CN110108344B - Aggregate metering belt scale calibration device and method - Google Patents
Aggregate metering belt scale calibration device and method Download PDFInfo
- Publication number
- CN110108344B CN110108344B CN201910457659.2A CN201910457659A CN110108344B CN 110108344 B CN110108344 B CN 110108344B CN 201910457659 A CN201910457659 A CN 201910457659A CN 110108344 B CN110108344 B CN 110108344B
- Authority
- CN
- China
- Prior art keywords
- weight
- calibration
- driving device
- position sensor
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005303 weighing Methods 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 14
- 239000010426 asphalt Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
- G01G23/012—Testing or calibrating of weighing apparatus with load cells comprising in-build calibration weights
Abstract
The invention discloses a calibration device and a calibration method for an aggregate metering belt scale.A supporting device of the calibration device is arranged above a weight assembly, a driving device is arranged on the supporting device and connected with the weight assembly, and the driving device can drive the weight assembly to move up and down; the weight mounting frame is connected with the driving device, the first weight and the second weight are both arranged on the weight mounting frame and can move up and down freely relative to the weight mounting frame, and the first weight is smaller than the up and down movable distance of the second weight on the weight mounting frame; when the weight mounting frame moves upwards, the first weight and the second weight can be lifted by the weight mounting frame in sequence, and after the first weight and the second weight are lifted, the first weight and the second weight are not contacted; when the driving device drives the weight mounting frame to move downwards, the second weight is placed on the ground, and the first weight is placed on the first weight. The invention can calibrate the aggregate metering belt balance quickly, accurately and labor-saving without using a real object to calibrate the aggregate metering belt balance.
Description
Technical Field
The invention relates to the field of asphalt mixture stirring stations, in particular to an aggregate metering belt scale calibration device and method.
Background
The asphalt mixture stirring equipment is special equipment for producing asphalt mixture in highway construction, and mainly comprises an aggregate batching system, a drying and heating system, a lifting system, a vibration screening system, a weighing and stirring system, a dust removal system, a finished product bin storage system and the like. Wherein, cold material storehouse batching system that gathers materials comprises feed bin, feed motor, feed belt scale, defeated material belt etc.. Aggregate batching error and stability have become an important index for measuring the technical advancement of asphalt stirring equipment.
In order to ensure the metering accuracy, the aggregate metering belt balance must be metered and calibrated before and during use. The calibration method is generally divided into physical calibration and analog calibration. The real object calibration is a method for weighing materials (or similar materials) on a standard scale, then discharging the materials to a storage bin, and weighing the materials through a belt scale through a storage bin outlet for calibration. The accuracy of the real object calibration is higher, but the workload is larger, and the manpower and material resources are more consumed. Analog calibration is generally classified into chain code calibration and hanging code calibration. The chain code calibration is a calibration method for simulating the weight of materials flowing through each meter of belt length of the belt scale, and the chain code calibration device is placed on the belt scale which is static or moving to perform static (the metering belt scale does not rotate) or dynamic calibration (the metering belt scale rotates). The equipment required by the calibration of the chain code is large, the cost is high, sometimes the chain code is limited by the installation space, and the applicability is not strong; the hanging code calibration is a method for placing (or hanging) standard weights on an electronic belt scale for calibration. In engineering application, the hanging code calibration method is commonly applied. At present, the hanging code calibration is mainly operated by manually placing and taking weights, and the defects of complex operation process, labor and time consumption, low calibration efficiency, large human error and the like exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the device and the method for calibrating the aggregate metering belt balance.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a belt balance calibration device gathers materials, includes strutting arrangement, drive arrangement and weight subassembly, strutting arrangement sets up in the top of weight subassembly, and drive arrangement sets up on strutting arrangement, and drive arrangement is connected with the weight subassembly, and drive arrangement can drive the weight subassembly and reciprocate;
the weight assembly comprises a first weight, a second weight and a weight mounting frame, the weight mounting frame is connected with the driving device, the first weight and the second weight are both installed on the weight mounting frame, the first weight and the second weight can move up and down relative to the weight mounting frame, and the up-down movable distance of the first weight on the weight mounting frame is smaller than the up-down movable distance of the second weight on the weight mounting frame; when the weight mounting frame moves upwards, the first weight and the second weight can be lifted by the weight mounting frame in sequence, and after the first weight and the second weight are lifted, the first weight and the second weight are not contacted; when the driving device drives the weight mounting frame to move downwards, the second weight and the first weight can be placed on the fixed platform in sequence.
The weight assembly comprises a first weight, a second weight and a weight mounting frame, the weight mounting frame comprises a first stud, a second stud, a first longitudinal connecting rod, a second longitudinal connecting rod, a beam rod and a transverse connecting rod, the middle part of the beam rod is connected with the output end of the driving device, the two ends of the beam rod are respectively connected with the first longitudinal connecting rod and the second longitudinal connecting rod, the two ends of the first stud and the two ends of the second stud are respectively connected with the first longitudinal connecting rod and the second longitudinal connecting rod, and the first stud is arranged above the second stud;
transverse through holes are formed in the first weight and the second weight, the first weight is sleeved on the first stud through the through holes, and the second weight is sleeved on the second stud through the through holes; the diameter of the through hole, through which the first stud passes, on the first weight is not smaller than 2 times of the nominal diameter of the first stud; the diameter of the through hole for the second double-ended screw column to pass through on the second weight is not smaller than 2 times of the diameter of the through hole for the first double-ended screw column to pass through on the first weight;
gaps are reserved between the first longitudinal connecting rod and the second longitudinal connecting rod and between the first weight and the second weight.
The nominal diameters of the first stud and the second stud are equal.
The middle part of the beam rod is connected with the output end of the driving device in a shaft way, so that the beam rod can freely rotate in a vertical plane at the shaft connection.
The first longitudinal connecting rod and the second longitudinal connecting rod are connected with transverse connecting rods for preventing the first weights and the second weights from rotating, and gaps are reserved between the transverse connecting rods and the first weights and between the transverse connecting rods and the second weights.
The belt conveyor comprises a weight assembly, a display, a first position sensor, a second position sensor and a controller, wherein the weight assembly is arranged on the weight assembly, the weight assembly is connected with the weight assembly, and the controller is connected with the weight assembly and is used for controlling the driving device to drive the weight assembly to move up and down according to weighing information of the weight assembly and detection information of the weight assembly.
The supporting device comprises a hanging rod and a flat plate, the hanging rods are symmetrically connected to the two ends of the flat plate, the upper end of the hanging rod can be connected with a bridge of the aggregate metering belt scale, and the driving device is fixedly connected with the flat plate.
The driving device comprises a motor and a screw rod lifter, an output shaft of the motor is connected with an input shaft of the screw rod lifter, the motor and the screw rod lifter are fixedly arranged on the supporting device, an axis of a screw rod of the screw rod lifter is in a vertical state and is perpendicular to the output shaft of the motor, a lifting direction of the screw rod lifter and a weighing direction of the weighing sensor are on the same vertical straight line, and the lower end of the screw rod lifter is connected with the weight component.
The calibration method of the aggregate metering belt scale is carried out by the calibration device and comprises the following steps:
s1, connecting a supporting device with an aggregate metering belt scale, wherein the supporting device is positioned right below a weighing sensor part connected with the aggregate metering belt scale;
s2, feeding aggregate on the empty aggregate metering belt scale, and stopping the aggregate metering belt scale;
s3, the driving device controls the weight assembly to move downwards, so that the second weight falls on the fixed platform, the first weight falls on the second weight, the first weight is not contacted with the first stud, the second weight is not contacted with the second stud, and the symmetrical weight sensor performs zero marking operation;
s4, first calibration
The driving device drives the weight mounting rack to move upwards and lift the first weight and the second weight in sequence, and the weighing sensor of the aggregate metering belt balance measures the total mass of the first weight and the second weight and calculates the average value of the total mass
According to the average valueCalculating a first calibration coefficient K' of the calibration device;
s5, calibrating for the second time
The driving device drives the weight mounting rack to move downwards to enable the first weight to be in a lifted state, the second weight is placed on the fixed platform, and the second stud is not contacted with the second weight; the weighing sensor detects the mass of the first weight; average value of the mass of the first weight (12) is obtained according to the detection value
According to the average valueCalculate the second markA constant coefficient K';
s6, judging whether the operation of S2-S5 is qualified or not according to the first calibration coefficient K 'and the second calibration coefficient K';
s7, if the operation of the S2-S5 is judged to be qualified, obtaining a calibration coefficient standard value K of the aggregate metering belt scale according to the first calibration coefficient K 'and the second calibration coefficient K';
if the operation of S2-S5 is judged to be unqualified, S2-S6 are repeated until the operation of S2-S5 is judged to be qualified.
First calibration coefficientSecond calibration factor->Calibration coefficient standard value k= (K' +k ")/2, where m 1 For the mass, m, of the first weight (12) 2 Is the mass of the second weight (13).
The process for judging whether the calibration operation of S3 and S4 is qualified or not according to the first calibration coefficient K 'and the second calibration coefficient K' is as follows:
if the I (K ' -K ')/K ' | is less than or equal to lambda, the operation of S2-S5 is qualified;
if I (K ' -K ')/K ' | > lambda, then the operation of S2-S5 is disqualified;
wherein lambda is a preset value.
Lambda was 0.5%.
In the step S3, the driving device controls the weight assembly to move downwards, the second position sensor detects that the second weight falls on the fixed platform, and the first position sensor detects that the first weight falls on the second weight;
s4, respectively inputting the mass m of the first weight to the controller 1 Mass m of the second weight 2 The method comprises the steps of carrying out a first treatment on the surface of the The controller controls the driving device to drive the weight mounting frame to move upwards and lift the first weight and the second weight in sequence until the first position sensor and the second position sensor detect that the first weight and the second weight are lifted respectively, and the controller controls the driving device to stop driving the weight mounting frame;
after the controller controls the driving device to drive the weight mounting frame to move upwards, the controller reads the measured value of the weighing sensor according to a preset time interval, calculates an average value A of the total mass of the first weight and the second weight and calculates a first calibration coefficient K' of the calibration device according to the average value A;
s5, the controller controls the driving device to drive the weight mounting frame to move downwards until the first position sensor detects that the first weight is lifted, the second position sensor detects that the second weight is placed on the fixed platform and the second stud is not contacted with the second weight;
after the controller controls the driving device to stop driving the weight mounting frame, the controller reads the measured value of the weighing sensor according to the preset time interval and calculates the average value of the measured value of the second weight massAccording to average->Calculating a second calibration coefficient K';
in S6, the controller judges whether the operations of S2-S5 are qualified or not according to the first calibration coefficient K 'and the second calibration coefficient K';
and S7, if the operation of the S2-S5 is judged to be qualified, the controller obtains a calibration coefficient standard value K of the aggregate metering belt scale according to the first calibration coefficient K 'and the second calibration coefficient K' and controls the display to display the calibration coefficient standard value K.
The invention has the following beneficial effects:
the driving device of the aggregate metering belt balance calibration device is arranged on the supporting device, the driving device is connected with the weight mounting frame of the weight assembly, and the driving device can drive the weight assembly to move up and down; the middle part of a beam rod of the weight assembly is connected with the output end of the driving device, and the driving device can drive the whole weight assembly to move up and down; the two ends of the beam rod are respectively connected with a first longitudinal connecting rod and a second longitudinal connecting rod, the two ends of the first double-end stud and the two ends of the second double-end stud are respectively connected with the first longitudinal connecting rod and the second longitudinal connecting rod, and the first double-end stud is arranged above the second double-end stud; transverse through holes are formed in the first weight and the second weight, the first weight is sleeved on the first stud through the through holes, and the second weight is sleeved on the second stud through the through holes; therefore, the first double-head screw column and the second double-head screw column can lift the first weight and the second weight respectively; the diameter of the through hole on the first weight for the first stud to pass through is not smaller than 2 times of the nominal diameter of the first stud; the diameter of the through hole for the second double-ended screw column to pass through on the second weight is not smaller than 2 times of the diameter of the through hole for the first double-ended screw column to pass through on the first weight; therefore, the first weight can be lifted through the first stud, the second weight can be lifted by the second stud after the first weight is completely lifted, and the first weight and the second weight are not contacted with each other after being lifted, so that the device avoids the operations of manually taking and placing the weights, and consumes less manpower and material resources; gaps are reserved between the first longitudinal connecting rod and the second longitudinal connecting rod and between the first weight and the second weight, and can prevent friction force between the first longitudinal connecting rod and the second longitudinal connecting rod and between the first weight and between the second longitudinal connecting rod and the second weight from affecting the accuracy of a calibration result; when the aggregate metering belt balance is calibrated through the calibration device, S1, the supporting device is connected with the aggregate metering belt balance and is positioned under a weighing sensor part connected with the aggregate metering belt balance; s2, feeding aggregate on the empty aggregate metering belt scale, and stopping the aggregate metering belt scale; s3, then the driving device controls the weight assembly to move downwards so that the second weight falls on the fixed platform, the first weight falls on the second weight, the first weight is not contacted with the first stud, the second weight is not contacted with the second stud, and the symmetrical weight sensor performs zero marking operation; s4, performing first calibration calculation to obtain a first calibration coefficient K'; s5, performing second calibration calculation until a second calibration coefficient K'; s6, judging whether the operation of S2-S5 is qualified or not according to the first calibration coefficient K 'and the second calibration coefficient K'; s7, if the operation of the S2-S5 is judged to be qualified, obtaining a calibration coefficient standard value K of the aggregate metering belt scale according to the first calibration coefficient K 'and the second calibration coefficient K'; if the operation of S2-S5 is judged to be unqualified, S2-S6 are repeated until the operation of S2-S5 is judged to be qualified. Therefore, the invention can calibrate the aggregate metering belt balance quickly, accurately and labor-saving compared with the calibration process of the existing calibration device without using a real object.
Further, the middle part of the beam rod is connected with the output end of the driving device in a shaft way, so that the beam rod can freely rotate along the vertical plane, and therefore bending moment generated at the connecting part of the beam rod and the driving device can be avoided, and the accuracy of a calibration result is influenced.
Further, be connected with the transverse connection pole that prevents first weight and second weight pivoted on first longitudinal connection pole and the second longitudinal connection pole, transverse connection pole can prevent that first weight and second weight from taking place to rotate around first double-end screw bolt and second double-end screw bolt respectively and leading to the structure of whole device unstable and first weight and second weight to take place to rotate and contact at the demarcation in-process, lead to demarcation result's inaccuracy.
Furthermore, by arranging the first position sensor, the second position sensor and the controller, the calibration device can be more intelligent, and automatic control and automatic calibration are realized.
The calibration method of the aggregate metering belt scale is carried out by the calibration device of the aggregate metering belt scale, and the beneficial effects of the calibration device of the invention can show that the calibration method of the invention does not adopt a real object to calibrate the aggregate metering belt scale, thus the workload is smaller, the manpower and material resources are less, and the method has the advantages of accuracy, rapidness and labor saving.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an aggregate metering belt balance calibration device according to an embodiment of the present invention after the aggregate metering belt balance calibration device is mounted on the aggregate metering belt balance.
Fig. 2 is a schematic diagram of a weight assembly according to an embodiment of the invention.
Figure 3 is a longitudinal cross-sectional view of the weight assembly of the embodiment of figure 2 of the present invention.
Fig. 4 is a schematic diagram of a control system of the calibration device of the aggregate metering belt balance in the embodiment of the invention.
Fig. 5 is a schematic diagram of the method principle of the calibration method of the aggregate metering belt balance of the invention.
Wherein 1 is a cold storage bin; 2 is a belt conveyor; 3 is a weighing sensor; 4 is an aggregate metering belt scale; 5 is a suspender; 6 is a flat plate; 7 is an electric motor; 8 is a screw rod lifter; 9 is a first position sensor; 10 is a second position sensor; 11 is a controller; 12 is a first weight; 12-1 is a first through hole; 13 is a second weight; 13-1 is a second through hole; 14 is a second stud; 15 is a first stud; 16-1 is a first longitudinal tie; 16-2 is a second connecting rod; 17 is a beam; 18 is a transverse connecting rod; 19 is a display.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the calibration device of the aggregate metering belt balance comprises a supporting device, a driving device and a weight assembly, wherein the supporting device is arranged above the weight assembly; the weight assembly comprises a first weight 12, a second weight 13 and a weight mounting frame, the weight mounting frame comprises a first stud 15, a second stud 14, a first longitudinal connecting rod 16-1, a second longitudinal connecting rod 16-2, a beam rod 17 and a transverse connecting rod 18, the middle part of the beam rod 17 is connected with the output end of the driving device, the two ends of the beam rod 17 are respectively connected with the first longitudinal connecting rod 16-1 and the second longitudinal connecting rod 16-2, the two ends of the first stud 15 and the two ends of the second stud 14 are respectively connected with the first longitudinal connecting rod 16-1 and the second longitudinal connecting rod 16-2, and the first stud 15 is arranged above the second stud 14; the first weight 12 and the second weight 13 are provided with transverse through holes, referring to fig. 3, the transverse through holes formed in the first weight 12 are the first through holes 12-1, and the transverse through holes formed in the second weight 13 are the second through holes 13-1; the first weight 12 is sleeved on the first stud 15 through the first through hole 12-1, and the second weight 13 is sleeved on the second stud 14 through the second through hole 13-1; gaps are reserved between the first longitudinal connecting rod 16-1 and the second longitudinal connecting rod 16-2 and the first weight 12 and between the first longitudinal connecting rod and the second weight 13.
Referring to fig. 1, the process of calibrating the aggregate metering belt balance by the calibrating device with the structure comprises the following steps:
s1, connecting a supporting device with an aggregate metering belt balance 4, wherein the supporting device is positioned right below a weighing sensor 3 connected with the aggregate metering belt balance 4;
s2, the aggregate on the empty aggregate metering belt scale 4 is moved, and the aggregate metering belt scale 4 is stopped;
s3, the driving device controls the weight assembly to move downwards, so that the second weight 13 and the first weight 12 are placed on a fixed platform (such as the surface of a fixed object such as the ground), the first weight 12 is not contacted with the first stud 15, the second weight 13 is not contacted with the second stud 14, and the symmetrical weight sensor 3 performs zero marking operation;
s4, first calibration
The driving device drives the weight mounting rack to move upwards and lift the first weight 12 and the second weight 13 in sequence, the weighing sensor 3 of the aggregate metering belt balance 4 measures the total mass of the first weight 12 and the second weight 13 and calculates the average value of the total mass
According to the average valueCalculating a first calibration factor of the calibration device>Wherein m is 1 For the mass, m, of the first weight (12) 2 Is the mass of the second weight (13); the method comprises the steps of carrying out a first treatment on the surface of the
S5, calibrating for the second time
The driving device drives the weight mounting frame to move downwards to enable the first weight 12 to be in a lifted state, and the second weight13 are placed on the fixed platform, and the second stud 14 is not contacted with the second weight 13; detecting the mass of the first weight 12 by means of the load cell 3; average value of the mass of the first weight 12 is obtained according to the detection value
According to the average valueCalculating a second calibration factor->
S6, judging whether the operation of S2-S5 is qualified or not according to the first calibration coefficient K 'and the second calibration coefficient K', wherein the specific process is as follows:
if the I (K ' -K ')/K ' | is less than or equal to lambda, the operation of S2-S5 is qualified; if I (K ' -K ')/K ' | > lambda, then the operation of S2-S5 is disqualified; wherein lambda is a preset value, generally 0.5%;
s7, if the operation of the S2-S5 is judged to be qualified, obtaining a calibration coefficient standard value K= (K '+K')/2 of the aggregate metering belt scale according to the first calibration coefficient K 'and the second calibration coefficient K';
if the operation of S2-S5 is judged to be unqualified, S2-S6 are repeated until the operation of S2-S5 is judged to be qualified.
As a preferred embodiment of the present invention, as shown in FIG. 3, the nominal diameters D of the first stud 15 and the second stud 14 are equal, and the diameter D1 of the first through hole 12-1 on the first weight 12 is not smaller than 2 times the nominal diameter D of the first stud 15; the diameter D2 of the second through hole 13-1 on the second weight 13 is not smaller than 2 times the diameter of the first through hole 12-1. Under the size requirement, when the weight mounting frame moves upwards, the first weight 12 and the second weight 13 can be lifted by the weight mounting frame in sequence, and after the first weight and the second weight are lifted, the first weight 12 and the second weight 13 are not contacted; when the driving means drives the weight mounting frame to move downwards, the second weight 13 is placed on the fixed platform first, and then the first weight 12 can be dropped onto the first weight 13.
As a preferred embodiment of the invention, as shown in fig. 1-3, the middle of the beam 17 is pivotally connected to the output end of the drive means such that the beam 17 is free to rotate in a vertical plane along the pivot connection.
As a preferred embodiment of the present invention, if one each of the first stud 15 and the second stud 14 is provided, and the first weight 12 and the second weight 13 may rotate relative to the first stud 15 and the second stud 14, respectively, resulting in unstable structure of the whole calibration device, it is necessary to connect a transverse connection rod 18 for preventing the first weight 12 and the second weight 13 from rotating to the first longitudinal connection rod 16-1 and the second longitudinal connection rod 16-2, and the transverse connection rod 18 can surround the sides of the first weight 12 and the second weight 13 to prevent the first weight 12 and the second weight 13 from rotating around the first stud 15 and the second stud 14, respectively; in addition, gaps are needed between the transverse connecting rod 18 and the first weight 12 and between the transverse connecting rod 18 and the second weight 13, so that friction between the first weight 12 and the transverse connecting rod 18 and friction between the second weight 13 and the transverse connecting rod 18 are prevented, and errors of the calibration device are large. If two first studs 15 and two second studs 14 are respectively arranged, two first through holes 12-1 and two second through holes 13-1 which are horizontally distributed are correspondingly arranged on the first weights 12 and the second weights 13 respectively, the two first through holes 12-1 are symmetrically arranged on the first weights 12, and the two second through holes 13-1 are symmetrically arranged on the second weights 13, then a transverse connecting rod 18 is not needed to prevent the first weights 12 and the second weights 13 from rotating.
As a preferred embodiment of the present invention, referring to fig. 1 and 4, in order to make the aggregate weighing belt balance calibration device of the present invention have an intelligent function, and to achieve the purpose of automatic control and dynamic calibration, the aggregate weighing belt balance calibration device of the present invention further includes a display 19, a first position sensor 9, a second position sensor 10, and a controller, where the display 19, the driving device, the first position sensor 9, and the second position sensor 10 are all connected to the controller, the first position sensor 9 and the second position sensor 10 are disposed at one side of the weight assembly, the first position sensor 9 and the second position sensor are respectively used to detect positions of the first weight 12 and the second weight 13, and the controller is also connected to the weighing sensor 3 of the aggregate weighing belt balance 4, where the controller is further used to control the driving device to drive the weight assembly to move up and down according to weighing information of the weighing sensor 3, detection information of the first position sensor 9, and detection information of the second position sensor 10.
As a preferred embodiment of the present invention, referring to fig. 1, the detection point of the first position sensor 9 is in the plane of the upper surface of the first weight 12; the detection point of the second position sensor 10 is in the plane of the upper surface of the second weight 13.
As a preferred embodiment of the present invention, in the above-described embodiment, the supporting means and the driving means may adopt the following structures:
the supporting device comprises a hanging rod 5 and a flat plate 6, the hanging rod 5 is symmetrically connected to two ends of the flat plate 6, the upper end of the hanging rod 5 can be connected with a bridge of the aggregate metering belt scale 4, and the driving device is fixedly connected with the flat plate 6. The driving device comprises a motor 7 and a screw rod lifter 8, an output shaft of the motor 7 is connected with an input shaft of the screw rod lifter 8, the motor 7 and the screw rod lifter 8 are fixedly arranged on the supporting device, an axis of a screw rod of the screw rod lifter 8 is in a vertical state and is perpendicular to the output shaft of the motor 7, a screw rod axis of the screw rod lifter 8 is coaxial with the weighing direction of the weighing sensor 3, and the lower end of a screw rod of the screw rod lifter 8 is connected with the weight assembly.
Examples
Referring to fig. 1 and 2, the calibration device of the aggregate metering belt balance of the present embodiment includes a boom 5, a flat plate 6, a motor 7, a screw lifter 8, a first position sensor 9, a second position sensor 10, a controller 11, a first weight 12, a second weight 13, a second stud 14, a first stud 15, a longitudinal connecting rod 16, a beam 17, a transverse connecting beam 18, and a display 19. As shown in fig. 1, when the material weighing belt scale calibration device is used, the hanging rod 5 is connected with the bridge of the material weighing belt scale 4 through bolts. The screw rod lifter 8 and the motor 7 are fixed on the flat plate 6 through bolts, and the flat plate 6 is provided with a through hole for the screw rod lifter 8 to extend out; the lower end of the screw rod lifter 8 is connected with the beam rod 17 through a bolt; the axis of the screw rod lifter 8 is coaxial with the weighing direction of the weighing sensor 3; the beam 17 is connected with the longitudinal connecting rod 16 through screws; the longitudinal connecting rod 16 is provided with a through hole for the first double-ended stud 14 and the second double-ended stud 15 to penetrate; the longitudinal connecting rods 16 are welded with transverse connecting rods 18; the first stud 15 and the second stud 14 pass through the first through hole 12-1 on the first weight 12 and the second through hole 13-1 on the second weight 13, respectively; the first position sensor 9 and the second position sensor are both arranged and fixed on the ground; the detection point of the first position sensor 9 is positioned in the plane of the upper surface of the first weight 12; the detection point of the second position sensor 10 is positioned in the plane of the upper surface of the second weight 13; the first position sensor 9 and the second position sensor 10 are respectively used for detecting the positions of the first weight 12 and the second weight 13; the first position sensor 9, the second position sensor 10, the motor 7, the display 19 and the weighing sensor 3 connected with the aggregate metering belt balance 4 are all connected with the controller 11 in a line way. The screw rod lifter 8 is provided with an anti-rotation structure, and the screw rod of the screw rod lifter 8 can not rotate in the working process and only moves up and down. The diameter D2 of the second through hole 13-1 on the second weight 13 is not smaller than 2 times the diameter D1 of the first through hole 12-1 on the first weight 12. The first through hole 12-1 has a diameter D1 that is not less than 2 times the nominal diameter D of the second stud 14. The nominal diameters of the first stud 15 and the second stud 14 are equal. Gaps are reserved between the longitudinal connecting rod 16 and the transverse connecting rod 18 and the first weight 12 and the second weight 13, and the fact that friction force exists between the longitudinal connecting rod 16 and the transverse connecting rod 18 and the first weight 12 and the second weight 13 to influence calibration accuracy is avoided.
Referring to fig. 1, 2, 3, 4 and 5, when the above aggregate metering belt balance calibration device is used for calibration operation, the method comprises the following steps:
step 1) the aggregate on the empty aggregate metering belt balance 4 is moved, the aggregate metering belt balance 4 is stopped, and whether the function of the weighing sensor 3 is good is checked.
Step 2) starting peeling and zero marking operation
The second position sensor 10 detects that the second weight 13 falls to the ground, and the first position sensor 9 detects that the first weight 12 falls to the second weight 13; the first stud 15 is not contacted with the first weight 12, the second stud 14 is not contacted with the second weight 13, and then the symmetrical weight sensor 3 performs zero marking operation; thus, the peeling and zero marking operation is completed.
Step 3) begin the first calibration
The first weights 12 are respectively input to the controller 11 to form the mass m 1 Mass m of the second weight 13 2 The method comprises the steps of carrying out a first treatment on the surface of the Then the controller 11 sends a signal to enable the motor 7 to rotate so as to drive the screw rod of the screw rod lifter 8 to move upwards, the upward movement of the screw rod drives the weight mounting frame to move upwards integrally, and when the first position sensor 9 detects that the first weight 12 is lifted by the first stud 15, the second position sensor 10 detects that the second weight 13 is lifted by the second double-head stud 14 and leaves the ground; the controller 11 reads the measurement value of the weighing sensor 3 a plurality of times at preset time intervals (the preset time intervals are generally 0.5 to 1 s), and then averages the total mass of the first weight 12 and the second weight 13The controller 11 is based on the average->Automatically calculating a first calibration coefficient K',and finishing the first calibration operation.
Step 4) start of the second calibration
The controller 11 sends a signal to enable the motor 7 to rotate until the first position sensor 9 detects that the first weight 12 is lifted by the first stud 15, the second position sensor 10 detects that the second weight 13 falls to the ground, and the second stud 14 is not contacted with the second weight 13; the controller 11 reads the measurement value of the weighing sensor 3 for a plurality of times according to a preset time interval (the preset time interval is generally 0.5-1 s), and calculates the average value of the mass measurement values of the first weight 12Controller for controlling a power supply11 according to the average->Automatically calculating the calibration coefficient K'>And finishing the second calibration operation.
Step 5) determining standard value of calibration coefficient
If the value of (K ' -K ')/K ' | is less than or equal to 0.5%, the controller 11 judges that the calibration operation is qualified, the controller 11 automatically stores and displays a calibration coefficient standard value K, K= (K ' +K ')/2 through the display 19; step 6) is then performed, this time the calibration operation is completed.
If I (K ' -K ')/K ' | >0.5%, the controller 11 automatically determines that the calibration operation is not qualified; and then repeating the operations from the step 2) to the step 4) until the absolute value of (K ' -K ')/K ' | is less than or equal to 0.5 percent, and the calibration operation completion requirement is met; step 6) is then performed, this time the calibration operation is completed.
Step 6) the controller 11 sends out a signal to enable the motor 7 to rotate, the screw elevator 8 moves downwards until the second position sensor 10 detects that the second weight 13 falls to the ground, the first position sensor 9 detects that the first weight 12 falls to the second weight 13, the first stud 15 is not contacted with the first weight 12, and the second stud 14 is not contacted with the second weight 13.
As can be seen from the scheme, the invention has the following characteristics:
the calibration device of the aggregate metering belt balance is powered by the motor 7, and the controller 11 automatically controls, so that the operations of manually taking and placing weights are avoided, and manpower and material resources are consumed less.
The aggregate metering belt balance calibration device is provided with the first weight 12 and the second weight 13, the first weight 12 can be lifted independently by the screw rod lifter 8 or the first weight 12 and the second weight 13 can be lifted together, the calibration range is wide, and the calibration precision is high.
According to the calibration method disclosed by the invention, the controller 11 reads the measured value of the weighing sensor 3 for a plurality of times according to the preset time interval, the calculated average value of the measured values is substituted into calculation, and the calculation result is more reliable.
The controller 11 sends a signal, the screw rod lifter 8 lifts the first weight 12 and the second weight 13, and the controller 11 automatically calculates a calibration coefficient K'; and then the controller 11 sends a signal, the screw rod lifter 8 only lifts the first weight 12, the controller 11 automatically calculates to obtain the calibration coefficient K ', and whether the calibration operation is qualified or not is judged by calculating the relative error of K ' and K ', so that the method is simpler and more efficient.
The calibration device is convenient to install and stable and reliable in performance.
Claims (7)
1. The calibration method of the aggregate metering belt scale is carried out by a calibration device of the aggregate metering belt scale and is characterized in that the calibration device of the aggregate metering belt scale comprises a supporting device, a driving device and a weight assembly, wherein the supporting device is arranged above the weight assembly, the driving device is arranged on the supporting device, the driving device is connected with the weight assembly, and the driving device can drive the weight assembly to move up and down;
the weight assembly comprises a first weight (12), a second weight (13) and a weight mounting frame, the weight mounting frame comprises a first double-head stud (15), a second double-head stud (14), a first longitudinal connecting rod (16-1), a second longitudinal connecting rod (16-2), a beam rod (17) and a transverse connecting rod (18), the middle part of the beam rod (17) is connected with the output end of the driving device, the two ends of the beam rod (17) are respectively connected with the first longitudinal connecting rod (16-1) and the second longitudinal connecting rod (16-2), the two ends of the first double-head stud (15) and the two ends of the second double-head stud (14) are respectively connected with the first longitudinal connecting rod (16-1) and the second longitudinal connecting rod (16-2), and the first double-head stud (15) is arranged above the second double-head stud (14);
transverse through holes are formed in the first weight (12) and the second weight (13), the first weight (12) is sleeved on the first stud (15) through the through holes, and the second weight (13) is sleeved on the second stud (14) through the through holes; the diameter of the through hole on the first weight (12) for the first stud (15) to pass through is not smaller than 2 times of the nominal diameter of the first stud (15); the diameter of the through hole of the second weight (13) for the second double-ended screw column (14) to pass through is not smaller than 2 times of the diameter of the through hole of the first weight (12) for the first double-ended screw column (15) to pass through;
gaps are reserved between the first longitudinal connecting rod (16-1) and the second longitudinal connecting rod (16-2) and the first weight (12) and between the first longitudinal connecting rod and the second weight (13);
the calibration method of the aggregate metering belt scale comprises the following steps:
s1, connecting a supporting device with an aggregate metering belt balance (4), wherein the supporting device is positioned right below a weighing sensor (3) connected with the aggregate metering belt balance (4);
s2, collecting materials on the empty material collecting metering belt balance (4), and stopping the material collecting metering belt balance (4);
s3, the driving device controls the weight assembly to move downwards, so that the second weight (13) falls on the fixed platform, the first weight (12) falls on the second weight (13), the first weight (12) is not contacted with the first stud (15), the second weight (13) is not contacted with the second stud (14), and the symmetrical weight sensor (3) performs zero marking operation;
s4, first calibration
The driving device drives the weight mounting rack to move upwards and lift the first weight (12) and the second weight (13) in sequence, the weighing sensor (3) of the aggregate metering belt balance (4) measures the total mass of the first weight (12) and the second weight (13) and calculates the average value of the total massThe method comprises the steps of carrying out a first treatment on the surface of the According to average->Calculating a first calibration factor of the calibration device>；
S5, calibrating for the second time
The driving device drives the weight mounting rack to move downwards so that the first weight (12) is in a lifted state, the second weight (13) is placed on the fixed platform, and the second double-head screw column (14) is not contacted with the second weight (13); the weighing sensor (3) detects the mass of the first weight (12); average value of the mass of the first weight (12) is obtained according to the detection value；
According to the average valueCalculating a second calibration factor of the calibration device>；
S6, according to the first calibration coefficientAnd a second calibration factor->Judging whether the operation of S2-S5 is qualified or not;
s7, if the operation of S2-S5 is judged to be qualified, the operation is carried out according to the first calibration coefficientAnd a second calibration factor->Obtaining the standard value of the calibration coefficient of the aggregate metering belt scale>；
If the operation of S2-S5 is judged to be unqualified, repeating S2-S6 until the operation of S2-S5 is judged to be qualified;
first calibration coefficientThe method comprises the steps of carrying out a first treatment on the surface of the Second calibration factor->Calibration coefficient standard valueThe method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>For the mass of the first weight (12), +.>Is the mass of the second weight (13);
according to a first calibration coefficientAnd a second calibration factor->The process for judging whether the calibration operation is qualified is as follows:
if it isThe operation of S2-S5 is qualified;
if it isThe operation of S2-S5 is not qualified;
wherein the method comprises the steps ofIs a preset value.
2. The calibration method of the aggregate metering belt balance according to claim 1, wherein the calibration device of the aggregate metering belt balance further comprises a display (19), a first position sensor (9), a second position sensor (10) and a controller, wherein the display (19), the driving device, the first position sensor (9) and the second position sensor (10) are all connected with the controller, the first position sensor (9) and the second position sensor (10) are arranged on one side of a weight assembly, the first position sensor (9) and the second position sensor are respectively used for detecting positions of the first weight (12) and the second weight (13), the controller is connected with a weighing sensor (3) of the aggregate metering belt balance (4), and the controller is used for controlling the driving device to drive the assembly to move up and down according to weighing information of the weighing sensor (3), detection information of the first position sensor (9) and detection information of the second position sensor (10);
in the step S3, the driving device controls the weight assembly to move downwards, the second position sensor (10) detects that the second weight (13) falls on the fixed platform, and the first position sensor (9) detects that the first weight (12) falls on the second weight (13);
s4, respectively inputting the mass of the first weight (12) to the controller (11)And the mass of the second weight (13)>The method comprises the steps of carrying out a first treatment on the surface of the The controller controls the driving device to drive the weight mounting frame to move upwards and lift the first weight (12) and the second weight (13) in sequence until the first position sensor (9) and the second position sensor (10) detect that the first weight (12) and the second weight (13) are lifted respectively, and the controller controls the driving device to stop driving the weight mounting frame;
after the controller controls the driving device to drive the weight mounting frame to move upwards, the controller (11) reads the measured value of the weighing sensor (3) according to a preset time interval, and calculates the average value of the total mass of the first weight (12) and the second weight (13)According to average->Calculating a first calibration factor of the calibration device>；
In S5, the controller controls the driving device to drive the weight mounting frame to move downwards until the first position sensor (9) detects that the first weight (12) is lifted, the second position sensor (10) detects that the second weight (13) is placed on the fixed platform and the second double-head screw column (14) is not contacted with the second weight (13);
after the controller controls the driving device to stop driving the weight mounting frame, the controller (11) reads the measured value of the weighing sensor (3) according to a preset time interval and calculates the average value of the measured value of the mass of the second weight (13)According to average->Calculating a second calibration factor->；
S6, the controller (11) performs the calibration according to the first calibration coefficientAnd a second calibration factor->Judging whether the operation of S2-S5 is qualified or not;
in S7, if the calibration operation of S2-S5 is judged to be qualified, the controller (11) performs the calibration according to the first calibration coefficientAnd a second calibration coefficientObtaining the standard value of the calibration coefficient of the aggregate metering belt scale>And the control display (19) displays the standard value of the calibration coefficient +.>。
3. The method of calibrating an aggregate metering belt balance of claim 1, wherein the nominal diameters of the first stud (15) and the second stud (14) are equal.
4. The calibration method of the aggregate metering belt balance according to claim 1, wherein the middle part of the beam (17) is in shaft connection with the output end of the driving device, so that the beam (17) can freely rotate along the shaft connection on a vertical plane.
5. The calibration method of the aggregate metering belt balance according to claim 1, wherein the first longitudinal connecting rod (16-1) and the second longitudinal connecting rod (16-2) are connected with a transverse connecting rod (18) for preventing the first weight (12) and the second weight (13) from rotating, and gaps are reserved between the transverse connecting rod (18) and the first weight (12) and between the transverse connecting rod and the second weight (13).
6. The calibration method of the aggregate metering belt balance according to claim 5, wherein the detection point of the first position sensor (9) is positioned in the plane of the upper surface of the first weight (12); the detection point of the second position sensor (10) is positioned in the plane of the upper surface of the second weight (13).
7. The method for calibrating the aggregate metering belt balance according to claim 1, wherein the driving device comprises a motor (7) and a screw lifter (8), an output shaft of the motor (7) is connected with an input shaft of the screw lifter (8), the motor (7) and the screw lifter (8) are fixedly arranged on the supporting device, an axis of a screw of the screw lifter (8) is in a vertical state and is perpendicular to an output shaft of the motor (7), a screw axis of the screw lifter (8) is coaxial with a weighing direction of the weighing sensor (3), and a lower end of a screw of the screw lifter (8) is connected with the weight assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910457659.2A CN110108344B (en) | 2019-05-29 | 2019-05-29 | Aggregate metering belt scale calibration device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910457659.2A CN110108344B (en) | 2019-05-29 | 2019-05-29 | Aggregate metering belt scale calibration device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110108344A CN110108344A (en) | 2019-08-09 |
| CN110108344B true CN110108344B (en) | 2024-04-02 |
Family
ID=67492830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910457659.2A Active CN110108344B (en) | 2019-05-29 | 2019-05-29 | Aggregate metering belt scale calibration device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110108344B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984176A (en) * | 2021-11-01 | 2022-01-28 | 深圳市乐福衡器有限公司 | Electronic scale weighing and testing equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392238Y (en) * | 2009-04-02 | 2010-01-27 | 徐州市三原技术产业有限公司 | Dynamic self-calibration and hang-weight device of electronic belt scale |
| CN103115664A (en) * | 2013-01-30 | 2013-05-22 | 西安交通大学 | Automatic calibration device for electronic balances |
| CN203069260U (en) * | 2013-01-30 | 2013-07-17 | 西安交通大学 | Electronic balance calibration device |
| CN103512647A (en) * | 2013-01-22 | 2014-01-15 | 山西长治维特衡器有限公司 | Device for verifying hanging weight of belt weigher |
| CN203519141U (en) * | 2013-10-14 | 2014-04-02 | 常州艾克瑞特衡器有限公司 | Work station for calibration, linear detection, and repeatability detection of counter scale |
| CN204854945U (en) * | 2015-07-29 | 2015-12-09 | 成都太微电子科技有限公司 | Calibration arrangement for be used for weighing module |
| CN105571775A (en) * | 2014-10-10 | 2016-05-11 | 黑龙江华安精益计量技术研究院有限公司 | Dynamic force calibrating method |
| CN107271019A (en) * | 2017-07-21 | 2017-10-20 | 山东钢铁集团日照有限公司 | A kind of belt scale weight method of calibration of equivalent physical goods inspection |
| CN107884057A (en) * | 2017-11-22 | 2018-04-06 | 苏州市计量测试研究所 | The automatic add load control of counterweight for electronic crane scale detection means |
| CN108469296A (en) * | 2018-02-11 | 2018-08-31 | 苏州市计量测试研究所 | A kind of electronic crane scale automatic detection device |
| CN209992063U (en) * | 2019-05-29 | 2020-01-24 | 甘肃路桥建设集团有限公司 | Calibration device for aggregate metering belt weigher |
-
2019
- 2019-05-29 CN CN201910457659.2A patent/CN110108344B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392238Y (en) * | 2009-04-02 | 2010-01-27 | 徐州市三原技术产业有限公司 | Dynamic self-calibration and hang-weight device of electronic belt scale |
| CN103512647A (en) * | 2013-01-22 | 2014-01-15 | 山西长治维特衡器有限公司 | Device for verifying hanging weight of belt weigher |
| CN103115664A (en) * | 2013-01-30 | 2013-05-22 | 西安交通大学 | Automatic calibration device for electronic balances |
| CN203069260U (en) * | 2013-01-30 | 2013-07-17 | 西安交通大学 | Electronic balance calibration device |
| CN203519141U (en) * | 2013-10-14 | 2014-04-02 | 常州艾克瑞特衡器有限公司 | Work station for calibration, linear detection, and repeatability detection of counter scale |
| CN105571775A (en) * | 2014-10-10 | 2016-05-11 | 黑龙江华安精益计量技术研究院有限公司 | Dynamic force calibrating method |
| CN204854945U (en) * | 2015-07-29 | 2015-12-09 | 成都太微电子科技有限公司 | Calibration arrangement for be used for weighing module |
| CN107271019A (en) * | 2017-07-21 | 2017-10-20 | 山东钢铁集团日照有限公司 | A kind of belt scale weight method of calibration of equivalent physical goods inspection |
| CN107884057A (en) * | 2017-11-22 | 2018-04-06 | 苏州市计量测试研究所 | The automatic add load control of counterweight for electronic crane scale detection means |
| CN108469296A (en) * | 2018-02-11 | 2018-08-31 | 苏州市计量测试研究所 | A kind of electronic crane scale automatic detection device |
| CN209992063U (en) * | 2019-05-29 | 2020-01-24 | 甘肃路桥建设集团有限公司 | Calibration device for aggregate metering belt weigher |
Non-Patent Citations (1)
| Title |
|---|
| 杨振顺.《锅炉节能仪表的原理、使用与维修》.人民交通出版社,1988,215. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110108344A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201413188Y (en) | Multiple-conveyer connection material circulating type multifunctional belt scale automatic check system | |
| CN204666090U (en) | A kind of comprehensive strain monitoring system being applicable to builder's jack | |
| CN209992063U (en) | Calibration device for aggregate metering belt weigher | |
| CN200958967Y (en) | Material inspector for electronic belt balance | |
| CN110108344B (en) | Aggregate metering belt scale calibration device and method | |
| CN101655388B (en) | On-line calibration primary-secondary belt balance and method | |
| CN113324640B (en) | Minimum discriminating force detection device and method for large electronic hanging scale | |
| CN111623858B (en) | Quantitative sampling device for civil engineering experiments and application method thereof | |
| CN209541889U (en) | A kind of mobile actual material calibration device of belted electronic balance | |
| CN106153248A (en) | A kind of high accuracy static three-dimensional force sensor caliberating device | |
| CN203443659U (en) | Bunker scale with horizontal detection and adjustment device | |
| CN104748819A (en) | Cold material bin flow measuring device and method for asphalt mixture mixing plant | |
| CN106017660B (en) | A kind of large-tonnage substitution counterweight calibration calibrating installation | |
| CN2692654Y (en) | Hand pulling pressing spring measurer | |
| CN2185430Y (en) | Calibrator for belt weighing apparatus | |
| CN211954643U (en) | Simulation test device for bow-shaped plate torque limiter | |
| CN208398836U (en) | A kind of carbon block on-line measurement device | |
| CN2624186Y (en) | Nucleon scale real object scaler | |
| CN204514442U (en) | Asphalt mixing plant cold burden storehouse flow rate-measuring device | |
| CN219694099U (en) | PC steel bar length measuring device | |
| CN212254295U (en) | Sand material weighing device for building industry | |
| CN213422394U (en) | Calibration device for material tank weighing scale by pressure loading method | |
| CN114812762B (en) | High-precision belt scale conveying belt detection device system and method | |
| CN219675271U (en) | Automatic weight hanging mechanism for belt scale | |
| CN220080124U (en) | Full-automatic static load tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |