CN209067765U - Cord tightness regulating member, locking balancing device and Centrifugal vibration equipment - Google Patents
Cord tightness regulating member, locking balancing device and Centrifugal vibration equipment Download PDFInfo
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- CN209067765U CN209067765U CN201821854834.9U CN201821854834U CN209067765U CN 209067765 U CN209067765 U CN 209067765U CN 201821854834 U CN201821854834 U CN 201821854834U CN 209067765 U CN209067765 U CN 209067765U
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Abstract
The utility model discloses cord tightness regulating member, locking balancing device and Centrifugal vibration equipment, cord tightness regulating member includes spring, guide rod and mounting base, guide groove is offered inside the mounting base, the spring is arranged in the guide groove, and the tail portion of the spring abuts the cell wall of guide groove, one end of the guide rod is threaded through in the guide groove and abuts the head of the spring, and the other end of the guide rod is stretched out by the guide groove and abuts rope；Guide rod guide groove described in the active force lower edge of rope is slided to adjust the elastic of rope；The cord tightness regulating member can be applicable on locking balancing device and Centrifugal vibration equipment.It can carry out automatic adjusument to rope according to the elastic of rope, and of simple structure and strong practicability, effect is good.
Description
Technical field
The utility model relates to technical field of mechanical environmental test, and in particular to cord tightness regulating member, locking balance
Device and Centrifugal vibration equipment.
Background technique
Centrifugal vibration platform equipment is the complete machine or components of a kind of large product for being mainly used for the departments pair such as space flight, aviation
Reliability test dynamic environmental test equipment, it also be used as Structural Dynamics characteristic research and water conservancy, building,
The specific use of the departments such as earthquake.Centrifugal vibration platform equipment is mainly controlled by centrifuge test system, shaketalle test system, auxiliary
The composition such as system processed.
And the elastic movement component to work in centrifugal field, moving component are inevitably subject to centrifugal forces,
When edge moves reciprocatingly the elastic movement system radially of the axis of rotation in centrifugal field, in centrifugal field, rotational angular velocity is big
The size of small difference, centrifugal force suffered by moving component is also different.Due to the effect by moving component centrifugal force, spring will
It can be compressed by the centrifugal force, until reaching new equalization point.It can be seen that the elastic system device to work in centrifugal field,
Since the centrifugal force for being covered component by its movement is influenced, the center equilbrium position of moving component reciprocating motion is not only changed,
And reduce the reciprocating movement displacement of its normal work.
Chinese Patent Application No. 201710135910.4 discloses a kind of locking balancing device and Centrifugal vibration testing equipment.
Balance mechanism including elastic movement system and for balancing its centrifugal force, elastic movement system include two elastic movement mechanisms,
The radial line of the two relative centrifugal field is symmetrical arranged, and each elastic movement mechanism includes moving component and elastomeric element, balance mechanism
For bascule structure, both ends are connect with two moving components of two elastic movement mechanisms respectively；In two moving components, one
It is moved to the center position of asymptotic centrifugal field, another is moved to the center position gradually far from psychological field, every one end of balance mechanism
Centrifugal force suffered by suffered pulling force and moving component connected to it is equal in magnitude, contrary.And balance mechanism includes fixed pulley
Group and rope, fixed pulley group include one or more fixed pulleys, and rope bypasses fixed pulley, fixed pulley can under rope frictional force around
Its rotation center makees spinning motion, and the both ends of rope are connect with two moving components respectively, pulling force suffered by every one end of rope and
Centrifugal force suffered by moving component connected to it is equal in magnitude, contrary.
When the equipment, which is placed in, to work on centrifuge, since the movable part of two vibration machines is identical in quality, and away from
Centrifuge rotation center is equidistant, therefore the centrifugal force respectively generated is also equal, i.e. pulling force size suffered by rope ends
It is equal, it, can centrifugal force suffered by balancing activity component each other behind the direction that power is converted by pulley.Centrifugal balance fills at this time
Rope in setting is in tensioning state.As driving force Fsinwt equal in magnitude to two vibration machines respectively, contrary,
Under the action of exciting force, the movable part of two vibration machines does the antipodal reciprocating motion in direction, and rope is also
It should be in tensioning state constantly.
But it was discovered by researchers that moving component structure and the system composition due to two vibration machines are done in real work
It is completely the same less than truly, even if the driving force equal in magnitude, contrary to two vibration machines respectively
When Fsinwt, but the size of the power of actual transfer and phase difference are all variant with perfect condition, can not do theoretic complete one
It causes.When two such vibration machine movable part moves back and forth, the displacement amplitude of vibration there is difference.Such as Fig. 1-(a)
It is shown, it is the original state of balancing device；It is the movable part when two vibration machines by size as shown in Fig. 1-(b)
It is equal, when contrary driving force Fsinwt excitation, ideally motion conditions of movable part；It may in real process
It will appear motion conditions shown in Fig. 1-(c), at this point, since rope design length itself has been fixed, then rope or deformed
It elongates, after deviation accumulation or rope is pulled off or the impaired cracking of movable part；Or there is situation shown in Fig. 1-(d), this
When, rope will be presented relaxed state, and rope may be disengaged directly from pulley grooves, can not play balancing activity component from
The effect of mental and physical efforts.In conclusion after centrifuge rotation, after the rope in balance mechanism is pulled off sometimes or is pulled loose elongation
It is detached from the groove track of design, the movable part on vibration machine can be also damaged when serious, working efficiency is influenced, causes equipment
Damage.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of cord tightness regulating members, can be according to rope
Elastic to carry out automatic adjusument to rope, of simple structure and strong practicability, effect is good.
In order to solve the above-mentioned technical problem, the utility model provides a kind of cord tightness regulating member, including spring, leads
To bar and mounting base, guide groove is offered inside the mounting base, the spring is arranged in the guide groove, and the spring
Tail portion abut the cell wall of guide groove, one end of the guide rod is threaded through the head in the guide groove and abutting the spring
The other end in portion, the guide rod is stretched out by the guide groove and abuts rope；Active force lower edge of the guide rod in rope
The guide groove sliding is to adjust the elastic of rope.
Preferably, being surrounded with retention bead on the guide rod, the retention bead is located at the guide groove
Interior, the internal diameter of the notch of the guide groove is less than the outer diameter of the retention bead.
Preferably, one end that the guide rod abuts rope is provided with idler wheel, opened up on the periphery wall of the idler wheel
There is a circle limiting groove, the rope is arranged in the limiting groove.
Preferably, the idler wheel includes wheel body and mandrel, the end of the guide rod is arranged in the mandrel, described
On the guide bar by screw locking, the wheel body is arranged on the mandrel and can rotate around the mandrel mandrel.
Preferably, the wheel body is cylindrical, the wheel body is rotated around central shaft, and the limiting groove is around institute
State the lateral wall setting of wheel body.
Preferably, the mounting base includes end cap and the guide part for offering through-hole, the guide part and the end
The locking of lid screw, the end cap cover one end of the through-hole.
The utility model discloses a kind of locking balancing devices, including above-mentioned cord tightness regulating member, further includes:
Elastic movement system comprising the radial line direction of Liang Ge elastic movement mechanism, the two relative centrifugal field is symmetrically set
It sets, each elastic movement mechanism includes moving component and elastomeric element, and one end fixed setting of the elastomeric element is described
Moving component connect and moves back and forth with the other end of the elastomeric element；
Balance mechanism comprising rope, the first fixed pulley and the second fixed pulley, it is fixed sliding that the rope successively bypasses first
Wheel and the setting of the second fixed pulley, and the both ends of the rope are arranged in parallel and connect respectively with two moving components, the rope
Every one end suffered by centrifugal force suffered by pulling force and moving component connected to it is equal in magnitude, contrary, described two movements
In component, one moves to the center position of asymptotic centrifugal field, another is moved to the center position gradually far from psychological field；
Wherein, the cord tightness regulating member is located between Liang Ge elastic movement mechanism, and the end of the guide rod is supported
The rope between the first fixed pulley and the second fixed pulley is connect, the guide rod moves under the action of the power of rope to adjust
Rope it is elastic.
The invention also discloses a kind of Centrifugal vibration equipment, including above-mentioned locking balancing device.
Cord tightness regulating member the utility model has the advantages that being provided with guide rod and bullet in the utility model in the utility model
Spring, guide rod are slided to adjust the elastic of the rope along guide groove under the active force of rope, to adjust cord tightness, are led
Rope is abutted always to bar, can prevent rope from loosening, and cord tightness regulating member can carry out rope according to the elastic of rope
Automatic adjusument, of simple structure and strong practicability, effect are good.
Locking balancing device the utility model has the advantages that balanced component can be with balance exercise component in centrifugal field in the utility model
In suffered centrifugal force, performance stablizes, and rope will not loosen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of balancing device in the background technique of the utility model；
Fig. 2 is the cord tightness regulating member structural schematic diagram one of the utility model；
Fig. 3 is the cord tightness regulating member structural schematic diagram two of the utility model；
Fig. 4 is the structural schematic diagram of locking balancing device；
Fig. 5 is locking balancing device working state schematic representation；
Fig. 6 is the structural schematic diagram of Centrifugal vibration equipment.
Figure label explanation: 10, mounting base；101, guide part；102, end cap；103, notch；20, guide rod；21, bullet
Spring；22, retention bead；30, idler wheel；31, wheel body；311, limiting groove；32, mandrel；40, rope；50, elastic movement mechanism；
501, moving component；502, elastomeric element；60, the first fixed pulley；61, the second fixed pulley；70, vibration machine；71, test specimen is pacified
Fill platform；80, cord tightness regulating member.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Referring to shown in Fig. 2-Fig. 3, the utility model discloses a kind of cord tightness regulating member, the cord tightness is adjusted
Component includes spring 21, guide rod 20 and mounting base 10, and guide groove is offered inside mounting base 10, and spring 21 is arranged in guide groove
It is interior, and the tail portion of spring 21 abuts the cell wall of guide groove.One end of guide rod 20 is threaded through in guide groove and abuts spring 21
Head, the other end of guide rod 20 are stretched out by guide groove and abut rope 40.Under the action of the spring 21, guide rod 20 is restricted
It can be moved into guide groove after the pressure of rope, when rope 40 loosens, guide rod 20 can be moved out along guide groove.Guide rod 20
It slides under the active force of rope 40 along guide groove to adjust the elastic of rope 40.
Retention bead 22 is surrounded on guide rod 20, retention bead 22 is located in guide groove, the notch of guide groove
103 internal diameter is less than the outer diameter of retention bead 22.Since the internal diameter of the notch 103 of guide groove is less than the outer diameter of retention bead 22,
So retention bead 22 can play position-limiting action to the movement of guide rod 20 when guide rod 20 is slided along guide groove, so that guiding
Bar 20 will not be fallen from mounting base 10.
One end that guide rod 20 abuts rope 40 is provided with idler wheel 30, circle limit is offered on the periphery wall of idler wheel 30
Groove 311, rope 40 are arranged in limiting groove 311.The design of idler wheel 30 can reduce cord tightness regulating member and rope
40 friction.And limiting groove 311 is then that can limit to rope 40.
Idler wheel 30 includes wheel body 31 and mandrel 32, and the end of guide rod 20 is arranged in mandrel 32, and mandrel 32 is locked by screw
Gu wheel body 31 is set on mandrel 32 and can rotate around mandrel 32 on guide rod 20.Wheel body 31 is cylindrical, and wheel body 31 is around it
Central axis rotation, limiting groove 311 are arranged around the lateral wall of wheel body 31.Cylindrical wheel body 31 opens up convenient for wall on the outside
Limiting groove 311, to reduce the friction between rope 40 and guide rod 20.When rope 40 slides relative to guide rod 20,
Rope 40 in limiting groove 311 is set with the rotation of idler wheel 30, on the one hand reduces rope 40 in this way and wears, another aspect and energy
By the effect of spring 21, the elastic of automatic adjusument rope 40 is realized.
Mounting base 10 includes end cap 102 and the guide part 101 for offering through-hole, guide part 101 and 102 screwed lock of end cap
Gu one end of the covering through-hole of end cap 102.The design of end cap 102 is to facilitate installation spring 21 and guide rod 20.
Above-mentioned cord tightness regulating member may be used in locking balancing device and Centrifugal vibration equipment.
As shown in figure 4, the invention also discloses a kind of locking balancing device, including above-mentioned cord tightness adjustment portion
Part, in addition, the locking balancing device further includes elastic movement system and balance mechanism.
Elastic movement system comprising the radial line direction of Liang Ge elastic movement mechanism 50, the two relative centrifugal field is symmetrically set
It sets, each elastic movement mechanism 50 includes moving component 501 and elastomeric element 502, and one end of elastomeric element 502 is fixedly installed,
Moving component 501 connect and moves back and forth with the other end of elastomeric element 502.
Balance mechanism comprising the first fixed pulley 60 and the second fixed pulley 61, rope 40 successively bypass the first fixed pulley 60
It is arranged with the second fixed pulley 61, and the both ends of rope 40 are arranged in parallel and connect respectively with two moving components 501, rope 40
Centrifugal force suffered by pulling force suffered by every one end and moving component connected to it 501 is equal in magnitude, contrary, two moving components
In 501, one moves to the center position of asymptotic centrifugal field, another is moved to the center position gradually far from psychological field.
Wherein, cord tightness regulating member is located between Liang Ge elastic movement mechanism 50, the end abutment position of guide rod 20
Rope 40 between the first fixed pulley 60 and the second fixed pulley 61, effect of the guide rod 20 in the resultant force of rope 40 and spring 21
Under, it can be moved along guide groove, to adjust the elastic of rope 40, and then realize the elastic automatic adjusument of rope 40.
As shown in figure 5, being locking balancing device working state schematic representation.Wherein Fig. 5 (a) is the work of locking balancing device
Original state.At this point, compressed state is presented in the spring 21 in cord tightness regulating member.After centrifuge rotates, due to
Effect of the idler wheel 30 by 40 pulling force of section cord, causes guide rod 20 to move right, until idler wheel 30 reaches new stress and puts down
Weighing apparatus state.At this point, 21 compression amount of spring increases.As shown in Fig. 5 (b), to adjust loose status diagram of restricting.For when 40 both ends of rope
501 reciprocatory movement of moving component in, if the actual displacement amplitude of moving component 501 is greater than design displacement amplitude,
Cause rope 40 be elongated or 501 motion phase of moving component it is poor with it is practical different, rope 40 is likely to present at this time
Relaxed state, at this point, 30 force balance state of locking idler wheel is broken, the elastic force of spring 21 will push locking idler wheel 30 to the left
Movement, until idler wheel 30 reaches new force balance state, rope 40 will be in tensioning state again, at this point, spring 21 by
Pressure amount reduces with respect to original state.As shown in Fig. 5 (c), to adjust tight status diagram of restricting.When the moving component at 40 both ends of rope
In 501 reciprocatory movements, due to the influence of the phase difference of control signal, cause a certain moment, two moving components 501 are possible to
Same-phase movement, at this point, pulling force suffered by rope 40 will overlapping portion exciting force, at this point, the exciting being superimposed on rope 40
Power pulls on idler wheel 30 and moves right, until idler wheel 30 reaches new force balance state, rope 40 is again in tensioning at this time
State.At this point, the compression amount of spring 21 increases with respect to original state.
As shown in fig. 6, the utility model discloses a kind of structural schematic diagram of Centrifugal vibration equipment, including above-mentioned locking
Balancing device.When not increasing locking balancing device, vibration machine 70 is above-mentioned elasticity fortune in the Centrifugal vibration equipment
Dynamic system.Vibration machine 70 is connect with test specimen erecting bed 71, and test specimen erecting bed 71 is a part of moving component 501,
It under the action of vibration machine 70, moves reciprocatingly, that is, vibrates.Under the action of vibration machine 70, test specimen erecting bed 71
It moves reciprocatingly.When the vibratory equipment is placed in centrifugal field, since test specimen erecting bed 71 is by the effect of centrifugal force, vibration machine
Elastomeric element 502 in 70 can stretch, and the vibrational state of test specimen erecting bed 71 is caused to shift, and working condition is unstable
It is fixed.After increasing locking balancing device, by locking balancing device, two test specimen erecting beds 71 due to direction of motion phase
Instead, suffered centrifugal force is balanced and is balanced out through rope 40.And cord tightness regulating member 80 then can to rope 40 it is elastic into
Row automatic adjusument to guarantee the normal work of locking balance mechanism, and then guarantees the normal work of the Centrifugal vibration equipment.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (8)
1. a kind of cord tightness regulating member, which is characterized in that including spring, guide rod and mounting base, inside the mounting base
Guide groove is offered, the spring is arranged in the guide groove, and the tail portion of the spring abuts the cell wall of guide groove, described
One end of guide rod is threaded through in the guide groove and abuts the head of the spring, and the other end of the guide rod is led by described
It is stretched out to slot and abuts rope；Guide rod guide groove described in the active force lower edge of rope is slided to adjust the pine of rope
Tightly.
2. cord tightness regulating member as described in claim 1, which is characterized in that be surrounded with limit on the guide rod
Protrusion, the retention bead are located in the guide groove, and the internal diameter of the notch of the guide groove is less than the outer of the retention bead
Diameter.
3. cord tightness regulating member as described in claim 1, which is characterized in that one end that the guide rod abuts rope is set
It is equipped with idler wheel, a circle limiting groove is offered on the periphery wall of the idler wheel, the rope is arranged in the limiting groove.
4. cord tightness regulating member as claimed in claim 3, which is characterized in that the idler wheel includes wheel body and mandrel, institute
The end that the guide rod is arranged in mandrel is stated, on the guide bar by screw locking, the wheel body is set in institute to the mandrel
It states on mandrel and can be rotated around the mandrel.
5. cord tightness regulating member as claimed in claim 4, which is characterized in that the wheel body is cylindrical, the wheel body
It is rotated around central shaft, the limiting groove is arranged around the lateral wall of the wheel body.
6. cord tightness regulating member as described in claim 1, which is characterized in that the mounting base includes end cap and offers
The guide part of through-hole, the guide part and the end cap screw lock, and the end cap covers one end of the through-hole.
7. a kind of locking balancing device, which is characterized in that including cord tightness adjustment portion described in any one of claims 1-6
Part, further includes:
Elastic movement system comprising the radial line direction of Liang Ge elastic movement mechanism, the two relative centrifugal field is symmetrical arranged, often
A elastic movement mechanism includes moving component and elastomeric element, one end fixed setting of the elastomeric element, the movement
Component connect and moves back and forth with the other end of the elastomeric element；
Balance mechanism comprising rope, the first fixed pulley and the second fixed pulley, the rope successively bypass the first fixed pulley and
The setting of second fixed pulley, and the both ends of the rope are arranged in parallel and connect respectively with two moving components, the rope it is every
Centrifugal force suffered by pulling force suffered by one end and moving component connected to it is equal in magnitude, contrary, described two moving components
In, one moves to the center position of asymptotic centrifugal field, another is moved to the center position gradually far from psychological field；
Wherein, the cord tightness regulating member is located between Liang Ge elastic movement mechanism, the end abutment position of the guide rod
Rope between the first fixed pulley and the second fixed pulley, the guide rod move under the action of the power of rope to adjust rope
It is elastic.
8. a kind of Centrifugal vibration equipment, which is characterized in that including locking balancing device as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854834.9U CN209067765U (en) | 2018-11-12 | 2018-11-12 | Cord tightness regulating member, locking balancing device and Centrifugal vibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821854834.9U CN209067765U (en) | 2018-11-12 | 2018-11-12 | Cord tightness regulating member, locking balancing device and Centrifugal vibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067765U true CN209067765U (en) | 2019-07-05 |
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ID=67098598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821854834.9U Active CN209067765U (en) | 2018-11-12 | 2018-11-12 | Cord tightness regulating member, locking balancing device and Centrifugal vibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209067765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163055A (en) * | 2018-11-12 | 2019-01-08 | 苏州东菱振动试验仪器有限公司 | A kind of cord tightness regulating member and its application |
| CN114264443A (en) * | 2021-12-24 | 2022-04-01 | 重庆编福科技有限公司 | Vibration test stand with double table-boards |
-
2018
- 2018-11-12 CN CN201821854834.9U patent/CN209067765U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163055A (en) * | 2018-11-12 | 2019-01-08 | 苏州东菱振动试验仪器有限公司 | A kind of cord tightness regulating member and its application |
| CN109163055B (en) * | 2018-11-12 | 2024-01-19 | 苏州东菱振动试验仪器有限公司 | Rope tightness adjusting component and application thereof |
| CN114264443A (en) * | 2021-12-24 | 2022-04-01 | 重庆编福科技有限公司 | Vibration test stand with double table-boards |
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