KR102529543B1 - Tensile length measuring system of earth anchor tension apparatus and the control system of magnitude of tensile force of earth anchor using thereof - Google Patents

Abstract

The present invention relates to a tensile length measurement system of an earth anchor tensioning device and an earth anchor tension control system using the same, and more particularly, to measure the magnitude of tensile force or change in tensile force applied to a tensile member of a plurality of earth anchors installed in the ground In order to measure the change in the tensile length of the earth anchor tension member as a calculation factor for After emitting a laser at the upper tip of the tension cylinder, the reflected laser is received to measure the distance between the tension head and the tip of the tension cylinder as the tensile length of the tension steel wire, and is wirelessly connected to the laser distance meter to measure the plurality of points. It is configured to include a mobile terminal that can control the tension device of the earth anchor individually while outputting and monitoring the tensile length measurement result of the earth anchor of the earth anchor. It relates to a tensile length measurement system of an earth anchor tensioning device that can prevent ground instability or collapse accidents due to tensile imbalance of an earth anchor and an earth anchor tension control system using the same.

Description

Tensile length measuring system of earth anchor tension apparatus and the control system of magnitude of tensile force of earth anchor using the same}

The present invention relates to a tensile length measurement system of an earth anchor tensioning device and an earth anchor tension control system using the same, and more particularly, to measure the magnitude of tensile force or change in tensile force applied to a tensile member of a plurality of earth anchors installed in the ground In order to measure the change in the tensile length of the earth anchor tension member as a calculation factor for After emitting a laser at the upper tip of the tension cylinder, the reflected laser is received to measure the distance between the tension head and the tip of the tension cylinder as the tensile length of the tension steel wire, and is wirelessly connected to the laser distance meter to measure the plurality of points. It is configured to include a mobile terminal that can control the tension device of the earth anchor individually while outputting and monitoring the tensile length measurement result of the earth anchor of the earth anchor. It relates to a tensile length measurement system of an earth anchor tensioning device that can prevent ground instability or collapse accidents due to tensile imbalance of an earth anchor and an earth anchor tension control system using the same.

In general, earth anchors are formed to apply a lateral or vertical restraining force or preceding load to a structure by connecting a civil or building structure to the ground with a tension member such as a strand, such as earth wall, transmission tower foundation, dam or slope reinforcement It is used for various purposes.

As shown in [Fig. 1], the structure of such an earth anchor is to install a fixed earth anchor 201 by inserting and connecting a plurality of tension members 205 into the ground, and A tensioning device for tensioning the tensioning member is installed, but the tensioning device is coupled to the tensioning piston 204 coupled to move up and down by the hydraulic pressure of the tensioning cylinder 203 and the upper portion of the tensioning piston 204, and a plurality of tensioning members. It is configured to include a tensile head 202 in which a plurality of tensile through-holes 205 pass through.

In this way, after the earth anchor is installed in the ground, it is used after being tensioned with a constant load in consideration of the design anchor load. Tension force in the length direction of the earth anchor due to immediate loss such as loss due to friction between sheath pipes and loss due to slip of the grouting part, and time loss due to relaxation of tension members such as strands and creep and drying shrinkage of the grouting fixing part. As the tension decreases, a difference occurs from the initially applied tension, and sometimes the support capacity of the earth anchor is greatly reduced, which may affect stability.

In order to solve such a problem, it is necessary to regularly review the size and loss of tension and take appropriate countermeasures if necessary.

However, it is not easy to measure and grasp the size and tension change of the earth anchor during maintenance as well as during construction, so there have been various difficulties. Nevertheless, various methods of measuring the tension of the earth anchor have been proposed.

Looking at the prior art for measuring the size of the tension force and the change in the tension force of the earth anchor, as shown in [Fig. 2], there was a method of measuring the tensile length by a primitive method of measuring the tensile length with a tape measure.

Korean Patent No. 10-0638884 (registration date October 19, 2006) has a plurality of concave grooves 112 along the edges to pass through the sheath pipes 106a and 106b into which the PC steel wire 101a is inserted at regular intervals. A spacer 110 formed at regular intervals, in which the connection pipe 114 is installed vertically in the center, and at the same time, through holes 116 are formed on both sides of the connection pipe 114, through which injection tubes for injecting cement paste are inserted. ), and a threaded portion 122 is formed on one inner circumferential surface so as to be engaged with the threaded portion 114a formed on the outer circumferential surface of the front end of the connection pipe 114 installed vertically at the center of the spacer 110, facing each other along the longitudinal direction. A displacement measuring pipe 120 in which a plurality of long holes 124 are formed and a scale 120a is engraved on the outer surface of the long holes 124 to measure the amount of displacement of the earth anchor 102, and the displacement measuring pipe 120 A movable disc 130 disposed movably inside the movable disc 130, a measuring pin 140 whose one side is screwed into the screw hole 132 formed on the rim surface of the movable disc 130, and from the outside of the movable disc 130 The coil spring 150 installed in the displacement measuring pipe 120 and the coil spring 150 are fixed so as to bias the movable disc 130 toward the cone head 103, thereby moving the movable disc 130 to the cone head. Earth anchor displacement measurement device, characterized in that composed of a cover 160 formed with a threaded portion 162 screwed with a threaded portion 126 formed on the inner circumferential surface of the other side of the displacement measuring pipe 120 so as to be pushed toward the (103) side It is known.

In addition, Korean Registered Patent No. 10-0719176 (registration date May 10, 2007) discloses a plurality of wires along the edge surface to pass through the sheath pipes 106a and 106b into which the PC steel wire 101a of the earth anchor is inserted at regular intervals. Concave grooves 112 are formed at regular intervals, and the connection pipe 114 is installed vertically in the center, and at the same time, a plurality of injection tubes for injecting cement paste are inserted into the through-holes on both sides of the connection pipe 114 ( 116) is formed on the spacer 110, and a threaded portion 122 is formed on one inner circumferential surface so as to engage with the threaded portion 114a formed on the outer circumferential surface of the front end of the connection pipe 114 installed vertically at the center of the spacer 110. A displacement measuring pipe 120 for measurement, in which a plurality of long holes 124 are formed along the longitudinal direction opposite to each other, and a scale 120a is engraved on the outer surface of the long holes 124 to measure the amount of displacement of the earth anchor, One side of the L-shaped measuring pin 132 is screwed into the screw hole formed on the circumferential surface, and a washer-shaped magnet 136 is installed around the concave groove 134 formed on the outer surface, and the displacement measuring pipe 120 ), a movable member 130 disposed movably within the movable member 130, and a coil spring disposed within the displacement measuring pipe 120 so as to press the movable member 130 toward the cone head 103 from the outside of the movable member 130 140 and the threaded portion 126 formed on the inner circumferential surface of the other side of the displacement measuring pipe 120 to fix the coil spring 140 and push the movable member 130 toward the cone head 103 ( 152) is formed between the cover 140, the other side of the displacement measuring pipe 120 and the stepped portion of the cover 150, and the PC steel wire 101a of the earth anchor is fixed in position by the earth pressure applied to the earth anchor When the free end is pushed out of the incision, the reed switch 162 is switched on by the magnetic force line emitted from the magnet 136 of the movable member 130, and the first and second light emitting diodes LED1 and LED2 are turned on. A device for monitoring the displacement amount of an earth anchor is known, characterized in that it is composed of a display unit 160 that displays that the displacement amount of the earth anchor is equal to or greater than a certain value.

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In addition, Korean Registered Patent No. 10-1176220 (registration date August 16, 2012) has a strand 100; an internal deformable cylinder 200 having a through hole through which the strand 100 can be inserted and an internal measuring hole 210 formed from an outer surface to an inner surface thereof; The inside is through-holes so that the inner deformable cylinder 200 can be inserted, and an outer measuring hole 310 is formed from the outer surface to the inner surface, and the outer measuring hole 310 is connected to the inner measuring hole 210. an external non-deformable cylinder 300 formed at a corresponding position; and a pin gauge 400 for checking whether the positions of the inner measuring hole 210 and the outer measuring hole 310 coincide.

In addition, Korean Registered Patent No. 10-2363897 (registered on February 11, 2022) has one end fixed inside the drilled hole and the other end fixed with a tension member extending outside the slope or wall anchor head; a pressure plate installed between the anchor head and a slope or wall surface on which the perforation hole is formed to distribute the tension applied to the tension member over a wide surface; An insertion member installed between the anchor head and the acupressure plate and having a through hole through which a tension member passes therein; and a measurement member in the form of a cut elastic ring installed between the insertion member and the anchor head and having a hole for insertion into which the insertion member can be inserted while allowing the tension member to pass therethrough, The degree of insertion of the measurement member of the insertion member into the insertion hole varies according to the magnitude of the tension applied, and the size of the width at which the incised measurement part of the measurement member is widened varies in proportion to the degree of insertion. An earth anchor tension magnitude and tension change measuring device for measuring the magnitude and change of the tension force is known.

However, the above patents are manually measured by a mechanical method, and errors due to mechanical deformation occur, and in particular, since they are measured using a gauge method or a pin method, there are problems such as checking one by one.

In addition, Korean Patent Registration No. 10-1399976 (registered on May 21, 2014) is installed at a measurement point where a measurement amount is applied from the outside, generates a physical change amount in response to an external force applied to the measurement point, and converts the physical change amount into an electrical change amount. a measuring instrument that performs a measuring operation by converting; a light emitting body installed in the meter so that the light emitting state can be recognized with the naked eye and provided to display three types of colors; a protective cover installed on the meter to surround the light emitting body; a light-emitting body driving unit for emitting light of the light-emitting body according to an external control signal; A measured value having a unit corresponding to the measured amount is generated based on the electrical variation measured by the meter, and when the measured value exceeds a preset dangerous state reference value, the luminous body emits light in one of three colors. Controls the luminous body driving unit to emit light, and controls the luminous body driving unit so that the luminous body emits light in another color among three colors when the measured value is greater than or equal to a preset attention state display value and less than the dangerous state reference value, and the measured value A measured value status display type electrical measuring system is known, characterized in that it includes a measurement control unit for controlling the luminous body driver so that the luminous body emits light in the other one of three colors when it falls within the attention state display value. there is.

In addition, Korea Patent Registration No. 10-1626259 (registration date May 25, 2016) includes a deformable portion provided on the strand of the earth anchor and deformed by the tension applied to the strand; and a tension measuring unit configured to calculate the tension from the deformation of the transforming unit. The tension measurement unit calculates the tension based on a correlation between the deformation of the deformable portion and the tension, the deformable portion is formed in a spherical shape made of an elastic material, and the diameter of the deformable portion is increased by the tension. The tension measuring unit includes a plurality of tension measuring devices provided in a cylindrical shape so that the deformable part is inserted therein, and the plurality of tension measuring devices have different diameters.

However, the above conventional patents are a method of displaying the measured value state by an electric measuring system in LED color or measuring with a plurality of tension measuring devices, in addition to the mechanical method described above, in addition to the manual method, the LED method or tension measuring method Although it has been improved, there are still problems such as errors due to mechanical deformation and the need to check the measurement results individually, and the technical method for monitoring the tensile force of the earth anchors in multiple places is Since there was no situation at all, it was urgent to develop an earth anchor tension control system that is interlocked with the tension measurement system of the earth anchor tension device.

[Patent Document 001] Korean Registered Patent No. 10-0638884 (registration date: October 19, 2006) [Patent Document 002] Korean Registered Patent No. 10-0719176 (registration date May 10, 2007) [Patent Document 003] Korean Registered Patent No. 10-1176220 (registration date: August 16, 2012) [Patent Document 004] Korean Registered Patent No. 10-2363897 (registration date: February 11, 2022) [Patent Document 005] Korean Registered Patent No. 10-1399976 (registration date: May 21, 2014) [Patent Document 006] Korean Registered Patent No. 10-1626259 (registration date May 25, 2016)

The present invention is intended to solve the above conventional problems, as a calculation factor for measuring the magnitude of the tensile force applied to the tensile member of a plurality of earth anchor tensile members installed in the ground or the change in tensile force. In order to measure the change in the tensile length of the earth anchor tensile member, A laser distance meter is attached to the tensioning head of the tensioning device of a plurality of earth anchors, respectively, and a laser is fired at the upper end of the tensioning cylinder, which is disposed below the tensioning head and serves as a standard for measuring the tensioning length. By receiving light, the distance between the tension head and the tip of the tension cylinder is measured as the tensile length of the tensile steel wire, and the laser distance meter is wirelessly connected, and the tensile length measurement results of the plurality of earth anchors are displayed on the screen to monitor the earth anchor. It is configured to include a mobile terminal to individually control the tension device of the earth anchor, so that the death of a worker due to earth anchor rupture due to excessive tension of earth anchor or ground instability or collapse accident due to tension imbalance of each earth anchor can be prevented in advance. It is a task to be solved to provide a tensile length measurement system of an earth anchor tension device and a earth anchor tension control system using the same.

The present invention has been made to solve the above problems, and includes a tension piston coupled to move up and down by the hydraulic pressure of a tension cylinder, and a tension head coupled to an upper portion of the tension piston and formed with a plurality of tension through-holes through which a plurality of tension members pass. To measure the tensile length of the earth anchor tensioning device, a laser distance measuring module is attached to the upper surface of the tensioning head, and the laser distance measuring module is detachably attached to the rear surface of the laser distance measuring device to support a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; A permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tensile head: A tensile length measuring system of an earth anchor tensioning device comprising: is a means for solving the problem.

The rear surface of the laser distance meter is attached to and detached from the back plate with a detachable means including a Velcro fastener as a solution to the problem.

As a solution to the problem, the permanent magnet attached to the lower surface of the mounting bracket has a bolt means formed on the upper part of the permanent magnet passing through the mounting bracket, and fastening and attaching with a nut means on the upper surface of the mounting bracket.

As a solution to the problem, the light emitting and light receiving parts of the laser distance meter are positioned at the same level as the upper surface of the tension head while positioning the front end of the upper portion of the tension cylinder as a target.

In addition, the present invention includes a tension piston coupled to move up and down by the hydraulic pressure of the tension cylinder and a tension head coupled to the upper portion of the tension piston and formed with a plurality of tension through-holes through which a plurality of tension members pass Earth anchor tension In order to measure the tensile length of the device, a laser distance measuring module is attached to the upper surface of the tensile head, and the laser distance measuring module is detachably attached to the rear surface of the laser distance measuring device and supported by a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; A permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tensile head; and the laser distance meter is wirelessly connected to the smartphone to transmit the tensile length measurement result data of the earth anchor to the smart The data is transmitted to the phone, and the smartphone receives the data through an ios or Android-based app, outputs it to the screen, and monitors it while individually controlling the tension device of the earth anchor. Using the tensile length measurement system of the earth anchor tension device Earth anchor tension control system is used as a solution to the problem.

The tensile length measuring system of the earth anchor tensioning device of the present invention and the earth anchor tension control system using the same are a calculation factor for measuring the magnitude of tensile force applied to the tensile material of a plurality of earth anchors installed in the ground or the change in tensile force. Earth anchor as a calculation factor In order to measure the change in tension length of the tension member, a laser distance measurer is attached to the tension head of the tension device of the plurality of earth anchors, and the laser is applied to the upper tip of the tension cylinder, which is disposed below the tension head and serves as a standard for measuring the tension length. After firing, the reflected laser is received to measure the distance between the tension head and the tip of the tension cylinder as the tensile length of the tension steel wire, and wirelessly connected to the laser distance meter to measure the tensile length of the earth anchors at multiple locations Since the result is output to the screen and monitored, it is configured to include a mobile terminal so that the tension device of the earth anchor can be individually controlled, so that the excessive or insufficient tension of the tension device of the earth anchor of the plurality of places is adjusted or the lost tension is compensated. As a result, there is an excellent effect of maintaining a uniform tensile force of the earth anchor.

In addition, the tensile length measuring system of the earth anchor tensioning device and the earth anchor tension control system using the same of the present invention adjust the excessive or insufficient tensile force of the tensile device of the earth anchor in a plurality of places or supplement the lost tensile force to achieve a uniform As the tensile force of the earth anchor can be maintained, there is an excellent effect of preventing the death of workers due to the rupture of the earth anchor due to the excessive tension of the earth anchor or the ground instability or collapse accident due to the imbalance of the tension of each earth anchor.

1 is a structural diagram of an existing earth anchor
Figure 2 is a method for measuring the tensile length of a conventionally used earth anchor tensioning device
Figure 3 is a schematic diagram of the tensile length measuring system of the earth anchor tensioning device of the present invention
Figure 4 is a photo of the laser distance meter module used in the tension length measurement system of the earth anchor tension device of the present invention
Figure 5 is an upper perspective view of the tensile length measuring system of the earth anchor tensioning device of the present invention
Figure 6 is a bottom perspective view of the tensile length measuring system of the earth anchor tensioning device of the present invention
7 is a conceptual diagram of the earth anchor tension control system using the tensile length measurement system of the earth anchor tension device of the present invention

The present invention includes a tension piston coupled to move up and down by the hydraulic pressure of a tension cylinder and a tension head coupled to the upper portion of the tension piston and formed with a plurality of tension through-holes through which a plurality of tension members pass Earth anchor tensioning device To measure the tensile length of, a laser distance measuring module is attached to the upper surface of the tensile head, and the laser distance measuring module is detachably attached to the rear surface of the laser distance measuring device and supported by a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; The tensile length measurement system of the earth anchor tensioning device comprising: a permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tensile head is characterized by a technical configuration.

The rear surface of the laser distance meter is detachable from the back plate with a detachable means including a Velcro fastener.

The permanent magnet attached to the lower surface of the mounting bracket is characterized in that a bolt means formed on the upper part of the permanent magnet penetrates the mounting bracket and is fastened and attached with a nut means on the upper surface of the mounting bracket.

The feature of the technical configuration is that the light emitting and light receiving parts of the laser distance meter are positioned on the same level line as the upper surface of the tension head while positioning the front end of the upper portion of the tension cylinder as a target.

Also, the present invention. Measurement of the tensile length of an earth anchor tensioning device comprising a tensioning piston coupled to move up and down by the hydraulic pressure of a tensioning cylinder and a tensioning head coupled to the upper portion of the tensioning piston and formed with a plurality of tensioning through-holes through which a plurality of tensioning members pass. For this, a laser distance measuring module is attached to the upper surface of the tension head, and the laser distance measuring device module is detachably attached to the rear surface of the laser distance measuring device and supported by a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; A permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tensile head; and the laser distance meter is wirelessly connected to the smartphone to transmit the tensile length measurement result data of the earth anchor to the smart The data is transmitted to the phone, and the smartphone receives the data through an ios or Android-based app, outputs it to the screen, and monitors it while individually controlling the tension device of the earth anchor. Using the tensile length measurement system of the earth anchor tension device The earth anchor tension control system is a feature of the technical configuration.

Hereinafter, the present invention will be described in detail through the drawings so that those skilled in the art can easily practice it. However, the present invention may be embodied in many different forms and is not limited to the drawings described herein.

First, referring to FIGS. 3 to 6, the tension piston 102 coupled to move up and down by the hydraulic pressure of the tension cylinder 101 and a plurality of tension members coupled to the upper portion of the tension piston 102 In order to measure the tensile length of the earth anchor tensioning device 100, which includes a tensioning head 103 in which a plurality of tensioning through holes are formed through which 104 passes, a laser distance meter module on the upper surface of the tensioning head 103 (200) is attached, but the laser distance meter module 200 is detachably attached to the rear surface of the laser distance meter 201 and supports a back plate 202; a mounting bracket 203 bent and extended from the lower part of the back plate 202 at a right angle to the rear surface of the lower part of the laser distance meter 201 and mounted on the upper surface of the tension head 103; A permanent magnet 204 attached to the lower surface of the mounting bracket 203 so that the mounting bracket 203 is attached to the upper surface of the tension head 103 is configured to include.

At this time, the rear surface of the laser distance meter 201 may be attached or detached from the back plate 202 using a detachable means including a Velcro fastener.

In addition, the permanent magnet 204 attached to the lower surface of the mounting bracket 203 can be fastened and attached with a bolt means formed on the upper part of the permanent magnet passing through the mounting bracket 203 and a nut means on the upper surface of the mounting bracket. .

Here, the most important thing to pay attention to is that, as shown in [Fig. 5], the light emitting and receiving parts of the laser distance meter 201 are positioned at the upper end of the tension cylinder 101 as a target, and at the same time the tension head 103 It is important that it is positioned flush with the upper surface. This setting is to prevent the error range of tensile length measurement.

Meanwhile, in the present invention, the tension piston 102 coupled to move up and down by the hydraulic pressure of the tension cylinder 101 and a plurality of tension through-holes coupled to the upper portion of the tension piston 102 and through which a plurality of tension members 104 pass through are provided. In order to measure the tensile length of the earth anchor tensioning device 100 composed of the formed tensioning head 103, the laser distance measuring module 200 is attached to the upper surface of the tensioning head 103, but the laser distance measuring device The module 200 includes a back plate 202 that is detachably attached to and supported on the rear surface of the laser distance meter 201; a mounting bracket 203 bent and extended from the lower part of the back plate 202 at a right angle to the rear surface of the lower part of the laser distance meter 201 and mounted on the upper surface of the tension head 103; A permanent magnet 204 attached to the lower surface of the mounting bracket 203 so that the mounting bracket 203 is attached to the upper surface of the tension head 103, and the laser distance meter 201 is configured to include [Fig. 7], it is wirelessly connected to the smartphone to transmit the tensile length measurement result data of the earth anchor to the smartphone, and the smartphone receives the data through an ios or Android-based app and outputs it to the screen It is preferable to be configured to individually control the tensioning device of the earth anchor while monitoring the same by adjusting the excessive or insufficient tension of the tensioning device of a plurality of earth anchors or by supplementing the lost tension. Because it can maintain tension.

As described above, the tensile length measurement system of the earth anchor tensioning device and the earth anchor tension control system using the same of the present invention adjust the excessive or insufficient tensile force of the tensile device of the earth anchor in a plurality of places or compensate for the lost tensile force. As the tensile force of the earth anchor can be maintained uniformly, there is an excellent effect of preventing the death of a worker due to the rupture of the earth anchor due to the excessive tension of the earth anchor or the ground instability or collapse accident due to the imbalance of the tensile imbalance of each earth anchor. do.

The above description is only illustrative of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the drawings disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these drawings. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: earth anchor tension device 101: tension cylinder
102: Tension Piston 103: Tension Head
104: a plurality of tension members 200: laser distance measuring module
201: laser distance meter 202: back plate
203: mounting bracket 204: permanent magnet

Claims (6)

Measurement of the tensile length of an earth anchor tensioning device comprising a tensioning piston coupled to move up and down by the hydraulic pressure of a tensioning cylinder and a tensioning head coupled to the upper portion of the tensioning piston and formed with a plurality of tensioning through-holes through which a plurality of tensioning members pass. For this, a laser distance measuring module is attached to the upper surface of the tension head, and the laser distance measuring device module is detachably attached to the rear surface of the laser distance measuring device and supported by a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; A permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tension head;
In the permanent magnet attached to the lower surface of the mounting bracket, a bolt means formed on the upper part of the permanent magnet penetrates the mounting bracket, and is fastened and attached with a nut means on the upper surface of the mounting bracket.
The light emitting and light receiving parts of the laser distance meter are positioned at the upper end of the tension cylinder as a target and at the same time set on the same level as the upper surface of the tension head. Tension length measuring system of earth anchor tensioning device, characterized in that
According to claim 1,
The rear surface of the laser distance meter is detachable to the back plate with a detachable means including a Velcro fastener.
delete delete Measurement of the tensile length of an earth anchor tensioning device comprising a tensioning piston coupled to move up and down by the hydraulic pressure of a tensioning cylinder and a tensioning head coupled to the upper portion of the tensioning piston and formed with a plurality of tensioning through-holes through which a plurality of tensioning members pass. For this, a laser distance measuring module is attached to the upper surface of the tension head, and the laser distance measuring device module is detachably attached to the rear surface of the laser distance measuring device and supported by a back plate; a mounting bracket bent and extended from the lower part of the back plate at a right angle in the rear direction of the lower part of the laser distance meter and mounted on the upper surface of the tension head; A permanent magnet attached to the lower surface of the mounting bracket so that the mounting bracket is attached to the upper surface of the tensile head; and the laser distance meter is wirelessly connected to the smartphone to transmit the tensile length measurement result data of the earth anchor to the smart Claim 1 or 3, characterized in that the data is transmitted to a phone, and the smartphone receives the data through an ios or Android-based app, outputs the data to a screen, and controls the tension device of the earth anchor individually while monitoring. Earth anchor tension control system using the tensile length measurement system of earth anchor tension device according to
According to claim 5,
The earth anchor tension control system using the tensile length measurement system of the earth anchor tension device adjusts the excessive or insufficient tension of the tension devices of the earth anchors in a plurality of places, or compensates for the lost tension, thereby maintaining the uniform tension of the earth anchor. As it can be maintained, it is possible to prevent worker death due to earth anchor rupture due to earth anchor excessive tension or ground instability or collapse accident due to each earth anchor tension imbalance Tensile length of earth anchor tension device, characterized in that it can be maintained Earth anchor tension control system using a measuring system

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