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CN-121977453-A - Bridge construction bridge displacement detection equipment

CN121977453ACN 121977453 ACN121977453 ACN 121977453ACN-121977453-A

Abstract

The invention relates to bridge displacement detection equipment for bridge construction, and belongs to the technical field of bridge displacement detection. The device comprises a mounting frame, a screw rod bearing, a screw rod and a servo motor, wherein the mounting frame is fixed on the side face of a pier on a bridge body, the servo motor is fixed on the left side of the mounting frame, the laser displacement detector is arranged above the mounting frame, the screw rod bearing is connected in the mounting frame, and the left end of the screw rod is fixedly connected with the output end of the servo motor. This bridge construction bridge displacement check out test set drives through servo motor drive lead screw and removes seat and laser displacement detector, realizes the detection to bridge body multiposition, utilizes buffer spring and buffer magnet to realize dual shock attenuation, realizes self-adaptation shock attenuation through rack and driven gear, drives cleaning brush self-cleaning with the help of drive round platform and gyro wheel, and can realize clean self-adaptation regulation when laser displacement detector moves to the outside, guarantee detection precision.

Inventors

  • QI JIMING
  • YANG MING
  • MAO JIANFENG

Assignees

  • 鑫峰建设集团有限公司

Dates

Publication Date
20260505
Application Date
20260324

Claims (10)

  1. 1. The bridge displacement detection device for bridge construction comprises a mounting rack (3), wherein the mounting rack (3) is fixed on the side surface of a bridge pier on a bridge body (1), a servo motor (2) is fixed on the left side of the mounting rack (3), and a laser displacement detector (6) is arranged above the mounting rack (3); the laser transmission device is characterized by further comprising a screw rod (5), wherein the screw rod (5) is in bearing connection with the inside of the installation frame (3), the left end of the screw rod (5) is fixedly connected with the output end of the servo motor (2), a moving seat (9) is sleeved outside the screw rod (5), a fixed cylinder (8) is fixedly connected with the upper surface of the moving seat (9), a movable cylinder (7) is sleeved outside the fixed cylinder (8), the top of the movable cylinder (7) is fixedly connected with the bottom of the laser displacement detector (6) through a bolt, a piston block (11) is fixedly connected inside the fixed cylinder (8), a buffer spring (10) is installed between the top of the piston block (11) and the top of the inner wall of the movable cylinder (7), an adaptive damping adjusting component is arranged inside the moving seat (9) and the installation frame (3), a driven toothed ring (17) is rotationally connected above the inside the laser displacement detector (6), a cleaning brush (4) is symmetrically connected with the inner side surface of the driven toothed ring (17), a driving rod (15) is connected with a driving end (16) of the driving rod (15), a driving end (16) is connected with the driving end of the driving rod (15), the front of the inside of the installation frame (3) is provided with a fixing seat (19), the back of the fixing seat (19) is rotationally connected with rollers (18) at equal intervals, and the inside of the installation frame (3) and the laser displacement detector (6) is provided with a cleaning strength adjusting component.
  2. 2. The bridge construction bridge displacement detection device according to claim 1, wherein the driven toothed ring (17) is in meshed connection with the driving gear (16), opposite ends of the two cleaning brushes (4) are slidably arranged on the inner side surface of the driven toothed ring (17) through first sliding blocks, first springs are arranged between the tops of the first sliding blocks and the inner wall of the driven toothed ring (17), and bristles of the cleaning brushes (4) are attached to the mirror surface of the laser displacement detector (6).
  3. 3. The bridge construction bridge displacement detection device according to claim 1, wherein the bottom of the transmission rod (15) extends into the installation frame (3), the driving round table (14) is arranged in a shape with a wide upper part and a narrow lower part, and the driving round table (14) is contacted with the outer side of the roller (18).
  4. 4. The bridge construction bridge displacement detection device according to claim 1, wherein the self-adaptive damping adjustment assembly comprises a rack (1201), the rack (1201) is fixed at the rear of the inside of the installation frame (3), a first threaded rod (1203) is connected to the top penetrating bearing of the inner wall of the movable base (9), a driven gear (1202) is fixedly sleeved on the outer side of the lower end of the first threaded rod (1203), a threaded sleeve (1204) is sleeved on the outer side of the upper end of the first threaded rod (1203), a second threaded rod (1206) is symmetrically connected to the center point of the first threaded rod (1203) in the inside of the movable base (9), supporting plates (1207) are sleeved on the outer sides of the two second threaded rods (1206), the opposite faces of the two supporting plates (1207) are in transmission connection with the outer sides of the driven gear (1202) through a bevel gear set (1205), a vertical plate (1209) is fixedly connected to the left side and the right side of the bottom of the laser displacement detector (6), and a buffer magnet (1208) is arranged on the opposite faces of the vertical plate (1209) and the supporting plates (1207).
  5. 5. The bridge construction bridge displacement detection device according to claim 4, wherein the top end of the driven gear (1202) extends into the fixed cylinder (8), the outer side of the threaded sleeve (1204) is in sliding connection with the fixed cylinder (8) and the movable seat (9), a plurality of tooth blocks on the rack (1201) are distributed intermittently, and the rack (1201) is in meshed connection with the driven gear (1202).
  6. 6. The bridge construction bridge displacement detection device according to claim 4, wherein the outer sides of the two support plates (1207) are in sliding connection with the inner wall of the movable seat (9), and the magnetic poles of the buffer magnets (1208) on the support plates (1207) are the same as those of the opposite surfaces of the buffer magnets (1208) on the vertical plates (1209).
  7. 7. The bridge construction bridge displacement detection device according to claim 1, wherein the cleaning strength adjustment assembly comprises a guide plate (1301), the guide plate (1301) is fixedly connected to the front surface of the fixed seat (19), guide grooves (1306) are formed in the back surface of the guide plate (1301), pushing rods (1309) are arranged at equal intervals on the front surface of the guide plate (1301), wedge blocks (1302) are connected to the front surface of the movable seat (9) through bolts, attaching blocks (1310) are fixedly connected to the left side and the right side of the upper surface of the fixed seat (19), second sliding blocks are arranged on the left side and the right side of the fixed seat (19), second springs are arranged between the bottoms of the second sliding blocks and the inner walls of the mounting frame (3), third springs are arranged between the end portions of the second sliding blocks (1311) and the inner walls of the second sliding blocks, linkage plates (1303) are arranged on the left side and the right side of the laser displacement detector (6), a fixed ring (1307) is fixedly connected to the horizontal ends of the two plates (1303), and the fixed ring (1307) is symmetrically connected to the bottom of the fixed ring (1301308).
  8. 8. The bridge construction bridge displacement detection device according to claim 7, wherein the wedge block (1302) is arranged in an L-shape, and the vertical end of the wedge block (1302) is arranged obliquely.
  9. 9. The bridge construction bridge displacement detection device according to claim 7, wherein the moving block (1311) is fixedly connected with the side surface of the fixed seat (19) through bolts, the fixed seat (19) and the moving block (1311) are vertically and slidably connected with the inner wall of the installation frame (3) through a second sliding block, the guide groove (1306) is obliquely arranged, the end part of the pushing rod (1309) extends into the inner wall of the guide groove (1306), and the end part of the pushing rod (1309) is attached to the inclined surface of the guide groove (1306).
  10. 10. The bridge construction bridge displacement detection device according to claim 7, wherein the linkage plate (1303) is arranged in a '匚' shape, the horizontal end below the linkage plate (1303) is fixed on the outer side of the threaded sleeve (1204) through bolts, and the bottom of the connecting block (1308) is fixedly connected with the top of the cleaning brush (4).

Description

Bridge construction bridge displacement detection equipment Technical Field The invention relates to the technical field of bridge displacement detection, in particular to bridge displacement detection equipment for bridge construction. Background The laser displacement detector is based on a laser sensor, can detect various plane data, and the bridge is used as a core node of a traffic infrastructure, and displacement deformation (such as vertical deflection, horizontal deflection, support displacement and foundation settlement) in the construction stage is a core index for verifying design rationality, controlling construction quality and preventing safety risks. In the construction process, the bridge structure is required to bear dynamic loads such as cradle walking, segmental pouring, bracket pre-pressing, system conversion and the like, and is simultaneously influenced by environmental factors such as sudden temperature change, river surface gust, foundation consolidation, sunlight temperature difference and the like in a coupling way, so that instantaneous or cumulative displacement is easy to generate. If the micro displacement is not captured and early-warned in time, accidents such as section dislocation, support instability, main beam deflection and the like can be caused, so that construction period delay and economic loss are caused, and therefore, the high-precision and real-time displacement monitoring at the construction stage is particularly critical. At present, bridge construction displacement detection technology is mainly divided into five categories of contact measurement, optical measurement, satellite positioning, inertial sensing and computer vision, however, the existing bridge displacement detection equipment has the following defects in the actual use process: The vehicle passes through, construction machinery operation can produce continuous vibration, present equipment does not set up pertinence shock attenuation buffer gear, laser detection unit is easily disturbed by external vibration, lead to displacement data undulant big, the detection precision is low, can't guarantee the stability and the reliability of construction monitoring, the vibration amplitude of bridge cross-section intermediate region and outside edge of a wing, the frequency has apparent difference, the shock-absorbing structure of present equipment is mostly fixed parameter, can not follow the high sensitivity demand of detection position change self-adaptation adjustment buffer strength, be difficult to satisfy the high buffering demand in outside strong vibration district and middle steady district simultaneously, and construction site dust, water smoke, mud is liable to adhere to at laser detection window surface, long-term use can cause the light path to shelter from, signal attenuation, and present equipment does not possess automatic cleaning mechanism, need artifical periodic cleaning, not only maintenance is loaded down with trivial details, high altitude construction risk still can interrupt continuous detection process, although part has clean function's equipment, its clean dynamics, clean rotational speed is fixed mode, can't reduce clean intensity when vibration is great, reduce clean rotational speed, result in clean mechanism produces secondary disturbance under the strong vibration environment, further the vibration aggravate, serious influence detects displacement precision. Aiming at the problems, innovative design is urgently needed on the basis of the original design. Disclosure of Invention The invention aims to provide bridge construction bridge displacement detection equipment for solving the problems set forth in the background art, and provides a solution which is obviously different from the prior art aiming at the technical problem that the prior art is too single. The bridge displacement detection device for bridge construction comprises a mounting frame, wherein the mounting frame is fixed on the side face of a pier on a bridge body, a servo motor is fixed on the left side of the mounting frame, and a laser displacement detector is arranged above the mounting frame; the laser displacement detector also comprises a screw rod, the screw rod bearing is connected in the installation frame, the left end of the screw rod is fixedly connected with the output end of the servo motor, the outer side of the screw rod is sleeved with a threaded connection moving seat, the upper surface of the moving seat is fixedly connected with a fixed cylinder, the outer side of the fixed cylinder is sleeved with a sliding connection movable cylinder, the top of the movable cylinder is fixedly connected with the bottom of the laser displacement detector through a bolt, the inner part of the fixed cylinder is slidably connected with a piston block, a buffer spring is arranged between the top of the piston block and the top of the inner wall of the movable cylinder, the inside of removing seat and installin