CN104198219A - Laboratory drilling and coring machine capable of automatically regulating rotation speed of drilling head - Google Patents
Laboratory drilling and coring machine capable of automatically regulating rotation speed of drilling head Download PDFInfo
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- CN104198219A CN104198219A CN201410428269.XA CN201410428269A CN104198219A CN 104198219 A CN104198219 A CN 104198219A CN 201410428269 A CN201410428269 A CN 201410428269A CN 104198219 A CN104198219 A CN 104198219A
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Abstract
The invention discloses a laboratory drilling and coring machine capable of automatically regulating the rotation speed of a drilling head. The laboratory drilling and coring machine comprises a rack, a drilling head and a motor, wherein the drilling head and the motor are mounted on the rack; a vibration sensor is arranged at the top part of the outer wall surface of the drilling head; a signal converter and a frequency converter are arranged on the rack respectively; the vibration sensor, the signal converter, the frequency converter and the motor are sequentially connected with one another to form a control loop; the vibration sensor is used for detecting mechanical vibration of the drilling head during working and transmitting vibration signals to the signal converter; the signal converter is used for converting the vibration signals to electric signals and transmitting the electric signals to the frequency converter; the frequency converter is used for regulating the rotation speed of the motor according to the change of the electric signals. Compared with the prior art, the laboratory drilling and coring machine has the characteristics that the operation is simple, results of core drilling and sampling experiments are truthful and accurate, the possibility of accidental error in the experiment process is low, the service life of the drilling head is long, etc.
Description
Technical field
The present invention relates to a kind of use for laboratory core-drilling machine, relate in particular to a kind of use for laboratory core-drilling machine that can automatically regulate drill speed.
Background technology
In prior art, use for laboratory core-drilling machine operated by rotary motion has high, medium and low third gear (or more gears) speed adjusting knob, to meet user of service's different requirements to drill speed when boring and coring operates.This skill level and the operating experience that relies on operating personnel completely, regulates the mode of the rotating speed of drill bit to have many deficiencies by gearshift, and main manifestations is:
From drill bit contact sample, produce the whole information exchanging process that vibrations, vibration signal feed back to staff, are transferred to brain, brain instruction manual adjustments more again, make the rationality of the adjustment operation of drill speed speed rely on operating personnel's experience completely.Obviously, the method that this drill speed that relies on operating personnel's skill level and operating experience completely regulates, inevitably, holds not precisely, regulates the problems such as leading or hysteresis the opportunity that certainly exists.And shift speed change regulates the velocity variations producing to have jumping characteristic, can not realize stepless change.
And the height of the rotating speed of drill bit directly affects the serviceable life of drill bit and/or authenticity and the accuracy of core boring sampling result: drill speed is too high, get core efficiency high, but easily cause Driller Exothermic, drill bit to cross quick-wearing for harder test specimen;
When drill speed is too low, on the one hand, get core efficiency low; On the other hand, for softer test specimen, the quality of core is got in very difficult assurance, and then it is representative to cause obtained specimen sample to lack;
Particularly, core boring sampling for System for Large-scale Specimen, because the hardness number of its different parts may there are differences, thisly only according to operating experience, shift gears and regulate the way of drill speed, have larger blindness, different experiment operator is carried out identical core boring sampling and is certainly existed larger accidental error.
The rotating speed that how to guarantee drill bit mates with the in good time of specimen hardness, to obtain representative specimen sample, and effectively guarantees the serviceable life of drill bit, has become those skilled in the art and has needed one of technical matters of solution badly.
Summary of the invention
The object of the invention is, the use for laboratory core boring sampling machine that a kind of control mode is simple, drill speed can regulate according to specimen hardness situation of change in good time is automatically provided.
The technical scheme that the present invention adopted is for achieving the above object, a kind of use for laboratory core-drilling machine that can automatically regulate drill speed, comprise frame, rack-mounted drill bit and motor, it is characterized in that, the top of described drill bit outside wall surface is provided with a vibration transducer; In described frame, be also respectively arranged with signal converter and frequency converter;
Described vibration transducer, signal converter, frequency converter and motor are linked in sequence into a control loop; Wherein, mechanical vibration when described vibration transducer is worked for detection of drill bit, and vibration signal is transferred to signal converter;
Described signal converter is for changing into electric signal by above-mentioned vibration signal, and by this electric signal transmission to frequency converter;
Described frequency converter regulates the rotating speed of motor according to the variation of above-said current signal.
The technique effect that technique scheme is directly brought is, can utilize drill bit in to the test specimen boring and coring course of work, corresponding relation between the rule of the mechanical vibration that produce and different specimen hardness, by vibration transducer, mechanical vibration information is transferred to signal converter in good time, through signal converter, change into electric signal transmission to frequency converter again, by frequency converter, regulate the rotating speed of motor.This on the one hand, thoroughly eliminated the accidental error existing in prior art core boring sampling experimentation: the mode of the control form of shifting gears manually of prior art being changed into automatic control, according to the firmness change situation for the treatment of core boring sampling test specimen, automatically regulate drill speed in good time, thereby significantly improved the rationality of drill speed in core boring sampling process, and then guaranteed authenticity and the reliability of core boring sampling experimental result;
And, regulate discontinuous on numerical value to change over infinite variable speed regulative mode the drill speed of prior art, further guaranteed the accuracy of experimental result;
On the other hand, be conducive to the prolongation of use for laboratory core-drilling machine drilling life of bit, thereby reduce its use cost.
As preferably, the above-mentioned use for laboratory core-drilling machine that can automatically regulate drill speed, is characterized in that, is provided with PID regulator in described frequency converter, described PID regulator for the electric signal that sends according to described signal converter by formula
converse result, as the frequency adjustment instruction of frequency converter; In above formula, f represents frequency, and i represents electric signal, the empirical value of r for setting.
The technique effect that technique scheme is directly brought is, control mode is simple, and r value can rule of thumb originally be set, the facility of having brought use for laboratory core-drilling machine to use.
In sum, the use for laboratory core-drilling machine that can automatically regulate drill speed of the present invention, with respect to prior art, has simple to operate, core boring sampling experimental result true, accurately, it is little that experimentation accidental error produces probability, the long beneficial effect that waits of drilling life of bit.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention can regulate the use for laboratory core-drilling machine of drill speed automatically.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, the use for laboratory core-drilling machine that can automatically regulate drill speed of the present invention, it comprises frame 3, rack-mounted drill bit 2 and motor 4, is provided with a vibration transducer 1 on the top of drill bit outside wall surface; In frame, be also respectively arranged with signal converter and frequency converter (not shown);
Above-mentioned vibration transducer 1, signal converter, frequency converter and motor are linked in sequence into a control loop; Wherein, mechanical vibration when vibration transducer 1 is worked for detection of drill bit, and vibration information is transferred to signal converter;
Signal converter is used for above-mentioned vibration information to change into electric signal, and transfers to frequency converter;
Frequency converter regulates the rotating speed of motor according to the variation of electric signal.
In above-mentioned frequency converter, be provided with PID regulator, described PID regulator for the electric signal that sends according to signal converter by formula:
converse result, as the frequency adjustment instruction of frequency converter; In above formula, f represents frequency, and i represents electric signal, the empirical value of r for setting.
Claims (2)
1. can automatically regulate a use for laboratory core-drilling machine for drill speed, comprise frame, rack-mounted drill bit and motor, it is characterized in that, the top of described drill bit outside wall surface is provided with a vibration transducer; In described frame, be also respectively arranged with signal converter and frequency converter;
Described vibration transducer, signal converter, frequency converter and motor are linked in sequence into a control loop; Wherein, mechanical vibration when described vibration transducer is worked for detection of drill bit, and vibration signal is transferred to signal converter;
Described signal converter is for changing into electric signal by above-mentioned vibration signal, and by this electric signal transmission to frequency converter;
Described frequency converter regulates the rotating speed of motor according to the variation of above-said current signal.
2. the use for laboratory core-drilling machine that can automatically regulate drill speed according to claim 1, is characterized in that, is provided with PID regulator in described frequency converter, and the electric signal that described PID regulator is used for sending according to described signal converter is by formula
converse result, as the frequency adjustment instruction of frequency converter;
In above formula, f represents frequency, and i represents electric signal, the empirical value of r for setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428269.XA CN104198219A (en) | 2014-08-27 | 2014-08-27 | Laboratory drilling and coring machine capable of automatically regulating rotation speed of drilling head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428269.XA CN104198219A (en) | 2014-08-27 | 2014-08-27 | Laboratory drilling and coring machine capable of automatically regulating rotation speed of drilling head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104198219A true CN104198219A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428269.XA Pending CN104198219A (en) | 2014-08-27 | 2014-08-27 | Laboratory drilling and coring machine capable of automatically regulating rotation speed of drilling head |
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| CN (1) | CN104198219A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158014A (en) * | 2015-08-26 | 2015-12-16 | 中国石油大学(北京) | Method for taking oil sand rock core |
| CN105649528A (en) * | 2016-03-22 | 2016-06-08 | 安徽理工大学 | Intelligent fracture-preventing core drilling machine and use method thereof |
| CN112092210A (en) * | 2020-10-20 | 2020-12-18 | 邵阳县华锐合金工具有限公司 | Prevent cracked frequency conversion glass hole of glass and bore |
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| CN203658090U (en) * | 2013-12-18 | 2014-06-18 | 河南省高远公路养护技术有限公司 | Bituminous concrete sample coring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1996035938A1 (en) * | 1995-05-10 | 1996-11-14 | Blackdown Consultants Limited | Slurry density measurement |
| US20090159335A1 (en) * | 2007-12-21 | 2009-06-25 | Corpro Systems Limited | Monitoring apparatus for core barrel operations |
| CN101497188A (en) * | 2008-02-01 | 2009-08-05 | 百得有限公司 | Power tool having motor speed monitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158014A (en) * | 2015-08-26 | 2015-12-16 | 中国石油大学(北京) | Method for taking oil sand rock core |
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| CN105649528A (en) * | 2016-03-22 | 2016-06-08 | 安徽理工大学 | Intelligent fracture-preventing core drilling machine and use method thereof |
| CN112092210A (en) * | 2020-10-20 | 2020-12-18 | 邵阳县华锐合金工具有限公司 | Prevent cracked frequency conversion glass hole of glass and bore |
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Application publication date: 20141210 |