CN1645698A - Method and mechanism for producing elliptic motion trace by air wire - Google Patents
Method and mechanism for producing elliptic motion trace by air wire Download PDFInfo
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- CN1645698A CN1645698A CN 200410084613 CN200410084613A CN1645698A CN 1645698 A CN1645698 A CN 1645698A CN 200410084613 CN200410084613 CN 200410084613 CN 200410084613 A CN200410084613 A CN 200410084613A CN 1645698 A CN1645698 A CN 1645698A
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Abstract
The method includes following steps: the power is outputted by an output shaft of motor; the crank link mechanism is driven to implement a motion of sleeve spindle of elliptic motion locus and the second crank link mechanism is driven through power transmission system to make same direction rotation for implementing another sleeve spindle motion of elliptic motion locus; through connecting the motion of two crank link mechanisms, the locus of elliptic motion is composed; when adjusting the relative angle of two crank link mechanisms, the elliptic motion locus can be inclined.
Description
Technical field
The invention belongs to the mechanical movement synthesis technical field.
Background technology
Built on stilts lead, when ground wire moves at circuit, because the influence of external environment, for example wind-force, accumulated snow and icing.Produce vibration owing to the wind-force effect makes overhead wire, when accumulated snow on covering overhead wire or icing came off, then overhead wire can cause and waves.Overhead wire to wave amplitude very big, the track ovalize of its cross section.Conductor can make its disconnected strand, whole wire fracture under serious waving, even the shaft tower of circuit is collapsed.In a word, wave and to cause serious harm to circuit.
For simulating lead when moving under the circuit erected state, lead can stand the ability that how many times waves and a kind of conductor galloping testing machine that designs.The core technology of waving testing machine is a vibration generator, the track ovalize of its cross section when vibration generator makes conductor galloping, oval major and minor axis may have difference with external environment, be that change and center line major axis also can produce deflection with external force is different, with the angle of coordinate y axle can be from 0 °～90 °.The variation of extraneous environment also makes the frequency change of waving of lead, generally between 1～4Hz.
It is a straight line that the testing machine that is used as conductor vibration so far and waves can only make the cross section track of lead at testing machine exciting place, and promptly lead can only move up and down.For obtaining this movement locus and required frequency, pulling force, its vibration generator in the following way: electromagnetism, hydraulic pressure or mechanical mode exciting.
Electromagnetic exciter: enough thrust is arranged, the controlled easy accent of frequency.General frequency easily makes lead be adjusted to starting of oscillation under the required frequency at 20～60Hz, is commonly used for the vibration generator that the aeolian vibration testing machine is used.
Hydraulic vibration exciter: enough thrust is arranged, and frequency and amplitude are controlled, are suitable for frequency exciting when on the low side, and processing and manufacturing is difficult, also is commonly used for the vibration generator of aeolian vibration testing machine.
Mechanical vibration exciter: simple in structure, enough thrust is arranged, frequency and amplitude are controlled, and general frequency of utilization is low, and as 1～10Hz, the movement locus that can be made into conductive wire cross-section is a straight line, and the plain type that moves up and down is waved the testing machine vibration generator.
No matter adopt any in the above-mentioned vibration generator, the requirement of the motion ovalize track of its cross section when it all can not satisfy conductor galloping.
Summary of the invention
The present invention will provide a kind of testing machine of waving that allows overhead wire produce the method for elliptical trajectory and make overhead wire cross section generation elliptical trajectory.
The technical scheme that allows overhead wire produce the method for elliptical trajectory and take is:
For the cross section that makes overhead wire is oval orbiting motion, its vibration generator push rod of waving testing machine just should be elliptical trajectory.Elliptical trajectory is synthesized into by the horizontal movement and the track that moves both vertically, and therefore waves testing machine and should have the mechanism that makes the vibration generator push rod make level and move both vertically.
A motor drive shaft outputting power drags the motion that toggle is finished an axle of elliptical trajectory: horizontal movement; And drag second toggle by power-transmission system and do equidirectional rotation, finish another motion of elliptical trajectory: move both vertically; Simultaneously, by connecting the element of two toggles, make level and two vertical movement locus synthesize the track of elliptic motion.
The technical scheme that testing machine takes of waving that allows overhead wire produce elliptical trajectory is:
With a power output shaft, respectively with a rotating shaft that has a crank connecting link and quadric chain advance the shaft gear engagement, the shaft gear engagement that goes out shaft gear and second crank connecting link of quadric chain, the circle wheel of second crank connecting link be placed in can left and right mobile base on, base is connected by connecting rod is active with first crank connecting link again.
Crank connecting link is by a fixedly slide block that can move is thereon arranged on the chute by rotatable round wheel center, have on the slide block one can active connection connecting rod fulcrum.
Quadric chain is to be equipped with rotatable and the cross bar of three gears of straight line engagement successively, its two ends be equipped with rotatable respectively and with the gear that is contained in the crossbar end gears engaged.
But another kind of quadric chain is the rhombus framework that is connected into the angle random variation by four bars, the odontoid belt that is closed is housed respectively in four jiaos of rotating shafts seals rotatable four gears of wrapping up in.
Implement to drag a cover crank linkage by a motor shaft behind the present invention, and remove to drive another set of toggle by the quadric chain transferring power and make equidirectional circular motion, again the movement locus of two toggles is combined by connecting rod, obtained the mechanical movement elliptical trajectory.
Description of drawings
Fig. 1 is the structural representation of the present invention behind the omission power-transmission system.
Fig. 2 is for invention medium power transmission system concerns schematic diagram.
Fig. 3 is used for a kind of power-transmission system of the present invention, a kind of quadric chain.
Fig. 4 is used for second kind of power-transmission system of the present invention, another kind of quadric chain.
Fig. 5 is used for the third power-transmission system of the present invention.
Embodiment
Now the invention will be further described in conjunction with the accompanying drawings.
Motor M output shaft 1, the shaft gear 3 that advances with rotating shaft 2 that has crank connecting link B and quadric chain C meshes respectively, the shaft gear 4 that goes out of quadric chain C meshes with the rotating shaft 5 of crank connecting link A, the circle wheel of crank connecting link A be placed in can left and right mobile base D on, the connecting rod B9 of base D and crank connecting link B is active to be connected in 6.
Crank connecting link A is by on the chute A7 by rotatable circle wheel a center a fixedly slide block A8 that can move being arranged thereon, the fulcrum A10 of an active connection connecting rod A9 being arranged on the slide block.
Crank connecting link B is by on the chute B7 by rotatable circle wheel b center a fixedly slide block B 8 that can move being arranged thereon, the fulcrum B10 of an active connecting rod B9 being arranged on the slide block.
Three kinds of power-transmission systems can be arranged:
First kind of power-transmission system is:
Quadric chain C is equipped with rotatable and the cross bar 17 of three gears 12,13,14 of straight line engagement successively, and two ends are connected with bar 16, bar 18 rotating shafts respectively, bar 16 be equipped with rotatable and with gear 12 meshed gears 11; Bar 18 be equipped with rotatable and with gear 14 meshed gears 15.
Second kind of power-transmission system is:
Quadric chain C is by four connecting rods 19,20,21, but 22 connects into the rhombus framework of angle random variation, in four jiaos of rotating shafts, swing pinion 23,24,25,26 transferring power that odontoid belt 27 envelopes that are closed are wrapped up in is housed respectively.
The shaft gear 3 that advances of quadric chain C is gears 11, or gear 23, and going out shaft gear 4 is gear 15 or gear 25.
The third power-transmission system is:
Rotating shaft 2 is connected with bevel gear 26 on it, and 26,27 engagements of two bevel gears, is connected in the spline 28 and bevel gear 29 engagements of bevel gear 27, is installed in two bevel gears, 29,30 engagements on the base D, and bevel gear 30 is connected with the rotating shaft 5 of crank connecting link A.
Regulate two slide blocks and can change elliptical shape and oval angle, concrete way is:
When the center of adjusting slider A8 and the distance of runner a center O 1, just can change the transverse a size of final formation; When the center of adjusting slider B8 and the distance of runner b center O 2, just can change the ellipse short shaft b size of final formation; Elliptical orbit can form the ellipse that major and minor axis has any ratio because of its long and short adjusting: when minor axis length was zero, ellipse had only long axis direction, promptly waves the machine push rod and moves up and down; When long axis length was zero, ellipse had only short-axis direction, promptly waves the machine push rod and does side-to-side movement; When long and short axle was isometric, oval track was rounded; Different long and short axis scale makes elliptical orbit be fat or thin branch.
The chute A7 of runner a, the center line of the chute B7 of center line and runner b is 90 ° of layouts, when regulating one of them position of center line, the angle that makes two center lines is between 0 °～90 ° the time, the formed elliptical orbit of mechanism then, its a will be not orthogonal with the center line of tested overhead wire, and form one 0 °～90 ° angle, promptly form an oblique elliptical path.
Claims (8)
1, a kind of method that allows overhead wire produce elliptical trajectory is characterized in that:
A motor shaft outputting power, drag toggle and finish axle X-axis of elliptical trajectory, and drag second toggle by power-transmission system and do equidirectional rotation, finish another Y-axis of elliptical trajectory, simultaneously by connecting the element of two toggles, synthesize the track of elliptic motion, when the relative angle of crank mechanism connecting rods is overlapped in change two, just can make synthetic angle of elliptical orbit major axis inclination.
Concrete steps are:
1) motor shaft outputting power;
2) drive toggle and make circular motion, the link end that is connected with slide block moves horizontally;
3) make the second cover crank push and pull system make equidirectional circular motion by power-transmission system, its link end that is connected on the slide block moves both vertically;
4) but the second cover crank push and pull system be placed on the base of move left and right;
5) connect together by the first cover crank linkage on the connecting rod connection base, synthesize elliptical trajectory when being used as circular motion;
6) adjust the relative angle that the second cover crank linkage and first overlaps the crank linkage, just make angle of formed elliptical orbit major axis inclination.
2, a kind of mechanism that allows overhead wire produce elliptical trajectory, it is characterized in that: have only a power output shaft (1), the shaft gear (3) that advances with rotating shaft that has crank connecting link (B) (2) and quadric chain (C) is connected respectively, and the shaft gear (4) that goes out of quadric chain (C) is connected with the shaft gear (5) of crank connecting link (A); The circle wheel of crank connecting link (A), but be placed on the base (D) of move left and right active being connected in of connecting rod (B9) (6) of base (D) and crank connecting link (B);
3, mechanism according to claim 2, it is characterized in that: described crank connecting link (A) is by on the chute (A7) by rotatable circle wheel (a) center a fixedly slide block (A8) that can move being arranged thereon, the fulcrum (A10) of an active connection connecting rod (A9) being arranged on the slide block.
4, mechanism according to claim 2, it is characterized in that: described crank connecting link (B) is by on the chute (B7) by rotatable circle wheel (b) center a fixedly slide block B 8 that can move being arranged thereon, the fulcrum (B10) of an active connection connecting rod (B9) being arranged on the slide block.
5, mechanism according to claim 2, it is characterized in that: described quadric chain (C) is to be equipped with rotatable and three gears (12) of straight line engagement successively, (13), (14) cross bar (17) two ends respectively with bar (16), bar (18) rotating shaft connects, bar (16) be equipped with rotatable and with gear (12) meshed gears (11), bar (18) be equipped with rotatable and with gear (14) meshed gears (15).
6, mechanism according to claim 2, it is characterized in that: described quadric chain (C) is by four bars (19), (20), (21), (22) but connect into the rhombus framework of angle random variation, the swing pinion of being wrapped up in by odontoid belt (27) envelope (23) is housed, (24) respectively in four jiaos of rotating shafts, (25), (26).
7, mechanism according to claim 2 is characterized in that: the shaft gear (3) that advances of described quadric chain (C) is gear (11), or gear (23); It is described that to go out shaft gear (4) be gear (15) or gear (25).
8, mechanism according to claim 2, it is characterized in that: described rotating shaft (2), it is connected with bevel gear (26) on it, and two bevel gears (26) (27) engagement, be connected in the spline (28) of bevel gear (27),, be installed in two bevel gears (29) on the base (D) with bevel gear (29) engagement, (30) engagement, bevel gear (30) is connected with the rotating shaft (5) of crank connecting link (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100846134A CN100395929C (en) | 2004-11-26 | 2004-11-26 | Method and mechanism for producing elliptic motion trace by air wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100846134A CN100395929C (en) | 2004-11-26 | 2004-11-26 | Method and mechanism for producing elliptic motion trace by air wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1645698A true CN1645698A (en) | 2005-07-27 |
| CN100395929C CN100395929C (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100846134A Expired - Fee Related CN100395929C (en) | 2004-11-26 | 2004-11-26 | Method and mechanism for producing elliptic motion trace by air wire |
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| CN (1) | CN100395929C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564717A (en) * | 2012-01-13 | 2012-07-11 | 华北电力大学（保定） | Overhead conductor galloping testing device and testing method on basis of gear-end displacement excitation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111143U (en) * | 1991-07-10 | 1992-07-29 | 龙天民 | Novel vibration exciter of elliptic-track efficient vibrating screen |
| US5804733A (en) * | 1995-03-31 | 1998-09-08 | Shinko Electric Co., Ltd. | Elliptical vibratory apparatus |
| CN2597099Y (en) * | 2003-01-09 | 2004-01-07 | 陈彦彬 | Multi-shaft connecting rod vibration exciter for vibration screen |
-
2004
- 2004-11-26 CN CNB2004100846134A patent/CN100395929C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564717A (en) * | 2012-01-13 | 2012-07-11 | 华北电力大学（保定） | Overhead conductor galloping testing device and testing method on basis of gear-end displacement excitation |
| CN102564717B (en) * | 2012-01-13 | 2015-08-26 | 华北电力大学（保定） | Based on aerial condutor galloping test device and the test method of the excitation of shelves end movement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100395929C (en) | 2008-06-18 |
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