High-speed motor train unit body three-dimensional dimension detection method
A technology for a high-speed EMU and a detection method, which is applied to measurement devices, instruments, etc., can solve the problems of the complex shape of the body and various components, and the detection accessibility of the inspection tools cannot meet the fast and high-precision measurement requirements of the high-speed EMU.
Inactive Publication Date: 2016-03-16
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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[0002] The body and components of high-speed EMUs have complex shapes. During the measurement process, a large amount of three-dimensional dimension data of the body (such as the deflection value of the car body, the maximum width and half-width value of the car body, etc.) need to be extracted. Due to problems such as detection accessibility, distance meters cannot meet the rapid and high-precision measurement requirements in the production of high-speed EMU car bodies.
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[0020] 1. Design and testing auxiliary tooling
[0021] refer to Figure 1-4 , Some inspection points are in special positions and cannot be directly observed with a total station, and tooling needs to be designed to assist in the inspection. Auxiliary tooling for detection includes auxiliary tooling for vehicle side beam width detection, auxiliary tooling for vehicle body length detection, auxiliary tooling for vehicle height detection, and auxiliary tooling for detection benchmarks.
[0022] 2. Detection data collection
[0023] refer to Figure 5 , according to the vehicle detection map, with the detection auxiliary tooling, the detection base station is established at the diagonal position of the first and second positions of the vehicle to be tested, and a single device is used to change stations for detection.
[0024] 2.1 Reference Figure 4 , using the detection reference auxiliary tooling to set the detection reference at the visible position of the two detection ...
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Disclosed is a high-speed motor train unit body three-dimensional dimension detection method. The method comprises the following steps: according to a vehicle detection item point, making an auxiliary tool so as to cooperate with a total station to finish measurement of contour dimension of a body; establishing detection base stations at diagonal positions of a first position end and a second position end of a vehicle to be detected, two reference point targets are arranged at an area which can be observed from the two base stations, a measurement reference is determined, and performing station conversion detection by use of a single device; a right-hand rectangular coordinate system O2X2Y2Z2 is established, and coordinate system conversion is carried out; and an actual dimension of each detection item point is obtained through calculation. According to the invention, semi-automatic detection of the three-dimensional dimension of the vehicle is realized, the detection data is rapidly processed, and a detection result is instantly output; the method provided by the invention fills the blank of a high-speed motor train unit vehicle overall three-dimensional dimension detection technology in China; and vehicle overall three-dimensional detection technical support is provided for research and development and production of a rail vehicle.
Description
technical field [0001] The invention relates to a method for detecting the three-dimensional dimension of a car body, which is applied to the detection of the three-dimensional dimension of the car body in the manufacturing process of high-speed EMUs, and evaluates whether the car body meets the accuracy requirements for subsequent assembly and on-line operation. Background technique [0002] The body and components of high-speed EMUs have complex shapes. During the measurement process, a large amount of three-dimensional dimension data of the body (such as the deflection value of the car body, the maximum width and half-width value of the car body, etc.) need to be extracted. Due to problems such as detection accessibility, distance meters cannot meet the rapid and high-precision measurement requirements in the production of high-speed EMU car bodies. Contents of the invention [0003] The invention discloses a method for detecting three-dimensional dimensions of a vehicl...
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IPC IPC(8): G01B21/04
CPCG01B21/04
Inventor 曲双王雷王佳音
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD