Energy-saving servo control hydraulic system for precise leveling equipment

Abstract

The utility model discloses an energy-saving servo control hydraulic system for precise leveling equipment. The energy-saving servo control hydraulic system comprises an oil supply module, a driving module, an oil transportation module and an oil cylinder, the oil supply module stores hydraulic oil; the driving module is connected with the oil supply module and the oil transportation module and pumps hydraulic oil of the oil supply module to the oil transportation module; the oil conveying module is connected with the oil cylinder and the oil supply module, conveys hydraulic oil to the oil cylinder, drives the oil cylinder to move and returns the hydraulic oil discharged by the oil cylinder to the oil supply module. According to the utility model, all process action requirements can be met, and high precision of pressure and flow, quick response, long-term pressure maintaining, energy conservation, noise reduction, small space requirement and the like can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to an energy-saving servo-controlled hydraulic system for precision leveling equipment. Background Art

[0002] In existing technologies, precision leveling equipment is crucial for achieving high-precision flatness on metal materials such as plates and strips. Traditional leveling equipment often utilizes mechanical or hydraulic drive systems, but these methods have limitations in terms of control accuracy, energy consumption, and response speed. With the increasing demands for product quality and production efficiency in modern industry, the development of a highly efficient and energy-saving hydraulic system has become an urgent need within the industry. Summary of the Invention

[0003] According to an embodiment of the present utility model, an energy-saving servo-controlled hydraulic system for precision leveling equipment is provided, comprising: an oil supply module, a drive module, an oil delivery module, and an oil cylinder;

[0004] The oil supply module stores hydraulic oil;

[0005] The drive module is connected to the oil supply module and the oil delivery module, and the drive module pumps the hydraulic oil from the oil supply module to the oil delivery module;

[0006] The oil transfer module is connected to the oil cylinder and the oil supply module. The oil transfer module transports hydraulic oil to the oil cylinder, drives the oil cylinder to move, and returns the hydraulic oil discharged from the oil cylinder to the oil supply module.

[0007] Furthermore, the oil supply module comprises: an oil tank, a liquid level gauge and an oil suction filter;

[0008] The oil tank stores hydraulic oil and is connected to the oil delivery module;

[0009] The liquid level gauge is installed on the fuel tank to monitor the changes in the liquid level of the fuel tank;

[0010] The oil suction filter is arranged in the oil tank and is connected to the drive module. The oil suction filter filters the hydraulic oil in the oil tank.

[0011] Furthermore, the drive module includes: a double gear pump and a servo motor;

[0012] The double gear pump is connected to the servo motor and the oil supply module;

[0013] The duplex gear pump includes a small high-pressure pump and a large low-pressure pump;

[0014] The input end of the high-pressure small pump is connected to the input end of the low-pressure large pump and is connected to the oil supply module;

[0015] The output end of the high-pressure small pump is connected to the output end of the low-pressure large pump through a one-way valve and is connected to the oil transfer module.

[0016] Furthermore, the oil delivery module includes: a solenoid reversing valve, a solenoid overflow valve and a superimposed hydraulically controlled one-way valve;

[0017] The oil inlet of the electromagnetic reversing valve is connected to the output end of the duplex gear pump, and the two working oil ports of the electromagnetic reversing valve are respectively connected to the two oil inlets of the superimposed hydraulic control one-way valve, and are respectively connected to the two ends of the oil cylinder through the two oil outlets of the superimposed hydraulic control one-way valve;

[0018] The input end of the electromagnetic overflow valve is connected to the output end of the low-pressure large pump, and the output end of the electromagnetic overflow valve is connected to the oil drain port of the electromagnetic reversing valve and is connected to the oil supply module.

[0019] Furthermore, the oil delivery module further includes: a superimposed overflow valve, the input end of the superimposed overflow valve is connected to the oil inlet of the electromagnetic reversing valve, and the output end of the superimposed overflow valve is connected to the oil drain port of the electromagnetic reversing valve.

[0020] Furthermore, the input end of the superimposed relief valve and the input end of the electromagnetic relief valve are connected to pressure gauges.

[0021] Furthermore, the output end of the high-pressure small pump and the output end of the superimposed hydraulically controlled one-way valve are both connected to pressure sensors.

[0022] The energy-saving servo-controlled hydraulic system for precision leveling equipment according to the embodiment of the utility model can realize all process action requirements, and can also achieve high precision of pressure and flow, fast response, long-term pressure maintenance, energy saving and noise reduction, small space requirements, etc.

[0023] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of a driving module of an energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the present utility model;

[0026] Figure 3 The figure is a schematic diagram of the oil delivery module of the energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0028] First, combine Figures 1-3An energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the present invention is described. The system is used for precision leveling equipment and has a wide range of application scenarios.

[0029] like Figures 1-3 As shown, the energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the present invention includes: an oil supply module, a drive module, an oil delivery module and an oil cylinder 4.

[0030] Specifically, if Figures 1-3 As shown, in this embodiment, the oil supply module stores hydraulic oil; the driving module is connected to the oil supply module and the oil transfer module, and the driving module pumps the hydraulic oil of the oil supply module to the oil transfer module; the oil transfer module is connected to the oil cylinder 4 and the oil supply module, and the oil transfer module transfers hydraulic oil to the oil cylinder 4, drives the oil cylinder 4 to move, and returns the hydraulic oil discharged from the oil cylinder 4 to the oil supply module. After driving the oil cylinder 4 to move, the hydraulic oil in the hydraulic system returns to the oil supply module for recycling, which not only saves resources but also reduces environmental pollution.

[0031] Further, if Figures 1-3 As shown, in this embodiment, the oil supply module includes: an oil tank 11, a liquid level gauge 12 and an oil suction filter 13; an oil port is provided on the oil tank 11, the oil tank 11 stores hydraulic oil, and is connected to the oil delivery module; the liquid level gauge 12 is arranged on the oil tank 11, so that the operator can monitor the liquid level changes in the oil tank 11 in real time, and promptly detect insufficient or excessive oil, so as to take corresponding measures; the oil suction filter 13 is arranged in the oil tank 11 and is connected to the drive module. The oil suction filter 13 filters the hydraulic oil in the oil tank 11 and removes impurities and particulate matter therein, which helps to protect the components in the drive module and the oil delivery module from wear and damage, and extend the service life of the system.

[0032] Specifically, if Figures 1-3 As shown, in this embodiment, the drive module includes: a double gear pump and a servo motor 21; the double gear pump is connected to the servo motor 21 and the oil supply module; the double gear pump includes a high-pressure small pump 22 and a low-pressure large pump 23. By combining the high-pressure small pump 22 and the low-pressure large pump 23, the double gear pump can provide the required hydraulic flow and pressure under different working conditions; the input end of the high-pressure small pump 22 is connected to the input end of the low-pressure large pump 23 and connected to the oil supply module; the output end of the high-pressure small pump 22 is connected to the output end of the low-pressure large pump 23 through a one-way valve and connected to the oil delivery module. The servo motor 21 can accurately control the pump speed and output flow, further improving the response speed and accuracy of the system. The servo motor 21 pump group is particularly suitable for hydraulic systems with high pressure and flow response requirements and long-term pressure maintenance, and has the advantages of fast response, energy saving and noise reduction, and low oil temperature rise.

[0033] Further, if Figures 1-3As shown, in this embodiment, the oil delivery module includes: a solenoid reversing valve 31, a solenoid overflow valve 32, and a superimposed hydraulically controlled check valve 33. The oil inlet of the solenoid reversing valve 31 is connected to the output of the double gear pump. The two working oil ports of the solenoid reversing valve 31 are respectively connected to the two oil inlets of the superimposed hydraulically controlled check valve 33, and are connected to the two ends of the oil cylinder 4 through the two oil outlets of the superimposed hydraulically controlled check valve 33. The input of the solenoid overflow valve 32 is connected to the output of the low-pressure large pump 23, and the output of the solenoid overflow valve 32 is connected to the oil drain port of the solenoid reversing valve 31 and is connected to the oil supply module. The solenoid overflow valve 32 is normally open and performs pressure regulation and unloading.

[0034] Further, if Figures 1-3 As shown, in this embodiment, the oil delivery module further includes: a superimposed relief valve 34, the input end of the superimposed relief valve 34 is connected to the oil inlet of the electromagnetic reversing valve 31, and the output end of the superimposed relief valve 34 is connected to the oil drain port of the electromagnetic reversing valve 31. The superimposed relief valve 34 performs pressure setting and stabilization. When the hydraulic pressure in the system exceeds the pressure value set by the superimposed relief valve 34, the valve will automatically open and the excess oil will flow back to the oil tank 11 through the oil drain port, thereby maintaining the stability of the system pressure.

[0035] Further, if Figures 1-3 As shown, in this embodiment, the output end of the high-pressure small pump 22 and the output end of the superimposed hydraulically controlled one-way valve 33 are both connected to a pressure sensor 35. The input end of the superimposed relief valve 34 and the input end of the electromagnetic relief valve 32 are both connected to a pressure gauge 36. The pressure sensor 35 and the pressure gauge 36 can monitor the pressure conditions of each part in real time.

[0036] like Figures 1-3As shown, the energy-saving servo-controlled hydraulic system is powered by a servo motor 21 pump unit. This servo motor 21 drives a dual gear pump to achieve the entire process of rapid forward, working forward, pressure-holding, and rapid retract of the loaded cylinder 4. When the servo motor 21 is activated, the solenoid YV1 of the solenoid reversing valve 31 is energized, along with the solenoid YV3 of the solenoid relief valve 32. This initiates the high-pressure pump 23's pressure increase, allowing both the high-pressure pump 22 and the low-pressure pump 23 to simultaneously supply oil to the cylinder 4, thus achieving maximum system flow and achieving no-load rapid forward motion. When the pressure sensor 35 at the system pump outlet detects that the system pressure reaches 6 MPa, it signals the PLC to de-energize the solenoid YV3 of the solenoid relief valve 32 (removing the load from the low-pressure pump 23), switching to the high-pressure pump 22 alone for oil supply. This transitions to the slow working forward process, with a working forward pressure of 20 MPa and maximum output from the cylinder 4. After the process is complete, the hydraulic cylinder 4 enters the pressure-holding state. During this period, the servo motor 21 and pump assembly maintain the required pressure control accuracy. After the pressure-holding is complete, the solenoid reversing valve 31 is reversed, allowing the hydraulic cylinder 4 to retract. Finally, when all processes are completed, the hydraulic components are de-energized, and the Y-shaped center-position solenoid reversing valve 31 and the superimposed hydraulically controlled check valve 33 lock the hydraulic cylinder 4 to prevent displacement. Simultaneously, the pressure sensor 35 at the end of the hydraulic cylinder 4 also monitors the locking pressure of the hydraulic cylinder 4 online.

[0037] Above, refer to Figures 1-3 The present invention describes an energy-saving servo-controlled hydraulic system for precision leveling equipment according to an embodiment of the present invention, which can meet all process action requirements and can also achieve high pressure and flow precision, fast response, long-term pressure maintenance, energy saving and noise reduction, and small space requirements.

[0038] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0039] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. An energy-saving servo-controlled hydraulic system for precision leveling equipment, characterized in that: Contains: oil supply module, drive module, oil transfer module and oil cylinder; The oil supply module stores hydraulic oil; The driving module is connected to the oil supply module and the oil delivery module, and the driving module pumps the hydraulic oil from the oil supply module to the oil delivery module; The oil delivery module is connected to the oil cylinder and the oil supply module. The oil delivery module delivers the hydraulic oil to the oil cylinder to drive the oil cylinder to move, and returns the hydraulic oil discharged from the oil cylinder to the oil supply module.

2. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 1, characterized in that: The oil supply module includes: an oil tank, a liquid level gauge and an oil suction filter; The oil tank stores hydraulic oil and is connected to the oil delivery module; The liquid level gauge is arranged on the oil tank to monitor the liquid level change of the oil tank; The oil suction filter is arranged in the oil tank and connected to the driving module. The oil suction filter filters the hydraulic oil in the oil tank.

3. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 1, characterized in that: The driving module includes: a double gear pump and a servo motor; The double gear pump is connected to the servo motor and the oil supply module; The double gear pump comprises a small high-pressure pump and a large low-pressure pump; The input end of the high-pressure small pump is connected to the input end of the low-pressure large pump and is connected to the oil supply module; The output end of the high-pressure small pump is connected to the output end of the low-pressure large pump through a one-way valve and is connected to the oil delivery module.

4. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 3, characterized in that: The oil delivery module includes: an electromagnetic reversing valve, an electromagnetic overflow valve and a superimposed hydraulically controlled one-way valve; The oil inlet of the electromagnetic reversing valve is connected to the output end of the double gear pump, and the two working oil ports of the electromagnetic reversing valve are respectively connected to the two oil inlets of the superimposed hydraulically controlled one-way valve, and are respectively connected to the two ends of the oil cylinder through the two oil outlets of the superimposed hydraulically controlled one-way valve; The input end of the electromagnetic overflow valve is connected to the output end of the low-pressure large pump, and the output end of the electromagnetic overflow valve is connected to the oil drain port of the electromagnetic reversing valve and is connected to the oil supply module.

5. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 4, characterized in that: The oil delivery module further comprises: a superimposed overflow valve, the input end of the superimposed overflow valve is connected to the oil inlet of the electromagnetic reversing valve, and the output end of the superimposed overflow valve is connected to the oil drain port of the electromagnetic reversing valve.

6. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 5, characterized in that: The input end of the superimposed relief valve and the input end of the electromagnetic relief valve are connected with pressure gauges.

7. The energy-saving servo-controlled hydraulic system for precision leveling equipment according to claim 4, characterized in that: The output end of the small high-pressure pump and the output end of the superimposed hydraulically controlled one-way valve are both connected to pressure sensors.

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