A continuous casting hydraulic servo vibration device

Abstract

The utility model discloses a kind of continuous casting hydraulic servo vibration devices, including vibration frame, its below is equipped with hydraulic cylinder, the telescopic rod of hydraulic cylinder is vertically set up upwards, and the top end of telescopic rod is fixedly connected to the middle part of vibration frame;Servo valve is set up on the side of hydraulic cylinder, and the piston cavity or piston rod cavity of hydraulic cylinder is connected with servo valve through valve port via hydraulic pipeline;Two elastic steel plate components are set up in vibration frame side, upper and lower interval, support frame is set up between two elastic steel plate components, and support frame is fixedly connected with vibration frame;Servo valve is covered with a protective cover, and the side of protective cover away from vibration frame is provided with mounting opening;Wherein, hydraulic cylinder is used to realize vibration by the up-down action of its telescopic rod, push vibration frame up-down action.The problem of long shutdown of high failure rate of existing servo valve in harsh environment is solved.

Description

Technical Field

[0001] This utility model belongs to the field of slab continuous casting vibration technology, specifically relating to a continuous casting hydraulic servo vibration device. Background Technology

[0002] In the continuous casting process of slabs, the vibration unit is a key piece of equipment to ensure the surface quality of the cast slabs and the continuity of production. The hydraulic servo valves of existing vibration tables are installed inside the secondary cooling chamber, an area that is constantly exposed to high temperature and humidity, typically ranging from 60 to 80°C and exceeding 90% humidity—far exceeding the temperature and humidity range required for normal operation of the servo valves. These harsh conditions lead to rapid aging of the servo valve seals, a decline in the insulation performance of the electromagnetic coils, and a significant increase in the failure rate.

[0003] Frequent malfunctions not only increase maintenance costs but also severely impact production efficiency. Each servo valve replacement requires at least 4 hours of machine downtime, accumulating to over 60 hours of downtime annually. Furthermore, due to the original structural design, the lower elastic steel plate is positioned low, and the servo valve is installed close to the secondary cooling chamber, making it more susceptible to environmental impacts during vibration. This layout not only reduces equipment lifespan but may also lead to unstable billet quality, hindering the overall operating efficiency and economic benefits of the continuous casting machine. Utility Model Content

[0004] The purpose of this invention is to provide a continuous casting hydraulic servo vibration device to solve the problems of high failure rate and long downtime of existing servo valves in harsh environments.

[0005] The present invention adopts the following technical solution: a continuous casting hydraulic servo vibration device, including a horizontally arranged vibration frame, a hydraulic cylinder arranged below it, the telescopic rod of the hydraulic cylinder being arranged vertically upward, and the top end of the telescopic rod being fixedly connected to the middle of the vibration frame; A servo valve is installed next to the hydraulic cylinder. The servo valve is connected to the piston chamber or piston rod chamber of the hydraulic cylinder through the valve port and hydraulic pipeline. Two elastic steel plate assemblies are installed on one side of the vibrating frame at intervals above and below, and a support frame is installed between the two elastic steel plate assemblies. The support frame is fixedly connected to the vibrating frame. The servo valve is covered with a protective cover, and the side of the protective cover away from the vibration frame has an installation opening; The hydraulic cylinder is used to drive the vibration frame to move up and down by moving its telescopic rod to achieve vibration; the support frame is used to follow the up and down vibration of the vibration frame; and two elastic steel plate assemblies are used to limit the up and down vibration of the support frame to ensure that the trajectory of the vibration frame reciprocates at high frequency in a near-sine wave form.

[0006] Furthermore, the elastic steel plate assembly includes multiple stacked elastic steel plates with gaps between adjacent elastic steel plates; each elastic steel plate assembly is clamped at both ends and in the middle by clamping members; the clamping members at both ends of the upper and lower elastic steel plate assemblies are fixedly connected to each other by a back plate.

[0007] Furthermore, the clamping component includes multiple fixing blocks, which are respectively disposed in the gap between adjacent elastic steel plates, and also includes two clamping plates respectively disposed on the upper and lower sides of the elastic steel plate assembly. The two clamping plates and each fixing block are detachably connected by bolts.

[0008] Furthermore, the vibration frame is equipped with multiple outlets, each of which is connected downwards to an upper cooling water pipe, which is connected to a lower cooling water pipe via a flexible rubber joint.

[0009] The beneficial effects of this invention are as follows: By optimizing the layout of the upper and lower elastic steel plate assemblies and placing the servo valve in a location far from the high-temperature and high-humidity secondary cooling chamber, the operating environment temperature of the servo valve is reduced to ≤50℃ and the humidity to ≤60%, significantly reducing the failure rate of the servo valve. The number of annual failures is reduced from 15-18 times to ≤5 times, the downtime for a single maintenance is shortened from ≥4 hours to ≤2 hours, and the cumulative downtime loss per year is reduced to ≤20 hours. Simultaneously, the use of multiple layers of elastic steel plates at intervals improves the vibration guidance accuracy of the vibrating frame, enhances the stability of billet quality, and improves production continuity. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a continuous casting hydraulic servo vibration device according to the present invention; Figure 2 for Figure 1 Side view; Figure 3 for Figure 2 AA section view in the middle; Figure 4 This is a schematic diagram showing the usage state of a continuous casting hydraulic servo vibration device according to this utility model.

[0011] Among them, 1. Vibration frame, 2. Hydraulic cylinder, 3. Telescopic rod, 4. Servo valve, 5. Support frame, 6. Protective cover, 7. Mounting opening, 8. Back plate, 9. Clamping parts, 10. Elastic steel plate assembly, 11. Upper cooling water pipe, 12. Lower cooling water pipe, 13. Secondary cooling chamber. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0013] This utility model provides a continuous casting hydraulic servo vibration device, such as... Figures 1 to 3As shown, it includes a horizontally arranged vibration frame 1, with a hydraulic cylinder 2 below it. The telescopic rod 3 of the hydraulic cylinder 2 is vertically upward, and the top end of the telescopic rod 3 is fixedly connected to the middle of the vibration frame 1.

[0014] A servo valve 4 is installed next to the hydraulic cylinder 2. The servo valve 4 is connected to the piston chamber or piston rod chamber of the hydraulic cylinder 2 through a valve port and a hydraulic pipeline. It drives the cylinder to move by adjusting the flow and pressure of the hydraulic oil. By adjusting the flow and pressure of the hydraulic oil, the servo valve 4 precisely controls the vibration frequency, amplitude and displacement of the hydraulic cylinder 2, ensuring the guiding accuracy and stability of the continuous casting machine's vibration table, thereby ensuring the quality of the steel billet.

[0015] Two elastic steel plate assemblies are arranged at intervals on one side and above and below the vibrating frame 1. A support frame 5 is arranged between the two elastic steel plate assemblies and is fixedly connected to the vibrating frame 1. A protective cover 6 is provided on the servo valve 4, and an installation opening 7 is provided on the side of the protective cover 6 away from the vibration frame 1. For example... Figure 4 As shown, in actual use, the middle position above the secondary cooling chamber 13 is open. Two continuous casting hydraulic servo vibration devices of this invention are respectively installed on both sides of this opening. The steam generated in the secondary cooling chamber 13 rises through the top opening and passes through the channel formed between the two continuous casting hydraulic servo vibration devices. Previously, the mounting port of the servo valve 4 was exposed to the path of this steam, which would increase the failure rate of the servo valve 4. This invention provides a protective cover 6 for the servo valve 4 and places the mounting opening 7 away from the steam channel, avoiding harsh operating environments and extending its service life.

[0016] Hydraulic cylinder 2 is used to push the vibrating frame 1 to move up and down by the up and down movement of its telescopic rod 3 to achieve vibration; support frame 5 is used to follow the up and down vibration of the vibrating frame 1; two elastic steel plate assemblies are used to limit the up and down vibration of the support frame 5 to ensure that the trajectory of the vibrating frame 1 performs high-frequency reciprocating vibration in a near-sine wave form.

[0017] Based on actual vibration requirements, simulation can be used to calculate data such as the thickness, gap, and distance between the upper and lower elastic steel plates of the continuous casting vibration table, ensuring the static strength safety factor, avoiding resonance between stiffness and natural frequency, ensuring stable vibration process, and achieving a safe, reliable, and lightweight design.

[0018] In some embodiments, the elastic steel plate assembly 10 includes a plurality of stacked elastic steel plates with a gap between adjacent elastic steel plates, typically 2-5 mm; each elastic steel plate assembly 10 is clamped at both ends and in the middle by clamping members 9; the clamping members 9 at both ends of the upper and lower elastic steel plate assemblies 10 are fixedly connected to each other by a back plate 8.

[0019] In some embodiments, the clamping member 9 includes a plurality of fixing blocks respectively disposed in the gap between adjacent elastic steel plates, and also includes two clamping plates respectively disposed on the upper and lower sides of the elastic steel plate assembly 10, wherein the two clamping plates and each fixing block are detachably connected by bolts.

[0020] In some embodiments, the vibration frame 1 is provided with multiple outlets, each of which is connected downward to an upper cooling water pipe 11. The upper cooling water pipe 11 is connected to a lower cooling water pipe 12 via a flexible rubber joint 12. Cooling water flows inside the cooling water pipes, which can achieve cooling of the entire vibration device and the area where the servo valve 4 is located. The protective cover 6 outside the servo valve, combined with the cooling system, can further extend the life of the servo valve and reduce maintenance costs.

[0021] The present invention relates to a method for using a continuous casting hydraulic servo vibration device: A vibration frame 1 is horizontally installed in the vibration unit of a continuous casting machine. A hydraulic cylinder 2 is located below the vibration frame 1, with its telescopic rod 3 vertically upward and fixedly connected to the middle of the vibration frame 1. Elastic steel plate assemblies 10 are spaced apart on both sides, fixed by clamping parts 9 and connected to a back plate 8 to ensure stable vibration trajectory. A servo valve 4 is installed beside the hydraulic cylinder 2, with its opening facing outward and covered by a protective cover 6. The protective cover 6 has an installation opening 7. The servo valve 4 is connected to the hydraulic cylinder 2 via a hydraulic pipeline. After the system is started, the servo valve 4 precisely adjusts the hydraulic oil flow and pressure, driving the telescopic rod 3 to move up and down, causing the vibration frame 1 to reciprocate at a near-sine wave high frequency. The elastic steel plate assemblies 10 limit the vibration direction and improve guiding accuracy. An upper cooling water pipe 11 is connected to the outlet of the vibration frame 1 and is connected to a lower cooling water pipe 12 via a flexible rubber joint to achieve cooling of the servo valve 4 area.

Claims

1. A continuous casting hydraulic servo vibration device, characterized in that, It includes a horizontally arranged vibration frame (1), with a hydraulic cylinder (2) below it. The telescopic rod (3) of the hydraulic cylinder (2) is vertically upward, and the top end of the telescopic rod (3) is fixedly connected to the middle part of the vibration frame (1). A servo valve (4) is provided next to the hydraulic cylinder (2). The servo valve (4) is connected to the piston chamber or piston rod chamber of the hydraulic cylinder (2) through the valve port and hydraulic pipeline. Two elastic steel plate assemblies are arranged on one side and at an interval between the top and bottom of the vibration frame (1), and a support frame (5) is arranged between the two elastic steel plate assemblies. The support frame (5) is fixedly connected to the vibration frame (1). The servo valve (4) is covered with a protective cover (6), and the protective cover (6) has an installation opening (7) on the side away from the vibration frame (1). The hydraulic cylinder (2) is used to push the vibrating frame (1) to move up and down by the up and down movement of its telescopic rod (3) to achieve vibration; the support frame (5) is used to follow the up and down vibration of the vibrating frame (1); the two elastic steel plate assemblies are used to limit the up and down vibration of the support frame (5) to ensure that the trajectory of the vibrating frame (1) reciprocates at high frequency in a near-sine wave form.

2. The continuous casting hydraulic servo vibration device as described in claim 1, characterized in that, The elastic steel plate assembly (10) includes multiple stacked elastic steel plates with gaps between adjacent elastic steel plates; each elastic steel plate assembly (10) is clamped at both ends and in the middle by clamping members (9); the clamping members (9) at both ends of the upper and lower elastic steel plate assemblies (10) are fixedly connected to each other by a back plate (8).

3. The continuous casting hydraulic servo vibration device as described in claim 2, characterized in that, The clamping member (9) includes multiple fixing blocks, which are respectively disposed in the gap between adjacent elastic steel plates, and also includes two clamping plates respectively disposed on the upper and lower sides of the elastic steel plate assembly (10). The two clamping plates and each fixing block are detachably connected by bolts.

4. A continuous casting hydraulic servo vibration device as described in claim 1 or 3, characterized in that, The vibration frame (1) is provided with multiple outlets, and each outlet is connected to an upper cooling water pipe (11) downwards. The upper cooling water pipe (11) is connected to a lower cooling water pipe (12) through a flexible rubber joint.

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