CN203903808U - Lifting mechanism control device for grab crane - Google Patents
Lifting mechanism control device for grab crane Download PDFInfo
- Publication number
- CN203903808U CN203903808U CN201420285677.XU CN201420285677U CN203903808U CN 203903808 U CN203903808 U CN 203903808U CN 201420285677 U CN201420285677 U CN 201420285677U CN 203903808 U CN203903808 U CN 203903808U
- Authority
- CN
- China
- Prior art keywords
- rotor resistance
- relay
- lifting mechanism
- main contact
- coil
- 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 - Lifetime
Links
- 230000007423 decrease Effects 0.000 claims description 32
- 230000001012 protector Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Landscapes
- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a lifting mechanism control device for a grab crane. The traditional cam controller is replaced by a contactor which can be operated frequently in a lifting mechanism control main circuit of the grab crane; connection and disconnection of a lifting motor circuit can be realized through the contactor, and the problem that failures are easily caused when the lifting motor is directly connected and disconnected by using the cam controller is effectively solved. Moreover, through organic combination of a master controller and a PLC in a lifting mechanism control secondary circuit, a control circuit which is flexible to control, simple in wiring, few in fault points and stable and reliable in operation is provided, and a powerful guarantee is provided for normal operation of the crane.
Description
Technical field
The utility model belongs to automatic control technology field, further belongs to crane control technical field, is specifically related to a kind of simple in structurely, and working stability is reliable, is applicable to the control setup of grab crane lifting mechanism.
Background technology
Grab crane is a kind of thing machinery of automatically getting, and its crawl and draw off material action by driver control does not need auxilian, thereby avoided workman's heavy work, has saved service working time, has greatly improved handling efficiency.
The drive motor that hoists of grab crane of the prior art adopts wound-rotor asynchronous motor conventionally, the resistance that the electric control system of hoisting crane is serially connected in rotor loop by adjusting is controlled motor speed, custom adopts cam activated switch as operation control, because cam activated switch directly disconnects and connects motor rotor loop, the electric current that flows through cam activated switch is larger, often damage cam activated switch, make cam activated switch become the components and parts of the frequent et out of order of grab crane, thereby affect the normal use of hoisting crane.Meanwhile, the secondary control loop of grab crane is commonly used Control at present, and relay circuit wiring is complicated, and trouble point is many, poor reliability.For this reason, the exploitation of research and development system is a kind of simple in structure, and the control setup that working stability failure-free is applicable to grab crane lifting mechanism is the key point addressing this problem.
Utility model content
It is a kind of simple in structure that the purpose of this utility model is to provide, and trouble point is few, and working stability is reliable, is applicable to the control setup of grab crane lifting mechanism.
The purpose of this utility model is achieved in that and comprises circuit breaker Q S1, rotor resistance Z1, rotor resistance Z2, rotor resistance Z3, master controller, PLC;
Contactless for hoisting KS1, its main contact KS1-1, its normally closed contact KS1-2, its coil KS1-3;
Decline contactless switch KS2, its main contact KS2-1, its normally closed contact KS2-2, its coil KS2-3;
Rotor resistance switching contactor KS3, its main contact KS3-1, its coil KS3-3;
Rotor resistance switching contactor KS4, its main contact KS4-1, its coil KS4-3;
Rotor resistance switching contactor KS5, its main contact KS5-1, its coil KS5-3;
Climb command relay K A1, decline commands relays KA2, vertical relay KB1 down relay KB2, one-level accelerating relay KB3, secondary accelerating relay KB4, three grades of accelerating relay KB5;
Lifting mechanism is controlled in main line, and the end of incoming cables of circuit breaker Q S1 is connected with three line power supplys, the end of incoming cables of the main contact KS1-1 of contactless for hoisting KS1 and connect the end of incoming cables of main contact KS2-1 of decline contactless switch KS2 after be connected with the leading-out terminal of circuit breaker Q S1; The leading-out terminal of the main contact KS1-1 of contactless for hoisting KS1 and connect the leading-out terminal of main contact KS2-1 of decline contactless switch KS2 after be connected with lifting electric motor MS1; Described lifting electric motor MS1 is also connected with one end of rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 respectively, and the other end of described rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 connects together; The main contact KS3-1 of rotor resistance switching contactor KS3 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, the main contact KS4-1 of rotor resistance switching contactor KS4 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, and the main contact KS5-1 of rotor resistance switching contactor KS5 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively;
Lifting mechanism is controlled in secondary line, is provided with two connection lines between master controller and PLC, is provided with climb command relay K A1 in the first connection line; In the second connection line, be provided with decline commands relays KA2;
Described PLC is provided with five outlet lines, and the first outlet line is electrically connected to vertical relay KB1, the normally closed contact KS2-2 of decline contactless switch KS2 and the coil KS1-3 of contactless for hoisting KS1; The second outlet line is electrically connected to down relay KB2, the normally closed contact KS1-2 of contactless for hoisting KS1 and the coil KS2-3 of decline contactless switch KS2; The 3rd outlet line is electrically connected to the coil KS5-3 of one-level accelerating relay KB3 and rotor resistance switching contactor KS5; The 4th outlet line is electrically connected to the coil KS4-3 of secondary accelerating relay KB4 and rotor resistance switching contactor KS4; The 5th outlet line is electrically connected to the coil KS3-3 of three grades of accelerating relay KB5 and rotor resistance switching contactor KS3.
Described grab crane lifting mechanism control setup also comprises motor protector FS1, and described motor protector FS1 is connected in series in the leading-out terminal and the circuit between lifting electric motor MS1 of the main contact KS1-1 that is arranged on contactless for hoisting KS1.
Described grab crane lifting mechanism control setup also comprises lifting mechanism drg YS1, and described lifting mechanism drg YS1 also connects in the circuit being arranged between motor protector FS1 and lifting electric motor MS1.
The utility model is controlled in main line and is used the contactless switch that is suitable for frequent operation to replace traditional cam controller at grab crane lifting mechanism, by contactless switch, realize connection and the disjunction of lifting electric motor circuit, actv. has solved and has used the direct disjunction of cam controller and connect the problem that lifting electric motor easily breaks down; The utility model is also controlled in secondary line master controller and PLC is organically combined at lifting mechanism, provide a kind of control flexibly, wiring is simple, trouble point is few, working stability failure-free control path, for the normal work of crane hoisting mechanism provides powerful guarantee.
Accompanying drawing explanation
Fig. 1 is the principle schematic that the utility model lifting mechanism is controlled main line;
Fig. 2 is the principle schematic that the utility model lifting mechanism is controlled secondary line.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but never in any form the utility model is limited, and any conversion of doing based on the utility model training centre, all falls into the utility model protection domain.
As depicted in figs. 1 and 2, the utility model comprises circuit breaker Q S1, rotor resistance Z1, rotor resistance Z2, rotor resistance Z3, master controller, PLC;
Contactless for hoisting KS1, its main contact KS1-1, its normally closed contact KS1-2, its coil KS1-3;
Decline contactless switch KS2, its main contact KS2-1, its normally closed contact KS2-2, its coil KS2-3;
Rotor resistance switching contactor KS3, its main contact KS3-1, its coil KS3-3;
Rotor resistance switching contactor KS4, its main contact KS4-1, its coil KS4-3;
Rotor resistance switching contactor KS5, its main contact KS5-1, its coil KS5-3;
Climb command relay K A1, decline commands relays KA2, vertical relay KB1 down relay KB2, one-level accelerating relay KB3, secondary accelerating relay KB4, three grades of accelerating relay KB5;
Lifting mechanism is controlled in main line, and the end of incoming cables of circuit breaker Q S1 is connected with three line power supplys, the end of incoming cables of the main contact KS1-1 of contactless for hoisting KS1 and connect the end of incoming cables of main contact KS2-1 of decline contactless switch KS2 after be connected with the leading-out terminal of circuit breaker Q S1; The leading-out terminal of the main contact KS1-1 of contactless for hoisting KS1 and connect the leading-out terminal of main contact KS2-1 of decline contactless switch KS2 after be connected with lifting electric motor MS1; Described lifting electric motor MS1 is also connected with one end of rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 respectively, and the other end of described rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 connects together; The main contact KS3-1 of rotor resistance switching contactor KS3 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, the main contact KS4-1 of rotor resistance switching contactor KS4 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, and the main contact KS5-1 of rotor resistance switching contactor KS5 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively;
Lifting mechanism is controlled in secondary line, is provided with two connection lines between master controller and PLC, is provided with climb command relay K A1 in the first connection line; In the second connection line, be provided with decline commands relays KA2;
Described PLC is provided with five outlet lines, and the first outlet line is electrically connected to vertical relay KB1, the normally closed contact KS2-2 of decline contactless switch KS2 and the coil KS1-3 of contactless for hoisting KS1; The second outlet line is electrically connected to down relay KB2, the normally closed contact KS1-2 of contactless for hoisting KS1 and the coil KS2-3 of decline contactless switch KS2; The 3rd outlet line is electrically connected to the coil KS5-3 of one-level accelerating relay KB3 and rotor resistance switching contactor KS5; The 4th outlet line is electrically connected to the coil KS4-3 of secondary accelerating relay KB4 and rotor resistance switching contactor KS4; The 5th outlet line is electrically connected to the coil KS3-3 of three grades of accelerating relay KB5 and rotor resistance switching contactor KS3.
Described grab crane lifting mechanism control setup also comprises motor protector FS1, and described motor protector FS1 is connected in series in the leading-out terminal and the circuit between lifting electric motor MS1 of the main contact KS1-1 that is arranged on contactless for hoisting KS1.
Described grab crane lifting mechanism control setup also comprises lifting mechanism drg YS1, and described lifting mechanism drg YS1 also connects in the circuit being arranged between motor protector FS1 and lifting electric motor MS1.
Described master controller adopts Schneider XD2PA12CR small command controller.
Described PLC adopts the Mitsubishi PLC that CPU element is FX3U-32MR/ES-A.
Described contactless for hoisting KS1, decline contactless switch KS2, rotor resistance switching contactor KS3, rotor resistance switching contactor KS4 and rotor resistance switching contactor KS5 are AC contactor.
Described climb command relay K A1, decline commands relays KA2, vertical relay KB1, down relay KB2, one-level accelerating relay KB3, secondary accelerating relay KB4 and three grades of accelerating relay KB5 are intermediate relay.
The components and parts that the technical solution of the utility model adopts all can obtain from the market, and above-mentioned components and parts principle of work in actual use and the concrete mode of connection are prior art for a person skilled in the art.
principle of work of the present utility model and working process:
The utility model is by operation master controller, master controller output climb command or decline instruction, when master controller output climb command, climb command relay K A1 action, connect the first connection line between master controller and PLC, described PLC optionally connects according to the above-mentioned climb command obtaining the outlet line being connected with PLC, realization is to the rising of lifting mechanism and speed control, when lifting mechanism is during in rising mode of operation, because difference is accelerated the selection of outlet line, make lifting mechanism have three kinds of different rising speed-regulating controling modes, can meet the rising speed governing needs of lifting mechanism in practice, when master controller output decline instruction, decline commands relays KA2 action, connect the second connection line between master controller and PLC, described PLC optionally connects according to the above-mentioned decline instruction obtaining the outlet line being connected with PLC, realization is to the decline of lifting mechanism and speed control, when lifting mechanism is during in descent mode, because difference is accelerated the selection of outlet line, make lifting mechanism also have three kinds of different decline speed-regulating controling modes, can meet the decline speed governing needs of lifting mechanism in practice.
The utility model is provided with motor protector FS1 in crane hoisting mechanism is controlled main line, when there is job failure in lifting electric motor can and alarm and protection is provided, effectively extend the service life of lifting electric motor; The utility model is also provided with lifting mechanism drg YS1 in crane hoisting mechanism is controlled main line, for the safe and reliable operation of lifting mechanism provides powerful guarantee.
The utility model is controlled in main line and is used the contactless switch that is suitable for frequent operation to replace traditional cam controller at grab crane lifting mechanism, by contactless switch, realize connection and the disjunction of lifting electric motor circuit, actv. has solved and has used the direct disjunction of cam controller and connect the problem that lifting electric motor easily breaks down; The utility model is also controlled in secondary line master controller and PLC is organically combined at lifting mechanism, provide a kind of control flexibly, wiring is simple, trouble point is few, working stability failure-free control path, for the normal work of crane hoisting mechanism provides powerful guarantee.
The technical scheme that the utility model provides has commonality widely, can in the control path of grab bucket switching mechanism, traveling mechanism of the larger traveller and the wheeling mechanism of hoisting crane, all rationally transplant and use technique scheme, thereby realize the effective control to grab crane.
Claims (7)
1. a grab crane lifting mechanism control setup, comprising:
Circuit breaker Q S1, rotor resistance Z1, rotor resistance Z2, rotor resistance Z3, master controller, PLC;
Contactless for hoisting KS1, its main contact KS1-1, its normally closed contact KS1-2, its coil KS1-3;
Decline contactless switch KS2, its main contact KS2-1, its normally closed contact KS2-2, its coil KS2-3;
Rotor resistance switching contactor KS3, its main contact KS3-1, its coil KS3-3;
Rotor resistance switching contactor KS4, its main contact KS4-1, its coil KS4-3;
Rotor resistance switching contactor KS5, its main contact KS5-1, its coil KS5-3;
Climb command relay K A1, decline commands relays KA2, vertical relay KB1 down relay KB2, one-level accelerating relay KB3, secondary accelerating relay KB4, three grades of accelerating relay KB5;
It is characterized in that: lifting mechanism is controlled in main line, the end of incoming cables of circuit breaker Q S1 is connected with three line power supplys, the end of incoming cables of the main contact KS1-1 of contactless for hoisting KS1 and connect the end of incoming cables of main contact KS2-1 of decline contactless switch KS2 after be connected with the leading-out terminal of circuit breaker Q S1; The leading-out terminal of the main contact KS1-1 of contactless for hoisting KS1 and connect the leading-out terminal of main contact KS2-1 of decline contactless switch KS2 after be connected with lifting electric motor MS1; Described lifting electric motor MS1 is also connected with one end of rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 respectively, and the other end of described rotor resistance Z1, rotor resistance Z2, rotor resistance Z3 connects together; The main contact KS3-1 of rotor resistance switching contactor KS3 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, the main contact KS4-1 of rotor resistance switching contactor KS4 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively, and the main contact KS5-1 of rotor resistance switching contactor KS5 is connected with the centre tap of rotor resistance Z1, Z2, Z3 respectively;
Lifting mechanism is controlled in secondary line, is provided with two connection lines between master controller and PLC, is provided with climb command relay K A1 in the first connection line; In the second connection line, be provided with decline commands relays KA2;
Described PLC is provided with five outlet lines, and the first outlet line is electrically connected to vertical relay KB1, the normally closed contact KS2-2 of decline contactless switch KS2 and the coil KS1-3 of contactless for hoisting KS1; The second outlet line is electrically connected to down relay KB2, the normally closed contact KS1-2 of contactless for hoisting KS1 and the coil KS2-3 of decline contactless switch KS2; The 3rd outlet line is electrically connected to the coil KS5-3 of one-level accelerating relay KB3 and rotor resistance switching contactor KS5; The 4th outlet line is electrically connected to the coil KS4-3 of secondary accelerating relay KB4 and rotor resistance switching contactor KS4; The 5th outlet line is electrically connected to the coil KS3-3 of three grades of accelerating relay KB5 and rotor resistance switching contactor KS3.
2. grab crane lifting mechanism control setup according to claim 1; it is characterized in that: also comprise motor protector FS1, described motor protector FS1 is connected in series in the leading-out terminal and the circuit between lifting electric motor MS1 of the main contact KS1-1 that is arranged on contactless for hoisting KS1.
3. grab crane lifting mechanism control setup according to claim 2, is characterized in that: also comprise lifting mechanism drg YS1, described lifting mechanism drg YS1 also connects in the circuit being arranged between motor protector FS1 and lifting electric motor MS1.
4. grab crane lifting mechanism control setup according to claim 1, is characterized in that: described master controller adopts Schneider XD2PA12CR small command controller.
5. grab crane lifting mechanism control setup according to claim 1, is characterized in that: described PLC adopts the Mitsubishi PLC that CPU element is FX3U-32MR/ES-A.
6. grab crane lifting mechanism control setup according to claim 1, it is characterized in that: described contactless for hoisting KS1, decline contactless switch KS2, rotor resistance switching contactor KS3, rotor resistance switching contactor KS4 and rotor resistance switching contactor KS5 are AC contactor.
7. grab crane lifting mechanism control setup according to claim 1, it is characterized in that: described climb command relay K A1, decline commands relays KA2, vertical relay KB1, down relay KB2, one-level accelerating relay KB3, secondary accelerating relay KB4 and three grades of accelerating relay KB5 are intermediate relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285677.XU CN203903808U (en) | 2014-05-30 | 2014-05-30 | Lifting mechanism control device for grab crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420285677.XU CN203903808U (en) | 2014-05-30 | 2014-05-30 | Lifting mechanism control device for grab crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203903808U true CN203903808U (en) | 2014-10-29 |
Family
ID=51778095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420285677.XU Expired - Lifetime CN203903808U (en) | 2014-05-30 | 2014-05-30 | Lifting mechanism control device for grab crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203903808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502481A (en) * | 2018-11-26 | 2019-03-22 | 河南科润自动化有限公司 | Lifting mechanism controller |
-
2014
- 2014-05-30 CN CN201420285677.XU patent/CN203903808U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502481A (en) * | 2018-11-26 | 2019-03-22 | 河南科润自动化有限公司 | Lifting mechanism controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203903808U (en) | Lifting mechanism control device for grab crane | |
| CN204310713U (en) | Bridge crane frequency conversion protection system | |
| CN203865911U (en) | Electrical emergency control circuit of tower crane | |
| CN203445481U (en) | Sling specialized for replacing whole 66-kilovolt isolating switch set | |
| CN206232351U (en) | A kind of steel cable hoisting protection device with height limit switch | |
| CN104332332A (en) | Interlocked control system for electric grounding switch | |
| CN104803262A (en) | Intelligent construction hoist | |
| CN204620956U (en) | Screw-rolling machine anti-misoperation emergency stop device | |
| CN203269452U (en) | Steady braking circuit for variable amplitudes of single-jib crane | |
| CN203950613U (en) | Cable wire twisting machine | |
| CN202872456U (en) | Control device enabling automatic switching on of mains electricity supply after UPS failure in ingot casting production process | |
| CN202586284U (en) | Motor overheating delay protection device | |
| CN206457116U (en) | A kind of automatic stop layers control device of building hoist | |
| CN102142799B (en) | Silicon controlled stator voltage-regulation and speed-regulation parallel operation electric control system | |
| CN102071438B (en) | Multifunctional crane feeding section sliding contact line power supply device of electrolysis shop | |
| CN204316385U (en) | A kind of motor on off control device | |
| CN201990400U (en) | Electrical system protection device of overhead travelling crane | |
| CN203716211U (en) | AFE frequency converter protection system for excavator | |
| CN213085121U (en) | Active cable-retracting control system of elevator | |
| CN203368047U (en) | Integrated grid-connection and inversion controller of wind generator | |
| CN203759553U (en) | Steam boiler water level alarm interference preventing device | |
| CN203191773U (en) | Start-stop control device for relay contact-control electrical device | |
| CN201286010Y (en) | Combined motor control apparatus | |
| CN102969943A (en) | Motor automatic control device | |
| CN203166509U (en) | Contactor capable of avoiding open-phase operation of power system for transformer station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |