CN115420478A - Hub centrifugal load test device - Google Patents
Hub centrifugal load test device Download PDFInfo
- Publication number
- CN115420478A CN115420478A CN202110601064.7A CN202110601064A CN115420478A CN 115420478 A CN115420478 A CN 115420478A CN 202110601064 A CN202110601064 A CN 202110601064A CN 115420478 A CN115420478 A CN 115420478A
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- hub
- test
- propeller hub
- fixedly connected
- centrifugal load
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 238000004088 simulation Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 10
- 230000003068 static effect Effects 0.000 description 6
- 238000009661 fatigue test Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a centrifugal load test device for a propeller hub, which comprises a base, a connecting bracket, the propeller hub, a blade simulation piece, a pulley, a steel wire rope and a test oil cylinder, wherein the connecting bracket is fixedly connected to the top of the base; the blade simulation pieces are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub; the end, far away from the propeller hub, of each blade simulation piece is rotatably provided with a pulley, the number of the test oil cylinders is two, the test oil cylinders are respectively in one-to-one correspondence with the two blade simulation pieces, the free end part of each test oil cylinder is fixedly provided with a tension sensor, an elastic body of each tension sensor is provided with a connecting roller, and the tension sensor is fixedly connected with the pulley, close to the end of the propeller hub, of the corresponding tension sensor through the steel wire rope in a pulling mode; the test oil cylinder and the tension sensor are respectively and electrically connected with an external servo control system.
Description
Technical Field
The invention relates to a centrifugal load test device, in particular to a centrifugal load test device for a propeller hub.
Background
The hub is an important moving part in the working process of the propeller and bears most of centrifugal load generated by the rotation of the propeller, so that the strength performance of the hub needs to be verified through tests. During the processes of fatigue test, static test and stress-strain distribution test of the propeller hub, the propeller hub of the propeller is fixed, so that centrifugal load cannot be generated in a rotating mode.
In the process of the static test of the propeller hub, such as a fatigue test, a static test, a stress-strain distribution test and the like, a reliable applying mode of the centrifugal load test of the propeller hub is important.
Therefore, how to provide a centrifugal load testing device without the need of rotating a hub is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the invention provides a centrifugal load testing device for a hub, which can test the fatigue strength of the hub under the static state of the hub.
In order to achieve the purpose, the invention adopts the following technical scheme: a centrifugal load test device for a propeller hub comprises a base, a connecting bracket, the propeller hub, a blade simulation piece, a pulley, a steel wire rope and a test oil cylinder, wherein the connecting bracket is fixedly connected to the top of the base, and the propeller hub is fixedly connected to the top of the connecting bracket; the blade simulation pieces are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub; the end, far away from the propeller hub, of each blade simulation piece is rotatably provided with a pulley, the number of the test oil cylinders is two, the test oil cylinders are respectively arranged in one-to-one correspondence with the two blade simulation pieces, the free end part of each test oil cylinder is fixedly provided with a tension sensor, an elastic body of each tension sensor is provided with a connecting roller, and the tension sensor is fixedly connected with the pulley, close to the end of the propeller hub, of the corresponding pulley through a steel wire rope; and the test oil cylinder and the tension sensor are respectively and electrically connected with an external servo control system.
The beneficial effects of the invention are: with propeller hub fixed connection on the base, the linking bridge replaces the propeller shaft effect, can reduce test cost, simplify test structure, the relative both sides face of propeller hub sets up the test hydro-cylinder, the paddle simulation piece on the free end of test hydro-cylinder passes through wire rope joint propeller hub, build the rotatory experimental environment of paddle, during the test, only need through the application force load of servo control system control test hydro-cylinder, and two test hydro-cylinders of relative setting alternate action, the simulation produces centrifugal load, accomplish the fatigue strength and detects. The test operation is simple, the results of the fatigue test, the static test and the stress-strain distribution test of the hub can be obtained through the test without actually rotating the hub, the efficiency is high, and the cost is low.
Preferably, the rotating surface of the propeller hub is parallel to the plane where the free end of the test oil cylinder extends and retracts; the rotating surface is a horizontal plane on which the hub and the blades rotate; the installation axis of the connecting roller and the installation axis of the pulley are both horizontally positioned on the rotating surface of the propeller hub.
Preferably, the connecting bracket is of a cylindrical structure, and two ends of the connecting bracket are respectively provided with a connecting flange and are respectively fixedly connected with the base and the propeller hub.
Preferably, a rod frame is fixedly connected to the shell of the test oil cylinder, and the rod frame is fixedly connected to the ground.
Preferably, the steel wire rope is elliptical and is sleeved on the pulley and the connecting roller.
Preferably, the test oil cylinders are horizontally arranged, and the telescopic directions of the free ends of the two corresponding test oil cylinders are collinear with the center of the propeller hub.
Preferably, the test oil cylinder is a servo hydraulic oil cylinder.
Drawings
Fig. 1 is an overall view of a hub centrifugal load test apparatus according to the present invention.
The test device comprises a base 1, a connecting support 2, a propeller hub 3, a blade simulation piece 4, a pulley 5, a steel wire rope 6, a test oil cylinder 7, a tension sensor 8, a connecting roller 9 and a rod frame 10.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to the attached drawing 1 of the invention, the hub centrifugal load test device according to the embodiment of the invention comprises a base 1, a connecting bracket 2, a hub 3, a blade simulation piece 4, a pulley 5, a steel wire rope 6 and a test oil cylinder 7, wherein the connecting bracket 2 is fixedly connected to the top of the base 1, and the hub 3 is fixedly connected to the top of the connecting bracket 2; the blade simulation pieces 4 are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub 3; the end, far away from the propeller hub 3, of each blade simulation piece 4 is rotatably provided with a pulley 5, two groups of test oil cylinders 7 are arranged and correspond to the two blade simulation pieces 4 one by one respectively, a tension sensor 8 is fixedly arranged at the free end part of each test oil cylinder 7, a connecting roller 9 is arranged on an elastic body of each tension sensor 8, and the tension sensor is fixedly connected with the pulley at the end, close to the propeller hub 3, of each tension sensor through a steel wire rope 6; the test oil cylinder 7 and the tension sensor 8 are respectively and electrically connected with an external servo control system.
Specifically, the tension sensor is any one of an S-shaped tension sensor and a plate ring type tension sensor.
In some embodiments, the rotation plane of the hub 3 is parallel to the plane of the free end of the test cylinder 7 in the telescopic direction; the rotating surface is a horizontal plane on which the hub and the blades rotate; the mounting axis of the connecting roller 9 and the mounting axis of the pulley 5 are both horizontally located on the plane of rotation of the hub 3 in order to obtain a measurement of the actual hub rotation.
In some embodiments, the connecting bracket 2 is a cylindrical structure, and has two ends respectively provided with a connecting flange, and is fixedly connected with the base 1 and the hub 3 respectively.
In other embodiments, the rod frame 10 is fixedly connected to the outer shell of the testing cylinder 7, and the rod frame 10 is fixedly connected to the ground, so that the height of the testing cylinder can be conveniently adjusted, and the lead can be conveniently led out.
In other embodiments, the cable 6 is elliptical and is looped over the pulley 5 and the connecting roller 9.
Specifically, the method comprises the following steps. Due to the arrangement of the steel wire rope, the tension of the test oil cylinder is ensured to be collinear with the rotating surface of the propeller hub in the tensile test process, and an accurate test result is obtained.
In other embodiments, the test cylinders 7 are arranged horizontally, and the telescopic directions of the two corresponding test cylinders 7 are collinear with the center of the hub 3, so that an accurate centrifugal load result is ensured.
Specifically, the test oil cylinder 7 is a servo hydraulic oil cylinder, and the size of the centrifugal load can be conveniently adjusted through a servo control system.
The invention relates to a centrifugal load test device for a propeller hub, which is used for measuring the fatigue strength, the static test and the stress-strain distribution of the propeller hub by simulating the generation of a centrifugal load through two oppositely arranged test oil cylinders. Compared with the traditional rotation test, the limit of torque and motor power is reduced, a larger centrifugal force can be quickly reached, and a measurement result is obtained.
The method comprises the specific test steps that a propeller hub is arranged on a base through a connecting support, the connecting support plays a role of a propeller shaft simulation piece, a propeller sleeve of the propeller hub is provided with a propeller blade simulation piece, the propeller shaft simulation piece is connected with a test oil cylinder through a pulley, a steel wire rope and a tension sensor, the tension sensor can measure the centrifugal load, and the test oil cylinder can control the output load through a servo control system. The pulley can ensure that the stress of the upper steel wire rope and the stress of the lower steel wire rope are consistent, so that the centrifugal load is coaxial with the axis of the hub and the sleeve.
For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The centrifugal load test device for the propeller hub is characterized by comprising a base (1), a connecting bracket (2), the propeller hub (3), a blade simulation piece (4), a pulley (5), a steel wire rope (6) and a test oil cylinder (7), wherein the connecting bracket (2) is fixedly connected to the top of the base (1), and the propeller hub (3) is fixed to the top of the connecting bracket (2); the blade simulation pieces (4) are grouped in pairs and are respectively and fixedly connected to two sides of the propeller hub (3) relatively; pulleys (5) are rotatably arranged at one end, far away from the propeller hub (3), of each blade simulation piece (4), two groups of test oil cylinders (7) are arranged and correspond to the two blade simulation pieces (4) one by one respectively, a tension sensor (8) is fixedly arranged at the free end of each test oil cylinder (7), a connecting roller (9) is arranged on an elastic body of each tension sensor (8), and the tension sensor is fixedly connected with the pulley at one end, close to the propeller hub (3), of the blade simulation piece through the steel wire rope (6); and the test oil cylinder (7) and the tension sensor (8) are respectively and electrically connected with an external servo control system.
2. A hub centrifugal load test device according to claim 1, characterized in that the rotation plane of the hub (3) is parallel to the plane of the free end of the test cylinder (7) in the telescopic direction; the rotation plane is a horizontal plane on which the hub and the blades rotate; the mounting axis of the connecting roller (9) and the mounting axis of the pulley (5) are both horizontally positioned on the rotating surface of the propeller hub (3).
3. A hub centrifugal load test device according to claim 1, wherein the connecting bracket (2) is a cylindrical structure, and two ends of the connecting bracket are respectively provided with a connecting flange and are respectively fixedly connected with the base (1) and the hub (3).
4. A hub centrifugal load test device according to claim 1, characterized in that a rod frame (10) is fixedly connected to the housing of the test cylinder (7), and the rod frame (10) is fixedly connected to the ground.
5. A hub centrifugal load test device according to claim 1, wherein said wire rope (6) is elliptical and is sleeved on said pulley (5) and connection roller (9).
6. A hub centrifugal load test device according to claim 1, wherein the test cylinders (7) are horizontally arranged, and the extending and retracting directions of the free ends of the corresponding two test cylinders (7) are collinear with the center of the hub (3).
7. A hub centrifugal load test device according to any one of claims 1 to 6, characterized in that the test cylinder (7) is a servo hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601064.7A CN115420478A (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601064.7A CN115420478A (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
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| Publication Number | Publication Date |
|---|---|
| CN115420478A true CN115420478A (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110601064.7A Pending CN115420478A (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
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| CN (1) | CN115420478A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017044A (en) * | 2001-08-23 | 2003-03-03 | 한국항공우주연구원 | Bench for static structure/fatigue tests of helicopter rotor blade and hub system |
| KR20090012045U (en) * | 2008-05-23 | 2009-11-26 | 이경근 | Rotor blade of test equipment |
| CN102243142A (en) * | 2011-04-13 | 2011-11-16 | 中国航空动力机械研究所 | Centrifugal load application system |
| CN104697766A (en) * | 2014-08-26 | 2015-06-10 | 中国直升机设计研究所 | Bidirectional hinge support device |
| CN104833493A (en) * | 2015-04-07 | 2015-08-12 | 中国直升机设计研究所 | Fatigue test loading device for tail rotor hub central component |
| CN106768920A (en) * | 2016-11-29 | 2017-05-31 | 中国直升机设计研究所 | A kind of fatigue experimental device |
| CN106828973A (en) * | 2017-02-10 | 2017-06-13 | 中国航发沈阳发动机研究所 | A kind of propeller centrifugal load experimental rig |
| CN112326080A (en) * | 2020-11-18 | 2021-02-05 | 中国人民解放军总参谋部第六十研究所 | Torsional rigidity testing device and measuring method for tension-torsion bar |
| CN214748830U (en) * | 2021-05-31 | 2021-11-16 | 惠阳航空螺旋桨有限责任公司 | Hub centrifugal load test device |
-
2021
- 2021-05-31 CN CN202110601064.7A patent/CN115420478A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030017044A (en) * | 2001-08-23 | 2003-03-03 | 한국항공우주연구원 | Bench for static structure/fatigue tests of helicopter rotor blade and hub system |
| KR20090012045U (en) * | 2008-05-23 | 2009-11-26 | 이경근 | Rotor blade of test equipment |
| CN102243142A (en) * | 2011-04-13 | 2011-11-16 | 中国航空动力机械研究所 | Centrifugal load application system |
| CN104697766A (en) * | 2014-08-26 | 2015-06-10 | 中国直升机设计研究所 | Bidirectional hinge support device |
| CN104833493A (en) * | 2015-04-07 | 2015-08-12 | 中国直升机设计研究所 | Fatigue test loading device for tail rotor hub central component |
| CN106768920A (en) * | 2016-11-29 | 2017-05-31 | 中国直升机设计研究所 | A kind of fatigue experimental device |
| CN106828973A (en) * | 2017-02-10 | 2017-06-13 | 中国航发沈阳发动机研究所 | A kind of propeller centrifugal load experimental rig |
| CN112326080A (en) * | 2020-11-18 | 2021-02-05 | 中国人民解放军总参谋部第六十研究所 | Torsional rigidity testing device and measuring method for tension-torsion bar |
| CN214748830U (en) * | 2021-05-31 | 2021-11-16 | 惠阳航空螺旋桨有限责任公司 | Hub centrifugal load test device |
Non-Patent Citations (1)
| Title |
|---|
| 李清蓉 等: "直升机主桨毂支臂疲劳试验技术研究", 《直升机技术》, 31 December 2012 (2012-12-31), pages 56 - 62 * |
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