CN216816552U - Be applicable to closely knit degree location of thick wall structure grout and detect isolated plant - Google Patents
Be applicable to closely knit degree location of thick wall structure grout and detect isolated plant Download PDFInfo
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- CN216816552U CN216816552U CN202123210468.8U CN202123210468U CN216816552U CN 216816552 U CN216816552 U CN 216816552U CN 202123210468 U CN202123210468 U CN 202123210468U CN 216816552 U CN216816552 U CN 216816552U
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Abstract
The utility model discloses a special device for positioning and detecting grouting compactness of a thick-wall structure, which comprises a handle, an excitation head, a limiting nut, a spring pad and a balance weight flat pad, wherein the excitation head comprises a first end and a second end which are different in size, the inner sides of the first end and the second end are in threaded connection with a plurality of balance weight flat pads, two side ends of each balance weight flat pad are limited by the limiting nut, the spring pad is arranged between the limiting nut and the balance weight flat pad, the excitation head is detachably connected to the upper end of the handle, the handle is flat, and a hollow hole is formed in the lower end of the handle. Compared with the existing impact hammer, the utility model effectively improves the detection efficiency, reduces the detection cost, and simply, conveniently and quickly realizes the positioning detection of the grouting compactness of the thick-wall structure.
Description
Technical Field
The utility model relates to the technical field of thick-wall structure grouting compactness positioning and detecting devices, in particular to a special device suitable for thick-wall structure grouting compactness positioning and detecting.
Background
In the technical field of grouting compactness detection based on shock elastic waves, the prior art adopts an excitation hammer (spherical) for excitation, and in the common grouting compactness detection technology, the structure thickness which can be detected by adopting the spherical excitation hammer is generally not more than 60 cm. There are generally two methods for the generation of the shock wave, that is, the external force impact generation and the generation by the internal breakage of the object. The most common mode of excitation is hammer strike or ball drop. In the tests of vibration and fluctuation, the vibration excitation mode of detecting the grouting compactness of the structural duct by generating an elastic wave signal by exciting the circular hammers with different diameters is the most mainstream at present.
Wherein, the exciting hammer has direct influence to test signal, and the tup of current exciting hammer adopts solid metal material, and the replacement cost is higher after wearing and tearing, and solid metal weight is great, and the operation is not convenient, leads to detection error great.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a special device for positioning and detecting the grouting compactness of a thick-wall structure, and solves the problems of low detection precision and inconvenience in operation and carrying of the conventional vibration exciter.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model discloses a special device for positioning and detecting grouting compactness of a thick-wall structure, which comprises a handle, an excitation head, a limiting nut, a spring pad and a balance weight flat pad, wherein the excitation head comprises a first end and a second end which are different in size, the inner sides of the first end and the second end are in threaded connection with a plurality of balance weight flat pads, two side ends of each balance weight flat pad are limited by the limiting nut, the spring pad is arranged between the limiting nut and the balance weight flat pad, the excitation head is detachably connected to the upper end of the handle, the handle is flat, and a hollowed hole is formed in the lower end of the handle.
Furthermore, the outer surface of the excitation head is provided with a thread connected with the balance weight flat gasket and the limiting nut.
Furthermore, the outer side profiles of the first end and the second end of the excitation head are both arc-shaped.
Furthermore, a through hole is formed in the upper end of the handle in a penetrating mode, a connecting hole is formed in the outer wall of the through hole, a threaded hole corresponding to the connecting hole is formed in the vibration excitation head, and a hand-screwed screw penetrates through the connecting hole and the threaded hole in sequence and then connects and fixes the handle and the vibration excitation head.
Furthermore, the middle part of the handle is provided with an inward concave section.
Furthermore, the outer side surface of the handle is provided with an anti-skid layer.
Compared with the prior art, the utility model has the beneficial technical effects that:
the vibration excitation head is detachably connected with the handle, is convenient to carry, realizes the diversity of the mass configuration of the hammer body by adjusting the number of the balance weight flat pads, and can quickly adjust the working gravity center of the vibration excitation hammer by adjusting the distance of the balance weight limiting nuts so that the vibration excitation wavelength meets the grouting compactness detection of the beam bodies with different thicknesses during the test of the vibration excitation hammer, thereby reducing the frequency of the vibration excitation elastic wave, quickly improving the vibration excitation wavelength and improving the resolution of the elastic wave signal of the thick-wall structure.
Compared with the existing impact hammer, the utility model effectively improves the detection efficiency, reduces the detection cost, and simply, conveniently and quickly realizes the positioning detection of the grouting compactness of the thick-wall structure.
Drawings
The utility model is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic structural diagram of the special device for positioning and detecting grouting compactness of the thick-wall structure, which is disclosed by the utility model;
FIG. 2 is a frequency spectrum diagram of a test comparison structure of the present invention and a conventional excitation device;
description of reference numerals: 1. a handle; 2. an excitation head; 3. a counterweight flat pad; 4. a limit nut; 5. and (6) elastic cushion.
Detailed Description
As shown in figure 1, a be applicable to thick wall structure closely knit degree location detection isolated plant of grout, including handle 1, excitation head 2, counter weight limit nut 4, bullet pad 5 and counter weight flat 3 of filling up, excitation head 2 includes the first end and the second end of variation in size, first end, the inboard equal threaded connection of second end has a plurality of counter weight flat 3 of filling up, both sides end of counter weight flat 3 of filling up all is spacing through limit nut 4, be equipped with bullet pad 5 between limit nut 4 and the counter weight flat 3 of filling up, excitation head 2 detachable connects the upper end at handle 1, handle 1 sets up to the platykurtic, the lower extreme of handle 1 is equipped with the fretwork hole.
The structural materials of the present embodiment include, but are not limited to, butter steel, nylon, plastic. Wherein the quantity through the flat 3 of adjusting counter weight pad realizes the variety of hammer block mass configuration, through the distance of adjusting two stop nut 4, can be under the prerequisite that does not additionally increase the hammer model, the quick adjustment excitation hammer work focus and make excitation elastic wave frequency reduce, excitation wavelength satisfies the closely knit degree detection of different thickness roof beam bodies grout when making the test of excitation hammer. The test of structures with different thicknesses is convenient to realize; the flat handle 1 can improve the knocking directivity; the hollow hole at the lower end of the handle 1 can reduce the weight of the handle 1 and has a certain damping effect; the handle 1 is detachably connected with the excitation head 2, and is convenient to carry.
Specifically, the outer surface of the excitation head 2 is provided with an external thread connected with the balance weight flat pad 3 and the limit nut 4.
In the embodiment, the structural integrity of the excitation head 2 is ensured through threaded connection, and the tightness of the connection between the excitation head 2 and the balance weight flat pad 3 is ensured.
Specifically, the outer profiles of the first end and the second end of the excitation head 2 are both arc-shaped.
In this embodiment, as a common size of the impact hammer, the diameter of the first end is 20mm, and the curvature radius is R31; the second end has a diameter of 16mm and a radius of curvature R31. The elastic wave signals generated by the shock excitation of the impact hammers with different diameters are different, and the elastic wave signals can be flexibly prepared by a person skilled in the art according to the actual situation.
Specifically, the upper end of the handle 1 is provided with a through hole in a penetrating manner, the outer wall of the through hole is provided with a connecting hole, the vibration excitation head 2 is provided with a threaded hole corresponding to the connecting hole, and the handle 1 and the vibration excitation head 2 are fixedly connected after hand-screwed screws sequentially penetrate through the connecting hole and the threaded hole.
The present embodiment is only used as a reference, and is a way to realize the detachable connection of the excitation head 2 and the handle 1, and those skilled in the art can use other detachable connection methods in the prior art.
Specifically, the middle part of the handle 1 is provided with an inward concave section.
This embodiment sets up interior concave section, is convenient for hold handheld position, and interior concave section has buffering effect simultaneously.
Specifically, the outer side surface of the handle 1 is provided with an anti-slip layer.
The embodiment is provided with the anti-slip layer, so that the comfort level of a user can be improved.
The using process of the utility model is as follows:
firstly, according to the structural thickness to be detected, the excitation head 2 with a suitable model is selected, namely the diameter and the curvature of the first end and the second end are selected, the balance weight flat cushion 3 with a proper number is prepared, the working gravity center of the excitation hammer is quickly adjusted by adjusting the distance between the two limit nuts 4, the frequency of the excitation elastic wave is reduced, the excitation wavelength during the test of the excitation hammer meets the requirement of detecting the grouting compactness of beams with different thicknesses, the frequency of the excitation signal of the elastic wave can be effectively and quickly adjusted and reduced, the excitation wavelength is quickly improved, the resolution of the elastic wave signal of the thick-wall structure is improved, the grouting compactness of the thick-wall structure is positioned and detected, and the excitation problem of the grouting compactness of the thick-wall structure is solved.
For reference, the comparative test of the impact hammer of the present invention with a conventional steel ball: in the positioning detection of the grouting compactness of the primary thick-wall structure, concrete members (with the thickness of 0.8m) with two depths are tested according to the field conditions, the pipeline burial depth is about 15cm, and a metal pipeline with the diameter of 5cm is respectively tested and compared with a traditional excitation device by using the utility model, and the specifications of the hammer are as follows: the traditional 50 hammers and the utility model adopt eight models 1# -8# (1# phi 16L 300R 31, 2# phi 16L 1400R 35, 4# phi 18L 300R 31, 5# phi 18L 400R 35, 7# phi 200L 300R 31 and 8# phi 20L 400R 35, wherein the radius is calculated by the radius of the curved surface at the end of the rod piece, 1# phi 16L 300R 31 represents that the diameter of the hammer head is 16mm, the length of the hammer head is 300mm, the curvature of the hammer head is 31mm), the knocking mode is vertical knocking by default, and the height from the ground is 10 cm. Comparison with the situation referring to fig. 2, the test effect of the present invention is superior to the conventional 50 hammers in view of the quality of the bottom reflection signal.
The method can effectively improve the signal frequency spectrum concentration of the thick-wall structure grouting compactness positioning detection, obviously improve the quality of the thick-wall structure bottom reflection signal, and correspondingly improve the detection precision of the thick-wall structure grouting compactness positioning defect; compared with the existing impact hammer, the impact hammer has the advantages that the detection efficiency is effectively improved, and the lifting detection cost is reduced.
The above-described embodiments are only intended to illustrate the preferred embodiments of the present invention, and not to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (6)
1. The utility model provides a be applicable to thick wall structure closely knit degree location detection isolated plant of grout, its characterized in that: including handle (1), excitation head (2), the flat pad of counter weight (3), stop nut (4) and bullet pad (5), excitation head (2) are including the first end and the second end of variation in size, the inboard equal threaded connection at first end, second end has a plurality of the flat pad of counter weight (3), the both sides end of the flat pad of counter weight (3) is all spacing through stop nut (4), stop nut (4) with be equipped with bullet pad (5) between the flat pad of counter weight (3), excitation head (2) detachable connect the upper end of handle (1), handle (1) sets up to the platykurtic, the lower extreme of handle (1) is equipped with the fretwork hole.
2. The special device for the positioning detection of the grouting compactness of the thick-wall structure according to claim 1, characterized in that: and the outer surface of the excitation head (2) is provided with threads connected with the balance weight flat pad (3) and the limiting nut (4).
3. The special device for the positioning detection of the grouting compactness of the thick-wall structure according to claim 1, characterized in that: the outer side profiles of the first end and the second end of the excitation head (2) are both arc-shaped.
4. The special device for the positioning detection of the grouting compactness of the thick-wall structure according to claim 1, characterized in that: the handle is characterized in that a through hole is formed in the upper end of the handle (1) in a penetrating mode, a connecting hole is formed in the outer wall of the through hole, a threaded hole corresponding to the connecting hole is formed in the vibration excitation head (2), and a hand-screwed screw penetrates through the connecting hole and the threaded hole in sequence and then is used for connecting and fixing the handle (1) and the vibration excitation head (2).
5. The special device for the positioning detection of the grouting compactness of the thick-wall structure according to claim 1, characterized in that: the middle part of the handle (1) is provided with an inward concave section.
6. The special device for the positioning detection of the grouting compactness of the thick-wall structure according to claim 1, characterized in that: the outer side surface of the handle (1) is provided with an anti-skid layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123210468.8U CN216816552U (en) | 2021-12-20 | 2021-12-20 | Be applicable to closely knit degree location of thick wall structure grout and detect isolated plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123210468.8U CN216816552U (en) | 2021-12-20 | 2021-12-20 | Be applicable to closely knit degree location of thick wall structure grout and detect isolated plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216816552U true CN216816552U (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123210468.8U Active CN216816552U (en) | 2021-12-20 | 2021-12-20 | Be applicable to closely knit degree location of thick wall structure grout and detect isolated plant |
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| Country | Link |
|---|---|
| CN (1) | CN216816552U (en) |
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2021
- 2021-12-20 CN CN202123210468.8U patent/CN216816552U/en active Active
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