CN101704483A - Crane working condition recognition system, crane control system and crane - Google Patents
Crane working condition recognition system, crane control system and crane Download PDFInfo
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- CN101704483A CN101704483A CN200910225694A CN200910225694A CN101704483A CN 101704483 A CN101704483 A CN 101704483A CN 200910225694 A CN200910225694 A CN 200910225694A CN 200910225694 A CN200910225694 A CN 200910225694A CN 101704483 A CN101704483 A CN 101704483A
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- operating mode
- hoisting crane
- crane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
Abstract
The invention discloses a crane working condition recognition system, and also relates to a crane control system comprising the crane working condition recognition system and a crane. The crane working condition recognition system comprises a first detection device, a controller and an output device; the first detection device and the output device are respectively connected with the controller; the first detection device is used for detecting a working condition of a crane hoist braking system, and generates a first status signal representing a working condition of a main hoist braking subsystem; the controller determines the working condition of the crane according to the first status signal; and the output device outputs a preset signal according to the working condition of the crane determined by the controller. By utilizing the crane working condition recognition system, an operator can determine the working condition of the crane according to the preset signal so as to achieve the aim of automatically recognizing the working condition of the crane and improve the safety performance in lifting operation of the crane.
Description
Technical field
The present invention relates to a kind of hoisting crane control technology, particularly a kind of hoisting crane operating mode recognition system also relates to the crane control system and the hoisting crane that comprise above-mentioned hoisting crane operating mode recognition system.
Background technology
Hoisting crane is current application one of construction machinery and equipment very widely.At present, in order to adapt to the needs of several work, hoisting crane generally has the operating mode of plurality of optional, with according to actual job, selects suitable operating mode to carry out hoisting operation.
In order to adapt to the difference of lifting thing weight, take into account lifting speed simultaneously, hoisting crane generally includes main hook, auxiliary hook and elevator brake system; The elevator brake system comprises master winch braking subsystem and secondary elevator braking subsystem again; Master winch braking subsystem links to each other with main hook by lifting rope, and secondary elevator braking subsystem links to each other with auxiliary hook by lifting rope.Adapt with the structure of hoisting crane, the difference of used suspension hook when carrying out lifting operation, the crane loading operating mode comprises two kinds of operating modes, i.e. main hook operating mode and auxiliary hook operating mode.Under the main hook operating mode, master winch braking subsystem elevator moves main hook under the lifting rope effect, and under this operating mode, hoisting crane has bigger stringer rate, has more lifting rope to bear by the lifting article; Hoisting crane has the bigger lifting upper limit, can lift by crane heavier article; But because stringer rate is bigger, lifting speed is lower.Under the auxiliary hook operating mode, secondary elevator braking subsystem elevator moves auxiliary hook under the lifting rope effect, and hoisting crane has less stringer rate, and less lifting rope bears by the lifting article, and under this operating mode, hoisting crane has higher lifting speed; But because stringer rate is less, the upper limit of lifting lift heavy is less, can not lift by crane heavier article.When the bigger article of hoisting weight, can select the main hook operating mode, to avoid crane overload, guarantee the safety of hoisting crane and crane job; When the less article of hoisting weight, can select the auxiliary hook operating mode, to improve lifting speed, guarantee that hoisting crane has higher operating efficiency.
In addition, under the auxiliary hook operating mode, stringer rate is less, the lifting Item Weight is less, and the load that crane arm bears is less, has higher sling height in order to make hoisting crane, confiscate and utilize the load-carrying capacity of crane arm, existing hoisting crane also is provided with auxiliary, and promptly crane arm comprises principal arm and auxiliary, and auxiliary can be installed in the principal arm upper end, with when carrying out lifting operation, make auxiliary bear predetermined load, prolong the height of crane jib, and then increase the radius of hoisting operation.During according to lifting, the difference of the crane arm of use, the lifting operating mode of hoisting crane comprises principal arm operating mode and auxiliary operating mode again.Under the principal arm operating mode, principal arm bears the lifting Item Weight, because principal arm has bigger weight capacity, can heavier article be lifted by crane.Under auxiliary lifting operating mode, because auxiliary has predetermined length, thus can the also corresponding raising in auxiliary hook position, thus make hoisting crane have higher sling height and operating radius; Simultaneously, because auxiliary has long length, the weight of its carrying is less, therefore, under this operating mode, can not heavier goods be lifted by crane.
Above-mentioned main hook operating mode, auxiliary hook operating mode can combine with the principal arm operating mode respectively and form principal arm main hook operating mode and principal arm auxiliary hook operating mode, and the auxiliary hook operating mode can also combine with the auxiliary operating mode and form auxiliary auxiliary hook operating mode.Like this, hoisting crane has just had three kinds of lifting operating modes; When carrying out lifting operation, can be according to the needs of actual lifting operation, the operating mode of selecting to be fit to is carried out lifting operation.
Can provide multiple choices for lifting operation though hoisting crane has various working, take into account hoisting weight, sling height and lifting efficient; But the existence of plurality of optional operating mode also causes serious safety problem.
At first, when carrying out lifting operation, operating personal is at first determined the needed operating mode of hoisting crane, and compares with regard to the definite operating mode and the current working of hoisting crane, determines then whether current working can satisfy the lifting needs; When definite hoisting crane operating mode of living in, because error in judgement, or having the work carelessness, operating personal often can not correctly be judged; Thereby cause misjudgment, and be that lifting operation is carried out on the basis, cause hoisting crane under inappropriate operating mode, to carry out lifting operation, and then cause overload crane easily with the false judgment; Overload crane not only can cause damage to hoisting crane, shortens the service life of hoisting crane, also can influence the safety of hoisting operation, and severe patient also can cause safety misadventure.
Secondly, because the human element of operating personal as on the maximum lifting limit value of escaping the hoisting crane setting, simultaneously in order to improve lifting efficient, may tend to select higher auxiliary auxiliary hook operating mode of lifting speed or principal arm auxiliary hook operating mode to lift by crane; When the lifting article surpass maximum lifting limit value under this operating mode, cause the overload of hoisting crane, infringement hoisting crane performance overloads and also can cause safety misadventure when serious.
Summary of the invention
Therefore, first purpose of the present invention is, a kind of hoisting crane operating mode recognition system is provided, and with automatic identification hoisting crane operating mode, reduces owing to the misjudgment to operating mode causes hoisting crane impaired, and then improves the safety performance of crane loading operation.
Second purpose of the present invention is to provide a kind of crane control system, to reduce artificially to select the generation of improper situation, improves the safety performance of hoisting crane further.
The 3rd purpose of the present invention is to provide a kind of hoisting crane with above-mentioned hoisting crane operating mode recognition system or crane control system.
In order to realize above-mentioned first purpose, the invention provides a kind of hoisting crane operating mode recognition system, pairing hoisting crane comprises main hook, auxiliary hook and elevator brake system, described elevator brake system comprises master winch braking subsystem and secondary elevator braking subsystem, described master winch braking subsystem links to each other with main hook by lifting rope, described secondary elevator braking subsystem links to each other with auxiliary hook by lifting rope, and this hoisting crane operating mode recognition system comprises first detecting device, controller and output unit;
Described first detecting device is used to detect the mode of operation of elevator brake system, and produces first status signal that characterizes master winch braking subsystem work state;
Described controller is used for determining according to described first status signal operating mode of hoisting crane;
The hoisting crane operating mode output prearranged signals that described output unit is determined according to described controller.
Preferably, described first detecting device is used to detect the mode of operation of master winch braking subsystem;
Described hoisting crane operating mode recognition system also comprises second detecting device that links to each other with controller, and described second detecting device is used to detect the mode of operation of secondary elevator braking subsystem, and produces second status signal that characterizes secondary elevator braking subsystem work state; Described controller is determined the operating mode of hoisting crane according to described first status signal and described second status signal.
Optionally, described first detecting device and second detecting device are first pressure switch and second pressure switch; Described first pressure switch and second pressure switch are installed in the hydraulic-driven oil circuit and the described secondary elevator of described master winch braking subsystem respectively and brake on the hydraulic-driven oil circuit of subsystem, and export described first status signal and described second status signal according to the force value of hydraulic oil respectively.
Optionally, described first detecting device links to each other with the start-up circuit of described master winch braking subsystem and the start-up circuit of described secondary elevator braking subsystem respectively with second detecting device, and exports described first status signal and described second status signal according to the electric signal of start-up circuit respectively.
Preferably, the crane arm at described hoisting crane comprises principal arm and auxiliary; Under the auxiliary operating mode, described auxiliary inner end and principal arm arm head portion are fixedly the time, described hoisting crane operating mode recognition system also comprises the 3rd detecting device that links to each other with controller, described the 3rd detecting device is used to detect hoisting crane and whether is in the auxiliary operating mode, and produces the third state signal whether the sign hoisting crane is in the auxiliary operating mode; Described controller is determined the operating mode of hoisting crane according to described first status signal, second status signal and third state signal.
Optionally, described the 3rd detecting device comprise be used near switch and sensor block; Describedly be installed in principal arm arm head portion and auxiliary inner end respectively, or be installed in auxiliary inner end and principal arm arm head portion respectively, described first status signal that characterizes master winch braking subsystem work state that produces near switch near switch and sensor block.
Optionally, described the 3rd detecting device comprises the travel switch that is installed in principal arm arm head or auxiliary inner end, and described auxiliary inner end and principal arm arm head portion are fixed when separating, and described travel switch is in different states respectively.
Preferably, described controller comprises first judging unit, second judging unit and the 3rd judging unit; Described first judging unit is used for judging according to first status signal whether hoisting crane is in principal arm main hook operating mode, if for being then to characterize the signal of principal arm main hook operating mode to output unit output; If for not, then to second judging unit output indicator signal;
Described second judging unit is used for judging according to the indicator signal and second status signal of the output of first judging unit whether hoisting crane is in the auxiliary hook operating mode; If, then characterize and do not lift by crane the signal of operating mode to output unit output for not; If for being, then to the 3rd judging unit output indicator signal; Described the 3rd judging unit is used for judging according to the indicator signal of second judging unit and third state signal whether hoisting crane is in auxiliary auxiliary hook operating mode, if for being, then characterize the signal of auxiliary auxiliary hook operating mode to output unit output, if, then characterize the signal of principal arm auxiliary hook operating mode to output unit output for not.
In order to realize above-mentioned second purpose, crane control system provided by the invention comprises the lift heavy detecting device that is used to obtain the actual lift heavy of hoisting crane, safety detection device and above-mentioned any hoisting crane operating mode recognition system; Described safety detection device comprises setup unit, contrast unit and processing unit, and described setup unit is used for determining the specified lift heavy of operating mode according to the hoisting crane operating mode that controller is determined; Described contrast unit is used for the definite specified lift heavy of operating mode of actual lift heavy that described lift heavy detecting device is obtained and described setup unit and compares; Described processing unit is used for carrying out predetermined process according to the comparing result of described contrast unit.
In order to realize above-mentioned the 3rd purpose, hoisting crane provided by the invention comprises above-mentioned any hoisting crane operating mode recognition system, or above-mentioned crane control system.
Compared with prior art, hoisting crane operating mode recognition system provided by the invention comprises first detecting device, controller and output unit, first detecting device is used to detect the mode of operation of elevator brake system, and produces first status signal that characterizes master winch braking subsystem work state; Controller is used for determining according to first status signal operating mode of hoisting crane; Master winch braking subsystem is in the elevator state, and controller can determine that hoisting crane is in principal arm main hook operating mode, exports this operating mode to output unit then; Output unit can be determined the hoisting crane operating mode according to controller, the output prearranged signals.Adopt this technical scheme, operating personal just can be determined the residing operating mode of hoisting crane according to prearranged signals, thereby realizes the purpose of identification hoisting crane operating mode automatically; And then reduce, thereby improve the safety performance of crane loading operation because the hoisting crane that misjudgment causes to operating mode is impaired.
In further optimal technical scheme, first detecting device is used to detect the mode of operation of master winch braking subsystem, also comprise mode of operation second detecting device that is used to detect secondary elevator braking subsystem, second detecting device can also produce second status signal that characterizes secondary elevator braking subsystem work state.In this technical scheme, because the adding of second detecting device, controller can determine whether hoisting crane is in the lifting operating mode according to first status signal and second status signal, when first status signal and second status signal represent that master winch brake system and secondary elevator braking subsystem all are in not the elevator state, can determine that hoisting crane is in not lift by crane operating mode.Like this, this technical scheme not only can realize the automatic identification to the crane loading operating mode, can also realize not lifting by crane the automatic identification of operating mode.
In further optional technical scheme, described first detecting device and second detecting device are respectively first pressure switch and second pressure switch, described first pressure switch and second pressure switch are installed in the hydraulic-driven oil circuit and the secondary elevator of described master winch braking subsystem respectively and brake on the hydraulic-driven oil circuit of subsystem, first status signal and the second shape signal that first pressure switch, second pressure switch can be scheduled to according to the hydraulic fluid pressure generation of hydraulic-driven oil circuit respectively; Because hydraulic-driven oil circuit pressure is directly related with the state of master winch braking subsystem, therefore, controller can be determined the elevator state of master winch braking subsystem and secondary elevator braking subsystem according to first status signal and second status signal, thereby determine the operating mode of hoisting crane further. this technical scheme has simple in structure, easy for installation, lower-cost characteristics; And the detection performance of this technical scheme is very reliable, safeguards also very convenient.
In further optional technical scheme, brake the state that the electrical signal detection master winch of the start-up circuit of subsystem is braked subsystem and secondary elevator braking subsystem by detecting master winch.This technical scheme can obtain testing result quickly, improves the recognition efficiency of hoisting crane operating mode recognition system.
In further technical scheme, the crane arm of described hoisting crane comprises principal arm and auxiliary, and therefore, the crane loading operating mode also comprises principal arm main hook operating mode, principal arm auxiliary hook operating mode and three kinds of operating modes of auxiliary auxiliary hook operating mode.In order to distinguish above-mentioned three kinds of operating modes, hoisting crane operating mode recognition system also comprises the 3rd detecting device, and described the 3rd detecting device is used to detect hoisting crane and whether is in the auxiliary operating mode, and produces the third state signal whether the sign hoisting crane is in the auxiliary operating mode; Adapt therewith, controller is determined the residing operating mode of hoisting crane according to first status signal, second status signal and third state signal; When first status signal characterizes master winch braking subsystem and is in not the elevator state, just principal arm master structure operating mode can be got rid of; Just can determine according to second status signal whether hoisting crane is in again and not lift by crane operating mode; Again further,, just can determine that hoisting crane is to be in auxiliary auxiliary hook operating mode, still be in principal arm auxiliary hook operating mode, thereby realize hoisting crane three kinds of liftings operating mode and a kind of automatic identification of not lifting by crane operating mode according to third state signal.
In further optional technical scheme, the 3rd detecting device can be used near switch and sensor block, also can travel switch or limit switch, aforesaid way all has dependable performance, is convenient to safeguard and manufacturing, characteristics that maintenance cost is low.
In technical scheme further, described controller comprises a plurality of judging units, a plurality of judging units are judged first status signal, third state signal and second status signal respectively, and this technical scheme can guarantee the accuracy judged, thereby improve the reliability of hoisting crane operating mode recognition system.
In the crane control system provided by the invention, not only comprise above-mentioned any hoisting crane operating mode recognition system, also comprise the lift heavy detecting device that is used to obtain the actual lift heavy of hoisting crane and can further judge the whether safety detection device of safety of hoisting crane according to operating mode status recognition and actual lift heavy; Described safety detection device comprises setup unit, contrast unit and processing unit, the specified lift heavy of operating mode when described setup unit is used for determining to carry out hoisting operation according to the hoisting crane operating mode that controller is determined is to determine corresponding actual lift heavy limit value or to judge the benchmark of actual lift heavy limit value according to the difference of operating mode; The actual lift heavy that the contrast unit can obtain described lift heavy detecting device compares with the specified lift heavy of operating mode that setup unit is determined, to determine whether actual lift heavy is in the safe scope, reaches whether safety of hoisting operation; Processing unit can carry out predetermined process according to the comparing result of contrast unit, perhaps produce suitable alerting signal, to remind operating personal, processing unit is linked to each other with the hoisting crane general control system, under precarious position, to force to stop lifting operation, perhaps pass through other mode output safety testing results, or the like.The crane control system that this technical scheme provides not only can be discerned the operating mode of hoisting crane automatically, can also be according to the actual lift heavy of hoisting crane, judge the crane loading operational security, and can be when hoisting crane be in the hole, carry out predetermined process, thereby can lack the overload crane phenomenon, reduce the generation of safety misadventure.
Equally, comprise that the hoisting crane of above-mentioned hoisting crane operating mode recognition system and crane control system also has the corresponding techniques effect, realize above-mentioned corresponding purpose.
Description of drawings
Fig. 1 is in the prior art, and the part-structure figure of first kind of hoisting crane there is shown principal arm, main structure and auxiliary hook and position thereof relation;
Fig. 2 is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention one;
Fig. 3 is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention two;
Fig. 4 is the part-structure figure of second kind of hoisting crane, there is shown principal arm, main structure, auxiliary and auxiliary hook and position thereof relation;
Fig. 5 is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention three;
Fig. 6 is the working process diagram of circuit of hoisting crane operating mode recognition system;
Fig. 7 is the structured flowchart of a kind of crane control system provided by the invention.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Please refer to figure, Fig. 1 is in the prior art, and the part-structure figure of first kind of hoisting crane there is shown principal arm, main structure and auxiliary hook and position thereof relation.
Hoisting crane shown in Figure 1 comprises principal arm 10, main hook 20 and auxiliary hook 30; Principal arm 10 comprises the box telescopic boom of the mutual socket of more piece, has telescopic drive mechanism between the telescopic boom, produces relative motion with the driving in telescopic drive mechanism, and then realizes the flexible of principal arm 10, to adjust the sling height and the operating radius of hoisting crane.Corresponding with main hook 20 and auxiliary hook 30, the elevator brake system of hoisting crane also comprises master winch braking subsystem and secondary elevator braking subsystem (not shown), master winch braking subsystem links to each other with main hook 20 by lifting rope, makes main hook 20 hang on the arm head of principal arm 10; Secondary elevator braking subsystem links to each other with auxiliary hook 30 by lifting rope, makes auxiliary hook hang on principal arm 10 arm heads.Main hook 20 and auxiliary hook 30 have suitable hook housing and coupler body respectively, with when carrying out lifting operation, will be sling by the lifting thing.This hoisting crane has two kinds of lifting operating modes, during a kind of master winch braking subsystem elevator, carries out the principal arm main hook operating mode of lifting operation by main hook 20, when another kind is secondary elevator braking subsystem elevator, carries out the principal arm auxiliary hook operating mode of lifting operation by auxiliary hook 30.Corresponding above-mentioned first kind of hoisting crane below is described hoisting crane operating mode recognition system provided by the invention.
Please refer to Fig. 2, this figure is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention one.The hoisting crane operating mode recognition system that embodiment one provides comprises that first detecting device 110, controller 200 and output unit 300, the first detecting devices 110 link to each other with controller 200, and controller 200 links to each other with output unit 300 again.First detecting device 110 links to each other with master winch braking subsystem, is used to detect the mode of operation of master winch braking subsystem, and produces first status signal that characterizes master winch braking subsystem work state; Controller 200 is determined the operating mode of hoisting crane according to first status signal, the hoisting crane operating modes output prearranged signals that output unit 300 can be determined according to controller 200.
Because above-mentioned first kind of hoisting crane has two kinds of lifting operating modes, first detecting device 110 can produce corresponding first status signal according to the state that master winch is braked subsystem; Controller 200 just can be determined whether elevator of master winch braking subsystem according to first status signal, if master winch braking subsystem is in the elevator state, just can determine that this hoisting crane is in principal arm main hook operating mode; If master winch braking subsystem is in not elevator state, just can determine that this hoisting crane is in principal arm auxiliary hook operating mode; Thereby determine the lifting operating mode of hoisting crane easily; And then by output unit 300 with the hoisting crane operating mode output of determining. operating personal can be determined the operating mode of hoisting crane according to prearranged signals, realize the purpose of identification hoisting crane operating mode automatically, and then reduce because the operating mode misjudgment causes the impaired phenomenon of hoisting crane to produce, improve the safety performance of crane loading operation. in addition, be appreciated that, first detecting device 110 is not limited to determine the lifting operating mode of hoisting crane by detecting master winch braking subsystem, can only have under the situation of carrying out elevator in master winch brake system and secondary elevator brake system, first detecting device 110 also can be by detecting the mode of operation of secondary elevator braking subsystem, by determining the mode of operation of secondary elevator braking subsystem, determine the state of master winch braking subsystem, and then, controller 200 is determined the residing operating mode of hoisting crane according to first status signal that first detecting device 110 produces, and realizes above-mentioned purpose.
It will be appreciated by those skilled in the art that, for first kind of hoisting crane,, also there is the operating mode of non-lifting though the lifting operating mode comprises two kinds, in order to determine that further this hoisting crane is in the situation of non-lifting operating mode, the embodiment of the invention two also provides another kind of hoisting crane operating mode recognition system.
Please refer to Fig. 3, this figure is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention two.On the basis of the hoisting crane operating mode recognition system that embodiment one provides, the hoisting crane recognition system that embodiment two provides comprises that also being used to detect secondary elevator braking subsystem work state second detecting device 120, the second detecting devices 120 can also produce second status signal that characterizes master winch braking subsystem work state according to testing result; Simultaneously, second detecting device 120 links to each other with controller 200, second status signal that produces can be flowed to controller 200; This hoisting crane operating mode recognition system is applied to above-mentioned first kind of hoisting crane equally.
Among the embodiment two, because the adding of second detecting device 120, when first status signal and second status signal represent that master winch braking subsystem and secondary elevator braking subsystem all are in not the elevator state, can determine that hoisting crane is in not lift by crane operating mode; Thereby in this example, controller 200 can determine whether hoisting crane is in the lifting operating mode according to first status signal and second status signal, not only can realize the automatic identification to the crane loading operating mode, can also realize not lifting by crane the automatic identification of operating mode; Output unit 300 not only can be exported the signal that characterizes the lifting operating mode, can also export the signal that sign is not lifted by crane operating mode, and then for operating personal provides more fully information to the judgement of operating mode, thereby for finding that in time the problem that hoisting crane exists facilitates.
Above-mentioned first detecting device 110 and second detecting device 120 have multiple choices, and can select according to actual needs can be according to the change superior sensor of signal of elevator brake system state; Among the embodiment one, first detecting device 110 is first pressure switch, and first pressure switch is installed on the hydraulic-driven oil circuit of described master winch braking subsystem, and can produce the first predetermined status signal according to the hydraulic fluid pressure of hydraulic-driven oil circuit; Because hydraulic-driven oil circuit pressure is directly related with master winch braking subsystem elevator state, therefore, controller 200 can be determined the state of master winch braking subsystem according to first status signal, determines the operating mode of hoisting crane further.Have as the technical scheme of detecting device with pressure switch simple in structure, easy for installation, lower-cost characteristics; And it is very reliable that pressure switch detects performance, safeguards also very convenient.Equally, second detecting device 120 can be second pressure switch, and it is identical with the detection principle of first pressure switch that it detects principle.Be appreciated that, first detecting device 110 and second detecting device 120 also can be other detecting elements, such as, can be suitable voltage or current sensor, and the start-up circuit of this sensor and master winch braking subsystem and secondary elevator braking subsystem linked to each other, with according to signals such as the voltage of start-up circuit or electric currents, determine the state of start-up circuit, thereby realize status detection master winch braking subsystem and secondary elevator braking subsystem; Can obtain testing result quickly by detecting electric signal, and then improve the recognition efficiency of hoisting crane operating mode recognition system.
Describe as background technology, the hoisting crane of current hoisting crane also has auxiliary usually, and crane arm comprises principal arm and auxiliary; When needs improve sling height, when enlarging operating radius, can carry out lifting operation by auxiliary.
Please refer to Fig. 4, this figure is the part-structure figure of second kind of hoisting crane, there is shown principal arm, main structure, auxiliary and auxiliary hook and position thereof relation.This hoisting crane also comprises auxiliary 40 except the principal arm 10, main hook 20 and the auxiliary hook 30 that comprise first kind of hoisting crane.Auxiliary 40 can link to each other with principal arm 10 by detachable or folding structure; Under the principal arm operating mode, auxiliary 40 can be pulled down or be folding; Under the auxiliary operating mode, auxiliary 40 inner ends and principal arm 10 arm head portions are fixed, and auxiliary 40 is protruding; As shown in phantom in Figure 4, under the auxiliary operating mode, auxiliary hook 30 can hang on auxiliary 40 outer ends, thereby can increase the sling height and the operating radius of hoisting crane.Like this, above-mentioned second kind of crane loading operating mode just comprises principal arm main hook operating mode, principal arm auxiliary hook operating mode and auxiliary auxiliary hook operating mode.In order to distinguish above-mentioned three kinds of lifting operating modes and not lift by crane operating mode, the embodiment of the invention three provides another kind of hoisting crane operating mode recognition system.
Please refer to Fig. 5, this figure is the structured flowchart of the hoisting crane operating mode recognition system that provides of the embodiment of the invention three.On the basis of embodiment two, the hoisting crane operating mode recognition system that embodiment three provides also comprises the 3rd detecting device 130, the 3rd detecting device 130 is used to detect hoisting crane and whether is in the auxiliary operating mode, promptly detect auxiliary 40 inner ends and whether fix, and can produce the third state signal whether the sign hoisting crane is in the auxiliary operating mode according to testing result with principal arm 10 arm head portions.
The 3rd detecting device 130 can have multiple choices, such as: can be used near switch and sensor block, be installed in principal arm 10 arm head portions and auxiliary 40 inner ends respectively near switch and sensor block, or be installed in auxiliary 40 inner ends and principal arm 10 arm head portions respectively, in auxiliary 40 inner ends and principal arm 10 arm head portions fixedly the time, when promptly being in the auxiliary operating mode, sensor block enters in the induction zone near switch, produces cooresponding signal near switch; Auxiliary 40 inner ends and principal arm 10 arm heads part from the time, produce another kind of signal near switch, thereby the 3rd detecting device 130 can be realized auxiliary 40 status detection according to the position of auxiliary 40 controller 200 output third state signals in the same way not; The 3rd detecting device 130 also can travel switch or limit switch, travel switch or limit switch can be fixed on auxiliary 40 inner ends or principal arm 10 arm head portions fixedly the time, and can produce different signals according to the position of auxiliary 40, to characterize auxiliary 40 states, realization is to auxiliary 40 status detection, aforesaid way all has dependable performance, is convenient to safeguard and manufacturing, characteristics that maintenance cost is low.
Among the embodiment two, controller 200 can be determined the various working of hoisting crane according to first status signal, second status signal and third state signal.Basic judgement principle is: if master winch braking subsystem is in the elevator state, just can determine that hoisting crane is in principal arm main hook operating mode; Under the auxiliary operating mode, if master winch braking subsystem is in not elevator state, and secondary elevator braking subsystem is in the elevator state, can determine that then hoisting crane is in auxiliary auxiliary hook operating mode; Under the principal arm operating mode, if master winch braking subsystem is in not elevator state, and secondary elevator braking subsystem is in the elevator state, can determine that then hoisting crane is in principal arm auxiliary hook operating mode; If master winch braking subsystem and secondary elevator braking subsystem all are in not elevator state, can determine that hoisting crane is in not lift by crane operating mode.
In order to realize above-mentioned judgement purpose, as shown in Figure 5, in the present embodiment, controller 200 comprises first judging unit 210, second judging unit 220 and the 3rd judging unit 230.
Because first status signal can characterize the state of elevator brake system, thereby first judging unit 210 can judge whether hoisting crane is in principal arm main hook operating mode according to first status signal, if judged result is for being, then characterize the signal of principal arm main hook operating modes to output unit 300 outputs; If for not, owing under this state, exist and do not lift by crane operating mode, auxiliary auxiliary hook operating mode and three kinds of situations of principal arm auxiliary hook operating mode, therefore, be necessary further to judge, therefore, first judging unit 210 is to second judging unit, 220 output indicator signals.
Second judging unit 220 can judge whether hoisting crane is in the auxiliary hook operating mode according to the indicator signal and second status signal of 210 outputs of first judging unit. second judging unit 220 can determine according to second status signal whether secondary elevator braking subsystem is in the elevator state, and then can judge when whether hoisting crane is in the auxiliary hook operating mode; If for not, can determine that hoisting crane is in not lift by crane operating mode that second judging unit 220 can characterize to output unit 300 outputs and not lift by crane the signal of operating mode; If for being, owing under the auxiliary hook operating mode, further comprise principal arm auxiliary hook operating mode and auxiliary auxiliary hook operating mode, under this situation, be necessary further to judge the state of auxiliary 40, at this moment, second judging unit 220 can be to the 3rd judging unit 230 output indicator signals, further to judge.
The 3rd judging unit 230 judges according to the indicator signal of the third state signal and second judging unit 220 whether hoisting crane is in auxiliary auxiliary hook operating mode, if for being, can determine that then hoisting crane is in auxiliary auxiliary hook operating mode, the 3rd judging unit 230 characterizes the signal of auxiliary auxiliary hook operating mode to output unit 300 outputs, if for denying, can determine that then hoisting crane is in principal arm auxiliary hook operating mode, by the signal of the 3rd judging unit 230, realize automatic identification to the hoisting crane operating mode to output unit 300 output sign principal arm auxiliary hook operating modes.
Please refer to Fig. 6, this figure is the working process diagram of circuit of hoisting crane operating mode recognition system among the embodiment three:
After starting hoisting crane operating mode recognition system, beginning step S600, first detecting device 110, second detecting device 120 and the 3rd detecting device 130 detect, and will detect each judging unit that the signal output that obtains is given controller 200.
Step S601 judges whether hoisting crane is in principal arm main hook operating mode, and promptly first status signal that produces according to first detecting device 110 determines whether hoisting crane is in principal arm main hook operating mode; If, then export judged result, return next and judge cyclic process for being; If, then enter next step for not.
Step S602 judges whether hoisting crane is in the auxiliary hook operating mode, promptly judges according to the indicator signal and second status signal of 210 outputs of first judging unit; If, can determine that then hoisting crane is in and does not lift by crane operating mode, enter next and judge cyclic process step S601 for not; Then export judged result; If for being then to enter next step.
Step S603 judges whether hoisting crane is in the auxiliary operating mode, determines according to second judging unit 220 and third state signal whether hoisting crane is in the auxiliary operating mode; If for not, can determine that then hoisting crane is in principal arm auxiliary hook operating mode, if for being, can determine that then hoisting crane is in auxiliary auxiliary hook operating mode, and export judged result respectively; Enter next then and judge cyclic process step S601.
According to foregoing description, can determine, in embodiment two, also can adopt aforesaid way to determine the operating mode of hoisting crane, and, owing to the hoisting crane operating mode recognition system that embodiment two provides only need be determined principal arm main hook operating mode, principal arm auxiliary hook operating mode and not lift by crane operating mode, therefore, when adopting aforesaid way to judge, just can determine the purpose of hoisting crane operating mode by two steps; Correspondingly, the controller 200 of hoisting crane recognition system comprises that two judging units just can realize above-mentioned purpose.
Be appreciated that, controller 200 is not limited to adopt aforesaid way to judge, those skilled in the art can also adopt multiple mode to determine the hoisting crane operating mode according to the status signal of the generation of respective detection device according to foregoing description, below another kind of mode are described.
In controller 200, preset first parameter, second parameter and the 3rd parameter, and make first parameter, second parameter and the 3rd parameter corresponding with first status signal, second status signal and third state signal respectively; When discerning, controller 200 can give different values with the 3rd parameter for first parameter, second parameter according to first status signal, third state signal and third state signal, obtain first parameter, second parameter and the 3rd parameter sum again, according to three parameter sums, can determine the hoisting crane operating mode. the technical scheme of a concrete assignment of following explanation; Not during elevator, can make first parameter is 0 at master winch braking subsystem, and when master winch braking subsystem elevator, can make first parameter is 1; Not during elevator, can make second parameter is 0 at secondary elevator braking subsystem, and when secondary elevator braking subsystem elevator, can make second parameter is 2; Be not under the auxiliary operating mode, making the 3rd parameter is 0; Be under the auxiliary operating mode, can make the 3rd parameter is 3. like this, is 0 o'clock three parameter sums, can determine that hoisting crane is in not lift by crane operating mode; Three parameter sums are 1 o'clock, and hoisting crane just is in principal arm main hook operating mode; Three parameter sums are 2 o'clock, and hoisting crane just is in principal arm auxiliary hook operating mode; Three parameter sums are 5 o'clock, and hoisting crane just is in auxiliary auxiliary hook operating mode. same, determine that by setting numerical value the hoisting crane operating mode also can use in the technical scheme of embodiment two; When using in the hoisting crane operating mode recognition system in embodiment two, preset the purpose that two parameters just can realize determining the hoisting crane operating mode. in addition, those skilled in the art can also select other values according to foregoing description, can realize determining and discerning the purpose of hoisting crane operating mode equally.
On the basis that above-mentioned hoisting crane operating mode recognition system is provided, also provide a kind of crane control system.Please refer to Fig. 7, this figure is the structured flowchart of a kind of crane control system provided by the invention; This system not only comprises above-mentioned hoisting crane operating mode recognition system, also comprises the lift heavy detecting device 400 that is used to obtain the actual lift heavy of hoisting crane and is used to judge the whether safety detection device 500 of safety of hoisting operation.
Lift heavy detecting device 400 can be the disclosed technical scheme of prior art, to obtain the actual lift heavy of hoisting crane; As: Chinese patent literature CN101214903 and CN2920952 just disclose a kind of technical scheme of measuring the hoisting crane lift heavy respectively, promptly use the bearing force that suitable superior sensor passes through stressed definite supporting leg of measurement supporting leg respectively, deduct the weight of hoisting crane itself then, just can obtain actual lift heavy.
According to the description in the background technology, hoisting crane is under different operating modes, there is corresponding difference in its maximum hoisting weight, the corresponding difference that the weight limit value that it can lift by crane also exists, if can be according to the difference of operating mode, determine corresponding lifting higher limit, not only can give full play to the crane capacity of hoisting crane, can also guarantee the safety of lifting operation.
Contrasting unit 520 is used for the specified lift heavy of operating mode that the actual lift heavy and the setup unit 510 of 400 acquisitions of lift heavy detecting device are determined is compared, whether be in the safe scope with the weight of determining lifting, whether lifting operation safety, and the result of contrast can be sent to processing unit 530.
Because crane control system provided by the invention not only can be discerned the operating mode of hoisting crane automatically, can also be according to the actual lift heavy of hoisting crane, judge the safety of hoisting crane, be in dangerous or during precarious position at hoisting crane, the processing of being scheduled to, thereby can lack the overload crane phenomenon, and then reduce the generation of safety misadventure.
Based on above-mentioned hoisting crane operating mode recognition system and crane control system, the present invention also provides a kind of hoisting crane that comprises above-mentioned hoisting crane operating mode recognition system, the hoisting crane that perhaps comprises above-mentioned crane control system, because the technique effect that hoisting crane operating mode recognition system has, above-mentioned crane control system also has the corresponding techniques effect, and the hoisting crane that provides also has corresponding technique effect.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. hoisting crane operating mode recognition system, described hoisting crane comprises main hook (20), auxiliary hook (30) and elevator brake system, described elevator brake system comprises master winch braking subsystem and secondary elevator braking subsystem, described master winch braking subsystem links to each other with main hook (20) by lifting rope, described secondary elevator braking subsystem links to each other with auxiliary hook (30) by lifting rope, it is characterized in that this hoisting crane operating mode recognition system comprises first detecting device (110), controller (200) and output unit (300);
Described first detecting device (110) is used to detect the mode of operation of elevator brake system, and produces first status signal that characterizes master winch braking subsystem work state;
Described controller (200) is used for determining according to described first status signal operating mode of hoisting crane;
The hoisting crane operating mode output prearranged signals that described output unit (300) is determined according to described controller (200).
2. hoisting crane operating mode recognition system according to claim 1 is characterized in that,
Described first detecting device (110) is used to detect the mode of operation of master winch braking subsystem;
Also comprise second detecting device (120) that links to each other with controller (200), described second detecting device (120) is used to detect the mode of operation of secondary elevator braking subsystem, and produces second status signal that characterizes secondary elevator braking subsystem work state;
Described controller (200) is determined the operating mode of hoisting crane according to described first status signal and described second status signal.
3. hoisting crane operating mode recognition system according to claim 2 is characterized in that, described first detecting device (110) and second detecting device (120) are respectively first pressure switch and second pressure switch; Described first pressure switch and second pressure switch are installed in the hydraulic-driven oil circuit and the described secondary elevator of described master winch braking subsystem respectively and brake on the hydraulic-driven oil circuit of subsystem, and export described first status signal and described second status signal according to the force value of hydraulic oil respectively.
4. hoisting crane operating mode recognition system according to claim 2, it is characterized in that, described first detecting device (110) links to each other with the start-up circuit of described master winch braking subsystem and the start-up circuit of described secondary elevator braking subsystem respectively with second detecting device (120), and exports described first status signal and described second status signal according to the electric signal of start-up circuit respectively.
5. according to claim 2,3 or 4 described hoisting crane operating mode recognition systems, it is characterized in that the crane arm of described hoisting crane comprises principal arm (10) and auxiliary (40); Under the auxiliary operating mode, described auxiliary (40) inner end and principal arm (10) arm head portion are fixed;
This hoisting crane operating mode recognition system also comprises the 3rd detecting device (130) that links to each other with controller (200), described the 3rd detecting device (130) is used to detect hoisting crane and whether is in the auxiliary operating mode, and produces the third state signal whether the sign hoisting crane is in the auxiliary operating mode;
Described controller (200) is determined the operating mode of hoisting crane according to described first status signal, second status signal and third state signal.
6. hoisting crane operating mode recognition system according to claim 5 is characterized in that, described the 3rd detecting device (130) comprise be used near switch and sensor block; Describedly be installed in principal arm (10) arm head portion and auxiliary (40) inner end respectively near switch and sensor block, or being installed in auxiliary (40) inner end and principal arm (10) arm head portion respectively, the described generation near switch characterizes first status signal that master winch is braked the subsystem work state.
7. hoisting crane operating mode recognition system according to claim 5, it is characterized in that, described the 3rd detecting device (130) comprises the travel switch that is installed in principal arm (10) arm head or auxiliary (40) inner end, described auxiliary (40) inner end and principal arm (10) arm head portion are fixed when separating, and described travel switch is in different states respectively.
8. according to claim 5,6 or 7 described hoisting crane operating mode recognition systems, it is characterized in that described controller (200) comprises first judging unit (210), second judging unit (220) and the 3rd judging unit (230);
Described first judging unit (210) is used for judging according to first status signal whether hoisting crane is in principal arm main hook operating mode, if for being then to characterize the signal of principal arm main hook operating mode to output unit (300) output; If for not, then to second judging unit (220) output indicator signal;
Described second judging unit (220) is used for judging according to the indicator signal and second status signal of first judging unit (210) output whether hoisting crane is in the auxiliary hook operating mode; If, then characterize and do not lift by crane the signal of operating mode to output unit (300) output for not; If for being, then to the 3rd judging unit (230) output indicator signal;
Described the 3rd judging unit (230) is used for judging according to the indicator signal of second judging unit (220) and third state signal whether hoisting crane is in auxiliary auxiliary hook operating mode, if for being, then characterize the signal of auxiliary auxiliary hook operating mode to output unit (300) output, if, then characterize the signal of principal arm auxiliary hook operating mode to output unit (300) output for not.
9. a crane control system comprises the lift heavy detecting device (400) that is used to obtain the actual lift heavy of hoisting crane, it is characterized in that, also comprises each described hoisting crane operating mode recognition system of safety detection device (500) and claim 1-8;
Described safety detection device (500) comprises setup unit (510), contrast unit (520) and processing unit (530), and described setup unit (510) is used for determining the specified lift heavy of operating mode according to the hoisting crane operating mode that controller (200) is determined; Described contrast unit (520) is used for the definite specified lift heavy of operating mode of actual lift heavy that described lift heavy detecting device is obtained and described setup unit (510) and compares; Described processing unit (530) is used for carrying out predetermined process according to the comparing result of described contrast unit (520).
10. a hoisting crane is characterized in that, comprises each described hoisting crane operating mode recognition system of claim 1-8, or comprises the described crane control system of claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102256948A CN101704483B (en) | 2009-11-27 | 2009-11-27 | Crane working condition recognition system, crane control system and crane |
| PCT/CN2010/074236 WO2011063641A1 (en) | 2009-11-27 | 2010-06-22 | Crane working condition identifying system, crane control system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102256948A CN101704483B (en) | 2009-11-27 | 2009-11-27 | Crane working condition recognition system, crane control system and crane |
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| CN101704483B CN101704483B (en) | 2012-07-25 |
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| CN2009102256948A Expired - Fee Related CN101704483B (en) | 2009-11-27 | 2009-11-27 | Crane working condition recognition system, crane control system and crane |
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| WO (1) | WO2011063641A1 (en) |
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| WO2011063641A1 (en) | 2011-06-03 |
| CN101704483B (en) | 2012-07-25 |
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