CN112556957A - Transmission characteristic test device for liquid elastic vibration isolation system - Google Patents
Transmission characteristic test device for liquid elastic vibration isolation system Download PDFInfo
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- CN112556957A CN112556957A CN202011414214.5A CN202011414214A CN112556957A CN 112556957 A CN112556957 A CN 112556957A CN 202011414214 A CN202011414214 A CN 202011414214A CN 112556957 A CN112556957 A CN 112556957A
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- counterweight
- disc
- cover plate
- connector
- elastic vibration
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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
- G01M13/00—Testing of machine parts
Abstract
The invention belongs to the technical field of helicopter vibration control, and particularly relates to a transfer characteristic test device for a liquid elastic vibration isolation system. The device comprises a bracket hanging system, a counterweight structure system and a test installation platform; the support suspension system is installed on the test installation platform, the liquid bomb vibration isolation system is arranged in the support suspension system, different counterweight masses can be installed at the upper end and the lower end of the liquid bomb vibration isolator through the counterweight structure system, the device can measure the vibration transmission characteristic of the liquid bomb vibration isolator, meanwhile, the installation state of various main weight reducing quantities can be simulated, meanwhile, the test implementation is simple, the test period is short, and the maintenance and the replacement are very convenient.
Description
Technical Field
The invention belongs to the technical field of helicopter vibration control, and particularly relates to a transfer characteristic test device for a liquid elastic vibration isolation system.
Background
The transfer characteristic test is an effective and low-cost method for researching the performance of the vibration isolator, verifying the design of the vibration isolator and calculating results, and related test devices are basically based on the structural simplification of a helicopter system.
In order to verify the vibration isolation performance of the liquid-elastic vibration isolator, the traditional idea is to perform rigidity test on a rigidity testing machine, although the method is relatively simple to implement, the method has higher requirements on the precision of testing equipment due to the higher rigidity and the excitation frequency of the vibration isolator, and meanwhile, the method cannot directly measure the vibration isolation performance of the liquid-elastic vibration isolator and only indirectly reflects the vibration isolation characteristic of the liquid-elastic vibration isolator. The scheme also utilizes the helicopter main reduction platform or the imitation main reduction platform to carry out the test, but the scheme has high cost and long test period and is not beneficial to the development of the test.
The test device is designed, can be mounted on an excitation platform, can test the transmission characteristic of the liquid-elastic vibration isolator, can simulate various main weight-reducing mounting states, is relatively simple in test implementation, shortens the test period, and is very convenient to maintain and replace.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects of the prior art, the transfer characteristic test device for the liquid bomb vibration isolation system is provided, the device is installed on a vibration excitation platform, the liquid bomb vibration isolator is arranged in the device, different counterweight masses can be installed at the upper end and the lower end of the liquid bomb vibration isolation system, the device can measure the vibration transfer characteristic of the liquid bomb vibration isolator, and can simulate various main weight reduction installation states, and meanwhile, the test is simple to implement, short in test period, and very convenient to maintain and replace.
The technical scheme of the invention is as follows:
in order to achieve the aim, the invention provides a transfer characteristic test device for a liquid elastic vibration isolation system, which is placed on a vibration excitation platform and is characterized by comprising a bracket hanging system, a counterweight structure system and a test installation platform,
the support hanging system is of a hollow cylindrical support structure and comprises a disc hanger 1, a bottom disc support 2 formed by welding six stand columns to a bottom disc in a regular hexagon manner, an upper connector 3, a lower connector 4 and a positioning connecting bolt 5;
the upper end of each upright column of the bottom end disc support 2 is provided with an internal thread, through holes are arranged on the disc suspension 1 corresponding to the positions of the upright columns, and the disc suspension 1 is connected with the support 2 through bolts; the upper end of the upper connector 3 is provided with a threaded hole, the circle center and the periphery of the disc suspension 1 are correspondingly provided with threaded holes, and the upper connector 3 is suspended on the lower surface of the disc suspension 1 through a positioning connecting bolt 5; the upper connector 3 is radially provided with through holes, and the upper end of the liquid elastic vibration isolator 15 to be tested is connected with the upper connector 3 through a suspension beam; the lower end of the lower connector 4 is connected with the counterweight structure system, through holes are radially arranged on the lower connector 4, and the lower end of the liquid-elastic vibration isolator 15 to be tested is connected with the lower connector 4 through a suspension beam;
the counterweight structure system comprises an upper counterweight 6, a lower first counterweight 7, a lower second counterweight 8 and a positioning connecting bolt 9; the upper end counterweight 6 is a disc-shaped stainless steel mass block, threaded holes are formed in the upper end counterweight 6, and the upper end counterweight is connected with the disc suspension 1 through bolts; the lower end first balance weight 7 is a cylindrical stainless steel mass block, is provided with a threaded hole and is connected with the lower connector 4 through a bolt; the lower end second balance weight 8 is a hollow annular stainless steel mass block, is provided with a threaded hole and is connected with the lower end first balance weight 7 through a positioning connecting bolt 9;
the test mounting platform comprises an upper cover plate 10, a lower cover plate 11, a force sensor 12, a force sensor joint 13 and a positioning connecting bolt 14; the upper cover plate 10 is a disk-shaped stainless steel mass block, a threaded hole is configured in the upper cover plate, the upper cover plate 10 is connected with the lower surface of the bottom end disk support 2 through a positioning connecting bolt 14, and the upper cover plate 10 is connected with the force sensor 12 through the force sensor joint 13; the lower cover plate 11 is a disk-shaped stainless steel mass block, a threaded hole is formed in the lower cover plate, the lower cover plate is connected with the excitation platform through a bolt, and the lower cover plate 11 is connected with the force sensor 12 through the force sensor connector 13.
In one possible embodiment, the outer diameter of the disc suspension 1 is in the range of 500 and 560 mm.
In a possible embodiment, the upper end weight 6 is of the same size as the disc suspension 1.
In one possible embodiment, the upper end weight 6 has a mass in the range of 60-70 kg.
In one possible embodiment, the force sensor 12 is a shelf product, mass weight based sensor model.
In one possible embodiment, the disc suspension 1, the lower first balance weight 7, the lower second balance weight 8, the upper cover plate 10 and the lower cover plate 11 are all made of stainless steel.
In one possible embodiment, the lower first counterweight 7 has a mass in the range of 90-100 kg.
In one possible embodiment, the lower second counterweight 8 has a mass ranging from 100 to 105 kg.
The invention has the beneficial effects that:
the transfer characteristic test device for the liquid elastic vibration isolator is installed on a vibration excitation platform, the liquid elastic vibration isolation system is arranged in a support, different counterweight masses can be installed at the upper end and the lower end of the liquid elastic vibration isolation system, the device can measure the vibration transfer characteristic of the liquid elastic vibration isolator, can simulate various main weight reduction installation states, and is simple in test implementation, short in test period and very convenient to maintain and replace.
Drawings
FIG. 1A is a front view of the apparatus of the present invention
FIG. 1B is a top view of the inventive apparatus
Wherein:
1-disc suspension, 2-bottom disc support, 3-upper connector, 4-lower connector, 5-positioning connecting bolt, 6-upper end counterweight, 7-lower end first counterweight, 8-lower end second counterweight, 9-positioning connecting bolt, 10-upper cover plate, 11-lower cover plate, 12-force sensor, 13-force sensor connector, 14-positioning connecting bolt, 15-liquid elastic vibration isolator to be tested
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1A and 1B, the transfer characteristic test device for the liquid elastic vibration isolation system is placed on a vibration excitation platform and is characterized by comprising a bracket hanging system, a counterweight structure system and a test installation platform,
the support hanging system is of a hollow cylindrical support structure and comprises a disc hanger 1, a bottom disc support 2 formed by welding six stand columns to a bottom disc in a regular hexagon manner, an upper connector 3, a lower connector 4 and a positioning connecting bolt 5; the upper end of each upright column of the bottom end disc support 2 is provided with an internal thread, through holes are arranged on the disc suspension 1 corresponding to the positions of the upright columns, and the disc suspension 1 is connected with the support 2 through bolts; the upper end of the upper connector 3 is provided with a threaded hole, the circle center and the periphery of the disc suspension 1 are correspondingly provided with threaded holes, and the upper connector 3 is suspended on the lower surface of the disc suspension 1 through a positioning connecting bolt 5; the upper connector 3 is radially provided with through holes, and the upper end of the liquid elastic vibration isolator 15 to be tested is connected with the upper connector 3 through a suspension beam; the lower end of the lower connector 4 is connected with the counterweight structure system, through holes are radially arranged on the lower connector 4, and the lower end of the liquid-elastic vibration isolator 15 to be tested is connected with the lower connector 4 through a suspension beam;
the counterweight structure system comprises an upper counterweight 6, a lower first counterweight 7, a lower second counterweight 8 and a positioning connecting bolt 9; the upper end counterweight 6 is a disc-shaped stainless steel mass block, threaded holes are formed in the upper end counterweight 6, and the upper end counterweight is connected with the disc suspension 1 through bolts; the lower end first balance weight 7 is a cylindrical stainless steel mass block, is provided with a threaded hole and is connected with the lower connector 4 through a bolt; the lower end second balance weight 8 is a hollow annular stainless steel mass block, is provided with a threaded hole and is connected with the lower end first balance weight 7 through a positioning connecting bolt 9;
the test mounting platform comprises an upper cover plate 10, a lower cover plate 11, a force sensor 12, a force sensor joint 13 and a positioning connecting bolt 14; the upper cover plate 10 is a disk-shaped stainless steel mass block, a threaded hole is configured in the upper cover plate, the upper cover plate 10 is connected with the lower surface of the bottom end disk support 2 through a positioning connecting bolt 14, and the upper cover plate 10 is connected with the force sensor 12 through the force sensor joint 13; the lower cover plate 11 is a disk-shaped stainless steel mass block, a threaded hole is formed in the lower cover plate, the lower cover plate is connected with an excitation platform through a bolt, and the lower cover plate 11 is connected with the force sensor 12 through the force sensor connector 13;
the outer diameter range of the disc suspension 1 is 560 mm;
the upper end counterweight 6 is consistent with the disc suspension 1 in size;
the mass range of the upper end counterweight 6 is 70 kg;
the force sensor 12 adopts a goods shelf product and determines the type of the sensor based on mass balance weight;
the disc suspension 1, the lower end first balance weight 7, the lower end second balance weight 8, the upper cover plate 10 and the lower cover plate 11 are all made of stainless steel materials;
the lower end first counterweight 7 has a mass of 92 kg;
the lower second counterweight 8 has a mass in the range of 100 kg.
The foregoing is merely a detailed description of the embodiments of the present invention, and some of the conventional techniques are not detailed. The scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A transfer characteristic test device for a liquid elastic vibration isolation system is arranged on a vibration excitation platform and is characterized by comprising a bracket hanging system, a counterweight structure system and a test installation platform,
the support hanging system is of a hollow cylindrical support structure and comprises a disc hanger (1), a bottom disc support (2) formed by welding six stand columns to a bottom disc in a regular hexagon manner, an upper connector (3), a lower connector (4) and a positioning connecting bolt (5); the upper end of each upright post of the bottom end disc support (2) is provided with an internal thread, through holes are arranged on the disc suspension (1) corresponding to the positions of the upright posts, and the disc suspension (1) is connected with the support (2) through bolts; the upper end of the upper connector (3) is provided with a threaded hole, the circle center and the periphery of the disc suspension (1) are correspondingly provided with threaded holes, and the upper connector (3) is suspended on the lower surface of the disc suspension (1) through a positioning connecting bolt (5); the upper connector (3) is radially provided with through holes, and the upper end of the liquid elastic vibration isolator (15) to be tested is connected with the upper connector (3) through a suspension beam; the lower end of the lower connector (4) is connected with the counterweight structure system, through holes are radially arranged on the lower connector (4), and the lower end of the liquid-elastic vibration isolator (15) to be tested is connected with the lower connector (4) through a suspension beam;
the counterweight structure system comprises an upper counterweight (6), a lower first counterweight (7) and a lower second counterweight (8); the upper end counterweight (6) is a disc-shaped stainless steel mass block, threaded holes are formed in the upper end counterweight (6), and the upper end counterweight is connected with the disc suspension (1) through bolts; the lower end first balance weight (7) is a cylindrical stainless steel mass block, is provided with a threaded hole and is connected with the lower connector (4) through a bolt; the lower end second balance weight (8) is a hollow annular stainless steel mass block, is provided with a threaded hole and is connected with the lower end first balance weight (7) through a positioning connecting bolt (9);
the test mounting platform comprises an upper cover plate (10), a lower cover plate (11), a force sensor (12) and a force sensor joint (13); the upper cover plate (10) is a disc-shaped stainless steel mass block, a threaded hole is formed in the upper cover plate, the upper cover plate (10) is connected with the lower surface of the bottom end disc support (2) through a positioning connecting bolt (14), and the upper cover plate (10) is connected with the force sensor (12) through the force sensor joint (13); the lower cover plate (11) is a disc-shaped stainless steel mass block, threaded holes are formed in the lower cover plate, the lower cover plate is connected with the excitation platform through bolts, and the lower cover plate (11) is connected with the force sensor (12) through the force sensor connector (13).
2. The transfer characteristic test device for the liquid elastic vibration isolation system as claimed in claim 1, wherein the outer diameter range of the disc suspension (1) is 500-560 mm.
3. The transfer characteristic test device for the hydro-elastic vibration isolation system according to claim 1, wherein the upper end weight (6) is the same size as the disc suspension (1).
4. The transfer characteristic test device for the hydro-elastic vibration isolation system according to claim 1, wherein the mass of the upper end weight (6) is in the range of 60-70 kg.
5. The transfer characteristic test device for the hydro-elastic vibration isolation system according to claim 1, wherein the force sensor (12) is a shelf product, and a sensor model is determined based on a mass balance.
6. The transfer characteristic test device for the liquid elastic vibration isolation system according to claim 1, wherein the disc suspension (1), the lower end first counterweight (7), the lower end second counterweight (8), the upper cover plate (10) and the lower cover plate (11) are all made of stainless steel.
7. The transfer characteristic test device for the hydro-elastic vibration isolation system according to claim 1, wherein the lower end first counter weight (7) has a mass ranging from 90 kg to 100 kg.
8. The transfer characteristic test device for the liquid-elastic vibration isolation system as claimed in claim 1, wherein the mass range of the lower second counterweight (8) is 100-105 kg.
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| CN202011414214.5A CN112556957B (en) | 2020-12-04 | 2020-12-04 | Transmission characteristic test device for liquid elastic vibration isolation system |
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| CN202011414214.5A CN112556957B (en) | 2020-12-04 | 2020-12-04 | Transmission characteristic test device for liquid elastic vibration isolation system |
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