CN-121977467-A - Laser measuring device for steel bar deformation

CN121977467ACN 121977467 ACN121977467 ACN 121977467ACN-121977467-A

Abstract

The invention provides a laser measuring device for steel bar deformation, which belongs to the technical field of laser measuring equipment and comprises a top cover frame arranged above a device base, wherein a detection cavity is formed between the device base and the top cover frame, a detection assembly comprises a grating light emitter and a grating light receiver which are used for detecting the steel bar deformation, the grating light emitter and the grating light receiver are arranged in the detection cavity and are positioned on two sides of the steel bar, a driving assembly is used for fixing the bottom end of the steel bar and driving the steel bar to rotate along the axis of the steel bar, and driving the grating light emitter and the grating light receiver to move along the axis of the steel bar for deformation detection, so that the full-section detection of rotary scanning and axial movement is formed, the relative offset between optical signal changes rather than between two sections is captured section by section, the problem that the traditional laser measuring device is easy to offset data is solved, the fixing assembly comprises two groups of clamping forks which are used for clamping the top ends of the steel bar, and lubrication assemblies used for lubricating the rotating joints of clamping rollers and supports are arranged on the clamping forks.

Inventors

CHANG HONGYAN
GAO QIANG
LI NING
WANG SHAOJIE
ZHANG HUIKAI
YUE YANG
Jing Yuehui
ZHANG HUAN
WANG XIAOYING
LIU SHENWEI
Kou Hongcheng

Assignees

山西华筑天成土木工程检测有限公司

Dates

Publication Date: 20260505
Application Date: 20260228

Claims (10)

1. A laser measuring device for steel bar deformation, comprising: The device comprises a device base, wherein the top of the device base is connected with a top cover frame through a plurality of groups of support columns and side plates, and a detection cavity is formed between the device base and the top cover frame; The detection assembly is arranged in the detection cavity and used for detecting the deformation of the steel bar to be detected, and comprises a grating light emitter and a grating light receiver which are arranged in the detection cavity and positioned at two sides of the steel bar to be detected; the driving assembly is arranged at the top of the device base and is used for fixing the bottom end of the steel bar to be tested, driving the steel bar to be tested to rotate along the axis of the driving assembly, and driving the grating light emitter and the grating light receiver to move along the axis of the steel bar to be tested to perform deformation detection; The fixing assembly is installed at the bottom of the top cover frame and comprises two groups of clamping forks used for clamping the top ends of the steel bars to be tested, two groups of clamping rollers are arranged on one side of each clamping fork and correspond to the rotation of the steel bars to be tested, and lubricating assemblies are arranged on the clamping forks and used for lubricating the joint of the clamping rollers and the support rotation.
2. The laser measuring device for steel bar deformation according to claim 1, wherein: the driving assembly comprises a fixed seat, a placing seat is arranged at the top of the device base, a rotating hole is formed in the top of the placing seat, the fixed seat is arranged in the rotating hole in a penetrating mode, and the top end of the fixed seat and the top surface of the placing seat are located on the same horizontal plane; The bottom of the fixing seat is provided with a worm wheel, the top of the device base is also provided with a worm and a servo motor, the worm wheel is meshed with the worm, the top end of the servo motor is connected with a first bevel gear, one end of the worm is connected with a second bevel gear, the first bevel gear is connected with the second bevel gear through a bevel gear structure, the worm and the bevel gear are structurally provided with a first bearing seat, and the bottom of the first bearing seat is connected with the device base.
3. A laser measuring device for steel bar deformation according to claim 2, wherein: The top of the fixing seat is provided with a fixing groove, the periphery of the fixing seat is provided with three groups of sliding through grooves communicated with the fixing groove, the three groups of sliding through grooves are respectively and slidably connected with a fixing rod, three groups of fixing clamping blocks used for fixing the bottom end of a steel bar to be tested are arranged in the fixing groove, one side of each fixing clamping block is provided with a hinging seat, and one end of each fixing rod penetrates through the corresponding sliding through groove and is connected with the hinging seat through a shaft pin; One end of the fixed rod, which is far away from the fixed clamping block, is provided with a pulling seat, the periphery of the fixed seat is also provided with a first mounting groove corresponding to the three groups of sliding through grooves, two groups of hook seats are arranged in the first mounting groove and on one side of the pulling seat, and clamping springs are arranged between the two groups of hook seats.
4. A laser measuring device for steel bar deformation according to claim 2, wherein: The bottom of the fixed seat and the bottom of the worm wheel are provided with through holes, the bottom of the fixed seat is provided with two groups of guide posts, a push-out position positioned in the fixed groove or a withdrawal linkage cover positioned below the fixed seat is connected between the two groups of guide posts in a sliding manner, the top of the linkage cover is provided with a sliding inclined plane, the bottom ends of the two groups of guide posts are provided with limiting blocks, and the top of the device base is provided with a first electric telescopic rod for jacking the withdrawal linkage cover to the push-out position; When the linkage cover is positioned at the ejection position, the top of the linkage cover passes through the through hole and is positioned at the same horizontal plane with the top surface of the placement seat, three groups of fixed clamping blocks move to a position far away from the center of the fixed groove along the sliding inclined plane, and one side of each fixed clamping block is contacted with the periphery of the linkage cover; When the linkage cover is positioned at the withdrawal position, the top of the linkage cover and the bottom of the fixed groove are positioned at the same horizontal plane, and the three groups of fixed clamping blocks move to the center of the fixed groove to fix the steel bars to be measured.
5. The laser measuring device for steel bar deformation according to claim 4, wherein: The driving assembly further comprises two groups of rotating rings which are distributed up and down, the top of the device base is provided with two groups of mounting bottom shells, the tops of the two groups of mounting bottom shells are respectively provided with an arc-shaped bearing plate, and the two groups of arc-shaped bearing plates are respectively clamped between the two groups of rotating rings; The two groups of rotating rings are respectively sleeved with a ring seat, a plurality of groups of positioning seats are arranged on the periphery sides of the two groups of rotating rings, balls are respectively arranged on the plurality of groups of positioning seats, two groups of second connecting seats are arranged on the inner side of one group of ring seats, and the two groups of second connecting seats are respectively connected with the two groups of first connecting seats through two groups of shaft shoulder bolts.
6. A laser measuring device for steel bar deformation according to claim 2, wherein: The detection assembly further comprises a lifting screw rod for driving the grating light receiver and the grating light emitter to move to a detection upper dead center or a detection lower dead center along the axis of the steel bar to be detected, the bottom end of the lifting screw rod is connected with the first bevel gear, the top end of the lifting screw rod is connected with a second bearing seat, the second bearing seat is arranged on one side of one group of support columns, a lifting mounting beam is sleeved on the lifting screw rod, a mounting frame is arranged on one side of the lifting mounting beam, and the grating light receiver and the grating light emitter are respectively arranged on one side of the lifting mounting beam adjacent to the mounting frame; The top of the lifting installation beam is provided with a first light pipe sensor, the bottom of the lifting installation beam is provided with a second light pipe sensor, the bottom of the placing seat is provided with a first sensing rod, and the bottom of the fixing component is provided with a second sensing rod; when the grating light receiver and the grating light emitter are positioned at the detection top dead center, the second sensing rod is positioned in the sensing part of the first light pipe sensor; When the grating light receiver and the grating light emitter are positioned at the detection bottom dead center, the first sensing rod is positioned in the sensing part of the second light pipe sensor, and the grating light receiver, the grating light emitter, the lifting mounting beam and the top surface of the mounting frame are all positioned on the same horizontal plane with the top surface of the placing seat.
7. The laser measuring device for steel bar deformation according to claim 6, wherein: one side of one group of support columns is also provided with four groups of installation seats, two groups of lifting guide rods parallel to the axis of the lifting screw rod are respectively arranged between the four groups of installation seats, two groups of lifting sliding holes are formed in the lifting installation beam, and the two groups of lifting guide rods are respectively connected with the two groups of lifting sliding holes in a sliding manner; Two groups of dustproof light shielding plates are arranged at the bottom of the placement seat, and when the grating light receiver and the grating light emitter are positioned at the detection bottom dead center, the sensing parts of the grating light receiver and the grating light emitter are respectively contacted with the two groups of dustproof light shielding plates; One side of the placement seat is provided with a protection plate.
8. The laser measuring device for steel bar deformation according to claim 6, wherein: The fixing assembly further comprises a mounting plate, the top cover frame top is provided with a second electric telescopic rod, the bottom end of the second electric telescopic rod is connected with the mounting plate, the bottom of the mounting plate is provided with a second induction rod, one side of the mounting plate is provided with two groups of linear modules oppositely, one adjacent ends of the two groups of linear modules are connected with the double-shaft motor, the slide block of each linear module is provided with a connecting arm, one side of the clamping fork is provided with a clamping opening, and the other side of the clamping fork is provided with a third connecting seat connected with the connecting arm; the clamping opening is arc, and clamping opening top and bottom all symmetry are provided with two sets of rotation seats, and two sets of clamping rollers rotate with two sets of rotation seats respectively and are connected.
9. The laser measuring device for steel bar deformation according to claim 8, wherein: The two groups of side plates are respectively provided with a mounting bracket, the two adjacent sides of the two groups of mounting brackets are respectively provided with a sliding guide rail, the two ends of the mounting plates are respectively provided with a fourth connecting seat which is connected with the sliding blocks, and the two groups of sliding blocks are respectively in sliding connection with the two groups of sliding guide rails; And a rotating ring is arranged between the rotating seat and the clamping roller.
10. The laser measuring device for steel bar deformation according to claim 8, wherein: the lubricating assembly comprises an oil tank, a second mounting groove is formed in the top of the connecting arm, the oil tank is mounted in the second mounting groove, an oil delivery pump and an oil filling port are arranged at the top of the oil tank, and a sealing cover is arranged on the upper cover of the oil filling port; An oil injection cavity is arranged in the clamping roller, an oil outlet communicated with the oil injection cavity is formed in the periphery of the clamping roller, an oil injection pipe communicated with the oil injection cavity is arranged at the top of the clamping roller, a rotating seat is arranged on the oil injection pipe, an oil distribution pipe is respectively connected with the two groups of rotating seats in a rotating mode through two groups of rotating joints, and an oil outlet end of an oil delivery pump is connected with the oil distribution pipe through the oil pipe.

Description

Laser measuring device for steel bar deformation Technical Field The invention belongs to the technical field of laser measuring equipment, and particularly relates to a laser measuring device for steel bar deformation. Background In the fields of civil engineering and building construction, the steel bars are used as core bearing members, the form integrity and the mechanical property of the steel bars are directly related to the safety and the stability of the whole structure, and the deformation of the steel bars such as bending, local bulge and the like is required to be detected. The existing steel bar deformation detection mode mainly comprises manual visual inspection, caliper measurement, dial indicator contact detection and the like, and the traditional means gradually transition to a semi-automatic and optical detection direction along with the expansion of engineering scale and the improvement of detection precision requirements; according to the method, according to the refraction principle of light, as long as the laser is located at the position of the maximum bending degree of the steel bar, laser emitted by the laser vertically penetrates through the scale ring and intersects with the scale ring, and then the deformation of the steel bar is obtained through the deflection angle of the scale ring and the laser, but the conventional laser measuring device is used for obtaining the deformation of the steel bar by sleeving the laser unit and the measuring unit on the same side of the ring, the cross section of the scale ring is of a hemispherical shell structure, and the deformation data of the steel bar is difficult to obtain when the deformation of the steel bar is obtained only by the deflection angle of the scale ring and the measuring unit between the scale ring and the measuring unit, and the deformation of the steel bar is difficult to obtain when the deformation of the steel bar is obtained by the deflection unit between the scale ring and the measuring unit. Disclosure of Invention In order to solve the technical problems, the invention provides a laser measuring device for steel bar deformation, which is used for solving the technical problems that in the prior art, the traditional laser measuring device can only detect the deformation of a steel bar section between a laser unit and a measuring unit, when the laser unit and the measuring unit are sleeved on the deformation section of the steel bar, the relative deformation between the two deformation sections is acquired, the actual deformation of a single section of the steel bar is difficult to acquire, and the measured deformation data is deviated. The invention discloses a laser measuring device for steel bar deformation, which is characterized by comprising the following specific technical means: A laser measuring device for steel bar deformation, comprising: The device comprises a device base, wherein the top of the device base is connected with a top cover frame through a plurality of groups of support columns and side plates, and a detection cavity is formed between the device base and the top cover frame; The detection assembly is arranged in the detection cavity and used for detecting the deformation of the steel bar to be detected, and comprises a grating light emitter and a grating light receiver which are arranged in the detection cavity and positioned at two sides of the steel bar to be detected; the driving assembly is arranged at the top of the device base and is used for fixing the bottom end of the steel bar to be tested, driving the steel bar to be tested to rotate along the axis of the driving assembly, and driving the grating light emitter and the grating light receiver to move along the axis of the steel bar to be tested to perform deformation detection; The fixing assembly is installed at the bottom of the top cover frame and comprises two groups of clamping forks used for clamping the top ends of the steel bars to be tested, two groups of clamping rollers are arranged on one side of each clamping fork and correspond to the rotation of the steel bars to be tested, and lubricating assemblies are arranged on the clamping forks and used for lubricating the joint of the clamping rollers and the support rotation. According to a preferred embodiment, the driving assembly comprises a fixed seat, a placing seat is arranged at the top of the device base, a rotating hole is formed in the top of the placing seat, the fixed seat is arranged in the rotating hole in a penetrating mode, and the top end of the fixed seat and the top surface of the placing seat are located on the same horizontal plane; The bottom of the fixing seat is provided with a worm wheel, the top of the device base is also provided with a worm and a servo motor, the worm wheel is meshed with the worm, the top end of the servo motor is connected with a first bevel gear, one end of the worm is connected with a second bevel gear, the first bevel gear is conne