Fine-tuning mark assembly for measuring and controlling plane position of wind-disturbance-resistant ballastless track plate of large-span cable-stayed bridge

Abstract

The invention discloses a fine-tuning mark assembly for measuring and controlling the plane position of a wind-disturbance-resistant ballastless track plate of a large-span cable-stayed bridge. The fine-tuning mark assembly comprises a forced observation platform capable of carrying out plane fine tuning, a datum line string pulling device capable of being tightened and locked and a track plate plane position fine-tuning quantity reading device installed on the basis of the top face of a tool rail. The forced observation platform comprises a fixed base, a measuring platform support column, a measuring platform panel, a plane fine tuning assembly and an instrument mounting seat; the datum line string pulling device comprises a line wheel capable of being locked, a mounting rod and a chord outlet rod; the track plate plane position fine adjustment quantity reading device comprises a top plate, a track top plate, a first side plate, a second side plate, a plane reading reticle and the like. The device is simple to operate, stable in structure, easy to adjust, clear and visual; the method solves the problems that a total station on a large-span cable-stayed bridge is poor in station setting precision due to external influence, and the window time meeting the measurement requirement is short, breaks through the limitation in traditional high-speed railway ballastless track construction measurement, and improves the construction efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of construction control technology of high-speed railway ballastless track, and particularly relates to a kind of big span cable-stayed bridge wind interference ballastless track slab plane position measurement and control fine adjustment sign assembly. BACKGROUND

[0002] At present, in the construction process of laying ballastless track on large-span cable-stayed bridge, due to large bridge span, complex bridge structure, it is easy to be affected by load, temperature, wind and other factors to produce large deformation. In most construction time, intelligent total station is affected by unstable bridge body on the main bridge, which leads to difficult to achieve the relevant provisions of the current "high-speed railway engineering measurement specification" (TB10601-2009) for station setting precision, so as to lead to the time window that can meet the intelligent total station operation is very little. At the same time, the CP III control point buried in the top surface of the main bridge crash barrier is greatly affected by temperature, sunlight, wind and other environmental factors, which leads to the three-dimensional coordinates of the CP III control point in different time periods have multiple values, uncertainty and time-varying characteristics. If the total station uses such unstable CP III control point as known point for constraint, it will inevitably lead to poor station setting precision and low result reliability, so as to guide the related work of ballastless track slab plane position measurement and control on the main beam of large-span cable-stayed bridge. Therefore, considering the great difficulty of ballastless track laying control measurement on large-span cable-stayed bridge, it is necessary to optimize and improve the existing measurement and control device to better meet the special needs of ballastless track construction control measurement on large-span cable-stayed bridge. SUMMARY

[0003] In order to overcome the defects existing in the prior art, the present application provides a kind of big span cable-stayed bridge wind interference ballastless track slab plane position measurement and control fine adjustment sign assembly.

[0004] The big span cable-stayed bridge wind interference ballastless track slab plane position measurement and control fine adjustment sign assembly of the present application comprises three parts: a forced observation platform that can be adjusted in plane, a reference line tensioning device that can be tightly tightened and locked, and a track slab plane position fine adjustment reading device based on the top surface of the tool rail.

[0005] The forced observation platform comprises a fixed base, a measurement platform support, a measurement platform panel, a plane fine adjustment assembly and an instrument mounting seat. The measurement platform support is connected above the fixed base, the measurement platform panel is connected above the measurement platform support, the plane fine adjustment assembly is installed above the measurement platform panel, the instrument mounting seat is provided on the top surface of the plane fine adjustment assembly, and the instrument mounting seat is equipped with instrument fixing bolts. The plane fine adjustment assembly adjusts and locks the plane position of the instrument mounting seat. The measurement prism and the reference line tensioning device are installed on the instrument mounting seat. The instrument fixing bolt is the fixing bolt used by the prism base.

[0006] The reference line stringing device includes a lockable reel, a mounting rod, and a string release rod. The reel is located to the side of the mounting rod and is connected to the mounting rod. The string release rod is located above the mounting rod and is also connected to the mounting rod. It is used to control the string release point position, ensuring that the plane position of the string release point is aligned with the center plane of the base and the center plane of the prism.

[0007] The track plate plane position fine adjustment reading device includes a top plate, a rail top plate parallel to the top plate, and first and second side plates perpendicular to the top and rail top plates. The rail top plate, first and second side plates are all located below the top plate. The top plate, rail top plate, first and second side plates together form a reading cavity, and the rail top plate, first and second side plates together form a receiving cavity. The first side plate is equipped with several outer rail waist support members, and the second side plate is equipped with several inner rail waist support members and several rail support members. A reading microscope and reading cavity lighting device are installed on the top plate, and a plane reading graticule is installed on the rail top plate.

[0008] Furthermore, a plurality of mounting holes are provided on the fixed base, and the entire device is fixed to the ground by expansion bolts.

[0009] Furthermore, an inner cavity is provided in the mounting rod, which can be locked on the top rod of the prism support.

[0010] Furthermore, the outer rail waist supporting member, the inner rail waist supporting member and the rail supporting member all include a push rod and an operating handle, and the end of the push rod different from the operating handle extends into the accommodating cavity.

[0011] Furthermore, the rail top holders are respectively fitted with the inner and outer side surfaces of the rail, the outer rail waist top holders and the inner rail waist top holders are respectively against the inner and outer rail waists of the rail, and the rail top plate is fitted with the top surface of the rail to fix the entire device.

[0012] Furthermore, the top rods are all threaded rods.

[0013] Furthermore, there are 2-3 outer rail waist top holders, 2-3 inner rail waist top holders, and 2-3 rail top holders.

[0014] Furthermore, a millimeter-level scale is provided on the plane reading scale plate on the rail top plate, whose main axis is perpendicular to the rail, that is, perpendicular to the direction in which the rail top plate is connected to the two side plates, and its center point is based on the first side plate and is located on the center line of the rail.

[0015] Compared with the prior art, the present invention has the following technical effects:

[0016] The forced observation platform capable of plane fine adjustment and the reference line tensioning device capable of being tightly tightened and locked in the application are installed at both ends of the tool rail on one side of the track slab to be finely adjusted; the track slab plane position fine adjustment amount reading device is installed on the tool rail, the first side plate, the second side plate and the rail top plate are in contact with the outer side, the inner side and the top surface of the tool rail respectively, the rail waist holding members on the two side plates are respectively abutted against the rail waist of the steel rail from the inner side and the outer side, and the steel rail holding member on the second side plate is abutted against the steel rail from the inner side; the reference line string pulled out from the reference line tensioning device installed at both sides of the tool rail passes through the reading cavity formed by the top plate, the rail top plate, the first side plate and the second side plate, and the system is simple in operation, stable in structure, easy to adjust and clear and intuitive. Through the cooperation of the precise lofting by the total station and the fine adjustment system of the forced observation platform, the track center plane position is precisely lofted, then the track center plane position reference line is visualized by replacing the tensioning device, and then the track slab plane position fine adjustment is guided by the track slab plane position fine adjustment amount reading device installed based on the top surface of the tool rail, so that the problems that the station setting precision of the intelligent total station on the long-span cable-stayed bridge main bridge is poor due to the influence of the external environment, the window time meeting the measurement requirements is less, the influence of complex environmental factors such as temperature and load is overcome, the limitation of the CPⅢ control network in the traditional high-speed railway ballastless track construction measurement is broken through, and the construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the forced observation platform capable of plane fine adjustment in the application.

[0018] Figure 2 It is a side view of the forced observation platform capable of plane fine adjustment in the application.

[0019] Figure 3 It is a top view of the forced observation platform capable of plane fine adjustment in the application.

[0020] Figure 4 It is a perspective view of the reference line tensioning device capable of being tightly tightened and locked in the application.

[0021] Figure 5 It is a top view of the reference line tensioning device capable of being tightly tightened and locked in the application.

[0022] Figure 6 It is a bottom view of the reference line tensioning device capable of being tightly tightened and locked in the application.

[0023] Figure 7 It is a perspective view of the track slab plane position fine adjustment amount reading device installed based on the top surface of the tool rail in the application.

[0024] Figure 8 It is a structure diagram of the reading cavity of the track slab plane position fine adjustment amount reading device installed based on the top surface of the tool rail in the application.

[0025] Figure 9 Figure 2 is a side view of the rail plate planar position fine adjustment reading device based on the tool rail top surface installation in the present application.

[0026] Figure 10 Figure 3 is a schematic diagram of the rail waist top holding piece and the steel rail top holding piece of the rail plate planar position fine adjustment reading device based on the tool rail top surface installation in the present application.

[0027] In the figure: 1-fixed base; 2-measuring platform support; 3-measuring platform panel; 4-planar fine adjustment assembly; 5-instrument mounting seat; 6-instrument fixing bolt; 7-wire wheel; 8-mounting rod; 9-outside rod; 10-top plate; 11-rail top plate; 12-first side plate; 13-second side plate; 14-reading cavity; 15-containing cavity; 16-outer rail waist top holding piece; 17-inner rail waist top holding piece; 18-reading microscope; 20-top rod; 21-operating handle; 22-steel rail top holding piece; 23-inner cavity. DETAILED DESCRIPTION

[0028] The present application will be further described below in conjunction with the drawings and specific implementation methods.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0031] The present invention discloses a fine-adjustable marker assembly for measuring and controlling the plane position of a wind-resistant ballastless track slab on a large-span cable-stayed bridge, comprising three structures: a forced observation platform capable of performing plane fine adjustment, a reference line string pulling device capable of being tightened and locked, and a track slab plane position fine-adjustment reading device installed on the top surface of a tool rail.

[0032] Mandatory observation platforms such as Figure 1 As shown, it includes a fixed base 1, a measuring platform support 2, a measuring platform panel 3, a plane fine-tuning component 4 and an instrument mounting base 5. Figure 2 As shown, the measuring platform pillar 2 is connected to the top of the fixed base 1, the measuring platform panel 3 is connected to the top of the measuring platform pillar 2, and the plane fine-tuning component 4 is installed above the measuring platform panel 3. Figure 3 As shown, an instrument mount 5 is located on the top surface of the plane fine-tuning assembly 4, and instrument fixing bolts 6 are attached to the instrument mount 5. The plane fine-tuning assembly 4 allows for fine-tuning and locking of the plane position of the instrument mount 5. The measuring prism and the reference line string-pulling device are mounted on the instrument mount 5. The instrument fixing bolts 6 are the same fixing bolts used on the prism base.

[0033] Furthermore, a plurality of mounting holes are provided on the fixed base 1, and the entire device is fixed to the ground by expansion bolts.

[0034] Baseline string device such as Figure 4 As shown, it includes a locking wheel 7, a mounting rod 8 and a string rod 9. The wheel 7 is located on the side of the mounting rod 8 and is connected to the mounting rod 8. Figure 5 As shown, the chord rod 9 is located above the mounting rod 8 and connected to the mounting rod 8, and is used to control the position of the chord point to ensure that the plane position of the chord point is located at the center of the base and is the same as the center plane position of the prism.

[0035] Further, such as Figure 6 As shown, the mounting rod 8 is provided with an inner cavity 23 which can be locked onto the top rod of the prism support.

[0036] Track plate plane position fine adjustment reading device such as Figure 7 As shown, it includes a top plate 10, a rail top plate 11 parallel to the top plate 10, and a first side plate 12 and a second side plate 13 perpendicular to the top plate 10 and the rail top plate 11. The rail top plate 11 and the first side plate 12 and the second side plate 13 are all located below the top plate 10. Figure 9 As shown, the top plate 10, the rail top plate 11, the first side plate 12, and the second side plate 13 together form a reading cavity 14, and the rail top plate 11, the first side plate 12, and the second side plate 13 together form a receiving cavity 15. The first side plate 12 is provided with a plurality of outer rail waist supporting members 16, and the second side plate 13 is provided with a plurality of inner rail waist supporting members 17 and a plurality of rail supporting members 22. Figure 7 As shown, a reading microscope 18 and a reading cavity lighting device are provided on the top plate 10.Figure 8 As shown, the rail top plate 11 is provided with a planar reading scale plate 19.

[0037] Further, as shown, Figure 10 The outer rail waist top holding member 16, the inner rail waist top holding member 17 and the rail top holding member 22 all include a top rod 20 and an operating handle 21, and the top rod 20 extends into the accommodating cavity 15 at one end different from the operating handle 21. The top rod 20 is a threaded rod. The top rod 20 of the rail top holding member 22 is slightly shorter than the top rod 20 of the rail waist top holding member, and the top rod 20 is screwed into the corresponding side plate. By screwing the operating handle 21, the top rod 20 can be tightened or loosened, which is easy to use.

[0038] Further, as shown, Figure 9 The rail top holding member 22 is attached to the inner and outer sides of the rail, the outer rail waist top holding member 16 and the inner rail waist top holding member 17 are attached to the inner and outer rail waists of the rail, and the rail top plate 11 is attached to the top surface of the rail to fix the overall device. The inner rail waist top holding member 16, the outer rail waist top holding member 17 and the rail top holding member 22 are symmetrically arranged about the center line of the top plate 10. For example, the outer rail waist top holding member 16 is provided with 2-3 members, the inner rail waist top holding member 17 is provided with 2-3 members, and the rail top holding member 22 is provided with 2-3 members.

[0039] Further, the reading microscope 18 has a certain magnification function, which is helpful for reading the planar reading scale plate 19 on the rail top plate 11. Meanwhile, the reading illumination device connected to the inner side of the top plate 10 in the reading cavity 14 can help reading under poor visual conditions at night.

[0040] Further, the planar reading scale plate 19 on the rail top plate is provided with a millimeter scale, the main shaft of which is perpendicular to the rail, i.e. perpendicular to the direction in which the rail top plate 11 is connected to the two side plates. The center point of the main shaft is located on the center line of the rail, with the first side plate 12 as the reference. Under normal circumstances, by reading the transverse deviation amount of the projection of the rail center line plane position indicated by the tension string device on the reading scale plate, the rail plate fine adjustment can be guided. When the transverse deviation amount is zero, the rail plate position is measured and controlled to be in place.

[0041] In an optional embodiment, the first side plate and the second side plate of the rail plate plane position fine adjustment amount reading device based on the tool rail top surface are fixedly connected to the top plate and the rail top plate and cannot be detached. During operation, the device is erected at a certain point of the tool rail. At this time, the rail is in the accommodating cavity. On the basis of ensuring that the rail top plate is tightly attached to the top surface of the rail, the rail top holding member and the inner and outer rail waist top holding members are tightened in sequence to ensure the stability of the device and the clear relative relationship between the device and the rail.

[0042] In the field construction, firstly, the tool rail is installed on the track slab, then the adjustable forced centering observation platform is installed at the approximate tool rail center line position of the track slab to be adjusted, the prism base and the matched prism are installed on the instrument mounting seat and are leveled, then the high-precision total station is used to aim at the prism, the planar fine adjustment assembly is used to accurately loft the track center point according to the design parameters, the fine adjustment system is locked after the lofting is completed, the lofting of all observation platform points is quickly completed in the limited operation window time, then the track slab planar position fine adjustment amount reading device is installed on the tool rail at the position corresponding to the fine adjustment claw of the track slab to be adjusted, the prism on the prism base is replaced by the tension string device, and the pulled string is passed through the reading cavity of the reading device and is tightly locked, at this time, the planar position of the string is the theoretical planar position of the track center line, then the reading device is used to read the transverse relative position offset amount to guide the track slab fine adjustment operation, and when the offset amount is zero, the planar position of the track slab at this position is measured and controlled to be in place.

[0043] The track slab planar fine adjustment method of the present application comprises the following steps:

[0044] 1. A single-sided tool rail is installed on the track slab to be fine adjusted, and adjustable forced observation platforms are arranged at the approximate track center line positions of the tool rail, and corresponding prism bases and matched prisms are installed.

[0045] 2. In the operation window time, the total station is used to freely set a station to aim at the prism, and the planar position of the track center point is lofted according to the design data by cooperating with the planar fine adjustment assembly.

[0046] 3. The track slab planar position fine adjustment amount reading device is installed on the tool rail at the position corresponding to the fine adjustment claw of the track slab to be fine adjusted.

[0047] 4. The prism is replaced by the tension string device, the string is passed through the reading cavity of the reading device, and the wire wheel is tightly locked, so as to establish the reference line.

[0048] 5. The reading magnifying glass on the top plate of the reading device is used to read the transverse offset amount of the track slab, and the workers are guided to adjust the corresponding position by using the fine adjustment claw until the reading is zero, that is, the track slab fine adjustment at this position is completed.

[0049] The present application fine adjusts the planar position of the track slab by relying on the tool rail, the observation platform is installed at the two ends of the tool rail, the reading device is installed on the tool rail, the track design center line is visualized by using the tension string device, and the track slab fine adjustment operation is guided by using the relative planar position relationship, so that the operation is simple, the reaction is intuitive, and the adjustment is easy. The problems that the station setting precision is poor and the operation window is limited due to the influence of the external environment on the intelligent total station on the large-span cable-stayed bridge main bridge are solved, the dependence on the absolute position and stability of the CP III point is broken in the traditional high-speed railway ballastless track construction measurement, and the construction efficiency is improved.

[0050] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall into the protection scope of the present application.

Claims

1. A fine-adjustable marker assembly for measuring and controlling the plane position of a ballastless track slab for wind-resistant long-span cable-stayed bridge, characterized by: It consists of three parts: a forced observation platform capable of fine-tuning the plane, a reference line string pulling device that can be tightened and locked, and a track plate plane position fine-tuning reading device installed on the top surface of the tool rail. The forced observation platform comprises a fixed base (1), a measuring platform pillar (2), a measuring platform panel (3), a plane fine-tuning assembly (4) and an instrument mounting seat (5); the measuring platform pillar (2) is connected to the top of the fixed base (1), the measuring platform panel (3) is connected to the top of the measuring platform pillar (2), the plane fine-tuning assembly (4) is installed on the top of the measuring platform panel (3), an instrument mounting seat (5) is provided on the top surface of the plane fine-tuning assembly (4), and an instrument fixing bolt (6) is provided on the instrument mounting seat (5); the plane fine-tuning assembly (4) realizes the plane position fine-tuning of the instrument mounting seat (5) and locks it; a measuring prism and a reference line string-pulling device are installed on the instrument mounting seat (5); the instrument fixing bolt (6) adopts the fixing bolt used for the prism base; The reference line string pulling device comprises a locking reel (7), a mounting rod (8) and a string-out rod (9); the reel (7) is located on the side of the mounting rod (8) and is connected to the mounting rod (8); the string-out rod (9) is located above the mounting rod (8) and is connected to the mounting rod (8), and is used to control the string-out point position to ensure that the plane position of the string-out point is located at the center of the base and is the same as the center plane position of the prism; The track plate plane position fine adjustment amount reading device comprises a top plate (10), a rail top plate (11) parallel to the top plate (10), and a first side plate (12) and a second side plate (13) perpendicular to the top plate (10) and the rail top plate (11); the rail top plate (11) and the first side plate (12) and the second side plate (13) are all located below the top plate (10), and the top plate (10), the rail top plate (11) and the first side plate (12) and the second side plate (13) together form a reading The rail top plate (11) and the first side plate (12) and the second side plate (13) together form a receiving cavity (15); the first side plate (12) is provided with a plurality of outer rail waist supporting members (16), the second side plate (13) is provided with a plurality of inner rail waist supporting members (17) and a plurality of rail supporting members (22); a reading microscope (18) and a reading cavity lighting device are provided on the top plate (10), and a plane reading graticule (19) is provided on the rail top plate (11).

2. The fine-adjustable marker assembly for measuring and controlling the plane position of the wind-resistant ballastless track slab of a long-span cable-stayed bridge according to claim 1 is characterized by: The fixed base (1) is provided with a plurality of mounting holes, and the device is fixed to the ground as a whole by expansion bolts.

3. The fine-adjustable marker assembly for measuring and controlling the plane position of a wind-resistant ballastless track slab for a long-span cable-stayed bridge according to claim 1 is characterized by: The mounting rod (8) is provided with an inner cavity (23) which can be locked on the top rod of the prism support.

4. The fine-adjustable marker assembly for measuring and controlling the plane position of a wind-resistant ballastless track slab for a long-span cable-stayed bridge according to claim 1 is characterized by: The outer rail waist supporting member (16), the inner rail waist supporting member (17) and the rail supporting member (22) all include a push rod (20) and an operating handle (21), and one end of the push rod (20) different from the operating handle (21) extends into the accommodating cavity (15).

5. The fine-adjustable marker assembly for measuring and controlling the plane position of the wind-resistant ballastless track slab of a long-span cable-stayed bridge according to claim 4 is characterized by: The rail top holder (22) is respectively fitted with the inner and outer side surfaces of the rail, the outer rail waist top holder (16) and the inner rail waist top holder (17) respectively abut against the inner and outer rail waists of the rail, and the rail top plate (11) is fitted with the top surface of the rail to fix the entire device.

6. The fine-adjustable marker assembly for measuring and controlling the plane position of the wind-resistant ballastless track slab of a long-span cable-stayed bridge according to claim 4 is characterized by: The top rods (20) are all threaded rods.

7. The fine-adjustable marker assembly for measuring and controlling the plane position of the wind-resistant ballastless track slab of a long-span cable-stayed bridge according to claim 4 is characterized by: The outer rail waist top holding pieces (16) are provided with 2-3 pieces, the inner rail waist top holding pieces (17) are provided with 2-3 pieces, and the steel rail top holding pieces (22) are provided with 2-3 pieces.

8. The fine-adjustable marker assembly for measuring and controlling the plane position of a wind-resistant ballastless track slab for a long-span cable-stayed bridge according to claim 1 is characterized by: The plane reading scale plate (19) on the rail top plate is provided with millimeter-level scales, the main axis of which is perpendicular to the rail, that is, perpendicular to the direction in which the rail top plate (11) is connected to the two side plates, and the center point thereof is located on the center line of the rail with the first side plate (12) as the reference.

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