CN102408074A - System and method for limiting crane rotation region and crane comprising the system - Google Patents
System and method for limiting crane rotation region and crane comprising the system Download PDFInfo
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- CN102408074A CN102408074A CN2011103328902A CN201110332890A CN102408074A CN 102408074 A CN102408074 A CN 102408074A CN 2011103328902 A CN2011103328902 A CN 2011103328902A CN 201110332890 A CN201110332890 A CN 201110332890A CN 102408074 A CN102408074 A CN 102408074A
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Abstract
The invention discloses a system for limiting crane rotation region, which comprises a main control device, a detection device, an electric switch device, a buffer device, a user input device and a display device; the main control device is connected with the detection device, the electric switch device, the user input device, the buffer device and the display device respectively; the electric switch device is connected with a hydraulic valve; and when practical rotation angle approaches or reaches user-defined safety rotation angle threshold value, the main control device controls and starts the buffer device and controls the electric switch device to cut off oil path of the hydraulic valve. The invention has high reliability and accurate rotation angle; a platform for user to define limit value is provided; and impact force is small as the crane is hydraulically limited and stopped.
Description
Technical field
The present invention relates to the limiter of moment system, relate in particular to a kind of crane rotation region limits system and method and comprise the hoisting crane of this system.
Background technology
In the present little tonnage crawler crane, get on the bus and in 360 degree, to turn round, not restriction on the oil circuit.Hoisting crane is constructed and can be run into various operating modes; Obstacle is a lot of above many construction sites; If operator misoperation; Cause crane arm support and tail balancing weight to collide obstacle easily, can cause certain injury to obstacle and crawler crane like this, even the danger that causes hoisting crane to tumble is arranged.In addition,, can produce very big impulsive force when hydraulic valve stops suddenly, cause danger easily owing to do not have spacing restriction on the oil circuit.
Chinese patent CN 2592616Y discloses a kind of tower crane operation monitoring device; It comprises pulling force sensor, touch-screen, power-off protector; Pulling force sensor, rotary encoder import the pulling force of hoist rope and the revolution signal of luffing motor into Programmable Logic Controller respectively; Programmable Logic Controller calculates hoisting moment in view of the above; And itself and the load-carrying ability curve that is stored in the Programmable Logic Controller compared, automatic guidance hoists, luffing and revolution frequency converter, makes corresponding motor operate in the optimum speed state.This technical scheme is solidificated in control logic in the Programmable Logic Controller in advance, can't let the user at work-site parameters such as degreeof turn set in real time; Another piece Chinese patent CN 102180417A discloses a kind of limiter of moment that safe turning circle protection under the various supporting leg states is provided; Comprise limiter of moment system, degreeof turn coder and supporting leg collapsing length sensor; The limiter of moment system comprises main frame, telltale and sensor; This technical scheme is to realize specific logic through before main frame being programmed in work, and when work, also can't carries out real time modifying when confirming the safe range of crane rotation angle; Use underaction, convenient.
Summary of the invention
Problem to above-mentioned existence; The purpose of this invention is to provide a kind of crane rotation region limits system and method; Make the revolution action of hoisting crane only limit in the angular regions that the client sets effective; And support the client to carry out real-time parameter and set, improved the comformability of vehicle environment at work-site, safe and reliable.Another object of the present invention provides a kind of hoisting crane that comprises above-mentioned restriction system.
The objective of the invention is to realize through following technical proposals:
A kind of crane rotation region limits system, wherein:
Comprise main control unit, detector, electric switchgear, shock absorber, user input apparatus and read out instrument; Said main control unit is connected with said detector, said electric switchgear, said user input apparatus, said shock absorber, said read out instrument respectively, and said electric switchgear connects hydraulic valve;
Said detector is loaded on central swivel coupling place, is used to gather the degreeof turn signal;
Said user input apparatus provides the user inputting interface, receives the user instruction input;
Said master controller is monitored the incoming signal of said detector, when actual degreeof turn near or when arriving user's set angle threshold value, said main controller controls is opened said shock absorber and is controlled said electric switchgear and cut off the hydraulic valve oil circuit;
Said shock absorber is positioned on the control oil channel of rotary pump and rotary motor, in order to dominant discharge, reduces the hydraulic oil flow velocity;
Said electric switchgear opens and closes in order to the circuit of control shock absorber.
Above-mentioned crane rotation region limits system, wherein, said detector sends to said main control unit to the revolution count signal through the CAN-BUS bus and calculates degreeof turn.
Above-mentioned crane rotation region limits system, wherein, said detector is a rotary encoder.
Above-mentioned crane rotation region limits system, wherein, said shock absorber is a rotary buffering valve.
Above-mentioned crane rotation region limits system, wherein, said electric switchgear is an electromagnetic valve.
Above-mentioned crane rotation region limits system, wherein, said rotary encoder is absolute type encoder or incremental encoder.
Above-mentioned crane rotation region limits system, wherein, said read out instrument is a Liquid Crystal Display (LCD).
The present invention then also discloses the method for limiting of a kind of as above-mentioned any described crane rotation region limits system, wherein, comprises the following steps:
The user imports safe degreeof turn threshold value through user input apparatus;
Hoisting crane carries out normal operation, and main control unit judges whether the turning circle restriction is effective;
When actual degreeof turn near or during the safe degreeof turn threshold value that arrives that the user sets, main control unit control is opened shock absorber and is controlled electric switchgear and cut off the hydraulic valve oil circuit.
Above-mentioned crane rotation region limits method, wherein, said detector sends to said main control unit to the revolution count signal through the CAN-BUS bus and calculates degreeof turn.
Above-mentioned crane rotation region limits method, wherein, said detector is a rotary encoder.
Above-mentioned crane rotation region limits method, wherein, said shock absorber is a rotary buffering valve.
Above-mentioned crane rotation region limits method, wherein, said electric switchgear is an electromagnetic valve.
Above-mentioned crane rotation region limits method, wherein, said rotary encoder is absolute type encoder or incremental encoder.
Above-mentioned crane rotation region limits method, wherein, said read out instrument is a Liquid Crystal Display (LCD).
The present invention also discloses a kind of hoisting crane at last, and it comprises like above-mentioned each crane rotation region limits system.
Compared with present technology, beneficial effect of the present invention is:
1, calculate degreeof turn through at central swivel coupling coder being installed, it is easy for installation, and reliability height and degreeof turn are accurate;
2, the platform of User Defined limits value is provided.The user can set cooresponding angle secure threshold according to different field conditions, makes the revolution action effective in the angular regions that the client sets.Can improve the comformability of vehicle thus to environment;
3, stop through hydraulic stop, impulsive force is little.
Description of drawings
Fig. 1 is the system architecture diagram of restriction system in the present invention's a kind of crane rotation region limits system and method and the hoisting crane that comprises this system;
Fig. 2 is the FB(flow block) of method for limiting in the present invention's a kind of crane rotation region limits system and method and the hoisting crane that comprises this system;
Fig. 3 is a display interface of checking input angle region limits secure threshold being used in the present invention's a kind of crane rotation region limits system and method and the hoisting crane that comprises this system.
The specific embodiment
Below in conjunction with schematic diagram and concrete operations embodiment the present invention is described further.
Fig. 1 shows the system architecture diagram of a kind of crane rotation region limits of the present invention system; As shown in the figure; This restriction system specifically comprises main control unit, detector, electric switchgear, shock absorber, user input apparatus and read out instrument; Main control unit is connected with detector, electric switchgear, user input apparatus, shock absorber, read out instrument respectively, and the electric switchgear connection is respectively in the left and right sides hydraulic valve on the platform of the left and right sides.Detector is loaded on central swivel coupling place; Be used to gather the degreeof turn signal; User input apparatus provides the user inputting interface, receives the user instruction input, the input angle signal of master controller monitoring detector; When degreeof turn near or when arriving user's set angle threshold value, main controller controls is opened shock absorber and is controlled electric switchgear and cut off left and right sides hydraulic valve oil circuit.Shock absorber is positioned on the control oil channel of rotary pump and rotary motor, and in order to dominant discharge and reduction hydraulic oil flow velocity, electric switchgear opens and closes in order to the circuit of control shock absorber.
Detector sends to main control unit to the revolution count signal through the CAN-BUS bus and calculates degreeof turn.CAN-BUS (Controller Area Network) is a controller local area network; Being the scene of being applied in, between computerized measurement equipment, realizing bidirectional linked list multinode digital communication system, is the bottom control network of a kind of open, digitalisation, multi-point.
Particularly, detector is a rotary encoder.Rotary encoder divides by the signal principle and generally is divided into absolute type encoder and incremental encoder.Absolute type encoder is a sensor of directly exporting digital quantity, and the characteristics of this coder are counting machines not, all can read fixing and the corresponding numerical code in position in the optional position of rotating shaft, and code channel is many more, and resolution is just high more; Incremental encoder is directly to utilize photoelectricity transformation principle to export three prescription wave impulse A, B and Z mutually, and its advantage is that principles of construction is simple, and mechanical mean life can be more than several ten thousand hours, and antijamming capability is strong, and reliability is high, is suitable for long Distance Transmission.Rotary encoder is easy for installation, and reliability height and degreeof turn are accurate.
Shock absorber is a rotary buffering valve; Rotary buffering valve includes valve body; On the valve body of main valve body, have oil inlet with oil outlet and the hydraulic fluid port that removes to be connected the outside HM Hydraulic Motor; Form installation cavity that each valve is installed and the inner flow passage that they are communicated with in the main valve body, have cushion valve to be connected between the inner flow passage that connects hydraulic fluid port respectively in the main valve body, the oil inlet of main valve body and oil outlet connect the oil inlet and the return opening of maneuvering valve respectively through inner flow passage and check valve.
Electric switchgear is an electromagnetic valve, is used to control liquid level valve.Read out instrument is a Liquid Crystal Display (LCD), and telltale is connected with input medias such as keyboards, and the user can carry out keyboard and import cooresponding angle secure threshold according to different field conditions when manipulating crane in real time.
During operation; The user imports safe degreeof turn threshold value through user input apparatus earlier; Such as 45 ° of high angle; Low angle-45 °, this moment, the safe turning circle of hoisting crane be the sector region between-45 ° to 45 °, was used to check shown in the display interface of importing angle region limits secure threshold like Fig. 3; Hoisting crane carries out normal operation, and main control unit judges whether the turning circle restriction is effective; If effectively; When actual degreeof turn near or during the safe degreeof turn threshold value that arrives that the user sets, need forbid revolution, such as as above-mentioned safe turning circle; When actual degreeof turn is 40 °; Main control unit just can be controlled and open shock absorber, and the hydraulic oil flow velocity in the oil circuit begins to slow down, and this moment, main control unit was controlled electric switchgear cut-out hydraulic valve oil circuit simultaneously; Left and right sides hydraulic valve can not suddenly disappear because of the pressure of hydraulic oil and produces very big impulsive force at out-of-work a moment thus, can guarantee that again crane arm support and afterbody are operated in the security standpoint zone simultaneously.The concrete configuration device of above-mentioned each parts is existing mentioning in aforementioned content, do not repeat them here.
The present invention also discloses a kind of hoisting crane at last, and it comprises like above-mentioned each crane rotation region limits system.Because crane rotation region limits system and prior art among the present invention are distinct; Therefore other parts of hoisting crane are not drawn; Those skilled in the art can combine prior art grasp to adopt to comprise the structure of other parts of the hoisting crane of above-mentioned crane rotation region limits system, do not repeat them here.
To sum up, crane rotation region limits system and method for the present invention and comprise that the hoisting crane of this system is easy for installation, reliability height and degreeof turn are accurate; The platform of User Defined limits value is provided; Stop through hydraulic stop, impulsive force is little.
More than specific embodiment of the present invention is described in detail, but the present invention is not restricted to the specific embodiment of above description, it is just as example.To those skilled in the art, any equivalent modifications that the present invention is carried out with substitute also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of having done under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (15)
1. crane rotation region limits system is characterized in that:
Comprise main control unit, detector, electric switchgear, shock absorber, user input apparatus and read out instrument; Said main control unit is connected with said detector, said electric switchgear, said user input apparatus, said shock absorber, said read out instrument respectively, and said electric switchgear connects hydraulic valve;
Said detector is loaded on central swivel coupling place, is used to gather the degreeof turn signal;
Said user input apparatus provides the user inputting interface, receives the user instruction input;
Said master controller is monitored the incoming signal of said detector, when actual degreeof turn near or when arriving user's set angle threshold value, said main controller controls is opened said shock absorber and is controlled said electric switchgear and cut off the hydraulic valve oil circuit;
Said shock absorber is positioned on the control oil channel of rotary pump and rotary motor, in order to dominant discharge, reduces the hydraulic oil flow velocity;
Said electric switchgear opens and closes in order to the circuit of control shock absorber.
2. crane rotation region limits according to claim 1 system is characterized in that, said detector sends to said main control unit to the revolution count signal through the CAN-BUS bus and calculates degreeof turn.
3. crane rotation region limits according to claim 1 and 2 system is characterized in that said detector is a rotary encoder.
4. crane rotation region limits according to claim 1 and 2 system is characterized in that said shock absorber is a rotary buffering valve.
5. crane rotation region limits according to claim 1 and 2 system is characterized in that said electric switchgear is an electromagnetic valve.
6. crane rotation region limits according to claim 3 system is characterized in that said rotary encoder is absolute type encoder or incremental encoder.
7. crane rotation region limits according to claim 1 and 2 system is characterized in that said read out instrument is a Liquid Crystal Display (LCD).
8. the method for limiting of any described crane rotation region limits system in a kind as the above-mentioned claim 1 to 7 is characterized in that, comprises the following steps:
The user imports safe degreeof turn threshold value through user input apparatus;
Hoisting crane carries out normal operation, and main control unit judges whether the turning circle restriction is effective;
When actual degreeof turn near or during the safe degreeof turn threshold value that arrives that the user sets, main control unit control is opened shock absorber and is controlled electric switchgear and cut off the hydraulic valve oil circuit.
9. crane rotation region limits method according to claim 8 is characterized in that, said detector sends to said main control unit to the revolution count signal through the CAN-BUS bus and calculates degreeof turn.
10. crane rotation region limits method according to claim 8 is characterized in that said detector is a rotary encoder.
11. crane rotation region limits method according to claim 8 is characterized in that said shock absorber is a rotary buffering valve.
12. crane rotation region limits method according to claim 8 is characterized in that said electric switchgear is an electromagnetic valve.
13. crane rotation region limits method according to claim 8 is characterized in that said rotary encoder is absolute type encoder or incremental encoder.
14. crane rotation region limits method according to claim 8 is characterized in that said read out instrument is a Liquid Crystal Display (LCD).
15. a hoisting crane is characterized in that, comprises like each described crane rotation region limits system of claim 1 to 7.
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| CN2011103328902A CN102408074A (en) | 2011-10-28 | 2011-10-28 | System and method for limiting crane rotation region and crane comprising the system |
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| CN2011103328902A CN102408074A (en) | 2011-10-28 | 2011-10-28 | System and method for limiting crane rotation region and crane comprising the system |
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Cited By (8)
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| CN102627232A (en) * | 2012-04-17 | 2012-08-08 | 中联重科股份有限公司 | Gyration angle monitoring device, method and system as well as engineering mechanical equipment |
| CN102849634A (en) * | 2012-09-17 | 2013-01-02 | 德瑞斯博海机械设备（大连）有限公司 | Crane rotating/limiting/setting system based on PLC (programmable logic controller) |
| CN103264970A (en) * | 2013-06-04 | 2013-08-28 | 西安丰树电子科技发展有限公司 | Self-learning-based rotation control method for dangerous condition of tower crane |
| CN103588116A (en) * | 2013-11-12 | 2014-02-19 | 中联重科股份有限公司 | Crane calibration device, method and system as well as engineering machinery |
| CN103626056A (en) * | 2013-12-05 | 2014-03-12 | 徐州重型机械有限公司 | Amplitude control device and method for crane jib and crane |
| CN104453238A (en) * | 2014-11-13 | 2015-03-25 | 恒天创丰重工有限公司 | Boom with controllable work region and work region calculation method of boom |
| CN105314384A (en) * | 2015-11-30 | 2016-02-10 | 苏州康贝尔电子设备有限公司 | Turning machine |
| CN108002258A (en) * | 2017-12-04 | 2018-05-08 | 浙江三装备有限公司 | Turn round limitation system, revolution method for limiting and crane |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627232A (en) * | 2012-04-17 | 2012-08-08 | 中联重科股份有限公司 | Gyration angle monitoring device, method and system as well as engineering mechanical equipment |
| CN102849634A (en) * | 2012-09-17 | 2013-01-02 | 德瑞斯博海机械设备（大连）有限公司 | Crane rotating/limiting/setting system based on PLC (programmable logic controller) |
| CN103264970A (en) * | 2013-06-04 | 2013-08-28 | 西安丰树电子科技发展有限公司 | Self-learning-based rotation control method for dangerous condition of tower crane |
| CN103588116A (en) * | 2013-11-12 | 2014-02-19 | 中联重科股份有限公司 | Crane calibration device, method and system as well as engineering machinery |
| CN103588116B (en) * | 2013-11-12 | 2015-11-18 | 湖南中联重科智能技术有限公司 | Hoisting crane caliberating device, method, system and construction machinery and equipment |
| CN103626056A (en) * | 2013-12-05 | 2014-03-12 | 徐州重型机械有限公司 | Amplitude control device and method for crane jib and crane |
| CN103626056B (en) * | 2013-12-05 | 2016-08-17 | 徐州重型机械有限公司 | Control device, method and the crane of a kind of crane arm luffing |
| CN104453238A (en) * | 2014-11-13 | 2015-03-25 | 恒天创丰重工有限公司 | Boom with controllable work region and work region calculation method of boom |
| CN104453238B (en) * | 2014-11-13 | 2016-08-24 | 恒天创丰重工有限公司 | The working region computational methods of the jib that a kind of working region is controlled |
| CN105314384A (en) * | 2015-11-30 | 2016-02-10 | 苏州康贝尔电子设备有限公司 | Turning machine |
| CN108002258A (en) * | 2017-12-04 | 2018-05-08 | 浙江三装备有限公司 | Turn round limitation system, revolution method for limiting and crane |
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Application publication date: 20120411 |