CN203798522U - Mechanical motion decoupling force transmission device - Google Patents
Mechanical motion decoupling force transmission device Download PDFInfo
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- CN203798522U CN203798522U CN201420147999.8U CN201420147999U CN203798522U CN 203798522 U CN203798522 U CN 203798522U CN 201420147999 U CN201420147999 U CN 201420147999U CN 203798522 U CN203798522 U CN 203798522U
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- 230000033001 locomotion Effects 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 title abstract description 10
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 230000008878 coupling Effects 0.000 claims description 29
- 239000011324 bead Substances 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 16
- 239000000470 constituent Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 19
- 230000005284 excitation Effects 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 241000316770 Deschampsia cespitosa var. alpina Species 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model belongs to the vibration environment test field and relates to a mechanical motion decoupling force transmission device. The mechanical motion decoupling force transmission device includes a lower rotating spherical surface (1), a lower rotating spherical surface semicircle-shaped ball (2-1), a cylindrical ball socket (3), an upper rotating spherical surface semicircle-shaped ball (2-2) and an upper rotating spherical surface (6); a connecting shaft (5) passes through the above five portion structures and is connected with the five portion structures sequentially from down to up at the vertical direction so as to form the main body of the device; the connecting shaft (5) realizes force transmission of vibration excitation equipment at a vibration excitation direction through fastening, wherein the vibration excitation direction refers to the axial direction of the connecting shaft (5); and spherical surfaces where each component is in abutting connection with each other can realize motion decoupling at a non-excitation direction. The mechanical motion decoupling force transmission device has the advantages of light weight, simple structure, favorable frequency response and low cost, and can assist in solving problems existing in excitation transfer and decoupling in a multi-degree-of-freedom loading test. Through utilizing a plurality of the devices, the design of a medium-sized six-degree-of-freedom system can be realized, and the frequency of the system can be high, and application requirements can be well satisfied.
Description
Technical field
The utility model belongs to vibration environment test field, is specifically related to a kind of mechanical motion decoupling zero load transfer device.
Background technology
In the vibration environment test of current space flight staple product, all tend to use the mode that up-to-date multiple degrees of freedom loads simultaneously to carry out, i.e. multi-dimensional vibration or Multiexciter experimental technique.Compare with traditional uniaxial test mode, this test is truer, can effectively check the performance of product under the vibration environment of reality use, improves product reliability.Traditional uniaxial test mode is compared in this application a kind of serious difference-when keeping vibration test excitation to transmit, also need multifreedom motion to carry out decoupling zero, otherwise because movement interference mutually damages, destructive test equipment and test products.
In engineering, designed multiple device and solved this problem, conventional have mechanical Pivoting bearing, flexible mechanical bar, a hydraulic pressure ball-type hinge.What current needs solved is the medium-sized six degree of freedom pilot system research and development program element of a rectangle table top, and for this engineering project, the decoupling device of above existing form is also inapplicable.Such as the transmission frequency of bearing-type is lower, be usually used in low frequency multi-freedom-degree vibration pilot system; The carrying of flexible mechanical bar is limited, only for small-sized multiple degrees of freedom pilot system; Although hydraulic pressure ball-type hinge transmits, frequency is high, and decoupling zero is effective, and weight is larger, also needs to be equipped with oil sources, causes cost very high, limited by development cost, can not adopt.Therefore, according to the development demand of existing engineering project, a kind of novel decoupling zero load transfer device be must design, power transmission and mobile decoupling in test realized.
Summary of the invention
The purpose of this utility model, for existing engineering project application demand, provides a kind of medium-sized six degree of freedom testing system apparatus that is applied in, and solves power transmission and mobile decoupling problem in test.
The utility model is a kind of mechanical motion decoupling zero load transfer device, wherein, comprising: lower rotation spherical, the semicircle bead of lower rotation spherical, column type ball-and-socket, the semicircle bead of upper rotation spherical, upper rotation spherical;
Wherein, the lower rotation spherical end face of lower rotation spherical lower end is that a column type connects table top, on lower rotation spherical end face, be lower rotation spherical dome-type projection, described lower rotation spherical dome-type projection comprises the inner sphere of lower rotation spherical and the outside sphere of lower rotation spherical; Under the inner sphere of lower rotation spherical and parts, the sphere of the semicircle bead of rotation spherical connects slidably; The interior concave spherical surface of the downside of outside sphere and column type ball-and-socket connects slidably; Column type ball-and-socket is column type, in upper and lower two bottom surfaces, has dome-type groove; The upper rotation spherical end face of upper rotation spherical upper end is that a column type connects table top, under upper rotation spherical end face, be on rotation spherical dome-type projection, described upper rotation spherical dome-type projection comprises the inner sphere of rotation spherical and the outside sphere of upper rotation spherical; On the inner sphere of upper rotation spherical and parts, the sphere of the semicircle bead of rotation spherical connects slidably; The interior concave spherical surface of the upside of the outside sphere of upper rotation spherical and column type ball-and-socket connects slidably;
Coupling shaft runs through above-mentioned 5 part-structures, and successively from the bottom up in the vertical direction be fastenedly connected, constituent apparatus main body;
Lower rotation spherical dome-type projection top has lower rotation spherical inner circle taper hole, and for running through coupling shaft, and lower rotation spherical inner circle taper hole is wide at the top and narrow at the bottom, and minimum-value aperture is greater than coupling shaft external diameter;
Upper rotation spherical dome-type projection top has rotation spherical inner circle taper hole, and for running through coupling shaft, and upper rotation spherical inner circle taper hole is low wide and up narrow, and minimum-value aperture is greater than coupling shaft external diameter.
A kind of mechanical motion decoupling zero load transfer device as above, wherein, coupling shaft section is " T " font, is combined with slotted nut screw thread, realizes the fastening of vertical direction; Rectangular pin is " word " groove and the slotted nut through coupling shaft bottom from horizontal direction, and screw is fixed on coupling shaft at vertical direction by rectangular pin.
A kind of mechanical motion decoupling zero load transfer device as above, wherein, also comprises: lower rotation spherical dust cover, lower rotation spherical dustproof gasket, lower rotation spherical trip bolt; Upper rotation spherical dust cover, upper rotation spherical dustproof gasket, upper rotation spherical trip bolt; Lower rotation spherical dust cover and lower rotation spherical dustproof gasket are arranged on lower rotation spherical end face female parts by lower rotation spherical screw, seal; Upper rotation spherical dust cover and upper rotation spherical dustproof gasket are arranged on upper rotation spherical end face female parts by upper rotation spherical screw, seal.
The beneficial effects of the utility model:
That this mechanical type mobile decoupling load transfer device has is lightweight, features simple structure, frequency response is good, cost is low feature, has solved excitation transmission and a decoupling zero difficult problem in multiple degrees of freedom load test.By using many these devices of cover, can realize medium-sized six degree of freedom system, system frequency is higher, meets application demand completely.
Accompanying drawing explanation
Fig. 1 is the whole cut-open view of a kind of mechanical motion decoupling zero load transfer device described in the utility model.
In figure, rotation spherical under 1-, the semicircle bead of rotation spherical under 2-1-, the semicircle bead of the upper rotation spherical of 2-2,
3-column type ball-and-socket, 4-ball-and-socket protective sleeve, 5-coupling shaft, the upper rotation spherical of 6-,
Rotation spherical dust cover under 7-1-, rotation spherical dustproof gasket under 8-1-, rotation spherical trip bolt under 9-1,
The upper rotation spherical dust cover of 7-2-, the upper rotation spherical dustproof gasket of 8-2-, the upper rotation spherical trip bolt of 9-2,
12-trip bolt, 10-slotted nut, 11-rectangular pin, 13-bullet pad, 14-hassock sheet;
Fig. 2 is described lower rotation spherical cut-open view;
In figure, 101-excitation set connecting end surface, 102-indent sinking end face, 103-Internal Spherical Surface, 104-spherical outside surface, 105-inner circle taper hole, 106-excitation set is installed through hole, the dustproof threaded hole of installing of 107-;
Fig. 3 is described lower rotation spherical backplan;
Fig. 4 is described upper rotation spherical cut-open view;
In figure, 201-stage body connecting end surface, 202-indent sinking end face, 203-Internal Spherical Surface, 204-spherical outside surface, 205-inner circle taper hole, 206-stage body is installed through hole, the dustproof threaded hole of installing of 207-;
Fig. 5 is described upper rotation spherical top view.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
The utility model is a kind of mechanical motion decoupling zero load transfer device, as shown in Figure 1, comprising: lower rotation spherical 1, the semicircle bead 2-1 of lower rotation spherical, column type ball-and-socket 3, the semicircle bead 2-2 of upper rotation spherical, upper rotation spherical 6;
Wherein, as shown in Figure 2 to 3, the lower rotation spherical end face 101 of lower rotation spherical 1 lower end is that a column type connects table top, on table top, along circumference one circle, by 60 °, is uniformly distributed six through holes 106, by six through holes, is realized and being connected with excitational equipment; On lower rotation spherical end face 101, be lower rotation spherical dome-type projection, described lower rotation spherical dome-type projection comprises the inner sphere 103 of lower rotation spherical and the outside sphere 104 of lower rotation spherical; Under the inner sphere 103 of lower rotation spherical and parts, the sphere of the semicircle bead 2-1 of rotation spherical connects slidably; Outside sphere 104 connects slidably with the interior concave spherical surface of the downside of column type ball-and-socket 3; Column type ball-and-socket 3 is column type, in upper and lower two bottom surfaces, has dome-type groove; As shown in Fig. 4～Fig. 5, the upper rotation spherical end face 201 of upper rotation spherical 6 upper ends is that a column type connects table top, on table top, along circumference one circle, by 60 °, is uniformly distributed six through holes 206, by six through holes, is realized and being connected with excitational equipment; Rotation spherical dome-type projection on upper rotation spherical end face is for 201 times, described upper rotation spherical dome-type projection comprises the inner sphere 203 of rotation spherical and the outside sphere 204 of upper rotation spherical; On the inner sphere 203 of upper rotation spherical 6 and parts, the sphere of the semicircle bead 2-2 of rotation spherical connects slidably; The outside sphere 204 of upper rotation spherical connects slidably with the interior concave spherical surface of the upside of column type ball-and-socket 3;
Coupling shaft 5 runs through above-mentioned 6 part-structures, and successively from the bottom up in the vertical direction be fastenedly connected, constituent apparatus main body;
Lower rotation spherical dome-type projection top has lower rotation spherical inner circle taper hole 105, and for running through coupling shaft 5, and lower rotation spherical inner circle taper hole 105 is wide at the top and narrow at the bottom, and minimum-value aperture is greater than coupling shaft 5 external diameters; Be used for wearing spindle repeatedly, the space while simultaneously abdicating lower end rotation.
Upper rotation spherical dome-type projection top has rotation spherical inner circle taper hole 205, be used for running through coupling shaft 5, and upper rotation spherical inner circle taper hole 205 is low wide and up narrow, minimum-value aperture is greater than coupling shaft 5 external diameters, be used for wearing spindle repeatedly, the space while simultaneously abdicating lower end rotation.
Coupling shaft 5 sections are " T " font, are combined with slotted nut 10 screw threads, realize the fastening of vertical direction; Rectangular pin 11 is from horizontal direction through " word " groove and the slotted nut 10 of coupling shaft 5 bottoms, and screw 12 is fixed on coupling shaft 5 at vertical direction by rectangular pin 11, and anti-shotpin comes off because of vibratory impulse.
Coupling shaft 5 transmits by the fastening excitational equipment direction of excitation power that realizes, and direction of excitation refers to the axial of coupling shaft 5; And each sphere is realized the mobile decoupling of non-excitation orientation.
In the present embodiment, a kind of mechanical motion decoupling zero load transfer device also comprises: lower rotation spherical dust cover 7-1, rotation spherical dustproof gasket 8-1, lower rotation spherical trip bolt 9-1; Upper rotation spherical dust cover 7-2, upper rotation spherical dustproof gasket 8-2, upper rotation spherical trip bolt 9-2; Lower rotation spherical dust cover 7-1 and lower rotation spherical dustproof gasket 8-1 are arranged on lower rotation spherical end face 101 female parts by lower rotation spherical screw 9-1, seal; Upper rotation spherical dust cover 7-2 and upper rotation spherical dustproof gasket 8-2 are arranged on upper rotation spherical end face 201 female parts by upper rotation spherical screw 9-2, seal.
In addition, when semi-circular bead 2 is connected with coupling shaft 5, on above-below direction, be connected in series bullet pad 13 and thick plain cushion 14 between the two, strengthen being fastenedly connected of whole device;
Ball-and-socket protective sleeve 4 is protected in column type ball-and-socket 3 outsides;
Wherein, the semicircle bead 2-1 of lower rotation spherical; the semicircle bead 2-2 of upper rotation spherical and column type ball-and-socket 3 are polytetrafluoroethylmaterial material; its greasy property is better; and coupling shaft 5 materials are 30CrMnSiA; higher coupling stiffness is provided, and upper rotation spherical 1, lower rotation spherical 2 and ball-and-socket protective sleeve 4 materials are aluminium, reduce weight when rigidity is provided.In remaining parts, under parts, to be aluminium, lower rotation spherical dustproof gasket parts 8-1, upper rotation spherical dustproof gasket 8-2 material be that teflon, parts slotted nut 10, rectangular pin 11 villages' material are 30CrMnSiA for rotation spherical dust cover 7-1, upper rotation spherical dust cover 7-2, hassock sheet 14 materials.
Implementation result: can, by using 1 or a plurality of mechanical motion decoupling zero load transfer device, form multiple degrees of freedom actuating system.Because this apparatus structure is easy, production cost is very low, and convenient test production and maintenance, in addition, because installation weight is very light, has reduced thrust loss, has effectively guaranteed launching efficiency.By test, apply, this system has reached test index demand.Controlling test result shows, this device decoupling zero is respond well, and has good power transmission capacity, warranty test application.
Above embodiment of the present utility model is explained in detail, above-mentioned embodiment is only optimum embodiment of the present utility model, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.
Claims (3)
1. a mechanical motion decoupling zero load transfer device, is characterized in that, comprising: lower rotation spherical (1), the semicircle bead (2-1) of lower rotation spherical, column type ball-and-socket (3), the semicircle bead (2-2) of upper rotation spherical, upper rotation spherical (6);
Wherein, the lower rotation spherical end face (101) of lower rotation spherical (1) lower end is that a column type connects table top, upper at lower rotation spherical end face (101) is lower rotation spherical dome-type projection, and described lower rotation spherical dome-type projection comprises the inner sphere (103) of lower rotation spherical and the outside sphere (104) of lower rotation spherical; Under the inner sphere of lower rotation spherical (103) and parts, the sphere of the semicircle bead of rotation spherical (2-1) connects slidably; Outside sphere (104) connects slidably with the interior concave spherical surface of the downside of column type ball-and-socket (3); Column type ball-and-socket (3) is column type, in upper and lower two bottom surfaces, has dome-type groove; The upper rotation spherical end face (201) of upper rotation spherical (6) upper end is that a column type connects table top, lower at upper rotation spherical end face (201) is upper rotation spherical dome-type projection, and described upper rotation spherical dome-type projection comprises the inner sphere (203) of rotation spherical and the outside sphere (204) of upper rotation spherical; On the inner sphere of upper rotation spherical (6) (203) and parts, the sphere of the semicircle bead of rotation spherical (2-2) connects slidably; The outside sphere of upper rotation spherical (204) connects slidably with the interior concave spherical surface of the upside of column type ball-and-socket (3);
Coupling shaft (5) runs through above-mentioned 5 part-structures, and successively from the bottom up in the vertical direction be fastenedly connected, constituent apparatus main body;
Lower rotation spherical dome-type projection top has lower rotation spherical inner circle taper hole (105), and for running through coupling shaft (5), and lower rotation spherical inner circle taper hole (105) is wide at the top and narrow at the bottom, and minimum-value aperture is greater than coupling shaft (5) external diameter;
Upper rotation spherical dome-type projection top has rotation spherical inner circle taper hole (205), and for running through coupling shaft (5), and upper rotation spherical inner circle taper hole (205) is low wide and up narrow, and minimum-value aperture is greater than coupling shaft (5) external diameter.
2. a kind of mechanical motion decoupling zero load transfer device as claimed in claim 1, is characterized in that, coupling shaft (5) section is " T " font, is combined with slotted nut (10) screw thread, realizes the fastening of vertical direction; Rectangular pin (11) is " word " groove and the slotted nut (10) through coupling shaft (5) bottom from horizontal direction, and screw (12) is fixed on coupling shaft (5) at vertical direction by rectangular pin (11).
3. a kind of mechanical motion decoupling zero load transfer device as claimed in claim 2, is characterized in that, also comprises: lower rotation spherical dust cover (7-1), lower rotation spherical dustproof gasket (8-1), lower rotation spherical trip bolt (9-1); Upper rotation spherical dust cover (7-2), upper rotation spherical dustproof gasket (8-2), upper rotation spherical trip bolt (9-2); Lower rotation spherical dust cover (7-1) and lower rotation spherical dustproof gasket (8-1) are arranged on lower rotation spherical end face (101) female parts by lower rotation spherical screw (9-1), seal; Upper rotation spherical dust cover (7-2) and upper rotation spherical dustproof gasket (8-2) are arranged on upper rotation spherical end face (201) female parts by upper rotation spherical screw (9-2), seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147999.8U CN203798522U (en) | 2014-03-28 | 2014-03-28 | Mechanical motion decoupling force transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420147999.8U CN203798522U (en) | 2014-03-28 | 2014-03-28 | Mechanical motion decoupling force transmission device |
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| Publication Number | Publication Date |
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| CN203798522U true CN203798522U (en) | 2014-08-27 |
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| CN201420147999.8U Expired - Lifetime CN203798522U (en) | 2014-03-28 | 2014-03-28 | Mechanical motion decoupling force transmission device |
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| CN (1) | CN203798522U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840677A (en) * | 2016-05-20 | 2016-08-10 | 北京空间飞行器总体设计部 | Six-freedom-degree self-adaptive flexible universal joint |
| CN110806298A (en) * | 2019-10-22 | 2020-02-18 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
| CN113917793A (en) * | 2021-09-22 | 2022-01-11 | 哈尔滨工业大学 | Supporting mechanism and photoetching machine |
-
2014
- 2014-03-28 CN CN201420147999.8U patent/CN203798522U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840677A (en) * | 2016-05-20 | 2016-08-10 | 北京空间飞行器总体设计部 | Six-freedom-degree self-adaptive flexible universal joint |
| CN105840677B (en) * | 2016-05-20 | 2018-05-04 | 北京空间飞行器总体设计部 | A kind of six degree of freedom self-adapting flexible universal joint |
| CN110806298A (en) * | 2019-10-22 | 2020-02-18 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
| CN110806298B (en) * | 2019-10-22 | 2021-06-11 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
| CN113917793A (en) * | 2021-09-22 | 2022-01-11 | 哈尔滨工业大学 | Supporting mechanism and photoetching machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
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| CX01 | Expiry of patent term |