Servo driving energy system device

Abstract

The utility model discloses a servo drive energy system device which comprises an energy supply main system and a plurality of energy supply branch systems, and the energy supply main system comprises an oil tank, a servo drive unit and a proportional overflow valve. The servo drive unit conducts pressure adjustment on hydraulic oil in an oil tank through a proportional overflow valve and then conveys the hydraulic oil to a plurality of energy supply branch systems. Each energy supply branch system comprises a proportional pressure reduction overflow valve, an electromagnetic reversing valve, a hydraulic control one-way valve and a servo oil cylinder, the proportional pressure reduction overflow valves conduct pressure adjustment on hydraulic oil conveyed into the energy supply branch systems, and the adjusted hydraulic oil passes through the electromagnetic reversing valves and is conveyed to the servo oil cylinders through the hydraulic control one-way valves. And the oil is transmitted to an oil inlet of the servo oil cylinder after being hydraulically controlled by the one-way valve. According to the scheme, when multiple oil ways work at the same time and a main system is in an unloading state, the oil cylinder in each oil way can still have a pressure maintaining function, and the energy-saving effect can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aerospace manufacturing technical field, concretely relates to a kind of servo drive energy system device. BACKGROUND

[0002] Servo drive system is used to provide pressure and flow for semi-physical simulation experiment equipment, the system has the characteristics of centralized oil supply, multi-channel output, adjustable dry road pressure, and all operations can be locally controlled or remotely controlled.

[0003] Referring to Figure 1 The existing servo drive system is mainly composed of a motor 8, a high-pressure pump 11, an accumulator 23, a filter 13, a proportional overflow valve 19, a proportional pressure reducing overflow valve 20, and a stop valve 22. It provides independent adjustable energy pressure for various loading devices, and each channel is equipped with a corresponding pressure measuring device. It mainly realizes the pressure maintaining function under the unloading state of the main oil pump.

[0004] However, the electromagnetic directional valve in the existing servo drive system cannot be used for pressure maintenance, and the pressure loss is relatively fast during testing, which does not meet the design requirements, resulting in the technical problem of low reliability of the servo drive system during testing.

[0005] Therefore, how to improve the reliability of the servo drive system during testing is a problem to be solved in the field. SUMMARY

[0006] To achieve the above purpose, the utility model provides a kind of servo drive energy system device, including energy providing main system and several energy providing branch systems, the energy providing main system includes oil tank, servo drive unit and proportional overflow valve, the servo drive unit transports the hydraulic oil in oil tank to several energy providing branch systems after pressure regulation by proportional overflow valve;

[0007] Its characterized in that, the several energy providing branch systems respectively include proportional pressure reducing overflow valve, electromagnetic directional valve, hydraulic control check valve and servo oil cylinder, the proportional pressure reducing overflow valve regulates the pressure of the hydraulic oil transported into the energy providing branch system, and the adjusted hydraulic oil is transmitted to the oil inlet of servo oil cylinder after electromagnetic directional valve and hydraulic control check valve.

[0008] Further, a temperature sensor for monitoring the oil temperature in the hydraulic oil tank is arranged in the oil tank.

[0009] Further, a liquid level transmitter is arranged in the oil tank to monitor the real-time liquid level in the hydraulic oil tank. If the liquid level is lower than the preset value, an alarm will be prompted.

[0010] Further, the port of the servo drive unit is provided with an oil suction filter, through which the hydraulic oil sucked by the servo drive unit is filtered for first heavy impurities.

[0011] Further, the output end of the servo drive unit is provided with a pressure filter, through which the hydraulic oil in the oil tank is filtered for second heavy impurities.

[0012] Further, the energy supply branch system is further provided with an accumulator for supplementing oil and absorbing pipeline pulsation.

[0013] Further, the servo oil cylinder is provided with a return oil port, which is connected with the oil tank through a return oil pipeline.

[0014] Further, a return oil filter for filtering return oil is provided between the return oil pipeline and the oil tank.

[0015] Further, a first safety valve is provided in the return oil pipeline and the output oil line of the energy supply main system.

[0016] Further, an electromagnetic unloading valve is provided in the return oil pipeline and the output oil line of the energy supply main system.

[0017] The servo drive system provided by the utility model improves the function type of the electromagnetic reversing valve in the testing process, increases the hydraulic control check valve with pressure maintaining function, the pressure almost has no change in the design time, and the reliability of the servo drive system in the testing process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further illustrated below in combination with the drawings and specific embodiments.

[0019] Figure 1 It is a system principle structural diagram of the existing servo drive energy system device;

[0020] Figure 2 It is a system principle structural diagram of the servo drive energy system device;

[0021] Figure 3 It is a structural schematic view of the electromagnetic reversing valve in the servo drive energy system device.

[0022] The following is the component annotation explanation in the drawings:

[0023] 100. energy supply main system 101. oil tank 102. temperature sensor 103. liquid level gauge 104. respirator 105. liquid level transmitter 106. oil suction filter 107. oil suction ball valve 108. motor 109. bell cover 110. coupling 111. gear pump 112. oil discharge ball valve 113. pressure filter 114. electromagnetic unloading valve 115. check valve 116. pressure measuring connector 117. first safety valve 118. proportional overflow valve 119. first pressure sensor 120. fourth pressure sensor 121. oil return filter

[0024] 200. energy supply branch system 201. proportional pressure reducing overflow valve 202. second pressure sensor 203. second safety valve 204. electromagnetic directional control valve 205. third pressure sensor 206. hydraulic control check valve 207. accumulator 208. stainless steel medium-high pressure ball valve 209. servo oil cylinder. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0026] The servo drive energy system device provided by the utility model, see Figure 2 , mainly comprises an energy supply main system 100 and a plurality of energy supply branch systems 200, the energy supply main system 100 provides energy for the plurality of energy supply branch systems 200, the plurality of energy supply branch systems 200 can be connected with different loading devices respectively, and the different loading devices are provided with independently adjustable energy pressure, on the basis, the corresponding pressure measuring devices are simultaneously arranged on each energy supply branch system, when the plurality of energy supply branch systems 200 provide working energy for different loading devices, the oil cylinder of the plurality of energy supply branch systems 200 is still in the pressure maintaining function under the unloading state of the energy supply main system 100, so that the device can continuously run, and under the condition that the device is continuously provided with the required pressure by pressure maintaining, the energy supply main system 100 is in the unloading state, so that the energy saving effect can be achieved.

[0027] The energy supply main system 100 is the main oil circuit of the whole oil circuit, is used for providing energy for a plurality of energy supply branch systems 200, and comprises an oil tank 101, a servo drive unit and a proportional overflow valve 118.

[0028] The oil tank 101 is used for storing hydraulic oil, and the oil tank 101 is provided with an oil discharge ball valve 112, used for discharging the oil tank 101.

[0029] Preferably, the oil tank 101 is also equipped with a temperature sensor 102 for monitoring the oil temperature in the hydraulic oil tank 101 to prevent safety hazards caused by excessively high or low oil temperature.

[0030] Preferably, the oil tank 101 is also equipped with a breather 104 to prevent damage to the oil tank caused by excessive pressure in the hydraulic oil tank 101.

[0031] Preferably, the oil tank 101 is also equipped with a liquid level transmitter 105 to monitor the real-time liquid level in the hydraulic oil tank 101, and if the liquid level is below the preset value, an alarm will be prompted.

[0032] Preferably, a liquid level gauge 103 can also be provided in the oil tank 101 for auxiliary monitoring. If the liquid level transmitter 105 fails, the liquid level value in the oil tank 101 can be directly obtained through the liquid level gauge 103, further ensuring the reliability of the system.

[0033] It should be noted that the composition and working principle of the oil drain ball valve 112, temperature sensor 102, breather 104, liquid level transmitter 105 and liquid level gauge 103 are well known to those skilled in the art, and will not be described in detail here.

[0034] The servo drive unit is used to pump the hydraulic oil in the oil tank 101 to the corresponding oil circuit through the servo drive unit. The servo drive unit includes a motor 108, a bell-shaped cover 109, a coupling 110 and a gear pump 111.

[0035] The drive shaft of the motor 108 is connected to the pump shaft of the gear pump 111 through the coupling 110 to achieve transmission between the motor 108 and the gear pump 111. The oil in the oil tank 101 is delivered to the corresponding energy supply branch system 200 through the output pipeline through the gear pump 111, while the bell-shaped cover 109 is used to ensure coaxial operation between the motor 108 and the gear pump 111.

[0036] Preferably, an oil suction ball valve 107 is provided at the oil suction port of the gear pump 111 to avoid poor oil suction capacity of the gear pump 111 and improve the oil supply environment.

[0037] Preferably, an oil suction filter 106 is also provided at the oil suction port of the gear pump 111. The hydraulic oil sucked by the gear pump 111 is filtered through the oil suction filter 106 before being delivered to the branch oil circuit, which can filter out the first heavy impurities in the hydraulic oil in the oil tank 101 and avoid affecting the operation of the device.

[0038] Meanwhile, a pressure filter 113 is arranged at the output end of the gear pump 111, and the hydraulic oil in the oil tank 101 is filtered again by the pressure filter 113, so that the cleanliness of the oil is further ensured.

[0039] Preferably, a one-way valve 115 is arranged at the oil outlet of the gear pump 111, so that the hydraulic oil can only be unidirectionally delivered to the energy supply branch system 200, and the phenomenon of backflow is avoided, so that the oil circuit failure is avoided.

[0040] Preferably, a first pressure sensor 119 is arranged in the output pipeline of the energy supply main system 100, so that the pressure of the hydraulic oil delivered to the energy supply branch system 200 by the gear pump 111 is detected.

[0041] Further, the energy supply branch systems 200 are independently arranged and connected to the energy supply main system 100, and the hydraulic oil provided by the energy supply main system 100 is used to control the working of the energy supply branch systems 200. The energy supply branch systems 200 respectively include a proportional pressure reducing overflow valve 201, an electromagnetic reversing valve 204 and a servo oil cylinder 209.

[0042] The proportional pressure reducing overflow valve 201 is used to adjust the pressure of the hydraulic oil delivered to the energy supply branch system 200 and then output to the oil inlet of the servo oil cylinder 209, so that the energy pressure of different loading devices can be independently adjusted, the oil outlet of the servo oil cylinder 209 is connected to the corresponding device, and the loading of the device is realized.

[0043] Preferably, a second pressure sensor 202 and a second safety valve 203 are arranged on the proportional pressure reducing overflow valve 201, the second pressure sensor 202 is used to detect the pressure of the hydraulic oil adjusted by the proportional pressure reducing overflow valve 201, and the second safety valve 203 is used to protect the oil circuit to prevent the system pressure from being too high.

[0044] The electromagnetic reversing valve 204 is arranged between the proportional pressure reducing overflow valve 201 and the servo oil cylinder 209, and the fluid is controlled by the electromagnetic reversing valve 204. For example, refer to Figure 3 When the electromagnetic reversing valve 204a is electrified, the electromagnetic reversing valve 204b is not connected, the hydraulic oil enters the rodless cavity of the oil cylinder through the electromagnetic reversing valve 204a; when the electromagnetic reversing valve 204b is electrified, the electromagnetic reversing valve 204a is not connected, and the oil cylinder returns oil through the electromagnetic reversing valve 204b, and the servo oil cylinder 209 is depressurized.

[0045] Preferably, a hydraulic control check valve 206 is arranged in the output path of the electromagnetic reversing valve 204, the function type of the electromagnetic reversing valve 204 is improved, and the hydraulic control check valve 206 with pressure maintaining function is added, so that the pressure has little change in the design time and meets the requirements of users

[0046] Preferably, a third hydraulic sensor 205 is arranged in the output path of the electromagnetic reversing valve 204, and the third hydraulic sensor 205 is arranged to detect the pressure of the hydraulic oil output by the electromagnetic reversing valve 204.

[0047] An accumulator 207 is further arranged in the oil path, and when the required flow of the load during low-speed movement is less than the flow of the hydraulic pump, the excess flow of the hydraulic pump is stored in the accumulator 207, and when the required flow of the load is greater than the flow of the hydraulic pump, the liquid is discharged from the accumulator 207 to make up for the insufficient flow of the hydraulic pump, and at the same time, when the pressure of the system instantaneously increases, the accumulator 207 can absorb part of the energy to ensure the normal pressure of the entire system.

[0048] A stainless steel medium-high pressure ball valve 208 is arranged on both sides of the accumulator 207, which is used to cut off or connect the medium in the pipeline, and can also be used for flow regulation and control.

[0049] The servo oil cylinder 209 is provided with a return port, and the return port is connected with the oil tank 101 through a return pipeline, and a fourth hydraulic sensor 120 is arranged at the return port, which is used to detect the hydraulic pressure of the return oil delivered to the oil tank 101.

[0050] Meanwhile, a return oil filter 121 is arranged between the return pipeline and the oil tank 101, and the return oil is filtered by the return oil filter 121 before being delivered to the oil tank 101, so as to avoid pollution of the hydraulic oil in the oil tank 101 and waste of resources.

[0051] Further, a proportional overflow valve 118 is arranged in the return pipeline and the output oil path of the energy supply main system 100, which is used to stabilize the pressure in the output pipeline of the energy supply main system 100 and the return pipeline, and to protect overload, so that the hydraulic oil output to the energy supply branch system 200 is kept at a constant flow, and the safety of the oil path is ensured.

[0052] Meanwhile, a pressure measuring interface 116 is arranged on both sides of the proportional overflow valve 118, and the pressure measuring interface 116 is used to connect a pressure measuring device, so as to detect the pressure of the proportional overflow valve 118 or the oil path where the proportional overflow valve 118 is arranged.

[0053] Second, in the return line and energy supply main system 100 output oil line set with the first safety valve 117, by setting the first safety valve 117 to prevent the output oil line and return oil line pressure is too high, the output oil line and return oil line protection.

[0054] In addition, in the output oil line and return oil line also provided with electromagnetic unloading valve 114, for controlling the output and return circuit hydraulic oil pressure and flow, stable system working pressure, and protection of the system overload, when the system fails, the pressure is too high to exceed the set value, the pressure switch action, open the valve, the system internal high pressure discharge system, thereby avoiding overpressure caused by equipment damage or personal injury accidents.

[0055] The servo drive energy system device composed of the above scheme, which can be achieved in the multiple oil circuit working, main system for unloading state, each oil line in the cylinder can also be in the pressure holding function, the specific working process is as follows:

[0056] 1. Energy supply main system 100 pressure debugging:

[0057] 1.1. Start motor 108 through the bell cover 109 and shaft coupling 110 so that gear pump 111 starts to work, hydraulic oil through pressure filter 113 and check valve 115 to provide energy for each branch system, at this time the proportional relief valve 118 acts as a system pressure setting, the specific steps to set the system pressure are as follows:

[0058] 1.1.1: when the motor 108 motor normal work;

[0059] 1.1.2: electromagnetic unloading valve 114 power, the main system starts to build pressure;

[0060] 1.1.3: set the safety pressure of the first safety valve 117;

[0061] 1.1.4: set the system pressure of the proportional relief valve 118 (at this time 8 proportional relief valve 118 pressure is lower than the first safety valve 117 pressure);

[0062] 2. Energy supply branch system 200 pressure debugging:

[0063] 2.1: when at least one of the electromagnetic reversing valve 204 of the right end is powered; hydraulic through electromagnetic reversing valve 204, hydraulic control check valve 206, stainless steel high pressure ball valve 208 to the servo cylinder;

[0064] 2.2: adjust the proportional pressure reducing relief valve 201 to adjust the cylinder pressure;

[0065] 3. Pressure holding:

[0066] 3.1: When the proportional pressure reducing overflow valve 201 is adjusted to regulate the cylinder pressure, the solenoid directional valve 204 is de-energized and in the neutral position, the solenoid unloading valve 114 is de-energized, the pressure of the gear pump 111 is unloaded through the solenoid unloading valve 114, and then the servo drive unit is turned off. At this time, the servo cylinder 209 is in the pressure holding state.

[0067] 4. Unloading:

[0068] 4.1: Restart motor 108 to run;

[0069] 4.2: When the electromagnetic unloading valve 114 is energized, the main system begins to build up pressure;

[0070] 4.3: When the left end of the solenoid directional valve 204 in at least one path is energized, the servo cylinder 209 is depressurized;

[0071] 5. The main system begins to depressurize; the pressure of the solenoid directional valve 204 and the proportional pressure reducing relief valve 201 is adjusted to zero, the solenoid unloading valve 114 is energized, and the motor 108 is shut off;

[0072] This solution enables multiple oil circuits to work simultaneously. While the main system is in an unloaded state, the oil cylinders in each oil circuit can still maintain pressure, thus achieving energy-saving effects.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A servo-driven energy system device, comprising a main energy supply system and several energy supply branch systems, wherein the main energy supply system includes an oil tank, a servo drive unit and a proportional relief valve, and the servo drive unit delivers hydraulic oil in the oil tank to the several energy supply branch systems after pressure regulation by the proportional relief valve. Its features are, The aforementioned energy supply branch systems each include a proportional pressure reducing relief valve, a solenoid directional valve, a hydraulically controlled check valve, and a servo cylinder. The proportional pressure reducing relief valve regulates the pressure of the hydraulic oil supplied to the energy supply branch system. The regulated hydraulic oil is then transmitted to the inlet of the servo cylinder after passing through the solenoid directional valve and the hydraulically controlled check valve.

2. The servo drive energy system device according to claim 1, characterized in that, The oil tank is equipped with a temperature sensor for monitoring the oil temperature inside the hydraulic oil tank.

3. The servo drive energy system device according to claim 1, characterized in that, The oil tank is equipped with a level transmitter to monitor the real-time level of the hydraulic oil. If the level is lower than a preset value, an alarm will be triggered.

4. The servo drive energy system device according to claim 1, characterized in that, The port of the servo drive unit is equipped with an oil suction filter, which performs the first stage of impurity filtration on the hydraulic oil drawn by the servo drive unit.

5. A servo drive energy system device according to claim 4, characterized in that, The output end of the servo drive unit is equipped with a pressure filter, which performs a second layer of impurity filtration on the hydraulic oil in the oil tank.

6. The servo drive energy system device according to claim 1, characterized in that, The energy supply branch system is also equipped with an accumulator for replenishing oil and absorbing pipeline pulsations.

7. A servo drive energy system device according to claim 1, characterized in that, The servo cylinder is equipped with an oil return port, which is connected to the oil tank through an oil return pipeline.

8. A servo drive energy system device according to claim 7, characterized in that, The return oil pipeline is fitted with a return oil filter between itself and the oil tank to filter the return oil.

9. A servo drive energy system device according to claim 7, characterized in that, The return oil pipeline and the output oil circuit of the main energy supply system are equipped with a first safety valve.

10. A servo drive energy system device according to claim 7, characterized in that, The return oil line and the output oil line of the main energy supply system are equipped with electromagnetic unloading valves.

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