Steel arch bridge section suspended splicing positioning device and positioning system

Abstract

The utility model relates to a steel arch bridge section suspended splicing positioning device which comprises two horizontal adjusting mechanisms, each horizontal adjusting mechanism comprises an inclined bottom plate, the inclined bottom plates are used for being obliquely fixed to a steel arch bridge section, and a levelness coarse adjusting mechanism and a levelness fine adjusting mechanism are installed on the inclined bottom plates; the levelness coarse adjusting mechanism is connected with the levelness fine adjusting mechanisms, one levelness fine adjusting mechanism is fixedly provided with a laser range finder, and the other levelness fine adjusting mechanism is fixedly provided with a laser receiving curtain. A laser range finder is mounted on an erected steel arch bridge section, and a laser receiving curtain is mounted on a to-be-erected steel arch bridge section, so that the laser range finder and the laser receiving curtain can be used in an inclined steel arch bridge section, and a constructor can quickly measure and position the steel arch bridge section in a suspended splicing measurement process conveniently; the technical problems of tedious steps and low efficiency of steel arch bridge section suspended splicing measurement by using a total station in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction measurement, in particular to a steel arch bridge segment suspension positioning device and positioning system. BACKGROUND

[0002] At present, the steel arch bridge segment suspension hoisting construction belongs to high-altitude construction, the distance between the steel arch bridge segment and the two banks of the arch bridge is far during the construction process, the steel arch bridge segment suspension positioning is difficult, and the construction precision cannot be guaranteed.

[0003] In the related art, the steel arch bridge segment suspension measurement mainly uses a total station, an appropriate environment needs to be selected before observation, measurement operation cannot be immediately performed, remote measurement is not easy due to the limitation of the visibility condition, the station setting process is relatively complex, multiple persons need to be coordinated and reviewed, the measurement steps using the total station are tedious, the efficiency is low, and the requirement for the environment is high.

[0004] Therefore, it is necessary to design a new steel arch bridge segment suspension positioning device to overcome the above problems. CONTENT OF THE INVENTION

[0005] The present application provides a steel arch bridge segment suspension positioning device and positioning system, which can solve the technical problems of tedious measurement steps, low efficiency and high requirement for the environment in the related art.

[0006] In a first aspect, the present application provides a steel arch bridge segment suspension positioning device, which comprises two horizontal adjustment mechanisms, one of which is used to be fixed to the erected steel arch bridge segment, and the other of which is used to be fixed to the steel arch bridge segment to be erected, each horizontal adjustment mechanism comprises an inclined bottom plate, the inclined bottom plate is used to be fixed to the steel arch bridge segment, the inclined bottom plate is provided with a horizontal degree coarse adjustment mechanism and a horizontal degree fine adjustment mechanism, the horizontal degree coarse adjustment mechanism and the horizontal degree fine adjustment mechanism are connected, one horizontal degree fine adjustment mechanism is provided with a laser range finder, and the other horizontal degree fine adjustment mechanism is provided with a laser receiving curtain, the position of the laser receiving curtain corresponds to the position of the laser range finder.

[0007] In combination with the first aspect, in an implementation mode, the horizontal degree coarse adjustment mechanism comprises a first adjusting bolt and a lower supporting plate, one end of the first adjusting bolt is fixed to the inclined bottom plate, the other end of the first adjusting bolt is inserted into the lower supporting plate, the first adjusting bolt is sleeved with a first nut, and the lower supporting plate is provided with the horizontal degree fine adjustment mechanism.

[0008] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the horizontal degree fine adjustment mechanism comprises a plurality of second adjustment bolts and an upper support plate, one end of each of the second adjustment bolts is fixed to the lower support plate, the other end of each of the second adjustment bolts is inserted into the upper support plate, a second nut is sleeved on each of the second adjustment bolts, and the upper support plate is fixed to the laser range finder.

[0009] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the upper support plate, the lower support plate and the laser range finder are all provided with a water level bubble.

[0010] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the upper support plate is provided with a plumb bob, and the plumb bob abuts against an end surface of the inclined bottom plate.

[0011] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the lower support plate is provided, at an end away from the first adjustment bolt, with a rotating shaft, and the rotating shaft is hinged to the inclined bottom plate.

[0012] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the inclined bottom plate is fixedly provided with a strong magnet, the strong magnet is installed on a side of the inclined bottom plate close to the horizontal degree coarse adjustment mechanism, and the strong magnet is used for being magnetically attracted to a steel arch bridge segment.

[0013] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the laser range finder is fixed to one of the horizontal degree fine adjustment mechanisms through a connecting screw.

[0014] In combination with the first aspect, in an implementation form of the horizontal degree fine adjustment mechanism, the laser receiving curtain is fixed to the other horizontal degree fine adjustment mechanism through a connecting screw rod.

[0015] The second aspect provides a steel arch bridge segment suspension positioning system, which comprises a built steel arch bridge segment, a to-be-built steel arch bridge segment and two horizontal adjustment mechanisms, one of the horizontal adjustment mechanisms is fixed to the built steel arch bridge segment, and the other horizontal adjustment mechanism is fixed to the to-be-built steel arch bridge segment; each of the horizontal adjustment mechanisms comprises an inclined bottom plate, the inclined bottom plate is fixedly inclined to the steel arch bridge segment, the inclined bottom plate is provided with a horizontal degree coarse adjustment mechanism and a horizontal degree fine adjustment mechanism, the horizontal degree coarse adjustment mechanism and the horizontal degree fine adjustment mechanism are connected, one of the horizontal degree fine adjustment mechanisms is fixedly provided with a laser range finder, the other horizontal degree fine adjustment mechanism is fixedly provided with a laser receiving curtain, and the position of the laser receiving curtain corresponds to the position of the laser range finder.

[0016] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0017] By using a horizontal adjustment mechanism to install a laser range finder on the erected steel arch bridge section, and using another horizontal adjustment mechanism to install a laser receiving curtain on the steel arch bridge section to be erected, the inclined bottom plate of the horizontal adjustment mechanism is fixedly inclined with the steel arch bridge section, so that the laser range finder and the laser receiving curtain can be used on the inclined steel arch bridge section, facilitating the construction personnel to quickly measure and position during the steel arch bridge section suspension measurement process, and solving the technical problems of complicated steps, low efficiency and high requirements for the environment in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 A structural schematic diagram of a steel arch bridge section suspension positioning device provided by the embodiments of the present application is shown in the figure.

[0020] Figure 2 A structural schematic diagram of a laser range finder installed on a horizontal adjustment mechanism provided by the embodiments of the present application is shown in the figure.

[0021] Figure 3 A structural schematic diagram of a laser receiving curtain installed on a horizontal adjustment mechanism provided by the embodiments of the present application is shown in the figure.

[0022] In the figure: 1, horizontal adjustment mechanism; 11, inclined bottom plate; 12, horizontal degree coarse adjustment mechanism; 121, first adjusting bolt; 122, lower bearing plate; 123, first nut; 13, horizontal degree fine adjustment mechanism; 131, second adjusting bolt; 132, upper bearing plate; 133, second nut; 14, pipe level bubble; 15, plumb bob; 16, rotating shaft; 17, strong magnet; 2, laser range finder; 3, laser receiving curtain; 4, connecting screw; 5, connecting screw rod. DETAILED DESCRIPTION

[0023] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] The embodiment of the present application provides a steel arch bridge segment suspension positioning device and a positioning system, which can solve the technical problems of complicated steel arch bridge segment suspension measurement steps, low efficiency and high requirement for environment by using a total station.

[0025] Referring to Figure 1 and Figure 2 The embodiment of the present application provides a steel arch bridge segment suspension positioning device, which comprises two horizontal adjustment mechanisms 1, one of which is used for fixing to a steel arch bridge segment that has been erected, and the other of which is used for fixing to a steel arch bridge segment that is to be erected, each horizontal adjustment mechanism 1 comprises an inclined bottom plate 11, the inclined bottom plate 11 is used for being fixed to a steel arch bridge segment in an inclined manner, the inclined bottom plate 11 is provided with a horizontal degree coarse adjustment mechanism 12 and a horizontal degree fine adjustment mechanism 13, the horizontal degree coarse adjustment mechanism 12 and the horizontal degree fine adjustment mechanism 13 are connected, one horizontal degree fine adjustment mechanism 13 is fixedly provided with a laser range finder 2, and the other horizontal degree fine adjustment mechanism 13 is fixedly provided with a laser receiving curtain 3, the position of the laser receiving curtain 3 corresponds to the position of the laser range finder 2.

[0026] In the embodiment, the horizontal adjustment mechanism 1 can adjust the horizontal degree of the laser range finder 2 or the laser receiving curtain 3, the horizontal degree coarse adjustment mechanism 12 can coarsely adjust the horizontal degree of the laser range finder 2 or the laser receiving curtain 3, the horizontal degree fine adjustment mechanism 13 can finely adjust the horizontal degree of the laser range finder 2 or the laser receiving curtain 3, the inclined bottom plate 11 is used for being fixed to a steel arch bridge segment in an inclined manner, so that the laser range finder 2 and the laser receiving curtain 3 can be fixed to the steel arch bridge segment in a parallel ground direction and are not affected by the inclination of the steel arch bridge segment, the steel arch bridge segment that is to be erected is adjusted to a design position according to different positions of laser falling on the laser receiving curtain 3, the steel arch bridge segment suspension positioning device is simple in installation and operation, high in practicability, can realize rapid measurement and positioning, high in measurement accuracy, and small in influence of environment.

[0027] In the embodiment, one horizontal adjustment mechanism 1 is used for installing the laser range finder 2 on the steel arch bridge segment that has been erected, and the other horizontal adjustment mechanism 1 is used for installing the laser receiving curtain 3 on the steel arch bridge segment that is to be erected, the inclined bottom plate 11 of the horizontal adjustment mechanism 1 is fixed to the steel arch bridge segment in an inclined manner, so that the laser range finder 2 and the laser receiving curtain 3 can be used on the inclined steel arch bridge segment, construction personnel can rapidly measure and position in the process of steel arch bridge segment suspension measurement, and the technical problems of complicated steel arch bridge segment suspension measurement steps, low efficiency and high requirement for environment by using a total station in the related art are solved.

[0028] Further, referring to Figure 2As shown, in some embodiments, the horizontal rough adjustment mechanism 12 comprises a first adjusting bolt 121 and a lower supporting plate 122, one end of the first adjusting bolt 121 is fixed with the inclined bottom plate 11, the other end of the first adjusting bolt 121 is inserted with the lower supporting plate 122, the first adjusting bolt 121 is sleeved with a first nut 123, and the lower supporting plate 122 is installed with the horizontal fine adjustment mechanism 13.

[0029] In this embodiment, by rotating the first nut 123, the height of the lower supporting plate 122 of the first adjusting bolt 121 is adjusted, so that the horizontal rough adjustment mechanism 12 is adjusted, and the horizontal rough adjustment mechanism is preliminarily adjusted. In other embodiments, one end of the first adjusting bolt 121 is fixed with the inclined bottom plate 11, the other end of the first adjusting bolt 121 is abutted with the lower supporting plate 122, and the first adjusting bolt 121 is sleeved with the first nut 123.

[0030] Further, referring to Figure 2 As shown, in some embodiments, the horizontal fine adjustment mechanism 13 comprises a plurality of second adjusting bolts 131 and an upper supporting plate 132, one end of each of the second adjusting bolts 131 is fixed with the lower supporting plate 122, the other end of each of the second adjusting bolts 131 is inserted with the upper supporting plate 132, each of the second adjusting bolts 131 is sleeved with a second nut 133, and the upper supporting plate 132 is fixed with the laser range finder 2.

[0031] In this embodiment, by rotating a plurality of the second nuts 133, the height of each part of the upper supporting plate 132 is adjusted, so that the horizontal fine adjustment mechanism 13 is adjusted, and the horizontal fine adjustment mechanism is further adjusted. In other embodiments, one end of each of the second adjusting bolts 131 is fixed with the lower supporting plate 122, the other end of each of the second adjusting bolts 131 is abutted with the upper supporting plate 132, and each of the second adjusting bolts 131 is sleeved with the second nut 133.

[0032] Further, referring to Figure 2 As shown, in some embodiments, the upper supporting plate 132, the lower supporting plate 122 and the laser range finder 2 are all provided with a water level bubble 14.

[0033] In the embodiment, the levelness of the lower supporting plate 122 can be determined by observing the state of the tube level bubble 14 located on the lower supporting plate 122, so as to ensure the levelness of the levelness coarse adjustment mechanism 12, the levelness of the upper supporting plate 132 can be determined by observing the state of the tube level bubble 14 located on the upper supporting plate 132, so as to ensure the levelness of the levelness fine adjustment mechanism 13, when the levelness of the levelness coarse adjustment mechanism 12 and the levelness fine adjustment mechanism 13 meets the requirements, the levelness of the laser range finder 2 can be determined by observing the state of the tube level bubble 14 located on the laser range finder 2, and corresponding adjustment can be performed.

[0034] Further, referring to Figure 2 In some embodiments, the upper supporting plate 132 is bolted with a line hammer 15, and the line hammer 15 abuts against the end surface of the inclined bottom plate 11.

[0035] In the embodiment, one end of the line hammer 15 is bolted with the upper supporting plate 132, and the other end of the line hammer 15 abuts against the end surface of the inclined bottom plate 11, and the line hammer 15 is provided with a scale, by which the marked height of the upper supporting plate 132 to the measuring point can be measured, and the elevation of the laser range finder 2 can be obtained.

[0036] Further, referring to Figure 2 In some embodiments, the lower supporting plate 122 is provided with a rotating shaft 16 away from one end of the first adjusting bolt 121, and the rotating shaft 16 is hinged with the inclined bottom plate 11.

[0037] In the embodiment, the lower supporting plate 122 is hinged with the inclined bottom plate 11 through the rotating shaft 16, so that the lower supporting plate 122 can rotate around the rotating shaft 16, and the levelness coarse adjustment mechanism 12 can adjust the levelness through the first nut 123.

[0038] Further, referring to Figure 2 In some embodiments, the inclined bottom plate 11 is fixedly provided with a strong magnet 17, and the strong magnet 17 is installed on the side of the inclined bottom plate 11 close to the levelness coarse adjustment mechanism 12, and the strong magnet 17 is used for magnetic attraction to the steel arch bridge segment.

[0039] In the embodiment, the inclined bottom plate 11 can be made of metal material, the strong magnet 17 is bolted with the inclined bottom plate 11, and the strong magnet 17 is installed on the side of the inclined bottom plate 11 close to the levelness coarse adjustment mechanism 12, so that the inclined bottom plate 11 can be used for magnetic attraction to the steel arch bridge segment through the strong magnet 17, and the laser range finder 2 and the laser receiving curtain 3 can be quickly installed on the steel arch bridge segment without being affected by the inclination of the steel arch bridge segment.

[0040] Further, referring to Figure 1 and Figure 2 In some embodiments, the laser range finder 2 is fixed to one of the horizontal fine adjustment mechanisms 13 by a connecting screw 4.

[0041] In this embodiment, the connecting screw 4 connects the laser range finder 2 and one of the horizontal fine adjustment mechanisms 13, so that the laser range finder 2 and one of the horizontal adjustment mechanisms 1 are fixed, facilitating assembly and disassembly.

[0042] Further, referring to Figure 1 and Figure 3 In some embodiments, the laser receiving curtain 3 is fixed to another of the horizontal fine adjustment mechanisms 13 by a connecting screw 5.

[0043] In this embodiment, the connecting screw 5 connects the laser receiving curtain 3 and another of the horizontal fine adjustment mechanisms 13, so that the laser receiving curtain 3 and another of the horizontal adjustment mechanisms 1 are fixed, facilitating assembly and disassembly.

[0044] Referring to Figures 1-3 The embodiments of the present application provide a steel arch bridge segment suspension positioning system, which comprises a built steel arch bridge segment, a to-be-built steel arch bridge segment and two horizontal adjustment mechanisms 1, one of the horizontal adjustment mechanisms 1 is fixed to the built steel arch bridge segment, and the other of the horizontal adjustment mechanisms 1 is fixed to the to-be-built steel arch bridge segment; each of the horizontal adjustment mechanisms 1 comprises an inclined bottom plate 11, the inclined bottom plate 11 is fixedly inclined to the steel arch bridge segment, the inclined bottom plate 11 is provided with a horizontal coarse adjustment mechanism 12 and a horizontal fine adjustment mechanism 13, the horizontal coarse adjustment mechanism 12 and the horizontal fine adjustment mechanism 13 are connected, one of the horizontal fine adjustment mechanisms 13 is fixedly provided with a laser range finder 2, the other of the horizontal fine adjustment mechanisms 13 is fixedly provided with a laser receiving curtain 3, and the position of the laser receiving curtain 3 corresponds to the position of the laser range finder 2.

[0045] In the embodiment, the erected steel arch bridge segments and the to-be-erected steel arch bridge segments are arranged in parallel at a set distance, the position of the laser receiving curtain 3 corresponds to the position of the laser range finder 2, the horizontal adjustment mechanism 1 can adjust the horizontality of the laser range finder 2 and the laser receiving curtain 3, the horizontal degree coarse adjustment mechanism 12 can coarsely adjust the horizontality of the laser range finder 2 or the laser receiving curtain 3, the horizontal degree fine adjustment mechanism 13 can finely adjust the horizontality of the laser range finder 2 or the laser receiving curtain 3, the inclined bottom plate 11 is fixedly connected with the steel arch bridge segment in an inclined manner, so that the laser range finder 2 and the laser receiving curtain 3 can be fixed to the steel arch bridge segment in a parallel ground direction and are not affected by the inclination of the steel arch bridge segment, the to-be-erected steel arch bridge segment is adjusted to the design position according to the different positions of the laser on the laser receiving curtain 3, the steel arch bridge segment suspension positioning system is simple in installation and operation, high in practicability, can realize rapid measurement and positioning, high in measurement accuracy, and small in environmental influence.

[0046] Before the steel arch bridge segment is erected, the measurement point marks are made on both sides of the end of the steel arch bridge segment, the measurement point marks are used as the base points for adjusting the to-be-erected steel arch bridge segment, after the installation of the steel arch bridge segment is completed, the erected steel arch bridge segment is adjusted by using the total station, and the elevation is transmitted to the measurement point marks; then the laser range finder 2 is installed on the erected steel arch bridge segment, the first nut 123 is rotated to keep the pipe level bubble 14 located on the lower bearing plate 122 horizontal, a plurality of the second nuts 133 are rotated to keep the pipe level bubble 14 located on the upper bearing plate 132 horizontal, one horizontal adjustment mechanism 1 is kept horizontal, the pipe level bubble 14 located on the laser range finder 2 is observed, and the laser range finder 2 is adjusted to keep it horizontal, the height of the upper bearing plate 132 to the measurement point mark is measured by the plumb bob 15, and the elevation of the laser range finder 2 is obtained; then the laser receiving curtain 3 is installed on the to-be-erected steel arch bridge segment, the first nut 123 is rotated to keep the pipe level bubble 14 located on the lower bearing plate 122 horizontal, a plurality of the second nuts 133 are rotated to keep the pipe level bubble 14 located on the upper bearing plate 132 horizontal, the other horizontal adjustment mechanism 1 is kept horizontal, the height of the upper bearing plate 132 to the measurement point mark is measured by the plumb bob 15, and the elevation of the laser receiving curtain 3 is obtained; the to-be-erected steel arch bridge segment is adjusted left and right in the transverse direction of the bridge by the different positions of the laser on the laser receiving curtain 3, the original point elevation of the laser receiving curtain 3 is calculated by the elevation of the laser on the laser receiving curtain 3, and the measurement point adjustment elevation of the to-be-erected steel arch bridge segment is obtained, the to-be-erected steel arch bridge segment is adjusted up and down, the above steps are repeated, and the to-be-erected steel arch bridge segment meets the design requirements.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used for indicating 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. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0049] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A steel arch bridge segment cantilever positioning device, characterized in that, It includes: Two horizontal adjustment mechanisms (1), one of which is used to fix the erected steel arch bridge section, and the other is used to fix the steel arch bridge section to be erected; Each horizontal adjustment mechanism (1) includes an inclined bottom plate (11) for fixing the steel arch bridge section, and a horizontal rough adjustment mechanism (12) and a horizontal fine adjustment mechanism (13) are installed on the inclined bottom plate (11), the horizontal rough adjustment mechanism (12) and the horizontal fine adjustment mechanism (13) are connected, one of the horizontal fine adjustment mechanism (13) is provided with a laser range finder (2), and the other is provided with a laser receiving curtain (3), the position of the laser receiving curtain (3) corresponds to the position of the laser range finder (2).

2. The steel arch bridge segment span positioning apparatus of claim 1, wherein, The horizontal rough adjustment mechanism (12) includes a first adjusting bolt (121) and a lower support plate (122), one end of the first adjusting bolt (121) is fixed with the inclined bottom plate (11), the other end of the first adjusting bolt (121) is inserted with the lower support plate (122), the first adjusting bolt (121) is sleeved with a first nut (123), and the lower support plate (122) is installed with the horizontal fine adjustment mechanism (13).

3. The steel arch bridge segment span positioning apparatus of claim 2, wherein, The horizontal fine adjustment mechanism (13) includes a plurality of second adjusting bolts (131) and an upper support plate (132), one end of each second adjusting bolt (131) is fixed with the lower support plate (122), the other end of each second adjusting bolt (131) is inserted with the upper support plate (132), each second adjusting bolt (131) is sleeved with a second nut (133), and the upper support plate (132) is fixed with the laser range finder (2).

4. The steel arch bridge segment span positioning apparatus of claim 3, wherein, The upper support plate (132), the lower support plate (122) and the laser range finder (2) are all provided with a water level bubble (14).

5. The steel arch bridge segment span positioning apparatus of claim 3, wherein, The upper support plate (132) is bolted with a line hammer (15), and the line hammer (15) abuts against the end surface of the inclined bottom plate (11).

6. The steel arch bridge segment span positioning apparatus of claim 3, wherein, The lower support plate (122) is provided with a rotating shaft (16) away from one end of the first adjusting bolt (121), and the rotating shaft (16) is hinged with the inclined bottom plate (11).

7. The steel arch bridge segment span positioning apparatus of claim 1 wherein, The inclined bottom plate (11) is fixed with a strong magnet (17), the strong magnet (17) is installed on the side of the inclined bottom plate (11) close to the horizontal rough adjustment mechanism (12), and the strong magnet (17) is used for magnetic attraction on the steel arch bridge section.

8. The steel arch bridge segment span positioning apparatus of claim 1 wherein, The laser range finder (2) is fixed with one of the horizontal fine adjustment mechanisms (13) through a connecting screw (4).

9. The steel arch bridge segment span positioning apparatus of claim 1 wherein, The laser receiving curtain (3) is fixed with the other horizontal fine adjustment mechanism (13) through a connecting screw rod (5).

10. A steel arch bridge segment cantilever positioning system, characterized in that, It includes: The erected steel arch bridge section and the steel arch bridge section to be erected; Two horizontal adjustment mechanisms (1), one of which is fixed on the erected steel arch bridge section, and the other is fixed on the steel arch bridge section to be erected; Each horizontal adjustment mechanism (1) comprises an inclined bottom plate (11) fixedly inclined on a steel arch bridge segment, a horizontal degree coarse adjustment mechanism (12) and a horizontal degree fine adjustment mechanism (13) are installed on the inclined bottom plate (11), the horizontal degree coarse adjustment mechanism (12) and the horizontal degree fine adjustment mechanism (13) are connected, one horizontal degree fine adjustment mechanism (13) is fixedly provided with a laser range finder (2), and the other horizontal degree fine adjustment mechanism (13) is fixedly provided with a laser receiving curtain (3), and the position of the laser receiving curtain (3) corresponds to the position of the laser range finder (2).

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