back cylinder and a side pressure motor are respectively provided at the two drive connection ends, which are connected to the corresponding vertical roller bearing plates.
[0008] A position detection mechanism is correspondingly provided on the frame on the length side of the limit groove of the first vertical roller support frame or the second vertical roller support frame. The position detection mechanism includes two sensor brackets arranged opposite to each other, a magnetic rod and a magnetic ring slidably connected to the magnetic rod are fixedly connected between the two sensor brackets, a connecting arm is provided on the vertical roller bearing plate of the movable vertical roller assembly, the distal end of the connecting arm is fixedly connected to the magnetic ring, and one end of the magnetic rod is provided with a terminal electrically connected to the PLC logic control module;
[0009] The side pressure motor is correspondingly provided with a motor encoder, and the motor encoder and the position detection mechanism are interlocked and controlled by a PLC logic control module.
[0010] Preferably, a locking mechanism is correspondingly provided at the driving connection end of the first vertical roller support frame or the second vertical roller support frame.
[0011] Preferably, the movable vertical roller assembly has the same structure as the fixed vertical roller assembly, and the vertical roller bearing plate and the connection side of the limiting groove of the first vertical roller support frame and the second vertical roller support frame are respectively provided with clamping side plates, and the limiting groove is respectively provided with guide rails for fixing the clamping side plates on both sides along its length direction.
[0012] Preferably, the movable vertical roller assembly and one end of the fixed vertical roller assembly are correspondingly provided with a rolling mill drive mechanism and a transmission;
[0013] The rolling mill drive mechanism includes a motor base and a drive motor fixedly mounted thereon;
[0014] The transmission comprises a power main shaft connected to the drive shaft of the drive motor via a coupling and at least two first drive shafts and a second drive shaft having the same output rotation speed;
[0015] The first drive shaft is connected to the fixed vertical roller assembly through a first universal transmission connecting rod, and the second drive shaft is connected to the movable vertical roller assembly through a second universal transmission connecting rod.
[0016] Preferably, the first universal transmission link and the second universal transmission link have the same structure, and both include a driving link and universal connection ends respectively arranged at both ends of the driving link, and the universal connection ends are respectively connected to the first drive shaft or the second drive shaft, the fixed vertical roller assembly or the working vertical roller shaft end of the movable vertical roller assembly.
[0017] Preferably, a limiting assembly is provided on the corresponding sides of the fixed vertical roller assembly and the movable vertical roller assembly, and the limiting assembly includes a locking cylinder and a positioning concave block which are respectively arranged on the vertical roller bearing plates of the fixed vertical roller assembly and the movable vertical roller assembly. A positioning protrusion which can be correspondingly engaged in the positioning concave block is provided at the front end of the locking cylinder.
[0018] Compared with the prior art, the present invention has at least the following beneficial effects:
[0019] 1. The vertical roller mill of the present invention uses a PLC logic control module to achieve synchronous movement of the vertical roller hydraulic pullback cylinder and the forward or backward movement of the vertical roller working roll. A position detection mechanism is provided on the outside of the vertical roller working roll to detect the precise pullback position. The position detection mechanism and the encoder of the drive motor are interlocked and controlled by the PLC logic control module, thereby making the vertical roller mill quick to maintain, safe, stable and reliable.
[0020] 2. The rolling mill drive mechanism has a simple structure and stable operation, which can meet the needs of roller gap width adjustment in a large range. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is the front view of the vertical roller mill structure of the utility model;
[0022] Figure 2 for Figure 1 Top view of the connection structure between the neutral roller support frame and the fixed roller assembly and movable roller assembly.
[0023] Figure numerals: 100, vertical roller mill; 1, rolling mill drive mechanism; 2, motor seat; 3, drive motor; 4, coupling; 5, transmission gearbox; 6, first drive shaft; 7, second drive shaft; 8, first universal transmission connecting rod; 9, second universal transmission connecting rod; 10, first vertical roller support frame; 11, fixed vertical roller assembly; 12, movable vertical roller assembly; 13, side support frame; 14, second vertical roller support frame; 15, drive connection end; 16, locking mechanism; 17, pull-back cylinder; 18, side pressure motor; 19, limit groove; 20, guide rail; 21, vertical roller bearing plate; 22, clamping side plate; 23, positioning protrusion; 24, positioning recess; 25, locking cylinder; 26, position detection mechanism; 27, sensor bracket; 28, magnetic rod; 29, magnetic ring; 30, terminal; 31, connecting arm. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following Figures 1 and 2 The technical solutions of the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.
[0025] like Figures 1 and 2 As shown, an embodiment of the present invention discloses a vertical roller mill with position detection function. The vertical roller mill 100 includes a side support frame 13. A first vertical roller support frame 10 and a second vertical roller support frame 14 are fixedly connected to one side of the side support frame 13, and a passage for the slab to pass through is formed between the first vertical roller support frame 10 and the second vertical roller support frame 14. A limiting groove 19 is formed within the first and second vertical roller support frames 10, 14. A fixed vertical roller assembly 11 and a movable vertical roller assembly 12 are vertically disposed at both ends of the limiting groove 19. The movable vertical roller assembly 12 is disposed within the limiting groove 19 at the end away from the side support frame 13. By adjusting the spacing between the movable vertical roller assembly 12 and the fixed vertical roller assembly 11, the mill can meet the requirements of edge-aligning rolling of slabs of different widths. It should be noted that the vertical rollers included in the fixed vertical roller assembly 11 and the movable vertical roller assembly 12 can both serve as working rolls of the mill and, in this embodiment, are equipped with a power drive.
[0026] A driving connection end 15 is respectively provided at one end of the first vertical roller support frame 10 and the second vertical roller support frame 14 away from the side support frame 13, and the two driving connection ends 15 are fixedly supported and connected by a connecting piece, that is, the first vertical roller support frame 10, the second vertical roller support frame 14 and the side support frame 13 form a closed space for the slab to pass through in the vertical plane, thereby improving the stability and safety of the slab during rolling.
[0027] The movable vertical roller assembly 12 has the same structure as the fixed vertical roller assembly 11. The movable vertical roller assembly 12 includes vertical roller bearing plates 21 that are slidably connected to the first vertical roller support frame 10 and the second vertical roller support frame 14 in an upper and lower direction, and a working vertical roller is rotatably connected between the two vertical roller bearing plates 21. The vertical roller bearing plates 21 of the movable vertical roller assembly 12 and the fixed vertical roller assembly 11 are respectively provided with clamping side plates 22 on the sides connected to the limit grooves 19 of the first vertical roller support frame 10 and the second vertical roller support frame 14. The limit grooves 19 are respectively provided with guide rails 20 along their length directions for the clamping side plates 22 to be fixed and clamped. The movable vertical roller assembly 12 can move along the guide rails 20 through its clamping side plates 22, and the fixed vertical roller assembly 11 can also move along the guide rails 20 through the clamping side plates 22. However, in order to reduce the difficulty of the vertical roller gap conditions, the fixed vertical roller assembly 11 is fixedly connected to the first vertical roller support frame 10 and the second vertical roller support frame 14.
[0028] In a specific embodiment, the two drive connection ends 15 are respectively provided with a pullback cylinder 17 and a side pressure motor 18 that are transmission-connected to the corresponding vertical roller bearing plates 21. The pullback cylinder 17 cooperates with the pressure measuring motor to adjust the roll gap width between the movable vertical roller assembly 12 relative to the fixed vertical roller assembly 11. It should be noted that the pullback cylinder 17 and side pressure motor 18 corresponding to the two drive connection ends 15 can be selected according to needs and are not limited to the combination scheme shown above.
[0029] like Figure 2As shown, a position detection mechanism 26 is provided on the corresponding frame on the lengthwise side of the limiting slot 19 of the first vertical roller support frame 10 or the second vertical roller support frame 14. The position detection mechanism 26 includes two sensor brackets 27 arranged opposite each other. A magnetic rod 28 and a magnetic ring 29 are fixedly connected to the magnetic rod 28 between the two sensor brackets 27. A connecting arm 31 is provided on the vertical roller bearing plate 21 of the movable vertical roller assembly 12. The distal end of the connecting arm 31 is fixedly connected to the magnetic ring 29. One end of the magnetic rod 28 is provided with a terminal 30 electrically connected to the PLC logic control module. During operation, the magnetic ring 29 can move synchronously with the movable vertical roller assembly 12 during the roll gap adjustment process through the connecting arm 31, so that precise position data can be calculated by the PLC logic control module. The side pressure motor 18 is provided with a motor encoder corresponding to the motor encoder. The motor encoder and the position detection mechanism 26 are interlocked and controlled by the PLC logic control module. After the PLC logic control module collects the movement data of the position detection mechanism 26, it calculates the movement stroke data of the pull-back cylinder 17 and the calculated stroke data of the side pressure motor 18 encoder, and compares the data in synchronization in the PLC logic control program, thereby triggering the corresponding logic to generate the corresponding interlock, so as to achieve the purpose of synchronous movement of the pull-back cylinder 17 and the movable vertical roller assembly 12 forward or backward. For example, when the forward or backward gap deviation between the vertical rolling pull-back cylinder 17 and the movable vertical roller assembly 12 is greater than 30mm, an alarm is generated, indicating that the movable vertical roller assembly 12 driven by the pull-back cylinder 17 and the side pressure motor 18 screw has been disengaged, and the interlocked side pressure motor 18 generates a quick stop action to protect the equipment, and the equipment maintenance personnel confirm on site; when the gap is less than 30mm after the pull-back cylinder 17 drives the movable vertical roller assembly 12 to be close to the side pressure motor 18 screw, the alarm is contacted and the normal operation of the equipment is automatically restored. The vertical roller mill realizes the synchronous movement of the vertical roller hydraulic pullback cylinder 17 and the forward or backward movement of the vertical roller working roll through the PLC logic control module. A position detection mechanism 26 is correspondingly provided outside the vertical roller working roll. The precise position of the pullback is detected by the position detection mechanism 26, and the interlocking control of the position detection mechanism 26 and the encoder of the drive motor 3 is realized through the PLC logic control module, thereby making the maintenance of the vertical roller mill fast, safe, stable and reliable.
[0030] In a preferred embodiment, if Figures 1 and 2 As shown, the driving connection end 15 of the first vertical roller support frame 10 or the second vertical roller support frame 14 is correspondingly provided with a locking mechanism 16, which adopts a screw structure to realize the locking function. It can be provided corresponding to the pull-back cylinder 17 or the side pressure motor 18 without limitation.
[0031] In a preferred embodiment, if Figure 1As shown, a rolling mill drive mechanism 1 and a transmission 5 are provided at one end of the movable vertical roller assembly 12 and the fixed vertical roller assembly 11, respectively. The rolling mill drive mechanism 1 includes a motor base 2 and a drive motor 3 fixed thereon. The transmission 5 includes a power main shaft that is transmission-connected to the drive shaft of the drive motor 3 via a coupling 4, and at least two first and second drive shafts 6 and 7 having the same output rotational speed. The first drive shaft 6 is transmission-connected to the fixed vertical roller assembly 11 via a first universal transmission link 8, and the second drive shaft 7 is transmission-connected to the movable vertical roller assembly 12 via a second universal transmission link 9. The first and second universal transmission links 8 and 9 have the same structure, each including a drive link and universal connection ends respectively provided at both ends of the drive link. The universal connection ends are transmission-connected to the working vertical roller shaft ends of the first or second drive shaft 6 or 7, the fixed vertical roller assembly 11, or the movable vertical roller assembly 12, respectively. During operation, the rolling mill drive mechanism 1 realizes the synchronous rotation of the fixed vertical roller assembly 11 and the movable vertical roller assembly 12 through the transmission 5 and the first universal transmission connecting rod 8 and the second universal transmission connecting rod 9, respectively, to meet the side-by-side operation of the slab; in addition, the first universal transmission connecting rod 8 and the second universal transmission connecting rod 9 can meet the adjustment of the roll gap width between the movable vertical roller assembly 12 and the fixed vertical roller assembly 11.
[0032] like Figure 2 As shown, the corresponding sides of the fixed vertical roller assembly 11 and the movable vertical roller assembly are provided with a limit assembly, which includes a locking cylinder 25 and a positioning recess 24 which are respectively arranged on the vertical roller bearing plates of the fixed vertical roller assembly 11 and the movable vertical roller assembly 12. The front end of the locking cylinder 25 is provided with a positioning protrusion 23 which can be correspondingly engaged in the positioning recess 24, thereby achieving a fixed limitation of the width position between the fixed vertical roller assembly 11 and the movable vertical roller assembly.
[0033] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A vertical roller mill with position detection function, characterized in that: The vertical roller mill (100) comprises a side support frame (13), one side of the side support frame (13) being fixedly connected to a first vertical roller support frame (10) and a second vertical roller support frame (14) which are arranged correspondingly above and below, and a passage for the slab to pass through is formed between the first vertical roller support frame (10) and the second vertical roller support frame (14); A limiting groove (19) is formed in the frames of the first vertical roller support frame (10) and the second vertical roller support frame (14), and a fixed vertical roller assembly (11) and a movable vertical roller assembly (12) are respectively vertically arranged at both ends of the limiting groove (19), and the movable vertical roller assembly (12) is correspondingly arranged in the limiting groove (19) at one end away from the side support frame (13); The first vertical roller support frame (10) and the second vertical roller support frame (14) are respectively provided with a driving connection end (15) at one end away from the side support frame (13), and the two driving connection ends (15) are fixedly supported and connected by a connecting piece; The movable vertical roller assembly (12) includes vertical roller bearing plates (21) that are slidably connected to the first vertical roller support frame (10) and the second vertical roller support frame (14) in the upper and lower directions, and a working vertical roller is rotatably connected between the two vertical roller bearing plates (21); and a pull-back oil cylinder (17) and a side pressure motor (18) that are transmission-connected to the corresponding vertical roller bearing plates (21) are respectively provided at the two driving connection ends (15); A position detection mechanism (26) is correspondingly provided on the frame on the length side of the limiting groove (19) of the first vertical roller support frame (10) or the second vertical roller support frame (14), and the position detection mechanism (26) includes two sensor brackets (27) arranged opposite to each other, a magnetic rod (28) is fixedly connected between the two sensor brackets (27), and a magnetic ring (29) is slidably connected to the magnetic rod (28), a connecting arm (31) is provided on the vertical roller bearing plate (21) of the movable vertical roller assembly (12), the far end of the connecting arm (31) is fixedly connected to the magnetic ring (29), and one end of the magnetic rod (28) is provided with a terminal (30) electrically connected to the PLC logic control module; The side pressure motor (18) is correspondingly provided with a motor encoder, and the motor encoder and the position detection mechanism (26) are interlocked and controlled via a PLC logic control module.
2. The vertical roller mill with position detection function according to claim 1, characterized in that: The driving connection end (15) of the first vertical roller support frame (10) or the second vertical roller support frame (14) is correspondingly provided with a locking mechanism (16).
3. The vertical roller mill with position detection function according to claim 1, characterized in that: The movable vertical roller assembly (12) has the same structure as the fixed vertical roller assembly (11), and the vertical roller bearing plate (21) thereof is connected to the limiting groove (19) of the first vertical roller support frame (10) and the second vertical roller support frame (14) with a clamping side plate (22) provided on each side thereof, and the limiting groove (19) is provided with a guide rail (20) for fixing the clamping side plate (22) on both sides along its length direction.
4. The vertical roller mill with position detection function according to claim 1, characterized in that: The movable vertical roller assembly (12) and the fixed vertical roller assembly (11) are provided with a rolling mill drive mechanism (1) and a transmission (5) at one end thereof; The rolling mill drive mechanism (1) comprises a motor base (2) and a drive motor (3) fixedly mounted thereon; The transmission (5) comprises a power main shaft connected to the drive shaft of the drive motor (3) via a coupling (4) and at least two first drive shafts (6) and second drive shafts (7) having the same output rotation speed; The first drive shaft (6) is connected to the fixed vertical roller assembly (11) through a first universal transmission connecting rod (8), and the second drive shaft (7) is connected to the movable vertical roller assembly (12) through a second universal transmission connecting rod (9).
5. The vertical roller mill with position detection function according to claim 4, characterized in that: The first universal transmission connecting rod (8) and the second universal transmission connecting rod (9) have the same structure, both comprising a driving connecting rod and a universal connection end respectively arranged at both ends of the driving connecting rod, wherein the universal connection end is respectively connected to the working vertical roller shaft end of the first driving shaft (6) or the second driving shaft (7), the fixed vertical roller assembly (11) or the movable vertical roller assembly (12).
6. The vertical roller mill with position detection function according to claim 1, characterized in that: A limiting assembly is provided on the corresponding sides of the fixed vertical roller assembly (11) and the movable vertical roller assembly (12), and the limiting assembly includes a locking cylinder (25) and a positioning recess (24) which are respectively arranged on the vertical roller bearing plates of the fixed vertical roller assembly (11) and the movable vertical roller assembly (12). A positioning protrusion (23) which can be correspondingly engaged in the positioning recess (24) is provided at the front end of the locking cylinder (25).