CN104528558A - Device and method used for preventing collision of tower crane lifting hook with top - Google Patents
Device and method used for preventing collision of tower crane lifting hook with top Download PDFInfo
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- CN104528558A CN104528558A CN201410673932.2A CN201410673932A CN104528558A CN 104528558 A CN104528558 A CN 104528558A CN 201410673932 A CN201410673932 A CN 201410673932A CN 104528558 A CN104528558 A CN 104528558A
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- tower crane
- suspension hook
- rushed
- summit
- rotary encoder
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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
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
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- Mechanical Engineering (AREA)
- Programmable Controllers (AREA)
Abstract
The invention provides a device and a method used for preventing collision of a tower crane lifting hook with the corresponding top. The device comprises a rotary encoder and a programmable logic controller; moving conditions of a traction reel of a tower crane are obtained via the rotary encoder, and conditions of the tower crane are obtained further; the moving conditions are send to the programmable logic controller via pulse signals; the programmable logic controller is used for realizing real-time calculation of position conditions and moving conditions of the lifting hook of the tower crane based on the pulse signals; a plurality of moving control units of the tower crane are controlled according to the position conditions and moving conditions of the lifting hook so as to adjust position and moving of the lifting hook; in-time alarming on abnormal conditions such as fault and overweight of the moving control units is performed; operators are informed to emit failure as quickly as possible; and normal and safe running of the tower crane is ensured.
Description
Technical field
The application relates to mechanical manufacturing field, particularly relates to the anti-suspension hook of tower crane and to rush to summit device and method.
Background technology
Tower crane (also known as tower crane) is that modern industry produces indispensable equipment, be widely used in the lifting of various material, transport, handling, installation and etc. in operation.Tower crane belongs to the machine of aerial work, its state of the art and the quality of safe condition, be directly connected to the person, device security and product design and production efficiency, it is classified as special equipment in addition special management by China, runs well, makes good use of the key link that weight-lifting equipment is safety in production.Because fault, violating the regulations or maintaining are not good at, will cause a serious accident, also can cause very large economic loss simultaneously.The type of tower crane injury accident is a lot, wherein the suspension hook accident of rushing to summit is very typical tower crane fault type, and it causes the main parts size of weight-lifting equipment to damage, as broken steel rope, squeeze bad fixed pulley or assembly pulley, break suspension hook group, burn out lifting motor etc.; Suspension hook group and hoisting heavy is caused to fall.Suspension hook is rushed to summit to fall and is gently then smashed surface facility and equipment, heavy then probably cause the personal casualty below tower crane.
The factor causing suspension hook to rush to summit generally has two kinds of situations according to the case run in the past: one is that after height limitator limit is fallen, chaufeur presses bypass button when continuing to hoist, and focusing on hanging on thing, have ignored suspension hook, cause suspension hook to rush to summit; Two is that the suspension hook caused that rises at a high speed in the ignorant situation of chaufeur is rushed to summit because height limitator comes off or limiting device damage with the pin that rope roll connects.
Summary of the invention
The object of the application is to provide the anti-suspension hook of a kind of tower crane and rushes to summit device and method, strengthens tower crane safety management, and prevention tower crane is rushed to summit accident.
In conjunction with above-mentioned purpose, the application provides the anti-suspension hook of a kind of tower crane to rush to summit device, and described device comprises:
Rotary encoder, is connected to the range limiter of described tower crane, is followed the traction spool movement of described tower crane by described range limiter;
Programmable logic controller (PLC), is connected by signal cable with described rotary encoder, and is connected with the motion control device signal of described tower crane.
Preferably, described rotary encoder is arranged in a protecting crust.
Preferably, described signal cable comprises incoming signal cable and output signal cable, and the power cable of described incoming signal cable, output signal cable and described tower crane all separately lays between two.
Preferably, described incoming signal cable and output signal cable are all outer is surrounded by screen layer.
Preferably, described signal cable is multicable, one end ground connection of the heart yearn for subsequent use of described multicable.
Preferably, described rotary encoder has an independently shielding wire, described shielding wire ground connection.
Preferably, the resolution of described rotary encoder often exports 80 ~ 120 pulses mutually for often turning.
Preferably, described programmable logic controller (PLC) has independently grounding jumper, described earth connection.
Preferably, described programmable logic controller (PLC) is arranged in an electric cabinet, and the distance of the thoughtful described electric cabinet inwall of described programmable logic controller (PLC) four is greater than 50 millimeters.
Preferably, the traction spool movement of described tower crane followed by described rotary encoder, and sends impulse singla according to the motion conditions of described hitch wheel; Described programmable logic controller (PLC) obtains described impulse singla, described impulse singla and setting numerical value are compared, and the location information of the suspension hook of described tower crane is obtained according to described impulse singla, the motion of motion control device to described suspension hook controlling described tower crane according to described location information adjusts.
Preferably, described programmable logic controller (PLC) comprises central memory, input interface, output interface, communication module, Programmer and power supply, and wherein said communication module receives by described input interface the impulse singla that described rotary encoder sends; Described Programmer according to described central memory signal control, by impulse singla described in described communication module process; Described communication module sends control signal by described output interface to the motion control device of described tower crane.
Preferably, described Programmer comprises the button processing module of signal interconnection, communication module, pid control module and fault alarm module, wherein: described button processing module is connected with the motion control device signal of described tower crane; Described communication module is connected with the motion control device signal of described tower crane; Described pid control module is connected with described rotary encoder through signals; Described fault alarm module is connected with described button processing module, communication module, pid control module signal.
Preferably, described button processing module controls startup and the stopping of the motion control device of described tower crane; Described communication module obtains the operating speed of the motion control device controlling described tower crane; The impulse singla that described pid control module receives described rotary encoder obtains the location information of the suspension hook of described tower crane; The signal control that described fault alarm module sends according to described button processing module, communication module, pid control module is reported to the police.
The application also provides the anti-suspension hook of a kind of tower crane to rush to summit method, and described method comprises:
By a rotary encoder, be connected to the range limiter of described tower crane, followed the traction spool movement of described tower crane by described range limiter;
One programmable logic controller (PLC) is connected by signal cable with described rotary encoder, and is connected with the motion control device signal of described tower crane.
Preferably, the traction spool movement of described tower crane followed by described rotary encoder, and sends impulse singla according to the motion conditions of described hitch wheel; Described programmable logic controller (PLC) obtains described impulse singla, described impulse singla and setting numerical value are compared, and the location information of the suspension hook of described tower crane is obtained according to described impulse singla, the motion of motion control device to described suspension hook controlling described tower crane according to described location information adjusts.
Preferably, described programmable logic controller (PLC) comprises central memory, input interface, output interface, communication module, Programmer and power supply, and wherein said communication module receives by described input interface the impulse singla that described rotary encoder sends; Described Programmer according to described central memory signal control, by impulse singla described in described communication module process; Described communication module sends control signal by described output interface to the motion control device of described tower crane.
Preferably, described Programmer comprises the button processing module of signal interconnection, communication module, pid control module and fault alarm module, wherein: described button processing module is connected with the motion control device signal of described tower crane; Described communication module and described button processing module control startup and the stopping of the motion control device of described tower crane; Described communication module obtains the operating speed of the motion control device controlling described tower crane; The impulse singla that described pid control module receives described rotary encoder obtains the location information of the suspension hook of described tower crane; The signal control that described fault alarm module sends according to described button processing module, communication module, pid control module is reported to the police.
Preferably, described fault alarm module adopts delayed alarm.
Preferably, described rotary encoder is arranged in a protecting crust.
Preferably, described signal cable comprises incoming signal cable and output signal cable, and the power cable of described incoming signal cable, output signal cable and described tower crane all separately lays between two.
Preferably, described incoming signal cable and output signal cable are all outer is surrounded by screen layer.
Preferably, described signal cable is multicable, one end ground connection of the heart yearn for subsequent use of described multicable.
Preferably, described rotary encoder has an independently shielding wire, described shielding wire ground connection.
Preferably, the resolution of described rotary encoder often exports 80 ~ 120 pulses mutually for often turning.
Preferably, described programmable logic controller (PLC) has independently grounding jumper, described earth connection.
Preferably, described programmable logic controller (PLC) is arranged in an electric cabinet, and the outer wall of described programmable logic controller (PLC) is greater than 50 millimeters to the distance of described electric cabinet inwall.
In sum, the application to rush to summit device and method by providing the anti-suspension hook of a kind of tower crane, comprise rotary encoder and programmable logic controller (PLC), the motion conditions of the traction spool of described tower crane is obtained by rotary encoder, and then obtain the situation of described tower crane, and this motion conditions is sent to described programmable logic controller (PLC) by impulse singla, described programmable logic controller (PLC) is according to impulse singla, calculate situation and the motion conditions of the suspension hook of described tower crane in real time, then each motion control device of described tower crane is controlled according to the situation of suspension hook and motion conditions, to adjust position and the motion of described suspension hook, and to each motion control device fault described, the abnormal condition such as overweight condition and alarm, notice operating personal discharges fault as early as possible, guarantee described tower crane normally, operate safely.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:
Fig. 1 shows for the anti-suspension hook of tower crane in the application one embodiment is rushed to summit the structural representation of device.
Detailed description of the invention
The core concept of the application is, to rush to summit device by providing the anti-suspension hook of a kind of tower crane, comprise rotary encoder and programmable logic controller (PLC), the motion conditions of the traction spool of described tower crane is obtained by rotary encoder, and then obtain the situation of described tower crane, and this motion conditions is sent to described programmable logic controller (PLC) by impulse singla, described programmable logic controller (PLC) is according to impulse singla, calculate situation and the motion conditions of the suspension hook of described tower crane in real time, then each motion control device of described tower crane is controlled according to the situation of suspension hook and motion conditions, to adjust position and the motion of described suspension hook, and to each motion control device fault described, the abnormal condition such as overweight condition and alarm, notice operating personal discharges fault as early as possible, guarantee described tower crane normally, operate safely.
Fig. 1 shows for the anti-suspension hook of tower crane in the application one embodiment is rushed to summit the structural representation of device.In conjunction with above-mentioned core concept and Fig. 1, the application provides the anti-suspension hook of a kind of tower crane to rush to summit device, and described device comprises: rotary encoder 100 and programmable logic controller (PLC) 200.
Wherein, described rotary encoder 100 is connected to the range limiter of described tower crane, is followed the traction spool movement of described tower crane by described range limiter 300; Described programmable logic controller (PLC) 200 is connected by signal cable with described rotary encoder 100, and is connected with the motion control device signal of described tower crane.
The traction spool movement of described tower crane followed by described rotary encoder 100, and sends impulse singla according to the motion conditions of described hitch wheel; Described programmable logic controller (PLC) 200 obtains described impulse singla, described impulse singla and setting numerical value are compared, and the location information of the suspension hook of described tower crane is obtained according to described impulse singla, the motion of motion control device to described suspension hook controlling described tower crane according to described location information adjusts.
In the embodiment of the application, described rotary encoder 100 is a kind of photo-electric rotary measurement device, and tested angular transposition is directly changed into digital signal (high-speed pulse signal) by it.Therefore the output pulse signal of rotary encoder 100 directly can be inputed to programmable logic controller (PLC) 200, utilize the high-speed counter of programmable logic controller (PLC) 200 to count its impulse singla, to obtain result of a measurement.The haulage cable system that the work of described tower crane lifting goods is mainly made up of trailer wagon, suspension hook and the hoist rope wiring system be connected with motor have been come.Suspension hook drives goods to do the movement of vertical direction up and down on arm, the rise and fall of the hoist rope Systematical control goods be connected with motor.Rotary encoder 100 is arranged on range limiter 300, rotary encoder 100 links together with travel switch plunging joint, the hitch wheel of tower crane is driven by traction electric machine, when hitch wheel operates, travel switch will be driven to rotate together with coder, now rotary encoder 100 is with traction spool movement and to programmable logic controller (PLC) 200 (PLC, Programmable Logic Controller) send the pulse of continuous print AB phase, programmable logic controller (PLC) 200 receives described pulse by calculating the position that namely can be exchanged into suspension hook.When spool turns, travel switch does not turn due to fault, rotary encoder 100 also can not rotate and not collect information, could judge whether travel switch is out of order.
In an embodiment of the application, not very high to the requirement of vertical direction precision and speed of response at work due to described tower crane, therefore only need impulse rate can meet process range and the accuracy requirement of programmable logic controller (PLC) 200 to the selection of described rotary encoder 100, described rotary encoder 100 can by sampling by the gear of hitch wheel to the suspension hook movement in vertical direction of described tower crane.
In measurement process, programmable logic controller (PLC) 200 is allowed to compare received pulse count and setting numerical value, corresponding output point is driven to carry out the control of output frequency to lifting mechanism frequency converter according to comparative result, realize reducing close to motor output frequency during setting value, thus reduction system inertia, reach pinpoint object.
The motion control device of described tower crane comprises lifting machine, and described lifting mechanism belongs to potential energy mechanism loading, and described lifting mechanism uses a frequency converter, and the mode of described lifting mechanism selects the vector control mode of band PG.Described programmable logic controller (PLC) 200 receives the feedback signal of motor, and the feedback signal of described motor is the feedback signal that rotary encoder 100 is sent to through digital to analogy conversion card, avoids the downslide of suspension hook.
In preferred embodiment, described rotary encoder 100 is arranged in a protecting crust.Described signal cable comprises incoming signal cable and output signal cable, and the power cable of described incoming signal cable, output signal cable and described tower crane all separately lays between two.Described incoming signal cable and output signal cable are all outer is surrounded by screen layer.Described signal cable is multicable, one end ground connection of the heart yearn for subsequent use of described multicable.Described rotary encoder 100 has an independently shielding wire, described shielding wire ground connection.
For making the anti-suspension hook of tower crane rush to summit the more durable and signal stabilization of device, choosing of described rotary encoder 100 will meet two aspects, and one is meet the maximum pulse rate that programmable logic controller (PLC) 200 receives, and two is that the precision measured at least reaches 10 millimeters.Therefore, in preferred embodiment, described rotary encoder 100 selects resolution 80P/R ~ 120P/R (often turn and often export 80 ~ 120 pulses mutually), and best is chosen as 100P/R (often turn every and export 100 pulses mutually).
Further, because rotary encoder 100 belongs to precision element, crane machine working environment is very severe, and the major issue in use run into is how disturbance rejection.Concrete measure has: 1) install a protecting crust again additional in coder outside, to strengthen protecting it.2) do not want strenuous vibration when installing and using and beat, the coder be installed in detection of gear requires that it is installed and is not more than 0.2mm with transmission shaft error.3) shielded cable during Signal transmissions, shielding wire ground connection.4) select and be not afraid of rainwater, dust, the industrial grade coder of acid and alkali resistance corrosion guard grade IP68.
In addition, described rotary encoder 100 has four lead-in wires, and wherein 2 is pulse output line A and B, and 1 is COM end line, and 1 is power lead D.The power supply of described rotary encoder 100 can be external source, also directly can use the power supply DC24V of programmable logic controller (PLC) 200.Power-extremely will be held with the COM of coder and be connected, and positive terminal is connected with the power end of coder.The COM end of coder and programmable logic controller (PLC) 200 input COM and hold and be connected, and A, B two-phase pulse output line is directly connected with the input end of programmable logic controller (PLC) 200, will note the response time of the input of programmable logic controller (PLC) 200 during connection.Some rotary encoders 100 also have a shielding wire, will by shielding wire ground connection during use.
Described programmable logic controller (PLC) 200 comprises central memory, input interface, output interface, communication module, Programmer and power supply, and wherein said communication module receives by described input interface the impulse singla that described rotary encoder 100 sends; Described Programmer according to described central memory signal control, by impulse singla described in described communication module process; Described communication module sends control signal by described output interface to the motion control device of described tower crane.
In in the selection of programmable logic controller (PLC) 200, current programmable logic controller (PLC) 200 can selectivity have preferably Siemens Company, Japan Mitsubishi, Omron, the U.S. AB company etc., according to the selection of cost performance, count according to the I/0 of controlled object and the consideration of the aspect such as technological requirement, scanning speed, self-diagnostic function, in preferred embodiment, the application adopts the FX1N series of programmable logic controller 200 of Mitsubishi.FX1N series is Siemens Company's small-sized programmable sequence controller, can light locomotive running, due to it there is several functions module and Human machine interface available, so system is integrated very convenient, and programmable logic controller (PLC) 200 network can be formed easily.It has multiple functional programming and industrial control configuration software simultaneously, make when the design completing control system simpler, almost can complete the control task of any function, there is reliability simultaneously high, the feature that running velocity is fast, inherit and played its technical advantage in large and medium-sized programmable logic controller (PLC) 200 field, there is abundant instruction set, there is powerful multiple integrated functionality and real-time characteristic, its ratio of performance to price is high, so be ideal control convenience in the field that scale is not too large.Certainly, above-described embodiment is as just description, the selection of the application to programmable logic controller (PLC) 200 is not restricted to this, and other can meet the anti-suspension hook of described tower crane and rush to summit the programmable logic controller (PLC) 200 of device job requirement also within the thought range of the application.
Described Programmer comprises the button processing module of signal interconnection, communication module, pid control module and fault alarm module, wherein: described button processing module is connected with the motion control device signal of described tower crane; Described communication module is connected with the motion control device signal of described tower crane; Described pid control module is connected with described rotary encoder 100 signal; Described fault alarm module is connected with described button processing module, communication module, pid control module signal.
Described button processing module controls startup and the stopping of the motion control device of described tower crane; Described communication module obtains the operating speed of the motion control device controlling described tower crane; The impulse singla that described pid control module receives described rotary encoder 100 obtains the location information of the suspension hook of described tower crane; The signal control that described fault alarm module sends according to described button processing module, communication module, pid control module is reported to the police.
In the present system, the main task of the program design of programmable logic controller (PLC) 200 is the inputs accepting external switch signal (button, relay), judge the device such as current state of the system and output signal district control contactor, relay, to complete corresponding control task.In addition, another task accepts upper computer exactly and obtains control command, automatically to sample.The Software for Design part of programmable logic controller (PLC) 200 adopts modular method, and the program design of programmable logic controller (PLC) 200 has four modules: button processing module, communication module, pid control module, fault alarm module.
Described button module mainly processes the on off control of each motor and electromagnetic valve.
Described communication module is connected with the motion control device signal of described tower crane, described tower crane adopts microcontroller (MicroMaster) frequency converter to carry out speed governing to crane motor in one embodiment, so to the speed governing of hoisting crane in native system, be in fact exactly the control to its microcontroller (MicroMaster) frequency converter.Mitsubishi FX1N series of programmable logic controller software tool pack provides LISS agreement to complete the communication of programmable logic controller (PLC) 200 and frequency converter.With the communication of frequency converter, asynchronous when scanning the CPL of programmable logic controller (PLC) 200, completing its communication things of a frequency conversion needs CPU scanning several times usually.This depends on continuous print frequency converter number, baud rate, and the sweep time of CPU.
In the present embodiment, described communication module uses the programmed order of USS agreement as follows: by calling USS_IN IT instruction to change USS messaging parameter, as enabled or forbidding USS agreement, setting baud rate, the frequency converter of which address is indicated to be activate (can communicate with it).Any frequency converter being masked as activation all automatically carries out polling system on backstage, collects state, and prevents the serial link time-out of frequency converter.
Described pid control module (ratio, integration, differential control module, Proportion-Integration-Differentiation, described pid control module is connected with described rotary encoder 100 signal the control of bridging crane main auxiliary hoisting mechanism speed, it is an existing very important technical index, native system records motor speed by by rotary encoder 100, digital quantity is converted to by digital to analogy conversion card, pass to frequency converter, compare with setting speed, adopt conventional pid algorithm just can reach ideal result on control effects, so, native system lifting mechanism control program is conventional Digital PID Algorithm and controls in conjunction with the pid control module in programmable logic controller (PLC) 200.
Described fault alarm module is connected with described button processing module, communication module, pid control module signal.In order to real-time informing operator failure message, so that trouble-shooting as soon as possible, guarantee that whole system is normally run, this control system has good fault alarm measure.So scan corresponding sensor input signal all the time in programmable logic controller (PLC) 200 program, once there be the faults such as all in frequency converter failure, overweight, this equipment should be cut off at once, and start buzzer phone, report to the police.Consider the interference that industry spot is possible, (1) adopts delayed alarm in a preferred embodiment.Namely only have when alerting signal continues the regular hour (being generally a few tens of milliseconds to hundreds of millisecond), just can think there is fault.(2) when starting outfit, progressively warning is opened; And when arrestment, progressively block warning.Above-mentioned two measures can prevent flase alarm by actv..
Described programmable logic controller (PLC) 200 has independently grounding jumper, described earth connection.Described programmable logic controller (PLC) 200 is arranged in an electric cabinet, and the distance of the thoughtful described electric cabinet inwall of described programmable logic controller (PLC) 200 4 is greater than 50 millimeters.
The main application scenario of Programmable Logic Controller is industry spot, and in working environment, the normal operation of various interference on system equipment also exists serious impact.So no exception in the present system, be necessary the interference protection measure considering programmable logic controller (PLC) 200.
Jamproof major measure has:
(1) incoming signal cable, output signal cable and power cable all will separately lay, and can not bind together.
(2) need if desired to select the input and output signal cable with screen layer, and note one end ground connection.
(3) heart yearn for subsequent use in multicable also wants one end ground connection, expands shielding action first, second suppresses the signal cross-talk between heart yearn and external disturbance.
(4) for avoiding interference, the signal of synonym level grade could transmit with a multicable.So, to digital signal and analog signal, under any circumstance, all must separate cable and transmit.Low level signal line should separate with other signal wire (SW).Shorten the length of analog quantity I/O signal wire (SW) as far as possible, and adopt twin-core shielding wire as signal wire (SW).
(5) the electric cabinet of programmable logic controller (PLC) 200 should have independently grounding jumper, and grounding resistance is less than 10 ohm.
(6) cable causing programmable logic controller (PLC) 200 cabinet will can produce the device of electromagnetic interference as far as possible away from those.
(7) generally programmable logic controller (PLC) 200 will be loaded in special electric cabinet, and programmable logic controller (PLC) 200 surrounding leaves the clear space of more than 50mm, ensure sound ventilation environment.To try not that programmable logic controller (PLC) 200 is arranged on many dirt, have oil smoke, have the place of conduction dust, the gas that is corrosive, vibration, thermal source or humidity.
In addition, the pulse count that programmable logic controller (PLC) is risen by calculating and declined, then for showing the current location of trailer coupling vertical direction after converting; A D register is delivered to by the pulse count calculated needing, advance according to lifting mechanism or retreat and carry out plus-minus counting by programmable logic controller (PLC), moment compares the numerical value in D register and programmable logic controller (PLC), corresponding output point is driven to carry out the control of output frequency to frequency converter according to comparative result, realize slack-off close to Feeding speed during setting value, thus reach accurate location.
The high-speed counter composition of device rotary encoder 100 and programmable logic controller (PLC) 200 described in the application is a set of spacingly to be protected, and when height under hook arrives the height needing to slow down, the pulse count that counting machine records is sent into the register of deceleration; When up arriving limit height position again, pulse count is sent into the register of height limit.During such each run, when the pulse count that counting machine records is more than or equal to the numerical value in deceleration register, export a relief relay, remove the high speed gear cutting off suspension hook, make its automatic retarding; When the pulse count that counting machine records is more than or equal to the numerical value in height limit register, export a relief relay too, go to cut off riser circuit; When being more than or equal to the register mileage value of height limit if there is pulse count, and original mechanical type height limit is also connected, and illustrates that original height limitator has fault; If or rise run time coder do not count, illustrate that the spacing pin is connected with rope roll comes off, just start the annunciator prompting chaufeur that a relief relay goes connection one special, then make professional keep in repair.Avoid because described height limitator comes off or limiting device damage with the pin that rope roll connects, in the ignorant situation of chaufeur, the situation that the suspension hook causing suspension hook to rise at a high speed causing is rushed to summit, therefore, the anti-suspension hook of tower crane device of rushing to summit can reach the prevention and control effect of accident effectively, ensure the safety of mechanical equipment and camp site person property, achieved good social benefit, become a kind of safety prevention measure of building tower crane.
To those skilled in the art, obvious the application is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit or the essential characteristic of the application, can realize the application in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, the scope of the application is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the application.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in device claim or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (26)
1. the anti-suspension hook of tower crane is rushed to summit a device, it is characterized in that, comprising:
Rotary encoder, is connected to the range limiter of described tower crane, is followed the traction spool movement of described tower crane by described range limiter;
Programmable logic controller (PLC), is connected by signal cable with described rotary encoder, and is connected with the motion control device signal of described tower crane.
2. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, described rotary encoder is arranged in a protecting crust.
3. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, described signal cable comprises incoming signal cable and output signal cable, and the power cable of described incoming signal cable, output signal cable and described tower crane all separately lays between two.
4. the anti-suspension hook of tower crane as claimed in claim 3 is rushed to summit device, and it is characterized in that, described incoming signal cable and output signal cable are all outer is surrounded by screen layer.
5. the anti-suspension hook of tower crane as claimed in claim 3 is rushed to summit device, and it is characterized in that, described signal cable is multicable, one end ground connection of the heart yearn for subsequent use of described multicable.
6. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, it is characterized in that, described rotary encoder has an independently shielding wire, described shielding wire ground connection.
7. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, the resolution of described rotary encoder often exports 80 ~ 120 pulses mutually for often turning.
8. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, described programmable logic controller (PLC) has independently grounding jumper, described earth connection.
9. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, described programmable logic controller (PLC) is arranged in an electric cabinet, and the distance of the thoughtful described electric cabinet inwall of described programmable logic controller (PLC) four is greater than 50 millimeters.
10. the anti-suspension hook of tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, the traction spool movement of described tower crane followed by described rotary encoder, and sends impulse singla according to the motion conditions of described hitch wheel; Described programmable logic controller (PLC) obtains described impulse singla, described impulse singla and setting numerical value are compared, and the location information of the suspension hook of described tower crane is obtained according to described impulse singla, the motion of motion control device to described suspension hook controlling described tower crane according to described location information adjusts.
The anti-suspension hook of 11. tower crane as claimed in claim 1 is rushed to summit device, and it is characterized in that, described programmable logic controller (PLC) comprises central memory, input interface, output interface, communication module, Programmer and power supply, wherein
Described communication module receives by described input interface the impulse singla that described rotary encoder sends;
Described Programmer according to described central memory signal control, by impulse singla described in described communication module process;
Described communication module sends control signal by described output interface to the motion control device of described tower crane.
The anti-suspension hook of 12. tower crane as claimed in claim 1 is rushed to summit device, it is characterized in that, described Programmer comprises the button processing module of signal interconnection, communication module, pid control module and fault alarm module, wherein: described button processing module is connected with the motion control device signal of described tower crane; Described communication module is connected with the motion control device signal of described tower crane; Described pid control module is connected with described rotary encoder through signals; Described fault alarm module is connected with described button processing module, communication module, pid control module signal.
The anti-suspension hook of 13. tower crane as claimed in claim 12 is rushed to summit device, and it is characterized in that, described button processing module controls startup and the stopping of the motion control device of described tower crane; Described communication module obtains the operating speed of the motion control device controlling described tower crane; The impulse singla that described pid control module receives described rotary encoder obtains the location information of the suspension hook of described tower crane; The signal control that described fault alarm module sends according to described button processing module, communication module, pid control module is reported to the police.
14. 1 kinds of anti-suspension hooks of tower crane are rushed to summit method, it is characterized in that, comprising:
By a rotary encoder, be connected to the range limiter of described tower crane, followed the traction spool movement of described tower crane by described range limiter;
One programmable logic controller (PLC) is connected by signal cable with described rotary encoder, and is connected with the motion control device signal of described tower crane.
The anti-suspension hook of 15. tower crane as claimed in claim 14 is rushed to summit method, it is characterized in that,
The traction spool movement of described tower crane followed by described rotary encoder, and sends impulse singla according to the motion conditions of described hitch wheel;
Described programmable logic controller (PLC) obtains described impulse singla, described impulse singla and setting numerical value are compared, and the location information of the suspension hook of described tower crane is obtained according to described impulse singla, the motion of motion control device to described suspension hook controlling described tower crane according to described location information adjusts.
The anti-suspension hook of 16. tower crane as claimed in claim 15 is rushed to summit method, and it is characterized in that, described programmable logic controller (PLC) comprises central memory, input interface, output interface, communication module, Programmer and power supply, wherein
Described communication module receives by described input interface the impulse singla that described rotary encoder sends;
Described Programmer according to described central memory signal control, by impulse singla described in described communication module process;
Described communication module sends control signal by described output interface to the motion control device of described tower crane.
The anti-suspension hook of 17. tower crane as claimed in claim 16 is rushed to summit method, it is characterized in that, described Programmer comprises the button processing module of signal interconnection, communication module, pid control module and fault alarm module, wherein: described button processing module is connected with the motion control device signal of described tower crane; Described communication module and described button processing module control startup and the stopping of the motion control device of described tower crane; Described communication module obtains the operating speed of the motion control device controlling described tower crane; The impulse singla that described pid control module receives described rotary encoder obtains the location information of the suspension hook of described tower crane; The signal control that described fault alarm module sends according to described button processing module, communication module, pid control module is reported to the police.
The anti-suspension hook of 18. tower crane as claimed in claim 14 is rushed to summit method, it is characterized in that, described fault alarm module adopts delayed alarm.
The anti-suspension hook of 19. tower crane as claimed in claim 14 is rushed to summit method, and it is characterized in that, described rotary encoder is arranged in a protecting crust.
The anti-suspension hook of 20. tower crane as claimed in claim 14 is rushed to summit method, it is characterized in that, described signal cable comprises incoming signal cable and output signal cable, and the power cable of described incoming signal cable, output signal cable and described tower crane all separately lays between two.
The anti-suspension hook of 21. tower crane as claimed in claim 20 is rushed to summit method, it is characterized in that, described incoming signal cable and output signal cable are all outer is surrounded by screen layer.
The anti-suspension hook of 22. tower crane as claimed in claim 20 is rushed to summit method, and it is characterized in that, described signal cable is multicable, one end ground connection of the heart yearn for subsequent use of described multicable.
The anti-suspension hook of 23. tower crane as claimed in claim 14 is rushed to summit method, it is characterized in that, described rotary encoder has an independently shielding wire, described shielding wire ground connection.
The anti-suspension hook of 24. tower crane as claimed in claim 14 is rushed to summit method, it is characterized in that, the resolution of described rotary encoder often exports 80 ~ 120 pulses mutually for often turning.
The anti-suspension hook of 25. tower crane as claimed in claim 14 is rushed to summit method, and it is characterized in that, described programmable logic controller (PLC) has independently grounding jumper, described earth connection.
The anti-suspension hook of 26. tower crane as claimed in claim 14 is rushed to summit method, and it is characterized in that, described programmable logic controller (PLC) is arranged in an electric cabinet, and the outer wall of described programmable logic controller (PLC) is greater than 50 millimeters to the distance of described electric cabinet inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410673932.2A CN104528558A (en) | 2014-11-21 | 2014-11-21 | Device and method used for preventing collision of tower crane lifting hook with top |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410673932.2A CN104528558A (en) | 2014-11-21 | 2014-11-21 | Device and method used for preventing collision of tower crane lifting hook with top |
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| CN104528558A true CN104528558A (en) | 2015-04-22 |
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| CN201410673932.2A Pending CN104528558A (en) | 2014-11-21 | 2014-11-21 | Device and method used for preventing collision of tower crane lifting hook with top |
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Application publication date: 20150422 |