CN102616685A - Vehicular voice alarming system and crane - Google Patents

Vehicular voice alarming system and crane Download PDF

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Publication number
CN102616685A
CN102616685A CN2012100974692A CN201210097469A CN102616685A CN 102616685 A CN102616685 A CN 102616685A CN 2012100974692 A CN2012100974692 A CN 2012100974692A CN 201210097469 A CN201210097469 A CN 201210097469A CN 102616685 A CN102616685 A CN 102616685A
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CN
China
Prior art keywords
voice
vehicle
hoisting crane
read
value
Prior art date
Application number
CN2012100974692A
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Chinese (zh)
Inventor
李晓乐
赵保丰
夏荣生
Original Assignee
三一汽车起重机械有限公司
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Priority to CN2012100974692A priority Critical patent/CN102616685A/en
Publication of CN102616685A publication Critical patent/CN102616685A/en

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Abstract

The invention provides a vehicular voice alarming system, which comprises an acquisition unit, a controller and a voice module. The acquisition unit is connected to the controller and acquires movement speed information and movement distance information of a weight; the controller is connected to the voice module, the movement speed information and the movement distance information are respectively compared with a preset movement speed reference value and a preset movement distance reference value, and when the movement speed information is larger than the preset movement speed reference value and/or the movement distance information is larger than the movement distance reference value, the controller transmits an alarming signal to the voice module; and when receiving the alarming signal, the voice module reminds in a voice manner. According to the technical scheme, the vehicular voice alarming system can warn possible dangerous actions or remind an operator if the operator operates irregularly or mistakenly in a voice manner, harm is avoided, and intelligence of a vehicle is improved. Correspondingly, the invention further provides a crane with the vehicular voice alarming system.

Description

Vehicle-mounted voice warning and hoisting crane
Technical field
The present invention relates to engineering machinery field, in particular to vehicle-mounted voice warning and hoisting crane.
Background technology
Along with the fast development of Chinese national economy, the speeding up the construction of various heavy constructions, various engineering trucks for example hoisting crane are widely used in various environment; The environment at its place also becomes increasingly complex; Environmental noise is very big, closely generally is difficult to catch in a minute, and commanding's commander does not more hear near the loading to hanging; And in hanging the process of carrying; Operator often can only be observed object at a distance, can not on read-out, watch present operating mode simultaneously, and this just might cause occurring dangerous play; And carelessness of some operator, cause the operating mode of actual condition and demarcation not conform to easily, and the data that cause whole crane system to calculate are different fully with actual conditions, finally cause overturning, folding arm phenomenon.
In related art scheme, even if some safety detection methods are arranged, still lack the voice prompting function that is fit to the complex work environment, and corresponding operating mode check and correction measure, it is minimum that danger is dropped to.For example a kind of method for safety monitoring is for being equipped with integrated with distance measurement sound and light alarm mechanism in the telescopic boom front portion of hoisting crane; On suspension hook, the swing type mechanism apomecometer is installed; Combined aural and visual alarm is installed respectively inside and outside operation room, in construction key point position the monitoring point is set, in the time of in hoisting crane key point position is in the alarm distance range; Monitoring equipment transmits signals to central process unit in the operator's compartment, on read-out, each key point position is shown that also voice prompt operation person notes ambient environmental conditions.This mode lays particular emphasis on the crane safety position Detection, can not detect the running velocity and the range ability of weight, the check and correction of can not starting shooting.
Therefore need a kind of new safety detection technology and alarm technique, can avoid above-mentioned defective.
Summary of the invention
Consider the above-mentioned background technology; A technical matters to be solved by this invention provides a kind of vehicle-mounted voice warning, can avoid the problem of the too fast or excessive height of operational process medium velocity, also can realize the start check and correction; In noisy environment, effectively remind, improve the intelligent of vehicle; Another technical matters to be solved by this invention provides the hoisting crane with this vehicle-mounted voice warning.
According to an aspect of the present invention, a kind of vehicle-mounted voice warning is provided, has comprised: collecting unit, controller and voice module, wherein, said collecting unit is connected to said controller, gathers the motion velocity information and the move distance information of weight; Said controller is connected to said voice module; Said motion velocity information and said move distance information are compared with kinematic velocity reference value that presets and move distance reference value respectively; When presetting kinematic velocity reference value and/or said move distance information, send alerting signal greater than said in said motion velocity information to said voice module greater than said move distance reference value; Said voice module carries out voice reminder when receiving said alerting signal.
In this technical scheme; Can gather the motion velocity information and the move distance information of weight, itself and reference value are compared, in case find not meet reference value; Then carry out voice reminder; Avoid excessive velocities or the excessive height that occurs in the operational process or cross the problem of putting,, also can make operating personal experience this danger through voice suggestion.
In technique scheme, preferably, said controller also is used for when presetting kinematic velocity reference value and/or said move distance information greater than said move distance reference value, sending alerting signal to said read out instrument greater than said in said motion velocity information; Said vehicle-mounted voice warning also comprises: read out instrument, be connected to said controller and said voice module, and when receiving said alerting signal, remind operating personal with figure, voice or dialog box form.
Promptly in operational process, when the speed of the action of operating surpasses fence coverage, can on read-out, remind the lang sound prompting of going forward side by side, and on read out instrument, can remind operating personal with various forms to operator's compartment.
In technique scheme; Preferably, said read out instrument can comprise: Tip element, unit and memory device are set, wherein; Said Tip element is used in the process that starts hoisting crane; Point out the duty parameter of current demonstration whether to meet the duty parameter that will move, under the affirmation of said operating personal, carry out the corresponding actions of said hoisting crane; The said unit that is provided with is used for when the duty parameter of said current demonstration does not meet the duty parameter that will move, and receives the duty parameter of user's input and transfer to said memory device to preserve.
In start process; Need the user to confirm whether the operating mode of current demonstration on the read out instrument meets the operating mode that will work; And which demarcation of prompting operation hand is an important parameter; Must be consistent with actual condition, do not meet the operating mode (promptly not meeting actual condition) that will work if find the operating mode of current demonstration, then the user can reset the relevant parameters item.If the user is not provided with or not affirmation; Then cannot carry out next step action, the action of limited subscriber prevents that the parameter of actual disposition and read-out demonstration is inconsistent; Prevent that error from appearring in subsequent calculations, can not draw correct result and effectively remind.
In technique scheme; Preferably; Said memory device also is used for the storage operation declarative data, and the form of said operation instructions data comprises video format and phonetic matrix, when receiving request of data; The read-out that the operation instructions data of video format is sent to said read out instrument shows, and the operation instructions data of phonetic matrix are sent to said voice module point out.
Preserve the operation instructions data in advance, the function of this car is made into video or voice, supply operator study.
In technique scheme, preferably, said memory device also is used for failure message and solution data are carried out corresponding stored; Said read out instrument can also comprise: search the unit; Find out the solution data that the failure message with the input of said operating personal is complementary and be shown to said operating personal, and the solution data that find out are sent to said voice module carry out voice suggestion.
With fault dictionary as the storehouse write-in program; The attendant can access built-in function at debug process or maintenance process and operate according to prompting, for example, and in operational process; Top, read-out master interface icon voice broadcast can occur in flicker; When troubleshooting, service engineer can be carried out fault inquiry through the mode of inquiry simultaneously, and can be in the enterprising lang sound prompting of the loud speaker of operator's compartment outside.
In technique scheme, preferably, can also comprise: talkback unit, be connected to said voice module, receive and to be positioned at the voice messaging that another outer talkback unit of hoisting crane sends, and said voice messaging is sent to said voice module plays.
Through talkback unit the operator that is positioned at operator's compartment and outdoor commanding are linked up; Because operator and the commanding content that the other side says of can not hear clearly in noisy working environment; Therefore; Commanding's sound is play through voice module, can be made operator catch the content that the commanding says, prevent maloperation.
In technique scheme, preferably, can also comprise: first loud speaker and second loud speaker, all be connected to said voice module, said first loud speaker is arranged at the operator's compartment of hoisting crane, and said second loud speaker is arranged at the outside of said hoisting crane.
Operator's compartment and hoisting crane outside at hoisting crane all are provided with loud speaker; Can make outdoor and indoor occupant all can notice the dangerous tip and the operation indicating of hoisting crane; Make hoisting crane can adapt to the complex operations environment, notice various danger, danger is reduced to minimum; Also can quick check be out of order and keep in repair, improve the intelligent of hoisting crane.
In technique scheme, preferably, said collecting unit is a coder.
In technique scheme, preferably, said coder is a plurality of, is installed on the master winch of said hoisting crane, secondary elevator and turntable respectively.Can a coder be installed respectively at master winch, secondary elevator and turntable, gather the speed of weight, data such as the rotating speed of turntable, thus whether the operating speed of judging hoisting crane operates fence coverage.
According to a further aspect in the invention, a kind of hoisting crane is provided also, has comprised the vehicle-mounted voice warning described in above-mentioned arbitrary technical scheme.
According to technical scheme of the present invention, can when start, remind operator that the parameter of actual condition and read-out demonstration is compared, when inequality, directly change, and carry out shielding processing producing dangerous action; Utilize coder to detect the speed of each action and the position of weight, carry out voice suggestion during when excessive velocities or near the state of alert of hoisting crane.
Can also most common failure and solution be made sound bank and deposit read out instrument (read-out) in, in debug process and maintenance process, can point out the attendant to carry out corresponding inspection and maintenance; And the operation instructions of this vehicle is made video have read-out, when operator is unfamiliar with this car, can video be accessed and learn; And increased intercommunication function, and sound is played back through loudspeaker, make vehicle in noisy working environment, also can notice contingent danger or corresponding prompting.Thereby can remind the operation lack of standardization of operator,,, shorten the troubleshooting cycle, further improve the intelligent of vehicle for the attendant provides the overhaul data storehouse for the operator of not operating this vehicle provides a kind of study and skilled platform.
Description of drawings
Fig. 1 shows the scheme drawing of vehicle-mounted voice warning according to an embodiment of the invention;
Fig. 2 shows the scheme drawing of vehicle-mounted voice warning according to still another embodiment of the invention.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
At first combine Fig. 1 to specify vehicle-mounted voice warning according to an embodiment of the invention.
Fig. 1 shows the scheme drawing of vehicle-mounted voice warning according to an embodiment of the invention.
As shown in Figure 1; Vehicle-mounted voice warning according to an embodiment of the invention; Comprise: collecting unit 102, controller 104 and voice module 106; Wherein, said collecting unit 102 is connected to said controller 104, gathers the motion velocity information and the move distance information of weight (for example hoisting crane hangs the weight that carries); Said controller 104 is connected to said voice module 106; Said motion velocity information and said move distance information are compared with kinematic velocity reference value that presets and move distance reference value respectively; When presetting kinematic velocity reference value and/or said move distance information, send alerting signal greater than said in said motion velocity information to said voice module greater than said move distance reference value; Said voice module 106 carries out voice reminder when receiving said alerting signal.
In this technical scheme; Can gather the motion velocity information and the move distance information of weight, itself and reference value are compared, in case find not meet reference value; Then carry out voice reminder; Avoid excessive velocities or the excessive height that occurs in the operational process or cross the problem of putting,, also can make operating personal experience this danger through voice suggestion.
In technique scheme; Preferably; Said controller 104 also is used for when presetting kinematic velocity reference value and/or said move distance information greater than said move distance reference value, sending alerting signal to said read out instrument greater than said in said motion velocity information; Said vehicle-mounted voice warning also comprises: read out instrument 108, be connected to said controller 104 and said voice module 106, and when receiving said alerting signal, remind operating personal with figure, voice or dialog box form.
Promptly in operational process, when the speed of the action of operating surpasses fence coverage, can on read-out, remind the lang sound prompting of going forward side by side, and on read out instrument, can remind operating personal with various forms to operator's compartment.
In technique scheme; Preferably, said read out instrument 108 can comprise: Tip element 1082, unit 1084 and memory device 1086 are set, wherein; Said Tip element 1082 is used in the process that starts hoisting crane; Point out the duty parameter of current demonstration whether to meet the duty parameter that will move, under the affirmation of said operating personal, carry out the corresponding actions of said hoisting crane; The said unit 1084 that is provided with is used for when the duty parameter of said current demonstration does not meet the duty parameter that will move, and receives the duty parameter of user's input and transfer to said memory device 1086 to preserve.
In start process; Need the user to confirm whether the operating mode of current demonstration on the read out instrument 108 meets the operating mode that will work; And which demarcation of prompting operation hand is an important parameter; Must be consistent with actual condition, do not meet the operating mode (promptly not meeting actual condition) that will work if find the operating mode of current demonstration, then the user can reset the relevant parameters item.If the user is not provided with or not affirmation; Then cannot carry out next step action, the action of limited subscriber prevents that the parameter of actual disposition and read-out demonstration is inconsistent; Prevent that error from appearring in subsequent calculations, can not draw correct result and effectively remind.
What need explanation is; The operating mode that read-out shows is meant the operating mode the when last time of read-out storage inside operates, and the operating mode that will work (actual condition) can be that example is explained with the hoisting crane, and how many multiplying powers the present main hook of hoisting crane is; Whether counterweight is arranged; Be the actual conditions of the hoisting crane seen of operator, these can be called the operating mode that will work, these maybe with last parameter value different (for example counterweight is different); Some operator can forget change is set, and might cause danger that crane system calculates with actual inconsistent like this; These operating modes of read-out storage are to be used for calculating the crane capacity that this hoisting crane this time moves, and all dangerous plays are all come out according to this condition calculating.
In technique scheme; Preferably; Said memory device 1086 also is used for the storage operation declarative data, and the form of said operation instructions data comprises video format and phonetic matrix, when receiving request of data; The read-out that the operation instructions data of video format is sent to said read out instrument 108 shows, and the operation instructions data of phonetic matrix are sent to said voice module 106 point out.
Preserve the operation instructions data in advance, the function of this car is made into video or voice, supply operator study, on the key icons on the interface, phonetic explaining is provided, when operator will point a little in position accordingly, cabinet speaker will be sounded.
In technique scheme, preferably, said memory device 1086 also is used for failure message and solution data are carried out corresponding stored; Said read out instrument 108 can also comprise: search unit 1088; Find out the solution data that the failure message with the input of said operating personal is complementary and be shown to said operating personal, and the solution data that find out are sent to said voice module 106 carry out voice suggestion.
With fault dictionary as the storehouse write-in program; The attendant can access built-in function at debug process or maintenance process and operate according to prompting, for example, and in operational process; Top, read-out master interface icon voice broadcast can occur in flicker; When troubleshooting, service engineer can be carried out fault inquiry through the mode of inquiry simultaneously, and can be in the enterprising lang sound prompting of the loud speaker of operator's compartment outside.
Further specify according to vehicle-mounted voice intelligence system of the present invention below in conjunction with Fig. 2; As shown in Figure 2; Vehicle-mounted voice intelligence system described in the foregoing description can also comprise: talkback unit 110; Be connected to said voice module 106, receive and to be positioned at the voice messaging that another outer talkback unit 112 of hoisting crane sends, and said voice messaging is sent to said voice module 106 plays.
Through talkback unit 110 operator that is positioned at operator's compartment and outdoor commanding are linked up; Because operator and the commanding content that the other side says of can not hear clearly in noisy working environment; Therefore; Commanding's sound is play through voice module 106, can be made operator catch the content that the commanding says, prevent maloperation.
In addition; Outdoor talkback unit is the same with common talkback unit basically; But the talkback unit at operation room is different, and operator need not intervened talkback unit with hand when speaking just can directly say (need not pin button, and common be need pin button just can speak).
Preferably, can also comprise: first loud speaker 1062 and second loud speaker 1064, all be connected to said voice module 106, said first loud speaker 1062 is arranged at the operator's compartment of said hoisting crane, and said second loud speaker 1064 is arranged at the outside of said hoisting crane.
Operator's compartment and hoisting crane outside at hoisting crane all are provided with loud speaker; Can make outdoor and indoor occupant all can notice the dangerous tip and the operation indicating of hoisting crane; Make hoisting crane can adapt to the complex operations environment, notice various danger, danger is reduced to minimum; Also can quick check be out of order and keep in repair, improve the intelligent of hoisting crane.
Preferably, the collecting unit shown in Fig. 1 102 is a coder.This coder can comprise master file coder 1022, secondary volume coder 1024 and rotary encoder 1026 for a plurality of, is installed on the master winch of said hoisting crane, secondary elevator and turntable respectively.Therefore, can a coder be installed respectively, gather the speed of weight at master winch, secondary elevator and turntable, data such as the rotating speed of turntable, voice suggestion is carried out in the speed of each action and the position of weight during when excessive velocities or near the state of alert of hoisting crane.
According to a further aspect in the invention, a kind of hoisting crane is provided also, has comprised the vehicle-mounted voice warning described in above-mentioned arbitrary technical scheme.
At this; Those skilled in the art should be appreciated that; This vehicle-mounted voice warning can be applied in the various engineering trucks, utilizes collecting unit to detect the speed and the position of other actions, when reaching fence coverage, points out; Also can increase corresponding troubleshooting methodology, utilize voice and the mode that demonstration combines to remind operating personal.
According to vehicle-mounted voice intelligence system of the present invention; Behind normal boot-strap; Can point out the operating mode setting of present read-out whether correct with the form of voice and dialog box on the display screen interface; Operator can be changed setting according to actual conditions, guarantees operating mode and actual condition consistent of read-out stored;
Crane utilizes the state of speed and the weight operation of each action of sensor in operational process, carry out phonetic warning, prompting operation hand during when excessive velocities or near the state of alert of hoisting crane;
Most common failure and solution are made sound bank deposit voice module in;, hoisting crane carries out voice suggestion when breaking down; For example in operational process, top, read-out master interface icon voice broadcast can occur in flicker, simultaneously when troubleshooting; Service engineer can be carried out fault inquiry through the mode of inquiry, and can be in the enterprising lang sound prompting of second loud speaker of operator's compartment outside;
On the key icons on the interface, phonetic explaining is provided, when operator will be pointed a little in corresponding position, indoor first loud speaker will be sounded;
The operation instructions of this vehicle is made video, supply unskilled operator study.
To sum up; According to technical scheme of the present invention, make vehicle in noisy working environment, also can notice contingent danger or corresponding prompting, thereby can remind the operation lack of standardization of operator; A kind of study and skilled platform can also be provided for the operator of not operating this vehicle; For the attendant provides the overhaul data storehouse, shorten the troubleshooting cycle, further improved the intelligent of vehicle.
In the present invention, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.Term " a plurality of " refers to two or more, only if clear and definite qualification is arranged in addition.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be captive joint, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a vehicle-mounted voice warning is characterized in that, comprising: collecting unit (102), controller (104) and voice module (106), wherein,
Said collecting unit (102) is connected to said controller (104), gathers the motion velocity information and the move distance information of weight;
Said controller (104) is connected to said voice module (106); Said motion velocity information and said move distance information are compared with kinematic velocity reference value that presets and move distance reference value respectively; When presetting kinematic velocity reference value and/or said move distance information, send alerting signal greater than said in said motion velocity information to said voice module (106) greater than said move distance reference value;
Said voice module (106) carries out voice reminder when receiving said alerting signal.
2. vehicle-mounted voice warning according to claim 1; It is characterized in that; Said controller (104) also is used for when presetting kinematic velocity reference value and/or said move distance information greater than said move distance reference value, sending alerting signal to said read out instrument (108) greater than said in said motion velocity information;
Said vehicle-mounted voice warning also comprises: read out instrument (108), be connected to said controller (104) and said voice module (106), and when receiving said alerting signal, remind operating personal with figure, voice or dialog box form.
3. vehicle-mounted voice warning according to claim 2; It is characterized in that said read out instrument (108) comprising: Tip element (1082), unit (1084) and memory device (1086) are set, wherein; Said Tip element (1082) is used in the process that starts hoisting crane; Point out the duty parameter of current demonstration whether to meet the duty parameter that will move, under the affirmation of said operating personal, carry out the corresponding actions of said hoisting crane;
The said unit (1084) that is provided with is used for when the duty parameter of said current demonstration does not meet the duty parameter that will move, and receives the duty parameter of user's input and transfer to said memory device (1086) to preserve.
4. vehicle-mounted voice warning according to claim 3; It is characterized in that; Said memory device (1086) also is used for the storage operation declarative data, and the form of said operation instructions data comprises video format and phonetic matrix, when receiving request of data; The read-out that the operation instructions data of video format is sent to said read out instrument (108) shows, and the operation instructions data of phonetic matrix are sent to said voice module (106) point out.
5. vehicle-mounted voice warning according to claim 3 is characterized in that, said memory device 1086 also is used for failure message and solution data are carried out corresponding stored;
Said read out instrument (108) also comprises: search unit (1088); Find out the solution data that the failure message with the input of said operating personal is complementary and be shown to said operating personal, and the solution data that find out are sent to said voice module (106) carry out voice suggestion.
6. vehicle-mounted voice warning according to claim 1; It is characterized in that; Also comprise: talkback unit (110); Be connected to said voice module (106), receive and to be positioned at the voice messaging that another outer talkback unit of hoisting crane sends, and said voice messaging is sent to said voice module (106) plays.
7. according to each described vehicle-mounted voice warning in the claim 1 to 6; It is characterized in that; Also comprise: first loud speaker (1062) and second loud speaker (1064); All be connected to said voice module (106), said first loud speaker (1062) is arranged at the operator's compartment of hoisting crane, and said second loud speaker (1064) is arranged at the outside of said hoisting crane.
8. according to each described vehicle-mounted voice warning in the claim 1 to 6, it is characterized in that said collecting unit (102) is a coder.
9. vehicle-mounted voice warning according to claim 8 is characterized in that, said coder is a plurality of, is installed on the master winch of said hoisting crane, secondary elevator and turntable respectively.
10. a hoisting crane is characterized in that, comprises like each described vehicle-mounted voice warning in the claim 1 to 9.
CN2012100974692A 2012-04-05 2012-04-05 Vehicular voice alarming system and crane CN102616685A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10218561A (en) * 1997-02-05 1998-08-18 Hitachi Constr Mach Co Ltd Craned-load moving speed control device and craned-load moving speed control method
JP2002128468A (en) * 2000-10-20 2002-05-09 Toshiba Eng Co Ltd Traveling speed controller for jib crane
DE10115312A1 (en) * 2001-03-28 2002-10-02 Man Wolffkran Controlling crane movements, involves limiting speed and/or acceleration of crane movement by maximum movement depending on deviation of load moment from maximum load moment
CN200951937Y (en) * 2006-09-15 2007-09-26 上海三一科技有限公司 Moment control device under super lifting working condition of caterpillar crane
CN201809063U (en) * 2009-11-03 2011-04-27 南通通镭软件有限公司 Locating device for container spreader of crane
CN102363509A (en) * 2011-11-01 2012-02-29 大连科信起重电器有限公司 Outer climbing protection device of tower crane
CN102398857A (en) * 2011-11-21 2012-04-04 江麓机电科技有限公司 Intelligent tower crane control system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10218561A (en) * 1997-02-05 1998-08-18 Hitachi Constr Mach Co Ltd Craned-load moving speed control device and craned-load moving speed control method
JP2002128468A (en) * 2000-10-20 2002-05-09 Toshiba Eng Co Ltd Traveling speed controller for jib crane
DE10115312A1 (en) * 2001-03-28 2002-10-02 Man Wolffkran Controlling crane movements, involves limiting speed and/or acceleration of crane movement by maximum movement depending on deviation of load moment from maximum load moment
CN200951937Y (en) * 2006-09-15 2007-09-26 上海三一科技有限公司 Moment control device under super lifting working condition of caterpillar crane
CN201809063U (en) * 2009-11-03 2011-04-27 南通通镭软件有限公司 Locating device for container spreader of crane
CN102363509A (en) * 2011-11-01 2012-02-29 大连科信起重电器有限公司 Outer climbing protection device of tower crane
CN102398857A (en) * 2011-11-21 2012-04-04 江麓机电科技有限公司 Intelligent tower crane control system

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