CN-118501170-B - Concrete crack discernment dolly

CN118501170BCN 118501170 BCN118501170 BCN 118501170BCN-118501170-B

Abstract

The invention discloses a concrete crack identification trolley, which belongs to the technical field of concrete crack detection and comprises an identification assembly, a reinforcing assembly and a fixing assembly, wherein the identification assembly comprises a laser beam emitter and a photoelectric sensor which are arranged at the bottom of the trolley, the reinforcing assembly comprises a track which is arranged at the bottom of the trolley, a sliding block piece is slidably arranged on the track, the photoelectric sensor is arranged on the sliding block piece, a fixing column is arranged at the bottom of the trolley, a reflecting piece is rotatably arranged on the fixing column and is in transmission connection with the sliding block piece, the sliding block piece drives the reflecting piece to rotate, the fixing assembly comprises a limiting piece and an unlocking piece, the limiting piece is arranged on the reflecting piece and is used for fixing the reflecting piece, the unlocking piece is elastically arranged in the reflecting piece, and the unlocking piece is simultaneously in transmission connection with the limiting piece and the sliding block piece. The reflection piece of the adding component is fixed through the fixing component, so that the reflection piece can be kept stable in a horizontal state and a vertical state, and the reflection piece is prevented from shaking when the trolley moves.

Inventors

JIA DONG
ZHANG LIANG
ZHANG BOWEN
FAN ZHIYONG
CHENG XUEJUN
Zhou Tailu
Que Peizhong
WANG SHIJUN
LI GAOFENG
LI PINGFENG
YANG GUODANG

Assignees

华能西藏雅鲁藏布江水电开发投资有限公司

Dates

Publication Date: 20260512
Application Date: 20240328

Claims (6)

1. A concrete crack identification trolley, comprising: An identification assembly (100) comprising a laser beam emitter (101) and a photoelectric sensor (102) arranged at the bottom of the trolley; the reinforcing assembly (200) comprises a track (201) arranged at the bottom of the trolley, a sliding block piece (202) is slidably arranged on the track (201), the photoelectric sensor (102) is arranged on the sliding block piece (202), a fixed column (203) is arranged at the bottom of the trolley, a reflecting piece (204) is rotatably arranged on the fixed column (203), the reflecting piece (204) is in transmission connection with the sliding block piece (202), and the sliding block piece (202) drives the reflecting piece (204) to rotate; The fixing assembly (300) comprises a limiting piece (301) and an unlocking piece (302), wherein the limiting piece (301) is arranged on the reflecting piece (204), the limiting piece (301) is used for fixing the reflecting piece (204), the unlocking piece (302) is elastically installed in the reflecting piece (204), and the unlocking piece (302) is in transmission connection with the limiting piece (301) and the sliding piece (202) at the same time; the bottom of the trolley is provided with a first mounting groove, a first transmission column (207) is elastically mounted in the first mounting groove, a second mounting groove (203 a) is formed in the fixed column (203), a second transmission column (203 b) is elastically mounted in the second mounting groove (203 a), and the first transmission column (207) is in transmission connection with the second transmission column (203 b); The fixing column (203) is provided with a horizontally arranged mounting hole (203 c), the central axis of the mounting hole (203 c) is perpendicular to the length direction of the track (201), the reflecting piece (204) comprises a supporting column (204 a), the supporting column (204 a) is provided with a rotating shaft (204 b), the rotating shaft (204 b) penetrates through the mounting hole (203 c) and is rotationally connected with the mounting hole (203 c), the inside of the rotating shaft (204 b) is hollow and forms a mounting cavity (204 c), the outer circumferential wall of the rotating shaft (204 b) is provided with a through groove (204 d), the through groove (204 d) is communicated with the mounting cavity (204 c), the second transmission column (203 b) is suitable for penetrating through the through groove (204 d) and extending into the mounting cavity (204 c), and the supporting column (204 a) is also provided with a reflecting piece (204 e); The limiting piece (301) comprises an annular ratchet block (301 a), a third mounting groove (301 b) is formed in the fixing column (203), the annular ratchet block (301 a) is elastically mounted in the third mounting groove (301 b), a plurality of ratchets (301 c) are arranged on one side end face, close to the third mounting groove (301 b), of the supporting column (204 a), the ratchets (301 c) are uniformly arranged around the circumferential direction of the third mounting groove (301 b), and the ratchets (301 c) are clamped with the annular ratchet block (301 a); The unlocking piece (302) comprises an unlocking rod (302 a), the unlocking rod (302 a) is elastically installed in the installation cavity (204 c), a first wedge-shaped groove (302 b) is formed in the circumferential wall of the unlocking rod (302 a), the first wedge-shaped groove (302 b) is arranged around the circumferential direction of the unlocking rod (302 a), the second transmission column (203 b) is in contact with the first wedge-shaped groove (302 b), and the second transmission column (203 b) drives the unlocking rod (302 a) to slide towards the direction close to the track (201).
2. The concrete crack identification trolley according to claim 1, wherein the length direction of the track (201) is parallel to the travelling direction of the trolley, the sliding block piece (202) comprises a sliding block (202 a), the sliding block (202 a) is in sliding connection with the track (201), the photoelectric sensor (102) is arranged on the sliding block (202 a), the track (201) is provided with a clearance groove, the clearance groove is vertically arranged, the sliding block (202 a) is provided with a pressing block (202 b), the bottom of the trolley is provided with a cylinder (202 c), the cylinder (202 c) is in transmission connection with the pressing block (202 b), the pressing block (202 b) is in sliding connection with the clearance groove, and the cylinder (202 c) is suitable for driving the pressing block (202 b) to vertically move along the length direction of the clearance groove.
3. The concrete crack recognition trolley according to claim 2, wherein the reinforcement assembly (200) further comprises a transmission bar (205), the transmission bar (205) is arranged at the bottom of the trolley, the length direction of the transmission bar (205) is parallel to the length direction of the track (201), a tooth part (205 a) is arranged on the transmission bar (205), the sliding block piece (202) comprises a first gear (202 d) rotatably arranged on the sliding block (202 a), and the first gear (202 d) is meshed with the tooth part (205 a).
4. A concrete crack recognition trolley as claimed in claim 3, characterized in that a second gear (202 e) is arranged on the sliding block (202 a), a third gear (204 f) is arranged on the rotating shaft (204 b), the second gear (202 e) is suitable for being meshed with the third gear (204 f), and the second gear (202 e) drives the rotating shaft (204 b) to rotate.
5. The concrete crack recognition trolley according to claim 4, wherein a clamping block (302 c) is elastically mounted on the circumferential wall of the unlocking lever (302 a), a clamping groove (302 d) is further formed on the outer circumferential wall of the rotating shaft (204 b), the clamping groove (302 d) is communicated with the mounting cavity (204 c), and the clamping block (302 c) is suitable for extending out of the clamping groove (302 d) and being clamped with the clamping groove (302 d).
6. The concrete crack recognition trolley according to claim 5, wherein the slider member (202) further comprises a cam (202 f) rotatably mounted on the slider (202 a), a base circle center of the cam (202 f) being located on a central axis of the second gear (202 e), the cam (202 f) comprising a first projection (202 f-1) and a second projection (202 f-2), the first projection (202 f-1) and the second projection (202 f-2) being arranged in central symmetry with respect to the base circle center of the cam (202 f), the first projection (202 f-1) and the second projection (202 f-2) each being adapted to abut against the fixture block (302 c), the first projection (202 f-1) and the second projection (202 f-2) being adapted to drive the fixture block (302 c) to retract into a mounting cavity (204 c) of the rotating shaft (204 b).

Description

Concrete crack discernment dolly Technical Field The invention relates to the technical field of concrete crack detection, in particular to a concrete crack identification trolley. Background Concrete crack identification refers to the detection and identification of cracks in the surface of a concrete structure by various technical means. Such identification is typically done to assess the health of the concrete structure, determine maintenance and repair requirements, and monitor crack development. The concrete crack recognition trolley is placed on the surface of the dam, and the trolley is used for inspecting the crack of the dam along the length direction of the dam. The laser beam emitter and the photoelectric sensor are both in the prior art, details are omitted, when the laser beam emitter is aligned to the target ground, the laser beam emitter emits a beam of laser, part of the laser beam irradiates a crack on the surface of the target, the laser beam is reflected back to the photoelectric sensor, the position and the width of the crack can be determined by detecting the intensity and the position of a reflected signal, the photoelectric sensor is sensitive to light, the measurement of the photoelectric sensor can be interfered under the condition of insufficient light, the reflection of the laser is enhanced by using the reflecting sheet in the measuring process, so that the reflected signal of the laser can be captured better even if the light condition is poor, and the reflecting sheet is high in reflectivity generally, so that the measuring accuracy can be improved. It is noted that the reflective sheet needs to be properly placed at the position to be measured to ensure that an accurate reflected signal is obtained, and that the reflective sheet is usually mounted near the target surface to be measured in a direction perpendicular to the target surface, instead of being mounted at the position of the photoelectric sensor. The laser beam measuring device aims at enhancing the reflected signal of laser so as to improve the accuracy and the reliability of measurement, therefore, the situation of normal light and insufficient light needs to be considered, the reflecting sheet cannot be arranged in a fixed mode, the reflecting sheet needs to be designed to be movable, when the light is normal, the reflecting sheet needs to be stored, when the light is insufficient, the reflecting sheet needs to be unfolded, when the light is normal, only the laser beam emitter and the photoelectric sensor need to be fixed to the bottom of the trolley, the propagation track of the laser beam is fixed, but now the situation that the reflecting sheet needs to be perpendicular to the ground is considered, so that the laser beam reflected by the reflecting sheet does not reach the position of the original photoelectric sensor, and the position of the photoelectric sensor needs to be adjusted to receive the laser beam reflected by the reflecting sheet. Therefore, the reflective sheet has two states, namely, when the light is sufficient, the reflective sheet needs to be kept in a horizontal state, when the light is insufficient, the reflective sheet needs to be kept in a vertical state, and the reflective sheet is inevitably swayed in the moving process of the trolley. Disclosure of Invention This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application. The present invention has been made in view of the above-mentioned and/or existing problems with concrete crack recognition carts. Therefore, the present invention is directed to solving the problem of how to stabilize the reflective sheet in a horizontal or vertical state. The technical scheme includes that the concrete crack identification trolley comprises an identification component and a reinforcing component, wherein the identification component comprises a laser beam emitter and a photoelectric sensor which are arranged at the bottom of the trolley, the reinforcing component comprises a track which is arranged at the bottom of the trolley, a sliding block piece is slidably arranged on the track, the photoelectric sensor is arranged on the sliding block piece, a fixing column is arranged at the bottom of the trolley, a reflecting piece is rotatably arranged on the fixing column and is in transmission connection with the sliding block piece, the sliding block piece drives the reflecting piece to rotate, the fixing component comprises a limiting piece and an unlocking piece, the limiting piece is arranged on the reflecting piece and is used for fixing the reflecting piece, the unlocking piece is elastically arranged in the reflecting piece, and the unlocking piece is simultaneously in transm