CN-121994933-A - Accurate measurement step distance device for ultrasonic detection of foundation filling pile

CN121994933ACN 121994933 ACN121994933 ACN 121994933ACN-121994933-A

Abstract

The invention discloses an accurate step distance measuring device for ultrasonic detection of a foundation filling pile, which belongs to the technical field of building detection and comprises a foundation with a rack at the top, a filling pile body, a hoisting mechanism and a moving mechanism, wherein the filling pile body is arranged in the foundation, two sounding pipes are arranged in the filling pile body, the hoisting mechanism is arranged on the rack, and the moving mechanism is arranged on the rack. This foundation bored concrete pile ultrasonic detection's accurate measurement step device promotes measurement accuracy and reliability through the use of supporting positioning mechanism, realizes automatic centering and prevents shaking, fundamentally solves the probe in traditional method and rocks in the sounding pipe, the measuring error problem that the decentration leads to, driving motor, synchronous ring gear, bracing piece, anti-skidding arc piece cooperation, makes a plurality of bracing pieces radially jack up sounding pipe inner wall in step, the radial tight sounding pipe inner wall of constant speed, forces to detect the installation piece and centers in the pipe automatically, suppresses the swing of probe in the test process, ensures ultrasonic wave propagation path's stability.

Inventors

Xiong Mengyao
FENG JIANJIAN
LI KE
YUAN HAN
XIAO WENLIN
PENG HUANHUAN
GU BAOXIANG
Gu Xizhong
ZHOU YUXI
YANG KUN
ZHANG JIANYUN

Assignees

深圳市勘察研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20260203

Claims (10)

1. An accurate measurement step device for ultrasonic detection of a foundation filling pile, which is characterized by comprising: A foundation (1) with a rack (13) at the top; The device comprises a filling pile body (2), wherein the filling pile body (2) is arranged in a foundation (1), and two sounding pipes (3) are arranged in the filling pile body (2); The hoisting mechanism is arranged on the rack (13); The moving mechanism is arranged on the rack (13) and comprises a control part, a chute (12) and a sliding block (10), wherein the chute (12) is arranged at the inner top of the rack (13), the sliding block (10) is connected in the chute (12) in a sliding way, the control part is arranged on the rack (13), and the control part is connected with the sliding block (10); The detection mechanisms are provided with two groups, the two groups of detection mechanisms are arranged on the hoisting mechanism, each group of detection mechanisms are arranged in each sound tube (3), each group of detection mechanisms comprises a detection installation block (16) and an ultrasonic wave emission receiver (19), the detection installation blocks (16) are arranged on the hoisting mechanism, and the ultrasonic wave emission receivers (19) are arranged in the detection installation blocks (16); The support positioning mechanism is provided with two groups, each group of support positioning mechanism is arranged in each detection installation block (16), each group of support positioning mechanism comprises a positioning component and a supporting rod (17), the positioning component is arranged in each detection installation block (16), the supporting rods (17) are provided with a plurality of supporting rods (17) which are connected in the detection installation blocks (16) in an equal-distance sliding manner, the supporting rods (17) are connected with the positioning component, and one end of each supporting rod (17) is fixedly connected with an anti-skid arc block (26); The grating rulers (25) are provided with a plurality of grating rulers (25), the grating rulers (25) are fixedly connected in the detection installation block (16) at equal intervals, and each grating ruler (25) is connected with each supporting rod (17).
2. The accurate measurement step distance device for ultrasonic detection of foundation cast-in-place piles of claim 1, wherein the hoisting mechanism comprises: The first hoisting component is arranged on the rack (13) and is connected with one of the detection installation blocks (16); The second hoisting component is arranged on the rack (13) and is connected with the other detection installation block (16).
3. The ultrasonic detection accurate measurement step distance device for the foundation filling pile according to claim 1, wherein the first hoisting component comprises a first winch (4), a first fixed pulley (6) and a first steering pulley (11), the first winch (4) is fixedly connected to the bottom of one side of the outer surface of the bench (13), the first fixed pulley (6) is rotatably connected to one side of the top of the bench (13), and the first steering pulley (11) is installed at the bottom of the sliding block (10).
4. The accurate measuring step distance device for ultrasonic detection of foundation cast-in-place piles according to claim 1, wherein the second hoisting component comprises a second winch (5), a second fixed pulley (7) and a second steering pulley (14), the second winch (5) is fixedly connected to the bottom of one side of the outer surface of the stand (13), the second fixed pulley (7) is rotatably connected to one side of the top of the stand (13), and the second steering pulley (14) is installed at the edge of one side of the top of the stand (13).
5. The ultrasonic detection accurate measurement step device for the foundation filling pile according to claim 1, wherein the control part comprises a positioning motor (8) and a threaded rod (9), the positioning motor (8) is fixedly connected to one side of the inner top of the rack (13), the threaded rod (9) is rotatably connected to the sliding groove (12), one end of the threaded rod (9) is fixedly connected to the output end of the positioning motor (8), and the threaded rod (9) is in threaded connection with the sliding block (10).
6. The accurate measurement step device for ultrasonic detection of foundation cast-in-place piles according to claim 1, wherein the positioning component comprises: The power assembly is arranged in the detection mounting block (16); And the synchronous component is arranged in the detection mounting block (16), is connected with the power component and is connected with the plurality of support rods (17).
7. The accurate measuring step distance device for ultrasonic detection of foundation cast-in-place piles according to claim 1, wherein the power assembly comprises a driving motor (23) and a driving gear (24), the driving motor (23) is fixedly connected in the detection mounting block (16), and the driving gear (24) is fixedly connected to the output end of the driving motor (23).
8. The accurate measuring step distance device for ultrasonic detection of foundation filling piles according to claim 1, wherein the synchronous assembly comprises a synchronous toothed ring (22), a transmission gear (21) and driven racks (27), the synchronous toothed ring (22) is rotatably connected in the detection mounting block (16), the synchronous toothed ring (22) is meshed with the driving gear (24), the transmission gear (21) is provided with a plurality of transmission gears (21) which are equally spaced and rotatably connected in the detection mounting block (16), the plurality of transmission gears (21) are meshed with the synchronous toothed ring (22), the driven racks (27) are provided with a plurality of driven racks (27) which are fixedly connected to each supporting rod (17), and each driven rack (27) is meshed with each transmission gear (21).
9. The accurate step distance measuring device for ultrasonic detection of foundation filling piles according to claim 1, further comprising two groups of protection mechanisms, wherein each group of protection mechanisms is arranged on each detection installation block (16), each group of protection mechanisms comprises a lifting rod (18) and a protection cover (15), the lifting rods (18) are arranged in a plurality, the lifting rods (18) are fixedly connected to the tops of the detection installation blocks (16) at equal intervals, the protection covers (15) are movably sleeved on the detection installation blocks (16), and the protection covers (15) are fixedly connected to the output ends of the lifting rods (18).
10. The accurate measuring step distance device for ultrasonic detection of foundation filling piles according to claim 1, wherein a battery (20) is fixedly connected to the position, close to the bottom, in the detection installation block (16).

Description

Accurate measurement step distance device for ultrasonic detection of foundation filling pile Technical Field The invention belongs to the technical field of building detection, and particularly relates to an accurate step distance measuring device for ultrasonic detection of a foundation filling pile. Background In construction engineering, bridge engineering and large-scale infrastructure construction, foundation filling pile is used as the main form of deep foundation, the reliability of pile forming quality is directly related to the safety and stability of the whole structure, and an ultrasonic transmission method is a core method for detecting the integrity of the filling pile because of the comprehensive detection range and visual and reliable result. At present, the main method for obtaining the pipe spacing on site is that a tape measure is used for manually measuring the distance between the outer walls of two sound measuring pipes at the pipe orifice of the pile top, then the inner wall spacing is calculated according to the pipe diameter, and the value is used as a constant spacing value in the depth range of the whole pile body for calculation. However, this approach has significant inherent drawbacks: 1. At present, the pipe distance measuring device does not exist, the traditional tape is generally used for measuring in the field detection, the tape is bent, the reading parallax is affected, the error is large, two persons are needed to cooperate, the tape is drawn in a pause mode point by point, the efficiency is low, the data quality is recorded manually, errors are easy to occur, and the data are discrete; 2. In the construction processes of binding and fixing pile reinforcement cages, concrete pouring and vibrating and the like, the acoustic measurement pipe is extremely easy to generate local bending, tilting or displacement, so that the distance at the pipe orifice of the pile top cannot represent the interior of the pile body at all, especially the actual pipe distance at different depths, and the single measurement result of the top is used for calculating the full pile depth, thereby introducing systematic reference errors; 3. At different depths of the pile body, the pipe spacing may vary nonlinearly due to construction disturbance, uneven soil pressure and the like. The existing method can not acquire the dynamic distance data which changes along with the depth, so that the defect depth is positioned inaccurately; 4. In order to ensure the signal quality, the transducer is required to be positioned at the center position in the acoustic tube during detection, the traditional method is supported by a centralizer or a simple spring of the probe, the centering effect is unstable and is easily influenced by rough tube wall, slurry adhesion or probe swing, the probe eccentricity can change the actual propagation path of ultrasonic waves, extra acoustic measurement errors are introduced, and the errors are mutually coupled with the tube spacing errors, so that the detection accuracy is further reduced. Disclosure of Invention The invention aims to realize automatic centering and anti-shake by using a supporting and positioning mechanism, improve the measurement precision and reliability, fundamentally solve the problem of measurement errors caused by shaking and decentering of a probe in a sounding pipe in the traditional method, drive a motor, a synchronous toothed ring, a supporting rod and an anti-slip arc block to match, synchronously and uniformly radially push against the inner wall of the sounding pipe by a plurality of supporting rods, force a detection mounting block to be automatically centered in the pipe, inhibit the swinging of the probe in the test process, ensure the stability of an ultrasonic propagation path, abandon an indirect mode of calculating the pipe distance by a grating ruler, realize real-time, in-situ and direct accurate measurement of the pipe distance by relying on a pre-measurement or theoretical value, directly measure the extension displacement of the supporting rods, add displacement data of the two supporting rods to obtain accurate clear distance between the inner walls of the two pipes at the depth section, directly measure the accuracy of pile body integrity judgment, improve the detection efficiency and operation automation degree by using the lifting mechanism, realize one-time and multi-point automatic measurement, reduce manual intervention, improve the operation speed and consistency, independently control the two groups of the probe at the same measuring system, realize the two-level synchronous and intermittent measurement, realize the two-stop of the two-stop devices at the same level, and change of the same level of the sounding pipe by the measuring system, and the same-stop device, and realize the automatic measurement of the two-stop devices by the same level, and change of the measuring device, the mud and sundries are prevented from ent