CN211034944U - Mechanical brake abnormity detection controller of crown block lifting system - Google Patents
Mechanical brake abnormity detection controller of crown block lifting system Download PDFInfo
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- CN211034944U CN211034944U CN201921758037.5U CN201921758037U CN211034944U CN 211034944 U CN211034944 U CN 211034944U CN 201921758037 U CN201921758037 U CN 201921758037U CN 211034944 U CN211034944 U CN 211034944U
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- feedback point
- brake
- detection feedback
- controller
- contactor
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Abstract
the utility model discloses a crane plays to rise system mechanical braking anomaly detection controller of system, play to rise the system body including the crane, still include the P L C controller, the crane plays to rise to be provided with switch-on detection feedback point on the system body respectively, first brake contactor detects the feedback point, second brake contactor detects the feedback point, brake contactor output power detects feedback point and brake mechanism action detection feedback point, and switch-on detection feedback point, first brake contactor detects the feedback point, second brake contactor detects the feedback point, brake contactor output power detects the feedback point and brake mechanism action detection feedback point respectively with the signal input port of P L C controller in the corresponding interface electricity be connected, the signal output part of P L C controller connection result alarm assembly, this kind of crane plays to rise system mechanical braking anomaly detection controller, can be accurate detect the work anomaly of detection stopper, avoid the crane to play to rise the system because its mechanical braking system problem causes the incident to take place.
Description
Technical Field
The utility model relates to a crown block plays to rise system braking technical field, specifically is a crown block plays to rise system mechanical braking anomaly detection control ware.
Background
The control of the overhead travelling crane lifting system is a key part related to whether the overhead travelling crane can safely operate, and in the control of the lifting system, whether a brake can be normally opened and closed plays a crucial role in a lifting device of the overhead travelling crane. In order to ensure the working stability of the hoisting system of the overhead travelling crane, a double brake is generally adopted, and the hoisting system of the overhead travelling crane with large tonnage or special requirements adopts a double-motor driving four-brake contracting brake working mode to brake the hoisting system. Therefore, in each part of the brake, once one of the parts works abnormally, the brake cannot follow the lifting command of the lifting system to normally act, damage to the overhead travelling crane equipment is caused slightly, and the falling of a hoisted object is caused seriously to cause a great safety accident.
In order to solve the above problems, we propose a controller for detecting the mechanical braking abnormality of the overhead travelling crane lifting system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide an overhead traveling crane plays to rise unusual detection controller of system mechanical braking, in order to solve above-mentioned technical problem, the utility model provides a following technical scheme:
the utility model relates to a crane plays to rise system mechanical braking anomaly detection controller of system, play to rise the system body including the crane, still including the P L C controller that is used for crane to play to rise system body key position detection feedback control, be provided with switch closing detection feedback point on the crane plays to rise the system body respectively, first brake contactor detects the feedback point, second brake contactor detects the feedback point, brake contactor output power detects the feedback point and the brake mechanism action detects the feedback point, and switch closing detection feedback point, first brake contactor detects the feedback point, second brake contactor detects the feedback point, brake contactor output power detects the feedback point and the brake mechanism action detects the feedback point respectively with the interface electricity connection that corresponds in the signal input port of P L C controller, the signal output port connection result alarm subassembly of P L C controller.
preferably, the ascending and descending control positions of the crown block hoisting system body are respectively provided with an ascending main contactor detection feedback point and a descending main contactor detection feedback point, and the ascending main contactor detection feedback point and the descending main contactor detection feedback point are respectively electrically connected with the signal input port of the plc controller.
preferably, a reset port is arranged on the P L C controller, and the reset port is electrically connected with a reset button.
Preferably, the detection feedback point of the output power supply of the brake contactor comprises an intermediate relay, and the intermediate relay is electrically connected with the output power end of the contactor in the crane lifting system body through a wire.
Preferably, the result alarm assembly comprises three intermediate relays for displaying different results, and the three relays are respectively and correspondingly electrically connected with the interface at the signal output port.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the method comprises the steps that feedback detection is carried out on the working condition of equipment related to a crane lifting brake, and an operation instruction of a crane lifting system and a brake opening and closing delay time set value are combined, so that once a detection point fed back by the equipment related to the brake is abnormal and is out of the action time set range of a mechanical brake, the mechanical brake can be determined to work abnormally during the lifting operation, the lifting device system is required to be interlocked and stopped, the brake is immediately closed, and the operation of the crane is stopped to carry out troubleshooting treatment on faults of the crane; the mechanical brake abnormity detection controller of the overhead traveling crane hoisting system is in actual use on the overhead traveling crane, works reliably, can accurately detect the working abnormity of the brake, and avoids the occurrence of safety accidents caused by the problems of the mechanical brake system of the overhead traveling crane hoisting system.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
Fig. 1 is a schematic view of an assembly structure of a mechanical braking anomaly detection controller of a crown block lifting system of the present invention;
Fig. 2 is the utility model relates to a circuit connection structure schematic diagram of the unusual detection controller of overhead traveling crane system mechanical braking.
in the figure, 1-a crown block lifting system body, 2-a P L C controller, 3-a signal input port, 4-a signal output port, 5-a reset port, 6-a power switch closing detection feedback point, 7-a first brake contactor detection feedback point, 8-a second brake contactor detection feedback point, 9-a brake contactor output power detection feedback point, 91-an intermediate relay and 10-a brake mechanism action detection feedback point.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
as shown in fig. 1-2, a controller for detecting mechanical braking anomaly of a crane hoisting system comprises a crane hoisting system body 1, and further comprises a P L C controller 2 for detecting feedback control of key positions of the crane hoisting system body 1, wherein the crane hoisting system body 1 is provided with a power switch closing detection feedback point 6, a first brake contactor detection feedback point 7, a second brake contactor detection feedback point 8, a brake contactor output power detection feedback point 9, and a brake mechanism action detection feedback point 10, and the power switch closing detection feedback point 6, the first brake contactor detection feedback point 7, the second brake contactor detection feedback point 8, the brake contactor output power detection feedback point 9, and the brake mechanism action detection feedback point 10 are electrically connected with corresponding interfaces in a signal input port 3 of the P L C controller 2, and a signal output port 4 of the P L C controller 2 is connected with a result alarm component.
in this embodiment, the ascending and descending control positions of the crown block hoisting system body 1 are respectively provided with an ascending main contactor detection feedback point and a descending main contactor detection feedback point, and the ascending main contactor detection feedback point and the descending main contactor detection feedback point are respectively electrically connected with the signal input port 3 of the plc controller 2.
in this embodiment, a reset port 5 is provided on the plc controller 2, and the reset port 5 is electrically connected to a reset button.
In this embodiment, the brake contactor output power detection feedback point 9 includes an intermediate relay 91, and the intermediate relay 91 is electrically connected to the contactor output power end in the overhead traveling crane hoisting system body 1 through a wire.
In this embodiment, the result alarm assembly includes three intermediate relays for displaying different results, and the three relays are electrically connected to the interface at the signal output port 4, respectively.
The utility model discloses a principle and advantage: the mechanical brake abnormity detection controller of the overhead traveling crane hoisting system has the following working process:
in consideration of the fact that the opening and closing signals of the mechanical brake mechanism have different time delays, in order to fully ensure the stability of the detection signal of the overhead traveling crane lifting system mechanical brake abnormity detection controller and facilitate the realization of control logic, the embodiment adopts the small siemens type S7-200P L C to acquire the detection signal and realize the function;
The mechanical brake abnormity detection controller of the overhead traveling crane lifting system combines the feedback signals of the actions (KQ1, KQ2) of the lifting and descending power supply contactors of the overhead traveling crane lifting system body 1 to integrate the actual action conditions of each component of the brake so as to realize the judgment and control of the work abnormity of the brake;
The basic control logic of the overhead traveling crane lifting system mechanical brake abnormity detection controller is as follows: when the crown block lifting system body 1 is operated to ascend (KQ1) or descend (KQ2), relevant signals trigger action feedback signals (KM1-1 and KM2-1) of a power supply contactor of a brake, a voltage normal signal (KA1-1) output by the contactor and an action in-place signal of a mechanical brake (the delay of mechanical action is considered for the brake in-place signal, the delay time of opening and closing of the mechanical brake provided by a brake manufacturer is referred to, and a mechanical action delay value is set (generally 300 ms-600 ms) for the signal after the signal is acquired), namely a first brake contactor detection feedback point 7 detects and feeds back the action signal of a first brake contactor KM1, a second brake contactor detection feedback point 8 detects and feeds back the action signal of a second brake contactor KM2, and the brake contactors output the power supply detection feedback point, 9, detecting and feeding back whether the two-phase voltage output by the brake contactor is normal or not, and detecting and feeding back whether the action of the brake mechanism is in place or not by a brake mechanism action detection feedback point 10;
when a signal for ascending or descending the crown block lifting system body 1 exists, if a normal signal of a relevant signal collected on site is fed back to the PLC controller 2 at the moment, the PLC controller 2 immediately outputs a brake action abnormity interlocking stop signal from a (KA2) relay in the result alarm component through a signal output end 4;
when the hoisting of the crane hoisting system body 1 is completed, and no ascending (KQ1) or descending (KQ2) signal exists at the moment, if a brake is powered or is in an opening position signal in a field acquisition signal, a brake mechanism action detection feedback point 10 detects a signal and feeds the signal back to the PLC controller 2, at the moment, the PLC controller 2 immediately sends a tripping signal from a (KA4) relay in the result alarm assembly through a signal output end 4, and a brake main power supply air switch Q1 is tripped and protected through a circuit at a power switch closing detection feedback point 6;
when the two conditions occur, the P L C controller 2 sends out an interlocking signal (KA2) in time, and simultaneously sends out an alarm signal (KA3) of the abnormal work of the brake, so that an operator of the crown block is informed of stopping the operation in time, and a maintenance worker checks and processes the abnormal conditions, after the normal operation is confirmed, the operator carries out 'fault reset' on the reset port 5 on the P L C controller 2, and after the reset button (SB1) is pressed down for operation, the crown block can be hoisted normally.
In the embodiment, the first brake contactor detection feedback point 7 and the second brake contactor detection feedback point 8 are used for respectively detecting the action signals of the brake power switch-on contactors (KM1 and KM2), wherein the contactors KM1 and KM2 are connected in series (in an AND mode) when in a brake main loop, so that the power supply of the mechanical brake can be effectively disconnected when a contact sticking fault occurs in any one of the power supply contactors;
An intermediate relay 91 with 380V alternating current is connected to a three-phase power supply output by a brake power supply switch-on contactor in parallel, and is mainly responsible for collecting whether two-phase voltage output by the power supply contactor is normal or not, so that the phenomenon that although a brake contactor acts due to the problem of a contactor device, the contact of the brake contactor is not completely closed, so that the brake is opened is avoided;
A brake mechanism action detection feedback point 10 for detecting and feeding back the actual position where the brake mechanism acts in place is arranged on a mechanical brake in the crown block lifting system body 1, whether the brake mechanism acts normally or not and whether the mechanical brake is in an open state or not can be judged according to the change condition of the position of the mechanical brake, and the occurrence of safety accidents caused by the problems of the mechanical brake system of the crown block lifting system body 1 is avoided.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. the mechanical brake abnormity detection controller of the crown block lifting system comprises a crown block lifting system body (1) and is characterized by further comprising a P L C controller (2) used for detecting feedback control of key positions of the crown block lifting system body (1), wherein a power switch closing detection feedback point (6), a first brake contactor detection feedback point (7), a second brake contactor detection feedback point (8), a brake contactor output power detection feedback point (9) and a brake mechanism action detection feedback point (10) are respectively arranged on the crown block lifting system body (1), the power switch closing detection feedback point (6), the first brake contactor detection feedback point (7), the second brake contactor detection feedback point (8), the brake contactor output power detection feedback point (9) and the brake mechanism action detection feedback point (10) are respectively electrically connected with corresponding interfaces in a signal input port (3) of the P L C controller (2), and a signal output port (4) of the P L C controller (2) is connected with a result alarm component.
2. the overhead traveling crane hoisting system mechanical brake abnormality detection controller according to claim 1, characterized in that the ascending and descending control positions of the overhead traveling crane hoisting system body (1) are respectively provided with an ascending main contactor detection feedback point and a descending main contactor detection feedback point, and the ascending main contactor detection feedback point and the descending main contactor detection feedback point are respectively electrically connected with the signal input port (3) of the PLC controller (2).
3. the mechanical brake abnormality detection controller for the overhead traveling crane hoisting system according to claim 1, characterized in that a reset port (5) is provided on the PLC controller (2), and the reset port (5) is electrically connected with a reset button.
4. The overhead traveling crane hoisting system mechanical brake abnormality detection controller according to claim 1, characterized in that: the brake contactor output power supply detection feedback point (9) comprises an intermediate relay (91), and the intermediate relay (91) is electrically connected with a contactor output power supply end in the overhead travelling crane lifting system body (1) through a wire.
5. The overhead traveling crane hoisting system mechanical brake abnormality detection controller according to claim 1, characterized in that: the result alarm assembly comprises three intermediate relays for displaying different results, and the three relays are respectively and correspondingly electrically connected with the interface at the signal output port (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758037.5U CN211034944U (en) | 2019-10-20 | 2019-10-20 | Mechanical brake abnormity detection controller of crown block lifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758037.5U CN211034944U (en) | 2019-10-20 | 2019-10-20 | Mechanical brake abnormity detection controller of crown block lifting system |
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| Publication Number | Publication Date |
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| CN211034944U true CN211034944U (en) | 2020-07-17 |
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| CN201921758037.5U Expired - Fee Related CN211034944U (en) | 2019-10-20 | 2019-10-20 | Mechanical brake abnormity detection controller of crown block lifting system |
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| CN (1) | CN211034944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113050533A (en) * | 2021-03-15 | 2021-06-29 | 广西钢铁集团有限公司 | Antenna controller and control method thereof |
-
2019
- 2019-10-20 CN CN201921758037.5U patent/CN211034944U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113050533A (en) * | 2021-03-15 | 2021-06-29 | 广西钢铁集团有限公司 | Antenna controller and control method thereof |
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Granted publication date: 20200717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |