Device for calibrating geometric parameter measuring instrument of overhead line system
By simulating rail components and contact wire measuring instrument fixing components, and combining laser measurement and bubble level calibration, the problems of inconvenience in using the contact wire geometric parameter measuring instrument calibration bench and the safety risks of high-altitude operations were solved, achieving efficient and accurate calibration results.
Patent Information
- Application Number
- CN202423179945.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing calibration benches for overhead contact line geometric parameter measuring instruments require large laboratories, are inconvenient to use, pose safety risks for working at heights, and have complex calibration operations with poor repeatability and stability.
A device for calibrating a contact wire geometric parameter measuring instrument is provided, comprising a simulated rail assembly, a simulated contact wire assembly, and a contact wire measuring instrument fixing assembly. These components simulate the contact wire geometric parameters, employing laser measurement and bubble level calibration, reducing site requirements, simplifying operation, and improving accuracy.
It reduces the requirements for site conditions, decreases the risks of working at heights, improves the convenience and accuracy of calibration, simplifies the operation process, and ensures the reliability and efficiency of measurement traceability.
Smart Images
Figure CN223610784U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of contact network measurement, especially the device for contact network geometry parameter measuring instrument calibration. BACKGROUND
[0002] The contact network is a high-voltage transmission network for providing power for electric locomotives and motor cars to take current from the pantograph, which is composed of contact network contact conductor, suspension support device, positioning device, pillar and foundation. Figure 1 The contact network geometry parameter measuring instrument is used for measuring the geometry parameters of the contact network, as shown in Figure 1 The contact network geometry parameter measuring instrument is used for measuring the geometry parameters of the contact network, as shown in
[0003] However, the existing contact network geometry parameter measuring instrument test bench has the following defects: 1. Since the simulated contact line height recurrence value range is (5100-6500) mm, and the simulated pillar side limit value is (2400-6500) mm, a laboratory with a height and width of about 7 meters is required, which is difficult to obtain, resulting in limited use of the contact network geometry parameter measuring instrument test bench; 2. The existing test bench requires high-altitude operation for daily maintenance and inspection, which has a falling risk, is troublesome for safety protection, and is inconvenient to adjust after high-altitude fixation; 3. The reliability of the traceability of the test bench recurrence value is difficult to monitor and control due to the high layout space, air disturbance, and temperature difference gradient, and the operation process is complex, low in efficiency, and greatly affected by human factors, resulting in poor repeatability and stability of the actual value of the height and pull-out value calibration.
[0004] Therefore, it is necessary to provide a device for contact network geometry parameter measuring instrument calibration to improve the convenience of contact network geometry parameter measuring instrument calibration, reduce the operation difficulty of contact network geometry parameter measuring instrument calibration, and improve the accuracy of contact network geometry parameter measuring instrument calibration. Utility model content
[0005] The utility model provides a device for overhead line system geometric parameter measuring instrument calibration, including simulation rail assembly, simulation contact wire assembly and contact net measuring instrument fixed assembly, wherein, simulation rail assembly is used for simulating rail, simulation contact wire assembly is used for simulating contact wire, contact net measuring instrument fixed assembly is used for fixing contact net geometric parameter measuring instrument, simulation rail calibration platform is located one side of simulation contact wire assembly, contact net measuring instrument fixed assembly sets up on simulation rail calibration platform, contact net measuring instrument fixed assembly sets up one side of simulation rail calibration platform, the laser of contact net geometric parameter measuring instrument emission is towards simulation contact wire assembly.
[0006] Further, the simulation rail calibration platform includes a fixed beam, both ends of the bottom of the fixed beam are provided with first adjustable feet, one end of the top of the fixed beam is provided with a left end simulation rail, the other end of the top of the fixed beam is provided with a right end simulation rail, the distance between the left end simulation rail and the right end simulation rail is adjustable, a zero reference beam is provided between the left end simulation rail and the right end simulation rail, the zero reference beam is slidingly arranged on the top of the fixed beam, and the contact net measuring instrument fixed assembly is used to fix the contact net measuring instrument on one side of the left end simulation rail, the right end simulation rail and the zero reference beam.
[0007] Further, the first adjustable foot includes an adjustable screw, and the length of the adjustable screw is adjustable.
[0008] Further, the fixed beam is provided with a first longitudinal level bubble and a first transverse level bubble.
[0009] Further, the contact net measuring instrument fixed assembly includes a left end locker, a right end locker and a fixed corrector, and the left end locker, the right end locker and the fixed corrector are used to fix the contact net measuring instrument on one side of the left end simulation rail, the right end simulation rail and the zero reference beam.
[0010] Further, the left end locker and the right end locker are consistent in structure, the left end locker includes a left end locking plate and a left end locking column, the left end locking plate is arranged on the fixed beam, the left end locking column is rotatably arranged on the left end locking plate, the left end locking column is threadedly connected with the left end locking plate, and the left end locking column faces the left end simulation rail.
[0011] Further, the fixed corrector comprises a first correction plate, a first correction column, a second correction plate and a second correction column, the first correction plate and the second correction plate are arranged on the fixed beam, the first correction column is arranged on the first correction plate in rotation, the first correction column is threadedly connected with the first correction plate, the second correction column is arranged on the second correction plate in rotation, the second correction column is threadedly connected with the second correction plate, and the first correction column and the second correction column are both directed towards the zero reference beam.
[0012] Further, the simulated rail assembly comprises a simulated contact line base, a simulated contact line arranged on the simulated contact line base, and a simulated column arranged on the simulated contact line base.
[0013] Further, the plurality of simulated contact lines comprises a planar contact line and a plurality of cylindrical contact lines.
[0014] Further, the upper cross beam is provided with a second longitudinal bubble level and a second transverse bubble level. BRIEF DESCRIPTION OF DRAWINGS
[0015] The present specification will be further illustrated in the manner of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same numbers represent the same structures, in which:
[0016] Figure 1 is a schematic diagram of a contact net geometry parameter measuring instrument measuring a contact net geometry parameter;
[0017] Figure 2 is a structural schematic diagram of a device for calibrating a contact net geometry parameter measuring instrument according to some embodiments of the present specification;
[0018] Figure 3 is a structural schematic diagram after installing a contact net geometry parameter measuring instrument according to some embodiments of the present specification.
[0019] In the drawings, 1 is a simulated contact line assembly, 11 is a simulated contact line base, 12 is a simulated contact line, 13 is a simulated column, 2 is a simulated rail assembly, 21 is a fixed beam, 22 is a left end simulated rail, 23 is a right end simulated rail, 24 is a zero reference beam, 25 is a first longitudinal bubble level, 26 is a first transverse bubble level, 27 is a first adjustable foot, 3 is a contact net geometry parameter measuring instrument fixed assembly, 311 is a left end locking plate, 312 is a left end locking column, 331 is a first correction plate, 332 is a first correction column, 333 is a second correction plate, 334 is a second correction column, and 4 is a contact net geometry parameter measuring instrument. DETAILED DESCRIPTION
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some examples or embodiments of the present specification, and for those skilled in the art, the present specification can also be applied to other similar scenarios without creative labor. Unless it is obvious from the language environment or otherwise stated, the same reference numbers in the drawings represent the same structure or operation.
[0021] Figure 2 is a structural schematic diagram of a catenary geometric parameter measuring instrument 4 calibration system according to some embodiments of the present specification, Figure 3 is a structural schematic diagram after the catenary geometric parameter measuring instrument 4 is installed according to some embodiments of the present specification, as Figure 2 and Figure 3 shown, the catenary geometric parameter measuring instrument 4 calibration system can include a simulated rail assembly 2, a simulated contact wire assembly 1, and a catenary geometric parameter measuring instrument fixing assembly 3, wherein the simulated rail assembly 2 is used to simulate a rail, the simulated contact wire assembly 1 is used to simulate a contact wire, and the catenary geometric parameter measuring instrument fixing assembly 3 is used to fix the catenary geometric parameter measuring instrument 4. The simulated rail assembly 2 is located on one side of the simulated contact wire assembly 1, the catenary geometric parameter measuring instrument fixing assembly 3 is arranged on the simulated rail assembly 2, the catenary geometric parameter measuring instrument fixing assembly 3 is arranged on one side of the simulated rail assembly 2, and the laser emitted by the catenary geometric parameter measuring instrument 4 is directed towards the simulated contact wire assembly 1.
[0022] Specifically, when the catenary geometric parameter measuring instrument 4 is calibrated, the catenary geometric parameter measuring instrument 4 is fixed and clamped on the simulated rail assembly 2, the simulated contact wire assembly 1 is placed on one side of the simulated rail assembly 2 and its geometric parameters are measured by the catenary geometric parameter measuring instrument 4, the catenary geometric parameter measuring instrument 4 is installed horizontally, the simulated contact wire assembly 1 is arranged in the horizontal direction on one side of the measurement head of the catenary geometric parameter measuring instrument 4, the catenary geometric parameter measuring instrument 4 emits horizontal measurement laser to the simulated contact wire assembly 1 to simulate the measurement of catenary geometric parameters, and then the catenary geometric parameter measuring instrument 4 is calibrated. Based on the constancy of the measurement definition, the spatial coordinate system rotation invariance, and the functional characteristics of the measurement equipment, the plane rectangular coordinate system composed of the rail top (X-axis) in the cross section perpendicular to the longitudinal center of the line and the rail center perpendicular (Y-axis) is rotated by 90 degrees around the X-axis to the horizontal plane, i.e. the plane coordinate system composed of the line longitudinal Z-axis and the X-axis. The mutual geometric relationship between the simulated rail, the simulated wire, and the measuring instrument of the catenary geometric parameter measuring instrument 4 calibration system after rotation remains unchanged as defined, while the measuring instrument is essentially a special positioning defined range (angle) meter due to its physical principle, which also determines that its function should also be usable after rotation.
[0023] like Figure 2 As shown, the simulated rail assembly 2 includes a fixed beam 21. Both ends of the bottom of the fixed beam 21 are provided with first adjustable bases 27. A left simulated rail 22 is provided at one end of the top of the fixed beam 21, and a right simulated rail 23 is provided at the other end of the top of the fixed beam 21. The distance between the left and right simulated rails 22 and 23 is adjustable. A zero-position reference beam 24 is provided between the left and right simulated rails 22 and 23, and is slidably mounted on the top of the fixed beam 21. The contact wire geometric parameter measuring instrument fixing assembly 3 is used to fix the contact wire geometric parameter measuring instrument 4 to one side of the left simulated rail 22, right simulated rail 23, and zero-position reference beam 24. The first adjustable base 27 includes an adjustable screw, the length of which is adjustable. A first longitudinal level 25 and a first transverse level 26 are provided on the fixed beam 21.
[0024] Specifically, the simulated rail top surface and gauge reproduction values are represented by the simulated rail 22 on the left and the simulated rail 23 on the right. The zero-position reference beam 24 is used for weight compensation of the contact wire geometric parameter measuring instrument 4 after placement, and is also used to reproduce the simulated contact wire guide height and pull-out values. The fixed beam 21 is adjusted by the first adjustable base 27 to ensure that the simulated rail top surface is perpendicular to the ground.
[0025] like Figure 2 As shown, the contact wire geometric parameter measuring instrument fixing assembly 3 includes a left-end locking device, a right-end locking device, and a fixing calibrator. The left-end locking device, right-end locking device, and fixing calibrator are used to fix the contact wire geometric parameter measuring instrument 4 to one side of the left-end simulated rail 22, the right-end simulated rail 23, and the zero-position reference beam 24. The left-end locking device has the same structure as the right-end locking device. The left-end locking device includes a left-end locking plate 311 and a left-end locking pin 312. The left-end locking plate 311 is set on the fixing beam 21, and the left-end locking pin 312 is rotatably set on the left-end locking plate 311. The left-end locking pin 312 is threadedly connected to the left-end locking plate 311, and the left-end locking pin 312 faces the left-end simulated rail 22. The fixed calibrator includes a first calibrator plate 331, a first calibrator column 332, a second calibrator plate 333, and a second calibrator column 334. The first calibrator plate 331 and the second calibrator plate 333 are mounted on the fixed beam 21. The first calibrator column 332 is rotatably mounted on the first calibrator plate 331 and is threadedly connected to the first calibrator plate 331. The second calibrator column 334 is rotatably mounted on the second calibrator plate 333 and is threadedly connected to the second calibrator plate 333. Both the first calibrator column 332 and the second calibrator column 334 face the zero-position reference beam 24.
[0026] Specifically, the overhead line geometry parameter measuring instrument 4 is fixed on the calibration table through the left end lock and the right end lock, and is compensated for gravity reduction through the fixed corrector and the zero reference beam 24. The dial gauge is clamped on the fixed corrector, the corresponding compression value is read on the dial gauge before the sighting part of the overhead line geometry parameter measuring instrument 4 is installed, the fixed corrector is adjusted after the sighting part of the overhead line geometry parameter measuring instrument 4 is installed, and the dial gauge is restored to the compression value before installation, which is also used to simulate the reproduction of the contact wire height and the pull-out value of the simulated rail assembly 2. The side surface of the zero reference beam 24 is coplanar with the left end simulated rail 22 and the right end simulated rail 23, and the side surface of the zero reference beam 24 is used as the simulated rail plane, so that the distance from the "point" to the "plane" on the same section can be directly measured, and the purpose of directly reproducing the contact wire height and the pull-out value on the simulated rail assembly 2 is achieved.
[0027] As shown in Figure 2 , the simulated contact wire assembly 1 comprises a simulated contact wire base 11, a simulated contact wire 12 arranged on the simulated contact wire base 11, and a simulated column 13 arranged on the simulated contact wire base 11.
[0028] Specifically, the simulated contact wire 12 simulates the actual contact wire, and the reproduction value of the measured height and pull-out value in actual work. The parallelism of the plane contact wire and the common plane of the two simulated rails is adjusted first, that is, the left end simulated rail 22 and the right end simulated rail 23 of the simulated rail assembly 2 are measured by using a laser tracker, the common plane of the simulated rails is obtained, the simulated contact wire 12 is measured by using the laser tracker, the generatrix of the simulated contact wire 12 is obtained, the parallelism of the common plane of the simulated rails and the generatrix of the simulated contact wire 12 is calculated, the generatrix of the simulated contact wire 12 is adjusted to be parallel to the common plane of the simulated rails according to the parallelism, and the perpendicularity of the simulated column and the simulated contact wire is adjusted through the simulated contact wire base, so as to ensure that the simulated contact wire assembly is parallel to the calibration table.
[0029] Figure 2 The overhead line geometry parameter measuring instrument calibration system has at least the following advantages:
[0030] First, the site working condition requirement is not high, the laboratory temperature and humidity are easy to control, and the investment and operation and maintenance cost are less;
[0031] Second, the simulated contact wire assembly is easy to adjust and install at a near-ground height, the high-altitude operation supporting tool protection facilities are saved, and the corresponding safety hazards are avoided.
[0032] Third, advanced means are easy to use to realize more precise and rapid calibration and reproduction of the standard height and pull-out value, and the value traceability is accurate, efficient and reliable.
[0033] Four, based on the definition of the constancy of measurement invariance in space coordinate system and the function of the measuring equipment, the core "invariant" main contradiction "strain" is grasped, and the original vertical direction measurement contact line height and pull-out value is converted into horizontal direction measurement. The contact line geometry parameter measuring instrument 4 is placed on the ground in the horizontal direction, and the new calibration test bed of the contact line geometry parameter measuring instrument 4 is measured. The contact line geometry parameter measuring instrument 4 is fixed and controlled by the contact line geometry parameter measuring instrument fixed assembly 3 after rotation. The fixed corrector and zero reference beam 24 are adopted to compensate the influence of the gravity direction deformation of the sighting part of the contact line geometry parameter measuring instrument 4 before rotation, and the original configuration of the contact line geometry parameter measuring instrument 4 is restored. In addition, the left end locker and the right end locker are used to restore the gravity of the ruler body by applying pressure at both ends. The simulation steel rail assembly 2, the simulation contact line assembly 1 and the contact line geometry parameter measuring instrument fixed assembly 3 are used together to realize efficient and reliable measurement of the actual value of the height and the pull-out value.
[0034] Finally, it should be understood that the embodiments described herein are merely for the purpose of illustrating the principles of the embodiments described herein. Other modifications can also be within the scope of the present description. Therefore, as an example but not limitation, alternative configurations of the embodiments described herein can be considered consistent with the teachings of the present description. Accordingly, the embodiments of the present description are not limited to the embodiments explicitly introduced and described in the present description.
Claims
1. Device for calibration of a catenary geometry parameter measuring instrument, characterised in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
2. The device for calibration of the overhead line geometry parameter measuring instrument according to claim 1, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
3. The device for calibration of the overhead line geometry measuring instrument according to claim 2, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
4. The device for calibration of the overhead line geometry measuring instrument according to claim 2, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
5. The device for calibration of the overhead line geometry measuring instrument according to claim 2, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
6. The device for calibration of the overhead line geometry measuring instrument according to claim 5, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
7. The device for calibration of the overhead line geometry measuring instrument according to claim 5, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
8. The device for calibration of the overhead line geometry parameter measuring instrument according to any one of claims 1-6, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.
9. The device for calibration of the overhead line geometry parameter measuring instrument according to any one of claims 1-6, characterized in that, The utility model relates to a contact network simulation device, including analog rail assembly, analog contact line assembly and contact network measuring instrument fixed assembly, wherein, the analog rail assembly is used for simulating rail, the analog contact line assembly is used for simulating contact line, the contact network measuring instrument fixed assembly is used for fixing contact network geometry parameter measuring instrument, the analog rail assembly is located in one side of the analog contact line assembly, the contact network measuring instrument fixed assembly sets up on the analog rail assembly, the contact network measuring instrument fixed assembly sets up in one side of the analog rail assembly, the laser that contact network geometry parameter measuring instrument emits is towards the analog contact line assembly.