CN103625998A - Light-load and high-speed control system and light-load and high-speed control method for construction hoist - Google Patents
Light-load and high-speed control system and light-load and high-speed control method for construction hoist Download PDFInfo
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- CN103625998A CN103625998A CN201310681138.8A CN201310681138A CN103625998A CN 103625998 A CN103625998 A CN 103625998A CN 201310681138 A CN201310681138 A CN 201310681138A CN 103625998 A CN103625998 A CN 103625998A
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Abstract
The invention relates to a construction hoist control technology and discloses a light-load and high-speed control system and a light-load and high-speed control method for a construction hoist. The light-load and high-speed control system and the light-load and high-speed control method for the construction hoist can be used for solving the problem that in the prior art, the security can be ensured by the same light-load speed and heavy-load speed of the construction hoist, but the working efficiency is low. When the construction hoist is required to operate at a high speed, a high-speed operating instruction is sent out by virtue of a light-load high-speed control button, a load limiter detects the current load state, if the current load state is a light-load state, a relay sends a control signal to a frequency converter, and the frequency converter controls a motor to operate at a high speed; if the current load state is a heavy-load state, the high-speed operating instruction is prevented, and the frequency converter controls the motor to operate at a rated speed.The light-load and high-speed control system and the light-load and high-speed control method are applicable to the control over the construction hoist.
Description
Technical field
The present invention relates to building hoist control technology, particularly building hoist underloading High-speed Control system and control method.
Background technology
Building hoist is used in a large number in current building site construction project under construction, is mainly used in the interior and exterior finishes of skyscraper, bridge construction etc., and convenient construction personnel floor is upper and lower, and transported material is the manned cargo-carrying construction machinery and equipment often using in building industry.The building hoist of current domestic use, facilitates reason for design, all by its payload ratings design maximum operational speed, all identical in its underloading and at full load running velocity.
Although building hoist all adopts identical running velocity easily to guarantee its safety in underloading and at full load, in design, easily realize; But inefficiency, power dissipation is serious.In fact in work progress, the work-hours of building hoist in heavy service is also few, fast development along with national economy, high-building construction project becomes main flow, requirement to building hoist speed is also more and more higher, if can be in the situation that not increasing existing building hoist power and cost, improve its running velocity under light condition, neither affect the safety of building hoist, can increase work efficiency again.
Summary of the invention
Technical matters to be solved by this invention is: propose a kind of building hoist underloading High-speed Control system and control method, although solve, the underloading speed of building hoist in conventional art is identical with heavily loaded speed can guarantee safety, however ineffective problem.
The present invention solves the problems of the technologies described above adopted technical scheme:
Building hoist underloading High-speed Control system, comprises underloading High-speed Control button, load limiter, relay and frequency converter;
Described underloading High-speed Control button is for providing the reception and registration of underloading High-speed Control instruction;
Described load limiter is for detection of judging whether current building hoist is light condition, if light condition is sent to relay by the instruction of underloading High-speed Control; If not light condition, blocks this underloading High-speed Control instruction;
Described relay for sending this instruction by make contact to frequency converter when receiving the instruction of underloading High-speed Control;
Described frequency converter is for realizing the regulation and control to motor rotation speed according to the control command receiving to motor output corresponding frequencies electric current.
Further, described underloading High-speed Control button is open type self-resetting button switch.
Further, described load limiter comprises Weighing module and normally closed contact switch, for the load on current elevator is weighed, if the weight of load does not surpass preset weight, be light condition, its normally closed contact switch is kept closed, and the instruction of underloading High-speed Control is sent to relay; If the weight of load surpasses preset weight, is not light condition, its normally closed contact switch disconnects, the instruction of blocking-up underloading High-speed Control.
In the present invention, described " at a high speed " is for the command speed of building hoist operation, is the running velocity higher than command speed, and its concrete numerical value can need to be set according to practice of construction.
In addition, another object of the present invention is also to propose a kind of corresponding building hoist underloading High-speed Control method, and it comprises the following steps:
A. when needs building hoist runs at high speed, by controlling platform, provide the instruction of underloading High-speed Control;
B. load limiter judges the load condition of current building hoist, if light condition is sent to relay by the instruction of underloading High-speed Control, enters step c; If not light condition, blocks this underloading High-speed Control instruction;
C. relay sends this instruction by make contact to frequency converter when receiving the instruction of underloading High-speed Control;
D. frequency converter is realized the regulation and control to motor rotation speed to motor output corresponding frequencies electric current when receiving this instruction.
Further, in step a, the described method that provides the instruction of underloading High-speed Control by controlling platform is: by pressing the underloading High-speed Control button of controlling on platform, provide the instruction of underloading High-speed Control.
Further, in step b, described light condition refers to that the weight of load does not surpass preset weight, if light condition, by keeping the closure state of its normally closed contact switch, the instruction of underloading High-speed Control is sent to relay, if not light condition is blocked the instruction of underloading High-speed Control by disconnecting its normally closed contact switch.
Further, in step b, also comprise: after this underloading High-speed Control instruction of blocking-up, building hoist moves with command speed.
Further, in steps d, described corresponding frequencies refers to be needed predefined corresponding to the frequency higher than specified running velocity according to practice of construction.
The invention has the beneficial effects as follows: when building hoist moves with light condition, improve its running velocity, to increase work efficiency, when moving with heavy condition, keep original specified running velocity, to ensure the safety of operation; In addition, the present invention improves few to original electric wiring, and simple in structure, the cost of increase is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control system embodiment in the present invention;
Fig. 2 is the workflow schematic diagram of control system of the present invention.
The specific embodiment
The present invention is intended to propose a kind of building hoist underloading High-speed Control system and control method, although solve, the underloading speed of building hoist in conventional art is identical with heavily loaded speed can guarantee safety, however ineffective problem.Its core concept is: when building hoist is in specified running velocity, while needing further raising speed with lifting work efficiency, by underloading High-speed Control button, send high-speed cruising instruction, by load limiter, detect the state when preload, if light condition transmits control signal to frequency converter by relay, Frequency Converter Control motor runs at high speed, if heavy condition, stop this high-speed cruising instruction, Frequency Converter Control motor still moves with command speed.
Below in conjunction with drawings and Examples, the solution of the present invention is done further to describe:
As shown in Figure 1, the building hoist underloading High-speed Control system in this example, comprises underloading High-speed Control button, frequency converter, load limiter and relay.On concrete enforcement, the electrical motor of building hoist is connected on frequency converter, by the speed-regulating function of frequency converter, controls motor operating speed.Underloading High-speed Control button is arranged on to be handled on control desk, and it adopts open type self-resetting button switch, and load limiter comprises Weighing module and normally closed contact switch, and the normally closed contact in its normally closed contact switch is connected with relay control coil.The open contact of relay is connected with " frequency 2 " of frequency converter.
As shown in Figure 2, the master controller on manipulation control desk is to gear 1 for the principle of work of this control system, and frequency converter obtains electric control motor with low cruise.Continue to handle master controller to gear 2, building hoist speed is promoted to command speed, while being the speed of frequency converter " frequency 1 " setting, if now expect higher running velocity, depress underloading High-speed Control button, its open contact is closed, if now load limiter is that underloading is not when (surpassing preset weight) to the weighing results of load, load limiter make contact is kept closed, relay coil obtains electric, relay contact closure, frequency converter frequency 2(high speed) entrance point obtains signal by the contact of relay closes, the frequency current that output is set is in advance to building hoist electrical motor, motor speed is brought up to corresponding frequency and is run at high speed, be that elevator moves with high speed gear, otherwise if load limiter is weight while carrying to the weighing results of load, its make contact disconnects, just relay can not obtain any signal, frequency converter can not obtain high-speed cruising signal, and electrical motor keeps specified running velocity constant.
The present invention has introduced building hoist by underloading theory at a high speed, has changed building hoist underloading and the synchronized phenomenon of heavy duty in the past, to improving traveling comfort and the production efficiency of construction operation, guarantees that working security has and important effect.
It should be noted that; the scope of protection of present invention comprises but is not limited only to above-described embodiment; those skilled in the art are according to being described in above equivalent modifications/replacement of in the situation that does not depart from Spirit Essence of the present invention, technology contents of the present invention being made, all within protection scope of the present invention.
Claims (8)
1. building hoist underloading High-speed Control system, is characterized in that, comprises underloading High-speed Control button, load limiter, relay and frequency converter;
Described underloading High-speed Control button is used for providing the instruction of underloading High-speed Control;
Described load limiter is for detection of judging whether current building hoist is light condition, if light condition is sent to relay by the instruction of underloading High-speed Control; If not light condition, blocks this underloading High-speed Control instruction;
Described relay for sending this instruction by make contact to frequency converter when receiving the instruction of underloading High-speed Control;
Described frequency converter is for realizing the regulation and control to motor rotation speed according to the control command receiving to motor output corresponding frequencies electric current.
2. building hoist underloading High-speed Control system as claimed in claim 1, is characterized in that, described underloading High-speed Control button is open type self-resetting button switch.
3. building hoist underloading High-speed Control system as claimed in claim 1 or 2, it is characterized in that, described load limiter comprises Weighing module and normally closed contact switch, for the load on current elevator is weighed, if the weight of load does not surpass preset weight, be light condition, its normally closed contact switch is kept closed, and the instruction of underloading High-speed Control is sent to relay; If the weight of load surpasses preset weight, is not light condition, its normally closed contact switch disconnects, the reception and registration of blocking-up underloading High-speed Control instruction.
4. building hoist underloading High-speed Control method, is characterized in that, comprises the following steps:
A. when needs building hoist runs at high speed, by controlling platform, provide the instruction of underloading High-speed Control;
B. load limiter judges the load condition of current building hoist, if light condition is sent to relay by the instruction of underloading High-speed Control, enters step c; If not light condition, blocks this underloading High-speed Control instruction;
C. relay sends this instruction by make contact to frequency converter when receiving the instruction of underloading High-speed Control;
D. frequency converter is realized the regulation and control to motor rotation speed to motor output corresponding frequencies electric current when receiving this instruction.
5. building hoist underloading High-speed Control method as claimed in claim 4, it is characterized in that, in step a, the described method that provides the instruction of underloading High-speed Control by controlling platform is: by pressing the underloading High-speed Control button of controlling on platform, provide the instruction of underloading High-speed Control.
6. building hoist underloading High-speed Control method as claimed in claim 4, it is characterized in that, in step b, described light condition refers to that the weight of load does not surpass preset weight, if light condition, by keeping the closure state of its normally closed contact switch, sends to relay by the instruction of underloading High-speed Control, if not light condition, blocks the instruction of underloading High-speed Control by disconnecting its normally closed contact switch.
7. building hoist underloading High-speed Control method as claimed in claim 6, is characterized in that, in step b, also comprises: after this underloading High-speed Control instruction of blocking-up, building hoist moves with command speed.
8. the building hoist underloading High-speed Control method as described in claim 4-7 any one, is characterized in that, in steps d, described corresponding frequencies refers to be needed predefined corresponding to the frequency higher than specified running velocity according to practice of construction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681138.8A CN103625998A (en) | 2013-12-12 | 2013-12-12 | Light-load and high-speed control system and light-load and high-speed control method for construction hoist |
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| CN201310681138.8A CN103625998A (en) | 2013-12-12 | 2013-12-12 | Light-load and high-speed control system and light-load and high-speed control method for construction hoist |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291184A (en) * | 2014-08-21 | 2015-01-21 | 四川金锋建设有限公司 | Elevator for construction site |
| CN106936363A (en) * | 2017-03-31 | 2017-07-07 | 上海源控自动化技术有限公司 | A kind of efficiency control device and energy efficiency controlling method |
| CN109573762A (en) * | 2018-12-21 | 2019-04-05 | 温州市长江建筑装饰工程有限公司 | A kind of intelligent-induction type building hoist |
| CN109657989A (en) * | 2018-12-20 | 2019-04-19 | 南京航空航天大学 | Helicopter high-speed overload input stage health state evaluation method |
| CN113479730A (en) * | 2021-07-14 | 2021-10-08 | 江苏中宝龙工程机械有限公司 | Construction elevator load detection method and frequency converter |
| CN113874315A (en) * | 2019-04-05 | 2021-12-31 | 奥斯克什公司 | Scissor lift load sensing system and method |
| US11820631B2 (en) | 2019-04-05 | 2023-11-21 | Oshkosh Corporation | Actuator failure detection and scissor lift load sensing systems and methods |
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| JP2004338891A (en) * | 2003-05-16 | 2004-12-02 | Toshiba Elevator Co Ltd | Elevator system |
| CN101397109A (en) * | 2008-10-10 | 2009-04-01 | 南通诺康电子有限公司 | Method for controlling elevator to regulate running speed according to system running loading |
| CN202464966U (en) * | 2011-12-15 | 2012-10-03 | 上海振华重工(集团)沈阳电梯有限公司 | Energy-saving high-efficient construction lifter |
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2013
- 2013-12-12 CN CN201310681138.8A patent/CN103625998A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004338891A (en) * | 2003-05-16 | 2004-12-02 | Toshiba Elevator Co Ltd | Elevator system |
| CN101397109A (en) * | 2008-10-10 | 2009-04-01 | 南通诺康电子有限公司 | Method for controlling elevator to regulate running speed according to system running loading |
| CN202464966U (en) * | 2011-12-15 | 2012-10-03 | 上海振华重工(集团)沈阳电梯有限公司 | Energy-saving high-efficient construction lifter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291184A (en) * | 2014-08-21 | 2015-01-21 | 四川金锋建设有限公司 | Elevator for construction site |
| CN106936363A (en) * | 2017-03-31 | 2017-07-07 | 上海源控自动化技术有限公司 | A kind of efficiency control device and energy efficiency controlling method |
| CN109657989A (en) * | 2018-12-20 | 2019-04-19 | 南京航空航天大学 | Helicopter high-speed overload input stage health state evaluation method |
| CN109573762A (en) * | 2018-12-21 | 2019-04-05 | 温州市长江建筑装饰工程有限公司 | A kind of intelligent-induction type building hoist |
| CN113874315A (en) * | 2019-04-05 | 2021-12-31 | 奥斯克什公司 | Scissor lift load sensing system and method |
| US11820631B2 (en) | 2019-04-05 | 2023-11-21 | Oshkosh Corporation | Actuator failure detection and scissor lift load sensing systems and methods |
| CN113874315B (en) * | 2019-04-05 | 2024-01-16 | 奥斯克什公司 | Scissor lift load sensing system and method |
| CN113479730A (en) * | 2021-07-14 | 2021-10-08 | 江苏中宝龙工程机械有限公司 | Construction elevator load detection method and frequency converter |
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Application publication date: 20140312 |