CN106768785A - Middle low frequency impact spectrum torsion spring type measurement pendulum - Google Patents
Middle low frequency impact spectrum torsion spring type measurement pendulum Download PDFInfo
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- CN106768785A CN106768785A CN201710070482.1A CN201710070482A CN106768785A CN 106768785 A CN106768785 A CN 106768785A CN 201710070482 A CN201710070482 A CN 201710070482A CN 106768785 A CN106768785 A CN 106768785A
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- torsion spring
- shift fork
- chute
- swing rod
- hole
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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
- G01M7/08—Shock-testing
Abstract
A kind of middle low frequency impact spectrum torsion spring type measurement pendulum, measurement pendulum includes pedestal, torsion spring sleeve, swing rod, shift fork A, mass, torsion spring, support bar, shift fork B and sliding pin；Sliding pin has two, respectively sliding pin A and sliding pin B；From a structural point, the structure of rocking of its shock response spectrum torsion spring type of the low-frequency vibrator structure of relatively conventional low frequency impact spectrometry measurement pendulum can be convenient for carrying with the quality of alleviator and volume；With respect to reed instrument apparatus, shock measurement pendulum can avoid the plastic deformation of swing rod structure in the hinge arrangement of fixing end, to improve the service life of measurement apparatus.Functionally, shock response spectrum torsion spring type measurement pendulum is used directly for low-frequency range impact spectrometry, the measuring method of low-frequency range shock response spectrum in substitution reed instrument and low-frequency vibrator measurement in a closed series in measurement.For from metering system, rotation measuring is changed into straight-line displacement measurement by the cam structure of shock response spectrum torsion spring type measurement pendulum swing rod, and compact conformation, certainty of measurement is high.
Description
Technical field
The invention belongs to shock measurement technical field, it is related to a kind of shock measurement instrument, it is more particularly to a kind of for measuring
Middle low frequency impact spectrum torsion spring type measurement pendulum.
Background technology
At present, measurement shock response spectrum main method is using the mode time of measuring curve of accelerometer combination mechanical filter
Shock response spectrum is calculated, but accelerometer can evoke its resonance peak under thump, prevent the electric charge of generation from quick release, so that
Produce drift.Zero drift phenomenon can influence in low frequency impact spectrometry integrality and accuracy, its measured value differs with actual value
One or two order of magnitude, error is larger, is unfavorable for middle low-frequency range shock resistant technique operation index.Reed instrument and low frequency must be utilized
Two kinds of typical measuring arrangements of oscillator, the shock response spectrum obtained to accelerometer measures, the shock response spectrum of particularly middle low-frequency range is mended
Fill and be mutually authenticated.But, reed instrument and low-frequency vibrator all cannot the complete middle low frequency impact spectral curves of independent measurement acquisition, spring
Piece instrument, because end mass dynamic respond is than larger, causes reed instrument Root Stress excessive and occurs disconnected when low frequency spectrum is measured
Split；When low frequency spectrum is measured because frequency is low, the stretching of spring and decrement cause greatly spring oscillator more heavy to spring oscillator.
The content of the invention
Goal of the invention：It is existing at present the purpose is to solve that the present invention provides a kind of middle low frequency impact spectrum torsion spring type measurement pendulum
Problem.
Technical scheme：The present invention is achieved by the following technical solutions.
A kind of middle low frequency impact spectrum torsion spring type measurement pendulum, it is characterised in that：Measurement pendulum includes pedestal, torsion spring sleeve, pendulum
Bar, shift fork A, mass, torsion spring, support bar, shift fork B and sliding pin；Sliding pin has two, respectively sliding pin A and sliding pin B；
Torsion spring includes：Torsion spring arm A and torsion spring arm B；Torsion spring arm A and torsion spring arm B are the opposite U-shaped fastener of two opening directions, are turned round
Spring arm A and torsion spring arm B are divided into the two ends of torsion spring；
Torsion spring sleeve includes：Mounting groove A, chute A, locating surface A, mounting groove B, chute B and locating surface B；Mounting groove A and mounting groove
B extending axially inwardly along torsion spring sleeve from the two ends of torsion spring sleeve；Chute A is connected with mounting groove A and chute A is along torsion spring sleeve
Circumferencial direction extend, chute A and mounting groove A form T-shaped or L-shaped structure；Chute B is connected with mounting groove B and chute B is along torsion
The circumferencial direction of spring sleeve extends, and the bearing of trend of chute B is with the bearing of trend of chute A conversely, chute B and mounting groove B forms T
Font or L-shaped structure；The side wall of mounting groove A corresponding with chute A is locating surface B, the side wall of mounting groove B corresponding with chute B
It is locating surface A；
Swing rod includes：Articulated joint, swing rod contact surface A, hinge hole, swing rod chute A, connecting rod, swing rod contact surface B, swing rod chute B,
Swing rod chute A ends, swing rod chute B ends, cam curved surface and mass；Swing rod contact surface A and swing rod contact surface B are divided into hinge
The both sides of joint, swing rod chute A is arranged in swing rod contact surface A, and swing rod contact surface B is arranged in swing rod contact surface B, and connecting rod connects
Connect articulated joint, mass connection connecting rod；
Described shift fork A includes：Shift fork hole A, shifting fork bar A and shift fork hole B；Shift fork B includes：Shift fork hole C, shifting fork bar B and shift fork
Hole D；
Torsion spring, shift fork A and shift fork B are enclosed within support bar, and support bar is arranged on pedestal, torsion spring set jacket casing on torsion spring, swing rod
It is enclosed within torsion spring sleeve by hinge hole；
The position of the torsion spring arm A of torsion spring is corresponding with chute location A, and U-shaped opening direction and the chute A of torsion spring arm A openings
To identical；Distance is left with torsion spring arm AU shape open bottoms in the summit of chute A；
Position its torsion spring arm B corresponding with the position of chute B and U-shaped opening direction and the chute of torsion spring arm B of the torsion spring arm B of torsion spring
The opening direction of B is identical；Distance is left with the U-shaped opening bottom of torsion spring arm B in the summit of chute B；
The shifting fork bar A of shift fork A is stuck in torsion spring arm A, and the shifting fork bar B of shift fork B is stuck in torsion spring arm B, shift fork hole B connection sliding pin A,
Sliding pin A is put in the swing rod chute A of swing rod, and can be moved along swing rod chute A, when not using, sliding pin A and swing rod chute A ends
Portion contacts；Swing rod chute A and swing rod chute A ends are end points extending in the same direction along chute A；Shift fork A and shift fork B can divide when using
Do not slided along the chute A and chute A of torsion spring sleeve；
The shift fork hole D connection sliding pin B of shift fork B, sliding pin B is put in into the swing rod chute B of swing rod, when not using, sliding pin B and swing rod
Chute B ends contacts；Swing rod chute B is extended in the same direction as end points with swing rod chute B ends along chute B.
The articulated joint bottom of swing rod is provided with sensor, and sensor includes sensor sleeve, sensor back-moving spring and biography
Sensor slide bar；The low side of sensor slide bar puts in sensor sleeve and can be moved up and down along sensor sleeve inwall, senses
Sensor back-moving spring is set between the upper end of device slide bar and sensor sleeve；The sensor slide bar of sensor and the cam of swing rod
Curved surface is in contact.
The torsion spring inwall of described torsion spring, the shift fork hole C of the shift fork hole A of shift fork A and shift fork B are enclosed within the support bar of support bar
On outer wall, formed and rotate secondary.
The torsion spring arm A of described torsion spring is arranged on the shift fork contact surface A of shift fork A, and the torsion spring arm B of torsion spring is arranged on shift fork
On the shift fork contact surface C of B.
Shift fork A, shift fork B, torsion spring arm A and torsion spring arm B can circumferentially be slided along the support bar outer wall of support bar；Shift fork A
The torsion spring arm A for promoting torsion spring by shift fork contact surface A produces rotation, torsion spring torsional deformation is produced certain moment of torsion；Shift fork B passes through
Shift fork contact surface C promotes torsion spring arm B to produce rotation, torsion spring torsional deformation is produced certain moment of torsion.
Mounting groove A and mounting groove B is provided with torsion spring sleeve, is to ensure that shift fork A and shift fork B can conveniently be attached to turn round
In the chute A and chute B of spring sleeve.
Support bar includes support rod end surface, support lever attachment hole, support bar outer wall and support rod end surface；Pedestal includes：Bottom
Plate, base plate connecting hole, floor, connecting plate A, sleeve connection hole, supporting plate connecting hole and connecting plate B, connecting plate A and connecting plate B
It is arranged on base plate, support bar is arranged between connecting plate A and connecting plate B；Floor is two and supports connecting plate A and connection respectively
Plate B；Support bar is arranged in the sleeve lining of torsion spring sleeve, and the support lever attachment hole of support bar and the connecting hole of torsion spring sleeve are pacified
On the supporting plate connecting hole and sleeve connection hole on pedestal connecting plate B, fixation is bolted.
The shift fork hole D of the shift fork hole B and shift fork B of shift fork A is contacted with the swing rod chute A on swing rod and swing rod chute B respectively
Connection forms sliding pair, is realized by sliding pin, swing rod chute A and swing rod on the specially swing rod contact surface A of sliding pin and swing rod
Swing rod chute B contact connections on contact surface B, it is possible to slided along swing rod chute A and swing rod chute B, form sliding pair；It is sliding
Pin is threadably secured connection on the shift fork hole D of the shift fork hole B and shift fork B of shift fork A.
Described mass is square iron block.
Pedestal is arranged on impact experiment machine by base plate connecting hole when using.
Beneficial effects of the present invention：
A kind of new middle low frequency impact spectrum torsion spring type measurement pendulum of research, on the basis of reed instrument, allows the fixing end of cantilever beam to lead to
Cross hinge to be connected with basis, such cantilever beam is approximated as a rigid body, and measurement range is not limited by fixing end deflection.Punching
Spectrum torsion spring type measurement is hit to put compared with reed instrument：Be improved largely compared with reed instrument in measurement range, first natural frequency with
Second order intrinsic frequency difference is larger, is easy to filter off high-order inherent frequence response, so as to obtain accurate measured value；With bullet
Spring oscillator is compared：Shock response spectrum torsion spring type measurement pendulum, is torsional vibration system, intrinsic frequency and swing rod using torsion spring as flexible member
Rotary inertia to mass is related, reduces mass quality by changing oscillating bar length, so as to mitigate measurement apparatus integrally weigh
Amount.So the relative reed instrument of shock response spectrum torsion spring type measurement pendulum and spring oscillator have advantage in structure, its development and application are preceding
Scape is extensive.
Specific advantage is as follows：
（1）From a structural point, its shock response spectrum torsion spring type of the low-frequency vibrator structure of relatively conventional low frequency impact spectrometry measurement pendulum
Structure of rocking can be convenient for carrying with the quality of alleviator and volume；With respect to reed instrument apparatus, shock measurement is put in fixing end
Hinge arrangement can avoid the plastic deformation of swing rod structure, to improve the service life of measurement apparatus.
（2）Functionally, shock response spectrum torsion spring type measurement pendulum is used directly for low-frequency range impact spectrometry in measurement,
The measuring method of low-frequency range shock response spectrum in substitution reed instrument and low-frequency vibrator measurement in a closed series.
（3）For from metering system, be changed into for rotation measuring by the cam structure of shock response spectrum torsion spring type measurement pendulum swing rod
Straight-line displacement is measured, and compact conformation, certainty of measurement is high.
Brief description of the drawings：
Fig. 1 shock response spectrums torsion spring type measurement pendulum schematic diagram
Fig. 2 shock response spectrums torsion spring type measurement pendulum overall schematic
Fig. 3 pedestal overall schematics
Fig. 4 swing rod schematic diagrames
Fig. 5 sleeve overall schematics
Fig. 6 support bar schematic diagrames
Fig. 7 torsion spring overall schematics
Fig. 8 shift fork A overall schematics
Fig. 9 shift fork B overall schematics
Figure 10 sliding pin schematic diagrames
Figure 11 support bars, torsion spring and shift fork assembling schematic diagram
Figure 12 sleeve assembling schematic diagrams
Figure 13 sensor overall schematics
Wherein, pedestal（1）, torsion spring sleeve（2）, swing rod（3）, shift fork A（4）, mass（5）, torsion spring（6）, support bar（7）, dial
Fork（8）, sliding pin（9）And sensor（10）.
Specific embodiment：The present invention is described further below in conjunction with the accompanying drawings：
As shown in figs. 2 and 11, a kind of middle low frequency impact spectrum torsion spring type measurement pendulum, measurement pendulum include pedestal 1, torsion spring sleeve 2,
Swing rod 3, shift fork A4, mass 5, torsion spring 6, support bar 7, shift fork B8 and sliding pin 9；Sliding pin 9 has two, respectively sliding pin A9-1 and
Sliding pin B9-2；As shown in Figure 10, described sliding pin A9-1 includes：Sliding pin connection screw thread 9-3 and slide bar 9-4, sliding pin B9-2 structures
It is identical with sliding pin A9-1.
As shown in figure 1, torsion spring（6）Rigidityk, the mass of mass 5 ism, swing rod 3 can swing around coercive mechanism 11, pass through
ChangekWithmRatio so that change shock response spectrum torsion spring type measure oscillator system intrinsic frequency.
Torsion spring 6 includes：Torsion spring arm A6-1, torsion spring outer wall 6-2 and torsion spring arm B6-3, torsion spring inwall 6-4；Torsion spring arm A6-1 and
Torsion spring arm B6-3 is the opposite U-shaped fastener of two opening directions, and torsion spring arm A6-1 and torsion spring arm B6-3 are divided into the two of torsion spring 6
End；
As shown in figure 5, torsion spring sleeve 2 includes：Connecting hole 2-1, sleeve lining 2-2, barrel contacts face A2-3, mounting groove A2-4,
Chute A2-5, sleeve outer wall 2-6, locating surface A2-7, barrel contacts face B2-8, mounting groove B2-9, chute B2-10 and locating surface
B2-11；Barrel contacts face B2-8 is identical with barrel contacts face A2-3 structures, and mounting groove A2-4 and mounting groove B2-9 is from torsion spring sleeve
2 two ends extend axially inwardly along torsion spring sleeve 2；Chute A2-5 is connected with mounting groove A2-4 and chute A2-5 is along torsion spring sleeve
2 circumferencial direction extends, and chute A2-5 and mounting groove A2-4 forms T-shaped or L-shaped structure；Chute B2-10 and mounting groove B2-9
Connection and chute B2-10 extends along the circumferencial direction of torsion spring sleeve 2, the bearing of trend of chute B2-10 and the extension of chute A2-5
In the opposite direction, chute B2-10 and mounting groove B2-9 forms T-shaped or L-shaped structure；Mounting groove A2-4's corresponding with chute A2-5
Side wall is locating surface B2-11, and the side wall of mounting groove B2-9 corresponding with chute B2-10 is locating surface A2-7；
As shown in figure 4, being the both direction view of swing rod 3, swing rod 3 includes：Articulated joint, swing rod contact surface A3-1, hinge hole 3-
2nd, swing rod chute A3-3, connecting rod 3-4, swing rod contact surface B3-5, swing rod chute B3-6, swing rod chute A end 3-7, swing rod chute B
End 3-8, cam curved surface 3-9 and mass 5；Swing rod contact surface A3-1 and swing rod contact surface B3-5 are divided into the two of articulated joint
Side, swing rod chute A3-3 is arranged in swing rod contact surface A3-1, and swing rod contact surface B3-5 is arranged in swing rod contact surface B3-5, even
Bar 3-4 connects articulated joint, the connection connecting rod of mass 5 3-4；
As shown in Figure 8 and Figure 9, described shift fork A4 includes：Shift fork hole A4-1, shifting fork bar A4-6, shift fork end face 4-2, shift fork connect
Contacting surface A4-3 and shift fork hole B4-4, shift fork contact surface B4-5；Described shift fork B8 includes：Shift fork hole C8-1, shifting fork bar B8-6, dial
Fork face 8-2, shift fork contact surface C8-3 and shift fork hole D8-4, shift fork contact surface D8-5；
Torsion spring 6, shift fork A4 and shift fork B8 are enclosed within support bar 7, and support bar 7 is arranged on pedestal 1, and torsion spring sleeve 2 is enclosed within torsion spring 6
On, swing rod 3 is enclosed within torsion spring sleeve 2 by hinge hole 3-2；
The position of the torsion spring arm A6-1 of torsion spring 6 is corresponding with chute A2-5 positions, and torsion spring arm A6-1 U-shaped opening direction and chute
The opening direction of A2-5 is identical；The summit 2-12 of chute A2-5 leaves distance with torsion spring arm A6-1U shape open bottoms；This distance
It is to ensure that shifting fork bar A4-6 has enough displacement to reverse torsion spring 6, during without because of torsion spring 6 also without torsion completely just
Blocked by the summit 2-12 of chute A2-5.
So-called correspondence is exactly that chute A2-5 and torsion spring arm A6-1 is on the concentric circles with the axle of support bar 7 as the center of circle；
Position its torsion spring arm B6-3 corresponding with the position of chute B2-10 and the U-shaped of torsion spring arm B6-3 of the torsion spring arm B6-3 of torsion spring 6
Opening direction is identical with the opening direction of chute B2-10；The U-shaped opening bottom of the summit 2-12 and torsion spring arm B6-3 of chute B2-10
Leave distance in portion；This distance be in order to ensure that shifting fork bar B8-6 has enough displacement to reverse torsion spring 6, without because
Just blocked by the summit 2-12 of chute B2-10 when torsion spring 6 is also without torsion completely.
The shifting fork bar A4-6 of shift fork A4 is stuck in torsion spring arm A6-1, and the shifting fork bar B8-6 of shift fork B8 is stuck in torsion spring arm B6-3
Interior, shift fork hole B4-4 connects sliding pin A9-1, and sliding pin A9-1 is put in the swing rod chute A3-3 of swing rod 3, and can be along swing rod chute
A3-3 is moved, and when not using, sliding pin A9-1 is contacted with swing rod chute A end 3-7；Swing rod chute A3-3 and swing rod chute A ends
3-7 is end points extending in the same direction along chute A2-5；
The shift fork hole D8-4 of shift fork B8 connects sliding pin B9-2, and sliding pin B9-2 puts in into the swing rod chute B3-6 of swing rod 3, do not use
When, sliding pin B9-2 is contacted with swing rod chute B end 3-8；Swing rod chute B3-6 with swing rod chute B end 3-8 be end points along chute
B2-10 is extended in the same direction.
As shown in figure 13, the articulated joint bottom of swing rod 3 is provided with sensor 10, and sensor 10 includes sensor sleeve 10-
1st, sensor back-moving spring 10-2 and sensor slide bar 10-3, sensor sleeve 10-1 are fixed on base plate 1-1；Sensor slide bar
The low side of 10-3 puts in sensor sleeve 10-1 and can be moved up and down along sensor sleeve 10-1 inwalls, sensor slide bar
Sensor back-moving spring 10-2 is set between the upper end of 10-3 and sensor sleeve 10-1；The sensor slide bar 10-3 of sensor 10
Be in contact with the cam curved surface 3-9 of swing rod 3, sensor back-moving spring 10-2 ensure sensor slide bar 10-3 all the time with cam curved surface
3-9 is in contact condition, and the pivot angle of moment measuring oscillating bar changes.
According to the pendulum angle of swing rod, sensor slide bar 10-3 can follow cam curved surface 3-9 tracks to move up and down, so that root
According to slide bar adjustable height measuring oscillating bar pendulum angle.
The torsion spring inwall 6-4 of described torsion spring 6, the shift fork hole C8-1 of the shift fork hole A4-1 and shift fork B8 of shift fork A4 are enclosed within branch
On the support bar outer wall 7-3 of strut 7, formed and rotate secondary.
The torsion spring arm A6-1 of described torsion spring 6 is arranged on the shift fork contact surface A4-3 of shift fork A4, the torsion spring arm of torsion spring 6
B6-3 is arranged on the shift fork contact surface C8-3 of shift fork B8.
Shift fork A4, shift fork B8, torsion spring arm A6-1 and torsion spring arm B6-3 can be along support bar outer walls 7-3 weeks of support bar 7
To slip；Shift fork A4 promotes the torsion spring arm A6-1 of torsion spring 6 to produce rotation by shift fork contact surface A4-3, makes the torsional deformation of torsion spring 6
Produce certain moment of torsion；Shift fork B8 promotes torsion spring arm B6-3 to produce rotation by shift fork contact surface C8-3, produces the torsional deformation of torsion spring 6
The certain moment of torsion of life.
Mounting groove A2-4 and mounting groove B2-9 is provided with torsion spring sleeve 2, is to ensure shift fork A4 and shift fork B8 energy sides
Just it is attached in the chute A2-5 and chute B2-10 of torsion spring sleeve 2.
As shown in fig. 6, described support bar 7 includes：Support rod end surface 7-1, support lever attachment hole 7-2, support bar outer wall
7-3 and support rod end surface 7-4, is provided with support lever attachment hole A7-2 on support rod end surface 7-4；As shown in fig. 7, described torsion spring
6 include：Torsion spring arm A6-1, torsion spring outer wall 6-2, torsion spring arm B6-3 and torsion spring inwall 6-4.
As shown in figure 3, pedestal includes：Base plate 1-1, base plate connecting hole 1-2, floor 1-3, connecting plate A1-4, sleeve connection
Hole 1-5, supporting plate connecting hole 1-6 and connecting plate B1-7, connecting plate B1-7 structures are identical with connecting plate A1-4.Connecting plate A1-4 and
Connecting plate B1-7 is arranged on base plate 1-1, and support bar 7 is arranged between connecting plate A1-4 and connecting plate B1-7；Floor 1-3 is two
It is individual to support connecting plate A1-4 and connecting plate B1-7 respectively；Support bar 7 is arranged in the sleeve lining 2-2 of torsion spring sleeve 2, support bar
The 7 support lever attachment hole 7-2 and connecting hole 2-1 of torsion spring sleeve 2 is arranged on the supporting plate connecting hole on the connecting plate B1-7 of pedestal 1
On 1-6 and sleeve connection hole 1-5, fixation is bolted.
The shift fork hole D8-4 of the shift fork hole B4-4 and shift fork B8 of shift fork A4 respectively with swing rod 3 on swing rod chute A3-3 and pendulum
Bar chute B3-6 contact connections form sliding pair, are realized by sliding pin 9, specially the swing rod contact surface A3-1 of sliding pin 9 and swing rod 3
On swing rod chute A3-3 and swing rod contact surface B3-5 on swing rod chute B3-6 contact connection, it is possible to along swing rod chute
A3-3 and swing rod chute B3-6 is slided, and forms sliding pair；Sliding pin 9 is arranged on the shift fork of the shift fork hole B4-4 and shift fork B8 of shift fork A4
On the D8-4 of hole, connection is threadably secured.
Described mass 5 is square iron block.
Pedestal 1 is arranged on impact experiment machine by base plate connecting hole 1-2 when using.
Sliding pin 9 includes：Contact bar 9-3 and connecting rod 9-4；Contact bar 9-3 is twisted and shift fork A4 and shift fork B8 by screw thread fine jade
Connection.Connecting rod 9-4 is put in swing rod chute A3-3 and swing rod chute B3-6.
As shown in figure 11, the assembly relation between support bar 7, shift fork A4, torsion spring 6 and shift fork B8 is：In the torsion spring of torsion spring 6
Wall 6-4, the shift fork hole C8-1 of the shift fork hole A4-1 of shift fork A4 and shift fork B8 are enclosed within the support bar outer wall 7-3 of support bar 7；Torsion spring
6 torsion spring arm A6-1 is arranged on the shift fork contact surface A4-3 of shift fork A4, and the torsion spring arm B6-3 of torsion spring 6 is arranged on dialling for shift fork B8
On fork contact surface C8-3；Shift fork A4 and shift fork B8 can circumferentially be slided along the support bar outer wall 7-3 of support bar 7；Torsion spring 6 is
Twisting, shift fork A4 promotes the torsion spring arm A6-1 of torsion spring 6 to produce rotation by shift fork contact surface A4-3, produces the torsional deformation of torsion spring 6
The certain moment of torsion of life；Shift fork B8 promotes torsion spring arm B6-3 to produce rotation by shift fork contact surface C8-3, produces the torsional deformation of torsion spring 6
Certain moment of torsion.
As shown in figure 12, the chute A2-5 and cunning of torsion spring sleeve 2 can be conveniently attached in order to ensure shift fork A4 and shift fork B8
In groove B2-10, mounting groove A2-9 is provided with torsion spring sleeve 2；Shift fork A4 is limited by locating surface A2-7 and locating surface B2-11
With the movement of shift fork B8；Shift fork A4 and shift fork B8 can be slided along the chute A2-5 of torsion spring sleeve 2 and chute A2-10.
The actually used operation of shock response spectrum torsion spring type measurement pendulum, as shown in Fig. 2 shift fork A4, shift fork B8 and torsion spring 6 are installed
On the support bar outer wall 7-3 of support bar 7, by the sleeve outer wall 2-6 of the hinge hole 3-2 torsion springs sleeve 2 of swing rod 3, Ran Houzai
Support bar 7 is arranged in the sleeve lining 2-2 of torsion spring sleeve 2, the support lever attachment hole 7-2 of support bar 7 and torsion spring sleeve 2
Connecting hole 2-1 is arranged on the supporting plate connecting hole 1-6 and sleeve connection hole 1-5 on the connecting plate B1-7 of pedestal 1, is connected by bolt
Connect fixation；Swing rod chute A3-3 and swing rod on the shift fork hole D8-4 and swing rod 3 of the shift fork hole B4-4 and shift fork B8 of shift fork A4 are slided
Groove B3-6 contact connections, are fixed by sliding pin A9-1；Sliding pin A9-1 and sliding pin B9-2 are separately mounted to the shift fork hole B4- of shift fork A4
On the shift fork hole D8-4 of 4 and shift fork B8, connection is threadably secured；On the sliding pin A9-1 and swing rod contact surface A3-1 of swing rod 3
Swing rod chute A3-3 contact connections form sliding pair, the swing rod chute B3-6 contact connections on sliding pin B9-2 swing rod contact surfaces B3-5
Sliding pair is formed, sliding pin can be slided along swing rod chute A3-3 and swing rod chute B3-6；Shock response spectrum torsion spring type measurement pendulum is overall
It is arranged on impact experiment machine by the base plate connecting hole 1-2 on pedestal 1.
Shock response spectrum torsion spring type measurement pendulum specific works mode：Shock response spectrum torsion spring type measurement pendulum is main under impact loading
For four motion stages：It is secondary that torsion spring once reverses stage, Restoration stage of torsion spring, torsion spring secondary torsion stage and torsion spring
Restoration stage.
First stage, torsion spring once reverses the stage, and before pedestal 1, swing rod 3 is in horizontality to impact loading,
Under the effect of forward impact load, pedestal 1 is moved pedestal 1 upwards, and due to effect of inertia, swing rod 3 and mass 5 keep original shape
State, and the downward clockwise oscillation of relative torsion spring sleeve 2 of swing rod 3, the end B3-8 of the swing rod chute B3-6 on swing rod 3 are pushed down on
Sliding pin B9-2 and shift fork B8 are rotated clockwise, and shift fork A4 is limited and can not turned clockwise by the locating surface A2-7 on torsion spring sleeve 2
Dynamic, so the torsion spring arm B6-3 of torsion spring 6 is rotated clockwise under shift fork B8 promotions, torsion spring 6 twists deformation, now shift fork A4
On sliding pin A9-1 slided along the swing rod chute A3-3 of swing rod 3, the torsional deflection of torsion spring 6 stops with the clockwise oscillation of swing rod 3
Only terminate.
Second stage, Restoration stage of torsion spring, in the first phase, impact energy is converted into the elastic potential energy of torsion spring 6,
After the clockwise oscillation of swing rod 3 stops, torsion spring 6 is acted on due to self-recovery power, and the torsion spring arm B6-3 on torsion spring 6 starts multiple counterclockwise
Position rotates, and torsion spring arm B6-3 pushes shift fork B8, sliding pin B9-2 and swing rod 3 and rotates counterclockwise, until torsion spring arm B6-3 moves to original
Beginning position, torsion spring 6 reset terminate, now swing rod 3 is horizontal.
Phase III, in the torsion spring secondary torsion stage, in second stage, the elastic potential energy of torsion spring 6 is converted into swing rod 3 and matter
The kinetic energy of gauge block 5, so after torsion spring arm B6-3 resets, swing rod 3 and mass 5 continue to keep counterclockwise due to effect of inertia
Rotary state, the end A3-7 of the swing rod chute A3-3 on swing rod 3 promotes sliding pin A9-1 and shift fork A4 to rotate counterclockwise, so as to dial
The torsion spring arm A6-1 that shift fork contact surface 4-3 on fork A4 pushes torsion spring 6 is rotated counterclockwise, the torsion spring arm B6-3 and shift fork of torsion spring 6
B8 is limited by the locating surface B2-11 of torsion spring sleeve 2, it is impossible to counterclockwise movement, so torsion spring 6 produces torsional deflection, until pendulum
Bar 6 stops rotating counterclockwise, and torsion spring 6 stops deformation.
Fourth stage, the secondary Restoration stage of torsion spring, torsion spring 6 is acted on due to the restoring force of itself, and A6-1 is clockwise for torsion spring arm
Rotate and reset, torsion spring arm A6-1 pushes shift fork A4 and sliding pin A9-1 is rotated clockwise, sliding pin A9-1 promotes the swing rod chute of swing rod 3
A3-3 end faces, swing rod 3 is rotated clockwise, until torsion spring 6 recovers deformation, torsion spring arm A6-1 returns to home position, and swing rod 3 is in water
Level state.
After shock response spectrum torsion spring type measurement pendulum experiences this four-stage, at the swing rod 3 and mass 5 of torsion spring type measurement pendulum
Constantly converted between continuous swing state, the elastic potential energy of torsion spring 6 and the kinetic energy of swing rod 3 and mass 5, torsion spring type measurement pendulum
Motion state be constantly in this four-stage, constantly circulation, until shock response spectrum torsion spring type measurement pendulum overall power consumption be zero,
Stop motion.
The metering system of shock response spectrum torsion spring type measurement pendulum pivot angle, is measured, sensor sleeve 10- using linear displacement transducer
1 is fixed on base plate 1-1, and sensor slide bar 10-3 can be slided along sensor sleeve 10-1, sensor back-moving spring 10-2
Between sensor sleeve 10-1 and sensor slide bar 10-3, it is ensured that sensor slide bar 10-3 all the time with cam curved surface 3-9
In contact condition, and the pivot angle of the straight-line displacement change moment measuring oscillating bar for passing through sensor slide bar 10-3 changes.
Claims (10)
1. a kind of middle low frequency impact spectrum torsion spring type measurement is put, it is characterised in that：Measurement pendulum includes pedestal（1）, torsion spring sleeve
（2）, swing rod（3）, shift fork A（4）, mass（5）, torsion spring（6）, support bar（7）, shift fork B（8）And sliding pin（9）；Sliding pin（9）Have
Two, respectively sliding pin A（9-1）With sliding pin B（9-2）；
Torsion spring（6）Including：Torsion spring arm A（6-1）And torsion spring arm B（6-3）；Torsion spring arm A（6-1）With torsion spring arm B（6-3）It is two
The opposite U-shaped fastener of opening direction, torsion spring arm A（6-1）With torsion spring arm B（6-3）It is divided into torsion spring（6）Two ends；
Torsion spring sleeve（2）Including：Mounting groove A（2-4）, chute A（2-5）, locating surface A（2-7）, mounting groove B（2-9）, chute B
（2-10）With locating surface B（2-11）；Mounting groove A（2-4）With mounting groove B（2-9）From torsion spring sleeve（2）Two ends along torsion spring sleeve
（2）Extend axially inwardly；Chute A（2-5）With mounting groove A（2-4）Connection and chute A（2-5）Along torsion spring sleeve（2）Circumference
Direction extends, chute A（2-5）With mounting groove A（2-4）Form T-shaped or L-shaped structure；Chute B（2-10）With mounting groove B（2-9）
Connection and chute B（2-10）Along torsion spring sleeve（2）Circumferencial direction extend, chute B（2-10）Bearing of trend and chute A（2-
5）Bearing of trend conversely, chute B（2-10）With mounting groove B（2-9）Form T-shaped or L-shaped structure；With chute A（2-5）Correspondence
Mounting groove A（2-4）Side wall be locating surface B（2-11）, with chute B（2-10）Corresponding mounting groove B（2-9）Side wall be fixed
Plane A（2-7）；
Swing rod（3）Including：Articulated joint, swing rod contact surface A（3-1）, hinge hole（3-2）, swing rod chute A（3-3）, connecting rod（3-4）、
Swing rod contact surface B（3-5）, swing rod chute B（3-6）, swing rod chute A ends（3-7）, swing rod chute B ends（3-8）, cam it is bent
Face（3-9）And mass（5）；Swing rod contact surface A（3-1）With swing rod contact surface B（3-5）It is divided into the both sides of articulated joint, swing rod
Chute A（3-3）It is arranged on swing rod contact surface A（3-1）It is interior, swing rod contact surface B（3-5）It is arranged on swing rod contact surface B（3-5）It is interior,
Connecting rod（3-4）Connection articulated joint, mass（5）Connection connecting rod（3-4）；
Described shift fork A（4）Including：Shift fork hole A（4-1）, shifting fork bar A（4-6）With shift fork hole B（4-4）；Shift fork B（8）Including：
Shift fork hole C（8-1）, shifting fork bar B（8-6）With shift fork hole D（8-4）；
Torsion spring（6）, shift fork A（4）With shift fork B（8）It is enclosed within support bar（7）On, support bar（7）It is arranged on pedestal（1）On, torsion spring set
Cylinder（2）It is enclosed within torsion spring（6）On, swing rod（3）By hinge hole（3-2）It is enclosed within torsion spring sleeve（2）On；
Torsion spring（6）Torsion spring arm A（6-1）Position and chute A（2-5）Position correspondence, and torsion spring arm A（6-1）U-shaped opening side
To with chute A（2-5）Opening direction it is identical；Chute A（2-5）Summit（2-12）With torsion spring arm A（6-1）U-shaped opening bottom
Leave distance；
Torsion spring（6）Torsion spring arm B（6-3）Position and chute B（2-10）Position correspondence its torsion spring arm B（6-3）And torsion spring arm B
（6-3）U-shaped opening direction and chute B（2-10）Opening direction it is identical；Chute B（2-10）Summit（2-12）With torsion spring arm
B（6-3）U-shaped opening bottom leave distance；
Shift fork A（4）Shifting fork bar A（4-6）It is stuck in torsion spring arm A（6-1）It is interior, shift fork B（8）Shifting fork bar B（8-6）It is stuck in torsion spring arm
B（6-3）It is interior, shift fork hole B（4-4）Connection sliding pin A（9-1）, sliding pin A（9-1）Put in swing rod（3）Swing rod chute A（3-3）It is interior,
And can be along swing rod chute A（3-3）It is mobile, when not using, sliding pin A（9-1）With swing rod chute A ends（3-7）Contact；Swing rod is slided
Groove A（3-3）With swing rod chute A ends（3-7）It is end points along chute A（2-5）Extend in the same direction；Shift fork A（4）With shift fork B（8）Make
Used time can be respectively along torsion spring sleeve（2）Chute A（2-5）With chute A（2-10）Slide；
Shift fork B（8）Shift fork hole D（8-4）Connection sliding pin B（9-2）, sliding pin B（9-2）Put in into swing rod（3）Swing rod chute B
（3-6）It is interior, when not using, sliding pin B（9-2）With swing rod chute B ends（3-8）Contact；Swing rod chute B（3-6）With swing rod chute B
End（3-8）It is end points along chute B（2-10）Extend in the same direction.
2. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Swing rod（3）Articulated joint
Bottom is provided with sensor（10）, sensor（10）Including sensor sleeve（10-1）, sensor back-moving spring（10-2）And biography
Sensor slide bar（10-3）；Sensor slide bar（10-3）Low side put in sensor sleeve（10-1）It is interior and can be along sensor sleeve
（10-1）Inwall is moved up and down, sensor slide bar（10-3）Upper end and sensor sleeve（10-1）Between set sensor reset
Spring（10-2）；Sensor（10）Sensor slide bar（10-3）With swing rod（3）Cam curved surface（3-9）It is in contact.
3. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Described torsion spring（6）'s
Torsion spring inwall（6-4）, shift fork A（4）Shift fork hole A（4-1）With shift fork B（8）Shift fork hole C（8-1）It is enclosed within support bar（7）Branch
Strut outer wall（7-3）On, formed and rotate secondary.
4. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Described torsion spring（6）'s
Torsion spring arm A（6-1）Installed in shift fork A（4）Shift fork contact surface A（4-3）On, torsion spring（6）Torsion spring arm B（6-3）Installed in dial
Fork B（8）Shift fork contact surface C（8-3）On.
5. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Shift fork A（4）, shift fork B
（8）, torsion spring arm A（6-1）With torsion spring arm B（6-3）Can be along support bar（7）Support bar outer wall（7-3）It is circumferential to slide；Shift fork
A（4）By shift fork contact surface A（4-3）Promote torsion spring（6）Torsion spring arm A（6-1）Rotation is produced, makes torsion spring（6）Torsional deformation is produced
The certain moment of torsion of life；Shift fork B（8）By shift fork contact surface C（8-3）Promote torsion spring arm B（6-3）Rotation is produced, makes torsion spring（6）Reverse
Deformation produces certain moment of torsion.
6. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Torsion spring sleeve（2）On set
Mounting groove A is put（2-4）With mounting groove B（2-9）, it is to ensure shift fork A（4）With shift fork B（8）Torsion spring set can be conveniently attached to
Cylinder（2）Chute A（2-5）With chute B（2-10）It is interior.
7. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Support bar（7）Including branch
Strut end face（7-1）, support lever attachment hole（7-2）, support bar outer wall（7-3）With support rod end surface（7-4）；Pedestal includes：Bottom
Plate（1-1）, base plate connecting hole（1-2）, floor（1-3）, connecting plate A（1-4）, sleeve connection hole（1-5）, supporting plate connecting hole
（1-6）With connecting plate B（1-7）, connecting plate A（1-4）With connecting plate B（1-7）It is arranged on base plate（1-1）On, support bar（7）Install
In connecting plate A（1-4）With connecting plate B（1-7）Between；Floor（1-3）It is two support connecting plate A respectively（1-4）With connecting plate B
（1-7）；Support bar（7）Installed in torsion spring sleeve（2）Sleeve lining（2-2）In, support bar（7）Support lever attachment hole（7-
2）With torsion spring sleeve（2）Connecting hole（2-1）Installed in pedestal（1）Connecting plate B（1-7）On supporting plate connecting hole（1-6）With
Sleeve connection hole（1-5）On, it is bolted fixation.
8. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Shift fork A（4）Shift fork hole
B（4-4）With shift fork B（8）Shift fork hole D（8-4）Respectively with swing rod（3）On swing rod chute A（3-3）With swing rod chute B（3-6）
Contact connection forms sliding pair, by sliding pin（9）Realize, specially sliding pin（9）With swing rod（3）Swing rod contact surface A（3-1）On
Swing rod chute A（3-3）With swing rod contact surface B（3-5）On swing rod chute B（3-6）Contact connection, it is possible to slided along swing rod
Groove A（3-3）With swing rod chute B（3-6）Slide, form sliding pair；Sliding pin（9）Installed in shift fork A（4）Shift fork hole B（4-4）With
Shift fork B（8）Shift fork hole D（8-4）On, it is threadably secured connection.
9. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Described mass（5）
It is square iron block.
10. middle low frequency impact spectrum torsion spring type measurement according to claim 1 is put, it is characterised in that：Pedestal when using（1）It is logical
Cross base plate connecting hole（1-2）On impact experiment machine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845821A (en) * | 2017-10-31 | 2018-03-27 | 河南科技大学 | Mechanical detection device for electric quantity of alkaline zinc-manganese battery |
| CN114910206A (en) * | 2022-06-20 | 2022-08-16 | 西南交通大学 | In-situ monitoring and early warning device and method for debris flow impact force |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2266370B (en) * | 1992-04-16 | 1995-07-26 | British Gas Plc | Apparatus for use in testing the surroundings of a buried pipe |
| WO1999054701A1 (en) * | 1998-04-20 | 1999-10-28 | Hobbs Gregg K | Multi-level vibration test system having controllable vibration attributes |
| CN1667392A (en) * | 2005-04-11 | 2005-09-14 | 孔丹群 | Revolving body roller swinging device for polar moment of inertia tester |
| CN201277907Y (en) * | 2008-09-26 | 2009-07-22 | 上汽通用五菱汽车股份有限公司 | Real vehicle simulating tail gate air spring experiment apparatus |
| CN203350015U (en) * | 2013-01-05 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Externally hung suspension device used for external hung flutter of aerofoil test |
-
2017
- 2017-02-09 CN CN201710070482.1A patent/CN106768785B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2266370B (en) * | 1992-04-16 | 1995-07-26 | British Gas Plc | Apparatus for use in testing the surroundings of a buried pipe |
| WO1999054701A1 (en) * | 1998-04-20 | 1999-10-28 | Hobbs Gregg K | Multi-level vibration test system having controllable vibration attributes |
| CN1667392A (en) * | 2005-04-11 | 2005-09-14 | 孔丹群 | Revolving body roller swinging device for polar moment of inertia tester |
| CN201277907Y (en) * | 2008-09-26 | 2009-07-22 | 上汽通用五菱汽车股份有限公司 | Real vehicle simulating tail gate air spring experiment apparatus |
| CN203350015U (en) * | 2013-01-05 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Externally hung suspension device used for external hung flutter of aerofoil test |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845821A (en) * | 2017-10-31 | 2018-03-27 | 河南科技大学 | Mechanical detection device for electric quantity of alkaline zinc-manganese battery |
| CN114910206A (en) * | 2022-06-20 | 2022-08-16 | 西南交通大学 | In-situ monitoring and early warning device and method for debris flow impact force |
| CN114910206B (en) * | 2022-06-20 | 2023-01-10 | 西南交通大学 | In-situ monitoring and early warning device and method for debris flow impact force |
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| CN106768785B (en) | 2019-02-15 |
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Effective date of registration: 20200213 Address after: 110000, No. 111, Shen Xi Road, Shenyang economic and Technological Development Zone, Liaoning Co-patentee after: 92942 troops of the PLA Patentee after: Shenyang University of Technology Address before: Shen Liaoning Road 110870 in Liaoning province Shenyang City Economic and Technological Development Zone No. 111 Patentee before: Shenyang University of Technology |