Hydraulic shear oil cylinder of continuous casting machine

Abstract

The utility model relates to the technical field of oil cylinders, in particular to a hydraulic shear oil cylinder of a continuous casting machine, which comprises a cylinder barrel, a piston is connected inside the cylinder barrel in a sliding mode, the piston divides the inside of the cylinder barrel into a rod cavity and a rodless cavity, one end of the piston is fixedly connected with a piston rod, the other end of the piston rod extends to the outside of the cylinder barrel, and the piston rod is connected with the rodless cavity. The piston rod is slidably connected with the guide sleeve, a dustproof ring can prevent fine dust from entering the cylinder barrel, a sealing gasket is arranged between the cylinder barrel and the guide sleeve, the sealing effect between the guide sleeve and the cylinder barrel is improved, the outer wall of the piston is fixedly connected with a plurality of second sealing rings and check rings, and therefore the sealing performance between the piston and the cylinder barrel is improved. The check ring is used for preventing the second sealing ring from being extruded out in a high-pressure environment, the pressure bearing capacity of the second sealing ring is improved, the cylinder barrel is of an integrated forging structure, the strength is high, the sealing performance is good, and compared with a traditional welding type split oil cylinder, welding seams of the cylinder barrel are removed, and the oil leakage risk of the oil cylinder is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a hydraulic shear cylinder for a continuous casting machine. Background Technology

[0002] The hydraulic shear cylinder of a continuous casting machine is an integral part of the machine, primarily used to control the movement of the hydraulic shears. Powered by a hydraulic system, the cylinder performs the shearing action, thus cutting the cast billet. A continuous casting machine cylinder typically consists of a hydraulic cylinder liner, piston, sealing elements, cylinder body, and oil circuit. A hydraulic cylinder is a device that operates using the pressure of a liquid. By receiving high-pressure fluid, the piston is subjected to force, resulting in displacement and thus driving the movement of related mechanical parts.

[0003] Existing hydraulic shear cylinders are typically designed as separate welded units. During use, because the cylinders are under constant pressure, frequent leaks occur at the welded parts at the bottom of the cylinder, forcing the hydraulic shears to be taken offline for maintenance. Secondly, hydraulic oil leaks pollute the continuous casting circulating water system, increasing water treatment costs. Thirdly, prolonged hydraulic oil leaks necessitate oil replenishment, increasing hydraulic oil costs. Fourthly, hydraulic oil leaks can easily cause fires if they come into contact with ignition sources. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic shear cylinder for a continuous casting machine, which has an integrated forging structure, high strength, and good sealing performance. Compared with the traditional welded split cylinder, it eliminates its own weld seams and reduces the risk of oil leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic shear cylinder for a continuous casting machine, comprising a cylinder barrel, a piston slidably connected inside the cylinder barrel, the piston dividing the interior of the cylinder barrel into a rod chamber and a rodless chamber, a piston rod fixedly connected to one end of the piston, the other end of the piston rod extending to the outside of the cylinder barrel, a guide sleeve fixedly connected to the cylinder barrel opening, and the piston rod and the guide sleeve slidably connected.

[0006] To improve the sealing between the guide sleeve and the piston rod, in a preferred embodiment of the hydraulic shear cylinder for a continuous casting machine according to this utility model, a first sealing ring and a dustproof ring are fixedly connected to the inner side wall of the guide sleeve, with the first sealing ring located on the side closer to the piston.

[0007] To reduce leakage in the hydraulic cylinder under pressure, the preferred embodiment of the hydraulic shear cylinder for a continuous casting machine according to this utility model is a one-piece forged structure.

[0008] To improve the sealing between the cylinder and the guide sleeve, a sealing gasket is preferably provided between the cylinder and the guide sleeve in a preferred embodiment of the hydraulic shear cylinder for a continuous casting machine according to this utility model.

[0009] To improve the sealing between the cylinder and the piston, in a preferred embodiment of the hydraulic shear cylinder for a continuous casting machine according to this utility model, the outer wall of the piston is fixedly connected with multiple second sealing rings and retaining rings.

[0010] To facilitate the installation of the hydraulic cylinder, in a preferred embodiment of the hydraulic shear cylinder for a continuous casting machine according to this utility model, a flange is fixedly connected to the outer wall of the cylinder barrel, and the outer wall of the flange is provided with mounting holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The inner wall of the guide sleeve is fixedly connected with a first sealing ring and a dustproof ring, which effectively improves the sealing performance between the guide sleeve and the piston rod. The dustproof ring can prevent fine dust from entering the inside of the cylinder. A sealing gasket is set between the cylinder and the guide sleeve to improve the sealing effect between the guide sleeve and the cylinder. The outer wall of the piston is fixedly connected with multiple second sealing rings and retaining rings, thereby improving the sealing performance between the piston and the cylinder. The retaining ring is used to prevent the second sealing ring from being squeezed out under high pressure and to increase the pressure bearing capacity of the second sealing ring. The cylinder is a one-piece forged structure with high strength and good sealing performance. Compared with the traditional welded split cylinder, it eliminates its own weld seams and reduces the risk of oil leakage. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0014] Figure 2 This is a diagram of the overall external structure of this utility model.

[0015] In the diagram: 1. Cylinder; 2. Guide sleeve; 3. Piston; 4. Piston rod; 5. First sealing ring; 6. Dustproof ring; 7. Sealing gasket; 8. Second sealing ring; 9. Retaining ring; 10. Flange; 11. Mounting hole. Detailed Implementation

[0016] Please see Figures 1 to 2 A hydraulic shear cylinder for a continuous casting machine includes a cylinder barrel 1, a piston 3 slidably connected inside the cylinder barrel 1, the piston 3 dividing the inside of the cylinder barrel 1 into a rod chamber and a rodless chamber, a piston rod 4 fixedly connected to one end of the piston 3, the other end of the piston rod 4 extending to the outside of the cylinder barrel 1, a guide sleeve 2 fixedly connected to the opening of the cylinder barrel 1, and the piston rod 4 and the guide sleeve 2 slidably connected.

[0017] In this embodiment: the inner wall of the guide sleeve 2 is fixedly connected with a first sealing ring 5 and a dustproof ring 6, which effectively improves the sealing performance between the guide sleeve 2 and the piston rod 4. The dustproof ring 6 can prevent fine dust from entering the interior of the cylinder 1. A sealing gasket 7 is provided between the cylinder 1 and the guide sleeve 2 to improve the sealing effect between the guide sleeve 2 and the cylinder 1. The outer wall of the piston 3 is fixedly connected with multiple second sealing rings 8 and retaining rings 9, thereby improving the sealing performance between the piston 3 and the cylinder 1. The retaining ring 9 is used to prevent the second sealing rings 8 from being squeezed out under high pressure and to increase the pressure bearing capacity of the second sealing rings 8. The cylinder 1 is an integral forged structure with high strength and good sealing performance. Compared with the traditional welded split cylinder, it eliminates its own weld seams and reduces the risk of oil leakage from the cylinder.

[0018] As a technical optimization of this utility model, the inner wall of the guide sleeve 2 is fixedly connected with a first sealing ring 5 and a dustproof ring 6, and the first sealing ring 5 is disposed on the side close to the piston 3.

[0019] In this embodiment, the inner wall of the guide sleeve 2 is fixedly connected with a first sealing ring 5 and a dustproof ring 6, which effectively improves the sealing between the guide sleeve 2 and the piston rod 4. The dustproof ring 6 can prevent fine dust from entering the interior of the cylinder 1.

[0020] As a technical optimization of this utility model, the cylinder barrel 1 is an integral forged structure.

[0021] In this embodiment, the cylinder 1 is a one-piece forged structure with high strength and good sealing performance. Compared with the traditional welded split cylinder, it eliminates its own weld seam and reduces the risk of oil leakage.

[0022] As a technical optimization of this utility model, a sealing gasket 7 is provided between the cylinder 1 and the guide sleeve 2.

[0023] In this embodiment, a sealing gasket 7 is provided between the cylinder 1 and the guide sleeve 2 to improve the sealing effect between the guide sleeve 2 and the cylinder 1.

[0024] As a technical optimization of this utility model, the outer wall of the piston 3 is fixedly connected with multiple second sealing rings 8 and retaining rings 9.

[0025] In this embodiment, multiple second sealing rings 8 and retaining rings 9 are fixedly connected to the outer wall of the piston 3, thereby improving the sealing performance between the piston 3 and the cylinder 1. The retaining rings 9 are used to prevent the second sealing rings 8 from being squeezed out under high pressure and to increase the pressure-bearing capacity of the second sealing rings 8.

[0026] As a technical optimization of this utility model, a flange 10 is fixedly connected to the outer wall of the cylinder 1, and an installation hole 11 is opened on the outer wall of the flange 10.

[0027] In this embodiment, the flange 10 and mounting hole 11 are provided to facilitate the installation of the hydraulic cylinder.

[0028] Working principle: The inner wall of the guide sleeve 2 is fixedly connected with a first sealing ring 5 and a dustproof ring 6, which effectively improves the sealing performance between the guide sleeve 2 and the piston rod 4. The dustproof ring 6 can prevent fine dust from entering the interior of the cylinder 1. A sealing gasket 7 is provided between the cylinder 1 and the guide sleeve 2 to improve the sealing effect between the guide sleeve 2 and the cylinder 1. The outer wall of the piston 3 is fixedly connected with multiple second sealing rings 8 and retaining rings 9, thereby improving the sealing performance between the piston 3 and the cylinder 1. The retaining ring 9 is used to prevent the second sealing rings 8 from being squeezed out under high pressure and to increase the pressure bearing capacity of the second sealing rings 8. The cylinder 1 is an integral forged structure with high strength and good sealing performance. Compared with the traditional welded split cylinder, it eliminates its own weld seams and reduces the risk of oil leakage.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic shear cylinder of a continuous casting machine comprising a cylinder barrel (1), characterized in that: The inside of the cylinder barrel (1) is slidably connected with a piston (3), the piston (3) divides the inside of the cylinder barrel (1) into a rod cavity and a rodless cavity, one end of the piston (3) is fixedly connected with a piston rod (4), the other end of the piston rod (4) extends to the outside of the cylinder barrel (1), the mouth of the cylinder barrel (1) is fixedly connected with a guide sleeve (2), the piston rod (4) and the guide sleeve (2) are slidably connected; The inside wall of the guide sleeve (2) is fixedly connected with a first sealing ring (5) and a dustproof ring (6), the first sealing ring (5) is arranged on the side close to the piston (3); The cylinder barrel (1) and the guide sleeve (2) are provided with a sealing gasket (7), the outer wall of the piston (3) is fixedly connected with a plurality of second sealing rings (8) and a check ring (9).

2. The hydraulic shear cylinder for a continuous casting machine according to claim 1, characterized in that: The cylinder barrel (1) is an integrated forged structure.

3. The hydraulic shear cylinder for a continuous casting machine according to claim 1, wherein: The outer wall of the cylinder barrel (1) is fixedly connected with a flange (10), the outer wall of the flange (10) is provided with a mounting hole (11).

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