CN-122015700-A - Automatic contour degree inspection device for large vehicle body part

Abstract

The invention discloses an automatic contour degree inspection device for a large vehicle body part, and belongs to the technical field of contour inspection of large vehicle body parts. The technical problem to be solved is that the degree of automation is low, the detection efficiency is low, the measurement result depends on manual visual reading, and the measurement data is inaccurate. The technical scheme is characterized in that the upper part of a detection template is fixed on a template fixing frame, a plurality of measuring devices are slidably arranged on the template fixing frame at intervals, a sliding locating block is connected with the template fixing frame and can transversely slide on the template fixing frame, a distance measuring module is arranged on a sliding connecting plate and is connected with the sliding locating block, the sliding locating block transversely limits the sliding connecting plate, the sliding connecting plate can longitudinally slide on the sliding locating block, and the distance measuring module can measure the distance between the outline of a large part of a vehicle body to be detected and the standard outline.

Inventors

• ZHANG DONG
• GAO RONG
• LI AN
• CHANG LI
• ZHUANG JUN
• GAO XUN
• HE XIAOYU
• ZHANG XIAOJIE
• LIU LIXI
• LI SHUOHAN
• ZHOU HAIPENG
• GUO GUIHANG
• HAN MEILING
• LIU YAGANG

Assignees

• 河北京车轨道交通车辆装备有限公司
• 北京市基础设施投资有限公司

Dates

Publication Date

20260512

Application Date

20260317

Claims (10)

1. 1. The automatic contour degree checking device for the large vehicle part is characterized by comprising a detection template, a template fixing frame and a plurality of measuring devices; The outline of the lower part of the detection template is drawn according to the standard outline of the large part of the vehicle body; the upper part of the detection template is fixed on the template fixing frame, and a plurality of measuring devices are slidably arranged on the template fixing frame at intervals; the measuring device comprises a shell, a ranging module, a sliding connecting plate, a sliding positioning block, a first knob and a second knob, wherein the first knob and the second knob are arranged on the shell; The sliding positioning block is connected with the template fixing frame, can transversely slide on the template fixing frame and is fixed through the second knob; The distance measuring module is arranged on the sliding connecting plate, the sliding connecting plate is connected with the sliding positioning block, the sliding positioning block transversely limits the sliding connecting plate, and the sliding connecting plate can longitudinally slide on the sliding positioning block and is fixed through the first knob; the distance measuring module can measure the distance between the outline of the large part of the vehicle body to be measured and the standard outline from the bottom of the shell.
2. 2. The automatic contour degree inspection device for large vehicle parts according to claim 1, wherein the outer surfaces of the inspection templates contacted with the template fixing frame are flush, threaded holes are formed in the inspection templates and the template fixing frame, and the inspection templates and the template fixing frame are fastened and connected through template fixing bolts.
3. 3. The automatic contour degree inspection device for the large vehicle part according to claim 1, wherein a long chute is formed in the middle of the template fixing frame, the measuring device is matched with the long chute, and a chute opening is formed in the end portion of the template fixing frame and used for disassembling and assembling the measuring device.
4. 4. The automatic contour degree inspection device for large vehicle parts according to claim 1, wherein the measuring device is provided with a threaded hole, the inspection template is provided with a long chute, the measuring device can move on the inspection template, and the measuring device and the inspection template are fastened and connected through a device fixing bolt.
5. 5. The automatic contour degree inspection device for large car body parts according to claim 1, wherein the shell comprises a first shell and a second shell which are connected with each other, the first shell is provided with a first knob mounting opening, the first knob is in contact with the sliding connection plate through the first knob mounting opening, the second shell is provided with a second knob mounting opening, the sample plate fixing frame is provided with a long smooth groove, and the second knob passes through the long smooth groove of the sample plate fixing frame through the second knob mounting opening and is in threaded connection with the sliding positioning block.
6. 6. The automatic contour degree inspection device for the large car body parts according to claim 5 is characterized in that a large cylinder and a small cylinder hole are further formed in the first shell, a threaded countersunk round hole matched with the large cylinder is formed in the sliding positioning block, a threaded small cylinder matched with the small cylinder hole is formed in the second shell, the first shell and the second shell are fixedly connected with the threaded small cylinder on the second shell through shell fixing bolts, the first shell and the sliding positioning block are fixedly connected with the countersunk round hole of the sliding positioning block through sliding block fixing bolts, a digital tube electronic screen is further arranged on the first shell, and the digital tube electronic screen is embedded into the limiting structure.
7. 7. The automatic checking device for the profile of the large vehicle body part according to claim 6, wherein the measuring device comprises a plurality of sets of infrared laser ranging modules, the sliding connection plate is connected with the digital tube electronic screen, the infrared laser ranging modules are further connected with a PLC data acquisition system, the distances between the profile of the large vehicle body part to be detected and the standard profile measured by the infrared laser ranging modules are analyzed and calculated, the measuring device further comprises a gravity acceleration sensor, and when the gravity acceleration sensor detects that the angle of the detection template reaches a preset standard, the measuring data are locked.
8. 8. The automatic contour degree inspection device for large vehicle body parts according to claim 7, wherein the slide connection plate is provided with a screw hole, the infrared laser ranging module is fixed on the slide connection plate by a module fixing bolt, and the second housing is fixed on the slide connection plate by a module housing fixing bolt.
9. 9. The automatic contour degree inspection device for large car body parts according to claim 8, wherein a sliding groove is formed in the middle of the sliding positioning block, the sliding connection plate is transversely limited and can longitudinally move in the sliding groove, a round hole is formed in the middle of the sliding positioning block, a long round sliding groove is formed in the sliding connection plate, the first knob penetrates through the long round sliding groove and is screwed into a threaded hole in the sliding positioning block, the sliding connection plate is fixed, and after the first knob is unscrewed, the sliding connection plate can longitudinally adjust in the sliding groove of the sliding positioning block, so that the position of the infrared laser ranging module is adjusted.
10. 10. The automatic contour degree inspection device for large car body parts according to claim 9, wherein the sliding positioning blocks are provided with protrusions up and down, the protrusions limit the sliding positioning blocks to slide transversely in the long round sliding grooves of the template fixing frame, and the template fixing frame limits the longitudinal positions of the sliding positioning blocks.

Description

Automatic contour degree inspection device for large vehicle body part Technical Field The invention relates to the technical field of contour detection of large parts of vehicle bodies, in particular to an automatic contour degree inspection device for large parts of vehicle bodies. Background In the production of rail transit vehicles, the outer contour of the vehicles is ensured to meet the standard requirements, and the rail transit vehicle is a foundation for safe passing of the rail transit vehicles, no invasion of rail limit and good appearance. However, the welding deformation of the welded rail vehicle is a common problem, and in order to ensure the outer contour of the vehicle body, the contour degree is firstly detected after the welding of the components, and a precise and convenient detection means is adopted in the detection process, so that an accurate data basis is provided for the shape adjustment work of the subsequent vehicle body components. At present, after the automatic welding of the large part of the car body is finished, most of used profile detection templates are aluminum alloy thin plates, the large part of the car body needs to be bent manually to the vicinity of a part to be detected, and then visual reading is carried out by using a steel plate ruler to carry out manual measurement. The body part measurement data are many, and the human body is located uncomfortable gesture, intensity of labour when measuring, and rail vehicle big part width all exceeds 2m simultaneously, and the deformation data in middle zone is difficult to measure and the operation is inconvenient, and the misleading measurement personnel leads to the mistake reading easily to influence measurement accuracy and increase measuring error, finally will influence the accent shape of follow-up body part outline dimension. The existing common aluminum alloy sample plate is low in structural strength, cannot be held by a single person, and usually needs two persons to cooperate for use when measuring long and large parts with larger widths, wherein one person visually measures and counts, and the other person supports the sample plate in an auxiliary manner, so that the operation process is very inconvenient. In the prior art, the measurement steps are realized by two sample plates, a single person bends over to lie prone on a workpiece for measurement, after manual visual reading, measurement data are filled in a paper plate measuring meter, then the next data analysis can be carried out, and further, the out-of-tolerance position of the profile of the vehicle body part is found, and the out-of-tolerance position is adjusted and repaired. The existing measurement technology has the following defects: 1. The technical structure is simple, only one aluminum alloy sample plate and 150mm plate ruler for laser blanking are adopted, the distance from a workpiece measuring point to the outline of the sample plate needs to be manually measured by using the steel plate ruler in the measuring process, the degree of automation is low, the detection efficiency is low, the measuring result depends on manual visual reading, and the accuracy of measuring data is not good. 2. When measuring the long and large part of aluminum alloy automobile body, part position is limited by structure, space influence, and manual measurement operation is inconvenient, and measurement process human gesture is comfortable low, and measurement personnel need lie prone to the work piece on the measurement reading of bowing, and another alone assists the support model. 3. The personnel's demand is more (need two at least people to cooperate the use, and one of them alone is prone to the work piece on measure the reading, and another alone assists the support model), and cost of labor is man-hour with high costs. 4. In order to ensure the strength of the template and facilitate manual holding during the design, an additional supporting structure besides the contour of the template needs to be designed, so that the template is enlarged, and more materials need to be used. 5. When the existing template is inclined, errors can be generated when the template ruler is manually used for measuring the size, and the adjustment and repair judgment of the aluminum alloy car body are affected. Disclosure of Invention The invention aims to provide that: An automatic checking device for the profile of a large part of a vehicle body and a related technology thereof are provided, so as to solve the technical problems of lower automation degree, low detection efficiency, inaccurate measurement data due to the fact that a measurement result depends on manual visual reading, and the like, or the combination thereof. The invention is convenient for installation and operation and replacement, and can adapt to the automatic laser inspection device for the profile of the vehicle body parts of various vehicle types. Description of the terminology: Unless defined otherwis