CN101898726B - Method for controlling hoisting height of cable crane hook not to exceed set limiting height automatically - Google Patents
Method for controlling hoisting height of cable crane hook not to exceed set limiting height automatically Download PDFInfo
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- CN101898726B CN101898726B CN2010102330205A CN201010233020A CN101898726B CN 101898726 B CN101898726 B CN 101898726B CN 2010102330205 A CN2010102330205 A CN 2010102330205A CN 201010233020 A CN201010233020 A CN 201010233020A CN 101898726 B CN101898726 B CN 101898726B
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Abstract
The invention discloses a method for controlling the hoisting height of a cable crane hook not to exceed a set limiting height automatically, which comprises the following steps that: 1, a crane motor for a cable crane winding engine is started to drive a hook to hoist upwards continuously; 2, when the hook does not exceed the set limiting height, a stroke switch is switched off under the action of counter weight hung on a swinging boom of the stroke switch to cut off a signal transmission loop of a wireless signal transmitter, and the crane motor drives the hook to continue hoisting upwards; and 3, when the hoisting height of the hook exceeds the set limiting height, a counter weight supporting plate supports the counter weight to close the stroke switch, the wireless signal transmission loop of the wireless signal transmitter is switched on and the wireless signal transmitter transmits a wireless signal outwards, after receiving the wireless signal, a radio signal receiver controls an alternating-current intermediate relay to operate and cut off a hoisting drive control sub-loop of the crane motor, so that the crane motor stops running and the hook stops hoisting. The method has the advantages of reasonable design, reliable action, simple and convenient operation, good using effect and high practical value.
Description
Technical field
The invention belongs to cable and hang hoisting depth automatic control technology field, especially relate to a kind of method of automatic guidance hoisting height of cable crane hook not to exceed set limiting height.
Background technology
Cable hang (being also referred to as cable crane) be a kind of with flexible steel wire rope as the built on stilts supporting member of big span, supply the load-carrying dolly on rope, to move, have the extraordinary elevator machinery of vertical transport and horizontal transportation function concurrently.Aspects such as cable is hung in that aqueduct sets up, bridge construction, harbour construction, forest industry, mining industry, dump loading and unloading and harbour carrying all are widely used.As elevator machinery, cable hangs the safety device that the automatic guidance hoisting height of cable crane hook not to exceed set limiting height also should be arranged.The span that cable hangs generally all has hundreds of rice (also having more than the km), and cable hang be with flexible steel wire rope as built on stilts supporting member, its lifting winch is not installed on the load-carrying dolly that moves on the flexible steel wire rope.If cable hangs the automatic guidance hook height that adopts overhead and gantry cranes and car hosit to use and is no more than the method for setting limiting altitude, the flexible steel wire rope that is used to hang control cable of hundred meters of radicals (even more than a km) span will be set.But, because trail drag force is big, can causes the situation of dragging motionless cable even breaking cable to take place, and be uneconomic at the dilatory cable of the scope of hundreds of rice (even more than a km).Therefore, be necessary to adopt the method for transmission over radio control signal to realize the automatic guidance hoisting height of cable crane hook not to exceed set limiting height.
Summary of the invention
Technical matters to be solved by this invention is to above-mentioned deficiency of the prior art, and the method for a kind of reasonable in design, reliable in action, use is easy and simple to handle and result of use is good automatic guidance hoisting height of cable crane hook not to exceed set limiting height is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of method of automatic guidance hoisting height of cable crane hook not to exceed set limiting height is characterized in that this method may further comprise the steps:
When step 2, suspension hook do not surpass the limiting altitude of setting; Travel switch is in off-state under the action of gravity of the counterweight that hangs on its pivoted arm; Corresponding signal launching circuit with wireless signal transmitter cuts off; This moment, the protector signal transmitter did not externally send wireless signal, and crane and hoist type motor drives suspension hook to be continued upwards to promote;
Wireless signal transmitter in the above-mentioned steps one and travel switch are formed the protector signal transmitter; Receiver described in the step 3 and AC intermediate relay are formed this machine of protector.
The present invention compared with prior art has the following advantages:
1, used this machine of protector and protector signal transmitter is simple in structure and reasonable in design, reliable in action.
2, cost is low, installation, debugging and easy to maintenance.
3, loss is few, and operating costs is low.
4, use is easy and simple to handle; Degree of automation height and result of use are good, practical value is high; Be that an ability volitional check cable hangs isolated plant and the volitional check method that hook height surpass to be set end position, protector has hoisting depth when the cable suspension hook and surpasses to cut the painter automatically when setting end position and hang the lifting winch motor circuit and make the cable suspension hook stop to promote but do not influence the cable suspension hook and descend and send alerting signal prompting operation driver simultaneously and stop the function that the cable suspension hook promotes operation.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 hangs the circuit block diagram of hoisting depth end position protector for the used cable of the present invention.
Fig. 2 is the installation site scheme drawing of the used wireless signal transmitter of the present invention.
Fig. 3 by the present invention the schematic circuit diagram of control crane and hoist type motor.
Fig. 4 is a method flow diagram of the present invention.
Description of reference numerals:
This machine of 1-protector; The 1-1-radio signal receiver; The 1-2-AC intermediate relay;
The 1-3-Alarm Unit; 2-protector signal transmitter; The 2-1-wireless signal transmitter;
The 2-2-travel switch; The 2-21-counterweight is used stay cord; The 2-22-counterweight;
The 3-cable hangs the load-carrying dolly; The 4-suspension hook; 5-counterweight supporting plate;
The 6-crane and hoist type motor; The 7-track cable; The 8-hoisting line;
The 9-drg.
The specific embodiment
Like Fig. 1, Fig. 2 and shown in Figure 4, the method for automatic guidance hoisting height of cable crane hook not to exceed set limiting height of the present invention may further comprise the steps:
When step 2, suspension hook 4 do not surpass the limiting altitude of setting; Travel switch 2-2 is in off-state under the action of gravity of the counterweight 2-22 that hangs on its pivoted arm; Corresponding signal launching circuit with wireless signal transmitter 2-1 cuts off; Protector signal transmitter 2 does not externally send wireless signal at this moment, and crane and hoist type motor 6 drives suspension hooks 4 to be continued upwards to promote.
Wireless signal transmitter 2-1 in the step 1 and travel switch 2-2 form protector signal transmitter 2; Receiver 1-1 described in the step 3 and AC intermediate relay 1-2 form this machine of protector 1.Said counterweight 2-22 is suspended on through stay cord 2-21 on the pivoted arm of travel switch 2-2, and counterweight supporting plate 5 is positioned under the counterweight 2-22.The weight of said counterweight 2-22 is greater than the retracing spring power of travel switch 2-2 pivoted arm; The hoisting speed that suspension hook 4 and cable hung distance+(3～5) second * suspension hook 4 of 3 in load-carrying dolly when length=suspension hook 4 of counterweight stay cord 2-21 rose to the setting end position, the hoisting speed unit of suspension hook 4 is m/s.The normally closed contact J of said AC intermediate relay 1-2 is serially connected in and promotes cable and hang in the lifting drive controlling branch loop with the crane and hoist type motor 6 of winch.Simultaneously, also comprise the Alarm Unit 1-3 that is controlled by radio signal receiver 1-1, said Alarm Unit 1-3 and radio signal receiver 1-1 join.Said travel switch 2-2 is installed in cable and hangs load-carrying dolly 3 middle parts, and this machine of protector 1 is installed in the lifting cable and hangs controling in the machine room with winch.Said Alarm Unit 1-3 is an acousto-optic warning unit.In the actual mechanical process, said cable hang load-carrying dolly 3 to be installed in up and down two cables be track cable 7 with hoisting line 8 on.Said protector signal transmitter 2 is wanted supporting use with this machine of protector 1, i.e. the wireless signal that this machine of protector 1 is merely able to receive a corresponding protector signal transmitter 2 emissions.
In conjunction with Fig. 3, the control loop of the drive controlling loop of said crane and hoist type motor 6 for controlling by cam controller.Particularly, the three phase supply power supply is connected on the power end of crane and hoist type motor 6 behind three relay K 1, K2 and K 3 and the cam controllers through circuit breaker K.Be connected to the drg 9 that crane and hoist type motor 6 is braked in the three phase supply loop of said crane and hoist type motor 6.
In the actual lifting process, after the energized, radio signal receiver 1-1 starts and is in open state all the time, can receive at any time to be installed in cable and to hang the wireless signal transmitter 2-1 institute emitted radio signal on the load-carrying dolly 3.And radio signal receiver 1-1 can receive the radio signal that has the same frequency spectrum characteristic with wireless signal transmitter 2-1 emitted radio signal.Said radio signal receiver 1-1 exports its power gain that receives radio signal to the power that is enough to drive AC intermediate relay 1-2.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (2)
1. the method for an automatic guidance hoisting height of cable crane hook not to exceed set limiting height is characterized in that this method may further comprise the steps:
Step 1, wireless signal transmitter (2-1) is installed in cable hangs that load-carrying dolly (3) is gone up and serial connection one stroke switch (2-2) in the signal launching circuit of wireless signal transmitter (2-1); Simultaneously on the pivoted arm of travel switch (2-2) suspension one counterweight (2-22) and suspension hook (4) go up install one with counterweight (2-22) over against counterweight supporting plate (5); Connect cable afterwards and hang the power switch K of winch, drive the lasting upwards lifting of suspension hook (4) that cable hangs through crane and hoist type motor (6) with crane and hoist type motor (6); The weight of said counterweight (2-22) is greater than the retracing spring power of travel switch (2-2) pivoted arm;
When step 2, suspension hook (4) do not surpass the limiting altitude of setting; Travel switch (2-2) on its pivoted arm be in off-state under the action of gravity of the counterweight that hangs (2-22); Corresponding signal launching circuit with wireless signal transmitter (2-1) cuts off; Protector signal transmitter this moment (2) does not externally send wireless signal, and crane and hoist type motor (6) drives suspension hook (4) to be continued upwards to promote;
Step 3, when the hoisting depth of suspension hook (4) surpasses the limiting altitude of setting; Counterweight supporting plate (5) upwards holds up counterweight (2-22) and makes the pivoted arm of travel switch (2-2) lose the action of gravity and the respective closed of counterweight (2-22); Then connect the wireless signal transmission loop of wireless signal transmitter (2-1), wireless signal transmitter this moment (2-1) externally sends wireless signal; Meanwhile; After the radio signal receiver (1-1) identical with wireless signal transmitter (2-1) frequency of operation receives this wireless signal; Control is serially connected in crane and hoist type motor (6) and promotes AC intermediate relay (1-2) action in the drive controlling branch loop; Divide the loop to cut off the lifting drive controlling of crane and hoist type motor (6), make crane and hoist type motor (6) stop operating, suspension hook (4) stops to promote; At this moment, the decline drive controlling branch loop of crane and hoist type motor (6) still is in on-state, and changing after the turning to of crane and hoist type motor (6) then can be through crane and hoist type motor (6) driving suspension hook (4) operation that descends.
2. according to the method for the described a kind of automatic guidance hoisting height of cable crane hook not to exceed set limiting height of claim 1, it is characterized in that: wireless signal transmitter in the step 1 (2-1) and travel switch (2-2) are formed protector signal transmitter (2); Receiver described in the step 3 (1-1) and AC intermediate relay (1-2) are formed this machine of protector (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102330205A CN101898726B (en) | 2010-07-20 | 2010-07-20 | Method for controlling hoisting height of cable crane hook not to exceed set limiting height automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102330205A CN101898726B (en) | 2010-07-20 | 2010-07-20 | Method for controlling hoisting height of cable crane hook not to exceed set limiting height automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101898726A CN101898726A (en) | 2010-12-01 |
| CN101898726B true CN101898726B (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102330205A Active CN101898726B (en) | 2010-07-20 | 2010-07-20 | Method for controlling hoisting height of cable crane hook not to exceed set limiting height automatically |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003026390A (en) * | 2001-07-13 | 2003-01-29 | Tadano Ltd | Hoisting load horizontal movement control device of crane |
| CN2811251Y (en) * | 2005-04-04 | 2006-08-30 | 于磊 | Overwinding alarming and stopping device |
| CN201280392Y (en) * | 2008-08-05 | 2009-07-29 | 交通部水运科学研究所 | Ultra-high locating protection device |
| CN101590980B (en) * | 2009-06-11 | 2011-05-18 | 中国海洋大学 | Container spreader height real-time display guidance device |
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2010
- 2010-07-20 CN CN2010102330205A patent/CN101898726B/en active Active
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| CN101898726A (en) | 2010-12-01 |
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