CN104594412A - Multi-closed-chain connecting rod controllable excavating mechanism with double parallelogram mechanism - Google Patents
Multi-closed-chain connecting rod controllable excavating mechanism with double parallelogram mechanism Download PDFInfo
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- CN104594412A CN104594412A CN201410826512.3A CN201410826512A CN104594412A CN 104594412 A CN104594412 A CN 104594412A CN 201410826512 A CN201410826512 A CN 201410826512A CN 104594412 A CN104594412 A CN 104594412A
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- connecting rod
- revolute pair
- large arm
- driving lever
- electromagnetic locking
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Abstract
A multi-closed-chain connecting rod controllable excavating mechanism with a double parallelogram mechanism comprises a rack, a big arm tilting mechanism, a bucket arm lifting mechanism, a bucket turnover mechanism and electromagnetic locking devices. The big arm tilting mechanism comprises a big arm and a tilting mechanism, the bucket arm lifting mechanism comprises a bucket arm and a lifting mechanism, the bucket turnover mechanism comprises a bucket and a turnover mechanism, the electromagnetic locking devices are arranged on revolute pairs, and the active metamorphism function is achieved through electromagnetic locking to the revolute pairs. According to the multi-closed-chain connecting rod controllable excavating mechanism with the double parallelogram mechanism, a connecting rod drive mechanism is adopted to replace traditional hydraulic drive, the defect that a hydraulic system of a hydraulic excavator is complex and easy to leak oil is overcome. Due to the fact that the electromagnetic locking devices are arranged on the revolute pairs, the active metamorphism is achieved according to different operating conditions, the flexibility of the hydraulic excavator is not only achieved, but also three freedom degree excavating operation is achieved through using two driving levers, the excavating mechanism cost is reduced, and the manufacture of various excavators and other engineering machinery is applicable.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism.
Background technology
Excavator is a kind of common engineering machinery, is mainly used in various earthwork construction.Wherein hydraulic crawler excavator is a most widely used class excavator, but hydraulic system manufacturing cost is high, easily occurs the problems such as leakage of oil, and these are all the long-standing thorny problems of hydraulic excavator.And traditional single-degree-of-freedom mechanical digging machine, be commonly called as " power shovel ", can only realize simply and the track that can not change output, therefore can not in the application of field acquisition widely as hydraulic excavator.
Along with the development of motor technology and the raising of control technology, controllable mechanism is that engineering machinery provides wide development space, not only having that working space is large by controlling motor-driven multiple degrees of freedom controllable mechanism, flexible movements, complicated and variable movement locus can be completed export, also there is low cost of manufacture simultaneously, the advantages such as maintaining is simple, controllable-mechanism type excavator is owing to instead of hydraulic drive with multiple degrees of freedom linkage, avoid hydraulic system requirement on machining accuracy high, maintaining cost is high, easily produces the problems such as leakage of oil.But, existing controllable-mechanism type excavator mainly relies on multivariant linkage work, multiple degrees of freedom linkage was controlled in the past, often need to carry out drived control with the control motor with linkage degree of freedom equivalent amount, not only considerably increase manufacturing cost, and adding the complexity of frame transmission system, these shortcomings have certain restriction to multiple degrees of freedom controllable mechanism in the application of engineering machinery field.
Summary of the invention
The object of the present invention is to provide a kind of many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism, the shortcoming that conventional hydraulic excavator maintenance cost is high, operation noise large, Hydraulic Elements cost is high, reaction is sensitive not can be overcome, simultaneously, the usage quantity of driving lever can also be reduced, to reduce controllable motor quantity, reduce digging mechanism manufacturing cost.
The present invention achieves the above object by the following technical programs: a kind of many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism, comprise frame, large arm swing mechanism, dipper act descending mechanism, bucket turnover mechanism and electromagnetic locking device, concrete structure and connected mode are:
Described large arm swing mechanism is made up of large arm, first connecting rod, second connecting rod and third connecting rod, described first connecting rod is connected with frame by the first revolute pair, described second connecting rod is connected with frame by the second revolute pair, the first connecting rod other end is connected with third connecting rod by the 3rd revolute pair, the second connecting rod other end is connected with third connecting rod by the 4th revolute pair, third connecting rod is connected with large arm by the 5th revolute pair
Described dipper lifts descending mechanism by dipper, 5th connecting rod, six-bar linkage and the first driving lever composition, described first driving lever is connected with third connecting rod by the 8th revolute pair, the first driving lever other end is connected with dipper by the 9th revolute pair, the dipper other end is connected with the 5th connecting rod by the 14 revolute pair, 5th connecting rod is connected with six-bar linkage by the 15 revolute pair simultaneously, the other end of the 5th connecting rod is connected with bucket by the tenth revolute pair, the six-bar linkage other end is connected with large arm by the 16 revolute pair, rotate vice division chief the 9th and second electromagnetic locking device is installed,
Described bucket turnover mechanism is made up of the second driving lever, double leval jib, large arm and scraper bowl, described second driving lever is connected with first connecting rod by the 11 revolute pair, the second driving lever other end is connected with double leval jib by the 12 revolute pair, double leval jib is connected with large arm by the 6th revolute pair, the end of described large arm is connected with scraper bowl by the 13 revolute pair
Described electromagnetic locking device is two, be arranged on the 6th revolute pair and the 9th respectively and rotate vice division chief, the operating mode different according to digging mechanism is locked in good time, when large arm swing, the 6th electromagnetic locking device rotating vice division chief is opened, the 6th revolute pair degree of gaining freedom, 9th electromagnetic locking device rotating vice division chief is locked, 9th revolute pair loses degree of freedom, and now, large arm is at the second driving lever effect lower swing.When scraper bowl swings separately, all lock the 6th revolute pair and the 9th revolute pair, the 6th revolute pair and the 9th revolute pair all lose degree of freedom.In whole digging operation process, the electromagnetic locking device at two places, according to different working conditions, suitable locking, to be opened, and jointly completes digging operation,
Described first driving lever, the second driving link are respectively by driven by servomotor.
Outstanding advantages of the present invention is:
1, utilize link transmission to substitute hydraulic drive, solve conventional excavators cost of upkeep high, the shortcomings such as Hydraulic Elements cost is high, and operation noise is large;
2, adopt and on linkage, to install electromagnetic locking device additional realize digging mechanism and initiatively become born of the same parents' function, make this digging mechanism lock some revolute pair according to different operating mode, reduce the degree of freedom of digging mechanism in good time, thus decrease the usage quantity of controllable motor.Compare other multiple degrees of freedom excavating mechanism of controllable, this invention utilizes two controllable motors can complete Three Degree Of Freedom digging operation, not only greatly reduce the cost of excavating mechanism of controllable, and reduce the complexity of frame transmission system, be more applicable for and manufacture all kinds of excavator and other engineering machinery;
3, this digging mechanism driving link type of drive is flexible and changeable, can select driven by servomotor, the drive forms such as combination drive, not only environmental protection, and be easy to realize Long-distance Control, reduces the advantage of labor strength.
Accompanying drawing explanation
Fig. 1 is the structural representation of the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention.
Fig. 2 is the large arm swing mechanism schematic diagram of the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention.
Fig. 3 is that the dipper of the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention lifts descending mechanism schematic diagram.
Fig. 4 is the bucket turnover mechanism schematic diagram of the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention.
Fig. 5 is the stereogram of the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention.
Detailed description of the invention
Below by way of drawings and Examples, technical scheme of the present invention is described further.
Contrast Fig. 1, the many closed chains connecting rod excavating mechanism of controllable containing two parallel-crank mechanism of the present invention, comprises frame 1, large arm swing mechanism, dipper act descending mechanism, bucket turnover mechanism and the first electromagnetic locking device 7 and the second electromagnetic locking device 22.Concrete structure and annexation are:
Contrast Fig. 1 and Fig. 2, described large arm swing mechanism is made up of large arm 8, first connecting rod 23, second connecting rod 18 and third connecting rod 20, described first connecting rod 23 is connected with frame 1 by the first revolute pair 24, second connecting rod 18 is connected with frame 1 by the second revolute pair 17, first connecting rod 23 other end is connected with third connecting rod 20 by the 3rd revolute pair 21, second connecting rod 18 other end is connected with third connecting rod 20 by the 4th revolute pair 19, and third connecting rod 20 is connected with large arm 8 by the 5th revolute pair 9.
Contrast Fig. 1 and Fig. 3, described dipper lifts descending mechanism by dipper 13, 5th connecting rod 25, six-bar linkage 26 and the first driving lever 15 form, described first driving lever 15 is connected with third connecting rod 20 by the 8th revolute pair 16, first driving lever 15 other end is connected with dipper 13 by the 9th revolute pair 14, dipper 13 other end is connected with the 5th connecting rod 25 by the 14 revolute pair 27, 5th connecting rod 25 is connected with six-bar linkage 26 by the 15 revolute pair 28 simultaneously, 5th connecting rod 25 other end is connected with bucket 11 by the tenth revolute pair 15, six-bar linkage 26 other end is connected with large arm 8 by the 16 revolute pair 29, at the 9th revolute pair 14 place, the second electromagnetic locking device 22 is installed.
Contrast Fig. 1 and Fig. 4, described bucket turnover mechanism is made up of the second driving lever 3, double leval jib 5, large arm 8 and scraper bowl 11, described second driving lever 3 is connected with first connecting rod 23 by the 11 revolute pair 2, second driving lever 3 other end is connected with double leval jib 5 by the 12 revolute pair 4, double leval jib 5 is connected with large arm 8 by the 6th revolute pair 6, and the end of described large arm 8 is connected with scraper bowl 11 by the 13 revolute pair 10.
Described first electromagnetic locking device 7 and the second electromagnetic locking device 22 are arranged on the 6th revolute pair 6 and the 9th revolute pair 14 place respectively, and the operating mode different according to digging mechanism is locked in good time.When large arm 8 swings, the electromagnetic locking device at the 6th revolute pair 6 place is opened, the 6th revolute pair 6 degree of gaining freedom, and the electromagnetic locking device locking at the 9th revolute pair 14 place, the 9th revolute pair 14 loses degree of freedom, and now, large arm 8 acts on lower swing at the second driving lever 3.When scraper bowl 11 swings separately, all lock the 6th revolute pair 6 and the 9th revolute pair 14, the 6th revolute pair 6 and the 9th revolute pair 14 all lose degree of freedom.In whole digging operation process, the electromagnetic locking device at two places, according to different working conditions, suitable locking, to be opened, and jointly completes digging operation.
Described first driving lever 15, second driving link 3 is respectively by driven by servomotor.
Claims (1)
1., containing many closed chains connecting rod excavating mechanism of controllable of two parallel-crank mechanism, comprise frame, large arm swing mechanism, dipper act descending mechanism, bucket turnover mechanism and electromagnetic locking device, it is characterized in that, concrete structure and connected mode are:
Described large arm swing mechanism is made up of large arm, first connecting rod, second connecting rod and third connecting rod, described first connecting rod is connected with frame by the first revolute pair, described second connecting rod is connected with frame by the second revolute pair, the first connecting rod other end is connected with third connecting rod by the 3rd revolute pair, the second connecting rod other end is connected with third connecting rod by the 4th revolute pair, third connecting rod is connected with large arm by the 5th revolute pair
Described dipper lifts descending mechanism by dipper, 5th connecting rod, six-bar linkage and the first driving lever composition, described first driving lever is connected with third connecting rod by the 8th revolute pair, the first driving lever other end is connected with dipper by the 9th revolute pair, the dipper other end is connected with the 5th connecting rod by the 14 revolute pair, 5th connecting rod is connected with six-bar linkage by the 15 revolute pair simultaneously, the other end of the 5th connecting rod is connected with bucket by the tenth revolute pair, the six-bar linkage other end is connected with large arm by the 16 revolute pair, rotate vice division chief the 9th and second electromagnetic locking device is installed,
Described bucket turnover mechanism is made up of the second driving lever, double leval jib, large arm and scraper bowl, described second driving lever is connected with first connecting rod by the 11 revolute pair, the second driving lever other end is connected with double leval jib by the 12 revolute pair, double leval jib is connected with large arm by the 6th revolute pair, the end of described large arm is connected with scraper bowl by the 13 revolute pair
Described electromagnetic locking device is two, be arranged on the 6th revolute pair and the 9th respectively and rotate vice division chief, the operating mode different according to digging mechanism is locked in good time, when large arm swing, the 6th electromagnetic locking device rotating vice division chief is opened, the 6th revolute pair degree of gaining freedom, 9th electromagnetic locking device rotating vice division chief is locked, 9th revolute pair loses degree of freedom, and now, large arm is at the second driving lever effect lower swing.When scraper bowl swings separately, all lock the 6th revolute pair and the 9th revolute pair, the 6th revolute pair and the 9th revolute pair all lose degree of freedom.In whole digging operation process, the electromagnetic locking device at two places, according to different working conditions, suitable locking, to be opened, and jointly completes digging operation,
Described first driving lever, the second driving link are respectively by driven by servomotor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826512.3A CN104594412A (en) | 2014-12-25 | 2014-12-25 | Multi-closed-chain connecting rod controllable excavating mechanism with double parallelogram mechanism |
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| CN201410826512.3A CN104594412A (en) | 2014-12-25 | 2014-12-25 | Multi-closed-chain connecting rod controllable excavating mechanism with double parallelogram mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594414A (en) * | 2014-12-25 | 2015-05-06 | 广西大学 | Electromagnetic type active metamorphic 4R-5R-4R multi-closed-chain connecting rod controllable excavation mechanism |
| CN106608544A (en) * | 2016-11-28 | 2017-05-03 | 广西大学 | Feed stacking mechanical arm of variable-degree-of-freedom connecting rod mechanism containing revolving pair locking device |
| CN106629021A (en) * | 2016-11-28 | 2017-05-10 | 广西大学 | Timber grab with freedom-degree-variable linkage mechanism |
| CN106703095A (en) * | 2016-11-30 | 2017-05-24 | 广西大学 | Method for grabbing and loading industrial waste through variable-freedom-degree linkage mechanism |
-
2014
- 2014-12-25 CN CN201410826512.3A patent/CN104594412A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594414A (en) * | 2014-12-25 | 2015-05-06 | 广西大学 | Electromagnetic type active metamorphic 4R-5R-4R multi-closed-chain connecting rod controllable excavation mechanism |
| CN106608544A (en) * | 2016-11-28 | 2017-05-03 | 广西大学 | Feed stacking mechanical arm of variable-degree-of-freedom connecting rod mechanism containing revolving pair locking device |
| CN106629021A (en) * | 2016-11-28 | 2017-05-10 | 广西大学 | Timber grab with freedom-degree-variable linkage mechanism |
| CN106703095A (en) * | 2016-11-30 | 2017-05-24 | 广西大学 | Method for grabbing and loading industrial waste through variable-freedom-degree linkage mechanism |
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Application publication date: 20150506 |