CN-122016823-A - Contact net scanning equipment in tunnel

CN122016823ACN 122016823 ACN122016823 ACN 122016823ACN-122016823-A

Abstract

The invention relates to the technical field of rail transit monitoring and provides a tunnel inner contact net scanning device, which comprises a main body bracket, a main body and a main body, wherein the main body bracket is used for installing a contact net detection unit; the suspension walking device comprises an avoidance power mechanism, an avoidance seat, a swinging frame, a correction mechanism and a suspension wheel. When the equipment walks on the contact line, the correction mechanism adapts to the space trend change of the contact line through at least two contact positions, and when the extending direction of the contact line changes, the correction mechanism drives the swinging frame to rotate, so that the axis of the suspension wheel is always perpendicular to the vertical plane where the extending direction of the contact line section of the suspension wheel suspension position is located, the self-adaptation of the space trend change of the contact line is realized, the suspension wheel and the contact line keep a stable contact state, the problem that the contact state of the suspension wheel and the contact line is unstable is solved, and the reliability of detection data and the safety of equipment operation are improved.

Inventors

CHENG SEN
LI QINGYUN
WANG PENG
Xu Xianggeng
WANG HAILONG
CHEN KEYU
WANG ZHAOHAN
MA HAO

Assignees

中国铁建电气化局集团有限公司
中铁建电气化局集团第三工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. An in-tunnel catenary scanning device, comprising: The main body bracket is used for installing the contact net detection unit; The power device comprises a driving assembly and a power wheel, wherein the driving assembly is connected with the main body support and the power wheel, the driving assembly is used for driving the power wheel to rotate, the wheel surface of the power wheel is in contact fit with the contact line lower side of the contact line, and the power device comprises a main body support and a power wheel The suspension walking device comprises an avoidance power mechanism, an avoidance seat, a swinging frame, a correction mechanism and suspension wheels, wherein the avoidance seat is in sliding connection with the main body support, the avoidance power mechanism is connected with the main body support and the avoidance seat, the avoidance power mechanism is used for driving the avoidance seat to slide in a direction close to or far away from the contact line, the swinging frame is in rotary connection with the avoidance seat, the correction mechanism is arranged in the swinging frame and in contact with one side of the contact line in the horizontal direction and forms at least two contact positions arranged along the extending direction of the contact line, the contact positions are distributed on two sides of a rotating shaft of the swinging frame, and the suspension wheels are in rotary connection with the swinging frame and are in contact with the upper side of the contact line.
2. The in-tunnel catenary scanning apparatus of claim 1, wherein the correction mechanism comprises: The lateral positioning wheels are arranged at intervals, are connected with the swinging frame in a rotating mode, are in contact fit with the contact line to form a contact position, and are arranged on two sides of a rotating shaft of the swinging frame.
3. The in-tunnel catenary scanning apparatus of claim 2, wherein the correction mechanism further comprises: The extending direction of the correcting swing arm is parallel to the arrangement direction of the lateral positioning wheels, and the middle part of the correcting swing arm is fixedly connected with the swing frame; The device comprises a correction swing arm, a first elastic piece, a correction swing arm and a correction swing arm, wherein one end of the first elastic piece is connected with the avoidance seat, the other end of the first elastic piece is connected with the correction swing arm, two first elastic pieces are arranged at intervals and are respectively connected with two ends of the correction swing arm, and the two first elastic pieces are configured to provide elastic force in opposite directions for the correction swing arm.
4. A tunnel catenary scanning apparatus according to any one of claims 1 to 3, wherein the avoidance power mechanism comprises: the obstacle sensing unit is arranged on the main body bracket and is used for detecting whether an obstacle exists on the contact line or not and outputting an obstacle signal; The avoidance driving unit is connected with the main body support and the avoidance seat and is used for driving the avoidance seat to slide in a reciprocating manner; The avoidance control unit is respectively and electrically connected with the obstacle sensing unit and the avoidance driving unit, and is configured to control the avoidance driving unit based on the monitoring signal output by the obstacle sensing unit.
5. The in-tunnel catenary scanning apparatus according to claim 4, wherein the avoidance driving unit includes: a driving source installed in the main body bracket for providing driving force; The motion conversion mechanism is connected between the driving source and the avoidance seat and is used for converting the rotary motion of the driving source into linear motion of the avoidance seat relative to the main body bracket; the flexible connecting piece is connected between the motion conversion mechanism and the avoidance seat, and is used for allowing relative displacement between the motion conversion mechanism and the avoidance seat when the avoidance seat is blocked and storing elastic potential energy.
6. A tunnel catenary scanning apparatus according to any one of claims 1 to 3, wherein the drive assembly comprises: the mounting seat is connected with the main body bracket; the floating support is obliquely arranged, a first end of the floating support is rotationally connected with the mounting seat, the rotation axis of the floating support is parallel to the wheel shaft of the power wheel, and a second end of the floating support is connected with the wheel shaft of the power wheel; the driving motor is arranged at the second end of the floating bracket and is in transmission connection with the wheel shaft of the power wheel; The second elastic piece is connected with the mounting seat and the floating support and is configured to provide upward elastic force for the floating support so that the power wheel elastically presses the contact line.
7. The tunnel overhead line scanning equipment according to claim 6, wherein the mounting seat is rotatably connected with the main body support, the rotation axis of the mounting seat is perpendicular to the rotation axis of the floating support, the tread of the power wheel is provided with a groove, the groove is matched with the contour of the lower surface of the contact line, and the power wheel is matched with the contact line through the groove.
8. The in-tunnel catenary scanning apparatus of claim 7, wherein the drive assembly further comprises: The third elastic piece is connected with the mounting seat and the main body support and is configured to generate elastic deformation when the mounting seat and the main body support relatively rotate.
9. The in-tunnel contact network scanning apparatus of claim 8, wherein said drive assembly further comprises: The limiting structure is arranged between the mounting seat and the main body support, and comprises a first limiting part arranged on the mounting seat and a second limiting part arranged on the main body support, wherein the first limiting part and the second limiting part are oppositely arranged on a rotating path of the mounting seat and are used for limiting the rotating angle range of the mounting seat relative to the main body support.
10. A tunnel catenary scanning apparatus according to any one of claims 1 to 3, wherein the catenary detection unit comprises: the mechanical arm is arranged on the main body bracket; The vision guiding camera is arranged at the movable end of the mechanical arm and is used for collecting images of the part to be detected to identify characteristic points of the part to be detected; The contact sensor is arranged at the movable end of the mechanical arm and is used for contacting the contact line or the contact net component and acquiring a contact force signal; The laser range finder is arranged at the movable end of the mechanical arm and is used for measuring the distance between the contact sensor and the part to be measured; and the control module is respectively and electrically connected with the contact sensor, the vision guiding camera, the laser range finder and the mechanical arm.

Description

Contact net scanning equipment in tunnel Technical Field The invention relates to the technical field of rail transit monitoring, in particular to a scanning device for a contact network in a tunnel. Background With the rapid development of electrified railways and urban rail transit, the overhead contact system is taken as a core component of electric traction, and the geometric state of the overhead contact system is directly related to the safety and stability of train operation. In order to ensure reliable operation of the overhead contact system, the overhead contact system in the tunnel needs to be detected. In the related art, part of detection equipment adopts a suspension type structure, the equipment is suspended on a contact line through a suspension wheel, the power wheel is used for realizing walking along the line by contacting with the contact line, and a sensor is carried for monitoring the state of a contact network. However, the contact lines within the tunnel do not extend straight, but rather there is a change in the spatial profile depending on the line design. In the walking process of the existing suspension type detection equipment, the suspension wheels are difficult to adapt to the space trend change of the contact line, particularly, in the intersection position of two sections of contact lines, the adaptability of different suspension wheels to the two sections of contact lines is poor, the contact state of the equipment and the contact line is unstable, and the reliability of detection data and the operation safety of the equipment are easily influenced. Disclosure of Invention The invention provides a scanning device for an overhead line system in a tunnel, which is used for solving the problem that a hanging wheel is difficult to adapt to the space trend change of a contact line in the tunnel in the prior art. The invention provides a tunnel inner contact net scanning device which comprises a main body support, a power device and a suspension traveling device, wherein the main body support is used for installing a contact net detection unit, the power device comprises a driving assembly and a power wheel, the driving assembly is connected with the main body support and the power wheel, the driving assembly is used for driving the power wheel to rotate, the wheel surface of the power wheel is in contact fit with the lower side of a contact line of the contact net, the suspension traveling device comprises a avoidance power mechanism, a avoidance seat, a swinging frame, a correction mechanism and a suspension wheel, the avoidance seat is in sliding connection with the main body support, the avoidance power mechanism is connected with the main body support and the avoidance seat, the avoidance power mechanism is used for driving the avoidance seat to slide in a direction close to or far away from the contact line, the swinging frame is in rotary connection with the avoidance seat, the correction mechanism is arranged on the swinging frame and is in contact with one side of the contact line in the horizontal direction and forms at least two contact positions arranged along the extending direction of the contact line, the contact positions of the at least two contact positions are respectively arranged on two sides of a rotary shaft of the swinging frame, the swinging frame and the suspension wheel is connected with the swinging frame and the contact line is used for being in contact with the contact side. According to one embodiment of the invention, the correcting mechanism comprises lateral positioning wheels, wherein more than two lateral positioning wheels are arranged at intervals and are in rotary connection with the swinging frame, each lateral positioning wheel is in contact fit with the contact line to form a contact position, and more than two lateral positioning wheels are respectively arranged on two sides of the rotating shaft of the swinging frame. According to one embodiment of the invention, the correction mechanism further comprises correction swing arms, wherein the extending direction of the correction swing arms is parallel to the arrangement direction of the lateral positioning wheels, the middle parts of the correction swing arms are fixedly connected with the swing frame, one ends of the first elastic pieces are connected with the avoidance seat, the other ends of the first elastic pieces are connected with the correction swing arms, two first elastic pieces are arranged at intervals and respectively connected with the two ends of the correction swing arms, and the two first elastic pieces are configured to provide elastic force in opposite directions for the correction swing arms. According to one embodiment of the invention, the avoidance power mechanism comprises an obstacle sensing unit, an avoidance driving unit and an avoidance control unit, wherein the obstacle sensing unit is arranged on the main body support and is used for detecting whether an obst