Measuring and positioning device for mounting oversized shield tunnel box culvert

Abstract

The utility model provides a measuring and positioning device for installation of a super-large shield tunnel box culvert. The measuring and positioning device is used for solving the problems that in the prior art, installation is inconvenient, positioning is inaccurate, and measured data precision is poor. Comprising a reflection mechanism, an angle mechanism and a total station, the reflection mechanism comprises a reflection base, a support arm, a U-shaped frame, a cover body, a prism and a first L-shaped frame, one end of the support arm is vertical and fixedly connected to the top surface of the reflection base, the U-shaped frame is fixedly connected to the other end of the support arm, the cover body is arranged on the inner side of the U-shaped frame, and the prism and the first L-shaped frame are arranged in the cover body; the angle mechanism comprises a supporting plate, a working box, a second L-shaped frame, a laser target which is arranged on the top face of the supporting plate and can rotate relative to the supporting plate, and four angle adjusting assemblies which are of a rectangular structure and are arranged in the working box. The four angle adjusting assemblies are matched to adjust the inclination angle of the supporting plate. The first L-shaped frame and the second L-shaped frame are arranged in a longest diagonal mode. The total station is matched with the reflection mechanism and the angle mechanism to measure angular point coordinates of the box culvert. The device is simple and convenient to install and can also be accurately positioned, so that the measurement precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tunnel construction technical field, especially, relate to a kind of measurement positioning device for super large shield tunnel box culvert installation. BACKGROUND

[0002] At present, in the installation process of full-precast box culvert inside super large diameter shield tunnel, the traditional measurement and positioning method is that measurement personnel uses total station prism-free method to measure the positioning of box culvert top center line, uses level to place box culvert top to check whether the left and right end faces of box culvert are horizontal;The level is placed on the top of the front and rear box culvert to determine whether the box culvert lap joint is smooth, and when checking whether the left and right end faces of box culvert and the front and rear box culvert lap joint are horizontal, whether the level is completely horizontal and the visual error when reading can affect the measurement accuracy;Whether the distance difference between the two ends of box culvert and the inner wall of segment meets the certain turning requirement limit difference is measured by using steel ruler, and whether the steel ruler is vertical and the visual error when reading can affect the measurement accuracy, and all of them need to be operated manually in turn, which is difficult to quickly complete a large number of measurement tasks, and affects the construction progress in the project with tight schedule.

[0003] In addition, the butt joint point coordinates of box culvert are measured by using total station, and in the measurement process, ordinary prism or reflective patch is placed manually on the corner point of box culvert, which is inconvenient to install due to the lack of clamping device, and the placement position is not fixed every time, so that the installation placement position deviation is large, thereby affecting the measurement data accuracy, and the accuracy index of accurate measurement cannot be met. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a kind of measurement positioning device for super large shield tunnel box culvert installation, to solve the problems of inconvenient installation, inaccurate positioning and poor measurement data accuracy in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a kind of measurement positioning device for super large shield tunnel box culvert installation, comprising:

[0006] The reflection mechanism includes a reflection base, a branch arm perpendicular to one end of the reflection base top surface, a U-shaped frame fixed to the other end of the branch arm, a cover body provided inside the U-shaped frame, a prism provided in the cover body, and a first L-shaped frame, the first L-shaped frame side surface is fixedly connected with the reflection base bottom surface;

[0007] The angle mechanism comprises a support plate, a working box, a second L-shaped frame, a laser target arranged on the top surface of the support plate and rotatable relative to the support plate, and four angle adjusting assemblies arranged in the working box in a rectangular structure, and the side surface of the second L-shaped frame is fixedly connected with the bottom surface of the working box, and the four angle adjusting assemblies cooperate to adjust the inclination angle of the support plate.

[0008] The first L-shaped frame is arranged on two adjacent sides of the angle point of the box culvert to be assembled, the second L-shaped frame is arranged on two adjacent sides of the angle point of the box culvert that has been assembled, and the first L-shaped frame and the second L-shaped frame are arranged in the longest diagonal direction.

[0009] The total station cooperates with the reflecting mechanism and the angle mechanism to measure the coordinates of the angle point of the box culvert.

[0010] Optionally, the measuring mechanism further comprises a rotating assembly, and the laser target is rotatably connected with the support plate through the rotating assembly.

[0011] Optionally, the top of the support plate is provided with a first blind hole and a second blind hole, the second blind hole is located in the middle of the first blind hole, and the diameter of the first blind hole is smaller than the diameter of the second blind hole.

[0012] The rotating assembly comprises a rotating shaft coaxially fixed to the bottom of the laser target, a rotating disc coaxially and slidingly matched with the rotating shaft, a limiting column vertically and fixedly connected to the side surface of the rotating shaft, a limiting disc coaxially and fixedly matched with the rotating shaft and located below the rotating disc, and an elastic member, the rotating shaft is coaxially and slidingly matched with the first blind hole, the limiting disc is slidingly matched with the side wall of the second blind hole, the rotating disc is fixedly connected with the top of the second blind hole, one side of the rotating disc towards the bottom of the first blind hole is provided with a plurality of index teeth, a tooth groove is formed between adjacent index teeth, and the limiting column is clamped in the tooth groove.

[0013] The elastic member is used to reset the rotating shaft to the rotating disc.

[0014] Optionally, the elastic member comprises a spring, the spring is sleeved on the rotating shaft, and the two ends of the spring are respectively abutted with the bottom of the second blind hole and the bottom of the limiting disc.

[0015] Optionally, the center of the prism of the laser target coincides with the central axis of the rotating shaft.

[0016] Optionally, the top surface of the support plate is provided with an angle scale line of 0-360° along the circumference of the first blind hole.

[0017] Optionally, the top of the working box is provided with four through holes in a rectangular structure and in communication with the inside of the working box.

[0018] Four angle adjusting assemblies extend out of the top of the working box through the through holes respectively;

[0019] Each angle adjusting assembly comprises a knob rotationally connected to the side of the working table, a screw rod vertically and rotationally connected in the working table, a roller threadedly matched with the screw rod, a first bevel gear coaxially and fixedly connected with the knob, a second bevel gear coaxially and fixedly matched with the screw rod, the first bevel gear and the second bevel gear are in mesh transmission, the screw rod is parallel to the central axis of the roller, the inner surface of the through hole has internal threads threadedly matched with the roller, and the top end of the roller is rotationally connected with the bottom of the support plate.

[0020] Optionally, the inclination angle between the support plate and the horizontal plane is 0-18°.

[0021] Optionally, the inclination angle between the support plate and the horizontal plane is 13°.

[0022] Optionally, the working table has a battery for supplying power to the laser target.

[0023] The working table has a power display window on one side.

[0024] As described above, the utility model discloses a kind of measurement positioning devices for super-large shield tunnel box culvert installation, at least with the following beneficial effects:

[0025] The first L-shaped frame is placed on the adjacent two sides of the top corner point of the left front of the box culvert to be assembled, at this time, the bottom surface of the reflecting base is in contact with the top surface of the box culvert to be assembled, so that the reflecting mechanism can be quickly and stably placed on the adjacent two sides of the corner point of the box culvert, without other complex installation equipment or auxiliary tools, so that the installation process of the reflecting mechanism is simple and convenient, thereby improving the installation convenience and adaptability of the reflecting mechanism, the second L-shaped frame is placed on the adjacent two sides of the top corner point of the right rear of the assembled box culvert, at this time, the bottom surface of the working box is in contact with the top surface of the assembled box culvert, the second L-shaped frame is adapted to the shape of the corner point of the box culvert, and can be stably placed on the adjacent two sides of the corner point of the assembled box culvert, corresponding to the first L-shaped frame, so as to ensure the installation stability of the angle mechanism on the box culvert and the accuracy of the measurement reference, the laser target is rotated to the prism direction of the reflecting mechanism, the total station can observe the laser target and the prism at the same time, which can quickly and accurately measure the corner point coordinates of the box culvert, improve the measurement efficiency and precision, and avoid the problem of flying points, when measuring the angle, the total station measures the horizontal angle and vertical angle between the laser target and the prism through the high-precision angle measuring system, during the measurement process, the telescope of the total station aims at the center of the laser target, and records the corresponding angle value, and the total station also automatically calculates the azimuth angle and compares it with the allowed limit difference of the analytical azimuth angle, so as to ensure that the measurement result is within the specified accuracy range; when measuring the distance, the total station measures the distance between the total station and the prism by using the distance measuring function, during the measurement process, the total station emits a beam of infrared light or laser signal, the signal is reflected back after meeting the prism, and the total station calculates the distance value according to the propagation time and speed of the signal; after the measured data is processed and calculated, the relative position relationship between the box culvert to be assembled and the assembled box culvert can be obtained, including horizontal displacement, vertical displacement and rotation angle, etc., according to these data, the box culvert assembling operation can be accurately guided, so as to ensure that the assembling precision meets the design requirements, thereby ensuring the quality and stability of the overall structure of the box culvert. The four angle adjusting assemblies in the rectangular structure can flexibly adjust the inclination angle of the supporting plate, so that the pitch angle of the laser target can be increased, thereby the total station can be used to measure the laser target at a short distance, so as to ensure that the laser target can receive the signal emitted by the total station at the best angle, and improve the accuracy and reliability of the measurement. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a perspective structural schematic view of the angle mechanism of the utility model;

[0027] Figure 2 It is a perspective structural schematic view of the reflecting mechanism of the utility model;

[0028] Figure 3 It is a sectional view of the rotating assembly of the utility model;

[0029] Figure 4The angle adjusting assembly of the utility model is shown in the schematic diagram.

[0030] Element number explanation

[0031] Reflecting mechanism 1, reflecting base 11, supporting arm 12, U-shaped frame 13, cover 14, prism 15, first L-shaped frame 16;

[0032] Angle mechanism 2, supporting plate 21, first blind hole 211, second blind hole 212, working box 22, second L-shaped frame 23, laser target 24, angle adjusting assembly 25, knob 251, screw rod 252, roller 253, first bevel gear 254, second bevel gear 255, rotating assembly 26, rotating shaft 261, rotating disc 262, limiting column 263, limiting disc 264, elastic member 265, index tooth 266. DETAILED DESCRIPTION

[0033] The following specific embodiments illustrate the implementation of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0034] Please refer to Figures 1 to 4 It is understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the utility model, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, the change or adjustment of relative relationship, without substantial change of technical content, is also regarded as the scope of the utility model.

[0035] The following examples are only for illustration. Each example can be combined, which is not limited to the content shown in the following single example.

[0036] In this embodiment, please refer to Figures 1 to 4The utility model provides a kind of measurement positioning device for super-large shield tunnel box culvert installation, comprising: reflecting mechanism 1, angle mechanism 2 and total station, the reflecting mechanism 1 includes reflecting base 11, the branch 12 of one end vertical and fixedly connected to the top surface of reflecting base 11, the U-shaped frame 13 of the other end fixedly connected to the branch 12, the cover 14 being located in the inboard of U-shaped frame 13, the prism 15 being located in the cover 14, the first L-shaped frame 16, the first L-shaped frame 16 side and the bottom surface of reflecting base 11 fixed connection;The shape of first L-shaped frame 16 and box culvert angle point is adapted, and the top surface of box culvert is rectangle, and the position of box culvert angle point adjacent two sides can be adapted with first L-shaped frame 16;Prism 15 can be standard round prism 15, micro prism 15, 360 ° prism 15, spherical prism 15 etc.

[0037] The angle mechanism 2 includes support plate 21, working tank 22, second L-shaped frame 23, laser target 24 being located in the top surface of support plate 21 and can be rotated relative to support plate 21, four angle adjusting assemblies 25 being located in the rectangular structure in working tank 22, the side of second L-shaped frame 23 and the bottom surface of working tank 22 are fixedly connected, and four angle adjusting assemblies 25 cooperate to adjust the inclination angle of support plate 21;The working tank 22 can be hollow rectangular box;Second L-shaped frame 23 and the shape of box culvert angle point are adapted, and the top surface of box culvert is rectangle, and the position of box culvert angle point adjacent two sides can be adapted with second L-shaped frame 23;

[0038] The first L-shaped frame 16 is placed on the adjacent two sides of the box culvert angle point to be assembled, the second L-shaped frame 23 is placed on the adjacent two sides of the box culvert angle point that has been assembled, and the first L-shaped frame 16 and the second L-shaped frame 23 are arranged in the longest diagonal line;Wherein the box culvert that has been assembled and the box culvert to be assembled can be adjacent arrangement;

[0039] The total station is measured with the reflecting mechanism 1 and the angle mechanism 2 respectively. Total station can be arranged on the box culvert that has been assembled, laser target 24 and prism 15 can be observed simultaneously, and total station is existing total station, such as American Thermo Fisher total station;

[0040] The first L-shaped frame 16 is placed on the adjacent two sides of the top corner point of the left front of the box culvert to be assembled, at this time the bottom surface of the reflecting base 11 is in contact with the top surface of the box culvert to be assembled, which can quickly and stably place the reflecting mechanism 1 on the adjacent two sides of the corner point of the box culvert, without the need for other complex installation equipment or auxiliary tools, so that the installation process of the reflecting mechanism 1 is simple and convenient, thereby improving the installation convenience and adaptability of the reflecting mechanism 1. The second L-shaped frame 23 is placed on the adjacent two sides of the top corner point of the right rear of the assembled box culvert, at this time the bottom surface of the working box 22 is in contact with the top surface of the assembled box culvert, the second L-shaped frame is adapted to the shape of the corner point of the box culvert, and can be stably placed on the adjacent two sides of the corner point of the assembled box culvert, corresponding to the first L-shaped frame, ensuring the installation stability of the angle mechanism 2 on the box culvert and the accuracy of the measurement reference. The laser target 24 is rotated to the direction of the prism 15 of the reflecting mechanism 1, and the total station can observe the laser target 24 and the prism 15 at the same time, which can quickly and accurately measure the corner point coordinates of the box culvert, improve the measurement efficiency and accuracy, and avoid the problem of flying points. When measuring the angle, the total station measures the horizontal angle and vertical angle between the laser target 24 and the prism 15 through its high-precision angle measurement system. During the measurement process, the telescope of the total station aims at the center of the laser target 24, and records the corresponding angle value. At the same time, the total station also automatically calculates the azimuth angle and compares it with the allowed limit difference of the analytical azimuth angle, to ensure that the measurement result is within the specified accuracy range. When measuring the distance, the total station uses its distance measurement function to measure the distance between the total station and the prism 15. During the measurement process, the total station emits a beam of infrared light or laser signal, which is reflected back after encountering the prism 15. After receiving the reflected signal, the total station calculates the distance value according to the propagation time and speed of the signal. After processing and calculating the measured data, the relative positional relationship between the box culvert to be assembled and the assembled box culvert can be obtained, including horizontal displacement, vertical displacement and rotation angle, etc. According to these data, the box culvert assembly operation can be accurately guided to ensure that the assembly accuracy meets the design requirements, thereby ensuring the quality and stability of the overall structure of the box culvert assembly. The four angle adjusting assemblies 25 in a rectangular structure can flexibly adjust the inclination angle of the supporting plate 21, so that the elevation angle of the laser target 24 can be increased, thereby enabling the total station to measure the laser target 24 at close range, ensuring that the laser target 24 can receive the signal emitted by the total station at the best angle, and improving the accuracy and reliability of the measurement.

[0041] In this embodiment, please refer to Figure 1The measuring mechanism further comprises a rotating assembly 26, and the laser target 24 is rotationally connected with the support plate 21 through the rotating assembly 26. The rotating assembly 26 can be an assembly comprising a rotating shaft 261 and a bearing, the support plate 21 is provided with a recess hole coaxially fixedly matched with an outer ring of the bearing, the rotating shaft 261 is fixedly connected with a bottom of the laser target 24, and the rotating shaft 261 is coaxially fixedly matched with an inner ring of the bearing. The laser target 24 can rotate relative to a top surface of the support plate 21, and the flexibility of operation is enhanced.

[0042] In the embodiment, referring to Figure 1 and Figure 3 , the support plate 21 is provided with a first blind hole 211 and a second blind hole 212 at a top portion of the support plate 21, the second blind hole 212 is located at a middle portion of the first blind hole 211, and a diameter of the first blind hole 211 is smaller than a diameter of the second blind hole 212.

[0043] The rotating assembly 26 comprises the rotating shaft 261 coaxially fixedly connected with the bottom of the laser target 24, a rotating disc 262 coaxially slidingly matched with the rotating shaft 261, a limiting column 263 vertically and fixedly connected with a side surface of the rotating shaft 261, a limiting disc 264 coaxially fixedly matched with the rotating shaft 261 and located below the rotating disc 262, and an elastic member 265. The rotating shaft 261 is coaxially slidingly matched with the first blind hole 211, the limiting disc 264 is slidingly matched with a side wall of the second blind hole 212, and the rotating disc 262 is fixedly connected with a top portion of the second blind hole 212. One side of the rotating disc 262 facing the bottom of the first blind hole 211 is provided with a plurality of index teeth 266, and a tooth groove is formed between adjacent index teeth 266, and the limiting column 263 is clamped in the tooth groove. The rotating angle of the laser target 24 can be accurately subdivided and positioned, the rotating angle of the laser target 24 can be accurately divided into smaller index values through the multi-tooth indexing structure, the high requirement for angle accuracy in different measurement scenarios is met, the direction of the laser target 24 can be accurately adjusted according to specific needs of a measurer, and the accuracy of measurement is ensured.

[0044] The elastic member 265 is used for resetting the rotating shaft 261 to the rotating disc 262. The elastic member 265 can timely restore the rotating shaft 261 to an initial or set position, and the position stability and repeatability of the laser target 24 are ensured. The top surface of the support plate 21 and located around the first blind hole 211 is provided with a 360° circumferential scale, which is matched with the index teeth 266 and the limiting column 263 to provide an intuitive angle indication for an operator, and the operation efficiency and convenience are improved.

[0045] By compressing the elastic member 265 downward, the rotating shaft 261 slides downward in the first blind hole 211 and the second blind hole 212, driving the limiting column 263 and the limiting disc 264 to move downward in the second blind hole 212, rotating the rotating shaft 261 to make the limiting column 263 rotate from one tooth groove position to another tooth groove position. When the rotating shaft 261 is loosened, the elastic member 265 resets the rotating shaft 261 upward and clamps the limiting column 263 in another tooth groove, so as to meet the high requirement of angle accuracy in different measurement scenarios, and the measurement personnel can accurately adjust the direction of the laser target 24 according to the specific needs, ensuring the accuracy of measurement.

[0046] In the embodiment, please refer to Figure 3 The elastic member 265 includes a spring, the spring is sleeved on the rotating shaft 261, and the two ends of the spring are respectively in abutment with the bottom of the second blind hole 212 and the bottom of the limiting disc 264. The spring can provide a stable and continuous resetting force for the rotating shaft 261. When the height position of the laser target 24 is changed, that is, the rotating shaft 261 slides in the first blind hole 211, the spring will be compressed or stretched. After the rotating angle adjustment of the laser target 24 is completed, the spring will push the rotating shaft 261 to the rotating disc 262 direction by virtue of the elastic recovery capacity of the spring, so as to accurately return the laser target 24 to the initial or preset height position, which helps to ensure the repeatability and consistency of measurement and reduce the measurement error caused by the position deviation of the laser target 24.

[0047] In the embodiment, the center of the prism 15 of the laser target 24 coincides with the center axis of the rotating shaft 261, and the reflection path of the laser beam can be more stable and accurate after being incident on the prism 15, thereby improving the accuracy of the reflection signal received by the total station, and further improving the measurement accuracy of the box culvert angle point coordinates.

[0048] In the embodiment, the top surface of the support plate 21 has an angle scale line of 0-360° along the circumference of the first blind hole 211. By cooperating with the indexing tooth 266 and the limiting column 263, an intuitive angle indication is provided for the operator, improving the operation efficiency and convenience.

[0049] In the embodiment, please refer to Figure 1 and Figure 4 The top of the working box 22 has four through holes in a rectangular structure and in communication with the inside of the working box 22.

[0050] The four angle adjustment assemblies 25 respectively extend out of the top of the working box 22 through the through holes.

[0051] Each of the angle adjustment assemblies 25 comprises a knob 251 rotationally connected to a side of the workbench, a screw rod 252 vertically and rotationally connected in the workbench, a roller 253 threadedly matched with the screw rod 252, a first bevel gear 254 coaxially and fixedly connected with the knob 251, a second bevel gear 255 coaxially and fixedly matched with the screw rod 252, the first bevel gear 254 and the second bevel gear 255 are in mesh transmission, the screw rod 252 is parallel to the central axis of the roller 253, the inner surface of the through hole has internal threads threadedly matched with the roller 253, and the top end of the roller 253 is rotationally connected to the bottom of the support plate 21.

[0052] The knob 251 is rotated to drive the first bevel gear 254 to rotate, the first bevel gear 254 is in mesh transmission with the second bevel gear 255 to drive the screw rod 252 to rotate, the screw rod 252 is threadedly matched with the roller 253, the roller 253 is threadedly matched with the internal threads of the inner surface of the through hole, the rotation can be accurately converted into the lifting movement of the roller 253, and then the angle of the support plate 21 can be accurately adjusted, the bevel gear transmission can guarantee the stability and accuracy of power transmission, reduce transmission error, and the thread matching of the screw rod 252 and the roller 253 further refines the adjustment amount, so that the angle adjustment can reach high accuracy and meet the requirements of different working scenes on the angle accuracy.

[0053] In the embodiment, the inclination angle of the support plate 21 to the horizontal plane is 0-18°. By increasing the pitch angle of the laser target 24, the total station can still realize measurement work when the distance between the total station and the laser target 24 is relatively short, thereby solving the problem that the measurement of the laser target 24 at a short distance exceeds the range of the laser target 24.

[0054] In the embodiment, the inclination angle of the support plate 21 to the horizontal plane is 13°. By increasing the pitch angle of the laser target 24 by +13°, the total station can still realize measurement work when the distance between the total station and the laser target 24 is relatively short, thereby solving the problem that the measurement of the laser target 24 at a short distance exceeds the range of the laser target 24.

[0055] In the embodiment, the workbench has a battery for supplying power to the laser target 24; the battery can supply power to the laser target 24, and one side of the workbench has a power display window, so that the power information of the battery can be conveniently viewed.

[0056] Working principle: in use, by placing the first L-shaped frame 16 on the adjacent two sides of the top corner point of the left front of the to-be-assembled box culvert, at this time the bottom surface of the reflecting base 11 is in contact with the top surface of the to-be-assembled box culvert, the second L-shaped frame 23 is placed on the adjacent two sides of the top corner point of the right rear of the assembled box culvert, at this time the bottom surface of the working box 22 is in contact with the top surface of the assembled box culvert, the second L-shaped frame is matched with the corner point shape of the assembled box culvert, and can be stably placed on the adjacent two sides of the corner point of the assembled box culvert, corresponding to the first L-shaped frame, the laser target 24 is rotated to the direction of the prism 15 of the reflecting mechanism 1, the total station can simultaneously observe the laser target 24 and the prism 15, the elastic element 265 is compressed downward to make the rotating shaft 261 slide downward in the first blind hole 211 and the second blind hole 212, drive the limiting column 263 and the limiting disc 264 to move downward in the second blind hole 212, rotate the rotating shaft 261 to make the limiting column 263 rotate, and the limiting column 263 is transferred from one tooth groove position to another tooth groove position, when the rotating shaft 261 is loosened, the elastic element 265 resets the rotating shaft 261 upward and clamps the limiting column 263 in another tooth groove, so that the high requirement for angle accuracy in different measurement scenes can be met, the direction of the laser target 24 can be accurately adjusted according to specific needs, the measurement accuracy is ensured, the first bevel gear 254 is driven to rotate by rotating the knob 251, the first bevel gear 254 is meshed and driven with the second bevel gear 255, the lead screw 252 is rotated, the lead screw 252 is threadedly matched with the roller 253, and the roller 253 is threadedly matched with the internal thread on the inner surface of the through hole, so that the rotating rotation can be accurately converted into the lifting movement of the roller 253, and the four angle adjusting assemblies 25 independently control the extension length of each roller 253, so that the height and inclination angle of the supporting plate 21 can be accurately adjusted and controlled, when the angle is measured, the total station measures the horizontal angle and vertical angle between the laser target 24 and the prism 15 through the high-precision angle measuring system thereof, during the measurement process, the telescope of the total station aims at the center of the laser target 24, and the corresponding angle value is recorded, meanwhile, the total station also automatically calculates the azimuth angle and compares it with the allowed limit difference of the analytical azimuth angle, so as to ensure that the measurement result is within the specified accuracy range; when the distance is measured, the total station measures the distance between the total station and the prism 15 by using the distance measuring function thereof, during the measurement process, the total station emits an infrared light or laser signal, the signal is reflected back after meeting the prism 15, and the total station calculates the distance value according to the propagation time and speed of the signal; after the measured data is processed and calculated, the relative position relationship between the to-be-assembled box culvert and the assembled box culvert, including the horizontal displacement, the vertical displacement and the rotation angle, etc., can be obtained, according to these data, the box culvert assembly operation can be accurately guided, the assembly accuracy is ensured to meet the design requirements, so as to ensure the quality of the box culvert assembly and the stability of the overall structure.

[0057] In summary, the utility model discloses a first L type frame 16 is placed on the adjacent two sides of the top corner point of the left front of the box culvert to be assembled, the bottom surface of the reflecting base 11 contacts and cooperates with the top surface of the box culvert to be assembled at this time, can place the reflecting mechanism 1 on the adjacent two sides of the corner point of the box culvert stably and quickly, does not need other complex installation equipment or auxiliary tools, makes the installation process of reflecting mechanism 1 simple, convenient, thereby improve the installation convenience and adaptability of reflecting mechanism 1, place the second L type frame 23 on the adjacent two sides of the top corner point of the right rear of the box culvert to be assembled, the bottom surface of the working box 22 contacts and cooperates with the top surface of the box culvert to be assembled at this time, the second L type frame is adapted to the shape of the corner point of the box culvert, can be placed on the adjacent two sides of the corner point of the box culvert stably, corresponds to the first L type frame, guarantees the installation stability and the reference accuracy of measurement of angle mechanism 2 on the box culvert, rotate the laser target 24 to the direction of the prism 15 of reflecting mechanism 1, total station can observe laser target 24 and prism 15 simultaneously, can measure the corner point coordinate of the box culvert quickly and accurately, improves the measurement efficiency and precision, also can avoid the problem of fly point, when measuring the angle, total station measures the horizontal angle and vertical angle between laser target 24 and prism 15 through its high-precision angle measuring system, during the measurement process, the telescope of total station aims at the center of laser target 24, and the corresponding angle value is recorded, meanwhile, total station also automatically calculates the azimuth angle and compares with the allowable limit difference of the azimuth angle, to ensure that the measurement result is within the specified accuracy range, when measuring the distance, total station measures the distance between total station and prism 15 using its distance measuring function, during the measurement process, total station emits an infrared light or laser signal, the signal is reflected back after meeting prism 15, and total station calculates the distance value according to the propagation time and speed of the signal after receiving the reflected signal, after processing and calculating the measured data, the relative position relationship between the box culvert to be assembled and the box culvert to be assembled, including horizontal displacement, vertical displacement and rotation angle, can be obtained, according to these data, the box culvert assembling operation can be accurately guided, to ensure that the assembling precision meets the design requirements, thereby ensuring the quality and stability of the overall structure of the box culvert assembly. The inclination angle of support plate 21 can be adjusted flexibly through four angle adjusting assemblies 25 in rectangular structure, so that the pitch angle of laser target 24 can be increased, thereby the laser target 24 can be measured at close range by total station, to ensure that the laser target 24 can receive the signal emitted by total station at the best angle, improve the accuracy and reliability of measurement. Therefore, the utility model effectively overcomes the shortcomings in the prior art and has high industrial utilization value.

[0058] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A measuring and positioning device for installing a box culvert in an ultra-large shield tunnel, characterized in that, include: A reflective mechanism, comprising a reflective base, a support arm with one end perpendicular and fixed to the top surface of the reflective base, a U-shaped frame fixed to the other end of the support arm, a cover disposed inside the U-shaped frame, a prism disposed inside the cover, and a first L-shaped frame, the side of the first L-shaped frame being fixedly connected to the bottom surface of the reflective base. An angle mechanism, comprising a support plate, a work box, a second L-shaped frame, a laser target disposed on the top surface of the support plate and rotatable relative to the support plate, and four rectangular angle adjustment components disposed in the work box. The side of the second L-shaped frame is fixedly connected to the bottom surface of the work box, and the four angle adjustment components cooperate to adjust the tilt angle of the support plate. The first L-shaped frame is placed on the two adjacent sides of the corner point of the box culvert to be assembled, and the second L-shaped frame is placed on the two adjacent sides of the corner point of the assembled box culvert. The first L-shaped frame and the second L-shaped frame are arranged along the longest diagonal. A total station, which works in conjunction with the reflection mechanism and the angle mechanism to measure the coordinates of the corner points of the box culvert.

2. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 1, characterized in that: The measuring mechanism also includes a rotating component, through which the laser target is rotatably connected to the support plate.

3. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 2, characterized in that: The top of the support plate has a first blind hole and a second blind hole, the second blind hole being located in the middle of the first blind hole, and the diameter of the first blind hole being smaller than the diameter of the second blind hole; The rotating assembly includes a rotating shaft coaxially fixed to the bottom of the laser target, a turntable coaxially slidably engaged with the rotating shaft, a limiting post vertically and fixedly connected to the side of the rotating shaft, a limiting plate coaxially fixedly engaged with the rotating shaft and located below the turntable, and an elastic element. The rotating shaft is coaxially slidably engaged with the first blind hole, the limiting plate is slidably engaged with the side wall of the second blind hole, the turntable is fixedly connected to the top of the second blind hole, and the turntable has multiple indexing teeth on the side facing the bottom of the first blind hole, with tooth grooves formed between adjacent indexing teeth, and the limiting post is locked in the tooth groove. The elastic element is used to reset the axis of rotation to the direction of the turntable.

4. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 3, characterized in that: The elastic element includes a spring, which is sleeved on the rotating shaft, and the two ends of the spring abut against the bottom of the second blind hole and the bottom of the limiting plate, respectively.

5. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 3, characterized in that: The center of the prism of the laser target coincides with the central axis of the rotating shaft.

6. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 3, characterized in that: The top surface of the support plate has angle scale lines of 0~360° along the circumference of the first blind hole.

7. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 1, characterized in that: The top of the work box has four rectangular through holes that communicate with the interior of the work box; The four angle adjustment components extend out of the top of the work box through the through holes; Each angle adjustment assembly includes a knob rotatably connected to the side of the worktable, a lead screw vertically and rotatably connected to the worktable, a roller threadedly engaged with the lead screw, a first bevel gear coaxially and fixedly connected to the knob, and a second bevel gear coaxially and fixedly engaged with the lead screw. The first bevel gear and the second bevel gear mesh and drive each other. The lead screw is parallel to the central axis of the roller. The inner surface of the through hole has an internal thread that engages with the threaded roller. The top end of the roller is rotatably connected to the bottom of the support plate.

8. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 1, characterized in that: The angle of inclination of the support plate to the horizontal plane is 0~18°.

9. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 8, characterized in that: The support plate is tilted at an angle of 13° to the horizontal plane.

10. The measuring and positioning device for installing ultra-large shield tunnel box culverts according to claim 1, characterized in that: The worktable contains a battery that powers the laser target; The workbench has a power display window on one side.

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