CN112412910A - Hydraulic loading servo control system and control method for output shaft of speed reducer - Google Patents
Hydraulic loading servo control system and control method for output shaft of speed reducer Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 239000013589 supplement Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/632—Electronic controllers using input signals representing a flow rate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6656—Closed loop control, i.e. control using feedback
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A hydraulic loading servo control system and a control method for an output shaft of a speed reducer relate to the technical field of hydraulic control systems and comprise an oil tank, a pump motor group A, a pump motor group B, a test piece, an oil motor and a cooler, wherein oil inlets of the pump motor group A and the pump motor group B are respectively connected with the oil tank, an outlet of the pump motor group A is connected with an inlet of the oil motor through a pipeline A, a one-way valve A, a pressure gauge A and a pressure sensor A are sequentially arranged on the pipeline A, an output end of the oil motor is fixedly connected with the test piece through a coupler, an oil outlet of the oil motor is connected with a control oil port (A, B) of the servo valve through a pipeline B, an oil return port (T) of the servo valve is connected with the cooler through a pipeline C, and an oil outlet of the cooler; the invention has simple structure and realizes the accurate control and regulation of the torque and the rotating speed of the tested piece.
Description
Technical Field
The invention relates to the technical field of hydraulic control systems, in particular to a hydraulic loading servo control system and a control method for an output shaft of a speed reducer.
Background
It is known that, for the output shaft of the speed reducer, a load test is often carried out, and the adoption of hydraulic dragging loading is an efficient and economic way, but in the prior art, the control on the torque and the rotating speed of an oil motor is not accurate, and the oil temperature cannot be controlled in a working range, so that the precise control and adjustment on the torque and the rotating speed of a tested piece are provided, and the method becomes a basic requirement of a person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a hydraulic loading servo control system and a control method for an output shaft of a speed reducer.
In order to realize the purpose, the invention adopts the following technical scheme:
a hydraulic loading servo control system for an output shaft of a speed reducer comprises an oil tank, a pump motor set A, a pump motor set B, a test piece, an oil motor and a cooler, wherein oil inlets of the pump motor set A and the pump motor set B are respectively connected with the oil tank, an outlet of the pump motor set A is connected with an inlet of the oil motor through a pipeline A, a check valve A, a pressure gauge A and a pressure sensor A are sequentially arranged on the pipeline A, an output end of the oil motor is fixedly connected with the test piece through a coupler, an oil outlet of the oil motor is connected with a control oil port (A, B) of the servo valve through a pipeline B, an oil return port (T) of the servo valve is connected with the cooler through a pipeline C, and an oil outlet of the cooler is connected into the oil tank;
a pressure sensor B is arranged at the oil outlet end of the oil motor, a pipeline D is connected in parallel with the pipeline B at the inlet end and the outlet end of the flowmeter, and an overflow valve and a one-way valve C are sequentially arranged on the pipeline D;
a pipeline E is arranged between a pipeline A between the pressure gauge A and the pressure sensor A and a pipeline C at the oil inlet end of the cooler, and an electromagnetic overflow valve A is arranged on the pipeline E;
a pipeline F is arranged between the pipeline A at the oil inlet end of the oil motor and the pipeline E, and a one-way valve B is arranged on the pipeline F.
The hydraulic loading servo control system for the output shaft of the speed reducer is characterized in that a pipeline G is connected between an oil outlet of a pump motor group B and an external control oil port (X) of a servo valve, a check valve C and an oil filter are sequentially arranged on the pipeline G, a pressure gauge B is arranged on the pipeline G at the oil outlet end of the check valve C, an electromagnetic overflow valve C is arranged on the pipeline G between the check valve C and the oil filter, and redundant oil overflowing from the electromagnetic overflow valve C is connected with a port C on a cooler oil inlet port pipeline C through the port C and enters an oil tank through a cooler.
The hydraulic loading servo control system for the output shaft of the speed reducer is characterized in that an electromagnetic overflow valve B is arranged on a pipeline between the control oil ports (A, B) of the servo valve and the oil return port (T) of the servo valve.
A control method for a hydraulic loading servo system of an output shaft of a speed reducer comprises an oil tank, a pump motor group A, a pump motor group B, a test piece, an oil motor and a cooler, wherein the test piece drives the oil motor to rotate, the oil motor is actively supplemented with oil from the oil tank by the pump motor group, an oil supplementing path is decompressed when an electromagnet of an electromagnetic overflow valve A is electrified, no-load starting and stopping of the pump motor group A are realized, and oil can be absorbed from the oil tank through a one-way valve B when the active oil supplementing is insufficient; the pressure sensor B detects the oil discharge pressure of the oil motor, the flow meter detects the oil discharge flow of the oil motor, and the pressure and flow signals are in closed-loop control with the servo valve, so that the rotating speed and the torque of a test piece are accurately controlled; the highest pressure of the outlet of the flowmeter, namely the pressure of the ports of the servo valves (A, B), is protected by overpressure provided by an electromagnetic overflow valve B, and the overflow returns to the oil tank when the pressure exceeds the set value of the valve; and the servo valve controls the pump motor set B to supply oil, the control oil pressure is set by the electromagnetic overflow valve C, and the oil path is controlled to release pressure when the electromagnet is electrified, so that the no-load start and stop of the pump motor set are realized.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. according to the hydraulic loading servo control system of the output shaft of the speed reducer, the maximum oil supplementing pressure is set through the electromagnetic overflow valve A4, the no-load starting and stopping of the pump motor set A2 are realized, and the oil can be absorbed from an oil tank through the one-way valve B5 when the active oil supplementing is insufficient; the pressure sensor A6 and the pressure sensor B9 respectively detect the pressure of an oil inlet and an oil outlet of the oil motor 8, the flowmeter 10 detects the oil discharge flow of the oil motor 8, and the overflow valve 11 and the check valve C12 are arranged as bypass oil paths of the flowmeter 10 to prevent the over-large pressure difference between the inlet and the outlet of the flowmeter 10; the servo valve 13, the pressure sensor B9 and the flowmeter 10 realize the precise control of the torque and the rotating speed of the oil motor 8 in a closed loop;
2. according to the hydraulic loading servo control system of the output shaft of the speed reducer, a servo valve 13 adopts an external control mode, an external control oil port X is independently supplied with oil through a pump motor group B15 through a one-way valve C16 and an oil filter 18, an electromagnetic overflow valve C17 is used for setting the pressure of a control oil path and starting and stopping the pump motor group B15 in a no-load mode, a cooler 19 is arranged on an oil return path to cool oil, and the oil temperature is controlled within a working range; the invention has simple structure and realizes the accurate control and regulation of the torque and the rotating speed of the tested piece.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. an oil tank; 2. a pump motor group A; 3. a one-way valve A; 4. an electromagnetic overflow valve A; 5. a check valve B; 6. a pressure sensor A; 7. testing the piece; 8. an oil motor; 9. a pressure sensor B; 10. a flow meter; 11. an overflow valve; 12. a check valve C; 13. a servo valve; 14. an electromagnetic overflow valve B; 15. a pump motor group B; 16. a check valve C; 17. an electromagnetic overflow valve C; 18. an oil filter; 19. a cooler; 20. a pressure gauge A; 21. and a pressure gauge B.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
The hydraulic loading servo control system for the output shaft of the speed reducer, which is described in connection with the attached drawing 1, comprises an oil tank 1, a pump motor group a2, a pump motor group B15, a test piece 7, an oil motor 8 and a cooler 19, wherein oil inlets of the pump motor group a2 and the pump motor group B15 are respectively connected with the oil tank 1, an outlet of the pump motor group a2 is connected with an inlet of the oil motor 8 through a pipeline a, a one-way valve A3, a pressure gauge a20 and a pressure sensor a6 are sequentially arranged on the pipeline a, an output end of the oil motor 8 is fixedly connected with the test piece 7 through a coupler, an oil outlet of the oil motor 8 is connected with control oil ports (a, B) of a servo valve 13 through a pipeline B, an oil return port (T) of the servo valve 13 is connected with the cooler 19 through a pipeline C, and an oil outlet of the cooler;
a pressure sensor B9 is arranged at the oil outlet end of the oil motor 8, a pipeline D is connected in parallel with the pipeline B at the inlet end and the outlet end of the flowmeter 10, and an overflow valve 11 and a one-way valve C12 are sequentially arranged on the pipeline D;
a pipeline E is arranged between a pipeline A between the pressure gauge A20 and the pressure sensor A6 and a pipeline C at the oil inlet end of the cooler 19, and an electromagnetic overflow valve A4 is arranged on the pipeline E;
a pipeline F is arranged between the pipeline A and the pipeline E at the oil inlet end of the oil motor 8, and a one-way valve B5 is arranged on the pipeline F.
In the hydraulic loading servo control system for the output shaft of the speed reducer, a pipeline G is connected between an oil outlet of a pump motor group B15 and an external control oil port (X) of a servo valve 13, a check valve C16 and an oil filter 18 are sequentially arranged on the pipeline G, a pressure gauge B21 is arranged on the pipeline G at the oil outlet end of the check valve C16, an electromagnetic overflow valve C17 is arranged on the pipeline G between the check valve C16 and the oil filter 18, and redundant oil overflowing from the electromagnetic overflow valve C17 is connected with a C port on a pipeline C at the oil inlet port of a cooler 19 through the C port and enters the oil tank 1 through the cooler 19.
In the hydraulic loading servo control system for the output shaft of the speed reducer, an electromagnetic overflow valve B14 is arranged on a pipeline between control oil ports (A, B) of the servo valve 13 and an oil return port (T) of the servo valve 13.
A control method for a hydraulic loading servo system of an output shaft of a speed reducer comprises an oil tank 1, a pump motor group A2, a pump motor group B15, a test piece 7, an oil motor 8 and a cooler 19, wherein the test piece 7 drives the oil motor 8 to rotate, the oil motor 8 is actively supplemented with oil from the oil tank 1 through a pump motor group 2, an oil supplementing circuit is decompressed when an electromagnet of an electromagnetic overflow valve A4 is electrified, no-load starting and stopping of the pump motor group A2 are realized, and oil can be absorbed from the oil tank 1 through a check valve B5 when active oil supplementing is insufficient; the pressure sensor B9 detects the oil discharge pressure of the oil motor 8, the flowmeter 10 detects the oil discharge flow of the oil motor 8, and the pressure and flow signals are in closed-loop control with the servo valve 13, so that the rotating speed and the torque of the test piece 7 are accurately controlled; the highest pressure at the outlet of the flowmeter 10, namely the pressure at the port AB of the servo valve 13, is protected by an electromagnetic overflow valve B14 to ensure that the pressure is overflowed to the oil tank 1 when the pressure exceeds the set value of the valve; the servo valve 13 controls the pump motor set B15 to supply oil, the pressure of the control oil is set by the electromagnetic overflow valve C17, and when the electromagnet is electrified, the oil path is controlled to release the pressure, so that the no-load start and stop of the pump motor set 15 are realized.
The implementation of the control method of the hydraulic loading servo system of the output shaft of the speed reducer has the following working principle description: the test piece 7 drives the oil motor 8 to rotate, the oil motor 8 is actively supplemented with oil from the oil tank 1 by the pump motor group 2, oil can be absorbed from the oil tank 1 through the check valve B5 when the active oil supplement is insufficient, the pressure sensor A6 on the pipeline A is used for detecting the oil supplement pressure, the oil supplement pipeline is decompressed when the electromagnet of the electromagnetic overflow valve A4 is electrified, and the no-load start and stop of the pump motor group A2 are realized; the oil discharged by the oil motor 8 returns to the oil tank 1 through the flow meter 10, the control oil ports (A, B) of the servo valve 13, the oil return port (T) of the servo valve 13 and the cooler 19, the pressure sensor B9 detects the oil discharge pressure of the oil motor 8, the flow meter 10 detects the oil discharge flow of the oil motor 8, and the overflow valve 11 and the check valve C12 are arranged as a bypass oil path of the flow meter 10 to prevent the pressure difference between the inlet and the outlet of the flow meter 10 from being overlarge; the servo valve 13, the pressure sensor B9 and the flowmeter 10 realize the precise control of the torque and the rotating speed of the oil motor 8 in a closed loop; the highest pressure at the outlet of the flowmeter 10, namely the pressure at the port AB of the servo valve 13, is protected by an electromagnetic overflow valve B14 to provide overpressure protection, the pressure overflows back to the oil tank 1 when exceeding the set value of the valve, the electromagnetic overflow valve 14 has a pressure relief function at the same time, the oil circuit is relieved when the electromagnet is electrified, and the oil return circuit cooler 19 is used for cooling oil and controlling the oil temperature in a working range. The servo valve 13 adopts an external control mode, the pump motor set B15 is controlled to supply oil, the oil enters a control oil port X of the servo valve 13 through a one-way valve C16 and an oil filter 18, the control oil pressure is set by an electromagnetic overflow valve C17, the electromagnetic overflow valve C17 has a pressure relief function at the same time, and an oil circuit is controlled to relieve the pressure when an electromagnet is electrified, so that the no-load start and stop of the pump motor set 15 are realized.
The present invention is not described in detail in the prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments which fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a hydraulic pressure loading servo control system to speed reducer output shaft, includes oil tank, pump motor group A, pump motor group B, test piece, oil motor and cooler, characterized by: oil inlets of a pump motor set A and a pump motor set B are respectively connected with an oil tank, an outlet of the pump motor set A is connected with an inlet of an oil motor through a pipeline A, a one-way valve A, a pressure gauge A and a pressure sensor A are sequentially arranged on the pipeline A, an output end of the oil motor is fixedly connected with a test piece through a coupler, an oil outlet of the oil motor is connected with control oil ports (A, B) of a servo valve through a pipeline B, an oil return port (T) of the servo valve is connected with a cooler through a pipeline C, and an oil outlet of the cooler is connected into the oil tank;
a pressure sensor B is arranged at the oil outlet end of the oil motor, a pipeline D is connected in parallel with the pipeline B at the inlet end and the outlet end of the flowmeter, and an overflow valve and a one-way valve C are sequentially arranged on the pipeline D;
a pipeline E is arranged between a pipeline A between the pressure gauge A and the pressure sensor A and a pipeline C at the oil inlet end of the cooler, and an electromagnetic overflow valve A is arranged on the pipeline E;
a pipeline F is arranged between the pipeline A at the oil inlet end of the oil motor and the pipeline E, and a one-way valve B is arranged on the pipeline F.
2. The hydraulic loading servo control system for the reducer output shaft according to claim 1, characterized in that: a pipeline G is connected between an oil outlet of the pump motor group B and an external control oil port (X) of the servo valve, a one-way valve C and an oil filter are sequentially arranged on the pipeline G, a pressure gauge B is arranged on the pipeline G at the oil outlet end of the one-way valve C, an electromagnetic overflow valve C is arranged on the pipeline G between the one-way valve C and the oil filter, and redundant oil overflowing from the electromagnetic overflow valve C is connected with a port C on a cooler oil inlet port pipeline C through the port C and enters an oil tank through a cooler.
3. The hydraulic loading servo control system for the reducer output shaft according to claim 1, characterized in that: an electromagnetic overflow valve B is arranged on a pipeline between the control oil ports (A, B) of the servo valve and an oil return port (T) of the servo valve.
4. The method for controlling the hydraulic loading servo system of the output shaft of the speed reducer according to any one of claims 1 to 3, comprising an oil tank, a pump motor group A, a pump motor group B, a test piece, an oil motor and a cooler, wherein the method comprises the following steps: the test piece drives the oil motor to rotate, the oil motor is actively supplemented with oil from the oil tank by the pump motor group, an oil supplementing path is decompressed when an electromagnet of the electromagnetic overflow valve A is electrified, no-load starting and stopping of the pump motor group A are realized, and oil can be absorbed from the oil tank through the check valve B when the active oil supplementing is insufficient; the pressure sensor B detects the oil discharge pressure of the oil motor, the flow meter detects the oil discharge flow of the oil motor, and the pressure and flow signals are in closed-loop control with the servo valve, so that the rotating speed and the torque of a test piece are accurately controlled; the highest pressure of the outlet of the flowmeter, namely the pressure of the ports of the servo valves (A, B), is protected by overpressure provided by an electromagnetic overflow valve B, and the overflow returns to the oil tank when the pressure exceeds the set value of the valve; and the servo valve controls the pump motor set B to supply oil, the control oil pressure is set by the electromagnetic overflow valve C, and the oil path is controlled to release pressure when the electromagnet is electrified, so that the no-load start and stop of the pump motor set are realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011227237.5A CN112412910B (en) | 2020-11-06 | 2020-11-06 | Hydraulic loading servo control system and control method for output shaft of speed reducer |
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| CN202011227237.5A CN112412910B (en) | 2020-11-06 | 2020-11-06 | Hydraulic loading servo control system and control method for output shaft of speed reducer |
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| CN112412910A true CN112412910A (en) | 2021-02-26 |
| CN112412910B CN112412910B (en) | 2024-06-14 |
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| CN206830573U (en) * | 2017-06-08 | 2018-01-02 | 四川理工学院 | A kind of multifunctional solution compression testing device |
| CN110500344A (en) * | 2019-08-26 | 2019-11-26 | 天津格特斯检测设备技术开发有限公司 | A kind of surge pilot system |
| CN211039842U (en) * | 2019-10-29 | 2020-07-17 | 熊川阀门技术河北有限公司 | Back pressure valve |
| CN213928961U (en) * | 2020-11-06 | 2021-08-10 | 中色科技股份有限公司 | Hydraulic loading servo control system for output shaft of speed reducer |
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