Double-acting clamping cylinder of slab continuous casting machine crystallizer
By designing a double-acting clamping cylinder in the slab continuous casting machine crystallizer, the problems of insufficient clamping force and imbalance are solved by using the cooperation of the piston rod and the disc spring, and the stable clamping of the crystallizer and the improvement of the casting quality are achieved.
Patent Information
- Application Number
- CN202421111438.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The crystallizer of the large section, large thickness single-flow straight arc-shaped wide-thick slab continuous casting machine has insufficient clamping force and is unbalanced, resulting in the crystallizer running cone and vibration being out of synchronization, resulting in the angle cracks and longitudinal cracks of the casting billet, affecting the quality of the billet.
A double-acting clamping cylinder of slab continuous casting machine crystallizer is designed to achieve clamping and loosening functions through the movement of the piston rod, and combine the disc spring and hydraulic system to ensure balance and stability of the clamping force.
The stable clamping of the crystallizer is achieved, avoiding the problem of running cone and vibration out of synchronization, and improving the quality of the casting billet and the stability of production.
Smart Images
Figure CN222660070U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a double-acting clamping cylinder for a crystallizer of a slab continuous casting machine, belonging to the technical field of slab continuous casting machines in the metallurgical industry. Background Art
[0002] The single-stream straight arc wide and thick slab continuous casting machine with large cross-section and large thickness produces slabs with cross-sections of (200, 250, 300, 330) mm × (1300-2500) mm. The ingot guide system of the casting machine adopts top-mounted ingot guide, and the strand guide fan-shaped section adopts a dense arrangement of segmented rollers and fine rollers. The annual production capacity of a single line reaches 1.3 million tons. The crystallizer clamping of the slab continuous casting machine consists of four clamping cylinders. When adjusting the width, the clamping cylinder is opened by hydraulic pressure, and clamped by disc springs after the width adjustment is completed. In the continuous casting production process, due to insufficient clamping force and unbalanced clamping force, the crystallizer runs out of cone, vibrates asynchronously, and the slag skin rises, resulting in angular cracks and longitudinal cracks in the casting, which seriously affects the quality of the steel billet. Utility Model Content
[0003] The purpose of the utility model is to provide a double-acting clamping cylinder for the crystallizer of a slab continuous casting machine, which realizes the clamping and loosening functions of the crystallizer through the movement of the piston rod, has a good clamping effect, can avoid crystallizer cone running and asynchronous vibration caused by unbalanced clamping force, and solves the problems existing in the background technology.
[0004] The technical solution of the utility model is:
[0005] A double-acting clamping cylinder for a crystallizer of a slab continuous casting machine comprises a flange, a piston rod, a cylinder body, a disc spring, an adjusting gasket, a piston, a piston rod sleeve seal, flange bolts, a rod cavity oil filling port and a rodless cavity oil filling port. The flange is fixed to the cylinder body by means of flange bolts, the disc spring is arranged in the rod cavity of the cylinder body, adjusting gaskets are respectively arranged at both ends of the disc spring, piston rod sleeve seals are respectively arranged at both ends of the piston rod, and the flange is provided with a rod cavity oil filling port and a rodless cavity oil filling port.
[0006] The rod chamber refueling port on the flange is communicated with the rod chamber of the cylinder body, and the rodless chamber refueling port on the flange is communicated with the rodless chamber of the cylinder body.
[0007] The rod chamber refueling port and the rodless chamber refueling port on the flange are arranged opposite to each other.
[0008] The adjusting washers at both ends of the disc spring are respectively sleeved on the piston rod.
[0009] The rod cavity and the rodless cavity of the cylinder body are respectively provided with vent holes, the rod cavity vent hole of the cylinder body is provided with a rod cavity vent screw, and the rodless cavity vent hole of the cylinder body is provided with a rodless cavity vent screw.
[0010] The beneficial effects of the utility model are as follows: in a normal state, the crystallizer is clamped by a disc spring, and the disc spring is guaranteed to produce a maximum clamping force by adjusting the thickness of the gasket in the cylinder body; when the crystallizer is out of sync, clamping is achieved by hydraulic pressure, and the structure is simple, the operation is convenient, and the clamping effect is stable. At the same time, by adjusting the thickness of the gasket, it can easily adapt to different work requirements, thereby improving applicability and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is the front view of the utility model;
[0012] Figure 2 It is a side view of the utility model;
[0013] In the figure: flange 1, piston rod 2, cylinder body 3, disc spring 4, adjusting gasket 5, piston 6, piston rod sleeve seal 7, rod chamber bleed screw 8, rodless chamber bleed screw 9, flange bolt 10, rod chamber refueling port 11, rodless chamber refueling port 12, installation fixing bolt hole 13. DETAILED DESCRIPTION
[0014] The present invention will be further described below by way of examples with reference to the accompanying drawings.
[0015] See attached Figure 1-2 A double-acting clamping cylinder for a crystallizer of a slab continuous casting machine comprises a flange 1, a piston rod 2, a cylinder body 3, a disc spring 4, an adjusting gasket 5, a piston 6, a piston rod sleeve seal 7, a flange bolt 10, a rod chamber oil filling port 11 and a rodless chamber oil filling port 12. The flange 1 is fixed to the cylinder body 3 by a cylinder head bolt 10, the disc spring 4 is arranged in the rod chamber of the cylinder body 3, and adjusting gaskets 5 are respectively provided at both ends of the disc spring 4, and piston rod sleeve seals 7 are respectively provided at both ends of the piston rod 2. The flange 1 is provided with a rod chamber oil filling port 11 and a rodless chamber oil filling port 12.
[0016] In this embodiment, refer to the attached Figure 1-2 The double-acting clamping cylinder comprises a flange 1, a piston rod 2, a cylinder body 3, a disc spring 4, an adjusting gasket 5, a piston 6, a piston rod sleeve seal 7, a rod chamber bleed screw 8, a rodless chamber bleed screw 9, a flange bolt 10, a rod chamber refueling port 11 and a rodless chamber refueling port 12, wherein:
[0017] Flange 1 is used to connect and fix the clamping cylinder to ensure its stability during operation;
[0018] The piston rod 2 reciprocates in the cylinder body, and the clamping and loosening functions of the crystallizer are realized through its movement;
[0019] The cylinder body 3 serves as the main structure, accommodating the piston rod and providing it with movement space;
[0020] The disc spring 4 is arranged inside the cylinder body, and the reciprocating motion of the piston rod 2 is realized by its elastic force;
[0021] The adjusting gaskets 5 are respectively arranged on both sides of the disc spring 4, and are used to adjust the preload force of the disc spring 4 to adapt to different working requirements;
[0022] The piston rod seals 7 are respectively arranged at both ends of the piston rod 2 to seal the piston rod 2 to prevent oil leakage;
[0023] The rod chamber bleed screw 11 and the rodless chamber bleed screw 12 are respectively installed on the cylinder body 3 to discharge the gas in the cylinder body 3 to ensure the normal operation of the clamping cylinder;
[0024] The flange bolts 10 are used to fix the flange 1 to ensure the sealing and stability of the clamping cylinder.
[0025] When in use, the copper plate of the crystallizer is clamped completely by four double-acting clamping cylinders. In normal state, it is clamped by disc springs, and the adjustment gasket in the cylinder body is adjusted to ensure that the disc springs produce the maximum clamping force; when the crystallizer is out of sync, it is clamped by hydraulic pressure. Under the premise of balanced clamping force, other factors affecting vibration asynchrony can be ignored. If the normal clamping hydraulic pressure is too large, a pressure reducing valve can be installed to adjust the pressure, thereby completely solving the problem of crystallizer vibration asynchrony. The clamping cylinder has the advantages of simple structure, easy operation, stable clamping effect, etc. It can easily adapt to different work needs and improve applicability and flexibility.
Claims
1. A double-acting clamping cylinder for a slab continuous casting machine crystallizer, characterized in that: The invention comprises a flange (1), a piston rod (2), a cylinder body (3), a disc spring (4), an adjusting gasket (5), a piston (6), a piston rod sleeve seal (7), a flange bolt (10), a rod chamber oil filling port (11) and a rodless chamber oil filling port (12), wherein the flange (1) is fixed to the cylinder body (3) by means of the flange bolt (10), the disc spring (4) is arranged in the rod chamber of the cylinder body (3), the two ends of the disc spring (4) are respectively provided with an adjusting gasket (5), the two ends of the piston rod (2) are respectively provided with a piston rod sleeve seal (7), and the flange (1) is provided with a rod chamber oil filling port (11) and a rodless chamber oil filling port (12).
2. A double-acting clamping cylinder for a slab continuous casting machine crystallizer according to claim 1, characterized in that: The rod chamber refueling port (11) on the flange (1) is in communication with the rod chamber of the cylinder body (3), and the rodless chamber refueling port (12) on the flange (1) is in communication with the rodless chamber of the cylinder body (3).
3. A double-acting clamping cylinder for a slab continuous casting machine crystallizer according to claim 2, characterized in that: The rod chamber refueling port (11) and the rodless chamber refueling port (12) on the flange (1) are arranged opposite to each other.
4. The double-acting clamping cylinder for a slab continuous casting machine crystallizer according to claim 1, characterized in that: The adjusting washers (5) at both ends of the disc spring (4) are respectively sleeved on the piston rod (2).
5. The double-acting clamping cylinder for a slab continuous casting machine crystallizer according to claim 1, characterized in that: The rod chamber and the rodless chamber of the cylinder body (3) are respectively provided with air vents, the rod chamber air vent of the cylinder body (3) is provided with a rod chamber air vent screw (8), and the rodless chamber air vent of the cylinder body (3) is provided with a rodless chamber air vent screw (9).