CN218950271U - Scraper monitoring device of scraper conveyor - Google Patents
Scraper monitoring device of scraper conveyor Download PDFInfo
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- CN218950271U CN218950271U CN202320092831.0U CN202320092831U CN218950271U CN 218950271 U CN218950271 U CN 218950271U CN 202320092831 U CN202320092831 U CN 202320092831U CN 218950271 U CN218950271 U CN 218950271U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The utility model belongs to the technical field of scraper conveying, and particularly relates to a scraper monitoring device of a scraper conveyor, which comprises proximity switches S1, S2 and S3 arranged at the tongue plate of a head frame of the scraper conveyor, time relays KT1, KT2 and KT3, intermediate relays J1, J2, J3, relays J4, J5, J6, J7 and a PLC (programmable logic controller), wherein the proximity switches S1, S2 and S3 are arranged parallel to the scraper, the proximity switch S2 is positioned at the central line of the scraper, and the proximity switches S1 and S3 are symmetrically arranged at two sides; according to the utility model, three proximity switches are arranged above the scraper conveyor, and various fault states of the scraper can be identified by utilizing the fault identification circuit, so that the monitoring efficiency of the scraper conveyor is improved.
Description
Technical Field
The utility model belongs to the technical field of scraper conveying, and particularly relates to a scraper monitoring device of a scraper conveyor.
Background
The scraper conveyor is widely used in underground coal mines, coal is transported through the scraper, phenomena such as shortage of the scraper, bad scraper, bending of the scraper and the like often occur in the using process, and if the scraper conveyor is not stopped and processed in time, the scraper conveyor is possibly damaged or even larger accident is caused, so that the manual scraper conveyor is required to monitor in real time. In addition, sometimes because of excessive coal on the scraper conveyor or bad scrapers being carried into the bottom of the chute, these incomplete scrapers are not easily found and their repair is laborious.
Patent application publication number CN2900431Y discloses a scraper conveyor protection device, which detects the scraper through two proximity switches fixed on a bracket, realizes detection of the inclined state of the scraper, and further carries out shutdown protection on the scraper conveyor, but cannot identify the states of missing, bending and the like of the scraper.
Disclosure of Invention
The utility model overcomes the defects existing in the prior art, and solves the technical problems that: the scraper monitoring device of the scraper conveyor can realize accurate on-line monitoring of the scraper state.
In order to solve the technical problems, the utility model adopts the following technical scheme: the scraper monitoring device of the scraper conveyor comprises proximity switches S1, S2 and S3 arranged at the tongue plate of the head frame of the scraper conveyor, time relays KT1, KT2 and KT3, intermediate relays J1, J2 and J3, relays J4, J5, J6 and J7 and a PLC controller, wherein the proximity switches S1, S2 and S3 are arranged parallel to the scraper, the proximity switch S2 is positioned at the central line of the scraper, and the proximity switches S1 and S3 are symmetrically arranged at two sides of the central line of the scraper;
the proximity switches S1, S2 and S3 are respectively connected with the time relays KT1, KT2 and KT3 in series and then connected in parallel at two ends of the power supply;
the time relay KT1 is connected with the intermediate relay J1 in series, and then is connected to the two ends of the power supply;
the normally open contact KT1-2 of the time relay KT1, the normally open contact KT2-2 of the time relay KT2 and the normally open contact KT3-2 of the time relay KT3 are connected in parallel and then connected with the intermediate relay J2 in series at two ends of a power supply;
normally open contacts KT1-3 and KT3-3 of the time relays KT1 and KT3 are connected in series and then connected with an intermediate relay J3 in series at two ends of a power supply;
the normally open contact J1-1 of the intermediate relay J1 and the normally open contact J2-1 of the intermediate relay J2 are connected with the relay J4 in series at two ends of the power supply;
the normally open contact J1-2 of the intermediate relay J1 and the normally open contact J2-2 of the intermediate relay J2 are connected with the relay J5 in series at two ends of the power supply;
the normally open contact J3-1 of the intermediate relay J3 is connected in series with the relay J6 and then connected in parallel with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5;
the normally closed contact J2-3 of the intermediate relay J2 is connected with the relay J7 in series and then connected with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5 in parallel;
the normally open contact J4-1 of the relay J4, the normally open contact J5-1 of the relay J5, the normally open contact J6-1 of the relay J6 and the normally open contact J7-1 of the relay J7 are respectively connected with the input end of the PLC, and the output end of the PLC is connected with the display module.
The scraper monitoring device of the scraper conveyor further comprises display lamps L1, L2, L3 and L4, wherein the display lamps L1, L2, L3 and L4 are respectively connected with normally open contacts J4-2, J5-3, J6-3 and J7-3 of relays J4, J5, J6 and J7 in series and then are connected with two ends of a power supply.
The scraper monitoring device of the scraper conveyor further comprises an encoder, wherein the encoder is used for measuring displacement signals of the scraper conveyor, and the output end of the encoder is connected with the input end of the PLC.
The scraper monitoring device of the scraper conveyor further comprises a power module, wherein the power module is used for converting an external 220V alternating current power supply into direct current voltage and then supplying power to the circuit.
The scraper monitoring device of the scraper conveyor further comprises a relay J8, a relay J9, a normal indicator lamp L5 and a defect indicator lamp L6, wherein one ends of the relay J8 and the relay J9 are respectively connected with the output end of the PLC, and the other ends of the relay J8 and the relay J9 are connected with the positive electrode of the power supply module;
after the normal indicator lamp L5 is connected with the normally open contact J8-1 of the relay J8 in series, one end of the normal indicator lamp L5 is connected with the positive electrode of the power supply module, the other end of the normal indicator lamp L6 is connected with the negative electrode of the power supply module, one end of the defect indicator lamp L6 is connected with the normally open contact J9-1 of the relay J9 in series, the other end of the defect indicator lamp L6 is connected with the positive electrode of the power supply module, and the other end of the defect indicator lamp L6 is connected with the negative electrode of the power supply module.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a scraper monitoring device of a scraper conveyor, which is characterized in that three proximity switches are arranged above the scraper conveyor, fault signals are identified by the proximity switches, various fault states of the scraper are visually displayed by a fault identification circuit, so that the online monitoring of the scraper conveyor can be realized, and in addition, the positioning of the fault position of the scraper can be realized by an encoder and the proximity switches.
Drawings
FIG. 1 is a diagram of several fault conditions that may occur with existing scraper conveyors;
FIG. 2 is a schematic diagram illustrating the installation of a proximity switch in accordance with one embodiment of the present utility model;
FIG. 3 is a schematic diagram of the circuit connections of a proximity switch in an embodiment of the present utility model;
FIG. 4 is a schematic diagram of the circuit connection of an intermediate circuit according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of circuit connections of a fault identification circuit in an embodiment of the present utility model;
FIG. 6 is a schematic diagram of circuit connections of a display circuit according to an embodiment of the utility model;
FIG. 7 is a schematic diagram of circuit connection of a PLC control circuit according to an embodiment of the present utility model;
fig. 8 is a schematic circuit diagram of a control conveyor in an embodiment of the utility model.
In the figure: 1 is a nose frame tongue plate, 2 is a scraping plate, and 3 is a proximity switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 2, the embodiment of the utility model provides a scraper monitoring device of a scraper conveyor, which comprises proximity switches S1, S2 and S3 arranged at the tongue plate of a head frame of the scraper conveyor, time relays KT1, KT2 and KT3, intermediate relays J1, J2 and J3, relays J4, J5, J6 and J7 and a PLC controller as shown in fig. 3-5. The proximity switches S1, S2 and S3 are arranged parallel to the scraping plate, the proximity switch S2 is positioned on the center line of the scraping plate, and the proximity switches S1 and S3 are symmetrically arranged on two sides.
In this embodiment, as shown in fig. 3, the proximity switches S1, S2 and S3 are connected in series with the time relays KT1, KT2 and KT3, respectively, and then connected in parallel to two ends of the power supply.
As shown in fig. 4, in this embodiment, normally open contacts KT1-1, KT2-1, KT3-1 of the time relays KT1, KT2, KT3 are connected in series with an intermediate relay J1 and then connected to two ends of a power supply; normally open contacts KT1-2, KT2-2 and KT3-2 of the time relays KT1, KT2 and KT3-2 are connected in parallel and then connected with an intermediate relay J2 in series at two ends of a power supply; the normally open contacts KT1-3 and KT3-3 of the time relays KT1 and KT3 are connected in series and then connected with the intermediate relay J3 in series at two ends of a power supply. The scraper conveyor speed is about 0.88 m/s, the scraper width is about 40mm, if the signal is transmitted by the proximity switch, the time is too short and the misoperation is feared, so the proximity switch is used for controlling the power-off delay relay, the time is 2 seconds, and the signal of the power-off delay relay is used for counting.
As shown in fig. 5, normally open contacts J1-1, J2-1 of the intermediate relays J1, J2 are connected in series with a relay J4 at both ends of a power supply; normally open contacts J1-2 and J2-2 of the intermediate relays J1 and J2 are connected with a relay J5 in series at two ends of a power supply; the normally open contact J3-1 of the intermediate relay J3 is connected in series with the relay J6 and then connected in parallel with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5; the normally closed contact J2-3 of the intermediate relay J2 is connected with the relay J7 in series and then connected with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5 in parallel;
normally open contacts J4-1, J5-1, J6-1 and J7-1 of relays J4, J5, J6 and J7 are respectively connected with the input end of the PLC, and the output end of the PLC is connected with the display module.
Further, the scraper monitoring device of the scraper conveyor in this embodiment further includes a display circuit, as shown in fig. 6, where the display circuit includes display lamps L1, L2, L3, and L4, and the display lamps L1, L2, L3, and L4 are connected in series with normally open contacts J4-2, J5-3, J6-3, and J7-3 of relays J4, J5, J6, and J7 respectively, and then are connected to two ends of a power supply. The display circuit can visually display each state of the current scraping plate.
Further, the scraper monitoring device of the scraper conveyor further comprises an encoder, wherein the encoder is arranged in the middle of a load wheel pair of the machine head speed reducer, one end of the encoder is installed through a wheel pair fastening bolt by using angle iron, and displacement signals of the scraper can be measured through the encoder. As shown in fig. 7, the output end of the encoder is connected with the input end of the PLC controller. In addition, for the scraper conveyor with the short-circuit chain and the short-circuit scraper, the proximity switch of the embodiment can scan the short-circuit scraper of the scraper conveyor, and according to the short-circuit scraper signal input to the PLC controller by the contact J4-1 of the relay J4, the starting position of the scraper conveyor can be determined and positioned. In addition, the length of the scraper conveyor can be calculated according to the scraper conveyor speed and the time interval from the twice scanning of the proximity switch to the short-circuiting scraper. Moreover, the displacement signal is obtained by measuring the encoder, so that the positions of the bad scraper and the lacking scraper can be positioned.
Further, the scraper monitoring device of the scraper conveyor further comprises a power module, wherein the power module is used for converting an external 220V alternating current power supply into direct current voltage and then supplying power to the circuit.
Further, as shown in fig. 7, the scraper monitoring device of the scraper conveyor of the embodiment further comprises a relay J8, a relay J9, a normal indicator light L5 and a defect indicator light L6, wherein one end of the relay J8 and one end of the relay J9 are respectively connected with the output end of the PLC controller, and the other end of the relay J9 is connected with the positive electrode of the power supply module; after the normal indicator lamp L5 is connected with the normally open contact J8-1 of the relay J8 in series, one end of the normal indicator lamp L5 is connected with the positive electrode of the power supply module, the other end of the normal indicator lamp L6 is connected with the negative electrode of the power supply module, one end of the defect indicator lamp L6 is connected with the normally open contact J9-1 of the relay J9 in series, the other end of the defect indicator lamp L6 is connected with the positive electrode of the power supply module, and the other end of the defect indicator lamp L6 is connected with the negative electrode of the power supply module.
Further, as shown in fig. 7, the scraper monitoring device of the scraper conveyor of the embodiment further comprises a relay J10, wherein one end of the relay J10 is connected with the output end of the PLC controller through a selection button, and the other end of the relay J is connected with the power supply anode of the power supply module; as shown in fig. 8, the normally open contact J10-1 of the relay J10 is connected in parallel with the start button of the scraper conveyor, and the normally open contact J10-2 is connected in parallel with the start button of the scraper conveyor. Through setting up relay J10, then when closed selection button, relay J10 can be according to the scraper blade state, automatic control scraper conveyor's operating condition, makes the scraper conveyor automatic stop in the position that the scraper blade damaged, the maintenance of being convenient for.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (5)
1. The scraper monitoring device of the scraper conveyor is characterized by comprising proximity switches S1, S2 and S3 arranged at the tongue plate of the head frame of the scraper conveyor, time relays KT1, KT2 and KT3, intermediate relays J1, J2 and J3, relays J4, J5, J6 and J7 and a PLC controller, wherein the proximity switches S1, S2 and S3 are arranged in parallel with the scraper, the proximity switch S2 is positioned at the central line of the scraper, and the proximity switches S1 and S3 are symmetrically arranged at two sides of the scraper;
the proximity switches S1, S2 and S3 are respectively connected with the time relays KT1, KT2 and KT3 in series and then connected in parallel at two ends of the power supply;
the time relay KT1 is connected with the intermediate relay J1 in series, and then is connected to the two ends of the power supply;
the normally open contact KT1-2 of the time relay KT1, the normally open contact KT2-2 of the time relay KT2 and the normally open contact KT3-2 of the time relay KT3 are connected in parallel and then connected with the intermediate relay J2 in series at two ends of a power supply;
normally open contacts KT1-3 and KT3-3 of the time relays KT1 and KT3 are connected in series and then connected with an intermediate relay J3 in series at two ends of a power supply;
the normally open contact J1-1 of the intermediate relay J1 and the normally open contact J2-1 of the intermediate relay J2 are connected with the relay J4 in series at two ends of the power supply;
the normally open contact J1-2 of the intermediate relay J1 and the normally open contact J2-2 of the intermediate relay J2 are connected with the relay J5 in series at two ends of the power supply;
the normally open contact J3-1 of the intermediate relay J3 is connected in series with the relay J6 and then connected in parallel with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5;
the normally closed contact J2-3 of the intermediate relay J2 is connected with the relay J7 in series and then connected with a series circuit of the normally open contact J2-2 of the intermediate relay J2 and the relay J5 in parallel;
the normally open contact J4-1 of the relay J4, the normally open contact J5-1 of the relay J5, the normally open contact J6-1 of the relay J6 and the normally open contact J7-1 of the relay J7 are respectively connected with the input end of the PLC, and the output end of the PLC is connected with the display module.
2. The scraper monitoring device of the scraper conveyor according to claim 1, further comprising display lamps L1, L2, L3 and L4, wherein the display lamps L1, L2, L3 and L4 are respectively connected with normally open contacts J4-2, J5-3, J6-3 and J7-3 of relays J4, J5, J6 and J7 in series and then are connected with two ends of a power supply.
3. The scraper monitoring device of claim 1, further comprising an encoder for measuring a displacement signal of the scraper conveyor, wherein an output of the encoder is connected to an input of the PLC controller.
4. The scraper monitoring device of claim 1, further comprising a power module, wherein the power module is configured to convert an external 220V ac power source into a dc voltage and then power the circuit.
5. The scraper monitoring device of the scraper conveyor according to claim 4, further comprising a relay J8, a relay J9, a normal indicator light L5 and a defect indicator light L6, wherein one end of the relay J8 and one end of the relay J9 are respectively connected with the output end of the PLC, and the other end of the relay J9 is connected with the positive electrode of the power supply module;
after the normal indicator lamp L5 is connected with the normally open contact J8-1 of the relay J8 in series, one end of the normal indicator lamp L5 is connected with the positive electrode of the power supply module, the other end of the normal indicator lamp L6 is connected with the negative electrode of the power supply module, one end of the defect indicator lamp L6 is connected with the normally open contact J9-1 of the relay J9 in series, the other end of the defect indicator lamp L6 is connected with the positive electrode of the power supply module, and the other end of the defect indicator lamp L6 is connected with the negative electrode of the power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320092831.0U CN218950271U (en) | 2023-01-31 | 2023-01-31 | Scraper monitoring device of scraper conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320092831.0U CN218950271U (en) | 2023-01-31 | 2023-01-31 | Scraper monitoring device of scraper conveyor |
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| Publication Number | Publication Date |
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| CN218950271U true CN218950271U (en) | 2023-05-02 |
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| CN202320092831.0U Active CN218950271U (en) | 2023-01-31 | 2023-01-31 | Scraper monitoring device of scraper conveyor |
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- 2023-01-31 CN CN202320092831.0U patent/CN218950271U/en active Active
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