CN201501743U - Control device for crane anti-skid hook - Google Patents
Control device for crane anti-skid hook Download PDFInfo
- Publication number
- CN201501743U CN201501743U CN2009202098225U CN200920209822U CN201501743U CN 201501743 U CN201501743 U CN 201501743U CN 2009202098225 U CN2009202098225 U CN 2009202098225U CN 200920209822 U CN200920209822 U CN 200920209822U CN 201501743 U CN201501743 U CN 201501743U
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- hook
- control
- contact
- time relay
- crane
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Abstract
A control device for a crane anti-skid hook is characterized in that a power start button and a main contactor are connected between the two ends of a control power supply in series; a time relay is arranged and is connected with the two ends of the control power supply; and an auxiliary contact is connected between the power start button and the main contactor in series. The time relay is electrified by the mutual control of the normally closed contact of a master controller for the lift of the crane, and the auxiliary normally open contact of a brake control contactor. The utility model is simple, economic and effective, when the lifting hook is out of control caused by the brake electricity when in the lifting of heavy goods, the hook can automatically brake to prevent fall hazard, so the utility model has important practical significance for safety in production, and can be applied to the field of the crane anti-skid hook.
Description
Technical field
The utility model relates to the anti-control field that slips of suspension hook, and it is electric when malfunctioning because of drg to relate in particular to a kind of suspension hook that is applied to overhead traveling crane or hoisting crane, can prevent that weight is because of slipping the hook dangerous device that falls.
Background technology
At present, the hoisting arm expansion of traditional telescopic boom hoisting crane and hook lifting are two independently actions, are controlled respectively by two systems.When carrying out hoisting arm expansion separately, because not motion of elevator, rope capacity is fixed, so along with the stretching out or withdraw of arm, suspension hook is lifting thereupon.And the hook lifting system of the hoisting crane under the prior art divides analog quantity and digital quantity to control two kinds, but no matter which kind of is, suspension hook uses drg by circuit breaker and contactor control.Its principle of work and flow process are as follows:
1. three phase mains is by main breaker, delivers on the main contact of the total contactless switch of hoisting crane pile crown and waits for instruction.
2. send electricity to prepare when hoisting crane will move, promptly the crane operation personnel press the power initiation button, and total contactless coil gets electric adhesive, and is specific as follows:
1. the closed self-insurance of secondary contact;
2. main contact closure, three phase mains is delivered to the suspension hook control device of electric motor by pile crown under total main noddle on contactor.
3. drg circuit breaker and drg are waited for pile crown on the main contact of contactless switch.
4. hook lifting operation, i.e. crane driver operation hook lifting leaves zero-bit with the master controller handle, and control setup obtains instruction, at this moment:
1. electronic switch closes.
2. drg is controlled the inner contact instruction adhesive of device with contactless switch, the main contact closure, and drg gets electric opening, and the electrical motor operation drives the operation of reel and hook lifting.
It more than is the braking control system of the suspension hook operation under the prior art.
But in actual the use, tend to occur dangerous situation:
When drg with the main contact of contactless switch because improper closure, cling or when outage is opened again temporarily as contact, have and make suspension hook because of the weight danger of gliding under the following state:
1. the driver is as long as press the power initiation button before the hoisting crane operation, and total contactless coil gets electric adhesive, drg because of the main contact of contactless switch closed electric opening, the suspension hook downslide.
2. in the suspension hook operational process, get back to zero-bit when the driver operation hook lifting with the master controller handle, device loses instruction, and electrical motor shuts down, and the main contact closure of contactless switch makes drg get electric can't closing, and suspension hook glides.
The downslide that above-mentioned two kinds of suspension hooks slide hook causes very easily causes serious accident.
Though in order to address this problem, used under the prior art:
1. manually by emergency stop push button total contactless switch that cuts off the power supply, make drg dead electricity closure;
2. use anti-the slide to hook heavy-duty machine.
But first method need be judged the problem place fast owing to the operator, and must take operation at once, has just caused safety misadventure and often have little time reaction in the reality; It is because of electric motor starting moment is little that second method also can only solve, and the anti-slide hook that weight is descended when lifting is not to relate to the slide hook phenomenon that causes because of the electric reason of drg.
In sum, the power supply that needs earlier a kind of actv. to be used to disconnect the crane hook drg makes its automatic band-type brake, prevents the dangerous device that drops, and this device needs easy economy, and the maintaining maintenance is convenient.
The utility model content
In order to address the above problem, the utility model provides a kind of crane hook the anti-hook control setup that slips, and adopts to install the anti-slide hook that device that a slug relay and inside is provided with some systems contact is realized crane hook additional.The utility model is specific as follows described:
The anti-hook control setup that slips of a kind of crane hook, comprise power initiation button and total contactless switch, it is characterized in that: described power initiation button and total contactless switch are serially connected between the control both ends of power, one time relay is set, this time relay also is connected with the control both ends of power, and its secondary contact are serially connected between power initiation button and the total contactless switch.
According to the anti-hook control setup that slips of crane hook of the present utility model, it is characterized in that described time relay is connected with the control both ends of power with the zero-bit normally closed contact of master controller and the auxiliary open contact of drg control contactor through hook lifting.
According to the anti-hook control setup that slips of crane hook of the present utility model, it is characterized in that the secondary contact of described time relay are specially the auxiliary normally closed contact of a time-delay, this contact is serially connected between power initiation button and the total contactless switch.
According to the anti-hook control setup that slips of crane hook of the present utility model, it is characterized in that described time relay is the electron type time relay.
According to the anti-hook control setup that slips of crane hook of the present utility model, it is characterized in that leaving zero-bit when described operating handle, when hook lifting uses the zero-bit normally closed contact of master controller to disconnect, perhaps, get at the drg control contactor, when its auxiliary open contact disconnected, described time relay must not be electric, and its secondary contact that are serially connected between power initiation button and the total contactless switch are in closure state.
According to the anti-hook control setup that slips of crane hook of the present utility model, it is characterized in that when described operating handle during in zero-bit, if the drg control contactor is in improper attracting state, described time relay promptly gets, its secondary contact that are serially connected between power initiation button and the total contactless switch are in the time-delay off-state, cut off the electric power loop of total contactless switch.
Use the anti-hook that slips of crane hook of the present utility model to obtain following beneficial effect with control setup:
1. use the anti-hook that slips of crane hook of the present utility model can solve hoisting crane in heavy hook lifting process, because of the problem out of control of the electric aspect of drg with control setup.
2. use the anti-hook that slips of crane hook of the present utility model can solve hoisting crane in heavy hook lifting process with control setup, the problem that drg is closed voluntarily.
3. use the anti-hook that slips of crane hook of the present utility model can solve hoisting crane in heavy hook lifting process with control setup, suspension hook stops the problem of lifting operation.
Description of drawings
Fig. 1 is a hanger system power circuit scheme drawing;
Fig. 2 inhales for total contactless switch puts the control circuit scheme drawing;
Fig. 3 is drg control contactor circuit scheme drawing;
Fig. 4 is the anti-scheme drawing of hook with control setup that slip of crane hook of the present utility model;
Fig. 5 is a scheme implementation circuit diagram of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the anti-hook that slips of crane hook of the present utility model is described further with control setup.
Hanger system power circuit scheme drawing as shown in Figure 1, before hoisting crane send electricity, main breaker 1, drg circuit breaker 4 closures; Electronic switch 3.1 in the main contact 2.1 of total contactless switch 2, the main contact 5.1 of drg control contactor 5, the control setup 3 disconnects; Hook lifting uses master controller 7 in zero-bit; Electrical motor 10 stalls; Drg 11 closures; Reel and suspension hook 12 stalls.
Hoisting crane send electricity, main contact 2.1 closures of main breaker 1, drg circuit breaker 4, total contactless switch 2; Electronic switch in the main contact 5.1 of drg control contactor 5, the control setup 3 disconnects; Hook lifting uses master controller 7 in zero-bit; Electrical motor 10 stalls; Drg 11 closures; Reel and suspension hook 12 stalls.
The crane hook lifting operation, the electronic switch closes in the main contact 2.1 of main breaker 1, drg circuit breaker 4, total contactless switch 2, the main contact 5.1 of drg control contactor 5, the control setup 3; Hook lifting leaves zero-bit with master controller 7; Electrical motor 10 runnings; Drg 11 is opened; Reel rotation and suspension hook 12 move up and down.
Total contactless switch is as shown in Figure 2 inhaled and is put the control circuit scheme drawing, and crane driver is pressed power initiation button 8, and total contactless switch 2 coils get electric adhesive, wherein: 1. secondary contact 2.2 closed self-insurances;
2. main contact 2.1 closed (see figure 1)s.
Crane driver is pressed emergency stop push button 9, and total contactless switch 2 coil losing electricities disconnect, wherein:
1. secondary contact 2.2 disconnect;
2. main contact 2.1 disconnects (see figure 1).
Drg control contactor circuit scheme drawing as shown in Figure 3, control setup 3 operation in a single day, inner brake command contact 3.2 closures make drg control contactor 5 coils get electric adhesive, and drg 11 gets electric opening.
Embodiment
As shown in Figure 4, install the anti-hook control setup that slips of crane hook of the present utility model additional.
Hook lifting connect with the auxiliary open contact 5.2 of drg control contactor 5 with the zero-bit normally closed contact 7.1 of master controller 7 and control increases time relay 6 newly, and time relay 6 must be electric be checked and balance with the zero-bit normally closed contact 7.1 of the master controller 7 auxiliary open contact 5.2 with drg control contactor 5 by hook lifting.When being the lifting of suspension hook need, handle leaves zero-bit, and its normally closed contact 7.1 disconnects, auxiliary open contact 5.2 closures of drg control contactor 5, and time relay 6 must not; Otherwise suspension hook will stop, and handle is got back to zero-bit, its normally closed contact 7.1 closures, and the auxiliary open contact 5.2 of drg control contactor 5 is opened, and time relay 6 also must not be electric, main contactor 2 do not started to control to make use.(referring to following Fig. 5).
The anti-enforcement circuit diagram of hook that slip of crane hook of the present utility model with concrete effect this scheme of use as shown in Figure 5 of control setup, in the circuit of (Fig. 1), the auxiliary normally closed contact 6.1 of the time-delay of the serial connection one secondary time relay 6 that increases newly is used to control total contactless switch 2 outages of hoisting crane.If suspension hook drg control contactor 5 because of the improper adhesive of certain reason, in following two kinds of situations, all can avoid heavy hook tenesmus dangerous.The circuit concrete analysis:
1. working as hoisting crane send:
Crane driver is pressed power initiation button 8, (see figure 4): this moment, handle was in zero-bit, its normally closed contact 7.1 closures, owing to drg control contactor 5 because of the improper adhesive of certain reason, as the contact interlock, its auxiliary open contact 5.2 is also closed, newly-increased time relay 6 electric adhesive, its secondary contact 6.1 time-delays disconnect also and keeping, total contactless switch 2 coils must not electric (see figure 5), its main contact 2.1 is in off-state, and drg 11 is in closed condition because of non-transformer.
2. in the hook lifting operational process, need stop:
This moment, handle was got back to zero-bit, its normally closed contact 7.1 closures, owing to drg control contactor 5 because of the improper adhesive of certain reason, do not disconnect as the brake command contact 3.2 in the controller 3, make drg control contactor 5 coils get electric adhesive (see figure 3), its auxiliary open contact 5.2 is also closed, newly-increased time relay 6 gets electric adhesive, its secondary contact 6.1 time-delays disconnect and keep, total contactless switch 2 coil losing electricity (see figure 5)s, its main contact 2.1 disconnects, and drg 11 also is in closed condition because of non-transformer.
The anti-hook control setup that slips of crane hook of the present utility model, easy, economical, effective, when suspension hook in weight lifting operational process, because of drg electric when malfunctioning, automatic band-type brake, prevent the danger of falling, safety in production is had important and practical meanings, applicable all crane gliding-proof hook fields.
Claims (6)
1. a crane hook is prevented slide hook control setup, comprise power initiation button (8) and total contactless switch (2), it is characterized in that: described power initiation button and total contactless switch are serially connected between the control both ends of power, one time relay (6) is set, this time relay also is connected with the control both ends of power, and its secondary contact (6.1) are serially connected between power initiation button and the total contactless switch.
2. according to the anti-hook control setup that slips of the described crane hook of claim 1, it is characterized in that described time relay (6) is connected with the control both ends of power with the zero-bit normally closed contact (7.1) of master controller (7) and the auxiliary open contact (5.2) of drg control contactor (5) through hook lifting.
3. according to the anti-hook control setup that slips of the described crane hook of claim 1, the secondary contact (6.1) that it is characterized in that described time relay (6) are specially the auxiliary normally closed contact of a time-delay, and this contact is serially connected between power initiation button (8) and the total contactless switch (2).
4. according to the anti-hook control setup that slips of the described crane hook of claim 1, it is characterized in that described time relay (6) is the electron type time relay.
5. according to claim 1, the anti-hook control setup that slips of 2 or 3 described crane hooks, it is characterized in that leaving zero-bit when described operating handle, when hook lifting uses the zero-bit normally closed contact (7.1) of master controller (7) to disconnect, perhaps, get at drg control contactor (5), when its auxiliary open contact (5.2) disconnected, described time relay (6) must not be electric, and its secondary contact (6.1) that are serially connected between power initiation button (8) and the total contactless switch (2) are in closure state.
6. according to claim 1, the anti-hook control setup that slips of 2 or 3 described crane hooks, it is characterized in that when described operating handle during in zero-bit, if drg control contactor (5) is in improper attracting state, described time relay (6) promptly gets, its secondary contact (6.1) that are serially connected between power initiation button (8) and the total contactless switch (2) are in the time-delay off-state, cut off the electric power loop of total contactless switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202098225U CN201501743U (en) | 2009-09-21 | 2009-09-21 | Control device for crane anti-skid hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202098225U CN201501743U (en) | 2009-09-21 | 2009-09-21 | Control device for crane anti-skid hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201501743U true CN201501743U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202098225U Expired - Fee Related CN201501743U (en) | 2009-09-21 | 2009-09-21 | Control device for crane anti-skid hook |
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|---|---|
| CN (1) | CN201501743U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324112A (en) * | 2013-07-05 | 2013-09-25 | 中国地质大学（武汉） | Control method of free fall optimal braking time point of heavy hook |
| CN103663225A (en) * | 2013-12-04 | 2014-03-26 | 中联重科股份有限公司 | Brake failure protection method, device and system and crane |
| CN105417388A (en) * | 2015-12-01 | 2016-03-23 | 武汉计算机外部设备研究所 | System and device for excitation-loss and power-loss protection of crane |
| CN105621260A (en) * | 2016-03-15 | 2016-06-01 | 山东钢铁股份有限公司 | Safety device capable of automatically transmitting power after unexpected power loss of crown block |
| CN111392605A (en) * | 2020-03-06 | 2020-07-10 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
-
2009
- 2009-09-21 CN CN2009202098225U patent/CN201501743U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324112A (en) * | 2013-07-05 | 2013-09-25 | 中国地质大学（武汉） | Control method of free fall optimal braking time point of heavy hook |
| CN103324112B (en) * | 2013-07-05 | 2015-03-18 | 中国地质大学（武汉） | Control method of free fall optimal braking time point of heavy hook |
| CN103663225A (en) * | 2013-12-04 | 2014-03-26 | 中联重科股份有限公司 | Brake failure protection method, device and system and crane |
| CN103663225B (en) * | 2013-12-04 | 2016-01-27 | 中联重科股份有限公司 | The protection system of misfunctioning of brake and hoisting crane |
| CN105417388A (en) * | 2015-12-01 | 2016-03-23 | 武汉计算机外部设备研究所 | System and device for excitation-loss and power-loss protection of crane |
| CN105621260A (en) * | 2016-03-15 | 2016-06-01 | 山东钢铁股份有限公司 | Safety device capable of automatically transmitting power after unexpected power loss of crown block |
| CN111392605A (en) * | 2020-03-06 | 2020-07-10 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| CN111392605B (en) * | 2020-03-06 | 2021-09-28 | 杭州国电大力机电工程有限公司 | Control method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |