CN109422080A - A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device - Google Patents
A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device Download PDFInfo
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- CN109422080A CN109422080A CN201710739023.8A CN201710739023A CN109422080A CN 109422080 A CN109422080 A CN 109422080A CN 201710739023 A CN201710739023 A CN 201710739023A CN 109422080 A CN109422080 A CN 109422080A
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- Prior art keywords
- belt
- relay
- time
- detection switch
- switch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/04—Control devices, e.g. for safety, warning or fault-correcting detecting slip between driving element and load-carrier, e.g. for interrupting the drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
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- Control Of Conveyors (AREA)
Abstract
The present invention relates to the detections that belt of belt conveyor skids.A kind of belt of belt conveyor skidding detection method, steps are as follows: 1) detection switch and block being fixedly installed on belt conveyor roller and bracket；2) using driving drum each rotation as a cycle, a time period t is set；3) output signal of two groups of detection switch of real-time monitoring is judged as belt slippage if can't detect the output signal of detection switch transmission in the time period t.A kind of monitoring device of belt creep, including detection switch, intermediate relay, the time relay, alarm, the detection switch is powered by Switching Power Supply, an intermediate relay is connected in every group of detection switch circuit, a time relay is connected in each intermediate relay control loop, and the control switch of the time relay is in parallel, a time-delay relay control loop is accessed, the control output signal connection alarm or belt conveyor of the time-delay relay power off control loop.
Description
Technical field
The detection method and detection control apparatus skidded the present invention relates to a kind of belt of belt conveyor.Utilize close switch
To detect the operating status of conveyor transmission drum.
Background technique
Belt conveyor is widely used in agricultural, chemical industry, electric power, the material transmission in the fields such as coal and mine.In order to
Prevent conveyer failure from causing safety accident, technical staff devises sideslip protection and pull switch device.But conveyer is being transported
During row, due to the state and moisture content difference of material, it sometimes will appear the case where belt kills, belt caused to beat
It is sliding, it does not work.Such case will lead to head motor and drive head drum idle running, consume electric energy for no reason.It is important that if
Belt lag switch causes material accumulation, in different situations, it may occur that different serious consequences.
Prior art personnel propose the detection for belt slippage and warning device at present, detect judgment method respectively not
Identical, product structure is also had nothing in common with each other, but structure is complicated for majority, at high cost.In order to preferably carry out production safety protected working,
It avoids conveyer failure from making troubles to enterprise's production, avoids heavy economic losses, related technical personnel are to this respect
Research is always in constantly exploring.
Summary of the invention
The present invention is in view of the shortcomings of the prior art, propose a kind of simple, at low cost, the practical belt slippage inspection of structure
Survey method and belt skidding detecting device, it is simply, reliably, easy to accomplish.
The technical solution adopted in the present invention:
1. a kind of belt of belt conveyor skidding detection method realizes the detecting step of belt of belt conveyor skidding such as
Under:
1) at least two groups detection switch is fixedly installed on Belt Conveying machine support, between the multiple groups detection switch
By the way of being connected in parallel, each shunt circuit connects an intermediate relay, controls in each intermediate relay
A time relay is connected in circuit, completes the output switching signal that two groups of detection switch are detected in the time period t, institute
Time relay output contact access warning circuit is stated, and is arranged on driving drum one end inner edge of the belt conveyor
One block being used cooperatively with the detection switch, the detection switch and the block are corresponding, are mounted on outside driving drum
On side frame；
2) using driving drum each rotation as a cycle, setting one is greater than the time period t of cycle time T, utilizes meter
Several or two groups of detection switch of time set real-time detection output switching signal；
If 3) can't detect the output switching signal of detection switch transmission in the time period t, it is judged as belt
It skids, alarm or control signal is exported by time-delay relay.
The detection switch uses proximity Hall switch, travel switch, infrared induction switch or capacitance-sensitive switch, passes through
Whether there is or not the operating statuses of reflection driving drum for the output switching signal of detection detection switch.
Using the conducting delay and power cut off delay characteristic of the time relay, a time period t is set to the time relay, when
When belt runs well, when the time relay also starts to walk, when detection switch and baffle are close, time relay power-off one
It is secondary, when continuing to walk after making it reset and reset, resets detected when resetting repeatedly；Once it is existing that belt slippage occurs
As detection switch exports in time period t without switching signal, then the time relay will not reset clearing, timing time to time
Relay coil is attracted, and exports alarm signal by warning circuit.
In the output control circuit of the time relay, power-off control equipped with belt conveyor motor in parallel with warning circuit
Circuit processed, to realize that the power-off under belt conveyor slippery conditions controls.
A kind of belt skidding detecting device for realizing belt of belt conveyor skidding detection method described in claim 1, packet
Detection switch, intermediate relay, the time relay, alarm, and the block being used cooperatively with the detection switch are included, it is described
Detection switch is at least two groups, is powered by Switching Power Supply, and an intermediate relay is connected in every group of detection switch circuit, described
A time relay is connected in each intermediate relay control loop, the control switch of the time relay is in parallel, access one
Time-delay relay control loop, the control switch output signal connection alarm of the time-delay relay or belt conveyor power-off
Control loop, the block are arranged on the inner edge of belt conveyor driving drum one end, and the detection switch passes through installation
Support is fixed in belt conveyor rack, and the detection switch and the detection block are corresponding, is distributed in the driving drum
On the outer circumference contour line of one end inner edge.
Including belt conveyor power-off control circuit, the belt conveyor power-off control circuit include control relay,
Intermediate relay, the control relay driving coil is in parallel with the alarm, and the control relay controls output signal
Connect the intermediate relay in belt conveyor power-off control circuit.
Positive beneficial effect of the invention:
1, inventive belt conveyer belt skidding detection method and device, design science, rationally, structure is simple, be easy
It realizes, investment cost and operating cost is low.It will test switch to use in pairs, baffle is just opened with close when can effectively prevent skidding
The appearance (when close switch is one group) close to this phenomenon is closed, the accuracy of belt slippage detection is improved.
2, inventive belt conveyer belt slip detector is realized with dexterously conceiving by conventional control device
Belt slippage detection, circuit is simple, and failure rate is low, stable and reliable operation, using effect is good.Circuit is simple, and route can be with
In distribution box, standardized management, warning device can arbitrarily select installation site with environment for configuration.
3, inventive belt conveyer belt skidding detection method and device, detection switch using proximity Hall switch (
Capacitive approach switch or photoelectric proximity switch etc. can be used), there is contactless, low-power consumption, long life, response frequency
The features such as high, can under all kinds of adverse circumstances reliably working, failure alarm signal is accurate, and signal interference is small.
4, output signal and PLC can also be used cooperatively by the present invention, or be used cooperatively with computer, and selection can be with
It is changeable according to practical application.
Detailed description of the invention
Fig. 1 is inventive belt conveyer belt slip detector schematic diagram.
Fig. 2 is the control drawing of inventive belt conveyer belt slip detector detection switch.
Fig. 3 is control principle drawing of the inventive belt conveyer belt slip detector to belt motor.
Fig. 4 is inventive belt conveyer belt slip detector scheme of installation.
Specific embodiment
Below by attached drawing and specific embodiment, technical scheme of the present invention will be described in further detail.
Embodiment 1
Belt of belt conveyor skidding detection method described in the present embodiment, is connected in parallel using at least two groups detection switch
Mode, each shunt circuit connect an intermediate relay, connect one in each intermediate relay control loop
A time relay completes the output switching signal that two groups of detection switch are detected in the time period t, the time relay
Output contact accesses warning circuit.
The belt of belt conveyor skidding detection method, detection switch is using proximity Hall switch, travel switch, red
Outer inductive switch or capacitance-sensitive switch, by detecting the output switching signal of detection switch, whether there is or not the operations of reflection driving drum
State.
Inventive belt conveyer belt skidding detection method, it is special using the conducting delay of the time relay and power cut off delay
Property, a time period t is set to the time relay, when belt runs well, when the time relay also starts to walk, when detection is opened
When closing close with baffle, time relay power-off is primary, when continuing to walk after making it reset and reset, resets reset repeatedly
Shi Jinhang detection；Once belt slippage phenomenon occurs, detection switch is exported in time period t without switching signal, then time relay
Device will not reset clearing, and timing time to time relay coil is attracted, and export alarm signal by warning circuit.
Inventive belt conveyer belt skidding detection method, in the output control circuit of the time relay, with alarm
Circuit in parallel is equipped with the power-off control loop of belt conveyor motor, to realize the power-off control under belt conveyor slippery conditions
System.
Embodiment 2
Referring to Fig. 1, Fig. 2, Fig. 4.A kind of belt skidding detecting device, including detection switch, DC24V intermediate relay, when
Between relay, alarm, the detection switch is at least two groups, is powered by Switching Power Supply, in every group of detection switch circuit
An intermediate relay is connected, connects a time relay, the time relay in each intermediate relay control loop
Control switch it is in parallel, access a time-delay relay control loop, the control switch output signal connection of the time-delay relay
Alarm or belt conveyor power off control loop.It is arranged with the block that the detection switch is used cooperatively in the Belt Conveying
On the inner edge of machine driving drum one end, the detection switch is fixed in belt conveyor rack by erection support, the detection
Switch is corresponding with the detection block, is distributed on the outer circumference contour line of described driving drum one end inner edge.
In figure, L, N:220V AC power source；KF: belt runs intermediate relay；KJ:DC24V intermediate relay；KT: when
Between relay；HA: electric bell；The close switch of SQ:DC24V；UR:AC220V~DC24V Switching Power Supply.Cooperate the effect of relay KF
It is that, when conveyer electrical power, this device is also in energized state simultaneously.
AC220V~DC24V Switching Power Supply is powered, in running order close to switching, by being mounted on driving drum inner edge
On block be used to detect the operating status of conveyor transmission drum.When slipping phenomenon occurs for conveyer, driving drum is in
Dead state must have one group to can't detect block for two groups close to switch at this time, then close at this time to switch in an ON state, in
Between relay coil be powered, the time relay is connected, by delay, electric bell powers alarm.
In Fig. 4, label 1: belt conveyor driving drum；2: with the block being used cooperatively close to switch；3: Belt Conveying
Machine belt；4: close to the connecting wire of switch (each one group of left and right)；5: Belt Conveying machine support；6: the fixed branch close to switch
Seat；7: close to switch (each one group of left and right).
Embodiment 3
Referring to figs. 1 to 4.Belt skidding detecting device described in the present embodiment, including belt conveyor power-off control electricity
Road, the belt conveyor power-off control circuit include control relay, intermediate relay, the control relay driving coil
Centre in parallel with the alarm, in the control relay control output signal connection belt conveyor power-off control circuit
Relay.Using the power cut off delay characteristic of the time relay, belt conveyer motor is powered off, control action is reached.
KM is motor control loop intermediate relay in Fig. 3.
Baffle is fixedly mounted on belt transmission roller inner edge in inventive belt slip detector, in driving drum branch
The installation cooperation distance installed on frame close to switch, close to switch and baffle is 10~20mm.Will test time in device after
Electric appliance is fixedly mounted in distribution box, and distribution box can be fixed on the position for facilitating operation and observation, will be connect by cable
Nearly switch is connected with the time relay.
The detection device working principle is as follows: the detection device power supply works as motor quoted from belt conveyor motor power
When energization, the detection device, which is also powered, enters detecting state.When belt operation, the time relay is in time status, when
When belt normal operation, the baffle on driving drum can be rotated with it, every rotation one week, and baffle can respectively connect with two close to switch
Closely once, close to just connection is switched once, time relay KT1, KT2 is powered off and is resetted simultaneously automatic clear at this time, such situation
Under, warning device does not have output signal.When belt slippage, baffle can stay cool with driving drum, close to open
Closing to lose with baffle effectively will not then act close to distance, and time relay KT1, KT2 timing at this time will not reset simultaneously automatic clear
Zero, when timing reaches setting time T, time relay coil KT1, KT2 are attracted, and time relay KT3 is in energized state,
Coil is also attracted after setting delay time, and warning device is powered and output signal carries out jingle bell alarm, warns staff
Belt is in sipping fault state, and cuts off motor power and carry out shutting down processing control.Alarm output signal can also be aobvious into PLC
Show belt slippage and control belt, can also more simplified circuit, with close to switch output directly arrive computer I O template, into
Enter computer system, the skidding alarm and control of control belt are gone with program.
Binder slipping phenomenon often occurs for four cleaned coal belt conveyors of certain coal preparation plant's second floor, and only protects when belt installation
Deviation switch and pull switch have been stayed, has determined to be applied to this four cleaned coal Belt Conveyings using the belt skidding detecting device later
The belt slippage detection and monitoring of machine.By running for a long time, four equal zero failures of belt conveyor, operational excellence is realized
Safety in production.
Fig. 4 is that inventive belt slip detector uses scheme of installation.It is installed on belt conveyor driving drum 1
Detection block 2 is installed close to switch 7 on Belt Conveying machine support 5 by support 6, close to switch output signal by leading
Line 4 is drawn.Block 2 is used cooperatively with close to switch 7, and cooperation distance is 10~20mm.Detection device is connect with warning device, when
When belt conveyor operates normally, the block 2 on driving drum 1 is rotated with it, every rotation one week, and block and close switch are close
Once, block 2 influences close to switch 7 and is allowed to conducting once, and the time relay can reset and automatic clear is primary, at this time the time
Relay does not have output signal, and warning device is failure to actuate.When belt 3 skids, driving drum 1 not can rotate, in stagnation shape
State, and block 2 will not continue to rotate, then do not turn at this time close to switch, make intermediate relay KJ1 or KJ2 electromagnetic coil
It is electric, intermediate relay KJ1, KJ2 normally-closed contact disconnects, and the time relay KT1, KT2 be in time status, when delay to setting
After time T, normally-closed contact closure is attracted time relay KT3, is connected and is delayed using time relay KT3, and electric bell HA is logical
Electricity, into alarm condition.Time relay KT4 is connect with the intermediate relay KM in motor control loop, works as the time relay
After KT3 is attracted, time relay KT4 is powered, and using the power cut off delay characteristic of time relay KT4, keeps intermediate relay KM disconnected
Electricity achievees the purpose that control motor.
Claims (6)
1. a kind of belt of belt conveyor skidding detection method, the detecting step for realizing that belt of belt conveyor skids is as follows:
1) at least two groups detection switch is fixedly installed on Belt Conveying machine support, is all made of between the multiple groups detection switch
The mode being connected in parallel, each shunt circuit connects an intermediate relay, in each intermediate relay control loop
One time relay of middle connection completes the output switching signal that two groups of detection switch are detected in the time period t, when described
Between relay output contact access warning circuit, and on driving drum one end inner edge of the belt conveyor be arranged one
The block being used cooperatively with the detection switch, the detection switch and the block are corresponding, are mounted on machine on the outside of driving drum
On frame；
2) using driving drum each rotation as a cycle, setting one be greater than cycle time T time period t, using count or
The output switching signal of two groups of detection switch of time set real-time detection；
If 3) can't detect the output switching signal of detection switch transmission in the time period t, it is judged as belt slippage,
Alarm or control signal are exported by time-delay relay.
2. belt of belt conveyor skidding detection method according to claim 1, it is characterized in that: the detection switch uses
Proximity Hall switch, travel switch, infrared induction switch or capacitance-sensitive switch, the output by detecting detection switch switch letter
Number whether there is or not reflection driving drum operating status.
3. belt of belt conveyor skidding detection method according to claim 2, it is characterized in that: utilizing the time relay
Conducting delay and power cut off delay characteristic, set a time period t to the time relay, when belt runs well, time relay
When device also starts to walk, when detection switch and baffle are close, time relay power-off is primary, continues to walk after making it reset and reset
When, it resets detected when resetting repeatedly；Once belt slippage phenomenon occurs, detection switch nothing in time period t is opened
OFF signal output, then the time relay will not reset clearing, and timing time to time relay coil is attracted, and pass through warning circuit
Export alarm signal.
4. belt of belt conveyor skidding detection method according to claim 3, it is characterized in that: in the defeated of the time relay
Out in control loop, power-off control loop equipped with belt conveyor motor in parallel with warning circuit, to realize belt conveyor
Power-off control under slippery conditions.
5. a kind of belt skidding detecting device for realizing belt of belt conveyor skidding detection method described in claim 1, including
Detection switch, intermediate relay, the time relay, alarm, and the block being used cooperatively with the detection switch, feature
Be: the detection switch is at least two groups, is powered by Switching Power Supply, in every group of detection switch circuit connect one among after
Electric appliance connects a time relay in each intermediate relay control loop, and the control switch of the time relay is simultaneously
Connection accesses a time-delay relay control loop, the control switch output signal connection alarm or belt of the time-delay relay
Conveyer broken electric control loop, the block are arranged on the inner edge of belt conveyor driving drum one end, and the detection is opened
Pass is fixed in belt conveyor rack by erection support, and the detection switch and the detection block are corresponding, is distributed in institute
It states on the outer circumference contour line of driving drum one end inner edge.
6. belt skidding detecting device according to claim 5, it is characterised in that: power off control electricity including belt conveyor
Road, the belt conveyor power-off control circuit include control relay, intermediate relay, the control relay driving coil
Centre in parallel with the alarm, in the control relay control output signal connection belt conveyor power-off control circuit
Relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739023.8A CN109422080A (en) | 2017-08-25 | 2017-08-25 | A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739023.8A CN109422080A (en) | 2017-08-25 | 2017-08-25 | A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN109422080A true CN109422080A (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710739023.8A Pending CN109422080A (en) | 2017-08-25 | 2017-08-25 | A kind of belt of belt conveyor skidding detection method and its belt skidding detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113120556A (en) * | 2021-05-08 | 2021-07-16 | 宝钢湛江钢铁有限公司 | Method for detecting state of belt slipping line |
| CN113859911A (en) * | 2021-09-29 | 2021-12-31 | 武汉钢铁集团物流有限公司 | Non-contact belt anti-slip monitoring device |
| CN113998417A (en) * | 2021-11-08 | 2022-02-01 | 兖州煤业股份有限公司 | Belt stall protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080023440A (en) * | 2006-09-11 | 2008-03-14 | 주식회사 삼흥정밀화학 | Device for preventing the slip of belt conveyor pulley |
| CN202784730U (en) * | 2012-06-18 | 2013-03-13 | 内蒙古包钢钢联股份有限公司 | Detecting and alarming device of slipping of belt |
| CN104030004A (en) * | 2014-06-17 | 2014-09-10 | 河南永锦选煤有限公司 | Belt slipping detecting method and device for belt conveyor |
| CN105572605A (en) * | 2015-12-16 | 2016-05-11 | 浙江凯耀照明股份有限公司 | Infrared induction light fixture detection apparatus and detection method |
| CN205294102U (en) * | 2016-01-06 | 2016-06-08 | 唐山钢铁集团有限责任公司 | Band conveyer skids and detects and alarm device |
-
2017
- 2017-08-25 CN CN201710739023.8A patent/CN109422080A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080023440A (en) * | 2006-09-11 | 2008-03-14 | 주식회사 삼흥정밀화학 | Device for preventing the slip of belt conveyor pulley |
| CN202784730U (en) * | 2012-06-18 | 2013-03-13 | 内蒙古包钢钢联股份有限公司 | Detecting and alarming device of slipping of belt |
| CN104030004A (en) * | 2014-06-17 | 2014-09-10 | 河南永锦选煤有限公司 | Belt slipping detecting method and device for belt conveyor |
| CN105572605A (en) * | 2015-12-16 | 2016-05-11 | 浙江凯耀照明股份有限公司 | Infrared induction light fixture detection apparatus and detection method |
| CN205294102U (en) * | 2016-01-06 | 2016-06-08 | 唐山钢铁集团有限责任公司 | Band conveyer skids and detects and alarm device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113120556A (en) * | 2021-05-08 | 2021-07-16 | 宝钢湛江钢铁有限公司 | Method for detecting state of belt slipping line |
| CN113859911A (en) * | 2021-09-29 | 2021-12-31 | 武汉钢铁集团物流有限公司 | Non-contact belt anti-slip monitoring device |
| CN113859911B (en) * | 2021-09-29 | 2023-09-12 | 武汉钢铁集团物流有限公司 | Non-contact type belt anti-slip monitoring device |
| CN113998417A (en) * | 2021-11-08 | 2022-02-01 | 兖州煤业股份有限公司 | Belt stall protection device |
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Application publication date: 20190305 |