Device and method for measuring inclination angle of bridge cable guide pipe

Abstract

The invention relates to the technical field of bridge engineering, in particular to a device and method for measuring the inclination angle of a bridge inhaul cable guide pipe, the device comprises a vertex positioner and an inclinometer, the vertex positioner is arranged at a pipe opening of the bridge inhaul cable guide pipe and used for positioning the upper vertex position of the pipe opening of the bridge inhaul cable guide pipe; the inclinometer is arranged above the bridge cable guide pipe and is used for measuring the inclination angle of the bridge cable guide pipe; the vertex positioner comprises a graduated scale, a centering device, a wire box and a water level, a zero graduation line is arranged in the middle of the graduated scale, and symmetrical scale readings are arranged on the left side and the right side of the zero graduation line; the centering device is arranged on the graduated scale and is positioned below the zero graduation line; the wire box is arranged below the centering device; and the water level is arranged on the graduated scale and used for keeping the graduation level of the graduated scale. The device can quickly position the pipe orifice positioning position of the bridge cable guide pipe, so that the quick measurement of the inclination angle of the bridge cable guide pipe is realized.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, specifically to a device and method for measuring the inclination angle of bridge cable guide tubes. Background Technology

[0002] In bridge engineering, the installation angle of the bridge cable duct is an important parameter in the construction process. Therefore, it is necessary to measure the inclination angle of the bridge cable duct. The bridge cable duct is a circular tubular structure. Currently, the main method for accurately measuring the inclination angle of this circular tubular structure on site is to use a total station to measure the three-dimensional coordinates of the highest vertical points of the cross-sections at both ends of the cable duct, and then calculate the inclination angle of the cable duct.

[0003] The disadvantages of existing methods include: (1) Before the formal measurement, it is necessary to use a total station to repeatedly measure the elevation of the cross sections at both ends of the cable guide to find the highest point of the cross sections at both ends of the cable guide. However, due to the limited number of measurements, it is difficult to find the actual highest point of the cross sections at both ends of the cable guide. It can only be theoretically as close as possible to the actual position.

[0004] (2) When using a total station to measure the coordinates of the cable guide tube, the measurement results are easily affected by factors such as the measurement environment, instruments and equipment, and measurement personnel, and the accuracy of the measurement results is difficult to guarantee.

[0005] (3) The measurement process is cumbersome, involves a large workload, and has many uncontrollable factors.

[0006] In summary, there is an urgent need for a device and method for measuring the inclination angle of bridge cable guide tubes to solve the problems existing in the prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a device and method for measuring the inclination angle of bridge cable guide tubes, and the specific technical solution is as follows: A device for measuring the inclination angle of a bridge cable duct includes a vertex locator and an inclinometer. The vertex locator is disposed at the opening of the bridge cable duct and is used to locate the upper vertex position of the opening of the bridge cable duct. The inclinometer is disposed above the bridge cable duct and is used to measure the inclination angle of the bridge cable duct. The vertex locator includes a ruler, a centering device, a wire box, and a level. The ruler has a zero mark at its center and symmetrical scale readings on both sides of the zero mark. The centering device is located on the ruler and below the zero mark. The wire box is located below the centering device. The level is located on the ruler to keep the scale horizontal.

[0008] Optionally, the centering device comprises two adjacent cylinders, with the gap between the two cylinders aligned with the zero mark of the scale.

[0009] Optionally, the wire box includes a box body, a positioning line, and a wire outlet disposed on the box body. The positioning line is disposed inside the box body and passes through the wire outlet. The wire outlet, the centering device, and the zero scale line are arranged in a colinear manner.

[0010] In addition, the present invention also includes a method for measuring the inclination angle of a bridge cable duct, using the bridge cable duct inclination angle measuring device as described above, the method comprising the following steps: Place the vertex locator close to the opening of the bridge cable conduit; Use a level to adjust the vertex locator to a horizontal position, at which point the scale reading on the vertex locator is set horizontally. The scale readings on the vertex locator are used to make the readings on the left and right sides exactly the same; Pull the line from the junction box so that the positioning line in the junction box passes through the centering device and the zero mark, and pull the positioning line to the opening of the bridge cable guide tube. Mark the intersection of the positioning line and the opening as the apex of the opening. Mark the two apex points of the bridge cable duct using the above method, and denote them as points A and B; Align the test axis of the inclinometer with the line connecting points A and B, set up the inclinometer, and use the inclinometer to measure the inclination angle of the bridge cable duct.

[0011] The application of the technical solution of the present invention has the following beneficial effects: This invention provides a device and method for measuring the inclination angle of a bridge cable duct. The device is designed with a vertex locator that can quickly locate the vertex of the bridge cable duct opening. By using the vertex locator to quickly locate the opening of the bridge cable duct, and in conjunction with an inclinometer, the inclination angle of the bridge cable duct can be measured. This invention enables rapid measurement of the inclination angle of a bridge cable duct, and has a simple structure and is easy to operate.

[0012] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the vertex locator in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the vertex locator in a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the installation of the inclinometer in a preferred embodiment of the present invention.

[0014] Among them, 1-ruler, 2-centering device, 3-line box, 4-level. Detailed Implementation

[0015] The core of this invention is to provide a device and method for measuring the inclination angle of a bridge cable duct. In existing technologies, the main method for accurately measuring the inclination angle of a bridge cable duct on-site involves using a total station to measure the three-dimensional coordinates of the highest vertical points at both ends of the cable duct's cross-section, obtaining the three-dimensional coordinates A(x1, y1, z1) and B(x2, y2, z2) of points A and B of the cable duct, respectively, and then calculating the inclination angle of the bridge cable duct. α The calculation expression is: It should be noted that existing technology requires repeatedly measuring the elevation of the cross-sections at both ends of the bridge cable duct using a total station to locate the highest point of the cross-sections. Limited by the number of measurements, it is difficult to find the actual location of the highest point of the cross-sections at both ends of the cable duct; only a theoretical approximation is possible. This method is cumbersome and struggles to pinpoint the vertical highest point of the bridge cable duct, resulting in low measurement accuracy and inefficient tilt angle measurement.

[0016] The present invention provides a device and method for measuring the inclination angle of a bridge cable duct, comprising a vertex locator and an inclinometer. The vertex locator is positioned at the opening of the bridge cable duct to locate the upper vertex position of the opening. The inclinometer is positioned above the bridge cable duct to measure its inclination angle. This invention allows for rapid positioning of the vertex of the bridge cable duct opening using the vertex locator, thereby enabling the measurement of the inclination angle of the bridge cable duct in conjunction with the inclinometer.

[0017] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: See Figure 1 This embodiment provides a bridge cable duct inclination angle measuring device, including a vertex locator and an inclinometer. The vertex locator is set at the opening of the bridge cable duct and is used to locate the upper vertex position of the opening of the bridge cable duct. The inclinometer is set above the bridge cable duct and is used to measure the inclination angle of the bridge cable duct. The vertex locator includes a scale 1, a centering device 2, a wire box 3, and a level 4. The scale 1 has a zero mark at its center, and symmetrical scale readings are provided on the left and right sides of the zero mark. The centering device 2 is set on the scale and located below the zero mark. The wire box 3 is set below the centering device 2. The level 4 is set on the scale 1 to keep the scale of the scale 1 horizontal.

[0019] It should be noted that in this embodiment, the zero mark, centering device 2 and wire box 3 are arranged in a collinear manner. The positioning line coming out of the wire box 3 can pass through the centering device 2 and the zero mark. At this time, the positioning line is in a vertical state and perpendicular to the scale reading of the scale 1.

[0020] Furthermore, the centering device 2 comprises two adjacent cylinders, with the gap between the two cylinders aligned with the zero mark of the scale 1. The gap between the cylinders facilitates the passage of the positioning line. After the positioning line pulled from the cable box 3 passes through the gap between the cylinders, the positioning line located between the cable box 3 and the centering device 2 remains vertical, which is beneficial for completing the positioning of the apex of the bridge cable guide tube.

[0021] Furthermore, the wire box 3 includes a box body, a positioning line, and a wire outlet disposed on the box body. The positioning line is disposed inside the box body and passes through the wire outlet. The wire outlet, the centering device 2, and the zero scale line are arranged in a colinear manner.

[0022] This embodiment provides a device for measuring the inclination angle of a bridge cable duct. The device includes a vertex locator that can quickly locate the vertex of the bridge cable duct opening. The vertex locator is used to quickly locate the opening of the bridge cable duct, and in conjunction with an inclinometer, the inclination angle of the bridge cable duct is measured. This embodiment of the device can realize the rapid measurement of the inclination angle of the bridge cable duct, and has a simple structure and is easy to operate.

[0023] In addition, this embodiment also includes a method for measuring the inclination angle of a bridge cable duct, using the bridge cable duct inclination angle measuring device as described above. The steps of the method include: Place the vertex locator close to the opening of the bridge cable conduit; Use level 4 to adjust the vertex locator to a horizontal state, at which point the scale reading on the vertex locator is set horizontally. The scale readings on the vertex locator are used to make the readings on the left and right sides exactly the same; Pull a line from junction box 3 so that the positioning line in junction box 3 passes through centering device 2 and zero mark line, and pull the positioning line to the opening of the bridge cable guide tube. Mark the intersection of the positioning line and the opening as the apex of the opening. like Figure 2 As shown, the two apexes of the bridge cable duct are marked in the above manner and denoted as points A and B. Align the test axis of the inclinometer with the line connecting points A and B, set up the inclinometer, and use the inclinometer to measure the inclination angle of the bridge cable duct.

[0024] In this embodiment, the inclinometer position is set as follows: Figure 3 As shown, the inclinometer is positioned directly above the duct axis, and its test axis coincides with the axis of the line connecting points A and B. Using the bridge cable duct inclination measurement method provided in this embodiment, the inclinometer accurately locates the duct axis, thereby accurately measuring the inclination angle of the bridge cable duct. In this embodiment, after the inclinometer is positioned, the inclination angle is measured using a conventional method, which will not be described in detail here.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A bridge cable conduit inclination measuring device, characterized by, The bridge cable conduit inclination measuring device comprises a vertex positioner and an inclination instrument, the vertex positioner is arranged at the pipe orifice of the bridge cable conduit for positioning the upper vertex position of the pipe orifice of the bridge cable conduit, and the inclination instrument is arranged above the bridge cable conduit for measuring the inclination angle of the bridge cable conduit. The vertex positioner comprises a scale (1), a centralizer (2), a line box (3) and a level (4), the middle position of the scale (1) is provided with a zero scale line, and symmetrical scale readings are arranged on the left and right sides of the zero scale line; the centralizer (2) is arranged on the scale below the zero scale line; the line box (3) is arranged below the centralizer (2); and the level (4) is arranged on the scale (1) for keeping the scale of the scale (1) horizontal.

2. The bridge cable conduit inclination measuring device according to claim 1, characterized in that The centralizer (2) comprises two adjacent cylinders, and the gap between the two cylinders is aligned with the zero scale line of the scale (1).

3. A bridge cable conduit inclination measuring device according to claim 2, characterized in that The line box (3) comprises a box body, a positioning line and a line outlet arranged on the box body, the positioning line is arranged in the box body and passes through the line outlet, and the line outlet, the centralizer (2) and the zero scale line are arranged in a straight line.

4. A method of measuring the inclination of a bridge cable conduit, characterized by, The method comprises the following steps: The vertex positioner is arranged close to the pipe orifice of the bridge cable conduit; The vertex positioner is adjusted to be horizontal by the level (4), and at this time, the scale readings on the vertex positioner are arranged horizontally; The scale readings on the vertex positioner are used to make the readings on the left and right sides completely the same; The positioning line in the line box (3) is pulled out and passes through the centralizer (2) and the zero scale line, and the positioning line is pulled to the pipe orifice position of the bridge cable conduit, and the intersection of the positioning line and the pipe orifice is marked as the pipe orifice vertex; The two pipe orifice vertices of the bridge cable conduit are marked in the above manner, and are marked as points A and B; The test axis of the inclination instrument is aligned with the line connecting points A and B, and the inclination instrument is arranged to measure the inclination angle of the bridge cable conduit.

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