Hydraulic control system suitable for lifting of ladle arm of continuous casting machine
By designing a hydraulic control system that includes an actuator cylinder, a two-position three-way solenoid valve, and a check valve, the high failure rate and oil leakage problems of the boom lifting control system of the continuous casting machine were solved, achieving the effect of low failure rate and less oil leakage.
Patent Information
- Application Number
- CN202520025288.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-06
AI Technical Summary
The existing continuous casting machine boom lifting control system has a high failure rate and serious oil leakage problems.
The system employs a hydraulic control system consisting of an actuator cylinder, multiple two-position three-way solenoid valves, cartridge valves, and check valves. The lifting and lowering of the actuator cylinder is achieved by controlling the energization state of the solenoid valves, and the hydraulic shock and oil leakage are reduced by combining check valves and shut-off valves.
It achieves the advantages of low hydraulic shock, low failure rate and low oil leakage, thus improving the reliability and stability of the system.
Smart Images
Figure CN223825341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a continuous casting production control system, specifically a hydraulic control system suitable for the lifting and lowering of the ladle arm of a continuous casting machine. Background Technology
[0002] The continuous casting machine's ladle turret has two turret arms, A and B, positioned 180 degrees apart, each capable of independent lifting and lowering. While the empty ladle rotates from the casting position to the waiting position, the turret rotates the loaded ladle from the load position to the casting position, handling the receiving of molten steel from the LF furnace and supplying it to the tundish. To reduce the impact of lowering the loaded ladle to the ladle, when the loaded ladle is lifted by the gantry crane and lowered to a certain distance on the waiting ladle arm, the ladle operator signals the crane operator to stop the descent and operates the ladle arm lifting handheld button to raise the ladle arm to a certain height to catch the loaded ladle containing molten steel. Only after the loaded ladle is seated on the ladle arm can the gantry crane hook be removed. Currently, due to the advantages of hydraulic transmission, such as high output torque, ability to handle large tonnage loads, smooth transmission, no impact, and convenient adjustment and control, the lifting and lowering of the ladle arm on the ladle turret is almost always driven by hydraulic cylinders.
[0003] The existing control methods for lifting the ladle arm on the ladle turret have problems such as high failure rate and oil leakage. This paper proposes a hydraulic control system suitable for lifting the ladle arm of a continuous casting machine to solve the above technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a hydraulic control system suitable for lifting and lowering the boom of a continuous casting machine, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A hydraulic control system for lifting the boom of a continuous casting machine includes: an actuator cylinder, a first two-position three-way solenoid valve, a second two-position three-way solenoid valve, a third two-position three-way solenoid valve, a fourth two-position three-way solenoid valve, a first cartridge valve, a second cartridge valve, a third cartridge valve, and a fourth cartridge valve. The oil port of the rodless chamber of the actuator cylinder is connected to a first oil supply pipe; the oil port of the rod chamber of the actuator cylinder is connected to a second oil supply pipe; a third oil supply pipe is also connected to the first oil supply pipe, and a pressure limiting valve is installed on the third oil supply pipe. The control port of the cartridge valve is connected to port A of the first two-position three-way solenoid valve. Port A of the first cartridge valve is connected to the fifth oil supply line, and port B of the first cartridge valve is connected to the sixth oil supply line. The control port of the second cartridge valve is connected to port A of the second two-position three-way solenoid valve. Port A of the second cartridge valve is connected to the fifth oil supply line, and port B of the second cartridge valve is connected to the third oil supply line. The control port of the third cartridge valve is connected to port A of the third two-position three-way solenoid valve. On the four oil supply lines, the B port of the third cartridge valve is connected to the sixth oil supply line; the control port of the fourth cartridge valve is connected to the A port of the fourth two-position three-way solenoid valve; the A port of the fourth cartridge valve is connected to the fourth oil supply line, and the B port of the fourth cartridge valve is connected to the third oil supply line; the P ports of the first two-position three-way solenoid valve, the second two-position three-way solenoid valve, the third two-position three-way solenoid valve, and the fourth two-position three-way solenoid valve are all connected to the first control oil supply line; the first two-position three-way solenoid valve, the second two-position three-way solenoid valve, the third two-position three-way solenoid valve, and the fourth two-position three-way solenoid valve are all connected to the first control oil supply line; The T-ports of both the first two-position three-way solenoid valve and the fourth two-position three-way solenoid valve are connected to the second control oil pipe; the fourth, fifth, and sixth oil supply pipes all flow unidirectionally to and are connected to the first control oil pipe; the first oil supply pipe is connected to the fourth oil supply pipe through the seventh oil supply pipe, and a two-position two-way hydraulic valve is installed on the seventh oil supply pipe, the control port of which is connected to the second oil supply pipe; the second oil supply pipe is connected to the fifth oil supply pipe; the oil supply pipe is connected to the sixth oil supply pipe, and the oil return pipe is connected to the third oil supply pipe.
[0007] As a further embodiment of this utility model: a first shut-off valve is provided at one end of the first oil supply pipe near the actuator cylinder. One end of the first shut-off valve is connected to the rodless chamber oil port of the actuator cylinder, and the other end is connected to the seventh oil supply pipe.
[0008] As a further improvement of this utility model, a fifth check valve is provided on the second control oil pipe.
[0009] As a further improvement of this utility model: a fifth shut-off valve and a fourth check valve are provided on the oil return pipe, and a hose is also provided between the fourth check valve and the fifth shut-off valve.
[0010] As a further improvement of this utility model: a third shut-off valve and a fourth shut-off valve are provided on the oil supply pipe, and a hose is also provided between the third shut-off valve and the fourth shut-off valve.
[0011] As a further embodiment of this utility model: the first control oil pipe is connected to the fourth oil supply pipe through a first check valve, and the flow direction of the first check valve is from the fourth oil supply pipe to the first control oil pipe.
[0012] As a further embodiment of this utility model: the first control oil pipe is connected to the fifth oil supply pipe through a second one-way valve, and the flow direction of the second one-way valve is from the fifth oil supply pipe to the first control oil pipe.
[0013] As a further embodiment of this utility model: the first control oil pipe is connected to the sixth oil delivery pipe through a third one-way valve, and the flow direction of the third one-way valve is from the sixth oil delivery pipe to the first control oil pipe.
[0014] As a further embodiment of this utility model: when the first two-position three-way solenoid valve, the third two-position three-way solenoid valve, and the second two-position three-way solenoid valve are de-energized, A and P are connected; when the fourth two-position three-way solenoid valve is de-energized, A and T are connected.
[0015] As a further improvement of this utility model: the first two-position three-way solenoid valve, the second two-position three-way solenoid valve, the third two-position three-way solenoid valve and the fourth two-position three-way solenoid valve are all ball valves.
[0016] Compared with the prior art, the beneficial effects of this utility model are: in use, the lifting and lowering of the hydraulic cylinder can be achieved by controlling the energization of the first two-position three-way solenoid valve, the second two-position three-way solenoid valve, the third two-position three-way solenoid valve and the fourth two-position three-way solenoid valve. This utility model has the advantages of low hydraulic shock, low failure rate and low oil leakage. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic control system for lifting the boom of a continuous casting machine, according to an embodiment of the present invention.
[0018] In the diagram: 1-Actuating cylinder, 2-First oil supply pipe, 3-Second oil supply pipe, 4-Third oil supply pipe, 5-First two-position three-way solenoid valve, 6-Second two-position three-way solenoid valve, 7-Third two-position three-way solenoid valve, 8-Fourth two-position three-way solenoid valve, 9-First cartridge valve, 10-Second cartridge valve, 11-Third cartridge valve, 12-Fourth cartridge valve, 13-First control oil pipe, 14-Fourth oil supply pipe, 15-Fifth oil supply pipe, 16-Sixth 17-Oil supply pipe, 18-Oil return pipe, 19-Second control pipe, 21-First shut-off valve, 22-Hydraulic check valve, 23-Seventh oil supply pipe, 31-Second shut-off valve, 41-Pressure relief valve, 131-First check valve, 132-Second check valve, 133-Third check valve, 171-Third shut-off valve, 172-Fourth shut-off valve, 181-Fifth shut-off valve, 182-Fourth check valve, 191-Fifth check valve. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example 1
[0021] Please see Figure 1The present invention provides a structural diagram of a hydraulic control system for lifting the boom of a continuous casting machine, according to Embodiment 1. The hydraulic control system includes: an actuator cylinder 1, a first two-position three-way solenoid valve 5, a second two-position three-way solenoid valve 6, a third two-position three-way solenoid valve 7, a fourth two-position three-way solenoid valve 8, a first cartridge valve 9, a second cartridge valve 10, a third cartridge valve 11, and a fourth cartridge valve 12. The oil port of the rodless chamber of the actuator cylinder 1 is connected to a first oil supply pipe 2; the oil port of the rod chamber of the actuator cylinder 1 is connected to a second oil supply pipe 3; a third oil supply pipe is also connected to the first oil supply pipe 2. Pipe 4, a pressure limiting valve 41 is installed on the third oil supply pipe 4, the control port of the first cartridge valve 9 is connected to port A of the first two-position three-way solenoid valve 5, port A of the first cartridge valve 9 is connected to the fifth oil supply pipe 15, port B of the first cartridge valve 9 is connected to the sixth oil supply pipe 16, the control port of the second cartridge valve 10 is connected to port A of the second two-position three-way solenoid valve 6; port A of the second cartridge valve 10 is connected to the fifth oil supply pipe 15, port B of the second cartridge valve 10 is connected to the third oil supply pipe 4; the control port of the third cartridge valve 11 is connected to port A of the third two-position three-way solenoid valve 7, the... The A port of the third cartridge valve 11 is connected to the fourth oil supply pipe 14, and the B port of the third cartridge valve 11 is connected to the sixth oil supply pipe 16; the control port of the fourth cartridge valve 12 is connected to the A port of the fourth two-position three-way solenoid valve 8; the A port of the fourth cartridge valve 12 is connected to the fourth oil supply pipe 14, and the B port of the fourth cartridge valve 12 is connected to the third oil supply pipe 4; the P ports of the first two-position three-way solenoid valve 5, the second two-position three-way solenoid valve 6, the third two-position three-way solenoid valve 7, and the fourth two-position three-way solenoid valve 8 are all connected to the first control oil supply pipe 13; the first two-position three-way solenoid valve 5, the second two-position three-way solenoid valve 6... The T-ports of the third two-position three-way solenoid valve 7 and the fourth two-position three-way solenoid valve 8 are both connected to the second control oil pipe 19; the fourth oil supply pipe 14, the fifth oil supply pipe 15, and the sixth oil supply pipe 16 all flow unidirectionally to the first control oil pipe 13 and are connected to it; the first oil supply pipe 2 is connected to the fourth oil supply pipe 14 through the seventh oil supply pipe 23, and a hydraulic control check valve 22 is installed on the seventh oil supply pipe 23. The control port of the hydraulic control check valve 22 is connected to the second oil supply pipe 3; the second oil supply pipe 3 is connected to the fifth oil supply pipe 15; the oil supply pipe 17 is connected to the sixth oil supply pipe 16, and the oil return pipe 18 is connected to the third oil supply pipe 4.
[0022] In use, this utility model can control the energization of the first two-position three-way solenoid valve 5, the second two-position three-way solenoid valve 6, the third two-position three-way solenoid valve 7, and the fourth two-position three-way solenoid valve 8 to realize the lifting and lowering of the hydraulic cylinder 1. When the third two-position three-way solenoid valve 7 is energized, the hydraulic cylinder 1 retracts; when the first two-position three-way solenoid valve 5, the second two-position three-way solenoid valve 6, and the fourth two-position three-way solenoid valve 8 are energized, the hydraulic cylinder 1 extends. This utility model has the advantages of low failure rate and low oil leakage.
[0023] In some embodiments, a first shut-off valve 21 is provided at one end of the first oil supply pipe 2 near the actuator cylinder 1. One end of the first shut-off valve 21 is connected to the rodless chamber oil port of the actuator cylinder 1, and the other end of the valve is connected to the seventh oil supply pipe 23.
[0024] In some embodiments, a fifth check valve 191 is provided on the second control oil pipe 19 to prevent control oil backflow.
[0025] In some embodiments, a fifth shut-off valve 181 and a fourth check valve 182 are provided on the return oil pipe 18, and a hose is also provided between the fourth check valve 182 and the fifth shut-off valve 181. The hose reduces vibration transmission and protects the system.
[0026] In some embodiments, a third shut-off valve 171 and a fourth shut-off valve 172 are provided on the oil supply pipe 17, and a hose is also provided between the third shut-off valve 171 and the fourth shut-off valve 172. The hose reduces vibration transmission and protects the system.
[0027] In some embodiments, the first control oil pipe 13 is connected to the fourth oil supply pipe 14 via a first check valve 131, and the flow direction of the first check valve 131 is from the fourth oil supply pipe 14 to the first control oil pipe 13.
[0028] In some embodiments, the first control oil pipe 13 is connected to the fifth oil supply pipe 15 via a second check valve 132, and the flow direction of the second check valve 132 is from the fifth oil supply pipe 15 to the first control oil pipe 13.
[0029] In some embodiments, the first control oil pipe 13 is connected to the sixth oil supply pipe 16 via a third check valve 133, wherein the flow direction of the third check valve 133 is from the sixth oil supply pipe 16 to the first control oil pipe 13.
[0030] In some embodiments, when the first two-position three-way solenoid valve 5, the third two-position three-way solenoid valve 7, and the fourth two-position three-way solenoid valve 8 are de-energized, A and P are connected; when the second two-position three-way solenoid valve 6 is de-energized, A and T are connected. The first two-position three-way solenoid valve 5, the second two-position three-way solenoid valve 6, the third two-position three-way solenoid valve 7, and the fourth two-position three-way solenoid valve 8 are all ball valves. The hydraulically controlled check valve 22 is also a ball valve.
[0031] In some embodiments, the first cartridge valve 9 and the third cartridge valve 11 control oil pressure is adjustable. The second cartridge valve 10 and the fourth cartridge valve 12 control oil pressure is fixed.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A hydraulic control system suitable for lifting the boom of a continuous casting machine, characterized in that, include: The actuator includes a hydraulic cylinder (1), a first two-position three-way solenoid valve (5), a second two-position three-way solenoid valve (6), a third two-position three-way solenoid valve (7), a fourth two-position three-way solenoid valve (8), a first cartridge valve (9), a second cartridge valve (10), a third cartridge valve (11), and a fourth cartridge valve (12). The oil port of the rodless chamber of the actuator (1) is connected to the first oil supply pipe (2); the oil port of the rod chamber of the actuator (1) is connected to the second oil supply pipe (3); a third oil supply pipe (4) is also connected to the first oil supply pipe (2), and a pressure limiting valve (41) is installed on the third oil supply pipe (4). The control port of the first cartridge valve (9) is connected to the first two-position three-way solenoid valve. At port A of valve (5), port A of the first cartridge valve (9) is connected to the fifth oil supply pipe (15), port B of the first cartridge valve (9) is connected to the sixth oil supply pipe (16), and the control port of the second cartridge valve (10) is connected to port A of the second two-position three-way solenoid valve (6); port A of the second cartridge valve (10) is connected to the fifth oil supply pipe (15), and port B of the second cartridge valve (10) is connected to the third oil supply pipe (4); the control port of the third cartridge valve (11) is connected to port A of the third two-position three-way solenoid valve (7), and port A of the third cartridge valve (11) is connected to the fourth oil supply pipe (14). Port B is connected to the sixth oil supply pipe (16); the control port of the fourth cartridge valve (12) is connected to port A of the fourth two-position three-way solenoid valve (8); port A of the fourth cartridge valve (12) is connected to the fourth oil supply pipe (14), and port B of the fourth cartridge valve (12) is connected to the third oil supply pipe (4); ports P of the first two-position three-way solenoid valve (5), the second two-position three-way solenoid valve (6), the third two-position three-way solenoid valve (7), and the fourth two-position three-way solenoid valve (8) are all connected to the first control oil pipe (13); ports P of the first two-position three-way solenoid valve (5), the second two-position three-way solenoid valve (6), the third two-position three-way solenoid valve (7), and the fourth two-position three-way solenoid valve (8) are all connected to the first control oil pipe (13); The T-ports of valve (8) are all connected to the second control oil pipe (19); the fourth oil pipe (14), the fifth oil pipe (15), and the sixth oil pipe (16) all flow unidirectionally to the first control oil pipe (13) and are connected to it; the first oil pipe (2) is connected to the fourth oil pipe (14) through the seventh oil pipe (23), and a two-position two-way hydraulic valve (22) is installed on the seventh oil pipe (23). The control port of the two-position two-way hydraulic valve (22) is connected to the second oil pipe (3); the second oil pipe (3) is connected to the fifth oil pipe (15); the oil supply pipe (17) is connected to the sixth oil pipe (16), and the oil return pipe (18) is connected to the third oil pipe (4).
2. The hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, The first oil supply pipe (2) is provided with a first shut-off valve (21) at one end near the actuator cylinder (1). One end of the first shut-off valve (21) is connected to the rodless chamber oil port of the actuator cylinder (1), and the other end of (21) is connected to the seventh oil supply pipe (23).
3. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, A fifth check valve (191) is installed on the second control oil pipe (19).
4. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, The return oil pipe (18) is equipped with a fifth shut-off valve (181) and a fourth check valve (182), and a hose is also provided between the fourth check valve (182) and the fifth shut-off valve (181).
5. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 4, characterized in that, The oil supply pipe (17) is equipped with a third shut-off valve (171) and a fourth shut-off valve (172), and a hose is also provided between the third shut-off valve (171) and the fourth shut-off valve (172).
6. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, The first control oil pipe (13) is connected to the fourth oil supply pipe (14) through the first check valve (131), and the flow direction of the first check valve (131) is from the fourth oil supply pipe (14) to the first control oil pipe (13).
7. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, The first control oil pipe (13) is connected to the fifth oil supply pipe (15) through the second check valve (132), and the flow direction of the second check valve (132) is from the fifth oil supply pipe (15) to the first control oil pipe (13).
8. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, The first control oil pipe (13) is connected to the sixth oil supply pipe (16) through the third check valve (133), and the flow direction of the third check valve (133) is from the sixth oil supply pipe (16) to the first control oil pipe (13).
9. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 1, characterized in that, When the first two-position three-way solenoid valve (5), the third two-position three-way solenoid valve (7) and the fourth two-position three-way solenoid valve (8) are de-energized, A and P are connected. When the second two-position three-way solenoid valve (6) is de-energized, A and T are connected.
10. A hydraulic control system for lifting the boom of a continuous casting machine according to claim 9, characterized in that, The first two-position three-way solenoid valve (5), the second two-position three-way solenoid valve (6), the third two-position three-way solenoid valve (7), and the fourth two-position three-way solenoid valve (8) are all ball valves.