CN103090956B - Automatic pressure preloading equipment and method of weighing force measuring sensor - Google Patents
Automatic pressure preloading equipment and method of weighing force measuring sensor Download PDFInfo
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- CN103090956B CN103090956B CN201310030638.5A CN201310030638A CN103090956B CN 103090956 B CN103090956 B CN 103090956B CN 201310030638 A CN201310030638 A CN 201310030638A CN 103090956 B CN103090956 B CN 103090956B
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Abstract
The invention discloses automatic pressure preloading equipment and a method of a weighing force measuring sensor. The automatic pressure preloading equipment of the weighing force measuring sensor comprises a pressure preloading device and a pressure preloading control system, wherein the pressure preloading device comprises a machine frame, a motion mechanism of a weighing force measuring sensor to be measured and a motion mechanism of a standard weighing force measuring sensor, and the pressure preloading control system comprises an industrial control computer, a data collection card, a bar code scanner, a standard pressure measuring meter, a measuring meter of pressure to be measured, a motor control switch and a motor driver. The method comprises steps of (1) parameter initializing; (2) clamping and arranging of the weighing force measuring sensor to be measured; (3) pressure loading of the weighing force measuring sensor to be measured; (4) pressure unloading of the weighing force measuring sensor to be measured; (5) repeating from step two to step four until reaching the required pressure preloading times; (6) unloading of the weighing force measuring sensor to be measured. The automatic pressure preloading equipment and the method of the weighing force measuring sensor can improve measuring quality, improve production efficiency, reduce labor intensity, achieve low cost, and are high in working reliability, strong in practical applicability and high in popularization application value.
Description
Technical field
The invention belongs to Intelligent Measurement technical field, especially relate to a kind of weighing and force-measuring transducer automatic pressure and preload Apparatus and method for.
Background technology
Weighing and force-measuring transducer is a kind of sensor the most conventional in industrial practice, it is widely used in various industrial automatic control environment, relates to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline.
Weighing and force-measuring transducer needs to carry out repeatedly different detections in process of production, wherein static properties test is a crucial detection, this link needs the performance index of testing sensor to have: output at zero point, Full-span output, nonlinearity, sluggish, repeatability, degree of accuracy, sensitivity, zero point drift, 9 of overload etc.Static properties test need to be placed in tested sensor under the identical mechanical condition of true application, and this process of the test is referred to as " sensor preload process ", provides the mechanism of test condition to be referred to as the equipment that preloads.
Due to the singularity of electrical measurement product industry, and comparatively harsh to test condition, and testing apparatus needs special research and development.At present, Vishay measures the transregional company that group, HBM company are representative, independent research relevant ATE (automatic test equipment), production automation degree is higher, product quality, technology are always in advanced in the world.But the not patent protection of application response at home.More domestic mid and low-end products manufacturers, utilize motorisation unit, and control procedure completes by manual operation, depend on the competitive power that cheap labor cost exchanges market for, static properties test fails to realize robotization, so product test quality is unstable, and testing efficiency is low
The technical problem underlying existing at present:
(1) product clamps problem: existing preloading equipment depends on manual operations to product clamping, uninstall process, the pressure bearing due to tested sensor is larger, and require accurate positioning, reliable and stable, utilize at present 8 screws to be fixed product to be measured, location is by manual setting, and precision is controlled according to workman's experience.Therefore, manual clamping test product holding time is longer, and testing efficiency is low, and labour intensity is large.
(2) pressure-loaded problem: the pressure reloaded of small-range sensor, utilize lifting jack hand-manipulated to realize, loading velocity is slow, and labour intensity is large.The pressure reloaded of sensors of large measurement range realizes by hydraulic system, and workman manually controls hydraulic valve, and the control of a certain definite pressure is needed to veteran workman's operation, and artificial carelessness can cause overvoltage to load, and causes damage of product probability to raise.In addition, easily there is leakage of oil in hydraulically operated equipment (HOE), pollutes worktable.
(3) the output data of tested sensor and standard transducer, by visual inspection pressure-measuring device, then with paper and pen, it is carried out to record, and only recorded need test " repeatability " and " zero point drift " required data, the test of 7 indexs of residue is left in the basket, this is unfavorable for the monitoring to product quality, is also unfavorable for that follow-up test link reviews the grasp of this product detailed performance and data.
(4) the above-mentioned feature that exists, makes the labor strength of bulk article test larger, and according to investigations, each workman product number that completes static properties test average per hour is 6, and for the amount of finishing the work, workman must work more than 10 hours every day.In addition, according to manufacturer, introduce, owing to lacking effectively supervision, exist workman to fabricate test data and omit test step phenomenon and occur, thereby cause some performance deficiency of product not to be found, cause follow-up unnecessary continuation processing and cost waste.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of compact conformation, novel in design rationally, use simple operation, can improve weighing and force-measuring transducer product test mass, enhance productivity, reduce labour intensity, realize the weighing and force-measuring transducer automatic pressure that cost is low and preload equipment.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg, be arranged on the lower shoe at supporting leg top, be disposed on the first guide pillar and the second guide pillar on lower shoe, and the entablature that is arranged on the first guide pillar and the second guide pillar top, described the first guide pillar and the second guide pillar are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises that the first screw-threaded shaft elevator being arranged on lower shoe is connected with the first screw-threaded shaft elevator and the first motor for driving the first screw-threaded shaft elevator to move, on described the first screw-threaded shaft elevator, be connected with the first leading screw, the top of described the first leading screw is provided with the movable table can be under the drive of the first leading screw moving up and down along the first guide pillar and the second guide pillar, the both sides of described movable table are respectively arranged with the first guide pin bushing matching with the first guide pillar and the second guide pin bushing matching with the second guide pillar, the top of described movable table is provided with clamp of sensor, the top of described clamp of sensor has for the installation of sensors groove of weighing and force-measuring transducer to be measured is installed, described standard weighing and force-measuring transducer motion comprises that the second screw-threaded shaft elevator being arranged on entablature is connected with the second screw-threaded shaft elevator and the second motor for driving the second screw-threaded shaft elevator to move, on described the second screw-threaded shaft elevator, be connected with the second leading screw, on described entablature, be connected with the fixed leg stretching out downwards, the bottom of described fixed leg is fixedly connected with that being useful on matches with described clamp of sensor and is fixedly clamped the fixed head of described weighing and force-measuring transducer to be measured, the bottom of described the second leading screw is provided with sensor connector, the bottom of described sensor connector is connected with standard weighing and force-measuring transducer, the pre-borne control system of described pressure comprises industrial control computer and the data collecting card joining with described industrial control computer, bar code scanner, normal pressure measuring instrument and testing pressure measuring instrument, described in each, on weighing and force-measuring transducer to be measured, be all pasted with the bar code that storage inside has the test parameter of weighing and force-measuring transducer to be measured, the signal input part of the signal output part of described standard weighing and force-measuring transducer and described normal pressure measuring instrument joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured and described testing pressure dynamometer joins, on described data collecting card, be connected to for the first guide pin bushing being moved downward to the first limit switch that extreme position detects, for the second guide pin bushing is moved downward to the second limit switch that extreme position detects, for motor control switch and the motor driver for the second motor is driven that the action of the first motor is controlled, described the first limit switch is arranged on the bottom of described the first guide pin bushing, described the second limit switch is arranged on the bottom of described the second guide pin bushing, described motor control switch is connected in the current supply circuit of the first motor, on described the first motor, be provided with the current detection circuit module for the electric current of described the first motor is detected, described current detection circuit module and described motor control switch join, described the second motor and described motor driver join.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described lower shoe is fixedly connected on described supporting leg top by screw, the upper and lower of the upper and lower of described the first guide pillar and described the second guide pillar is provided with external thread, is provided with for the first threaded hole of described the first guide pillar that is threaded with for the second threaded hole of described the second guide pillar that is threaded on described entablature and lower shoe.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described the first screw-threaded shaft elevator is fixedly connected on described lower shoe by the first screw-threaded shaft elevator base, the output shaft of described the first motor is connected with the input shaft of described the first screw-threaded shaft elevator by the first shaft coupling, and the side of described supporting leg is fixedly connected with and is useful on the first motor cabinet that described the first motor is installed; The top of described the first leading screw is fixedly connected with the bottom of described movable table by leading screw joint flange, and the place, centre position, bottom of described movable table is provided with a plurality of for be fixedly connected with the 3rd threaded hole of described leading screw joint flange by screw; Two side roof parts of described movable table be respectively arranged with a plurality of for the 4th threaded hole that is fixedly connected with described the first guide pin bushing by screw with a plurality of for be fixedly connected with the 5th threaded hole of described the second guide pin bushing by screw; The crown center position of described movable table is provided with a plurality of for be fixedly connected with the 6th threaded hole of described clamp of sensor by screw, and the bottom of described clamp of sensor is provided with the 9th threaded hole matching with the 6th threaded hole.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described the second screw-threaded shaft elevator is fixedly connected on described entablature by the second screw-threaded shaft elevator base, the output shaft of described the second motor is connected with the input shaft of described the second screw-threaded shaft elevator by the second shaft coupling, and described entablature top is fixedly connected with and is useful on the second motor cabinet that described the second motor is installed.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: the upper and lower of described fixed leg is provided with external thread, on described entablature, be provided with the 7th threaded hole for the described fixed leg that is threaded, on described fixed head, be provided with the 8th threaded hole for the described fixed leg that is threaded; Described sensor connector is fixedly connected with the bottom of described the second leading screw by screw, and described standard weighing and force-measuring transducer is fixedly connected with the bottom of described sensor connector by screw.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described the first motor is alternating current generator.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described the second screw-threaded shaft elevator is ball screw type elevator.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described the second motor is servomotor, and described motor driver is motor servo driver.
Above-mentioned weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: described pressure preloads set-up of control system in pressure preloads switch board, and described pressure preloads switch board and is arranged on described supporting leg side, and described motor control switch is relay.
The present invention also provides the weighing and force-measuring transducer automatic pressure that a kind of automaticity is high, data processing speed is fast, precision is high, functional reliability is high pre-support method, it is characterized in that the method comprises the following steps:
Step 1, parameter initialization: adopt described bar code scanner to read the pressure test parameter of the weighing and force-measuring transducer to be measured being stored in bar code, and the pressure test parameter reading is uploaded to industrial control computer in real time, and by operation industrial control computer, pressure test parameter is carried out to initialization setting;
Step 2, weighing and force-measuring transducer to be measured clamps: first, manually weighing and force-measuring transducer to be measured is arranged in installation of sensors groove, then, by operation industrial control computer, the forward control signal of input to the first motor, industrial control computer is transferred to motor control switch by described action control signal by data collecting card, control motor control switch and connect the current supply circuit of the first motor, the first motor drives the first screw-threaded shaft elevator to drive the first leading screw up, the first leading screw drives movable table, clamp of sensor and weighing and force-measuring transducer to be measured move upward, current detection circuit module detects and exports to motor control switch in real time to the electric current of the first motor, when the current value detecting surpasses the current value that motor control switch allows to pass through, motor control switch disconnects the current supply circuit of the first motor, the first motor stops forward, the first screw-threaded shaft elevator is in self-locking state, now, weighing and force-measuring transducer to be measured has been installed between fixed head and clamp of sensor,
Step 3, weighing and force-measuring transducer pressure-loaded to be measured: first, described industrial control computer detects the state of motor control switch by data collecting card, after described motor control switch being detected and having disconnected, described industrial control computer respectively carries out zero clearing calibration operation one time to described normal pressure measuring instrument and testing pressure measuring instrument, after zero clearing calibration finishes, normal pressure measuring instrument reads standard weighing and force-measuring transducer initial value and is transferred to industrial control computer, testing pressure measuring instrument reads weighing and force-measuring transducer initial value to be measured and is transferred to industrial control computer, then, by operation industrial control computer, the forward control signal of input to the second motor, industrial control computer is transferred to motor driver by described forward control signal by data collecting card, motor driver drives the second motor forward, the second motor drives the second screw-threaded shaft elevator descending, the second screw-threaded shaft elevator drives the second leading screw descending, the second leading screw drives sensor connector and standard weighing and force-measuring transducer to move downward, normal pressure measuring instrument reads in real time the force value that standard weighing and force-measuring transducer detects and is transferred to industrial control computer, testing pressure measuring instrument reads in real time the force value that weighing and force-measuring transducer to be measured detects and is transferred to industrial control computer, industrial control computer carries out analyzing and processing to the pressure data of normal pressure measuring instrument and testing pressure measuring instrument real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, according to comparative result, export corresponding the second motor speed control signal, and be transferred to motor driver by data collecting card, motor driver drives the second motor forward according to described the second motor speed control signal, when standard weighing and force-measuring transducer moves downward while touching described weighing and force-measuring transducer to be measured, started pressure-loaded process, described standard weighing and force-measuring transducer and weighing and force-measuring transducer to be measured have been subject to identical pressure, normal pressure measuring instrument reads in real time the force value that standard weighing and force-measuring transducer detects and is transferred to industrial control computer, testing pressure measuring instrument reads in real time the force value that weighing and force-measuring transducer to be measured detects and is transferred to industrial control computer, industrial control computer carries out analyzing and processing to the pressure data of normal pressure measuring instrument and testing pressure measuring instrument real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, when the pressure data of real-time Transmission equates with the pressure test parameter arranging in step 1, industrial control computer is exported the second motor and is stopped action control signal, and be transferred to motor driver by data collecting card, motor driver stops driving the second motor forward, the second screw-threaded shaft elevator is in self-locking state, keep after a period of time, industrial control computer reads record to the pressure data of normal pressure measuring instrument and testing pressure measuring instrument real-time Transmission,
Step 4, weighing and force-measuring transducer discharge degree to be measured: recorded after pressure data when industrial control computer reads, industrial control computer is exported the control signal of the second motor reversal certain angle, and be transferred to motor driver by data collecting card, motor driver drives the second motor reversal, the second motor drives the second screw-threaded shaft elevator up, the second screw-threaded shaft elevator drives the second leading screw up, the second leading screw drives sensor connector and standard weighing and force-measuring transducer to move upward, when the second motor reversal is during to certain angle, the lower end of described standard weighing and force-measuring transducer separates completely with described weighing and force-measuring transducer to be measured, now, described industrial control computer reads record to the pressure data of normal pressure measuring instrument and testing pressure measuring instrument real-time Transmission, then, described industrial control computer respectively carries out one time zero clearing calibration operation again to described normal pressure measuring instrument and testing pressure measuring instrument, after zero clearing calibration finishes, described industrial control computer reads record to the pressure data of normal pressure measuring instrument and testing pressure measuring instrument real-time Transmission again,
Step 5, repeating step two, to step 4, have reached the preloading number of times of weighing and force-measuring transducer required pressure to be measured until pressure preloads number of times;
Step 6, weighing and force-measuring transducer to be measured is removed stage makeup and costume: after pressure preloads and finishes, by operation industrial control computer, the reverse control signal of input to the first motor, industrial control computer is transferred to motor control switch by described reverse control signal by data collecting card, control motor control switch and connect the current supply circuit of the first motor, the first motor drives the first screw-threaded shaft elevator to drive the first leading screw descending, the first leading screw drives movable table, clamp of sensor and weighing and force-measuring transducer to be measured move downward, when the first guide pin bushing moves downward the position that described the first limit switch touches lower shoe, and when the second guide pin bushing moves downward described the second limit switch and touches the position of lower shoe, industrial control computer collects the signal of the first limit switch and the signal of the second limit switch by data collecting card, industrial control computer is exported the first motor and is stopped reverse control signal, and be transferred to motor control switch by data collecting card, control the current supply circuit that motor control switch disconnects the first motor, the first motor stops reversion, the first screw-threaded shaft elevator is in self-locking state, manually weighing and force-measuring transducer to be measured is taken out in installation of sensors groove.
The present invention compared with prior art has the following advantages:
1, weighing and force-measuring transducer automatic pressure of the present invention preloads the compact conformation of equipment, rationally novel in design, convenient processing and manufacture.
2, weighing and force-measuring transducer automatic pressure of the present invention preloads the use simple operation of equipment, and weighing and force-measuring transducer to be measured is quick-clamping, unloading automatically.
3, weighing and force-measuring transducer automatic pressure of the present invention preloads equipment and adopts Mechanical Driven, Automatic Control, compare with existing fluid pressure type prestrain machine, have be quick on the draw, testing efficiency is high, it is little to pollute and the peripheral annex of attaching troops to a unit is few, realize the plurality of advantages such as cost is low.
4, the present invention can realize the accurate location of weighing and force-measuring transducer to be measured and the accurate loading of pressure, has improved static properties measuring accuracy and the reliability of weighing and force-measuring transducer to be measured.
5, the present invention adopts industrial control computer to carry out data collection and administration, having realized automatic test, calculating and the data thereof of weighing and force-measuring transducer static properties test index to be measured manages automatically, avoided the impact of human factor on product quality, and data processing speed is fast, memory data output is large.
6, the present invention can improve the test mass of weighing and force-measuring transducer product, enhances productivity, and reduces labour intensity.
7, the present invention has filled up the blank of prior art, can provide quick testing apparatus for domestic electrical measurement product industry, contributes to enhance productivity, and improves the quality of product, the competitive power of enterprise.
8, of the present invention practical, result of use is good, and application value is high.
In sum, the present invention is rationally novel in design, can improve the test mass of weighing and force-measuring transducer product, enhances productivity, and reduces labour intensity, realizes cost low, and functional reliability is high, practical, and application value is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the front view that weighing and force-measuring transducer automatic pressure of the present invention preloads equipment.
Fig. 2 is the left view that weighing and force-measuring transducer automatic pressure of the present invention preloads equipment.
Fig. 3 is that the master of movable table of the present invention looks cut-open view.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is that the master of clamp of sensor of the present invention looks cut-open view.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the annexation schematic diagram of the pre-borne control system of pressure of the present invention and other each parts.
Fig. 8 is the method flow diagram of the pre-support method of weighing and force-measuring transducer automatic pressure of the present invention.
Description of reference numerals:
1-supporting leg; 2-lower shoe; 3-1-the first guide pillar;
3-2-the second guide pillar; The 4-the first screw-threaded shaft elevator; 5-1-the first guide pin bushing;
5-2-the second guide pin bushing; 6-movable table; 7-fixed head;
8-fixed leg; 9-entablature; The 10-the first leading screw;
The 11-the second motor; The 12-the second motor cabinet; The 13-the second shaft coupling;
The 14-the second screw-threaded shaft elevator; 15-sensor connector;
16-standard weighing and force-measuring transducer; 17-weighing and force-measuring transducer to be measured;
18-clamp of sensor; The 19-the first motor; The 20-the first motor cabinet;
21-installation of sensors groove; The 22-the second leading screw;
The 23-the first screw-threaded shaft elevator base; The 24-the first shaft coupling;
25-leading screw joint flange; The 26-the second screw-threaded shaft elevator base;
27-industrial control computer; 28-data collecting card; 29-bar code scanner;
30-pressure preloads switch board; 31-normal pressure measuring instrument; 32-testing pressure measuring instrument;
33-bar code; The 34-the first limit switch; The 35-the second limit switch;
36-motor control switch; 37-motor driver;
38-current detection circuit module; The 39-the three threaded hole;
The 40-the four threaded hole; The 41-the five threaded hole; The 42-the six threaded hole;
The 43-the nine threaded hole.
Embodiment
As Fig. 1, Fig. 2, Fig. 5, shown in Fig. 6 and Fig. 7, weighing and force-measuring transducer automatic pressure of the present invention preloads equipment, comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg 1, be arranged on the lower shoe 2 at supporting leg 1 top, be disposed on the first guide pillar 3-1 and the second guide pillar 3-2 on lower shoe 2, and the entablature 9 that is arranged on the first guide pillar 3-1 and the second guide pillar 3-2 top, described the first guide pillar 3-1 and the second guide pillar 3-2 are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises that the first screw-threaded shaft elevator 4 being arranged on lower shoe 2 is connected with the first screw-threaded shaft elevator 4 and the first motor 19 for driving the first screw-threaded shaft elevator 4 to move, on described the first screw-threaded shaft elevator 4, be connected with the first leading screw 10, the top of described the first leading screw 10 is provided with the movable table 6 can be under the drive of the first leading screw 10 moving up and down along the first guide pillar 3-1 and the second guide pillar 3-2, the both sides of described movable table 6 are respectively arranged with the first guide pin bushing 5-1 matching with the first guide pillar 3-1 and the second guide pin bushing 5-2 matching with the second guide pillar 3-2, the top of described movable table 6 is provided with clamp of sensor 18, the top of described clamp of sensor 18 has for the installation of sensors groove 21 of weighing and force-measuring transducer 17 to be measured is installed, described standard weighing and force-measuring transducer motion comprises that the second screw-threaded shaft elevator 14 being arranged on entablature 9 is connected with the second screw-threaded shaft elevator 14 and the second motor 11 for driving the second screw-threaded shaft elevator 14 to move, on described the second screw-threaded shaft elevator 14, be connected with the second leading screw 22, on described entablature 9, be connected with the fixed leg 8 stretching out downwards, the bottom of described fixed leg 8 is fixedly connected with that being useful on matches with described clamp of sensor 18 and is fixedly clamped the fixed head 7 of described weighing and force-measuring transducer to be measured 17, the bottom of described the second leading screw 22 is provided with sensor connector 15, the bottom of described sensor connector 15 is connected with standard weighing and force-measuring transducer 16, the pre-borne control system of described pressure comprises industrial control computer 27 and the data collecting card 28 joining with described industrial control computer 27, bar code scanner 29, normal pressure measuring instrument 31 and testing pressure measuring instrument 32, described in each, on weighing and force-measuring transducer 17 to be measured, be all pasted with the bar code 33 that storage inside has the test parameter of weighing and force-measuring transducer 17 to be measured, the signal input part of the signal output part of described standard weighing and force-measuring transducer 16 and described normal pressure measuring instrument 31 joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured 17 and described testing pressure dynamometer 32 joins, on described data collecting card 28, be connected to for the first guide pin bushing 5-1 being moved downward to the first limit switch 34 that extreme position detects, for the second guide pin bushing 5-2 is moved downward to the second limit switch 35 that extreme position detects, for motor control switch 36 and the motor driver 37 for the second motor 11 is driven that the action of the first motor 19 is controlled, described the first limit switch 34 is arranged on the bottom of described the first guide pin bushing 5-1, described the second limit switch 35 is arranged on the bottom of described the second guide pin bushing 5-2, described motor control switch 36 is connected in the current supply circuit of the first motor 19, on described the first motor 19, be provided with the current detection circuit module 38 for the electric current of described the first motor 19 is detected, described current detection circuit module 38 is joined with described motor control switch 36, described the second motor 11 joins with described motor driver 37.
As depicted in figs. 1 and 2, in the present embodiment, described lower shoe 2 is fixedly connected on described supporting leg 1 top by screw, the upper and lower of the upper and lower of described the first guide pillar 3-1 and described the second guide pillar 3-2 is provided with external thread, is provided with for the first threaded hole of described the first guide pillar 3-1 that is threaded with for the second threaded hole of described the second guide pillar 3-2 that is threaded on described entablature 9 and lower shoe 2.
In the present embodiment, described the first screw-threaded shaft elevator 4 is fixedly connected on described lower shoe 2 by the first screw-threaded shaft elevator base 23, the output shaft of described the first motor 19 is connected with the input shaft of described the first screw-threaded shaft elevator 4 by the first shaft coupling 24, and the side of described supporting leg 1 is fixedly connected with and is useful on the first motor cabinet 20 that described the first motor 19 is installed; In conjunction with Fig. 3 and Fig. 4, the top of described the first leading screw 10 is fixedly connected with the bottom of described movable table 6 by leading screw joint flange 25, and the place, centre position, bottom of described movable table 6 is provided with a plurality of for be fixedly connected with the 3rd threaded hole 39 of described leading screw joint flange 25 by screw; Two side roof parts of described movable table 6 be respectively arranged with a plurality of for the 4th threaded hole 40 that is fixedly connected with described the first guide pin bushing 5-1 by screw with a plurality of for be fixedly connected with the 5th threaded hole 41 of described the second guide pin bushing 5-2 by screw; The crown center position of described movable table 6 is provided with a plurality of for be fixedly connected with the 6th threaded hole 42 of described clamp of sensor 18 by screw, in conjunction with Fig. 5 and Fig. 6, the bottom of described clamp of sensor 18 is provided with the 9th threaded hole 43 matching with the 6th threaded hole 42.
In the present embodiment, described the second screw-threaded shaft elevator 14 is fixedly connected on described entablature 9 by the second screw-threaded shaft elevator base 26, the output shaft of described the second motor 11 is connected with the input shaft of described the second screw-threaded shaft elevator 14 by the second shaft coupling 13, and described entablature 9 tops are fixedly connected with and are useful on the second motor cabinet 12 that described the second motor 11 is installed.
In the present embodiment, the upper and lower of described fixed leg 8 is provided with external thread, on described entablature 9, be provided with the 7th threaded hole for the described fixed leg 8 that is threaded, on described fixed head 7, be provided with the 8th threaded hole for the described fixed leg 8 that is threaded; Described sensor connector 15 is fixedly connected with the bottom of described the second leading screw 22 by screw, and described standard weighing and force-measuring transducer 16 is fixedly connected with the bottom of described sensor connector 15 by screw.
In the present embodiment, described the first motor 19 is alternating current generator.Described the second screw-threaded shaft elevator 14 is ball screw type elevator.Described the second motor 11 is servomotor, and described motor driver 37 is motor servo driver.Described pressure preloads set-up of control system in pressure preloads switch board 30, and described pressure preloads switch board 30 and is arranged on described supporting leg 1 side, and described motor control switch 36 is relay.
During concrete enforcement, in described guide pin bushing, be filled with railway grease.
In conjunction with Fig. 8, the pre-support method of weighing and force-measuring transducer automatic pressure of the present invention, comprises the following steps:
Step 1, parameter initialization: adopt described bar code scanner 29 to read the pressure test parameter that is stored in the weighing and force-measuring transducer to be measured 17 in bar code 33, and the pressure test parameter reading is uploaded to industrial control computer 27 in real time, and carry out initialization setting by 27 pairs of pressure test parameters of operation industrial control computer;
Step 2, weighing and force-measuring transducer 17 to be measured clamps: first, manually weighing and force-measuring transducer 17 to be measured is arranged in installation of sensors groove 21, then, by operation industrial control computer 27, the forward control signal of input to the first motor 19, industrial control computer 27 is transferred to motor control switch 36 by described action control signal by data collecting card 28, control motor control switch 36 and connect the current supply circuit of the first motor 19, the first motor 19 drives the first screw-threaded shaft elevator 4 to drive the first leading screw 10 up, the first leading screw 10 drives movable table 6, clamp of sensor 18 and weighing and force-measuring transducer to be measured 17 move upward, the electric current of 38 pairs of the first motors 19 of current detection circuit module detects and exports to motor control switch 36 in real time, when the current value detecting surpasses the current value that motor control switch 36 allows to pass through, motor control switch 36 disconnects the current supply circuit of the first motor 19, the first motor 19 stops forward, the first screw-threaded shaft elevator 4 is in self-locking state, now, weighing and force-measuring transducer 17 to be measured has been installed between fixed head 7 and clamp of sensor 18,
Step 3, weighing and force-measuring transducer 17 pressure-loaded to be measured: first, described industrial control computer 27 detects the state of motor control switch 36 by data collecting card 28, after described motor control switch 36 being detected and having disconnected, 27 pairs of described normal pressure measuring instruments 31 of described industrial control computer and testing pressure measuring instrument 32 respectively carry out zero clearing calibration operation one time, after zero clearing calibration finishes, normal pressure measuring instrument 31 reads standard weighing and force-measuring transducer 16 initial values and is transferred to industrial control computer 27, testing pressure measuring instrument 32 reads weighing and force-measuring transducer 17 initial values to be measured and is transferred to industrial control computer 27, then, by operation industrial control computer 27, the forward control signal of input to the second motor 11, industrial control computer 27 is transferred to motor driver 37 by described forward control signal by data collecting card 28, motor driver 37 drives the second motor 11 forwards, the second motor 11 drives the second screw-threaded shaft elevator 14 descending, the second screw-threaded shaft elevator 14 drives the second leading screw 22 descending, the second leading screw 22 drives sensor connector 15 and standard weighing and force-measuring transducer 16 to move downward, normal pressure measuring instrument 31 reads in real time the force value that standard weighing and force-measuring transducer 16 detects and is transferred to industrial control computer 27, testing pressure measuring instrument 32 reads in real time the force value that weighing and force-measuring transducer 17 to be measured detects and is transferred to industrial control computer 27, the pressure data of 27 pairs of normal pressure measuring instruments 31 of industrial control computer and testing pressure measuring instrument 32 real-time Transmission carries out analyzing and processing, and with step 1 in the pressure test parameter that arranges compare, according to comparative result, export corresponding the second motor 11 speed control signals, and be transferred to motor driver 37 by data collecting card 28, motor driver 37 drives the second motor 11 forwards according to described the second motor 11 speed control signals, when standard weighing and force-measuring transducer 16 moves downward while touching described weighing and force-measuring transducer 17 to be measured, started pressure-loaded process, described standard weighing and force-measuring transducer 16 and weighing and force-measuring transducer to be measured 17 have been subject to identical pressure, normal pressure measuring instrument 31 reads in real time the force value that standard weighing and force-measuring transducer 16 detects and is transferred to industrial control computer 27, testing pressure measuring instrument 32 reads in real time the force value that weighing and force-measuring transducer 17 to be measured detects and is transferred to industrial control computer 27, the pressure data of 27 pairs of normal pressure measuring instruments 31 of industrial control computer and testing pressure measuring instrument 32 real-time Transmission carries out analyzing and processing, and with step 1 in the pressure test parameter that arranges compare, when the pressure data of real-time Transmission equates with the pressure test parameter arranging in step 1, industrial control computer 27 output the second motors 11 stop action control signal, and be transferred to motor driver 37 by data collecting card 28, motor driver 37 stops driving the second motor 11 forwards, the second screw-threaded shaft elevator 14 is in self-locking state, keep after a period of time, the pressure data of 27 pairs of normal pressure measuring instruments 31 of industrial control computer and testing pressure measuring instrument 32 real-time Transmission reads record,
Step 4, weighing and force-measuring transducer 17 discharge degree to be measured: recorded after pressure data when industrial control computer 27 reads, the control signal of industrial control computer 27 output the second motor 11 reversion certain angles, and be transferred to motor driver 37 by data collecting card 28, motor driver 37 drives the second motor 11 reversions, the second motor 11 drives the second screw-threaded shaft elevator 14 up, the second screw-threaded shaft elevator 14 drives the second leading screw 22 up, the second leading screw 22 drives sensor connector 15 and standard weighing and force-measuring transducer 16 to move upward, when the second motor 11 is inverted to certain angle, the lower end of described standard weighing and force-measuring transducer 16 separates completely with described weighing and force-measuring transducer 17 to be measured, now, the pressure data of 27 pairs of normal pressure measuring instruments 31 of described industrial control computer and testing pressure measuring instrument 32 real-time Transmission reads record, then, 27 pairs of described normal pressure measuring instruments 31 of described industrial control computer and testing pressure measuring instrument 32 respectively carry out one time zero clearing calibration operation again, after zero clearing calibration finishes, described industrial control computer 27 reads record to the pressure data of normal pressure measuring instrument 31 and testing pressure measuring instrument 32 real-time Transmission again,
Step 5, repeating step two, to step 4, have reached the preloading number of times of weighing and force-measuring transducer 17 required pressures to be measured until pressure preloads number of times;
Step 6, weighing and force-measuring transducer 17 to be measured is removed stage makeup and costume: after pressure preloads and finishes, by operation industrial control computer 27, the reverse control signal of input to the first motor 19, industrial control computer 27 is transferred to motor control switch 36 by described reverse control signal by data collecting card 28, control motor control switch 36 and connect the current supply circuit of the first motor 19, the first motor 19 drives the first screw-threaded shaft elevator 4 to drive the first leading screw 10 descending, the first leading screw 10 drives movable table 6, clamp of sensor 18 and weighing and force-measuring transducer to be measured 17 move downward, when the first guide pin bushing 5-1 moves downward the position that described the first limit switch 34 touches lower shoe 2, and when the second guide pin bushing 5-2 moves downward described the second limit switch 35 and touches the position of lower shoe 2, industrial control computer 27 collects the signal of the first limit switch 34 and the signal of the second limit switch 35 by data collecting card 28, industrial control computer 27 output the first motors 19 stop reverse control signal, and be transferred to motor control switch 36 by data collecting card 28, control the current supply circuit that motor control switch 36 disconnects the first motor 19, the first motor 19 stops reversion, the first screw-threaded shaft elevator 4 is in self-locking state, manually by weighing and force-measuring transducer 17 to be measured from the interior taking-up of installation of sensors groove 21.
After above weighing and force-measuring transducer automatic pressure preload process finishes, industrial control computer 27 just can call weighing and force-measuring transducer static performance index computing module, and detect rules > > (JJG391-2005) to exporting zero point according to < < weighing and force-measuring transducer, Full-span output, nonlinearity, sluggish, , repeatability, degree of accuracy, sensitivity, the computing method requirement of these 9 static performance index of zero point drift and overload, the measured value of the weighing and force-measuring transducer to be measured 17 that the measured value of the standard weighing and force-measuring transducer 16 that normal pressure measuring instrument 31 is read under different conditions and testing pressure measuring instrument 32 read under different conditions carries out analytical calculation, calculate 9 static performance index parameters of weighing and force-measuring transducer 17 to be measured.Utilize 9 normal datas of the weighing and force-measuring transducer to be measured 17 of the various models of setting up in advance, compare judgement with 9 static performance index parameters of the weighing and force-measuring transducer to be measured 17 calculating, output judged result and 9 static performance index parameters that calculate.
During concrete enforcement, industrial control computer 27 can adopt Access database to preserve weighing and force-measuring transducer to be measured 17 that measured value under different conditions of standard weighing and force-measuring transducer 16 that normal pressure measuring instrument 31 reads and testing pressure measuring instrument 32 the read measured value under different conditions, and judged result and 9 static performance index parameters calculating are preserved.The functions such as in addition, industrial control computer 27 can also provide data search for the external world, shares, printing.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. a weighing and force-measuring transducer automatic pressure preloads equipment, it is characterized in that: comprise the pre-borne control system of pressure preloading device and pressure, described pressure preloading device comprises frame, weighing and force-measuring transducer motion to be measured and standard weighing and force-measuring transducer motion, described frame comprises supporting leg (1), be arranged on the lower shoe (2) at supporting leg (1) top, be disposed on the first guide pillar (3-1) and the second guide pillar (3-2) on lower shoe (2), and the entablature (9) that is arranged on the first guide pillar (3-1) and the second guide pillar (3-2) top, described the first guide pillar (3-1) and the second guide pillar (3-2) are parallel to each other, described weighing and force-measuring transducer motion to be measured comprises that the first screw-threaded shaft elevator (4) being arranged on lower shoe (2) is connected with the first screw-threaded shaft elevator (4) and the first motor (19) for driving the first screw-threaded shaft elevator (4) to move, on described the first screw-threaded shaft elevator (4), be connected with the first leading screw (10), the top of described the first leading screw (10) is provided with the movable table (6) can be under the drive of the first leading screw (10) moving up and down along the first guide pillar (3-1) and the second guide pillar (3-2), the both sides of described movable table (6) are respectively arranged with the first guide pin bushing (5-1) matching with the first guide pillar (3-1) and the second guide pin bushing (5-2) matching with the second guide pillar (3-2), the top of described movable table (6) is provided with clamp of sensor (18), the top of described clamp of sensor (18) has for the installation of sensors groove (21) of weighing and force-measuring transducer to be measured (17) is installed, described standard weighing and force-measuring transducer motion comprises that the second screw-threaded shaft elevator (14) being arranged on entablature (9) is connected with the second screw-threaded shaft elevator (14) and the second motor (11) for driving the second screw-threaded shaft elevator (14) to move, on described the second screw-threaded shaft elevator (14), be connected with the second leading screw (22), on described entablature (9), be connected with the fixed leg (8) stretching out downwards, the bottom of described fixed leg (8) is fixedly connected with that being useful on matches with described clamp of sensor (18) and is fixedly clamped the fixed head (7) of described weighing and force-measuring transducer to be measured (17), the bottom of described the second leading screw (22) is provided with sensor connector (15), the bottom of described sensor connector (15) is connected with standard weighing and force-measuring transducer (16), the pre-borne control system of described pressure comprises industrial control computer (27) and the data collecting card (28) joining with described industrial control computer (27), bar code scanner (29), normal pressure measuring instrument (31) and testing pressure measuring instrument (32), described in each, on weighing and force-measuring transducer to be measured (17), be all pasted with the bar code (33) that storage inside has the test parameter of weighing and force-measuring transducer to be measured (17), the signal input part of the signal output part of described standard weighing and force-measuring transducer (16) and described normal pressure measuring instrument (31) joins, the signal input part of the signal output part of described weighing and force-measuring transducer to be measured (17) and described testing pressure dynamometer (32) joins, on described data collecting card (28), be connected to for the first guide pin bushing (5-1) being moved downward to the first limit switch (34) that extreme position detects, for the second guide pin bushing (5-2) is moved downward to the second limit switch (35) that extreme position detects, for motor control switch (36) and the motor driver (37) for the second motor (11) is driven that the action of the first motor (19) is controlled, described the first limit switch (34) is arranged on the bottom of described the first guide pin bushing (5-1), described the second limit switch (35) is arranged on the bottom of described the second guide pin bushing (5-2), described motor control switch (36) is connected in the current supply circuit of the first motor (19), on described the first motor (19), be provided with the current detection circuit module (38) for the electric current of described the first motor (19) is detected, described current detection circuit module (38) is joined with described motor control switch (36), described the second motor (11) joins with described motor driver (37).
2. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described lower shoe (2) is fixedly connected on described supporting leg (1) top by screw, the upper and lower of the upper and lower of described the first guide pillar (3-1) and described the second guide pillar (3-2) is provided with external thread, is provided with for the first threaded hole of described the first guide pillar (3-1) that is threaded with for the second threaded hole of described the second guide pillar (3-2) that is threaded on described entablature (9) and lower shoe (2).
3. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described the first screw-threaded shaft elevator (4) is fixedly connected on described lower shoe (2) by the first screw-threaded shaft elevator base (23), the output shaft of described the first motor (19) is connected with the input shaft of described the first screw-threaded shaft elevator (4) by the first shaft coupling (24), and the side of described supporting leg (1) is fixedly connected with and is useful on the first motor cabinet (20) that described the first motor (19) is installed; The top of described the first leading screw (10) is fixedly connected with the bottom of described movable table (6) by leading screw joint flange (25), and the place, centre position, bottom of described movable table (6) is provided with a plurality of for be fixedly connected with the 3rd threaded hole (39) of described leading screw joint flange (25) by screw; Two side roof parts of described movable table (6) be respectively arranged with a plurality of for the 4th threaded hole (40) that is fixedly connected with described the first guide pin bushing (5-1) by screw with a plurality of for be fixedly connected with the 5th threaded hole (41) of described the second guide pin bushing (5-2) by screw; The crown center position of described movable table (6) is provided with a plurality of for be fixedly connected with the 6th threaded hole (42) of described clamp of sensor (18) by screw, and the bottom of described clamp of sensor (18) is provided with the 9th threaded hole (43) matching with the 6th threaded hole (42).
4. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described the second screw-threaded shaft elevator (14) is fixedly connected on described entablature (9) by the second screw-threaded shaft elevator base (26), the output shaft of described the second motor (11) is connected with the input shaft of described the second screw-threaded shaft elevator (14) by the second shaft coupling (13), and described entablature (9) top is fixedly connected with and is useful on the second motor cabinet (12) that described the second motor (11) is installed.
5. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: the upper and lower of described fixed leg (8) is provided with external thread, on described entablature (9), be provided with the 7th threaded hole for the described fixed leg (8) that is threaded, on described fixed head (7), be provided with the 8th threaded hole for the described fixed leg (8) that is threaded; Described sensor connector (15) is fixedly connected with the bottom of described the second leading screw (22) by screw, and described standard weighing and force-measuring transducer (16) is fixedly connected with the bottom of described sensor connector (15) by screw.
6. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described the first motor (19) is alternating current generator.
7. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described the second screw-threaded shaft elevator (14) is ball screw type elevator.
8. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described the second motor (11) is servomotor, and described motor driver (37) is motor servo driver.
9. according to weighing and force-measuring transducer automatic pressure claimed in claim 1, preload equipment, it is characterized in that: described pressure preloads set-up of control system in pressure preloads switch board (30), described pressure preloads switch board (30) and is arranged on described supporting leg (1) side, and described motor control switch (36) is relay.
10. utilize the pre-support method of weighing and force-measuring transducer automatic pressure of the preloading equipment of automatic pressure as claimed in claim 1, it is characterized in that the method comprises the following steps:
Step 1, parameter initialization: the pressure test parameter of the weighing and force-measuring transducer to be measured (17) that adopts described bar code scanner (29) to read to be stored in bar code (33), and the pressure test parameter reading is uploaded to industrial control computer (27) in real time, and by operation industrial control computer (27), pressure test parameter is carried out to initialization setting;
Step 2, weighing and force-measuring transducer to be measured (17) clamps: first, manually weighing and force-measuring transducer to be measured (17) is arranged in installation of sensors groove (21), then, by operation industrial control computer (27), the forward control signal of input to the first motor (19), industrial control computer (27) is transferred to motor control switch (36) by described action control signal by data collecting card (28), control motor control switch (36) and connect the current supply circuit of the first motor (19), the first motor (19) drives the first screw-threaded shaft elevator (4) to drive the first leading screw (10) up, the first leading screw (10) drives movable table (6), clamp of sensor (18) and weighing and force-measuring transducer to be measured (17) move upward, current detection circuit module (38) detects and exports to motor control switch (36) in real time to the electric current of the first motor (19), when the current value detecting surpasses the current value that motor control switch (36) allows to pass through, motor control switch (36) disconnects the current supply circuit of the first motor (19), the first motor (19) stops forward, the first screw-threaded shaft elevator (4) is in self-locking state, now, weighing and force-measuring transducer to be measured (17) has been installed between fixed head (7) and clamp of sensor (18),
Step 3, weighing and force-measuring transducer to be measured (17) pressure-loaded: first, described industrial control computer (27) detects the state of motor control switch (36) by data collecting card (28), after described motor control switch (36) being detected and having disconnected, described industrial control computer (27) respectively carries out zero clearing calibration operation one time to described normal pressure measuring instrument (31) and testing pressure measuring instrument (32), after zero clearing calibration finishes, normal pressure measuring instrument (31) reads standard weighing and force-measuring transducer (16) initial value and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads weighing and force-measuring transducer to be measured (17) initial value and is transferred to industrial control computer (27), then, by operation industrial control computer (27), the forward control signal of input to the second motor (11), industrial control computer (27) is transferred to motor driver (37) by described forward control signal by data collecting card (28), motor driver (37) drives the second motor (11) forward, the second motor (11) drives the second screw-threaded shaft elevator (14) descending, the second screw-threaded shaft elevator (14) drives the second leading screw (22) descending, the second leading screw (22) drives sensor connector (15) and standard weighing and force-measuring transducer (16) to move downward, normal pressure measuring instrument (31) reads in real time the force value that standard weighing and force-measuring transducer (16) detects and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads in real time the force value that weighing and force-measuring transducer to be measured (17) detects and is transferred to industrial control computer (27), industrial control computer (27) carries out analyzing and processing to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, according to comparative result, export corresponding the second motor (11) speed control signal, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) drives the second motor (11) forward according to described the second motor (11) speed control signal, when standard weighing and force-measuring transducer (16) moves downward while touching described weighing and force-measuring transducer to be measured (17), started pressure-loaded process, described standard weighing and force-measuring transducer (16) and weighing and force-measuring transducer to be measured (17) have been subject to identical pressure, normal pressure measuring instrument (31) reads in real time the force value that standard weighing and force-measuring transducer (16) detects and is transferred to industrial control computer (27), testing pressure measuring instrument (32) reads in real time the force value that weighing and force-measuring transducer to be measured (17) detects and is transferred to industrial control computer (27), industrial control computer (27) carries out analyzing and processing to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, and with step 1 in the pressure test parameter that arranges compare, when the pressure data of real-time Transmission equates with the pressure test parameter arranging in step 1, industrial control computer (27) output the second motor (11) stops action control signal, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) stops driving the second motor (11) forward, the second screw-threaded shaft elevator (14) is in self-locking state, keep after a period of time, industrial control computer (27) reads record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission,
Step 4, weighing and force-measuring transducer to be measured (17) discharge degree: recorded after pressure data when industrial control computer (27) reads, the control signal of industrial control computer (27) output the second motor (11) reversion certain angle, and be transferred to motor driver (37) by data collecting card (28), motor driver (37) drives the second motor (11) reversion, the second motor (11) drives the second screw-threaded shaft elevator (14) up, the second screw-threaded shaft elevator (14) drives the second leading screw (22) up, the second leading screw (22) drives sensor connector (15) and standard weighing and force-measuring transducer (16) to move upward, when the second motor (11) is inverted to certain angle, the lower end of described standard weighing and force-measuring transducer (16) separates completely with described weighing and force-measuring transducer to be measured (17), now, described industrial control computer (27) reads record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission, then, described industrial control computer (27) respectively carries out one time zero clearing calibration operation again to described normal pressure measuring instrument (31) and testing pressure measuring instrument (32), after zero clearing calibration finishes, described industrial control computer (27) reads record to the pressure data of normal pressure measuring instrument (31) and testing pressure measuring instrument (32) real-time Transmission again,
Step 5, repeating step two, to step 4, have reached the preloading number of times of weighing and force-measuring transducer to be measured (17) required pressure until pressure preloads number of times;
Step 6, weighing and force-measuring transducer to be measured (17) is removed stage makeup and costume: after pressure preloads and finishes, by operation industrial control computer (27), the reverse control signal of input to the first motor (19), industrial control computer (27) is transferred to motor control switch (36) by described reverse control signal by data collecting card (28), control motor control switch (36) and connect the current supply circuit of the first motor (19), the first motor (19) drives the first screw-threaded shaft elevator (4) to drive the first leading screw (10) descending, the first leading screw (10) drives movable table (6), clamp of sensor (18) and weighing and force-measuring transducer to be measured (17) move downward, when the first guide pin bushing (5-1) moves downward the position that described the first limit switch (34) touches lower shoe (2), and when the second guide pin bushing (5-2) moves downward described the second limit switch (35) and touches the position of lower shoe (2), industrial control computer (27) collects the signal of the first limit switch (34) and the signal of the second limit switch (35) by data collecting card (28), industrial control computer (27) output the first motor (19) stops reverse control signal, and be transferred to motor control switch (36) by data collecting card (28), control the current supply circuit that motor control switch (36) disconnects the first motor (19), the first motor (19) stops reversion, the first screw-threaded shaft elevator (4) is in self-locking state, manually weighing and force-measuring transducer to be measured (17) is taken out in installation of sensors groove (21).
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| CN104422559A (en) * | 2013-08-27 | 2015-03-18 | 北京中科泛华测控技术有限公司 | Hydraulic force applying system |
| CN114754854A (en) * | 2022-04-15 | 2022-07-15 | 深兰科技（上海）有限公司 | Weighing sensor test equipment and test system |
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| CN2532467Y (en) * | 2002-04-08 | 2003-01-22 | 赵本东 | Large weighing apparatus caribration instrument |
| CN202676276U (en) * | 2012-04-25 | 2013-01-16 | 软控股份有限公司 | Apparatus for check weighing of material |
| CN203024854U (en) * | 2013-01-27 | 2013-06-26 | 陕西理工学院 | Automatic pressure preloading equipment for weighing force transducer |
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| JP2004255307A (en) * | 2003-02-26 | 2004-09-16 | Hitachi Constr Mach Co Ltd | Garbage disposal, control device therefor and method for measuring mass of garbage |
| EP2216635B1 (en) * | 2009-02-06 | 2019-07-17 | Mettler-Toledo GmbH | Calibrating device for a power measurement device and power measurement device |
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| CN2532467Y (en) * | 2002-04-08 | 2003-01-22 | 赵本东 | Large weighing apparatus caribration instrument |
| CN202676276U (en) * | 2012-04-25 | 2013-01-16 | 软控股份有限公司 | Apparatus for check weighing of material |
| CN203024854U (en) * | 2013-01-27 | 2013-06-26 | 陕西理工学院 | Automatic pressure preloading equipment for weighing force transducer |
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Effective date of registration: 20160310 Address after: 88 No. 252000, the Yellow River Road, hi tech Industrial Development Zone, Shandong, Liaocheng Patentee after: Nobot Intelligent Equipment (Shandong) Co., Ltd. Address before: 723001 School of physical and electrical engineering, Shaanxi University of Technology, Hantai District, Shaanxi, Hanzhoung Patentee before: Shaanxi Science and Engineering College |