CN108901379A - Online weight measuring device and method for bundling machine, online weighing system and bundling method - Google Patents
Online weight measuring device and method for bundling machine, online weighing system and bundling method Download PDFInfo
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- CN108901379A CN108901379A CN201810434031.6A CN201810434031A CN108901379A CN 108901379 A CN108901379 A CN 108901379A CN 201810434031 A CN201810434031 A CN 201810434031A CN 108901379 A CN108901379 A CN 108901379A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F15/00—Baling presses for straw, hay or the like
- A01F15/08—Details
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F15/00—Baling presses for straw, hay or the like
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
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- Refuse-Collection Vehicles (AREA)
- Basic Packing Technique (AREA)
Abstract
The invention discloses an online weight measuring device and method for a bundling machine, an online weighing system and a bundling method, belongs to the technical field of agricultural and animal husbandry machinery, and aims to solve the problems that the existing round bundling machine cannot realize real-time monitoring of the weight of a single bale in a bundling process, and cannot meet the accurate requirement of special industries such as papermaking and power generation on the weight of the single bale. The scheme of the invention is as follows: the bundling machine comprises a pickup, and the pickup comprises a roller, a pickup wheel shaft and two pickup fixing frames; the online weight measuring device comprises two weight measuring units, and the two weight measuring units are symmetrically arranged at two ends of the pickup; the weight measuring unit comprises a weighing sensor and a speed measuring sensor, the weighing sensor is arranged on a picker wheel shaft between the roller and the picker fixing frame, and is rotationally connected with the picker wheel shaft and fixedly connected with the picker fixing frame; the speed sensor is arranged on the outer side of the pick-up fixing frame, coaxially connected with the wheel shaft of the pick-up and fixedly connected with the pick-up fixing frame.
Description
Technical field
The invention belongs to farming and animal husbandry field of mechanical technique, are related to the online weighing technology of baler.
Background technique
Machine for forming cylindrical bale is mainly used for using commonplace equipment in present agriculture-stock production by the flexible crop such as herbage
Straw field pickup breaks into circular bale after entering machine for forming cylindrical bale.But the press-box volume of traditional machine for forming cylindrical bale is certain, i.e. press-box
Volume does not change with bale size, is equivalent in press-box and fills herbage, so that the bale core got is loose, outer
Layer is closely knit.When bale arrival certain volume and the degree of packing, indicate that bundling is completed, and bale weight at this time accurate can not obtain
Know, the mark and the threshold value of opened door time completed using bale weight as bundling be current baler general lack of function
Can, the method for online weighing by be a very worth further investigation project.
Utility model patent that Jiangsu University Liu Chao, Yin Jianjun et al. are invented " a kind of baler dynamic weighing and valuation
Device and control system " (country origin：China；Publication number：CN206563605U；Publication date：20171017) proposing one kind can
It weighs, count automatically in baler operation process, monitoring the method for bale tension.This method is the bale export after bundling is complete
During rolling across weighing platform, gravity sensor acquire bale gravity perpendicular to weighing platform component, can not real-time monitoring and
Whether the weight for controlling bale reaches the standard and the mark for opening door that preset value is completed as bundling using bale weight.
MAE Northern Co., Ltd.'s Huarong river, Yang Hongwei et al. are invented " a kind of to be suitable for pick-up round baler
Adjustable bale tension hydraulic control device " (country origin：China；Publication number：CN203040228U；Publication date：
20130710) utility model patent elaborates the bundling method of " interior wound form ", utilizes hydraulic device setting high-pressure safety valve
It is pressed, the pressure being pressed in adjusting the compression roll of interlinking lever end on the external cylindrical surface of round bale, pressure is bigger, and bale tension is bigger,
To realize the function that machine for forming cylindrical bale adjusts density, " density " described in the method actually degree of packing, because every kind of flexible crop exists
Its respective quality is different under same volume, in addition can not monitor the weight of bale in real time.
Anhui Xin An Machinery Manufacturing Co., Ltd. Zhang Gaowei, blue sky et al. invention " a kind of machine for forming cylindrical bale bale tension is automatic
Regulating device " (in examining) (country origin：China；Publication number：CN107278532A；Publication date：20171024) it was formed in bale
Apply constant pressure in journey to bale, ensure that the consistent of compactness inside and outside bale, by adjusting between pressure roller and bale
Pressure size adjusts the density of bale.
Three source of students agriculture and animal husbandry comprehensive exploitation Co., Ltd Wei of Zhangye is self-evident, a kind of " agricultural machinery of Zhao Huaiyong et al. invention
It is dedicated can dust suction weigh automatically baler " (country origin：China；Publication number：CN206442724U；Publication date：20170829) it passes through
It is bundled to cross bundled room, then bale is fixed using string tying device, opens electric switch and controls electric pushrod, bale is logical
It crosses and unloads bundle door and be sent on weighing bottom plate, static state is lower to weigh to it by weighing sensor.
Since bale in bundling job engineering and workpiece are constantly moving, so being caused greatly to the installation of weighing sensor
Difficulty causes online weighing in real time cannot achieve.Existing bundling technology passes through prototyping method mostly and presets bale tension
(" density " actually degree of packing in fact, however every kind of flexible crop its respective quality under same volume is different),
Or measurement has formed the weight of bale, cannot achieve the real-time monitoring to bale weight during bundling, is unable to satisfy and makes
Accurately requirement of the special industries such as paper, power generation to single bale weight.The weight real time monitoring mark from the point of view of long-term view toward investment
Influence of the quasi- missing to baler industry is huge.
Summary of the invention
The invention aims to solve existing machine for forming cylindrical bale to cannot achieve real-time monitoring to bale weight during bundling,
It is unable to satisfy the special industries such as papermaking, power generation and single bale weight the problem of precisely requirement, is provided a kind of for bundling
The online weight-measuring device and method of machine.
Online weight-measuring device of the present invention for baler, the baler includes pickup, the pickup packet
Include roller 2-1, pickup wheel shaft 2-2 and two pickup fixed frame 2-3；
The device of the online check weighing includes two weighing cells 3, and two weighing cells 3 are symmetricly set on the two of pickup
End；
The weighing cell 3 includes weighing sensor 3-1 and velocity sensor 3-2, and weighing sensor 3-1 is arranged in roller
On pickup wheel shaft 2-2 between 2-1 and pickup fixed frame 2-3, and with pickup wheel shaft 2-2 rotation connection and pickup
Fixed frame 2-3 is fixedly connected；Velocity sensor 3-2 is arranged in the outside of pickup fixed frame 2-3, and with pickup wheel shaft 2-2
Coaxial connection is fixedly connected with pickup fixed frame 2-3.
Preferably, weighing cell 3 further includes bearing 3-3 and bearing base 3-4, and bearing 3-3 is arranged in pickup wheel shaft 2-2
On, weighing sensor 3-1 is fixed on bearing base 3-4, to realize the rotation of weighing sensor 3-1 Yu pickup wheel shaft 2-2
Connection.
Preferably, weighing cell 3 further includes L-type fixed frame 3-5, the transverse slat and weighing sensor 3-1 of L-type fixed frame 3-5
It is fixedly connected, the riser of L-type fixed frame 3-5 is fixedly connected with the inner sidewall of pickup fixed frame 2-3.
Preferably, weighing cell 3 further includes shaft coupling 3-6, the output shaft and pickup wheel shaft 2-2 of velocity sensor 3-2
Coaxial be connected is realized by shaft coupling 3-6.
Preferably, weighing cell 3 further includes U-shaped fixed frame 3-7, and velocity sensor 3-2 is fixed by U-shaped fixed frame 3-7
On the lateral wall of pickup fixed frame 2-3.
Preferably, velocity sensor 3-2 uses tachometer generator or speed measuring coder.
The present invention provides a kind of online method for measuring weight, and this method is：
By formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2(t) it is respectively weighing sensor 3-1 in two weighing cells 3
The instantaneous mass weight effectively weighed in length in the pickup that moment t is measured；
Wherein v1(t)、v2It (t) is respectively that velocity sensor 3-2 in two weighing cells 3 is being picked up in the material that moment t is measured
Pick up the instantaneous speed of service on device.
The present invention provides a kind of on-line weighting system for baler, including controller 4 and two weighing cells 3, surveys
Weight unit 3 includes weighing sensor 3-1 and velocity sensor 3-2, and the information that controller 4 acquires sensor in real time is handled,
Realize online weighing；
The controller 4 includes PLC, booster power, pressure transmission device, AUTOMOTIVE RELAY KA1, AUTOMOTIVE RELAY KA2, sound
Light crossing-signal and tail-gate hydraulic valve；
The input of booster power terminates 12V vehicle power supply, and the 24V power supply of booster power output is combined aural and visual alarm, tail-gate
Hydraulic valve, PLC, velocity sensor 3-2 and pressure transmission device provide working power；
The input terminal X0 of the instantaneous mass weight signal output end connection PLC of weighing sensor 3-1；
The instantaneous running speed signal of velocity sensor 3-2 passes through the current data of the port COM2 of pressure transmission device and PLC
Communication；
AUTOMOTIVE RELAY KA1 coil in parallel between the Y0 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA2 coil in parallel between the Y1 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA1 normally opened contact is connected in the current supply circuit that 24V power supply provides for tail-gate hydraulic valve；
AUTOMOTIVE RELAY KA2 normally opened contact is connected in the current supply circuit that 24V power supply provides for combined aural and visual alarm.
It preferably, further include touch screen, the working power of the touch screen is provided by the 24V power supply that booster power exports,
The port COM3 of touch screen and PLC carry out data communication.
The present invention provides a kind of bundling method, and this approach includes the following steps：
Step 1: initialization：The weight of PLC acquisition is reset, and default bundling weight WT；
Step 2: dragger drives baler to advance, and the pickup of baler is enabled to start work；
Step 3: PLC acquires the two paths of signals that two weighing cells 3 are passed back in real time, every road signal includes weighing and sensing
The pickup that device 3-1 the is measured material that instantaneous mass weight signal in length and velocity sensor 3-2 are measured of effectively weighing exists
The instantaneous speed of service on pickup；
Step 4: pressing formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2(t) it is respectively weighing sensor 3-1 in two weighing cells 3
The instantaneous mass weight effectively weighed in length in the pickup that moment t is measured；
Wherein v1(t)、v2It (t) is respectively that velocity sensor 3-2 in two weighing cells 3 is being picked up in the material that moment t is measured
Pick up the instantaneous speed of service on device；
Step 5: judging whether to meet condition W >=WT,
If result be it is yes, show that current bale weight is up to standard, execute step 6；If the result is negative, show current bale weight
Measure below standard, pickup works on, and returns to step three；
AUTOMOTIVE RELAY KA2 normally opened contact is allowed to be closed Step 6: PLC issues instruction, combined aural and visual alarm is that the sending of machine hand mentions
Show sound, machine hand enables dragger halt according to the prompt tone, pickup stops working；
Step 7: PLC sending enables AUTOMOTIVE RELAY KA1 normally opened contact be closed in the case where the speed of pickup is zero
Instruction, enable tail-gate hydraulic valve work once electrified open door, bale falls from door.
Beneficial effects of the present invention：
The present invention is capable of the weight of on-line real-time measuremen and control bale, and the mark completed using bale weight as bundling
With the threshold value for opening the door time, the precision of bale weight is improved, solves the problems, such as that bale weight is inconsistent；Save weighing work
Sequence accurately records workload：Bale weight, bale number, bale total weight, improve baler function and bundling standard.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of on-line weighting system of the present invention；
Fig. 2 is the structural schematic diagram that the online weight-measuring device of the present invention for baler is mounted on baler；
Fig. 3 is the partial enlarged view of Fig. 2；
Fig. 4 is the electrical schematic diagram of on-line weighting system of the present invention；
Fig. 5 is the flow chart of bundling method.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Specific embodiment one illustrates present embodiment in conjunction with Fig. 1~3, exists described in present embodiment for baler
Line weight-measuring device, the baler include pickup, and the pickup includes roller 2-1, pickup wheel shaft 2-2 and two pickups
Device fixed frame 2-3；
The device of the online check weighing includes two weighing cells 3, and two weighing cells 3 are symmetricly set on the two of pickup
End；
The weighing cell 3 includes weighing sensor 3-1 and velocity sensor 3-2, and weighing sensor 3-1 is arranged in roller
On pickup wheel shaft 2-2 between 2-1 and pickup fixed frame 2-3, and with pickup wheel shaft 2-2 rotation connection and pickup
Fixed frame 2-3 is fixedly connected；Velocity sensor 3-2 is arranged in the outside of pickup fixed frame 2-3, and with pickup wheel shaft 2-2
Coaxial connection is fixedly connected with pickup fixed frame 2-3.
Further, weighing cell 3 further includes bearing 3-3 and bearing base 3-4, and bearing 3-3 is arranged in pickup wheel shaft
On 2-2, weighing sensor 3-1 is fixed on bearing base 3-4, to realize weighing sensor 3-1's and pickup wheel shaft 2-2
Rotation connection.
Further, weighing cell 3 further includes L-type fixed frame 3-5, the transverse slat and weighing sensor of L-type fixed frame 3-5
3-1 is fixedly connected, and the riser of L-type fixed frame 3-5 is fixedly connected with the inner sidewall of pickup fixed frame 2-3.
Further, weighing cell 3 further includes shaft coupling 3-6, the output shaft and pickup wheel shaft 2- of velocity sensor 3-2
2 realize coaxial be connected by shaft coupling 3-6.
Further, weighing cell 3 further includes U-shaped fixed frame 3-7, and velocity sensor 3-2 is solid by U-shaped fixed frame 3-7
It is scheduled on the lateral wall of pickup fixed frame 2-3.
Further, velocity sensor 3-2 uses tachometer generator or speed measuring coder.Tachometer generator output is mould
Quasi- signal, speed measuring coder output is digital signal, the achievable purpose that tests the speed of the invention of the two.
Working principle：Pickup is the mandatory component of baler, and for picking up agricultural crop straw, baler is by the agriculture of pickup
Crop material breaks into bale, and two weighing cells are arranged in present embodiment on pickup, obtains its speed online and pickup is arrived
The weight of crops carries out online weighing on the basis of both signals.
Weighing sensor 3-1 is rotatablely connected using bearing and pickup wheel shaft 2-2, and the rotation of pickup does not influence it and claims
Weight；And velocity sensor 3-2 is coaxially coupled using shaft coupling with pickup wheel shaft 2-2, the revolving speed of pickup is obtained in real time.
Specific embodiment two, present embodiment are based on the online weight-measuring device for being used for baler described in embodiment one
To realize online method for measuring weight.
This method is：
By formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2(t) it is respectively weighing sensor 3-1 in two weighing cells 3
The instantaneous mass weight effectively weighed in length in the pickup that moment t is measured；
Wherein v1(t)、v2It (t) is respectively that velocity sensor 3-2 in two weighing cells 3 is being picked up in the material that moment t is measured
Pick up the instantaneous speed of service on device.
The instantaneous weight acquired in real time, speed are integrated, q (t) v (t) multiplied result is the instantaneous flow Q of material
(kg/s).Because the inhomogeneities and pickup speed of material conveying change over time, so added up within the T time period,
Integral result (cumulative weight) is the weight for the agricultural crop straw that pickup picks up.
Specific embodiment three illustrates present embodiment in conjunction with FIG. 1 to FIG. 4, is used for baler described in present embodiment
On-line weighting system is realized using the technology of embodiment one, two.
On-line weighting system for baler includes controller 4 and two weighing cells 3, and weighing cell 3 includes weighing
Sensor 3-1 and velocity sensor 3-2, the information that controller 4 acquires sensor in real time are handled, and realize online weighing；
The controller 4 includes PLC, booster power, pressure transmission device, AUTOMOTIVE RELAY KA1, AUTOMOTIVE RELAY KA2, sound
Light crossing-signal and tail-gate hydraulic valve；
The input of booster power terminates 12V vehicle power supply, and the 24V power supply of booster power output is combined aural and visual alarm, tail-gate
Hydraulic valve, PLC, velocity sensor 3-2 and pressure transmission device provide working power；
The input terminal X0 of the instantaneous mass weight signal output end connection PLC of weighing sensor 3-1；
The instantaneous running speed signal of velocity sensor 3-2 passes through the current data of the port COM2 of pressure transmission device and PLC
Communication；
AUTOMOTIVE RELAY KA1 coil in parallel between the Y0 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA2 coil in parallel between the Y1 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA1 normally opened contact is connected in the current supply circuit that 24V power supply provides for tail-gate hydraulic valve；
AUTOMOTIVE RELAY KA2 normally opened contact is connected in the current supply circuit that 24V power supply provides for combined aural and visual alarm.
It further, further include touch screen, the 24V power supply that the working power of the touch screen is exported by booster power mentions
For the port COM3 of touch screen and PLC carry out data communication.
Vehicle power supply of the controller 4 using dragger 1 in present embodiment, the vehicle power supply output of general dragger 1
12V voltage, the controller 4 in present embodiment use PLC, therefore, 12V voltage are risen to 24V as working power, is subsequent
Combined aural and visual alarm, tail-gate hydraulic valve, PLC, velocity sensor 3-2, touch screen and pressure transmission device working power is provided；Specifically
Circuit connecting relation it is as shown in Figure 4.Booster power inputs positive terminal and passes through No. three terminal phases of fuse and tractor key door
Even；The 24V terminal of PLC is connected with booster power output end 24V, and COM terminal is connected with the end COM of booster power output end, C0
Terminal and S/S parallel connection are connected with booster power output end 24V；The power end 24V terminal and booster power output end 24V of touch screen
It is connected, the COM terminal of touch screen is connected with the end booster power output end COM, No. 1 pin of signal end of touch screen and PLC's
COM3D+ terminal is connected, and No. 6 pins of signal end of touch screen are connected with the COM3D- terminal of PLC；The power end of pressure transmitter
24V terminal is connected with booster power output end 24V, and the COM terminal of pressure transmitter is connected with the end booster power output end COM,
The signal end D+ pin of pressure transmitter is connected with the COM2D+ terminal of PLC, the signal end D- pin and PLC of pressure transmitter
COM2D- terminal be connected, weighing sensor end is connected with pressure sensor；The both ends of KA1 relay coil are separately connected PLC
Y0 terminal and the end COM, the both ends of KA2 relay coil be separately connected Y1 terminal and the end COM of PLC, the normally opened main contacts of KM1
It goes here and there in booster power output end with tail-gate hydraulic valve in circuit, velocity sensor anode and cathode are defeated with booster power respectively
Outlet 24V is connected with the end COM, and A pin is connected with the end COM of booster power output end, the X0 terminal of B pin and PLC input terminal
It is connected；The normally opened main contacts string of KA2 is in booster power output end and combined aural and visual alarm in circuit.
Working principle：
The speed signal of velocity sensor 3-2 online real time collecting is sent to the X0 terminal of PLC；Weighing sensor 3-1 exists
The weight signal that line acquires in real time is sent to the C0 terminal of PLC by pressure transmitter, i.e. PLC acquire in real time weight, speed this
Two kinds of signals.When PLC thinks that the weight picked up is up to standard by calculating, high level is exported by Y1 terminal, KA2 coil is enabled to obtain
Electricity, normally opened main contacts closure, then combined aural and visual alarm works, and the current stalk of sounding reminding machine hand can carry out bundling and operate,
Issued and reminded to touch screen by the port COM3 simultaneously, machine hand visually receives prompting message, machine hand receive acousto-optic,
Stop dragger 1 after visual alerts to move ahead, while whether the speed for detecting pickup is returned to zero, if the Y0 terminal of zero, PLC
It issues high level signal control KA1 coil and obtains electric, normally opened main contacts closure enables tail-gate hydraulic valve work, and door is opened, beats
Bale is fallen from door after bundle.
Specific embodiment four illustrates present embodiment in conjunction with FIG. 1 to FIG. 5, and banking arrangement described in present embodiment is benefit
It is realized described in embodiment three for the on-line weighting system of baler.
Step 1: initialization：The weight of PLC acquisition is reset, and default bundling weight WT；
Default bundling weight can be realized by selection Weight Model.
Step 2: dragger 1 drives baler 2 to advance, and the pickup of baler 2 is enabled to start work；
Step 3: PLC acquires the two paths of signals that two weighing cells 3 are passed back in real time, every road signal includes weighing and sensing
The pickup that device 3-1 the is measured material that instantaneous mass weight signal in length and velocity sensor 3-2 are measured of effectively weighing exists
The instantaneous speed of service on pickup；
Step 4: pressing formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2(t) it is respectively weighing sensor 3-1 in two weighing cells 3
The instantaneous mass weight effectively weighed in length in the pickup that moment t is measured；
Wherein v1(t)、v2It (t) is respectively that velocity sensor 3-2 in two weighing cells 3 is being picked up in the material that moment t is measured
Pick up the instantaneous speed of service on device；
Step 5: judging whether to meet condition W >=WT,
If result be it is yes, show that current bale weight is up to standard, execute step 6；If the result is negative, show current bale weight
Measure below standard, pickup works on, and returns to step three；
AUTOMOTIVE RELAY KA2 normally opened contact is allowed to be closed Step 6: PLC issues instruction, combined aural and visual alarm is that the sending of machine hand mentions
Show sound, machine hand enables dragger halt according to the prompt tone, pickup stops working；
Step 7: PLC sending enables AUTOMOTIVE RELAY KA1 normally opened contact be closed in the case where the speed of pickup is zero
Instruction, enable tail-gate hydraulic valve work once electrified open door, bale falls from door.
Working principle：
Dragger 1 starts, and electrical system powers on, and PLC passes weighing sensor and pressure transmitter back before starting every time
Weight is reset, and bale Weight Model is selected in machine picking；After Weight Model selection, i.e. the weight threshold W of baleTIt determines that.
Start bundling operation, when material passes through pickup, weighing sensor 3-1 generates one and is proportional to pickup load
Current signal is converted weight signal by current signal, pressure transmitter；Velocity sensor generates one by pickup wheel shaft 2-2
Series of pulses, the frequency of pulse are proportional to the speed signal of pickup speed, and the speed of pickup is obtained by these pulse signals
Degree；
PLC receives weight signal and speed signal calculates an instantaneous weight and carries out cumulative obtain by picking up implements
The total weight of material, the i.e. real-time weight of bale；
PLC obtains the dynamic realtime weight of bale and is sent to touch screen and shows to cumulative weight processing；
Weight threshold W corresponding to the Weight Model in step 1 will be reached when bale weightTWhen, PLC is sent out to touch screen
Bale weight will reach information out, and prompt machine hand halts；
After bale weight reaches weighting model, baler halts, and PLC detects whether pickup speed is zero, if
Zero issues unlatching door signal；
Weighing terminates, and bale is fallen, and baler moves on, and starts the bundling operation of next bale；
PLC calculates bale total weight, total quantity forms data form and is stored in touch screen.
Although disclosed herein embodiment it is as above, the content is only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. be used for baler online weight-measuring device, the baler includes pickup, the pickup include roller (2-1),
Pickup wheel shaft (2-2) and two pickup fixed frames (2-3)；
It is characterized in that, the device of the online check weighing includes two weighing cells (3), two weighing cells (3) are symmetrical arranged
At the both ends of pickup；
The weighing cell (3) includes weighing sensor (3-1) and velocity sensor (3-2), and weighing sensor (3-1) setting exists
On pickup wheel shaft (2-2) between roller (2-1) and pickup fixed frame (2-3), and rotates and connect with pickup wheel shaft (2-2)
It connects, be fixedly connected with pickup fixed frame (2-3)；Velocity sensor (3-2) is arranged in the outside of pickup fixed frame (2-3),
And with pickup wheel shaft (2-2) is coaxial couples, is fixedly connected with pickup fixed frame (2-3).
2. being used for the online weight-measuring device of baler according to claim 1, which is characterized in that weighing cell (3) further includes
Bearing (3-3) and bearing base (3-4), bearing (3-3) are arranged on pickup wheel shaft (2-2), and weighing sensor (3-1) is fixed
On bearing base (3-4), to realize the rotation connection of weighing sensor (3-1) Yu pickup wheel shaft (2-2).
3. being used for the online weight-measuring device of baler according to claim 2, which is characterized in that weighing cell (3) further includes L
The transverse slat of type fixed frame (3-5), L-type fixed frame (3-5) is fixedly connected with weighing sensor (3-1), L-type fixed frame (3-5)
Riser is fixedly connected with the inner sidewall of pickup fixed frame (2-3).
4. being used for the online weight-measuring device of baler according to claim 3, which is characterized in that weighing cell (3) further includes
Shaft coupling (3-6), the output shaft of velocity sensor (3-2) are realized with pickup wheel shaft (2-2) by shaft coupling (3-6) coaxial solid
Even.
5. being used for the online weight-measuring device of baler according to claim 4, which is characterized in that weighing cell (3) further includes U
Type fixed frame (3-7), velocity sensor (3-2) are fixed on the outside of pickup fixed frame (2-3) by U-shaped fixed frame (3-7)
On wall.
6. the online weight-measuring device of baler is used for described in any claim according to claim 1~5, which is characterized in that survey
Fast sensor (3-2) uses tachometer generator or speed measuring coder.
7. online method for measuring weight, this method is realized based on the online weight-measuring device for being used for baler described in claim 1,
It is characterized in that, this method is：
By formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2It (t) is respectively that weighing sensor (3-1) in two weighing cells (3) exists
The pickup that moment t is measured effectively is weighed the instantaneous mass weight in length；
Wherein v1(t)、v2It (t) is respectively that velocity sensor (3-2) in two weighing cells (3) exists in the material that moment t is measured
The instantaneous speed of service on pickup.
8. being used for the on-line weighting system of baler, which is characterized in that including controller (4) and two weighing cells (3), check weighing
Unit (3) includes weighing sensor (3-1) and velocity sensor (3-2), and the information that controller (4) acquires sensor in real time carries out
Online weighing is realized in processing；
The controller (4) includes PLC, booster power, pressure transmission device, AUTOMOTIVE RELAY KA1, AUTOMOTIVE RELAY KA2, acousto-optic
Alarm and tail-gate hydraulic valve；
The input of booster power terminates 12V vehicle power supply, and the 24V power supply of booster power output is combined aural and visual alarm, tail-gate is hydraulic
Valve, PLC, velocity sensor (3-2) and pressure transmission device provide working power；
The input terminal X0 of the instantaneous mass weight signal output end connection PLC of weighing sensor (3-1)；
The instantaneous running speed signal of velocity sensor (3-2) is logical by the current data of the port COM2 of pressure transmission device and PLC
News；
AUTOMOTIVE RELAY KA1 coil in parallel between the Y0 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA2 coil in parallel between the Y1 output terminal and public terminal COM of PLC；
AUTOMOTIVE RELAY KA1 normally opened contact is connected in the current supply circuit that 24V power supply provides for tail-gate hydraulic valve；
AUTOMOTIVE RELAY KA2 normally opened contact is connected in the current supply circuit that 24V power supply provides for combined aural and visual alarm.
9. the on-line weighting system according to claim 8 for baler, which is characterized in that it further include touch screen, institute
The working power for stating touch screen is provided by the 24V power supply that booster power exports, and it is logical that the port COM3 of touch screen and PLC carry out data
News.
10. bundling method, which is characterized in that this approach includes the following steps：
Step 1: initialization：The weight of PLC acquisition is reset, and default bundling weight WT；
Step 2: dragger drives baler to advance, and the pickup of baler is enabled to start work；
Step 3: PLC acquires the two paths of signals that two weighing cells (3) are passed back in real time, every road signal includes weighing sensor
The pickup that (3-1) is measured effectively is weighed the material that instantaneous mass weight signal in length and velocity sensor (3-2) measure
The instantaneous speed of service on pickup；
Step 4: pressing formula
Obtain the material cumulative weight W picked up within [0, the T] time by pickup；
Q (t)=q1(t)+q2(t), wherein q1(t)、q2It (t) is respectively that weighing sensor (3-1) in two weighing cells (3) exists
The pickup that moment t is measured effectively is weighed the instantaneous mass weight in length；
Wherein v1(t)、v2It (t) is respectively that velocity sensor (3-2) in two weighing cells (3) exists in the material that moment t is measured
The instantaneous speed of service on pickup；
Step 5: judging whether to meet condition W >=WT,
If result be it is yes, show that current bale weight is up to standard, execute step 6；If the result is negative, show current bale weight not
Up to standard, pickup works on, and returns to step three；
AUTOMOTIVE RELAY KA2 normally opened contact is allowed to be closed Step 6: PLC issues instruction, combined aural and visual alarm is that machine hand issues prompt tone,
Machine hand enables dragger halt according to the prompt tone, pickup stops working；
Step 7: PLC issues the finger for enabling AUTOMOTIVE RELAY KA1 normally opened contact be closed in the case where the speed of pickup is zero
It enables, tail-gate hydraulic valve work once electrified is enabled to open door, bale is fallen from door.
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| CN111272266A (en) * | 2020-02-10 | 2020-06-12 | 北京农业智能装备技术研究中心 | Square baler bale weight monitoring system and method |
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| CN108901379B (en) | 2021-06-01 |
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