CN113670163A - Calibrating device for contact rail measuring scale - Google Patents
Calibrating device for contact rail measuring scale Download PDFInfo
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- CN113670163A CN113670163A CN202111047110.XA CN202111047110A CN113670163A CN 113670163 A CN113670163 A CN 113670163A CN 202111047110 A CN202111047110 A CN 202111047110A CN 113670163 A CN113670163 A CN 113670163A
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- measuring
- calibration
- contact rail
- rail
- value
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to the technical field of detection and calibration of a contact rail measuring scale, in particular to a calibration device of the contact rail measuring scale, which comprises a marble base, a pull-out value, a height-guiding value measuring device, a contact rail measuring scale and a self-calibration component, wherein the marble base is provided with the pull-out value, the height-guiding value measuring device, the self-calibration component and a simulated steel rail, the contact rail measuring scale is transversely arranged on the simulated steel rail and is fixed by a pressing mechanism on the simulated steel rail, one end of the contact rail measuring scale extends to the pull-out value and the height-guiding value measuring device, the calibration device completely simulates the actual use working condition based on the working principle of comparison and measurement of the contact rail measuring scale, and can calibrate the error of the pull-out value and the height-guiding value of the contact rail measuring scale fixedly fixed on the standard steel rail through the accurate self-calibration component ' 0 ' reference distance and the ' 0 ' position ' of the pull-out value and the height-guiding value of the measuring device, various human interference factors are overcome, the working efficiency is greatly improved, and the accuracy and reliability of the calibration result are ensured.
Description
Technical Field
The invention relates to the field of detection and calibration of a contact rail measuring scale, in particular to a calibration device of the contact rail measuring scale.
Background
Urban rail transit becomes the first choice for the development of large-city public transport due to the safety and convenience of the urban rail transit. Different from high-speed rails and motor cars, the urban rail operation is generally performed by system power supply through a contact rail power supply network under the restriction of conditions such as underground tunnel clearance.
The contact rail measuring scale is a special measuring instrument for urban rail transit and is used for measuring data of a contact rail (power supply rail) in horizontal and vertical directions relative to a traveling rail, whether the measured value is accurate or not affects the power supply and operation safety of the rail transit, a simple pull-out device is adopted in the conventional contact rail measuring scale calibration scheme to position the '0' reference distance of the contact rail measuring scale, a positioning block is adopted to determine the '0' position of a pull-out value and a height-leading value measuring device, a digital display height gauge is used for calibrating the indicating value errors of the pull-out value and the height-leading value of the measuring scale, the '0' position needs to be determined again in each measurement, and the '0' reference distance is inaccurate. The standard steel rail is not in a conventional geometric shape, the contact position of the standard steel rail and the positioning cylinder of the contact rail measuring scale is in an arc shape, a simulation steel rail is not adopted in the prior art, the reference distance of '0' is pulled out only through a simple device, the accuracy of the reference of '0' cannot be guaranteed, the change of the reference distance of '0' of the ruler after the contact position of the positioning cylinder of the contact rail measuring scale and the standard steel rail is abraded cannot be found, and meanwhile, the reference distance of '0' of the standard steel rail is not traced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a calibrating device for a contact rail measuring scale.
In order to achieve the purpose, the invention adopts the following technical scheme:
a calibration device for a contact rail measuring scale comprises a reference platform, a measuring device for a pull-out value and a lead-out height value, a contact rail measuring scale, a self-calibration assembly, a simulated steel rail and a fixing mechanism, wherein the reference platform is provided with the measuring device for the pull-out value and the lead-out height value, the simulated steel rail and the fixing mechanism; a self-calibration assembly is placed; the measuring scale of the contact rail to be calibrated is transversely arranged on the simulated steel rail and is fixed by a pressing mechanism, and the measuring end of the measuring scale extends to a measuring device for a pull-out value and a lead height value;
the pull-out value and lead height value measuring device comprises a guide rail base, wherein transverse linear guide rails are arranged on two sides of the guide rail base, a sliding frame is arranged on each transverse linear guide rail in a sliding mode, a ball screw is rotatably arranged on each sliding frame, a transverse hand wheel is arranged at one end of each ball screw, an upright post is vertically arranged at the top end of each sliding frame, vertical linear guide rails are arranged on the upright posts on the two sides of each sliding frame, a sliding block is arranged between the vertical linear guide rails, each ball screw is rotatably arranged in each sliding block, a vertical hand wheel is arranged at the top end of each ball screw, and a calibration measuring head is arranged on the back side of each sliding block;
the self calibration subassembly is provided with the bottom supporter including the calibration block body, the bottom of calibration block body, and the one end of calibrating the block body is provided with the zero setting ware, and the other end of calibrating the block body is provided with the location cylinder.
Preferably, the pressing mechanism comprises an upper pressing fixture and a side pressing fixture, and the upper pressing fixture and the side pressing fixture are fixedly clamped on the contact rail measuring ruler.
Preferably, the sliding frame is horizontally provided with a transverse digital display scale, and the sliding block is vertically provided with a vertical digital display scale.
Preferably, the calibration measuring head is provided with two measuring surfaces of a horizontal defense line and a vertical defense line, and the intersection line of the two measuring surfaces is chamfered, so that the calibration measuring head can be matched with a zero setter on the calibration block body for use during self calibration. Preferably, after the calibrated contact rail measuring scale is placed on the simulated steel rail and is compressed through the fixing mechanism, the transverse hand wheel on the measuring device for the pull-out value and the lead-out value can be respectively adjusted, the vertical hand wheel enables the horizontal measuring surface of the calibrating measuring head to be in close contact with the lead-out value measuring surface of the contact rail measuring scale, and the vertical measuring surface is in close contact with the pull-out value measuring surface of the contact rail measuring scale. Preferably, the self-calibration assembly is supported on the reference platform by means of a bottom support.
The invention has the beneficial effects that:
the invention completely simulates the actual working condition based on the working principle of the comparative measurement of the contact rail measuring scale, can accurately self-correct the '0' reference distance value and the '0' position value of the pull-out value and the lead height value of the measuring device through the self-calibration component, and then carries out the error calibration of the '0' reference distance, the pull-out value and the lead height value of the contact rail measuring scale fixed on the standard steel rail, thereby overcoming various artificial interference factors, greatly improving the working efficiency and ensuring the accurate and reliable calibration result.
Drawings
Fig. 1 is a schematic structural diagram of a calibration device for a contact rail measuring scale according to the present invention;
fig. 2 is a schematic structural diagram of a front end face of a device for measuring a pull-out value and a lead height value of a calibration device for a measuring ruler of a contact rail according to the present invention;
fig. 3 is a schematic structural diagram of a rear end face of a device for measuring a pull-out value and a lead height value of a calibration device for a measuring ruler of a contact rail according to the present invention;
fig. 4 is a schematic structural diagram of a self-calibration assembly of a calibration apparatus for a contact rail measurement ruler according to the present invention.
In the figure: the device comprises a reference platform 1, a pull-out value 2, a height guide value measuring device 3, a contact rail measuring scale 3, a self-calibration assembly 4, a simulated steel rail 5, a pressing mechanism 6, a guide rail base 21, a transverse linear guide 22, a vertical linear guide 23, a transverse digital display scale 24, a vertical digital display scale 25, a transverse hand wheel 26, a vertical hand wheel 27, a calibration block 41, a bottom support 42, a zero position setter 43 and a positioning cylinder 44.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a calibration device for a contact rail measuring scale comprises a reference platform 1, a pull-out value and lead-height value measuring device 2, a contact rail measuring scale 3, a self-calibration assembly 4, a simulated steel rail 5 and a fixing mechanism 6, wherein the pull-out value and lead-height value measuring device 2, the simulated steel rail 5 and the fixing mechanism 6 are installed on the reference platform 1; the self-calibration assembly 4 and the contact rail measuring scale 3 are arranged, wherein the contact rail measuring scale 3 is transversely arranged on the simulated steel rail, passes through the simulated steel rail 5 and is pressed by the fixing mechanism 6, the fixing mechanism 6 comprises an upper pressing clamp and a side pressing clamp, the upper pressing clamp and the side pressing clamp are both used for clamping and fixing the contact rail measuring scale 3, and the measuring end of the contact rail measuring scale 3 extends to the pull-out value and lead-height value measuring device 2;
the measuring device 2 for the pull-out value and the lead height value comprises a guide rail base 21, transverse linear guide rails 22 are arranged on two sides of the guide rail base 21, a sliding frame is arranged on each transverse linear guide rail 22 in a sliding mode, a ball screw is arranged on each sliding frame in a rotating mode, a transverse hand wheel 26 is arranged at one end of each ball screw, a vertical column is vertically arranged at the top end of each sliding frame, vertical linear guide rails 23 are arranged on the vertical columns on the two sides, a sliding block is arranged between the vertical linear guide rails 23, the ball screws are rotatably arranged on the sliding block, a vertical hand wheel 27 is arranged at the top ends of the ball screws, a transverse scale 24 is horizontally arranged on each sliding frame, a vertical digital display scale 25 is vertically arranged on each sliding block, a calibration measuring head 28 is arranged on the back side of each sliding block, when a contact rail measuring scale 3 to be calibrated is horizontally arranged on a simulation steel rail 5 and tightly pressed through a fixing mechanism 6, the pull-out value and lead height value measuring device 2 is adjusted to enable the horizontal measuring surface of the calibration measuring head 28 to be in close contact with the contact value measuring surface of the contact rail measuring scale 3, the vertical measuring surface of the calibration measuring head 28 is in close contact with the pull-out value measuring surface of the contact rail measuring scale 3, and the vertical digital display scale 25 reads the pull-out value, the reference distance error of the height-leading value '0' and the indicating value error through the horizontal digital display scale 24. The self-calibration assembly 4 comprises a calibration block body 41, a bottom support body 42 is arranged at the bottom end of the calibration block body 41, a zero setter 43 is arranged at one end of the calibration block body 41, a positioning cylinder 44 is arranged at the other end of the calibration block body 41, and the bottom support body 42 is supported on the reference platform 1.
In the embodiment, the reference platform 1 plays a supporting role and a balancing role, the pull-out value and lead-height value calibrating device 2 is a core component of the whole device, and the calibration of items such as '0' reference distance value, pull-out value and lead-height value indicating error of the whole measuring scale is completed through the zero setting device 43, the digital display scale and a corresponding transmission structure of the ball screw; the calibration block 41 realizes calibration of the checking fixture through precision machining;
the self-calibration assembly 4 is used to accurately calibrate the "0" reference distance value of the device prior to the first calibration of the touch rail measurement scale 3. The self-calibration assembly 4 is placed on the simulated steel rail 5, the positioning cylinder 44 is in close contact with the simulated steel rail 5 through the fixing mechanism 6, the transverse linear guide rail 22 is matched with the transverse hand wheel 26 and the ball screw to realize transverse movement of the measuring device, the vertical linear guide rail 23 is matched with the vertical hand wheel 27 and the ball screw to realize vertical movement of the measuring device, and the calibration measuring head 28 and the zero position setter 43 on the calibration block body 41 sequentially confirm the accurate value of the '0' reference distance in the horizontal direction and the vertical direction in a soft contact (compressing the zero position setter to the zero position) mode. The accurate geometric dimension value of the calibration block 41 is obtained through the detection and calibration of precision measuring instruments such as a coordinate measuring machine, the self-calibration component 4 can be placed on one side of the reference platform 1 when not used, the normal use of the device is not affected, the device can be calibrated and checked timely by utilizing the self-calibration component 4, and the problem of tracing to the source of the device is solved.
When carrying out 3 calibrations of conductor rail dipperstick, wherein conductor rail dipperstick 3 is for treating the dipperstick of calibration to calibrating device's part, transversely arrange conductor rail dipperstick 3 on simulation rail 5, make conductor rail dipperstick 3's location cylinder and simulation rail contact closely and compress tightly through fixed establishment 6, adjust the conductor rail dipperstick and pull out the value scale and lead high value scale to "0" reference distance department.
The transverse linear guide rail 22 is matched with a transverse hand wheel 26 and a ball screw to realize the transverse movement of the measuring device, the vertical linear guide rail 23 is matched with a vertical hand wheel 27 and the ball screw to realize the vertical movement of the measuring device, so that the horizontal measuring surface of the calibration measuring head is in close contact with the height guide value measuring surface of the contact rail measuring scale 3, the vertical measuring surface of the calibration measuring head 28 is in close contact with the pull-out value measuring surface of the contact rail measuring scale 3, and the reference distance error of the pull-out value of the measuring scale, namely '0', is read out through the transverse digital display scale 24; and the reference distance error of the lead height value '0' is read out through the vertical digital display scale 25; and then, continuously adjusting the pull-out value of the contact rail measuring scale and the height guide value scale to the calibrated position, and reading the indicating value error of the scale in the same operation. And self calibration subassembly 4 can be placed on one side when not using, does not influence the device normal use, through self calibration subassembly 4, can be timely to examine utensil carry out calibration, sum bad, solved the problem of tracing to the source of device.
According to the invention, by simulating the working state of the contact rail measuring scale, the accurate '0' reference distance is set up by using the pull-out value and lead-high value measuring device 2, the self-calibration component 4 and the simulated steel rail 5, so that the system error is effectively reduced, the device can be calibrated and checked in time through the self-calibration component, the problem of tracing the source of the device is solved, batch calibration can be carried out after the '0' reference distance is calibrated once, and the calibration efficiency is greatly improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A calibration device for a contact rail measuring scale comprises a reference platform (1), a pull-out value and lead-height value measuring device (2), a contact rail measuring scale (3), a self-calibration component (4), a simulation steel rail (5) and a fixing mechanism (6), and is characterized in that the pull-out value and lead-height value measuring device (2), the simulation steel rail (5) and the fixing mechanism (6) are installed on the reference platform (1); lay contact rail dipperstick (3), self calibration subassembly (4), wherein contact rail dipperstick (3) are for waiting to calibrate the dipperstick, and non-calibrating device's part, its blade transversely are arranged on simulation rail (5), compress tightly through fixed establishment (6), and the measuring end extends to the value of pulling out, leads high value measuring device (2) department.
The pull-out value and lead height value measuring device (2) comprises a guide rail base (21), transverse linear guide rails (22) are arranged on two sides of the guide rail base (21), a sliding frame is arranged on each transverse linear guide rail (22) in a sliding mode, a ball screw is arranged on each sliding frame in a rotating mode, a transverse hand wheel (26) is arranged at one end of each ball screw, an upright post is vertically arranged at the top end of each sliding frame, vertical linear guide rails (23) are arranged on the upright posts on the two sides, a sliding block is arranged between the vertical linear guide rails (23), the ball screws are rotatably arranged in the sliding blocks, vertical hand wheels (27) are arranged at the top ends of the ball screws, and calibration measuring heads (28) are arranged on the back sides of the sliding blocks;
the self-calibration assembly (4) comprises a calibration block body (41), a bottom supporting body (42) is arranged at the bottom end of the calibration block body (41), a zero setter (43) is arranged at one end of the calibration block body (41), and a positioning cylindrical block (44) is arranged at the other end of the calibration block body (41).
2. The device for calibrating the contact rail measuring scale according to claim 1, wherein the pressing mechanism (5) comprises an upper pressing fixture and a side pressing fixture, and the upper pressing fixture and the side pressing fixture are used for clamping and fixing the contact rail measuring scale (3).
3. The calibrating device for the contact rail measuring ruler according to the claim 1, wherein the sliding frame is horizontally provided with a horizontal digital display scale (24), and the sliding block is vertically provided with a vertical digital display scale (25).
4. The device for calibrating a contact rail measuring ruler according to claim 1, wherein the calibrating probe (28) has two measuring surfaces, horizontal and vertical, and the intersection line of the two measuring surfaces is chamfered, so that the device can be used with a zero setter (43) on the calibrating block (41) during self-calibration.
5. The calibration device for the contact rail measuring scale according to claim 1, wherein after the contact rail measuring scale (3) is placed on the simulated steel rail (5) and is compressed by the fixing mechanism (6), the horizontal hand wheel (26) on the measuring device for the pull-out value and the lead-out value is respectively adjusted, the horizontal measuring surface of the calibration measuring head (28) is closely contacted with the lead-out value measuring surface of the contact rail measuring scale (3) by the vertical hand wheel (27), and the vertical measuring surface is closely contacted with the pull-out value measuring surface of the contact rail measuring scale (3).
6. The device for calibrating the contact rail measuring ruler according to the claim 1, characterized in that the self-calibration assembly (4) is supported on the reference platform (1) by means of a bottom support (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047110.XA CN113670163A (en) | 2021-09-07 | 2021-09-07 | Calibrating device for contact rail measuring scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111047110.XA CN113670163A (en) | 2021-09-07 | 2021-09-07 | Calibrating device for contact rail measuring scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113670163A true CN113670163A (en) | 2021-11-19 |
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ID=78548993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111047110.XA Pending CN113670163A (en) | 2021-09-07 | 2021-09-07 | Calibrating device for contact rail measuring scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113670163A (en) |
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2021
- 2021-09-07 CN CN202111047110.XA patent/CN113670163A/en active Pending
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