CN111473933B - Multifunctional blade and rotor test bed - Google Patents
Multifunctional blade and rotor test bed Download PDFInfo
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- CN111473933B CN111473933B CN202010345956.0A CN202010345956A CN111473933B CN 111473933 B CN111473933 B CN 111473933B CN 202010345956 A CN202010345956 A CN 202010345956A CN 111473933 B CN111473933 B CN 111473933B
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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Abstract
The invention discloses a multifunctional blade and rotor test bed, which relates to the technical field of high-speed blade vibration detection and comprises a workbench, wherein a dynamic measurement system and a static measurement system are arranged on the workbench, the dynamic measurement system comprises a motor driving mechanism, a sliding bearing mechanism, a rotor mechanism and a measurement mechanism, and the motor driving mechanism comprises a motor bracket and a servo motor; the sliding bearing mechanism comprises a bearing base, a bearing bush and a bearing cover; the rotor mechanism comprises a shaft and a blade disc, and blades are arranged on the blade disc; the measuring mechanism comprises a measuring bracket, and a measuring sensor is arranged on the measuring bracket; the static measurement system comprises a blade clamping piece and a force hammer, wherein a blade to be measured is arranged in the blade clamping piece, a hammering point of the force hammer is a blade crown of the blade to be measured, and an acceleration sensor is fixedly arranged on the deviation knocking side of the blade. The influence of vibration on the blades in different environments is monitored in a dynamic and static combination mode, and the deviation between calculation simulation and actual existence is reduced.
Description
Technical Field
The invention relates to the technical field of high-speed blade vibration detection, in particular to a multifunctional blade and rotor test bed.
Background
The blade is a key part for converting thermal energy into mechanical energy of a large power machine. When a steam turbine unit operates, the steam turbine blade is easily damaged in the operation process due to the influence of severe environments such as high pressure, high temperature, high rotating speed, a wet steam area and the like and the combined action of centrifugal force, airflow exciting force, vibration and water drop high-speed erosion, so that steam turbine accidents are caused. Among them, the turbine accidents caused by the damage of the turbine blades due to the vibration account for the most part of the total accidents.
From the existing literature, a great gap exists between the theoretical result of the research on the anti-vibration performance of the shrouded blade and the practical engineering application, and the shafting boundary condition is complex during the operation of the unit, so that great deviation exists between the calculation simulation and the actual situation, and the solution is needed urgently.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a multifunctional blade and rotor test bed, which monitors the influence of vibration on blades in different environments in a dynamic and static combination mode and reduces the deviation between calculation simulation and actual existence.
In order to achieve the purpose, the invention provides the following technical scheme:
the multifunctional blade and rotor test bed comprises a workbench, wherein a dynamic measurement system and a static measurement system are arranged on the workbench, and the dynamic measurement system comprises a motor driving mechanism, a sliding bearing mechanism, a rotor mechanism and a measurement mechanism; the motor driving mechanism comprises a motor bracket and a servo motor arranged on the motor bracket; the sliding bearing mechanism comprises a bearing base, a bearing bush and a bearing cover; the rotor mechanism comprises a shaft and a blade disc arranged on the shaft, and blades are arranged on the blade disc; the measuring mechanism comprises a measuring bracket, and a measuring sensor is arranged on the measuring bracket; the static measurement system comprises a blade clamping piece and a force hammer, wherein the blade to be measured is arranged in the blade clamping piece, a hammering point of the force hammer is a blade crown of the blade to be measured, and an acceleration sensor is fixedly arranged on one side of the blade, which is far away from a knocking point; the servo motor is fixed on the motor bracket through a bolt, and an output shaft of the servo motor is fixedly connected with the shaft through a coupler; the bearing bases are arranged in two groups, the two groups of bearing bases are respectively arranged at two ends of the length of the shaft, the bearing bush is fixedly arranged at the upper end of the bearing base through a bearing cover, and the shaft is provided with the bearing bush in a penetrating way and is pivoted on the two groups of bearing bases; the measuring support comprises a first support and a second support, a plurality of groups of the first supports are arranged on the first support, the first supports are respectively and uniformly arranged on two sides of the blade disc, a first eddy current sensor and a photoelectric sensor are arranged on the first supports, the first eddy current sensor is arranged right opposite to the shaft, the photoelectric sensor is arranged right opposite to the blades on the blade disc, a light reflecting strip is arranged on the blade disc and is arranged between two adjacent blades (9), and the light reflecting strip is arranged right opposite to the photoelectric sensor; the second support is arranged at a position close to the blade disc, a second eddy current sensor is arranged on the second support, and the second eddy current sensor is arranged right opposite to the blade.
The invention is further configured to: the bearing comprises a bearing cover and is characterized in that a first oil filling hole is formed in the bearing cover, an oil groove and a second oil filling hole are formed in the bearing bush, the second oil filling hole is formed in the bearing bush in the radial direction, the first oil filling hole and the second oil filling hole are communicated with the oil groove, and the first oil filling hole is connected with a hydraulic pump through an oil filling pipe.
The invention is further configured to: the bearing cover is fixedly arranged on the bearing base through bolts.
The invention is further configured to: offer the mounting groove that is used for inserting the blade on the leaf disc, a plurality of has been seted up to the mounting groove, and each mounting groove is along leaf disc week side evenly distributed, be provided with the clamp plate that is used for fixed blade in the mounting groove.
The invention is further configured to: the wedge-shaped block is embedded in the mounting groove, and the size of the inner cavity space of the mounting groove is changed.
The invention is further configured to: the blade is close to leaf dish one side and is provided with the fixed block, set up first stopper on the mounting groove diapire, the fixed block is close to mounting groove diapire one side and has seted up first fixed orifices, first stopper inlays to be established form the setting of pegging graft in the first fixed orifices. A second fixing hole is formed in one side, close to the pressing plate, of the fixing block, a second limiting block is arranged on one side, close to the fixing block, of the pressing plate, and the second limiting block is inserted in the second fixing hole to form inserting connection.
The invention is further configured to: the first support is provided with a plurality of first mounting holes, the first mounting holes are distributed along the periphery of the shaft, and the first mounting holes are uniformly distributed on the first support.
The invention is further configured to: the second support comprises a supporting rod and a semicircular mounting seat, the semicircular mounting seat is opposite to the blades on the blade disc, a second mounting hole is formed in the semicircular mounting seat, a plurality of second mounting holes are formed in the second mounting holes, and the second mounting holes are uniformly distributed on the semicircular mounting seat.
The invention is further configured to: and the semicircular mounting seat is provided with third mounting holes, the third mounting holes are at least provided with two groups, and the gap distance between every two adjacent third mounting holes is the same as that between the same blades.
The invention is further configured to: the fixed slot has been seted up to the workstation upper surface, the fixed slot is followed workstation length direction is seted up, the fixed slot is provided with a plurality of, each the fixed slot is the interval each other and evenly distributed sets up the upper surface of workstation.
In conclusion, the invention has the following beneficial effects:
1. the method adopts a dynamic and static combination mode, comprehensively monitors the blade vibration response of the shrouded blade in rotation and static state, and measures the vibration condition of the blade at different working rotating speeds, thereby reducing the difference between the theoretical research of the anti-vibration performance of the shrouded blade and the practical application of engineering;
2. the vibration measurement of the discontinuously mounted blades is realized by mounting the blades in different mounting grooves on the blade disc; in addition, by installing blades with different specifications and shapes, vibration measurement of different blades is realized, and the application range of the test bed is expanded;
3. through changing the axle bush of different specifications, change the clearance between axle and the axle bush, change the oil film thickness on the outer wall when the axle rotates, realize this test bench and realize the vibration response to unbalanced rotor under different oil film thickness conditions.
Drawings
FIG. 1 is a schematic view of a dynamic measurement system and a static measurement system of a multi-functional blade and rotor test stand of the present invention;
FIG. 2 is a schematic view of a bearing mount structure of the multi-function blade and rotor test stand of the present invention;
FIG. 3 is a schematic view of a bushing mechanism of the multi-function blade and rotor test stand of the present invention;
FIG. 4 is a schematic view of a bearing cap structure of the multifunctional blade and rotor test stand of the present invention;
FIG. 5 is a schematic cross-sectional view of a sliding bearing mechanism of the multi-function blade and rotor test stand of the present invention;
FIG. 6 is a schematic structural view of a rotor mechanism of the multifunctional blade and rotor test stand of the present invention;
FIG. 7 is a schematic view of a blisk configuration of the multi-function blade and rotor test stand of the present invention;
FIG. 8 is a schematic view of a wedge block exploded view of the multi-function blade and rotor test stand of the present invention;
FIG. 9 is a schematic view of a blade exploded view of the multi-function blade and rotor test stand of the present invention;
FIG. 10 is a schematic view of a multi-function blade and rotor test stand platen configuration of the present invention;
FIG. 11 is a schematic view of a first support structure of the multi-function blade and rotor test stand of the present invention;
FIG. 12 is a schematic view of a second bracket structure of the multifunctional blade and rotor test stand of the present invention.
Reference numerals: 1. a work table; 2. a motor bracket; 3. a servo motor; 4. a bearing mount; 41. an oil return groove; 42. an oil return hole; 43. a bearing bush mounting groove; 5. bearing bushes; 51. a second oil filler hole; 52. an oil ditch; 6. a bearing cap; 61. a first oil filler hole; 7. a shaft; 71. expanding sleeves; 8. a leaf disc; 81. mounting grooves; 82. a first stopper; 83. a wedge block; 9. a blade; 91. a fixed block; 92. a first fixing hole; 93. a second fixing hole; 10. pressing a plate; 101. a second limiting block; 11. a first bracket; 111. a first mounting hole; 12. a second bracket; 121. a support bar; 122. a semicircular mounting seat; 123. a second mounting hole; 124. a third mounting hole; 13. flat tongs; 14. a force hammer; 15. and fixing the grooves.
Detailed Description
The invention provides a multifunctional blade and rotor test bed, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the data so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such system, article, or apparatus.
Referring to the attached figure 1, the multifunctional blade and rotor test bed comprises a workbench 1, wherein a dynamic measurement system and a static measurement system are arranged on the workbench 1, and the dynamic measurement system comprises a motor driving mechanism, a sliding bearing mechanism, a rotor mechanism and a measurement mechanism.
The workbench 1 comprises a working panel and supporting legs arranged on the bottom wall of the working panel. The working panel is a rectangular panel. The last fixed slot 15 of having seted up of work panel, fixed slot 15 is seted up along work panel length direction, and fixed slot 15 is provided with a plurality of, and each fixed slot 15 mutual interval and evenly distributed set up at the work panel upper surface. The cross section of the fixing groove 15 is a T-shaped groove.
The motor driving mechanism comprises a motor support 2 and a servo motor 3 arranged on the motor support 2. The motor bracket 2 is fixedly arranged on the motor bracket 2 through a trapezoidal bolt. Servo motor 3 passes through the bolt fastening and sets up on motor support 2, and servo motor 3 level sets up on motor support 2, helps guaranteeing servo motor 3 even running. The servo motor 3 is arranged to control the rotating speed of the whole device conveniently.
With reference to fig. 2 to 5, the sliding bearing mechanism includes a bearing base 4, a bearing bush 5 and a bearing cap 6. The sliding bearing bases 4 are provided with two groups, and the two groups of sliding bearing bases 4 are embedded in the fixing groove 15 through trapezoidal bolts and fixedly arranged on the workbench 1. The two groups of sliding bearing bases 4 are arranged in parallel and along the horizontal direction to form a shaft 7 supporting frame. The axle bush 5 is provided with two sets ofly, and axle bush mounting groove 43 has been seted up to bearing base 4 upper end, and two sets of axle bushes 5 are placed respectively in the axle bush mounting groove 43 of two sets of slide bearing bases 4, then closes bearing cap 6 lid on slide bearing base 4, compresses tightly axle bush 5 to fix bearing cap 6 on bearing base 4 through the bolt, realize the fixed mounting of axle bush 5.
An oil return groove 41 is further formed in the bearing base 4, and the oil return groove 41 is an arc-shaped groove. Two sets of oil return grooves 41 are formed, the two sets of oil return grooves 41 are respectively arranged on two sides of the two bearing bush mounting groove 43, and oil return holes 42 are formed in the bottom wall of the oil return grooves 41. The top end of the bearing cover 6 is provided with a first oil hole 61, and the outer surface of the bearing bush 5 is provided with an oil groove 52 and a second oil hole 51. The first oil injection is arranged along the vertical direction, and the first oil injection hole 61 is opposite to the oil groove 52 and is communicated with the oil groove. The second oil filling hole 51 is opened along the radial direction of the bearing shell 5, the second oil filling hole 51 penetrates through the radial direction of the bearing shell 5, and the second oil filling hole 51 is communicated with the oil groove 52. The first filler hole 61 is provided in communication with the hydraulic pump through a filler pipe. The oil return hole 42 is connected with the hydraulic pump through an oil return pipe to realize an oil return function.
Referring to fig. 6, the rotor mechanism includes a shaft 7 and a blisk 8 provided on the shaft 7. Axle 7 wears to establish axle bush 5 pin joint and sets up on two sets of bearing bases 4, and axle 7 is close to servo motor 3 one end and passes through the fixed setting of shaft coupling 7 ware on servo motor 3's output shaft 7, and leaf disc 8 is fixed on axle 7 through the cover 71 that rises, makes things convenient for the experimenter to install the leaf disc 8 of different specifications and tests.
The measuring mechanism comprises a measuring support, and a measuring sensor is arranged on the measuring support. The measuring support comprises a first support 11 and a second support 12, the first support 11 is provided with a plurality of groups, and the first supports 11 of each group are respectively arranged on two sides of the blade disc 8. The measuring sensor comprises a first eddy current sensor and a photoelectric sensor, the first support 11 is provided with the first eddy current sensor, and the first eddy current sensor is arranged on the right counter shaft 7. The photoelectric sensor is arranged right opposite to the blade disc 8, the reflecting strips are attached to the blade disc 8 and arranged right in the middle of the two adjacent blades 9, and the reflecting strips are arranged right opposite to the photoelectric sensor. And a second eddy current sensor is arranged on the second support 12 and is opposite to the blade 9.
In order to enlarge the measuring range of the test stand. With reference to fig. 7 to 10, a mounting groove 81 is provided on the vane plate 8, the mounting groove 81 is provided with a plurality of grooves, each of the mounting grooves 81 is evenly distributed along the circumferential side of the vane plate 8, and a pressing plate 10 for fixing the vane 9 is provided in the mounting groove 81. When the blades 9 are installed, the blades 9 are inserted into the installation grooves 81, the blades 9 are pressed through the pressing plates 10, the pressing plates 10 are fixed on the blade disc 8 through the screws penetrating through the pressing plates 10, and the blades 9 are fixed. In the actual use process, experimenters can change the blade 9 of different specifications in mounting groove 81 and carry out the experiment, enlarge the application scope of test bench.
Further, a wedge block 83 is arranged in the mounting groove 81, and a fixing block 91 is arranged on one side of the blade 9 close to the blade disc 8. Inlay through mutually supporting the stack with wedge 83 and establish in mounting groove 81, change mounting groove 81's inner chamber space size to be convenient for the experimenter to install different specification blades 9 and get into mounting groove 81, improve bladed disk 8's use convenience. Integrated into one piece is provided with first stopper 82 on the mounting groove 81 diapire, and first fixed orifices 92 have been seted up to fixed block 91 near mounting groove 81 diapire one side, and first stopper 82 inlays to be established in first fixed orifices 92 during the installation. The fixing block 91 is provided with a second fixing hole 93 close to one side of the pressing plate 10, the pressing plate 10 is provided with a second limiting block 101 close to one side of the fixing block 91 in a protruding forming mode, and the second limiting block 101 is inserted into the second fixing hole 93 to form an inserting connection arrangement. The first limiting block 82 and the second limiting block 101 are respectively inserted into the first limiting hole and the second limiting hole, so that the blade 9 is further stably fixed in the blade disc 8, and the experimental accuracy is improved. In this way, the blade 9 can be conveniently disassembled and assembled by experimenters.
Referring to fig. 11, the first bracket 11 is provided with a plurality of first mounting holes 111, the first mounting holes 111 are distributed along the circumferential side of the shaft 7, and the first mounting holes are uniformly distributed on the first bracket 11. In practical use, an experimenter can install the photoelectric sensor in the first installation hole 111 at the corresponding position on the first bracket 11 according to the actual installation condition of the blade 9 on the blade disc 8. In this embodiment, the first mounting holes 111 of the first bracket 11 are respectively opened at 0 °, 45 °, 90 °, and 135 °, and the angle is an included angle between the axis 7 of the first mounting hole 111 and a horizontal line.
Referring to fig. 12, the second bracket 12 includes a supporting rod 121 and a semicircular mounting seat 122, and the semicircular mounting seat 122 is integrally formed at an upper end of the supporting rod 121. The semicircular installation seat 122 is arranged right opposite to the blades 9 on the blade disc 8, the semicircular installation seat 122 is provided with second installation holes 123, the second installation holes 123 are provided with a plurality of second installation holes 123, and the second installation holes 123 are uniformly distributed on the semicircular installation seat 122. The semicircular mounting seat 122 is further provided with third mounting holes 124, at least two groups of the third mounting holes 124 are formed, and the gap distance between every two adjacent third mounting holes 124 is the same as the gap distance between every two adjacent blades 9. The experimenter can install the second eddy current sensor in the second mounting hole 123 and the third mounting hole 124 at corresponding positions on the second bracket 12 according to the actual installation condition of the blade 9 on the blade disc 8.
The static measuring system comprises a blade 9 clamp, a force hammer 14. In this embodiment, the blade 9 holding member is a flat tongs 13, and the blade 9 to be measured is held and fixed in the flat tongs 13. During the use, the experimenter directly uses power hammer 14 hammering the blade crown of blade 9 that awaits measuring, and it is fixed with acceleration sensor to stand measuring to deviate from through glue paste on hammering point one side by blade 9.
The working principle of the embodiment is as follows:
in practical use, the servo motor 3 is started to drive the shaft 7 and the blade disc 8 to rotate, and the distance change of the shaft 7 in the normal direction is measured through the first eddy current sensor arranged on the first bracket 11 and opposite to the shaft 7, so that a vibration signal of the shaft 7, a center track diagram of the shaft 7 and a vibration signal of the blade 9 are obtained. The photoelectric sensor on the first support 11 is used in cooperation with the light-reflecting strip to measure a rotating speed signal, namely, after the photoelectric sensor receives the reflection of the light-reflecting strip each time, the photoelectric sensor generates a pulse signal of a voltage. In the experiment, a plurality of groups of blades 9 are arranged on the blade disc 8 and rotate at a high speed, collected vibration signals of the blades 9 are dense, and actual vibration of the blades 9 cannot be calculated through a blade tip timing algorithm. The photoelectric sensor generates a pulse signal when the rotor rotates for one circle, and the vibration signal generated by the corresponding blade 9 in one period can be well distinguished through the pulse signal.
When the bearing bush is used, an experimenter changes different bearing bushes 5 to enable the gaps between the shaft 7 and the bearing bushes 5 to be different, and the thickness of an oil film on the outer wall of the shaft 7 is changed when the shaft rotates. The test bed realizes the vibration response to the unbalanced rotor under the conditions of different oil film thicknesses.
The torsional vibration of the blade 9 is measured by the second eddy current sensor in the third mounting hole 124 of the second bracket 12 through the distance change of the blade 9 sensed by the second eddy current sensor. At the same time, the second eddy current sensor in the second mounting hole 123 of the second bracket 12 is used to detect that the blade 9 is advanced or retarded compared to the case where no vibration occurs, thereby generating a time difference, and the tangential vibration of the blade 9 is calculated from the time difference and the rotor speed.
In the static measurement system, the blade shroud of the blade 9 to be measured is knocked by the force hammer 14 to generate different exciting forces, so that the vibration influence of the different exciting forces on the blade 9 is researched. Meanwhile, in the experimental process, the sheet iron is inserted between the blades 9, the inter-crown gap between the adjacent blades 9 is changed, and the research on the impact of the inter-crown gap on the blades 9 is realized.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The multifunctional blade and rotor test bed is characterized by comprising a workbench (1), wherein a dynamic measurement system and a static measurement system are arranged on the workbench (1), and the dynamic measurement system comprises a motor driving mechanism, a sliding bearing mechanism, a rotor mechanism and a measurement mechanism;
the motor driving mechanism comprises a motor bracket (2) and a servo motor (3) arranged on the motor bracket (2); the sliding bearing mechanism comprises a bearing base (4), a bearing bush (5) and a bearing cover (6); the rotor mechanism comprises a shaft (7) and a blade disc (8) arranged on the shaft (7), and blades (9) are arranged on the blade disc (8); the measuring mechanism comprises a measuring bracket, and a measuring sensor is arranged on the measuring bracket; the static measurement system comprises a blade clamping piece and a force hammer (14), wherein the blade (9) to be measured is arranged in the blade clamping piece, a hammering point of the force hammer (14) is a blade crown of the blade (9) to be measured, and an acceleration sensor is fixedly arranged on the blade (9) deviating from the hammering point;
the servo motor (3) is fixed on the motor bracket (2) through a bolt, and an output shaft of the servo motor (3) is fixedly connected with the shaft (7) through a coupler; the bearing bases (4) are arranged in two groups, the two groups of bearing bases (4) are respectively arranged at two ends of the length of the shaft (7), the bearing bushes (5) are fixedly arranged at the upper end of the bearing bases (4) through bearing covers (6), and the shaft (7) penetrates through the bearing bushes (5) and is pivoted on the two groups of bearing bases (4);
the measuring support comprises a first support (11) and a second support (12), the first support (11) is provided with a plurality of groups, the first supports (11) are respectively and uniformly arranged on two sides of the blade disc (8), a first eddy current sensor and a photoelectric sensor are arranged on the first support (11), the first eddy current sensor is arranged right opposite to the shaft (7), the photoelectric sensor is arranged right opposite to the blades (9) on the blade disc (8), the blade disc (8) is provided with a light reflecting strip, the light reflecting strip is arranged between the adjacent blades (9), and the light reflecting strip is arranged right opposite to the photoelectric sensor; the second support (12) is arranged at a position close to the blade disc (8), a second eddy current sensor is arranged on the second support (12), and the second eddy current sensor is arranged right opposite to the blade (9);
the blade disc (8) is provided with a plurality of mounting grooves (81) for inserting the blades (9), the mounting grooves (81) are uniformly distributed along the peripheral side of the blade disc (8), and the mounting grooves (81) are internally provided with pressing plates (10) for fixing the blades (9);
a fixing block (91) is arranged on one side, close to the blade disc (8), of the blade (9), a first limiting block (82) is arranged on the bottom wall of the mounting groove (81), a first fixing hole (92) is formed in one side, close to the bottom wall of the mounting groove (81), of the fixing block (91), and the first limiting block (82) is embedded in the first fixing hole (92) to form an inserting arrangement; the fixing block (91) is close to one side of the pressing plate (10) and is provided with a second fixing hole (93), one side of the pressing plate (10) close to the fixing block (91) is provided with a second limiting block (101), and the second limiting block (101) is inserted into the second fixing hole (93) to form inserting connection.
2. The multifunctional blade and rotor test bed as claimed in claim 1, wherein the bearing cap (6) is provided with a first oil hole (61), the bearing bush (5) is provided with an oil groove (52) and a second oil hole (51), the second oil hole (51) is radially provided along the bearing bush (5), the first oil hole (61) and the second oil hole (51) are both communicated with the oil groove (52), and the first oil hole (61) is connected with a hydraulic pump through an oil pipe.
3. Multifunctional blade and rotor test stand according to claim 2, characterized in that the bearing cover (6) is arranged on the bearing base (4) by bolting.
4. The multifunctional blade and rotor test bed according to claim 1, characterized in that a wedge block (83) is arranged in the mounting groove (81), and the wedge block (83) is embedded in the mounting groove (81) to change the size of the inner cavity space of the mounting groove (81).
5. The multifunctional blade and rotor test bed as claimed in claim 1, wherein the first bracket (11) is provided with a plurality of first mounting holes (111), the first mounting holes (111) are distributed along the circumferential side of the shaft (7), and the first mounting holes (111) are uniformly distributed on the first bracket (11).
6. The multifunctional blade and rotor test bed as claimed in claim 1, wherein the second bracket (12) comprises a support rod (121) and a semicircular mounting seat (122), the semicircular mounting seat (122) is disposed opposite to the blade (9) on the blade disc (8), a plurality of second mounting holes (123) are formed in the semicircular mounting seat (122), and the second mounting holes (123) are uniformly distributed on the semicircular mounting seat (122).
7. The multifunctional blade and rotor test bed as claimed in claim 6, wherein the semicircular mounting seats (122) are provided with third mounting holes (124), at least two groups of the third mounting holes (124) are provided, and the gap distance between adjacent third mounting holes (124) is the same as the gap distance between the same blades (9).
8. The multifunctional blade and rotor test bed as claimed in claim 1, wherein a fixing groove (15) is formed in the upper surface of the workbench (1), the fixing groove (15) is formed along the length direction of the workbench (1), a plurality of fixing grooves (15) are formed in the fixing groove (15), and the fixing grooves (15) are spaced from each other and are uniformly distributed on the upper surface of the workbench (1).
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| CN202010345956.0A CN111473933B (en) | 2020-04-27 | 2020-04-27 | Multifunctional blade and rotor test bed |
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| CN202010345956.0A CN111473933B (en) | 2020-04-27 | 2020-04-27 | Multifunctional blade and rotor test bed |
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