CN106066244B - A kind of large inertia torsional flexibility load simulating device - Google Patents
A kind of large inertia torsional flexibility load simulating device Download PDFInfo
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- CN106066244B CN106066244B CN201610630903.7A CN201610630903A CN106066244B CN 106066244 B CN106066244 B CN 106066244B CN 201610630903 A CN201610630903 A CN 201610630903A CN 106066244 B CN106066244 B CN 106066244B
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- single pendulum
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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
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Abstract
The invention discloses a kind of large inertia torsional flexibility load simulating device, the shape and size of two vertical strutbeams are consistent, are provided with elongated slot among it, and lower end is bolted with mounting disc, and upper end is connect by bolt with horizontal strutbeam；Bearing block is fixed by bolts among two vertical strutbeams, and bearing block can be slided up and down along elongated slot；Bearing block is attached with bearing inner race by interference fit；It is provided with circular hole among single pendulum beam, is connect by being interference fitted with bearing outer ring；Single pendulum beam both ends are attached by bolt and two single pendulum mass blocks；Tapped through hole is provided among single pendulum mass block, its underpart can be connect by bolt with weight mass block, and top is tightened by threaded hole and external screw thread hanging ring；Through-hole there are six opening on horizontal strutbeam, is connect by bolt with internal screw thread hanging ring；It will be attached between external screw thread hanging ring and corresponding internal screw thread hanging ring by wirerope.The simulator can produce the simple pendulum oscillation of three torsional freedoms under dynamic excitation.
Description
Technical field
The present invention relates to a kind of large inertia torsional flexibility load simulating devices, can be used for the simulated solar wing, to realize its ground
Face dynamic test.
Background technique
Current spacecraft belongs to large-scale flexible expansion mechanism mostly, and has a large amount of optical element, they are right
Pointing accuracy and stability propose very high requirement.In addition, in modern spacecraft attitude control system, reaction wheel,
Single frame moment gyro and solar wing driving mechanism etc. are the critical elements in its control system, they are providing necessary control
While power, it can also cause some nuisance vibrations (above-mentioned three germline completely for the sake of simplicity, is known as disturbing source below).This
Wherein, low frequency range is concentrated in the disturbance that torsional freedom generates when the operation of solar wing driving mechanism driving solar wing, with height
The time for exposure of the development of rail remote sensing satellite, camera significantly extends, and the working performance of satellite is more sensitive to low-frequency excitation, therefore
Disturbance characteristic test and research when the driving solar wing operation of solar wing driving mechanism is carried out on ground have very important work
Cheng Yiyi.
True sun wing-like, size, quality, rotary inertia and flexibility are all very big, are difficult under gravity environment
Directly it is unfolded, therefore solar wing driving mechanism is directly tested by ground experiment, disturbance characteristic when solar wing operation is driven to be difficult to
It realizes, it is very necessary to design the fictitious load that rotary inertia is big, eigentone is low.
Currently, both at home and abroad there is not yet the reported in literature in relation to such large inertia torsional flexibility load simulating device.
Summary of the invention
The technical problem to be solved by the present invention is it is negative to overcome the deficiencies of the prior art and provide a kind of large inertia torsional flexibility
Simulator is carried, for simulating true solar wing, solar wing driving mechanism is tested by ground experiment, the simulator is driven to transport
Disturbance characteristic when row, with realize to solar wing driving mechanism drive true solar wing in orbit when produced disturbance it is pre-
Meter.
The invention solves technical solutions used by its technical problem to be: a kind of large inertia torsional flexibility load simulation dress
It sets, as shown in figure 4, including mounting disc, two vertical strutbeams, horizontal strutbeam, three single pendulum beams, six single pendulum mass blocks, counterweights
Mass block, three bearing blocks, three groups of wirerope, six internal screw thread hanging rings, six external screw thread hanging rings and three bearings；Three groups of steel
Every group of cord is made of the identical wirerope of two root long degree, and an external screw thread hanging ring and an internal screw thread hanging ring form one group and hang
Ring forms six groups of hanging rings altogether, and the shape and size of two vertical strutbeams are consistent, are provided with elongated slot among it；Two vertical strutbeams
Lower end is connect by bolt with mounting disc；Two vertical strutbeam upper ends are connect by bolt with horizontal strutbeam；Three bearing blocks are logical
It crosses bolt to be fixed among two vertical strutbeams, and can be slided up and down along elongated slot；Three bearing blocks pass through with three bearing inner races
Interference fit is attached；It is provided with circular hole among three single pendulum beams, is connect by being interference fitted with three bearing outer rings；Three lists
Balance arm both ends are attached by bolt and six single pendulum mass blocks；It is provided with tapped through hole among six single pendulum mass blocks, under
Portion can be connect by bolt with weight mass block, and top is tightened by threaded hole and six external screw thread hanging rings；It is opened on horizontal strutbeam
There are six through-holes, are connect by bolt with six internal screw thread hanging rings；Six external screw thread hanging rings are hung with corresponding six internal screw threads
It is attached between ring by three groups of wirerope.The simulator can produce the single pendulum of three torsional freedoms under dynamic excitation
Vibration, and can be by adjusting the number of weight mass block and the length realization of three groups of wirerope to rotary inertia and simple pendulum oscillation frequency
The adjusting of rate, to realize the simulation loaded to torsional flexibility.
Wherein, six single pendulum quality stock materials are steel, to improve the rotary inertia of simulator.
Wherein, the weight mass stock material is steel, to improve the rotary inertia of simulator.
Wherein, the material of described two vertical strutbeams is steel, and shape and size are consistent, and are provided with length in centre
Slot, to guarantee that three bearing blocks can slide up and down.
Wherein, the horizontal strutbeam is square steel, mitigates the weight of simulator while guaranteeing rigidity.
Wherein, all bolted on part are both needed to tighten, to reduce the unnecessary damping effect item of simulator.
Wherein, three bearing blocks can be slided up and down along the elongated slot of two vertical strutbeams, to guarantee to choose different length
Simulator works normally when spending wirerope, to realize the adjusting to simple pendulum oscillation frequency.
Wherein, the quantity that the weight mass block is mounted on single pendulum mass block is adjustable, to realize to simulator
The adjusting of each rank simple pendulum oscillation rotary inertia.
Compared with the prior art, the present invention has the following advantages:
(1) present invention can produce the simple twisting vibration of three ranks under extraneous incentive action, to can realize soft to reversing
Property load simulation while do not introduce the vibrations of other freedom degrees.
(2) present invention is by choosing the wirerope of different length, it can be achieved that adjusting to three rank torsion vibration natural frequencies,
To realize that the flexible load to different flexibilities is simulated.
(3) present invention can be achieved to turn three rank twisting vibrations by adjusting the weight mass block being mounted on single pendulum mass block
The adjusting of dynamic inertia, to can realize that the flexible load to different rotary inertias is simulated.
(4) length of three single pendulum beams of the invention is longer, and single pendulum mass block and weight mass block are steel material, mould
The rotary inertia of quasi- device is larger, it can be achieved that simulation to true solar wing.
Detailed description of the invention
Fig. 1 is single pendulum assembling schematic diagram in the embodiment of the present invention；
Fig. 2 is middle (center) bearing of the embodiment of the present invention, bearing block and single pendulum assembling schematic diagram；
Fig. 3 is bottom bracket of the embodiment of the present invention and vertical strutbeam assembling schematic diagram；
Fig. 4 is a kind of large inertia torsional flexibility load simulating device schematic diagram of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
As shown in Figure 1, three single pendulum beam both ends of the invention are attached by bolt and six single pendulum mass blocks；Six lists
Tapped through hole is provided among pendulum mass block, its underpart can be connect by bolt with weight mass block, and top passes through threaded hole and six
A external screw thread hanging ring is tightened；Through-hole there are six opening on horizontal strutbeam, is connect by bolt with six internal screw thread hanging rings；It is outer by six
It is attached between screw thread hanging ring and corresponding six internal screw thread hanging rings by three groups of wirerope.The simulator is in dynamic excitation
Under can produce the simple pendulum oscillations of three torsional freedoms, and can pass through and adjust the number of weight mass block and the length of three groups of wirerope
Degree realizes the adjusting to rotary inertia and simple pendulum oscillation frequency, to realize the simulation loaded to torsional flexibility.
As shown in Fig. 2, three bearing blocks of the invention are attached with three bearing inner races by interference fit；Three single pendulums
It is provided with circular hole among beam, is connect by being interference fitted with three bearing outer rings, it is only opposite between bearing block and single pendulum beam at this time
The freedom degree of rotation.
As shown in figure 3, three bearing blocks of the invention are attached by bolt and two vertical strutbeams；Two vertical strutbeams
Shape and size are consistent, and are provided with elongated slot thereon, and three bearing blocks can be slided up and down along the elongated slot of two vertical strutbeams, to protect
Simulator works normally when card chooses different length wirerope, to realize the adjusting to simple pendulum oscillation frequency.
In embodiment, the material of six single pendulum mass blocks and weight mass block is steel, to improve turning for simulator
Dynamic inertia；All bolted on part are both needed to tighten, to reduce the unnecessary damping effect item of simulator.Choose different length
Simulator works normally when wirerope, to realize the adjusting to simple pendulum oscillation frequency；Weight mass block is mounted on single pendulum matter
Quantity on gauge block is adjustable, to realize the adjusting to each rank simple pendulum oscillation rotary inertia of simulator.In conclusion of the invention
It is adjusted while rotary inertia can be achieved with intrinsic frequency, so that the simulation to the load of large inertia torsional flexibility can be realized.
Claims (8)
1. a kind of large inertia torsional flexibility load simulating device, which is characterized in that the simulator includes mounting disc (1), two
Vertical strutbeam (2), horizontal strutbeam (3), three single pendulum beams (4), six single pendulum mass blocks (5), weight mass block (6), three axis
Hold seat (7), three groups of wirerope (8), six internal screw thread hanging rings (9), six external screw thread hanging rings (10) and three bearings (11)；Three
Every group of group wirerope (8) is made of the identical wirerope of two root long degree, an external screw thread hanging ring and an internal screw thread hanging ring group
At one group of hanging ring, six groups of hanging rings are formed altogether, and the shape and size of two vertical strutbeams (2) are consistent, are provided with elongated slot among it；Two
The vertical strutbeam of root (2) lower end is connect by bolt with mounting disc (1)；Two vertical strutbeam (2) upper ends pass through bolt and horizontal branch
Beam (3) connection；It is intermediate that three bearing blocks (7) are fixed by bolts in two vertical strutbeams (2), and can slide up and down along elongated slot；
Three bearing blocks (7) are attached with three bearing (11) inner rings by interference fit；Circle is provided among three single pendulum beams (4)
Hole is connect by being interference fitted with three bearing (11) outer rings；Three single pendulum beam (4) both ends pass through bolt and six single pendulum quality
Block (5) is attached；It is provided with tapped through hole among six single pendulum mass blocks (5), its underpart can pass through bolt and weight mass block
(6) it connects, top is tightened by threaded hole with six external screw thread hanging rings (10)；Through-hole there are six opening on horizontal strutbeam (3), passes through
Bolt is connect with six internal screw thread hanging rings (9)；It will be between six external screw thread hanging rings (10) and corresponding six internal screw thread hanging rings (9)
It is attached by three groups of wirerope (8), which can produce the single pendulum vibration of three torsional freedoms under dynamic excitation
It is dynamic, and can be shaken by adjusting the length realization of the number and three groups of wirerope (8) of weight mass block (6) to rotary inertia and single pendulum
The adjusting of dynamic frequency, to realize the simulation loaded to torsional flexibility.
2. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: six single pendulums
Mass block (5) material is steel, to improve the rotary inertia of simulator.
3. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: the weight mass
Block (6) material is steel, to improve the rotary inertia of simulator.
4. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: described two are vertical
The material of strutbeam (2) is steel, and shape and size are consistent, and are provided with elongated slot in centre, to guarantee that three bearing blocks (7) can be with
It slides up and down.
5. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: the horizontal strutbeam
(3) it is square steel, mitigates the weight of simulator while guaranteeing rigidity.
6. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: all bolts
Coupling part is both needed to tighten, to reduce the unnecessary damping effect item of simulator.
7. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: three bearings
Seat (7) can be slided up and down along the elongated slot of two vertical strutbeams (2), simulator when guaranteeing to choose different length wirerope (8)
It works normally, to realize the adjusting to simple pendulum oscillation frequency.
8. large inertia torsional flexibility load simulating device according to claim 1, it is characterised in that: the weight mass
The quantity that block (6) is mounted on single pendulum mass block (5) is adjustable, to realize to each rank simple pendulum oscillation rotary inertia of simulator
It adjusts.
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| CN201610630903.7A CN106066244B (en) | 2016-08-04 | 2016-08-04 | A kind of large inertia torsional flexibility load simulating device |
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| CN201610630903.7A CN106066244B (en) | 2016-08-04 | 2016-08-04 | A kind of large inertia torsional flexibility load simulating device |
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| CN106066244B true CN106066244B (en) | 2019-02-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106289686B (en) * | 2016-11-09 | 2019-05-03 | 北京工业大学 | A kind of measurement method of harmonic gear reducer engagement torsion stiffness |
| CN107063598B (en) * | 2017-04-11 | 2019-09-27 | 北京航空航天大学 | A kind of labyrinth stiffness parameters automatic test platform |
| CN109406183B (en) * | 2018-11-15 | 2020-06-19 | 上海宇航系统工程研究所 | Small-size flexible load stabilizes drive control's experimental system |
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