CN213091040U - Sensing device for road strain measurement - Google Patents

Abstract

The utility model discloses a sensing device for road strain measurement, including the road body, the detection case is installed in the inside fixed embedding of road body, fixed embedding is installed on the three two liang of surfaces that meet of detection case position placed in the middle and is put the sensing board, the inside of detection case is located the lower surface of sensing board position fixed mounting placed in the middle there is fixed axis post, fixed mounting has axle center ball on the inside center of detection case and the position that meets with three fixed axis post. A sensing device for road strain measurement, through setting up the not sensor board on the surface at the detection case and measuring the atress in cross axle, vertical axis and the three side of axis of ordinates, can be more the many first monitoring underground stress condition, make things convenient for going on of scientific research, the power amplifier voltage stabilization layer cooperation through setting up returns the shape wiring end and can amplify measuring current effectively, filters the clutter simultaneously, improves measurement accuracy.

Description

Sensing device for road strain measurement

Technical Field

The utility model relates to a road strain measurement technical field, in particular to a sensing device for road strain measurement.

Background

The ground stress is a stress existing in a rock mass, the stability of a road can be effectively monitored and evaluated by carrying out strain measurement on the road, potential safety hazards can be searched and analyzed, the life and property safety of personnel can be guaranteed, important parameters can be provided for earthquake-proof buildings, and the strain force measurement sensing device is widely applied to the field of road strain measurement; in the road strain measurement technology, a traditional sensor structure is usually adopted to be arranged in a road inner layer for strain measurement, the existing road strain measurement sensing device has certain defects in use, pressure in the longitudinal axis direction can only be measured, the stress condition of a transverse plane cannot be analyzed, the measurement precision is poor, and a measurer is easy to damage.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a sensing device for road strain measurement, which can effectively solve the problems of the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a sensing device for road strain measurement, includes the road body, the detection case is installed in the inside fixed embedding of road body, fixed embedding is installed on the surface position placed in the middle of three two liang of connecing of detection case and is sensed board, the inside of detection case is located the lower surface position fixed mounting placed in the middle of the sensing board has fixed axle post, fixed mounting has the axle center ball on the inside center of detection case and the position that meets with three fixed axle post.

Preferably, the road body includes asphalt layer and concrete layer two parts, the upper surface position on concrete layer is evenly laid on the asphalt layer.

Preferably, the detection boxes are uniformly embedded in the upper surface of the concrete layer, main power lines are fixedly connected to the side surfaces of the detection boxes, the detection boxes are communicated with one another through the main power lines, the number of the sensing plates on a single detection box is three, and the sensing plates are respectively used for measuring the strain force in the three directions of the transverse axis, the vertical axis and the longitudinal axis.

Preferably, the sensor board includes geotechnological cloth layer, foil gage sensing layer, power amplifier steady voltage layer and time shape wiring end, the geotechnological cloth layer is located the superiors of sensor board, the lower surface fixed mounting on geotechnological cloth layer has foil gage sensing layer, the lower surface fixed mounting on foil gage sensing layer has power amplifier steady voltage layer, fixed mounting has time shape wiring end on the side surface of foil gage sensing layer and power amplifier steady voltage layer, foil gage sensing layer communicates with each other through time shape wiring end and power amplifier steady voltage layer, geotechnological cloth layer is as the prevention of seepage substrate and the compound geotechnological anti-seepage material that forms of non-woven fabrics by plastic film, the surface of time shape wiring end evenly scribbles and has epoxy.

Preferably, the quantity of the inside fixed jack-post of every detection case is three, and two liang of verticals between the fixed jack-post, the inside embedding of fixed jack-post has the power supply line, the inside embedding of fixed jack-post has the transmission line.

Preferably, the inside fixed mounting of axle center ball has the control mainboard, and the fixed mounting has wireless transmission module on the surface of control mainboard, through power supply line and transmission line interconnect between control mainboard and the power amplifier voltage stabilization layer.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, measure the cross axle through setting up at the different sensor boards on the surface of detection case, the ascending dependent stress of vertical axis and the three side of axis of ordinates, can be more many first monitoring ground stress condition, make things convenient for going on of scientific research, use plastic film as the prevention of seepage substrate and with the geotechnological cloth layer that the compound geotechnological anti-seepage material that forms of non-woven fabrics constitutes, can strengthen the surface waterproof ability of detection case, protect the inside components and parts of detection case, the stress size of each axis position can be measured through the foil gage sensing layer that sets up, the power amplifier voltage stabilization layer cooperation that passes through the setting returns the shape wiring end and can amplify measuring current effectively, filter the clutter simultaneously, improve measurement accuracy, the data that detect through the control mainboard storage that sets up, the control end on ground is given with the data that detects.

Drawings

Fig. 1 is a schematic view of an installation position of a sensing device for road strain measurement according to the present invention;

FIG. 2 is a structural diagram of a detection box of a sensing device for measuring road strain according to the present invention;

fig. 3 is a view of the internal structure of a sensing box of the sensing device for measuring road strain according to the present invention;

fig. 4 is a structural view of a sensing plate of a sensing device for measuring road strain according to the present invention;

fig. 5 is a cross-sectional view of a fixed shaft column of a sensing device for road strain measurement.

In the figure: 1. a road body; 101. an asphalt layer; 102. a concrete layer; 2. a detection box; 201. a main power line; 3. a sensor board; 301. a geotextile layer; 302. a strain gage sensing layer; 303. a power amplifier voltage stabilization layer; 304. a clip terminal; 4. fixing the shaft column; 401. a power supply line; 402. a transmission line; 5. an axial ball; 501. a control main board; 502. and a wireless transmission module.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a sensing device for road strain measurement comprises a road body 1, a detection box 2 is fixedly embedded in the road body 1, a sensing plate 3 is fixedly embedded in the middle position of the three surfaces of the detection box 2, which are connected in pairs, a fixed shaft column 4 is fixedly installed in the middle position of the lower surface of the sensing plate 3 in the detection box 2, and a shaft center ball 5 is fixedly installed in the center of the interior of the detection box 2 and in the position connected with the three fixed shaft columns 4;

the road body 1 comprises an asphalt layer 101 and a concrete layer 102, wherein the asphalt layer 101 is uniformly laid on the upper surface of the concrete layer 102 and used for road water prevention; the detection boxes 2 are uniformly embedded and installed on the upper surface of the concrete layer 102, so that the strain force can be conveniently tested, the side surfaces of the detection boxes 2 are fixedly connected with main power lines 201, the detection boxes 2 are mutually communicated through the main power lines 201, the number of the sensing plates 3 on a single detection box 2 is three, and the sensing plates 3 are respectively used for measuring the strain force in the three directions of a transverse axis, a vertical axis and a longitudinal axis; the sensor board 3 comprises a geotechnical cloth layer 301, a strain gauge sensing layer 302, a power amplifier voltage stabilizing layer 303 and a clip terminal 304, the geotechnical cloth layer 301 is positioned on the uppermost layer of the sensor board 3, the lower surface of the geotechnical cloth layer 301 is fixedly provided with the strain gauge sensing layer 302 for measuring the stress of each axis, the lower surface of the strain gauge sensing layer 302 is fixedly provided with the power amplifier voltage stabilizing layer 303 which can effectively amplify the measuring current and filter noise and improve the measuring precision, the side surfaces of the strain gauge sensing layer 302 and the power amplifier voltage stabilizing layer 303 are fixedly provided with the clip terminal 304, the strain gauge sensing layer 302 is mutually communicated with the power amplifier voltage stabilizing layer 303 through the clip terminal 304, the geotechnical cloth layer 301 is a geotechnical anti-seepage material which is formed by taking a plastic film as an anti-seepage base material and compounding with non-woven fabrics, the surface waterproof capability of the detection box 2 is enhanced, epoxy resin is uniformly coated on the outer surface of the square-shaped terminal 304, so that moisture can be effectively isolated, and the short circuit at the connection position can be prevented; the number of the fixed shaft columns 4 in each detection box 2 is three, every two of the fixed shaft columns 4 are perpendicular, a power supply line 401 is embedded in each fixed shaft column 4, and a transmission line 402 is embedded in each fixed shaft column 4; the inside fixed mounting of axle center ball 5 has control mainboard 501, and the fixed mounting has wireless transmission module 502 on the surface of control mainboard 501, can give the control end on ground with measured data, through power supply line 401 and transmission line 402 interconnect between control mainboard 501 and the power amplifier voltage stabilizing layer 303.

It should be noted that, the utility model relates to a sensing device for road strain measurement, when using, need lay concrete layer 102 at first, after concrete layer 102 lays, install detection case 2 and main power cord 201 embedding on the surface of concrete layer 102, lay asphalt layer 101 on the surface of concrete layer 102 afterwards, supply power for all detection cases 2 through the main power cord 201 that sets up, measure the strain force in the three directions of cross axle, vertical axis and axis of ordinates through the sensing board 3 that sets up on the different surfaces of detection case 2, can monitor the ground stress condition more pluralism, facilitate the going on of scientific research, use plastic film as the impervious substrate and with geotechnological cloth layer 301 that geotechnological impervious material that the non-woven fabrics compounds forms, can strengthen the surface waterproof ability of detection case 2, protect the inside components and parts of detection case 2, can measure the stress size of each axle position through the strain gauge sensing layer 302 that sets up, through the power amplifier voltage stabilization layer 303 cooperation that sets up the measuring current that can amplify effectively of shape wiring end 304, filter the clutter simultaneously, improve measurement accuracy, fixed jack-post 4 through the setting supports triaxial sensing board 3, supply power for the components and parts on the sensing board 3 through the power supply line 401 that sets up, data transmission through the transmission line 402 that sets up with detecting gives control mainboard 501, data that detects are stored through the control mainboard 501 that sets up, data transmission for the control end on ground through the wireless transmission module 502 that sets up with detecting.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A sensing device for road strain measurement, characterized by: including road body (1), detection case (2) are installed to the inside fixed embedding of road body (1), fixed embedding is installed on the surface position placed in the middle of three two liang of facies that meet of detection case (2) and is sensed board (3), the lower surface position fixed mounting placed in the middle that the inside of detection case (2) is located sensed board (3) has fixed jack-post (4), fixed mounting has axle center ball (5) on the inside center of detection case (2) and the position that meets with three fixed jack-post (4).

2. A sensing device for road strain measurement according to claim 1, wherein: the road body (1) comprises an asphalt layer (101) and a concrete layer (102), wherein the asphalt layer (101) is uniformly paved on the upper surface of the concrete layer (102).

3. A sensing device for road strain measurement according to claim 2, wherein: the detection box (2) is uniformly embedded in the upper surface of the concrete layer (102), main power lines (201) are fixedly connected to the side surfaces of the detection box (2), the detection box (2) are communicated with one another through the main power lines (201), the number of the sensing plates (3) on the detection box (2) is three, and the sensing plates (3) are respectively used for measuring the strain force in the three directions of the transverse axis, the vertical axis and the longitudinal axis.

4. A sensing device for road strain measurement according to claim 3, wherein: the sensing plate (3) comprises a geotextile layer (301), a strain gauge sensing layer (302), a power amplifier voltage stabilizing layer (303) and a clip-shaped terminal (304), the geotextile layer (301) is positioned at the uppermost layer of the sensing plate (3), the lower surface of the geotextile layer (301) is fixedly provided with a strain gauge sensing layer (302), a power amplifier voltage stabilizing layer (303) is fixedly arranged at the lower surface of the strain gauge sensing layer (302), the side surfaces of the strain gauge sensing layer (302) and the power amplifier voltage stabilizing layer (303) are fixedly provided with a clip-shaped terminal (304), the strain gauge sensing layer (302) is communicated with the power amplifier voltage stabilizing layer (303) through a clip terminal (304), the geotechnical cloth layer (301) is made of a geotechnical anti-seepage material which is formed by compounding a plastic film serving as an anti-seepage base material and non-woven fabrics, and epoxy resin is uniformly coated on the outer surface of the clip-shaped terminal (304).

5. A sensing device for road strain measurement according to claim 4, wherein: the quantity of every inside fixed jack-post (4) of detection case (2) is three, and two liang of verticalities between fixed jack-post (4), power supply line (401) are installed to the inside embedding of fixed jack-post (4), transmission line (402) are installed to the inside embedding of fixed jack-post (4).

6. A sensing device for road strain measurement according to claim 5, wherein: the inside fixed mounting of axle center ball (5) has control mainboard (501), and the fixed mounting has wireless transmission module (502) on the surface of control mainboard (501), through power supply line (401) and transmission line (402) interconnect between control mainboard (501) and power amplifier voltage stabilization layer (303).

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