CN109211497A - A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine - Google Patents
A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine Download PDFInfo
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- CN109211497A CN109211497A CN201810756835.8A CN201810756835A CN109211497A CN 109211497 A CN109211497 A CN 109211497A CN 201810756835 A CN201810756835 A CN 201810756835A CN 109211497 A CN109211497 A CN 109211497A
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- Prior art keywords
- exciting force
- electro spindle
- screw rod
- dynamic stiffness
- cylinder
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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
- 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
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The present invention relates to the full stator fulcrum dynamic stiffness of engine to test field, in particular to a kind of full stator fulcrum dynamic stiffness of engine tests exciting force loading device.It include: rack (3), cylinder, screw rod, electro spindle (9) and Drive assembly (10).The full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device, the exciting force for driving eccentric mass to generate by electro spindle (9) increases with the raising of electro spindle (9) revolving speed, constantly reduce compared to conventional method exciting force and compare, has a clear superiority；Exciting force application position is flexible, adjustable position, is loaded for each position fulcrum on testpieces；It is gap-matched in connection, cross force will not be transmitted, the obvious vibration of experimental rig will not be caused.
Description
Technical field
The present invention relates to the full stator fulcrum dynamic stiffness of engine to test field, in particular to a kind of full stator fulcrum of engine
Dynamic stiffness tests exciting force loading device.
Background technique
In order to obtain each fulcrum radial direction dynamic flexibility of full stator casing, need to apply exciting force to each fulcrum of casing.Traditional machine
Casket loading structure as shown in Figure 1, it by bracket 101, load lever 102, electromagnetic vibration generator system 103, pull rod 104, force snesor
105, dummy shaft 106, main installation section simulating boundary 107, casing 108 form.Traditional casing load uses lever Indirect Loaded side
Formula loads 106 mechanism of lever 102- dummy shaft by force snesor 105- and radial exciting force is finally passed to machine by shake table
Casket fulcrum, load 102 other end of lever are supported by being connected to the bracket 101 on ground, and eddy current displacement sensor is applied in test
Displacement pickup is carried out to dummy shaft 106 and 108 periphery of casing, the exciting that electromagnetic vibration generator system 103 loads is acquired by force snesor 105
Force signal.
Traditional lever-loading mode, for shake table due to the limitation of output power, the amplitude for generating vibration can be with frequency
Increase and reduces.Simultaneously because test uses lever-loading, part exciting force can act on bracket, so that acting on casing
Exciting force reduces, and the inertia force that experiment loading unit vibration generates can make the exciting force for being really applied to casing fulcrum further
Reduce, this point is more obvious in frequency dither.Therefore the vibration of the exciting force applied and generation is rung when frequency is higher
It should not reach requirement, seriously affect effective transmitting of the exciting force to testpieces, needed to improve, to improve exciting force transmitting
Efficiency.
Summary of the invention
The object of the present invention is to provide a kind of full stator fulcrum dynamic stiffness of engine to test exciting force loading device, with solution
At least one problem certainly of the existing technology.
The technical scheme is that
A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine, comprising:
Rack is provided with clamping rings on the rack；
Cylinder, including positioning cylinder and the upper cylinder of test, the positioning cylinder are mounted on described by the clamping rings
On rack, one end of cylinder is connect with the positioning cylinder in the test；
Screw rod, including the first screw rod and the second screw rod, first screw rod and second screw rod and the positioning cylinder
It is fixedly connected, and first screw rod is connect with second screw rod by turning the stage；
Electro spindle is mounted on the other end of cylinder in the test；
Exciting bank is mounted on one end far from cylinder in the test on the electro spindle.
Optionally, described to turn the stage and offer circular hole, adjustment pin is provided on the circular hole.
Optionally, the Drive assembly includes: stator, end cap, rotor, bearing, ring flange, torsion pass pin, electro spindle connection
Flange, disk and key；Wherein,
The stator and each fulcrum shaft bearing seat contact of casing, the end cap and the stator are connected, the rotor engagement axis
Bearing sleeve is located in the end cap, offers threaded hole on the rotor, and the threaded hole is used for mounting screw, and the two of the rotor
End offers keyway, installation key in the keyway, the both ends end of the rotor cooperates disk mounting flange, wherein one end
The ring flange is connect by torsion pass pin with electro spindle connecting flange, and the electro spindle connecting flange is main for connecting the electricity
Axis, the electro spindle drive the rotor rotation by electro spindle connecting flange, torsion pass pin, ring flange, key.
It optionally, is clearance fit between the ring flange and the torsion pass pin.
Invention effect:
The full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device, and electro spindle position can carry out certainly
By adjusting, application convenient for Drive assembly to the exciting force of testpieces, structure is simple, high-efficient.
Detailed description of the invention
Fig. 1 is the full stator fulcrum dynamic stiffness test exciting force loading device schematic diagram of existing engine；
Fig. 2 is the overall schematic that the full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device；
Fig. 3 is the mounting assembly signal of the full stator fulcrum dynamic stiffness test exciting force loading device of engine of the invention
Figure；
Fig. 4 is the disk schematic diagram that the full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
2 to 4 pairs of engines of the invention of attached drawing full stator fulcrum dynamic stiffness test exciting force load dress with reference to the accompanying drawing
It sets and is described in further details.
The present invention provides a kind of full stator fulcrum dynamic stiffness of engine to test exciting force loading device, may include: platform
Frame 3, cylinder, screw rod, electro spindle 9 and Drive assembly 10.
Specifically, clamping rings 6 is provided on rack 3；Cylinder includes positioning cylinder 1 and tests upper cylinder 7, positions cylinder
1 is mounted on rack 3 by clamping rings 6, and one end of cylinder 7 is connect with positioning cylinder 1 in test；Screw rod includes the first screw rod
2 and second screw rod 5, the first screw rod 2 and the second screw rod 5 be fixedly connected with positioning cylinder 1, and the first screw rod 2 and the second screw rod 5 lead to
It crosses and turns the connection of stage 4；Electro spindle 9 is mounted on the other end for testing upper cylinder 7；Drive assembly 10 is mounted on separate on electro spindle 9
One end of cylinder 7 in test.In the present embodiment, circular hole preferably is offered turning the stage 4, adjustment pin 8 is provided on circular hole, with logical
Overregulate the position of the adjustable positioning cylinder 1 of the first screw rod 2.
Further, the Drive assembly 10 of the full stator fulcrum dynamic stiffness test exciting force loading device of engine of the invention wraps
It includes: stator 11, end cap 12, rotor 13, bearing 14, ring flange 15, torsion pass pin 16, electro spindle connecting flange 17, disk 18 and key
19；Wherein, stator 11 and each fulcrum shaft bearing seat contact of casing, end cap 12 and stator 11 are connected, and 13 fitted bearing 14 of rotor is arranged
In end cap 12, threaded hole is offered on rotor 13, threaded hole is used for mounting screw, and the both ends of rotor 13 offer keyway, key
The both ends end of installation key 19 in slot, rotor 13 cooperates 18 mounting flange 15 of disk, and wherein the ring flange 15 of one end passes through biography
Twist pin 16 is connect with electro spindle connecting flange 17, and for electro spindle connecting flange 17 for connecting electro spindle 9, electro spindle 9 is main by electricity
Axis connection flange 17, torsion pass pin 16, ring flange 15, key 19 drive rotor 13 to rotate.In the present embodiment, preferably ring flange 15 and pass
It is clearance fit between twist pin 16, cross force will not be transmitted, it is ensured that the exciting force of generation can not be passed out by torsion pass pin 16
It goes, has not only ensured the application of exciting force, but also not will cause the obvious vibration of entire experimental rig.
The full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device, and electro spindle 9 passes through positioning cylinder
1, cylinder 7 and clamping rings 6 are mounted on rack 3 in test.The installation and adjustment pin 8 on the circular hole on group section 4, by setting circle
Cylinder 1 is fixed together with the first screw rod 2, the second screw rod 5 and group section 4, by adjusting the first screw rod 2 adjustment positioning cylinder 1
Position, it can be ensured that the exciting bank 10 being connect with electro spindle 9 can to fulcrum each on full stator casing apply exciting force.Swash
The scheme of installation of component 10 is encouraged as shown in figure 3, Drive assembly is mounted on each fulcrum roller seat in test, wherein stator 11
With each fulcrum shaft bearing seat contact of casing, as eccentric mass, electro spindle 9 passes through the screw thread hole site mounting screw on rotor 13
Electro spindle connecting flange 17, torsion pass pin 16, ring flange 15, key 19 drive rotor 13 to rotate, and due to the influence of eccentric mass, are turning
Out-of-balance force can be generated in sub 15 rotary courses, which is acted on stator 13 by bearing 14 and end cap 12, in turn
Exciting force is generated to each fulcrum roller seat of casing, is wherein connected between electro spindle connecting flange 17 and ring flange 15 by torsion pass pin 16
It connects, is clearance fit between torsion pass pin 16 and ring flange 15, cross force will not be transmitted, it is ensured that the exciting force of generation can not pass through
Torsion pass pin 16 passes, and has not only ensured the application of exciting force, but also not will cause the obvious vibration of entire experimental rig.The device
The frequency and size of exciting force can be needed to change by the revolving speed for adjusting electro spindle 9 according to test.
In conclusion the full stator fulcrum dynamic stiffness of engine of the invention tests exciting force loading device, pass through electro spindle 9
The exciting force for driving eccentric mass to generate increases with the raising of 9 revolving speed of electro spindle, constantly subtracts compared to conventional method exciting force
It is small to compare, it has a clear superiority；Exciting force application position is flexible, adjustable position, is that each position fulcrum carries out on testpieces
Load；It is gap-matched in connection, cross force will not be transmitted, the obvious vibration of experimental rig will not be caused.The device generates
Exciting force can increase with the raising of 9 revolving speed of electro spindle, i.e., the amplitude of exciting force can increase with the increase of excited frequency
Greatly, the limitation due to shake table output power is avoided, vibration amplitude reduces as frequency increases, it is ensured that test load dress
Setting effectively to apply exciting force to each fulcrum of casing.Meanwhile exciting force directly acts on testpieces, avoids due to lever
Load causes the loss of power.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (4)
1. a kind of full stator fulcrum dynamic stiffness of engine tests exciting force loading device characterized by comprising
Rack (3) is provided with clamping rings (6) on the rack (3)；
Cylinder, including positioning cylinder (1) and test are above cylinder (7), the positioning cylinder (1) passes through the clamping rings (6) and pacifies
On the rack (3), one end of cylinder (7) is connect with the positioning cylinder (1) in the test；
Screw rod, including the first screw rod (2) and the second screw rod (5), first screw rod (2) and second screw rod (5) with it is described
Positioning cylinder (1) is fixedly connected, and first screw rod (2) is connect with second screw rod (5) by turning the stage (4)；
Electro spindle (9) is mounted on the other end of cylinder (7) in the test；
Drive assembly (10) is mounted on one end far from cylinder (7) in the test on the electro spindle (9).
2. the full stator fulcrum dynamic stiffness of engine according to claim 1 tests exciting force loading device, which is characterized in that
It is described to turn the stage (4) and offer circular hole, adjustment pin (8) are provided on the circular hole.
3. the full stator fulcrum dynamic stiffness of engine according to claim 1 tests exciting force loading device, which is characterized in that
The Drive assembly (10) includes: stator (11), end cap (12), rotor (13), bearing (14), ring flange (15), torsion pass pin
(16), electro spindle connecting flange (17), disk (18) and key (19)；Wherein,
The stator (11) and each fulcrum shaft bearing seat contact of casing, the end cap (12) and the stator (11) are connected, and described turn
Sub (13) fitted bearing (14) is set in the end cap (12), offers threaded hole, the threaded hole on the rotor (13)
For mounting screw, the both ends of the rotor (13) offer keyway, installation key (19) in the keyway, the rotor (13)
Both ends end cooperates disk (18) mounting flange (15), and wherein the ring flange (15) of one end passes through torsion pass pin (16) and electricity
Main shaft connecting flange (17) connection, the electro spindle connecting flange (17) is for connecting the electro spindle (9), the electro spindle
(9) rotor (13) rotation is driven by electro spindle connecting flange (17), torsion pass pin (16), ring flange (15), key (19).
4. the full stator fulcrum dynamic stiffness of engine according to claim 3 tests exciting force loading device, which is characterized in that
It is clearance fit between the ring flange (15) and the torsion pass pin (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756835.8A CN109211497A (en) | 2018-07-11 | 2018-07-11 | A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756835.8A CN109211497A (en) | 2018-07-11 | 2018-07-11 | A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109211497A true CN109211497A (en) | 2019-01-15 |
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| CN201810756835.8A Pending CN109211497A (en) | 2018-07-11 | 2018-07-11 | A kind of full stator fulcrum dynamic stiffness test exciting force loading device of engine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109506A (en) * | 1976-12-02 | 1978-08-29 | Fiat Societa Per Azioni | Device for monitoring the lubrication of the crankshaft of a reciprocating internal combustion engine |
| CN2239298Y (en) * | 1995-04-11 | 1996-11-06 | 包头市永磁电机研究所 | Exciter |
| CN103592111A (en) * | 2013-10-29 | 2014-02-19 | 无锡市海航电液伺服系统有限公司 | Simulation load balancing method and device for aircraft engine crankcase strength tests |
| CN105043753A (en) * | 2015-09-07 | 2015-11-11 | 河北工程大学 | Vehicle body installation fixing point static rigidity test bench and test method thereof |
| CN205958238U (en) * | 2016-06-28 | 2017-02-15 | 中航商用航空发动机有限责任公司 | Stiffness detection system of radially moving of aeroengine support case |
-
2018
- 2018-07-11 CN CN201810756835.8A patent/CN109211497A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109506A (en) * | 1976-12-02 | 1978-08-29 | Fiat Societa Per Azioni | Device for monitoring the lubrication of the crankshaft of a reciprocating internal combustion engine |
| CN2239298Y (en) * | 1995-04-11 | 1996-11-06 | 包头市永磁电机研究所 | Exciter |
| CN103592111A (en) * | 2013-10-29 | 2014-02-19 | 无锡市海航电液伺服系统有限公司 | Simulation load balancing method and device for aircraft engine crankcase strength tests |
| CN105043753A (en) * | 2015-09-07 | 2015-11-11 | 河北工程大学 | Vehicle body installation fixing point static rigidity test bench and test method thereof |
| CN205958238U (en) * | 2016-06-28 | 2017-02-15 | 中航商用航空发动机有限责任公司 | Stiffness detection system of radially moving of aeroengine support case |
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Application publication date: 20190115 |
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