CN206857604U - Belt skidding detecting device and belt conveyer - Google Patents
Belt skidding detecting device and belt conveyer Download PDFInfo
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- CN206857604U CN206857604U CN201720525935.0U CN201720525935U CN206857604U CN 206857604 U CN206857604 U CN 206857604U CN 201720525935 U CN201720525935 U CN 201720525935U CN 206857604 U CN206857604 U CN 206857604U
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Abstract
The utility model provides a kind of belt skidding detecting device.The belt skidding detecting device provided includes First Speed detection means, second speed detection means, compares control device and warning device；Wherein：First Speed detection means is used for the first linear velocity for detecting the driving wheel of belt conveyer；Second speed detection means is used for the second linear velocity for detecting the driven pulley of belt conveyer；Compare control device with First Speed detection means and second speed detection means to be connected, compare control device and be used to compare the first linear velocity and the second linear velocity, and the warning device alarm being attached thereto is controlled in the first linear velocity and unequal the second linear velocity.When belt skidding detecting device provided by the utility model can solve the problem that current belt conveyer work described in background technology, staff can not recognize the problem of belt produces skidding in time.The utility model also provides a kind of belt conveyer.
Description
Technical field
Belt tranmission techniques field, more particularly to a kind of belt skidding detecting device are the utility model is related to, this practicality is new
Type further relates to a kind of belt conveyer with the belt skidding detecting device.
Background technology
It is known that the application of belt-conveying in the industrial production is quite varied, especially in steel processes enterprise.
In the production process of steel, the transport for variety classes material, the structure and performance of belt conveyer have different and tight
The requirement of lattice.But in the actual course of work of belt conveyer, due to the difference of material state, the difference of moisture with
And belt caused by working environment expands with heat and contract with cold and the reason such as aging, makes between belt and driving wheel, between belt and driven pulley
It is easy to produce skidding, and belt slippage phenomenon gently then causes the solid accumulation transported on belt, even causes when serious
Belt abrasion, the accident such as on fire, this safety in production to enterprise are totally unfavorable.
So, there is provided one kind can detect the belt whether belt produces skidding when belt conveyer works
Slip detector is urgent problem to be solved.
Utility model content
The utility model provides a kind of belt skidding detecting device, to solve described in background technology the shadow because of belt slippage
The problem of ringing production process.
In order to solve the above-mentioned technical problem, the utility model discloses following technical scheme：
Belt skidding detecting device, including First Speed detection means, second speed detection means, compare control device and
Warning device；Wherein：The First Speed detection means is used for the first linear velocity for detecting the driving wheel of belt conveyer；It is described
Second speed detection means is used for the second linear velocity for detecting the driven pulley of the belt conveyer；
The relatively control device is connected with the First Speed detection means and the second speed detection means, institute
State and compare control device and be used for first linear velocity and second linear velocity；
Warning device control device compared with described connects, and in first linear velocity and second linear velocity
Unequal alarm.
Preferably, in above-mentioned belt skidding detecting device：
The First Speed detection means includes the first sampling apparatus and First Speed computing device；First sampling cartridge
Put and be connected with the First Speed computing device, first sampling apparatus is used to gather the very first time that the driving wheel rotates
Data；
First Speed computing device control device compared with described connects, and the First Speed computing device is based on
First linear velocity is calculated, and the value of first linear velocity is exported to the relatively control device.
Preferably, in above-mentioned belt skidding detecting device：
First sampling apparatus includes the first sensor block, the first proximity switch and the first pulse spacing harvester；Institute
The first sensor block is stated on the driving wheel；First proximity switch is arranged in the frame of the belt conveyer,
And arrangement corresponding with first sensor block, for sensing first sensor block to produce the first pulse signal；
The first pulse spacing harvester and first proximity switch and the First Speed computing device are homogeneous
Even, the first pulse spacing harvester is used to gathering very first time interval between adjacent two first pulse signal, and described the
One time is at intervals of the very first time data.
Preferably, in above-mentioned belt skidding detecting device：
The second speed detection means includes the second sampling apparatus and second speed computing device；Second sampling cartridge
Put and be connected with the second speed computing device, second sampling apparatus is used to gather the second time that the driven pulley rotates
Data；
Second speed computing device control device compared with described connects, and the second speed computing device is based on
Second linear velocity is calculated, and the value of second linear velocity is exported to the relatively control device.
Preferably, in above-mentioned belt skidding detecting device：
Second sampling apparatus includes the second sensor block, the second proximity switch and the second pulse spacing harvester；Institute
The second sensor block is stated on the driven pulley；Second proximity switch is arranged in the frame of the belt conveyer,
And arrangement corresponding with second sensor block, for sensing second sensor block to produce the second pulse signal；
The second pulse spacing harvester and second proximity switch and the second speed computing device are homogeneous
Even, the second pulse spacing harvester is used to gathering the second time interval between adjacent two second pulse signal, and described the
Two time intervals are second time data.
Preferably, in above-mentioned belt skidding detecting device：
The First Speed computing device and the second speed computing device are the programmable logic controller of industry
(PLC) equipment.
Preferably, in above-mentioned belt skidding detecting device：
The relatively control device is data comparator or industrial PLC equipment.
Preferably, in above-mentioned belt skidding detecting device：
The warning device is audible-visual annunciator.
Preferably, in above-mentioned belt skidding detecting device：
Also include latency device；Latency device control device compared with described connects, and the latency device is used for institute
State and compare control device and control the warning device to alarm after setting time section.
Based on the belt skidding detecting device of above-mentioned offer, the utility model also provides a kind of belt conveyer, including：
As above the belt skidding detecting device described in any one.
This belt skidding detecting device provided by the utility model, it is provided with First Speed detection means and is used to detect skin
The first linear velocity with transporter driving wheel；Accordingly, set second speed detection means driven for calculating belt conveyer
Second linear velocity of wheel.First Speed detection means and second speed the detection means control device compared with connect, and to than
The first linear velocity and the second linear velocity are exported compared with control device, comparing control device can receive and compare the first linear velocity and second
The value of linear velocity；Warning device control device compared with connects, and in the first linear velocity and unequal the second linear velocity, compares
Control device control warning device alarm, staff's very first time is understood belt slippage situation and is solved belt in time and beat
Sliding problem.
Worked as described in the background art in belt it can be seen that belt skidding detecting device provided by the utility model can be realized
When, detect whether it produces the purpose of skidding.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the technical scheme in the utility model embodiment or background technology
Or the required accompanying drawing used is briefly described in background technology description, it should be apparent that, for ordinary skill people
For member, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the operating diagram for the belt skidding detecting device that the utility model embodiment provides；
Fig. 2 is the structural representation letter of the first sampling apparatus and the second sampling apparatus of belt skidding detecting device shown in Fig. 1
Figure.
Description of reference numerals：
100- First Speed detection means, the sampling apparatuses of 110- first, the sensor blocks of 111- first, 112- first are close to be opened
Pass, 120- First Speed computing device, 200- second speeds detection means, the sampling apparatuses of 210- second, the sensor blocks of 211- second,
The proximity switches of 212- second, 220- second speeds computing device, 300- compare control device, 400- warning devices, 500- delays
Equipment.
Embodiment
The utility model embodiment provides a kind of belt skidding detecting device, current as described in the background art to solve
The problem of belt produces skidding can not be recognized in time.
In order that those skilled in the art more fully understand the technical scheme in the utility model, below in conjunction with this reality
With the accompanying drawing in new embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that
Described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.It is new based on this practicality
Embodiment in type, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, it should all belong to the scope of the utility model protection.
Fig. 1 is refer to, Fig. 1 is the operating diagram for the belt skidding detecting device that the utility model embodiment provides.This
The belt skidding detecting device that utility model embodiment provides includes First Speed detection means 100, second speed detection means
200th, control device 300 and warning device 400 are compared.
Wherein, First Speed detection means 100 and second speed detection means 200 can be velometer or other can
Row equipment, First Speed detection means 100 and second speed detection means 200 can be separately mounted to by skin by fastener etc.
At driving wheel and driven pulley with transporter, First Speed detection means 100 can calculate the first linear velocity of driving wheel；Phase
Answer, second speed detection means 200 can calculate the second linear velocity of driven pulley；It can be work to compare control device 300
Industry PLC device or data comparator, it can will compare control device 300 and be examined with First Speed detection means 100 and second speed
Survey device 200 to connect by circuit, First Speed detection means 100 and second speed detection means 200 can be controlled to comparing
Device 300 processed exports the first linear velocity and the second linear velocity, and compares control device 300 and can compare the first linear velocity and the
The value of two linear velocities；Warning device 400 can be also associated with by circuit by comparing control device 300, and warning device 400 can be
Alarm, warning device 400 can be controlled in the first linear velocity and unequal the second linear velocity by comparing control device 300
Alarm.
The course of work of the present apparatus is as follows：In the present apparatus, dress is detected by the First Speed on belt conveyer
100 and second speed detection means 200 are put, belt conveyer driving wheel and driven pulley rotate first can be calculated respectively
Linear velocity and the second linear velocity；First Speed detection means 100 and second speed detection means 200 can control dress compared with
The connection of 300 circuits is put, and the two can export the first linear velocity and the second linear velocity to control device 300 is compared, and compare control
Device 300 can compare the size of the first linear velocity and the second linear speed angle value, and when two linear speed angle value are unequal, control with
The warning device 400 of connection alarm, staff is recognized that belt generates skidding the very first time, and locate in time
Reason.
First Speed detection means 100 can include the first sampling apparatus 110 and First Speed computing device 120, and first
Sampling apparatus 110 can be connected with First Speed computing device 120, and the first sampling apparatus 110 can be used for collection and actively rotate
Dynamic very first time data；First Speed computing device 120 control device 300 can connect compared with, and First Speed calculates dress
120 are put to can be used for calculating the first linear velocity, and can be to the value for comparing the first linear velocity of output of control device 300.
Specifically, the first sampling apparatus 110 can be time harvester, First Speed computing device 120 can be small
Type computing system；The first sampling apparatus 110 can be connected with First Speed computing device 120 by circuit, accordingly, first
Speed counting device 120 can also be connected compared between control device 300 by circuit；First sampling apparatus 110 can be adopted
Collect the time that driving wheel rotates one week, certainly, the first harvester 110 can also gather the time that driving wheel rotates more weeks, and
Average, the time that driving wheel rotates used in one week can be very first time data；Staff can clearly measure
The girth of driving wheel；Accordingly, First Speed computing device 120 can rotate one week institute according to the girth and driving wheel of driving wheel
Time calculates the first linear velocity of driving wheel rotation, and can export the first linear velocity to control device 300 is compared.
Further, the first sampling apparatus 110 can include the first sensor block 111, the first proximity switch 112 and the first arteries and veins
Punching interval harvester；Such as Fig. 2, Fig. 2 is the first sampling apparatus and the second sampling apparatus of belt skidding detecting device shown in Fig. 1
Structure schematic diagram.First sensor block 111 may be mounted on driving wheel；First proximity switch 112 may be mounted at belt
In the frame of transporter, and arrangement corresponding with the first sensor block 111, the first proximity switch 112 can be right with the first sensor block 111
It should coordinate and produce the first pulse signal；First pulse spacing harvester can be with the first proximity switch 112 and First Speed meter
Calculate device 120 to be connected, the first pulse spacing harvester can be gathered between the very first time between adjacent two first pulse signal
Every, the very first time interval can be very first time data.
Specifically, the first sensor block 111 can be metal derby or other induction installations, the first proximity switch 112 can be
Electromagnetic induction device, the first pulse spacing harvester can be Pulse sampling device；First sensor block 111 can be passed through fastening
Part is fixedly connected on driving wheel, accordingly, can be arranged on the first proximity switch 112 in the frame of belt conveyer, and
Make the first proximity switch 112 corresponding with the first sensor block 111；First pulse spacing harvester and the first proximity switch 112 can
To be connected by circuit.When belt conveyer works, driving wheel rotates, when the first sensor block 111 and the first proximity switch
During 112 face, the first proximity switch 112 can constantly produce the first pulse signal, between adjacent two pulse signals when
Between interval be that driving wheel rotates time of one week, be very first time data；Staff can measure the first sensor block 111 and exist
Circumference circle on driving wheel at position.Obvious, First Speed computing device 120 can be according to very first time data
The first linear velocity of driving wheel is calculated with circumference circle on driving wheel.
Likewise, second speed detection means 200 can also include the second sampling apparatus 210 and second speed computing device
220, the second sampling apparatus 210 can be connected with second speed computing device 220, and accordingly, the second sampling apparatus 210 can be with
For gathering the second time data of driven pulley rotation；Likewise, second speed computing device 220 can also control dress compared with
300 connections are put, second speed computing device 220 can be used for calculating the second linear velocity, and can be defeated to control device 300 is compared
Go out the value of the second linear velocity.
Specifically, the second sampling apparatus 210 can be time harvester, second speed computing device 220 can be small
Type data computing system；The second sampling apparatus 210 can be connected with second speed computing device 220 by circuit, accordingly,
Second speed computing device 220 can also be connected compared between control device 300 by circuit；Second sampling apparatus 210 can
The time used in one week is rotated for collection driven pulley, it is of course also possible to which gathering driven pulley rotates the time in more weeks, then takes and turns
The average value of dynamic one week, the time used in driven pulley rotation one week can be the second time data；Staff can be with direct measurement
The girth of driven pulley, accordingly, second speed computing device 220 can be according to used in the girths of driven pulley with its rotation one week
Time calculates the second linear velocity of driven pulley rotation, and can export the second linear velocity to control device 300 is compared.
Further, the second sampling apparatus 210 can also include the second sensor block 211, the second proximity switch 212 and second
Pulse spacing harvester；Such as Fig. 2, Fig. 2 is the first sampling apparatus and the second sampling cartridge of belt skidding detecting device shown in Fig. 1
The structure schematic diagram put.Second sensor block 211 may be mounted on driven pulley；Second proximity switch 212 can also be arranged on
In the frame of belt conveyer, and arrangement corresponding with the second sensor block 211, the second proximity switch 212 can be with the second sensor block
211 corresponding matchings produce the second pulse signal；Second pulse spacing harvester can be with the second proximity switch 212 and the second speed
Spend computing device 220 to be connected, when the second pulse spacing harvester can gather second between adjacent two second pulse signal
Between be spaced, it is clear that, the second time interval can be the second time data.
Specifically, the second sensor block 211 can be metal derby or other devices as sensor block, the second proximity switch
212 can be electromagnetic induction device, and the second pulse spacing harvester can be Pulse sampling device；Can be by the second sensor block
211 are fixedly connected on the driven wheel by fastener, accordingly, the second proximity switch 212 can be arranged on into belt conveyer
Frame on, and make the position of the second proximity switch 212 corresponding with the second sensor block 211；Second pulse spacing harvester with
Second proximity switch 212 can be connected by circuit.When belt conveyer works, driven pulley rotates, when the second sensor block 211
During with the second 212 face of proximity switch, the second proximity switch 212 can produce continuous second pulse signal, adjacent two
Time interval between pulse signal is the time that driven pulley rotates one week, is the second time data；Staff can survey
The sensor block 211 of flow control two circumference circle at position on the driven wheel.Obvious, second speed computing device 220 can be with
The second linear velocity of driven pulley is calculated according to circumference circle on the second time data and driven pulley.
A kind of specific embodiment is that First Speed computing device 120 and second speed computing device 220 can be work
Industry PLC device；It can be data comparator to compare control device 300；Warning device 400 can be audible-visual annunciator.
Another specific preferred scheme makes, and it can also be industrial PLC equipment to compare control device 300.
Occur unavoidably at work because caused by other reasonses, belt is likely to occur of short duration idol in view of belt conveyer
Right slippery conditions, the present apparatus can also include latency device 500；Latency device 500 control device 300 can connect compared with
Connect, latency device 500 can be used for comparing control device 300 controls warning device 400 to alarm after setting time section.
Specifically, latency device 500 can be overrun control, can by latency device 500 compared with control device
300 circuits connect；Latency device 500 can make to compare control device 300 controls warning device 400 to report after setting time section
Alert, it is setting time section that those skilled in the art can select the suitable time according to actual conditions, so as to avoid because accidentally
Factor causes belt conveyer driving wheel different from the instantaneous linear velocity of driven pulley, and causes warning device 400 to be alarmed, moreover,
When the linear velocity of driving wheel and driven pulley is unequal all the time in setting time section, it can be assumed that showing for what skidding occurred in belt
As controlling warning device 400 to alarm so that comparing control device 300, and then staff is solved belt slippage in time
Problem.
Based on the belt skidding detecting device described in the utility model above-described embodiment, the utility model embodiment also provides
A kind of belt conveyer.The belt conveyer provided has the belt slippage detection dress described in any one in above-described embodiment
Put.
Herein, only emphasis describes difference with other schemes to each preferred scheme, as long as each preferred scheme
Do not conflict, can be combined, the embodiment formed after combination is also within category disclosed in this specification, it is contemplated that
Text is succinct, herein with regard to no longer individually being described to combining formed embodiment.
Described above is only specific embodiment of the present utility model, is made skilled artisans appreciate that or realizing this
Utility model.A variety of modifications to these embodiments will be apparent to one skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.
Therefore, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and original disclosed herein
The reason most wide scope consistent with features of novelty.
Described above is only specific embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
1. belt skidding detecting device, it is characterised in that including First Speed detection means (100), second speed detection means
(200) control device (300) and warning device (400), are compared；Wherein：
The First Speed detection means (100) is used for the first linear velocity for detecting the driving wheel of belt conveyer；Described second
Speed detector (200) is used for the second linear velocity for detecting the driven pulley of the belt conveyer；
The relatively control device (300) and the First Speed detection means (100) and the second speed detection means
(200) it is connected, the relatively control device (300) is used for first linear velocity and second linear velocity；
The warning device (400) control device (300) compared with described connects, and in first linear velocity and described second
The unequal alarm of linear velocity.
2. belt skidding detecting device according to claim 1, it is characterised in that the First Speed detection means
(100) the first sampling apparatus (110) and First Speed computing device (120) are included；
First sampling apparatus (110) is connected with the First Speed computing device (120), first sampling apparatus
(110) it is used to gather the very first time data that the driving wheel rotates；
The First Speed computing device (120) control device (300) compared with described connects, the First Speed computing device
(120) it is used to calculate first linear velocity, and the value of first linear velocity is exported to the relatively control device (300).
3. belt skidding detecting device according to claim 2, it is characterised in that the first sampling apparatus (110) bag
Include the first sensor block (111), the first proximity switch (112) and the first pulse spacing harvester；
First sensor block (111) is arranged on the driving wheel；First proximity switch (112) is arranged on the belt
In the frame of transporter, and it is corresponding with first sensor block (111) arrangement, for sense first sensor block (111) with
Produce the first pulse signal；
The first pulse spacing harvester and first proximity switch (112) and the First Speed computing device
(120) it is connected, the first pulse spacing harvester was used to gathering between very first time between adjacent two first pulse signal
Every the very first time is at intervals of the very first time data.
4. belt skidding detecting device according to claim 2, it is characterised in that the second speed detection means
(200) the second sampling apparatus (210) and second speed computing device (220) are included；
Second sampling apparatus (210) is connected with the second speed computing device (220), second sampling apparatus
(210) it is used to gather the second time data that the driven pulley rotates；
The second speed computing device (220) control device (300) compared with described connects, the second speed computing device
(220) it is used to calculate second linear velocity, and the value of second linear velocity is exported to the relatively control device (300).
5. belt skidding detecting device according to claim 4, it is characterised in that the second sampling apparatus (210) bag
Include the second sensor block (211), the second proximity switch (212) and the second pulse spacing harvester；
Second sensor block (211) is arranged on the driven pulley；Second proximity switch (212) is arranged on the belt
In the frame of transporter, and it is corresponding with second sensor block (211) arrangement, for sense second sensor block (211) with
Produce the second pulse signal；
The second pulse spacing harvester and second proximity switch (212) and the second speed computing device
(220) it is connected, the second pulse spacing harvester was used to gathering between the second time between adjacent two second pulse signal
Every second time interval is second time data.
6. belt skidding detecting device according to claim 4, it is characterised in that the First Speed computing device
(120) and second speed computing device (220) is the programmable logic controller equipment of industry.
7. belt skidding detecting device according to claim 1, it is characterised in that it is described relatively control device (300) be
Data comparator or the programmable logic controller equipment of industry.
8. belt skidding detecting device according to claim 1, it is characterised in that the warning device (400) is acousto-optic
Alarm.
9. belt skidding detecting device according to claim 1, it is characterised in that also including latency device (500)；
The latency device (500) control device (300) compared with described connects, and the latency device (500) is used for the ratio
The warning device (400) is controlled to alarm after setting time section compared with control device (300).
10. belt conveyer, it is characterised in that detect dress including the belt slippage as described in any one in claim 1-9
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720525935.0U CN206857604U (en) | 2017-05-12 | 2017-05-12 | Belt skidding detecting device and belt conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720525935.0U CN206857604U (en) | 2017-05-12 | 2017-05-12 | Belt skidding detecting device and belt conveyer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206857604U true CN206857604U (en) | 2018-01-09 |
Family
ID=60824023
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720525935.0U Expired - Fee Related CN206857604U (en) | 2017-05-12 | 2017-05-12 | Belt skidding detecting device and belt conveyer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040468A (en) * | 2018-01-15 | 2019-07-23 | 中冶长天国际工程有限责任公司 | A kind of method for diagnosing faults and device of belt feeder |
| CN110525915A (en) * | 2019-09-09 | 2019-12-03 | 龙岩烟草工业有限责任公司 | Belt conveyor and belt slippage detection method |
| CN110902316A (en) * | 2019-11-13 | 2020-03-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Large-scale transportation belt slip detection method |
| CN111153156A (en) * | 2018-12-30 | 2020-05-15 | 上海天交机电科技有限公司 | Cleaning control system and method for material conveying belt |
| CN114224075A (en) * | 2021-12-14 | 2022-03-25 | 佛山市博高办公家具有限公司 | Intelligent office table with automatic cable-collecting desktop wires |
| CN114485869A (en) * | 2022-02-11 | 2022-05-13 | 南京赛摩三埃工控设备有限公司 | Speed measurement calibration control system and method for belt weigher and belt weigher |
-
2017
- 2017-05-12 CN CN201720525935.0U patent/CN206857604U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040468A (en) * | 2018-01-15 | 2019-07-23 | 中冶长天国际工程有限责任公司 | A kind of method for diagnosing faults and device of belt feeder |
| CN110040468B (en) * | 2018-01-15 | 2021-03-05 | 中冶长天国际工程有限责任公司 | Fault diagnosis method and device for belt conveyor |
| CN111153156A (en) * | 2018-12-30 | 2020-05-15 | 上海天交机电科技有限公司 | Cleaning control system and method for material conveying belt |
| CN110525915A (en) * | 2019-09-09 | 2019-12-03 | 龙岩烟草工业有限责任公司 | Belt conveyor and belt slippage detection method |
| CN110902316A (en) * | 2019-11-13 | 2020-03-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Large-scale transportation belt slip detection method |
| CN114224075A (en) * | 2021-12-14 | 2022-03-25 | 佛山市博高办公家具有限公司 | Intelligent office table with automatic cable-collecting desktop wires |
| CN114485869A (en) * | 2022-02-11 | 2022-05-13 | 南京赛摩三埃工控设备有限公司 | Speed measurement calibration control system and method for belt weigher and belt weigher |
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Granted publication date: 20180109 Termination date: 20190512 |