CN-116793469-B - Online calibrating device of matrix belt conveyor scale

CN116793469BCN 116793469 BCN116793469 BCN 116793469BCN-116793469-B

Abstract

The invention relates to an on-line calibration device of a matrix belt scale, which comprises a V-shaped bracket, an inner hexagon bolt, a locknut, a fastening screw, an electric push rod, an upper clamping cover, a fastening screw, a lower clamping cover, a clamping screw, an adjusting screw, a positioning bracket, an adjusting pad, a circuit breaker, a 24V stabilized power supply, an ascending contactor and a descending contactor, wherein the bottom surface of the electric push rod is placed into the lower clamping cover, the electric push rod is fixedly connected with the lower clamping cover by the inner hexagon bolt, the upper clamping cover is sleeved in the electric push rod, the upper and lower clamping covers are fixed by 7 fastening screw nuts, the fastening screw is screwed into a threaded hole of the upper clamping cover and is screwed down, the V-shaped bracket is sleeved outside the upper and lower clamping covers, the V-shaped bracket is fixedly connected with a piston rod of the electric push rod by the inner hexagon bolt, and the circuit breaker, the 24V stabilized power supply, the ascending contactor and the descending contactor are connected into a control loop by the electric push rod. The scheme has low manufacturing cost, realizes automatic operation, saves calibration time and ensures calibration accuracy.

Inventors

QI MINGHU
ZHANG CHAO
WANG GUOBING
HE PENGFEI
HU QIUYAN

Assignees

上海梅山钢铁股份有限公司

Dates

Publication Date: 20260505
Application Date: 20220313

Claims (5)

1. The calibration method of the online calibration device of the matrix belt scale is characterized in that the calibration device comprises a V-shaped bracket, an inner hexagon bolt, a locknut, a fastening screw, an electric push rod, an upper clamping cover, a fastening screw, a lower clamping cover, a clamping screw, an adjusting screw, a positioning bracket, an adjusting pad, a circuit breaker, a 24V stabilized power supply, an ascending contactor and a descending contactor, wherein the bottom surface of the electric push rod is placed into the lower clamping cover, the electric push rod is tightly connected with the lower clamping cover by the inner hexagon bolt, the upper clamping cover is sleeved in the electric push rod, the upper clamping cover and the lower clamping cover are fixed by 7 fastening screw nuts, the fastening screw is screwed into a threaded hole of the upper clamping cover and is screwed up, the V-shaped bracket is sleeved outside the upper clamping cover and the lower clamping cover, the inner hexagon bolt is used for tightly connecting the V-shaped bracket with a piston rod of the electric push rod, and the circuit breaker, the 24V stabilized power supply, the ascending contactor and the descending contactor are connected with the electric push rod to form a control loop, and the calibration process is as follows: Step 1, inserting the socket of the positioning bracket of the online calibration device into two measuring steel frames, then installing a clamping bolt without tightening, Step 2, moving the online calibration device to enable the positioning support to move on the metering steel frame, aligning the center of a V-shaped opening of the V-shaped support with the center of the upper hanging code, and meeting the straightness less than or equal to 0.10mm; Step 3, placing the level bar on the upper plane of the positioning bracket, screwing in four adjusting bolts, screwing in or unscrewing the adjusting bolts to ensure that the parallelism between the bearing surface of the positioning bracket and the metering steel frame is less than or equal to 0.2mm, and ensuring that the perpendicularity between the positioning bracket and the metering steel frame is less than or equal to 0.15mm; step 4, fastening clamping bolts to enable the calibrating device to be fastened on the metering steel frame, fastening and locking the installation gap by the clamping force of the four adjusting bolts, and finishing the installation and adjustment of the online calibrating device at one side; Step 5, installing and adjusting an on-line calibration device of the metering steel frame at the other side according to the method, and reaching the specified precision requirement, Step 6, connecting two electric push rod power supplies, long-pressing the ascending button, ascending the two V-shaped brackets, enabling the V-shaped opening to be in contact with the surface of the hanging code, lifting the hanging code, separating the hanging code from the hanging code brackets and generating a gap, Step 7, measuring and recording gaps between two ends of the hanging code and the hanging code brackets by using a feeler gauge, then pressing down a descending button for a long time, descending and resetting two V-shaped brackets of the on-line calibrating device, placing two ends of the hanging code on the two hanging code brackets, preassembling a hanging code on-line calibrating device, Step 8, loosening the fastening bolts of the two lifting devices, placing the adjusting pad on the bearing surfaces of the two positioning brackets, then fastening the bolts, Step 9, long-pressing the ascending key, extending the two V-shaped brackets, lifting the hanging code, measuring the separation gap between the two sides of the hanging code and the contact part of the hanging code bracket by using a feeler gauge, and if the separation gap is not in accordance with the specification, repeating the steps 6-9 to ensure the separation gap, resetting the on-line calibration device by pressing the descending key, and realizing the hanging code on the hanging code bracket; Step 10, long pressing the ascending button again to hang the code, lifting and setting the top, placing the level bar in the middle position of the hanging code, adjusting the levelness of the hanging code, determining the low side of the hanging code, taking down the level bar, pressing the descending button to hang the code for implementation, resetting the two lifting devices, Step 11, loosening the fastening bolt, detaching the low-side lifting device, adding an adjusting pad on the bearing surface of the positioning bracket, then reinstalling the lifting device to fasten the bolt, lifting the hanging code, placing the level bar at the original measuring position of the hanging code for measurement, ensuring the levelness of the hanging code to be between 0.8 and 1.5mm, repeating the process until the levelness requirement is met, Step 12, after the on-line automatic calibration device of the pair of matrix belt scales is installed and the precision is adjusted, other on-line calibration devices are installed and the precision is adjusted in place according to the method, and an electric push rod is connected to the terminals of the ascending and descending keys in series to control the on-line calibration devices to ascend and descend synchronously; step 13, when calibrating, the lifting mechanism of the online calibrating device is at the initial position, namely the V-shaped bracket and the hanging code have larger gap, the measuring steel frame is not loaded, the belt scale is started to adjust zero position, Step 14, when zero adjustment is finished, the lifting key is pressed for a long time, the lifting mechanism of the online calibration device is lifted out, the V-shaped bracket is lifted to hang the code, the hanging code is separated from the hanging code bracket, the weighing sensor is loaded by the metering steel frame, the belt scale ballast calibration is started, And 15, after the ballast calibration of the belt scale is finished, long-pressing a descending button, retracting a descending mechanism of the online calibration device, compacting the hanging code on the hanging code support, separating the hanging code from a lifting mechanism of the online calibration device, and stopping the operation of the belt scale after the calibration operation is finished.
2. The calibration method of the online calibration device of the matrix belt scale according to claim 1, wherein the fastening bolts of the upper clamping cover and the lower clamping cover are firmly connected, and the piston rod of the electric push rod is in clearance with the through hole of the upper clamping cover.
3. The calibration method of the online calibration device of the matrix belt conveyor scale according to claim 2, wherein the opening degree of the jack of the positioning bracket is controlled to be 1-1.5mm.
4. A calibration method for an online calibration device of a matrix belt scale according to claim 3, wherein the V-shaped bracket of the online calibration device has a prescribed linearity with the center of the circular hanging code, and is determined by the position of the positioning bracket on the metering steel frame.
5. The method for calibrating an online calibration device for a matrix belt scale as claimed in claim 4, wherein, The calibration device is installed as follows: step 1, placing the bottom surface of an electric push rod into a lower clamping cover, and fixedly connecting the electric push rod with the lower clamping cover by using an inner hexagon bolt; step 2, sleeving an upper clamping cover into the electric push rod, sleeving a large hole of the upper clamping cover on a convex part of a piston of the electric push rod, Step 3, fixing the upper and lower clamping covers by 7 fastening bolts and nuts, screwing the fastening screws into threaded holes of the upper clamping covers and tightening; step 4, fastening the lockbolts at one side of the upper and lower clamping covers, Step 5:V, sleeving the V-shaped bracket on the outer sides of the upper clamping cover and the lower clamping cover, using an inner hexagon bolt to fasten the V-shaped bracket and the electric push rod piston rod, Step 6, the lifting mechanism in the step 5 is assembled, Step 7, placing the assembled bottom plane of the lifting mechanism on a bearing plane of the positioning bracket, and fastening by bolts; Step 8, screwing the clamping bolt and the adjusting bolt on the plane threaded hole and the through hole on the socket of the positioning bracket; Step 9, finishing the offline assembly of the matrix belt scale on-line calibration device; and 10, connecting the circuit breaker, the 24V stabilized power supply, the ascending contactor and the descending contactor with the electric push rod to form a control loop.

Description

Online calibrating device of matrix belt conveyor scale Technical Field The invention relates to a calibration device, in particular to an on-line calibration device for a matrix belt scale, and belongs to the technical field of metering of automobile scales. Background The most mobile of fine materials today is belt transport, and these materials are metered by matrix belt scales. The weighing structure of the balance is a group of weighing platform composed of a balance body steel frame, a weight hanging bracket, a weighing sensor, a metering steel frame, a carrier roller frame, a protective cover and other parts, and the weighing precision is +/-0.5%. The matrix belt scale is formed by connecting 4-5 weighing scale platforms, 16-20 circular hanging codes are all needed to be manually conveyed for each calibration, the hanging codes are conveyed from the placement position to the calibration position, and then conveyed to the placement position after the completion, so that manpower and material resources are wasted, certain potential safety hazards are caused, and the transportation weighing efficiency is reduced. Therefore, a new solution is urgently needed to solve the above technical problems. Disclosure of Invention The invention aims at the problems existing in the prior art, and provides an online calibration device for a matrix belt scale. In order to achieve the above purpose, the technical scheme of the invention is that the online calibration device of the matrix belt scale is characterized in that the online calibration device comprises a V-shaped bracket 1, an inner hexagon bolt 2, a locknut 3, a fastening screw 4, an electric push rod 5, an upper clamping cover 6, a fastening bolt 7, a lower clamping cover 8, a clamping bolt 9, an adjusting bolt 10, a positioning bracket 11, an adjusting pad 12, a circuit breaker 13,24V, a stabilized voltage supply 14, an ascending contactor 15 and a descending contactor 16, wherein the bottom surface of the electric push rod is placed in the lower clamping cover, the electric push rod is fixedly connected with the lower clamping cover by the inner hexagon bolt, the upper clamping cover is sleeved in the electric push rod, the upper clamping cover and the lower clamping cover are fixed by 7 fastening bolts and nuts, the fastening screw is screwed into a threaded hole of the upper clamping cover and is screwed down, the V-shaped bracket is sleeved outside the upper clamping cover and the lower clamping cover, the V-shaped bracket is fixedly connected with a piston rod of the electric push rod by the inner hexagon bolt, and the circuit breaker, and the 24V stabilized voltage supply, the ascending contactor and the descending contactor are connected with the electric push rod into a control loop. As an improvement of the invention, the fastening bolts of the upper and lower clamping covers are firmly connected, and the piston rod of the electric push rod is in clearance with the through hole of the upper clamping cover. Cannot be rubbed back, and damages the piston rod. As an improvement of the invention, the opening degree of the socket of the positioning bracket is controlled to be 1-1.5mm, so that the adjustment of the levelness of the hanging code is prevented from being influenced. The positioning support is a welding piece, and the perpendicularity and parallelism are controlled as much as possible by processing. As an improvement of the invention, the V-shaped bracket and the circular hanging code center of the on-line calibration device have specified straightness and are determined by the position of the positioning bracket on the metering steel frame. As an improvement of the invention, the calibration device is installed as follows: step 1, placing the bottom surface of an electric push rod into a lower clamping cover, and fixedly connecting the electric push rod with the lower clamping cover by using an inner hexagon bolt; step 2, sleeving an upper clamping cover into the electric push rod, sleeving a large hole of the upper clamping cover on a convex part of a piston of the electric push rod, Step 3, fixing the upper and lower clamping covers by 7 fastening bolts and nuts, screwing the fastening screws into threaded holes of the upper clamping covers and tightening; step 4, fastening the lockbolts at one side of the upper and lower clamping covers, Step 5:V, sleeving the V-shaped bracket on the outer sides of the upper clamping cover and the lower clamping cover, using an inner hexagon bolt to tightly connect the V-shaped bracket with the piston rod of the electric push rod, Step 6, the lifting mechanism in the step 5 is assembled, Step 7, placing the assembled bottom plane of the lifting mechanism on a bearing plane of the positioning bracket, and fastening by bolts; Step 8, screwing the clamping bolt and the adjusting bolt on the plane threaded hole and the through hole on the socket of the positioning bracket; Step 9, finishing the offline assem