KR102619047B1 - Sensing module for underground inclinometer and multi-function underground inclinometer including same - Google Patents

Abstract

The present invention relates to a sensing module capable of improving the accuracy of measurement and a multi-functional underground inclinometer including the same. In the sensing module that is inserted into a fixed pipe buried in the ground and measures the slope of the ground, the pipe having a predetermined length is provided. A sensor unit that has a built-in sensor inside and forms a space through which a cable passes, a first pair of sensors that are coupled to both ends of the surface of the sensor unit and have elastic pieces formed on the outer circumferential surface to guide insertion into the fixing tube. , 2 guides, and a pair of stoppers fixedly coupled to each other at a predetermined distance apart from an end surface of one side of the sensor unit, wherein the first guide extends in the longitudinal direction of the sensor unit within the gap between the pair of stoppers. It is coupled to flow along, and the second guide is coupled to be fixed to the end of the sensor unit.

Description

Sensing module for underground inclinometer and multi-function underground inclinometer including same {Sensing module for underground inclinometer and multi-function underground inclinometer including same}

The present invention relates to an underground inclinometer, and more specifically, to a sensing module that can improve measurement accuracy and a multi-functional underground inclinometer including the same.

Displacement of civil engineering structures such as roads, tunnels, bridges, and dams, slope cuts, subway construction sites, and side walls during construction of underground foundations for new high-rise buildings, or ground slopes or displacements of reclaimed landfills and soft ground. It has a significant impact on the stability of construction and structures.

Therefore, in order to stably operate various civil engineering and architectural structures, it is necessary to accurately measure the degree of slope and displacement within the relevant construction section or the ground of the civil engineering and architectural structures to determine the behavior of the surrounding ground. For this purpose, a ground displacement measuring device equipped with a sensor that measures displacement is being applied.

For example, the inventor of the present applicant introduced a ground displacement measuring device in Korean Patent No. 10-1294006. Figure 1 is a diagram showing the installation state of a conventional underground displacement measuring device shown in prior literature, and Figure 2 is a perspective view showing the sensing device of Figure 1.

Referring to the drawing, the underground displacement measuring device is installed so that the sensing device 20 is inserted into the fixing pipe 10. The fixation tube 10 is a cylindrical tube with a guide groove formed on the inner wall, and a plurality of sensing devices 20 are inserted inside the fixation tube 10 to measure the displacement of each point in the ground. Each sensing device 20 is connected to a cable 30 that penetrates the inside, and one end of the cable 30 is exposed to the outside to transmit the displacement detection signal of each sensing device 20 to the outside.

In addition, the sensing device 20 consists of a sensor unit 21 in which a sensor is embedded, and a pair of guides 22 respectively connected to both ends of the sensor unit 21. The guide 22 has an elastic piece 23, and the elastic piece 23 slides along the guide groove of the fixation tube 10, so that the sensing device 20 can be easily inserted and installed inside the fixation tube 10. make it possible

Such a conventional underground displacement measuring device simplifies the structure of the sensing device, making it easy to manufacture and install, and reducing manufacturing costs.

However, in a conventional underground displacement measuring device, a pair of guides are coupled to be fixed to both ends of the sensor unit. Therefore, since both ends of the sensing device are fixed to the fixing tube via guides, there is a disadvantage in that the sensing sensitivity is lowered for small displacements, thereby lowering the accuracy of displacement measurement.

Additionally, in a conventional underground displacement measuring device, multiple sensing devices are connected via cables that transmit sensing signals. In this case, the cable may be damaged during the installation process of the sensing device or due to displacement of the sensing device, and the displacement detection signal may not be transmitted to the outside due to damage to the cable.

Korean Patent No. 10-1294006 (Ground displacement measuring device) Korean Patent No. 10-1302575 (Ground displacement measuring device)

The present invention was proposed to solve the above problems, and provides a multi-functional underground inclinometer that can improve the accuracy of tilt or displacement measurement by allowing the sensing module to easily flow in the vertical and rotational directions inside the fixed pipe. Make it a task to do it.

In addition, the present invention aims to provide a multi-functional underground inclinometer that can stably connect multiple sensing modules and prevent damage to cables transmitting sensing signals.

This embodiment to solve the above problem is a sensing module for measuring the slope of the ground. In the sensing module that is inserted into the inside of a fixed pipe buried in the ground to measure the slope of the ground, a pipe with a predetermined length is installed inside. A sensor unit that has a built-in sensor and forms a space through which a cable passes, a pair of first and second guides that are coupled to both ends of the surface of the sensor unit and have elastic pieces formed on the outer peripheral surface to guide insertion into the fixing tube. , and a pair of stoppers fixedly coupled to an end surface of one side of the sensor unit at a predetermined distance apart, and the first guide flows along the longitudinal direction of the sensor unit within the gap between the pair of stoppers. The second guide is coupled so as to be fixed to the end of the sensor unit.

In addition, the first and second guides are coupled to the sensor unit by a coupling screw penetrating the body, and can be coupled so that the first guide flows or the second guide is fixed depending on the fastening depth of the coupling screw. there is.

In order to solve the above problems, this embodiment is an underground displacement measuring device, which is inserted into a fixed pipe buried in the ground and measures the displacement of the ground. In the underground displacement measuring device, a pipe having a predetermined length is installed inside. A sensor unit that forms a space through which a sensor is embedded and a cable passes, and a pair of first and second sensors that are coupled to both ends of the surface of the sensor unit and have elastic pieces formed on the outer peripheral surface to guide insertion into the fixing tube. A plurality of sensing modules consisting of a guide and a pair of stoppers fixedly coupled at a predetermined distance from one end surface of the sensor unit, a flexible part having a predetermined length, and a pair formed at both ends of the flexible part. It consists of first and second coupling parts, wherein the first coupling part is coupled to the sensor part of the sensing module on one side, and the second coupling part is coupled to the sensor part of the sensing module on the other side, and the neighboring pair of Includes a connection module that connects the sensing module.

Additionally, the first guide may be coupled to flow along the longitudinal direction of the sensor unit within the gap between the pair of stoppers, and the second guide may be coupled to be fixed to an end of the sensor unit.

In addition, the first and second guides are coupled to the sensor unit by a coupling screw penetrating the body, and depending on the fastening depth of the coupling screw, the first guide may flow or the second guide may be coupled to be fixed. .

Additionally, the first coupling portion and the sensor portion may be coupled to be fixed, and the second coupling portion and the sensor portion may be coupled to flow in a rotational direction.

In addition, the second coupling part has a concave ring-shaped rotation guide groove formed along the outer peripheral surface, and is coupled to the sensor unit by a fixing screw penetrating the sensor unit, and the end of the fixing screw is located in the rotation guide groove. can be combined to do so.

In the present invention, by combining the guides on either side so that they can move, independent displacement of the sensor unit is possible, and the accuracy of displacement measurement can be improved by reacting sensitively to even small displacements.

In addition, the present invention can prevent damage to cables by connecting multiple sensing modules through a connection module.

In addition, the present invention connects a plurality of sensing modules through a flexible connection module, so that each sensing module can be displaced independently, thereby improving the accuracy of displacement measurement.

In addition, the present invention connects a plurality of sensing modules to enable rotational flow, so that each sensing module can be displaced independently, thereby improving the accuracy of displacement measurement.

1 is a diagram showing the installation state of a ground displacement measuring device according to the prior art;
Figure 2 is a perspective view showing the sensor unit, which is the main part of Figure 1;
Figure 3 is a diagram showing the installation state of the underground inclinometer according to this embodiment;
Figure 4 is a cross-sectional view showing a fixation pipe according to this embodiment;
Figure 5 is a perspective view showing an underground inclinometer according to this embodiment;
Figure 6 is an exploded view showing an underground inclinometer according to this embodiment;
Figure 7 is a perspective view showing the main part of Figure 5, a guide;
Figure 8 is a side view showing the flow state of the guide, which is the main part of Figure 5;
Figure 9 is a cross-sectional view showing the combined structure of the main part of Figure 5, the sensing module and the connection module.

The technical problems achieved by the present invention and its implementation will become clear by the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be examined in detail with reference to the attached drawings.

It should be understood that the differences in this embodiment, described later, are not mutually exclusive. That is, without departing from the spirit and scope of the present invention, the specific shapes, structures, and characteristics described may be implemented in other embodiments with respect to one embodiment, and may be implemented in other embodiments of the individual components within each disclosed embodiment. It should be understood that the position or arrangement may be changed, and similar reference numbers in the drawings refer to the same or similar functions across various aspects, and the length, area, thickness, etc. may be exaggerated for convenience. In the description of this embodiment, expressions such as first, second, top, bottom, before, after, etc. indicate relative order, position, direction, etc., and their technical meaning is not limited by dictionary meaning.

Figure 3 is a diagram showing the installation state of the underground inclinometer according to this embodiment, and Figure 4 is a cross-sectional view showing the fixing pipe according to this embodiment.

The underground inclinometer according to this embodiment is installed inside a fixed pipe 10 buried to a predetermined depth in the ground. The fixing tube 10 is formed as a long cylindrical tube, and may be formed by connecting a plurality of cylindrical tubes having a predetermined length. The underground inclinometer of this description includes a device that measures information such as ground inclination, settlement, and displacement using a sensor.

This fixed pipe 10 is a pipe made of ABS material with a passage 11 formed therein, and protects the measuring device inserted therein and ensures that the measuring device is located at the corresponding ground position. A plurality of guide grooves 12 are formed on the inner peripheral surface of the passage 11 in the longitudinal direction. The guide grooves 12 are fitted with the elastic pieces 121 of the guide 120, which will be described later, and are configured to slide the elastic pieces 121 into the guide grooves. Two or four guide grooves 12 are formed depending on the number of elastic pieces 121. It can be.

The underground inclinometer of this embodiment may be configured by connecting a plurality of sensing modules 100, and each sensing module 100 is connected via a connection module 200. A cable 30 is inserted inside the sensing module 100 and the connection module 200 to transmit a displacement signal of the sensing module 100 to the outside. The underground inclinometer of this embodiment may include three or more sensing modules 100 and two or more connection modules 200 connecting each sensing module 100 in the longitudinal direction, depending on the depth of the ground. Hereinafter, two or more connection modules 200 may be included. An underground inclinometer consisting of a sensing module 100 and a connection module 200 connecting them is illustrated.

Figure 5 is a perspective view showing an underground inclinometer according to this embodiment, Figure 6 is an exploded view showing an underground inclinometer according to this embodiment, Figure 7 is a perspective view showing the main part of the guide in Figure 5, and Figure 8 is a perspective view showing the guide in Figure 5. It is a side view showing the flow state of the guide, which is the main part, and Figure 9 is a cross-sectional view showing the combined structure of the sensing module and the connection module, which are the main part of Figure 5.

First, referring to FIGS. 5 and 6, the underground inclinometer of this embodiment includes a sensing module 100 and a connection module 200 connecting the sensing modules.

The sensing module 100 is configured to sense the displacement of the ground and consists of a sensor unit 110, a guide 120, and a stopper 130.

The sensor unit 110 is composed of an installation space in which the sensor is installed and a cylindrical pipe in which a through hole through which the cable 30 passes is formed. A connection module 200 is coupled to one end of the sensor unit 110, a closing cap 140 or a cable connection cap 150 is selectively coupled to the other end, and another connection module 200 can be coupled. It may be possible. The connection module 200, the finishing cap 140, or the cable connection cap 150 can be fixed by the fixing screw 111, and for this purpose, fixing screws 111 are installed at both ends of the sensor unit 110. A plurality of penetrating screw through holes 112 are formed along the circumferential direction.

The guide 120 is configured to guide the sensing module 100 to be easily inserted into the fixation tube 10 and to be fixed inside the fixation tube 10 at a predetermined position. The guide 120 is coupled to the outer peripheral surface of the sensor unit 110 at an end of the sensor unit 110. As shown in FIG. 7, the guide 120 for this has a cylindrical shape with a sensor unit insertion hole 122 into which the sensor unit 110 is inserted, and an elastic piece (elastic piece) on the outer peripheral surface of the cylindrical body. 121) is formed. The elastic piece 121 is inserted into the guide groove 12 of the fixation pipe 10 and slides to allow the underground inclinometer to be inserted into the fixation pipe 10. Two or four elastic pieces 121 for this purpose may be formed in the circumferential direction of the guide 120 at positions corresponding to the guide grooves 12 of the fixing tube 10.

In addition, the guide 120 consists of a pair coupled to both ends of the sensor unit 110, with a flow guide 120-1 coupled to one end and a fixed guide 120-2 coupled to the other end. ) is composed of. The guide 120 is fixed to the sensor unit 110 by a coupling screw 123 penetrating the body. For this purpose, a plurality of screw through holes 124 through which the coupling screw 123 penetrates are formed in the guide 120 along the circumferential direction.

The coupling screw 123 is not completely fastened so that the flow guide 120-1 is not fixed to the sensor unit 110, and the fixed guide 120-2 is fitted with a coupling screw so that it can be fixed to the sensor unit 110. 123) is completely concluded. That is, depending on the fastening depth of the coupling screw 123, the end of the coupling screw 123 is fastened in the flow guide 120-1 so as not to press the surface of the sensor unit 110, and in the fixed guide 120-2, the end of the coupling screw 123 is fastened so as not to pressurize the surface of the sensor unit 110. The end of the screw 123 is fastened to press the surface of the sensor unit 110. Accordingly, the fixed guide 120-2 is fixed at the end of the sensor unit 110, but the flow guide 120-1 flows along the longitudinal direction of the sensor unit 110.

The stopper 130 is a component that sets the flow section so that the flow guide 120-1 flows only within a predetermined section on the surface of the sensor unit 110. The stopper 130 for this may have a ring shape with a hole into which the sensor unit 110 is inserted, and a pair of stoppers 130 are coupled to the surface of the sensor unit 110 at a predetermined distance apart. The stopper 130 is fixedly coupled to the surface of the sensor unit by a fixing screw 131.

Therefore, as shown in FIG. 8, the flow guide 120-1 flows between a pair of stoppers 130 spaced apart from each other. As the flow guide 120-1 capable of flowing is coupled to one side of the sensor unit 110, the sensing module 100 can flow independently of the fixation tube 10, thereby improving the sensitivity and accuracy of displacement detection. You can do it.

The connection module 200 is a component that connects the sensing module 100 and consists of a flexible part 210 having a predetermined length and first and second coupling parts 220 and 230 formed at both ends of the flexible part 210. It comes true. The interior of the connection module 200 is formed with a cable penetration hole through which the cable 30 passes. By providing the connection module 200 with a flexible portion 210, the two sensing modules 100 connected to each other can independently detect minute displacement, thereby improving detection performance and accuracy.

The first coupling part 220 is coupled to the sensing module 100 on one side, and the second coupling part 230 is coupled to the other sensing module 100 on the other side. The first and second coupling parts 220 and 230 are coupled via a packing means 240 that seals the inside and outside when combined with the sensing module 100. For this purpose, a packing means 240 is installed on the surface of the first and second coupling parts 220 and 230. ) A packing groove 241 is formed into which the is fastened. The packing means 240 may be an O-ring made of silicon.

Additionally, the first coupling portion 220 may provide a sensor seating surface 221 that protrudes in a planar structure at the distal end. When the first coupling part 220 is coupled to the sensor unit 110, it is inserted into the sensor unit 110, so a sensor (not shown) that detects displacement can be located inside the sensor unit 110. The first coupling unit 220 and the sensor unit 110 may be coupled and fixed by a fixing screw 111. For this purpose, a screw through hole 112 through which the fixing screw 111 penetrates is formed in the sensor unit 110 in the circumferential direction, and a screw is inserted into the first coupling part 220 at a position corresponding to the screw through hole 112. A groove 222 is formed.

Additionally, the second coupling portion 230 forms a concave ring-shaped rotation guide groove 231 along the circumferential direction. The second coupling unit 230 and the sensor unit 110 may be coupled and fixed by a fixing screw 111. For this purpose, a screw through hole 112 through which the fixing screw 111 penetrates is formed in the sensor unit 110 in the circumferential direction. As shown in FIG. 9, when the fixing screw 111 fixes their combination, the end of the fixing screw 111 is located in the rotation guide groove 231. Therefore, the flow in the longitudinal direction of the second coupling part 230 and the sensor unit 110 is fixed by preventing the flow in the longitudinal direction by the fixing screw 111, but the flow in the rotation direction is fixed by the rotation guide groove 231. It doesn't work.

In this way, the sensor unit 110 is capable of moving in the rotational direction with respect to the second coupling unit 230. Accordingly, each sensing module 100 coupled to both ends of the connection module 200 can rotate independently of each other, and thus can independently detect minute displacements, thereby improving detection performance and accuracy.

Although exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments will occur to those skilled in the art. These modifications and other embodiments are to be considered and included in the appended claims without departing from the true spirit and scope of the present invention.

100: Sensing module
110: sensor unit 120: guide
130: stopper
200: Connection module
210: flexible part 220: coupling part

Claims (7)

delete delete In an underground inclinometer that is inserted into a fixed pipe buried in the ground and measures the slope of the ground,
It is a pipe with a predetermined length, and is coupled to a sensor unit that has a built-in sensor inside and forms a space through which a cable passes, and both ends of the surface of the sensor unit, and an elastic piece is formed on the outer circumferential surface to facilitate insertion into the fixing tube. A plurality of sensing modules consisting of a pair of first and second guides for guiding, and a pair of stoppers fixedly coupled to each other at a predetermined distance from an end surface of one side of the sensor unit;
It consists of a flexible part having a predetermined length and a pair of first and second coupling parts formed at both ends of the flexible part, wherein the first coupling part is coupled to the sensor part of one sensing module, and the second coupling part The unit includes a connection module that is coupled to the sensor unit of the other sensing module and connects a pair of neighboring sensing modules,
The first guide is coupled along the longitudinal direction of the sensor unit within the gap between the pair of stoppers,
The second guide is coupled to be fixed to the end of the sensor unit,
Multi-functional underground inclinometer. delete The method of claim 3, wherein the first and second guides are:
It is coupled to the sensor unit by a coupling screw penetrating the body,
A multi-functional underground inclinometer that is coupled so that the first guide flows or the second guide is fixed depending on the fastening depth of the coupling screw. According to claim 5,
The first coupling portion and the sensor portion are coupled to be fixed,
The second coupling portion and the sensor portion are coupled to flow in a rotational direction. The method of claim 6, wherein the second coupling portion is:
A concave ring-shaped rotation guide groove is formed along the outer peripheral surface, and is coupled to the sensor unit by a fixing screw penetrating the sensor unit, wherein the end of the fixing screw is coupled to be located in the rotation guide groove. A multi-function underground inclinometer.

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