CN-224231525-U - Concrete strength detection device

CN224231525UCN 224231525 UCN224231525 UCN 224231525UCN-224231525-U

Abstract

The application provides a concrete strength detection device which comprises a shell and a guide sleeve, wherein the guide sleeve is elastically connected with the shell, a force sensor and a displacement sensor are arranged in the shell at intervals, a probe is arranged in the guide sleeve, the end part of the probe, which is far away from the shell, penetrates through the guide sleeve, the end part of the probe, which is close to the shell, is connected with the force sensor, the force sensor is configured to detect the penetration force of the probe into concrete, the displacement sensor is configured to detect the compression displacement of the guide sleeve in the probe penetration process, and the strength of the concrete is the ratio of the penetration force to the penetration depth of the probe, wherein the penetration depth is the compression displacement of the guide sleeve. The detection device is convenient to carry, provides convenient detection conditions for the existing concrete strength detection, and is beneficial to improving the detection precision.

Inventors

ZHANG KAIWEN
XIAO ZHENGHANG
YI DAYUN
WU RONG
LIU JUN
CHEN WANG

Assignees

中国铁建重工集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250526

Claims (10)

1. The concrete strength detection device is characterized by comprising a shell and a guide sleeve, wherein the guide sleeve is elastically connected with the shell; The sensor comprises a shell, a force transducer and a displacement sensor are arranged in the shell at intervals, a probe is arranged in the guide sleeve, the end part of the probe, which is away from the shell, penetrates through the guide sleeve, and the end part of the probe, which is close to the shell, is connected with the force transducer; The force sensor is configured to detect the penetration force of the probe into the concrete, the displacement sensor is configured to detect the compression displacement of the guide sleeve in the probe penetration process, and the strength of the concrete is the ratio of the penetration force to the penetration depth of the probe, wherein the penetration depth is the compression displacement of the guide sleeve.
2. The concrete strength detecting apparatus according to claim 1, further comprising an elastic member disposed between the guide sleeve and the housing, and having both ends respectively abutted against the guide sleeve and the housing, the guide sleeve being elastically connected to the housing by the elastic member.
3. The concrete strength detecting apparatus according to claim 2, further comprising a connecting shaft connecting the guide sleeve and the housing, wherein the elastic member is fitted to the outside of the connecting shaft, and the probe is connected to the load cell via the connecting shaft.
4. The apparatus according to claim 3, further comprising a guide bearing, wherein the guide bearing connects the guide sleeve and the connection shaft and is fitted to the outside of the probe.
5. The concrete strength testing device of claim 4, further comprising a protective housing connecting the guide bearing and the housing, the resilient member being located in the protective housing; The radial dimension of the protective shell is larger than the dimension of the guide sleeve and smaller than the radial dimension of the shell.
6. The concrete strength detecting apparatus according to any one of claims 1 to 5, wherein a probe chuck is provided on the guide sleeve, the probe chuck fixing the probe; the concrete strength detection device further comprises a locking screw, and the locking screw is used for fixing the probe chuck.
7. The concrete strength detecting apparatus according to any one of claims 1 to 5, wherein the displacement sensor comprises a laser displacement sensor, and the guide sleeve is provided with a reflection sheet; The displacement sensor is configured to emit a laser beam to the reflective sheet and receive a reflected light signal.
8. The concrete strength detection device according to any one of claims 1 to 5, wherein a temperature sensor is further provided in the housing, and the load cell, the displacement sensor and the temperature sensor are arranged at intervals along the radial direction of the housing; the temperature sensor is configured to monitor a temperature of the concrete.
9. The concrete strength detecting apparatus according to any one of claims 1 to 5, wherein a handle is provided at a bottom of the housing, and a probe box is placed in the handle; and/or, a main board and a battery are arranged in the shell, and the force transducer, the main board and the battery are sequentially arranged at intervals along the direction from the guide sleeve to the shell.
10. The concrete strength detecting apparatus according to any one of claims 1 to 5, wherein the housing includes an upper case and a lower case, the upper case being provided to the lower case; The force transducer and the displacement transducer are distributed in the lower shell, the upper shell is provided with a touch display screen and keys, and one side of the lower shell, which is far away from the guide sleeve, is provided with a charging port and an indicator lamp.

Description

Concrete strength detection device Technical Field The application relates to the technical field of concrete quality detection, in particular to a concrete strength detection device. Background In bridge and tunnel construction, the strength of concrete is an important index for measuring construction quality and guaranteeing construction safety, and the sprayed concrete is used as a main supporting arm section for tunnel construction, and the strength information is very critical. The penetration method is a common concrete strength detection mode. Specifically, a concrete penetrometer is adopted to dynamically penetrate a test into hardened concrete, a probe is pulled out, and the strength of the concrete is calculated according to the relation between the predetermined penetration depth and the strength of the concrete by measuring the penetration depth of the probe penetration hole. However, the detection accuracy of the above-described detection device is low. Disclosure of utility model The embodiment of the application provides a concrete strength detection device which can improve the detection precision, is convenient to carry, has a wide application range and improves the user experience. In order to achieve the above object, an embodiment of the present application provides a concrete strength detecting apparatus including a housing and a guide sleeve, the guide sleeve and the housing being elastically connected; The sensor comprises a shell, a force transducer and a displacement sensor are arranged in the shell at intervals, a probe is arranged in the guide sleeve, the end part of the probe, which is away from the shell, penetrates through the guide sleeve, and the end part of the probe, which is close to the shell, is connected with the force transducer; The force sensor is configured to detect the penetration force of the probe into the concrete, the displacement sensor is configured to detect the compression displacement of the guide sleeve in the probe penetration process, and the strength of the concrete is the ratio of the penetration force to the penetration depth of the probe, wherein the penetration depth is the compression displacement of the guide sleeve. In one possible implementation manner, the device further comprises an elastic piece, wherein the elastic piece is arranged between the guide sleeve and the shell, two ends of the elastic piece are respectively abutted against the guide sleeve and the shell, and the guide sleeve is elastically connected with the shell through the elastic piece. In one possible implementation manner, the device further comprises a connecting shaft, the connecting shaft is connected with the guide sleeve and the shell, the elastic piece is sleeved outside the connecting shaft, and the probe is connected with the force transducer through the connecting shaft. In one possible implementation manner, the probe further comprises a guide bearing, wherein the guide bearing is connected with the guide sleeve and the connecting shaft and sleeved outside the probe. In one possible implementation, the guide bearing further comprises a protective housing connecting the guide bearing and the housing, the elastic member being located in the protective housing; The radial dimension of the protective shell is larger than the dimension of the guide sleeve and smaller than the radial dimension of the shell. In one possible implementation, a probe chuck is disposed on the guide sleeve, the probe chuck fixing the probe; the concrete strength detection device further comprises a locking screw, and the locking screw is used for fixing the probe chuck. In one possible implementation, the displacement sensor includes a laser displacement sensor, and the guide sleeve is provided with a reflective sheet; The displacement sensor is configured to emit a laser beam to the reflective sheet and receive a reflected light signal. In one possible implementation manner, a temperature measuring sensor is further arranged in the shell, the force measuring sensor, the displacement sensor and the temperature measuring sensor are arranged at intervals along the radial direction of the shell, and the temperature measuring sensor is configured to monitor the temperature of concrete. In one possible implementation, a handle is arranged at the bottom of the shell, and a probe box is arranged in the handle; and/or, a main board and a battery are arranged in the shell, and the force transducer, the main board and the battery are sequentially arranged at intervals along the direction from the guide sleeve to the shell. In one possible implementation manner, the shell comprises an upper shell and a lower shell, and the upper shell is provided on the lower shell; the force transducer and the displacement transducer are distributed in the lower shell, the upper shell is provided with a touch display screen and keys, and one side of the lower shell, which is far away from the guide sleeve, is provided