Automatic verification tool for horizontal direction of primary measurement return of total station

Abstract

The utility model discloses an automatic verification tool for the horizontal direction of the first measurement return of a total station, which comprises a measuring part, a positioning part, a positioning part, a positioning part, a positioning part, a positioning part and an angle measuring part, the measuring part comprises a mounting seat, a slewing mechanism, a leveling mechanism, a clamping mechanism and an angle measuring mechanism, the top surface of the slewing mechanism is flush with the top surface of the mounting seat, the slewing mechanism is used for placing the total station, and the angle measuring mechanism is used for positioning the total station; the base of the total station is driven to rotate clockwise and anticlockwise; one end of the clamping mechanism is connected with the mounting seat, and the other end of the clamping mechanism can flexibly clamp a telescope of the total station, so that the telescope and the clamping mechanism are relatively static and have a certain clearance; the leveling mechanism is located at the bottom of the mounting base and can adjust the height and the inclination angle of the mounting base. The angle measuring mechanism is coaxially mounted on the slewing mechanism and can measure the rotation true value of the total station and output data; and the error calibration part comprises an auto-collimation light pipe and an auto-collimation light pipe mounting rack.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of equipment calibration, in particular to an automatic calibration tool for horizontal direction of one measuring cycle of total station. BACKGROUND

[0002] In the calibration procedure of total station, the calibration of horizontal direction of one measuring cycle of total station often needs to be carried out by manual cooperation with multi-tooth indexing table, and manual aiming and reading are adopted, so that the calibration of single instrument consumes more time, and random error caused by naked eye observation exists. Now, an electric automatic calibration form is urgently needed to simplify the complicated manual process and improve the efficiency and stability of calibration.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the utility model and should not be regarded as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing an automatic calibration tool for horizontal direction of one measuring cycle of total station.

[0005] To achieve the above-mentioned purpose, the utility model provides an automatic calibration tool for horizontal direction of one measuring cycle of total station, which comprises a measuring part, a rotating mechanism, a leveling mechanism, a clamping mechanism and an angle measuring mechanism, the top surface of the rotating mechanism is flush with the top surface of the mounting seat, the rotating mechanism is used for placing total station and driving the base of total station to rotate clockwise and counterclockwise, one end of the clamping mechanism is connected with the mounting seat, the other end can flexibly clamp the telescope of total station, the telescope and the clamping mechanism are relatively stationary and have a certain clearance, the leveling mechanism is located at the bottom of the mounting seat and can adjust the height and inclination angle of the mounting seat, the angle measuring mechanism is coaxially installed on the rotating mechanism and can measure the true value of rotation of total station and output data, and an error calibration part comprises a collimator and a collimator mounting rack, the collimator is located at the top of the collimator mounting rack, and the collimator is used for eliminating the rotation error of total station.

[0006] In one or more embodiments, the rotating mechanism comprises a power part and a rotating part, the rotating part comprises a rotating table, a vertical shaft and a worm gear, the rotating table is flush with the top end of the mounting base, the worm gear and the rotating table are coaxially installed on the vertical shaft, the vertical shaft is used for installing the angle measuring mechanism, and the worm gear can drive the vertical shaft and the rotating table to rotate synchronously; the power part comprises a shaft coupling, a motor connecting plate, a servo motor and a primary-secondary anti-backlash worm, one end of the motor connecting plate is installed on the side of the mounting base, the other end is used for installing the servo motor, one end of the primary-secondary anti-backlash worm is connected with the servo motor through the shaft coupling, and the other end is engaged with the worm gear; the primary-secondary anti-backlash worm can be driven to rotate by the servo motor and drive the worm gear to rotate.

[0007] In one or more embodiments, the leveling mechanism comprises three adjustable legs, the adjustable legs can adjust the inclination angle of the mounting base, so that the mounting base can adapt to different environments, and the top end of the mounting base is provided with a leveling bubble, which can be used to confirm that the mounting base is in a horizontal state.

[0008] In one or more embodiments, the angle measuring mechanism comprises an angle measuring code disc, which is coaxially installed on the vertical shaft.

[0009] In one or more embodiments, the mounting base is internally provided with a cavity for accommodating the rotating mechanism, one side of the mounting base is provided with a first mounting groove for connecting the motor connecting plate, and the other side of the mounting groove is provided with a second mounting groove, and the first mounting groove and the second mounting groove can fix the primary-secondary anti-backlash worm.

[0010] The utility model provides a kind of automatic verification tool for total station one measurement horizontal direction, total station is installed on the rotating table that can freely rotate, rotating table, worm gear and vertical shaft are coaxially installed, angle measuring code disc is equipped on vertical shaft, and the angle true value of rotating table rotation can be measured.Servo motor can drive primary-secondary anti-backlash worm, and then drive worm gear cooperating with primary-secondary anti-backlash worm to rotate, realize the electric rotation of total station.The telescope of total station is fixed flexibly by clamping mechanism, in the process of rotation, by slight swing, torsion influence caused by the installation of total station and rotating table not being coaxial absolutely in the process of rotation can be eliminated.By setting collimator, the angle deviation caused by slight swing of total station in each measurement position can be measured, by angle deviation value and the angle measurement value obtained by each measurement position of total station, angle true value is calculated.Computer receives angle deviation value, angle measurement value, and calculates measurement true value, by comparison with the angle true value measured by angle measuring code disc, standard deviation can be calculated, to verify whether the measurement data of total station is reliable, to provide convenience for the verification of total station. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a structural diagram of an automatic calibration tool for horizontal direction of one measuring cycle of a total station provided in the embodiments of the present application.

[0012] Fig. 2 is a detailed structural diagram of an automatic calibration tool for horizontal direction of one measuring cycle of a total station provided in the embodiments of the present application.

[0013] Main figure mark explanation:

[0014] 1-measuring part, 11-mounting seat, 12-rotary mechanism, 121-rotation part, 1211-turntable, 1212-vertical shaft, 1213-worm wheel, 122-power part, 1221-coupling, 1222-motor connecting plate, 1223-servo motor, 1224-primary and secondary anti-backlash worm, 13-leveling mechanism, 14-clamping mechanism, 15-angle measuring mechanism, 2-error calibration part, 21-self-collimating optical tube, 22-self-collimating optical tube mounting rack. DETAILED DESCRIPTION

[0015] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

[0016] Unless otherwise explicitly indicated, throughout the specification and claims, the term "comprise" or its variants such as "comprises" or "comprising" will be understood to encompass the stated element or component, but not to exclude the presence of other elements or additional components.

[0017] An automatic calibration tool for horizontal direction of one measuring cycle of a total station, as shown in Figs. 1-2The measurement unit 1 includes a mounting base 11, a rotating mechanism 12, a leveling mechanism 13, a clamping mechanism 14, and an angle measurement mechanism 15. The top surface of the rotating mechanism 12 is flush with the top surface of the mounting base 11. The rotating mechanism 12 is used to place the total station and drive the base of the total station to rotate clockwise and counterclockwise. One end of the clamping mechanism 14 is connected to the mounting base 11, and the other end can flexibly clamp the telescope of the total station. The telescope and the clamping mechanism 14 are relatively stationary and have a certain clearance. The leveling mechanism 13 is located at the bottom of the mounting base 11 and can adjust the height and inclination angle of the mounting base 11. The angle measurement mechanism 15 is coaxially installed on the rotating mechanism 12 and can measure the true value of the rotation of the total station and output data. The error calibration unit 2 includes a collimator 21 and a collimator mounting rack 22. The collimator 21 is located at the top of the collimator mounting rack 22. The collimator 21 is used to eliminate the rotation error of the total station.

[0018] Specifically, the total station is coaxially placed on the top of the rotating mechanism 12 and rotates synchronously with the rotating mechanism 12. The clamping mechanism 14 is located at the side end of the rotating mechanism 12 and can keep the telescope horizontal and the observation position unchanged. That is, the measurement angle of the total station is only related to the rotation angle of the rotating mechanism 12. The clamping mechanism 14 can be flexibly connected with the telescope. Since the telescope and the rotating mechanism 12 cannot be completely coaxial, if rigidly clamped during rotation, the telescope and the base are easily affected by torsion, causing damage to the instrument. In the case of correct installation of the total station, the flexible clamping of the clamping mechanism 14 can make the telescope slightly swing with the rotation of the base during the rotation of the total station, so that the displacement of the telescope adapts to the displacement of the base. The clamping mechanism 14 can also limit the installation position of the total station and assist the correct installation of the total station. As a preferred embodiment, the collimator 21 is installed horizontally. The automatic calibration tool for the horizontal direction of the total station measurement unit also includes a data analysis unit that can receive and analyze the data input by the measurement unit 1. The data analysis unit includes a computer. The data analysis unit is electrically connected with the error calibration unit 2 and the measurement unit 1, and can realize the transmission of electrical signals and measurement information.

[0019] As an optional embodiment, the rotating mechanism 12 comprises a power part 122 and a rotating part 121, the rotating part 121 comprises a rotating table 1211, a vertical shaft 1212 and a worm gear 1213, the rotating table 1211 is flush with the top end of the mounting base 11, the worm gear 1213 and the rotating table 1211 are coaxially installed on the vertical shaft 1212, the vertical shaft 1212 is used for installing the angle measuring mechanism 15, the worm gear 1213 can drive the vertical shaft 1212 and the rotating table 1211 to rotate synchronously; the power part 122 comprises a shaft coupling 1221, a motor connecting plate 1222, a servo motor 1223 and a primary-secondary anti-backlash worm 1224, one end of the motor connecting plate 1222 is installed on the side of the mounting base 11, the other end is used for installing the servo motor 1223, one end of the primary-secondary anti-backlash worm 1224 is connected with the servo motor 1223 through the shaft coupling 1221, the other end is engaged with the worm gear 1213, the primary-secondary anti-backlash worm 1224 can be driven to rotate by the servo motor 1223, and the worm gear 1213 is driven to rotate.

[0020] Specifically, the servo motor 1223 can automatically rotate to a plurality of preset calibration positions, the rotating table 1211 is located at the top of the rotating part 121, as an optional embodiment, the rotating table 1211 is flush with the top of the mounting base 11 or slightly protrudes from the mounting base 11, so that the total station can be conveniently installed, and dust and other impurities are prevented from entering from the gap between the rotating table 1211 and the mounting base 11. The motor connecting plate 1222 is provided with a through hole, and the servo motor 1223 can be installed on the mounting base 11 by cooperation with a bolt. As an optional embodiment, the servo motor 1223 is installed outside the mounting base 11. The mounting base 11 is provided with a cavity 111, and the rotating part 121 and the primary-secondary anti-backlash worm 1224 are located in the cavity 111 of the mounting base 11. The rotation of the servo motor 1223 is transmitted to the primary-secondary anti-backlash worm 1224 through the shaft coupling 1221, so that the primary-secondary anti-backlash worm 1224 and the servo motor 1223 rotate at the same frequency. The primary-secondary anti-backlash worm 1224 drives the worm gear 1213 to rotate. Compared with using a gear, the cooperation of the primary-secondary anti-backlash worm 1224 and the worm gear 1213 can eliminate the influence of gear backlash on instrument zero return, and higher measurement accuracy can be provided.

[0021] As an optional embodiment, the leveling mechanism 13 comprises three adjustable legs, the adjustable legs can adjust the inclination angle of the mounting base 11, so that the mounting base 11 can adapt to different environments, and the top end of the mounting base 11 is provided with a leveling bubble, which can be used to confirm that the mounting base 11 is in a horizontal state.

[0022] Specifically, the adjustable support is preferably three, which can realize the accurate adjustment of the angle with the least use of the support leg, and the operation steps are simple. The top of the mounting seat 11 is provided with a bubble, and the bubble can be used to determine whether the mounting seat 11 is adjusted to a horizontal state. The bubble can also be a level, which transmits the inclination angle of the mounting seat 11 into the computer. The mounting seat 11 is horizontal, and is used to adapt to the autocollimator light pipe 21 for horizontal measurement.

[0023] As an optional embodiment, the angle measuring mechanism 15 comprises an angle measuring code disc coaxially installed on the vertical shaft 1212.

[0024] Specifically, the angle measuring code disc is coaxially installed on the vertical shaft 1212.

[0025] As an optional embodiment, the mounting seat 11 is internally provided with a cavity 111 for accommodating the rotating mechanism 12, one side of the mounting seat 11 is provided with a first mounting groove 112, the first mounting groove 112 is used for connecting the motor connecting plate 1222, the other side of the mounting groove is provided with a second mounting groove 113, and the first mounting groove 112 and the second mounting groove 113 can fix the primary and secondary anti-backlash worm 1224.

[0026] Specifically, one end of the primary and secondary anti-backlash worm 1224 is fixed on the motor connecting plate 1222 through the shaft coupling 1221, indirect connection with the first mounting groove 112 is realized, and the other end is installed on the second mounting groove 113, and the position of the primary and secondary anti-backlash worm 1224 can be limited through the first mounting groove 112 and the second mounting groove 113.

[0027] Embodiment two:

[0028] The use method of the automatic detection tool for the horizontal direction of the total station one measurement return of the utility model is as follows:

[0029] S1: start the total station, the electronic control system and the autocollimator light pipe 21, and ensure that all devices are in a to-be-detected state;

[0030] S2: the turntable 1211 is located at zero position, and the total station and the autocollimator light pipe 21 are also placed at zero position;

[0031] S3: the high-precision turntable 1211 is rotated clockwise to the first detection position, the true value of the rotation angle is read through the built-in code disc of the turntable 1211 and is transmitted to the data analysis part, the autocollimator light pipe 21 synchronously records the offset angle of the detected total station and transmits the offset angle to the data analysis part, and the total station reads the rotation angle and transmits the rotation angle to the data analysis part;

[0032] S4: Repeat the above steps, check the 2, 3,..., n position until the regression zero position;

[0033] S5: telescope flip 180°, high-precision turntable 1211 counterclockwise rotation, repeat the above checking process;

[0034] S6: the original angle reading value recorded by the total station is corrected by the recorded value of the autocollimator 21, and the corrected angle measurement value is obtained;

[0035] S7: the corrected total station angle measurement value and the angle true value recorded by the high-precision turntable 1211 are calculated to obtain the measurement difference, and the standard deviation is obtained; according to the measurement difference, the standard deviation is calculated, and it is automatically judged whether the total station needs to be calibrated.

[0036] Wherein, the n is 23, at each check position, the autocollimator 21 can measure the angle deviation of the total station caused by slight swing at each measurement position, through the angle deviation value, and the angle measurement value obtained by the total station at each measurement position, the data analysis part can calculate the measurement true value by receiving the angle deviation value and the angle measurement value. By comparing the measurement true value with the angle true value measured by the angle encoder disc, the standard deviation can be calculated to check whether the measurement data of the total station is reliable.

[0037] The starting data analysis part includes starting the measurement computer and starting the measurement calculation software; the starting autocollimator 21 includes connecting the power cord and connecting the data analysis part with the data line; the starting total station includes determining that the total station is in the power-on state and connecting the data analysis part.

[0038] Wherein, the total station, the autocollimator 21 and the angle encoder disc input the measurement data into the data analysis part after each measurement, and the data analysis part analyzes and calculates the measurement error through the calculation software.

[0039] The turntable 1211 is placed at zero position, including leveling the mounting seat 11 and keeping the mounting seat 11 level bubble centered; the total station is placed at zero position, including leveling the total station installation foot, coaxially installing the total station base and the turntable 1211, and clamping the total station telescope by the clamping mechanism 14; the autocollimator 21 is placed at zero position, including installing the autocollimator 21 on the autocollimator 21 base, adjusting the autocollimator mounting frame 22 to make the autocollimator 21 horizontal and align the cross hair of the total station telescope.

[0040] The installation feet of the total station are leveled, which can avoid the deviation of the shaft and the rotating shaft of the total station, resulting in measurement error. The eccentricity of the total station is too large during the calibration process, which can cause damage to the instrument. As a preferred embodiment, the heights of the installation feet of the total station are all zeroed. In order to adapt to the height of the autocollimator 21, the heights of the installation feet can also be the same, as long as the horizontal bubble of the total station is kept centered. The clamping mechanism 14 can ensure that the observation direction of the telescope of the total station is horizontal. The clamping mechanism 14 is provided with a clamping groove. When the telescope of the total station is fixed on the clamping mechanism 14, the base of the total station is coaxial with the turntable 1211. The autocollimator 21 and the telescope of the total station are horizontal and have the same height, and the autocollimator 21 can face the crosshair of the total station.

[0041] The automatic determination of whether the total station needs to be calibrated includes comparing the calculated standard deviation with a preset standard.

[0042] The preset standard is the requirement of the national calibration regulation JJG100-2003, which is convenient for pre-delivery calibration of the total station and calibration of the total station to be qualified during use.

[0043] By adopting the above technical scheme, an automatic calibration tool for the horizontal direction of one measurement of the total station is provided. The total station is installed on a turntable 1211 which can rotate freely. The turntable 1211, the worm gear 1213 and the vertical shaft 1212 are coaxially installed. The vertical shaft 1212 is provided with an angle encoder disc, which can measure the angle true value of the rotation of the turntable 1211. The servo motor 1223 can drive the primary-secondary anti-backlash worm 1224, and then drive the worm gear 1213 cooperating with the primary-secondary anti-backlash worm 1224 to rotate, thereby realizing the electric rotation of the total station. The telescope of the total station is flexibly fixed by the clamping mechanism 14. During the rotation process, the torque influence caused by the installation of the total station and the turntable 1211 which cannot be absolutely coaxial can be eliminated through slight swinging. By setting the autocollimator 21, the angle deviation of the total station caused by slight swinging at each measurement position can be measured. Through the angle deviation value and the angle measurement value obtained by the total station at each measurement position, the angle true value can be calculated. The computer receives the angle deviation value and the angle measurement value to calculate the measurement true value. Through comparison with the angle true value measured by the angle encoder disc, the standard deviation can be calculated to determine whether the measurement data of the total station is reliable, thereby providing convenience for the calibration of the total station.

[0044] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. An automatic calibration tool for a total station performing a single horizontal measurement, characterized in that, include: The measuring unit includes a mounting base, a rotating mechanism, a leveling mechanism, a clamping mechanism, and an angle measuring mechanism. The top surface of the rotating mechanism is flush with the top surface of the mounting base. The rotating mechanism is used to mount the total station and drive the base of the total station to rotate clockwise and counterclockwise. One end of the clamping mechanism is connected to the mounting base, and the other end can flexibly clamp the telescope of the total station, so that the telescope and the clamping mechanism are relatively stationary and have a certain amount of play. The leveling mechanism is located at the bottom of the mounting base and can adjust the height and tilt angle of the mounting base. The angle measuring mechanism is coaxially mounted on the rotating mechanism and can measure the true value of the rotation of the total station and output the data. The error calibration unit includes an autocollimator and an autocollimator mounting bracket. The autocollimator is located on top of the autocollimator mounting bracket and is used to eliminate the rotation error of the total station.

2. The automatic calibration tool for a total station's horizontal direction measurement in one pass as described in claim 1, characterized in that, The rotary mechanism includes a power unit and a rotating unit. The rotating unit includes a turntable, a vertical shaft, and a worm gear. The turntable is flush with the top of the mounting base. The worm gear and the turntable are coaxially mounted on the vertical shaft. The vertical shaft is used to mount the angle measuring mechanism. The worm gear can drive the vertical shaft and the turntable to rotate synchronously. The power unit includes a coupling, a motor connecting plate, a servo motor, and a backlash-free worm gear. One end of the motor connecting plate is mounted on the side of the mounting base, and the other end is used to mount the servo motor. One end of the backlash-free worm gear is connected to the servo motor through the coupling, and the other end meshes with the worm wheel. The backlash-free worm gear can be driven to rotate by the servo motor, which in turn drives the worm wheel to rotate.

3. The automatic calibration tool for a total station's horizontal direction measurement in one pass as described in claim 1, characterized in that, The leveling mechanism includes three adjustable feet, which can adjust the tilt angle of the mounting base to adapt it to different environments. The top of the mounting base is provided with a leveling bubble, which can be used to confirm that the mounting base is in a horizontal state.

4. An automatic calibration tool for a total station's horizontal direction measurement in one pass, as described in claim 2, characterized in that... The angle measuring mechanism includes an angle measuring code disk, which is coaxially mounted on the vertical axis.

5. An automatic calibration tool for a total station's horizontal direction measurement in one pass, as described in claim 2, characterized in that... The mounting base has a cavity inside for accommodating the rotary mechanism. One side of the mounting base has a first mounting groove for connecting the motor connecting plate. The other side of the mounting groove has a second mounting groove. The first mounting groove and the second mounting groove can fix the backlash-free worm gear.

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