CN110849282B - Measuring equipment and method - Google Patents
Measuring equipment and method Download PDFInfo
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- CN110849282B CN110849282B CN201911204516.7A CN201911204516A CN110849282B CN 110849282 B CN110849282 B CN 110849282B CN 201911204516 A CN201911204516 A CN 201911204516A CN 110849282 B CN110849282 B CN 110849282B
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- displacement sensor
- laser displacement
- measuring
- reading head
- cross beam
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The application discloses measuring equipment and method, measuring equipment include measuring frame and the crossbeam of symmetry setting on measuring frame, be provided with detection device on the crossbeam, detection device includes: the first laser displacement sensor and the second laser displacement sensor are symmetrically arranged about the center point of the cross beam; the measuring scale comprises a first reading head and a second reading head which are symmetrically arranged; the measurement end point of the first reading head is the measurement starting point of the first laser displacement sensor, and the first reading head and the first laser displacement sensor synchronously slide; the measurement end point of the second reading head is the measurement starting point of the second laser displacement sensor, and the second reading head and the second laser displacement sensor slide synchronously; and the test controller is electrically connected with the detection device. The problem of among the prior art to the symmetry precision of measuring part both sides gauge not accurate enough is solved.
Description
Technical Field
The application belongs to the technical field of rail vehicle measurement, and particularly relates to measuring equipment and a measuring method.
Background
The variable-gauge train is an advanced technical means for solving the problem of inter-regional railway transport of different gauges, can realize rapid and efficient gauge adjustment without stopping to adapt to the running states of different gauges, and the variable-gauge bogie is a key component of the train. However, the ground rail transfer facility and the bogie have higher matching precision, so the track gauge of the rail transfer is decisive for the success of the rail transfer.
However, the axle box is transversely centered, the wheel gauge positioning accuracy reaches +/-0.5 mm, and the nominal size is larger, about 2 m. Therefore, during the installation process of the ground track-changing facility, the requirements on the accuracy and the symmetry degree of the transverse dimension of the track-changing gauge are high.
However, the prior art has the problem that the precision and the symmetry degree are not accurate enough when the track gauge from the two sides of the symmetrical part to the center line of the ground track-changing facility is measured.
Disclosure of Invention
The application aims to provide measuring equipment and a measuring method so as to solve the problem that in the prior art, the symmetry precision of the track gauges on two sides of a symmetrical component is not accurate enough.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
the utility model provides a measuring equipment, includes that measuring rack and symmetry set up the crossbeam on measuring rack, be provided with detection device on the crossbeam, detection device includes:
a first laser displacement sensor;
the first laser displacement sensor and the second laser displacement sensor are symmetrically arranged around the center point of the beam; the first laser displacement sensor and the second laser displacement sensor can slide back and forth along the extending direction of the cross beam;
the measuring scale comprises a first reading head and a second reading head which are symmetrically arranged about the central point of the beam;
the measurement end point of the first reading head is the measurement starting point of the first laser displacement sensor, and the first reading head and the first laser displacement sensor synchronously slide;
the measurement end point of the second reading head is the measurement starting point of the second laser displacement sensor, and the second reading head and the second laser displacement sensor slide synchronously;
and the test controller is electrically connected with the detection device.
Preferably, the cross beam is provided with a slide rail, the slide rail extends from one end of the cross beam to the other end of the cross beam, and the slide rail is symmetrically provided with a first slide block and a second slide block;
the first sliding block can slide along the extending direction of the sliding rail, and the first laser displacement sensor and the first reading head are both arranged on the first sliding block;
the second slider can slide along the extending direction of the slide rail, and the second laser displacement sensor and the second reading head are both installed on the second slider.
Preferably, the measuring scale comprises magnetic grid bars, the magnetic grid bars are arranged on the side end face of the cross beam, and the magnetic grid bars extend from one end of the cross beam to the other end; the first reading head and the second reading head are both arranged corresponding to the magnetic grid strips so as to realize the acquisition and conversion of the magnetic grid strip signals.
Preferably, both ends of the cross beam are provided with limit stop stops.
Preferably, the measuring rack comprises a mounting plate, a moving member is mounted on the mounting plate, the moving member can slide along the length direction of the mounting plate, and the mounting plate and the cross beam are connected together through the moving member to form a cross structure.
Preferably, the measuring rack comprises a mounting seat and a transmission piece, the mounting plate is fixed on the mounting seat, one end of the transmission piece is rotatably arranged on the mounting seat, and the other end of the transmission piece extends along the length direction of the mounting plate.
Preferably, the transmission part comprises a screw rod and a screw rod nut which are connected through threads, one end of the screw rod is rotatably arranged on the mounting seat, and the other end of the screw rod extends along the length direction of the mounting plate; the lead screw nut is fixed on the moving piece.
Preferably, guide rods are respectively arranged on two sides of the screw rod, the guide rods are fixed on the measuring frame, three through holes are formed in the moving member, and the moving member is slidably sleeved outside the screw rod and the guide rods through the through holes.
Preferably, a locking mechanism is installed on the measuring frame, the locking mechanism is sleeved outside the lead screw, and the lead screw is prevented from rotating through the locking mechanism.
Preferably, a manual adjusting device is mounted on the screw rod.
A measurement method applied to the measurement apparatus of any one of the above, the measurement method comprising:
the measuring equipment is adjusted and fixed at the center line of the ground track transfer facility, and the measuring equipment is opened for measurement;
the first laser displacement sensor measures the actual distance Lc from the position of the first laser displacement sensor to the right side of the measured component1(ii) a The actual distance Lc from the position of the second laser displacement sensor to the left side of the measured component is measured by the second laser displacement sensor2；
The first reading head is induced by the magnetic grid bars to measure the actual distance Dc from the position of the first laser displacement sensor to the center of the cross beam1；
The second reading head senses the magnetic grid bars to measure the actual distance Dc from the position of the second laser displacement sensor to the center of the beam2；
The detection means will detect the actual distance Lc1、Lc2、Dc1、Dc2The data are transmitted to the test controller, the test controller processes the data through an internal program, and finally the actual distance value Lc between the right side and the left side of the measuring component and the center line of the ground track-changing facility is obtained1+Dc1、Lc2+Dc2。
Compared with the prior art, the application has the advantages and positive effects that:
this application is through first laser sensor and the second laser sensor of installation symmetry setting on measuring equipment's crossbeam, still installs the dipperstick simultaneously, and the measurement terminal point of the first reading head of dipperstick is first laser displacement sensor's measurement starting point, the measurement terminal point of second reading head is second laser displacement sensor's measurement starting point, and the laser sensor and the dipperstick cooperation that the symmetry set up are measured to gained data is handled by test controller, can be according to two laser displacement sensor positions on the crossbeam from this, directly reachs the distance that is surveyed the part both sides and arrives ground derailment facility central line respectively. Therefore, under the action of the measuring device, the accuracy of measuring the symmetric precision of the track gauges on the two sides of the symmetric part is improved, and the problem that the symmetric precision of measuring the track gauges on the two sides of the symmetric part is not accurate enough in the prior art is solved.
Drawings
Fig. 1-2 are schematic diagrams of the overall structure of the measuring device;
FIG. 3 is a measurement schematic of a measurement device;
FIG. 4 is an enlarged view of the structure at A in FIG. 1;
FIG. 5 is an enlarged view of the structure at B in FIG. 2;
FIG. 6 is an enlarged view of the structure at C in FIG. 1;
in the above figures: 1. a measuring frame; 11, mounting a plate; 12. a mounting seat; 121. a first layer seat; 122. a second layer seat; 123. a third layer seat;
2. a cross beam 21, a slide rail; 22. a first slider;
31. a first laser displacement sensor; 32. a second laser displacement sensor; 33. a first read head; 34. a second read head; 35. magnetic grid bars;
4. a test controller; 5. a moving member; 6. a transmission member; 61. a lead screw; 62. a lead screw nut;
7. a guide bar; 8. a locking mechanism; 81. locking the handle; 82. locking the clamp spring; 9. a manual adjustment device; 10. and limiting and stopping.
Detailed Description
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
The application provides a measuring device, please refer to fig. 1 and 2, which includes a measuring frame 1 and a beam 2 symmetrically disposed on the measuring frame 1, wherein a detecting device is disposed on the beam 2, the detecting device includes a first laser displacement sensor 31 and a second laser displacement sensor 32 symmetrically disposed about a central point of the beam 2, and the laser displacement sensors can slide back and forth along an extending direction of the beam 2; the device further comprises a measuring scale comprising a first readhead 33 and a second readhead 34, which are symmetrically arranged. The measurement end point of the first reading head 33 is the measurement starting point of the first laser displacement sensor 31, and the first reading head 33 and the first laser displacement sensor 31 slide synchronously; the measurement end point of the second reading head 34 is the measurement starting point of the second laser displacement sensor 32, and the second reading head 34 slides synchronously with the second laser displacement sensor 32. The detection device further comprises a test controller 4, and it is electrically connected to the detection device.
As shown in fig. 1, the measuring rack 1 includes a mounting plate 11 and a mounting seat 12, specifically, in this embodiment, the mounting plate 11 is a rectangular parallelepiped plate-shaped structure and is mounted in a vertical direction. The mounting seat 12 comprises a first layer seat 121, a second layer seat 122 and a third layer seat 123, and the structural size of the first layer seat 121 is larger than that of the second layer seat 122, so that the measuring rack 1 is more stable; the second layer seat 122 is disposed on the first layer seat 121, the mounting plate 11 is also disposed on the first layer seat 121, and the third layer seat 123 is mounted on the upper end portion of the mounting plate 11. In the embodiment, the second layer seat 122 and the third layer seat 123 are provided with a plurality of through holes relatively, the second layer seat 122 and the third layer seat 123 are provided with three through holes, the through holes on each layer seat are sequentially arranged along the same straight line, and the bottom surface of the first layer seat 121 is also provided with two pins, the pins and a bearing plate at the center of the ground track-changing facility are provided with pin holes, so that the pins on the mounting seat are inserted into the pin holes, and the accuracy of the measuring reference is ensured; and each sleeper beam of the ground track transfer facility is provided with a central bearing plate matched with the measuring equipment, so that the full-length size detection and symmetry detection of symmetrical parts such as a transverse centering guide rail, an unlocking guide rail and a wheel guide rail of the ground track transfer facility can be completed one by one, and the ground track transfer facility is convenient, rapid, accurate and reliable.
The measuring frame 1 is provided with a transmission member 6, the transmission member 6 comprises a lead screw 61 and a lead screw nut 62, and the precise lead screw 61 is adopted in the embodiment. Specifically, one end of the screw 61 is rotatably disposed in the through hole of the second layer seat 122, the other end of the screw 61 passes through the through hole of the third layer seat 123, and the two through holes are oppositely disposed, so that the screw 61 is vertically disposed on the measuring rack 1, and bearings are further mounted at two ends of the screw 61. The screw 61 is screwed to the screw nut 62, and as is clear from the operating principle of the screw nut pair, the rotational motion of the screw 61 can be converted into the linear motion of the screw nut 62, and thus by adopting this configuration, the screw nut 62 can be linearly moved along the extending direction of the screw 61 by rotating the screw 61.
As shown in fig. 1 and 6, the measuring stand 1 is provided with a moving member 5, and specifically, the moving member 5 is disposed on a mounting plate 11, and the center of the beam 2 is fixedly mounted on the moving member 5, so that the mounting plate 11 and the beam 2 are connected together by the moving member 5 and form a cross structure. The moving member 5 is located between the second layer seat 122 and the third layer seat 123, and the moving member 5 is provided with three through holes, the through holes are correspondingly arranged with the through holes on the second layer seat 122 or the third layer seat 123, the lead screw 61 sequentially passes through the through holes correspondingly arranged on the second layer seat 122, the moving member 5 and the third layer seat 123 from bottom to top, and the lead screw nut 62 is fixed on the moving member 5, and meanwhile, the mounting plate 11 is connected with the moving member 2 through the lead screw nut 5. Therefore, under the action of the screw 61, the nut 62 of the screw 61 drives the moving member 5 and the cross beam 2 to make linear motion along the extending direction of the screw 61, and finally the height of the cross beam 2 is adjusted to adapt to the size inspection of different parts of the ground facility.
As shown in fig. 4, in order to facilitate adjustment of the height of the cross beam 2, a manual adjusting device 9 is disposed on the screw 61, and a structure and an installation position of the manual adjusting device 9 may be changed according to actual needs. The hand wheel comprises a rotating disc, a connecting end is arranged on the bottom end face of the rotating disc, and the structure of the connecting end is matched with that of the lead screw 61, so that the lead screw 61 and the hand wheel are connected together; the upper end face of the hand wheel is provided with a rotating handle, so that the hand wheel can be conveniently rotated. By arranging the hand wheel structure, when the height of the cross beam 2 needs to be adjusted, the rotation of the screw rod 61 can be controlled by rotating the hand wheel, so that the cross beam 2 can be adjusted to a proper and accurate height more conveniently.
In order to make the lead screw 61 transmit more stably, in this embodiment, the guide rods 7 are respectively disposed on two sides of the lead screw 61, and the guide rods 7 sequentially pass through the through holes corresponding to the second-layer seat 122, the moving member 5, and the third-layer seat 123 from bottom to top, that is, the two guide rods 7 are distributed on two sides of the lead screw 61 and parallel to the lead screw 61. Therefore, under the action of the guide columns on the two sides, the function of limiting the rotation freedom degree of the screw nut 62 is achieved, so that the rotation motion of the screw 61 can be completely converted into the linear motion of the screw nut 62 along the axial direction of the screw 61, the cross beam 2 can move along the axial line of the screw 61 more stably, and meanwhile, the efficiency of adjusting the height of the cross beam 2 is improved.
Further, in order to make the cross beam 2 stably located at a required position, as shown in fig. 4, the measuring stand 1 is provided with a locking structure, specifically, the locking structure includes a locking handle 81 and a locking snap spring 82, the locking handle 81 is connected with the locking snap spring 82, that is, the locking handle 81 is arranged on one side surface of the locking snap spring 82; the locking clamp spring 82 is disposed on the third layer seat 123 and sleeved outside the lead screw 61. After the hand wheel is rotated to adjust the cross beam 2 to a required position, the locking handle 81 is operated to enable the locking spring to clamp and lock the screw rod 61. Therefore, the situation that the position of the cross beam 2 is changed due to the rotation of the screw rod 61 under the action of external force, and the measuring accuracy and the measuring efficiency are influenced can be prevented.
As shown in fig. 1 and 5, the cross beam 2 is provided with a sliding device, a detection device, and a limit stopper.
The sliding device comprises a sliding rail 21 and a sliding block, wherein the sliding rail 21 is a linear sliding rail and extends from one end of the cross beam 2 to the other end, and the sliding block is slidably mounted on the sliding rail 21. Specifically, the first slider 22 and the second slider that the slider includes, two slider structures are the same and the symmetry sets up in the both ends of crossbeam 2 center department. The one end of slider is groove structure, and the structure of recess cooperatees with slide rail 21's structure for the recess end joint is on slide rail 21, and can carry out the slip that makes a round trip along slide rail 21's extending direction, and all is provided with the locking screw more than two on every slider, can fix the position of slider on crossbeam 2 from this.
The detection device comprises a first laser displacement sensor 31 and a second laser displacement sensor 32, the two laser displacement sensors are respectively located on the symmetrically arranged sliding blocks, and in the embodiment, the high-precision laser displacement sensors are adopted, so that the measurement precision is high, and the use requirement is met. Specifically, the first laser displacement sensor 31 is fixed on the first slider 22, and the second laser displacement sensor 32 is fixed on the second slider, so that the laser displacement sensors can slide along with the sliding of the corresponding sliders, and when measuring, the position of the laser displacement sensor can be fixed through the locking screw on the slider, and the accuracy of the measured data is improved. The laser displacement sensor is based on a laser triangulation principle, and measures in a physical optical mode, and laser is located inside the sensor and can automatically calibrate linearity, namely data measured by the laser displacement sensor is physical displacement. The first laser displacement sensor 31 and the second laser displacement sensor 32 measure simultaneously, and the distance Lc from the position of the first laser displacement sensor 31 to the right side of the measured part is measured1The distance Lc from the position of the second laser displacement sensor 32 to the left of the measured component2。
The detection device further comprises a measuring scale, wherein the measuring scale can be a grating scale or a magnetic grating scale, in the embodiment, the magnetic grating scale is selected, the magnetic grating scale comprises a magnetic grating bar 35 and a reading head, the magnetic grating bar 35 is positioned on the side surface of the beam 2, and the reading head comprises a first reading head 33 and a second reading head 34; the first reading head 33 is installed on the first slide block 22 and is arranged corresponding to the magnetic grid bar 35, and the second reading head 34 is installed on the second slide block and is arranged corresponding to the magnetic grid bar 35. The reading head is used for collecting and converting signals of the magnetic grid bars 35 and measuring the distance from the position of the laser displacement sensor to the center of the cross beam 2, and the measuring device is arranged on a bearing plate at the center of the ground track transfer facility for measurement, so that the actual measurement of the measuring scale is the distance from the laser displacement sensor to the center of the ground track transfer facility, and the measurement of the laser displacement sensor is the distance from the laser displacement sensor to a measured part.
Specifically, as shown in fig. 3, the distance measured by the first reading head 33 is the distance Dc from the position of the first laser displacement sensor 31 to the center of the ground track-changing facility1The distance measured by the second reading head 34 is the distance Dc from the position of the second laser displacement sensor 32 to the center of the ground track-changing facility2. Therefore, under the matching action of the laser displacement sensor and the measuring scale, the distance Lc between the right side of the component M and the center of the ground track transfer facility can be measured simultaneously1+Dc1The distance Lc from the left side of the member M to the center of the ground track transfer facility2+Dc2Therefore, the symmetry degree of the measured part can be accurately measured, the measurement precision is high, and the problem that the symmetry precision for measuring the track gauges on the two sides of the symmetrical part in the prior art is not accurate enough is solved.
Meanwhile, the two ends of the beam 2 are both provided with limit stops for preventing the sliding block from slipping on the sliding rail 21.
The measuring frame 1 is also provided with a measuring controller 4, the measuring controller 4 is integrated on the device, can be charged, is provided with two rows of digital display meters, and can simultaneously display the distance between the left structure and the right structure and the center line of the ground track-changing facility so as to evaluate the symmetry. Specifically, the measurement controller 4 is electrically connected with the detection device, the reading head and the magnetic grid bar 35 sense the position information of the two linear sliding blocks on the cross beam 2 and transmit the position information to the test controller 4, the numerical value and the numerical value actually measured by the laser displacement sensor are compensated by an internal program of the measurement controller, and finally, the value displayed on the digital display meter is the actual distance value from the center of the ground track-changing facility to the left side or the right side of the measured component. The test controller 4 processes the obtained data through an internal program, is insensitive to the adjustment error of the transverse sliding block, is convenient to adjust, ensures the precision, and solves the problem that the symmetric precision of the track gauges on two sides of the symmetric component is not accurate enough in the prior art.
According to a second aspect of the present application, there is provided a measuring method, which is applied to the above-mentioned measuring apparatus, and includes:
the measuring equipment mainly aims at measuring the transverse dimension, before the measuring equipment is used, firstly, the positions of the sliding blocks on two sides on the cross beam 2 are adjusted according to the nominal dimension of a measured component and in combination with the measuring range of a laser displacement sensor until the effective measuring range covers the nominal dimension of the measured component, and then the sliding blocks are locked and fixed on the cross beam 2 by using locking screws.
Then the device is placed on a central mounting plate 11 of a ground rail changing facility where a measured component is located, a pin hole is formed in the central mounting plate 11, and a pin on measuring equipment is inserted into the pin hole of the central mounting plate 11, so that the center of the measuring equipment is ensured to be the center of the ground rail changing facility, namely the center of the cross beam 2 is the center of the ground rail changing facility. After centering, according to the reference elevation of the tested part, the height of the moving part 5 is adjusted by rotating the hand wheel, so that the cross beam 2 and the corresponding detection device are driven to be vertically adjusted to the effective test position of the part, and then the locking handle 81 is rotated, so that the screw rod 61 is locked by the locking clamp spring 82. At the moment, the preparation work is finished, the laser displacement sensor is turned on, and the distances from the left side and the right side of the symmetrical part to the center line of the ground track-changing facility can be quickly obtained, so that whether the precision and the symmetry meet the passing requirement of the train can be quickly and accurately judged.
For a more clear explanation of the present application, the working principle and method of the present application will be further explained by taking the embodiments shown in fig. 1 to 6 as examples:
through the measuring method, the measuring equipment is arranged in an effective measuring range and is fixed on the central mounting plate 11 of the ground track transfer facility, the detection device is adjusted to a reasonable testing height, and the screw 61 is locked by the locking structure. After the above preparation work is completed, the detection device is turned on to start measurement.
Specifically, the central point of the beam 2 is used as a reference, the magnetic grid bar 35 is used for measuring the position from the current position of the laser displacement sensor to the central point of the beam 2, the reading head is used for collecting and converting signals of the magnetic grid bar 35 and sending the signals to the test controller 4, and the laser displacement sensor is used for measuring the distance from the current position of the laser displacement sensor to the measured part M. As shown in fig. 3, L is the maximum measurement range of the laser displacement sensor, D is the maximum measurement range of the magnetic grid 35, and the maximum measurement range on each side of the base point is L + D with the center point of the beam 2 as the base point. The output signal of the magnetic grid bar 35 is an AB phase difference signal, and a specific position value is calculated through the pulse number of AB two phases. 1 pulse of magnetic grid strip 35 corresponds actual distance 5um, and the program in test controller 4 will read the pulse number conversion that reads and actual displacement value, and the unit is mm, and resolution ratio is 5 um. The laser displacement sensor is based on the laser triangulation principle and measures in a physical optical mode. The linearity calibration is carried out in the laser displacement sensor, namely the measured data is the actual physical displacement. The laser displacement sensor outputs a data signal with the unit of 0.01 mm.
The laser displacement sensor and the reading head are fixed on the linear sliding block together, and when the linear sliding block moves on the cross beam 2, the data of the laser displacement sensor and the data of the magnetic grid strips 35 can be changed in a linkage mode. Through the induction of the reading head and the magnetic grid strip 35, the position information of the two linear sliding blocks on the cross beam 2 is transmitted to the test controller 4, the internal program of the test controller 4 can compensate the numerical value and the numerical value actually measured by the laser displacement sensor, and finally the values displayed on the digital display of the test controller 4 are respectively the unilateral actual measurement distance from the left side or the right side of the component M to the center line of the ground track-changing facility, namely Lc + Dc, Lc is the distance measured by the laser displacement sensor, and Dc is the distance measured by the magnetic grid strip 35.
Based on the above, the invention has at least the following technical effects and advantages:
1. the first laser sensor and the second laser sensor which are symmetrically arranged are arranged on a cross beam of the measuring device, the measuring scale is also arranged at the same time, the measuring end point of a first reading head of the measuring scale is the measuring starting point of the first laser displacement sensor, the measuring end point of a second reading head is the measuring starting point of the second laser displacement sensor, namely, the laser sensors which are symmetrically arranged are matched with the measuring scale for measurement, a test controller processes the obtained data through an internal program, and the two sides of the measuring device are simultaneously matched for measurement, so that the measurement of the rail distance symmetry precision of the component is improved under the action of the measuring device, and the problem that the rail distance symmetry precision from the two sides of the measuring component to the central line of the ground track-changing facility in the prior art is not accurate enough is solved,
2. this measuring equipment adopts the flexibility design in this application, and is compatible good. On one hand, the device can be vertically adjusted by arranging the combination of the moving member and the screw nut pair, so that the device can be compatible with the transverse sizes of symmetrical structures with different heights of the ground track transfer facility; on the other hand, the measuring device is provided with a slide block, and components with different models and sizes can be measured through the combination of the two laser displacement sensors and the measuring scale and the slide block, and the measuring device is particularly suitable for measuring components with large sizes.
3. Be provided with test controller in this application, test controller is integrated on the device, and is chargeable, has two lines digital display tables, can show the distance of the left and right sides apart from ground facility central line simultaneously to the aassessment symmetry. The test controller processes the obtained data through an internal program, is insensitive to the adjustment error of the transverse sliding block, is convenient to adjust, ensures the precision, and solves the problem that the symmetric precision of the track gauges on two sides of the symmetric component is not accurate enough in the prior art.
4. The utility model provides a be provided with manual adjusting device on the lead screw, through setting up above-mentioned hand wheel structure, when the high needs adjustment of crossbeam, can control the rotation of lead screw through rotating the hand wheel, be convenient for more from this adjust the crossbeam suitable and accurate high department. And meanwhile, a locking piece is also arranged, and the lead screw is clamped and locked by the locking piece. Therefore, the situation that the position of the cross beam is changed due to the rotation of the screw rod under the action of external force, and the measuring accuracy and the measuring efficiency are influenced can be prevented.
5. The measuring equipment in the application has the advantages of compact structure, convenience in carrying, high integration level and easiness in operation; and the measuring equipment adopts a standardized design, and is convenient to popularize as a conventional detection tool.
The present application is specifically described above by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present application, it should be noted that the terms "left", "right", "upper", "lower", "front", "rear", "first", "second", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or through an intermediary profile. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Claims (11)
1. A measuring device is characterized by comprising a measuring frame and cross beams symmetrically arranged on the measuring frame,
be provided with detection device on the crossbeam, detection device includes:
a first laser displacement sensor;
the first laser displacement sensor and the second laser displacement sensor are symmetrically arranged around the center point of the beam; the first laser displacement sensor and the second laser displacement sensor can slide back and forth along the extending direction of the cross beam;
the measuring scale comprises a first reading head and a second reading head which are symmetrically arranged about the central point of the beam;
the measurement end point of the first reading head is the measurement starting point of the first laser displacement sensor, and the first reading head and the first laser displacement sensor synchronously slide;
the measurement end point of the second reading head is the measurement starting point of the second laser displacement sensor, and the second reading head and the second laser displacement sensor slide synchronously;
and the test controller is electrically connected with the detection device.
2. The measuring device according to claim 1, wherein a slide rail is arranged on the cross beam, the slide rail extends from one end of the cross beam to the other end of the cross beam, and a first slide block and a second slide block are symmetrically arranged on the slide rail;
the first sliding block can slide along the extending direction of the sliding rail, and the first laser displacement sensor and the first reading head are both arranged on the first sliding block;
the second slider can slide along the extending direction of the slide rail, and the second laser displacement sensor and the second reading head are both installed on the second slider.
3. The measuring apparatus according to claim 1 or 2, wherein the measuring scale comprises magnetic bars provided on side end faces of the cross member, and the magnetic bars extend from one end of the cross member to the other end; the first reading head and the second reading head are both arranged corresponding to the magnetic grid strips so as to realize the acquisition and conversion of the magnetic grid strip signals.
4. The measuring device according to claim 3, characterized in that both ends of the cross beam are provided with limit stops.
5. The measuring apparatus according to claim 1, wherein the measuring rack includes a mounting plate on which a moving member is mounted, the moving member being slidable in a lengthwise direction of the mounting plate, and the mounting plate and the cross member are connected together by the moving member and constitute a cross structure.
6. The measuring device according to claim 5, wherein the measuring rack comprises a mounting base and a transmission member, the mounting base is fixed on the mounting base, one end of the transmission member is rotatably arranged on the mounting base, and the other end of the transmission member extends along the length direction of the mounting base.
7. The measuring device according to claim 6, wherein the transmission member comprises a lead screw and a lead screw nut which are connected through threads, one end of the lead screw is rotatably arranged on the mounting seat, and the other end of the lead screw extends along the length direction of the mounting plate; the lead screw nut is fixed on the moving piece.
8. The measuring device according to claim 7, wherein guide rods are respectively arranged on two sides of the screw rod, the guide rods are fixed on the measuring frame, three through holes are arranged on the moving member, and the moving member is slidably arranged outside the screw rod and the guide rods through the through holes.
9. The measuring device according to claim 7 or 8, wherein a locking mechanism is mounted on the measuring frame, and the locking mechanism is sleeved outside the lead screw.
10. A measuring device according to claim 7 or 8, wherein a manual adjustment means is mounted on the lead screw.
11. A measuring method applied to the measuring apparatus according to any one of claims 1 to 10, characterized in that the measuring method comprises: the measuring equipment is adjusted and fixed at the center line of the ground track transfer facility, and the measuring equipment is opened for measurement;
the first laser displacement sensor measures the actual distance Lc from the position of the first laser displacement sensor to the right side of the measured component1(ii) a The actual distance Lc from the position of the second laser displacement sensor to the left side of the measured component is measured by the second laser displacement sensor2；
The first reading headCollecting data and measuring the actual distance Dc from the position of the first laser displacement sensor to the center of the cross beam1；
The second reading head acquires data and measures the actual distance Dc from the position of the second laser displacement sensor to the center of the cross beam2；
The detection means will detect the actual distance Lc1、Lc2、Dc1、Dc2The data are transmitted to the test controller, the test controller processes the data through an internal program, and finally the actual distance value Lc between the right side and the left side of the measuring component and the center line of the ground track-changing facility is obtained1+Dc1、Lc2+Dc2。
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| CN111659486B (en) * | 2020-06-11 | 2022-01-07 | 武汉轻工大学 | Rice huller rubber roll diameter measuring device |
| CN111521153B (en) * | 2020-07-02 | 2022-09-13 | 上海雄程海洋工程股份有限公司 | Method for measuring pile parameters in pile sinking process |
| CN114252042B (en) * | 2020-09-25 | 2023-12-22 | 上海微电子装备（集团）股份有限公司 | Mask table vertical measurement tool and mask table vertical measurement method |
| CN112649770A (en) * | 2020-12-22 | 2021-04-13 | 深圳市优必选科技股份有限公司 | Magnetic force testing device |
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