CN217780579U - Crane heavy hammer limit control system - Google Patents
Crane heavy hammer limit control system Download PDFInfo
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- CN217780579U CN217780579U CN202221335611.8U CN202221335611U CN217780579U CN 217780579 U CN217780579 U CN 217780579U CN 202221335611 U CN202221335611 U CN 202221335611U CN 217780579 U CN217780579 U CN 217780579U
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- heavy hammer
- relay
- weight
- normally open
- open contact
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- 230000009471 action Effects 0.000 claims abstract description 40
- 230000000670 limiting effect Effects 0.000 claims abstract description 16
- 230000001174 ascending effect Effects 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model relates to a hoist equipment control field specifically is a hoist weight limit control system, include: the heavy hammer action relay comprises a heavy hammer limit normally closed contact, a heavy hammer limit normally open contact, a heavy hammer linkage release button, a heavy hammer action relay first normally open contact, a heavy hammer linkage release relay first normally open contact and a heavy hammer action relay second normally open contact, wherein the heavy hammer limit normally closed contact, the heavy hammer limit normally open contact, the heavy hammer linkage release button, the heavy hammer action relay first normally open contact and the heavy hammer linkage release relay second normally open contact are connected with a control power supply; the heavy hammer linkage release relay is connected with a first normally closed contact of the heavy hammer linkage release relay in series to a crane ascending control loop; the scheme is that the action state of the heavy punch limiting is reflected by a heavy punch action relay and a heavy punch action alarm indicator lamp; the heavy hammer interlocking release button, the heavy hammer action relay and the heavy hammer interlocking release relay are used for realizing the release of the heavy hammer interlocking condition and the interlocking of the lifting direction in a release state; therefore, an operator can find the situation of the limiting action of the heavy hammer at the first time and can automatically handle the fault problem.
Description
Technical Field
The utility model relates to a hoist equipment control field specifically is a hoist weight limit control system.
Background
The heavy hammer limiting device is a limit protection device for preventing the top collision accident caused by the overhigh lifting of a crane hook and a grab bucket, and in application, a heavy hammer limiting normally-closed contact is connected in series with a crane door limiting and phase protecting device, an overcurrent relay, a zero-position relay, an emergency stop button and the like in a main contactor coil control loop. In actual work, the crane main contactor cannot be started due to the fact that the heavy hammer limiting action can be caused by factors such as shaking of a bridge crane translation operation vehicle body, abrasion of a steel wire rope, failure of a spiral limiting mechanism, mechanical failure of the heavy hammer or electrical failure of the heavy hammer. The fault that the main contactor of the crane cannot be started is caused by a plurality of reasons, and the fault is not limited to the heavy hammer. Under the condition that no heavy hammer action indication exists, maintenance personnel are required to conduct troubleshooting one by one. And the maintenance personnel manually reset the heavy hammer limit on the crane trolley, and the trolley is difficult to operate due to the narrow space, so that the required time for checking and maintaining is longer, and the production continuity is influenced. Therefore, it is necessary to provide a device that can quickly recognize the weight limit operation and allow the operator to perform general autonomous processing after the weight limit operation. Therefore, how to find the position limitation action of the bridge crane counterweight at the first time so that the operator can autonomously handle the problem becomes a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to find the limiting action of the heavy hammer of the bridge crane in the first time so that an operator can independently process the action;
in order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to a hoist weight limit control system, include: the weight limiting normally closed contact is connected with the weight interlock release relay in parallel and then is connected to a main contactor coil control loop; the weight limiting normally open contact is connected with the weight action relay coil in series and then is connected with a control power supply; the weight interlocking release button is connected with the weight interlocking release relay coil in series and then is connected with a control power supply, and the first normally open contact of the weight action relay is connected with the second normally open contact of the weight interlocking release relay in series and then is connected with the weight interlocking release button in parallel; the second normally open contact of the heavy hammer action relay is connected with the warning lamp in series and then is connected with the control power supply; the weight interlocking release relay is connected with a first normally closed contact of the weight interlocking release relay in series to a crane ascending control loop.
The utility model has the advantages that: the utility model relates to a crane weight limit control system, the scheme reflects the action state of weight limit by using a weight action relay and a weight action alarm indicator lamp; the heavy hammer interlocking release button, the heavy hammer action relay and the heavy hammer interlocking release relay are used for realizing the release of the heavy hammer interlocking condition and the interlocking of the lifting direction in a release state; therefore, an operator can find the situation of the limit action of the heavy hammer at the first time and automatically handle the fault problem.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a circuit schematic of the present system;
fig. 2 is a system diagram of the present invention applied to a main contactor coil control loop;
fig. 3 is a system diagram of the present invention applied to a crane lift control loop;
in the figure: the device comprises a weight limit normally closed contact 1, a weight linkage release relay first normally open contact 2, a weight limit normally open contact 3, a weight action relay coil 4, a weight linkage release button 5, a weight linkage release relay coil 6, a weight action relay first normally open contact 7, a weight linkage release relay second normally open contact 8, a weight action relay second normally open contact 9, a warning lamp 10 and a weight linkage release relay first normally closed contact 11.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the utility model relates to a hoist weight limit control system, including the spacing normally closed contact of weight 1, the weight chain removes the first normally open contact of relay 2, the spacing normally open contact of weight 3, weight action relay coil 4, weight chain removes button 5, weight chain removes relay coil 6, the first normally open contact of weight action relay 7, weight chain removes relay second normally open contact 8, weight action relay second normally open contact 9, warning light 10, the first normally closed contact 11 of weight chain removal relay.
The utility model connects the heavy hammer chain release relay first normally open contact 2 and the heavy hammer limit normally closed contact 1 to the main contactor coil control loop after being connected in parallel; the counter weight action relay coil 4 is connected with the counter weight limit normally open contact 3 in series; the first normally open contact 7 of the weight action relay is connected in series with the second normally open contact 8 of the weight interlock release relay, then is connected in parallel with the weight interlock release button 5, and is connected in series with the weight interlock release relay coil 6; the second normally open contact 9 of the weight action relay is connected in series with the warning light 10. The first normally closed contact 11 of the weight interlock release relay is connected in series to the crane ascending control loop.
When the heavy hammer is limited normally in use, the coil 4 of the heavy hammer action relay is not electrified, the heavy hammer action relay is used for actuating the first normally open contact 7 of the relay, the second normally open contact 8 of the heavy hammer linkage release relay is kept normally open, and the warning lamp 10 is not electrified; the coil 6 of the weight interlocking release relay is not electrified, the first normally open contact 2 of the weight interlocking release relay is kept normally open, the weight is limited to participate in the crane starting interlocking, the first normally closed contact 11 of the weight interlocking release relay is kept closed, and the crane runs normally in the lifting direction.
When the weight moves, the weight limit normally-open contact 1 is disconnected, the crane main contactor loses power, the crane stops running, the weight limit normally-open contact 3 is closed, the weight action relay coil 4 is electrified, the weight action relay second normally-open contact 9 is closed, the warning lamp 10 is electrified, an alarm is given, and meanwhile the weight action relay first normally-open contact 7 is closed.
After no problem is confirmed on site, the weight chain release button 5 is pressed, the weight chain release relay coil 6 is electrified, and the weight chain release relay second normally open contact 8 and the weight action relay first normally open contact 7 enable the electric coil to be self-locked. The hammer interlocking releases the closing of the first normally open contact 2 of the relay to short-circuit the normally closed contact 1 of the hammer limit, and releases the condition of the hammer limit starting interlocking. And the first normally closed contact 11 of the weight interlocking release relay is disconnected, so that the operation of a crane ascending control loop is limited.
After the weight chain is released, the main contactor of the crane can be started normally, and the crane operates normally in the downward direction except that the lifting control loop of the crane cannot operate. When the grab bucket or the lifting hook descends to a certain height, the limiting action of the heavy hammer is reset. After the weight limiting action is reset, the weight limiting normally open contact 3 is disconnected, the coil 4 of the weight action relay is powered off, the first normally open contact 7 of the weight action relay is disconnected, the warning lamp 10 is powered off, and the alarm stops; the first normally open contact 7 of the weight action relay is disconnected, the coil 4 of the weight interlocking release relay loses power, the first normally open contact 2 of the weight interlocking release relay is disconnected, the short circuit at the two ends of the normally closed contact 1 of the weight limiting position is released, and the condition of the weight interlocking start is recovered. The first normally closed contact 11 of the heavy hammer interlocking release relay is closed, the interlocking of a lifting loop of the crane is released, and the lifting loop can normally run; the heavy hammer chain releases the second normally open contact 8 of the relay to be disconnected and then normally open is recovered.
In this specification, as shown in fig. 2, a main contactor coil control loop (a part of the system of the present invention is a dotted line frame portion); as shown in fig. 3, the crane lift control loop (the block part is part of the system of the present invention) belongs to the prior art known to those skilled in the art, and therefore is not described in detail.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. The utility model provides a hoist weight limit control system which characterized in that includes:
the weight limiting normally closed contact is connected in parallel with the weight linkage release relay first normally open contact and then is connected to the main contactor coil control loop;
the weight limiting normally open contact is connected with the weight action relay coil in series and then is connected with a control power supply;
the weight interlocking release button is connected with the weight interlocking release relay coil in series and then is connected with the control power supply, wherein a first normally open contact of the weight action relay is connected with a second normally open contact of the weight interlocking release relay in series and then is connected with the weight interlocking release button in parallel;
the second normally open contact of the heavy hammer action relay is connected with the control power supply;
the weight interlocking release relay is connected with a first normally closed contact of the weight interlocking release relay in series to a crane ascending control loop.
2. The crane weight limit control system as claimed in claim 1, wherein the weight interlock release relay is connected to the control power source after the first normally closed contact is connected to the warning lamp in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335611.8U CN217780579U (en) | 2022-05-31 | 2022-05-31 | Crane heavy hammer limit control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221335611.8U CN217780579U (en) | 2022-05-31 | 2022-05-31 | Crane heavy hammer limit control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217780579U true CN217780579U (en) | 2022-11-11 |
Family
ID=83911173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221335611.8U Active CN217780579U (en) | 2022-05-31 | 2022-05-31 | Crane heavy hammer limit control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217780579U (en) |
-
2022
- 2022-05-31 CN CN202221335611.8U patent/CN217780579U/en active Active
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