CN110672059A - Calibrating device and calibrating method for slide micrometer - Google Patents
Calibrating device and calibrating method for slide micrometer Download PDFInfo
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- CN110672059A CN110672059A CN201910971697.XA CN201910971697A CN110672059A CN 110672059 A CN110672059 A CN 110672059A CN 201910971697 A CN201910971697 A CN 201910971697A CN 110672059 A CN110672059 A CN 110672059A
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- probe
- measuring tube
- port
- guide rod
- micrometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a calibrating device and a calibrating method of a sliding micrometer, and relates to the technical field of detecting instruments, wherein the calibrating device comprises a shell, a measuring tube, two measuring rings, a humidity-temperature meter, a guide structure, a clamp and a transmission assembly, wherein the measuring tube is arranged in the shell and comprises a first port and a second port, the first port and the second port are both open, the edge of the first port is connected with the shell, a first opening corresponding to the position of the first port is arranged on the shell, and a probe of the sliding micrometer extends into the measuring tube from the first opening and the first port; the two measuring rings are arranged on the measuring tube, and the distance value between the two measuring rings is equal to the standard length of the probe; the humidity-temperature meter sets up on the casing, and anchor clamps are used for the centre gripping guide arm, and anchor clamps setting is connected on guide structure and with drive assembly, and drive assembly can drive anchor clamps and guide arm and move along guide structure, so sets up, can accurately examine and determine whether the probe is fit for observing fast, avoids producing measuring error.
Description
Technical Field
The invention relates to the technical field of detection instruments in hydraulic safety observation engineering, in particular to a calibrating device and a calibrating method of a sliding micrometer.
Background
In engineering, the slide micrometer is used for monitoring vertical or lateral deformation of an underground cavern, and a measuring system of the slide micrometer has the characteristics of high precision and high resolution. The high-precision monitoring instrument needs to be careful in the use process, and the monitoring equipment is not required to be placed in a damp, dust and vibration environment. Meanwhile, the sliding micrometer is required to be used in an engineering field, and the monitoring equipment can measure the temperature and the humidity after adapting to the field environment.
As is known, the underground cavern environment of projects such as water conservancy and hydropower, mines, traffic and the like is severe, and a proper environment is difficult to maintain in the monitoring process of the sliding micrometer. In the prior art, a sliding micrometer is used for measuring the deformation of a specified distance point in the axial direction of a drill hole, a moving probe is used for detecting, and the sliding micrometer can electronically measure the actual distance between two adjacent measuring marks with extremely high system precision because a measuring point is not required to be directly contacted.
A general sliding micrometer includes a probe, a cable, a guide rod, a reading instrument, etc., wherein the probe is equivalent to a connecting rod with a length of 1m, and if the probe of the sliding micrometer is in a severe environment or does not adapt to the environment, zero point offset of the probe is caused; or after being used for many times, the probe works in a humid and dust environment for a long time, and the probe can be worn or deformed. Both of the above two situations will cause the measurement system of the slide micrometer to generate a large error from the first measurement section, and in the process of measuring and lifting the probe section by section, the measurement error is continuously accumulated, so that the error of the monitoring result is too large.
Currently, in the case of a slide micrometer probe, no simple and easy calibration device and calibration method exist in engineering practice, which is inconsistent with the requirements of the current regulations for the regular calibration of safety monitoring equipment. When the probe of some sliding micrometer is used in the engineering field, the probe is only allowed to stand for a period of time in the field environment to default that the probe adapts to the surrounding environment for observation, but how long time is needed to observe, how to determine the probe adapts to the surrounding environment specifically, and whether the state of the surrounding environment adapted by the probe is the optimal state for observation cannot be guaranteed. In short, there is no device or method capable of accurately and quickly knowing the current state of the probe or determining whether the probe can perform observation, and if the determination is not accurate, the above-mentioned measurement error will be caused in the observation process.
Therefore, how to solve the problems that the state of the probe of the slide micrometer cannot be accurately and quickly detected, whether the probe is suitable for observation or not and the measurement error of the probe in the observation process caused by inaccurate judgment in the prior art become important technical problems to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a calibrating device of a slide micrometer, which aims to solve the technical problems that the state of a probe of the slide micrometer cannot be accurately and quickly calibrated, whether the probe is suitable for observation or not and measurement errors are generated in the observation process of the probe due to inaccurate judgment in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
The invention provides a calibrating device of a slide micrometer, comprising:
a housing;
the measuring tube is arranged in the shell and comprises a first port and a second port, the first port and the second port are both provided with openings, the edge of the first port is connected with the shell, the shell is provided with a first opening corresponding to the position of the first port, and a probe of an external sliding micrometer extends into the measuring tube from the first opening and the first port;
the two measuring rings are arranged on the measuring tube, the distance between the two measuring rings is a first distance value, and the first distance value is the same as the standard length of a probe of the sliding micrometer;
the humidity-temperature meter is arranged on the shell and is used for measuring the humidity and the temperature in the measuring tube;
the fine adjustment mechanism is arranged outside the shell and comprises a guide structure, a clamp and a transmission assembly, the clamp is used for clamping a guide rod of the sliding micrometer, when the clamp clamps the guide rod, the length direction of the guide rod, the guide direction of the guide structure and the length direction of the measuring tube are the same, the clamp is arranged on the guide structure and connected with the transmission assembly, and the transmission assembly can drive the clamp and the guide rod to move along the guide direction of the guide structure so as to drive the probe to move to two measuring rings.
Preferably, the guide structure is a guide rod, the length direction of the guide rod is the same as the length direction of the measuring tube, a first through hole is formed in the fixture, one end of the guide rod is fixed on the shell, and the other end of the guide rod extends into the first through hole so that the fixture is sleeved on the guide rod.
Preferably, the transmission assembly includes relatively the fixed mounting that sets up of guide bar, rotationally set up screw rod on the fixed mounting and setting are in the hand wheel of screw rod tip, the axis direction of screw rod with the length direction of guide bar is unanimous, be equipped with on the anchor clamps with screw rod matched with screw hole, work as when the hand wheel rotates, the screw rod rotates, drives anchor clamps are followed the length direction displacement of guide bar.
Preferably, anchor clamps include first clamping part and set up the second clamping part of the upper end of first clamping part, first through-hole with the screw hole all sets up on the first clamping part, the upper end of first clamping part with the lower extreme of second clamping part all is equipped with the arc wall, be equipped with the second through-hole on the second clamping part, when passing through the fastener the second through-hole with during the first clamping part, two the arc wall constitutes and is used for supplying the third through-hole that the guide arm stretched into, so that first clamping part with the second clamping part presss from both sides tightly the guide arm.
Preferably, the casing is a strip structure and the cross section is a rectangle, the measuring tube is located at the center in the casing, and the first opening is arranged at the end of the rectangle structure.
Preferably, a support used for fixing the measuring tube in the shell is arranged in the shell, the support comprises a base body and an annular part arranged on the base body, the base body is fixed at the bottom in the shell, and the annular part is sleeved on the periphery of the measuring tube.
Preferably, the tip of casing is equipped with the second trompil, second trompil department is equipped with sealed lid, just the edge of sealed lid with the edge of second trompil is connected, the center of sealed lid is equipped with first trompil, just sealed lid is close to one side of casing is equipped with and is used for waterproof sponge.
Preferably, the shape and size of the first opening are the same as those of the cross section of the measuring tube.
Preferably, the outer surface of the housing is provided with a handle for carrying the assay device.
The invention also provides a method for calibrating the slide micrometer, which is characterized by comprising the following steps:
a guide rod of the slide micrometer extends into a third through hole of the clamp, a probe connected with the guide rod extends into the measuring tube, and a fastener penetrates through the second through hole to fasten the second clamping part so that the clamp clamps the guide rod;
opening a reading computer of the slide micrometer, rotating a hand wheel to enable the clamp to drive a guide rod and a probe of the slide micrometer to move along the guide direction of the guide rod, when indicator lights on the reading computer are completely turned off and position reading on a display screen of the reading computer is zero, indicating that the displacement difference delta S between induction coils at two ends of the probe and corresponding measuring rings is equal, and stopping rotating the hand wheel;
judging whether the probe is in a state capable of observing at the moment: if the temperature and the humidity on the display screen on the reading computer are respectively consistent with the temperature and the humidity measured by the humidity-temperature meter, and the actual measurement value on the display screen is a first distance value, the probe is in a state capable of carrying out observation; if not, the probe is not in a state in which observation can be performed.
In the technical scheme provided by the invention, the calibrating device comprises a shell, a measuring tube, two measuring rings, a humidity-temperature meter and a fine adjustment mechanism. The measuring tube is arranged in the shell and comprises a first port and a second port, the first port and the second port are both provided with openings, the second port is communicated with the space inside the shell, the edge of the first port is connected with the shell, the shell is provided with a first opening corresponding to the position of the first port, and a probe of the sliding micrometer extends into the measuring tube from the first opening and the first port; the two measuring rings are arranged on the measuring tube, and the distance value between the two measuring rings is equal to the standard length of the probe; the humidity-temperature meter is arranged on the shell and used for measuring the humidity and the temperature in the measuring pipe; the fine adjustment mechanism comprises a guide structure, a clamp and a transmission assembly, wherein the clamp is used for clamping a guide rod, when the clamp clamps the guide rod, the length direction of the guide rod, the guide direction of the guide structure and the length direction of the measuring tube are the same, the clamp is arranged on the guide structure and connected with the transmission assembly, and the transmission assembly can drive the clamp and the guide rod to move along the guide direction of the guide structure so as to drive the probe to move between the two measuring rings. So set up, can remove the positive intermediate position of two rings through fine-tuning with the probe of slip micrometer to, because only make the probe be in between two rings can just begin to survey the judgement, when the probe is in accurate position, the measured value that shows on the reading computer through the slip micrometer is the distance value between two rings, and the temperature that the probe that shows detected, whether humidity and the temperature that the wet thermometer detected, humidity are unanimous mutually, thereby can judge whether the probe is in the state that can develop the observation, avoid the probe state to judge and inaccurately cause measuring error.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the construction of an assay device for a slide micrometer in an embodiment of the invention;
FIG. 2 is a side cross-sectional view of an assay device for a slide micrometer in an embodiment of the invention;
FIG. 3 is a front view of an assay device for a slide micrometer in an embodiment of the invention;
FIG. 4 is a schematic diagram of the housing and the measuring tube of the assay device in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a probe in an embodiment of the invention;
FIG. 6 is a schematic diagram of a fine tuning screw according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the probe capable of performing observation and the probe incapable of performing observation in the embodiment of the present invention in terms of their exact positions;
FIG. 8 is a signal overlay of two induction coils of a probe capable of performing an observation and a signal overlay of two induction coils of a probe incapable of performing an observation in an embodiment of the present invention.
In FIGS. 1-8:
1-shell, 101-first opening, 102-second opening, 2-measuring tube, 201-first port, 202-second port, 3-measuring ring, 4-hygrothermograph, 5-guide rod, 6-clamp, 601-first clamping part, 602-second clamping part, 7-first through hole, 8-fixing part, 9-screw rod, 10-hand wheel, 11-threaded hole, 12-fastener, 13-third through hole, 14-support, 1401-seat body, 1402-annular part, 15-sealing cover, 16-handle, 17-probe and 18-induction coil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
An object of the present embodiment is to provide a calibrating apparatus for a slide micrometer, which solves the problems in the prior art that the state of a probe of the slide micrometer cannot be accurately and quickly calibrated, whether the probe is suitable for observation or not, and inaccurate determination causes measurement errors in the probe during observation.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1 to 6, in the present embodiment, the calibrating apparatus includes a housing 1, a measuring tube 2, two measuring rings 3, a humidity-temperature meter 4, and a fine-tuning mechanism. Wherein, survey pipe 2 sets up in casing 1, survey pipe 2 includes first port 201 and second port 202, as shown in fig. 2, the right-hand member of surveying pipe 2 is first port 201, the left end of surveying pipe 2 is second port 202, first port 201 and second port 202 are all the opening, the edge of first port 201 is connected with casing 1, be equipped with the first trompil 101 corresponding with the position of first port 201 on casing 1, so, the probe 17 of slide micrometer just can stretch into in surveying pipe 2 by first trompil 101 and first port 201. Both rings 3 are arranged on the pipe 2, as shown in fig. 2 and 5, the distance between the two rings 3 is a first distance value equal to the standard length of the probe 17, preferably 1m, and the pipe 2 is excellent in properties with a constant distance between the two rings 3. The humidity/temperature meter 4 is used for measuring the humidity and temperature inside the measurement tube 2, and although the humidity/temperature meter 4 is provided on the housing 1 and located outside the measurement tube 2, the space inside the measurement tube 2 communicates with the space inside the housing 1, that is, the space between the outside of the measurement tube 2 through the second port 202, and it is equivalent to the humidity/temperature in the space inside the measurement tube 2 measured by the humidity/temperature meter 4 being the same as the humidity/temperature inside the measurement tube 2. The fine adjustment mechanism comprises a guide structure, a clamp 6 and a transmission assembly, wherein the clamp 6 is used for clamping a guide rod, when the clamp 6 clamps the guide rod, the length direction of the guide rod, the guide direction of the guide structure and the length direction of the measuring tube 2 are the same, so that the guide rod can move along the guide direction of the guide structure, the probe 17 can parallelly extend into the measuring tube 2 relative to the measuring tube 2, the condition that the probe 17 inclines in the measuring tube 2 cannot occur, otherwise, even if the probe 17 is qualified and can carry out detection, the detection result detected by the detection device is unqualified, and the detection result is wrong; the clamp 6 is arranged on the guide structure, so the clamp 6 can drive the guide rod to move along the guide direction of the guide structure, the clamp 6 is connected with the transmission assembly, the transmission assembly provides power for the clamp 6 to move along the guide direction of the guide structure, and the probe 17 stops moving until just moving between the two measuring rings 3.
It should be noted that, a general sliding micrometer includes a probe 17, a cable, a guide rod, and a reading computer, the probe 17 is fixedly connected with the guide rod, the probe 17 is electrically connected with the reading computer through the cable, high-precision induction coils 18 are respectively arranged at two ends of the probe 17, the distance between the two induction coils 18 is also 1m, and the two induction coils 18 correspond to the two measuring rings 3; the reading computer is internally provided with a processor, the reading computer is provided with a row of indicator lights and a display screen, and the indicator lights can be replaced by light emitting diodes or can be displayed by light beams on the display screen. The probe 17 slowly extends into the measuring tube 2, when the two induction coils 18 respectively and slowly approach the corresponding measuring rings 3, a row of indicator lights of the reading computer are turned on, and when the induction coils 18 move to the parts which are overlapped with the corresponding measuring rings 3, as shown in fig. 7, the row of indicator lights are turned off, namely the probe 17 is positioned between the two measuring rings 3, but at the moment, the parts of the measuring rings 3 at the A end and the B end which are overlapped with the induction coils 18 are not equal, namely two delta S are not equal, and each induction coil 18 can transmit the delta S signal which is respectively detected to a processor of the reading computer. And, the probe 17 is equipped with the linear displacement transducer, the data that the linear displacement transducer is triggered and measured are transmitted to the reading computer through the cable, specifically, the displacement transducer is a linear device belonging to metal induction, the linear transducer will produce an alternating magnetic field in the induction surface after switching on the power, when the measuring ring approaches this induction surface, produce the eddy current in the measuring ring and absorb the energy of the oscillator, make the output amplitude of the oscillator attenuate linearly, confirm the distance between end of the measuring ring and probe 17 according to the variable quantity information of the decrement, the signal that the linear transducer detects is transmitted to the reading computer and processed and displayed the data on the display screen. The probe 17 is also provided with a humidity sensor and a temperature sensor which can sense the temperature and the humidity in the measuring tube so as to transmit humidity and temperature signals to a reading computer. The temperature and humidity inside the measuring tube 2 detected by the probe 17 can be displayed on the display screen.
In addition, the display screen can also display the actual measurement value and the actual position reading of the probe 17, wherein the position reading is the deviation value of the optimal position of the probe 17, namely the probe 17 is just positioned in the middle of the two measuring rings 3, namely the induction coils 18 at the two ends of the probe 17 are respectively overlapped with the two measuring rings, and at the moment, a row of indicator lamps on the display screen can be turned off by an indication signal of a processor in a reading computer; and the two coincident parts are the same, namely the two deltas are opposite in direction and equal in value, the position reading shows 0, which indicates that the probe 17 has no offset, for example, the probe 17 is offset from the middle position of the two measuring rings by a distance of 0.1m, and the position reading of the reading computer shows 0.1, namely, the probe 17 is offset from the optimal position by 0.1 m. The actual measurement value is the distance by which the probe 17 itself is offset from the nominal value of 1m, for example, if the length of the probe 17 itself is indeed 1m, the actual measurement value shows 1 m; if the probe 17 is deformed to be lengthened or worn by 0.01m, the actual measurement values show 1.01m and 0.99 m.
Specifically, the operation principle is as shown in fig. 7 and 8, as shown in the upper half of the diagram in fig. 7, the distance between the ring at the end a and the ring at the end B is 1m, the length of the probe 17 is equal to the distance between the two rings, the probe 17 is exactly located at the middle position between the two rings, the signal superposition diagram of the induction coils 18 at the two ends of the probe 17 is shown in the superposed signal diagram above fig. 8, at this time, the position reading is 0, which indicates that the probe 17 is displaced to the accurate position, and the actual measurement value is 1m, which indicates that the detected probe 17 is suitable for observing; as shown in the lower half of fig. 7, the distance between the measurement ring at the end a and the measurement ring at the end B is 1m, but the length of the probe 17 is significantly less than 1m, the displacement differences between the coils at the two ends of the probe 17 and the corresponding measurement rings are both Δ S, the position reading is 0, the indicator light is off, at this time, it indicates that the probe is displaced to an accurate position, then the two induction coils 18 transmit Δ S signals to the reading computer, the processor inside the reading computer outputs a result of 1m +2 Δ S on the display screen after processing, the actual length of the probe 17, that is, the actual measurement value is 1m +2 Δ S, and thus it is determined that the probe 17 cannot perform observation, and the signal superposition graphs of the induction coils 18 at the two ends of the probe 17 are shown in the superposed signal graph below fig. 8. According to the working principle, the position reading and the actual measurement value of the probe 17 can be obtained. Therefore, whether the probe 17 is qualified or not, the position in fig. 7 is moved to be a precondition for starting the determination as to whether the probe 17 can perform the observation. The slide micrometer is a device in the prior art, and specific working principles are not described in detail herein.
With this arrangement, the probe 17 of the sliding micrometer can be moved to between the two measuring rings 3 by the fine adjustment mechanism, because the observation and determination can be started only when the probe 17 is located between the two measuring rings 3, when the row of indicator lights on the reading computer are all turned off and the position reading on the display screen is 0, that is, in the case of fig. 7, and the probe 17 is located at the middle position of the two measuring rings, the fine adjustment structure is stopped to indicate that the probe 17 is at the correct position, the determination can be started, if the temperature and humidity detected by the probe 17 displayed on the display screen are consistent with the temperature and humidity displayed by the humidity and temperature meter 4 on the housing 1 of the calibrating device, and the actual measurement value displayed on the display screen is 1m, that is, in the case of the upper half of fig. 7 and the upper half of fig. 8, it is explained that the probe 17 has adapted to the field surrounding environment and has no drift error, the state is good, can normally measure, otherwise, temperature and humidity and actual measurement value three arbitrary reading inconsistency or have the deviation to indicate that probe 17 can not carry out the observation, consequently this process can judge probe 17 accurately fast whether be in can carry out the state of observing, avoids probe 17 state to judge inaccurate and causes measuring error. Moreover, the verification equipment can be conveniently brought to a construction site, verification can be performed in a short time on the construction site, and the accuracy of verification results can be ensured.
As an alternative embodiment, the guiding structure is a guiding rod 5, as shown in fig. 1, fig. 2 and fig. 6, the length direction of the guiding rod 5 is the same as the length direction of the measuring tube 2, one end of the guiding rod 5 is fixed on the housing 1, the fixture 6 is provided with a first through hole 7, and the other end of the guiding rod 5 extends into the first through hole 7, that is, the fixture 6 is sleeved on the guiding rod 5, so that when the transmission assembly provides power, the fixture 6 drives the guiding rod and the probe 17 to displace along the guiding direction of the guiding rod 5, that is, along the length direction of the measuring tube 2. In the preferred embodiment, the guide rods 5 are arranged in two juxtaposed relationship, and the clamp 6 is provided with two first through holes 7 for the two guide rods 5 to extend through.
As an alternative embodiment, the transmission assembly includes a fixing member 8, a screw rod 9 and a hand wheel 10, as shown in fig. 1, 3 and 6, the fixing member 8 is fixedly disposed relative to the guide rod 5, specifically, two through holes are provided on the fixing member 8, and the end portions of the two guide rods 5 also pass through the two through holes, but the fixing member 8 and the guide rods 5 are in close contact, and the two do not have relative displacement. The screw 9 passes through the fixing part 8, the axial direction of the screw 9 is the same as the guiding direction of the guide rod 5, the screw 9 is rotatably arranged on the fixing part 8, specifically, a shaft shoulder for positioning is arranged at the position where the screw 9 passes through the through hole of the fixing part 8, and the screw 9 can rotate relative to the shaft shoulder but can not axially displace relative to the shaft shoulder. The tip of screw rod 9 still is equipped with hand wheel 10, preferably, hand wheel 10 is located the one side that mounting 8 deviates from anchor clamps 6, when hand rotation hand wheel 10 like this, screw rod 9 rotates, mounting 8 is motionless, and the direction that sets up of screw rod 9 is unanimous with the length direction of guide bar 5, be equipped with on anchor clamps 6 with screw rod 9 matched with screw hole 11, the axis direction of screw hole 11 also sets up the direction the same with screw rod 9, like this when hand wheel 10 rotates, the external screw thread of screw rod 9 cooperatees with the internal thread of screw hole 11, screw rod 9 only rotates and does not take place axial displacement, so only can make anchor clamps 6 remove, anchor clamps 6 can drive the guide arm along the length direction displacement of guide bar.
So set up, refined the concrete structure of transmission assembly, just can direct control anchor clamps 6 and the removal of guide arm through the rotation of hand wheel 10, and the moving direction of anchor clamps 6 and guide arm can be controlled to the rotation direction of control hand wheel 10.
As an alternative embodiment, the clamp 6 includes a first clamping portion 601 and a second clamping portion 602, the second clamping portion 602 is disposed at the upper end of the first clamping portion 601, the first through hole 7 and the threaded hole 11 are disposed on the first clamping portion 601, as shown in fig. 6, the upper end of the first clamping portion 601 and the lower end of the second clamping portion 602 are both provided with arc-shaped slots, the arc-shaped slot of the first clamping portion 601 and the arc-shaped slot of the second clamping portion 602 can jointly form a cylindrical third through hole 13, and the second clamping portion 602 is further provided with a second through hole, that is, the length of the second through hole is the same as the distance between the upper end and the lower end of the second clamping portion 602, as shown in fig. 3 and 6, a guide rod is placed on the arc-shaped slot of the first clamping portion 601, and then the second clamping portion 602 is covered, which is equivalent to that the guide rod passes through the third through hole 13, or directly extends into between the two arc-shaped slots, and then the fastener 12 passes through the second through hole and the first clamping portion 601, the first clamping portion 601 and the second clamping portion 602 are fixedly and tightly connected with each other, so that the first clamping portion 601 and the second clamping portion 602 clamp the guide rod of the slide micrometer.
So set up, through the tight and loosen of screwing of fastener 12 can realize anchor clamps 6 tight with loosen the clamp of guide arm, when making the guide arm pass in the third through-hole 13 that two arc walls constitute moreover, ascending error can not appear in the guide arm, and control process is simple and convenient.
In the preferred embodiment, the housing 1 is a strip-like structure with a rectangular cross-section, as shown in fig. 1 and 2, the measuring tube 2 is located in the center of the housing 1, and the first opening 101 is provided at the end of the rectangular structure. Preferably, the housing 1 is square in cross-section, as shown in fig. 1.
As an alternative embodiment, a support 14 is arranged in the casing 1, the support 14 is used for fixing the measuring tube 2 in the casing 1, the support 14 comprises a seat body 1401 and a ring portion 1402, as shown in fig. 5, the ring portion 1402 is arranged on the seat body 1401, the seat body 1401 is fixed at the bottom in the casing 1, and the ring portion 1402 is sleeved on the outer periphery of the measuring tube 2. Preferably, the seats 14 are provided in two, as shown in figure 5.
So set up, can support and fixed survey pipe 2 better through the support 14 that is equipped with annular portion 1402, make survey pipe 2 be located casing 1 firmly, set up two supports 14 and can improve the stability of survey pipe 2 better.
As an alternative embodiment, the end of the housing 1 is provided with a second opening 102, as shown in fig. 4, a sealing cover 15 is provided at the second opening 102, and preferably, the shape and size of the second opening 102 are the same as the shape and size of the outer periphery of the sealing cover 15, and the shape and size of the cross section of the housing 1, and are all in a square structure. As shown in fig. 6, the edge of the sealing cover 15 and the edge of the second opening 102 may be connected by screws, the center of the sealing cover 15 is provided with a first opening 101, and a sponge is further provided at a side of the sealing cover 15 close to the housing 1, and the sponge can be used for preventing water. In the preferred embodiment, the sealing cap 15 is of the same shape and size as the sponge, and has a hole in the middle to allow the probe 2 to communicate with the outside atmosphere.
So set up, set up in the sponge can avoid external moisture to get into casing 1 from casing 1 and sealed 15 gap within a definite time, dampproofing damp proof to avoid influencing the measuring value of wet thermometer 4.
Preferably, the shape and size of the first opening 101 are the same as the shape and size of the cross-section of the measuring tube 2.
As an alternative embodiment, the outer surface of the housing 1 is provided with a handle 16, so that when it is desired to transfer the position of the assay device, the position of the assay device can be taken away or transferred directly by lifting the handle 16 by hand.
The calibrating apparatus for the slide micrometer is specifically described with reference to the above embodiments, in this embodiment, the calibrating apparatus for the slide micrometer includes a housing 1, a measuring tube 2 disposed in the housing 1, two measuring rings 3 disposed on the measuring tube 2, a humidity-temperature meter 4 disposed on the housing 1 and used for measuring humidity and temperature in the measuring tube 2, a guide rod 5, a clamp 6 for clamping the guide rod, and a transmission assembly, and a support 14 for fixing the measuring tube 2 in the housing 1 is further disposed in the housing 1. The shell 1 is of a strip structure, the cross section of the shell is rectangular, the measuring tube 2 is positioned in the center of the shell 1, the first opening 101 is formed in the end portion of the rectangular structure, the measuring tube 2 comprises a first port 201 and a second port 202, the first port 201 and the second port 202 are both open, the edge of the first port 201 is connected with the shell 1, the shell 1 is provided with the first opening 101 corresponding to the position of the first port 201, and the probe 17 of the sliding micrometer extends into the measuring tube 2 through the first opening 101 and the first port 201; the distance value between the two measuring rings 3 is equal to the standard length of the probe 17; the length direction of the guide rod 5 is the same as that of the measuring tube 2, a first through hole 7 is formed in the clamp 6, one end of the guide rod 5 is fixed on the shell 1, and the other end of the guide rod 5 extends into the first through hole 7, so that the clamp 6 is sleeved on the guide rod 5; the transmission assembly comprises a fixing piece 8 fixedly arranged relative to the guide rod 5, a screw rod 9 arranged on the fixing piece 8 and a hand wheel 10 arranged at the end part of the screw rod 9, the axis direction of the screw rod 9 is consistent with the length direction of the guide rod 5, a threaded hole 11 matched with the screw rod 9 is formed in the clamp 6, and when the hand wheel 10 rotates, the screw rod 9 rotates and drives the clamp 6 to move along the length direction of the guide rod 5. The clamp 6 comprises a first clamping portion 601 and a second clamping portion 602 arranged at the upper end of the first clamping portion 601, a first through hole 7 and a threaded hole 11 are arranged on the first clamping portion 601, the upper end of the first clamping portion 601 and the lower end of the second clamping portion 602 are both provided with arc-shaped grooves, a second through hole is arranged on the second clamping portion 602, when a fastener 12 penetrates through the second through hole and the first clamping portion 601, the two arc-shaped grooves form a third through hole 13 for a guide rod to extend into, so that the first clamping portion 601 and the second clamping portion 602 clamp the guide rod. The end of the shell 1 is provided with a sealing cover 15, one side of the sealing cover 15 close to the shell 1 is provided with a sponge for water prevention, and the outer surface of the shell 1 is also provided with a handle 16 for carrying a calibration device.
So set up, can accurately remove the probe 17 of slide micrometer to between two becket 3 through fine-tuning, when probe 17 is in this accurate position, whether the measured value that shows on the reading computer through the slide micrometer is the distance value between two becket 3 to and the temperature that the probe 17 that shows detected, humidity are unanimous with temperature and humidity that the wet thermometer 4 detected, thereby can accurately judge fast whether probe 17 is in the state that can develop the observation.
The invention also provides a method for calibrating the slide micrometer, which comprises the following steps:
in a first step, the probe 17 and guide rods of the slide micrometer are mounted on the assay device. Specifically, a guide rod of the external sliding micrometer extends into the third through hole 13 of the fixture 6, namely the guide rod is located between the arc-shaped grooves of the first clamping portion 601 and the second clamping portion 602, and the probe 17 connected with the guide rod extends into the measuring tube 2, and then the probe 17 passes through the second through hole and is screwed into the first clamping portion 601 through the fastener 12, so that the second clamping portion 602 is fixed relative to the first clamping portion 601, and the fixture 6 clamps the guide rod, preferably, the calibrating device is horizontally placed firstly, then the guide rod is clamped by the fixture 6, and the probe 17 is horizontally arranged in the measuring tube 2, namely, the direction of the probe 17 is consistent with the axis of the measuring tube 2.
In the second step, the probe 17 is adjusted to the correct position. Specifically, a reading computer of the slide micrometer is turned on, then the hand wheel 10 is rotated, the clamp 6 moves along the guide direction of the guide rod 5 while the hand wheel 10 rotates, and simultaneously the guide rod and the probe 17 of the slide micrometer are driven to move along the guide direction of the guide rod 5, when the indicator lights on the reading computer are all turned off and the position reading on the display screen of the reading computer is zero, the probe 17 is explained to be displaced to the middle position between the two measuring rings 3, the displacement difference Δ S between the induction coils 18 at the two ends of the probe 17 and the corresponding measuring rings 3 is equal, as shown in fig. 7 and fig. 8, at this moment, the probe 17 is explained to be located at the correct measuring position, the hand wheel 10 is stopped to stop the movement of the probe 17 and the guide rod, and the state of the probe 17 can be judged directly through the display condition of the reading computer of the slide micrometer in the next step.
And thirdly, directly judging. Specifically, it is determined whether the probe 17 is in a state capable of performing observation at this time, and two conditions need to be satisfied, the first is that the temperature and humidity on the display screen of the reading computer are respectively consistent with the temperature and humidity measured by the humidity-temperature meter 4, that is, the temperature and humidity detected by the probe 17 are accurate, and the second is that the actual measurement value on the display screen is the first distance value, that is, the actual measurement value is 1 m. If both conditions are satisfied, it indicates that the probe 17 itself has not been subjected to zero drift, abrasion, or deformation, and the probe 17 is in a normal state, has been adapted to the surrounding environment, and indicates that the probe 17 is in a state capable of performing observation. If not, that is, if any of the conditions is not met, it indicates that the probe 17 is not in a state in which observation can be performed.
So set up, whether utilize calibrating installation to slide micrometer's probe 17 qualified verification method of going on, whole process is simple and convenient, easy to operate, at last judgement stage, directly with the help of the display data of the reading computer of the slide micrometer who will judge, can directly obtain the conclusion that whether probe 17 can carry out the observation, it is more directly perceived.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the invention comprise basic schemes, are independent from each other and are not restricted with each other, but can be combined with each other under the condition of no conflict, so that multiple effects are realized together.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An apparatus for calibrating a slide micrometer, comprising:
a housing (1);
the measuring tube (2) is arranged in the shell (1), the measuring tube (2) comprises a first port (201) and a second port (202), the first port (201) and the second port (202) are both provided with openings, the edge of the first port (201) is connected with the shell (1), a first opening (101) corresponding to the position of the first port (201) is arranged on the shell (1), and a probe (17) of an external sliding micrometer extends into the measuring tube (2) from the first opening (101) and the first port (201);
the two measuring rings (3) are arranged on the measuring tube (2), the distance between the two measuring rings (3) is a first distance value, and the first distance value is the same as the standard length of a probe (17) of the sliding micrometer;
the humidity-temperature meter (4) is arranged on the shell (1) and is used for measuring the humidity and the temperature in the measuring tube (2);
the fine adjustment mechanism is arranged outside the shell (1), and comprises a guide structure, a clamp (6) and a transmission assembly, wherein the clamp (6) is used for clamping a guide rod of the sliding micrometer, when the clamp (6) clamps the guide rod, the length direction of the guide rod is the same as the guide direction of the guide structure, and the length direction of the measuring tube (2) is the same, the clamp (6) is arranged on the guide structure and connected with the transmission assembly, and the transmission assembly can drive the clamp (6) and the guide rod to be displaced along the guide direction of the guide structure so as to drive the probe (17) to be moved to two between the measuring rings (3).
2. The calibrating apparatus for the slide micrometer as claimed in claim 1, wherein the guiding structure is a guiding rod (5), the length direction of the guiding rod (5) is the same as the length direction of the measuring tube (2), the fixture (6) is provided with a first through hole (7), one end of the guiding rod (5) is fixed on the housing (1), and the other end of the guiding rod (5) extends into the first through hole (7) so that the fixture (6) is sleeved on the guiding rod (5).
3. The calibrating apparatus for the slide micrometer as claimed in claim 2, wherein the transmission assembly comprises a fixing member (8) fixedly arranged relative to the guide rod (5), a screw rod (9) rotatably arranged on the fixing member (8), and a hand wheel (10) arranged at an end of the screw rod (9), wherein an axial direction of the screw rod (9) is consistent with a length direction of the guide rod (5), the clamp (6) is provided with a threaded hole (11) matched with the screw rod (9), and when the hand wheel (10) rotates, the screw rod (9) rotates and drives the clamp (6) to displace along the length direction of the guide rod (5).
4. The calibrating apparatus for a slide micrometer according to claim 3, wherein the fixture (6) comprises a first clamping portion (601) and a second clamping portion (602) disposed at an upper end of the first clamping portion (601), the first through hole (7) and the threaded hole (11) are disposed on the first clamping portion (601), an upper end of the first clamping portion (601) and a lower end of the second clamping portion (602) are both provided with arc-shaped grooves, the second clamping portion (602) is provided with a second through hole, and when a fastener (12) passes through the second through hole and the first clamping portion (601), the two arc-shaped grooves form a third through hole (13) for the guide rod to extend into so that the first clamping portion (601) and the second clamping portion (602) clamp the guide rod.
5. The calibrating apparatus for a slide micrometer according to claim 1, wherein the housing (1) has a strip-like structure and a rectangular cross-section, the measuring tube (2) is centrally located in the housing (1), and the first opening (101) is provided at an end of the rectangular structure.
6. The calibrating apparatus for slide micrometer according to claim 5, wherein the housing (1) is provided with a support (14) for fixing the measuring tube (2) in the housing (1), the support (14) comprises a base body (1401) and a ring-shaped portion (1402) arranged on the base body (1401), the base body (1401) is fixed on the bottom of the housing (1), and the ring-shaped portion (1402) is sleeved on the periphery of the measuring tube (2).
7. The calibrating apparatus for the slide micrometer as claimed in claim 5, wherein the end of the housing (1) is provided with a second opening (102), a sealing cover (15) is provided at the second opening (102), the edge of the sealing cover (15) is connected with the edge of the second opening (102), the center of the sealing cover (15) is provided with the first opening (101), and a sponge for preventing water is provided on one side of the sealing cover (15) close to the housing (1).
8. The slide micrometer calibrating device according to claim 1, wherein the first opening (101) has the same shape and size as the cross-section of the measuring tube (2).
9. The calibrating device for a slide micrometer according to claim 1, characterized in that the outer surface of the housing (1) is provided with a handle (16) for carrying the calibrating device.
10. A method of calibrating a slide micrometer, comprising:
a guide rod of the slide micrometer extends into a third through hole (13) of the clamp (6), a probe (17) connected with the guide rod extends into the measuring tube (2), and a fastener (12) penetrates through the second through hole to fasten a second clamping part (602) so that the clamp (6) clamps the guide rod;
opening a reading computer of the sliding micrometer, rotating a hand wheel (10) to enable a clamp (6) to drive a guide rod and a probe (17) of the sliding micrometer to move along the guide direction of a guide rod (5), when indicator lamps on the reading computer are completely turned off and position reading on a display screen of the reading computer is displayed to be zero, indicating that displacement differences delta S between induction coils (18) at two ends of the probe (17) and corresponding measuring rings (3) are equal, and stopping rotating the hand wheel (10);
judging whether the probe (17) is in a state capable of observation at the moment: if the temperature and the humidity on the display screen of the reading computer are respectively consistent with the temperature and the humidity measured by the humidity-temperature meter (4), and the actual measurement value on the display screen is a first distance value, the probe (17) is in a state capable of carrying out observation; if not, the probe (17) is not in a state in which observation can be performed.
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| CN201910971697.XA CN110672059B (en) | 2019-10-14 | 2019-10-14 | Calibrating device and calibrating method for slide micrometer |
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| CN201910971697.XA CN110672059B (en) | 2019-10-14 | 2019-10-14 | Calibrating device and calibrating method for slide micrometer |
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| CN110672059B (en) | 2020-08-11 |
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