CN86207515U - Microcomputer controlled dual cantilever belt balance - Google Patents
Microcomputer controlled dual cantilever belt balance Download PDFInfo
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- CN86207515U CN86207515U CN 86207515 CN86207515U CN86207515U CN 86207515 U CN86207515 U CN 86207515U CN 86207515 CN86207515 CN 86207515 CN 86207515 U CN86207515 U CN 86207515U CN 86207515 U CN86207515 U CN 86207515U
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- belt conveyer
- scale
- microcomputer
- metering
- circuit
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Abstract
The utility model discloses a microcomputer controlled dual cantilever belt balance which comprises a frame type belt conveyer, a hanging support base, a dual cantilever balance body and an electronic metering control system. While in use, the dual cantilever structure is adopted, so the material weight can simultaneously effect on two to four sensors; a double-cutting edge hanging support base is adopted between the belt conveyer and the dual cantilever balance body, a multi-path collection magnifying detection system is adopted, and the metering method of microcomputer control, continuous operation, quantitative charging and intermittent weighing is adopted. The metering process is not effected by the material impact, the uneven material distribution, the velocity change of the belt transmission and other factors, so the high metering accuracy and the proportioning accuracy can be realized, and the high automation degree can be achieved. The utility model is suitable for the proportioning and metering of the production line of construction material industry, chemical industry, coal industry, etc.
Description
The utility model is to be applied to the batching of industries such as building materials, chemical industry, metallurgy, coal and the belt conveyer scale of metering.
The belt conveyer scale that uses in China's commercial production at present mainly contains two kinds; a kind of is roller-type skin belt scale; this scale is in existing tens plant produced of China; the multiple roll belt conveyer scale of the big and weighing apparatus factory of the Japan that introduces as Shanghai East China Electronics Co., Ltd instrument plant, the multiple roll belt conveyer scale of the U.S. Mei Like company of Yingkou, Liaoning instrument three factories introduction.The subject matter that they exist is: scale structure is huger, costs an arm and a leg, and the factor that influences measuring accuracy is more, as the degree of tightness of belt, the levels of precision of setting angle, the size of running deviation value, the quality of machining etc., so technical requirement is higher, the fitting operation maintenance difficult.Owing to making it, these reasons in medium-sized and small enterprises, are difficult to use.Also having a kind of is the single swing arm type belt conveyer scale, is the advanced electronic scales that present China produces voluntarily, and domestic representational product is the DCM-1 type belted electronic balance that Wuxi building equipment factory produces.This scale has adopted the method for single-cantilever scale body continuous measurement, and this just requires belt travelling speed Vt constant, and the unit interval, feeding coal qt was constant, could keep the material on the belt effective length evenly to distribute like this, makes the heavy q of thing on the unit length
LBe constant.And above in actual use three parameters can not all keep constant, have therefore just caused some insoluble problems, often adopt the method for transferring qt in the use, make q
L* Vt=constant keeps accurate measurement, and q in the adjustment process
LBe a unstable parameter, therefore in long-time running, often cause that owing to inhomogeneous feed the material center of gravity moves, and causes error in dipping.Be difficult to revise other simultaneously in the continuous-feeding process and put the error that drift causes; Almost can't eliminate material and impact the vibration error that causes, dust accumulation error; Be used for blending process owing to unit interval feeding coal instability, be difficult to guarantee the precision of charge ratio; And complete machine is adjusted difficulty.
It is little that the purpose of this utility model provides a kind of volume, the measuring apparatus that cost is low, precision is high, automaticity is high, easy to adjust.
The utility model is at present widely used single-cantilever belt conveyer scale, and some shortcomings that method caused of continuous measurement, adopted double-cantilever structure scale body, multi pass acquisition amplification detection system, and continuous operation, dosing, the interruption of the Controlled by Microcomputer metering method of weighing, overcome the shortcoming that the single-cantilever structure exists from principle.Principal character of the present utility model is to have adopted the double-cantilever structure of hanging on the scale pillar body, with the frame band conveyor is suspended on two cantilevers, and adopt two to four load sensors, this structure has just guaranteed the stressed influence that is not subjected to the material skewness of load sensor, alleged heavy material is pressed its different distributions on band conveyor, is reacted to by this example to be positioned on the sensor in different positions.Multichannel loading voltage signal by load sensor output amplifies and the addition summation through the multichannel integrating amplifier, loading voltage signal after will suing for peace by input interface circuit then is transformed to binary digital signal, the input microcomputer, measure and compare by microcomputer, and send instruction according to metering, relatively result, the control total system is finished the workflow that continuous operation, dosing, interruption are weighed.
It is low to the utlity model has cost, and volume is little, install easy to adjust, the metering, the distributing precision height, the automaticity advantages of higher.
Fig. 1 is a double-cantilever belt weigher scale side view.
Fig. 2 is for hanging the side view of bearing (15).
Fig. 3 is the vertical view of cantilever.
Fig. 4 is that double-cantilever belt weigher detects, the controlling party block diagram.
Fig. 5 is a two-way integrating amplifier schematic diagram.
Fig. 6 is the schematic diagram of peripheral hardware control circuit (37).
Fig. 7 is the warning circuit schematic diagram.
In conjunction with the accompanying drawings the utility model is described in detail now.
Described the view of the utility model scale body portion in Fig. 1, Fig. 2, Fig. 3, shown in Figure 3 pair of cantilever is a framed structure, and cantilever (22) is to crank arm, and cantilever (25) is a straight-arm.Cantilever (22) and (25) one ends are equipped with and are used for the adjustable balance weight (23) that the balance own wt is used, the other end is equipped with pressing plate (16) and affacts on the load sensor (17), this end is equipped with simultaneously hangs bearing (15), by hanging bearing (15) two cantilever scale bodies and band conveyor are linked, band conveyor is suspended on two cantilevers (22), (25).Two cantilevers (22), (25) are suspended on the scale pillar body (26) by cross-spring sheet (21), hanger (20), form a fulcrum.The utility model can adopt two to four load sensors (17) according to different needs.Load sensor (17) then can be contained on the sensor support base (18) of the homonymy, diagonal positions of scale body or four jiaos.Two cantilevers can adopt straight-arm (22) or crank arm (25) as required, or a straight-arm (22), one crank arm (25).The bearing (15) of hanging illustrated in figures 1 and 2 is by two τ type supports (31), (32), the upper and lower edge of a knife (29), and suspension ring (28) and suspension ring pad (30) are formed.τ shape support (32) is fixed on two cantilevers with fastening bolt, each pin of τ shape support (31) and (32) is gone into an edge of a knife (29), τ shape support (31) edge of a knife is downward, τ shape support (32) edge of a knife makes progress, and two τ shape supports (31), (32) connect by the suspension ring (28) that are hung on the upper and lower edge of a knife.Between the edge of a knife (29) and suspension ring (28) suspension ring pad (30) is housed.
Composition and connection, detection and the controlling party block diagram of electronics metering control section of the present utility model are seen Fig. 4, under the effect of weighing weight of material, the voltage signal that sensor (17) output changes with weight of material, this signal is delivered to multichannel integrating amplifier (33).The input end of multichannel integrating amplifier (33) is connected with sensor (17), and output terminal is connected with the input end of input interface circuit (34).Multichannel integrating amplifier (33) amplifies respectively each road signal of sensor (17) input, addition summation then, export the analog voltage signal of one road reaction mass weight, input interface circuit (34) is transformed to binary digital signal with this analog voltage signal, delivers to microcomputer (35) then.The input end of microcomputer (35) is connected with input interface circuit (34), and output terminal is connected with the input end of output interface circuit (36).The output terminal of output interface circuit (36) is connected with warning circuit (38) with peripheral hardware control circuit (37), and the output terminal of peripheral hardware control circuit (37) is connected with vibra feeder (39).
Multichannel integrating amplifier (33) is that amplifier stage (40) and totalizer (41) are formed, and Figure 5 shows that a two-way integrating amplifier schematic diagram, and n road integrating amplifier then can connect n amplifier stage (40) by the A point in Fig. 5 if desired.Amplifier stage shown in Figure 5 (40) and totalizer (41) adopt integrated transporting discharging to constitute, and also can adopt discrete component to constitute.Amplifier (40) is by integrated transporting discharging Ic
1The resistance bridge amplifier that constitutes is added to the integrated transporting discharging IC of two amplifiers (40) respectively from two road signals of sensor (17)
1Inverting input.Integrated transporting discharging IC in the circuit
1, IC
2, IC
3Feedback branch integrating capacitor C in parallel respectively
1, C
2, C
3, when this electric capacity was too small, storage effect was poor, and is unfavorable to suppressing vibration interference; When excessive, time constant is strengthened, the hysteresis phenomenon of weighing generally adopts 0.1 μ f to 1 μ f.When adopting multichannel to amplify in the circuit, during as the n road, weighting resistor Ra then
1, Ra
2The parallel connection value of Ran should equal the resistance R i of totalizer (41) substantially; Work as Ra
1, Ra
2When the resistance between the Ran all equated, totalizer (41) was finished the addition task of 1:1, changes the ratio between them, then can change the ratio that each road signal occupies in total output signal.IC in the circuit
3Can connect into amplifier or voltage follower.
Input interface plate (34) and output interface plate (36) all adopt and microcomputer (35) Universal interface board that is complementary.
Peripheral hardware control circuit (37) adopts circuit as shown in Figure 6, also can adopt other control circuit.
Fig. 7 is the schematic diagram of warning circuit (38), is the audio frequency oscillator at intermittence that is made of digital integrated circuit, drives sound horn through the two-stage directcoupled amplifier, and the control of audible alarm circuit is by transistor BG
4Conducting or end, the power supply of control sound circuit is realized.
The automatic gauge mode that the utility model has adopted continuous operation, dosing, interruption to weigh.The groundwork process is as follows: when material is added on the band conveyor belt conveyor (5), weight of material is by the long pin of band conveyor (2) and hang support (15), affact on two cantilevers (22), (25), and affact on each load sensor (17) by the pressing plate (16) on two cantilevers (22), (25).The voltage signal that multichannel integrating amplifier (33) is exported each load sensor (17) amplifies, addition, the analog voltage signal that output one changes with weight of material, then this analog voltage signal is transported to input interface circuit (34), by input interface circuit (34) analog voltage signal is transformed to binary digital signal, this digital signal is delivered to microcomputer (35) and is measured, and with microcomputer (35) in the gravimetric value digital signal that presets relatively.When microcomputer (35) variable during near prevalue, microcomputer (35) sends instruction, gives the delivery rate of peripheral hardware control circuit (37) control slowing down dispenser (39) through output interface circuit (36); When microcomputer (35) when variable reaches predetermined value, microcomputer (35) sends instruction and gives peripheral hardware control circuit (37) through output interface circuit (37), control dispenser (39) stops feed, through postponing after a while, microcomputer (35) calculates the actual value of current weighing, finishes the loading procedure of a weighing.Band conveyor is still remaining in operation simultaneously, after running a period of time, enter uninstall process, sensor (17) is stressed to be reduced gradually, output voltage signal also constantly diminishes, and when weight of material was not more than minimum starting value on scale, microcomputer (35) sent the loading initiating signal by output interface circuit (36) to peripheral hardware control circuit (37), control dispenser (39) is feed again, descends a kind of weighing.In metering process, when last scale variable and predetermined value had one error ± △ P, one scale corrections ± △ P value automatically then in metering process in back guaranteed that afterwards the mean value of a scale and last scale equals to be scheduled to mean value.Native system can reach the metering and the batching of 8 platform balances simultaneously by microcomputer.
An embodiment of the present utility model, can be realized in conjunction with the accompanying drawings, Fig. 1 has provided the side view of the utility model scale body embodiment, the frame of band conveyor adopts four long pin (2) and four short pin (12) among the figure, long pin (2) and hang support (15) and link, article four, lacking pin (12) and band conveyor base plate (11) connects, motor (6) and speed reduction unit (7) are housed on base plate (11), the band conveyor center of gravity is reduced, stable operation, the transmission between motor (6) and the speed reduction unit (7) are by belt pulley (9), (10) vee belt is finished between.Drive roll (4) connects driven cylinder (14) by belt conveyor (5), self-regulated bolt (13) is housed, the degree of tightness that is used to regulate belt conveyor (5) on the driven cylinder (14).Belt pulley (8) links by driving belt and the belt pulley (3) that is fixed on the drive roll (4).Fig. 2 is a side view of hanging bearing (15), respectively disappears on τ shape support (31) and (32) into an edge of a knife (29), and it is downward that support (31) is gone up the edge of a knife, and support (32) is gone up the edge of a knife upwards, and the upper and lower edge of a knife (29) connects by C shape suspension ring (28).τ shape support (32) links by fastening bolt and two cantilever (22), (25), and τ shape support (31) links by fastening bolt and the long pin of band conveyor (2).Two cantilevers (22) and (25) link by four pairs of cross-spring sheets (21), hanger (20) and scale pillar body (26), and forming with the cross-spring sheet is the lever system of fulcrum, and two cantilevers (22), (25) are suspended on the scale pillar body (26).Structure shown in Figure 3 is adopted in two cantilevers (22), (25), and an end is equipped with two adjustable balance weights (23), and screw rod (25), and the other end has screw, is used for connecting with T shape support (32) and pressing plate (16).Cantilever in the present embodiment (22) is a straight-arm, and cantilever (25) is for cranking arm.Adopt two load sensors (17), be loaded on the sensor support base (18) of scale body one side.Go up pipe at scale body base (19) dust cover (27) is arranged for preventing dust stratification.
The electrometer amount control system adopts the two-way integrating amplifier, and circuit theory diagrams are Fig. 5, integrating capacitor C in the circuit
1, C
2, C
3Capacity be 0.68 μ f, weighting resistor Ra
1And Ra
2Resistance be 5.1K Ω.Resistance R
1, R
2, R
9, resistance be respectively 2K Ω, 2.2K Ω, 1K Ω, resistance R i, R
5, R
8Resistance be 2.4K Ω, resistance R
3, R
4, R
6, R
7Resistance be 5.1K Ω, potentiometer W
1, W
2, W
4, W
6Be 10K Ω, W
3Can adopt 10～30K Ω, W
5Can adopt 20～51K Ω, IC
1, IC
2, IC
3Be μ A741.
Microcomputer (35) adopts the TRS-80 system that is applicable to commercial Application.
Input interface circuit (34) adopts the general Z-80 input interface plate that is made of elements such as ADC0809.
Output interface plate (36) adopts the general photoelectricity that is made of elements such as 74L139,74L273 to isolate the output interface plate.
Peripheral hardware control circuit (37) and warning circuit (38) adopt Fig. 6 and circuit shown in Figure 7 respectively.The equipment that dispenser (39) uses for the production scene.
The utlity model has higher metering, distributing precision and automaticity. Be mainly used in batching and metering on the industry production lines such as building materials, chemical industry, metallurgy, coal, such as the batching on the cement producing line and metering, also can be used for the cumulative measurement of other industry.
Claims (8)
1, a kind of by the frame band conveyor, hang the belt conveyer scale that bearing, cantilever scale body, electrometer amount control system are formed, it is characterized in that: a. scale body portion has adopted double-cantilever structure, and two frame-type suspended walls are hung on four scale pillar bodies by four pairs of spring leafs and hanger; B. the frame band conveyor is hung on two cantilevers that bearing is suspended on the scale body by four; C. adopt two load sensors to be installed on the sensor support base of scale body one side or diagonal position, or be installed in four load sensors on four sensor support bases of scale body two sides; D. multi pass acquisition amplification detection system and the microcomputer control circuit be made up of sensor, multichannel integrating amplifier of electrometer amount control system formed.
2, belt conveyer scale according to claim 1, it is characterized in that hanging bearing (15) is the double-pole mouth structure, by τ shape support (31), (32), the upper and lower edge of a knife (29), suspension ring (28) and suspension ring pad (30) are formed.
3, belt conveyer scale according to claim 1 is characterized in that two cantilevers can adopt two straight-arms, two to crank arm or a straight-arm and is cranked arm.
4,, it is characterized in that being equipped with on the cantilever frame balance weight (23) and balance weight adjuster bar (24) according to claim 1 or the described belt conveyer scale of claim 3.
5, belt conveyer scale according to claim 1 is characterized in that the output terminal of each road sensor (17) is received the inverting input of multichannel integrating amplifier (33); Multichannel integrating amplifier (33) links by input interface circuit (34) and microcomputer (35); Microcomputer (35) links by output interface circuit (36) and peripheral hardware control circuit (37) and warning circuit (38); Peripheral hardware control circuit (37) links with peripheral hardware dispenser (39).
6,, it is characterized in that amplifier stage (40) and totalizer (41) that multichannel integrating amplifier (33) is made of integrated operational amplifier circuit form according to claim 1 or the described belt conveyer scale of claim 5; Voltage signal from different sensors (17) is added in IC in each amplifier stage (40) respectively
1Inverting input, constitute the bridge circuit amplified signal level.
7, belt conveyer scale according to claim 6 is characterized in that the IC in the amplifier stage (40)
1, and the IC in the totalizer (41)
2, IC
3Feedback branch on be parallel with integrating capacitor C respectively
1, C
2, C
3
8, belt conveyer scale according to claim 7 is characterized in that integrating capacitor C
1, C
2, C
3Capacity at 0.1 μ f between the 1 μ f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86207515 CN86207515U (en) | 1986-10-22 | 1986-10-22 | Microcomputer controlled dual cantilever belt balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86207515 CN86207515U (en) | 1986-10-22 | 1986-10-22 | Microcomputer controlled dual cantilever belt balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86207515U true CN86207515U (en) | 1987-09-23 |
Family
ID=4809929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86207515 Expired - Lifetime CN86207515U (en) | 1986-10-22 | 1986-10-22 | Microcomputer controlled dual cantilever belt balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86207515U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356147C (en) * | 2003-03-05 | 2007-12-19 | 株式会社石田 | Metering apparatus |
| CN102538923A (en) * | 2011-12-13 | 2012-07-04 | 陕西省农业机械研究所 | Continuous measuring electronic belt scale |
| CN103640907A (en) * | 2013-12-05 | 2014-03-19 | 重庆市酉阳县酉好化肥有限公司 | Accurate-metering charging device |
-
1986
- 1986-10-22 CN CN 86207515 patent/CN86207515U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356147C (en) * | 2003-03-05 | 2007-12-19 | 株式会社石田 | Metering apparatus |
| CN102538923A (en) * | 2011-12-13 | 2012-07-04 | 陕西省农业机械研究所 | Continuous measuring electronic belt scale |
| CN103640907A (en) * | 2013-12-05 | 2014-03-19 | 重庆市酉阳县酉好化肥有限公司 | Accurate-metering charging device |
| CN103640907B (en) * | 2013-12-05 | 2016-01-13 | 重庆市酉阳县酉好化肥有限公司 | Accurate measurement charging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU02 | Correction of gazette and description of patent for utility model |
Correction item: Designer Correct: Zhang Dianqing|Li Binglu|Wang Xiqi|Zhang Yudong|Lv Junfeng|Yuan Chizhu False: Zhang Dianqing|Li Bing|Wang Xi|Zhang Yu|Lv Jun|Yuan Chi|Li Binglu|Wang Xiqi|Zhang Yudong|Lv Junfeng|Yuan Chizhu Number: 39 Page: 48 Volume: 3 |
|
| ERR | Gazette correction |
Free format text: CORRECT: DESIGNER; FROM: ZHANG DIANQING LI BING WANG XI ZHANG YU LV JUN YUAN QI LI BINGLU WANG XIQIZHANG YUDONG LV JUNFENG YUAN QIZHU TO: ZHANG DIANQING LI BINGLU WANG XIQI ZHANG YUDONG LV JUNFENG YUAN QIZHU |
|
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |