CN216272749U - Dry coal shed bridge type grab crane trolley line power supply system - Google Patents
Dry coal shed bridge type grab crane trolley line power supply system Download PDFInfo
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- CN216272749U CN216272749U CN202122828940.8U CN202122828940U CN216272749U CN 216272749 U CN216272749 U CN 216272749U CN 202122828940 U CN202122828940 U CN 202122828940U CN 216272749 U CN216272749 U CN 216272749U
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- power supply
- power
- trolley line
- supply system
- sliding contact
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Abstract
The utility model discloses a dry coal shed bridge type grab bucket crane trolley line power supply system, and relates to the technical field of coal storage and transportation. This power supply system includes: a trolley line arranged along the equipment moving track; the power receiving sliding contact block is arranged on the equipment and matched with the sliding contact line in a sliding way to obtain power from the sliding contact line; the power supply is electrically connected with the sliding contact line and supplies power to the sliding contact line; wherein, a plurality of the power supplies are provided, and the power supplies are connected at different positions of the trolley line. The power supply system reduces the voltage drop of the trolley line, improves the reliability of the power supply, reduces the power failure of the power supply trip of the trolley line of the bridge type grab crane, and improves the operation and running safety of the bridge type grab crane.
Description
Technical Field
The utility model relates to the technical field of coal storage and transportation, in particular to a power supply system for a trolley line of a bridge type grab bucket crane of a dry coal shed.
Background
A bridge grab crane is called a bridge grab for short, and is common coal yard piling and taking equipment in a coal-fired power plant.
The bridge type grab crane mainly comprises a box-shaped bridge frame, a grab trolley, a cart running mechanism, a cab and an electrical control system, and is powered by a sliding contact line. In daily operation, frequent operations of opening and closing of a grab bucket, lifting and moving of the grab bucket and the like of a bridge type grab bucket crane often cause tripping and power failure of a trolley wire power supply.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a dry coal shed bridge type grab crane trolley line power supply system, which solves the defects in the related art at least to a certain extent.
The inventor finds that the reasons for the power failure caused by the tripping of the power supply of the slide wire of the bridge type grab bucket crane of the dry coal shed include: 1) the voltage of a trolley line of the bridge type grab crane is greatly reduced, so that a current overload power switch trips when the bridge type grab crane is started; 2) when the grab bucket is operated to open and close, the starting current causes large voltage reduction amplitude, and causes tripping of a power switch; 3) in the moving process of the bridge type grab bucket crane, the voltage is reduced due to the jumping of the power receiving sliding contact block, and the power switch is tripped. On the basis, the inventor proposes that multiple power supplies are adopted for supplying power, and the multiple power supplies are connected to different positions of the sliding contact line, so that the voltage drop of the sliding contact line of the bridge type grab crane is reduced, the tripping phenomenon caused by large voltage drop is reduced, and the tripping phenomenon caused by current overload when the bridge type grab crane is started, and the grab is opened or closed is reduced.
The technical scheme adopted by the utility model is as follows:
the utility model provides a dry coal canopy bridge type grab crane wiping line power supply system which includes:
a trolley line arranged along the equipment moving track;
the power receiving sliding contact block is arranged on the equipment and matched with the sliding contact line in a sliding way to obtain power from the sliding contact line; and
the power supply is electrically connected with the sliding contact line and supplies power to the sliding contact line;
wherein, a plurality of the power supplies are provided, and the power supplies are connected at different positions of the trolley line.
In the dry coal shed bridge type grab crane trolley line power supply system, preferably, one of the power supplies is a 380V coal conveying I section of the coal conveying distribution room, and the other power supply is a 380V coal conveying II section of the coal conveying distribution room.
In the dry coal shed bridge type grab crane trolley line power supply system, preferably, a plurality of the power supplies are respectively provided with an intelligent air circuit breaker.
In the above-mentioned dry coal shed bridge type grab crane trolley line power supply system, preferably, a plurality of the power supplies are respectively provided with a microcomputer relay protection device.
In the dry coal shed bridge type grab crane trolley line power supply system, the number of the power supplies is preferably two.
In the dry coal shed bridge type grab crane trolley line power supply system, preferably, one of the power supplies is connected to the position of one trisection point of the trolley line, and the other power supply is connected to the position of the other trisection point of the trolley line.
Compared with the prior art, the utility model has at least the following beneficial effects:
compared with single power supply, the power supply system reduces the voltage drop of the trolley line, improves the reliability of the power supply, reduces the power failure of the trolley line of the bridge type grab crane during tripping, and improves the operation and running safety of the bridge type grab crane.
After the intelligent air circuit breaker and the microcomputer relay protection device are further configured, faults can be rapidly and accurately removed, and the power failure range is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a dry coal shed bridge grab crane trolley line power supply system;
reference numerals:
1. a 380V electricity distribution room;
11. conveying coal at a section I at 380V;
12. a 380V coal conveying section II;
k1, a first intelligent air circuit breaker;
k2, second intelligent air circuit breaker;
2. a dry coal shed;
21. a trolley line;
22. dry coal shed #4 column;
23. dry coal shed #31 column.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
Referring to fig. 1, in this embodiment, the power supply system for the trolley line of the bridge type grab bucket crane for dry coal shed includes: the coal conveying system comprises a sliding contact line 21 and two power supplies, wherein the two power supplies are a 380V coal conveying I section 11 and a 380V coal conveying II section 12 of a 380V power distribution room 1 respectively, and the two power supplies jointly supply power to the sliding contact line 21.
The trolley line 21 is arranged in the dry coal shed 2, and is particularly arranged along a moving track of the bridge type grab bucket crane.
Wherein, 380V coal conveying I section 11 is connected with the position of the trolley line 21, which is positioned on the #31 column 23 of the dry coal shed, through a cable, and 380V coal conveying II section 12 is connected with the position of the trolley line 21, which is positioned on the #4 column 22 of the dry coal shed, through a cable.
The bridge type grab crane is provided with an electric sliding contact block, the electric sliding contact block is in sliding fit with a sliding contact line 21, and the electric power is taken from the sliding contact line 21 and is provided for the bridge type grab crane.
Further still be provided with first intelligent air circuit breaker K1 in 380V coal conveying I section 11, still be provided with second intelligent air circuit breaker K2 in 380V coal conveying II section 12. When interphase short circuit, overload and ground fault occur in the trolley wire 21 of the bridge type grab bucket crane, the fault can be rapidly removed, and the power failure range is reduced.
Further, microcomputer relay protection devices can be respectively arranged on the two power supplies. The hardware of the microcomputer relay protection device is a computer, and consists of hardware and software, various complex functions are realized by corresponding programs, a power supply can be monitored, and an alarm can be given in time when an abnormality occurs.
It should be noted that, in the present invention, the voltage drop of the trolley wire 21 can be reduced to some extent as long as the connection positions of the two power supplies on the trolley wire 21 are different. When one of the power supplies is connected to the position of one trisection point of the trolley line 21 and the other power supply is connected to the position of the other trisection point of the trolley line 21, the effect of reducing the voltage drop of the trolley line 21 is better. In addition, the above-described effects can be achieved by connecting two or more power supplies to different positions of the trolley wire 21.
The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.
Claims (6)
1. A dry coal shed bridge type grab crane trolley line power supply system comprises:
a trolley line arranged along the equipment moving track;
the power receiving sliding contact block is arranged on the equipment and matched with the sliding contact line in a sliding way to obtain power from the sliding contact line; and
the power supply is electrically connected with the sliding contact line and supplies power to the sliding contact line;
the method is characterized in that: there are a plurality of said power sources connected at different locations on said trolley line.
2. The dry coal shed bridge grab crane trolley line power supply system of claim 1, characterized in that: one of the power supplies is a 380V coal conveying I section of the coal conveying distribution room, and the other power supply is a 380V coal conveying II section of the coal conveying distribution room.
3. The dry coal shed bridge grab crane trolley line power supply system of claim 1, characterized in that: a plurality of the power supplies are each provided with an intelligent air circuit breaker.
4. The dry coal shed bridge grab crane trolley line power supply system of claim 1, characterized in that: and the power supplies are respectively provided with a microcomputer relay protection device.
5. The dry coal shed bridge grab crane trolley line power supply system of claim 1, characterized in that: the number of the power supplies is two.
6. The dry coal shed bridge grab crane trolley line power supply system of claim 5, characterized in that: one of the power supplies is connected at the position of one trisection point of the trolley line, and the other power supply is connected at the position of the other trisection point of the trolley line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122828940.8U CN216272749U (en) | 2021-11-17 | 2021-11-17 | Dry coal shed bridge type grab crane trolley line power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122828940.8U CN216272749U (en) | 2021-11-17 | 2021-11-17 | Dry coal shed bridge type grab crane trolley line power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216272749U true CN216272749U (en) | 2022-04-12 |
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ID=81035841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122828940.8U Active CN216272749U (en) | 2021-11-17 | 2021-11-17 | Dry coal shed bridge type grab crane trolley line power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216272749U (en) |
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2021
- 2021-11-17 CN CN202122828940.8U patent/CN216272749U/en active Active
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