Four-bar linkage type vibrating device for continuous casting mold and using method

Abstract

The present application belongs to the technical field of metallurgical continuous casting, and particularly relates to a four-link type vibrating device for a continuous casting crystallizer and a use method. The four-link type vibrating device for the continuous casting crystallizer comprises a vibrating unit body, the vibrating unit body comprises a vibrating frame body, upper links and lower links are movably connected to the vibrating frame body on both sides thereof, first bearing assemblies are arranged at both ends of the upper links, second bearing assemblies are arranged at one end and a middle position of the lower links close to the vibrating frame body, limiters are arranged on both sides of the top of a fixed frame body, a guide rod module is connected between the limiters, a hydraulic cylinder driver is arranged on the left side of a cross beam, and a bumper is arranged below the cross beam close to one side of the hydraulic cylinder driver. The upper links and the lower links on both sides of the vibrating frame body can realize vibration of any waveform, the guide rod module between the limiters can effectively control the deflection errors of the crystallizer in the vertical and horizontal directions during the vibration process, and the quality of the cast slab is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of metallurgical continuous casting, and particularly relates to a four-link type vibrating device for a continuous casting crystallizer and a use method. BACKGROUND

[0002] The main function of the crystallizer vibrating device is to make the crystallizer reciprocate up and down, and more precisely, to make the crystallizer move along the radius of the continuous casting machine in an arc-like manner with a given amplitude, frequency and waveform skewness, so as to make demolding easier. Specifically, in the continuous casting process, when the billet is bonded with the crystallizer wall, if the crystallizer is fixed, the billet shell may be pulled apart to cause a breakout.

[0003] The four-link type crystallizer vibrating device has a series of advantages such as accurate and stable running track, large carrying capacity and strong adaptability, and thus becomes the most commonly used vibrating device on the small square billet or small round billet continuous casting machine. The existing four-link type crystallizer vibrating device drives the crystallizer to vibrate in a mechanical driving manner, i.e. through a mechanical structure driven by a motor to drive the crystallizer to vibrate. The driving mechanism composed of a motor, a speed reducer and an eccentric wheel not only has a large weight, a long transmission chain and a complex structure, but also requires the vibration parameters to be adjusted during shutdown. In addition, when the lubrication of the numerous hinged points is not good, the local wear of the bearing is easily serious, which not only increases the transmission power, but also reduces the precision of the arc-like vibration due to the gap generated by the wear, and causes the deflection to affect the quality of the billet. The servo motor driving is mainly realized by the frequent forward and reverse rotation and start-stop of the servo motor, which generates a large amount of heat and reduces the service life of the equipment. In addition, the carrying and impact resistance of the ball screw are difficult to compare with that of the hydraulic pressure. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a four-link type vibrating device for a continuous casting crystallizer and a use method. The device is provided with movable upper and lower links on both sides of the vibrating frame body, the transmission chain is short and easy to adjust, the vibration of any waveform can be realized, the amplitude, frequency and waveform skewness can be continuously adjusted online, the guide rod module and the buffer between the limiters can effectively control the deflection error of the continuous casting machine crystallizer in the longitudinal and transverse directions during the vibration process, and the quality of the billet is improved.

[0005] The technical solution of the present invention is as follows: a four-bar linkage vibration device for a continuous casting crystallizer, comprising a vibration unit body, the vibration unit body including a vibration frame body, an upper linkage and a lower linkage movably connected to the upper and lower sides of the vibration frame body respectively, the upper linkage having first bearing assemblies at both ends, the upper linkage being movably connected to the vibration frame body at one end via the first bearing assembly, and a fixed frame body at the other end, the lower linkage having second bearing assemblies at one end near the vibration frame body and at the middle position respectively, the lower linkage being movably connected to the vibration frame body at one end via the second bearing assembly, and a fixed frame body at the middle position, the lower linkage being connected to a crossbeam at the other end, limiters being provided on both sides of the top of the fixed frame body, a guide rod module being connected between the limiters, a lubrication module being provided on the right side of the crossbeam, a hydraulic cylinder driver being provided on the left side of the crossbeam, and a buffer being provided below the crossbeam near the hydraulic cylinder driver.

[0006] The extended lines of the center lines of the upper and lower connecting rods on both sides of the vibrating frame body intersect at the center of the outer arc of the continuous casting machine.

[0007] The fixed frame body is provided with a support at its lower part, and the support is fixedly connected to the foundation of the continuous casting machine.

[0008] An expansion joint is provided between the vibrating frame body and the fixed frame body. The expansion joint is a rubber or corrugated expansion joint, with an upper flange and a lower flange respectively. The vibrating frame body is provided with corresponding crystallizer water inlet hole, water return hole and foot roller water inlet hole. The crystallizer water inlet hole, water return hole and foot roller water inlet hole are respectively provided with sealing rings. After the crystallizer is placed on the vibrating frame body, the expansion joint is connected to the vibrating frame body through the upper flange and to the fixed frame body through the lower flange, forming a closed water circuit connection.

[0009] Limiters are provided on both sides of the top of the fixed frame body. The limiters are located between the vibrating frame body and the fixed frame body. The limiting gap of the limiters is less than the vertical stroke of the vibrating frame body generated within the effective stroke of the hydraulic cylinder driver.

[0010] Both the first bearing assembly and the second bearing assembly use self-aligning roller bearings.

[0011] The lubrication module includes a distributor and stainless steel pipes connected to the first bearing assembly and the second bearing assembly.

[0012] The guide rod module is provided with 4 sets, including a fixed frame ear plate, a vibration frame ear plate and a guide rod. The fixed frame ear plate is provided with a fixed frame guide sleeve, and the vibration frame ear plate is provided with a vibration frame guide sleeve. The two ends of the guide rod are respectively engaged with the fixed frame guide sleeve and the vibration frame guide sleeve. The fixed frame ear plate and the vibration frame ear plate are respectively provided with fastening nuts on both sides, and are fixedly connected to the guide rod by fastening nuts.

[0013] A method of using a four-bar linkage vibration device for a continuous casting mold, comprising the following steps:

[0014] S1: During operation, the closed-loop control of the continuous casting machine's servo hydraulic system is used to make the crystallizer on the vibrating frame body vibrate sinusoidally or non-sinusoidally according to a given waveform curve.

[0015] S2: The extension lines of the center lines of the upper and lower connecting rods on both sides of the vibrating frame body intersect at the center of the outer arc of the continuous casting machine, ensuring the running trajectory of the crystallizer. The buffer balances the inertial force of the vibrating frame body and the crystallizer components under gravity and motion. The guide rod modules in the left and right directions control the sway error of the continuous casting machine crystallizer in the longitudinal and transverse directions during vibration.

[0016] The technical advantages of this invention are as follows: 1. This invention features an upper and lower connecting rod that can be movably connected to both sides of the vibration frame body, resulting in high arc-guided precision; the transmission chain is short and easy to adjust, enabling vibration of arbitrary waveforms, with amplitude, frequency, and waveform skewness continuously adjustable online; sinusoidal and non-sinusoidal vibrations can be switched arbitrarily without stopping the machine, improving production efficiency; 2. This invention, through the guide rod module between the limiters, can effectively control the longitudinal and transverse sway errors of the continuous casting machine crystallizer during vibration, improving the quality of the cast billet; 3. This invention uses a telescopic joint, resulting in a compact structure and enabling automatic connection of the water circuit; 4. This invention improves the lubrication of the bearing assembly through the lubrication module, reducing the main wear of parts, extending the service life of the equipment, and reducing manufacturing costs.

[0017] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of a four-bar linkage vibration device for a continuous casting crystallizer according to an embodiment of the present invention.

[0019] Fig. 2 This is a schematic diagram of the vibration unit structure of a four-bar linkage vibration device for a continuous casting crystallizer according to an embodiment of the present invention.

[0020] Fig. 3 This is a side view of the vibration unit structure of a four-bar linkage vibration device for a continuous casting crystallizer according to an embodiment of the present invention.

[0021] Reference numerals: 1-Vibration unit body, 2-Hydraulic cylinder driver, 3-Damper, 4-Lubrication module, 5-Vibration frame body, 6-Upper connecting rod, 7-Lower connecting rod, 8-First bearing assembly, 9-Fixed frame body, 10-Limiter, 11-Guide rod module, 12-Crossbeam, 13-Expansion joint, 14-Second bearing assembly, 15-Upper flange, 16-Lower flange, 17-Support, 18-Fixed frame ear plate, 19-Fixed frame guide sleeve, 20-Vibration frame ear plate, 21-Vibration frame guide sleeve, 22-Guide rod Detailed Implementation Example 1

[0022] like Figs. 1-3 As shown, a four-bar linkage vibration device for a continuous casting crystallizer includes a vibration unit 1, which includes a vibration frame body 5. An upper connecting rod 6 and a lower connecting rod 7 are movably connected to the upper and lower sides of the vibration frame body 5, respectively. First bearing assemblies 8 are provided at both ends of the upper connecting rod 6. One end of the upper connecting rod 6 is movably connected to the vibration frame body 5 via the first bearing assembly 8, and the other end is movably connected to a fixed frame body 9. Second bearing assemblies 14 are provided at one end near the vibration frame body 5 and at the middle position of the lower connecting rod 7. One end of the lower connecting rod 7 is movably connected to the vibration frame body 5 via the second bearing assembly 14, and the middle part is movably connected to the fixed frame body 9. A crossbeam 12 is connected to the other end of the lower connecting rod 7. Limiters 10 are provided on both sides of the top of the fixed frame body 9, and a guide rod module 11 is connected between the limiters 10. A lubrication module 4 is provided on the right side of the crossbeam 12, and a hydraulic cylinder driver 2 is provided on the left side of the crossbeam 12. A buffer 3 is provided below the crossbeam 12 near the hydraulic cylinder driver 2.

[0023] In practical use, the present invention features an upper connecting rod 6 and a lower connecting rod 7 that are movably connected to the upper and lower sides of the vibration frame body 5, respectively, resulting in high arc-guided accuracy. The transmission chain is short and easy to adjust, enabling vibration of any waveform, and the amplitude, frequency, and waveform skewness can be continuously adjusted online. Sine and non-sine vibrations can be switched arbitrarily without stopping the machine, improving production efficiency. Through the guide rod module 11 between the limiters 10, the sway error of the continuous casting machine crystallizer in both longitudinal and transverse directions during vibration can be effectively controlled, improving the quality of the cast billet. Example 2

[0024] Preferably, based on Embodiment 1, in this embodiment, the extension lines of the center lines of the upper connecting rod 6 and the lower connecting rod 7 on both sides of the vibration frame body 5 intersect at the center of the outer arc of the continuous casting machine.

[0025] In actual use, the extended lines of the center lines of the upper connecting rod 6 and the lower connecting rod 7 on both sides of the vibrating frame body 5 of the present invention intersect at the center of the outer arc of the continuous casting machine, ensuring the running trajectory of the crystallizer. Example 3

[0026] Preferably, based on Embodiment 1 or Embodiment 2, in this embodiment, a support 17 is provided below the fixed frame body 9, and the support 17 is fixedly connected to the continuous casting machine foundation.

[0027] In actual use, the fixed frame body 9 of the present invention is provided with a support 17 below it, and the support 17 is convenient for fixed connection with the continuous casting machine foundation. Example 4

[0028] Preferably, based on Embodiment 1 or Embodiment 3, in this embodiment, a telescopic joint 13 is provided between the vibrating frame body 5 and the fixed frame body 9. The telescopic joint 13 is a rubber or water ripple telescopic joint, with an upper flange 15 and a lower flange 16 respectively. The vibrating frame body 5 is provided with corresponding crystallizer water inlet holes, water return holes, and foot roller water inlet holes. The crystallizer water inlet holes, water return holes, and foot roller water inlet holes are respectively provided with sealing rings. After the crystallizer is placed on the vibrating frame body 5, the telescopic joint 13 is connected to the vibrating frame body 5 through the upper flange 15 and to the fixed frame body 9 through the lower flange 16, forming a closed water circuit connection.

[0029] In actual use, the vibration frame body 5 and the fixed frame body 9 of the present invention automatically connect the inlet and outlet water pipes of the crystallizer and the foot roller through the telescopic joint 13, which is quick and easy. Example 5

[0030] Preferably, based on Embodiment 1 or Embodiment 4, in this embodiment, limiters 10 are respectively provided on both sides of the top of the fixed frame body 9. The limiters 10 are arranged between the vibration frame body 5 and the fixed frame body 9. The limiting gap of the limiters 10 is less than the up and down stroke generated by the vibration frame body 5 within the effective stroke of the hydraulic cylinder driver 2.

[0031] In actual use, the limiter 10 of the present invention is set between the vibrating frame body 5 and the fixed frame body 9. The limiting gap of the limiter 10 is less than the up and down stroke generated by the vibrating frame body 5 within the effective stroke of the hydraulic cylinder driver 2, so as to prevent the hydraulic cylinder driver 2 from exceeding the stroke and causing damage. Example 6

[0032] Preferably, based on Embodiment 1 or Embodiment 5, in this embodiment, both the first bearing assembly 8 and the second bearing assembly 14 are self-aligning roller bearing assemblies.

[0033] In actual use, both the first bearing assembly 8 and the second bearing assembly 14 of the present invention adopt self-aligning roller bearing assembly, which has high assembly accuracy. Example 7

[0034] Preferably, based on Embodiment 1 or Embodiment 6, in this embodiment, the lubrication module 4 includes a distributor and a stainless steel pipeline connected to the first bearing assembly 8 and the second bearing assembly 14.

[0035] In practical use, the present invention improves the lubrication of bearing assembly through lubrication module 4, reduces the main wear of parts, extends the service life of equipment, and reduces manufacturing costs. Example 8

[0036] Preferably, based on Embodiment 1 or Embodiment 7, in this embodiment, the guide rod module 11 is provided with 4 sets, including a fixed frame ear plate 18, a vibration frame ear plate 20 and a guide rod 22. The fixed frame ear plate 18 is provided with a fixed frame guide sleeve 19, and the vibration frame ear plate 20 is provided with a vibration frame guide sleeve 21. The two ends of the guide rod 22 are respectively engaged with the fixed frame guide sleeve 19 and the vibration frame guide sleeve 21. The fixed frame ear plate 18 and the vibration frame ear plate 20 are respectively provided with fastening nuts on both sides, and are fixedly connected to the guide rod 22 by fastening nuts.

[0037] In actual use, the guide rod module 11 of the present invention is provided with 4 sets, including a fixed frame ear plate 18, a vibration frame ear plate 20 and a guide rod 22. The fixed frame ear plate 18 is provided with a fixed frame guide sleeve 19, and the vibration frame ear plate 20 is provided with a vibration frame guide sleeve 21. The two ends of the guide rod 22 are respectively engaged with the fixed frame guide sleeve 19 and the vibration frame guide sleeve 21. The fixed frame ear plate 18 and the vibration frame ear plate 20 are respectively provided with fastening nuts on both sides, which are fixedly connected to the guide rod 22 through the fastening nuts. The guide rod module 11 in the left and right directions controls the sway error of the continuous casting machine crystallizer in the longitudinal and transverse directions during vibration. Example 9

[0038] A method of using a four-bar linkage vibration device for a continuous casting mold, comprising the following steps:

[0039] S1: During operation, the closed-loop control of the continuous casting machine's servo hydraulic system is used to make the crystallizer on the vibrating frame body 5 vibrate sinusoidally or non-sinusoidally according to the given waveform curve.

[0040] S2: The extension lines of the center lines of the upper connecting rod 6 and the lower connecting rod 7 on both sides of the vibrating frame body 5 intersect at the center of the outer arc of the continuous casting machine, ensuring the running trajectory of the crystallizer. The buffer 3 balances the inertial force of the vibrating frame body 5 and the crystallizer components under gravity and movement. The guide rod module 11 in the left and right directions controls the sway error of the continuous casting machine crystallizer in the longitudinal and transverse directions during vibration.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A four-bar linkage vibration device for a continuous casting crystallizer, characterized in that: The system includes a vibration unit (1), which includes a vibration frame body (5). An upper connecting rod (6) and a lower connecting rod (7) are movably connected to the upper and lower sides of the vibration frame body (5), respectively. The upper connecting rod (6) has a first bearing assembly (8) at each end. One end of the upper connecting rod (6) is movably connected to the vibration frame body (5) via the first bearing assembly (8), and the other end is movably connected to a fixed frame body (9). The lower connecting rod (7) is located near the vibration frame body (5) at one end and the middle... A second bearing assembly (14) is provided at each of the intermediate positions. The lower connecting rod (7) is movably connected to the vibration frame body (5) at one end through the second bearing assembly (14), and movably connected to the fixed frame body (9) at the middle. The other end of the lower connecting rod (7) is connected to a crossbeam (12). Limiters (10) are provided on both sides of the top of the fixed frame body (9). A guide rod module (11) is connected between the limiters (10). A lubrication module (4) is provided on the right side of the crossbeam (12). 12) A hydraulic cylinder driver (2) is provided on the left side. A buffer (3) is provided below the crossbeam (12) on the side near the hydraulic cylinder driver (2). Limiters (10) are provided on both sides of the top of the fixed frame body (9). The limiters (10) are located between the vibrating frame body (5) and the fixed frame body (9). The limiting gap of the limiters (10) is smaller than the vertical stroke generated by the vibrating frame body (5) within the effective stroke of the hydraulic cylinder driver (2). The guide rod module (11) is provided with 4 sets, including The device includes a fixed frame ear plate (18), a vibration frame ear plate (20), and a guide rod (22). The fixed frame ear plate (18) is provided with a fixed frame guide sleeve (19), and the vibration frame ear plate (20) is provided with a vibration frame guide sleeve (21). The two ends of the guide rod (22) are respectively engaged with the fixed frame guide sleeve (19) and the vibration frame guide sleeve (21). The fixed frame ear plate (18) and the vibration frame ear plate (20) are respectively provided with fastening nuts on both sides, which are fixedly connected to the guide rod (22) through the fastening nuts.

2. The four-bar linkage vibration device for a continuous casting crystallizer according to claim 1, characterized in that: The extension lines of the center lines of the upper connecting rod (6) and lower connecting rod (7) on both sides of the vibrating frame body (5) intersect at the center of the outer arc of the continuous casting machine.

3. The four-bar linkage vibration device for a continuous casting crystallizer according to claim 1, characterized in that: The fixed frame body (9) is provided with a support (17) below it, and the support (17) is fixedly connected to the foundation of the continuous casting machine.

4. The four-bar linkage vibration device for a continuous casting crystallizer according to claim 1, characterized in that: The vibration frame body (5) and the fixed frame body (9) are provided with a telescopic joint (13). The telescopic joint (13) is a rubber or water ripple telescopic joint. It is provided with an upper flange (15) and a lower flange (16) respectively. The vibration frame body (5) is provided with corresponding crystallizer water inlet hole, water return hole and foot roller water inlet hole. The crystallizer water inlet hole, water return hole and foot roller water inlet hole are respectively provided with sealing rings. After the crystallizer is placed on the vibration frame body (5), the telescopic joint (13) is connected to the vibration frame body (5) through the upper flange (15) and connected to the fixed frame body (9) through the lower flange (16), forming a closed water circuit connection.

5. The four-bar linkage vibration device for a continuous casting crystallizer according to claim 1, characterized in that: Both the first bearing assembly (8) and the second bearing assembly (14) are self-aligning roller bearing assemblies.

6. The four-bar linkage vibration device for a continuous casting crystallizer according to claim 1, characterized in that: The lubrication module (4) includes a distributor and stainless steel pipes connected to the first bearing assembly (8) and the second bearing assembly (14).

7. A method of using a four-bar linkage vibration device for a continuous casting mold, comprising using the four-bar linkage vibration device for a continuous casting mold as described in any one of claims 1 to 6, characterized in that: Includes the following steps: S1: During operation, the closed-loop control of the continuous casting machine servo hydraulic system is used to make the crystallizer on the vibrating frame body (5) vibrate sinusoidally or non-sinusoidally according to the given waveform curve. S2: The extension lines of the center lines of the upper connecting rod (6) and lower connecting rod (7) on both sides of the vibrating frame body (5) intersect at the center of the outer arc of the continuous casting machine to ensure the running trajectory of the crystallizer. The buffer (3) balances the inertial force of the vibrating frame body (5) and the crystallizer components under gravity and movement. The guide rod module (11) in the left and right directions controls the sway error of the continuous casting machine crystallizer in the longitudinal and transverse directions during vibration.

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