CN103293834B - Transmission limit device for soft cable traction video camera - Google Patents
Transmission limit device for soft cable traction video camera Download PDFInfo
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- CN103293834B CN103293834B CN201310192184.1A CN201310192184A CN103293834B CN 103293834 B CN103293834 B CN 103293834B CN 201310192184 A CN201310192184 A CN 201310192184A CN 103293834 B CN103293834 B CN 103293834B
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- pulley
- flexible cable
- support
- video camera
- frustum
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Abstract
A kind of transmission limit device for soft cable traction video camera, by support king-post, pulley support frame, driver, pulley blocks, flexible cable and video camera composition.Supporting king-post is four, is vertically fixed on ground, forms the rectangular parallelepiped space for video camera movement.A pulley support frame is fixed, for fixed block group at every root support tower capital end; Pulley blocks is made up of base, pulley, pulley spindle and pulley support, and pulley is placed in pulley spindle, and pulley spindle two ends are fixed on pulley support two journal stirrups, and pulley rotates around pulley spindle; Base arranges a frustum, and frustum central authorities are installation shaft, and installation shaft has threading hole, between frustum and pulley support, puts ball, pulley support rotates around installation shaft, and these two rotation directions are mutually vertical.Flexible cable is wound around on a drive, by pulley support frame and the pulley blocks of each self-support tower capital end, is jointly connected on video camera; Driver is fixed on and supports king-post bottom, and is connected with computing machine, controls the receipts of flexible cable and puts.
Description
Technical field
The present invention relates to mechanical positioning control technical field, relate to further and use soft cable traction video camera accurate-positioning control device, specially refer to a kind of transmission limit device for soft cable traction video camera.
Background technology
Current industry member has the robot of multiple implementation space moving target positioning control, and its drive unit realizing object of which movement is the rigid device such as hydraulic cylinder, cylinder, electric cylinder and rotary joint, and some structure uses pulley.Existing pulley is generally placed on bearing forms by pulley spindle being installed pulley, and pulley spindle is fixed relative to bearing, and the direction that rope rotates is perpendicular to pulley spindle, and rope turns to, commutating is restricted, cannot on a large scale in realize the control of moving target.
Patent " for supporting and transmit the device of Cable system; as video camera (SUSPENSION SYSTEM FOR SUPPORTING AND CONVEYING EQUIPMENT; SUCH AS A CAMERA) " (application number 760390 that Garrett W.Brown applies for, applying date 1985.07.30, the patent No. 4710819) disclose the structure design system that a kind of four ropes draw video cameras.Integrally-built signal, and the mechanically stable structure of end-of-pipe control target is as emphasis, meets the control overflow of four rope traction video cameras to a certain extent.But the weak point that this patent still exists is: the drive location for drawing flexible cable does not provide, support tower capital end does not describe for the pulley structure changing flexible cable direction.
The patent " universal pulley carriage " (application number 00248158.8, applying date 2000-08-18) that Li Yongquan, Yao Zhen China applies for discloses the pulley base that a kind of applicable rope turns to, commutates.The turning to of pulley base, commutation function are introduced, the turning to of rope, commutation function can be met.But the weak point that this patent still exists is: structure is still comparatively complicated, and pulley base rotation place does not arrange the device reducing friction, and friction force is comparatively large, and pulley base easily damages.
Summary of the invention
Technical purpose of the present invention overcomes above-mentioned problems of the prior art, develops a kind of transmission limit device for soft cable traction video camera; Make integral installation structure simple, the motion control of realize target on a large scale.
The present invention for realize above-mentioned technical purpose adopt technical solution be: the transmission limit device for soft cable traction video camera provided, by support king-post, pulley support frame, driver, pulley blocks, flexible cable and video camera composition.Described support king-post is four, is vertically fixed on ground, forms a rectangular parallelepiped space scope for video camera movement.Pulley support frame, driver and pulley blocks are respectively four, and a pulley support frame is fixed, for fixed block group in the top supporting king-post at every root; Described pulley blocks is made up of base, pulley, pulley spindle and pulley support, and pulley is placed in pulley spindle central authorities, and the two ends of pulley spindle are fixed on two journal stirrups of pulley support, and pulley is rotated around pulley spindle; Base has a frustum, and frustum central authorities are installation shaft, installation shaft are established a threading hole, for wearing flexible cable; Between frustum and pulley support, be provided with ball, pulley support rotates on frustum around installation shaft, and these two rotation directions are mutually vertical.Described flexible cable is wound around on a drive, respectively by pulley support frame and the pulley blocks of each self-support tower capital end, is jointly connected on video camera; Described driver is fixed on and supports king-post bottom, and driver is connected with computing machine, and computing machine controls four drivers to control the receipts of flexible cable and to put simultaneously.
Pulley of the present invention is circumferentially with a groove, and in installation shaft, the position of threading hole and the location matches of pulley groove, ensure that flexible cable is close to groove, drives pulley rotation by the movement of flexible cable; Depth of groove on pulley is 4-6 times of flexible cable diameter, to ensure that flexible cable is close to pulley groove; The recess width of pulley is 1.5-2 times of flexible cable diameter, to reduce the friction force between pulley groove and flexible cable, and flexible cable can be moved in a groove, pulley produces axial force, drives pulley support to rotate on frustum.
The present invention compared with prior art tool has the following advantages:
1, draw video camera by flexible cable, cost is low; Flexible cable can adopt the flexible member such as cable wire, rope structure, and it is very convenient to change and keep in repair; The flexible cable position control device of this low cost, is easy to the position control realizing moving target on a large scale, the range of application of expansion space moving target positioning control.
2, the pulley blocks that the present invention adopts has universal function, solves that common pulley turns to, commutate restricted problem, and structure is simple, easy for installation.When target in a big way, comparatively large span motion time, flexible cable is inevitable to be swung on a large scale, and the Way out of flexible cable can change at any time.Adopt pulley blocks, optionally can change the direction of flexible cable, flexible cable exit is destroyed from the effect of side force, due to pulley support frame, installation shaft having threading hole, pulley circumference is fluted, in installation shaft, the position of threading hole and the location matches of pulley groove, solve the problem that flexible cable comes off from pulley.By the appropriate design of pulley blocks, achieve the variation of flexible cable direction in tolerance band.
3, driver is fixed on the bottom supporting king-post, for controlling flexible cable, makes one-piece construction simple, being beneficial to I& M; Support tower capital end is provided with pulley support frame, is convenient to the installation of pulley blocks.
4, pulley support frame and installation shaft are provided with threading hole, can ensure that flexible cable is smooth and easy and pass through pulley groove.
5, by experiment, proving that in the length of side be 5*3 rice, is highly, in the rectangular parallelepiped space range of movement of 3 meters, can realize the positioning precision that video camera is good.
Accompanying drawing explanation
Fig. 1 is transmission limit device for soft cable traction video camera of the present invention location schematic diagram;
Fig. 2 is pulley block structure schematic diagram of the present invention;
Fig. 3 is the cut-open view of pulley blocks left view.
Embodiment
See Fig. 1, transmission limit device for soft cable traction video camera of the present invention is by supporting king-post 1, and pulley support frame 2, driver 6, pulley blocks 3, flexible cable 4 and video camera 5 form.Described support king-post 1 is four, is vertically fixed on ground, forms a rectangular parallelepiped space scope for video camera 5 movement.Pulley support frame 2, driver 6 and pulley blocks 3 are respectively four, and a pulley support frame 2 is fixed, for fixed block group 3 in the top supporting king-post 1 at every root; Described flexible cable 4 is wrapped on driver 6, respectively by pulley support frame 2 and the pulley blocks 3 on each self-support tower post 1 top, is jointly connected on video camera 5.Described driver 6 is fixed on and supports king-post 1 bottom, and driver 6 is connected with computing machine, controls four drivers 6 simultaneously control the receipts of flexible cable 4 and put by computing machine.With the motion of computer project video camera 5, calculate the length variations of four flexible cables 4 in motion process, and then the running of control and drive system 6, four flexible cables 4 are elongated or shortened in an orderly manner, ensure that flexible cable 4 is in tensioning state always, prevent flexible cable 4 from landing pulley blocks 3.When video camera 5 moves in the rectangular parallelepiped space that four support king-posts 1 surround, the length of four flexible cables 4 and direction all can change, thus reach the object controlling camera position.Such as: when make video camera 5 to left movement, first by computer project motion path, then the length variations of four flexible cables 4 in motion process is calculated, can calculate two, left side flexible cable 4 should shorten, two, the right flexible cable 4 should be extended, and then the running of control and drive system 6, make two, the left side support two flexible cables 4 on king-post 1 to shrink, two, the right supports two flexible cables 4 on king-post 1 and extends, and under the coordinated movement of various economic factors of four flexible cables 4, makes video camera 5 reposefully to left movement.
See Fig. 2, pulley blocks 3 of the present invention is made up of with pulley support 9 base 7, pulley 11, pulley spindle 10.Pulley 11 is placed in pulley spindle 10 central authorities, and the two ends of pulley spindle 10 are fixed on two journal stirrups of pulley support 9, and pulley 11 can be rotated around pulley spindle 10; Have a frustum at base 7, frustum central authorities are installation shaft 12, installation shaft 12 are established a threading hole, for wearing flexible cable 4; Between frustum and pulley support 9, be provided with ball 8, pulley support 9 rotates on frustum around installation shaft 12, and these two rotation directions are mutually vertical, make pulley blocks 3 have gimbal function, meets flexible cable 4 and draws flexible cable direction change in video camera 5 motion process.Pulley 11 is circumferentially with a groove, the position of the threading hole of installation shaft 12 and the location matches of pulley groove, ensures that flexible cable 4 is close to groove, is with travelling block 11 to rotate around pulley spindle 10 by the movement of flexible cable 4.Depth of groove on pulley 11 is 4-6 times of flexible cable 4 diameter, to ensure that flexible cable 4 is close to pulley groove; The recess width of pulley 11 is 1.5-2 times of flexible cable 4 diameter, to reduce the friction force between pulley groove and flexible cable 4, and flexible cable 4 can be moved in a groove, pulley 11 produces axial force, drives pulley support 9 to rotate around installation shaft 12 on frustum.Pulley support frame 2 and base 7 are respectively provided with four threaded holes, with facilitate to pulley blocks 3 carry out installation fix.
See Fig. 3, frustum and pulley support 9 are equipped with groove in correspondence with each other, and ball 8 is loaded in the groove of frustum.When flexible cable 4 moves in the groove of pulley 11; axial force is produced to pulley 11, when driving pulley support 9 to rotate around installation shaft 12 on frustum, for reducing the friction that pulley support 9 rotates on frustum; effectively protect pulley blocks 3, make it not easily destroy because of wearing and tearing.
Claims (2)
1. transmission limit device for soft cable traction video camera, by support king-post (1), pulley support frame (2), driver (6), pulley blocks (3), flexible cable (4) and video camera (5) composition, described support king-post (1) is four, vertically be fixed on ground, form a rectangular parallelepiped space scope for video camera (5) movement, pulley support frame (2), driver (6) and pulley blocks (3) are respectively four, a pulley support frame (2) is fixed on the top supporting king-post (1) at every root, for fixed block group (3), described flexible cable (4) is wrapped on driver (6), and the pulley support frame (2) respectively by each self-support tower post (1) top is connected with video camera (5) with pulley blocks (3), described driver (6) is fixed on and supports king-post (1) bottom, and driver (6) is connected with computing machine, and computing machine controls four drivers (6) simultaneously and controls the receipts of flexible cable (4) and put, it is characterized in that: described fixed block group (3) is made up of with pulley support (9) base (7), pulley (11), pulley spindle (10), pulley (11) is placed in pulley spindle (10) central authorities, the two ends of pulley spindle (10) are fixed on two journal stirrups of pulley support (9), and pulley (11) can be rotated around pulley spindle (10), base (7) has a frustum, and frustum central authorities are the installation shaft (12) of a projection, and installation shaft (12) is provided with a threading hole, for wearing flexible cable (4), between frustum and pulley support (9), be provided with ball (8), pulley support (9) rotates on frustum around installation shaft (12), and these two rotation directions are mutually vertical, described pulley (11) is circumferentially with a groove, the upper position of threading hole of installation shaft (12) and the location matches of pulley groove, ensure that flexible cable (4) is close to groove, rotated by the moving belt travelling block (11) of flexible cable (4), depth of groove on pulley (11) is 4-6 times of flexible cable (4) diameter, in order to ensure that flexible cable (4) is close to groove, recess width on pulley (11) is 1.5-2 times of flexible cable (4) diameter, in order to reduce the friction force between pulley groove and flexible cable (4), and flexible cable (4) can be moved in a groove, pulley (11) produces axial force, drives pulley support (9) to rotate on frustum.
2. transmission limit device for soft cable traction video camera according to claim 1, it is characterized in that: on frustum and pulley support (9), be equipped with groove in correspondence with each other, ball (8) is loaded in the groove of frustum, for reducing the friction that pulley support (9) rotates on frustum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310192184.1A CN103293834B (en) | 2013-05-13 | 2013-05-13 | Transmission limit device for soft cable traction video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310192184.1A CN103293834B (en) | 2013-05-13 | 2013-05-13 | Transmission limit device for soft cable traction video camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103293834A CN103293834A (en) | 2013-09-11 |
| CN103293834B true CN103293834B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310192184.1A Expired - Fee Related CN103293834B (en) | 2013-05-13 | 2013-05-13 | Transmission limit device for soft cable traction video camera |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486989B (en) * | 2013-09-16 | 2016-05-04 | 南京航空航天大学 | Stay-supported spatial position measuring mechanism and measuring method |
| CN105487449B (en) * | 2015-12-31 | 2018-01-23 | 西安电子科技大学 | A kind of special motion controller for being used for four ropes traction cameras people |
| CN105763149B (en) * | 2016-05-18 | 2018-04-13 | 上海工程技术大学 | The operation platform of distributed solar energy solar panel based on wire saws in parallel |
| CN106903675A (en) * | 2017-04-11 | 2017-06-30 | 河北科技大学 | A kind of telecontrol equipment based on flexible cable parallel technology |
| CN107098276A (en) * | 2017-05-12 | 2017-08-29 | 江苏信息职业技术学院 | A kind of rope suspension crane |
| GB2563233B (en) * | 2017-06-06 | 2022-09-14 | Cmr Surgical Ltd | Pulley arrangement and pulley guard for articulating a surgical instrument |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2428629Y (en) * | 2000-05-25 | 2001-05-02 | 揭阳市南光实业有限公司 | Universal pulley seat |
| CN2639035Y (en) * | 2003-09-04 | 2004-09-08 | 陈秋德 | Structure of castor base |
| CN2808619Y (en) * | 2005-05-20 | 2006-08-23 | 圣佰企业有限公司 | Steering wheel seat structure |
| CN2871259Y (en) * | 2006-01-09 | 2007-02-21 | 郭九全 | Universal-wheel rack |
| CN101858483A (en) * | 2010-04-26 | 2010-10-13 | 飞猫影视技术(北京)有限公司 | Three-dimensional ropeway system |
| CN102117075B (en) * | 2011-01-28 | 2014-04-09 | 西安电子科技大学 | Control method for position of photograph camera hauled by suspension cable |
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| CN103293834A (en) | 2013-09-11 |
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Granted publication date: 20150902 Termination date: 20200513 |