Stationary blade adjusting mechanism motion simulation test bench

Abstract

A static blade adjusting mechanism motion simulation test bench belongs to the technical field of multi-body dynamics tests and comprises a driving assembly, a transmission assembly, an execution assembly and a measurement assembly. The driving assembly is connected with the transmission assembly, the transmission assembly is connected with the execution assembly, and the measuring assembly is arranged on the transmission assembly and the execution assembly. The driving assembly takes a motor as a power source, drives a triangular crank of the transmission assembly to rotate, further drives a plate type simulation linkage ring of the execution assembly to rotate and translate along an optical axis, and finally drives a plate type simulation blade to perform rotation angle adjustment through a rocker arm by the plate type simulation linkage ring. In the moving process of the stationary blade adjusting mechanism, the rotation angles of the triangular crank, the plate-type simulation blade and the plate-type simulation linkage ring can be measured in real time through angle sensors in the measuring assembly. The characteristics of rotation and translation of the linkage ring are fully considered, the movement of the stationary blade adjusting mechanism can be simulated more truly, and the dynamic characteristics of the stationary blade adjusting mechanism can be reflected more comprehensively.

Description

Technical Field

[0001] The invention belongs to the technical field of multi-body dynamics tests, and in particular relates to a motion simulation test bench for a stationary blade regulating mechanism. Background Art

[0002] The stator blade adjustment mechanism is a key structure of the compressor. It is mainly used to adjust and control the position and displacement of the blades with a certain precision. It is involved in the aircraft, ship, vehicle, construction and other industries, such as the stator blade adjustment mechanism of aircraft engines, the stator blade adjustment mechanism of marine gas turbines, and the mechanical blade adjustment mechanism of axial flow pumps.

[0003] Compared with other motion mechanisms, the stationary blade adjustment mechanism has the characteristics of compact structure, complex motion, the linkage ring rotates around the engine axis and moves along the engine axis, and the rocker arm moves parallel to the linkage ring while rotating. As the working environment and the tasks handled become more and more complex, the structural design requirements for the stationary blade adjustment mechanism are becoming higher and higher, and the issues that need to be considered in design and manufacturing are becoming more and more in-depth.

[0004] Chinese patent application with application number 201710828076.7 discloses a compressor stator blade adjustment mechanism, Chinese patent application with application number 202210688795.4 discloses a stator blade adjustment mechanism and an aircraft engine, and Chinese patent application with application number 202011155422.8 discloses a compressor and an adjustment mechanism for adjustable stator blades. Although the above patent applications all involve stator blade adjustment mechanisms, none of them are simulation test equipment for stator blade adjustment mechanisms and cannot be used to conduct dynamic research.

[0005] The Chinese patent application with application number 202310481837.1 discloses a multi-parameter test bench for an aircraft engine stator blade adjustment mechanism and a test method thereof. This scheme can only study the influence of the compressor stator blade adjustment mechanism on the dynamic characteristics of the rocker arm. The scheme does not consider the influence of the linkage ring movement and the translational movement of the rocker arm on the dynamic characteristics of the rocker arm.

[0006] The Chinese patent application with application number 202210250995.1 discloses a single-pole vane adjustment mechanism dynamic characteristics simulation test bench and test method. Although this scheme realizes the ability to analyze the dynamic characteristics of the entire vane adjustment mechanism, the scheme does not take into account the situation that the linkage ring, a key component, cannot move horizontally along the engine axis. Therefore, it cannot fully reflect the dynamic characteristics of the vane adjustment mechanism. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention provides a motion simulation test bench for a stator blade adjustment mechanism, which fully considers the characteristics of the linkage ring that it both rotates and moves horizontally, can more realistically simulate the motion of the stator blade adjustment mechanism, and thus can more comprehensively reflect the dynamic characteristics of the stator blade adjustment mechanism, effectively meeting the needs of conducting experimental research on the stator blade adjustment mechanism.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a motion simulation test bench for a stationary blade adjustment mechanism, comprising a drive component, a transmission component, an execution component and a measurement component; the drive component is connected to the transmission component, and the transmission component is connected to the execution component; the measurement component is arranged on the transmission component and the execution component.

[0009] The driving assembly includes a motor, a lead screw, a nut slider and a slide rail support; the motor is horizontally fixed at one end of the slide rail support; one end of the lead screw is rotatably connected to the other end of the slide rail support through a ball bearing, and the other end of the lead screw is coaxially fixed to the power output shaft of the motor, and the lead screw and the slide rail support are distributed in parallel; the nut slider is mounted on the lead screw, and the nut slider is in sliding contact with the slide rail support, and the nut slider has only linear movement freedom relative to the slide rail support.

[0010] The transmission assembly includes a first connecting rod, a triangular crank, a second connecting rod, a first fixed support and a first base plate; a first bearing seat is fixedly installed on the top of the nut slider, and a first rotating shaft is installed in the first bearing seat; the first fixed support is fixedly installed on the upper surface of the first base plate, a second bearing seat is fixedly installed on the top of the first fixed support, and a second rotating shaft is installed in the second bearing seat; the first corner point of the triangular crank is fixedly connected to the second rotating shaft, and a pin is installed at the second corner point of the triangular crank; one end of the first connecting rod is fixedly connected to the first rotating shaft, and the other end of the first connecting rod is hinged on the pin; one end of the second connecting rod is connected to the third corner point of the triangular crank through a first ball joint.

[0011] The execution assembly includes a plate-type simulation blade, a plate-type simulation linkage ring, a second fixed support, a third fixed support, a fourth fixed support, an optical axis, a linear bearing, a guide pin, a switching plug, a second base plate and a rocker arm; the second fixed support is fixedly mounted on the upper surface of the second base plate; a third rotating shaft is vertically mounted on the top of the second fixed support, and the plate-type simulation blade is fixedly connected to the third rotating shaft; the third fixed support and the fourth fixed support are fixedly mounted on the upper surface of the second base plate, and the optical axis is horizontally fixedly connected between the third fixed support and the fourth fixed support; the straight The linear bearing is sleeved on the optical axis, and the linear bearing has both rotational freedom and axial translational freedom relative to the optical axis; the lower end of the plate-type simulation linkage ring is fixedly connected to the linear bearing; the guide pin is fixedly arranged on the top of the plate-type simulation linkage ring, and the adapter block is sleeved on the guide pin, and the adapter block has linear sliding freedom relative to the guide pin; the upper end of the plate-type simulation linkage ring is connected to the other end of the second connecting rod through a second ball joint; one end of the rocker arm is fixedly connected to the third rotating shaft, and the other end of the rocker arm is connected to the adapter block through a third ball joint.

[0012] The measuring assembly includes a first angle sensor, a first sensor bracket, a second angle sensor, a second sensor bracket, a third angle sensor, a third sensor bracket, a first gear, a second gear, a fourth rotating shaft, a third bearing seat and a fourth bearing seat; the first sensor bracket is fixedly mounted on the upper surface of the first base plate, the first angle sensor is horizontally fixedly mounted on the first sensor bracket, and the measuring axis of the first angle sensor is coaxially fixedly connected with the second rotating shaft; the second sensor bracket is fixedly mounted on the top of the second fixed support, the second angle sensor is vertically fixedly mounted on the second sensor bracket, and the measuring axis of the second angle sensor is coaxially fixedly connected with the third rotating shaft; the first gear is coaxially sleeved on the linear bearing, and the first gear is fixedly connected with the plate-type simulation linkage ring; the third bearing seat and the fourth bearing seat are fixedly mounted on the upper surface of the second base plate, the fourth rotating shaft is penetrated on the third bearing seat and the fourth bearing seat, the second gear is fixedly mounted on the fourth rotating shaft, and the second gear is meshed with the first gear; the third sensor bracket is fixedly mounted on the upper surface of the second base plate, the third angle sensor is horizontally fixedly mounted on the third sensor bracket, and the measuring axis of the third angle sensor is coaxially fixedly connected with the fourth rotating shaft.

[0013] Beneficial effects of the present invention:

[0014] The motion simulation test bench for the stationary blade adjustment mechanism of the present invention fully considers the characteristics of the linkage ring that it can both rotate and translate, and can more realistically simulate the motion of the stationary blade adjustment mechanism, thereby being able to more comprehensively reflect the dynamic characteristics of the stationary blade adjustment mechanism, and effectively meeting the needs for conducting experimental research on the stationary blade adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a stationary blade adjustment mechanism motion simulation test bench of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the driving assembly of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the transmission assembly and the measuring assembly of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the execution component and the measurement component of the present invention;

[0019] In the figure, I—driving assembly, II—transmission assembly, III—executing assembly, IV—measuring assembly, 1—motor, 2—screw, 3—screw nut slider, 4—slide rail support, 5—first connecting rod, 6—triangular crank, 7—second connecting rod, 8—first fixed support, 9—first base plate, 10—first bearing seat, 11—first rotating shaft, 12—second bearing seat, 13—second rotating shaft, 14—pin shaft, 15—first ball joint, 16—plate type simulated blade, 17—plate type simulated linkage ring, 18—second fixed support, 19—third fixed support, 2 0—fourth fixed support, 21—optical axis, 22—linear bearing, 23—guide pin, 24—adapter block, 25—second base plate, 26—rocker arm, 27—third rotating shaft, 28—second ball joint, 29—third ball joint, 30—first angle sensor, 31—first sensor bracket, 32—second angle sensor, 33—second sensor bracket, 34—third angle sensor, 35—third sensor bracket, 36—first gear, 37—second gear, 38—fourth rotating shaft, 39—third bearing seat, 40—fourth bearing seat. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 4 As shown, a motion simulation test bench for a stationary blade adjustment mechanism includes a drive component I, a transmission component II, an execution component III and a measurement component IV; the drive component I is connected to the transmission component II, and the transmission component II is connected to the execution component III; the measurement component IV is arranged on the transmission component II and the execution component III.

[0022] The driving assembly I includes a motor 1, a lead screw 2, a nut slider 3 and a slide rail support 4; the motor 1 is horizontally fixed at one end of the slide rail support 4; one end of the lead screw 2 is rotatably connected to the other end of the slide rail support 4 through a ball bearing, and the other end of the lead screw 2 is coaxially fixed to the power output shaft of the motor 1, and the lead screw 2 is distributed parallel to the slide rail support 4; the nut slider 3 is mounted on the lead screw 2, and the nut slider 3 is in sliding contact with the slide rail support 4, and the nut slider 3 has only linear movement freedom relative to the slide rail support 4.

[0023] The transmission assembly II includes a first connecting rod 5, a triangular crank 6, a second connecting rod 7, a first fixed support 8 and a first base plate 9; a first bearing seat 10 is fixedly installed on the top of the nut slider 3, and a first rotating shaft 11 is passed through the first bearing seat 10; the first fixed support 8 is fixedly installed on the upper surface of the first base plate 9, a second bearing seat 12 is fixedly installed on the top of the first fixed support 8, and a second rotating shaft 13 is passed through the second bearing seat 12; the first corner point of the triangular crank 6 is fixedly connected to the second rotating shaft 13, and a pin 14 is installed at the second corner point of the triangular crank 6; one end of the first connecting rod 5 is fixedly connected to the first rotating shaft 11, and the other end of the first connecting rod 5 is hinged on the pin 14; one end of the second connecting rod 7 is connected to the third corner point of the triangular crank 6 through a first ball joint 15.

[0024] The actuator III includes a plate-type simulation blade 16, a plate-type simulation linkage ring 17, a second fixed support 18, a third fixed support 19, a fourth fixed support 20, an optical axis 21, a linear bearing 22, a guide pin 23, a transfer block 24, a second base plate 25 and a rocker arm 26; the second fixed support 18 is fixedly mounted on the upper surface of the second base plate 25; a third rotating shaft 27 is vertically installed on the top of the second fixed support 18, and the plate-type simulation blade 16 is fixedly connected to the third rotating shaft 27; the third fixed support 19 and the fourth fixed support 20 are fixedly mounted on the upper surface of the second base plate 25, and the optical axis 21 is horizontally fixedly connected between the third fixed support 19 and the fourth fixed support 20 The linear bearing 22 is sleeved on the optical axis 21, and the linear bearing 22 has both rotational freedom and axial translational freedom relative to the optical axis 21; the lower end of the plate-type simulation linkage ring 17 is fixedly connected to the linear bearing 22; the guide pin 23 is fixedly arranged on the top of the plate-type simulation linkage ring 17, and the adapter block 24 is sleeved on the guide pin 23, and the adapter block 24 has linear sliding freedom relative to the guide pin 23; the upper end of the plate-type simulation linkage ring 17 is connected to the other end of the second connecting rod 7 through the second ball joint 28; one end of the rocker arm 26 is fixedly connected to the third rotating shaft 27, and the other end of the rocker arm 26 is connected to the adapter block 24 through the third ball joint 29.

[0025] The measuring assembly IV includes a first angle sensor 30, a first sensor bracket 31, a second angle sensor 32, a second sensor bracket 33, a third angle sensor 34, a third sensor bracket 35, a first gear 36, a second gear 37, a fourth rotating shaft 38, a third bearing seat 39 and a fourth bearing seat 40; the first sensor bracket 31 is fixedly mounted on the upper surface of the first base plate 9, the first angle sensor 30 is horizontally fixed on the first sensor bracket 31, and the measuring axis of the first angle sensor 30 is coaxially fixedly connected with the second rotating shaft 13; the second sensor bracket 33 is fixedly mounted on the top of the second fixed support 18, the second angle sensor 32 is vertically fixed on the second sensor bracket 33, and the second angle The measuring axis of the sensor 32 is coaxially fixedly connected to the third rotating shaft 27; the first gear 36 is coaxially sleeved on the linear bearing 22, and the first gear 36 is fixedly connected to the plate-type analog linkage ring 17; the third bearing seat 39 and the fourth bearing seat 40 are fixedly mounted on the upper surface of the second base plate 25, the fourth rotating shaft 38 is passed through the third bearing seat 39 and the fourth bearing seat 40, the second gear 37 is fixedly mounted on the fourth rotating shaft 38, and the second gear 37 is meshed with the first gear 36; the third sensor bracket 35 is fixedly mounted on the upper surface of the second base plate 25, the third angle sensor 34 is horizontally fixedly mounted on the third sensor bracket 35, and the measuring axis of the third angle sensor 34 is coaxially fixedly connected to the fourth rotating shaft 38.

[0026] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0027] First, start the motor 1 to drive the screw 2 to rotate synchronously. The rotational motion of the screw 2 will be synchronously converted into the linear motion of the nut slider 3 along the slide rail support 4, and then the moving nut slider 3 will drive the first connecting rod 5 to move in space, which can drive the triangular crank 6 and the second rotating shaft 13 to rotate synchronously.

[0028] During the rotation of the triangular crank 6, the second connecting rod 7 will be further driven to move in space. The second connecting rod 7 can further drive the plate-type simulation linkage ring 17 to rotate and translate along the optical axis 21, and then the plate-type simulation linkage ring 17 drives the rocker arm 26 and the third rotating shaft 27 to rotate synchronously, and finally the rotating third rotating shaft 27 drives the plate-type simulation blade 16 to adjust the angle.

[0029] During the synchronous rotation of the triangular crank 6 and the second rotating shaft 13 , the second rotating shaft 13 will drive the measuring shaft of the first angle sensor 30 to rotate synchronously, so that the rotation angles of the second rotating shaft 13 and the triangular crank 6 can be measured in real time.

[0030] During the synchronous rotation of the rocker arm 26 and the third rotating shaft 27 , the third rotating shaft 27 will drive the measuring shaft of the second angle sensor 32 to rotate synchronously, thereby being able to measure the rotation angles of the third rotating shaft 27 and the plate-type simulated blade 16 in real time.

[0031] During the rotation of the plate-type analog linkage ring 17 along the optical axis 21, the first gear 36 will be driven to rotate synchronously, and then the second gear 37 meshing therewith will be driven to rotate synchronously. The fourth rotating shaft 38 will be driven to rotate synchronously through the second gear 37. The fourth rotating shaft 38 will drive the measuring shaft of the third angle sensor 34 to rotate synchronously, so that the rotation angle of the plate-type analog linkage ring 17 along the optical axis 21 can be measured in real time.

[0032] The solutions in the embodiments are not intended to limit the protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the protection scope of the present invention.

Claims

1. A stationary blade adjustment mechanism motion simulation test bench, characterized in that: It includes a driving component, a transmission component, an execution component and a measuring component; the driving component is connected to the transmission component, the transmission component is connected to the execution component; the measuring component is arranged on the transmission component and the execution component.

2. The motion simulation test bench for a stationary blade adjustment mechanism according to claim 1 is characterized in that: The driving assembly includes a motor, a lead screw, a nut slider and a slide rail support; the motor is horizontally fixed at one end of the slide rail support; one end of the lead screw is rotatably connected to the other end of the slide rail support through a ball bearing, and the other end of the lead screw is coaxially fixed to the power output shaft of the motor, and the lead screw and the slide rail support are distributed in parallel; the nut slider is mounted on the lead screw, and the nut slider is in sliding contact with the slide rail support, and the nut slider has only linear movement freedom relative to the slide rail support.

3. The motion simulation test bench for stationary blade adjustment mechanism according to claim 2 is characterized in that: The transmission assembly includes a first connecting rod, a triangular crank, a second connecting rod, a first fixed support and a first base plate; a first bearing seat is fixedly installed on the top of the nut slider, and a first rotating shaft is installed in the first bearing seat; the first fixed support is fixedly installed on the upper surface of the first base plate, a second bearing seat is fixedly installed on the top of the first fixed support, and a second rotating shaft is installed in the second bearing seat; the first corner point of the triangular crank is fixedly connected to the second rotating shaft, and a pin is installed at the second corner point of the triangular crank; one end of the first connecting rod is fixedly connected to the first rotating shaft, and the other end of the first connecting rod is hinged on the pin; one end of the second connecting rod is connected to the third corner point of the triangular crank through a first ball joint.

4. The motion simulation test bench for a stationary blade adjustment mechanism according to claim 3 is characterized by: The execution assembly includes a plate-type simulation blade, a plate-type simulation linkage ring, a second fixed support, a third fixed support, a fourth fixed support, an optical axis, a linear bearing, a guide pin, a switching plug, a second base plate and a rocker arm; the second fixed support is fixedly mounted on the upper surface of the second base plate; a third rotating shaft is vertically mounted on the top of the second fixed support, and the plate-type simulation blade is fixedly connected to the third rotating shaft; the third fixed support and the fourth fixed support are fixedly mounted on the upper surface of the second base plate, and the optical axis is horizontally fixedly connected between the third fixed support and the fourth fixed support; the straight The linear bearing is sleeved on the optical axis, and the linear bearing has both rotational freedom and axial translational freedom relative to the optical axis; the lower end of the plate-type simulation linkage ring is fixedly connected to the linear bearing; the guide pin is fixedly arranged on the top of the plate-type simulation linkage ring, and the adapter block is sleeved on the guide pin, and the adapter block has linear sliding freedom relative to the guide pin; the upper end of the plate-type simulation linkage ring is connected to the other end of the second connecting rod through a second ball joint; one end of the rocker arm is fixedly connected to the third rotating shaft, and the other end of the rocker arm is connected to the adapter block through a third ball joint.

5. The motion simulation test bench for stationary blade adjustment mechanism according to claim 4 is characterized by: The measuring assembly includes a first angle sensor, a first sensor bracket, a second angle sensor, a second sensor bracket, a third angle sensor, a third sensor bracket, a first gear, a second gear, a fourth rotating shaft, a third bearing seat and a fourth bearing seat; the first sensor bracket is fixedly mounted on the upper surface of the first base plate, the first angle sensor is horizontally fixedly mounted on the first sensor bracket, and the measuring axis of the first angle sensor is coaxially fixedly connected with the second rotating shaft; the second sensor bracket is fixedly mounted on the top of the second fixed support, the second angle sensor is vertically fixedly mounted on the second sensor bracket, and the measuring axis of the second angle sensor is coaxially fixedly connected with the third rotating shaft; the first gear is coaxially sleeved on the linear bearing, and the first gear is fixedly connected with the plate-type simulation linkage ring; the third bearing seat and the fourth bearing seat are fixedly mounted on the upper surface of the second base plate, the fourth rotating shaft is penetrated on the third bearing seat and the fourth bearing seat, the second gear is fixedly mounted on the fourth rotating shaft, and the second gear is meshed with the first gear; the third sensor bracket is fixedly mounted on the upper surface of the second base plate, the third angle sensor is horizontally fixedly mounted on the third sensor bracket, and the measuring axis of the third angle sensor is coaxially fixedly connected with the fourth rotating shaft.

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