CN218841496U - Temporary standby protection circuit for crane - Google Patents
Temporary standby protection circuit for crane Download PDFInfo
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- CN218841496U CN218841496U CN202320246450.3U CN202320246450U CN218841496U CN 218841496 U CN218841496 U CN 218841496U CN 202320246450 U CN202320246450 U CN 202320246450U CN 218841496 U CN218841496 U CN 218841496U
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- crane
- relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Control And Safety Of Cranes (AREA)
Abstract
A temporary standby protection circuit for a crane comprises a control loop and an execution loop, wherein the control loop is correspondingly connected with a control unit of the crane in parallel, and the control loop is formed by connecting a normally-open manual switch and a temporary relay K054 in series; the execution loop is correspondingly connected with a power supply line of the crane execution mechanism in series, and the execution unit consists of a normally closed contact of a temporary relay K054; the circuit has the advantages of simple structure and long restart time of the crane.
Description
Technical Field
The utility model belongs to the technical field of crane protection circuit technique and specifically relates to a interim standby protection circuit for hoist is related to.
Background
As is known, under many special working conditions, in order to increase the working efficiency, the crane is required to perform frequent work, but the working operation of the crane is controlled and completed by an operator in a cab, and the operator needs to have a sufficient rest after working for a period of time, so that the crane needs to be powered off when the operator has a rest, thereby avoiding the situation that the crane makes dangerous actions due to accidental touch; however, when the crane is restarted after the whole power failure, the crane usually needs longer starting time, so that a lot of working time is wasted, and the whole working efficiency of a workshop is reduced;
therefore, in summary, a standby protection circuit capable of solving the problem of long restart time of the crane is needed in the market.
Disclosure of Invention
In order to overcome not enough in the background art, the utility model discloses a interim standby protection circuit for hoist.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a temporary standby protection circuit for a crane comprises a control loop and an execution loop, wherein the control loop is correspondingly connected with a control unit of the crane in parallel, and the control loop is formed by connecting a normally-open manual switch and a temporary relay K054 in series; the execution loop is correspondingly connected with a power supply line of the crane execution mechanism in series, and the execution unit is composed of a normally closed contact of a temporary relay K054.
Preferably, the temporary relay K054 is externally connected with a first relay K1 in parallel, and a normally closed switch of the first relay K1 is correspondingly connected in series between a normally closed contact of the temporary relay K054 and a power supply line of the crane execution unit.
Preferably, the control circuit is connected in parallel with an alarm circuit, and the alarm circuit is composed of a normally open contact of a temporary relay K054 and an indicator lamp which are connected in series.
Preferably, a second relay K2 is correspondingly connected in series between the normally closed switch of the first relay K1 and the power supply line of the crane execution unit, and a normally closed contact of the second relay K2 is connected in series between the normally open contact of the temporary relay K054 and the indicator lamp.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a temporary standby protection circuit for crane, normally open manual switch in pressing the control circuit can let the power supply line of crane control unit power-off temporarily through the execution circuit, thereby need not to cut off the power of the whole crane, just can let the execution unit of crane can't work, and the power supply line of recovering crane control unit also only need press normally open manual switch once more, simple structure, and effectively solve the problem that the crane restart time is longer;
in addition, whether the crane is in a temporary power-off state at present can be indicated through the alarm loop, and judgment of an operator on the running state of the crane is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a normally open manual switch; 2. and an indicator light.
Detailed Description
In the following description, the technical solution of the present invention will be described with reference to the accompanying drawings in the embodiment of the present invention, it should be understood that, if there are the indicated positions or positional relationships such as "upper", "lower", "front", "rear", "left", "right", etc., it only corresponds to the drawings of the present invention, and for convenience of description, it is not intended to indicate or imply that the indicated device or element must have a specific position:
the temporary standby protection circuit for the crane, which is described in conjunction with the attached figure 1, comprises a control loop and an execution loop, wherein the control loop is correspondingly connected with a control unit of the crane in parallel, and the control loop is formed by connecting a normally-open manual switch 1 and a temporary relay K054 in series; the execution loop is correspondingly connected with a power supply line of the crane execution mechanism in series, and the execution unit is composed of a normally closed contact of a temporary relay K054; firstly, a normally open manual switch 1 is pressed down to enable the switch to be in a closed state, namely a control loop is conducted, a temporary relay K054 is electrified, then a normally closed switch of the temporary relay K054 is disconnected, a power supply line of a crane actuating mechanism is also disconnected, and an actuating unit of the crane can not work without powering off the whole crane; the manual switch is pressed again to enable the switch to be in a disconnected state, namely the control loop is broken, the temporary relay K054 loses power, then the normally closed switch of the relay is closed again, the power supply line of the crane actuating mechanism is conducted again, and the crane resumes work;
in addition, a first relay K1 is connected outside the temporary relay K054 in parallel, the execution loop is provided with a second relay K2 connected in series, the first relay K1 is connected outside the temporary relay K054 in parallel, and a normally closed switch of the first relay K1 is correspondingly connected between a normally closed contact of the temporary relay K054 and a power supply line of the crane execution unit in series; because the normally closed contact of the temporary relay K054 is likely to be adhered after long-time work, the execution effect of the execution loop can be effectively improved by additionally arranging the first relay K1 as redundant equipment;
according to the requirement, the control circuit is connected with an alarm circuit in parallel, the alarm circuit is composed of a normally open contact of a temporary relay K054 and an indicator lamp 2 which are connected in series, whether the current crane is in a temporary power-off state can be indicated through the alarm circuit, the judgment of the operation state of the crane by an operator is facilitated, in addition, a second relay K2 is correspondingly connected in series between a normally closed switch of the first relay K1 and a power supply line of a crane execution unit, a normally closed contact of the second relay K2 is connected in series between the normally open contact of the temporary relay K054 and the indicator lamp 2, and the operation state of the crane can be accurately indicated by the indicator lamp 2 through the matching of the second relay K2 and the temporary relay K054; only temporary relay K054 circular telegram promptly, and under the circumstances of second relay K2 outage, pilot lamp 2 just can light, show that the hoist gets into the temporary stop state this moment, if temporary relay K054 circular telegram, and second relay K2 does not cut off the power supply, pilot lamp 2 does not light this moment, explains this protection circuit's execution return circuit breaks down.
The details of the present invention not described in detail are prior art, and it will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (3)
1. A temporary standby protection circuit for a crane is characterized in that: the crane control system comprises a control loop and an execution loop, wherein the control loop is correspondingly connected with a control unit of the crane in parallel, the control loop is formed by connecting a normally-open manual switch (1) and a temporary relay K054 in series, and a first relay K1 is connected outside the temporary relay K054 in parallel; the execution loop is correspondingly connected with a power supply line of the crane execution mechanism in series, and the execution unit is formed by correspondingly connecting a normally closed contact of the temporary relay K054 and a normally closed switch of the first relay K1 in series.
2. A temporary standby protection circuit for a crane according to claim 1, wherein: the control circuit is connected with an alarm circuit in parallel, and the alarm circuit is composed of a normally open contact of a temporary relay K054 and an indicator lamp (5) which are connected in series.
3. The temporary standby protection circuit for a hoist according to claim 2, wherein: correspond to establish ties between first relay K1's normally closed switch and the power supply line of hoist execution unit and be equipped with second relay K2, and establish ties between temporary relay K054's normally open contact and pilot lamp (5) and be equipped with second relay K2's normally closed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246450.3U CN218841496U (en) | 2023-01-12 | 2023-01-12 | Temporary standby protection circuit for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320246450.3U CN218841496U (en) | 2023-01-12 | 2023-01-12 | Temporary standby protection circuit for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218841496U true CN218841496U (en) | 2023-04-11 |
Family
ID=87309740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320246450.3U Active CN218841496U (en) | 2023-01-12 | 2023-01-12 | Temporary standby protection circuit for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218841496U (en) |
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2023
- 2023-01-12 CN CN202320246450.3U patent/CN218841496U/en active Active
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