CN105502185A - Superlift pretension safety protection method and system - Google Patents

Superlift pretension safety protection method and system Download PDF

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Publication number
CN105502185A
CN105502185A CN201610071455.1A CN201610071455A CN105502185A CN 105502185 A CN105502185 A CN 105502185A CN 201610071455 A CN201610071455 A CN 201610071455A CN 105502185 A CN105502185 A CN 105502185A
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CN
China
Prior art keywords
pretension
surpassed
mode
hoisting crane
current working
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CN201610071455.1A
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Chinese (zh)
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CN105502185B (en
Inventor
胡江林
郑潜
石丽君
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三一汽车起重机械有限公司
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Priority to CN201610071455.1A priority Critical patent/CN105502185B/en
Publication of CN105502185A publication Critical patent/CN105502185A/en
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Publication of CN105502185B publication Critical patent/CN105502185B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/88Safety gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00Cranes
    • B66C2700/03Cranes with arms or jibs; Multiple cranes

Abstract

The invention discloses a superlift pretension safety protection method and system. According to the method and the system, after superlift pretension is started, current working condition parameters influencing superlift pretension are acquired in real time, and a condition whether the superlift pretension is effective or not is determined according to the current working condition parameters to determine a working mode of a crane. Through adoption of the method and the system, a condition that a superlift pretension operation is carried out when the superlift pretension of the crane is noneffective and does not play the effective effect is avoided, so that the overload operation risks of the crane are reduced to avoid safety accidents; potential security risks are avoided to a certain extent, so that the superlift pretension safety and reliability are improved.

Description

A kind of method for security protection and system having surpassed pretension
Technical field
The present invention relates to and control tool field, particularly a kind of method for security protection and system having surpassed pretension.
Background technology
Along with hoisting crane is to large-tonnage, large model future development, a lot of hoisting crane is equipped with super lifting device, to prevent hoisting crane large arm to be out of shape, and then improves the load-carrying properties of hoisting crane large arm, strengthen the overall lift heavy performance of hoisting crane.But super lifting device will be made to play useful effect, and real raising large arm lift heavy performance, must carry out successfully pretension to super lifting device, carry out protecting control to the reliability and security having surpassed pretension.If erroneous judgement or operation lack of standardization appear in operator, hoisting crane can be made to carry out super lifting working condition operation when having surpassed and not played useful effect, and this can increase the risk of hoisting crane overload operation, causes safety misadventure, causes casualties.Whether therefore, how to check and surpassed pretension and successfully start, playing useful effect, is technical matters urgently to be resolved hurrily at present.
Summary of the invention
In view of this, the present invention proposes the method for security protection and the system that have surpassed pretension, to solve the technical matters how checked and surpassed pretension and whether successfully started.
On the one hand, the invention provides a kind of method for security protection having surpassed pretension, comprise step:
What start hoisting crane has surpassed pretension;
Obtain the current working parameter that impact has surpassed pretension; Current working parameter, comprising: the current large arm angle of hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state;
According to current working parameter, whether effectively judge to have surpassed pretension;
According to result of determination, select the mode of operation of hoisting crane.
Further, described according to current working parameter, judge to have surpassed pretension whether actv. step, comprising:
The setting threshold scope that more each current working parameter is corresponding with it, judges all current working parameters whether all within the scope of the setting threshold of correspondence, if so, then judges to have surpassed pretension effective; If not, then judge to have surpassed pretension invalid.
Further, described according to result of determination, select the step of the mode of operation of hoisting crane, comprising:
When result of determination is effective, selects the mode of operation of hoisting crane, having surpassed pretension mode of operation for having;
When result of determination is invalid, judge whether to receive operating order, and according to operating order, select the mode of operation of hoisting crane.
Further, described in judge whether to receive operating order, and according to operating order, select the step of the mode of operation of hoisting crane, comprising:
When not receiving operating order, select the mode of operation of hoisting crane, for nothing has surpassed pretension mode of operation;
Receiving operating order, and when operating order is adjustment instruction, selecting the mode of operation of hoisting crane, is adjustment modes, and returns the step obtaining impact and surpassed the current working parameter of pretension;
Or/and, receiving operating order, and when operating order is imperative instruction, selecting the mode of operation of hoisting crane, is danger early warning mode of operation.
Further, described method for security protection, also comprises step: at the mode of operation of hoisting crane, during for danger early warning mode of operation, sends alerting signal.
On the other hand, the present invention also provides a kind of safety system having surpassed pretension, comprising: acquisition device and control setup;
Control setup, has surpassed pretension for what start hoisting crane;
Acquisition device, is connected with control setup, has surpassed the current working parameter of pretension, and be sent to control setup for obtaining impact; Current working parameter, comprising: the current large arm angle of hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state;
Control setup, also comprises:
Whether effective determination module, for according to current working parameter, judge to have surpassed pretension;
Select module, be connected with determination module, for according to result of determination, select the mode of operation of hoisting crane.
Further, described determination module, comprising:
Acquiring unit, for obtaining setting threshold scope corresponding to each current working parameter;
Comparing unit, is connected with acquisition device and acquiring unit, for the setting threshold scope that more each current working parameter is corresponding with it, judges all current working parameters whether all within the scope of the setting threshold of correspondence, if so, then judges to have surpassed pretension effective; If not, then judge to have surpassed pretension invalid.
Further, described selection module, comprising:
Input block, for entering the operating instructions;
Selection unit, is connected with comparing unit and input block, during for being effective in result of determination, selecting the mode of operation of hoisting crane, having surpassed pretension mode of operation for having; When result of determination is invalid, judge whether to receive operating order, and according to operating order, select the mode of operation of hoisting crane.
Further, described selection unit, also for when not receiving operating order, selects the mode of operation of hoisting crane, for nothing has surpassed pretension mode of operation;
Receiving operating order, and when operating order is adjustment instruction, selecting the mode of operation of hoisting crane, is adjustment modes;
Or/and, receiving operating order, and when operating order is imperative instruction, selecting the mode of operation of hoisting crane, is danger early warning mode of operation.
Further, described safety system, also comprises warning device, is connected with selection unit, for the mode of operation at hoisting crane, during for danger early warning mode of operation, sends alerting signal.
Method for security protection and the system having surpassed pretension provided by the invention, after starting having surpassed pretension, Real-time Obtaining impact has surpassed the current working parameter of pretension, and whether effective, to determine the mode of operation of hoisting crane if having surpassed pretension according to current working parameter decision.The method and system, can avoid because operating lack of standardization, maloperation etc. make hoisting crane when surpassed pretension invalid, do not play useful effect carry out super lifting working condition operation, thus reduce the risk of hoisting crane overload operation, avoid causing safety misadventure; And then potential security risk can be evaded to a certain extent, improve the safety and reliability having surpassed pretension.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the hoisting crane possessing super lifting device in correlation technique;
Fig. 2 is the local structure schematic diagram of the hoisting crane possessing super lifting device in correlation technique;
Fig. 3 is the local structure schematic diagram of the hoisting crane possessing super lifting device in correlation technique;
Fig. 4 is the diagram of circuit that the present invention has surpassed an embodiment of the method for security protection of pretension;
Fig. 5 is the diagram of circuit that the present invention has surpassed another embodiment of the method for security protection of pretension;
Fig. 6 is the schematic diagram that the present invention has surpassed an embodiment of the operation interface of the method for security protection of pretension;
Fig. 7 is the constructional drawing that the present invention has surpassed an embodiment of the safety system of pretension;
Fig. 8 is the constructional drawing that the present invention has surpassed an embodiment of the control setup of the safety system of pretension;
Fig. 9 is the constructional drawing that the present invention has surpassed another embodiment of the control setup of the safety system of pretension.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
For describing technological thought of the present invention in detail, be described in detail for the hoisting crane shown in Fig. 1-3.Concrete, this hoisting crane, comprise large arm 10, left surpass mast 20, the right conventional structure assembly surpass hoisting crane in mast 30, in advance locking oil cylinder 40, pretension elevator 50, pretension elevator lockable mechanism 60 and prior art, as assembly of walking, lift by crane assembly, control assembly etc.As shown in Figure 2,3, drive pretension elevator 50 to rotate by pre-locking oil cylinder 40, adjust left mast 20 and the right side of surpass to drive steel rope and surpassed the position of mast 30, angle and tightening force, the load-carrying, safety performance etc. of further raising hoisting crane.Invention aim of the present invention is, provide a kind of judge this surpassed pretension whether actv. surpassed the method for security protection of pretension, as shown in Figure 4, in one embodiment, this method for security protection, comprises step:
S100: what start hoisting crane has surpassed pretension.Concrete, for the hoisting crane of such as Fig. 1-3 example, the large arm 10 of hoisting crane can first be stretched to the work condition state having surpassed pretension by operating personal, then by super lifting device, namely leftly surpassed mast 20 and the right side has surpassed mast 30, be deployed into the angle of regulation, made to have surpassed with a left side mast 20 and the right side and surpassed the steel rope that mast 30 is connected and realize initial pullup, and pin super lift winch 50 by super lift winch lockable mechanism 60, then started by pre-locking oil cylinder 40 and surpassed pretension.
S200: after this has surpassed pretension startup, Real-time Obtaining impact has surpassed the current working parameter of pretension.Preferably, this current duty parameter, optional but be not limited only to: the current large arm angle of hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state.Concrete, by each position installation and measuring sensor at hoisting crane, obtain above-mentioned current working parameter, and by wired or wireless modes such as WIFI, bluetooth, buses, transfer to upper computer etc.More specifically, can at the tail hinge of the fundamental segment of large arm 10, setting angle sensor, to obtain the current large arm angle of hoisting crane when pretension starts; At the head of the minor details arm of large arm 10, mounted angle sensor, to obtain large arm amount of deflection or the reflex action angle of hoisting crane when pretension starts; Surpass mast 20 on a left side, right surpass on mast 30, installation expanded angle sensor respectively, surpass expanded angle with the acquisition hoisting crane when pretension starts; Having surpassed with a left side steel rope that mast 20 is connected and having surpassed the joint of the steel rope that mast 30 is connected with the right side, respectively pull sensing device is installed, with the predetermincd tension of the acquisition hoisting crane when pretension starts, and then has obtained monolateral predetermincd tension deviation and bilateral predetermincd tension summation; At super lift winch lockable mechanism 60 place of super lift winch ratchet, installation site detecting sensor, with when pretension starts, whether locking puts in place to detect super lift winch lockable mechanism 60.Noticeable, above-mentioned current working parameter and its obtain manner, be only preferred embodiment, and operating personal can according to the drive ability of hoisting crane, obtain the duty parameter that other impact has surpassed pretension, also monitor those duty parameters by alternate manner of the prior art.
Whether effective S300: according to current working parameter, judge to have surpassed pretension.Preferably, as shown in Figure 5, this step S300, can comprise: S310: the setting threshold scope that more each current working parameter is corresponding with it, judges all current working parameters whether all within the scope of the setting threshold of its correspondence; S320: if so, then judge to have surpassed pretension effective; S330: if not, then judge to have surpassed pretension invalid.By this judgment mode, only has selected each current working parameter, when all meeting system requirements, could judge to have surpassed pretension effective, otherwise, as long as there is a current working parameter, when cannot meet system requirements, then judge to have surpassed pretension without exception invalid, the validity of pretension can have been surpassed by synthetic determination on the whole, improve the accuracy of availability deciding to a certain extent, thus improve the safety performance of hoisting crane complete machine.Concrete, the setting threshold scope corresponding to each current working parameter, can prestore in memory with for subsequent use according to the type of current hoisting crane, model, load-carrying capacity, current operating environment etc., or be determined in real time by operating personal.Preferably, be consider metrical error, during pretension large arm Angle ambiguity setting value ± 0.5 ° within the scope of; Mast expanded angle during pretension, namely surpassed expanded angle control setting value ± 0.5 ° within the scope of; The predetermincd tension of steel rope controls in the scope of default (i.e. left and right sum/setting sum > setting value), and the pulling force difference of left and right to control in the scope of default (namely | monolateral predetermincd tension-setting predetermincd tension | < setting value).
S400: according to result of determination, selects the mode of operation of hoisting crane.Preferably, as shown in Figure 5, this step S400, comprising:
S410: when the result of determination having surpassed pretension is effective, selecting the mode of operation of hoisting crane, having surpassed pretension mode of operation for having.Concrete, the result of determination having surpassed pretension is effective, illustrate in this hoisting crane, impact has surpassed every current working parameter of pretension, all reach setting index, can carry out having surpassed pretension operation normally, the lifting performance under having surpassed function and having surpassed Pre strained state can be ensured, can avoid because operating lack of standardization, maloperation etc. make hoisting crane when surpassed pretension invalid, do not play useful effect carry out super lifting working condition operation, thus reduce the risk of hoisting crane overload operation, avoid causing safety misadventure; And then potential security risk can be evaded to a certain extent, improve the safety and reliability having surpassed pretension.
S420: when the result of determination having surpassed pretension is invalid, judge whether to receive operating order, and according to operating order, select the mode of operation of hoisting crane.Concrete, as shown in Figure 6, when the result of determination having surpassed pretension is invalid, by ejection operation interface or voice signal, with teaching process personnel, and for operating personal reference, next step operation instruction of decision-making.More specifically, operating personal, by operation interface, as keyboard, mouse, touch-screen etc., enters the operating instructions, with the mode of operation of decision-making hoisting crane.Preferably, this step S420, comprising:
S421: when not receiving operating order, selects the mode of operation of hoisting crane, for nothing has surpassed pretension mode of operation.Concrete, operating personal on the operation interface ejected, can directly select the mode of operation of hoisting crane, for nothing has surpassed pretension mode of operation; Or directly cancel the control inerface ejected, select the mode of operation of hoisting crane with default form, for nothing has surpassed pretension mode of operation.Now, hoisting crane is as not having to be equipped with the hoisting crane having surpassed pre-tightening apparatus, its load-carrying capacity, running environment etc. all can not consider that it is equipped with the performance having surpassed pre-tightening apparatus, operating personal can be avoided to be considered as by this hoisting crane successfully starting the hoisting crane having surpassed pretension, and increase its load-carrying capacity etc., evade potential security risk, improve the safety performance of hoisting crane entirety.
S422: receiving operating order, and when operating order is adjustment instruction, the mode of operation selecting hoisting crane is adjustment modes, and returns step S200.Preferably, operating personal on the operation interface ejected, directly can select adjustment modes.More preferred, operation interface, by the current working parameter within the scope of setting threshold, can point out with Green Marker; By the current working parameter not within the scope of setting threshold, point out with red-label.Operating personal, can point out according to the mark of this different colours, understand the particular case of current working parameter, by clicking the current working parameter of adjustment red-label prompting, the current working parameter pointed out by all red-labels, constantly adjusts, repeatedly detects, until all duty parameter is Green Marker prompting, make to have surpassed pretension and meet working condition requirement, reach the condition for validity having surpassed pretension.
Or/and, S423: receiving operating order, and when operating order is imperative instruction, selecting the mode of operation of hoisting crane, is danger early warning mode of operation.Preferably, operating personal on the operation interface ejected, directly can select danger early warning mode of operation.Now, although hoisting crane surpassed pretension be judged to be invalid, operating personal is according to checking field working conditions, and the Empirical rules to hoisting crane performance, take forced service measure, the mode of operation of hoisting crane is considered as successfully start the state having surpassed pretension.This mode of operation, can avoid because mistake etc. appears in detecting sensor error or judgment means, the situations such as Pre strained state misjudgment that surpassed caused occur, also can take into account the experience of operating personal, avoid relying on control system completely.More preferred, operating personal by input dynamic password, to start this danger early warning mode of operation.More preferred, when this danger early warning mode of operation starts, start warning simultaneously, send alerting signal, to give operating personal cue.
On the other hand, as shown in Figure 7, the present invention also provides a kind of safety system having surpassed pretension, comprising: acquisition device 100 and control setup 200.Wherein, control setup 200, has surpassed pretension for what start hoisting crane.Acquisition device 100, is connected with control setup 200, has surpassed the current working parameter of pretension, and be sent to control setup 200 for obtaining impact.Preferably, current working parameter, comprising: the current large arm angle of hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state.More preferred, control setup 100, optional but be not limited only to all-in-one or the terminating machines such as CPU, micro controller system, programmable logic device (PLD), can according to the operation instruction of preset program or operating personal, send to control signal to and surpassed oil cylinder 40, start and surpassed pretension.Acquisition device 100, can be the sensor that on hoisting crane, position is arranged, because this safety system is corresponding with above-mentioned method for security protection, its specific constructive form and setting position, do not repeat them here.
Preferably, as shown in Figure 8, control setup 200, also comprises:
Whether effective determination module 210, for according to current working parameter, judge to have surpassed pretension.
With selection module 220, be connected with determination module 210, for according to result of determination, select the mode of operation of hoisting crane.
More preferred, determination module 210, comprising:
Acquiring unit 211, for obtaining setting threshold scope corresponding to each current working parameter.Concrete, this acquiring unit 211, can be the input equipments such as keyboard, mouse, touch-screen, by the type, working environment etc. of operating personal according to hoisting crane, real-time setting threshold scope, also can be the storage equipments such as RAM, ROM, prestores the setting threshold scope of all types of hoisting crane with for subsequent use.
Comparing unit 212, be connected with acquisition device 100 and acquiring unit 211, for the setting threshold scope that more each current working parameter is corresponding with it, judge all current working parameters whether all within the scope of the setting threshold of correspondence, if so, then judge to have surpassed pretension effective; If not, then judge to have surpassed pretension invalid.
More preferred, as shown in Figure 9, select module 220, comprising:
Input block 221, for entering the operating instructions.Concrete, this input block 221, can be the input equipments such as keyboard, mouse, touch-screen.
Selection unit 222, is connected with comparing unit 212 and input block 221, during for being effective in result of determination, selecting the mode of operation of hoisting crane, having surpassed pretension mode of operation for having; And when result of determination is invalid, judge whether to receive operating order, and according to operating order, select the mode of operation of hoisting crane.More preferred, selection unit 222, also for when not receiving operating order, selects the mode of operation of hoisting crane, for nothing has surpassed pretension mode of operation.Receiving operating order, and when operating order is adjustment instruction, selecting the mode of operation of hoisting crane, is adjustment modes.Receiving operating order, and when operating order is imperative instruction, selecting the mode of operation of hoisting crane, is danger early warning mode of operation.
More preferred, for improving the safety of danger early warning mode of operation, this safety system, also comprises warning device 300, is connected with selection unit 222, for the mode of operation at hoisting crane, during for danger early warning mode of operation, sends alerting signal.
The above-mentioned safety system having surpassed pretension, corresponding with the above-mentioned method for security protection having surpassed pretension, combination and the technique effect of its technical characteristic do not repeat them here.The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. surpass a method for security protection for pretension, it is characterized in that, comprise step:
What start hoisting crane has surpassed pretension;
Obtain the described current working parameter having surpassed pretension of impact; Described current working parameter, comprising: the current large arm angle of described hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state;
According to described current working parameter, judge that whether described to have surpassed pretension effective;
According to result of determination, select the mode of operation of described hoisting crane.
2. the method for security protection having surpassed pretension according to claim 1, is characterized in that, described according to described current working parameter, judges describedly to have surpassed pretension whether actv. step, comprising:
The setting threshold scope that more each described current working parameter is corresponding with it, judges all described current working parameters whether all within the scope of the setting threshold of described correspondence, if so, then judges that described to have surpassed pretension effective; If not, then judge that described to have surpassed pretension invalid.
3. the method for security protection having surpassed pretension according to claim 2, is characterized in that, described according to described result of determination, selects the step of the mode of operation of described hoisting crane, comprising:
When described result of determination is effective, selecting the mode of operation of described hoisting crane, having surpassed pretension mode of operation for having;
When described result of determination is invalid, judge whether to receive operating order, and according to described operating order, select the mode of operation of described hoisting crane.
4. the method for security protection having surpassed pretension according to claim 3, is characterized in that, described in judge whether to receive operating order, and according to described operating order, select the step of the mode of operation of described hoisting crane, comprising:
When not receiving described operating order, select the mode of operation of described hoisting crane, for nothing has surpassed pretension mode of operation;
Receiving described operating order, and when described operating order is adjustment instruction, selecting the mode of operation of described hoisting crane, is adjustment modes, and returns the described step having surpassed the current working parameter of pretension of described acquisition impact;
Or/and receiving described operating order, and when described operating order is imperative instruction, selecting the mode of operation of described hoisting crane, is danger early warning mode of operation.
5. the method for security protection having surpassed pretension according to claim 4, is characterized in that, also comprise step: at the mode of operation of described hoisting crane, during for danger early warning mode of operation, sends alerting signal.
6. surpassed a safety system for pretension, it is characterized in that, having comprised: acquisition device (100) and control setup (200);
Described control setup (200), has surpassed pretension for what start hoisting crane;
Described acquisition device (100), is connected with described control setup (200), for obtaining the described current working parameter having surpassed pretension of impact, and is sent to described control setup (200); Described current working parameter, comprising: the current large arm angle of described hoisting crane, large arm amount of deflection, large arm reflex action angle, any one or more parameters surpassed in expanded angle, monolateral predetermincd tension deviation, bilateral predetermincd tension summation, elevator lockup state;
Described control setup (200), also comprises:
Determination module (210), for according to described current working parameter, judges that whether described to have surpassed pretension effective;
Select module (220), be connected with described determination module (210), for according to result of determination, select the mode of operation of described hoisting crane.
7. the safety system having surpassed pretension according to claim 6, is characterized in that, described determination module (210), comprising:
Acquiring unit (211), for obtaining setting threshold scope corresponding to each described current working parameter;
Comparing unit (212), be connected with described acquisition device (100) and described acquiring unit (211), for the setting threshold scope that more each described current working parameter is corresponding with it, judge all described current working parameters whether all within the scope of the setting threshold of described correspondence, if so, then judge that described to have surpassed pretension effective; If not, then judge that described to have surpassed pretension invalid.
8. the method for security protection having surpassed pretension according to claim 7, is characterized in that, described selection module (220), comprising:
Input block (221), for entering the operating instructions;
Selection unit (222), is connected with described comparing unit (212) and described input block (221), during for being effective in described result of determination, selects the mode of operation of described hoisting crane, has surpassed pretension mode of operation for having; When described result of determination is invalid, judge whether to receive operating order, and according to described operating order, select the mode of operation of described hoisting crane.
9. the safety system having surpassed pretension according to claim 8, it is characterized in that, described selection unit (222), also for when not receiving described operating order, select the mode of operation of described hoisting crane, for nothing has surpassed pretension mode of operation;
Receiving described operating order, and when described operating order is adjustment instruction, selecting the mode of operation of described hoisting crane, is adjustment modes;
Or/and receiving described operating order, and when described operating order is imperative instruction, selecting the mode of operation of described hoisting crane, is danger early warning mode of operation.
10. the safety system having surpassed pretension according to claim 9; it is characterized in that; also comprise warning device (300); be connected with described selection unit (222); for the mode of operation at described hoisting crane; during for danger early warning mode of operation, send alerting signal.
CN201610071455.1A 2016-02-01 2016-02-01 A kind of method for security protection and system of setting-up preload CN105502185B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106115516A (en) * 2016-08-31 2016-11-16 太原重型机械集团工程技术研发有限公司 Crane, super lifting device and pretension steel wire rope control method thereof and system
CN111704053A (en) * 2020-07-23 2020-09-25 大连理工大学 Super-lift cable pre-tightening method for all-terrain crane

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102887455B (en) * 2012-09-26 2014-12-10 三一重工股份有限公司 Method, device and system for controlling pre-tightening force of super lift device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106115516A (en) * 2016-08-31 2016-11-16 太原重型机械集团工程技术研发有限公司 Crane, super lifting device and pretension steel wire rope control method thereof and system
CN106115516B (en) * 2016-08-31 2018-01-12 太原重型机械集团工程技术研发有限公司 Crane, super lifting device and its pretension steel wire rope control method and system
CN111704053A (en) * 2020-07-23 2020-09-25 大连理工大学 Super-lift cable pre-tightening method for all-terrain crane

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