CN211997388U - Deviation-proof switch of belt conveyor - Google Patents
Deviation-proof switch of belt conveyor Download PDFInfo
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- CN211997388U CN211997388U CN201921798932.XU CN201921798932U CN211997388U CN 211997388 U CN211997388 U CN 211997388U CN 201921798932 U CN201921798932 U CN 201921798932U CN 211997388 U CN211997388 U CN 211997388U
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- switch
- deviation
- belt conveyor
- band conveyer
- belt
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Abstract
The utility model discloses a band conveyer prevents inclined to one side switch, conveyer belt (1) advance along with band conveyer (2) rotation on band conveyer (2), prevent inclined to one side switch setting in conveyer belt (1) direction of travel's both sides, its characterized in that prevent inclined to one side switch for photoelectricity travel switch (4). The utility model discloses touching travel switch sends the shut down command when walking partially with traditional band conveyer, and then makes band conveyer bring to rest, replaces to use photoelectricity travel switch's control scheme, improves band conveyer safe operation's security and reliability.
Description
Technical Field
The utility model belongs to electrical control equipment specifically is a band conveyer prevents inclined to one side switch.
Background
The prior art is that a deviation-preventing switch of a belt conveyor is a mechanical travel switch, and an installation diagram of the deviation-preventing mechanical travel switch of the belt conveyor is shown in a figure 1.
The mechanical travel switch has the defects of short mechanical service life and low precision caused by frequent mechanical impact and collision.
SUMMERY OF THE UTILITY MODEL
For the problem that mechanical type travel switch exists among the solution background art, the utility model provides a band conveyer prevents inclined to one side switch.
The technical scheme is as follows:
the utility model provides a band conveyer's deviation prevention switch, the conveyer belt advances along with the rotation of band conveyer transmission reel on band conveyer, and deviation prevention switch sets up in the both sides of conveyer belt advancing direction, deviation prevention switch is the photoelectricity travel switch.
Preferably, the photoelectric travel switch comprises a sending end, a receiving end and a laser correlation photoelectric switch; the transmitting end transmits a light beam to the receiving end; when the conveying belt deviates, the conveying belt is displaced between the receiving end and the sending end, the receiving end cannot receive light beams, the laser correlation photoelectric switch is switched off, and the shutdown switch linked with the laser correlation photoelectric switch is switched on to trigger a shutdown signal.
Preferably, the shutdown switch is connected in series to a time relay, and operates in the shutdown loop after time delay.
Preferably, the photoelectric travel switch is supported by a mounting bracket, and the mounting bracket adjusts the position and the height so that the light beam is aligned to the anti-deviation position close to the conveying belt.
Preferably, the sending end and the receiving end are respectively arranged in two metal boxes, and the metal boxes are provided with an air inlet and an air outlet; instrument wind blows in from the air intake and then blows out from the air outlet, prevents near the beam emission probe of photoelectricity travel switch dust and piles up, blocks the transmission of light signal.
Preferably, a valve is arranged on the air inlet of the instrument wind.
The beneficial effects of the utility model
The utility model discloses touching travel switch sends the shut down command when walking partially with traditional band conveyer, and then makes band conveyer bring to rest, replaces to use photoelectricity travel switch's control scheme, improves band conveyer safe operation's security and reliability.
When the belt conveyor has a deviation fault, the laser correlation photoelectric switch can sense signal interruption in time.
Meanwhile, in order to prevent false operation caused by material splashing and the like, a time relay is connected in series into a parking contact of the laser correlation photoelectric switch, and the laser correlation photoelectric switch acts and stops a loop after time delay. The control circuit formed by the light correlation photoelectric switch and the time relay can accurately reflect the deviation condition of the belt conveyor, and can send out signals and cut off the power supply of the belt conveyor in time when the deviation fault is ensured, so that the belt conveyor is safely stopped.
The photoelectric travel switch is designed with an air inlet and an air outlet structure of the metal box. The air inlet is filled with instrument air, the air inflow is further adjusted through the valve, a positive pressure ventilation system is formed at a certain positive pressure of the travel in the anti-deviation laser correlation photoelectric switch box, the instrument air is blown out from the air outlet after being filled, dust nearby a beam emission probe of the laser correlation photoelectric switch is prevented from being accumulated, and transmission of optical signals is blocked.
The utility model discloses a prevent inclined to one side switch characteristics do not need with other article direct contact in the work, lean on hiding, leading to of the light path of certain distance, transmit the switching value signal, put through or break off band conveyer power, the utility model discloses a prevent inclined to one side switch long service life does not receive factors such as dust, steam and influence.
Drawings
FIG. 1 is a mounting view of a deviation preventing mechanical stroke switch of a conventional belt conveyor in the background art
FIG. 2 is the installation diagram of the photoelectric travel switch of the belt conveyor of the present invention
FIG. 3 is the structure diagram of the photoelectric travel switch of the present invention
FIG. 4 is a schematic view of the working state of the photoelectric travel switch when the belt conveyor deviates
FIG. 5 is a circuit diagram of the present invention
Detailed Description
The present invention will be further explained with reference to the following examples, but the scope of the present invention is not limited thereto:
referring to fig. 2, the anti-deviation switch of the belt conveyor is characterized in that a conveying belt 1 advances on the belt conveyor 2 along with the rotation of a transmission drum of the belt conveyor 2, the anti-deviation switch is arranged on two sides of the advancing direction of the conveying belt 1, and the anti-deviation switch is a photoelectric travel switch 4.
The photoelectric travel switch 4 is supported by a mounting bracket 4-9, and the position and the height of the mounting bracket 4-9 are adjusted, so that the light beam 4-3 is aligned to the anti-deviation position close to the conveyer belt 1.
With reference to fig. 3, the photoelectric travel switch 4 includes a transmitting terminal 4-1, a receiving terminal 4-2, and a laser correlation photoelectric switch 4-4; the transmitting end 4-1 transmits a light beam 4-3 to the receiving end 4-2; when the conveyer belt 1 deviates, the conveyer belt 1 moves to a position between the receiving end 4-1 and the sending end 4-2, the receiving end 4-2 cannot receive the light beam 4-3, the laser correlation photoelectric switch 4-4 is switched off, and the shutdown switch 4-5 linked with the laser correlation photoelectric switch 4-4 is switched on to trigger a shutdown signal.
In the preferred embodiment, in order to avoid the short-time shielding of light transmitted by the transmitting end caused by material splashing and the like, the stop switches 4-5 are connected in series with the time relay, and the stop signal sent by the laser correlation photoelectric switch cuts off the power supply of the main loop through short-time delay. The contact points of the laser correlation photoelectric switch and the time relay ensure that the system is safely and reliably stopped when the belt conveyor has a deviation fault.
In a preferred embodiment, in order to prevent dust materials from accumulating and blocking light signals of the photoelectric switch when the belt conveyor conveys the dust materials, the transmitting end 4-1 and the receiving end 4-2 are respectively arranged in two metal boxes 4-6.
Meanwhile, an air inlet 4-7 and an air outlet 4-8 are arranged on the metal box 4-6 to form a positive pressure ventilation system; instrument wind is blown in from the air inlet 4-7 and then is blown out from the air outlet 4-8, so that dust cannot enter the photoelectric switch mounting box when flowing, and dust can be effectively prevented from blocking a photoelectric switch probe
Preferably, a valve 4-10 is arranged on the instrument wind inlet 4-7. The air inflow is adjusted by a valve.
Fig. 5 shows a circuit connection diagram of the present invention, which includes:
-motor main circuit of belt conveyor: the system comprises a breaker QF, a normally open contact of an alternating current contactor KM, MPD, PE and a motor M which are connected in sequence;
-start-stop circuit: the device comprises a normally closed contact of a time relay KT, a normally open contact of a KM, a self-reset normally open button SBn (start button), a self-reset normally closed button SBf (stop button) and an electromagnetic coil of the KM, which are connected in sequence;
-belt bias loop: the electromagnetic switch comprises a normally open contact of an electromagnetic relay KS1 and an electromagnetic coil of KT which are connected in sequence;
-a switching power supply circuit: the electromagnetic coil comprising KS1, the on-off of the switch power supply loop is controlled by a shutdown switch 4-5, the shutdown switch 4-5 is linked with a laser correlation photoelectric switch 4-4: when the laser correlation photoelectric switch 4-4 is disconnected, the shutdown switch 4-5 is closed, and the switch power supply loop is conducted.
The working principle is as follows:
when the motor M works normally: the laser correlation photoelectric switch 4-4 is closed, the shutdown switch 4-5 is opened, the electromagnetic coil of the KS1 is not electrified, and the normally open contact of the KS1 is opened; the electromagnetic coil of the KT is not electrified, and the normally closed contact of the KT is closed;
the method comprises the following steps that a self-reset normally-open button SBn is pressed, an electromagnetic coil of a KM is electrified, a normally-open contact of the KM is closed, and the self-reset normally-open button SBn is reset;
when the self-resetting normally closed button SBf is pressed, the electromagnetic coil of the KM is powered off, the normally open contact of the KM is disconnected, the self-resetting normally closed button SBf is reset, the electromagnetic coil of the KM cannot obtain current in a start-stop loop, the normally open contact of the KM is disconnected, an electrode main loop of the belt conveyor is continuously disconnected, and the motor M stops working due to manual closing.
When the belt is deviated: the laser correlation photoelectric switch 4-4 is disconnected, the shutdown switch 4-5 is closed in a linkage manner, at the moment, a power supply loop of the photoelectric switch is switched on, and the electromagnetic coil of KS1 is electrified; a normally open contact of KS1 is closed, a belt bias loop is conducted, and an electromagnetic coil of KT is electrified; the normally closed contact of KT is disconnected after short time delay, the start-stop loop is broken, the electromagnetic coil of KM is de-energized, the normally open contact of KM is opened, the electrode main loop of the belt conveyor is continuously broken, and the motor M stops working due to deviation of the belt.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a band conveyer's deviation prevention switch, conveyer belt (1) advances along with band conveyer (2) transmission reel's rotation on band conveyer (2), and deviation prevention switch sets up in the both sides of conveyer belt (1) advancing direction, its characterized in that deviation prevention switch is photoelectricity travel switch (4).
2. The deviation preventing switch of the belt conveyor according to claim 1, wherein the photoelectric travel switch (4) comprises a sending end (4-1), a receiving end (4-2) and a laser correlation photoelectric switch (4-4); the transmitting end (4-1) transmits the light beam (4-3) to the receiving end (4-2); when the conveying belt (1) deviates, the conveying belt (1) moves to a position between the sending end (4-1) and the receiving end (4-2), the receiving end (4-2) cannot receive the light beam (4-3), the laser correlation photoelectric switch (4-4) is disconnected, the shutdown switch (4-5) linked with the laser correlation photoelectric switch (4-4) is closed, and a shutdown signal is triggered.
3. A deviation preventing switch for a belt conveyor according to claim 2, characterized in that the stop switch (4-5) is incorporated in series with a time relay.
4. A deviation switch for a belt conveyor according to claim 2, characterized in that said photoelectric travel switch (4) is supported by a mounting bracket (4-9).
5. The deviation preventing switch of the belt conveyor according to claim 2, wherein the transmitting end (4-1) and the receiving end (4-2) are respectively arranged in two metal boxes (4-6), and the metal boxes (4-6) are provided with the air inlet (4-7) and the air outlet (4-8).
6. A switch of belt conveyor according to claim 5, characterized in that the air inlet (4-7) is provided with a valve (4-10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921798932.XU CN211997388U (en) | 2019-10-24 | 2019-10-24 | Deviation-proof switch of belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921798932.XU CN211997388U (en) | 2019-10-24 | 2019-10-24 | Deviation-proof switch of belt conveyor |
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| Publication Number | Publication Date |
|---|---|
| CN211997388U true CN211997388U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921798932.XU Active CN211997388U (en) | 2019-10-24 | 2019-10-24 | Deviation-proof switch of belt conveyor |
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| CN (1) | CN211997388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816072A (en) * | 2021-08-30 | 2021-12-21 | 中石化宁波工程有限公司 | Unloading device of air cushion conveyor |
| CN114162553A (en) * | 2021-12-03 | 2022-03-11 | 临沂会宝岭铁矿有限公司 | Anti-tearing protection device for conveying belt |
-
2019
- 2019-10-24 CN CN201921798932.XU patent/CN211997388U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816072A (en) * | 2021-08-30 | 2021-12-21 | 中石化宁波工程有限公司 | Unloading device of air cushion conveyor |
| CN114162553A (en) * | 2021-12-03 | 2022-03-11 | 临沂会宝岭铁矿有限公司 | Anti-tearing protection device for conveying belt |
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