A cable-stayed bridge tower cableway pipe positioning measurement device and measurement method

Abstract

The present invention discloses a cable-stayed bridge tower cableway tube positioning and measurement device and method, which relates to the field of cableway tube positioning and measurement. The device comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate being clamped oppositely on the outer wall of the cableway tube. The device also comprises a first prism, the first prism being located in the plane where the center point of the cableway tube outlet is located and being installed on an adjustment mechanism that is telescopic along the diameter of the cableway tube. The device also comprises a second prism, the second prism being located outside the cableway tube, the projection of the second prism toward the ground being located within the projection of the cableway tube axis toward the ground. The present invention utilizes an adjustment mechanism for the prism position to respectively place the two prisms at the center point of the cableway tube outlet and at a measurement point outside the cableway tube, thereby reducing the number of prisms installed on the outer wall of the cableway tube. At the same time, the coordinate positions of the prisms can be more quickly and accurately located, facilitating subsequent measurement and correction of the cableway tube position.

Description

Technical Field

[0001] The invention relates to the field of cableway tube positioning measurement, and in particular to a cableway tube positioning measurement device and a measurement method for a cable-stayed bridge tower column. Background Art

[0002] During the construction of long-span cable-stayed bridges, the positioning of the cableway tubes is a highly demanding and demanding measurement task, significantly impacting the quality of the finished bridge. Cableway tubes protect and secure the stay cables and are located at both ends, embedded in the main beam and main tower. Misalignment in the cableway tube positioning can cause friction between the cable and the stay cables, impacting their load and potentially leading to safety accidents.

[0003] Among the existing methods for positioning cableway tubes, one method is to install multiple prisms on the outer wall of the cableway tube at positions corresponding to the anchor point and exit center point, use a total station located on the bridge deck to measure the three-dimensional coordinates of the multiple prisms, and then calculate the coordinates of the anchor point and exit center point of the cableway tube to be measured, compare the measured coordinates with the coordinates of the theoretical anchor point and theoretical exit center point of the cableway tube, and finally correct the cableway tube whose deviation exceeds a threshold based on the measured coordinate data.

[0004] Regarding the above-mentioned related technologies, during the existing cableway tube positioning measurement, the process of installing multiple prisms on the outer wall of the cableway tube is relatively complicated. In order to ensure the measurement accuracy, the installation and positioning of the prisms takes a lot of time. After each adjustment of the cableway tube, the coordinates of the installation positions of multiple prisms need to be re-measured, and then complex calculations are performed to determine whether the cableway tube is corrected in place, resulting in low efficiency in the positioning measurement of the cableway tube.

[0005] The relevant Chinese patent with announcement number CN107014359B discloses a cable-stayed bridge tower cableway tube positioning measurement device and measurement method. A vertical lifting mechanism is installed on the base of a total station. The coordinates of the theoretical anchor point and the theoretical exit center point of the cableway tube are used to calculate the coordinates of a virtual point on the ground where the line connecting the two is extended. The three-dimensional coordinate position and the horizontal and vertical angles of the total station are adjusted based on the virtual coordinate point. The total station is made to emit a laser along the axis of the cableway tube toward the two transparent sheets located inside the cableway tube. The position of the cableway tube is adjusted so that the laser passes through the centers of the two transparent sheets at the same time to complete the correction of the cableway tube.

[0006] Regarding the above-mentioned related technologies, when solving the problem of positioning and measuring the cableway tubes of cable-stayed bridge towers, although the contents disclosed in the relevant patents can more conveniently realize the measurement and correction of a single cableway tube, since it is necessary to determine and adjust the position of the total station and the angle of the laser emission based on the theoretical coordinates of the cableway tube to be measured, it is inevitable to adjust the position and angle of the total station every time the measurement target is changed, which will also reduce the positioning and measurement efficiency of the cableway tube to a certain extent, and the transparent sheet inserted into the cableway tube needs to be customized according to the inner diameter of the cableway tube. In order to enable the total station to emit laser along the axis of the cableway tube, it is also necessary to add a precision lifting mechanism to match the total station, which will also increase the cost of positioning and measuring the cableway tube.

[0007] In summary, the existing cable-stayed bridge tower cableway tube positioning and measurement device is not easy to achieve efficient measurement of multiple cableway tubes. Summary of the Invention

[0008] Based on this, the purpose of the present invention is to provide a cable-stayed bridge tower cableway tube positioning measurement device and measurement method to solve the technical problem.

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cable-stayed bridge tower cableway tube positioning and measuring device, comprising a first clamping plate and a second clamping plate, wherein the first clamping plate and the second clamping plate are clamped oppositely on the outer wall of the cableway tube, and further comprising a first prism, wherein the first prism is located in the plane where the center point of the cableway tube outlet is located, and is installed on an adjustment mechanism that can be extended and retracted along the diameter direction of the cableway tube, and further comprising a second prism, wherein the second prism is located outside the cableway tube and is also installed on another adjustment mechanism that can be extended and retracted along the diameter direction of the cableway tube, and the projection of the second prism toward the ground is located within the projection of the cableway tube axis toward the ground.

[0010] By adopting the above technical solution, the two prisms are respectively placed at the center point of the cableway tube outlet and the measuring point outside the cableway tube using the adjustment mechanism for the prism position. The distance between the measuring point and the cableway tube axis is adjusted to a fixed value by the adjustment mechanism. Then, the coordinates of the anchor point can be conveniently calculated based on the existing distance between the center point of the cableway tube outlet and the anchor point in the reference plane, thereby reducing the number of prisms installed on the outer wall of the cableway tube. At the same time, the coordinate positions of the installed prisms can be more quickly and accurately located, which is convenient for subsequent measurement and correction of the cableway tube position.

[0011] The present invention is further configured such that one end of the first clamping plate is fixedly connected to an L-shaped connecting rod, the connecting rod is radially slidably connected to a first telescopic box along the cableway tube, and the first prism is fixedly connected to the end of the first telescopic box.

[0012] Preferably, the connecting rod is close to the end face of the cableway tube. Since the length of the connecting rod is a fixed value, the distance between the point where the second prism is projected onto the axis of the cableway tube and the first prism can be easily obtained.

[0013] The present invention is further configured such that an observation groove for determining the telescopic amount of the first telescopic box is provided at a portion of the connecting rod that is slidably connected to the first telescopic box.

[0014] Preferably, since the inner diameter of the cableway tube at the outlet is a fixed value, the specific extension of the first telescopic box can be determined according to the scale on the observation slot.

[0015] The present invention is further configured such that the first clamping plate is fixedly connected to a fixing rod along the radial direction of the cableway tube, a second telescopic box is slidably connected inside the fixing rod, and a second prism is installed at the end of the second telescopic box.

[0016] Preferably, when the first clamping plate and the second clamping plate are clamped on cableway tubes of different diameters, the distance between the second prism and the axis of the cableway tube can be determined by adjusting the telescopic amount of the second telescopic box.

[0017] The present invention is further configured such that the second clamping plate is slidably connected to at least one telescopic rod toward the outer wall of the cableway tube, and the telescopic rod slides along the diameter direction of the cableway tube. A spring in a compressed state is provided between the end of the telescopic rod and the surface of the second clamping plate toward the outer wall of the cableway tube, and the telescopic rod is used to determine the telescopic amount of the second telescopic box.

[0018] Preferably, after the first clamping plate and the second clamping plate clamp the cableway tube, the scale on the telescopic rod is observed to determine the extension of the second telescopic box, so that the distance from the second prism to the axis of the cableway tube is a certain value.

[0019] The present invention is further configured such that the end of the first splint away from the connecting rod is fixedly connected to a plumb line, the bottom end of the plumb line is fixedly connected to a plumb line, the bottom surface of the first splint is rotatably connected to a positioning rod, and when the end of the positioning rod is able to contact the plumb line, the line connecting the first prism and the second prism is in the same vertical plane as the axis of the cableway tube.

[0020] Preferably, after pre-fixing the first and second clamping plates, the positioning rod is rotated and the first and second clamping plates are adjusted along the circumferential direction of the cableway tube at the same time until the end of the positioning rod contacts the plumb line. At this time, the line connecting the first prism and the second prism is in the same vertical plane as the axis of the cableway tube.

[0021] A method for positioning and measuring cableway pipes of a cable-stayed bridge tower comprises the following steps:

[0022] Step 1: Establish a vertical reference plane using the line connecting the coordinates of the cableway management desired exit center point and the coordinates of the cableway management desired anchor point and the projection of the line toward the ground;

[0023] Step 2: Place a total station located in a vertical reference plane on the deck of the cable-stayed bridge, fix the first clamping plate and the second clamping plate to the cableway tube to be measured, and adjust the positions of the first prism and the second prism;

[0024] Step 3: Take the coordinates of the ideal exit center of the cableway pipe to be measured as the origin, measure the coordinates of the first prism, and correct the position of the cableway pipe so that the first prism coincides with the origin;

[0025] Step 4: Using the first prism as the axis, horizontally rotate the correction cableway tube to bring the second prism into the vertical reference plane;

[0026] Step 5: With the first prism as the axis, vertically rotate the corrected cableway tube so that the second prism coincides with the ideal point of the second prism. Repeat the above steps to position and measure other cableway tubes in the same vertical reference plane in the tower height direction.

[0027] By adopting the above technical solution, it is possible to simultaneously perform positioning measurements on multiple cableway pipes in the tower height direction without frequently moving the total station. By using two sets of positioning and measuring devices, when one set is used for measurement, the other set skips the cableway pipe being measured and is installed on the adjacent cableway pipe. This alternation can further improve the efficiency of cableway pipe positioning detection.

[0028] The present invention is further configured such that when installing the first splint and the second splint in step two, the first splint and the second splint are first pre-fixed, and while rotating the positioning rod, the first splint and the second splint are adjusted along the circumferential direction of the cableway tube until the end of the positioning rod can contact the plumb line, and then the first splint and the second splint are fixed.

[0029] Preferably, it is convenient to subsequently rotate and correct the cableway tube with the first prism as the axis point.

[0030] The present invention is further configured such that in step 2, the position of the first prism is first adjusted so that it is located at the outlet center of the cableway tube, the position of the second prism is adjusted so that its distance from the axis of the cableway tube is L1, and the distance between the point where the second prism is projected onto the axis of the cableway tube and the first prism is L2.

[0031] Preferably, when the installation frame of the cableway tube on the tower column is relatively complex, the positioning measurement of the cableway tube can be completed without locating the three-dimensional coordinates of the anchoring point.

[0032] The present invention is further configured such that the ideal point coordinates of the second prism in step five can be calculated in a vertical reference plane based on the ideal coordinates of the cableway tube outlet center point, L1 and L2.

[0033] Preferably, the length of the line connecting the first prism and the second prism is calculated based on the relationship between the three sides of a right triangle in a vertical reference plane, and then the coordinates of the second prism are calculated based on the coordinates of the first prism.

[0034] In summary, the present invention mainly has the following beneficial effects:

[0035] 1. The present invention is fixed to the outer wall of the cableway tube through a clamping structure, and utilizes an adjustment mechanism for the prism position to respectively place two prisms at the center point of the cableway tube outlet and a measuring point outside the cableway tube. The distance between the measuring point and the cableway tube axis is adjusted to a fixed value by the adjustment mechanism, and then the coordinates of the anchor point can be conveniently calculated based on the existing distance between the center point of the cableway tube outlet and the anchor point in the reference plane, thereby reducing the number of prisms installed on the outer wall of the cableway tube. At the same time, the coordinate positions of the installed prisms can be more quickly and accurately located, which facilitates subsequent measurement and correction of the cableway tube position.

[0036] 2. The present invention provides a clamping plate structure for clamping the cableway tube. The inclined surface of the clamping plate structure contacts the outer wall of the cableway tube. When the clamping plate structure is installed, the two prisms and the axis of the cableway tube are aligned in the same plane. At the same time, the adjustment mechanism can adjust the distance between the two prisms and the axis of the cableway tube, thereby better adapting to cableway tubes of different diameters.

[0037] 3. The present invention establishes a vertical reference plane so that the line connecting the theoretical outlet center point and the theoretical anchor point of the cableway tube lies within the vertical reference plane. When measuring the cableway tubes, the total station is placed on the bridge deck within the vertical reference plane. This allows for simultaneous positioning and measurement of multiple cableway tubes in the tower height direction without the need for frequent movement of the total station. Two sets of positioning and measurement devices are used. While one set is being used for measurement, the other set skips the cableway tube being measured and is installed on an adjacent cableway tube. This alternating method can further improve the efficiency of cableway tube positioning and detection.

[0038] 4. The present invention connects a plumb bob to the bottom of the splint structure, and uses a positioning rod rotatably connected to the splint in conjunction with the plumb bob line to determine the installation position of the splint, so that the prism at the bottom of the splint can be located within the projection of the cableway tube axis toward the ground. After the other prism is positioned at the exit center point of the cableway tube, the line connecting the two prisms and the axis of the cableway tube are located in the same vertical plane, which facilitates the subsequent angle adjustment of the cableway tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a three-dimensional diagram of the present invention installed on a cableway tube;

[0040] Figure 2 This is a three-dimensional diagram of the present invention installed on a cableway tube from another perspective;

[0041] Figure 3 For the present invention Figure 2 A magnified view of middle A;

[0042] Figure 4 This is a front view of the present invention installed with the cableway tube;

[0043] Figure 5 For the present invention Figure 4 Enlarged view of middle B;

[0044] Figure 6 A perspective view of the present invention;

[0045] Figure 7 This is a schematic diagram of measuring the prism coordinates in a reference plane using a total station after the present invention is installed on a cableway tube;

[0046] Figure 8 Schematic diagram of the length adjustment required for the first telescopic box of the present invention.

[0047] Description of reference numerals:

[0048] 1. First clamping plate; 2. Second clamping plate; 3. Bolt; 4. First prism; 5. Second prism; 6. Connecting rod; 601, Observation slot; 7. First telescopic box; 8. Fixing rod; 9. Second telescopic box; 10. Sinking line; 11. Sinking rod; 12. Positioning rod; 13. Telescopic rod; 14. Spring; 15. Cableway tube. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0050] The following describes an embodiment of the present invention based on its overall structure.

[0051] First embodiment:

[0052] A cable-stayed bridge tower cableway pipe positioning and measuring device, please refer to Figure 1-6, including a first clamping plate 1 and a second clamping plate 2 fixed to the outer wall of the cableway tube 15. Specifically, the opposite surfaces of the first clamping plate 1 and the second clamping plate 2 are parallel to each other, and the thickness and the inclination angle of the plate surfaces connected on both sides for contacting the cableway tube are also the same. The first clamping plate 1 is symmetrical with the second clamping plate 2 with the axis of the cableway tube. The first clamping plate 1 and the second clamping plate 2 are clamped on the outer wall of the cableway tube in opposite directions. The edges of the first clamping plate 1 and the second clamping plate 2 are connected by four bolts 3. The four bolts 3 also facilitate adjustment of the clamping between the first clamping plate 1 and the second clamping plate 2. The tightening force and balance are maintained so that the inclined surfaces of the first clamping plate 1 and the second clamping plate 2 are tightly attached to the outer wall of the cableway tube. The first prism 4 is located in the plane where the center point of the cableway tube outlet is located and is installed on an adjustment mechanism that extends and retracts along the diameter direction of the cableway tube. The second prism 5 is located outside the cableway tube and is also installed on another adjustment mechanism that extends and retracts along the diameter direction of the cableway tube. The projection of the second prism 5 toward the ground is located within the projection of the cableway tube axis toward the ground, which is convenient for subsequent angle correction of the cableway tube.

[0053] In the above embodiment, please refer to Figure 1-6 One end of the first splint 1 is fixedly connected to an L-shaped connecting rod 6, and the connecting rod 6 is connected to the first telescopic box 7 by sliding along the radial direction of the cableway tube. The first prism 4 is fixedly connected to the end of the first telescopic box 7. The first prism 4 is also located in the circular plane where the center point of the exit is located, which is surrounded by the inner wall of the cableway tube. The connecting rod 6 is close to the end face of the cableway tube. Since the length of the connecting rod 6 is a fixed value, the distance between the point where the second prism 5 is projected to the axis of the cableway tube and the positioned first prism 4 can be easily obtained.

[0054] The connecting rod 6 is provided with an observation groove 601 for determining the extension and contraction amount of the first telescopic box 7 at the part where it is slidably connected to the first telescopic box 7. The observation groove 601 is provided with a scale for easy observation on the side away from the end face of the cableway tube. The annular surface of the cableway tube is observed along the observation groove 601 with the scale provided on one side. The edge of the inner diameter of the cableway tube at the outlet can be seen through the observation groove 601. Since the inner diameter of the cableway tube at the outlet is a fixed value, the specific extension amount of the first telescopic box 7 can be determined according to the scale on the observation groove 601.

[0055] By observing the scale reading at the observation slot 601, the extension of the first telescopic box 7 is determined. Figure 8 Since the inner diameter r of the cableway tube and the distance h from the first prism 4 to the zero scale point of the observation slot 601 when the first telescopic box 7 is not extended are known values, after reading the inner diameter edge reading a at the cableway tube outlet, the following simple calculation is performed:

[0056] The required extension z of the first telescopic box 7 is equal to the inner diameter r of the cableway tube minus the difference between the distance h from the first prism 4 to the zero scale point of the observation slot 601 in the unextended state of the first telescopic box 7 and the reading a. The specific calculation formula is z=r-(ha), which can be used to conveniently calculate the required extension of the first telescopic box 7, thereby realizing the extension adjustment of the first telescopic box 7 and moving the first prism 4 to the center point of the cableway tube outlet.

[0057] In the above embodiment, please refer to Figure 1-6 The first clamping plate 1 is fixedly connected to a fixing rod 8 along the radial direction of the cableway tube, and a second telescopic box 9 is slidably connected inside the fixing rod 8. A second prism 5 is installed on the end of the second telescopic box 9. The second telescopic box 9 slides along the radial direction of the cableway tube. When the first clamping plate 1 and the second clamping plate 2 are clamped on cableway tubes of different diameters, the distance between the second prism 5 and the axis of the cableway tube can be determined by adjusting the telescopic amount of the second telescopic box 9.

[0058] The second splint 2 is connected to at least one telescopic rod 13 for sliding toward the outer wall of the cableway tube. In order to further improve the adjustment accuracy of the second telescopic box 9, two telescopic rods 13 are arranged at intervals along the direction parallel to the axis of the cableway tube. The telescopic rods 13 slide along the diameter direction of the cableway tube. A spring 14 in a compressed state is provided between the end of the telescopic rod 13 and the surface of the second splint 2 facing the outer wall of the cableway tube. Specifically, after the telescopic rod 13 contacts the outer wall of the cableway tube, the spring 14 will be further compressed.

[0059] The telescopic rod 13 is used to determine the telescopic amount of the second telescopic box 9. After the first clamping plate 1 and the second clamping plate 2 clamp the cableway tube, the scale on the telescopic rod 13 is observed to determine the extension amount of the second telescopic box 9, so that the distance from the second prism 5 to the axis of the cableway tube is a fixed value that is convenient for subsequent calculations.

[0060] Assuming the distance between the second prism 5 and the cableway tube axis is L1, and since the outer diameter R of the cableway tube is a fixed value, with the end of the telescopic rod 13 contacting the outer wall of the cableway tube as the zero-scale end, after the first and second clamping plates 1 and 2 are fixedly mounted, take the average value b of the readings from the zero-scale end of each telescopic rod 13 to the surface of the second clamping plate 2. When the second telescopic box 9 is not extended, the distance between the second prism 5 and the surface of the first clamping plate 1 is x, and the first and second clamping plates 1 and 2 are symmetrical with respect to the cableway tube axis.

[0061] From the above, it can be easily concluded that the distance L1 from the second prism 5 to the axis of the cableway tube is equal to the sum of the outer diameter R of the cableway tube, the average value b of the readings from each telescopic rod 13 to the surface of the second clamping plate 2, and the distance x from the second prism 5 to the surface of the first clamping plate 1 when the second telescopic box 9 is not extended. For the specific formula, refer to L1=R+b+x.

[0062] Since the average value b of the readings from each telescopic rod 13 to the surface of the second splint 2 is not necessarily an integer, in order to make the value of L1 convenient for the calculation of subsequent coordinate adjustment, it is necessary to adjust the extension of the second telescopic box 9 so that the value of L1 is an integer that is easy to calculate, thereby improving the efficiency of subsequent calculation and recording, and further improving the positioning detection efficiency of the cableway tube.

[0063] Second embodiment:

[0064] A cable-stayed bridge tower cableway pipe positioning and measuring device, please refer to Figure 1-6 On the basis of Example 1, the difference from Example 1 is that the end of the first splint 1 away from the connecting rod 6 is fixedly connected to the plumb line 10, the bottom end of the plumb line 10 is fixedly connected to the plumb line 11, and the bottom surface of the first splint 1 is rotatably connected to the positioning rod 12. In order to prevent the end of the positioning rod 12 from being unable to contact the plumb line 10, the length of the plumb line 10 is greater than the positioning rod 12. When the end of the positioning rod 12 can contact the plumb line 10, the line connecting the first prism 4 and the second prism 5 and the axis of the cableway tube are in the same vertical plane. After pre-fixing the first splint 1 and the second splint 2, rotate the positioning rod 12 and adjust the first splint 1 and the second splint 2 along the circumferential direction of the cableway tube at the same time until the end of the positioning rod 12 contacts the plumb line 10. At this time, the line connecting the first prism 4 and the second prism 5 and the axis of the cableway tube can be in the same vertical plane.

[0065] A method for measuring the positioning of cableway pipes on cable-stayed bridge towers. Figure 1-8 , the process includes the following steps,

[0066] Step 1: Establish a vertical reference plane using the line connecting the coordinates of the cableway management desired exit center point and the coordinates of the cableway management desired anchor point and the projection of the line toward the ground;

[0067] Step 2: Place a total station on the deck of the cable-stayed bridge in a vertical reference plane, fix the first clamping plate 1 and the second clamping plate 2 to the cableway tube to be measured, and adjust the positions of the first prism 4 and the second prism 5;

[0068] When installing the first splint 1 and the second splint 2, first pre-fix the first splint 1 and the second splint 2, and rotate the positioning rod 12 while adjusting the first splint 1 and the second splint 2 along the circumferential direction of the cableway tube until the end of the positioning rod 12 can contact the plumb line 10. At this time, the connecting line of the first prism 4 and the second prism 5 is in the same vertical plane as the axis of the cableway tube, and then fix the first splint 1 and the second splint 2 to facilitate the subsequent rotation and correction of the cableway tube with the first prism 4 as the axis point.

[0069] In step 2, the position of the first prism 4 is first adjusted so that it is located at the center of the outlet of the cableway tube, and the position of the second prism 5 is adjusted so that the distance between it and the axis of the cableway tube is L1, where L1 is specifically an integer that is easy to calculate. The distance between the point where the second prism 5 is projected onto the axis of the cableway tube and the first prism 4 is L2, and the value of L2 is determined by the length of the connecting rod 6. In other undisclosed embodiments, in order to allow the first splint 1 and the second splint 2 to avoid the complex tower column fixing steel frame, the connecting rod 6 can also be provided with a telescopic structure to facilitate length adjustment. When the mounting frame of the cableway tube on the tower column is relatively complex, the positioning measurement of the cableway tube can be completed without locating the three-dimensional coordinates of the anchor point, thereby effectively improving the positioning measurement efficiency of the cableway tube.

[0070] Step 3: Taking the coordinates of the center point of the ideal exit of the cableway pipe to be measured as the origin, measure the coordinates of the first prism 4, and correct the position of the cableway pipe so that the first prism 4 coincides with the origin. Specifically, first move the first prism 4 to a vertical reference plane in three-dimensional space, and then move the first prism 4 in two-dimensional space based on the vertical reference plane so that the first prism 4 coincides with the coordinates of the center point of the ideal exit of the cableway pipe;

[0071] Step 4: With the first prism 4 as the axis, horizontally rotate the corrected cableway tube so that the second prism 5 is in the vertical reference plane. Specifically, since the line connecting the first prism 4 and the second prism 5 and the axis of the cableway tube are in the same vertical plane, horizontally rotate the cableway tube so that the two vertical planes coincide.

[0072] Step 5: With the first prism 4 as the axis point, vertically rotate the corrected cableway tube so that the second prism 5 coincides with the ideal point of the second prism 5. Repeat the above steps to perform positioning measurement on other cableway tubes in the same vertical reference plane in the tower height direction.

[0073] The ideal point coordinates of the second prism 5 in step five can be calculated in the vertical reference plane based on the ideal coordinates of the center point of the cableway tube outlet, L1 and L2. The length of the line connecting the first prism 4 to the second prism 5 is calculated in the vertical reference plane using the three-side relationship of the right triangle, and then the ideal point coordinates of the second prism 5 are calculated using the coordinates of the first prism 4.

[0074] When the present invention is used, the first and second clamping plates 1 and 2 are pre-fixed to the outer wall of the cableway tube, the connecting rod 6 is placed in contact with the tube opening of the cableway tube, and the first and second clamping plates 1 and 2 are adjusted by rotating the positioning rod 12 in the circumferential direction of the cableway tube until the end of the positioning rod 12 contacts the plumb line 10, thereby fixing the first and second clamping plates 1 and 2.

[0075] Then, observe the scale of the position of the inner wall of the cableway tube at the observation slot 601, calculate the required extension of the first telescopic box 7, adjust the position of the first prism 4 to the center point of the cableway tube outlet, and then observe the scale on the telescopic rod 13 after the spring 14 is compressed, extend the second telescopic box 9, and make the distance between the second prism 5 and the axis of the cableway tube a fixed value that is convenient for calculation. Then, use the total station in the vertical reference plane to locate the coordinates of the first prism 4, and move the first prism 4 to the coordinates of the ideal exit point of the cableway tube by coordinate translation. Then, perform horizontal and vertical angle corrections on the cableway tube, and the positioning measurement of a cableway tube can be completed conveniently. The actual axis of the cableway tube now coincides with the ideal axis.

[0076] Furthermore, during the process of positioning and measuring the cableway tubes on the tower column, another set of positioning and measuring devices between adjacent cableway tubes are simultaneously disassembled and transferred, and the two sets of positioning and measuring devices alternately perform positioning and measurement of the cableway tubes, thereby further improving the efficiency of cableway tube positioning detection.

[0077] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A cable-stayed bridge tower cableway pipe positioning and measuring device, characterized in that: include: A first clamping plate (1) and a second clamping plate (2), wherein the first clamping plate (1) and the second clamping plate (2) are clamped on the outer wall of the cableway tube in opposite directions; A first prism (4), the first prism (4) is located in the plane where the center point of the cableway tube outlet is located, and is installed on an adjustment mechanism that is telescopic along the diameter direction of the cableway tube; The second prism (5) is located outside the cableway tube and is also installed on another adjustment mechanism that is telescopic in the diameter direction of the cableway tube. The projection of the second prism (5) toward the ground is located within the projection of the cableway tube axis toward the ground. One end of the first clamping plate (1) is fixedly connected to an L-shaped connecting rod (6). The connecting rod (6) is connected to a first telescopic box (7) by sliding along the radial direction of the cableway tube. The first prism (4) is fixedly connected to the end of the first telescopic box (7). The first clamping plate (1) is fixedly connected to a fixed L-shaped connecting rod (6) along the radial direction of the cableway tube. A fixed rod (8) is slidably connected to a second telescopic box (9) in the fixed rod (8), a second prism (5) is installed at the end of the second telescopic box (9), and the second clamping plate (2) is slidably connected to at least one telescopic rod (13) toward the outer wall of the cableway tube. The telescopic rod (13) slides along the diameter direction of the cableway tube, and a spring (14) in a compressed state is provided between the end of the telescopic rod (13) and the surface of the second clamping plate (2) toward the outer wall of the cableway tube. The telescopic rod (13) is used to determine the telescopic amount of the second telescopic box (9).

2. The cable-stayed bridge tower and cableway pipe positioning and measuring device according to claim 1, characterized in that: The connecting rod (6) is provided with an observation groove (601) for determining the telescopic amount of the first telescopic box (7) at the portion thereof that is slidably connected to the first telescopic box (7).

3. The cable-stayed bridge tower and cableway pipe positioning and measuring device according to claim 1, characterized in that: One end of the first clamping plate (1) away from the connecting rod (6) is fixedly connected to a plumb line (10), the bottom end of the plumb line (10) is fixedly connected to a plumb line (11), and the bottom surface of the first clamping plate (1) is rotatably connected to a positioning rod (12), and when the end of the positioning rod (12) is able to contact the plumb line (10), the line connecting the first prism (4) and the second prism (5) and the axis of the cableway tube are in the same vertical plane.

4. A method for positioning and measuring cableway pipes of cable-stayed bridge towers, characterized in that: The process of using the cable-stayed bridge tower cableway tube positioning and measuring device according to any one of claims 1 to 3 includes the following steps: Step 1: Establish a vertical reference plane using the line connecting the coordinates of the cableway management desired exit center point and the coordinates of the cableway management desired anchor point and the projection of the line toward the ground; Step 2: Place a total station located in a vertical reference plane on the deck of the cable-stayed bridge, fix the first clamping plate (1) and the second clamping plate (2) to the cableway tube to be measured, and adjust the positions of the first prism (4) and the second prism (5); Step 3: Taking the coordinates of the center point of the desired exit of the cableway pipe to be measured as the origin, measure the coordinates of the first prism (4), and correct the position of the cableway pipe so that the first prism (4) coincides with the origin; Step 4: With the first prism (4) as the axis point, horizontally rotate the correction cableway tube so that the second prism (5) is in the vertical reference plane; Step 5: With the first prism (4) as the axis point, vertically rotate the correction cableway tube so that the second prism (5) coincides with the ideal point of the second prism (5).

5. The method for positioning and measuring cableway pipes of cable-stayed bridge towers according to claim 4, characterized in that: When installing the first clamping plate (1) and the second clamping plate (2) in step 2, the first clamping plate (1) and the second clamping plate (2) are pre-fixed first, and the first clamping plate (1) and the second clamping plate (2) are adjusted by rotating the positioning rod (12) along the circumferential direction of the cableway tube until the end of the positioning rod (12) can contact the plumb line (10), and then the first clamping plate (1) and the second clamping plate (2) are fixed.

6. The method for positioning and measuring cableway pipes of cable-stayed bridge towers according to claim 4, characterized in that: In step 2, the position of the first prism (4) is first adjusted so that it is located at the center of the cableway tube outlet, and the position of the second prism (5) is adjusted so that the distance between it and the cableway tube axis is L1, and the distance between the point where the second prism (5) is projected onto the cableway tube axis and the first prism (4) is L2.

7. The method for positioning and measuring cableway pipes of cable-stayed bridge towers according to claim 6, characterized in that: The ideal point coordinates of the second prism (5) in step five can be calculated in the vertical reference plane based on the ideal coordinates of the center point of the cableway tube outlet, L1 and L2.

Images