Anti-torsion position sensor external cylinder device

Abstract

The utility model relates to an anti-torsion position sensor external cylinder device, and belongs to the technical field of continuous casting bale rotary table lifting arm lifting equipment in the metallurgical industry. According to the technical scheme, the device comprises a main hydraulic cylinder (1), a main hydraulic cylinder piston rod (9), a bale rotary table lifting arm (4), a displacement sensor external cylinder (2), a displacement sensor (3), a first disc (5), a second disc (7), a third disc (8) and a displacement sensor external cylinder piston rod (10), the displacement sensor (3) is fixed to the cylinder body end of the displacement sensor external cylinder (2), and the first disc (5) is fixed to the main hydraulic cylinder piston rod (9); the second disc (7) and the third disc (8) are respectively fixed on the displacement sensor external cylinder piston rod (10), and the first disc (5) is clamped in a gap between the second disc (7) and the third disc (8). The torsion moment generated by rotation of the piston rod of the main hydraulic cylinder can be eliminated, and the piston rod of the external cylinder of the position sensor is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to an external cylinder device for an anti-torsion position sensor, belonging to the technical field of lifting equipment for continuous casting ladle turntable in the metallurgical industry. Background Technology

[0002] Continuous casting is a crucial process in steel rolling mill production, and the ladle turntable is a vital piece of equipment for transferring qualified molten steel from the converter steelmaking system to the continuous casting process. The main purpose of the ladle turntable lifting arm is to rapidly transfer the qualified molten steel produced in the converter steelmaking system to the downstream continuous casting system. During production, the ladle turntable lifting arm performs tasks such as receiving steel, lifting, rotating, and coordinating with slag line adjustments. The ladle lifting arm requires accurate position feedback. Conventional position detection methods use an external position sensor cylinder piston rod rigidly connected to the main hydraulic cylinder piston rod. However, this external position sensor cylinder is often damaged due to the rotation of the main hydraulic cylinder piston rod during lifting and lowering. This can lead to abnormal casting stops and forced shutdowns, and the speed of position adjustment also restricts the production rhythm. Therefore, an anti-torsion external position sensor cylinder device is crucial. Utility Model Content

[0003] The purpose of this invention is to provide an anti-torsion external cylinder device for a position sensor, which can eliminate the torsional torque generated by the rotation of the piston rod of the main hydraulic cylinder, prevent damage to the piston rod of the external cylinder for the position sensor, and solve the problems existing in the background art.

[0004] The technical solution of this utility model is:

[0005] An anti-torsion position sensor external cylinder device includes a main hydraulic cylinder, a main hydraulic cylinder piston rod, and a large turntable lifting arm connected to the main hydraulic cylinder piston rod via a spherical plain bearing. The device also includes a displacement sensor external cylinder, a displacement sensor, a first disk, a second disk, a third disk, and a displacement sensor external cylinder piston rod. The displacement sensor is fixed to the cylinder body end of the displacement sensor external cylinder. The first disk is fixed to the main hydraulic cylinder piston rod. The second and third disks are respectively fixed to the displacement sensor external cylinder piston rod. The first disk is engaged in the gap between the second and third disks.

[0006] Furthermore, the gap between disk two and disk three matches the thickness of disk one.

[0007] Furthermore, the main hydraulic cylinder and the external displacement sensor cylinder are arranged in parallel.

[0008] Using this invention, during the repeated lifting and lowering of the lifting arm of the large package turntable, the piston rod of the main hydraulic cylinder will rotate. Since disc one is fixed on the piston rod of the main hydraulic cylinder, disc one rotates in the gap between disc two and disc three. At the same time, disc one drives disc two and disc three to rise and fall with the piston rod of the main hydraulic cylinder. Disc two and disc three drive the piston rod of the external sensor cylinder to move synchronously, thus completing the position feedback of the main hydraulic cylinder.

[0009] The beneficial effects of this utility model are: through the precise cooperation of disc one, disc two and disc three, the rotational torque of the main hydraulic cylinder piston rod is eliminated, preventing damage to the piston rod of the external sensor cylinder due to force. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] In the diagram: 1. Main hydraulic cylinder; 2. External sensor cylinder; 3. Displacement sensor; 4. Large package turntable lifting arm; 5. Disc 1; 6. Spherical joint bearing; 7. Disc 2; 8. Main hydraulic cylinder piston rod; 9. External displacement sensor cylinder piston rod; 10. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and examples.

[0013] See attached document Figure 1 An anti-torsion position sensor external cylinder device includes a main hydraulic cylinder 1, a main hydraulic cylinder piston rod 9, and a large turntable lifting arm 4 connected to the main hydraulic cylinder piston rod 9 via a spherical plain bearing 6. The device also includes a displacement sensor external cylinder 2, a displacement sensor 3, a disc 1 5, a disc 2 7, a disc 3 8, and a displacement sensor external cylinder piston rod 10. The displacement sensor 3 is fixed to the cylinder body end of the displacement sensor external cylinder 2. The disc 1 5 is fixed to the main hydraulic cylinder piston rod 9. The disc 2 7 and the disc 3 8 are respectively fixed to the displacement sensor external cylinder piston rod 10. The disc 1 5 is engaged in the gap between the disc 2 7 and the disc 3 8.

[0014] In this example, refer to the appendix. Figure 1 During continuous casting production, a ladle turntable is needed to transfer molten steel from the receiving bay to the continuous casting bay. Before rotating, the ladle turntable needs to raise its lifting arm to its highest position. Then, the turntable rotates, and when the lifting arm accurately stops at the receiving position, it lowers to its lowest point, ready to receive the steel. After receiving the steel, the lifting arm rises to its highest position, and then the turntable rotates again to transfer the full ladle of molten steel to the continuous casting bay. When the lifting arm accurately stops at the pouring position, it lowers, ready to begin pouring.

[0015] Disc 5 can move linearly and rotate synchronously with the piston rod 9 of the main hydraulic cylinder. Discs 7 and 8 can move linearly and rotate synchronously with the piston rod 10 of the external position sensor cylinder. The gap between discs 7 and 8 matches the thickness of disc 5, and disc 5 is fitted into the gap between discs 7 and 8.

[0016] During the repeated lifting and lowering of the lifting arm 4 of the large package turntable, the piston rod 9 of the main hydraulic cylinder rotates. Since disc 5 is fixed on the piston rod 9, disc 5 rotates within the gap between disc 7 and disc 8. Simultaneously, disc 5 drives disc 7 and disc 8 to rise and fall with the piston rod 9. Disc 7 and disc 8 drive the piston rod 10 of the external sensor cylinder to move synchronously, completing the position feedback of the main hydraulic cylinder. Through the close cooperation of disc 5, disc 7, and disc 8, the torsional torque generated by the rotation of the piston rod 9 of the main hydraulic cylinder can be perfectly eliminated, preventing the external cylinder piston rod 10 from bending and being damaged by the rotational torque of the piston rod 9 of the main hydraulic cylinder.

Claims

1. An anti-torsion position sensor external cylinder device, comprising a main hydraulic cylinder (1), a main hydraulic cylinder piston rod (9), and a large-package turntable lifting arm (4) connected to the main hydraulic cylinder piston rod (9) via a spherical plain bearing (6), characterized in that: The composition also includes an external displacement sensor cylinder (2), a displacement sensor (3), a first disk (5), a second disk (7), a third disk (8), and a piston rod (10) of the external displacement sensor cylinder. The displacement sensor (3) is fixed to the cylinder body end of the external displacement sensor cylinder (2), the first disk (5) is fixed to the piston rod (9) of the main hydraulic cylinder, the second disk (7) and the third disk (8) are respectively fixed to the piston rod (10) of the external displacement sensor cylinder, and the first disk (5) is stuck in the gap between the second disk (7) and the third disk (8).

2. The anti-torsion position sensor external cylinder device according to claim 1, characterized in that: The gap between disk two (7) and disk three (8) matches the thickness of disk one (5).

3. The anti-torsion position sensor external cylinder device according to claim 1 or 2, characterized in that: The main hydraulic cylinder (1) and the displacement sensor external cylinder (2) are arranged in parallel.

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