CN105258848A - Mechanical transmission-type build-up force standard machine - Google Patents
Mechanical transmission-type build-up force standard machine Download PDFInfo
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- CN105258848A CN105258848A CN201510844343.0A CN201510844343A CN105258848A CN 105258848 A CN105258848 A CN 105258848A CN 201510844343 A CN201510844343 A CN 201510844343A CN 105258848 A CN105258848 A CN 105258848A
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Abstract
The invention discloses a mechanical transmission-type build-up force standard machine, which comprises a frame, a post screw rod, a moving crossbeam, a standard sensor, a detected sensor, and a power transmission mechanism, wherein a vertical beam is arranged on the frame; an upper crossbeam is arranged at the upper part of the vertical beam; the upper crossbeam is connected with the upper part of the post screw rod; the lower part of the post screw rod is connected with a lower crossbeam; a nut is arranged on the moving crossbeam; the nut is matched with the post screw rod; the nut moves axially along the post screw rod; the lower part of the moving crossbeam is connected with the standard sensor; the upper part of the lower crossbeam is provided with a sensor testing platform; the detected sensor is connected with the sensor testing platform; the standard sensor is connected with a standard sensor instrument; the detected sensor is connected with a detected sensor instrument; and the power transmission mechanism, the standard sensor instrument and the detected sensor instrument are respectively connected with a signal acquisition and processing unit. The force standard machine has a simple structure, low manufacturing cost, simple control and high reliability.
Description
Technical field
The present invention relates to force standard machines equipment technical field, particularly relate to a kind of mechanical drive type superposing type force standard machine.
Background technology
The force standard machines had of prior art adopts mechanical transmission mechanism to carry out transmission and slightly loads, when being loaded near target force values, undertaken regulating, producing accurate force value by microcomputerized control, piezoelectric ceramics force value generating means again, and generation force value is controlled within the scope of target force values permissible accuracy.This structure adopts slightly to load to control to separate with accurate force value and controls, host computer and slave computer with the use of, greatly, manufacturing cost is high, inefficiency for control complexity, control difficulty.
The force standard machines had in prior art adopts hydraulic jack to load, and adopts two servo oil pump to coordinate Differential Control, uses oil cylinder to produce small displacement, occurred force value is controlled within the scope of target force values permissible accuracy.This structural requirement configuration two cover servo oil pump and hydraulic jack loading system, system complex, manufacturing cost is high, controls difficulty large.
Also the force standard machines part had in prior art adopts hydraulic jack to load, adopt servomotor to load small oil tank, utilize the principle of linker, then load large tank by small oil tank, make large tank produce small displacement, occurred force value is controlled within the scope of target force values permissible accuracy.The large and small oil cylinder configuration of this structural requirement, complex structure, manufacturing cost is high.
In a word, the structure that these force standard machineses of the prior art adopt also exists system architecture complexity, and manufacturing cost is high, easily produces fault, use and maintenance cost is high, the problem of precision controlling and complicated operation.
Summary of the invention
Object of the present invention is exactly the problems referred to above existed for solving prior art, provides a kind of mechanical drive type superposing type force standard machine, and force standard machines structure of the present invention is simple, low cost of manufacture, controls simple, measuring accuracy and reliability high.
A kind of mechanical drive type superposing type force standard machine, comprise support, column leading screw, dynamic crossbeam, standard transducer, tested sensor, power transmission arrangment, support is provided with vertical vertical beam, entablature is provided with on vertical beam top, described entablature is connected with column leading screw top, described column leading screw bottom is connected with sill, described dynamic crossbeam is provided with nut, described nut coordinates with column leading screw, nut moves axially along column leading screw, described dynamic crossbeam bottom is connected with standard transducer, described sill top is provided with sensor test platform, described tested sensor is connected with sensor test platform, described standard transducer and standard transducer Instrument connection, tested sensor is connected with tested sensor apparatus, power transmission arrangment, standard transducer instrument, tested sensor apparatus is connected with signals collecting and processing unit respectively.
Described power drive mechanism comprises drive motor, slowing-down structure, described drive motor is connected with leading screw lower end by slowing-down structure, described drive motor is connected with the motor support base of bottom, motor support base is connected with support, described column leading screw bottom is connected with sill by lower bearing, entablature is connected by upper bearing with column leading screw top, described reducing gear comprises worm gear, worm screw, column leading screw lower end is located at by described worm gear, column leading screw is driven by worm gear and rotates, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw is provided with follower in axial centre position, the output terminal of described drive motor is connected with driving wheel, described driving wheel is connected with engaged wheel.
Described power drive mechanism comprises drive motor, slowing-down structure, described drive motor, slowing-down structure is connected with dynamic crossbeam top, described reducing gear comprises the worm gear matched, worm screw, described nut adopts flange plate structure, described nut is connected with worm gear by ring flange, described nut is connected with dynamic crossbeam by bearing, worm gear drives nut rotation, nut rotation drives dynamic crossbeam to move up and down along lead screw shaft, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw is provided with follower in axial centre position.The output terminal of described drive motor is connected with driving wheel, and described driving wheel is connected with engaged wheel.
The output terminal of described drive motor is connected with reducer casing, and driving wheel is connected with the output shaft of reducer casing, and driving wheel is connected with follower by belt.
Described drive motor adopts servomotor.
Described column leading screw adopts ball-screw.
Beneficial effect of the present invention:
1. structure of the present invention is simple, physical construction is adopted directly to be loaded on target force values, and energy maintenance energy value stabilization is within the scope of target force values permissible accuracy, and the force value precision required that can be up to state standards, compared with the structure that the piezoelectric ceramic technology adopted with prior art, Hydraulic Double servo Differential Control, two oil cylinder control, avoid in prior art to need to distinguish slightly to load and carry with finishing, and the problem that force value regulates, operation control is complicated.
2. force standard machines manufacturing cost of the present invention is lower, because structure is simple, reliability is high, greatly reduces the manufacturing cost of force standard machines, also reduces the maintenance cost in force standard machines use procedure.
3. the present invention adopts servomotor Direct driver physical construction to carry out the control mode loaded, and adopt standard transducer as feedback signal, carry out full closed loop control, therefore Survey control precision and stability high, reliability is high, and control to be easy to operation, control simpler, be more suitable for when needing accurately to measure and use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is that the A of Fig. 2 is to partial top view.
In figure, 1 column leading screw, 2 dynamic crossbeams, 3 standard transducers, 4 tested sensors, 5 lower bearings, 6 drive motor, 7 supports, 8 driving belts, 9 reducer casinges, 10 motor support bases, 11 vertical beams, 12 entablatures, 13 upper bearings.
Embodiment
In order to understand the present invention better, explain embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of mechanical drive type superposing type force standard machine, comprise support 7, two root post leading screws 1 of both sides, dynamic crossbeam 2, standard transducer 3, tested sensor 4, power transmission arrangment, according to force value size and power machine structure needs, also three root post leading screws or four root post leading screws can be adopted, support is provided with vertical vertical beam 11, entablature 12 is provided with on vertical beam 11 top, described entablature 12 is connected with column leading screw top, described column leading screw bottom is connected with sill, the both sides of described dynamic crossbeam respectively embedded cover are equiped with nut, described nut coordinates with column leading screw, under power transmission arrangment drives, nut moves axially along column leading screw, described dynamic crossbeam bottom is connected with standard transducer 3, described sill top is provided with sensor test platform, described tested sensor 4 is connected with sensor test platform.Described standard transducer and standard transducer Instrument connection, tested sensor is connected with tested sensor apparatus, and power transmission arrangment, standard transducer instrument, tested sensor apparatus are connected with signals collecting and processing unit respectively.Signals collecting and processing unit adopt computing machine.Described column leading screw adopts ball-screw.
Described power drive mechanism comprises drive motor 6, slowing-down structure, described drive motor is connected with leading screw lower end by slowing-down structure, described drive motor 6 is connected with the motor support base 10 of bottom, motor support base 10 is connected with support 7, described column leading screw bottom is connected with sill by lower bearing 5, entablature 12 is connected by upper bearing 13 with column leading screw top, described reducing gear comprises worm gear, worm screw, column leading screw lower end is located at by described worm gear, column leading screw is driven by worm gear and rotates, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw be provided with in axial centre position by (from) driving wheel, the output terminal of described drive motor is connected with driving wheel, described driving wheel is connected with engaged wheel.
The output terminal of described drive motor is connected with reducer casing 9, and driving wheel is connected with the output shaft of reducer casing, and driving wheel is connected with follower by belt 8.
Described drive motor 6 adopts servomotor.
Embodiment 2
As shown in Figure 2 to Figure 3, described power drive mechanism comprises drive motor, slowing-down structure, described drive motor, slowing-down structure is connected with dynamic crossbeam top, described reducing gear comprises the worm gear matched, worm screw, described nut adopts flange plate structure, ring flange is located at the upper surface of nut, described nut is connected with worm gear by ring flange, described nut is connected with dynamic crossbeam by bearing, worm gear drives nut rotation, nut rotation drives dynamic crossbeam to move up and down along lead screw shaft, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw is provided with follower in axial centre position.The output terminal of described drive motor is connected with driving wheel, and described driving wheel is connected with engaged wheel.
The output terminal of described drive motor is connected with reducer casing 9, and driving wheel is connected with the output shaft of reducer casing, and driving wheel is connected with follower by belt 8.
Described drive motor 6 adopts servomotor.
Other structural reference embodiments 1, do not repeat them here.
The course of work of the present invention and principle:
Standard transducer instrument and tested sensor apparatus, its communication interface will match by the interface corresponding with computing machine, standard transducer instrument to collect also shows the data that standard transducer spreads out of, the stressing conditions of reflection standard transducer, standard transducer instrument by the data importing computing machine of standard transducer, for computer software acquisition process; Tested sensor apparatus gathers the data that tested sensor spreads out of, and reflects the stressing conditions of tested sensor.Tested sensor apparatus is by the data importing computing machine of tested sensor, and for computer software acquisition process, by running control program, collection comprises standard transducer instrument and tested sensor apparatus data, controls motor action operation, realizes full closed loop control.Printer is power machine test data print out equipment.The instruction of servomotor receiving computer, carries out accelerating, slows down, stops, rotating forward, the action such as reversion, and drive deceleration mechanism, makes beam lifting move.
During use, standard transducer is fixed on below dynamic crossbeam.Tested sensor is put on the test platform of upper part of the frame.After placement completes, tested sensor signal lines is connected to tested sensor apparatus by operating personnel, enables tested sensor apparatus normally show tested sensing data.After placement completes, generally make the gap retaining 2-5mm between standard transducer and tested sensor.This gap is the idle motion before power machine loads, and is also the idle motion after the unloading of power machine.The large I of this gap decides according to the system resilience of standard transducer, tested sensor, power machine mechanical framework, picks and places as principle decides to facilitate tested sensor.
Dynamic crossbeam is done to decline and is run, and the upper and lower space of framework be made up of dynamic crossbeam, leading screw, support is diminished, and applies pressure to standard transducer and tested sensor.Through one section of idle motion, start to load when standard transducer and tested sensor contacts, motor remains in operation and namely continues to load, until the stress value of standard transducer reaches the requirement of program setting.Dynamic crossbeam is done to rise and is run, and namely realizes standard transducer and the unloading of tested sensor.When standard transducer and tested sensor depart from, namely complete unloading.This rear motor also will continue to run, and makes to produce a gap between standard transducer and tested sensor, to facilitate tested sensor to pick and place, then shuts down.
Dynamic crossbeam oscilaltion campaign can be divided into operation automatically and manually run two kinds of forms, is controlled by computing machine.Automatic operation carries out in test run process, automatically controlled the states such as its lifting, speed, start and stop by software.Manual operation is when the unloaded grand movement of dynamic crossbeam, by software control, according to manual operation software, sends the actions such as operating instruction carries out being elevated, start and stop.
Specific works process is:
Operator runs relevant information by computer interface Input Forces machine: force value standard value, Detection of content require, various operational factor.Force value standard value is the standard transducer instrument indication value of the standard transducer by transmitting and verifying at each force value point, and force value standard value is the reference standard that power machine controls each force value point in operational process.
It is according to the requirement of tested sensor test content that Detection of content requires, may comprise or several in prestrain, non-linear test, creep test, sensitivity test.Operator places tested sensor, and connects tested sensor signal lines to tested sensor apparatus, confirms that power machine equipment is in normal Standby state.
Operator sends by computing machine the instruction that brings into operation, and namely power machine equipment starts to require to carry out testing according to the Detection of content of setting automatically.In power machine loading procedure, the target force values that computing machine requires in requiring according to Detection of content, reads force value standard value, with this force value standard value for desired value, calculates the gap between desired value and Current standards sensor apparatus indicating value, controls motor speed.When standard transducer instrument indication value is close to desired value, control decelerating through motor, difference between the force value utilizing mechnical servo On Fluctuations Cont rol Method of Precise Force value trace technical controlling power machine to apply and desired value is within the scope of national standard precision prescribed, and after force value stabilization, the tested sensor apparatus indicating value of computer acquisition, as the force value data of tested sensor.After power machine completes the Detection of content of Detection of content requirement defined, power machine unload, and run motor meet idle motion require after shut down.The tested sensor force Value Data of computer coordinates, calculates the indices of tested sensor, preserves data to hard disk, display data in screen, printout in printer.Namely a test assignment is completed.
By reference to the accompanying drawings the embodiment of invention is described although above-mentioned; but not limiting the scope of the invention; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (6)
1. a mechanical drive type superposing type force standard machine, it is characterized in that, comprise support, column leading screw, dynamic crossbeam, standard transducer, tested sensor, power transmission arrangment, support is provided with vertical vertical beam, entablature is provided with on vertical beam top, described entablature is connected with column leading screw top, described column leading screw bottom is connected with sill by bearing, described dynamic crossbeam is provided with nut, described nut coordinates with column leading screw, nut moves axially along column leading screw, described dynamic crossbeam bottom is connected with standard transducer, described sill top is provided with sensor test platform, described tested sensor is connected with sensor test platform.Described standard transducer and standard transducer Instrument connection, tested sensor is connected with tested sensor apparatus, and power transmission arrangment, standard transducer instrument, tested sensor apparatus are connected with signals collecting and processing unit respectively.
2. mechanical drive type superposing type force standard machine as claimed in claim 1, it is characterized in that, described power drive mechanism comprises drive motor, slowing-down structure, described drive motor is connected with leading screw lower end by slowing-down structure, described drive motor is connected with the motor support base of bottom, motor support base is connected with support, described column leading screw bottom is connected with sill by lower bearing, entablature is connected by upper bearing with column leading screw top, described reducing gear comprises worm gear, worm screw, column leading screw lower end is located at by described worm gear, column leading screw is driven by worm gear and rotates, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw is provided with follower in axial centre position, the output terminal of described drive motor is connected with driving wheel, described driving wheel is connected with engaged wheel.
3. mechanical drive type superposing type force standard machine as claimed in claim 1, it is characterized in that, described power drive mechanism comprises drive motor, slowing-down structure, described drive motor, slowing-down structure is connected with dynamic crossbeam top, described reducing gear comprises the worm gear matched, worm screw, described nut adopts flange plate structure, described nut is connected with worm gear by ring flange, described nut is connected with dynamic crossbeam by bearing, worm gear drives nut rotation, nut rotation drives dynamic crossbeam to move up and down along lead screw shaft, described worm screw two ends are respectively equipped with helical tooth, described helical tooth respectively with the worm gear of both sides, described worm screw is provided with follower in axial centre position.The output terminal of described drive motor is connected with driving wheel, and described driving wheel is connected with engaged wheel.
4. the mechanical drive type superposing type force standard machine as described in claim 2 or 3, it is characterized in that, the output terminal of described drive motor is connected with reducer casing, and driving wheel is connected with the output shaft of reducer casing, and driving wheel is connected with follower by belt.
5. the mechanical drive type superposing type force standard machine as described in claim 2 or 3, is characterized in that, described drive motor adopts servomotor.
6. mechanical drive type superposing type force standard machine as claimed in claim 1, is characterized in that, described column leading screw adopts ball-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510844343.0A CN105258848A (en) | 2015-11-26 | 2015-11-26 | Mechanical transmission-type build-up force standard machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510844343.0A CN105258848A (en) | 2015-11-26 | 2015-11-26 | Mechanical transmission-type build-up force standard machine |
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| CN106644260A (en) * | 2017-01-25 | 2017-05-10 | 福建省计量科学研究院 | 2MN dead load overlapping composite-type force standard machine |
| CN110702203A (en) * | 2019-10-17 | 2020-01-17 | 山东钢铁集团日照有限公司 | Weighing sensor verification implementation method based on automatic data acquisition |
| CN112924086A (en) * | 2021-01-22 | 2021-06-08 | 上海工业自动化仪表研究院有限公司 | Centering installation structure and centering installation method of detected pull type sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106644260A (en) * | 2017-01-25 | 2017-05-10 | 福建省计量科学研究院 | 2MN dead load overlapping composite-type force standard machine |
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| CN110702203A (en) * | 2019-10-17 | 2020-01-17 | 山东钢铁集团日照有限公司 | Weighing sensor verification implementation method based on automatic data acquisition |
| CN112924086A (en) * | 2021-01-22 | 2021-06-08 | 上海工业自动化仪表研究院有限公司 | Centering installation structure and centering installation method of detected pull type sensor |
| CN112924086B (en) * | 2021-01-22 | 2024-02-06 | 上海工业自动化仪表研究院有限公司 | Centering installation structure and centering installation method of detected pull type sensor |
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