CN211446862U

CN211446862U - Intelligent compaction detector

Info

Publication number: CN211446862U
Application number: CN201921776837.XU
Authority: CN
Inventors: 于琦; 张道修; 江辉煌; 罗明亮; 范少峰; 高明显; 郑子栋; 闫晓夏; 张建东; 郭栋; 吴龙梁; 肖遇春; 季永贤; 梁月英; 刘峰; 郭亚磊
Original assignee: Academy Of Iron Sciences Shenzhen Research And Design Institute Co ltd; Shenzhen Construction Quality Inspection Center; Shenzhen Land Investment And Development Center
Current assignee: Academy Of Iron Sciences Shenzhen Research And Design Institute Co ltd; Shenzhen Construction Quality Inspection Center; Shenzhen Land Investment And Development Center
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-09-08
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses an intelligent compaction detector, including vibration exciter base, acceleration sensor, sensor magnetism inhale base, vibration exciter shell, excitation motor, wiring sleeve, backing plate, data acquisition instrument, data analysis appearance, portable power source, power cord, data line, vibration exciter magnetism inhale the base and install on the backing plate, vibration exciter magnetism base and vibration exciter base are connected, the excitation motor is installed on the vibration exciter base, the vibration exciter shell is installed on the vibration exciter base and covers the excitation motor; the sensor magnetic suction base is fixed on the vibration exciter shell in an adsorption mode. The utility model does not need to dig a detection pit and is a nondestructive detection; the device has simple and light structure, convenient operation, time and labor saving and low cost; the detection result can be rapidly given on site, and the construction period is greatly shortened.

Description

Intelligent compaction detector

Technical Field

The utility model relates to an intelligence compaction detector.

Background

The filling body is a general name of an earth structure formed by stacking and rolling building materials according to certain requirements, and covers a plurality of fields such as railways, highways, airports, dams, municipal administration and the like. According to the 'thirteen-five' plan of the department of transportation, filling projects in China will step into a large-scale rapid construction stage. The compaction quality detection is the most important means for ensuring the quality of filling engineering, and the detection of the compaction degree has obvious influence on the engineering benefit. On the one hand, compaction level detection is a key node for construction period. Whether the next procedure construction can be carried out is directly determined by the compaction degree detection result, and the compaction degree detection period directly influences the project progress. On the other hand, the filling engineering usually has huge engineering quantity, the number of test points which need to be detected by the compaction degree is large, and in addition, the existing compaction degree detection needs cooperation of a plurality of persons and is complex in operation, time-consuming and labor-consuming, and the engineering cost is influenced to a great extent. It follows that compaction level detection has a significant impact on the quality, duration, and cost control of the filling project.

Current compaction level detection is largely classified into two categories: (1) physical index detection, such as sand-pouring, water-pouring, cutting-ring, etc.; (2) and (5) detecting mechanical indexes, such as K vibration exciter shells 30 and Evd. However, the current compaction degree detection has the defects of complicated operation, time and labor waste, damage to a filling body structure and the like. For example: the sand filling method, the water filling method, the cutting ring method and the like need to excavate detection pits on the filling body, so that the overall structure of the filling body is damaged, and the engineering quality is influenced. The K vibration exciter shells 30 and Evd are usually required to be matched with large-tonnage machinery for detection and the like, and the detection needs cooperation of multiple persons, so that the operation is complex, time and labor are wasted, and the cost is high.

Disclosure of Invention

The utility model aims to solve the technical problem that an intelligence compaction detector that can solve above-mentioned problem.

The utility model discloses a realize through following technical scheme: an intelligent compaction detector comprises a vibration exciter base, an acceleration sensor, a sensor magnetic attraction base, a vibration exciter shell, a vibration exciting motor, a wiring sleeve, a base plate, a data acquisition instrument, a data analyzer, a mobile power supply, a power line, a data line and a vibration exciter magnetic attraction base, wherein the vibration exciter magnetic attraction base is arranged on the base plate, the vibration exciter magnetic base is connected with the vibration exciter base, the vibration exciting motor is arranged on the vibration exciter base, and the vibration exciter shell is arranged on the vibration exciter base and covers the vibration exciting motor; the sensor magnetic suction base is fixedly adsorbed on the vibration exciter shell, the acceleration sensor is arranged on the sensor magnetic suction base and is connected with the data acquisition instrument, and the data acquisition instrument is connected with the mobile power supply and the data analyzer; the acceleration sensor collects acceleration signals, and the data collector analyzes and processes the acceleration signals and converts the acceleration signals into acceleration data to be transmitted to the data analyzer.

As a preferable technical scheme, the vibration exciter shell is made of metal.

Preferably, the excitation motor is an eccentric excitation motor, and the excitation motor and the mobile power supply are connected through a wiring sleeve and a power line.

As the preferred technical scheme, the backing plate is a metal backing plate, and the vibration exciter magnetic suction base is fixed with the backing plate in a magnetic suction mode.

As a preferred technical scheme, the acceleration sensor is connected with the data acquisition instrument through a data line, and the data acquisition instrument is connected with the data analyzer through a data line.

The utility model has the advantages that:

1. the device does not need to dig a detection pit and is used for nondestructive detection;

2. the device has simple and light structure, convenient operation, time and labor saving and low cost;

3. the vibration exciter shell 3 can rapidly provide a detection result on the spot, and the construction period is greatly shortened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present invention;

fig. 2 is a plan view of the apparatus of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (with the data acquisition instrument rotated 0 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and fig. 2, the vibration exciter comprises an acceleration sensor 1, a sensor magnetic base 2, a vibration exciter housing 3, a vibration exciting motor 5, a wiring sleeve 6, a backing plate 8, a data acquisition instrument 9, a data analyzer 10 (generally, a notebook computer with data analysis software is installed, which can display acceleration data transmitted by the data acquisition instrument and can calculate and analyze original data), a mobile power supply 11, a power line 13, a data line 12, and a vibration exciter magnetic base 7, wherein the vibration exciter magnetic base is installed on the backing plate, the vibration exciter magnetic base is connected with the vibration exciter base, the vibration exciting motor is installed on the vibration exciter base, and the vibration exciter housing is installed on the vibration exciter base and covers the vibration exciting motor; the sensor magnetic suction base is fixedly adsorbed on the vibration exciter shell, the acceleration sensor is arranged on the sensor magnetic suction base and is connected with the data acquisition instrument, and the data acquisition instrument is connected with the mobile power supply and the data analyzer; the acceleration sensor collects acceleration signals, and the data collector analyzes and processes the acceleration signals and converts the acceleration signals into acceleration data to be transmitted to the data analyzer.

The vibration exciter shell is made of metal.

The excitation motor is an eccentric excitation motor, and the excitation motor is connected with the mobile power supply through a wiring sleeve and a power line.

Wherein, the backing plate is the metal backing plate, and vibration exciter magnetism is inhaled the base and is adsorbed fixedly with the backing plate through the mode of magnetism.

The acceleration sensor is connected with the data acquisition instrument through a data line, and the data acquisition instrument is connected with the data analyzer through a data line.

The working principle is as follows: when the eccentric excitation motor rotates at a constant speed, constant vibration energy is input into the filling body, part of the energy is absorbed and consumed by the filling body, and the residual energy which is not absorbed can rebound back to the equipment. Practical experience has shown that the magnitude of the "rebound" energy has a significant correlation with the degree of compaction of the filling. When the filling body is soft, the filling body absorbs more energy and the rebound energy is less; when the filling body is dense and hard, the filling body absorbs less energy and the 'rebound' energy is more. According to the principle of conservation of energy, the sum of the energy of the "bounce back" and the energy absorbed by the filling body is equal to the total energy of the system. Therefore, when the total vibration energy of the equipment is kept unchanged (namely the eccentric excitation motor rotates stably), the rebound energy can be calculated by acquiring the vibration acceleration signal of the equipment, and the compaction degree of the filling body is evaluated according to the rebound energy, so that the rapid nondestructive detection of the compaction degree of the filling body is realized.

The formula for calculating energy from vibration acceleration data is as follows:

in the formula, D_{Period of time}、D_Non-periodicEnergy dissipation rates (energy dissipated per unit time, which can be tabulated) based on periodic and non-periodic signals, respectivelyMagnitude of the characteristic energy); omega_nIs n times fundamental frequency;

the acceleration amplitude corresponding to n times of fundamental frequency; omega is the circular frequency; a. the_ωThe acceleration amplitude corresponding to the circular frequency omega; and c is damping.

First, data acquisition process

After construction is complete, a position on the filling 14 is randomly selected for removing foreign objects and leveled. The base plate 8 is firmly and tightly attached to the filling body 14, and the vibration exciter base 4 and the base plate 8 are tightly fixed by the magnetic attraction force of the vibration exciter magnetic attraction base 7. The vibration exciter shell 3 and the vibration exciting motor 5 are fixed on the vibration exciter base 4 through screws, 13 penetrate through the wiring sleeve 6 to be connected with the vibration exciting motor 5, and the sensor magnetic attraction of the base 2 is utilized to tightly fix the vibration exciter shell 1 and the vibration exciter shell 3. The acceleration sensor 1 is connected with the data acquisition instrument through a data line, the data acquisition instrument is connected with the data analyzer through a data line, and the mobile power supply respectively supplies power to the data acquisition instrument and the excitation motor 5 through power lines. After the equipment is installed, the exciting motor 5 is started, vibration signals are collected through the acceleration sensor, the vibration signals are transmitted to the data collection instrument through the data line, the data processed by the data collection instrument are transmitted to the data analyzer through the data line, and finally the data analyzer stores the data and calculates results according to a theoretical formula.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. An intelligence compaction detector which characterized in that: the vibration exciter magnetic absorption base is installed on the base plate, the vibration exciter magnetic base is connected with the vibration exciter base, and the vibration exciter shell is installed on the vibration exciter base and covers the vibration exciter motor; the sensor magnetic suction base is fixedly adsorbed on the vibration exciter shell, the acceleration sensor is arranged on the sensor magnetic suction base and is connected with the data acquisition instrument, and the data acquisition instrument is connected with the mobile power supply and the data analyzer; the acceleration sensor collects acceleration signals, and the data collector analyzes and processes the acceleration signals and converts the acceleration signals into acceleration data to be transmitted to the data analyzer.

2. The intelligent compaction tester of claim 1, wherein: the vibration exciter shell is made of metal.

3. The intelligent compaction tester of claim 1, wherein: the excitation motor is an eccentric excitation motor, and the excitation motor is connected with the mobile power supply through a wiring sleeve and a power line.

4. The intelligent compaction tester of claim 1, wherein: the backing plate is the metal backing plate, and vibration exciter magnetism is inhaled the base and is adsorbed fixedly with the backing plate through the mode of magnetism.

5. The intelligent compaction tester of claim 1, wherein: the acceleration sensor is connected with the data acquisition instrument through a data line, and the data acquisition instrument is connected with the data analyzer through a data line.