CN212101706U - Crane locking control system - Google Patents
Crane locking control system Download PDFInfo
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- CN212101706U CN212101706U CN202020689178.2U CN202020689178U CN212101706U CN 212101706 U CN212101706 U CN 212101706U CN 202020689178 U CN202020689178 U CN 202020689178U CN 212101706 U CN212101706 U CN 212101706U
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Abstract
The utility model relates to a crane locking control system, which comprises four control branches, wherein, a crane starting hand switch and a control coil of an intermediate relay are connected in series and arranged on a first control branch, a control coil of the intermediate relay and a control coil of a crane running relay are connected in parallel, a normally open contact switch of the intermediate relay and a control coil of a first time relay are connected in series and arranged on a second control branch, a time delay closing contact switch of the first time relay, the control coil of the second time relay and the alarm are connected in series and arranged on the third control branch, the delay closing contact switch of the second time relay and the control coil of the locking relay are connected in series and arranged on the fourth control branch, and the normally open contact switch of the crane operation relay and the normally closed contact switch of the locking relay are connected in series and arranged on the crane power supply main line. The control system realizes the halt of the crane after long-time use so as to maintain and improve the safety of the crane.
Description
Technical Field
The utility model relates to a hoist lock quick-witted control system.
Background
The crane is a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range, and the crane is widely applied. Generally, the workload of the crane is heavy, the crane can cause low performance after being continuously used for a long time, and then safety accidents occur easily, so that after the crane is continuously used for a long time, a worker is required to maintain the crane, but the existing crane control system only can realize the starting and stopping of the crane, the worker cannot be reminded to maintain the crane after the crane is continuously used for a long time, and the safety of the crane is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hoist lock machine control system for solve the problem that current hoist control system can reduce the security of hoist.
In order to solve the problem, the utility model adopts the following technical scheme:
a crane lock control system comprising:
a crane power supply main line;
starting a manual switch by the crane;
an intermediate relay;
a crane operation relay;
a lock relay;
a first time relay;
a second time relay;
an alarm; and
the control circuit comprises a first control branch, a second control branch, a third control branch and a fourth control branch which are connected with a power supply;
the crane starting manual switch and the control coil of the intermediate relay are arranged on the first control branch in series, and the control coil of the intermediate relay and the control coil of the crane operating relay are arranged in parallel; the normally open contact switch of the intermediate relay and the control coil of the first time relay are arranged on the second control branch in series; the time delay closing contact switch of the first time relay, the control coil of the second time relay and the alarm are arranged on the third control branch in series; the time delay closing contact switch of the second time relay and the control coil of the locking relay are arranged on the fourth control branch in series; and the normally open contact switch of the crane operation relay and the normally closed contact switch of the crane locking relay are connected in series on the crane power supply main line.
Preferably, the crane locking control system further comprises a status indicator lamp, and the status indicator lamp is arranged on the first control branch in series.
Preferably, the alarm is an audible and visual alarm.
The utility model has the advantages that: when the manual switch is switched on when the crane is operated to start the manual switch, the control coil of the intermediate relay and the control coil of the crane operation relay are electrified, a main power supply circuit of the crane is switched on, the crane starts to operate, the normally open contact switch of the intermediate relay is switched on, the control coil of the first time relay is electrified, the first time relay is provided with delay time, the delay time can be matched with the allowable operation time of the crane, when the set delay time arrives, the allowable operation time of the crane is reached, and then the crane is subjected to long-time continuous operation and needs maintenance, the delay closed contact switch of the first time relay is switched on, the alarm is electrified to send an alarm signal, a worker is reminded to control the crane to stop for maintenance, meanwhile, the control coil of the second time relay is electrified, and the control coil of the second time relay is arranged to avoid the worker not noticing the alarm The crane is not controlled to stop or the crane cannot stop immediately due to the fact that the crane cannot stop immediately in the working process, the delay time of the second time relay can be set to be buffering time, the buffering time is used for enabling workers to temporarily place objects carried by the crane to a safe position within the period of time, if the delay time of the second time relay arrives, the crane needs to be forced to stop immediately, then the delay closing contact switch of the second time relay is conducted, the control coil of the locking relay is electrified, the normally closed contact switch of the locking relay is disconnected, the power supply main circuit of the crane is disconnected, and the crane stops due to power failure. Therefore, the control system is provided with two mechanisms, the first delay time reminds workers to stop through the alarm when arriving, the second delay time is set as the buffer time, in order to avoid the crane from breaking down, the crane is controlled to stop forcibly when the second delay time arrives, the crane is stopped after being continuously used for a long time so as to maintain the crane, the failure rate of the crane is reduced, and the safety of the crane is improved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described as follows:
FIG. 1 is a circuit diagram of a control circuitry portion;
fig. 2 is a circuit diagram of a crane power main line.
Detailed Description
The embodiment provides a hoist lock quick-witted control system, includes: the system comprises a crane power supply main circuit, a crane starting manual switch 2, an intermediate relay, a crane operation relay, a locking relay, a first time relay, a second time relay, an alarm 10 and a control circuit.
The intermediate relay may be a conventional relay device including a control coil 3 and a normally open contact switch 6; the crane operation relay can be conventional relay equipment and comprises a control coil 4 and a normally open contact switch 13; the first time relay and the second time relay can be conventional time relay equipment, wherein the first time relay comprises a control coil 7 and a delay closing contact switch 8, and the second time relay comprises a control coil 9 and a delay closing contact switch 11; the latching relay may be a conventional relay device including a control coil 12 and a normally closed contact switch 14. The alarm 10 may be a conventional buzzer or audible and visual alarm.
The control circuit comprises a first control branch, a second control branch, a third control branch and a fourth control branch which are connected with a power supply 1 (the power supply 1 is a direct-current power supply, and the power supply voltage of the power supply 1 is set according to actual requirements).
As shown in fig. 1, the crane starting manual switch 2 and the control coil 3 are arranged in series on the first control branch, and the control coil 3 and the control coil 4 are arranged in parallel. Further, in order to indicate the operation state, a state indicator lamp 5 is further connected in series on the first control branch. The crane actuation manual switch 2 is used for manually controlling crane actuation, such as: and when an operator operates the crane to start the manual switch 2, the crane starts the manual switch 2 to be conducted, and the control coil 3 and the control coil 4 are electrified.
As shown in fig. 1, the normally open contact switch 6 and the control coil 7 are arranged in series on the second control branch, the delay closing contact switch 8, the control coil 9 and the alarm 10 are arranged in series on the third control branch, and the delay closing contact switch 11 and the control coil 12 are arranged in series on the fourth control branch.
As shown in fig. 2, the normally open contact switch 13 and the normally closed contact switch 14 are arranged in series on the crane power supply main line. One end of the crane power supply main line is connected with a power supply of the crane, such as: the other end of the single-phase alternating current or the three-phase alternating current is connected with a power supply end of the crane.
When the staff need start the hoist, operation hoist starts hand switch 2, makes hoist start hand switch 2 switch on, and status indicator lamp 5, control coil 3 and control coil 4 get electric, and status indicator lamp 5 lights. The normally open contact switch 13 is switched on, the crane power supply main line is switched on, and the crane starts to run.
The normally open contact switch 6 is switched on, and the control coil 7 is electrified. The first time relay is provided with delay time, the delay time is matched with the allowable operation time of the crane, so the delay time can be the maximum allowable time of the normal operation of the crane, when the delay time arrives, the maximum allowable time of the normal operation of the crane arrives, and further the crane continues to operate for a long time, the crane can not continue to operate, and the crane needs to be stopped for maintenance. When the delay time comes, the delay closing contact switch 8 is switched on, the alarm 10 is powered on to send an alarm signal, and a worker is reminded to control the crane to stop so as to carry out maintenance (wherein, the worker can manually close the main power supply of the crane or disconnect the crane to start the manual switch 2 to control the crane to stop).
If the staff does not notice the alarm signal sent by the alarm 10 or the crane is carrying articles when the delay time comes, the crane cannot be stopped immediately, and in order to solve the problem, a control coil 9 is arranged. When the time-delay closed contact switch 8 is conducted, the control coil 9 is electrified. The second time relay is provided with a delay time, specifically, the delay time is a buffering time, and is used for forcibly controlling the crane to stop when the buffering time arrives or the crane is carrying the articles and cannot stop immediately when the worker does not notice the alarm signal sent by the alarm 10, so that the buffering time plays an emergency role, that is, the crane tightly catches the carried articles and places the articles in a temporary safe area, and then the crane is controlled to stop. Therefore, the buffering time is usually less than the delay time set by the first time relay, i.e. the delay time set by the second time relay is less than the delay time set by the first time relay. It will be appreciated that the delay time provided by the second time relay is required to meet the time consumed to place the item being handled in the temporary safety zone. When the delay time of the second time relay arrives, the delay closing contact switch 11 is conducted, the control coil 12 is electrified, the normally closed contact switch 14 is disconnected, the crane power supply main line is disconnected, and the crane stops due to power failure. Therefore, when the delay time of the second time relay arrives, the crane is controlled to be forcibly stopped.
This control system sets up two mechanisms, reminds staff to shut down through alarm 10 when first delay time arrives to set up second delay time as buffer time, in order to avoid the hoist to break down, the forced shutdown of control hoist when second delay time arrives, the realization hoist is shut down after long-time continuous use and is maintained with the hoist, reduces the fault rate of the fault of hoist, promotes the security of hoist.
The above embodiments are only for describing the technical solution of the present invention in a specific embodiment, and any equivalent replacement and modification or partial replacement of the present invention without departing from the spirit and scope of the present invention should be covered by the claims of the present invention.
Claims (3)
1. A crane lock control system, comprising:
a crane power supply main line;
starting a manual switch by the crane;
an intermediate relay;
a crane operation relay;
a lock relay;
a first time relay;
a second time relay;
an alarm; and
the control circuit comprises a first control branch, a second control branch, a third control branch and a fourth control branch which are connected with a power supply;
the crane starting manual switch and the control coil of the intermediate relay are arranged on the first control branch in series, and the control coil of the intermediate relay and the control coil of the crane operating relay are arranged in parallel; the normally open contact switch of the intermediate relay and the control coil of the first time relay are arranged on the second control branch in series; the time delay closing contact switch of the first time relay, the control coil of the second time relay and the alarm are arranged on the third control branch in series; the time delay closing contact switch of the second time relay and the control coil of the locking relay are arranged on the fourth control branch in series; and the normally open contact switch of the crane operation relay and the normally closed contact switch of the crane locking relay are connected in series on the crane power supply main line.
2. The crane latch control system according to claim 1, further comprising a status indicator light disposed in series on the first control branch.
3. The crane lock control system as claimed in claim 1, wherein the alarm is an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689178.2U CN212101706U (en) | 2020-04-29 | 2020-04-29 | Crane locking control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020689178.2U CN212101706U (en) | 2020-04-29 | 2020-04-29 | Crane locking control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212101706U true CN212101706U (en) | 2020-12-08 |
Family
ID=73618382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020689178.2U Active CN212101706U (en) | 2020-04-29 | 2020-04-29 | Crane locking control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212101706U (en) |
-
2020
- 2020-04-29 CN CN202020689178.2U patent/CN212101706U/en active Active
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