CN104692082B - Weight measurement and screening method - Google Patents
Weight measurement and screening method Download PDFInfo
- Publication number
- CN104692082B CN104692082B CN201310663288.6A CN201310663288A CN104692082B CN 104692082 B CN104692082 B CN 104692082B CN 201310663288 A CN201310663288 A CN 201310663288A CN 104692082 B CN104692082 B CN 104692082B
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- China
- Prior art keywords
- conveyer belt
- screening plant
- check weighing
- hydraulic motor
- gravity
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
Abstract
The invention relates to a weight measurement and screening device and a weight measurement and screening method. The weight measurement and screening device comprises a conveying belt I (3') and a conveying belt II (4') that are arranged sequentially; a certain distance is kept between the conveying belt I (3') and the conveying belt II (4'); a screening device III (6') and a screening device IV (7') are arranged below the conveying belt II (4'); the conveying belt I (3') is connected with a hydraulic oil cylinder and is driven by a hydraulic motor (9'); and the conveying belt I (3') is connected with a displacement sensor. The weight of materials on the conveying belts can be measured by using working pressure of the hydraulic motor of the weight measurement device and height of the materials above the conveying belts, the distance between the conveying belt I (3') and the conveying belt II (4') is determined, and further extension of the conveying belt I (3') is controlled to adjust the weight of the materials entering different screening devices. The weight measurement and screening device and the weight measurement and screening method avoid material unbalance of the two screening devices, skylight operation time is saved, and a high efficiency screen cleaning task is guaranteed.
Description
Technical field
The present invention relates to a kind of check weighing feeding-distribution device, the weight of the conveyed material of particularly a kind of apron conveyor it is indirect
Measurement apparatus.
Background technology
Screen scarifier in the construction of railway public affair is a kind of for excavating the ballast aggregate under railway track sleeper, and then ballast aggregate is entered
Row screening, and the available ballast aggregate for screening out is backfilled under steel sleeper, while the discarded dirty soil for screening out is dished out one
Plant railway maintenance equipment.On of the prior art super-huge screen scarifier as shown in Figure 1, be typically provided with two sets it is aspectant
Screening plant, i.e. screening plant I 6 and screening plant II 7, the ballast aggregate material 2 to be sieved that steel tie bottom is dug out through conveyer belt 3,
M and n two-way is divided to dish out, the material on m roads enters screening plant I 6, and the material 5 on n roads enters screening plant II 7 through conveyer belt 4；
In order to give full play to the efficiency of screening plant, it is desirable to which the material m and n into two screening plants should be identical, but due to road conditions
Difference, from pillow bottom, the material 2 that digs out is a variable, in order to ensure into screening plant I 6 material m and enter screening dress
Put II 7 material n it is identical, make conveyer belt 3 elastic by manual control hydraulic jack 1 in current engineering, adjust conveyer belt 3
And relative position s between conveyer belt 4, it is identical with n into the material m of two screening plants so as to ensure that.However, manual control
Mode obviously have the disadvantage：First, error is larger, and then causes the work of two screening plants unbalanced；Second,
Environmental condition during screening is poor, and dust is larger, causes poor visibility, can produce often artificial incorrect operation, so can be further
Make the material into two screening plants unbalanced, cause the working performance of screening plant to deteriorate；3rd, more seriously,
As working environment is severe, such as dust, vibration etc. make operator easily tired, once at a certain moment, rest the head on bottom and excavate what is come
Material 2 is more, and operator can not adjust the stroke of flexible conveyer belt 3 again in time, will result in material 2 more, even
It is to fully enter a certain screening plant, has exceeded the sieving capacity of the screening plant, cause screening plant to quit work, produces stifled
Material, after now only shutting down, manually cleaning could continue operation, so, waste the operation Window time of preciousness, sternly
Ghost image rings being normally carried out for sorting operation.
In order to people is freed from heavy and poorly efficient harsh environments, it is necessary to develop a kind of energy according to from pillow
The difference of the weight of the material 2 that bottom is dug out, the stroke of manipulation conveyer belt 3, fills so as to automatically adjust into two screenings automatically
The inventory put, makes m ≈ n, and then ensures that screening operation is automatic, efficiently carries out.
The content of the invention
The present invention is improved for drawbacks described above, and to achieve these goals, a first aspect of the present invention provides one
Plant check weighing feeding-distribution device.
Check weighing feeding-distribution device according to first aspect present invention includes conveyer belt I and conveyer belt II, the conveyer belt I and conveying
Band II sets gradually, and has certain spacing, be provided with III He of screening plant below the conveyer belt II between conveyer belt I and conveyer belt II
Screening plant IV, the connection hydraulic jack of the conveyer belt I, by fluid motor-driven, the conveyer belt I connects the conveyer belt I
Displacement transducer, the displacement transducer detect the displacement of the conveyer belt I.
Preferably, the hydraulic motor connects pressure transducer, and the pressure transducer is used for detecting the drive of hydraulic motor
Dynamic pressure, and then the weight of material on conveyer belt I is calculated, when, on the circuit in upward slope or descending, driving pressure can be according to the gradient
An amendment is done, so that the pressure approximately reflects the number of the conveyed material of conveyer belt.
Preferably, the pressure transducer is connected with PID regulator, and the PID regulator is according to the pressure transducer
The signal of input, according to certain mathematical model, carries out ratio to input quantity（P）, integration (I), differential (D) calculate after export one
Individual control signal is adjusted to actuator, to reach expected result.
Preferably, the conveyer belt I includes sprocket wheel, is embedded in conduction chain on the outside of the sprocket wheel.
It is further preferred that the conveyer belt I includes two groups of sprocket wheels, conduction chain, two groups of chains on the outside of every group of sprocket wheel, are all embedded in
Connected by transverse connecting rod between the conduction chain in wheel outside, balata belt, the balata belt are housed in the transverse connecting rod
For conveying material.
It is further preferred that every group of sprocket wheel of the conveyer belt I includes at least two sprocket wheels, the sprocket wheel includes tooth, in order to
The conduction chain is engaged and is driven.
It is further preferred that the balata belt rivet clasp is in the transverse connecting rod, with ensure the balata belt with it is described
The displacement of transverse connecting rod is consistent.
Preferably, the conveyer belt II is identical with the structure of the conveyer belt I.
It is further preferred that the conveyer belt I is obliquely installed.
It is further preferred that the conveyer belt I is 0～30 ° with the angle of railway ballast place plane.
A kind of working method of check weighing feeding-distribution device of first aspect present invention is：The material of conveyer belt I is delivered into
Screening plant III, after a certain amount of material is contained in the screening plant III, pressure transducer output signal is simultaneously adjusted by PID
Device controls hydraulic jack elongated distance s, and conveyer belt I under the drive of hydraulic jack is moved forward and sends into material thereon
Conveyer belt II, conveyer belt II are constantly conveyed, and material thereon is delivered into screening plant IV, when to into screening plant IV
Material advance into therewith the screening plant III weight of material it is suitable when, pressure transducer output signal Jing PID regulators
Hydraulic jack being controlled after regulation and reducing the distance s, conveyer belt I is separated with conveyer belt II, and the material on conveyer belt I enters screening plant
III, after above-mentioned a certain amount of material is increased again in the screening plant III, PID regulator control hydraulic jack extends again,
Material is sent into into the conveyer belt II, said process repeats, stretched by the flexible driving conveying belt I of hydraulic jack, so as to
Ensure that the material in the screening plant III and screening plant IV is suitable, and then ensure screening plant normal operation, when in upward slope
Or on the circuit of descending, driving pressure can do an amendment according to the gradient, so that the pressure approximately reflects the conveyed thing of conveyer belt
Material number.
A kind of check weighing feeding-distribution device of first aspect present invention can be applicable to conveyor device, facilitate conveyer metering conveying
The check weighing feeding-distribution device, preferably to distribute, to process material, is applied to the conveying dress of railway screen scarifier by the weight of material
Put, then can measure the inventory into different screen cleaning devices respectively, evenly distribute material, make cleaning machine operation more reasonable, high
Effect.
Check weighing feeding-distribution device of the present invention can avoid the material of two screening plants unbalanced, it is to avoid screening plant is blocked up
Material, shut-down, its control are accurate, save the skylight activity duration, it is ensured that sorting operation is normally carried out, and raises labour efficiency, and reduce ferrum
Staff is also freed from uninteresting, heavy physical work, for raising by road line maintenance, maintenance cost in addition
Hand labor environment has positive meaning.
The technical scheme of the check weighing feeding-distribution device provided by first aspect present invention includes the combination in any of each part mentioned above,
The simple change of each part mentioned above component or combination are still protection scope of the present invention.
Second aspect present invention provides a kind of check weighing distribution method, and which includes：
a2. the height of materials H on measurement conveyer belt I2；
b2. measurement material transporting velocity V2；
c2. the gravity in the unit interval suffered by material is G2, G2= v×ρ×g=V2×t×H2×B2× ρ × g, in formula, v
For the volume of material, ρ is material density, and g is acceleration of gravity, V2For material transporting velocity, t is material time of delivery, H2For thing
Material height, B2For material width；
d2. B during operation2Depending on the width of conveyer belt I, it is definite value, material density ρ is also definite value, gravity acceleration g is
Known constant, transporting velocity V2, it is known that therefore, according to measuring time t and height of materials H2The gravity of material can be calculated, is entered
And extrapolate the quality of material m on conveyer belt I2；
e2. the material on conveyer belt I is first sent into into screening plant III, in material conveying process, H2It is input into the value of t
PID regulator, PID regulator calculate the quality of material of the conveying of conveyer belt I and reach m2ⅢDuring=M, PID regulator control hydraulic pressure
Oil cylinder extends, and makes conveyer belt I and II contact of conveyer belt；
f2. the material on conveyer belt I enters conveyer belt II, and enters screening plant IV via conveyer belt II, when PID is adjusted
Section device calculates the quality of material of the input screening plant IV of conveyer belt II and reaches m2ⅣDuring=M, PID regulator control hydraulic jack
Retract, and then conveyer belt I is separated with conveyer belt II；
g2. the material on conveyer belt I enters screening plant III, when quality m that the material for sending into screening plant III increases2Ⅲ=
During M, conveyer belt I is contacted with conveyer belt II again, and material is delivered to screening plant IV；
h2. quality m that the material in screening plant IV increases2ⅣDuring=M, conveyer belt I is separated with conveyer belt II again, material
It is delivered in screening plant III.
Preferably, step a2To step d2Carry out successively.
Preferably, step e2To step h2Circulation is carried out.
Preferably, step e2To step h2Cycle-index according to workload determine.
Preferably, the conveyer belt I includes side wall, material bottom and top, middle part on the conveyer belt I and arbitrarily
The width B of cross section2It is equal.
Preferably, a in step2To step h2Conveyer belt I of the conveyer belt I for first aspect present invention.
Preferably, a in step2To step h2Conveyer belt II of the conveyer belt II for first aspect present invention.
Preferably, a in step2To step h2Screening plant III of the screening plant III for first aspect present invention.
Preferably, a in step2To step h2Screening plant IV of the screening plant IV for first aspect present invention.
The metering method of the conveying material that second aspect present invention is provided is solved simply, after conveyer belt I sets, and which is wide
Degree B2For certain value, by measuring the gravity that the height of material can determine that conveyed material is subject to, the Metrology Division so as to by
The weight of conveyed material, convenient and swift, efficiency high.
The technical scheme of the metering method of the conveying material that second aspect present invention is provided includes any of each part mentioned above
Combination, the simple change of each part mentioned above component or combination are still protection scope of the present invention.
A third aspect of the present invention also provides a kind of check weighing distribution method, and which includes：
a3. the driving power of the hydraulic motor being connected with conveyer belt I is W1=Q × p, in formula：Flows of the Q for hydraulic motor,
Operating pressures of the p for hydraulic motor；
b3. the earth attraction that the material on conveyer belt I is subject to produces gravity G1, the folder of conveyer belt I and railway roadbed place horizontal plane
Angle is α, 0 °≤α≤30 °, gravity G1It is F=G along the component of conveyer belt I1×sinα；
c3. conveyer belt I produces frictional force T to the material on its upper surface, and frictional force T should be not less than material gravity
Along the component F in I direction of conveyer belt, and component of frictional force T with gravity along I direction of conveyer belt is in opposite direction, T=f × G1×
cosα；
d3. during I operation of conveyer belt, make gravity be G1Material with speed V1The uniform motion on conveyer belt I, now conveys
The power needed with I part for being located at sprocket wheel bottom should be not less than material gravity G1Along component F and frictional force T of belt direction
Numerical value sum, i.e. the power W2=power × speed of conveyer belt I=(F+T) V1；
e3. by conservation of energy principle, have：W1=W2, i.e.,：Q×p=(F+T)V1, further derive and can obtain：P=(F+T) V1/
Q= (G1×sinα+f×G1×cosα)V1/Q=G1(sinα+f×cosα)V1/Q；
f3. in angle α, material transporting velocity V1, hydraulic motor flow Q, coefficient of friction f determine in the case of, hydraulic pressure
The size of motor operations pressure p, is decided by the gravity G of material1Size, therefore by detect hydraulic motor operating pressure p,
Gravity G that conveying material be subject to is measured indirectly can1, so that it is determined that quality m of the material conveyed on conveyer belt I1；
g3. the material on conveyer belt I is first sent into into screening plant III, in material conveying process, pressure transducer is by liquid
The operating pressure p signal output of pressure motor to PID regulator, when operating pressure p of hydraulic motor reach it is defeated corresponding to conveyer belt I
The quality of material m for sending1ⅢValue reach m1ⅢDuring=M, the control hydraulic jack elongation of PID regulator output signal, and make conveyer belt I
Contact with conveyer belt II；
h3. the material on conveyer belt I enters conveyer belt II, and enters screening plant IV via conveyer belt II, and pressure continues
The operating pressure p signal output of hydraulic motor to PID regulator is entered by sensor when operating pressure p of hydraulic motor is corresponding
Quality m of the material of screening plant IV1ⅣDuring=M, PID regulator control hydraulic jack is retracted, and then makes conveyer belt I with conveying
Band II is separated；
j3. the material on conveyer belt I enters screening plant III, when the quality of the material for sending into screening plant III increases again
Plus m1ⅢDuring=M, conveyer belt I is contacted with conveyer belt II again, and material is delivered to screening plant IV；
k3. quality m that the material in screening plant IV increases1ⅣDuring=M, conveyer belt I is separated with conveyer belt II again, material
It is delivered in screening plant III.
Preferably, step a3To step f3Carry out successively.
Preferably, step g3To step k3Circulation is carried out.
Preferably, step g3To step k3Cycle-index according to workload determine.
Preferably, a in step3To step k3Described in conveyer belt I for first aspect present invention conveyer belt I.
Preferably, a in step3To step k3Conveyer belt II of the conveyer belt II for first aspect present invention.
Preferably, a in step3To step k3Screening plant III of the screening plant III for first aspect present invention.
Preferably, a in step3To step k3Screening plant IV of the screening plant IV for first aspect present invention.
Preferably, the conveyer belt I includes sprocket wheel, is embedded in conduction chain on the sprocket wheel.
It is further preferred that the conveyer belt I includes two groups of sprocket wheels, conduction chain, two groups of sprocket wheels on every group of sprocket wheel, are all embedded in
On conduction chain between connected by transverse connecting rod, balata belt is housed in the transverse connecting rod, the balata belt is used for
Conveying material.
It is further preferred that every group of sprocket wheel of the conveyer belt I includes at least two sprocket wheels, the sprocket wheel includes tooth, in order to
The conduction chain is engaged and is driven.
It is further preferred that the balata belt rivet clasp is in the transverse connecting rod, with ensure the balata belt with it is described
The displacement of transverse connecting rod is consistent.
The metering method of the conveying material that third aspect present invention is provided is solved simply, and after conveyer belt I sets, which rubs
Wipe coefficient f, angle α and be to determine value, when material transporting velocity V1, hydraulic motor flow Q also one timing, by hydraulic motor
Operating pressure can determine that the gravity that conveyed material is subject to, so as to measure the weight that place conveys material, convenient fast
Victory, efficiency high.
Third aspect present invention provide conveying material metering method, technical scheme include any of each part mentioned above
Combination, the simple change of each part mentioned above component or combination are still protection scope of the present invention.
Description of the drawings
Fig. 1 is the conveyer belt and screening plant structure and schematic layout pattern of screen scarifier in prior art.
Fig. 2 is the structural representation of a preferred embodiment of the check weighing feeding-distribution device described in first aspect present invention.
Structural representations of the Fig. 3 for the conduction chain of embodiment illustrated in fig. 2.
Computing Principle schematic diagrams of the Fig. 4 for check weighing distribution method described in second aspect present invention.
Fig. 5 illustrates for the conduction chain structural representation and Computing Principle of check weighing distribution method described in third aspect present invention
Figure, i.e. a preferred embodiment of the check weighing distribution method of embodiment illustrated in fig. 2.
In Fig. 1-Fig. 5, numeral is represented respectively：
1 oil cylinder, 2 material
3 conveyer belt, 4 conveyer belt
5 material, 6 screening plant I
7 II 2 ' materials of screening plant
3 ' I 4 ' conveyer belts of conveyer belt II
5 ' material, 6 ' screening plant III
7 ' IV 8 ' sprocket wheels of screening plant
9 ' hydraulic motor, 10 ' conduction chain
11 ' transverse connecting rod, 2 material
3 conveyer belt, I 8 sprocket wheel
9 hydraulic motors.
Specific embodiment
For a better understanding of the present invention, describe the check weighing according to first aspect present invention below in conjunction with the accompanying drawings respectively in detail
The preferred embodiment of feeding-distribution device and the check weighing distribution method according to second aspect present invention and the third aspect.
Embodiment 1.1：Fig. 2 is that the structure of a preferred embodiment of the check weighing feeding-distribution device described in first aspect present invention is shown
It is intended to, the structural representation of the conduction chain of Fig. 3 embodiment illustrated in fig. 2, Fig. 4 show check weighing feeding-distribution device shown in Fig. 2 and Fig. 3
Conduction chain and chain sprocket structure, in the present embodiment, check weighing feeding-distribution device include conveyer belt I 3 ' and conveyer belt II 4 ', conveying
Band I 3 ' and conveyer belt II 4 ' set gradually, conveyer belt I 3 ' and conveyer belt II 4 ' between spacing be s ', II 4 ' lower section of conveyer belt
Be provided with screening plant III 6 ' and screening plant IV 7 ', conveyer belt I 3 ' connection hydraulic jack, conveyer belt I 3 ' by hydraulic motor 9 '
Drive, the conveyer belt I 3 ' connection displacement transducer, displacement transducer detection conveyer belt I 3 ' displacement.
In the present embodiment, the connection pressure transducer of hydraulic motor 9 ', the pressure transducer are used for detecting hydraulic motor 9 '
Driving pressure, so calculate conveyer belt I 3 ' on material 2 ' weight.
In the present embodiment, the pressure transducer is connected with PID regulator, and the PID regulator is input into according to sensor
Input signal, carries out ratio according to mathematical model to input quantity（P）, integration (I), differential (D) calculate after output control signal pair
Actuator is adjusted, to reach expected resultss.
In the present embodiment preferably, conveyer belt I 3 ' include two groups of sprocket wheels 8 ', is all embedded in conduction chain on every group of sprocket wheel 8 '
10 ', connected by transverse connecting rod 11 ' between the conduction chain 10 ' on two groups of sprocket wheels 8 ', transverse connecting rod 11 ' is above equipped with rubber
Rubber belt, the balata belt are used for conveying material 2 '.
In the present embodiment preferably, conveyer belt I 3 ' every group of sprocket wheel include six sprocket wheels 8 ', the sprocket wheel 8 ' includes tooth,
To engage and be driven with the conduction chain 10 '.
In the present embodiment, the hydraulic jack and hydraulic motor 9 ' are actuator, the hydraulic jack and hydraulic pressure horse
Up to 9 ' by hydraulic pump drive, the hydraulic jack carries out linearly operating；9 ' spinning movement of hydraulic motor, hydraulic motor 9 ' drive
Conveyer belt I 3 ' two groups of sprocket wheels 8 ' rotate, so as to transport conveyer belt I 3 ' on material；The hydraulic jack is in driving conveying belt I
3 ' it is overall be moved forward or rearward, so as to its closer or far from conveyer belt II 4 '.
In the present embodiment, conveyer belt II 4 ' with conveyer belt I 3 ' structure it is identical.
In the present embodiment preferably, angle α=30 ° of conveyer belt I 3 ' and railway ballast place plane.
Embodiment 1.2：A kind of check weighing feeding-distribution device, with embodiment 1.1, except that, the balata belt rivet clasp exists
In the transverse connecting rod, to ensure that the balata belt is consistent with the displacement of the transverse connecting rod.
Embodiment 1.3：A kind of check weighing feeding-distribution device, with embodiment 1.2, except that, every group of chain of the conveyer belt I
Wheel includes eight sprocket wheels.
Embodiment 1.4：A kind of check weighing feeding-distribution device, with embodiment 1.2, except that, every group of chain of the conveyer belt I
Wheel includes nine sprocket wheels.
Embodiment 1.5：A kind of check weighing feeding-distribution device, with embodiment 1.2, except that, the conveyer belt I and railway road
Angle α=20 ° of bed place plane.
A kind of working method of the check weighing feeding-distribution device in above-described embodiment is：By conveyer belt I 3 ' material 2 ' convey into
Enter screening plant III 6 ', when the screening plant III 6 ' in containing a certain amount of material 2 ' after, pressure transducer output signal is simultaneously led to
Cross PID regulator control hydraulic jack elongated distance s ', pressure transducer output signal and conveyer belt I 3 ' displacement form one
Individual closed loop control, i.e.,：Pressure transducer output signal is different then correspond to different conveyer belt I 3 ' displacement.Conveyer belt I 3 '
Under the drive of hydraulic jack, move forward and by material 2 ' thereon send into conveyer belt II 4 ', conveyer belt II 4 ' constantly roll enters
Enter conveyer belt II 4 ' material 5 ' amount n ' all deliver into screening plant IV 7 ', when to into screening plant IV 7 ' material
5 ' weight p ' advance into therewith screening plant III 6 ' 2 ' weight m ' of material it is equal when, pressure transducer output signal simultaneously passes through
PID regulator control hydraulic jack reduces the distance s ', conveyer belt I 3 ' with conveyer belt II 4 ' separate, conveyer belt I 3 ' on material 2 '
Into screening plant III 6 ', when screening plant III 6 ' in the amount of material 2 ' that increases again reach m ' when, pressure sensor signal
Jing PID regulators control hydraulic jack extends again, by material 2 ' send into the conveyer belt II 4 ', said process repeats,
By the flexible driving conveying belt of hydraulic jack I 3 ' flexible, so as to ensure the material of screening plant III 6 ' and screening plant IV 7 ' interior
Quite, so ensure screening plant normal operation.
More multioperation is all known for those of ordinary skills, is repeated no more.
Check weighing feeding-distribution device in above-described embodiment can avoid the material of two screening plants unbalanced, it is to avoid screening plant
Putty, shut-down, its control are accurate, save the skylight activity duration, it is ensured that sorting operation is normally carried out, and raises labour efficiency, and reduce
Staff is also freed from uninteresting, heavy physical work by railway line maintenance, maintenance cost in addition, for carrying
High hand labor environment has positive meaning.
The technical scheme of the check weighing feeding-distribution device provided by embodiment 1.1 to embodiment 1.5 includes appointing for each part mentioned above
Meaning combination, the simple change of each part mentioned above component or combination are still the protection domain of the present embodiment.
Embodiment 2.1：Computing Principle schematic diagrams of the Fig. 4 for check weighing distribution method described in second aspect present invention, this enforcement
A kind of check weighing distribution method is provided in example, which includes：
a2. the height H of the material 2 on measurement conveyer belt I 32；
b2. transporting velocity V of measurement material 22；
c2. the gravity in the unit interval suffered by material is G2, G2= v×ρ×g=V2×t×H2×B2× ρ × g, in formula, v
For the volume of material, ρ is material density, and g is acceleration of gravity, V2For material transporting velocity, t is material time of delivery, H2For thing
Material height, B2For material width；
d2. B during operation2Depending on the width of conveyer belt I 3, it is definite value, the density p of material 2 is also definite value, gravity accelerates
Degree g be known constant, transporting velocity V2, it is known that therefore, according to measuring time t and height of materials H2The weight of material can be calculated
Power, and then extrapolate the quality of material m on conveyer belt I2；
e2. the material on conveyer belt I 3 is first sent into into screening plant III, in 2 course of conveying of material, H2It is defeated with the value of t
Enter PID regulator, PID regulator calculates the quality of material of the conveying of conveyer belt I 3 and reaches m2ⅢDuring=M, PID regulator control
The hydraulic jack elongation of I 3 connections, and make conveyer belt I and II contact of conveyer belt；
f2. the material on conveyer belt I 3 enters conveyer belt II, and enters screening plant IV via conveyer belt II, works as PID
Actuator calculates the quality of material of the input screening plant IV of conveyer belt II and reaches m2ⅣDuring=M, PID regulator control hydraulic oil
Cylinder is retracted, and then conveyer belt I is separated with conveyer belt II；
g2. the material on conveyer belt I is again introduced into screening plant III, when the matter that the material for sending into screening plant III increases
Amount m2ⅢDuring=M, conveyer belt I is contacted with conveyer belt II again, and material 2 is delivered to screening plant IV；
h2. quality m that the material in screening plant IV increases2ⅣDuring=M, conveyer belt I is separated with conveyer belt II again, material
2 are delivered in screening plant III.
In the present embodiment, the conveyer belt I includes side wall, material bottom and top, middle part on the conveyer belt I and appoints
The width B of meaning cross section2It is equal.
In the present embodiment, step a2To step d2Carry out successively.
In the present embodiment, step e2To step h2Circulation is carried out.
In the present embodiment, a in step2To step h2The conveyer belt I 3 is described in embodiment 1.1 to embodiment 1.5
Conveyer belt I.
In the present embodiment, a in step2To step h2The conveyer belt II is defeated described in embodiment 1.1 to embodiment 1.5
Send band II.
In the present embodiment, a in step2To step h2The screening plant III is described in embodiment 1.1 to embodiment 1.5
Screening plant III.
In the present embodiment, a in step2To step h2The screening plant IV is described in embodiment 1.1 to embodiment 1.5
Screening plant IV.
In the present embodiment, a in step2To step h2The conveyer belt I 3 is connected with hydraulic motor 9, and by hydraulic motor
9 drive.
In the present embodiment, setting-in sprocket wheel 8 in conveyer belt I 3.
Embodiment 2.2：A kind of check weighing distribution method, with embodiment 3.1, except that：Step e2To step h2Follow
Ring number of times is determined according to workload.
The metering method of the conveying material that embodiment 2.1-2.2 is provided is solved simply, after conveyer belt I sets, and which is wide
Degree B2For certain value, by measuring the gravity that the height of material can determine that conveyed material is subject to, the Metrology Division so as to by
The weight of conveyed material, convenient and swift, efficiency high.
Embodiment 2.1-2.2 provide conveying material metering method, technical scheme include any of each part mentioned above
Combination, the simple change of each part mentioned above component or combination are still protection scope of the present invention.
Embodiment 3.1：Conduction chain structural representation and meter of the Fig. 5 for check weighing distribution method described in third aspect present invention
Principle schematic is calculated, in the present embodiment, a kind of check weighing distribution method includes：
a3. the driving power of hydraulic motor is W1=Q × p, in formula：Flows of the Q for hydraulic motor, works of the p for hydraulic motor
Make pressure；
b3. the earth attraction that the material on conveyer belt I is subject to produces gravity G1, the folder of conveyer belt I and railway roadbed place horizontal plane
Angle is α, 0 °≤α≤30 °, gravity G1It is F=G along the component of conveyer belt I1×sinα；
c3. conveyer belt I 3 ' produce frictional force T to the material on its upper surface, frictional force T should be not less than material weight
Component F of the power along I 3 ' direction of conveyer belt, and component of frictional force T with gravity along I 3 ' direction of conveyer belt is in opposite direction, T=f
×G1×cosα；
d3. during I 3 ' operation of conveyer belt, make gravity be G1Material with speed V1Conveyer belt I 3 ' on uniform motion, now
The power that the part of conveyer belt I 3 ' be located at sprocket wheel bottom needs should be not less than 2 ' gravity G of material1Along the component F of belt direction
With the numerical value sum of frictional force T, i.e. conveyer belt I 3 ' power W2=power × speed=(F+T) V1；
e3. by conservation of energy principle, have：W1=W2, i.e.,：Q×p=(F+T)V1, further derive and can obtain：P=(F+T) V1/
Q= (G1×sinα+f×G1×cosα)V1/Q=G1(sinα+f×cosα)V1/Q；
f3. in angle α, 2 ' transporting velocity V of material1, hydraulic motor flow Q, coefficient of friction f determine in the case of, liquid
The size of pressure motor operating pressure p, is decided by the gravity G of material1Size, therefore by detect hydraulic motor operating pressure
P, you can measure indirectly the gravity G that conveying material is subject to1, so that it is determined that the quality of the material 2 ' of I 3 ' upper conveying of conveyer belt
m1；
g3. by conveyer belt I 3 ' on material 2 ' first send into screening plant III, in 2 ' course of conveying of material, pressure sensing
Device signal output to PID regulator, when operating pressure p of hydraulic motor reaches the 2 ' matter of material corresponding to I 3 ' conveying of conveyer belt
Amount m1ⅢValue reach m1ⅢDuring=M, the control hydraulic jack elongation of PID regulator output signal, and make conveyer belt I 3 ' and conveyer belt
II 4 ' contact；
h3. conveyer belt I 3 ' on material 2 ' enter conveyer belt II 4 ', and via conveyer belt II 4 ' enter screening plant IV
7 ', pressure continues sensor and exports operating pressure p of hydraulic motor 9 ' to PID regulator, when the work pressure of hydraulic motor 9 '
Power p correspondence into screening plant IV 7 ' material quality m1ⅣDuring=M, PID regulator control hydraulic jack is retracted, and then makes
Conveyer belt I 3 ' with conveyer belt II 4 ' separate；
j3. conveyer belt I 3 ' on material 2 ' enter screening plant III 6 ', when be fed again into screening plant III 6 ' material
Quality m1ⅢDuring=M, conveyer belt I 3 ' again and conveyer belt II 4 ' contact, by material 2 ' be delivered to screening plant IV 7 '；
k3. screening plant IV 7 ' in increased quality m of material 5 '1ⅣDuring=M, conveyer belt I 3 ' again and conveyer belt II 4 '
Separate, material 2 ' be delivered to screening plant III 6 ' in.
In the present embodiment, step a3To step f3Carry out successively.
In the present embodiment preferably, step g3To step k3Circulation is carried out.
In the present embodiment, a in step3To step k3Described in conveyer belt I be embodiment 1.1-1.5
Described conveyer belt I.
In the present embodiment, a in step3To step k3The conveyer belt II is the conveyer belt II described in embodiment 1.1-1.5.
In the present embodiment, a in step3To step k3The screening plant III is the screening dress described in embodiment 1.1-1.5
Put III.
In the present embodiment, a in step3To step k3The screening plant IV is screening plant described in embodiment 1.1-1.5
Ⅳ。
In the present embodiment, the conveyer belt I includes sprocket wheel, is embedded in conduction chain on the sprocket wheel.
In the present embodiment preferably, the conveyer belt I includes two groups of sprocket wheels, is all embedded in conduction chain on every group of sprocket wheel,
Connected by transverse connecting rod between conduction chain on two groups of sprocket wheels, balata belt, the rubber are housed in the transverse connecting rod
Belt is used for conveying material.
In the present embodiment, every group of sprocket wheel of the conveyer belt I includes at least two sprocket wheels, and the sprocket wheel includes tooth, in order to
The conduction chain is engaged and is driven.
In the present embodiment, the balata belt rivet clasp in the transverse connecting rod, with ensure the balata belt with it is described
The displacement of transverse connecting rod is consistent.
Embodiment 3.2：A kind of check weighing distribution method, with embodiment 2.1, except that, step g3To step k3Follow
Ring number of times is determined according to workload.
The metering method of the conveying material that embodiment 3.1-3.2 is provided is solved simply, and after conveyer belt I sets, which rubs
Wipe coefficient f, angle α and be to determine value, when material transporting velocity V1, hydraulic motor flow Q also one timing, by hydraulic motor
Operating pressure can determine that the gravity that conveyed material is subject to, so as to measure the weight that place conveys material, convenient fast
Victory, efficiency high.
Embodiment 3.1-3.2 provide conveying material metering method, technical scheme include any of each part mentioned above
Combination, the simple change of each part mentioned above component or combination are still protection scope of the present invention.
Claims (17)
1. a kind of check weighing distribution method, which includes：
a2. the height H of the material (2) on measurement conveyer belt I (3)2；
b2. transporting velocity V of measurement material (2)2；
c2. the gravity in the unit interval suffered by material (2) is G2, G2= v×ρ×g=V2×t×H2×B2× ρ × g, in formula, v
For the volume of material (2), density of the ρ for material (2), g is acceleration of gravity, V2For the transporting velocity of material (2), t is thing
The time of delivery of material (2), H2For height of materials, B2For the width of material (2)；
d2. B during operation2Depending on the width of conveyer belt I (3), it is definite value, material (2) density p is also definite value, acceleration of gravity
G be known constant, transporting velocity V2, it is known that therefore, according to the height H for measuring time t and material (2)2Material can be calculated
(2) gravity, and then extrapolate quality m of material (2) on conveyer belt I (3)2；
e2. the material (2) on conveyer belt I (3) is first sent into screening plant III, in material (2) course of conveying, H2With t's
Value input PID regulator, PID regulator calculate material (2) quality of the conveying of conveyer belt I and reach m2ⅢDuring=M, PID is adjusted
Device control hydraulic jack elongation, and make conveyer belt I and II contact of conveyer belt；
f2. the material on conveyer belt I (3) enters conveyer belt II, and enters screening plant IV via conveyer belt II, when PID is adjusted
Device calculates material (2) quality of the input screening plant IV of conveyer belt II and reaches m2ⅣDuring=M, PID regulator control hydraulic oil
Cylinder is retracted, and then conveyer belt I is separated with conveyer belt II；
g2. the material on conveyer belt I (3) enters screening plant III, when the quality that the material (2) for sending into screening plant III increases
m2ⅢDuring=M, conveyer belt I (3) is contacted with conveyer belt II again, and material is delivered to screening plant IV；
h2. quality m that the material in screening plant IV increases2ⅣDuring=M, conveyer belt I (3) is separated with conveyer belt II again, material
It is delivered in screening plant III；
It is characterized in that：Step a2To step d2Carry out successively.
2. check weighing distribution method as claimed in claim 1, it is characterised in that：Step e2To step h2Circulation is carried out.
3. check weighing distribution method as claimed in claim 2, it is characterised in that：Step e2To step h2Cycle-index according to work
Industry amount determines.
4. check weighing distribution method as claimed in claim 3, it is characterised in that：The conveyer belt I (3) includes side wall, described defeated
Send the width B with the material bottom on I (3) and top, middle part and arbitrary cross section2It is equal.
5. check weighing distribution method as claimed in claim 4, it is characterised in that：A in step2To step h2The conveyer belt I is
A kind of corresponding component of check weighing feeding-distribution device, the check weighing feeding-distribution device include the conveyer belt I (3 ') for setting gradually and conveyer belt II
(4 '), have certain spacing, are provided with screening plant III below conveyer belt II (4 ') between conveyer belt I (3 ') and conveyer belt II (4 ')
(6 ') and screening plant IV (7 '), conveyer belt I (3 ') connection hydraulic jack, the hydraulic jack are driven by hydraulic motor (9 '),
Conveyer belt I (3 ') connects displacement transducer.
6. a kind of check weighing distribution method, which includes：
a3. the driving power of the hydraulic motor being connected with conveyer belt I is W1=Q × p, in formula：Flows of the Q for hydraulic motor, p is
The operating pressure of hydraulic motor；
b3. the earth attraction that the material on conveyer belt I (3 ') is subject to produces gravity G1, conveyer belt I (3 ') and railway roadbed place horizontal plane
Angle be α, 0 °≤α≤30 °, gravity G1It is F=G along the component of conveyer belt I (3 ')1×sinα；
c3. conveyer belt I (3 ') produces frictional force T to the material on its upper surface, and frictional force T should be not less than material gravity edge
The component F in conveyer belt I (3 ') direction, and component of frictional force T with gravity along conveyer belt I (3 ') direction is in opposite direction, T=f
×G1×cosα；
d3. during conveyer belt I (3 ') operation, make gravity be G1Material with speed V1The uniform motion on conveyer belt I (3 '), now
The power that conveyer belt I (3 ') is located at the part of sprocket wheel bottom and needs should be not less than material gravity G1Along the component F of belt direction
With power W2=power × speed=(F+T) V of the numerical value sum of frictional force T, i.e. conveyer belt I (3 ')1；
e3. by conservation of energy principle, have：W1=W2, i.e.,：Q×p=(F+T)V1, further derive and can obtain：P=(F+T) V1/Q=
(G1×sinα+f×G1×cosα)V1/Q=G1(sinα+f×cosα)V1/Q；
f3. in angle α, material transporting velocity V1, hydraulic motor flow Q, coefficient of friction f determine in the case of, hydraulic motor
The size of operating pressure p, is decided by the gravity G of material1Size, therefore by detect hydraulic motor operating pressure p, you can
Measure indirectly the gravity G that conveying material is subject to1, so that it is determined that quality m of the material conveyed on conveyer belt I (3 ')1；
g3. the material on conveyer belt I (3 ') is first sent into into screening plant III (6 '), in material conveying process, pressure transducer
By the operating pressure p signal output of hydraulic motor to PID regulator, when operating pressure p of hydraulic motor is reached corresponding to conveying
With the quality of material m that I (3 ') convey1ⅢValue reach m1ⅢDuring=M, the control hydraulic jack elongation of PID regulator output signal, and
Conveyer belt I (3 ') is made to contact with conveyer belt II (4 ')；
h3. the material on conveyer belt I (3 ') enters conveyer belt II (4 '), and enters screening plant IV via conveyer belt II (4 ')
Sensor is continued by the operating pressure p signal output of hydraulic motor to PID regulator in (7 '), pressure, when the work of hydraulic motor
Quality m of the pressure p correspondence into the material of screening plant IV (7 ')1ⅣDuring=M, PID regulator control hydraulic jack is retracted, and enters
And conveyer belt I (3 ') is separated with conveyer belt II (4 ')；
j3. the material on conveyer belt I (3 ') enters screening plant III (6 '), when the material (2 ') for sending into screening plant III (6 ')
Quality increases m again1ⅢDuring=M, conveyer belt I (3 ') is contacted with conveyer belt II (4 ') again, and material (5 ') is delivered to screening dress
Put IV (7 ')；
k3. quality m that the material (5 ') in screening plant IV (7 ') increases1ⅣDuring=M, conveyer belt I (3 ') again with conveyer belt II
(4 ') separate, material is delivered in screening plant III (6 ')；
It is characterized in that：Step a3To step f3Carry out successively.
7. check weighing distribution method as claimed in claim 6, it is characterised in that：Step g3To step k3Circulation is carried out.
8. check weighing distribution method as claimed in claims 6 or 7, it is characterised in that：Step g3To step k3Cycle-index root
Determine according to workload.
9. check weighing distribution method as claimed in claim 8, it is characterised in that：A in step3To step k3Described in conveyer belt I,
Conveyer belt II, screening plant III, screening plant IV are a kind of corresponding component of check weighing feeding-distribution device, and the check weighing feeding-distribution device includes
The conveyer belt I (3 ') for setting gradually and conveyer belt II (4 '), have between conveyer belt I (3 ') and conveyer belt II (4 ') it is certain between
Away from, screening plant III (6 ') and screening plant IV (7 ') is provided with below conveyer belt II (4 '), conveyer belt I (3 ') connects hydraulic oil
Cylinder, the hydraulic jack are driven by hydraulic motor (9 '), conveyer belt I (3 ') connection displacement transducer.
10. the check weighing distribution method as described in claim 5 or 9, it is characterised in that：Hydraulic motor (9 ') connects pressure sensing
Device.
11. check weighing distribution methods as claimed in claim 10, it is characterised in that：The pressure transducer is connected with PID regulator
Connect.
12. check weighing distribution methods as claimed in claim 11, it is characterised in that：Conveyer belt I (3 ') includes sprocket wheel (8 '), sprocket wheel
Conduction chain (10 ') is embedded on the outside of (8 ').
13. check weighing distribution methods as claimed in claim 12, it is characterised in that：Conveyer belt I (3 ') includes two groups of sprocket wheels (8 '),
Conduction chain (10 ') is embedded on the outside of every group of sprocket wheel (8 ') all, by laterally connecting between the conduction chain (10 ') of two groups of sprocket wheels (8 ')
Extension bar (11 ') connects, and balata belt is housed in transverse connecting rod (11 ').
14. check weighing distribution methods as claimed in claim 13, it is characterised in that：The balata belt rivet clasp is in transverse connecting rod
On (11 ').
15. check weighing distribution methods as claimed in claim 14, it is characterised in that：Every group of sprocket wheel of conveyer belt I (3 ') include to
Few two sprocket wheels (8 '), sprocket wheel (8 ') include tooth.
16. check weighing distribution methods as claimed in claim 15, it is characterised in that：The conveyer belt II (4 ') and the conveyer belt
The structure of I (3 ') is identical.
17. check weighing distribution methods as claimed in claim 16, it is characterised in that：The conveyer belt I (3 ') and railway ballast institute
It it is 0～30 ° in the angle of plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663288.6A CN104692082B (en) | 2013-12-10 | 2013-12-10 | Weight measurement and screening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663288.6A CN104692082B (en) | 2013-12-10 | 2013-12-10 | Weight measurement and screening method |
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| Publication Number | Publication Date |
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| CN104692082A CN104692082A (en) | 2015-06-10 |
| CN104692082B true CN104692082B (en) | 2017-03-22 |
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| CN201310663288.6A Active CN104692082B (en) | 2013-12-10 | 2013-12-10 | Weight measurement and screening method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109533684B (en) * | 2018-12-05 | 2019-12-13 | 合肥工业大学 | Horizontal warehouse with automatic warehouse entry and exit and grain warehouse entry method thereof |
| CN111248247B (en) * | 2020-03-18 | 2023-05-12 | 厦门益和丰食品集团有限公司 | Weighing, feeding, kneading and rolling conveying system and use method |
| CN114063664B (en) * | 2021-11-11 | 2024-03-22 | 湖南三一中益机械有限公司 | Paver, paver distributing system, and control method and device of paver distributing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612641Y (en) * | 2003-05-16 | 2004-04-21 | 昆明中铁大型养路机械集团有限公司 | Chain type conveyor belt capable of resisting deflection deformation |
| CN2819183Y (en) * | 2005-09-01 | 2006-09-20 | 沈阳建筑大学 | Electronic belt scale |
| CN102154961A (en) * | 2010-02-11 | 2011-08-17 | 襄樊金鹰轨道车辆有限责任公司 | Ballast screening machine |
| CN203174447U (en) * | 2013-03-06 | 2013-09-04 | 昆明中铁大型养路机械集团有限公司 | Side-cutting type turnout screen scarifier |
| CN203581907U (en) * | 2013-12-10 | 2014-05-07 | 昆明中铁大型养路机械集团有限公司 | Weighing and material distributing device |
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