CN109373988B - Instrument and method for measuring trackless construction of overhead contact system in tunnel - Google Patents
Instrument and method for measuring trackless construction of overhead contact system in tunnel Download PDFInfo
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- CN109373988B CN109373988B CN201811479321.9A CN201811479321A CN109373988B CN 109373988 B CN109373988 B CN 109373988B CN 201811479321 A CN201811479321 A CN 201811479321A CN 109373988 B CN109373988 B CN 109373988B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
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Abstract
The invention discloses a track-free construction measuring instrument and a track-free construction measuring method for an overhead line system in a tunnel, belonging to the technical field of tunnel engineering measurement; the technical problem to be solved is to provide a track-free construction measuring instrument and method for the overhead line system in the tunnel, which has low manufacturing cost, high measuring precision and high efficiency; the technical scheme adopted for solving the technical problems is as follows: the device comprises two vertical adjusting support rods, a horizontal beam base is arranged on the vertical adjusting support rods, an ultrahigh adjusting clamping column is vertically and fixedly arranged on one side above the horizontal beam base, one end of the ultrahigh adjusting beam is hinged with the horizontal beam base, the other end of the ultrahigh adjusting beam is fixed with the ultrahigh adjusting clamping column, a precise sliding rail is fixed on the top end of the ultrahigh adjusting beam, a steel ruler is arranged beside the precise sliding rail in parallel, a sliding block is arranged on the precise sliding rail, a first laser range finder is fixed on the sliding block, and a laser beam emitted by the first laser range finder is perpendicular to the precise sliding rail.
Description
Technical Field
The invention discloses a track-free construction measuring instrument and a track-free construction measuring method for an overhead line system in a tunnel, and belongs to the technical field of tunnel engineering measurement.
Background
Rail transit is a very wide system, and comprises common iron, subways and local railways, and the rail transit has been comprehensively developed in traction power supply modes. When the track traffic tunnel is constructed, the construction is often delayed in civil engineering and track laying, the unit construction is carried out after the station is severely pressed, and the construction difficulty of the contact net is greatly improved due to the cross construction of a plurality of units. In order to ensure the progress of the construction period, the contact network profession needs to carry out installation operation before the track laying unit enters the field, and the difficulty of trackless construction is obvious. In order to ensure quality, it is important to improve the accuracy of trackless construction of the contact net.
The track traffic overhead contact system construction is generally carried out after coarse adjustment of track laying is finished, the overhead contact system construction is carried out under the trackless condition, the reference point is only a CPI or CPII datum point provided by a civil engineering or a track laying unit, the central elevation of a line is measured through a drawing and the datum point, the installation position of a supporting device is positioned, and the construction precision of the overhead contact system can be ensured.
The current measurement technology of the trackless construction of the contact network in the tunnel is that calculation is carried out through a large number of coordinate points, calculation errors are easy to occur, a level gauge and a total station are used for turning points, and even a tower ruler with the height of more than 10 meters is used in places with higher clearance. The tower ruler has large swing amplitude when being longer, and the measurement error is increased. Therefore, coordinate points need to be recalculated after errors are found in the measuring process, the engineering quantity is large, the measuring efficiency is low, and the construction progress and precision are not met.
Disclosure of Invention
The track-free construction measuring instrument and method for the overhead line system in the tunnel overcomes the defects existing in the prior art, and is low in manufacturing cost, high in measuring precision and high in efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a contact net trackless construction measuring instrument in tunnel, including two perpendicular regulation bracing pieces, the horizontal beam base sets up on perpendicular regulation bracing piece, one side of horizontal beam base top is fixed being provided with the superelevation perpendicularly and is adjusted the card post, the one end of superelevation regulation crossbeam is articulated with horizontal beam base, the other end and the superelevation of regulation crossbeam are adjusted the card post fixedly, be fixed with accurate slide rail on the top of superelevation regulation crossbeam, the next door parallel arrangement of accurate slide rail has the steel rule, be equipped with the slider on the accurate slide rail, be fixed with first laser rangefinder on the slider, the laser beam that first laser rangefinder penetrated is perpendicular with accurate slide rail.
Further, the vertical adjusting support rod is fixedly connected with the horizontal cross beam base through a quick barbell buckle.
Further, the ultrahigh adjusting beam is hinged with the horizontal beam base through a rotating shaft.
Further, the total station prism is arranged above the rotating shaft.
Further, the laser beam measuring device also comprises a second laser distance meter, wherein the second laser distance meter is arranged below the horizontal beam base, and the laser beam emitted by the second laser distance meter is perpendicular to the horizontal beam base.
The method for measuring the trackless construction of the overhead contact system in the tunnel is completed based on the trackless construction measuring instrument of the overhead contact system in the tunnel and is used for measuring the length of the hanging column and the included angle between the hanging column and the hanging column bottom plate, and comprises the following steps:
s1, vertically adjusting a vertical adjusting support rod to enable a horizontal cross beam base to be positioned on a horizontal plane, and aligning a rotating shaft to a track center at a track plane design position;
s2, adjusting the ultrahigh adjusting cross beam up and down to enable the ultrahigh adjustment to be the ultrahigh value designed by the locating point;
s3, moving a first laser range finder to enable a sliding block where the first laser range finder is located to move to a design limit value of a hanging column, enabling a laser beam emitted by the first laser range finder to irradiate the top of a tunnel, enabling the position where a light spot is located to be the center position of installation of a hanging column bottom plate, setting the first laser range finder as the bottom reference measurement of the first laser range finder, pressing a measuring key of the first laser range finder, and measuring the distance to be H1;
s4, moving the first laser range finder to enable the emitted laser to irradiate to the left end and the right end of the design position of the bottom plate of the hanging column respectively; recording the distance L of the sliding block where the first laser range finder is located moving in the period; when the emitted laser irradiates the left end of the lifting column bottom plate, the distance to the top of the tunnel is measured to be H2, and when the emitted laser irradiates the right end of the lifting column bottom plate, the distance to the top of the tunnel is measured to be H3; setting a distance C from the bottom of the first laser range finder to the plane of the ultrahigh adjusting beam; and the design value from the rail plane to the ground of the suspension post is B.
S5, calculating to obtain the length l, l= (H1+C) -B of the suspension column;
s6, calculating to obtain an included angle alpha, alpha = of the lifting column bottom plate and the lifting column+β, where β=arctan [ (H3-H2)/L]。
Compared with the prior art, the invention has the following beneficial effects.
The instrument and the method can measure the installation data of the contact net supporting structure in the tunnel under the trackless condition, and have the characteristics of low manufacturing cost, convenient use, simple calculation and less manpower input.
Drawings
Fig. 1 is a front view of an embodiment of the apparatus of the present invention.
Fig. 2 is a top view of an embodiment of the apparatus of the present invention.
FIG. 3 is a schematic diagram of the operation of the method of the present invention.
Fig. 4 is a partial enlarged view of a in fig. 3.
In the figure, the device comprises a 1-vertical adjusting support rod, a 2-horizontal beam base, a 3-total station prism, a 4-first laser range finder, a 5-rotating shaft, a 6-ultra-high adjusting beam, a 7-precise sliding rail, an 8-sliding block, a 9-ultra-high adjusting clamping column, a 10-quick barbell buckle, a 11-steel rule, a 12-second laser range finder, a 13-hanging column and a 14-hanging column base plate.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the trackless construction measuring instrument for the overhead line system in the tunnel comprises two vertical adjustment support rods 1, wherein a horizontal beam base 2 is arranged on the vertical adjustment support rods 1, and the vertical adjustment support rods 1 and the horizontal beam base 2 are fixedly connected through a quick barbell buckle 10. One side of horizontal crossbeam base 2 top is fixed being provided with superelevation regulation card post 9 perpendicularly, and the one end of superelevation regulation crossbeam 6 is articulated through pivot 5 with horizontal crossbeam base 2, and the other end of superelevation regulation crossbeam 6 is fixed with superelevation regulation card post 9, is fixed with accurate slide rail 7 on the top of superelevation regulation crossbeam 6, and the next door parallel arrangement of accurate slide rail 7 has steel ruler 11, is equipped with slider 8 on the accurate slide rail 7, is fixed with first laser range finder 4 on the slider 8, and the laser beam that first laser range finder 4 penetrated is perpendicular with accurate slide rail 7.
The instrument adopts the quick barbell buckle 10, can be conveniently disassembled and assembled in the moving process, and can be quickly adjusted to the horizontal position when the horizontal beam base 2 is adjusted.
The device also comprises a prism 3 for the total station, wherein the prism 3 for the total station is arranged above the rotating shaft 5. The prism 3 for the total station is used for being matched with the total station for use when the track laying profession does not provide the line center and the elevation, and can reduce a large amount of data calculation. The device also comprises a second laser range finder 12, wherein the second laser range finder 12 is arranged below the horizontal beam base 2, and the laser beam emitted by the second laser range finder 12 is perpendicular to the horizontal beam base 2. The second laser rangefinder 12 is used to approve the track elevation, i.e. the height of the instrument placement shaft 5 from the tunnel bottom.
As shown in fig. 3 and 4, the invention further provides a method for measuring the trackless construction of the overhead contact system in the tunnel, which is completed based on the trackless construction measuring instrument of the overhead contact system in the tunnel and is used for measuring the length of the hanging column 13 and the included angle between the hanging column 13 and the hanging column bottom plate 14, and comprises the following steps:
s1, vertically adjusting a vertical adjusting support rod 1 to enable a horizontal cross beam base 2 to be positioned on a horizontal plane, and aligning a rotating shaft 5 at the center of a track at the design position of the track plane;
s2, adjusting the ultrahigh adjusting cross beam 6 up and down to enable the ultrahigh to be adjusted to a design ultrahigh value of the positioning point;
s3, moving the first laser range finder 4, enabling a sliding block 8 where the first laser range finder 4 is located to move to a design limit value of a hanging column 13, enabling a laser beam emitted by the first laser range finder 4 to irradiate on the top of a tunnel, enabling a light spot to be located at the center position of installation of a hanging column bottom plate 14, setting the first laser range finder 4 as the bottom reference measurement, pressing a measuring key of the first laser range finder 4, and measuring the distance to be H1;
s4, moving the first laser range finder 4 to enable the emitted laser to irradiate the left end and the right end of the design position of the suspension column bottom plate 14 respectively; and records the distance L that the slider 8 of the first laser rangefinder 4 is moving during; the distance to the top of the tunnel is measured as H2 when the outgoing laser is irradiated to the left end of the column bottom plate 14, and the distance to the top of the tunnel is measured as H3 when the outgoing laser is irradiated to the right end of the column bottom plate 14; setting a distance C from the bottom of the first laser range finder 4 to the plane of the ultrahigh adjusting beam 6; setting the design value from the rail plane to the ground of the suspension column as B;
s5, calculating to obtain the length l, l= (H1+C) -B of the hanging column 13;
s6, calculating to obtain included angles alpha, alpha = of the lifting column bottom plate 14 and the lifting column 13+β, where β=arctan [ (H3-H2)/L]。
The main idea of the method is that the instrument is quickly placed to a required position according to elevation, track center, superelevation and other data obtained by a track laying unit, and the required superelevation is adjusted to a design value. The laser rangefinder moves in parallel on the track plane, the laser rangefinder is adjusted in place according to the design limit value of the overhead contact system, the red laser irradiation tunnel top position of the laser rangefinder is the installation center position, and the required hanging column length is obtained according to the measured value. The sliding laser range finder calculates the included angle between the bottom plate of the lifting column and the lifting column through a trigonometric function by measuring the difference value between different positions and the distance from the top of the tunnel.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (6)
1. The utility model provides a contact net trackless construction measuring instrument in tunnel which characterized in that: including two perpendicular regulation bracing pieces (1), horizontal beam base (2) set up on perpendicular regulation bracing piece (1), one side of horizontal beam base (2) top is fixed being provided with super high regulation card post (9) perpendicularly, the one end and the horizontal beam base (2) of super high regulation crossbeam (6) are articulated, the other end and the super high regulation card post (9) of super high regulation crossbeam (6) are fixed, be fixed with accurate slide rail (7) on the top of super high regulation crossbeam (6), next door parallel arrangement of accurate slide rail (7) has steel ruler (11), be equipped with slider (8) on accurate slide rail (7), be fixed with first laser range finder (4) on slider (8), the laser beam that first laser range finder (4) launched is perpendicular with accurate slide rail (7).
2. The in-tunnel catenary trackless construction measurement instrument according to claim 1, wherein: the vertical adjusting support rod (1) is fixedly connected with the horizontal cross beam base (2) through the quick barbell buckle (10).
3. The in-tunnel catenary trackless construction measurement instrument according to claim 1, wherein: the ultrahigh adjusting beam (6) is hinged with the horizontal beam base (2) through a rotating shaft (5).
4. A tunnel catenary trackless construction measurement instrument according to claim 3, wherein: the total station prism (3) is arranged above the rotating shaft (5).
5. The in-tunnel catenary trackless construction measurement instrument according to claim 1, wherein: the laser beam measuring device further comprises a second laser range finder (12), wherein the second laser range finder (12) is arranged below the horizontal beam base (2), and laser beams emitted by the second laser range finder (12) are perpendicular to the horizontal beam base (2).
6. The method for measuring the trackless construction of the overhead contact system in the tunnel is characterized by being completed based on the trackless construction measuring instrument of the overhead contact system in the tunnel according to any one of claims 1 to 5 and used for measuring the length of a hanging column (13) and the included angle between the hanging column (13) and a hanging column bottom plate (14), and comprises the following steps:
s1, vertically adjusting a vertical adjusting support rod (1) to enable a horizontal cross beam base (2) to be positioned on a horizontal plane, and aligning a rotating shaft (5) at the center of a track at a track plane design position;
s2, adjusting the ultrahigh adjusting cross beam (6) up and down to enable the ultrahigh to be adjusted to a design ultrahigh value of the positioning point;
s3, moving the first laser range finder (4), enabling a sliding block (8) where the first laser range finder (4) is located to move to a design limit value of a hanging column (13), enabling the first laser range finder (4) to emit laser beams to irradiate at the top of a tunnel, enabling a light spot to be the center position of installation of a hanging column bottom plate (14), setting the first laser range finder (4) as the bottom reference measurement of the first laser range finder, pressing a measuring key of the first laser range finder (4), and measuring the distance to be H1;
s4, moving the first laser range finder (4) to enable the emitted laser to irradiate to the left end and the right end of the design position of the lifting column bottom plate (14) respectively; and recording the distance L of the sliding block (8) where the first laser range finder (4) is positioned moving in the period; the distance to the top of the tunnel is measured as H2 when the emitted laser irradiates the left end of the suspension post bottom plate (14), and the distance to the top of the tunnel is measured as H3 when the emitted laser irradiates the right end of the suspension post bottom plate (14); setting a distance C from the bottom of the first laser range finder (4) to the plane of the ultrahigh adjusting beam (6); setting the design value from the rail plane to the bottom surface of the suspension column as B;
s5, calculating to obtain the length l, l= (H1+C) -B of the hanging column (13);
s6, calculating to obtain an included angle alpha, alpha=pi/2+beta between the lifting column bottom plate (14) and the lifting column (13), wherein,
β＝arctan[(H3-H2)/L]。
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| CN201811479321.9A CN109373988B (en) | 2018-12-05 | 2018-12-05 | Instrument and method for measuring trackless construction of overhead contact system in tunnel |
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Families Citing this family (8)
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| EP4079597A1 (en) * | 2019-12-17 | 2022-10-26 | Telefonos, Lineas y Centrales, S.A. | Method for in-situ and real-time collection and processing of geometric parameters of railway lines |
| CN112066948B (en) * | 2020-09-10 | 2022-05-31 | 济南蓝动激光技术有限公司 | Automatic measuring device and method for mounting position of suspension post and inclination angle of fixed bottom plate |
| CN112444174B (en) * | 2020-11-17 | 2022-04-01 | 中铁十二局集团电气化工程有限公司 | Tool and method for measuring boundary limit of hanging column of rigid contact net at speed of 160km per hour |
| CN112697093B (en) * | 2020-12-22 | 2022-09-06 | 中铁十二局集团电气化工程有限公司 | Method for calculating length and angle of trackless measuring suspension post in shield tunnel |
| CN112528386B (en) * | 2020-12-31 | 2022-05-06 | 中铁建电气化局集团第三工程有限公司 | Trackless accurate measurement method for suspension point position of contact network in subway tunnel |
| CN114030394B (en) * | 2021-11-29 | 2022-12-16 | 中铁十一局集团电务工程有限公司 | Subway contact net full-parameter trackless measurement construction method |
| CN116147597B (en) * | 2023-04-24 | 2023-06-20 | 四川跃航智能设备制造有限公司 | Electric automobile charging pile installation reference measurement device and method |
| CN117146748B (en) * | 2023-10-30 | 2024-01-05 | 中国铁建电气化局集团有限公司 | Method and device for measuring hard cross beam of overhead contact system |
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