CN211256687U - Straddle type monorail track beam linear adjusting system - Google Patents

Straddle type monorail track beam linear adjusting system Download PDF

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Publication number
CN211256687U
CN211256687U CN201921646572.1U CN201921646572U CN211256687U CN 211256687 U CN211256687 U CN 211256687U CN 201921646572 U CN201921646572 U CN 201921646572U CN 211256687 U CN211256687 U CN 211256687U
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support
base
transverse
vertical
sliding seat
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CN201921646572.1U
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刘进章
何家荣
徐鸿飞
段丁华
罗秋清
黄森
韦永林
蒙华昌
刘伟萍
李立忠
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Liuzhou Orient Engineering Rubber Products Co Ltd
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Liuzhou Orient Engineering Rubber Products Co Ltd
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Abstract

The utility model provides a stride a formula monorail track roof beam line type adjustment system, including striding a formula monorail support and three-dimensional adjusting device, three-dimensional adjusting device is including installing slide seat I on the base, vertical guiding mechanism, horizontal guiding mechanism and vertical guiding mechanism, the bent cap top is arranged in to the base, I slidable mounting of slide seat is in the middle of the base, establish the vice I that slides between slide seat I and the base, vertical guiding mechanism establishes between track roof beam and slide seat I, horizontal guiding mechanism is located between two vertical hydraulic jack, vertical guiding mechanism arranges on the base of the I left and right sides of slide seat, it is vertical through oil pressure control, the motion of horizontal and vertical guiding mechanism's hydraulic jack, thereby realize the adjustment of track roof beam line type. The linear adjusting system is simple in structure, convenient to install and adjust, safe and reliable, fine adjustment can be performed on the vertical direction, the horizontal direction and the longitudinal direction of the track beam without using a beam erecting machine, and the support is locked and positioned again by adjusting the horizontal positioning mechanism and the vertical heightening mechanism after the linear is adjusted.

Description

Straddle type monorail track beam linear adjusting system
Technical Field
The utility model relates to a track roof beam line type adjusting device especially relates to a straddle type single track roof beam line type adjustment system.
Background
The straddle type monorail traffic is a form of monorail traffic, rubber wheels are adopted for vehicles to straddle a rail beam integrating beam and rail, guide wheels and stabilizing wheels are arranged on two sides of a bogie besides walking wheels and clamped on two sides of the rail beam, and the vehicles can run safely and stably along the rail.
The straddle type monorail transit is a moderate-capacity urban rail transit mode, is convenient and rapid, occupies less land, has low investment and low noise compared with a subway, and has the advantages of strong adaptability, small turning radius, strong climbing capacity and the like.
The straddle type monorail transit has very high requirements on the line type of the track beam in order to ensure the comfort of travelling, fine line type adjustment needs to be carried out on the track beam when the track beam is erected, the unevenness of the top surface perpendicular to the direction of the track beam is required to be +/-1.5 mm, and the unevenness of the top surface along the direction of the track beam is required to be +/-3 mm.
In addition, in the later operation process of the track beam, the linear change of the track beam can be caused by the settlement of the foundation or the horizontal and vertical deformation of the track beam caused by thermal expansion and cold contraction, so that the safety of track traffic is influenced; the track beam therefore also needs to be regularly adjusted in line form during later operation.
In the prior art, the linear adjustment of the track beam is mainly adjusted through a beam erecting machine and a permanent support, namely the linear height adjustment is realized by increasing or reducing gaskets at the lower part of the permanent support after the track beam is hoisted and leveled, but the method has the disadvantages of high adjustment difficulty, incapability of realizing tiny linear adjustment, time and labor waste and high cost due to the fact that a large-scale beam erecting machine is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a straddle type single track roof beam line type adjustment system to overcome the above-mentioned not enough that prior art exists.
For solving the above technical problem, the utility model discloses the technical scheme who takes is:
a straddle-type monorail track beam linear adjusting system comprises a track beam and a straddle-type monorail support, wherein the straddle-type monorail support comprises an upper base plate, a lower base and a lower base plate, and is connected with the track beam through an upper anchoring bolt and is connected with a cover beam through a lower anchoring bolt; the linear adjusting system for the straddle type monorail track beam further comprises a three-dimensional adjusting device;
the three-dimensional adjusting device comprises a base, and a transverse sliding seat, a longitudinal sliding seat, a vertical adjusting mechanism, a transverse adjusting mechanism and a longitudinal adjusting mechanism which are arranged on the base, wherein the transverse sliding seat and the longitudinal sliding seat which are smaller than the base are sequentially arranged in the middle of the base in a sliding manner;
the transverse adjusting mechanism comprises a transverse hydraulic jack, the transverse hydraulic jack is a bidirectional jack, square grooves are formed in the transverse sliding seat and the longitudinal sliding seat, a main body of the transverse hydraulic jack is fixed on a base in the square grooves through two fixing plates, and piston rods at two ends of the transverse hydraulic jack are respectively connected with a vertical plate I fixedly connected to the transverse sliding seats at two sides of the square grooves;
the longitudinal adjusting mechanism comprises two longitudinal hydraulic jacks, the longitudinal hydraulic jacks are symmetrically arranged on bases at two ends of the transverse sliding seat and the longitudinal sliding seat, the longitudinal hydraulic jacks are bidirectional jacks, a main body of each longitudinal hydraulic jack is connected with the longitudinal sliding seat through a connecting plate and a pin shaft, and piston rods at two ends of each longitudinal hydraulic jack are respectively connected with a vertical plate II fixedly connected on the base; the vertical adjusting mechanism comprises two vertical hydraulic jacks which are symmetrically arranged, and the bottoms of the vertical hydraulic jacks are fixed on the transverse sliding seat; when the three-dimensional adjusting device is used, the three-dimensional adjusting device is arranged between the track beam (I) and the cover beam (II), the top of the cover beam is arranged on the base, and the upper part of the vertical hydraulic jack is tightly propped against the track beam.
Further: the three-dimensional adjusting device comprises an anti-overturning mechanism, the anti-overturning mechanism comprises an anti-overturning support and a supporting jack, the anti-overturning support comprises an upper support, a side support and a bottom support, the upper support, the side support and the bottom support are connected into the anti-overturning support for wrapping the track beam through pin shafts, and a flexible rubber cushion layer is arranged between the anti-overturning support and the track beam;
the support jacks are supported on two sides of the overturn-preventing support, the upper ends of the support jacks are hinged to the waist of the supports on two sides of the overturn-preventing support, the lower ends of the support jacks are hinged to the hinged frames on two sides of the base, the hinged frames are connected with the base through the support sliding seats, and the support sliding seats are connected with the transverse sliding seats through the connecting rod mechanisms.
Further: the straddle type monorail support comprises a transverse positioning mechanism and a vertical positioning mechanism, the vertical positioning mechanism comprises a positioning stud and a locking nut, the positioning studs are symmetrically arranged between a lower base plate and a lower base, a round table is arranged at the lower end of the positioning stud, a flat position is milled in the middle of the positioning stud, the upper part of the flat position is a trapezoidal thread section, and a locking thread section is arranged between the flat position and the round table;
the lower base is provided with a step round hole corresponding to a round platform at the lower part of the heightening stud, the lower part of the lower base plate is provided with a trapezoidal threaded hole corresponding to a trapezoidal threaded section of the heightening stud, the round platform at the lower end of the heightening stud is sleeved in the step round hole of the lower base, the trapezoidal threaded section is screwed into the trapezoidal threaded hole of the lower base plate, the locking threaded section is provided with a locking nut, the heightening stud is clamped by a spanner, the heightening stud is rotated at the flat position, and therefore the stepless adjustment of the height of the straddle-type;
the transverse positioning mechanism comprises a limiting plate, a gasket and a pushing bolt, the limiting plate is arranged in grooves at two ends of the lower base plate, the gasket is arranged between the limiting plate and the end face of the lower base, the pushing bolt is transversely connected into the limiting plate through threads, the lower base of the straddle type monorail support is pushed to transversely move through the pushing bolt, and the quantity of the gasket is adjusted, so that transverse positioning of the straddle type monorail support is achieved.
Further: a sliding pair I is arranged between the transverse sliding seat and the longitudinal sliding seat, a sliding pair II is arranged between the longitudinal sliding seat and the base, a sliding pair III is arranged between the supporting sliding seat and the base, and a sliding pair IV is arranged between the upper seat plate and the lower seat plate.
Since the technical scheme is used, the utility model relates to a straddle type single track roof beam line type adjustment system has following beneficial effect:
1. the vertical, horizontal and longitudinal line types of the track beam can be finely adjusted through the three-dimensional adjusting device without using large-scale equipment such as a beam erecting machine;
2. the three-dimensional adjusting device comprises an overturn-preventing mechanism which can prevent the track beam from overturning in the adjusting process;
the upper end of the supporting jack is hinged with the waist of the overturn-preventing support, the lower end of the supporting jack is hinged with the base through the hinge frame, and a sliding pair II is arranged between the hinge frame and the base support, so that the height of the support can be adjusted to adapt to beam bodies with different heights;
the anti-overturning bracket is coated on the periphery of the track beam, and the upper bracket, the side bracket and the bottom bracket are connected through the pin shaft, so that the anti-overturning bracket can adapt to different beam sizes of the track beam caused by manufacturing errors;
a flexible rubber cushion layer is arranged between the overturn-preventing bracket and the track beam, so that the surface of the beam body is not damaged in the adjusting process;
3. the straddle-type monorail support of the linear adjusting system is provided with a transverse positioning mechanism and a vertical height adjusting mechanism, and after the linear is adjusted by the three-dimensional adjusting device, the straddle-type monorail support can be locked and positioned again by adjusting the transverse positioning mechanism and the vertical height adjusting mechanism;
4. because a connecting rod mechanism is arranged between the sliding seat II and the sliding seat I of the three-dimensional adjusting device, the position of the sliding seat II can be locked through the connecting rod mechanism, and the track beam is prevented from overturning due to the sliding of the sliding seat II;
5. the linear adjusting system for the straddle type monorail track beam is simple in structure, easy to machine and manufacture, low in cost and convenient to install and adjust.
The technical features of a straddle-type monorail track beam linear adjustment system according to one embodiment of the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of a linear adjustment system for a straddle-type monorail track beam according to an embodiment;
FIG. 2 is a schematic structural view of a straddle-type monorail support;
fig. 3 to 4 are schematic structural diagrams of the three-dimensional adjusting device:
FIG. 3 is a front view, and FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic view of the lateral adjustment mechanism;
fig. 6 to 7 are schematic structural views of the longitudinal adjusting mechanism:
FIG. 6 is a front view, and FIG. 7 is a top view;
FIG. 8 is an enlarged view of the portion B of FIG. 2.
In the figure:
1-vertical adjusting mechanism, 101-vertical hydraulic jack, 2-horizontal adjusting mechanism, 201-horizontal hydraulic jack, 202-riser i, 203-connecting nut, 204-fixing plate, 3-vertical adjusting mechanism, 301-vertical hydraulic jack, 302-riser ii, 303-connecting plate, 4-horizontal sliding seat, 401-square groove, 5-vertical sliding seat 6-base, 7-supporting jack, 8-anti-overturning bracket, 81-upper bracket, 82-side bracket, 83-bottom bracket, 9-flexible rubber cushion layer, 10-link mechanism, 11-hinged bracket, 12-supporting sliding seat, 13-sliding pair iii, 14-sliding pair i, 15-sliding pair ii;
40-upper anchor bolt, 41-upper seat plate, 42-lower seat plate, 43-heightening stud, 431-circular truncated cone, 432-flat position, 433-trapezoidal thread section, 434-locking thread section, 44-locking nut, 45-lower seat, 46-lower seat plate, 47-gasket, 48-limiting plate, 49-pushing bolt, 50-lower anchor bolt and 51-sliding pair IV.
Detailed Description
A straddle-type monorail track beam linear adjusting system comprises a track beam and a straddle-type monorail support IV, wherein the straddle-type monorail support comprises an upper base plate 41, a lower base plate 42, a lower base 45 and a lower base plate 46, and is in anchoring connection with a track beam I through an upper anchoring bolt 40 and a cover beam II through a lower anchoring bolt 50; the linear adjusting system for the straddle type monorail track beam further comprises a three-dimensional adjusting device III;
the three-dimensional adjusting device comprises a base 6, a transverse sliding seat 4, a longitudinal sliding seat 5, a vertical adjusting mechanism 1, a transverse adjusting mechanism 2 and a longitudinal adjusting mechanism 3, wherein the transverse sliding seat 4 is smaller than the longitudinal sliding seat 5, the longitudinal sliding seat 5 is smaller than the base, the transverse sliding seat 4 and the longitudinal sliding seat 5 are sequentially arranged in the middle of the base in a sliding mode, the transverse adjusting mechanism 2 is located in the middle of the transverse sliding seat 4, the vertical adjusting mechanism 1 is located on two sides of the transverse adjusting mechanism 2, and the longitudinal adjusting mechanism 3 is located at two ends of the transverse sliding seat 4 and the longitudinal sliding seat 5;
the transverse adjusting mechanism 2 comprises a transverse hydraulic jack 201 which is a bidirectional jack, square grooves 401 penetrating through the transverse sliding seat 4 and the longitudinal sliding seat 5 are formed in the transverse sliding seat 4 and the longitudinal sliding seat 5, a main body of the transverse hydraulic jack is fixed on a base in each square groove through two fixing plates 204, and piston rods at two ends of the transverse hydraulic jack are respectively connected with vertical plates I202 fixedly connected to the transverse sliding seats at two sides of each square groove through connecting nuts;
the longitudinal adjusting mechanism 3 comprises two longitudinal hydraulic jacks 301, the longitudinal hydraulic jacks are symmetrically arranged on bases at two ends of a transverse sliding seat 4 and a longitudinal sliding seat 5, the longitudinal hydraulic jacks are bidirectional jacks, a main body of each longitudinal hydraulic jack is connected with the longitudinal sliding seat through a connecting plate 303 and a pin shaft, and piston rods at two ends of each longitudinal hydraulic jack are respectively connected with a vertical plate II 302 fixedly connected to the base through connecting nuts; the vertical adjusting mechanism 1 comprises two vertical hydraulic jacks 101 which are symmetrically arranged, and the bottoms of the vertical hydraulic jacks are fixed on the transverse sliding seat 4;
when the three-dimensional adjusting device is used, the three-dimensional adjusting device is arranged between the track beam I and the cover beam II, the base is arranged at the top of the cover beam, and the upper part of the vertical hydraulic jack is tightly propped against the track beam; through the vertical hydraulic jack up-and-down motion of hydraulic control, can realize the adjustment of the vertical line type of track roof beam, through the motion of the horizontal hydraulic jack of hydraulic control (both ends piston rod is left simultaneously or is the right motion simultaneously, promote horizontal sliding seat 4 and move left simultaneously or is the right motion simultaneously, the vertical hydraulic jack that horizontal sliding seat 4 supported drives the track roof beam and removes), thereby realize the adjustment of the horizontal line type of track roof beam, through the motion of the vertical hydraulic jack of hydraulic control (both ends piston rod is simultaneously forward or is the backward motion simultaneously, promote vertical sliding seat 5 and move forward simultaneously or backward, horizontal sliding seat 4 and vertical hydraulic jack that vertical sliding seat 5 supported drive the track roof beam and move), thereby realize the adjustment of the vertical line type of track roof beam.
The three-dimensional adjusting device comprises an anti-overturning mechanism, the anti-overturning mechanism comprises an anti-overturning support 8 and a supporting jack 7, the anti-overturning support comprises an upper support 81, a side support 82 and a bottom support 83, the upper support, the side support and the bottom support are connected into the anti-overturning support for coating the track beam through pin shafts, and a flexible rubber cushion layer 9 is arranged between the anti-overturning support and the track beam;
the support jacks are supported on two sides of the overturn-preventing support, the upper ends of the support jacks are hinged to the waist of the supports on two sides of the overturn-preventing support, the lower ends of the support jacks are hinged to the hinge frames 11 on two sides of the base, the hinge frames are connected with the base through support sliding seats 12, and the support sliding seats are connected with the transverse sliding seats 4 through connecting rod mechanisms 10.
The straddle type monorail support IV comprises a transverse positioning mechanism and a vertical height adjusting mechanism, the vertical height adjusting mechanism comprises height adjusting studs 43 and locking nuts 44, the height adjusting studs are symmetrically arranged between a lower base plate 42 and a lower base 45, a round table 431 is arranged at the lower end of each height adjusting stud, a flat position 432 is milled in the middle of each height adjusting stud, a trapezoidal thread section 433 is arranged at the upper part of each flat position, and a locking thread section 434 is arranged between each flat position and the round table;
the lower base 45 is provided with a step round hole corresponding to a round platform at the lower part of the heightening stud, the lower part of the lower seat plate 42 is provided with a trapezoidal threaded hole corresponding to a trapezoidal threaded section of the heightening stud, the round platform at the lower end of the heightening stud is sleeved in the step round hole of the lower base, the trapezoidal threaded section is screwed into the trapezoidal threaded hole of the lower seat plate, the locking threaded section is provided with a locking nut 44, the heightening stud is clamped by a spanner, the heightening stud is rotated at a flat position, and therefore the stepless adjustment of the height of the straddle type monorail;
the transverse positioning mechanism comprises limiting plates 48, gaskets 47 and ejector bolts 49, the limiting plates are arranged in grooves at two ends of the lower base plate 46, the gaskets are arranged between the limiting plates and the end faces of the lower base 45, the ejector bolts are transversely connected into the limiting plates through threads, and the ejector bolts are used for pushing the lower base of the straddle type single-rail support to transversely move and adjusting the quantity of the gaskets, so that transverse positioning of the straddle type single-rail support is realized.
A sliding pair I14 is arranged between the transverse sliding seat 4 and the longitudinal sliding seat 5, a sliding pair II 15 is arranged between the longitudinal sliding seat 5 and the base 6, a sliding pair III 13 is arranged between the supporting sliding seat 12 and the base, and a sliding pair IV 51 is arranged between the upper seat plate and the lower seat plate, so that the friction in line type adjustment can be reduced.

Claims (4)

1. A straddle-type monorail track beam linear adjusting system comprises a track beam and a straddle-type monorail support (IV), wherein the straddle-type monorail support comprises an upper seat plate (41), a lower seat plate (42), a lower seat (45) and a lower seat plate (46), and the straddle-type monorail support is in anchoring connection with the track beam (I) through an upper anchoring bolt (40) and is in anchoring connection with a cover beam (II) through a lower anchoring bolt (50); the method is characterized in that: the linear adjusting system for the straddle type monorail track beam further comprises a three-dimensional adjusting device (III);
the three-dimensional adjusting device comprises a base (6), and a transverse sliding seat (4), a longitudinal sliding seat (5), a vertical adjusting mechanism (1), a transverse adjusting mechanism (2) and a longitudinal adjusting mechanism (3) which are arranged on the base, wherein the transverse sliding seat (4) and the longitudinal sliding seat (5) which are smaller than the base are sequentially arranged in the middle of the base in a sliding manner, the transverse adjusting mechanism (2) is positioned in the middle of the transverse sliding seat (4), the vertical adjusting mechanism (1) is positioned on two sides of the transverse adjusting mechanism (2), and the longitudinal adjusting mechanism (3) is positioned at two ends of the transverse sliding seat (4) and the longitudinal sliding seat (5);
the transverse adjusting mechanism (2) comprises a transverse hydraulic jack (201), the transverse hydraulic jack is a bidirectional hydraulic jack, square grooves (401) are formed in the transverse sliding seat (4) and the longitudinal sliding seat (5), a main body of the transverse hydraulic jack is fixed on a base in each square groove through two fixing plates (204), and piston rods at two ends of the transverse hydraulic jack are respectively connected with vertical plates I (202) fixedly connected to the transverse sliding seats at two sides of each square groove;
the longitudinal adjusting mechanism (3) comprises two longitudinal hydraulic jacks (301), the longitudinal hydraulic jacks are symmetrically arranged on bases at two ends of the transverse sliding seat (4) and the longitudinal sliding seat (5), the longitudinal hydraulic jacks are bidirectional jacks, a longitudinal hydraulic jack main body is connected with the longitudinal sliding seat (5) through a connecting plate (303) and a pin shaft, and piston rods at two ends of each longitudinal hydraulic jack are respectively connected with a vertical plate II (302) fixedly connected to the base; the vertical adjusting mechanism (1) comprises two vertical hydraulic jacks (101) which are symmetrically arranged, and the bottoms of the vertical hydraulic jacks are fixed on the transverse sliding seat (4);
when the three-dimensional adjusting device is used, the three-dimensional adjusting device is arranged between the track beam (I) and the cover beam (II), the top of the cover beam is arranged on the base, and the upper part of the vertical hydraulic jack is tightly propped against the track beam.
2. A straddle-type monorail track beam linear adjustment system as defined in claim 1, wherein: the three-dimensional adjusting device comprises an anti-overturning mechanism, the anti-overturning mechanism comprises an anti-overturning support (8) and a supporting jack (7), the anti-overturning support comprises an upper support (81), a side support (82) and a bottom support (83), the upper support, the side support and the bottom support are connected into the anti-overturning support for wrapping the track beam through pin shafts, and a flexible rubber cushion layer (9) is arranged between the anti-overturning support and the track beam;
the support jack supports on the two sides of the overturn-preventing support, the upper end of the support jack is hinged to the waist of the support on the two sides of the overturn-preventing support, the lower end of the support jack is hinged to the hinge frames (11) on the two sides of the base, the hinge frames are connected with the base through support sliding seats (12), and the support sliding seats are connected with the transverse sliding seats (4) through connecting rod mechanisms (10).
3. A straddle-type monorail track beam linear adjustment system as defined in claim 2, wherein: the straddle type monorail support (IV) comprises a transverse positioning mechanism and a vertical height adjusting mechanism, the vertical height adjusting mechanism comprises height adjusting studs (43) and locking nuts (44), the height adjusting studs are symmetrically arranged between a lower base plate (42) and a lower base (45), a round table (431) is arranged at the lower end of each height adjusting stud, a flat position (432) is milled in the middle of each height adjusting stud, a trapezoidal thread section (433) is arranged at the upper part of each flat position, and a locking thread section (434) is arranged between each flat position and the round table;
the lower base (45) is provided with a step round hole corresponding to a round platform at the lower part of the heightening stud, the lower part of the lower seat plate (42) is provided with a trapezoidal threaded hole corresponding to a trapezoidal threaded section of the heightening stud, the round platform at the lower end of the heightening stud is sleeved in the step round hole of the lower base, the trapezoidal threaded section is screwed into the trapezoidal threaded hole of the lower seat plate, the locking threaded section is provided with a locking nut (44), the heightening stud is clamped by a spanner, the heightening stud is rotated at the flat position, and therefore the height of the straddle type monorail support is adjusted;
the transverse positioning mechanism comprises limiting plates (48), gaskets (47) and pushing bolts (49), the limiting plates are arranged in grooves at two ends of the lower base plate (46), the gaskets are arranged between the limiting plates and the end face of the lower base (45), the pushing bolts are transversely connected into the limiting plates through threads, and the pushing bolts push the lower base of the straddle type single-rail support to transversely move and adjust the quantity of the gaskets, so that transverse positioning of the straddle type single-rail support is realized.
4. A straddle-type monorail track beam linear adjustment system as defined in claim 3, wherein: a sliding pair I (14) is arranged between the transverse sliding seat (4) and the longitudinal sliding seat (5), a sliding pair II (15) is arranged between the longitudinal sliding seat (5) and the base (6), a sliding pair III (13) is arranged between the supporting sliding seat (12) and the base, and a sliding pair IV (51) is arranged between the upper seat plate and the lower seat plate.
CN201921646572.1U 2019-09-29 2019-09-29 Straddle type monorail track beam linear adjusting system Active CN211256687U (en)

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Application Number Priority Date Filing Date Title
CN201921646572.1U CN211256687U (en) 2019-09-29 2019-09-29 Straddle type monorail track beam linear adjusting system

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Application Number Priority Date Filing Date Title
CN201921646572.1U CN211256687U (en) 2019-09-29 2019-09-29 Straddle type monorail track beam linear adjusting system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112921718A (en) * 2021-01-28 2021-06-08 柳州煜乾机械装备股份公司 Continuous jacking and mounting device for light rail track beam and using method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112921718A (en) * 2021-01-28 2021-06-08 柳州煜乾机械装备股份公司 Continuous jacking and mounting device for light rail track beam and using method thereof

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