Hydraulic system applied to large iron cutting machine
By using components such as dual pump system and electromagnetic reversing valve in the hydraulic system of the iron cutting machine, the problem of unstable pressure in the hydraulic system is solved, and the efficiency of equipment usage and pressure stability are improved.
Patent Information
- Application Number
- CN202421778444.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When the existing hydraulic system of iron cutting machine is used to deal with large workpieces, the pressure is unstable, resulting in excessive power of the power motor, resulting in high production noise, large power consumption and low equipment usage efficiency.
A dual pump system is adopted, and the pressure stability and flow setting of the hydraulic system are achieved through the first oil pump and the second oil pump as the pressure source of the hydraulic system, and through components such as electromagnetic reversing valves and energy accumulators.
The pressure stability of the hydraulic system is improved, so that the equipment use efficiency of large iron cutting machines is greatly improved under the same power consumption.
Smart Images
Figure CN222782824U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of mechanical hydraulic systems and relates to a hydraulic system used in a large iron cutting machine, comprising an oil tank, an air filter, a liquid level gauge, an oil suction filter, a motor, a first oil pump, a relief valve, a check valve, an accumulator, an electromagnetic reversing valve and an oil cylinder. Background Art
[0002] At present, the existing iron cutting machine equipment generally adopts mechanical cutting method in practical application. When the cutting object is a larger workpiece, the pressure instability of the hydraulic system will cause the required power motor to be too large. The existence of this situation will not only lead to high production noise and high power consumption, but also lead to low equipment utilization efficiency, thereby increasing production costs. Summary of the invention
[0003] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a hydraulic system with high pressure stability for use in large iron cutting machines. The large iron cutting machines using the hydraulic system have greatly improved equipment utilization efficiency under the condition of the same power consumption.
[0004] In order to solve the above technical problems, the hydraulic system of the utility model includes an oil tank, an air filter, a liquid level gauge, an oil suction filter, a motor, a first oil pump, a relief valve, a one-way valve, an accumulator, an electromagnetic reversing valve, and an oil cylinder. The oil tank is equipped with an air filter, the oil tank is equipped with a liquid level gauge, the oil tank is connected to the first oil pump through an oil circuit 1, and the oil circuit 1 is equipped with an oil suction filter.
[0005] As an improvement of the utility model, the hydraulic system also includes a second oil pump, the motor is connected to and drives the operation of the first oil pump and / or the second oil pump, the second oil pump is connected to the first oil port of the electromagnetic reversing valve through oil circuit 2, the second oil port of the electromagnetic reversing valve is connected to the oil port 1 of the oil cylinder through oil circuit 3, the oil port 2 of the oil cylinder is connected to the third oil port of the electromagnetic reversing valve through oil circuit 4, the fourth oil port of the electromagnetic reversing valve is connected to the oil tank through oil circuit 5, and oil circuit 3 and oil circuit 5 are connected through oil circuit 6 equipped with a unloading valve.
[0006] The motor controls the operation of the first oil pump and / or the second oil pump to suck the hydraulic oil into the circuit, and the hydraulic system starts to work. Since the utility model uses the first oil pump and the second oil pump as a double pump to provide pressure and flow settings for the hydraulic system, the pressure stability of the hydraulic system is greatly improved.
[0007] Furthermore, the first oil pump is connected to the oil circuit 2 through the oil circuit 7, the accumulator is connected to one end of the oil circuit 8, the other end of the oil circuit 8 is respectively connected to the oil port 1 of the first logic valve and the oil port 1 of the second logic valve, the second logic valve is equipped with a pressure relief valve, and the oil circuit 2 is connected to the oil circuit 8 through the oil circuit 9.
[0008] The accumulator can achieve the purpose of promoting the rapid movement of the oil cylinder through the control of the electromagnetic reversing valve, so that the hydraulic system can run smoothly.
[0009] Furthermore, the oil port 2 of the first logic valve is connected to the oil circuit 2 through the oil circuit 10, the oil port 2 of the second logic valve is connected to the oil circuit 5 through the oil circuit 11, and the pressure relief valve is connected to the oil circuit 11 through the oil circuit 12. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0011] Figure 1 It is a schematic diagram of the interconnected structure between various components in the utility model.
[0012] In the figure: 1-oil tank, 2-air filter, 3-heater, 4-temperature sensor, 5-liquid level gauge, 6-oil suction filter, 7-motor, 81-first oil pump, 82-second oil pump, 91-first overflow valve, 92-second overflow valve, 111-first one-way valve, 112-second one-way valve, 113-third one-way valve, 114-fourth one-way valve, 131-first logic valve, 132-second logic valve, 15-pressure relief valve, 17-on-off valve, 19-accumulator, 20-solenoid reversing valve, 21-unloading valve, 22-oil cylinder. DETAILED DESCRIPTION
[0013] Figure 1 It shows that the hydraulic system of the utility model includes an oil tank 1, an air filter 2, a liquid level gauge 5, an oil suction filter 6, a motor 7, a first oil pump 81, a relief valve, a one-way valve, an accumulator 19, an electromagnetic reversing valve 20, and an oil cylinder 22. The oil tank 1 is equipped with an air filter 2, the oil tank 1 is equipped with a liquid level gauge 5, the oil tank 1 is connected to the first oil pump 81 through an oil circuit 1, and the oil circuit 1 is equipped with an oil suction filter 6.
[0014] As an improvement of the utility model, the hydraulic system also includes a second oil pump 82, the motor 7 is connected to and drives the operation of the first oil pump 81 and / or the second oil pump 82, the second oil pump 82 is connected to the first oil port of the electromagnetic reversing valve 20 through the oil circuit 2, the second oil port of the electromagnetic reversing valve 20 is connected to the oil port 1 of the cylinder 22 through the oil circuit 3, the oil port 2 of the cylinder 22 is connected to the third oil port of the electromagnetic reversing valve 20 through the oil circuit 4, the fourth oil port of the electromagnetic reversing valve 20 is connected to the oil tank 1 through the oil circuit 5, and the oil circuit 3 and the oil circuit 5 are connected through the oil circuit 6 equipped with the unloading valve 21.
[0015] After the electromagnetic reversing valve 20 is energized, the purpose of controlling the movement direction of the oil cylinder 22 can be achieved. The unloading valve 21 can achieve the purpose of promoting the rapid movement of the oil cylinder 22 through the control of the electromagnetic reversing valve 20.
[0016] The fuel tank 1 is also equipped with a heater 3 and a temperature sensor 4 .
[0017] Among them, the oil circuit 2 is installed with a first one-way valve 111.
[0018] Furthermore, the first oil pump 81 is connected to the oil circuit 2 through the oil circuit 7, the accumulator 19 is connected to one end of the oil circuit 8, and the other end of the oil circuit 8 is respectively connected to the oil port 1 of the first logic valve 131 and the oil port 1 of the second logic valve 132. The second logic valve 132 is equipped with a pressure relief valve 15, and the oil circuit 2 is connected to the oil circuit 8 through the oil circuit 9.
[0019] The accumulator 19 can provide rapid oil replenishment for the hydraulic system, and the hydraulic circuit has a pressure-maintaining function after the motor 7 stops.
[0020] Among them, the oil circuit seven is installed with a second one-way valve 112, the oil circuit eight is installed with a fourth one-way valve 114, and the oil circuit nine is installed with a third one-way valve 113 and an on-off valve 17.
[0021] Furthermore, the oil port 2 of the first logic valve 131 is connected to the oil circuit 2 through the oil circuit 10, the oil port 2 of the second logic valve 132 is connected to the oil circuit 5 through the oil circuit 11, and the pressure relief valve 15 is connected to the oil circuit 11 through the oil circuit 12.
[0022] Among them, oil circuit 7 is connected with oil circuit 5 through oil circuit 13, and oil circuit 13 is equipped with a second overflow valve 92. Oil circuit 13 is connected with oil circuit 2 through oil circuit 14, and oil circuit 14 is equipped with a first overflow valve 91.
[0023] The first relief valve 91 and the second relief valve 92 are used to limit the maximum pressure of the hydraulic system so as to protect the hydraulic system.
[0024] The second oil pump 82 is connected to the oil tank 1 through the oil passage 15.
[0025] The main technical parameters of the hydraulic system described in this embodiment are as follows:
[0026] Motor power: 45KW-4P; displacement of the first oil pump and the second oil pump: T6ED; oil tank capacity: 1600L; motor voltage level: 380V / 50HZ; solenoid reversing valve voltage level: DC24V.
Claims
1. A hydraulic system for a large iron cutting machine, comprising an oil tank (1), an air filter (2), a liquid level gauge (5), an oil suction filter (6), a motor (7), a first oil pump (81), a relief valve, a one-way valve, an accumulator (19), an electromagnetic reversing valve (20), and an oil cylinder (22), wherein the oil tank (1) is provided with an air filter (2), the oil tank (1) is provided with a liquid level gauge (5), the oil tank (1) is connected to the first oil pump (81) through an oil circuit 1, and the oil circuit 1 is provided with an oil suction filter (6), characterized in that: The invention also comprises a second oil pump (82). The motor (7) is connected to and drives the operation of the first oil pump (81) and / or the second oil pump (82). The second oil pump (82) is connected to the first oil port of the electromagnetic reversing valve (20) through the second oil circuit. The second oil port of the electromagnetic reversing valve (20) is connected to the first oil port of the oil cylinder (22) through the third oil circuit. The second oil port of the oil cylinder (22) is connected to the third oil port of the electromagnetic reversing valve (20) through the fourth oil circuit. The fourth oil port of the electromagnetic reversing valve (20) is connected to the oil tank (1) through the fifth oil circuit. The third oil circuit and the fifth oil circuit are connected through the sixth oil circuit equipped with the unloading valve (21).
2. The hydraulic system for large iron cutting machine according to claim 1, characterized in that: The first oil pump (81) is connected to the oil circuit 2 through the oil circuit 7. The accumulator (19) is connected to one end of the oil circuit 8. The other end of the oil circuit 8 is respectively connected to the oil port 1 of the first logic valve (131) and the oil port 1 of the second logic valve (132). The second logic valve (132) is equipped with a pressure relief valve (15). The oil circuit 2 is connected to the oil circuit 8 through the oil circuit 9.
3. The hydraulic system for large-scale iron cutting machine according to claim 2, characterized in that: The oil circuit 7 is provided with a second one-way valve (112), the oil circuit 8 is provided with a fourth one-way valve (114), and the oil circuit 9 is provided with a third one-way valve (113) and an on-off valve (17).
4. The hydraulic system for large-scale iron cutting machine according to claim 2, characterized in that: The oil port 2 of the first logic valve (131) is connected to the oil circuit 2 via the oil circuit 10, the oil port 2 of the second logic valve (132) is connected to the oil circuit 5 via the oil circuit 11, and the pressure relief valve (15) is connected to the oil circuit 11 via the oil circuit 12.
5. The hydraulic system for large-scale iron cutting machine according to claim 2, characterized in that: The oil circuit 7 is connected to the oil circuit 5 through the oil circuit 13, and the oil circuit 13 is provided with a second overflow valve (92).
6. The hydraulic system for large-scale iron cutting machine according to claim 5, characterized in that: The oil circuit 13 is connected to the oil circuit 2 via the oil circuit 14, and the oil circuit 14 is provided with a first overflow valve (91).
7. The hydraulic system for large-scale iron cutting machine according to claim 1, characterized in that: The oil tank (1) is also equipped with a heater (3) and a temperature sensor (4).
8. The hydraulic system for large-scale iron cutting machine according to any one of claims 1 to 7, characterized in that: The oil circuit 2 is provided with a first non-return valve (111), and the second oil pump (82) is connected to the oil tank (1) through the oil circuit 15.