CN211954152U - Detection apparatus for ballastless track bearing platform measures frock - Google Patents
Detection apparatus for ballastless track bearing platform measures frock Download PDFInfo
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- CN211954152U CN211954152U CN202020714376.XU CN202020714376U CN211954152U CN 211954152 U CN211954152 U CN 211954152U CN 202020714376 U CN202020714376 U CN 202020714376U CN 211954152 U CN211954152 U CN 211954152U
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Abstract
The utility model discloses a detection apparatus for frock is measured to ballastless track rail bearing platform can detect rail bearing platform measurement accuracy effectively to revise the deviation value that detects. The device comprises a first lifting support and a second lifting support, wherein the first lifting support is elastically connected with a track bearing platform detection die through an elastic connecting device, and the lifting of the first lifting support is controlled by a hydraulic control system; the track supporting platform detection mold comprises a precise prism, a tray and contact sensors, wherein a precise prism rod is fixed at the center of the bottom of the tray and is perpendicular to the bottom surface of the tray, the contact sensors are respectively installed at the bottom and the side of the tray, 3 contact sensors are installed at the bottom of each tray and are installed according to the design of an equilateral triangle, 2 contact sensors are respectively installed on 2 sides of each tray, and each side sensor is installed at the same height. The utility model discloses the relative coordinate system of standard track board rail bearing platform is established to the mathematical computation model and is established to the simulation standard track structure, has reduced the calculation process of each measurement key point position of track board, has improved computational efficiency and computational accuracy.
Description
Technical Field
The utility model relates to a high-speed railway ballastless track construction technical field, concretely relates to detection device of ballastless track bearing platform measurement frock.
Background
The measurement of the ballastless track bearing platform is an important process before track laying, and the fastening accessory material for track laying is reasonably configured according to the measurement data, so that the fine adjustment workload of the track at the later stage can be reduced, and the replacement rate of the fastening accessory of the track is reduced. However, the rail bearing platform has a large measurement workload and high precision requirement, and currently, many types of measurement tools (molds) are used for measuring the rail bearing platform at home and abroad, but the nominal precision of the measurement tools (molds) cannot be detected by an effective method. Especially, after long-time use, the precision of the measuring tool (die) is reduced, and if the precision cannot be detected by a timely and effective detection method, the measured rail bearing platform data is not real, the quality cannot be guaranteed, and the smoothness of the laid rail is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a detection apparatus for frock is measured to ballastless track rail bearing platform can detect rail bearing platform measurement accuracy effectively to revise the deviation value that detects, can improve the measurement accuracy of rail bearing platform.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a detection device for a ballastless track bearing platform measurement tool comprises a first lifting support, a track bearing platform detection mold and an elastic connection device;
the first lifting support is elastically connected with the track bearing platform detection die through an elastic connecting device, and the lifting of the first lifting support is controlled by a hydraulic control system; the elastic connecting device ensures that the detection die can be freely adjusted when being positioned in the rail bearing groove of the rail plate;
the track bearing platform detection die comprises a precise prism, a tray and contact sensors, wherein a precise prism rod is fixed at the center of the bottom of the tray and is perpendicular to the bottom surface of the tray, the contact sensors are respectively installed at the bottom and the side of the tray, 3 contact sensors are installed at the bottom of each tray and are installed according to the design of an equilateral triangle, 2 contact sensors are respectively installed on 2 sides of the tray, and each side sensor is installed at the same height.
According to the above technical scheme, the utility model provides a detection device of ballastless track rail bearing platform measurement frock, the advantage as follows:
(1) a standard track slab detection platform is built indoors, detection is carried out under the conditions of constant indoor temperature and no vibration, and the measurement precision of the total station is improved;
(2) the method has the advantages that a mathematical calculation model is established by simulating a standard track structure, and a relative coordinate system of a standard track plate rail bearing platform is established, so that the calculation process of each measurement key point position of the track plate is simplified, and the calculation efficiency and the calculation precision are improved;
(3) the rail bearing platform measuring tool (die) precision detection method is initiated at home and abroad, and realizes the precision rapid detection of the rail bearing platform measuring tool (die) by combining the absolute measurement of a high-precision total station, the establishment of a theoretical structure model and a calculation method. The blank of precision detection of the ballastless track bearing platform measuring equipment is filled.
Drawings
Fig. 1 and 2 are schematic structural views of the detection device of the present invention;
fig. 3 and 4 are schematic diagrams of the precision detection method of the detection mold of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, the detection device of the ballastless track supporting platform measuring tool according to the embodiment includes:
the elastic connection means 03143 ensure that the detection die can be freely adjusted when being positioned in the rail bearing groove of the rail plate;
support rail platform detection mould 03142 comprises accurate prism 031421, tray 031422, contact pick-up 031423, and accurate prism pole is fixed and is put at tray bottom central point, and is perpendicular with the tray bottom surface, and contact pick-up installs respectively in tray bottom and side, and 3 contact pick-up of every tray bottom installation are installed according to equilateral triangle design, and 2 contact pick-up of 2 side of tray respectively installation, and every side sensor is installed at same height.
During construction, after the fine adjustment device on the track slab is accurately positioned, the lifting support descends, the detection mold falls into the rail bearing groove along with the support, and the detection mold precisely adjusts the position of the detection mold under the action of the elastic connection device until the bottom surface and the side surface of the tray are completely attached to the bottom surface of the rail bearing table and the jaw surfaces; the contact sensor further detects the close contact condition of the bottom surface and the side surface of the tray and the detection surface of the rail bearing platform in real time, if one surface is not close contact, the sensor displays data abnormity in real time to alarm, and the positioning precision of the detection mold is ensured.
The rail bearing platform detection mold is a core part of the detection device, 2 important structural sizes of a standard rail on the rail bearing platform are simulated for design and manufacture, one is the rail structural height H (the distance from the top surface center of a steel rail to the top surface center of the rail bearing platform is 0.21m), and the other is the standard rail distance L (the distance between the centers of 2 steel rails is 1.505 m). The detection mould is placed in a rail bearing table of a standard rail plate, and the prism center of the detection mould is the steel rail center of the standard rail paved on the rail bearing table under the condition that all contact sensors at the bottom of the tray and the side surface of the tray are completely attached to the rail bearing table surface and the jaw surface (namely, the distance from the prism center to the center of the rail bearing table surface is 0.21m, and the distance between the prism centers of 2 detection moulds is 1.505 m); if the manufacturing precision of the detection die is deviated, the center of the prism of the detection die cannot be accurately described as the center of the steel rail, and precision detection is required before the detection die is delivered to a factory.
The precision detection and calibration method of the rail bearing platform detection mould comprises the following steps:
(1) the standard track plate is arranged on the standard detection platform; before installation, a precision electronic level is adopted to detect the height and the flatness of the detection platform surface, so as to ensure the platform surface to be level;
(2) establishing a relative coordinate system of a standard track slab, taking the connecting line direction of the centers of left and right track bearing platforms in the same row of the standard track slab as a Y axis, taking the center O of the center line of the left and right track bearing platforms as the origin of the coordinate system, and taking the direction which passes through the O point and is vertical to the Y axis as an X axis; setting the coordinate of origin O as (0, 0), designing the structure size according to the standard track board, and calculating the center B of the left rail bearing platform when the center distance between the left and right rail bearing platforms in the same row is 1.5156mLeft side ofCoordinates (0, -0.7578), right rail bearing center BRight sideCoordinates (0, 0.7578);
(3) the method for calculating the center coordinates of the top surface of the steel rail after the standard rail is laid on the rail plate comprises the following steps: according to the design drawing of the rail bearing platform and the standard rail structure, the rail bearing platform surface is designed to have the gradient of 1/40, the center distance of the left rail bearing platform and the right rail bearing platform in the same row is 1.5156m, and the design height of the rail structure is 0.21 m. Left rail center GLeft side ofTheory of the inventionThe coordinates are set to (X)Left side of，YLeft side of) Center G of right railRight sideTheoretical coordinate is set as (X)Right side，YRight side) Adopting an analytic geometry method:
Xleft side of＝0.21·cosα
YLeft side of＝-0.7578+0.21·sinα
XRight side＝0.21·cosα
YRight side＝0.7578-0.21·sinα
Center distance (track gauge) of left and right rails:
the following results are obtained by the above calculation: theoretical coordinate G of center of left steel railLeft side of(0.2099-0.7526), theoretical coordinates G of center of right railRight side(0.2099, 0.7526); the left and right track gauges L are 1.5052 m.
(4) Building a total station:
the high-precision intelligent total station is erected in the axial direction of the detection platform at a position of about 20 meters, and the height of the total station is basically equal to the height of a track board on the detection platform; respectively placing 2 precise spherical prisms into the center holes of the left and right rail bearing tables, wherein the center of the spherical prism is the center of the rail bearing table, and calculating the center B of the left and right rail bearing tables according to the step (2)Left side of、BRight sideThe coordinates are the central coordinates of the left and right spherical prisms, the total station measures and establishes a station by using the spherical prisms and the coordinates in the central holes of the left and right rail bearing platforms, and the coordinate system of the station of the total station is consistent with the coordinate system of the rail plate through calculation;
(5) detecting the precision of the mold:
taking out the precise spherical prisms on the rail bearing table, respectively placing the detection molds on the left rail bearing table and the right rail bearing table, and completely closely attaching the contact points of all the contact sensors to the bottom surface of the rail bearing table and the jaw surfaces; the total station respectively measures the precise prisms on the left and right molds to obtain the actual center coordinates of the left and right prisms, and performs the pushing in the step (3)G of calculationLeft side of、GRight sideAnd carrying out comparative analysis on the theoretical coordinate values, wherein the difference values are smaller than 0.3mm, the detection die is qualified, otherwise, the detection die is calibrated, and the detection is carried out again until the requirements are met.
By the aid of the innovative design and method of the detection device, the manufacturing precision of the detection die and the positioning precision of the detection die in the rail bearing table are guaranteed, the positioning effect of the detection die is improved, and intelligent and accurate detection of the detection die on the rail bearing table is achieved under automatic control of a control system.
To sum up, the utility model discloses detection device simulation standard track structure of ballastless track support rail platform measurement frock establishes mathematical computation model and establishes the relative coordinate system of standard track board support rail platform, has reduced the calculation process of each measurement key point position of track board, has improved computational efficiency and computational accuracy.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (1)
1. The utility model provides a detection device of ballastless track support rail platform measurement frock which characterized in that:
comprises a first lifting bracket (03141), a track bearing platform detection mould (03142) and an elastic connecting device (03143);
the first lifting support (03141) is elastically connected with the track bearing platform detection die (03142) through an elastic connecting device (03143), and the lifting support (03141) is controlled to lift by a hydraulic control system; the elastic connection device (03143) ensures that the detection mould is freely adjusted when being positioned in the rail bearing groove of the rail plate;
support rail platform and detect mould (03142) and include accurate prism (031421), tray (031422), contact pick up (031423), accurate prism pole is fixed and is put at tray bottom central point, and is perpendicular with the tray bottom surface, and contact pick up installs respectively in tray bottom and side, and 3 contact pick up of every tray bottom installation are installed according to equilateral triangle design, 2 contact pick up of 2 side of tray respectively, and every side sensor is installed at same height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020714376.XU CN211954152U (en) | 2020-04-30 | 2020-04-30 | Detection apparatus for ballastless track bearing platform measures frock |
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| CN202020714376.XU CN211954152U (en) | 2020-04-30 | 2020-04-30 | Detection apparatus for ballastless track bearing platform measures frock |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486831A (en) * | 2020-04-30 | 2020-08-04 | 中铁四局集团第五工程有限公司 | Detection device and method for ballastless track bearing platform measurement tool |
| CN114111713A (en) * | 2021-09-27 | 2022-03-01 | 浙江省测绘科学技术研究院 | River-crossing leveling method for large bridge in operation |
| CN116005505A (en) * | 2023-01-10 | 2023-04-25 | 中铁四局集团第五工程有限公司 | Ballastless track rail bearing table detection device |
-
2020
- 2020-04-30 CN CN202020714376.XU patent/CN211954152U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486831A (en) * | 2020-04-30 | 2020-08-04 | 中铁四局集团第五工程有限公司 | Detection device and method for ballastless track bearing platform measurement tool |
| CN114111713A (en) * | 2021-09-27 | 2022-03-01 | 浙江省测绘科学技术研究院 | River-crossing leveling method for large bridge in operation |
| CN114111713B (en) * | 2021-09-27 | 2023-12-12 | 浙江省测绘科学技术研究院 | Method for measuring river crossing level of large bridge in operation |
| CN116005505A (en) * | 2023-01-10 | 2023-04-25 | 中铁四局集团第五工程有限公司 | Ballastless track rail bearing table detection device |
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