CN-121650717-B - Automatic track-changing inspection vehicle and track-changing method

CN121650717BCN 121650717 BCN121650717 BCN 121650717BCN-121650717-B

Abstract

The invention relates to the technical field of railway inspection vehicles, in particular to an automatic track-changing inspection vehicle and a track-changing method. The inspection vehicle comprises a vehicle frame, a guide wheel set and a target track, wherein the vehicle frame is provided with travelling wheels, the extending direction of the track is defined as the front-rear direction, the guide wheel set comprises guide wheels positioned on the left side and the right side of the vehicle frame, the guide wheels are used for being abutted with corresponding side tracks to guide the vehicle frame to move, the guide wheels are arranged on the vehicle frame through a longitudinal and transverse moving mechanism, the longitudinal and transverse moving mechanism comprises a transverse moving mechanism and a longitudinal moving mechanism, the guide wheels are driven by the longitudinal and transverse moving mechanism to transversely move and lift, when the vehicle frame moves to a turnout area, the guide wheels are abutted with the target track to guide the vehicle frame to the target track, and the travelling wheels are provided with a set wheel width so as to roll to the target track when the guide wheels are abutted with the target track. The invention effectively solves the technical problems that the inspection vehicle in the prior art needs manual intervention in the switch area to change the switch, the detection efficiency is low, and the stability and the precision cannot be considered.

Inventors

GAO YAJIE
GUO CHAORAN
LI XINYI
YANG ZIRUI
LIANG XIAO
CUI YUETONG
AN QI
Jia Xianwen

Assignees

石家庄铁道大学

Dates

Publication Date: 20260508
Application Date: 20260205

Claims (7)

1. The utility model provides an automatic become rail inspection car, includes the frame, is equipped with the walking wheel that is used for rolling on the track on the frame, defines the extending direction of track as fore-and-aft direction, its characterized in that still includes: the guide wheel set comprises guide wheels positioned at the left side and the right side of the frame, the guide wheels are used for being abutted with corresponding side rails to guide the frame to move, and the guide wheels are arranged on the frame through a longitudinal and transverse moving mechanism; the vertical and horizontal moving mechanism comprises a transverse moving mechanism for driving the guide wheel to move horizontally and a longitudinal moving mechanism for driving the guide wheel to vertically lift, and the guide wheel is driven by the vertical and horizontal moving mechanism to move horizontally and vertically so as to be abutted with a target track by the guide wheel when the frame moves to a turnout area and guide the frame to the target track; the travelling wheel is provided with a set wheel width so as to roll to a target track when the guide wheel is abutted against the target track; The walking wheel is a flat wheel, and the tread width of the walking wheel is not less than the maximum distance between the switch rail and the original track in the turnout area; the longitudinal moving mechanism comprises a plurality of longitudinal air cylinders, and the telescopic end of each longitudinal air cylinder is connected with one guide wheel so as to independently drive the guide wheel to lift; the transverse moving mechanism comprises at least two transverse air cylinders which are arranged in opposite directions, the cylinder body of the transverse air cylinder is fixedly arranged on the frame, and the telescopic end of the transverse air cylinder is connected with the longitudinal air cylinder; When the track is needed to be changed, the guide wheel on one side close to the rail point is controlled by the longitudinal and transverse moving mechanism to be separated from the original track and move towards the center of the frame until the guide wheel is positioned on the inner side of the rail point, and meanwhile, the guide wheel on the other side is controlled by the longitudinal and transverse moving mechanism to be lifted upwards until the bottom surface of the guide wheel is higher than the top surface of the original track by a preset height.
2. The automatic track-changing inspection vehicle according to claim 1, wherein the traversing mechanism is mounted on the frame and connected to the longitudinal moving mechanism, the guide wheel is connected to the longitudinal moving mechanism, so that the traversing mechanism drives the longitudinal moving mechanism and the guide wheel to move laterally left and right, and the guide wheel is driven by the longitudinal moving mechanism to vertically lift.
3. The automatic track-changing inspection vehicle according to claim 2, wherein a sliding rail is installed on the vehicle frame, a sliding frame is installed at the telescopic end of the transverse cylinder, the sliding frame is assembled on the sliding rail, and the longitudinal cylinders are installed at the front end and the rear end of the sliding frame.
4. The automatic rail-changing inspection vehicle according to claim 2, wherein air pressure sensors are arranged on air paths of the longitudinal air cylinder and the transverse air cylinder.
5. The automated track-change inspection vehicle of any one of claims 1 to 4, wherein switch identification modules are mounted on the carriage, the switch identification modules being provided on the front and rear sides of the carriage for identifying switch types and locating rail points.
6. An automatic rail changing method, characterized in that the automatic rail changing inspection vehicle of any one of claims 1 to 5 is adopted, and the method comprises the following steps: Among the guide wheels on the left side and the right side, the guide wheel on the same side as the rail point is a proximal guide wheel, the guide wheel on the opposite side of the rail point is a distal guide wheel, the longitudinal and transverse moving mechanism drives the proximal guide wheel to be abutted with a target track with the rail point, and meanwhile, the longitudinal and transverse moving mechanism drives the distal guide wheel to lift and separate from the original track so as to guide the inspection vehicle to finish rail changing in the rolling process of the travelling wheel, and after the rail changing is finished, the longitudinal and transverse moving mechanism drives the distal guide wheel to descend so as to be abutted with the target track.
7. The automatic derailment method of claim 6, wherein after derailment is completed, the vertically and horizontally moving mechanism first controls the distal guide wheel to descend above the top surface of the target track at a speed v 1 , and then controls the distal guide wheel to descend into contact with the inside of the target track at a speed v 2 , v 1 ﹥v 2 .

Description

Automatic track-changing inspection vehicle and track-changing method Technical Field The invention relates to the technical field of railway inspection vehicles, in particular to an automatic track-changing inspection vehicle and a track-changing method. Background In the long-term high-load service process, the rail is subjected to the comprehensive effects of repeated impact, natural environment erosion and material fatigue of the train, various defects and faults are gradually generated, namely, the rail is easy to generate fatigue cracks, tread wear, rust, rail head stripping and the like, the switch is used as a core weak link, the faults of point rail abrasion, frog deformation, loosening or falling off of connecting pieces and the like are frequently generated, the sleeper is likely to generate cracking and breakage conditions, the ballast bed is easy to settle and harden to cause deviation of geometric parameters (height, level and track gauge) of the rail, and meanwhile, the rail joint is also likely to generate the conditions of bolt loosening, gap increasing and the like, if the problems are not treated in time, the vibration of the train body, the running stability influence, even the serious safety accidents such as derailment and the like are aggravated. Traditional rail detects and mainly uses artifical inspection, has inefficiency, human input and detects the unmatched problem of coverage, and detection quality relies on inspection personnel specialty level and operating condition, easily receives objective factors influences such as fatigue, weather, light, leads to testing result inconsistent, is difficult to comprehensive accurate investigation potential safety hazard. For this purpose, patent document CN120270283B discloses a rail inspection vehicle comprising a vehicle body, a detection mechanism and a control box. The device comprises a vehicle body, a detection mechanism, a control box and a detection mechanism, wherein wheels for walking on rails are arranged on the vehicle body, the detection mechanism is arranged on two sides of the vehicle body and positioned between two adjacent wheels on the same side, the detection mechanism comprises a mounting seat, a high-speed camera and an ultrasonic flaw detection wheel, the mounting seat is connected with the vehicle body, the ultrasonic flaw detection wheel and the high-speed camera are both arranged on the mounting seat, the ultrasonic flaw detection wheel is used for rolling and walking on the surfaces of the rails, a photographing area is arranged on the mounting seat, the high-speed camera is used for photographing the rails of the photographing area, and the control box is connected with the detection mechanism. The inspection vehicle organically combines contact flaw detection with non-contact imaging to form a multidimensional data complementary mechanism, so that synchronous detection of surface and internal damage of a rail is realized, and the influence of human factors on detection quality is eliminated. However, in an actual railway network, the track includes not only straight and curved sections, but also switch areas that determine the course of the train. The inspection vehicle adopts a rim type wheel system, the contact between the rim and the inner side of the track is relied on to realize guiding, the inspection vehicle belongs to a passive guiding mode, when the inspection vehicle passes through a turnout zone, the walking path of the inspection vehicle is strictly limited by the fixed geometric configuration of the turnout, and the travelling track cannot be selected independently according to the requirement of a detection task. The mechanical characteristics have obvious technical problems in the actual use process, such as rigidification of path selection and low detection coverage rate. The inspection vehicle is provided with the detection mechanism, but the detection mechanism is only used for detecting the damage on the surface and the inside of the rail, and is irrelevant to the track change, and the inspection vehicle can only travel along a preset single track direction at the turnout. If the full-coverage detection of all tracks in the turnout area is required to be completed, the manual intervention or a complex scheduling system is required to carry out vehicle movement or path planning, so that the continuity and efficiency of detection operation are severely restricted, and particularly, for the throat area, marshalling stations and section stations of the stations with dense turnout area distribution, frequent movement of the inspection vehicle is required, and the manual movement of the inspection vehicle is difficult to adapt to the operation and maintenance requirements of short skylight time and heavy detection tasks of high-density driving lines. Therefore, how to break through the path limitation of the existing rim-type guiding inspection vehicle, so that the automatic, stable and accurate tra