CN201519962U - Flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive - Google Patents

Flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive Download PDF

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Publication number
CN201519962U
CN201519962U CN2009200495935U CN200920049593U CN201519962U CN 201519962 U CN201519962 U CN 201519962U CN 2009200495935 U CN2009200495935 U CN 2009200495935U CN 200920049593 U CN200920049593 U CN 200920049593U CN 201519962 U CN201519962 U CN 201519962U
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CN
China
Prior art keywords
crank
combination drive
bar
double
mechanisms
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CN2009200495935U
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Chinese (zh)
Inventor
訾斌
朱真才
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中国矿业大学
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Priority to CN2009200495935U priority Critical patent/CN201519962U/en
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Publication of CN201519962U publication Critical patent/CN201519962U/en

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Abstract

A flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive is formed by four sets of combination drive double-crank five-bar mechanisms symmetrically arranged in a cross shape, a wire tower support, and flexible wires which are respectively connected to the four sets of combination drive double-crank five-bar mechanisms and drag a weight block. Each set of combination drive double-crank five-bar mechanism comprises a three-phase asynchronous motor, a servo motor, a speed reducer, a belt pulley transmission mechanism and a double-crank five-bar mechanism; and the wire tower support is formed by four upright columns, a wire tower lower beam and a wire tower upper beam which are respectively connected to the four upright columns, and a flexible wire guiding pulley is respectively arranged on each upright column. The combination drive mechanism combining two types of drive mechanisms combines advantages of high efficiency and bearing capacity of conventional mechanisms and flexibility and adjustability of servo mechanisms to overcome shortages of lacking flexibility of the conventional mechanisms and being unable to bear large load of the servo mechanisms, thereby having the advantages of high efficiency and bearing capacity of the conventional mechanisms and flexibility and adjustability of the servo mechanisms.

Description

Spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism
Technical field
The utility model relates to a kind of flexible cable parallel mechanism, particularly a kind of implementation space three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism.
Background technology
Flexible cable parallel mechanism is meant and adopts gentle rope to replace the parallel robot of conventional linkage as traction element, and the joint driving mechanism of gentle rope parallel robot is one of vitals of robot.To a driving mechanism, care be power output size and operation adaptability degree.For the former, wish that mechanism's power output is the bigger the better, and, wish that the adaptive degree of operation is high more good more for the latter.Usually, there are two kinds of motor of common normal electric motor with speed and servomotor to drive separately in the robot system respectively.Common normal electric motor with speed power height, but the online bad adaptability of operation (is after off-line sets its rotating speed, can't onlinely adjust), and servomotor has good online adaptability, but the power output of unit price lower (be under the equal-wattage situation, the price of servomotor is than high many of common normal electric motor with speed).In recent years, along with the gentle application of rope parallel robot in the engineering field constantly enlarges, this also has higher requirement to gentle rope parallel robot, not only require high accuracy, high efficiency, the running of heavy load ground, and require to have bigger flexibility output, can change the output movement rule rapidly, easily.Yet,, also directly do not utilize servomotor to drive the gentle rope parallel robot of large span, high capacity at present owing to be subjected to the restriction of servo-electric acc power and moment of torsion.
Summary of the invention
Technical problem: the purpose of this utility model is to overcome deficiency of the prior art, provide a kind of simple in structure, can finish heavy load running, high-performance motion output, realize the compound movement rule, realize the spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism of carrying heavy goods.
Technical scheme: spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism of the present utility model, by the symmetrically arranged four groups of combination drive double-crank five-bar mechanisms of across, the Sarasota support, the gentle rope that links to each other with four groups of combination drive double-crank five-bar mechanisms respectively and draw weight block constitutes, combination drive double-crank five-bar mechanism is by threephase asynchronous, servomotor, decelerator, pulley transmission mechanism and double-crank five-bar mechanism constitute, wherein, threephase asynchronous links to each other with pulley transmission mechanism, servomotor) link to each other with decelerator through shaft coupling, pulley transmission mechanism links to each other with the double-crank five-bar mechanism respectively with decelerator; The double-crank five-bar mechanism by the crank big disk, be connected the long connecting rod on the crank big disk, crank roundel, the short connecting rod that is connected on the crank roundel constitute, long connecting rod and short connecting rod hinged and with gentle Suo Xianglian; The Sarasota support is made of four root posts, the Sarasota sill that links to each other with four root posts respectively and Sarasota entablature.
Described threephase asynchronous is a constant speed motor; Be equipped with gentle rope leading block on four root posts of described Sarasota support, gentle rope leading block is two, and arrangement meets at right angles.
Beneficial effect: the hybrid drive that utilizes two kinds of driving mechanisms to combine, the compatible flexible adjustable advantage of the high efficiency of traditional mechanism, high-bearing capacity and servo-actuating device has remedied the defective that flexibility that traditional machinery lacks and servo control mechanism can not bear big load.The flexible adjustable advantage of high efficiency, high-bearing capacity and servo-actuating device with traditional mechanism, combination drive double-crank five-bar mechanism is incorporated into flexible cable parallel mechanism, can finish heavy load running, high-performance motion output, realize the complicated characteristics of motion, it is simple in structure, working space is big, easy to assemble, can recombinate, degree of modularity height, load capacity is strong, movement velocity is fast, cheap, have practicality widely.
Description of drawings
Fig. 1 is a combination drive flexible cable parallel mechanism front view of the present utility model;
Fig. 2 is a combination drive flexible cable parallel mechanism vertical view of the present utility model;
Fig. 3 is a combination drive double-crank five-bar mechanism front view of the present utility model;
Fig. 4 is a combination drive double-crank five-bar mechanism vertical view of the present utility model.
Among the figure: 1-combination drive double-crank five-bar mechanism, 2-threephase asynchronous, 3-small belt pulley, 4-big belt pulley, 5-belt wheel bracing frame, 6-crank big disk, 7-crank roundel, 8-decelerator, the 9-shaft coupling, 10-servomotor, 11-short connecting rod, 12-pulley bracket, the 13-rope leading block that softens, 14-belt shaft, 15-long connecting rod, 16-Sarasota sill, 17-Sarasota entablature, 18-Sarasota support, the 19-weight block, the 20-rope that softens, 21-pedestal.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
The utility model implementation space three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism is constituted by four gentle ropes 20 of the identical combination drive double-crank five-bar mechanism 1 of four groups of structures, Sarasota support 18 and traction weight block 19.Four groups of combination drive double-crank five-bar mechanism 1 across are symmetrical arranged, Sarasota support 18 is located at the inboard of four groups of combination drive double-crank five-bar mechanisms, it is made of four root posts, the Sarasota sill 16 that links to each other with four root posts respectively and Sarasota entablature 17, parallelogram, be equipped with gentle rope leading block 13 on every root post, gentle rope leading block 13 is two, and the arrangement that meets at right angles is fixed on column by pulley bracket 12.Combination drive double-crank five-bar mechanism 1 respectively by the threephase asynchronous 2 of constant speed and servomotor 10 as driver, combination drive double-crank five-bar mechanism 1 is made of threephase asynchronous 2, servomotor 10, decelerator 8, pulley transmission mechanism and double-crank five-bar mechanism, threephase asynchronous 2 links to each other with pulley transmission mechanism, servomotor 10 links to each other with decelerator 8 through shaft coupling 9, and pulley transmission mechanism links to each other with the double-crank five-bar mechanism respectively with decelerator 8; Pulley transmission mechanism is made of small belt pulley 3, big belt pulley 4, belt wheel bracing frame 5, belt shaft 14; The double-crank five-bar mechanism by crank big disk 6, be connected the long connecting rod 15 on the crank big disk 6, crank roundel 7, the short connecting rod 11 that is connected on the crank roundel 7 constitute, long connecting rod 15 and short connecting rod 11 are hinged and link to each other with gentle rope 20.Combination drive double-crank five-bar mechanism 1 is installed on the pedestal 21, and four spikes are arranged at pedestal 21 bottoms, the square through hole that passes when its middle part has the connecting rod downward movement that is suitable for combination drive double-crank five-bar mechanism 1.
Operation principle: the threephase asynchronous 2 of constant speed and 10 whiles of servomotor are as the power source of combination drive double-crank five-bar mechanism 1, servomotor 10 links to each other with decelerator 8 through shaft coupling 9, be connected with short connecting rod 11 by crank roundel 7, and then regulating the output movement of combination drive double-crank five-bar mechanism 1; The threephase asynchronous 2 of constant speed links to each other with pulley transmission mechanism, is being connected with long connecting rod 15 by crank big disk 6, and then is providing major impetus for combination drive double-crank five-bar mechanism 1; The input motion that constant speed threephase asynchronous 2 and servomotor are 10 two types is hinged synthetic with long connecting rod 15 by short connecting rod 11, make combination drive double-crank five-bar mechanism 1 when guaranteeing output movement, the power distribution characteristic of combination drive double-crank five-bar mechanism 1 also improves.Four groups of identical combination drive double-crank five-bar mechanisms 1 of structure produce gyration, on the flexible cable parallel mechanism that constitutes by Sarasota sill 16, Sarasota entablature 17, Sarasota support 18, pulley bracket 12 and gentle rope leading block 13, drive the motion of the weight block 19 implementation space three-dimensional translating frees degree by four gentle ropes 20.Whole combination drive flexible cable parallel mechanism has the spatial three-dimensional translational free degree, drives 19 motions of gentle rope 20 traction weight block by four groups of combination drive double-crank five-bar mechanisms 1.

Claims (4)

1. spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism is characterized in that: it constitutes by the identical combination drive double-crank five-bar mechanism (1) of four groups of structures with by the parallel institution of four gentle ropes (20) combination of the Sarasota support (18) of parallelogram and traction weight block (19); Four groups of combination drive double-crank five-bar mechanisms (1) across is symmetrical arranged, and Sarasota support (18) is located at the inboard of four groups of combination drive double-crank five-bar mechanisms (1); Described combination drive double-crank five-bar mechanism is become with the double-crank five-bar mechanism by threephase asynchronous (2), servomotor (10), decelerator (8), pulley transmission mechanism, wherein, threephase asynchronous (2) links to each other with pulley transmission mechanism, servomotor (10) links to each other with decelerator (8) through shaft coupling (9), and pulley transmission mechanism links to each other with the double-crank five-bar mechanism respectively with decelerator (8); The double-crank five-bar mechanism by crank big disk (6), be connected the long connecting rod (15) on the crank big disk (6), crank roundel (7), the short connecting rod (11) that is connected on the crank roundel (7) constitute, and long connecting rod (15) is hinged with short connecting rod (11) and link to each other with gentle rope (20); Sarasota support (18) is made of four root posts, the Sarasota sill (16) that links to each other with four root posts respectively and Sarasota entablature (17).
2. spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism according to claim 1 is characterized in that: described threephase asynchronous is a constant speed motor.
3. spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism according to claim 1 is characterized in that: be equipped with gentle rope leading block (13) on four root posts of described Sarasota support (18).
4. spatial three-dimensional translational degree of freedom (DOF) combination drive flexible cable parallel mechanism according to claim 3 is characterized in that: described gentle rope leading block (13) is two, and arrangement meets at right angles.
CN2009200495935U 2009-10-09 2009-10-09 Flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive CN201519962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200495935U CN201519962U (en) 2009-10-09 2009-10-09 Flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive

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Application Number Priority Date Filing Date Title
CN2009200495935U CN201519962U (en) 2009-10-09 2009-10-09 Flexible wire parallel mechanism with spatial three-degree-of-freedom translational combination drive

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CN201519962U true CN201519962U (en) 2010-07-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240737A (en) * 2013-05-08 2013-08-14 中国矿业大学 Three-degree-of-freedom hybrid drive winding type flexible cable parallel mechanism
CN104385303A (en) * 2014-09-23 2015-03-04 合肥工业大学 Circular orbit-type safety monitoring device and monitoring method for wire driven parallel robot
CN105364911A (en) * 2015-11-23 2016-03-02 清华大学 Top-supported type over-span space robot with four ropes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240737A (en) * 2013-05-08 2013-08-14 中国矿业大学 Three-degree-of-freedom hybrid drive winding type flexible cable parallel mechanism
CN103240737B (en) * 2013-05-08 2015-02-04 中国矿业大学 Three-degree-of-freedom hybrid drive winding type flexible cable parallel mechanism
CN104385303A (en) * 2014-09-23 2015-03-04 合肥工业大学 Circular orbit-type safety monitoring device and monitoring method for wire driven parallel robot
CN104385303B (en) * 2014-09-23 2016-05-11 合肥工业大学 For circular orbit formula safety monitoring device and the method for supervising of flexible cable parallel robot
CN105364911A (en) * 2015-11-23 2016-03-02 清华大学 Top-supported type over-span space robot with four ropes

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Granted publication date: 20100707

Effective date of abandoning: 20091009