CN115112373A - Engine actuator cylinder test examination device - Google Patents
Engine actuator cylinder test examination device Download PDFInfo
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- CN115112373A CN115112373A CN202210726607.2A CN202210726607A CN115112373A CN 115112373 A CN115112373 A CN 115112373A CN 202210726607 A CN202210726607 A CN 202210726607A CN 115112373 A CN115112373 A CN 115112373A
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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
- G01M15/00—Testing of engines
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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
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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Abstract
The application belongs to an engine adjusting mechanism actuator cylinder test loading device, and particularly relates to an engine actuator cylinder test examining device which comprises a fixing device, a fixing device and an actuator cylinder test piece, wherein the fixing device is provided with a vertical wall surface, the tail end of an outer cylinder of the actuator cylinder test piece is hinged to the wall surface, and a piston rod of the actuator cylinder test piece is hinged to a rocker arm; the resistance simulation device comprises a stand column cross beam, an actuating cylinder, a torque adding seat and a torque transmission shaft, wherein one end of the torque transmission shaft is arranged on the torque adding seat through a bearing, the other end of the torque transmission shaft penetrates through the vertical wall surface and is hinged with the rocker arm, the side wall of the torque transmission shaft is hinged with an output shaft of the actuating cylinder through a support arm extending in the radial direction, and an outer cylinder of the actuating cylinder is hinged with the stand column cross beam; the transverse force loading device comprises a connecting piece connected with one end, close to the piston rod, of the outer cylinder of the actuator cylinder test piece and a driving device connected with the connecting piece and providing transverse force perpendicular to the axial direction of the piston rod, and the reliability and the durability of the actuator cylinder can be effectively checked.
Description
Technical Field
The application belongs to a loading device for an engine actuator cylinder test of an engine adjusting mechanism, and particularly relates to a test and assessment device for an engine actuator cylinder.
Background
The actuating cylinder of the engine adjusting mechanism is an important component of the adjusting mechanism, provides a power source for adjusting the position of the blade for the adjusting mechanism, and the reliability of the actuating cylinder is related to whether the performance adjusting function of the engine can be realized in time. When the engine fails, a series of functions of the engine are influenced, and serious accidents such as severe abrasion or oil leakage and the like are caused if the engine fails, and the engine stops if the engine fails. Therefore, the examination test and the verification of the actuator are indispensable processes in the engine development process. At present, the general assessment method for the actuator of the adjusting mechanism comprises a pressing test, a pressure pulsation test, a durability test and the like. Usually, a special test device specially aiming at the use working condition of the actuator cylinder is not available, and the influence caused by transverse load and the like in the working process of the actuator cylinder cannot be examined. Therefore, the assessment on the actuating cylinder is incomplete, the actual working condition of the actuating cylinder is not completely assessed, and the assessment test on the actuating cylinder can examine performance parameters such as sealing condition, operation function and the like. However, in practical use, a complex installation structure and a complex stress condition may occur, for example, except for a stress form of a two-force rod structure in which the actuator cylinder is hinged back and forth, a large lateral load may be generated in a movement process due to the existence of a friction force at a hinge position, the existence of the lateral load causes uneven stress on a piston and a sealing element inside the actuator cylinder, lateral pressure of a sealant is increased, loss of the sealing element is deepened or a large amount of local abrasion of the cylinder wall of the actuator cylinder is generated, and a failure risk that the actuator cylinder is stuck and immobilized is generated. The existing actuator cylinder assessment method cannot meet the assessment requirements of the working conditions of the specific working environment.
Disclosure of Invention
In order to solve the above problems, the present application provides an engine actuator cylinder test assessment device, including:
the fixing device is provided with a vertical wall surface, the tail end of the outer cylinder of the actuator cylinder test piece is hinged to the wall surface, and a piston rod of the actuator cylinder test piece is hinged to a rocker arm;
the resistance simulation device comprises an upright post cross beam, an actuating cylinder, a torque adding seat and a torque transmission shaft, wherein one end of the torque transmission shaft is arranged on the torque adding seat through a bearing, the other end of the torque transmission shaft penetrates through the vertical wall surface and is hinged with a rocker arm, the side wall of the torque transmission shaft is hinged with an output shaft of the actuating cylinder through a support arm extending in the radial direction, and an outer cylinder of the actuating cylinder is hinged with the upright post cross beam;
the transverse force loading device comprises a connecting piece connected with one end, close to the piston rod, of the outer cylinder of the actuator cylinder test piece and a driving device connected with the connecting piece and providing force perpendicular to the axial direction of the piston rod.
The technical characteristics provide a resistance providing simulation device and a transverse force loading device for two forces of the actuator cylinder test piece, and the defect that the transverse force loading is not generated in the traditional actuator cylinder test piece experiment is overcome.
Preferably, the actuator cylinder test piece is provided with a displacement sensor and a force sensor, the displacement sensor and the force sensor are respectively connected with an electro-hydraulic servo controller, and the electro-hydraulic servo controller controls the flow of the high-pressure oil source entering the actuator cylinder test piece by controlling a first electro-hydraulic servo valve so as to control the actuator cylinder test piece to actuate.
Preferably, the electro-hydraulic servo controller is further connected with a second electro-hydraulic servo valve, the second electro-hydraulic servo valve controls the actuating cylinder to actuate, the actuating cylinder is connected with the second electro-hydraulic servo valve 17, the actuating cylinder serves as an actuating mechanism of a second electro-hydraulic servo system, the axial force serves as a feedback form to form a closed-loop force control system, the closed-loop force control system and the displacement control mode of the actuating cylinder test piece are tested synchronously, and the axial force of the actuating cylinder is always opposite to the movement direction of the actuating cylinder test piece.
Preferably, the actuator cylinder is a double-output-rod actuator, the double-output-rod actuator is provided with two pressure cavities, the two pressure cavities are communicated through a throttle valve, the device forms a throttle resistance simulation, the testing device is placed on a basic platform, the actuator cylinder can apply resistance to a torsion shaft, when a knob of the throttle valve is adjusted to be small, when the flow is controlled to be output, the actuator cylinder test piece controlled by the electro-hydraulic servo controller moves according to a position load spectrum, and the torque is transmitted to the actuator cylinder test piece through the torsion shaft. Because the two pressure cavities of the double-rod actuator are communicated through the throttle valve, when the flow rate of the throttle valve is reduced, the throttle valve can generate hydraulic resistance, and the resistance is balanced with the axial force of the piston rod of the actuator cylinder test piece. When the piston rod of the actuator is reversed and is converted from extension to contraction, the piston rods of the double-rod actuator are also reversed, hydraulic oil in the two pressure cavities of the double-rod actuator reversely flows, and resistance is still generated on the piston rod of the actuator cylinder test piece. Therefore, the resistance of the structure driven by the actuator cylinder test piece is simulated, and the throttle valve can adjust the resistance. By the above means, an adjustable resistance, i.e. an axial force on the piston rod of the actuator cylinder, is achieved.
Preferably, drive arrangement is weight loading subassembly, including the fixed pulley, the rope to and the weight, the fixed pulley with the connecting piece is located same horizontal plane, rope one end with the connecting piece is connected, and the other end hangs the weight and provides the pulling force, and the rope middle part is taken on the fixed pulley.
Preferably, the tail end of the outer cylinder of the actuator cylinder test piece is hinged to the wall surface, and the specific hinge mode is as follows: the tail end of the outer barrel is provided with a single-lug structure, the wall surface is provided with a double-lug structure, and the single-lug structure is hinged with the double-lug structure through a pin shaft.
Preferably, the axis of the pin shaft is parallel to the wall surface, the monaural structure and the binaural structure are in clearance fit, the pin shaft is in clearance fit with the monaural structure and the binaural structure respectively, and the test piece of the actuator cylinder can shake along the transverse force direction.
Preferably, the force sensor is a bonded strain gauge, the piston rod is always in a stressed state in the motion process, in order to effectively monitor the stressed state, the piston rod is modified, an axial force testing bridge circuit is arranged in a mode of bonding the strain gauge, and the axial force is calibrated into the controller in a load calibration mode before the test, so that the axial force can be monitored, and can also be used as a feedback input parameter to participate in the test control to serve as the resistance simulated by the patent.
Preferably, the electro-hydraulic servo controller is programmed with a displacement load spectrum, and the electro-hydraulic servo controller controls the actuating cylinder test piece to actuate through the displacement load spectrum.
Preferably, the driving device comprises a transverse force acting cylinder and a transverse force electro-hydraulic servo controller for controlling the transverse force acting cylinder, and transverse force can be synchronously loaded with movement and resistance in a coordinated mode, so that more refined test transverse force loading is met.
In summary, the advantages of the present application include:
1. effective test examination and verification on the working condition of the real actuator cylinder are realized;
2. simulating the actual use working condition of the actuating cylinder to realize the simulation of the working condition close to the real working environment;
3. the reliability and the durability of the actuator cylinder are effectively checked.
Drawings
FIG. 1 is a front view of a test evaluation device for an actuator cylinder of an engine according to an embodiment;
FIG. 2 is a side view of an engine actuator tube test assessment device according to an embodiment;
FIG. 3 is a view of a test examination apparatus for a second engine ram of the embodiment.
1-column cross beam; 2-an actuator cylinder; 3-simulating a switching structure; 4-torque adding seat; 5, fixing the cylinder; 6-a base platform; 7-a throttle valve; 8-a torsion transmission shaft; 9-actuator cylinder test piece; 10-force sensor feedback signal; 11-displacement sensor feedback signal; 12-an electro-hydraulic servo controller; 13-a high pressure oil source; 14-servo valve command signal; 15-high pressure oil pipe; 16-an electro-hydraulic servo valve; 17-weight loading assembly, 18-rocker arm.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are implementations that are part of this application and not all implementations. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The first embodiment is as follows: as shown in fig. 1, the test examination device for the engine actuator cylinder comprises:
the fixing device is provided with a vertical wall surface, the tail end of the outer cylinder of the actuator cylinder test piece 9 is hinged to the wall surface, and a piston rod of the actuator cylinder test piece is hinged to a rocker arm 18;
the resistance simulation device comprises an upright post beam 1, an actuating cylinder 2, a torque adding seat 4 and a torque transmission shaft 8, wherein one end of the torque transmission shaft 8 is installed on the torque adding seat 4 through a bearing, the other end of the torque transmission shaft passes through the vertical wall surface and is hinged with a rocker arm 18, the side wall of the torque transmission shaft 8 is hinged with an output shaft of the actuating cylinder 2 through a support arm extending in the radial direction, and the outer cylinder of the actuating cylinder 2 is hinged with the upright post beam 1;
the transverse force loading device comprises a connecting piece connected with one end, close to a piston rod, of an outer cylinder of the actuator cylinder test piece and a driving device connected with the connecting piece and providing force perpendicular to the axial direction of the piston rod, wherein a displacement sensor and a force sensor are installed on the actuator cylinder test piece 9, the displacement sensor and the force sensor are respectively connected with an electro-hydraulic servo controller 12, and the electro-hydraulic servo controller 12 controls the flow of a high-pressure oil source 13 entering the actuator cylinder test piece 9 by controlling a first electro-hydraulic servo valve 16 so as to control the actuator cylinder test piece 9 to actuate;
the electro-hydraulic servo controller 12 compiles a displacement load spectrum, and the electro-hydraulic servo controller 12 controls the actuating cylinder test piece 9 to actuate through the displacement load spectrum;
wherein, the terminal of the urceolus of pressurized strut test piece 9 articulates in the wall, and the concrete articulated mode is: the tail end of the outer barrel is provided with a single-lug structure, the wall surface is provided with a double-lug structure, the single-lug structure is hinged with the double-lug structure through a pin shaft, the axis of the pin shaft is parallel to the wall surface, the single lug structure and the double lug structure are in clearance fit, the pin shaft is in clearance fit with the single lug structure and the double lug structure respectively, the test piece 9 of the actuating cylinder can rock along the direction of the transverse force, the connecting mode of the test piece of the actuating cylinder of the structure is the same as the actual working environment, the fixing device is a working condition simulation switching structure which is completely the same as the actual working condition, the actuating cylinder test piece is arranged on the working condition simulation switching structure, the connection form of the test piece is the same as or similar to that of an engine so as to simulate the stress condition of the test piece of the actuating cylinder in the operation process, if the tailstock installation connection, the piston rod connection mode and the motion mode of the actuator cylinder test piece are the same as or similar to the actual structure;
the electro-hydraulic servo controller 12 is further connected with a second electro-hydraulic servo valve 17, the second electro-hydraulic servo valve 17 controls the actuating cylinder 2 to actuate, the actuating cylinder is connected with the second electro-hydraulic servo valve 17, the actuating cylinder serves as an actuating mechanism of a second electro-hydraulic servo system, axial force resistance serves as a feedback form to form a closed loop force control system, the closed loop force control system and a displacement control mode of an actuating cylinder test piece are tested synchronously, and the axial force of the actuating cylinder is always opposite to the movement direction of the actuating cylinder test piece.
The second embodiment: the test examination device of the engine actuator cylinder comprises:
the fixing device is provided with a vertical wall surface, the tail end of the outer cylinder of the actuator cylinder test piece 9 is hinged to the wall surface, and a piston rod of the actuator cylinder test piece is hinged to a rocker arm 18;
the resistance simulation device comprises an upright post beam 1, an actuating cylinder 2, a torque adding seat 4 and a torque transmission shaft 8, wherein one end of the torque transmission shaft 8 is installed on the torque adding seat 4 through a bearing, the other end of the torque transmission shaft passes through the vertical wall surface and is hinged with a rocker arm 18, the side wall of the torque transmission shaft 8 is hinged with an output shaft of the actuating cylinder 2 through a support arm extending in the radial direction, and the outer cylinder of the actuating cylinder 2 is hinged with the upright post beam 1;
the transverse force loading device comprises a connecting piece connected with one end, close to a piston rod, of an outer cylinder of the actuator cylinder test piece and a driving device connected with the connecting piece and providing force perpendicular to the axial direction of the piston rod, wherein a displacement sensor and a force sensor are installed on the actuator cylinder test piece 9, the displacement sensor and the force sensor are respectively connected with an electro-hydraulic servo controller 12, and the electro-hydraulic servo controller 12 controls the flow of a high-pressure oil source 13 entering the actuator cylinder test piece 9 by controlling a first electro-hydraulic servo valve 16 so as to control the actuator cylinder test piece 9 to actuate;
the electro-hydraulic servo controller 12 compiles a displacement load spectrum, and the electro-hydraulic servo controller 12 controls the actuating cylinder test piece 9 to actuate through the displacement load spectrum;
wherein, the terminal of the urceolus of pressurized strut test piece 9 articulates in the wall, and the concrete articulated mode is: the tail end of the outer barrel is provided with a single-lug structure, the wall surface is provided with a double-lug structure, the single-lug structure is hinged with the double-lug structure through a pin shaft, the axis of the pin shaft is parallel to the wall surface, the single lug structure and the double lug structure are in clearance fit, the pin shaft is in clearance fit with the single lug structure and the double lug structure respectively, the test piece 9 of the actuating cylinder can rock along the direction of the transverse force, the connecting mode of the test piece of the actuating cylinder of the structure is the same as the actual working environment, the fixing device is a working condition simulation switching structure which is completely the same as the actual working condition, the actuating cylinder test piece is arranged on the working condition simulation switching structure, the connection form of the test piece is the same as or similar to that of an engine so as to simulate the stress condition of the test piece of the actuating cylinder in the operation process, if the tailstock installation connection, the piston rod connection mode and the motion mode of the actuator cylinder test piece are the same as or similar to the actual structure;
different from the first embodiment, the electro-hydraulic servo controller 12 is further connected with a second electro-hydraulic servo valve 17, the second electro-hydraulic servo valve 17 controls the actuating cylinder 2 to actuate, the actuating cylinder is connected with the second electro-hydraulic servo valve 17, the actuating cylinder serves as an actuating mechanism of a second electro-hydraulic servo system, axial force resistance serves as a feedback form to form a closed loop control system, the closed loop control system is synchronously tested with a displacement control mode of an actuating cylinder test piece, the axial force of the actuating cylinder is always opposite to the movement direction of the actuating cylinder test piece, the actuating cylinder 2 is a double-rod actuator, the double-rod actuator is provided with two pressure chambers, the two pressure chambers are communicated through a throttle valve, the device forms a throttle resistance simulation, the test device is placed on a base platform, the actuating cylinder can apply resistance to a torsion shaft, when the knob of the throttle valve is adjusted to be small, and when the control flow is discharged, the actuating cylinder test piece controlled by the electro-hydraulic servo controller moves according to a position spectrum, torque is transmitted to the ram test piece through a torque transmitting shaft. Because the two pressure cavities of the double-rod actuator are communicated through the throttle valve, when the flow rate of the throttle valve is reduced, the throttle valve can generate hydraulic resistance, and the resistance is balanced with the axial force of the piston rod of the actuator cylinder test piece. When the piston rod of the actuator is reversed and is converted from extension to contraction, the piston rods of the double-rod actuator are also reversed, hydraulic oil in the two pressure cavities of the double-rod actuator reversely flows, and resistance is still generated on the piston rod of the actuator cylinder test piece. Therefore, the resistance of the structure driven by the actuator cylinder test piece is simulated, and the throttle valve can adjust the resistance. By the above means, an adjustable resistance, i.e. an axial force on the piston rod of the actuator cylinder, is achieved.
The technical characteristics provide a resistance providing simulation device and a transverse force loading device for two forces of the actuator cylinder test piece 9, the defect that the transverse force loading is not generated in the traditional actuator cylinder test piece 9 experiment is overcome, and effective test examination and verification on the real actuator cylinder working condition are realized; simulating the actual use working condition of the actuating cylinder to realize the simulation of the working condition close to the real working environment; the reliability and the durability of the actuator cylinder are effectively checked.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An engine actuator cylinder test examination device is characterized by comprising:
the fixing device is provided with a vertical wall surface, the tail end of the outer cylinder of the actuator cylinder test piece (9) is hinged to the wall surface, and a piston rod of the actuator cylinder test piece (9) is hinged to a rocker arm (18);
the resistance simulation device comprises a vertical column cross beam (1), an actuating cylinder (2), a torsion adding seat (4) and a torsion transmission shaft (8), wherein one end of the torsion transmission shaft (8) is installed on the torsion adding seat (4) through a bearing, the other end of the torsion transmission shaft penetrates through the vertical wall surface and is hinged with a rocker arm (18), the side wall of the torsion transmission shaft (8) is hinged with an output shaft of the actuating cylinder (2) through a support arm extending in the radial direction, and an outer cylinder of the actuating cylinder (2) is hinged with the vertical column cross beam (1);
the transverse force loading device comprises a connecting piece connected with one end, close to the piston rod, of the outer cylinder of the actuator cylinder test piece and a driving device connected with the connecting piece and providing transverse force perpendicular to the axial direction of the piston rod.
2. The test and examination device for the engine actuator cylinder as claimed in claim 1, wherein the actuator cylinder test piece (9) is provided with a displacement sensor and a force sensor, the displacement sensor and the force sensor are respectively connected with an electro-hydraulic servo controller (12), and the electro-hydraulic servo controller (12) controls the flow of the high-pressure oil source (13) into the actuator cylinder test piece (9) by controlling a first electro-hydraulic servo valve (16), so as to control the actuation of the actuator cylinder test piece (9).
3. The test assessment device for the engine actuator cylinder as claimed in claim 2, wherein the electro-hydraulic servo controller (12) is further connected with a second electro-hydraulic servo valve (17), and the second electro-hydraulic servo valve (17) controls the actuation of the actuator cylinder (2).
4. The engine ram test assessment device of claim 1, wherein the ram (2) is a dual-rod actuator having two pressure chambers, the two pressure chambers being in communication via a throttle valve.
5. The test assessment device for the engine actuating cylinder as claimed in claim 1, wherein the driving device is a weight loading assembly (17) comprising a fixed pulley, a rope and a weight, the fixed pulley and the connecting member are located on the same horizontal plane, one end of the rope is connected with the connecting member, the other end of the rope is hung on the weight to provide tension, and the middle part of the rope is lapped on the fixed pulley.
6. The test assessment device for the engine actuator cylinder as claimed in claim 1, wherein the tail end of the outer cylinder of the actuator cylinder test piece (9) is hinged to the wall surface in a specific manner: the tail end of the outer barrel is provided with a single-lug structure, the wall surface is provided with a double-lug structure, and the single-lug structure is hinged with the double-lug structure through a pin shaft.
7. The engine ram test assessment device as claimed in claim 6, wherein the axis of the pin is parallel to the wall surface, the monaural structure and the binaural structure are in clearance fit, and the pin is in clearance fit with the monaural structure and the binaural structure respectively, so as to enable the ram test piece (9) to rock in the transverse force direction.
8. The engine ram test assessment device of claim 2 wherein the force sensor is a strain gage.
9. The engine ram test assessment device of claim 1, wherein the electro-hydraulic servo controller (12) is programmed with a displacement load spectrum, and the electro-hydraulic servo controller (12) controls the actuation of the ram test piece (9) through the displacement load spectrum.
10. The engine ram test assessment device of claim 1, wherein said drive means comprises a lateral force actuator and a lateral force electro-hydraulic servo controller controlling the lateral force actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210726607.2A CN115112373A (en) | 2022-06-23 | 2022-06-23 | Engine actuator cylinder test examination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210726607.2A CN115112373A (en) | 2022-06-23 | 2022-06-23 | Engine actuator cylinder test examination device |
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| Publication Number | Publication Date |
|---|---|
| CN115112373A true CN115112373A (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210726607.2A Pending CN115112373A (en) | 2022-06-23 | 2022-06-23 | Engine actuator cylinder test examination device |
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| Country | Link |
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| CN (1) | CN115112373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086706A (en) * | 2023-01-29 | 2023-05-09 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Actuator cylinder test device and test method thereof |
-
2022
- 2022-06-23 CN CN202210726607.2A patent/CN115112373A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116086706A (en) * | 2023-01-29 | 2023-05-09 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Actuator cylinder test device and test method thereof |
| CN116086706B (en) * | 2023-01-29 | 2024-01-30 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Actuator cylinder test device and test method thereof |
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