CN102785981A - Overload protector for construction elevator - Google Patents
Overload protector for construction elevator Download PDFInfo
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- CN102785981A CN102785981A CN2012102378519A CN201210237851A CN102785981A CN 102785981 A CN102785981 A CN 102785981A CN 2012102378519 A CN2012102378519 A CN 2012102378519A CN 201210237851 A CN201210237851 A CN 201210237851A CN 102785981 A CN102785981 A CN 102785981A
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Abstract
The invention relates to an overload protector for a construction elevator. The overload protector comprises a control host and two parallel weight sensors. The overload protector for the construction elevator is characterized in that the control host comprises a single chip microcomputer, an analog-to-digital converter and a real-time clock, wherein the single chip system contains a logic processor used for processing a digital signal and sending a control command; the analog-to-digital converter collects and converts a difference simulation signal transmitted from the weight sensor into a digital signal, and then the digital signal is transmitted to the single chip microcomputer; the real-time clock has a timing function; time information can be obtained from a real-time clock chip by the single chip microcomputer; after being averagely connected in parallel, the difference simulation signal of the weight sensor is transmitted to the analog-to-digital converter; and the logic processor arranged in the single chip microcomputer gives out a construction elevator starting and stopping command according to an operation result of the digital signal. The overload protector for the construction elevator has a series of advantages of reasonable structure, convenience in installation, simple debugging operation, reliability in work, high precision and the like. The main functions of the overload protector are real-time detection and practical load display. When the load exceeds the rated load of the overload protector by 110%, a sound and light alarm signal is given out after 3-second time delay, an alarm output relay acts, and a lifting control signal is cut off.
Description
Technical field
The present invention relates to a kind of construction lifter excess load protector.
Background technology
The principle of commercially available construction lifter excess load protector is to utilize the judgement that overloads of the analog signal of weight sensor, can only carry out the keying operation of elevator usually, exists following shortcoming with not enough:
Can't realize the real time recording that whether elevator operation transships and the real-time demonstration of actual load, simultaneously can't intuitive judgment whether since overload still because the elevator that maloperation causes is forced to stop, and can't debugging after installing and follow-up maintenance.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of building hoist load protector is provided, have rational in infrastructure, easy for installation, series of advantages such as debugging operations simple, reliable operation, precision height.Its radical function is to detect in real time and show actual load, and when load surpass its rated load 110% the time, after time-delay 3 seconds, send the sound and light alarm signal, the action of warning output relay, the cut-out control signal that hoists.
Concrete technical scheme of the present invention is:
The construction lifter excess load protector comprises the weight sensor of main control system and two parallel connections it is characterized in that this main control system comprises
Micro controller system: include the logic processor that is used for processing digital signal and sends control command,
A and D converter: the collection weight sensor passes the differential analog signal of coming and converts digital signal into, sends micro controller system then to,
Real-time clock: clocking capability, micro controller system can be from real-time timepiece chip acquisition time information;
After the differential analog signal parallel connection of said weight sensor is average, be transferred to A and D converter;
The logic processor of establishing in the said micro controller system sends building hoist according to the digital signal operation result and opens and closes instruction.
Said main control system comprises the peripheral hardware loading interface.
Said overload protection device also comprises charactron, buzzer phone and relay.
Said overload protection device also comprises LED lamp and 485 chips.
Said overload protection device comprises the pressure halt switch that is used to force to stop the operation of overload protection device.
Further, the positive terminal of said two weight sensors links to each other with rectifying circuit the parallel connection back with negative pole end separately, distinguishes the positive input terminal and the negative input end of connecting die number converter then.Traditional overload protection device; Generally be two weight sensors separately differential analog signal through average the conversion after; Be transferred to follow-up signal processing equipment such as comparator, this mode is equivalent to pass through three conversions, and systematic error is bigger; And can not carry out the adjustment and the modification of parameter, be unfavorable for control in real time and maintenance.This programme extremely is transferred to the conversion that A and D converter carries out differential analog signal after the parallel connection separately again with the positive and negative of two weight sensors, is equivalent to reduce twice computing, has reduced systematic error, helps setting and modification to system parameter simultaneously.
485 alleged chips adopt single power supply+5 V work, and rated current is 300 μ A, adopts the half duplex communication mode.It accomplishes the function that Transistor-Transistor Logic level is converted into the RS-485 level.The structure of 485 chips and pin are all very simple, and an actuator and receptor are contained in inside.
Overload protection device of the present invention also has the following advantages except These characteristics:
Volume is little, easy for installation
The peeling of one key, simple to operation
Password control function effectively prevents not have the parameter modification of mandate
Preserve the overload operation record
Abundant expanded function can external combined aural and visual alarm and weight telltale, can satisfy client's various demands.
Description of drawings
Fig. 1 is an overload protective device structural representation of the present invention.
Fig. 2 is an analog-digital converter circuit structural representation of the present invention.
Fig. 3 is the present invention's 485 chip circuit structural representations.
Fig. 4 is a structural representation of the present invention.
Wherein, housing 1, charactron 2, LED lamp 3, button 4, input end 5, sensor 6, sensor 7.
The specific embodiment
The construction lifter excess load protector; The weight sensor that comprises main control system and two parallel connections; This main control system comprises micro controller system: include the logic processor that is used for processing digital signal and sends control command, A and D converter: the collection weight sensor passes the differential analog signal of coming and converts digital signal into, sends micro controller system then to; Real-time clock: clocking capability, micro controller system can be from real-time timepiece chip acquisition time information; After the differential analog signal parallel connection of said weight sensor is average, be transferred to A and D converter; The logic processor of establishing in the said micro controller system sends building hoist according to the digital signal operation result and opens and closes instruction.
Main control system comprises the peripheral hardware loading interface.
Said overload protection device also comprises charactron, buzzer phone and relay.
Said overload protection device also comprises LED lamp and 485 chips.
Said overload protection device comprises the pressure halt switch that is used to force to stop the operation of overload protection device.
Further, the positive terminal of said two weight sensors links to each other with rectifying circuit the parallel connection back with negative pole end separately, distinguishes the positive input terminal and the negative input end of connecting die number converter then.
This programme load protector is correct to be installed and wiring errorless back energising.According to system explanation is set, accomplishes after the peeling setting, elevator can put into operation.
When load reached 1.90t, the early warning indicator lamp was lighted, and buzzer phone sends early warning sound.
When load arrives 2.20t, after the system delay 3 seconds, light warning indicator lamp, buzzer phone sends chimes of doom, and " output contact " can the change state, and elevator stops work.
When load drops to 2.20t when following, " output contact " returns to previous status, alarm release.
When load dropped to 1.90t, buzzer phone was closed, and early warning is removed.
Wherein, system's setting comprises
1, peeling (zeroing).
2, set rated weight.
3, set early warning load percentum.
4, set warning load percentum.
5, the calibration of weighing.
6, setting-up time.
Claims (6)
1. construction lifter excess load protector comprises the weight sensor of main control system and two parallel connections it is characterized in that this main control system comprises
Micro controller system: include the logic processor that is used for processing digital signal and sends control command,
A and D converter: the collection weight sensor passes the differential analog signal of coming and converts digital signal into, sends micro controller system then to,
Real-time clock: receive the weight sensor differential analog signal and make real-time record,
Be transferred to A and D converter after the differential analog signal parallel connection of said two weight sensors is average;
The logic processor of establishing in the said micro controller system sends building hoist according to the digital signal operation result and opens and closes instruction.
2. construction lifter excess load protector according to claim 1 is characterized in that said main control system comprises the peripheral hardware loading interface.
3. construction lifter excess load protector according to claim 1 is characterized in that said overload protection device also comprises charactron, buzzer phone and relay.
4. construction lifter excess load protector according to claim 1 is characterized in that said overload protection device also comprises LED lamp and 485 chips.
5. construction lifter excess load protector according to claim 1 is characterized in that said overload protection device comprises the pressure halt switch that is used to force to stop the operation of overload protection device.
6. construction lifter excess load protector according to claim 1 is characterized in that the positive terminal of said two weight sensors links to each other with rectifying circuit the parallel connection back with negative pole end separately, distinguishes the positive input terminal and the negative input end of connecting die number converter then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102378519A CN102785981A (en) | 2012-07-10 | 2012-07-10 | Overload protector for construction elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102378519A CN102785981A (en) | 2012-07-10 | 2012-07-10 | Overload protector for construction elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102785981A true CN102785981A (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102378519A Pending CN102785981A (en) | 2012-07-10 | 2012-07-10 | Overload protector for construction elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102785981A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523617A (en) * | 2013-10-21 | 2014-01-22 | 济南微控科技发展有限公司 | Micro-control wireless control device of building hoist |
| CN114590668A (en) * | 2022-05-10 | 2022-06-07 | 大汉科技股份有限公司 | Operation management system for unmanned elevator based on big data |
| CN118004847A (en) * | 2024-04-09 | 2024-05-10 | 洛阳九亿重工集团有限公司 | Control method and device for preventing car from running for mine hoist |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241137Y (en) * | 1996-01-16 | 1996-11-27 | 沈阳市技术监督情报研究所 | Intelligent load controller for elevator |
| CN2303821Y (en) * | 1997-02-27 | 1999-01-13 | 薛树森 | Intelligent elevator-load controlling instrument |
| CN2457103Y (en) * | 2001-01-02 | 2001-10-31 | 湖南省跃进机械厂 | Overload protection control system for overhead operated cradle |
| CN201686413U (en) * | 2010-06-04 | 2010-12-29 | 杨洪斌 | Tower crane safety monitoring and managing system |
| CN202829202U (en) * | 2012-07-10 | 2013-03-27 | 义乌华盟电器有限公司 | Building hoist overloading protection device |
-
2012
- 2012-07-10 CN CN2012102378519A patent/CN102785981A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2241137Y (en) * | 1996-01-16 | 1996-11-27 | 沈阳市技术监督情报研究所 | Intelligent load controller for elevator |
| CN2303821Y (en) * | 1997-02-27 | 1999-01-13 | 薛树森 | Intelligent elevator-load controlling instrument |
| CN2457103Y (en) * | 2001-01-02 | 2001-10-31 | 湖南省跃进机械厂 | Overload protection control system for overhead operated cradle |
| CN201686413U (en) * | 2010-06-04 | 2010-12-29 | 杨洪斌 | Tower crane safety monitoring and managing system |
| CN202829202U (en) * | 2012-07-10 | 2013-03-27 | 义乌华盟电器有限公司 | Building hoist overloading protection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523617A (en) * | 2013-10-21 | 2014-01-22 | 济南微控科技发展有限公司 | Micro-control wireless control device of building hoist |
| CN103523617B (en) * | 2013-10-21 | 2016-08-17 | 济南微控科技发展有限公司 | A kind of building hoist micro-control control device of wireless |
| CN114590668A (en) * | 2022-05-10 | 2022-06-07 | 大汉科技股份有限公司 | Operation management system for unmanned elevator based on big data |
| CN118004847A (en) * | 2024-04-09 | 2024-05-10 | 洛阳九亿重工集团有限公司 | Control method and device for preventing car from running for mine hoist |
| CN118004847B (en) * | 2024-04-09 | 2024-09-06 | 洛阳九亿重工集团有限公司 | Control method and device for preventing car from running for mine hoist |
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Application publication date: 20121121 |