CN211225239U - Scraper operation alarm device - Google Patents
Scraper operation alarm device Download PDFInfo
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- CN211225239U CN211225239U CN201922233457.8U CN201922233457U CN211225239U CN 211225239 U CN211225239 U CN 211225239U CN 201922233457 U CN201922233457 U CN 201922233457U CN 211225239 U CN211225239 U CN 211225239U
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- proximity switch
- trigger
- relay
- warning device
- response piece
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Abstract
The utility model discloses a scrape trigger operation alarm device, including scraping trigger, proximity switch, response piece and PLC cabinet, proximity switch installs the first side at scraping trigger aircraft nose position shell, and response piece fixed mounting is in the second side of scraping the trigger end cover, and first side is relative with the second side, has certain space between proximity switch and the response piece, and proximity switch is connected with PLC cabinet electricity. The device can send out the warning when scraping trigger trouble to response piece and proximity switch set up in the outside of scraper blade machine shell, and proximity switch can not receive the interference and can not damage because of the collision.
Description
Technical Field
The utility model relates to a scrape trigger technical field, concretely relates to scrape trigger operation alarm device.
Background
The scraper machine is common mechanical transportation equipment, and is large in transportation capacity and good in sealing performance, so that in practical application, the scraper machine is commonly used for transporting dust generated by a production line, the working environment of operators can be improved, and the environmental pollution caused by dust leakage can be prevented. However, the scraper chain belt drives the scraper to realize transportation, so that the conditions of pressing and breaking of the scraper chain and the like easily occur when the scraper is improperly used, and when the above-mentioned unexpected conditions occur, the main control room cannot timely detect the situation, cannot timely remove faults, easily causes ash overflow, influences normal production and causes environmental protection accidents.
Among the prior art, mainly judge whether the chain splits through the time interval that the scraper blade that scrapes the trigger is close to proximity switch through installation proximity switch comes the response in scraping the trigger casing, but the proximity switch of above-mentioned device receives the interference of the article of transporting easily in scraping the trigger casing, causes the signal inaccurate, and proximity switch probably leads to damaging with the scraper blade collision, also can influence the testing result.
To above circumstances, chinese patent CN203601965U detects the operation condition of scraper blade through rotating assembly to this operating condition who judges the scraper blade machine, but the device is bulky, and the installation is complicated, and rotating assembly's contact lever may contact with the transportation article, produces the false signal, and rotating assembly's contact lever frequently collides with the scraper blade in addition, all can cause the damage to contact lever and scraper blade.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a scrape trigger operation alarm device can detect and scrape the condition such as trigger chain rupture, push down, does not receive the interference of scraping the article that trigger transported, and the detected signal is accurate to can not cause the damage of equipment because of the collision.
The utility model discloses a solve above-mentioned technical problem, proposed following technical scheme:
in a first aspect, the embodiment of the utility model provides a scrape trigger operation alarm device, including scraping trigger, proximity switch, response piece and PLC cabinet, proximity switch installs scrape the first side of trigger aircraft nose position shell, response piece fixed mounting be in scrape the second side of trigger end cover, the first side with the second side is relative, proximity switch with there is certain space between the response piece, proximity switch with the PLC cabinet electricity is connected.
Adopt above-mentioned implementation, when scraping trigger chain breakage or pushing down, the response piece can't be close to proximity switch at the time of regulation, and proximity switch can't feed back the signal to PLC control system in the time interval of regulation, and PLC control system considers scraping trigger operation trouble, sends the warning model. The proximity switch is arranged outside the scraper conveyor shell and is not interfered by transported articles, the contact switch cannot be collided, and the alarm device can detect signals accurately and cannot be damaged due to collision.
With reference to the first aspect, in a first possible implementation manner of the first aspect, a relay is disposed in the PLC cabinet, and the proximity switch and the relay are connected in series and then are integrally connected in parallel to two ends of a power supply.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, one end of the proximity switch is connected to a high potential end of the power supply, the other end of the proximity switch is connected to a first end of the relay, and a second end of the relay is connected to a low potential end of the power supply.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the power supply is a 24V power supply.
With reference to the first possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, a PLC controller is further disposed in the PLC cabinet, a normally open contact of the relay is electrically connected to a signal input end of the PLC controller, and a signal output end of the PLC controller is electrically connected to a main control computer.
With reference to the first aspect, in a fifth possible implementation manner of the first aspect, a proximity switch fixing piece is fixedly arranged on the first side surface of the scraper casing, and the proximity switch is movably connected with the proximity switch fixing piece.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, a length of a gap between the proximity switch and the sensing piece is 2 to 3 cm.
With reference to the fourth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the connection manner between the PLC controller and the master computer includes wired network connection and wireless network connection.
Drawings
Fig. 1 is a schematic view of a scraper conveyor operation alarm device provided by an embodiment of the present invention;
fig. 2 is a schematic view of a connection relationship between a proximity switch and a relay provided by the embodiment of the present invention.
In FIGS. 1-2:
the device comprises a scraper machine 1, a proximity switch 2, an induction sheet 3, a scraper machine shell 4, a proximity switch fixing sheet 5, an end cover 6, a PLC cabinet 7, a master control computer 8 and a relay 9.
Detailed Description
The present invention will be described with reference to the accompanying drawings and embodiments.
Fig. 1 is the embodiment of the utility model provides a scrape trigger operation alarm device's schematic diagram, including scraping trigger 1, proximity switch 2, response piece 3, scrape the one end that trigger 1 and motor are connected for scraping the trigger aircraft nose, the side welding of shell 4 in the aircraft nose position has proximity switch stationary blade 5, installs proximity switch 2 through the bolt on the proximity switch stationary blade 5. The side of the scraper end cover 6 is welded with the induction sheet 3, the side of the scraper end cover where the induction sheet 3 is located is opposite to the side of the scraper shell where the proximity switch 2 is located, and the end cover 3 rotates along with the chain belt of the scraper 1, so that the induction sheet 3 also rotates along with the chain belt of the scraper 1. Under normal conditions, every time the chain belt of scraper blade machine 1 rotates the round, response piece 3 is close to proximity switch 2 once, because the slew velocity of chain belt keeps unchangeable, consequently response piece 3 is close to proximity switch 2 once every through certain time interval, and response piece 3 is close to proximity switch 2 every time, and proximity switch 2 all can be closed once.
When being close to for guaranteeing to respond to piece 3, proximity switch 2 can accurately sense, and the space between this embodiment proximity switch 2 and the response piece 3 sets up to 2.5cm, can adjust proximity switch 2 and the space distance between the response piece 3 according to actual conditions, no longer gives unnecessary details here.
Further, for transmitting the closing signal generated by the proximity switch 2 to the PLC controller in the PLC cabinet, in this embodiment, the proximity switch 2 and the relay 9 are connected in series, the whole body formed by the series connection is connected in parallel to two ends of the 24V power supply, as shown in fig. 2, after the connection is completed, one end of the proximity switch 2 is connected to the high potential end of the 24V power supply, the other end of the proximity switch 2 is connected to the first end of the relay 9, and the second end of the relay 9 is connected to the low potential end of the 24V power supply. And a normally open auxiliary contact of the relay 9 is connected with a signal input end of the PLC. When the induction sheet 3 is close to the proximity switch 2, the proximity switch 2 is closed, the relay 9 is powered on and the auxiliary contact is closed, and the PLC receives a signal. In a normal case, since the sensing piece 3 is close to the proximity switch 2 at certain time intervals, the PLC controller also receives signals at the same time intervals.
Further, when the scraper fails, in order to warn an operator in the main control room, the output end of the PLC controller in the PLC cabinet 7 of the present embodiment is connected to the main control computer 8 through a wireless network.
In this embodiment, when scraping trigger 1 and taking place the chain breakage or push down, response piece 3 can't be close to proximity switch 2, and the PLC controller does not receive the signal in the specified time, and the PLC controller judges scrapes trigger trouble, shows "scrape trigger operation trouble" on main control computer 8's screen, and the operator receives and shuts down the maintenance after the suggestion. If the time interval between the two adjacent signals received by the PLC is too long or too short than the specified time, the interval time is abnormal and the operator needs to stop the machine for inspection after receiving the prompt.
Known by the above-mentioned embodiment, this embodiment provides a scrape trigger operation alarm device, including scraping trigger 1, proximity switch 2, response piece 3 and PLC cabinet 7, proximity switch 7 passes through proximity switch stationary blade 5 to be installed in the side of scraping trigger 1 aircraft nose position shell, the side at the end cover of scraping trigger 1 is welded to response piece 3, the scrape trigger shell side at proximity switch 2 place is relative with the scraper end cover side at response piece 3 place, there is certain space between proximity switch 2 and the response piece 3, proximity switch 2 is connected with the PLC controller electricity in the PLC cabinet 7 through relay 9. When scraping trigger 1 and breaking down, response piece 3 can't normally be close to proximity switch 2, and proximity switch 2 can't produce closed signal and transmit to the PLC controller, and the PLC controller judges to scrape trigger trouble and sends out the police dispatch newspaper. The proximity switch 2 is arranged outside the shell of the scraper conveyor 1 and is not interfered by transported articles, the contact switch 2 cannot be collided, and a detection signal is accurate and cannot be damaged due to collision.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and if it is replaced, the present invention is only combined with and described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a scrape trigger operation alarm device, includes and scrapes trigger, proximity switch, response piece and PLC cabinet, its characterized in that: the proximity switch is installed the first side of scraping trigger aircraft nose position shell, response piece fixed mounting scrape the second side of trigger end cover, first side with the second side is relative, proximity switch with there is certain space between the response piece, proximity switch with the PLC cabinet electricity is connected.
2. The scraper conveyor running warning device according to claim 1, characterized in that: the PLC cabinet is internally provided with a relay, and the proximity switch and the relay are connected in series and then are integrally connected in parallel at two ends of a power supply.
3. The scraper conveyor running warning device according to claim 2, characterized in that: one end of the proximity switch is connected with a high potential end of the power supply, the other end of the proximity switch is connected with a first end of the relay, and a second end of the relay is connected with a low potential end of the power supply.
4. The scraper conveyor running warning device according to claim 3, characterized in that: the power supply is a 24V power supply.
5. The scraper conveyor running warning device according to claim 2, characterized in that: the PLC cabinet is internally provided with a PLC controller, a normally open contact of the relay is electrically connected with a signal input end of the PLC controller, and a signal output end of the PLC controller is electrically connected with a master control computer.
6. The scraper conveyor running warning device according to claim 1, characterized in that: and a proximity switch fixing sheet is fixedly arranged on the first side surface of the scraper shell, and the proximity switch is movably connected with the proximity switch fixing sheet.
7. The scraper conveyor running warning device according to claim 1, characterized in that: the length of a gap between the proximity switch and the induction sheet is 2-3 cm.
8. The scraper conveyor running warning device according to claim 5, characterized in that: the connection mode of the PLC controller and the master control computer comprises wired network connection and wireless network connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233457.8U CN211225239U (en) | 2019-12-13 | 2019-12-13 | Scraper operation alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233457.8U CN211225239U (en) | 2019-12-13 | 2019-12-13 | Scraper operation alarm device |
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| Publication Number | Publication Date |
|---|---|
| CN211225239U true CN211225239U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922233457.8U Active CN211225239U (en) | 2019-12-13 | 2019-12-13 | Scraper operation alarm device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671506A (en) * | 2021-09-08 | 2021-11-19 | 国家能源集团宁夏煤业有限责任公司 | Scraper conveyor protection device based on ultrasonic ranging principle |
-
2019
- 2019-12-13 CN CN201922233457.8U patent/CN211225239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671506A (en) * | 2021-09-08 | 2021-11-19 | 国家能源集团宁夏煤业有限责任公司 | Scraper conveyor protection device based on ultrasonic ranging principle |
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