CN201002927Y - Tower crane working state recording and space limiting protection device - Google Patents
Tower crane working state recording and space limiting protection device Download PDFInfo
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- CN201002927Y CN201002927Y CNU2006201119112U CN200620111911U CN201002927Y CN 201002927 Y CN201002927 Y CN 201002927Y CN U2006201119112 U CNU2006201119112 U CN U2006201119112U CN 200620111911 U CN200620111911 U CN 200620111911U CN 201002927 Y CN201002927 Y CN 201002927Y
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Abstract
A work condition record and limiting protection device for the tower crane is an all digital apparatus with a data display function can monitor, record, display and control the work condition of the tower crane. The utility model comprises a record display host, a weight part, an amplitude part, a lifting part and a pressure sensor. The utility model is mainly characterized in that: the data transmission between the sensors and the record display host is a coded digital signal so as to improve the interference defending ability during the data transmission process; the utility model integrates the work condition record and limiting protection as a whole; besides the limiting protection of torque, weight, amplitude and height, the utility model also has the protection functions for overpressure, under pressure and second overload and makes a cascade protection to the high speed and the low speed aiming at the different lifting speed. The utility model has an overlong data recording time which can reach 12 months, and the operator can inquire the recorded data by inputting the date needed to be inquired through the keyboard on the record display host; the utility model adopts a dot matrix LCD, an all Chinese operation menu and prompt, being easy for operating.
Description
Affiliated technical field
The utility model is a kind of electronic machine that the tower crane working condition is write down, shows and provides protection when tower crane transfinites.
Background technology
The limiting and protecting device of tower crane all adopts mechanical limiting and protecting device at present, the record, the display capabilities that do not have hoisting crane work situation, survey precision is low, weight and torque limiter temperature factor are excessive, and mechanical weight and torque limiter can not play the actv. protective effect when temperature traverse is big; Mechanical torque limiter of while carries out torgue measurement by the stress deformation of steel structure and the tower-type crane load curve can not finely coincide.Mechanical limiting and protecting device has lacked hoisting crane work situation Presentation Function makes tower machine operation worker can not have one comprehensively to understand to hoisting crane work situation at work, can not in time grasp the potential safety hazard that may occur; Mechanical limiting and protecting device does not have data recording function, after accident takes place, is unfavorable for the basic reason that the accident of searching takes place, and can not provide strong data support for formulating prevention scheme.
Summary of the invention
In order to overcome the existing deficiency of tower crane limiting and protecting device on function and performance, the utility model provides a kind of tower crane operating mode record and fender guard of electronic type.It has tower crane working condition record, demonstration, defencive function, the limit data that can occur in the tower crane work the every day in 12 months carries out record, the number of times that comprises the maximum hoisting weight of every day and time of origin and tower machine working condition at that time, maximum lifting moment and time of origin and tower machine working condition at that time, the maximum supply power voltage on the same day and minimum power supply voltage, the lifting of super moment and excess weight lifting is added up, and the operating data of stopping in preceding 5 minutes is carried out omnidistance record by per second interval once; Has pre-alarm function, this device will send the pre-alarm signal when tower machine lift heavy reaches 90% maximum lift heavy or 90% maximum lifting moment, the careful operation of prompting operation person is also cut off the high-speed power of luffing and lifting mechanism simultaneously, this device cut-out high-speed power automatically when amplitude variation trolley or suspension hook move to spacing some 2M of distance, only allow tower machine low cruise, can effectively avoid " height is towards the spacing " accident that causes because of misoperation; Be provided with the secondary segmentation freight weight limit function that hoists, in order to strengthen protection to lifting motor, at different with the low speed lift heavy amount at a high speed characteristic volitional check of lifting mechanism improperly lifting speed realize protection to lifting motor; Be provided with super force moment protection function, when the tower machine enters the spacing state of super moment, can cut off automatically the tower machine to dangerous direction move (do not allow the tower machine might increase the lifting moment operation, by restriction amplitude variation trolley ahead running, limit simultaneously suspension hook upwards operation realize) power supply, allow the tower machine (promptly to allow the tower machine to reduce to lift by crane the operation of moment to operation simultaneously to secure side, by allowing amplitude variation trolley to move backward, allowing suspension hook to move the minimizing hook load downwards simultaneously realizes), and provide the sound and light alarm signal; Be provided with the excess weight defencive function, this device will cut off the upwards power supply of operation of lifting motor when the hoisting weight of tower machine surpasses maximum permission lift heavy amount, only allow lifting motor to move downwards; Be provided with the height under hook defencive function, this device will cut off the upwards power supply of operation of lifting motor when suspension hook goes upward to upper limit, only allow lifting motor to move downwards; Be provided with luffing amplitude defencive function, when amplitude variation trolley move to the back when spacing this device will cut off the power supply that the luffing motor moves backward, only allow the amplitude variation trolley ahead running, and this device will cut off the power supply of luffing motor ahead running when amplitude variation trolley moves to front limit, only allow amplitude variation trolley to move backward; Be provided with the power supply protection function, each motor that this device will cut off on the power supply protection tower machine of tower machine secondary circuit when abnormal condition such as overvoltage, under-voltage, phase shortage appear in power supply can not burn because of electric voltage exception.
The technical scheme that its technical matters that solves the utility model adopts
This tower crane operating mode record and fender guard are by partly forming (this device connects referring to accompanying drawing 1) by demonstration record main frame, weight sensor and transmitter, luffing sensor, the sensor that hoists, voltage sensor etc.
Demonstration is write down main frame and is adopted micro controller system (STC89C58) to carry out data display, adopt six key formula keyboards to operate (demonstration is write down host circuit figure referring to accompanying drawing 4, and demonstration part circuit diagram is referring to accompanying drawing 5) as communication interface, employing Liquid Crystal Display (LCD) (ABG122032) as this device internal clocking, employing IC (SN78LBC184) as data storage cell, employing clock IC (PCF8563) as central processing unit, employing ferroelectric memory (FM24C256);
Show that the record main frame is installed on the tower machine operation deck plate, provide the real time operation state of tower machine by read-out to the operator, the operation keyboard that the operator also can be by showing the record main frame carries out operation setting and the inquiry of historical data to this device and does not need accessory equipment by other.
Show that the record main frame carries out data communication by RS485 interface and each sensor that is installed in tower crane, power up aft engine and carry out self check, each sensor is carried out initial configuration.After finishing, initialization enters the work at present situation of working interface demonstration tower machine.When moving, the tower machine shows that writing down main frame judges the sensing data that collects, whether comprise that hypermutation is spacing, whether super hoist spacing, whether super lift heavy amount is spacing, super maximum voltage whether, minimum voltage, if surpassing corresponding limits value main frame, current working sends the corresponding operating power of instruction cut-out to voltage sensor, simultaneously the lift heavy amount that collects is compared in conjunction with work at present amplitude and embedded tower crane load table and judge whether super moment (the tower crane load table that embedded tower crane load table system provides according to tower machine originating firm is made, fit like a glove with the tower crane load curve that uses this device), as current lift heavy amount is that the maximum lift heavy amount main frame on the same day will deposit current tower machine operating mode in maximum hoisting weight data field and note the current time on the same day, current tower machine operating mode will be deposited in maximum lifting moment data field and note the current time on the same day as the current lifting moment maximum lifting moment main frame that is the same day, so that inquiry later on, surpass lift heavy amount limits value main frame as current lift heavy amount and will increase meter one time super lift heavy number of times on the same day, surpass lifting moment limits value main frame as current lifting moment and will increase meter one time super moment number of times on the same day, surpass high speed freight weight limit value main frame as current hoisting weight and send to voltage sensor and close the speed instruction that raises, cut off the high-revolving power supply that hoists.
Weight sensor is mended weight sensor body and the weight transmitter taste function and is formed by having temperature, and weight sensor body one end links to each other with tower machine hoisting wirerope, and the other end links to each other with tower machine crane arm is sharp.Hanging weight of heavy when the lift heavy thing will pass to the weight sensor body and cause that the weight sensor body produces distortion by tower machine hoisting wirerope, the distortion of weight sensor body varies in size and different with stressed, this physical change is changed into electric signal send the weight transmitter to handle by sticking on resistance strain gauge on the weight sensor body.
The weight transmitter adopt micro controller system (STC89C58) as data processing unit, adopt AD converter (ILC7109) as AD conversion unit, adopt instrument amplifier (AD620) as signal amplification unit, adopt IC (SN78LBC184) as communication interface.The analog signal that obtains from the weight sensor body is amplified, is sent to through the RS485 interface behind the analogue to digital conversion, data handing coding and show the record main frame (weight transmitter circuit figure is referring to accompanying drawing 6 by amplifier; ).
Voltage sensor has the function of control output and power supply supply concurrently.Voltage sensor is installed in the tower machine switch box with convenient link to each other with tower machine control loop (control output interface scheme drawing is referring to Figure of description 2).
Voltage sensor adopts micro controller system (STC89C58) as data processing unit, adopt AD converter (ADC0809) as AD conversion unit, adopt IC (SN78LBC184) as communication interface, adopt light-coupled isolation to drive relay as output interface, adopt Switching Power Supply IC (LM2596) to be the power supply of this device, adopting isolated DC/DC is that the in-line power of voltage sensor is kept apart the power supply of the sampled voltage of 380V and this device that (the voltage sensor circuit diagram is referring to Figure of description 3 with the Personal Safety that guarantees the operator fully; ).
Three-phase 380V voltage by voltage sensor connection terminal input is three-phase 3.8V through 100: 1 divider resistance dividing potential drop, sends into ADC0809 after the rectification and carries out analogue to digital conversion, handles coding by micro controller system and shows the record main frame after the RS485 interface sends to.
The output relay of voltage sensor is subjected to host computer control, and receiving after the control command of main frame is decoded by voltage sensor in-to-in micro controller system (STC89C58) and drive relay by light-coupled isolation realizes position limitation protection to the tower machine.
The luffing sensor and the sensor that hoists are structurally identical, on the cable drum of installation and luffing mechanism and lifting mechanism, distinguish by the difference of addressing respectively.
Luffing sensor (sensor hoists) adopt micro controller system (AT89C2051) as data processing unit, adopt opto-electronic pickup (HOA0901) as sampling unit, adopt IC (SN78LBC184) as communication interface (luffing sensor and hoist sensor circuit figure) referring to accompanying drawing 7, adopt the code wheel of a cylindrical tooth punching (100 tooth) sample (sampling principle is seen accompanying drawing 8).
By code wheel cable drum is divided into 100 parts, when drum diameter is not more than 318MM, can calculates sampling precision and be better than 10MM (the work range scope of tower crane is 2M～100M, and the precision that is better than 0.01M can satisfy operating needs fully):
Every part of circumferential length (MM) ≈ (drum diameter * π)/100
10MM≈(318MM×3.14)/100
Code wheel rotation synchronous when cable drum rotates with it, by opto-electronic pickup adopt pulse count, this pulse count has a corresponding relation promptly with the folding and unfolding length of steel rope:
Folding and unfolding length (MM)=pulse count * scale conversion coefficient of steel rope (MM/)
Luffing sensor (sensor hoists) send micro controller system to be rotated direction identification the pulse that collects to add (subtracting) counting according to the difference of hand of rotation simultaneously, sends to through the RS485 interface behind the coding to show the record main frame.
The beneficial effects of the utility model
This device uses the performance can strengthen tower machine limiting and protecting device on tower crane, the level of intelligence that improves tower machine limiting and protecting device, for the safe handling of tower machine provides more fully protection.The data display function makes the operator have one comprehensively to understand to the mode of operation of tower machine, and the operator is operated against regulations from subjective avoiding; Data recording function is effectively managed for supervisory management zone technological means is provided, and can prevent effectively that the operator from operating against regulations.
Description of drawings
Fig. 1 is a connection scheme drawing of the present utility model.
Fig. 2 is the interface schema of this device and tower machine control loop.
Fig. 3 is the voltage sensor circuit diagram.
Fig. 4 shows record host circuit figure.
Fig. 5 is demonstration and the keyboard circuit figure that shows the record main frame.
Fig. 6 is weight transmitter circuit figure.
Fig. 7 is the luffing and the sensor circuit figure that hoists.
Fig. 8 is the luffing and the sensor construction figure that hoists.
Below in conjunction with accompanying drawing the utility model is further specified:
The specific embodiment
Fig. 1 is a connection scheme drawing of the present utility model.
As shown in Figure 1: 1. tower crane switch box; 2. supply transformer; 3. voltage sensor; 4. control output wiring terminal; 5. tower-type crane operation platform; 6. show the record main frame; 7. luffing sensor; 8. sensor hoists; 9. weight transmitter; 10. weight sensor body.
In Fig. 1; the supply transformer (2) that is installed in the tower crane switch box (1) is that 15V powers to this device with the step-down of 380V power supply; voltage sensor (3) with the AC15V voltage regulation filtering of input after output DC12V to showing record main frame (6) and sensor (7), (8), (9), voltage sensor (3) will be finished position limitation protection by controlling output wiring terminal (4) from showing the instruction that record main frame (6) receives simultaneously.
Be stored in the memory device that shows in the record main frame after being installed on the data handing processing of sending in demonstration record main frame (6) receiving sensor (3), (7), (8), (9) on the tower-type crane operation platform (5); and control command mails to voltage sensor (3) and realizes the position limitation protection function, and the operating state data of tower machine is provided to the operator by read-out simultaneously.
Luffing sensor (7) be installed on the luffing mechanism of tower crane with amplitude-changing drum run-in synchronism to showing that the record main frame provides the work range data of tower machine.
The sensor (8) that hoists be installed on the lifting mechanism of tower crane with hoisting drum run-in synchronism to showing that the record main frame provides the height under hook data of tower machine.
Weight sensor body (10) one ends link to each other with tower machine hoisting wirerope, and the other end links to each other with tower machine crane arm point.Hanging weight of heavy when the lift heavy thing will pass to weight sensor body (10) and cause that weight sensor body (10) produces distortion by tower machine hoisting wirerope, the distortion of weight sensor body (10) varies in size and different with stressed, this physical change is changed into electric signal send weight transmitter (9) to handle by sticking on resistance strain gauge on the weight sensor body (10).Weight transmitter (9) amplifies after receiving the data that weight sensor body (10) transmits, send to behind the analogue to digital conversion, data handing coding and show record main frame (6).
Fig. 2 is the interface schema of this device and tower machine control loop.
Fig. 3 is the voltage sensor circuit diagram.
As shown in Figure 2: (1), (2) connect the input end that the 380V power supply is a supply transformer; (3), (4) be the mouth of supply transformer, output 15VAC powers for this device; After the inner rectification of overvoltage sensor, filtering, voltage stabilizing, export by (5), (7) number connection terminal; (5) 12VDC+ is output as and shows record main frame, sensor power supply; (6) communication bus COMA; (7) communication bus COMB; (8) power supply output ground;
(11) are that tower machine power supply is measured input ground wire N among Fig. 2; (12) (13) (14) are that tower machine three phase mains is measured input L1, L2, L3; The three-phase 380V voltage of input is three-phase 3.8V through 100: 1 divider resistance dividing potential drop, sends into after the rectification that ADC0809 carries out analogue to digital conversion among Fig. 3, handles coding by micro controller system and shows the record main frame after the RS485 interface sends to.
(15) (16) are the High-speed Control output that hoists among Fig. 2; (17) (18) are the output of luffing High-speed Control; (19) (20) are the lower limit control output that hoists; (21) (22) are the upper limit control output that hoists; (23) (24) are spacing control output behind the luffing; (25) (26) are luffing front limit control output; (27) (28) are total power protection control output that rises.
The controllable function of this device is by installing each relay output interior with voltage sensor; each control is output as a pair of electrical contact; each output contact all is in closure state when the tower machine is operated in the allowed band; the operation of tower machine is unrestricted; when the tower machine transfinites; corresponding output contact is converted to open mode, and this operation of tower machine can not be proceeded, thereby play a protective role.
Fig. 4 shows record host circuit figure.
Fig. 5 is demonstration and the keyboard circuit figure that shows the record main frame.
MCU among Fig. 4 (STC89C58RD+) be a High Performance micro controller system it be the core of this device, it is bearing the task of data handing, Communication Control, demonstration output, output control.
Each sensing data that collects by RS485 interface (75LBC184) among Fig. 4 enters MCU and handles, elder generation deposited among the Memory (FM24C256) with data the taking-up current time from clock circuit (PCF8563) when the data that need preservation were arranged, and sent the LCD1 among Fig. 5 to show the real-time working condition data of tower machine simultaneously.When the work of tower machine is transfinited, send cut-offing instruction, send instruction to voltage sensor by the RS485 interface and carry out position limitation protection by MCU.
Fig. 6 is weight transmitter circuit figure.
Amplify by amplifier Fig. 7 (AD620) from the analog signal that the weight sensor body obtains, be converted to digital signal by A and D converter (ILC7109) again, again by sending to demonstration record main frame through RS485 interface (75LBC184) behind micro controller system (AT89C52) the processing coding.
Fig. 7 is the luffing and the sensor circuit figure that hoists.
Fig. 8 is the luffing and the sensor construction figure that hoists.
1. sensor outer housings among Fig. 8; 2. code wheel; 3.PCB plate; 4. opto-electronic pickup; 5. aviation plug-and-socket; 6. locking screw emits; 7. locating bush; 8. bearing; 9. coupling spindle; 10. bearing seat.
Fig. 8 axis (9) connects (sensor that hoists is identical with luffing working sensor principle) with the tower crane amplitude variation cable drum, rotate synchronously with tower machine luffing cable drum, code wheel (2) is driven by axle (9), when the external tooth of code wheel (2) light patch with blocking light electric transducer (4) during by opto-electronic pickup (4), thereby collect the operating data of tower machine luffing cable drum.
Opto-electronic pickup U1 (HOA0902) bears data collection task among Fig. 7.When the external tooth of code wheel among Fig. 8 (2) light patch with blocking light electric transducer U1 during by opto-electronic pickup U1, then U1 sends interrupt signal one time to MCU (AT89C2051), MCU has access to have no progeny in this and takes out the hand of rotation signal of amplitude-changing drum from pin P7 (DIREC), as the amplitude-changing drum clickwise then number of pulses add 1 and calculate (otherwise then subtracting 1), and pulse data issued by RS485 interface (75LBC184) show and write down main frame.
Claims (3)
1. a tower crane operating mode writes down and limiting and protecting device; it is characterized in that: device is by showing that record main frame, voltage sensor, weight transmitter, weight sensor, luffing sensor, the sensor that hoists constitute, and each sensor is connected to by the RS485 bus and shows the record main frame.
2. tower crane operating mode record according to claim 1 and limiting and protecting device is characterized in that: show that the record main frame has the liquid crystal display interface.
3. tower crane operating mode record according to claim 1 and limiting and protecting device is characterized in that: each sensor is the sensor of output digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201119112U CN201002927Y (en) | 2006-12-11 | 2006-12-11 | Tower crane working state recording and space limiting protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201119112U CN201002927Y (en) | 2006-12-11 | 2006-12-11 | Tower crane working state recording and space limiting protection device |
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| Publication Number | Publication Date |
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| CN201002927Y true CN201002927Y (en) | 2008-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201119112U Expired - Fee Related CN201002927Y (en) | 2006-12-11 | 2006-12-11 | Tower crane working state recording and space limiting protection device |
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| CN (1) | CN201002927Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253773A (en) * | 2014-11-24 | 2016-01-20 | 徐州重型机械有限公司 | Overload data recording method and system and crane |
| CN105819338A (en) * | 2016-04-25 | 2016-08-03 | 乐清市天逸电器有限公司 | Traveling handle for crane and weight measuring method for crane |
| CN110019607A (en) * | 2017-11-09 | 2019-07-16 | 上海岩土工程勘察设计研究院有限公司 | Foundation Pit Construction working state recording method |
-
2006
- 2006-12-11 CN CNU2006201119112U patent/CN201002927Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253773A (en) * | 2014-11-24 | 2016-01-20 | 徐州重型机械有限公司 | Overload data recording method and system and crane |
| CN105819338A (en) * | 2016-04-25 | 2016-08-03 | 乐清市天逸电器有限公司 | Traveling handle for crane and weight measuring method for crane |
| CN105819338B (en) * | 2016-04-25 | 2018-01-16 | 乐清市天逸电器有限公司 | Driving handle and its method for measuring weight for crane |
| CN110019607A (en) * | 2017-11-09 | 2019-07-16 | 上海岩土工程勘察设计研究院有限公司 | Foundation Pit Construction working state recording method |
| CN110019607B (en) * | 2017-11-09 | 2021-03-09 | 上海勘察设计研究院(集团)有限公司 | Method for recording construction working condition of foundation pit engineering |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: CHEN XIANG ^ |
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| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Chen Xiang Number: 02 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Chen Xiang Number: 02 Volume: 24 |
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| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: CHEN XIANG ^ |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20100111 |