CN113639950B - Single-rod drawing type vibration table testing device and testing method for representing centrifugal force - Google Patents
Single-rod drawing type vibration table testing device and testing method for representing centrifugal force Download PDFInfo
- Publication number
- CN113639950B CN113639950B CN202111061896.0A CN202111061896A CN113639950B CN 113639950 B CN113639950 B CN 113639950B CN 202111061896 A CN202111061896 A CN 202111061896A CN 113639950 B CN113639950 B CN 113639950B
- Authority
- CN
- China
- Prior art keywords
- clamp
- fixed
- blade
- tension meter
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 238000004088 simulation Methods 0.000 claims abstract description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010998 test method Methods 0.000 claims description 4
- 238000012512 characterization method Methods 0.000 claims 1
- 239000002826 coolant Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000002474 experimental method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a single-rod pull type vibration table testing device and a testing method for representing centrifugal force, which relate to the technical field of test equipment and further comprise a bearing plate, a clamp bearing table, a clamp, a fixing part and a simulation part. The testing device can realize the organic combination of centrifugal force, vibration and centrifugal force and vibration tests, and can efficiently test the comprehensive mechanical properties of the tested object.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a single-rod pull type vibration table testing device and a testing method for representing centrifugal force.
Background
The aeroengine is an extremely complex thermodynamic machine, has extremely huge research and development design cost, needs to invest a great deal of capital and labor cost, relates to various subjects and industries, and is a novel aeroengine, and the development of various industries often needs to be advanced together by technologies, so that the aeroengine is the product which can best embody the national industrial technical level, and is called as the bright bead on an industrial crown. Since the advent of aeroengines, various faults have frequently occurred during development, design and use, wherein the faults caused by the blades are of a great proportion. According to the statistics of the related data, the faults caused by vibration account for about 60% of the faults of the engine, and the faults caused by vibration of the blades account for more than 70% of the vibration faults. For aviation safety, blade vibration failure is the greatest threat to aircraft engine design and operation, and blade type failures often lead to catastrophic flight events, resulting in significant loss of personnel life and property safety. Therefore, many research and production institutions worldwide spend a great deal of money and manpower to study the vibration characteristics of the blades. At present, the vibration characteristic research of the blade is mainly realized through numerical calculation and modal test, and the numerical calculation cost is low, but the processing and the materials of the blade belong to virtual simulation, so that the vibration characteristic of the real and specific blade is difficult to embody. Therefore, the adoption of a real material to carry out a modal test on the electromagnetic vibration table is an important means which must be adopted for blade development.
The prior art only fixes the blade through the clamping part and the fastening screw in the process of clamping, but cannot accurately simulate the influence of centrifugal force on the vibration of the blade. The difficulty of directly developing a vibrating table with a centrifugal force function is great, and even the vibrating table cannot be realized; the test method of the external airflow excitation of the high-speed turntable can simulate the working condition of the blade with centrifugal force vibration in theory, but the whole disc of blade is required to be installed, the test cost is huge, the technical and the requirements of the data measurement of the scheme are extremely complex, and the simulated test conditions are very limited.
Disclosure of Invention
The invention aims to provide a single-rod pull type vibrating table testing device for representing centrifugal force, which has a rapid cooling function, can realize accurate simulation of centrifugal force testing and vibration testing, and can realize the testing device for organically combining the centrifugal force and the vibration testing, and can efficiently inspect the comprehensive mechanical properties of a tested object.
In one aspect, the present invention provides a single rod pull-out vibrating table testing device for characterizing centrifugal force, comprising:
an electromagnetic vibration table (1), a bearing plate (2), a clamp bearing platform (3), a clamp (4), a fixed component (5), a tension meter pedestal (6), a tension meter (7) and a simulation component (8); wherein,
the bearing plate (2) is arranged on the electromagnetic vibration table (1), and the bearing plate (2) is fixedly connected with the table top of the electromagnetic vibration table (1) through eight-hole bolts;
the clamp bearing platform (3) is arranged above the bearing plate (2) in a sliding manner;
the clamp (4) is arranged above the clamp bearing platform (3);
the clamp (4) comprises a male clamping plate (41), a female clamping plate (42) and a blade clamping groove (43);
the male clamping plate (41) is arranged on the clamp bearing platform (3), the female clamping plate (42) is connected above the male clamping plate (41) in a clamping mode, and a blade clamping groove (43) is formed in the female clamping plate (42);
the fixing parts (5) are arranged on two sides of the clamp (4);
the tension meter pedestal (6) is arranged on one side of the clamp bearing platform (3);
the tension meter (7) is arranged on the tension meter pedestal (6), one end of the tension meter (7) faces the direction of the clamp (4), and the other end of the tension meter is provided with the simulation component (8).
Further, a plurality of anti-slip ribs (9) are arranged on the upper surface of the male clamping plate (41).
Further, the fixing part (5) comprises two fixing plates (54), two fixing clamping jaws (51), four transverse buckles (52), two fixing springs (53), a fixing cylinder (55) and a pressing plate (56); wherein,
the two fixing plates (54) are vertically and fixedly arranged on the clamp bearing platform (3);
the two fixed clamping jaws (51) are respectively arranged on two sides of the clamp (4), and the two fixed clamping jaws (51) are both rotatably arranged on the two fixed plates (54);
the four transverse buckles (52) are respectively and fixedly arranged at one ends of the two fixed clamping jaws (51) in pairs, and two ends of the two fixed springs (53) are respectively connected at one ends of the two fixed clamping jaws (51);
the fixed cylinder (55) is arranged on the clamp bearing platform (3), and the pressing plate (56) is arranged at the output end of the fixed cylinder (55).
Further, a U-shaped groove (31) for storing cooling liquid is formed in the clamp bearing platform (3) and used for adjusting the working temperatures of the clamp bearing platform (3) and the electromagnetic vibration table (1).
Further, screw rod slipways (10) are arranged at two ends of the clamp bearing platform (3), and the output ends of the two screw rod slipways (10) are fixedly connected with two ends of the female clamping plate (42) respectively.
Further, the simulation component (8) comprises a supporting seat (81), a baffle plate (82), two supporting plates (83), a turbine (84), a worm (85), a rack (86) and a gear (87);
the supporting seat (81) is fixedly arranged at one end of the tension meter pedestal (6);
the baffle (82) is fixedly arranged above the supporting seat (81);
the two supporting plates (83) are fixedly arranged above the supporting seat (81);
the worm (85) is rotatably arranged between the two support plates (83), the turbine (84) is arranged above the worm (85), and the turbine (84) is meshed with the worm (85);
the rack (86) is arranged above the supporting seat (81) in a sliding manner;
a through hole for sliding the rack (86) is further formed below the baffle (82);
the gear (87) is fixedly arranged at one end of the worm (85), the rack (86) is meshed with the gear (87), and a locking and fixing part (88) is arranged on one side of the baffle (82).
Further, the locking fixing part (88) comprises a rotary handle (881), a rotary table (882), a rotary shaft (883), an air cylinder (884) and an air clamp (885); wherein,
one end of the rotating shaft (883) penetrates through the baffle (82) and then is connected with the turbine (84);
the rotary disc (882) is rotatably arranged at the other end of the rotary shaft (883);
the rotating handle (881) is arranged on the turntable (882);
the cylinder (884) is arranged on the supporting seat (81);
the air clamp (885) is arranged at the output end of the air cylinder (884), and the clamping jaw end of the air clamp (885) faces the direction of the turntable (882).
Further, the simulation component (8) comprises a counter force column (801), a bolt lock (802), a guide rod (803) and a scale bolt hole (804); wherein,
the counterforce column (801) is fixedly arranged on the bearing plate (2);
one end of the guide rod (803) is connected with one end of the tension meter (7);
the scale key holes (804) are arrayed on the guide rod (803);
the bolt lock (802) is respectively and movably connected with a plurality of scale bolt holes (804).
In another aspect, the present invention provides a testing method based on the testing device, including:
one end of a blade tenon is placed into a blade clamping groove (43), a female clamping plate (42) is pressed down to be clamped with a male clamping plate (41), and the end of the blade tenon is clamped and fixed;
the height of the clamp bearing platform (3) is adjusted, a sliding block on the screw rod sliding table (10) is fixedly connected with the clamp (4) to drive the clamp (4) to move up and down to adjust the height, the blade is adjusted to be at the same horizontal position with the tension meter (7), and the clamp (4) is fixed by using the fixing part (5) after the adjustment of the height is completed;
after the fixation is completed, the simulation component (8) is connected with the other end of the blade, and the tension of the blade is adjusted through the simulation component (8), so that centrifugal forces with different intensities are loaded;
after the adjustment is finished, the electromagnetic vibration table (1) is opened to perform vibration test on the bearing plate (2), the clamp (4) and the blades;
and in the test process, cooling is circularly carried out through cooling liquid in the clamp bearing platform 3.
Further, the method further comprises the following steps:
after the blade tenons are placed in the blade clamping grooves (43), the fixed air cylinders (55) move to drive the pressing plates (56) to move to press down the female clamping plates (42), and the female clamping plates (42) press down to clamp the blade clamping grooves (43);
after the female clamping plate (42) is pressed down, the upper ends of the two fixed clamping jaws (51) are driven to be folded from two sides to the middle to a vertical state by the aid of the shrinkage tension of the fixed springs (53), the upper surfaces of the female clamping plate (42) are buckled by the upper ends of the two fixed clamping jaws (51), the other ends of the two fixed clamping jaws (51) are inwards tensioned by the aid of the shrinkage tension of the fixed springs (53), and then the lower sides of the female clamping plate (42) are buckled by the aid of the transverse buckles (52) arranged below the two fixed clamping jaws (51), so that the fixture (4) is fixed;
after the test is finished, the fixed air cylinder (55) drives the pressing plate (56) to move upwards, and the pressing plate (56) does not press down the female clamping plate (42) any more, so that the fixation of the two fixed clamping jaws (51) to the clamp (4) is released;
the loading of centrifugal forces of different intensities comprises: after one end of the tension meter 7 is connected with one end of the rack (86), simulating centrifugal forces with different magnitudes according to the magnitude of the moving distance of the rack (86), and acquiring the magnitude of the centrifugal force through reading on the tension meter (7); or comprises: the guide rod (803) pulls towards the opposite direction of the tension meter (7), after the numerical value on the tension meter (7) is set, the bolt lock (802) is inserted into the scale bolt hole (804) for fixing, and after the vibration test is finished, the bolt lock (802) is pulled out for canceling the fixing.
Compared with the prior art, the invention has the beneficial effects that:
(1) When the device works, one end of the blade tenon is placed into the blade clamping groove, the female clamping plate is pressed down to enable the male clamping plate to be clamped with the female clamping plate, the female clamping plate and the male clamping plate clamp and fix the blade tenon at the same time, the height of the clamp bearing platform is adjusted to enable the clamp bearing platform to be connected with the simulation part in a matched mode, after the height adjustment is finished, the fixing part is used for fixing the clamp, the simulation part is connected with the other end of the blade after the fixing is finished, the tension of the blade is adjusted through the simulation part, so that centrifugal forces with different intensities are simulated, after all adjustments are finished, the electromagnetic vibration table is opened to perform vibration test on the bearing plate and the clamp and the blade arranged on the bearing plate, the strength and the rigidity of the clamp are high enough to enable the clamp to not to resonate with the blade, vibration test requirements to be met, centrifugal force and vibration test are simulated simultaneously through a simple material device, test time is shortened, and test cost is saved.
(2) Meanwhile, the testing device can realize the organic combination of centrifugal force, vibration and centrifugal force and vibration tests, and can realize the high-efficiency investigation of the comprehensive mechanical properties of the tested object.
(3) When the invention works, the sliding displacement of the blade in the vibration process is prevented by the design of the plurality of anti-slip ribs, so that the experimental precision and the experimental data precision are ensured.
(4) When the embodiment 1 of the invention works, after one end of the tension meter is connected with one end of the rack, the worm meshed with the worm wheel is driven to rotate through the rotation of the worm wheel, the gear is driven to rotate during rotation of the worm wheel, then the rack meshed with the gear is driven to slide, the rack slides away from the tension meter, so that one end of the tension meter is pulled, centrifugal forces of different magnitudes are simulated according to the magnitude of the moving distance of the rack, the magnitude of the centrifugal force in a test is effectively observed through the readings on the tension meter, and the magnitude of the centrifugal force is required to be continuously adjusted due to the fact that different centrifugal forces are simulated in the test process.
(5) When the device works, the rotation of the turntable is stopped after the centrifugal force value is regulated, at the moment, the air clamp is driven by the air cylinder output end to rise to a proper position of the turntable, the air clamp output end works to clamp and fix the turntable, the clamping and fixing of the turntable is released by the air clamp after the vibration test is finished, the air clamp is driven by the air cylinder output end to vertically move downwards to a position slightly lower than the turntable to stop, and the turntable is prevented from rotating in the experimental process to influence experimental data, so that the experimental precision is ensured.
(6) The invention designs the U-shaped groove 31 in the clamp bearing platform 3, so that the cooling liquid can pass through the clamp bearing platform 3 in a larger area, the temperature of the clamp bearing platform 3 and the electromagnetic vibration table 1 is reduced in time, the quick temperature control is realized, and the service life of the test device is prolonged.
(7) During operation, after the blade tenon one end centre gripping of blade is inside anchor clamps 4 before starting vibration experiment, because the blade most all has certain radian, then need adjust the blade to keep same horizontal position with the tensiometer 7 before vibration experiment, the slider on the lead screw slip table 10 carries out fixed connection with anchor clamps 4 and drives anchor clamps 4 and reciprocate and carry out the adjustment of height this moment, adjust the blade to keep same horizontal position with the tensiometer 7, the slider on the lead screw slip table 10 stops the slip in order to keep stable, thereby avoid experimental error great, the accuracy of experiment has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;
fig. 2 is a schematic perspective view of embodiment 2 of the present invention;
FIG. 3 is a cross-sectional view of the clamp table of the present invention;
fig. 4 is a schematic structural view of a simulation member 8 of embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a simulation member 8 of embodiment 2 of the present invention;
FIG. 6 is a schematic view of the structure of the fixed latch member according to the present invention in a first operating state;
FIG. 7 is a schematic view of a second operational state structure of the fixed latch member of the present invention;
FIG. 8 is a schematic view of an exploded view of a first operational state of a portion of the structure of a stationary component of the present invention;
FIG. 9 is a schematic view of an exploded construction of a second operative state of a portion of the structure of the stationary component of the present invention;
FIG. 10 is a schematic view of the overall structure of the fixing member of the present invention;
fig. 11 is a schematic structural view of the clamp of the present invention.
Reference numerals:
1. an electromagnetic vibration table; 2. a receiving plate; 3. a clamp bearing platform; 31. a U-shaped groove; 4. a clamp; 41. a male splint; 42. a female splint; 43. blade clamping grooves; 5. a fixing member; 51. fixing the clamping jaw; 52. a transverse buckle; 53. a fixed spring; 54. a fixing plate; 55. a fixed cylinder; 56. a pressing plate; 6. a tension meter pedestal; 7. a tension meter; 8. a simulation component; 9. an anti-slip ridge; 10. a screw rod sliding table; 81. a support base; 82. a baffle; 83. a support plate; 84. a turbine; 85. a worm; 86. a rack; 87. a gear; 88. locking the fixed part; 881. rotating the handle; 882. a turntable; 883. a rotating shaft; 884. a cylinder; 885. an air clamp; 801. a reaction column; 802. a latch; 803. a guide rod; 804. scale bolt holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1 to 11, embodiment 1 of the present invention provides a single-rod pull type vibration table testing device for characterizing centrifugal force, which comprises an electromagnetic vibration table 1, and further comprises a receiving plate 2, a clamp bearing table 3, a clamp 4, a fixing component 5, a tensiometer pedestal 6, a tensiometer 7 and a simulation component 8, wherein the receiving plate 2 is arranged on the electromagnetic vibration table 1, the receiving plate 2 is fixedly connected with the table top of the electromagnetic vibration table 1 through eight-hole bolts, the clamp bearing table 3 is slidingly arranged above the receiving plate 2, the clamp 4 is arranged above the clamp bearing table 3, the clamp 4 comprises a male clamping plate 41, a female clamping plate 42 and a blade clamping groove 43, the male clamping plate 41 is arranged on the clamp bearing table 3, the female clamping plate 42 is in snap connection with the male clamping plate 41, the blade clamping groove 43 is formed in the female clamping plate 42, the fixing component 5 is arranged on two sides of the clamp 4, the tensiometer pedestal 6 is arranged on one side of the clamp bearing table 3, the tensiometer 7 is arranged on the tensiometer 6, one end of the tensiometer pedestal 7 faces the clamp bearing table 4, and the other end of the simulation component 7 is arranged on the tensiometer pedestal 8.
Advantageously, a plurality of anti-slip ribs 9 are provided on the upper surface of the male clamping plate 41.
During operation, the design of a plurality of anti-slip ribs 9 increases the friction force between the anti-slip ribs and the tenons of the blades, and the sliding displacement of the blades in the vibration process is prevented, so that the precision of experiments and the precision of experimental data are ensured, and one end of each blade is placed into the clamp 4 for clamping.
Specifically, the fixing component 5 includes two fixing plates 54, two fixing clamping jaws 51, four transverse buckles 52 and two fixing springs 53, two fixing plates 54 are all vertically and fixedly arranged on the fixture bearing platform 3, two fixing clamping jaws 51 are respectively arranged on two sides of the fixture 4, two fixing clamping jaws 51 are respectively and rotatably arranged on two fixing plates 54, four transverse buckles 52 are respectively and fixedly arranged at one ends of the two fixing clamping jaws 51, two ends of the fixing springs 53 are respectively connected to one ends of the two fixing clamping jaws 51, the fixing cylinder 55 is arranged on the fixture bearing platform 3, and the pressing plate 56 is arranged at the output end of the fixing cylinder 55.
Preferably, the inside of the fixture bearing platform 3 is provided with a U-shaped groove 31 for storing cooling liquid.
During operation, high heat is easy to form in the vibration process, the service life of test instruments can be influenced, and the U-shaped groove 31 in the clamp bearing platform 3 is designed, so that cooling liquid can pass through the clamp bearing platform 3 in a larger area, the working temperatures of the clamp bearing platform 3 and the electromagnetic vibration table 1 are timely reduced, and the service life of the test device is prolonged. And in the test process, cooling is circularly carried out through cooling liquid in the clamp bearing platform 3.
Specifically, the two ends of the fixture bearing platform 3 are respectively provided with a screw rod sliding table 10, and the output ends of the two screw rod sliding tables 10 are respectively and fixedly connected with the two ends of the female clamping plate 42.
As shown in fig. 4, the simulation component 8 includes a supporting seat 81, a baffle 82, two supporting plates 83, a turbine 84, a worm 85, a rack 86 and a gear 87, the supporting seat 81 is fixedly arranged at one end of the tensiometer pedestal 6, the baffle 82 is fixedly arranged above the supporting seat 81, two supporting plates 83 are fixedly arranged above the supporting seat 81, the worm 85 is rotatably arranged between the two supporting plates 83, the turbine 84 is arranged above the worm 85, the turbine 84 is meshed with the worm 85, the rack 86 is slidably arranged above the supporting seat 81, a through hole for the rack 86 to slide is further formed below the baffle 82, the gear 87 is fixedly arranged at one end of the worm 85, the rack 86 is meshed with the gear 87, and one side of the baffle 82 is provided with a locking fixing component 88.
When the embodiment 1 of the invention works, after one end of the tension meter 7 is connected with one end of the rack 86, the worm 85 meshed with the worm wheel 84 is driven to rotate through the rotation of the worm wheel 84, the worm 85 drives the gear 87 to rotate during rotation, then the rack 86 meshed with the gear 87 is driven to slide, the rack 86 slides away from the tension meter 7, thereby pulling one end of the tension meter 7, simulating centrifugal forces of different magnitudes according to the moving distance of the rack 86, and effectively observing the magnitudes of the centrifugal forces in the test through the readings on the tension meter 7.
Specifically, the locking fixing member 88 includes a rotating handle 881, a rotating disc 882, a rotating shaft 883, an air cylinder 884 and an air clamp 885, one end of the rotating shaft 883 penetrates through the baffle 82 and then is connected with the turbine 84, the rotating disc 882 is rotatably disposed at the other end of the rotating shaft 883, the rotating handle 881 is disposed on the rotating disc 882, the air cylinder 884 is disposed on the supporting seat 81, the air clamp 885 is disposed at the output end of the air cylinder 884, and the clamping jaw end of the air clamp 885 faces the rotating disc 882.
During operation, stop carousel 882 rotation after finishing adjusting centrifugal force numerical value, the gas clamp 885 is driven to the proper position of carousel 882 to the cylinder 884 output this moment, and gas clamp 885 output work, and with carousel 882 centre gripping fixed, vibration test is accomplished the back, and gas clamp 885 releases the centre gripping fixed to carousel 882, and the vertical downwardly moving of gas clamp 885 to a bit below carousel 882 department stop is driven to the cylinder 884 output, prevents that carousel 882 from taking place to rotate in the experimentation and influencing experimental data to the accuracy of experiment has been guaranteed.
Example 2
As shown in fig. 2 and fig. 5, embodiment 2 of the present invention provides a single-rod pull-type vibration table testing device for characterizing centrifugal force, which is different from embodiment 1 in that the simulation component 8 includes a reaction column 801, a latch 802, a guide rod 803 and a scale key hole 804, the reaction column 801 is fixedly disposed on the receiving plate 2, one end of the guide rod 803 is connected with one end of the tension meter 7, a plurality of scale key holes 804 are arrayed on the guide rod 803, and the latch 802 can be movably connected with a plurality of scale key holes 804 respectively.
During operation, the guide rod 803 pulls towards the reverse direction of the tension meter 7, the numerical value on the tension meter 7 is observed, after the numerical value is proper, the bolt lock 802 is inserted into the scale bolt hole 804 to be fixed, after the vibration test is finished, the bolt lock 802 is pulled out to cancel the fixation, the numerical value is convenient to adjust in the next test, the device is simple and easy to realize, the cost is low, the tension meter 7 is used, the test data is convenient to view, and the simulated centrifugal force process is visualized.
Example 3
This example provides a test method for a vibrating table test device that characterizes centrifugal force based on the single rod pull of examples 1 and 2.
During operation, put into blade tenon one end in blade centre gripping groove 43, push down female splint 42 and make public splint 41 and female splint 42 block, female splint 42 and public splint 41 carry out the centre gripping with the blade tenon end fixed simultaneously, adjust the high convenience blade of anchor clamps cushion cap 3 and tensiometer 7 and cooperate and be connected, use fixed part 5 to fix anchor clamps 4 after the adjustment highly accomplish, be connected simulation part 8 and the other end of blade after the fixing is accomplished, adjust the pulling force size to the blade through simulation part 8, thereby simulate the centrifugal force of different intensity, open electromagnetic vibration platform 1 and carry out vibration test to accepting plate 2 and accepting anchor clamps 4 and blade that set up on the board 2 after all adjustment, and self intensity and rigidity of anchor clamps 4 are enough, can not take place resonance with the blade, can satisfy vibration test requirement, simulate centrifugal force and vibration's test simultaneously through simple material device, realize two experimental integration, test time is reduced, and test cost is practiced thrift. The testing device can realize the organic combination of centrifugal force, vibration and centrifugal force and vibration tests, and can realize the high-efficiency investigation of the comprehensive mechanical properties of the tested object.
After the blade tenon is put into the blade clamping groove 43, the fixed air cylinder 55 moves to drive the pressing plate 56 to move, the pressing plate 56 moves to press down the female clamping plate 42, the female clamping plate 42 presses down to clamp the blade clamping groove 43, at the moment, after the female clamping plate 42 presses down, the upper ends of the two fixed clamping jaws 51 are driven to be folded from two sides to the middle to be in a vertical state by the pulling force of shrinkage of the fixed springs 53, the upper surfaces of the female clamping plates 42 are buckled by the upper ends of the two fixed clamping jaws 51, after the other ends of the two fixed clamping jaws 51 are inwards tensioned by the pulling force of shrinkage of the fixed springs 53, the lower sides of the female clamping plates 42 are buckled by the transverse buckle 52 arranged below the two fixed clamping jaws 51, so that the fixture 4 is fixed, after the work is completed, the fixed air cylinder 55 drives the pressing plate 56 to move upwards, the pressing plate 56 does not press down the female clamping plate 42, the fixture 4 is removed, the fixture 4 is well fixed by the fixture 4 in the vibration process, and the experimental accuracy is ensured.
High heat is easy to form in the vibration process, the service life of test instruments can be influenced, and the U-shaped groove 31 in the clamp bearing platform 3 is designed, so that cooling liquid can pass through the clamp bearing platform 3 in a larger area, the working temperatures of the clamp bearing platform 3 and the electromagnetic vibration table 1 are timely reduced, and the service life of the test device is prolonged. And in the test process, cooling is circularly carried out through cooling liquid in the clamp bearing platform 3.
After the blade tenon one end of the blade is clamped inside the clamp 4 before the vibration experiment is started, as a certain radian exists in most of the blade, the blade needs to be adjusted to be at the same horizontal position as the tension meter 7 before the vibration experiment, at the moment, the slide block on the screw rod sliding table 10 and the clamp 4 are fixedly connected to drive the clamp 4 to move up and down to adjust the height, the blade is adjusted to be at the same horizontal position as the tension meter 7, and the slide block on the screw rod sliding table 10 stops sliding to be stable, so that the test error is avoided to be larger, and the accuracy of the test is improved.
When the embodiment 1 of the invention works, after one end of the tension meter 7 is connected with one end of the rack 86, the worm 85 meshed with the worm wheel 84 is driven to rotate through the rotation of the worm wheel 84, the worm 85 drives the gear 87 to rotate during rotation, then the rack 86 meshed with the gear 87 is driven to slide, the rack 86 slides away from the tension meter 7, thereby pulling one end of the tension meter 7, simulating centrifugal forces of different magnitudes according to the moving distance of the rack 86, and effectively observing the magnitudes of the centrifugal forces in the test through the readings on the tension meter 7.
After the centrifugal force value is adjusted, the turntable 882 is stopped, at this time, the output end of the air cylinder 884 drives the air clamp 885 to rise to a proper position of the turntable 882, the output end of the air clamp 885 works to clamp and fix the turntable 882, after the vibration test is completed, the air clamp 885 releases the clamping and fixing of the turntable 882, and the output end of the air cylinder 884 drives the air clamp 885 to move vertically downwards to a position slightly lower than the turntable 882 to stop, so that the turntable 882 is prevented from rotating in the experimental process to influence experimental data, and the experimental accuracy is ensured.
When the embodiment 2 of the invention works, the guide rod 803 is pulled towards the opposite direction of the tension meter 7, the numerical value on the tension meter 7 is observed, the bolt lock 802 is inserted into the scale bolt hole 804 to be fixed after the numerical value is proper, the bolt lock 802 is pulled out to be canceled to be fixed after the vibration test is finished, the numerical value is conveniently adjusted for the next test, the device is simple and easy to realize, the cost is low, the tension meter 7 is used for conveniently checking test data, and the process of simulating the centrifugal force is visualized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A single pole pull formula characterization centrifugal force's shaking table testing arrangement, its characterized in that: the device comprises an electromagnetic vibration table (1), a bearing plate (2), a clamp bearing platform (3), a clamp (4), a fixing component (5), a tension meter pedestal (6), a tension meter (7) and a simulation component (8); wherein,
the bearing plate (2) is arranged on the electromagnetic vibration table (1), and the bearing plate (2) is fixedly connected with the table top of the electromagnetic vibration table (1) through eight-hole bolts;
the clamp bearing platform (3) is arranged above the bearing plate (2) in a sliding manner;
the clamp (4) is arranged above the clamp bearing platform (3);
the clamp (4) comprises a male clamping plate (41), a female clamping plate (42) and a blade clamping groove (43);
the male clamping plate (41) is arranged on the clamp bearing platform (3), the female clamping plate (42) is connected above the male clamping plate (41) in a clamping mode, and a blade clamping groove (43) is formed in the female clamping plate (42);
the fixing parts (5) are arranged on two sides of the clamp (4);
the tension meter pedestal (6) is arranged on one side of the clamp bearing platform (3);
the tension meter (7) is arranged on the tension meter pedestal (6), one end of the tension meter (7) faces the direction of the clamp (4), and the other end of the tension meter is provided with the simulation component (8);
the fixing part (5) comprises two fixing plates (54), two fixing clamping jaws (51), four transverse buckles (52), two fixing springs (53), a fixing cylinder (55) and a pressing plate (56); wherein,
the two fixing plates (54) are vertically and fixedly arranged on the clamp bearing platform (3);
the two fixed clamping jaws (51) are respectively arranged on two sides of the clamp (4), and the two fixed clamping jaws (51) are both rotatably arranged on the two fixed plates (54);
the four transverse buckles (52) are respectively and fixedly arranged at one ends of the two fixed clamping jaws (51) in pairs, and two ends of the two fixed springs (53) are respectively connected at one ends of the two fixed clamping jaws (51);
the fixed cylinder (55) is arranged on the clamp bearing platform (3), and the pressing plate (56) is arranged at the output end of the fixed cylinder (55);
the simulation component (8) comprises a supporting seat (81), a baffle plate (82), two supporting plates (83), a turbine (84), a worm (85), a rack (86) and a gear (87);
the supporting seat (81) is fixedly arranged at one end of the tension meter pedestal (6);
the baffle (82) is fixedly arranged above the supporting seat (81);
the two supporting plates (83) are fixedly arranged above the supporting seat (81);
the worm (85) is rotatably arranged between the two support plates (83), the turbine (84) is arranged above the worm (85), and the turbine (84) is meshed with the worm (85);
the rack (86) is arranged above the supporting seat (81) in a sliding manner;
a through hole for sliding the rack (86) is further formed below the baffle (82);
the gear (87) is fixedly arranged at one end of the worm (85), the rack (86) is meshed with the gear (87), and a locking and fixing part (88) is arranged at one side of the baffle (82);
the locking fixing part (88) comprises a rotary handle (881), a rotary disc (882), a rotary shaft (883), an air cylinder (884) and an air clamp (885); wherein,
one end of the rotating shaft (883) penetrates through the baffle (82) and then is connected with the turbine (84);
the rotary disc (882) is rotatably arranged at the other end of the rotary shaft (883);
the rotating handle (881) is arranged on the turntable (882);
the cylinder (884) is arranged on the supporting seat (81);
the air clamp (885) is arranged at the output end of the air cylinder (884), and the clamping jaw end of the air clamp (885) faces the direction of the turntable (882);
the simulation component (8) comprises a counter-force column (801), a bolt lock (802), a guide rod (803) and a scale bolt hole (804); wherein,
the counterforce column (801) is fixedly arranged on the bearing plate (2);
one end of the guide rod (803) is connected with one end of the tension meter (7);
the scale key holes (804) are arrayed on the guide rod (803);
the bolt lock (802) is respectively and movably connected with a plurality of scale bolt holes (804).
2. The single pole pull type vibrating table testing device for characterizing centrifugal force according to claim 1, wherein: the upper surface of the male clamping plate (41) is provided with a plurality of anti-slip ribs (9).
3. The single pole pull type vibrating table testing device for characterizing centrifugal force according to claim 1, wherein: the inside U type groove (31) that supplies the coolant liquid to store that is equipped with of anchor clamps cushion cap (3) is used for adjusting the operating temperature of anchor clamps cushion cap (3) and electromagnetic vibration platform (1).
4. The single pole pull type vibrating table testing device for characterizing centrifugal force according to claim 1, wherein: the two ends of the clamp bearing platform (3) are respectively provided with a screw rod sliding table (10), and the output ends of the two screw rod sliding tables (10) are respectively fixedly connected with the two ends of the female clamping plate (42).
5. A method of testing a device according to any one of claims 1 to 4, comprising:
one end of a tenon of a measured blade is placed into a blade clamping groove (43), a female clamping plate (42) is pressed down to be clamped with a male clamping plate (41), and the tenon end of the blade is clamped and fixed;
the height of the clamp bearing platform (3) is adjusted, a sliding block on the screw rod sliding table (10) is fixedly connected with the clamp (4) to drive the clamp (4) to move up and down to adjust the height, the blade is adjusted to be at the same horizontal position with the tension meter (7), and the clamp (4) is fixed by using the fixing part (5) after the adjustment of the height is completed;
after the fixation is completed, the simulation component (8) is connected with the other end of the blade, and the tension of the blade is adjusted through the simulation component (8), so that centrifugal forces with different intensities are loaded;
opening the electromagnetic vibration table (1) to perform vibration test on the bearing plate (2), the clamp (4) and the blades;
and in the test process, cooling is circularly carried out through cooling liquid in the clamp bearing platform 3.
6. The method of testing of claim 5, further comprising:
after the blade tenons are placed in the blade clamping grooves (43), the fixed air cylinders (55) move to drive the pressing plates (56) to move to press down the female clamping plates (42), and the female clamping plates (42) press down to clamp the blade clamping grooves (43);
after the female clamping plate (42) is pressed down, the upper ends of the two fixed clamping jaws (51) are driven to be folded from two sides to the middle to a vertical state by the aid of the shrinkage tension of the fixed springs (53), the upper surfaces of the female clamping plate (42) are buckled by the upper ends of the two fixed clamping jaws (51), the other ends of the two fixed clamping jaws (51) are inwards tensioned by the aid of the shrinkage tension of the fixed springs (53), and then the lower sides of the female clamping plate (42) are buckled by the aid of the transverse buckles (52) arranged below the two fixed clamping jaws (51), so that the fixture (4) is fixed;
after the test is finished, the fixed air cylinder (55) drives the pressing plate (56) to move upwards, and the pressing plate (56) does not press down the female clamping plate (42) any more, so that the fixation of the two fixed clamping jaws (51) to the clamp (4) is released;
the loading of centrifugal forces of different intensities comprises: after one end of the tension meter 7 is connected with one end of the rack (86), simulating centrifugal forces with different magnitudes according to the magnitude of the moving distance of the rack (86), and acquiring the magnitude of the centrifugal force through reading on the tension meter (7); or comprises: the guide rod (803) pulls towards the opposite direction of the tension meter (7), after the numerical value on the tension meter (7) is set, the bolt lock (802) is inserted into the scale bolt hole (804) for fixing, and after the vibration test is finished, the bolt lock (802) is pulled out for canceling the fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061896.0A CN113639950B (en) | 2021-09-10 | 2021-09-10 | Single-rod drawing type vibration table testing device and testing method for representing centrifugal force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061896.0A CN113639950B (en) | 2021-09-10 | 2021-09-10 | Single-rod drawing type vibration table testing device and testing method for representing centrifugal force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113639950A CN113639950A (en) | 2021-11-12 |
| CN113639950B true CN113639950B (en) | 2023-11-28 |
Family
ID=78425415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111061896.0A Active CN113639950B (en) | 2021-09-10 | 2021-09-10 | Single-rod drawing type vibration table testing device and testing method for representing centrifugal force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113639950B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2494365C1 (en) * | 2012-03-27 | 2013-09-27 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Loading device for investigation of end damping of oscillations of fan blades of gas-turbine engine on vibration test rig |
| CN108036911A (en) * | 2017-12-13 | 2018-05-15 | 中国飞机强度研究所 | A kind of experimental rig for measuring turbine rotor blade damping vibration attenuation effect |
| WO2019232710A1 (en) * | 2018-06-05 | 2019-12-12 | 东北大学 | Comprehensive performance test platform for axial tension, bending, tension, and vibration of composite material |
| CN212301124U (en) * | 2020-05-29 | 2021-01-05 | 东莞市越铧电子科技有限公司 | Multistation tensile testing mechanism with antidetonation function |
-
2021
- 2021-09-10 CN CN202111061896.0A patent/CN113639950B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2494365C1 (en) * | 2012-03-27 | 2013-09-27 | Федеральное государственное унитарное предприятие "Центральный институт авиационного моторостроения имени П.И. Баранова" | Loading device for investigation of end damping of oscillations of fan blades of gas-turbine engine on vibration test rig |
| CN108036911A (en) * | 2017-12-13 | 2018-05-15 | 中国飞机强度研究所 | A kind of experimental rig for measuring turbine rotor blade damping vibration attenuation effect |
| WO2019232710A1 (en) * | 2018-06-05 | 2019-12-12 | 东北大学 | Comprehensive performance test platform for axial tension, bending, tension, and vibration of composite material |
| CN212301124U (en) * | 2020-05-29 | 2021-01-05 | 东莞市越铧电子科技有限公司 | Multistation tensile testing mechanism with antidetonation function |
Non-Patent Citations (4)
| Title |
|---|
| 张东明,柳恩杰.航空发动机涡轮叶片高温振动疲劳试验的新方法.航空发动机.2005,(第01期),全文. * |
| 王彬 ; .某舰载电子设备振动试验夹具设计及分析.南京工程学院学报(自然科学版).2020,(第01期),全文. * |
| 陈璐璐 ; 马艳红 ; 杨鑫 ; 洪杰 ; .带干摩擦阻尼结构叶片振动响应试验.航空动力学报.2008,(第09期),全文. * |
| 高翔 ; 燕群 ; 杭超 ; 由于 ; .涡轮叶片高温振动特性试验技术研究.装备环境工程.2018,(第09期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113639950A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103196683B (en) | Toy automatic force application tester and test method thereof | |
| CN113639950B (en) | Single-rod drawing type vibration table testing device and testing method for representing centrifugal force | |
| CN206300855U (en) | Flexural fatigue tester and test system | |
| CN111982727A (en) | Double-column double-beam portable pressing-in instrument suitable for laboratory and field test | |
| CN113358487B (en) | Device and method for testing high-temperature low-cycle fatigue performance of rotor blade | |
| CN108931432A (en) | Battery welding tensile force testing equipment | |
| CN106404571A (en) | Bending fatigue test apparatus and test system | |
| CN111089781B (en) | Rock shear test equipment and direct shear test method for rock test block | |
| CN114659897A (en) | Solid propellant confining pressure in-situ tensile test device and test method | |
| CN111141619A (en) | In-situ tester for mechanical properties of materials under high and low temperature alternation | |
| CN211042125U (en) | Laser plane interferometer for preventing workpiece from sliding off detection table | |
| CN213438626U (en) | Tool changing spindle tension test structure | |
| CN211277393U (en) | Portable dynamic loading and fine adjustment measuring device based on main shaft rotation precision | |
| CN108760499B (en) | Electric plastic foam thickness and compression creep testing device | |
| CN217542401U (en) | Door executor testing arrangement | |
| CN220137188U (en) | Table top type plate separating detection jig | |
| CN117074005B (en) | Vibration testing device for blade damper of gas turbine | |
| KR20100063922A (en) | Equipment for monitoring rotor clearance of generator | |
| CN218444792U (en) | Free drop test machine | |
| CN109341645A (en) | Roughness measurement jig and press equipment | |
| CN215894211U (en) | Dynamic and static load testing machine for safety belt | |
| CN220339515U (en) | Auxiliary jig for measuring color difference meter | |
| CN216559986U (en) | Test tool and test machine for guide rail pair | |
| CN216646078U (en) | Microcomputer-controlled horizontal safety tongs pressure testing machine | |
| CN218583919U (en) | A examine utensil for vehicle vent-pipe A row assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |