CN215733451U - Overhead traveling crane cable protector - Google Patents
Overhead traveling crane cable protector Download PDFInfo
- Publication number
- CN215733451U CN215733451U CN202122202645.1U CN202122202645U CN215733451U CN 215733451 U CN215733451 U CN 215733451U CN 202122202645 U CN202122202645 U CN 202122202645U CN 215733451 U CN215733451 U CN 215733451U
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- CN
- China
- Prior art keywords
- crown block
- wire rope
- steel wire
- overhead traveling
- traveling crane
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Abstract
The utility model discloses a crown block cable protector which comprises a slide rail, a steel wire rope and a pull rope switch, wherein the slide rail is fixed at the bottom of a slide way of a crown block, a plurality of slide rings are arranged on the slide rail in a sliding manner, the steel wire rope and a power supply cable penetrate through the slide rings, the length of the steel wire rope is smaller than that of the power supply cable, one end of the steel wire rope is fixed on a crown block walking motor, and the other end of the steel wire rope is fixed on a pull ring of the pull rope switch. The advantages are that: wire rope through the shortness in power cable is straightened in advance, triggers to drag the stay cord switch disconnection, and the disconnection of overhead traveling crane control circuit, overhead traveling crane main power supply stop the power supply simultaneously, and the overhead traveling crane stops in time, prevents effectively that overhead traveling crane walking motor from dragging power cable absolutely, improves the security, avoids power cable to be dragged and restores after disconnected, saves time, raises the efficiency, ensures can also normal operating.
Description
The technical field is as follows:
the utility model relates to the technical field of crown block protection, in particular to a crown block cable protector.
Background art:
the bridge crane is a bridge crane, also called overhead traveling crane, in which a bridge runs on an overhead rail. The power box is connected with the power cable and the travelling motor of the overhead travelling crane. The length of power cable is crossed to current overhead traveling crane walking motor's stroke, during the in-service use, because operating personnel misoperation, only notice overhead traveling crane walking motor's stroke, not notice power cable length, lead to taking place walking motor motionless and cable and be dragged disconnected phenomenon, and frequently take place in the overhead traveling crane uses, seriously influence the plant use, overhead traveling crane power cable is dragged disconnected back dangerous degree high, cause the personnel to electrocute easily, secondly, repair the difficulty after disconnected overhead traveling crane power cable is dragged, the operation risk of ascending a height is big.
The utility model has the following contents:
the utility model aims to provide a crown block cable protector.
The utility model is implemented by the following technical scheme:
a crown block cable protector comprises a slide rail, a steel wire rope and a pull rope switch, wherein the slide rail is fixed at the bottom of a crown block slideway and arranged along the length direction of the crown block slideway;
the normally closed contact of the pull rope switch, the normally open contact of the crown block main circuit starting switch and the coil of the crown block main power supply contactor are connected in series to form a closed circuit, and the normally open contact of the crown block main power supply contactor is connected in parallel at two ends of the normally open contact of the crown block main circuit starting switch.
Preferably, the portable emergency alarm further comprises an audible and visual alarm, and the audible and visual alarm is connected with the normally open contact of the pull rope switch in series.
The utility model has the advantages that: wire rope through the shortness in power cable is straightened in advance, triggers to drag the stay cord switch disconnection, and the disconnection of overhead traveling crane control circuit, overhead traveling crane main power supply stop the power supply simultaneously, and the overhead traveling crane stops in time, prevents effectively that overhead traveling crane walking motor from dragging power cable absolutely, improves the security, avoids power cable to be dragged and restores after disconnected, saves time, raises the efficiency, ensures can also normal operating.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall use of the present invention;
fig. 3 is a control circuit diagram of the pull-cord switch.
In the figure: the device comprises a sliding rail 1, a steel wire rope 2, a sliding ring 3, a power cable 4, a pull ring 5, a pull rope switch ES, a crown block main loop starting switch SB, a crown block main power supply contactor KM and an audible and visual alarm HL.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 3, a crown block cable protector comprises a slide rail 1, a steel wire rope 2 and a pull rope switch ES, wherein the slide rail 1 is fixed at the bottom of a crown block slideway and arranged along the length direction of the crown block slideway, the slide rail 1 is connected with a plurality of slide rings 3 in a sliding way, the steel wire rope 2 and a power cable 4 pass through the plurality of slide rings 3, the length of the steel wire rope 2 is less than that of the power cable 4, one end of the steel wire rope 2 is fixed on a crown block walking motor, the other end of the steel wire rope 2 is fixed on a pull ring 5 of the pull rope switch ES arranged adjacent to a power box, when the crown block walking motor drives one end of the power cable 4 to move, one end of the steel wire rope 2 is driven to move, the steel wire rope 2 and the power cable 4 slide on the slide rail 1 through the slide rings 3 to play a role in suspension and support, when the crown block walking motor moves to the maximum stroke, the steel wire rope 2 is straightened, and at this time, because the power cable 4 is longer than the steel wire rope 2, therefore, the steel wire rope 2 is not straightened, when the steel wire rope 2 is continuously pulled or even broken, the other end of the steel wire rope 2 pulls the pull ring 5 of the pull-cord switch ES to enable the pull-cord switch ES to act, the pull-cord switch ES is broken, a crown block control loop is broken, a main power supply of the crown block stops supplying power at the same time, and the crown block stops in time, so that the power cable 4 is effectively prevented from being pulled off by a traveling motor of the crown block, the safety is improved, the power cable 4 is prevented from being repaired after being pulled off, the time is saved, the efficiency is improved, and the normal operation can be ensured;
the normally closed contact of the pull rope switch ES, the normally open contact of the crown block main circuit starting switch SB and the coil of the crown block main power supply contactor KM are connected in series to form a closed circuit, the normally open contact of the crown block main power supply contactor KM is connected in parallel at two ends of the normally open contact of the crown block main circuit starting switch SB, the crown block main circuit starting switch SB and the crown block main power supply contactor KM are common components in the existing crown block control circuit, and the coil of the crown block main power supply contactor KM is connected in series with the existing crown block control circuit.
The alarm device also comprises an audible and visual alarm HL, the audible and visual alarm HL is connected with a normally open contact of the pull rope switch ES in series, and the audible and visual alarm HL is switched on when the pull rope switch ES is switched off, so that the occurrence of faults is reminded in time.
The working principle is as follows: when the crown block is normally used, a crown block main circuit starting switch SB is pressed, the circuit is switched on, a crown block main power supply contactor KM coil is electrified, a crown block main power supply contactor KM normally open contact is closed, a crown block control circuit is electrified, a crown block main power supply supplies power, and a crown block walking motor can drive the crown block to operate; when the overhead traveling crane walking motor drove power cable 4's one end and removes, drive wire rope 2's one end simultaneously and remove, when overhead traveling crane walking motor went on to the maximum stroke, wire rope 2 was straightened, and at this moment because power cable 4 is longer than wire rope 2, consequently there is the surplus not straightened, when wire rope 2 continued to be dragged even by the break-out, wire rope 2's the other end was dragged the pull ring 5 of stay cord switch ES and is made the action of stay cord switch ES, stay cord switch ES breaks off, overhead traveling crane control circuit disconnection, the overhead traveling crane main power supply stops the power supply simultaneously, the overhead traveling crane parks in time, switch-on audible-visual annunciator HL when stay cord switch ES action was broken off, in time remind the trouble to take place.
When the operator hears the alarm, the error operation is corrected, the pull-cord switch ES is reset after the steel wire rope 2 is replaced, the alarm disappears, and the overhead crane can be restarted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A crown block cable protector is characterized by comprising a slide rail, a steel wire rope and a pull rope switch, wherein the slide rail is fixed at the bottom of a crown block slideway and arranged along the length direction of the crown block slideway;
the normally closed contact of the pull rope switch, the normally open contact of the crown block main circuit starting switch and the coil of the crown block main power supply contactor are connected in series to form a closed circuit, and the normally open contact of the crown block main power supply contactor is connected in parallel at two ends of the normally open contact of the crown block main circuit starting switch.
2. A crown block cable protector according to claim 1 in which: the alarm device also comprises an audible and visual alarm which is connected with the normally open contact of the pull rope switch in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122202645.1U CN215733451U (en) | 2021-09-13 | 2021-09-13 | Overhead traveling crane cable protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122202645.1U CN215733451U (en) | 2021-09-13 | 2021-09-13 | Overhead traveling crane cable protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215733451U true CN215733451U (en) | 2022-02-01 |
Family
ID=80018797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122202645.1U Active CN215733451U (en) | 2021-09-13 | 2021-09-13 | Overhead traveling crane cable protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215733451U (en) |
-
2021
- 2021-09-13 CN CN202122202645.1U patent/CN215733451U/en active Active
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