WO2015080535A1

WO2015080535A1 - Cable connector inspection device and cable connector inspection method

Info

Publication number: WO2015080535A1
Application number: PCT/KR2014/011598
Authority: WO
Inventors: 은승환; 양영규; 유원상; 김종해; 박창건
Original assignee: 엘에스전선 주식회사
Priority date: 2013-11-28
Filing date: 2014-11-28
Publication date: 2015-06-04

Abstract

The present invention provides a cable connector inspection device and a cable connector inspection method, the device comprising: a sensor head part for detecting an interface between a sleeve and a cable or the inside of the sleeve; and a first transfer part for rotating the sensor head part to the perimeter of an outer side portion of the sleeve, wherein the sensor head part sprays a couplant medium between the sensor head part and the sleeve.

Description

Cable connector inspection device and cable connector inspection method

One embodiment of the present invention relates to a cable connection member inspection apparatus and a cable connection member inspection method.

As large-scale demand centers are formed around the overcrowded areas due to population concentration in large cities, the necessity of large-capacity transmission in urban areas is increasing day by day, but it is impossible to secure the transition point of overhead transmission lines in urban areas. Construction of underground transmission lines in urban areas is gradually increasing due to impediments and problems in facilities, security and maintenance. For this reason, a large number of underground power transmission facilities have been installed and operated around large cities in developed countries, and ultra-high voltage underground power cables have been manufactured accordingly.

In general, the manufacture of ultra-high voltage underground power cable is not to produce the entire length of the power section, but to produce a cable with a constant length of 200 ~ 300 m and install it in the underground power section. Between the installed power cable and the power cable is formed of a connecting material, is drawn to the outside through the underground termination junction box and connected to the electrical equipment and the like. In addition, in the case of distribution cables, as well as the ultra-high voltage underground power cable, it does not produce the entire length of the power section, but produces a cable having a certain length and installs it in the power section, and the installed power cables may be connected by the above-described connection member. have.

The connecting material surrounding the two power cables and connecting them to each other includes a prefabricated type joint (PJ), a silicone rubber (SR), or an ethylene propylene rubber (PJ) that maintains mechanical and electrical performance by a combination of an epoxy insulator and a rubber stress cone. Pre-molded Joints (PMJ) are mainly used as the main insulation of Ethelene Prophilene Rubber (EPR).

14 is a cutaway perspective view schematically illustrating a form in which the PMJ 20 is coupled to the cable 10.

Referring to FIG. 14, the PMJ 20 surrounds two cables 10 in which the insulating layer 14, the internal semiconducting layer 13, the element wire 11, and the like are exposed. More specifically, the two

cables

10a, 10b are wired 11a, 11b, i.e., the conductors are crimped by welding or crimping sleeves to be connected to the conductors and then covered with the corona shield 32. Here, the corona shield 32 is electrically connected to the portion connected to the conductor. In addition, the corona shield 32 may be formed to surround the pressing sleeve 31 and the inner

semiconductive layers

13a and 13b. That is, the corona shield 32 may be formed to extend to contact the end faces of the insulating layers 14a and 14b of the two

cables

10a and 10b while surrounding the crimp sleeve 31 and the inner

semiconductive layers

13a and 13b. have. The corona shield 32 may be formed so as not to cause a step with the insulating layers 14a and 14b. Thereafter, the sleeve 21 of the PMJ 20 may be formed to surround the insulating layer 13 and the corona shield 32. The sleeve 21 is mainly made of a silicon material, and may use liquid silicon rubber. The sleeve 21 may be composed of a body portion 21a, a first contact portion 21b, and a second contact portion 21c. The body portion 21a is made of an insulating material, and may be made of silicon as an example. The first contact portion 21b and the second contact portion 21c may include a semiconductive material such as carbon black. The first contact portion 21b may be formed to surround the entire outer surface of the corona shield 32 and surround a boundary portion between the corona shield 32 and the insulating layers 14a and 14b. Since the first contact portion 21b is made of a semiconductive material, it is possible to prevent the electric field concentration phenomenon that may occur at the interface between the corona shield 32 and the insulating layer 14. The second contact portion 21c is disposed at both ends of the sleeve 21 and is formed to extend toward the outer surface of the sleeve 21 in the sleeve 21 while contacting the outer semiconducting layer exposed by the

cables

10a and 10b. Can be. The second contact portion 21c may also mitigate electric field concentration that may occur at the ends of the

metal sheaths

15a and 15b like the first contact portion 21b.

At this time, since the quality inspection is performed in various ways in the manufacturing process of the power cable, there is almost no problem, but the connection material to which the power cable is connected at the construction site is difficult to manage the construction, For example, the method of effectively detecting voids or foreign substances at the interface between the cable and the connecting member is limited, which causes a power cable accident due to the insulation breakdown of the connecting member.

In connection with this, a connection member inspection apparatus for detecting voids or foreign substances present at an interface between a cable and a connection member has been developed, and Japanese Unexamined Patent Publication No. 2956917 discloses a method and apparatus for detecting an ultrasonic detection position of a cable defect portion. have. The invention described in Japanese Patent Publication No. 2956917 relates to a non-destructive method for detecting cable defects such as insulation breakdown using ultrasonic waves, where an ultrasonic signal is incident into a cable at one side, and an ultrasonic signal is received at a cable end or the like to locate the defect portion. Disclosing a configuration is disclosed.

However, Japanese Patent No. 2956917 does not detect foreign matter at the interface between the cable and the connecting member, but detects foreign matter between the sheath of the cable and the conductor, and the member for transmitting the ultrasonic signal and the member for receiving the ultrasonic signal are separated from each other. In that the ultrasonic signal transmitting member transmits the ultrasonic signal on the sheath of the cable and the ultrasonic signal receiving member is disposed at one end of the cable to receive the ultrasonic signal in that the connecting member and the power cable are already connected. It is difficult to apply to detect foreign matter in between.

In addition, the invention of Japanese Patent No. 3590213 discloses a method for inspecting foreign matters and the like at the joints between pipes when replacing city gas pipes, hot water pipes, and the like with XLPE resin pipes. However, the invention of Japanese Patent No. 3590213 does not disclose or imply any method of detecting foreign matter between the connecting member and the power cable in the power cable to which the connecting member is already connected.

The main object of the present invention is to provide a cable connection member inspection device and a cable connection member inspection method capable of inspecting an interface between the cable and the connection member in a state where the power cable connection member and the cable are already connected.

In the cable connection member inspection apparatus according to an embodiment of the present invention, when two cables separated from each other by a sleeve of the connection member is connected, in the cable connection member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve; The cable connection member inspection device may include: a sensor head unit configured to detect an interface between the sleeve and the cable or an inside of the sleeve; The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And a first transfer part for rotating the sensor head part around an outer portion of the sleeve; It may be provided.

The sensor head unit may include: a sensor unit generating ultrasonic waves toward the sleeve and detecting the reflected ultrasonic waves; A sensor support for fixing the sensor unit; And a coupling part which fixes the sensor support part and couples with the first transfer part. It may be provided.

In the present invention, the sensor unit is composed of a plurality of cells, each of the cells may generate ultrasonic waves with a time difference, and receive the reflected ultrasonic waves.

In the present invention, the sensor support unit, a support frame for supporting the sensor unit; A sensor fixing part disposed between the support frame and the sensor part to fix the sensor part; And a pillar portion extending from one end of the support frame and fixed by the coupling portion. It may be provided.

In the present invention, the support frame, the outer jig frame connected to one end of the pillar portion; An inner jig frame disposed inside the outer jig frame to be tilted with respect to the outer jig frame based on a length direction of the sleeve; And an elastic member disposed between the outer jig frame and the inner jig frame to provide an elastic force to the inner jig frame. It may be provided.

In the present invention, the sensor fixing portion has an inlet portion in which the contact medium is introduced on one side, and an outlet portion in which the contact medium is discharged on the other side, and the contact medium can reduce friction between the sensor portion and the sleeve. have.

In the present invention, the first sensor fixing member is composed of a first fixing member and a second fixing member, the second sensor fixing member is composed of a third fixing member and a fourth fixing member, and the first fixing member The sensor unit is disposed on one side thereof, and the second fixing member is disposed on the other side thereof, and the third fixing member has the sensor unit disposed on one side thereof, and the fourth fixing member is disposed on the other side thereof to fix the first fixing member. The sensor unit may be disposed between the member and the second fixing member.

In the present invention, the second fixing member has a first concave portion formed toward the other side from one side of the second fixing member in contact with one side of the first fixing member, the fourth fixing member is One side of the third fixing member which is in contact with one side of the third fixing member may have a second recess formed toward the other side.

In the present invention, the first concave portion may be formed long along the length direction of the second fixing member, and the second concave portion may be formed long along the length direction of the fourth fixing member.

In the present invention, each of the second fixing member and the fourth fixing member may include a guide portion protruding toward the sleeve from a lower surface thereof.

In the present invention, when the guide portion is in contact with the sleeve, the sensor portion may be disposed between the first fixing member and the second fixing member to be spaced apart from the sleeve.

In the present invention, the pressing portion may be an air pressure or a hydraulic cylinder.

In the present invention, the pressure is applied to the sensor head portion to the sleeve may be approximately 0.2 to 0.9MPa.

In the cable connecting member inspection apparatus according to another embodiment of the present invention, when two cables separated from each other by a sleeve of the connecting member is connected, in the cable connecting member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve The cable connection member inspection device may include: a sensor head unit configured to detect an interface between the sleeve and the cable or an inside of the sleeve; The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And a first transfer part for rotating the sensor head part around an outer portion of the sleeve; The sensor head unit may spray a contact medium therebetween.

In the present invention, it may be made of a material having an acoustic impedance between the acoustic impedance of the sleeve and the acoustic impedance of the sensor unit.

In the present invention, the contact medium may be glycerin.

In the present invention, the sensor head portion may be configured to tilt in the longitudinal direction of the sleeve.

The apparatus for inspecting a cable connection member according to the present invention, further comprising a second transfer part for moving the sensor head part in the longitudinal direction of the sleeve.

In the present invention, it may further include a second transfer unit for moving the sensor head in the longitudinal direction of the sleeve.

According to another embodiment of the present invention, an apparatus for inspecting a cable joint member includes a cable joint member inspecting apparatus for inspecting an interface between the sleeve and a cable or an inside of the sleeve when two cables separated from each other by a sleeve of the joint member are connected. The cable connection member inspection apparatus may include: a sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve; The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And a first transfer part for rotating the sensor head part around an outer portion of the sleeve; The sensor head unit may be configured to tilt in the longitudinal direction of the sleeve.

In the present invention, the sensor fixing part is composed of a first sensor fixing member and a second sensor fixing member respectively disposed on both sides of the sensor unit, the sensor unit between the first sensor fixing member and the second sensor fixing member. Can be fixed.

According to another embodiment of the present invention, an apparatus for inspecting a cable joint member includes a cable joint member inspecting apparatus for inspecting an interface between the sleeve and a cable or an inside of the sleeve when two cables separated from each other by a sleeve of the joint member are connected. The cable connection member inspection apparatus may include: a sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve; A first conveying portion for rotating the sensor head portion around an outer portion of the sleeve; A second transfer part for moving the sensor head part in the longitudinal direction of the sleeve; And a pressurizing portion for applying pressure toward the sleeve to be in close contact with the sleeve through air pressure or hydraulic pressure. It may be further provided.

In the present invention, the first transfer unit is coupled to the sensor support, the rail for rotating around the outer portion of the sleeve; A first guide guiding rotation of the rail, the first guide being spaced apart from the outer part of the sleeve; And a first actuator providing a driving force for rotating the rail. It may be provided.

In the present invention, the first guide and the rail is formed of at least two members so that the members can be coupled by a fastening means.

In the present invention, the rail is surrounded by an outer portion of the sleeve and spaced apart from the outer portion, a thread is formed on the outer surface, the screw thread may be rotated by receiving the driving force of the first actuator.

In the present invention, the second transfer unit, the block is connected to the first transfer unit and moves in the longitudinal direction of the sleeve together with the first transfer unit; A connecting part for fixing the block to the first conveying part; And a second guide providing a movement path of the block. A second actuator for providing a driving force to the block so that the block can move; It may be provided.

In the cable connecting member inspection method according to an embodiment of the present invention, in the cable sleeve inspection method for inspecting the interface of the sleeve and the cable of the connection member or the inside of the sleeve using a sensor head portion, the sensor head portion is the outer portion of the sleeve Sensing along with rotation; And pressing the sensor head toward the sleeve to be in close contact with the sleeve during the rotation sensing step. It may be provided.

In the present invention, in the step of sensing while rotating the sensor head portion along the outer portion of the sleeve, a contact medium may be injected between the sensor head portion and the sleeve.

In the present invention, the sensor head portion can be tilted in the longitudinal direction of the sleeve as the axis to be in close contact with the sleeve in the sensing step while rotating along the outer portion of the sleeve.

In the present invention, the sensor head portion may further comprise the step of moving in the longitudinal direction of the sleeve after sensing while rotating along the outer portion of the sleeve.

The sensor head unit may include: a sensor unit generating ultrasonic waves toward the sleeve and detecting the reflected ultrasonic waves; A sensor support for fixing the sensor unit; And a coupling part which fixes the sensor support part and couples with the first transfer part. When the sensor head portion is in close contact with the sleeve, the sensor support portion is in contact with the sleeve, but the sensor portion may be fixed by the sensor support portion to be spaced apart from the sleeve.

According to another aspect of the present invention, there is provided a method for inspecting a cable connecting member, wherein the sensor head unit is configured to inspect an interface between a sleeve of a connecting member and a cable or an inside of the sleeve using a sensor head unit. Sensing along the rotation in the first direction; Moving the sensor head part in the longitudinal direction of the sleeve after sensing in the first direction; And sensing by moving in a length direction of the sleeve and rotating in a second direction opposite to the first direction. The sensor head may be pressed toward the sleeve to be in close contact with the sleeve in the sensing step in the first direction or the second direction.

In the present invention, the sensor head portion may be sprayed with a contact medium between the sensor head portion and the sleeve in the sensing step while rotating in the first direction along the outer portion of the sleeve.

In the present invention, the sensor head portion may be tilted about the longitudinal direction of the sleeve as the axis to be in close contact with the sleeve in the sensing step in the first direction or the second direction.

According to an embodiment of the present invention, defects in the inside of the sleeve and the interface between the sleeve and the cable may occur during completion and operation not only before the sleeve of the connecting member is connected to the cable but also after energization after the sleeve is connected with the cable. This prevents track accidents in sleeves and cables.

In addition, according to an embodiment of the present invention, the sensor unit can be more closely contacted with the sleeve to improve the accuracy of the detection.

1 is a perspective view schematically showing a cable connection member inspection apparatus according to an embodiment of the present invention.

2 is a perspective view schematically showing a sensor head part.

3 is a perspective view schematically showing a sensor support;

4 is a bottom perspective view schematically illustrating the sensor unit.

5 is a plan perspective view schematically showing a sensor unit.

6 is a bottom view schematically illustrating a sensor unit.

7 is a perspective view schematically illustrating a sensor fixing part.

8 is an exploded perspective view schematically illustrating a sensor fixing part.

9 is a bottom view illustrating a state in which the sensor unit and the sensor fixing unit are combined.

10 is a perspective view schematically illustrating a first guide and a rail of the first transfer unit;

11 is a perspective view schematically illustrating a state in which the first guide is separated.

12 is a perspective view schematically illustrating a state in which a rail is separated.

13 is a perspective view schematically illustrating the first actuator.

14 is a partial perspective view schematically showing a cable connecting member.

15 is a flowchart schematically illustrating a cable test method according to an embodiment of the present invention.

16 is a perspective view schematically showing another modification of the sensor head portion.

17 is a front view schematically illustrating the sensor head of FIG. 17.

FIG. 18 is a diagram illustrating that the sensor head of FIG. 2 is disposed on a sleeve.

FIG. 19 is a diagram illustrating that the sensor head portion of FIG. 17 is disposed on a sleeve.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

Referring to FIG. 1, the apparatus for inspecting a cable connection member 100 according to an embodiment of the present invention may include a sensor head unit 110, a first transfer unit 120, and a second transfer unit 130.

The sensor head 110 may detect an interface between the sleeve 21 and the cable 10 or the inside of the sleeve 21. The sensor head 110 may move along the outer surface of the sleeve 21 to detect defects at the interface between the sleeve 21 and the cable 10, for example, foreign matter or voids at the interface. have. As shown in FIG. 1, the sensor head unit 110 may detect the interface between the sleeve 21 and the cable 10 in a state in which the sleeve 21 and the cable 10 are coupled to each other, as well as the cable 10. The inside of the sleeve 21 before being combined with) may also be detected. This will be described later.

2 is a perspective view schematically illustrating the sensor head unit 110. Referring to FIG. 2, the sensor head unit 110 may include a sensor unit 111, a sensor support unit 110-1, and a coupling unit 117.

The sensor unit 111 may be an ultrasonic sensor. The ultrasonic sensor may be of a contact type that is in close contact with the outer surface of the sleeve 21 that is the object and inspects it. As an example, the sensor unit 111 may be a phased array ultrasonic sensor. The phased array ultrasonic sensor may be configured in a state in which 64 to 256 cells are arranged. Each of the cells may generate ultrasonic waves with a time difference, and receive ultrasonic waves reflected at the inside of the sleeve 21 or at the interface between the sleeve 21 and the cable 10.

The sensor unit 111 is fixed by the sensor support unit and is in close contact with the outer surface of the sleeve 21, and may move the ultrasonic wave into the sleeve 21 while moving along the outer surface of the sleeve 21. In addition, the sensor unit 111 may receive ultrasonic waves reflected from the sleeve 21 or from an inner interface between the sleeve 21 and the cable 10. That is, the transmission and reception of the ultrasonic wave may be made in the sensor unit 111 according to an embodiment of the present invention.

The intensity of the ultrasonic wave oscillated by the sensor unit 111 and the intensity of the reflected ultrasonic wave may be transmitted to the ultrasonic measurement module 140. The ultrasonic measurement module 140 may detect the defect of the interface in the sleeve 21 or the interface between the sleeve 21 and the cable 10 by comparing the intensity or time of the reflected ultrasonic waves. More specifically, the sensor unit 111 may not only reflect ultrasonic waves in the sleeve 21 or at the interface between the sleeve 21 and the cable 10, but also in the sleeve 21 or between the sleeve 21 and the cable 10. Ultrasonic waves reflected from the foreign material present at the interface of the can be received. The intensity of the ultrasonic wave reflected from the foreign matter or damaged part is different from the intensity of the ultrasonic wave reflected from the normal part, so that the ultrasonic measurement module 140 measures the intensity of the ultrasonic wave reflected from the foreign material and the ultrasonic wave reflected from the foreign material. In comparison, foreign matter at the interface 21 or at the interface between the sleeve 21 and the cable 10 can be detected. In addition, the ultrasonic wave reflected from the foreign matter or damaged portion is different from the reflected wave reflected from the foreign matter or damaged portion and returned to the sensor portion 111 is reflected in the normal portion and returned to the sensor portion 111. The measurement module 140 compares the reflected back time of the ultrasonic waves reflected from the foreign material and the ultrasonic waves reflected from the foreign material, and the foreign material at the interface between the sleeve 21 and the cable 10 and the sleeve 21. Can be detected.

4 to 6 are diagrams illustrating an embodiment of the sensor unit 111. In detail, FIG. 4 is a bottom perspective view schematically illustrating the sensor unit 111, FIG. 5 is a top perspective view schematically illustrating the sensor unit 111, and FIG. 6 is a bottom view schematically illustrating the sensor unit 111. to be.

4 to 6, the sensor unit 111 may include a housing 111b that accommodates the cell 111a. The housing 111b has an empty space therein, and a lower portion thereof may have an open structure. The cell 111a may be disposed in an inner space of the housing 111b and may be exposed to the outside and contact the sleeve 21 through an open opening in the lower portion of the housing 111b.

As an example, referring to FIGS. 4 to 6, the housing 111b may include two protrusions 111c on one side thereof and two protrusions 111c on the other side thereof. The present invention is not limited thereto, and the housing 111b may include a plurality of protrusions 111c on both sides thereof.

The protrusion 111c may be accommodated in a recess (112m in FIG. 7) of the sensor fixing part 112, and after the protrusion 111c is accommodated in the accommodating part 112m, the sensor part may be fastened by the fastening means 111e. 111 may be fixed to the sensor fixing part 112.

The sensor support 110-1 may fix the sensor 111 to be in close contact with the sleeve 21. 3 is a perspective view schematically illustrating the sensor support 110-1. Referring to FIG. 3, the sensor support part 110-1 may include support frames 113 and 114,

sensor fixing parts

112a and 112b, and a pillar part 116.

The support frames 113 and 114 may function to support and fix the sensor unit 111 together with the

sensor fixing units

112a and 112b. The support frames 113 and 114 may include an outer jig frame 113 and an inner jig frame 114. The inner jig frame 114 is positioned inside the outer jig frame 113, and may be fastened to the outer jig frame 113 to be tilted with respect to the outer jig frame 113 with respect to the longitudinal direction of the sleeve 21. .

More specifically, the inner jig frame 114 and the outer jig frame 113 has a through-shaped frame shape, the inner jig frame 114 is formed smaller than the outer jig frame 113 in size, the outer jig frame ( 113) may be disposed inside. In addition, the inner jig frame 114 and the outer jig frame 113 may be connected by the fastening means a in the longitudinal direction of the sleeve 21. Although not shown in the drawings, the inner jig frame 114 and the outer jig frame 113 may be connected to each other by symmetry with the fastening means (a) by other fastening means. The inner jig frame 114 connects the fastening means (a) by connecting the inner jig frame 114 and the outer jig frame 113 while the two fastening means are positioned facing each other in the longitudinal direction of the sleeve 21. It may have a degree of freedom that is tilted.

Therefore, even when the support frames 113 and 114 move the outer circumferential surface of the sleeve 21 rather than the epicenter, the inner jig frame 114 has a degree of freedom along the longitudinal direction of the sleeve 21, so the inner jig frame 114 The adhesion to the outer circumferential surface of the sleeve 21 of the sensor unit 111 that is fixed at) can be improved.

An elastic member 119 may be disposed between the outer jig frame 113 and the inner jig frame 114. As shown in FIG. 3, one end of the elastic member 119 may be connected to the inner jig frame 114, and the other end thereof may be connected to the ring 115 protruding from the outer jig frame 113. As such, the elastic member 119 disposed between the outer jig frame 113 and the inner jig frame 114 provides elastic force to the inner jig frame 114, so that the inner jig frame 114 is the outer jig frame 113. If misaligned with respect to the inner jig frame 114, the inner jig frame 114 may be returned to a position aligned with the outer jig frame 113.

The sensor fixing part 112 may be disposed between the internal jig frame 114 and the sensor part 111 to fix the sensor part 111. The sensor fixing part 112 may include first and second

sensor fixing members

112a and 112b disposed at both sides of the sensor part 111, respectively. More specifically, as shown in FIG. 2, the sensor unit 111 may be fixed between the first sensor fixing member 112a and the second sensor fixing member 112b in the inner jig frame 114. .

Each of the first and second

sensor fixing members

112a and 112b may be connected to the inner jig frame 114 by the fastening means b in the circumferential direction of the sleeve 21. Referring to FIG. 3, the fastening means b passes through the through-holes of the outer jig frame 113 penetrated in the circumferential direction of the sleeve 21 (the Y-axis direction of FIG. 1), so that the first and second sensor fixing members ( 112a and 112b may be coupled to the internal jig frame 114. Accordingly, the first and second

sensor fixing members

112a and 112b and the sensor unit 111 may have degrees of freedom tilted around the circumferential direction of the sleeve 21.

As described above, the inner jig frame 114 in the outer jig frame 113 has a degree of freedom along the longitudinal direction of the sleeve 21, and the sensor fixing part 112 in the inner jig frame 114 has a sleeve ( Since the circumferential direction of the shaft 21 has a degree of freedom, the adhesion of the sensor 111 to the outer circumferential surface of the sleeve 21 may be improved.

7 is a perspective view schematically illustrating the first sensor fixing member 112a, and FIG. 8 is an exploded perspective view schematically illustrating the first sensor fixing member 112a. 9 is a bottom view illustrating a state in which the sensor unit 111 and the sensor fixing unit 112 are coupled to each other.

The sensor fixing part 112 of FIG. 1 may include a first sensor fixing member 112a and a second sensor fixing member 112b, and each of the first and second

sensor fixing members

112a and 112b has two fixing members. (112a1, 112a2; 112b1, 112b2) may be formed in a coupled form to the fastening means.

For example, referring to FIGS. 7 to 9, the first sensor fixing member 112a may be formed of the first fixing member 112a1 and the second fixing member 112a2, and the second sensor fixing member 112b may be formed. The third fixing member 112b1 and the fourth fixing member 112b2 may be formed. The first fixing member 112a1 and the second fixing member 112a2 may be formed separately and combined, and the third fixing member 112b1 and the fourth fixing member 112b2 may be formed separately and combined.

The first fixing member 112a1 may have the sensor unit 111 located on one side thereof, and the second fixing member 112a2 may be located on the other side thereof. The third fixing member 112b1 may have the sensor 111 located at one side thereof, and the third fixing member 112b2 may be positioned at the other side thereof. That is, the first fixing member 112a1 and the third fixing member 112b1 are disposed at both sides of the sensor unit 111, respectively, and the second fixing member 112a2 is coupled to the outer surface of the first fixing member 112a1. The fourth fixing member 112b2 may be coupled to an outer surface of the third fixing member 112b2.

The first fixing member 112a1 (or the third fixing member 112ba) may include a receiving unit 112m at one side where the sensor unit 111 is located. The accommodating part 112m may be formed to accommodate the protrusion 111c formed at the side of the housing 111b of the sensor part 111.

A through hole 112g may be formed on the first fixing member 112a1 (or the third fixing member 112ba). The through hole 112g faces downward from the upper surface of the first fixing member 112a1 (or the third fixing member 112ba) and may be formed up to the receiving portion 112m. After the protrusion 111c is accommodated in the accommodating part 112m, the fastening means (111e in FIG. 4) may be inserted through the through hole 112g, and the fastening means 111e is fastened to the protrusion 111c to fix the first. The sensor unit 111 may be fixed to the member 112a1 (or the third fixing member 112ba).

A through hole 112f may be formed at one side of the second fixing member 112a2 (or the fourth fixing member 112b2). The through hole 112f is formed toward the first fixing member 112a1 (or the third fixing member 112b1) from the outer surface of the second fixing member 112a2 (or the fourth fixing member 112b2). The first fixing member 112a1 (or the third fixing member 112b1) may be formed up to the inside.

A fastening means 112k is inserted into the through hole 112f to fasten the second fixing member 112a2 and the first fixing member 112a1 (or the fourth fixing member 112b2 and the third fixing member 112b1). Can be.

FIG. 16 is a perspective view schematically showing another modification of the sensor head portion, and FIG. 17 is a front view schematically showing the sensor head portion of FIG. 17.

16 and 17, the second fixing member 112 ′ a2 and the fourth fixing member 112 ′ b2 constituting the sensor head 110 ′ shown in FIGS. 16 and 17 are guide portions 112, respectively. 'a3, 112'b3) is different from the sensor head 110 shown in Figs.

More specifically, the guide portions 112'a3 and 112'b3 protrude convexly toward the sleeve 21 at the bottom of each of the second fixing member 112'a2 and the fourth fixing member 112'b2. It may have a shape. When the sensor head 110 ′ is disposed on the sleeve 21, the second fixing member 112 ′ a2 and the fourth fixing member 112 ′ a3 and 112 ′ b3 protrude toward the sleeve 21. The fixing member 112 ′ b2 is in contact with the sleeve 21, but the sensor 111, the first fixing member 112 ′ a1, and the third fixing member 112 ′ b1 are not in contact with the sleeve 21. Can be. As shown in FIGS. 16 and 17, the guide portions 112 ′ a3 and 112 ′ b3, which are the bottoms of the second fixing member 112 ′ a2 and the fourth fixing member 112 ′ b2, are formed on the first fixing member 112 ′. a1), the third fixing member 112 ′ b1, and the sensor unit 111 may be disposed below to maintain a gap between the sleeve 21 and the sensor unit 111.

In FIG. 17, the distance g3 between the second fixing member 112 ′ a2 and the sensor unit 111 is the distance g1 between the second fixing member 112 ′ a2 and the first fixing member 112 ′ a1. Although shown as being smaller than the present invention, the present invention is not limited thereto, and the distance g3 between the second fixing member 112 ′ a2 and the sensor unit 111 is fixed to the second fixing member 112 ′ a2 and the first fixing member. It may be larger than the gap g1 between the members 112'a1. In this case, the distance between the sensor 111 and the sleeve 21 is larger than the case shown in FIG.

FIG. 18 is a view showing that the sensor head portion of FIG. 2 is disposed on the sleeve, and FIG. 19 is a view showing that the sensor head portion of FIG. 17 is disposed on the sleeve.

Referring to FIG. 18, the sensor head 110 of FIG. 2 includes a first fixing member 112a1, a second fixing member 112a2, a third fixing member 112b1, a fourth fixing member 112b2, and a sensor. Since the bottom surface of the part 111 is coplanar, when disposed on the sleeve 21, the sensor part 111 positioned at the center of the sensor head part 110 comes into contact with the slitting part 21.

In contrast, the sensor head 110 ′ shown in FIGS. 16 and 17 has a cylindrical shape because the guide parts 112 ′ a3 and 112 ′ b3 protrude downward from the bottom surface S2 of the sensor part 111. The guide portions 112'a3 and 112'b3 are in contact with the sleeve 21 on the sleeve 21 of the sensor 21 and the sensor portion 111 is spaced apart from the sleeve 21.

As such, in one embodiment of the present invention, the sensor unit 111 is disposed between the guide parts 112'a3 and 112'b3 between the second fixing member 112'a2 and the fourth fixing member 112'b2. And the distance between the sleeve 21 and the sensor unit 111 can be adjusted by changing the position of the sensor unit 111 up and down. The detection capability of the sensor 111 may be different depending on the distance between the sensor 111 and the sleeve 21. The more precise inspection is performed by adjusting the distance between the sleeve 21 and the sensor 111. Is possible.

In addition, since the guide parts 112'a3 and 112'b3 are convex, the sensor head part 110 'is a slitting part 21 because the contact parts are in line with the sleeve 21 and the contact area with the sleeve 21 is minimized. The frictional resistance can be reduced when rotating on the bed.

The sensor fixing part 112 may have a slit-shaped outlet 112j formed at a bottom portion facing the sleeve 21, and an inlet 112d may be formed at the other side thereof. More specifically, referring to FIGS. 7 and 8, an inlet part through which a contact medium may be introduced onto the first fixing member 112a1 (or the third fixing member 112b1) disposed on one side of the sensor unit 111. 112d may be formed. As shown in FIG. 1, the inlet 112d may be connected to a flow tube 40 through which a contact medium may flow. Although not shown in the drawing, one end of the flow tube 40 is connected to a tank for storing the contact medium, and the contact medium may be introduced into the inlet 112d through the flow tube 40 in the tank.

An outlet portion 112j may be formed on the rear surfaces of the first and second

sensor fixing members

112a and 112b, that is, the lower surface facing the sleeve 21 to allow the contact medium to flow out. In detail, the contact medium introduced into the inlet 112d may flow out toward the sleeve 21. As an example, referring to FIGS. 7 to 9, the outlet part 112j may be formed by an interface between the first fixing member 112a1 and the second fixing member 112a2. The inflow portion 112d is concave from the upper portion of the first fixing member 112a1 toward the lower portion, and the side surface (or the first side) contacting the second fixing member 112a2 at the inlet portion 112d in the first fixing member 112a1. The connection passage 112c may be formed from the inlet portion 112d in the fixing member 112b1 toward the side contacting the fourth fixing member 112b2. That is, the contact medium introduced into the inflow portion 112d may have an interface between the first fixing member 112a1 and the second fixing member 112a2 (or the third fixing member 112b1 and the fourth fixing member) through the connection passage 112c. It may flow out toward the sleeve 21 through the outlet portion 112j formed in the interface between the fixing member 112b2.

Concave portions on one side of the second fixing member 112a2 in contact with one side of the first fixing member 112a1 (or one side of the fourth fixing member 112b2 in contact with one side of the third fixing member 112b1). 112e may be formed. The recess 112e is connected to the connecting passage 112c of the first fixing member 112a1 (or the third fixing member 112b1), and the contact medium flowing into the inlet 112d is connected to the connecting passage 112c. Passage may flow into the recess 112e. The contact medium introduced into the recess 112e may flow out through the outlet 112j. The outlet portion 112j may be elongated along the length direction of the first fixing member 112a1 and the second fixing member 112a2 (or the length direction of the third fixing member 112b1 and the fourth fixing member 112b2). Can be. As the outlet portion 112j is formed along the longitudinal direction of the second fixing member 112a2 (or the fourth fixing member 112b2), the contact medium is formed in the first fixing member 112a1 or the second fixing member ( Widely flowed out in the longitudinal direction of the 112a2 (the third fixing member 112b1 or the fourth fixing member 112b2), the contact medium is evenly applied to the bottom surface of the sensor unit 111, the sensor unit 111 ) And the friction force between the sleeve 21 can be reduced.

The concave portion 112e may be elongated along the length of the second fixing member 112a2 (or the fourth fixing member 112b2) so that the contact medium can be widely discharged through the entire outlet portion 112j.

Corners where the first fixing member 112a1 and the second fixing member 112a2 corresponding to the outlet of the outlet portion 112j contact (or the corners where the third fixing member 112b1 and the fourth fixing member 112b2 contact). ) Can be chamfered. This can facilitate the outflow of the contact medium into the sleeve 21.

The contact medium flowing out through the outlet 112j may penetrate between the sensor 111 and the sleeve 21 to improve ultrasonic transmission from the sensor 111 to the sleeve 21. In detail, the contact medium may be made of a material having an acoustic impedance between the acoustic impedance of the sleeve 21 and the acoustic impedance of the sensor unit 111. The contact medium is placed between the sleeve 21 and the sensor portion 111, and since the acoustic impedance of the contact medium has a value between the acoustic impedance of the sleeve 21 and the acoustic impedance of the sensor portion 111, the contact medium is the sleeve The transmittance of the ultrasonic waves may be improved by reducing the difference in acoustic impedance between the 21 and the sensor 111.

In addition, the contact medium may be made of a material that does not react with the sleeve 21. More specifically, the sleeve 21 is made of an insulating material, the contact medium is applied to the surface of the sleeve 21, the contact medium reacts with the sleeve 21, the electrical characteristics of the sleeve 21 (for example Insulation, etc., may cause a problem that the sleeve 21 as the connecting member does not endure a high voltage and explodes or decreases its lifespan. Thus, the contact medium is preferably made of a material which is in contact with the sleeve 21 so as not to affect the electrical properties of the sleeve 21. The sleeve 21 is generally made of silicone, in which case the contact medium which does not react with the sleeve 21 which is silicone may be, for example, glycerin.

In addition, the sensor unit 111 and the sensor fixing unit 112 are in close contact with the outer circumferential surface of the sleeve 21 and rotated, wherein the sensor unit 111 and the sensor fixing unit 112 are disposed between the outer circumferential surface of the sleeve 21. Friction may occur. The friction may cause a measurement error of the sensor unit 111. The contact medium may reduce the frictional force generated between the sensor unit 111 (or the sensor fixing unit 112) and the outer circumferential surface of the sleeve 21, and may reduce the measurement error caused by the frictional force.

The pillar portion 116 may be formed to extend in the normal direction of the outer circumferential surface of the sleeve 21 on one side of the jig frame 113. The pillar portion 116 may be fixed by the coupling portion 117. The pillar portion 116 may be fixed by the fixing member 117a of the coupling portion 117. Referring to FIG. 2, as the fixing lever 117b is rotated in one direction, separation occurs between the two fixing members 117a, and the pillar part 116 is inserted into the spaced space, and the fixing lever 117 By rotating the 117b in the other direction, the two fixing members 117a may tighten the pillar portion 116 to fix the sensor support 110-1 to the coupling portion 117.

The pressing unit 118 may apply pressure to the sensor support 110-1 so that the sensor support 110-1 may be in close contact with the sleeve 21. The pressing unit 118 may be a pneumatic or hydraulic cylinder. 1 and 2, the pressurizing part 118 may be connected to the sole valve 150 by the first connecting pipe 31 and the second connecting pipe 32. Although not shown in the figure, the sole valve 150 may be connected to the compressor. The sole valve 150 may function as a switch for transmitting or blocking the pressure of the compressor to the pressurizing unit 118.

More specifically, one end of the first connection pipe 31 may be connected to the connection part 118a on one side of the pressurizing part 118, and the other end of the first connection pipe 31 may be connected to the sole valve 150. In addition, one end of the second connection pipe 32 may be connected to the connection part 118b on one side of the pressurizing part 118, and the other end of the second connection pipe 32 may be connected to the sole valve 150. The sole valve 150 allows the pressurizing part 118 to operate by flowing air pressure or hydraulic pressure through the first connecting pipe 31 and blocking the air pressure or hydraulic pressure through the second connecting pipe 32, and vice versa. 150 may control the pressurizing unit 118 to stop operation by blocking air pressure or hydraulic pressure through the first connecting pipe 31 and flowing air pressure or hydraulic pressure through the second connecting pipe 32.

The pressing portion 118 is connected to the fixing member 117a for fixing the pillar portion 116 and may apply pressure in the longitudinal direction of the pillar portion 116. Accordingly, the support frames 113 and 114 coupled to one end of the pillar part 116 are further in close contact with the outer circumferential surface of the sleeve 21 and the sensor unit 111 fixed in the support frames 113 and 114 is also the sleeve 21. In close contact with the outer circumferential surface of the sensing unit 111, the sensing force can be further improved.

The pressure applied by the pressing unit 118 toward the sleeve 21 to the sensor head 110 may be approximately 0.2 to 0.9 MPa. When the pressurization pressure of the pressurization unit 118 is less than 0.2 MPa, a signal from the sensor unit 111 or to the sensor unit 111 may be weak and a decrease in sensing force may occur. In addition, when the pressurization pressure of the pressing unit 118 exceeds 0.9 MPa, the surface friction between the sensor unit 111 and the sleeve 21 increases, so that the sensor head unit 110 is transferred onto the sleeve 21. There is a problem that is limited.

The coupling part 117 may fix the sensor support part 110-1 to the first transfer part 120. That is, one side of the coupling part 117 is coupled to the first transfer part 120, and the other side of the coupling part 117 is fixed to the pillar part 116 by the fixing member 117a to transfer the sensor support 110-1 to the first transfer part. Can be fixed to 120.

10 is a perspective view schematically showing a first guide and a rail of the first transfer unit, FIG. 11 is a perspective view schematically showing a state in which the first guide is separated, and FIG. 12 is a perspective view schematically showing a state in which the rail is separated. 13 is a perspective view schematically illustrating the first actuator.

The first transfer part 120 rotates the sensor head 110 in the first direction along the circumferential surface of the sleeve 21, and after the rotation in the first direction, rotates the sensor head 110 of the sleeve 21. It can rotate along the circumferential surface in a second direction opposite to the first direction.

That is, the first transfer unit 120 may rotate the sensor head unit 110 in a clockwise (or counter-clockwise) direction along the circumferential surface of the sleeve 21. The sensor head 110 may detect the inside of the sleeve 21 or the interface between the sleeve 21 and the cable 10 while rotating the sensor head 110 in a clockwise (or counterclockwise) direction.

After the first transfer part 120 rotates the sensor head part 110 in a clockwise (or counter-clockwise) direction along the circumferential surface of the sleeve 21, the sensor head part 110 becomes the second transfer part ( 130 is moved in the longitudinal direction of the sleeve 21. This will be described later.

The first transfer unit 120 may rotate the sensor head unit 110 moved by the second transfer unit 130 in a direction opposite to the first direction, that is, counterclockwise (or clockwise). The sensor head 110 may detect the inside of the sleeve 21 or the interface between the sleeve 21 and the cable 10 while rotating the sensor head 110 in a counterclockwise (or clockwise) direction.

As described above, the sensor head unit 110 is connected to the contact medium storage tank through the flow tube 40, and is connected to the sol valve 150 through the

connection tubes

31 and 32, and thus the sensor head unit 110. If only rotates in one direction may cause a problem that the flow pipe 40 and the connecting pipes (31, 32) are twisted in the sleeve (21). According to an embodiment of the present invention, the first transfer unit 120 rotates the sensor head unit 110 clockwise (or counterclockwise) and then rotates counterclockwise (or clockwise). By doing so, the flow pipe 40 and the

connection pipes

31 and 32 can be prevented from being twisted by the sleeve 21.

1 and 10 to 13, the first transfer unit 120 may include a rail 121, a first guide 122, and a first actuator 123.

The rail 121 may be coupled to the sensor support 110-1 to rotate around the outer side of the sleeve 21. That is, the rail 121 is connected to the pillar part 116 of the sensor support part 110-1 by the coupling part 117, and the sensor support part 110-1 is also sleeve 21 as the rail 121 rotates. Will rotate the outer circumferential surface. Accordingly, the sensor part 111 fixed to the sensor support part 110-1 may be in close contact with the outer circumferential surface of the sleeve 21 and rotate to detect the inside of the sleeve 21.

The rail 121 may be formed to surround the outer side of the sleeve 21 and be spaced apart from the outer side. That is, the rail 121 may have an annular ring shape having an inner diameter larger than that of the sleeve 21 as shown in FIG. 10.

In addition, the rail 121 may be formed of two or more members, and these members may be combined to form an annular ring. 12 is a perspective view schematically showing an embodiment of the rail 121 separated into two members. Referring to FIG. 12, the rail 121 is formed of a first rail member 121a and a second rail member 121b, respectively, and the first and

second rail members

121a and 121b are connected to the fastening means 121c. It can be tightened by.

A thread 121d may be formed on the outer surface of the rail 121. The thread 121d formed on the rail 121 is engaged with the gear (123b in FIG. 13) of the first actuator (123 in FIG. 13), and the rail 121 is rotated around the sleeve 21 by the rotational force of the motor 123a. Will rotate.

Referring to FIG. 13, the gear 123b of the first actuator 123 may be disposed in the accommodation portion 123c. The accommodating part 123c may have a structure in which one side is open so that the gear 123b may be engaged with the threaded thread 121d of the rail 121.

The first guide 122 may guide the rotation of the rail 121, and may have an annular ring shape formed to be spaced apart from the outer side of the sleeve 21.

As shown in FIG. 1, the first guide 122 is fixed to the block 131 of the second transfer unit 130 by the connecting portion 132, and the block 131 moves along the second guide 134. Accordingly, the sleeve 21 is movable in the longitudinal direction.

The first guide 122 may guide the rail 121 to rotate along the outer circumferential surface of the sleeve 21. For this purpose, the first guide 122 may include a bearing 124 on one side of the first guide 122. . The bearing 124 may minimize frictional resistance when the rail 121 rotates.

The first guide 122 may be formed of at least two members, such as rails 121, and may have an annular ring shape by combining them. Referring to FIG. 11, the first guide 122 may be composed of two

guide members

122a and 122b, which may be fastened by the fastening means 122c to form an annular ring shape.

As such, since the first guide 122 and the rail 121 are formed of two or more members, the interface measurement between the sleeve 21 and the cable 10 may be performed while the cable 10 and the sleeve 21 are already coupled. It is possible. That is, by arranging the cable 10 to which the sleeve 21 is coupled between the separated members in a state where the first guide 122 and the rail 121 are separated into two or more members, the members are joined by combining the members. An annular first guide 122 and a rail 121 surrounding the outer circumferential surface of the sleeve 21 may be formed. Accordingly, the cable connection member inspection apparatus of the present invention can directly inspect the defect of the interface between the sleeve 21 and the cable 10 at the construction site for the cable 10 to which the sleeve 21 is coupled.

The second transfer unit 130 may move the sensor head 110 in the longitudinal direction of the sleeve 21. More specifically, the second transfer unit 130 senses the sensor head unit 110 by rotating the outer portion of the sleeve 21 by the first transfer unit 120 by the first transfer unit 120, and then moves the sensor head unit 110 to the sleeve 21. ) Can be moved in the longitudinal direction (X-axis direction in FIG. 1).

In addition, the second transfer part 130 may move the sensor head part in the longitudinal direction of the connecting member so that the range in which the sensor head 110 senses while rotating one rotation and the range in which the sensor head 110 senses while rotating another rotation partially overlap. That is, the sensor head unit 110 stops at the start position of rotation after sensing by rotating one clockwise (or counterclockwise) direction by the first transfer unit 120. Thereafter, the second transfer unit 130 moves the sensor head 110 in the longitudinal direction of the sleeve 21, and the movement distance in the longitudinal direction is a sensor by rotation in a clockwise direction (or counterclockwise direction) that is the first direction. The sensor head unit 110 may be partially overlapped with the sensing range of the sensor head unit 110 by the counterclockwise (or clockwise) rotation, which is a second direction thereafter. ) Can be moved in the longitudinal direction of the sleeve 21.

In this way, the sensing range in the first direction and the sensing range in the second direction of the sensor head unit 110 overlap each other, so that the entire range of the sleeve 21 can be continuously scanned without omission.

In addition, when the sensor head 110 rotates along the circumferential surface of the sleeve 21 and simultaneously moves in the longitudinal direction of the sleeve 21, difficulties arise in analyzing and processing the flawed result. The movement in the longitudinal direction of the connecting member 110 may be performed after stopping one rotation and the circumferential surface of the sleeve 21.

Referring to FIG. 1, the second transfer unit 130 may include a block 131, a connection unit 132, a second guide 134, and a second actuator 133.

The block 131 may be connected to the first guide 122 of the first transfer part 120 by the connection part 132. Accordingly, as the block 131 moves along the second guide 134, the first transfer part 120 may also move in the longitudinal direction of the sleeve 21.

The second guide 134 extends in the longitudinal direction of the sleeve 21, providing a path through which the block 131 can move in the longitudinal direction of the sleeve 21.

In one embodiment, each of the block 131 and the second guide 134 may be a linear motor (LM) block and an LM guide.

The LM guide has a rod formed with a screw on the outside thereof, and the LM block may have a connection portion that can be engaged with the screw. The LM guide is disposed in the longitudinal direction of the sleeve 21, and by the rotation of the rod, the LM block engaged with the screw of the rod may move in the longitudinal direction of the rod, that is, in the longitudinal direction of the sleeve 21.

Referring to FIG. 15, first, the sensor head portion 110 is rotated along the outer portion of the sleeve 21 by the first transfer portion 120 and between the inside of the sleeve 21 or between the sleeve 21 and the cable 10. The interface can be inspected. That is, the first transfer part 120 may rotate the sensor head 110 in one direction clockwise (or counterclockwise) along the circumferential surface of the sleeve 21. The sensor head 110 may detect the inside of the sleeve 21 or the interface between the sleeve 21 and the cable 10 while rotating the sensor head 110 in a clockwise (or counterclockwise) direction.

Next, the sensor head 110 may move in the longitudinal direction of the sleeve 21 after sensing in the first direction. That is, the second transfer unit 130 senses the sensor head unit 110 by rotating the outer portion of the sleeve 21 by the first transfer unit 120 by one rotation and then lengthens the sensor head unit 110 to the length of the sleeve 21. Direction (the X-axis direction in FIG. 1). In this case, the second transfer part 130 may move the sensor head part in the lengthwise direction of the connecting member so that the range in which the sensor head 110 senses while rotating one rotation and the range in which the sensor head 110 senses while rotating another rotation partially overlap. That is, the sensor head unit 110 stops at the start position of rotation after sensing by rotating one clockwise (or counterclockwise) direction by the first transfer unit 120. Thereafter, the second transfer unit 130 moves the sensor head 110 in the longitudinal direction of the sleeve 21, and the movement distance in the longitudinal direction is a sensor by rotation in a clockwise direction (or counterclockwise direction) that is the first direction. The sensor head unit 110 may be partially overlapped with the sensing range of the sensor head unit 110 by the counterclockwise (or clockwise) rotation, which is a second direction thereafter. ) Can be moved in the longitudinal direction of the sleeve 21.

Next, the sensor head 110 may be sensed while moving in the longitudinal direction of the sleeve 21 and rotating in a second direction opposite to the first direction. That is, the first transfer unit 120 may rotate the sensor head unit 110 moved by the second transfer unit 130 in a direction opposite to the first direction, that is, counterclockwise (or clockwise). . The sensor head 110 may detect the inside of the sleeve 21 or the interface between the sleeve 21 and the cable 10 while rotating the sensor head 110 in a counterclockwise (or clockwise) direction.

The sensor head 110 may be pressed toward the sleeve 21 to be in close contact with the sleeve 21 in the above-described sensing in the first direction or the sensing in the second direction. In addition, the sensor head 110 may be tilted about the longitudinal direction of the sleeve 21 to be in close contact with the sleeve 21 in the sensing step in the first direction or the second direction.

Since the sensor head 110 is pressurized and tilted while rotating the circumferential surface of the sleeve 21 as described above, the sensor head 110 may be in close contact with the circumferential surface of the sleeve 21 to improve the accuracy of the measurement. have.

When sensing the sensor head 110 in the first direction and the second direction, a contact medium may be sprayed between the sensor head 110 and the sleeve 21. That is, the contact medium may be injected during the movement of the sensor head 110.

The contact medium may be disposed between the sensor head 110 and the sleeve 21 to improve the transmittance of the ultrasonic wave from the sensor 111 of the sensor head 110 to the sleeve 21, and also with the sensor 111. The friction between the sleeves 21 can be reduced.

In detail, the contact medium may be made of a material having an acoustic impedance between the acoustic impedance of the sleeve 21 and the acoustic impedance of the sensor unit 111. The contact medium is placed between the sleeve 21 and the sensor portion 111, and since the acoustic impedance of the contact medium has a value between the acoustic impedance of the sleeve 21 and the acoustic impedance of the sensor portion 111, the contact medium is the sleeve The transmittance of the ultrasonic waves may be improved by reducing the difference in acoustic impedance between the 21 and the sensor 111. As an example the contact medium may be glycerin.

Although the present specification has been described with reference to preferred embodiments of the invention, those skilled in the art may variously modify and change the invention without departing from the spirit and scope of the invention as set forth in the claims set forth below. It could be done. Therefore, it should be seen that all modifications included in the technical scope of the present invention are basically included in the scope of the claims of the present invention.

Claims

In the cable connecting member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve, when two cables separated from each other by the sleeve of the connecting member is connected,

The cable connection member inspection device,

A sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve;

The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And

A first conveying portion for rotating the sensor head portion around an outer portion of the sleeve; Cable connection member inspection apparatus comprising a.
The method of claim 1,

The sensor head unit,

A sensor unit generating ultrasonic waves toward the sleeve and detecting the reflected ultrasonic waves;

A sensor support for fixing the sensor unit; And

A coupling part which fixes the sensor support part and couples with the first transfer part; Cable connection member inspection apparatus comprising a.
The method of claim 2,

The sensor unit is composed of a plurality of cells, each of the cells generating a ultrasonic wave with a time difference, and receiving the reflected cable, characterized in that for receiving the ultrasonic waves.
The method of claim 2,

The sensor support,

A support frame supporting the sensor unit;

A sensor fixing part disposed between the support frame and the sensor part to fix the sensor part; And

A pillar portion extending from one end of the support frame and fixed by the coupling portion; Cable connection member inspection apparatus comprising a.
The method of claim 4, wherein

The support frame,

An outer jig frame connected to one end of the pillar portion;

An inner jig frame disposed inside the outer jig frame to be tilted with respect to the outer jig frame based on a length direction of the sleeve; And

An elastic member disposed between the outer jig frame and the inner jig frame to provide an elastic force to the inner jig frame; Cable connection member inspection apparatus comprising a.
The method of claim 4, wherein

The sensor fixing part has an inlet part through which the contact medium flows in one side, and an outlet part through which the contact medium flows out the other side,

And the contact medium reduces friction between the sensor portion and the sleeve.
The method of claim 4, wherein

The sensor fixing part includes a first sensor fixing member and a second sensor fixing member disposed on both sides of the sensor unit, and the sensor unit is fixed between the first sensor fixing member and the second sensor fixing member. Cable connection material inspection device.
The method of claim 7, wherein

The first sensor fixing member is composed of a first fixing member and a second fixing member,

The second sensor fixing member is composed of a third fixing member and a fourth fixing member,

The first fixing member has the sensor portion disposed on one side thereof and the second fixing member disposed on the other side thereof, and the third fixing member has the sensor portion disposed on one side thereof and the fourth fixing member disposed on the other side thereof. And the sensor unit is disposed between the first fixing member and the second fixing member.
The method of claim 8,

The second fixing member has a first concave portion formed toward the other side from one side of the second fixing member in contact with one side of the first fixing member,

The fourth fixing member has a second concave portion formed toward the other side from one side of the third fixing member in contact with one side of the third fixing member.
The method of claim 9,

The first concave portion is formed long along the longitudinal direction of the second fixing member,

The second concave portion is formed long along the longitudinal direction of the fourth fixing member, the cable connecting member inspection apparatus.
The method of claim 8,

And each of the second fixing member and the fourth fixing member includes a guide portion protruding toward the sleeve from a lower surface thereof.
The method according to claim 11,

And the sensor unit is disposed between the first fixing member and the second fixing member so as to be spaced apart from the sleeve when the guide unit is in contact with the sleeve.
The method of claim 1,

The pressurizing portion is a cable connection member inspection device, characterized in that the pneumatic or hydraulic cylinder.
The method of claim 1,

And the pressure applied to the sensor head by the pressing unit toward the sleeve is approximately 0.2 to 0.9 MPa.
In the cable connecting member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve, when two cables separated from each other by the sleeve of the connecting member is connected,

The cable connection member inspection device,

A sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve;

The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And

A first conveying portion for rotating the sensor head portion around an outer portion of the sleeve; Equipped with,

And the sensor head unit sprays a contact medium between the sleeve and the sleeve.
The method of claim 15,

And the contact medium is made of a material having an acoustic impedance between the acoustic impedance of the sleeve and the acoustic impedance of the sensor head portion.
The method of claim 16,

And the contact medium is glycerin.
The method of claim 15,

Cable sensor according to claim 1, wherein the sensor head is configured to tilt in the longitudinal direction of the sleeve.
The method of claim 18,

And a second transfer part for moving the sensor head part in the longitudinal direction of the sleeve.
The method of claim 15,

The pressurizing portion is a cable connection member inspection device, characterized in that the pneumatic or hydraulic cylinder.
The method of claim 15,

And a second transfer part for moving the sensor head part in the longitudinal direction of the sleeve.
In the cable connecting member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve, when two cables separated from each other by the sleeve of the connecting member is connected,

The cable connection member inspection device,

A sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve;

The sensor head portion is a pressing portion for applying a pressure toward the sleeve to be in close contact with the sleeve through the air pressure or hydraulic pressure; And

A first conveying portion for rotating the sensor head portion around an outer portion of the sleeve; Equipped with,

And the sensor head portion is configured to tilt in the longitudinal direction of the sleeve.
The method of claim 22,

And a second transfer part for moving the sensor head part in the longitudinal direction of the sleeve.
The method of claim 22,

The sensor head unit,

A sensor unit generating ultrasonic waves toward the sleeve and detecting the reflected ultrasonic waves;

A sensor support for fixing the sensor unit; And

A coupling part which fixes the sensor support part and couples with the first transfer part; Cable connection member inspection apparatus comprising a.
The method of claim 24,

The sensor unit is composed of a plurality of cells, each of the cells generating a ultrasonic wave with a time difference, and receiving the reflected cable, characterized in that for receiving the ultrasonic waves.
The method of claim 24,

The sensor support,

A support frame supporting the sensor unit;

A sensor fixing part disposed between the support frame and the sensor part to fix the sensor part; And

A pillar portion extending from one end of the support frame and fixed by the coupling portion; Cable connection member inspection apparatus comprising a.
The method of claim 26,

The support frame,

An outer jig frame connected to one end of the pillar portion;

An inner jig frame disposed inside the outer jig frame to be tilted with respect to the outer jig frame based on a length direction of the sleeve; And

An elastic member disposed between the outer jig frame and the inner jig frame to provide an elastic force to the inner jig frame; Cable connection member inspection apparatus comprising a.
The method of claim 26,

The sensor fixing part has an inlet part through which the contact medium flows in one side, and an outlet part through which the contact medium flows out the other side,

And the contact medium reduces friction between the sensor portion and the sleeve.
The method of claim 26,

The sensor fixing part includes a first sensor fixing member and a second sensor fixing member disposed on both sides of the sensor unit, and the sensor unit is fixed between the first sensor fixing member and the second sensor fixing member. Cable connection material inspection device.
The method of claim 29,

The first sensor fixing member is composed of a first fixing member and a second fixing member,

The second sensor fixing member is composed of a third fixing member and a fourth fixing member,

The first fixing member has the sensor portion disposed on one side thereof and the second fixing member disposed on the other side thereof, and the third fixing member has the sensor portion disposed on one side thereof and the fourth fixing member disposed on the other side thereof. And the sensor unit is disposed between the first fixing member and the second fixing member.
The method of claim 30,

The second fixing member has a first concave portion formed toward the other side from one side of the second fixing member in contact with one side of the first fixing member,

The fourth fixing member has a second concave portion formed toward the other side from one side of the third fixing member in contact with one side of the third fixing member.
The method of claim 30,

The first concave portion is formed long along the longitudinal direction of the second fixing member,

The second concave portion is formed long along the longitudinal direction of the fourth fixing member, the cable connecting member inspection apparatus.
The method of claim 29,

And each of the second fixing member and the fourth fixing member includes a guide portion protruding toward the sleeve from a lower surface thereof.
The method of claim 33,

And the sensor unit is disposed between the first fixing member and the second fixing member so as to be spaced apart from the sleeve when the guide unit is in contact with the sleeve.
The method of claim 22,

The pressurizing portion is a cable connection member inspection device, characterized in that the pneumatic or hydraulic cylinder.
The method of claim 22,

And the pressure applied to the sensor head by the pressing unit toward the sleeve is approximately 0.2 to 0.9 MPa.
In the cable connecting member inspection apparatus for inspecting the interface between the sleeve and the cable or the inside of the sleeve, when two cables separated from each other by the sleeve of the connecting member is connected,

The cable connection member inspection device,

A sensor head unit configured to detect an interface between the sleeve and the cable or the inside of the sleeve;

A first conveying portion for rotating the sensor head portion around an outer portion of the sleeve; And

And a second transfer part for moving the sensor head part in the longitudinal direction of the sleeve.
The method of claim 37,

The first transfer unit,

A rail coupled with the sensor support to rotate around an outer portion of the sleeve;

A first guide guiding rotation of the rail, the first guide being spaced apart from the outer part of the sleeve; And

A first actuator providing a driving force for rotating the rail; Cable connection member inspection apparatus comprising a.
The method of claim 38,

And the first guide and the rail are formed of at least two members, and the members are coupled by fastening means.
The method of claim 38,

The rail is surrounded by an outer portion of the sleeve and spaced apart from the outer portion, a screw thread is formed on the outer surface, the thread is rotated in response to the drive force of the first actuator.
The method of claim 37,

The second transfer unit,

A block connected to the first transfer part and moving along the first transfer part in a length direction of the sleeve;

A connecting part for fixing the block to the first conveying part; And

A second guide providing a movement path of the block;

A second actuator for providing a driving force to the block so that the block can move; Cable connection member inspection apparatus comprising a.
In the cable sleeve inspection method for inspecting the interface between the sleeve of the connection member and the cable or the inside of the sleeve using a sensor head,

Sensing the sensor head by rotating along the outer side of the sleeve; And

Pressing the sensor head toward the sleeve to be in close contact with the sleeve during the rotation sensing step; Cable connection member inspection method comprising the.
The method of claim 42, wherein

And a contact medium is sprayed between the sensor head and the sleeve in the step of sensing the sensor head while rotating along the outer portion of the sleeve.
The method of claim 42, wherein

And the sensor head part is tilted about the longitudinal direction of the sleeve to be in close contact with the sleeve in the sensing while rotating along the outer side of the sleeve.
The method of claim 42, wherein

Sensing the sensor head by rotating along an outer portion of the sleeve and moving in the longitudinal direction of the sleeve; The cable connection member inspection method further comprising.
The method of claim 43,

And the sensor head part is tilted about the longitudinal direction of the sleeve to be in close contact with the sleeve in the sensing while rotating along the outer side of the sleeve.
The method of claim 43,

Sensing the sensor head by rotating along an outer portion of the sleeve and moving in the longitudinal direction of the sleeve; The cable connection member inspection method further comprising.
47. The method of claim 46 wherein

Sensing the sensor head by rotating along an outer portion of the sleeve and moving in the longitudinal direction of the sleeve; The cable connection member inspection method further comprising.
The method of claim 44,

Sensing the sensor head by rotating along an outer portion of the sleeve and moving in the longitudinal direction of the sleeve; The cable connection member inspection method further comprising.
The method of claim 42, wherein

The sensor head unit,

A sensor unit generating ultrasonic waves toward the sleeve and detecting the reflected ultrasonic waves;

A sensor support for fixing the sensor unit; And

A coupling part which fixes the sensor support part and couples with the first transfer part; Equipped with,

And the sensor support part is in contact with the sleeve when the sensor head part is in close contact with the sleeve, but the sensor support part is fixed by the sensor support part to be spaced apart from the sleeve.
In the cable connecting member inspection method for inspecting the interface of the sleeve and the cable of the connecting member or the inside of the sleeve using a sensor head,

Sensing the sensor head while rotating in a first direction along an outer portion of the sleeve;

Moving the sensor head part in the longitudinal direction of the sleeve after sensing in the first direction; And

Sensing while moving in the longitudinal direction of the sleeve while rotating in a second direction opposite to the first direction; Equipped with,

And the sensor head portion is pressed toward the sleeve to be in close contact with the sleeve in the sensing step in the first direction or the second direction.
The method of claim 51,

And a contact medium is sprayed between the sensor head and the sleeve in the sensing step while sensing the sensor head while rotating in the first direction along the outer portion of the sleeve.
53. The method of claim 51 or 52,

And the sensor head part is tilted about the longitudinal direction of the sleeve to be in close contact with the sleeve in the sensing step in the first direction or the second direction.