CN205294102U - Band conveyer skids and detects and alarm device - Google Patents
Band conveyer skids and detects and alarm device Download PDFInfo
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- CN205294102U CN205294102U CN201620003699.1U CN201620003699U CN205294102U CN 205294102 U CN205294102 U CN 205294102U CN 201620003699 U CN201620003699 U CN 201620003699U CN 205294102 U CN205294102 U CN 205294102U
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- alarm device
- proximity switch
- skids
- belt conveyor
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Abstract
The utility model provides a band conveyer skids and detects and alarm device, include PLC during constitutes, hit iron, detecting element and alarm device, it installs on band conveyer's driven cylinder to hit iron, detecting element includes proximity switch and relay, proximity switch fix in band conveyer's frame and with hit the iron phase and correspond, connect on the power behind the control coil of relay and the proximity switch series connection, the normally open contact one end ground connection of relay, the other end and PLC's input ports are connected is equipped with pull -up resistance, alarm device connects in PLC's output. The utility model discloses the operating information of belt is gathered with rack -mounted proximity switch to the iron that hits that the utilization was installed on the driven cylinder of band conveyer, and then judges whether the belt skids, simple structure not only, and low cost detects the precision height, and the whole device part that does not rub has moreover improved detection device's operational reliability greatly.
Description
Technical field
This utility model relates to whether a kind of belt detecting belt conveyor skids, and sends the device of alarm signal when skidding, and belongs to conveying technology field.
Background technology
Belt conveyor is the solid material conveying equipment that modern industrial and mining establishment are conventional, belt creep is one of modal fault of belt conveyor, therefore belt creep phenomenon carries out effectively detection is get rid of sipping fault in time, it is ensured that the premise of the safe efficient operation of belt conveyor.
At present; belt conveyor general is arranged on the mechanical type speed skidding switch of belt conveyer head to detect whether belt skids; during speed skidding switch; the belt frictionally of conveyer drives the wheel trolley of the switch that skids to rotate; wheel trolley is made to reflect the actual belt speed of belt; wheel trolley drives the power transmission shaft skidded in switch to rotate; making the centrifugal switch in skidding switch be switched on or switched off the electric impulse signal of switch output of skidding under certain speed, protection device realizes the slipping protection of belt conveyor by detecting the output situation of pulse signal. Actually used process finds, due to wheel trolley and power transmission shaft high speed rotating, work process occurs abrasion unavoidably, therefore the mechanical part of mechanical type speed skidding switch very easily damages, and the pressure between wheel trolley and travelling belt can directly affect the centrifugal switch skidded in switch, easily caused by controlling system malfunction, reduce the operational reliability of detecting device and the accuracy of testing result.
Although adopting electronic type belt feeder skidding detection alarm device can overcome disadvantages mentioned above, but existing electronic type belt feeder skids, detection alarm device not only manufacturing cost is higher, and installation environment has significantly high requirement, is easily disturbed in conventional environment.
Utility model content
The purpose of this utility model is in that the drawback for prior art, it is provided that the belt conveyor that a kind of low cost of manufacture, operational reliability are high skids and detects and alarm device.
Problem described in the utility model realizes with following technical proposals:
A kind of belt conveyor skids and detects and alarm device, composition includes PLC, hits ferrum, detects unit and alarm device, the described ferrum that hits is arranged on the follower rollers of belt conveyor, described detection unit includes proximity switch and relay, and described proximity switch is fixed in the frame of belt conveyor and corresponding with hitting ferrum;The control coil of described relay and proximity switch are connected in series and are followed by power supply, normally opened contact one end ground connection of relay, and the other end is connected with the input port of PLC and is provided with pull-up resistor; Described alarm device is connected to the outfan of PLC.
Above-mentioned belt conveyor skids and detects and alarm device, and described detection unit arranges two, and the proximity switch of each detection unit is connected with frame by adjusting nut.
Above-mentioned belt conveyor skids detection and alarm device, described in hit ferrum and arrange two, they are symmetrically mounted on the follower rollers axis both sides of belt conveyor, and two to hit the outside of ferrum concordant with the face of cylinder of follower rollers.
Above-mentioned belt conveyor skids and detects and alarm device, and described alarm device adopts audible-visual annunciator.
This utility model utilizes hit ferrum and the rack-mounted proximity switch that are arranged on belt conveyor follower rollers to gather the operation information of belt, and then judge whether belt skids, it is not only simple in structure, with low cost, accuracy of detection is high, and whole device does not have friction means, substantially increase the operational reliability of detecting device.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is electrical schematic diagram of the present utility model;
Fig. 2 is proximity switch and the scheme of installation hitting ferrum.
In figure, labelling is as follows: 1, frame, 2, adjusting nut, 3, hit ferrum, 4, follower rollers, PLC, programmable controller, K1, the first proximity switch, K2, the second proximity switch, J1, the first relay, J2, the second relay, BJ, alarm device, R1, the first pull-up resistor, R2, the second pull-up resistor.
Detailed description of the invention
Referring to Fig. 1 and Fig. 2, this utility model include PLC, two contactless proximity switch (the first proximity switch K1 and the second proximity switch K2), two relays (first relay J 1 and the second relay J 2), two hit ferrum 3 and alarm device BJ. Two are hit ferrum 3 and are arranged on the follower rollers 4 of belt conveyor, are used for triggering proximity switch, and the support of two proximity switches is welded in the frame 1 of belt conveyor, and the on-off model of proximity switch output sends into PLC. The model of proximity switch is YD-A-A15AC220V, and the model of relay is RXM42P7.
Strip hit ferrum 3 embowment, concordant with the face of cylinder of follower rollers 4 and with proximity switch the sensitive surface in outside (namely away from the side of follower rollers axis) hitting ferrum 3 is corresponding. Adjusting nut 2 is for fixing proximity switch scalable proximity switch and the distance hitting ferrum 3.
Operation principle: the power supply of the first proximity switch K1 and the second proximity switch K2 is quoted from belt conveyor dragging motor major loop; when namely only having belt conveyor dragging motor to operate, two proximity switches just have electricity; when belt conveyor dragging motor is shut down, proximity switch synchronizes power-off, stops detection and reports to the police. When belt conveyor is properly functioning, the switching signal of proximity switch output sends into PLC, reset acoustic-optic alarm. During belt creep, the rotating speed of the follower rollers 4 of belt conveyor is lower than the rotating speed of drive roll (rotating speed of drive roll is known), the frequency of the on-off model that PLC exports according to proximity switch is it may determine that whether belt skids, if skidded, then export control signal, make alarm device BJ send sound and light alarm signal.
The purpose arranging two proximity switches is to improve the reliability of this device, as long as there being the signal of a proximity switch output to be within normal frequency scope, alarm device does not just work, and thus can effectively prevent false alarm.
Claims (4)
1. a belt conveyor skids and detects and alarm device, it is characterized in that, it includes PLC, hits ferrum (3), detects unit and alarm device (BJ), the described ferrum (3) that hits is arranged on the follower rollers (4) of belt conveyor, described detection unit includes proximity switch and relay, and the frame (1) that described proximity switch is fixed on belt conveyor is upper and corresponding with hitting ferrum (3); The control coil of described relay and proximity switch are connected in series and are followed by power supply, normally opened contact one end ground connection of relay, and the other end is connected with the input port of PLC and is provided with pull-up resistor; Described alarm device (BJ) is connected to the outfan of PLC.
2. a kind of belt conveyor according to claim 1 skids and detects and alarm device, it is characterized in that, described detection unit arranges two, and the proximity switch of each detection unit is connected with frame (1) by adjusting nut (2).
3. a kind of belt conveyor according to claim 1 and 2 skids and detects and alarm device, it is characterized in that, the described ferrum (3) that hits arranges two, they are symmetrically mounted on follower rollers (4) the axis both sides of belt conveyor, and two to hit the outside of ferrum (3) concordant with the face of cylinder of follower rollers (4).
4. a kind of belt conveyor according to claim 3 skids and detects and alarm device, it is characterized in that, described alarm device (BJ) adopts audible-visual annunciator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003699.1U CN205294102U (en) | 2016-01-06 | 2016-01-06 | Band conveyer skids and detects and alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003699.1U CN205294102U (en) | 2016-01-06 | 2016-01-06 | Band conveyer skids and detects and alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205294102U true CN205294102U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620003699.1U Active CN205294102U (en) | 2016-01-06 | 2016-01-06 | Band conveyer skids and detects and alarm device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422080A (en) * | 2017-08-25 | 2019-03-05 | 辛鹏 | A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device |
| CN112124902A (en) * | 2020-09-28 | 2020-12-25 | 邯郸钢铁集团有限责任公司 | Method for detecting slippage of belt of feeding machine |
-
2016
- 2016-01-06 CN CN201620003699.1U patent/CN205294102U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422080A (en) * | 2017-08-25 | 2019-03-05 | 辛鹏 | A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device |
| CN112124902A (en) * | 2020-09-28 | 2020-12-25 | 邯郸钢铁集团有限责任公司 | Method for detecting slippage of belt of feeding machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |