CN112461464A - Torsion rigidity test loading device for central elastic bearing - Google Patents
Torsion rigidity test loading device for central elastic bearing Download PDFInfo
- Publication number
- CN112461464A CN112461464A CN202011316581.1A CN202011316581A CN112461464A CN 112461464 A CN112461464 A CN 112461464A CN 202011316581 A CN202011316581 A CN 202011316581A CN 112461464 A CN112461464 A CN 112461464A
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- joint
- torsion
- elastic bearing
- central elastic
- bolt
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 229920001971 elastomer Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 2
- 238000011056 performance test Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
-
- 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
- G01M13/04—Bearings
Abstract
The invention belongs to a test technology of a central elastic bearing performance test device, and relates to a central elastic bearing test product torsional rigidity test loading device. The device consists of a fixed bolt, a fixed outer joint, a radial loading joint, a rolling bearing, an outer joint bolt, an outer joint nut, a bearing retainer ring, a torsion joint, a torsion ring, a torsion bolt, an inner joint bolt and an inner joint nut. The test device can realize torque application of the central elastic bearing under the action of the radial load only by assembling the rolling bearing meeting the radial load requirement in the inner hole of the radial loading joint, and has the advantages of simplicity, strong operability, higher test precision and higher working efficiency.
Description
Technical Field
The invention belongs to a test technology of a central elastic bearing performance test device, and relates to a central elastic bearing test product torsional rigidity test loading device.
Background
The elastic bearing is a metal and rubber sandwich structure, the central elastic bearing mainly comprises an inner joint, an outer joint and an elastic body, wherein the elastic body is formed by laminating and vulcanizing a metal spacer and rubber, and then is integrated with the inner joint and the outer joint which are formed by machining an aluminum alloy forging through vulcanization adhesion.
The elastic bearing is an important bearing part of a helicopter rotor system, replaces flapping, shimmy and torsional hinges on the traditional rotor, realizes free motion of flapping, shimmy and variable pitch of a blade through rubber deformation of the elastic bearing, and has extremely complex stress conditions in the working process, so that a special rigidity test loading device needs to be designed before trial production, shaping, installation or batch production of products, and whether various performances of the manufactured elastic bearing meet the requirements of design indexes is tested to test whether the design and production process of the elastic bearing can meet the requirements of product performance and quality.
As a novel structure elastic bearing, the central elastic bearing has no performance test device for the structure elastic bearing at home at present, and relevant published documents are not searched abroad.
Disclosure of Invention
The purpose of the invention is as follows: a torsion rigidity testing loading device for a central elastic bearing is designed to meet the requirement of torsion rigidity testing load application of the central elastic bearing under the action of radial load, and the torsion rigidity testing device and an angle measuring system complete the torsion rigidity testing of the central elastic bearing.
The technical scheme of the invention is as follows:
a central elastic bearing torsional rigidity test loading device, the central elastic bearing includes: inner joint, outer joint and elastomer; one end of the inner joint is of a conical structure, a flange plate is arranged at the bottom of the conical structure, eight first mounting holes are formed in the flange plate, and the other end of the inner joint is arc-shaped; an elastic body is sleeved outside one arc-shaped end of the inner joint; the elastic body is sleeved with an outer joint, the outer joint is provided with four bosses along the radial direction, and each boss is provided with an axial mounting hole;
the device comprises: the device comprises a fixed bolt, an outer joint, a radial loading joint, an outer joint bolt, an outer joint nut, a torsion joint, an inner joint bolt and an inner joint nut;
the outer joint comprises a bottom plate and a vertical plate; the vertical plate is fixed in the middle of the bottom plate; the fixing bolt fixes the outer joint bottom plate on the test bed;
a first through hole is formed in the outer joint vertical plate, and four bolt holes are formed in the periphery of the first through hole; the central elastic bearing outer joint is arranged in the first through hole; the outer joint bolt penetrates through the bolt hole and fixes the outer joint of the central elastic bearing on the outer joint vertical plate through a nut;
the torsion joint consists of a first cylinder and a second cylinder which are concentric; the diameter of the first cylinder is larger than that of the second cylinder, and the second cylinder is fixedly arranged in the center of the right side face of the first cylinder; eight second mounting holes are formed in the edge of the first cylinder along the axial direction; the inner joint bolt penetrates through the first mounting hole and the second mounting hole and fixedly connects the torsion joint with the inner joint of the central elastic bearing through the inner joint nut; the torsion joint is used for transmitting torque to the central elastic bearing;
the radial loading joint is a cuboid, and a second through hole is formed in the radial loading joint along the axial direction of the central elastic bearing; the radial loading joint is sleeved on the outer side surface of the first cylinder of the torsion joint.
Furthermore, the diameter of the annular boss of the torsional joint is the same as that of the flange plate of the inner joint of the central elastic bearing.
Further, the device further comprises a rolling bearing; and the rolling bearing is arranged between the inner side wall of the second through hole of the radial loading joint and the outer side surface of the first cylinder of the torsion joint.
Furthermore, two ends of the outer side surface of the first cylinder of the torsion joint are provided with annular grooves; and a bearing retainer ring is arranged in the annular groove and is used for preventing the rolling bearing from sliding out.
Further, the device also comprises a torsion ring and a torsion bolt; the right end face of the second cylinder of the torsion joint is provided with four threaded holes; the center of the torsion ring is provided with four third through holes with the same diameter as the threaded holes;
and the torsion bolt penetrates through the third through hole from right to left and is screwed into the threaded hole.
Furthermore, the height of the upper end face of the radial loading joint is higher than that of the upper end face of the external joint.
Further, the height of the upper end face of the radial loading joint is also higher than the highest point of the torsion ring.
Further, the outer side surface of the torsion ring is provided with an annular groove, and the annular groove is used for placing a steel wire rope to apply torque.
The invention has the beneficial effects that: according to the invention, by designing a set of central elastic bearing torsional rigidity test loading device, the central elastic bearing which is a novel structure elastic bearing can also apply torque after being subjected to the action of radial load, so that the torsional rigidity test under the action of the radial load is realized. The test device can realize torque application of the central elastic bearing under the action of the radial load only by assembling the rolling bearing meeting the radial load requirement in the inner hole of the radial loading joint, and has the advantages of simplicity, strong operability, higher test precision and higher working efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a central elastic bearing torsional rigidity test loading device;
FIG. 2 is a plan view of a central elastomeric bearing torsional stiffness test loading device;
FIG. 3 is a schematic view of a central elastomeric bearing configuration;
FIG. 4 is a schematic view of a torsional joint;
in the figure, 1 is a fixing bolt, 2 is an outer joint, 3 is a radial loading joint, 4 is a rolling bearing, 5 is an outer joint bolt, 6 is an outer joint nut, 7 is a bearing retainer ring, 8 is a torsion joint, 8-1 is a torsion joint circular groove, 8-2 is a torsion joint through hole, 8-3 is a torsion joint threaded hole, 9 is a torsion ring, 10 is a torsion bolt, 11 is an inner joint bolt, 12 is an inner joint nut, 13 is a central elastic bearing outer joint, and 14 is a central elastic bearing inner joint.
Detailed Description
The design method according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the central elastic bearing torsional rigidity test loading device is composed of a fixing bolt 1, an outer joint 2, a radial loading joint 3, a rolling bearing 4, an outer joint bolt 5, an outer joint nut 6, a bearing retainer 7, a torsional joint 8, a torsional ring 9, a torsional bolt 10, an inner joint bolt 11 and an inner joint nut 12. The test device is characterized in that a rolling bearing 4 capable of bearing large radial load is arranged in an inner hole of the radial loading joint 3, so that after the central elastic bearing inner joint 14 is subjected to vertical downward radial load, torque can still be applied to the central elastic bearing inner joint through the torsion joint 8 and the torsion ring 9, and therefore torsional rigidity test under the action of the radial load is achieved. The schematic diagram of the structure of the central elastic bearing is shown in fig. 3, the torsion joint 8 is shown in fig. 4, the annular grooves 8-1 on the left and right sides are used for placing the bearing retainer 7 to prevent the inner ring of the rolling bearing 4 from sliding out due to rotation in the process of applying torque, the torsion joint through hole 8-2 is used for placing the inner joint bolt 11 to fixedly connect the central elastic bearing inner joint 14 with the torsion joint 8, and the torsion joint threaded hole 8-3 is used for fixing the torsion ring 9 on the torsion joint 8 through the torsion bolt 10, so that torque is applied to the central elastic bearing inner joint through the torsion ring 9.
During test installation, firstly, the outer joint 2 is fixed below the load applying device by the fixing bolt 1, and then the central elastic bearing outer joint 13 is fixed in an inner hole of the outer joint 2 by the outer joint bolt 5 and the outer joint nut 6; secondly, placing the torsion joint 8 into an inner hole of the radial loading joint 3 provided with the rolling bearing 4, placing bearing retainer rings 7 into annular grooves 8-1 at the left side and the right side of the torsion joint 8 to prevent an inner ring of the rolling bearing 4 from sliding out due to rotation in the process of applying torque, and then fixing the central elastic bearing inner joint and the torsion joint 8 together by using an inner joint bolt 11 and an inner joint nut 12; finally, the torsion ring 9 is fixed in the threaded hole 8-3 of the torsion joint 8 by the torsion bolt 10.
After the installation is finished, a rated radial load is applied to the upper end of the radial loading joint 3 by using a load applying device, and then torques are respectively applied to the upper end and the lower end of the torsion ring 9 by using a steel cable and an elastic thread sleeve, so that the torsional rigidity test of the central elastic bearing under the action of the rated radial load can be finished.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the original scope of the invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A central elastic bearing torsional rigidity test loading device, the central elastic bearing includes: inner joint, outer joint and elastomer; one end of the inner joint is of a conical structure, a flange plate is arranged at the bottom of the conical structure, eight first mounting holes are formed in the flange plate, and the other end of the inner joint is arc-shaped; an elastic body is sleeved outside one arc-shaped end of the inner joint; the elastic body is sleeved with an outer joint, the outer joint is provided with four bosses along the radial direction, and each boss is provided with an axial mounting hole;
the method is characterized in that: the device comprises: the device comprises a fixed bolt, an outer joint, a radial loading joint, an outer joint bolt, an outer joint nut, a torsion joint, an inner joint bolt and an inner joint nut;
the outer joint comprises a bottom plate and a vertical plate; the vertical plate is fixed in the middle of the bottom plate; the fixing bolt fixes the outer joint bottom plate on the test bed;
a first through hole is formed in the outer joint vertical plate, and four bolt holes are formed in the periphery of the first through hole; the central elastic bearing outer joint is arranged in the first through hole; the outer joint bolt penetrates through the bolt hole and fixes the outer joint of the central elastic bearing on the outer joint vertical plate through a nut;
the torsion joint consists of a first cylinder and a second cylinder which are concentric; the diameter of the first cylinder is larger than that of the second cylinder, and the second cylinder is fixedly arranged in the center of the right side face of the first cylinder; eight second mounting holes are formed in the edge of the first cylinder along the axial direction; the inner joint bolt penetrates through the first mounting hole and the second mounting hole and fixedly connects the torsion joint with the inner joint of the central elastic bearing through the inner joint nut; the torsion joint is used for transmitting torque to the central elastic bearing;
the radial loading joint is a cuboid, and a second through hole is formed in the radial loading joint along the axial direction of the central elastic bearing; the radial loading joint is sleeved on the outer side surface of the first cylinder of the torsion joint.
2. The central elastic bearing torsional rigidity test loading device according to claim 1, characterized in that: the diameter of the annular boss of the torsional joint is the same as that of the flange plate of the inner joint of the central elastic bearing.
3. The central elastic bearing torsional rigidity test loading device according to claim 2, characterized in that: the device further comprises a rolling bearing;
and the rolling bearing is arranged between the inner side wall of the second through hole of the radial loading joint and the outer side surface of the first cylinder of the torsion joint.
4. The central elastic bearing torsional rigidity test loading device according to claim 3, characterized in that: two ends of the outer side surface of the first cylinder of the torsion joint are provided with annular grooves; and a bearing retainer ring is arranged in the annular groove and is used for preventing the rolling bearing from sliding out.
5. The central elastic bearing torsional rigidity test loading device of claim 4, wherein: the device further comprises a torsion ring and a torsion bolt;
the right end face of the second cylinder of the torsion joint is provided with four threaded holes; the center of the torsion ring is provided with four third through holes with the same diameter as the threaded holes;
and the torsion bolt penetrates through the third through hole from right to left and is screwed into the threaded hole.
6. The central elastic bearing torsional rigidity test loading device of claim 5, wherein: the height of the upper end face of the radial loading joint is higher than that of the upper end face of the outer joint.
7. The central elastic bearing torsional rigidity test loading device of claim 6, wherein: the height of the upper end surface of the radial loading joint is also higher than the highest point of the torsion ring.
8. The central elastic bearing torsional rigidity test loading device of claim 7, wherein: the outer side surface of the torsion ring is provided with an annular groove, and the annular groove is used for placing a steel wire rope to apply torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316581.1A CN112461464A (en) | 2020-11-20 | 2020-11-20 | Torsion rigidity test loading device for central elastic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316581.1A CN112461464A (en) | 2020-11-20 | 2020-11-20 | Torsion rigidity test loading device for central elastic bearing |
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| Publication Number | Publication Date |
|---|---|
| CN112461464A true CN112461464A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011316581.1A Pending CN112461464A (en) | 2020-11-20 | 2020-11-20 | Torsion rigidity test loading device for central elastic bearing |
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| CN (1) | CN112461464A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878878A (en) * | 2023-09-05 | 2023-10-13 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
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| JP2014167471A (en) * | 2013-02-01 | 2014-09-11 | Toshihiro Ozasa | Bearing testing device |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| CN104280241A (en) * | 2014-10-14 | 2015-01-14 | 合肥工业大学 | Helicopter rotor system elastic bearing load measuring device |
| CN105758641A (en) * | 2014-12-19 | 2016-07-13 | 中国直升机设计研究所 | Axial performance testing device for rod-end elastic bearing |
| CN109580225A (en) * | 2019-01-09 | 2019-04-05 | 哈尔滨理工大学 | A kind of bearing test-bed radial loading device |
| CN110701186A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Combined elastic bearing |
| US20200063793A1 (en) * | 2016-11-28 | 2020-02-27 | Tq-Systems Gmbh | Power transmission elements, torque measuring device and freewheel assembly |
| CN111638131A (en) * | 2020-06-30 | 2020-09-08 | 株洲时代新材料科技股份有限公司 | Rubber bearing composite loading test device and test method |
-
2020
- 2020-11-20 CN CN202011316581.1A patent/CN112461464A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010185680A (en) * | 2009-02-10 | 2010-08-26 | Ihi Corp | Axial load application apparatus |
| CN201837533U (en) * | 2010-03-22 | 2011-05-18 | 株洲时代新材料科技股份有限公司 | Loading fatigue tester for radial, axial, shearing and torsion directions of rubber elastic assembly |
| CN102269654A (en) * | 2011-05-10 | 2011-12-07 | 重庆大学 | Water lubricated bearing and transmission system comprehensive performance testing platform |
| JP2014167471A (en) * | 2013-02-01 | 2014-09-11 | Toshihiro Ozasa | Bearing testing device |
| CN104236906A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Device for testing radial rigidity of tail rotor steady bearings |
| CN104280241A (en) * | 2014-10-14 | 2015-01-14 | 合肥工业大学 | Helicopter rotor system elastic bearing load measuring device |
| CN105758641A (en) * | 2014-12-19 | 2016-07-13 | 中国直升机设计研究所 | Axial performance testing device for rod-end elastic bearing |
| US20200063793A1 (en) * | 2016-11-28 | 2020-02-27 | Tq-Systems Gmbh | Power transmission elements, torque measuring device and freewheel assembly |
| CN109580225A (en) * | 2019-01-09 | 2019-04-05 | 哈尔滨理工大学 | A kind of bearing test-bed radial loading device |
| CN110701186A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Combined elastic bearing |
| CN111638131A (en) * | 2020-06-30 | 2020-09-08 | 株洲时代新材料科技股份有限公司 | Rubber bearing composite loading test device and test method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116878878A (en) * | 2023-09-05 | 2023-10-13 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
| CN116878878B (en) * | 2023-09-05 | 2023-11-14 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
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Application publication date: 20210309 |
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