CN201753235U - Quayside container crane - Google Patents
Quayside container crane Download PDFInfo
- Publication number
- CN201753235U CN201753235U CN2010205062073U CN201020506207U CN201753235U CN 201753235 U CN201753235 U CN 201753235U CN 2010205062073 U CN2010205062073 U CN 2010205062073U CN 201020506207 U CN201020506207 U CN 201020506207U CN 201753235 U CN201753235 U CN 201753235U
- Authority
- CN
- China
- Prior art keywords
- suspender
- maintenance
- container crane
- quayside container
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a quayside container crane, which comprises a controller and an elevating system for driving a suspender to elevate. The crane is further provided with a maintenance-mode selector switch whose one end is connected with the power supply. The other end of the selector switch is connected with one I/O port of the controller which generates a control signal for forbidding or permitting the elevating system to operate on the basis of the I/O port high-level or low-level state. Then the signal is sent to the control unit of the elevating system. The utility model, by improving the electric control of the prior quayside container crane and adding the maintenance-mode selector switch, can control the crane to be switched into a suspender maintenance mode by operating when a maintenance staff is in need of performing maintenance on the suspender and then forbid the elevating system to operate. Therefore, the maintenance staff in the bottom of the suspender is ensured not to suffer a crane driver misoperation when performing maintenance on the suspender. Safety maintenance is thus guaranteed.
Description
Technical field
The utility model belongs to the quayside container crane technical field, specifically, relates to a kind of for improving the custom-designed a kind of control circuit of suspender maintenance safety of quayside container crane.
Background technology
At present, in the container handling operation of port and pier, quayside container crane (also can abbreviate bridge crane as) is being brought into play crucial effects, utilizes the suspender of bridge crane can grasp freight container like a cork and finishes shipment or ship-discharging operation.Existing quayside container crane, its suspender is checked, in adjustment or the maintenance process, sometimes the personnel of needing repairing stand in and carry out operation below the suspender, when observing the situations such as spacing state of suspender such as needs, and this moment can not the closing control power supply, therefore will exist owing to driver's maloperation causes suspender decline, thereby cause the danger of maintainer's injures and deaths.
In the design of original bridge crane operating mode, not at maintainer's safety and custom-designed safety method, this has buried potential safety hazard just for the suspender maintenance of quayside container crane.
The utility model content
When the utility model overhauls suspender in order to solve the bridge crane maintainer in the suspender bottom, need face because driver's maloperation causes suspender to descend and the problem of initiation potential, proposed a kind of quayside container crane, improved the safety of suspender upkeep operation with suspender maintenance safety pattern.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of quayside container crane comprises controller and the lifting mechanism that is used to drive the suspender lifting; Also be provided with the maintenance mode select switch on described hoisting crane, an end of described select switch connects power supply, and the other end connects wherein one road I/O mouth of controller; Described controller produces the control signal of forbidding or allowing the lifting mechanism operation according to the high-low level state of this road I/O mouth, transfers to the control unit of lifting mechanism.
Preferably, described maintenance mode select switch preferably is arranged on the ground cart active station of hoisting crane, so that the suspender maintainer controls.
Further, in the control unit of described lifting mechanism, comprise an AC contactor, the coil of described AC contactor is connected between other one road I/O mouth of power supply and controller, and the normally open contact of AC contactor is connected in the current supply circuit of lifting motor in the lifting mechanism.
Further again, normally open contact one end of described AC contactor connects three-phase alternating-current supply, and the other end connects positive and reverse rotation control circuit, and connects the terminals for power supplies of lifting motor by positive and reverse rotation control circuit.
Preferably, described controller is the automatically controlled part existing P of a quayside container crane LC programmable logic controller (PLC).
Further again, described power supply is+the 24V direct supply.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by improving the automatically controlled part of existing quayside container crane, increase the maintenance mode select switch, when the maintainer need overhaul suspender, can control bridge crane by operating selection switch and enter suspender maintenance safety mode, and then forbid that lifting mechanism moves, when guaranteeing that the maintainer is engaged in upkeep operation in the suspender bottom, can not come to harm, thereby the safety that has guaranteed maintenance activity is carried out because of bridge crane driver misoperation.
After reading the detailed description of the utility model embodiment in conjunction with the accompanying drawings, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is that the automatically controlled part of the quayside container crane that proposes of the utility model is improved schematic circuit diagram;
Fig. 2 is for realizing the diagram of circuit of the software approach that the maintenance safety mode increases.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
Embodiment one, present embodiment is in order to ensure the personal safety of bridge crane maintainer when carrying out the suspender upkeep operation, on the basis of existing quayside container crane, increase safe operating mode design, promptly increase the maintenance mode select switch by automatically controlled part at bridge crane, when the maintainer need overhaul suspender, only need select switch is allocated to maintenance mode, can forbid the operation of lifting mechanism in the bridge crane, thereby avoid the accident of suspender decline jeopardizing suspender bottom maintainer's life security to take place.
Maintainer's operating selection switch voluntarily for convenience, really to guarantee to keep in repair safety, present embodiment preferably is arranged on described maintenance mode select switch on the ground cart active station of hoisting crane, such as being arranged in the lump on the control panel of ground cart active station with master cocies such as cart left lateral, cart right laterals, by maintainer's local operation, safe and reliable.
Forbid that by operating maintenance Pattern Select Switch control lifting mechanism the implementation of moving can adopt two kinds of designs of hardware and software, sets forth respectively two kinds of designs below.
For the hardware design mode, can be at the automatically controlled part increase hardware circuit as shown in Figure 1 of quayside container crane.The end of maintenance mode select switch S3 is connected power supply, and such as the direct supply of+24V, the other end connects wherein one road I/O mouth of controller, such as IO1.Described controller can directly adopt the original PLC programmable logic controller (PLC) of the automatically controlled part of hoisting crane to realize.When the maintainer is allocated to maintenance mode with select switch S3, select switch S3 closure, after PLC receives the high level signal of its IO1 mouth input, judge and enter maintenance mode, and then by its other one road I/O mouth (such as IO2) output high level signal, such as the vdc of output+24V, export the control unit of lifting mechanism to, to forbid the lifting mechanism operation.Specifically, AC contactor JK1 can be set in the control unit of lifting mechanism, the coil of AC contactor JK1 is connected on+direct supply of 24V and the IO2 mouth of PLC between, the normally open contact of AC contactor JK1 is connected in the current supply circuit of lifting motor M in the lifting mechanism, as shown in Figure 1.When PLC exports high level signal by its IO2 mouth, owing to do not have electric current to flow through in the coil of AC contactor JK1 at this moment, therefore, its normally open contact disconnects, cut off the power supply of three-phase alternating-current supply AC to lifting motor M, control lifting motor M shuts down, to reach the design goal of forbidding the lifting mechanism operation.
And when the maintainer switched to mode of operation with select switch S3, select switch S3 disconnected, and made the IO1 mouth of PLC be low level state.This moment, the PLC judgement entered normal mode of operation, by its IO2 mouth output low level signal, transferred to the control unit of lifting mechanism, removed the ban to lifting mechanism, allowed lifting mechanism normally to move.In conjunction with Fig. 1, when PLC put its IO2 mouth and is low level state, the coil power supply loop of AC contactor JK1 formed, and the normally open contact adhesive of control AC contactor JK1 is communicated with the line of three-phase alternating-current supply AC and positive and reverse rotation control circuit.Described positive and reverse rotation control circuit connects the terminals for power supplies UVW of lifting motor M, and when the driver controlled the suspender rising, positive turn-off closed the controlled adhesive of KM1, and reversal switch KM2 disconnects, and lifting motor M just changes, and drives the suspender rising; Otherwise when the closed suspender decline of driver button, positive turn-off closes KM1 and disconnects, the controlled adhesive of reversal switch KM2, and lifting motor M counter-rotating drives suspender and descends.
For the software design, can in the lifting program segment of PLC, increase the controlling point, as shown in Figure 2.The described maintenance mode select switch S3 that connects between the IO1 of PLC mouth and+24V direct supply, PLC detect the level state of the maintenance mode on-off signal that its IO1 mouth receives in real time, and this on-off signal is transferred in the lifting program segment.Increase the suspender pattern and judge statement in the lifting program segment, when on-off signal is low level, allow the lifting mechanism operation, the configuration state invalidating signal is removed the blockade to the lifting mechanism operation; And when on-off signal is high level, forbid that then lifting mechanism operation, configuration state signal are effectively, forbid the operation of lifting motor M.The controlling point of described status signal can be arranged in the rotating control flow of lifting motor M.
In specific operation process, maintainer at first conductor driver drops to the height that is fit to maintenance with suspender, by the maintainer select switch S 3 is switched to the suspender maintenance mode then.At this moment, the control power supply still keeps "on" position, and lifting mechanism is forbidden operation, thereby can guarantee that the maintainer can not come to harm because of suspender descends.After maintenance finished, the maintainer switched to normal mode of operation again with select switch S3, and the operation lifting mechanism normally moves.Because the conversion of suspender maintenance mode is therefore, safe and reliable by maintainer's local operation.
Certainly; the above only is a kind of preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a quayside container crane comprises controller and the lifting mechanism that is used to drive the suspender lifting; It is characterized in that: also be provided with the maintenance mode select switch on described hoisting crane, an end of described select switch connects power supply, and the other end connects wherein one road I/O mouth of controller; Described controller produces the control signal of forbidding or allowing the lifting mechanism operation according to the high-low level state of this road I/O mouth, transfers to the control unit of lifting mechanism.
2. quayside container crane according to claim 1 is characterized in that: described maintenance mode select switch is arranged on the ground cart active station of hoisting crane.
3. quayside container crane according to claim 2, it is characterized in that: in the control unit of described lifting mechanism, comprise an AC contactor, the coil of described AC contactor is connected between other one road I/O mouth of power supply and controller, and the normally open contact of AC contactor is connected in the current supply circuit of lifting motor in the lifting mechanism.
4. quayside container crane according to claim 3, it is characterized in that: normally open contact one end of described AC contactor connects three-phase alternating-current supply, the other end connects positive and reverse rotation control circuit, and connects the terminals for power supplies of lifting motor by positive and reverse rotation control circuit.
5. according to each described quayside container crane in the claim 1 to 4, it is characterized in that: described controller is a programmable logic controller (PLC).
6. according to each described quayside container crane in the claim 1 to 4, it is characterized in that: described power supply is+the 24V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205062073U CN201753235U (en) | 2010-08-23 | 2010-08-23 | Quayside container crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205062073U CN201753235U (en) | 2010-08-23 | 2010-08-23 | Quayside container crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753235U true CN201753235U (en) | 2011-03-02 |
Family
ID=43620966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205062073U Expired - Fee Related CN201753235U (en) | 2010-08-23 | 2010-08-23 | Quayside container crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753235U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910707A (en) * | 2018-08-24 | 2018-11-30 | 安徽合力股份有限公司 | A kind of empty container tool suspender decline protection control device and method |
| EP3862310A1 (en) | 2020-02-06 | 2021-08-11 | Manitowoc Crane Group France | Method for maintenance of a crane |
| CN115171261A (en) * | 2022-05-25 | 2022-10-11 | 北京国基科技股份有限公司 | Access control system and access control method |
-
2010
- 2010-08-23 CN CN2010205062073U patent/CN201753235U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910707A (en) * | 2018-08-24 | 2018-11-30 | 安徽合力股份有限公司 | A kind of empty container tool suspender decline protection control device and method |
| CN108910707B (en) * | 2018-08-24 | 2024-05-31 | 安徽合力股份有限公司 | Device and method for controlling descending protection of empty container lifting appliance |
| EP3862310A1 (en) | 2020-02-06 | 2021-08-11 | Manitowoc Crane Group France | Method for maintenance of a crane |
| FR3107046A1 (en) | 2020-02-06 | 2021-08-13 | Manitowoc Crane Group France | Maintenance process for a crane |
| CN115171261A (en) * | 2022-05-25 | 2022-10-11 | 北京国基科技股份有限公司 | Access control system and access control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104555626B (en) | Control method for safe descending of construction elevator in case of power failure | |
| CN201753235U (en) | Quayside container crane | |
| CN201990395U (en) | Automatic electricity taking device for overhead trolley conductor | |
| CN205151583U (en) | Cantilever crane | |
| CN201670661U (en) | Driving control system of track crane and track crane | |
| CN208022537U (en) | One kind is exempted to climb device | |
| CN104891345A (en) | Crane ground operation position limitation control apparatus | |
| CN102887434B (en) | Energy-saving tyre crane | |
| CN202182052U (en) | Fan control system of underground railway tunnel | |
| CN105129682B (en) | A kind of control method of hoistable platform | |
| CN212260451U (en) | Cigarette making machine set with alarm protection device | |
| CN208307938U (en) | Safety control device of coke tank car and hoister | |
| CN202754776U (en) | Turnover support | |
| CN101976996A (en) | Direct-current speed adjusting device with safe braking function for hoister and braking mode | |
| CN109814469B (en) | Electric control device for attached lifting scaffold | |
| CN201523348U (en) | Variable frequency speed regulation system of dither motor | |
| CN207267788U (en) | In, short-range wireless control in real time and data transfer display device | |
| CN202829170U (en) | Mine hoisting machine electronic control system | |
| CN202484736U (en) | Mobile crane and lighting system thereof | |
| CN206741289U (en) | A kind of robot workstation's rolling door control system based on PLC controls | |
| CN201634361U (en) | Protection control circuit for skip bucket | |
| CN201594805U (en) | Safety controller of mixing machine | |
| CN202848901U (en) | Energy-saving tire crane | |
| CN206021039U (en) | Multi-storied garage intelligence control system | |
| CN204778262U (en) | Automatic staircase multi -mode intelligence control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20110823 |