Dummy bar centering device with position feedback

Abstract

The utility model discloses a dummy bar centering device with position feedback, which relates to the technical field of steel production and comprises a support frame, a trunnion support, a centering guide frame, a displacement sensor, a magnetic ring, a push head and a hydraulic cylinder. The centering guide frame and the trunnion bracket are mounted on the top surface of the support frame; the front portion of the hydraulic cylinder is installed on the centering guide frame in a penetrating mode, and the rear portion of the hydraulic cylinder is installed on the trunnion support. A push rod in the hydraulic cylinder is provided with the magnetic ring matched with the displacement sensor, and a detection rod of the displacement sensor is inserted into the push rod of the hydraulic cylinder and penetrates through the magnetic ring; and the push head is mounted at the front end of a push rod of the hydraulic cylinder. The dummy bar centering device can solve the problems that an existing dummy bar centering mode mainly depends on manual operation or a simple mechanical structure, the requirement for the technical level of operators is high in operation, errors are prone to being generated in the long-time using process, and production efficiency and product quality are affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel production and manufacturing, especially to a centering device of dummy bar of slab continuous casting machine equipment. BACKGROUND

[0002] As a kind of key process equipment, dummy bar plays a crucial role in the early stage of continuous casting machine production. Accurate centering and positioning of dummy bar on slab continuous casting machine in steel mill is one of the important links to ensure product quality and improve production efficiency. However, the traditional dummy bar centering device relies on manual operation or simple mechanical structure, which not only requires high technical level of operators, but also is prone to errors during long-term use, affecting production efficiency and product quality. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a dummy bar centering device with position feedback, which can solve the problem that the existing dummy bar centering method mainly relies on manual operation or simple mechanical structure, requires high technical level of operators, and is prone to errors during long-term use, affecting production efficiency and product quality.

[0004] To solve the above problems, the technical scheme of the utility model is as follows: the dummy bar centering device with position feedback includes a support frame, a trunnion support, a centering guide frame, a displacement sensor, a magnetic ring, a sensor protective cover, a push head and a hydraulic cylinder.

[0005] The centering guide frame is composed of two steel plates welded horizontally and vertically, the horizontal steel plate has mounting holes at four corners, and the vertical steel plate has a hole in the center for supporting the hydraulic cylinder; the trunnion support is a steel plate with an axle hole for supporting the hydraulic cylinder. The centering guide frame and the trunnion support are respectively installed at both ends of the top platform of the support frame; the front part of the hydraulic cylinder is installed on the centering guide frame, and the rear part of the hydraulic cylinder is installed on the trunnion support; the push rod in the hydraulic cylinder is provided with the magnetic ring matched with the displacement sensor, and the probe rod of the displacement sensor is inserted into the push rod of the hydraulic cylinder and passes through the magnetic ring; the push head is installed at the front end of the push rod of the hydraulic cylinder.

[0006] In the above technical scheme, a more specific scheme is as follows: a push rod shaft sleeve is provided on the centering guide frame, and the push rod shaft sleeve is fixed on the centering guide frame by shaft end baffle and bolts; the centering guide frame is fixed on the top platform of the support frame by gasket set and bolts, and the centering guide frame plays the role of fixing, supporting and guiding the push rod of the front part of the hydraulic cylinder.

[0007] Further, ear shafts are symmetrically arranged on both sides of the rear part of the hydraulic cylinder body, and the ear shafts are installed on the trunnion support through ear shaft shaft sleeves.

[0008] Further, the trunnion support bottom surface and the support frame top surface platform are provided with a trunnion support positioning key, the trunnion support positioning key is fixed on the support frame by bolts, and the trunnion support is fixed on the support frame by the trunnion support positioning key; the trunnion support plays a role of positioning and fixing the hydraulic cylinder and providing a relatively stable and flat working environment for the displacement sensor. When the equipment is subjected to a larger axial impact, the trunnion support positioning key is subjected to shearing force, the connecting parts of the equipment are protected, and the trunnion support does not change a larger position due to the existence of the trunnion support positioning key, so that the working environment of the displacement sensor is stable.

[0009] Further, the hydraulic cylinder is provided with a long hole in the push rod, and the magnetic ring is installed in the front end of the long hole.

[0010] Further, the displacement sensor comprises a sensor body, a wire connector and a detection rod connected with the sensor body respectively; the detection rod is inserted into the long hole of the push rod of the hydraulic cylinder through the displacement sensor mounting hole at the tail end of the hydraulic cylinder and penetrates the magnetic ring; and the sensor body is fixed on the end surface of the hydraulic cylinder body by screwing.

[0011] Further, a safety shield for blocking heat radiation is arranged in front of the centering guide frame, and the safety shield is fixedly installed on the support frame.

[0012] Further, a sensor shield is arranged on the periphery of the sensor body and the wire connector of the displacement sensor, and the sensor shield is fixedly installed on the rear end of the hydraulic cylinder by screws through a sensor shield mounting hole; an opening is arranged in the side wall of the sensor shield for facilitating the connection of the wire of the wire connector of the displacement sensor.

[0013] Further, the hydraulic cylinder is a water-cooled hydraulic cylinder with a specification of φ100 / φ70*400 and a model of SME001355-13, and cooling water is used for cooling during production to ensure that the displacement sensor inside the hydraulic cylinder can work normally.

[0014] Further, the displacement sensor has a model of BLT-P214040A0500, and the magnetic ring has a model of BLT-P-1013-4R; the displacement sensor and the magnetic ring are matched with the corresponding hydraulic cylinder.

[0015] By adopting the technical scheme, the present application has the following beneficial effects compared with the prior art:

[0016] 1. Improved centering accuracy: Real-time monitoring of the position and angular deviation of the dummy bar by high-precision sensors, and the use of advanced feedback control algorithms ensure that the dummy bar always maintains the optimal position. Compared with traditional manual or mechanical centering methods, the accuracy is significantly improved, reducing the generation of deviation and error.

[0017] 2. Enhanced automation level: The device integrates an automatic control system that can adjust the position of the dummy bar in real time without human intervention. The improvement of automation level not only reduces the dependence on operators, but also reduces labor intensity and improves production efficiency.

[0018] 3. Improved production efficiency: Real-time monitoring and automatic adjustment ensure the continuity and stability of the dummying process, reducing downtime and adjustment time caused by position deviation, thereby significantly improving overall production efficiency.

[0019] 4. Improved product quality: Precise centering and stable dummying process ensure the uniformity and consistency of the produced cast billets, reducing the defect rate of products and improving the quality and market competitiveness of products.

[0020] 5. Reduced maintenance cost: Real-time monitoring and data analysis functions can provide early warning of equipment failure, reducing unexpected downtime and maintenance time. Through automatic adjustment and optimization of the system, damage and maintenance requirements caused by equipment errors are reduced, and maintenance costs are reduced.

[0021] 6. Improved safety: Automation and intelligent design reduce manual operation and contact with equipment by operators, reducing the risk of operation and the incidence of work accidents, and improving the safety of the working environment.

[0022] 7. In summary, the dummy bar centering device with position feedback significantly improves the automation level and accuracy of the dummying process, improves production efficiency and product quality, reduces maintenance cost and operation risk, and has broad application prospects and economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a three-dimensional schematic view of the present utility model;

[0024] Figure 2 is a three-dimensional schematic view of the present utility model;

[0025] Figure 3 is Figure 1 , Figure 2 middle push head connection one end along the axis partial section view;

[0026] Figure 4 is Figure 3 middle along D-D section line section schematic view;

[0027] Figure 5 is the front view schematic diagram of the utility model;

[0028] Figure 6 is the left view schematic diagram of the utility model;

[0029] Figure 7 is the top view schematic diagram of the utility model;

[0030] Figure 8 is Figure 5 the section view along A-A section line schematic diagram in the middle;

[0031] Figure 9 is the three-dimensional structure schematic diagram of the centering guide frame in the utility model;

[0032] Figure 10 is the three-dimensional structure schematic diagram of the trunnion support in the utility model;

[0033] Figure 11 is the hydraulic cylinder structure schematic diagram in the utility model;

[0034] Figure 12 is Figure 11 the B direction schematic diagram in the middle;

[0035] Figure 13 is the displacement sensor structure schematic diagram in the utility model;

[0036] Figure 14 is Figure 13 the section view along C-C section line schematic diagram (positioning magnetic ring) in the middle;

[0037] Figure 15 is the three-dimensional structure schematic diagram of the sensor protective cover in the utility model;

[0038] Figure 16 is the front view schematic diagram of the sensor protective cover in the utility model;

[0039] Figure 17 is the arrangement schematic diagram of the slab continuous casting machine in the continuous casting area of the utility model;

[0040] Figure 18 is Figure 17 the section view along E-E section line schematic diagram in the middle.

[0041] The figure mark represents: 1, support frame; 2, trunnion support positioning key; 3, trunnion shaft sleeve; 4, trunnion support; 5, gasket set; 6, displacement sensor; 6-1, sensor body; 6-2, wiring plug; 6-3, probe rod; 7, shaft end baffle; 8, push head; 9, safety shield; 10, push rod shaft sleeve; 11, centering guide frame; 12, hydraulic cylinder; 12-1, displacement sensor mounting hole; 12-2, sensor shield mounting hole; 12-3, trunnion; 12-4, push rod; 13, sensor shield; 14, set screw; 15, magnetic ring. DETAILED DESCRIPTION

[0042] The utility model is further explained in detail below in combination with the drawings and examples:

[0043] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 The centering device of the dummy bar with position feedback of the utility model comprises a support frame 1, a support positioning key 2, a trunnion support 4, a centering guide frame 11, a displacement sensor 6, a magnetic ring 15, a sensor shield 13, a push head 8, a locking bolt 14, a safety shield 9 and a hydraulic cylinder 12.

[0044] As shown in Figure 9 , the centering guide frame 11 is composed of two steel plates welded horizontally and vertically, the horizontal steel plate is provided with mounting holes at four corners, and the vertical steel plate is provided with a hole in the center for supporting the hydraulic cylinder 12; as shown in Figure 10 , the trunnion support 4 is a steel plate provided with an axle hole for supporting the hydraulic cylinder 12. The centering guide frame 11 and the trunnion support 4 are respectively installed at both ends of the top platform of the support frame 1 in correspondence; the push rod 12-4 of the hydraulic cylinder 12 is inserted into the push rod shaft sleeve 10 in the centering guide frame 11, the push rod shaft sleeve 10 is fixed on the centering guide frame 11 by the shaft end baffle 7 through bolts, the centering guide frame 11 is fixed to the top end platform of the support frame 1 through the gasket set 5 and four bolts, and the centering guide frame 11 plays a role in fixing and supporting and guiding the push rod 12-4 of the front part of the hydraulic cylinder 12. The push rod 12-4 of the hydraulic cylinder 12 is provided with a long hole, and the front end of the long hole is fixedly provided with a magnetic ring 15 matched with the displacement sensor 6; the push head 8 is sleeved on the front end of the push rod 12-4; the push head 8 is fixed on the push rod 12-4 through the set screw 14.

[0045] The trunnion 12-3 is symmetrically arranged on both sides of the rear cylinder body of the hydraulic cylinder 12, and the trunnion 12-3 of the hydraulic cylinder 12 is installed on the trunnion support 4 through the trunnion shaft sleeve 3; the trunnion support positioning key 2 is arranged between the bottom surface of the trunnion support 4 and the top surface platform of the support frame 1, the trunnion support positioning key 2 is fixed on the support frame 1 through bolts, and the trunnion support 4 is fixed on the support frame 1 through the trunnion support positioning key 2; the trunnion support 4 plays a role of positioning and fixing the hydraulic cylinder 12, and provides a relatively stable and peaceful working environment for the displacement sensor 6. When the equipment is subjected to a large axial impact, the trunnion support positioning key 2 is subjected to shear force, the connecting parts of the equipment are protected, and the trunnion support 4 does not change a large position due to the existence of the trunnion support positioning key 2, so that the working environment of the displacement sensor 6 is stable.

[0046] As shown in Figure 11 and Figure 12 , the rear end surface of the hydraulic cylinder 12 is provided with a displacement sensor mounting hole 12-1 and a sensor protection cover mounting hole 12-2, and the displacement sensor mounting hole 12-1 is a threaded hole.

[0047] As shown in Figure 13 and Figure 14 , the displacement sensor 6 includes a sensor body 6-1, a wire connector 6-2 and a probe rod 6-3 connected with the sensor body 6-1 respectively; the probe rod 6-3 is inserted into the long hole of the push rod 12-4 of the hydraulic cylinder 12 through the displacement sensor mounting hole 12-1 at the tail end of the hydraulic cylinder 12 and penetrates the magnetic ring 15; the sensor body 6-1 is fixed on the end surface of the cylinder body of the hydraulic cylinder 12 in a threaded connection mode; the tail of the sensor body 6-1 is connected with the wire connector 6-2 connected with the control system.

[0048] The probe rod 6-2 of the sensor can know the displacement change amount of the equipment by detecting the relative position of the magnetic ring 15. When the push rod of the hydraulic cylinder 12 is pushed out, the magnetic ring 15 moves with the push rod to generate displacement change, and the displacement sensor 6 detects the push-out amount of the push rod of the hydraulic cylinder 12 through the relative position relationship between the probe rod and the magnetic ring 15, so as to complete the position detection and accurate control of the push rod of the hydraulic cylinder 12.

[0049] The hydraulic cylinder 12 and the displacement sensor 6 are less than 2 meters away from the hot blank during production, and the working environment is relatively poor due to high temperature and high humidity. Therefore, a safety protection cover 9 is arranged in front of the center guide frame 11 to block the heat radiation, and the safety protection cover 9 is fixedly installed on the support frame 1, as shown in Figure 1 , Figure 2 and Figure 3The hydraulic cylinder 12 is a water-cooled hydraulic cylinder, with a specification of φ100 / φ70*400, a model of SME001355-13, and cooling water is used for cooling during production to ensure that the displacement sensor 6 inside can work normally. The displacement sensor 6 has a model of BLT-P214040A0500, and the magnetic ring 15 has a model of BLT-P-1013-4R and is matched with the corresponding hydraulic cylinder; the displacement sensor 6 is located at the tail end of the equipment, and the relative position environment is good; in order to ensure its normal work, a sensor protection cover 13 is arranged outside to protect it; the sensor protection cover 13 is fixedly installed at the rear end of the hydraulic cylinder 12 through a sensor protection cover mounting hole 12-2 by means of screws; in order to facilitate the line connection of the plug 6-2 in the displacement sensor 6, an opening is formed in the side wall of the sensor protection cover 13, and the opening has a length of 150 mm and a width of 60 mm. Figure 15 and Figure 16 as shown.

[0050] As shown in Figure 17 and Figure 18 The present utility model is arranged in pairs in the strand delivery area of the continuous casting machine and is arranged symmetrically with the roller center line as the axis, and two pairs are arranged in general cases. The function is to ensure that the dummy bar rod is centered on the roller center line when the dummy bar is delivered, so that the dummy bar rod can reach the desired position of the crystallizer smoothly and does not interfere with other continuous casting machine components.

[0051] The present utility model installs a high-precision position sensor in the hydraulic cylinder, can detect the spatial position and angle deviation of the dummy bar rod in real time, transmits the collected data to the feedback control system, calculates the required adjustment amount based on the collected data through the preset PID control algorithm, converts the calculated adjustment amount into specific control signals by the controller, drives the corresponding adjustment of the execution mechanism, and ensures the accurate adjustment of the position of the dummy bar rod. Through the above technical scheme and specific technical measures, the dummy bar centering device with position feedback can greatly improve the automation and intelligent level of the dummy bar process, and improve the production efficiency and product quality.

Claims

1. A dummy bar centering device with position feedback, characterized by: It comprises a support frame (1), a trunnion bracket (4), a centering guide frame (11), a displacement sensor (6), a magnetic ring (15), a push head (8) and a hydraulic cylinder (12); The centering guide frame (11) and the trunnion bracket (4) are installed on the top surface platform of the support frame (1); the front part of the hydraulic cylinder (12) is installed on the centering guide frame (11), and the rear part of the hydraulic cylinder (12) is installed on the trunnion bracket (4); the push rod in the hydraulic cylinder (12) is provided with the magnetic ring (15) matched with the displacement sensor (6), the probe rod of the displacement sensor (6) is inserted into the long hole of the push rod (12-4) of the hydraulic cylinder (12) and penetrates through the magnetic ring (15); and the push head (8) is installed on the front end of the push rod of the hydraulic cylinder (12).

2. The trunnioning device for an ingot stick with position feedback according to claim 1, characterized in that: The centering guide frame (11) is provided with a push rod shaft sleeve (10) which is fixed on the centering guide frame (11) by the shaft end baffle (7) through bolts; and the centering guide frame (11) is fixed on the top end platform of the support frame (1) through the gasket group (5) and bolts.

3. The strip position feedback mandrel alignment device of claim 1 or 2, wherein: The rear part of the hydraulic cylinder (12) is provided with trunnions (12-3) symmetrically arranged on both sides of the cylinder body, and the trunnions (12-3) are installed on the trunnion bracket (4) through the trunnion shaft sleeve (3).

4. The trunnioning device for an ingot stick with position feedback according to claim 3, characterized in that: The bottom surface of the trunnion bracket (4) is provided with a trunnion bracket positioning key (2) between the top surface platform of the support frame (1), the trunnion bracket positioning key (2) is fixed on the support frame (1) through bolts, and the trunnion bracket (4) is fixed on the support frame (1) through the trunnion bracket positioning key (2).

5. The trunnioning device for an ingot stick with position feedback according to claim 4, characterized in that: The push rod (12-4) of the hydraulic cylinder (12) is provided with a long hole, and the magnetic ring (15) is installed in the front end of the long hole.

6. The trunnioning device for an ingot stick with position feedback according to claim 5, characterized in that: The displacement sensor (6) comprises a sensor body (6-1), a wire connector (6-2) and a probe rod (6-3) connected with the sensor body (6-1) respectively; the probe rod (6-3) is inserted into the long hole of the push rod (12-4) of the hydraulic cylinder (12) through the displacement sensor mounting hole (12-1) at the tail end of the hydraulic cylinder (12) and penetrates through the magnetic ring (15); and the sensor body (6-1) is fixed on the end surface of the cylinder body of the hydraulic cylinder (12) through threads.

7. The trunnioning device for an ingot stick with position feedback according to claim 6, characterized in that: The front part of the centering guide frame (11) is provided with a safety protective cover (9) which is fixedly installed on the support frame (1).

8. The trunnioning device for an ingot stick with position feedback according to claim 7, characterized in that: The periphery of the sensor body (6-1) and the wire connector (6-2) of the displacement sensor (6) is provided with a sensor protective cover (13) which is fixedly installed on the rear end of the hydraulic cylinder (12) through the sensor protective cover mounting hole (12-2) by screws, and an opening is arranged on the side wall of the sensor protective cover (13).

9. The trunnioning device for an ingot stick with position feedback according to claim 8, characterized in that: The hydraulic cylinder (12) is a water-cooled hydraulic cylinder with a specification of φ100 / φ70×400 and a model of SME001355-13.

10. The trunnioning device for an ingot stick with position feedback according to claim 9, characterized in that: The displacement sensor (6) is of the model BLT-P214040A0500, and the magnetic ring (15) is of the model BLT-P-1013-4R; both the displacement sensor (6) and the magnetic ring (15) are matched with corresponding hydraulic cylinders.

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