JP2005137183A - High-frequency feeder line, end part structure therefor clamp structure, and connecting device and connecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting device and a connecting method for a high-frequency feeder line by which the connection with desired fastening force can be realized with simple work. <P>SOLUTION: An adaptor 42 and a coaxial feeder line 44 are mutually approached. Both flange members 61, 63 are abutted against each other. After that, chuck members 65a, 65b are wound around an annular rib on the outer periphery of the abutted flange members 61, 63. After that, the tip side of a bolt member 65e is fitted into a U-shaped groove 72. A nut member 65f is fastened with proper torque determined by a standard. Consequently, both flange members 61, 63 are mutually joined with the force corresponding to the torque by the fastening. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a connection apparatus and method for connecting various high-frequency feed lines including a high-frequency coaxial cable used as a feed line to a transmission antenna.

Conventionally, a high-frequency coaxial feed line such as a high-frequency coaxial cable has been used as a feed line to a transmission antenna. Such a high-frequency coaxial feeder is required to maintain high-precision impedance characteristics over a long period of time. For this reason, in particular, the connection part between the high-frequency coaxial power supply lines or the connection part between the high-frequency coaxial power supply line and the distributor and other parts is made by abutting the flanges provided at the pair of connection ends to the ring of both flanges. It is fixed by airtightly bolting using holes provided at equal intervals along the line (for example, see Patent Document 1).
JP-A-8-138803 (FIG. 1)

  However, in the fastening method in which the flanges are brought into contact with each other as described above and bolted at a plurality of locations, not only the work process becomes complicated, but also the work of connecting the pair of flanges with an equal force requires skill. Specifically, since the transmitting antenna is installed at a high place such as a steel tower and the high-frequency coaxial feed line needs to be installed at a high place, for example, four bolts are tightened to fix the pair of flanges to each other. Greatly reduces the workability of the installation of the high-frequency coaxial feeder. In addition, when such work is exchanging or repairing the high-frequency coaxial power supply line, the work needs to be performed quickly because the work is performed after the broadcast time. In addition, since the connection portion of the high-frequency coaxial feeder greatly affects the overall impedance characteristics, it is necessary not only to keep the pair of flanges airtight but also to contact each other with an appropriate force. It is not easy for a skilled person to perform bolting with a uniform force in a short time in a balanced manner.

  Then, an object of this invention is to provide the connection apparatus and connection method of the high frequency electric power supply line which enable the connection by desired fastening force by simple operation | work.

  In order to solve the above-described problem, the high-frequency power supply line or communication power supply line connecting apparatus according to the present invention is configured such that the end of the high-frequency power supply line having a cylindrical outer conductor and the end of another member are connected to each other. Is a connecting device for high-frequency feed lines for connecting the two to each other, and includes (a) a first flange member, (b) a second flange member, and (c) a clamping means. Here, (a) the first flange member is provided at an end of the high-frequency power supply line, and has a first tapered surface whose diameter increases toward the tip side of the high-frequency power supply line, and the first taper. And an annular first joining surface perpendicular to the axis on the tip side of the surface. In addition, (b) the second flange member has substantially the same outer diameter as the first flange member and is provided at the end of the other member, and is directed toward the distal end side of the end of the other member. And a second tapered surface whose diameter increases, and an annular second joint surface which is on the tip side of the second tapered surface and is perpendicular to the axis. Further, (c) the clamping means contacts the pair of first and second tapered surfaces corresponding to the side inclined surfaces of the annular rib formed in a state where the first and second joint surfaces are in contact with each other. A plurality of arc-shaped chuck members having a V-groove in contact with each other and having substantially the same radius of curvature as the first and second flange members as a whole, and a connecting means for connecting the plurality of chuck members in series, And fastening members that fasten both ends of the plurality of chuck members connected in series so as to be separable from each other.

  In the connection device, the first and second joint surfaces are brought into contact with each other and the first and second flange members are abutted with each other, and these can be fixed to each other by the clamping means. Thereby, the outer conductor of the high frequency feeder can be electrically connected to the outer conductor of the other member. Here, the clamping means is composed of a plurality of arc-shaped chuck members connected in series by the connecting means, and has a structure in which both ends of these chuck members are fastened to each other by a fastening member. That is, the first and second chuck members are arranged so as to be wound around the first and second flange members that are in contact with each other, and both ends of the chuck members are tightened by the fastening members. Two flange members can be securely fixed. At this time, since the V-groove provided in each chuck member presses the first and second tapered surfaces to crimp the first and second flange members together, the outer conductor of the high-frequency feed line and the outer conductor of the other member Can be securely connected with airtightness. In the above description, the “high-frequency feed line” means a coaxial feed line for transmission / reception, for example, a broadcast coaxial feed line or a coaxial feed for transmitting a broadcast high-frequency signal with a predetermined impedance characteristic. Includes tubes and even waveguides. The “other member” usually means another high-frequency power supply line, and the connection device of the present application can be used for connection between high-frequency power supply lines such as a coaxial power supply for broadcasting. Means a distributor, for example, the high-frequency power supply line and the distributor input / output terminal are connected. Further, the “air tightness” here is not limited to the so-called air tightness in a strict sense, but refers to a thing that does not allow wet air to enter from the outside. Hereinafter, when the term “airtightness” comes out, it is used in the above meaning unless otherwise specified. This airtightness can prevent the inside from being rusted by moist air from the outside.

  In a specific aspect of the connection device, the high-frequency power supply line is a coaxial power supply line further including an axial conductor inside the outer conductor via an insulator. That is, the high-frequency power supply line is a coaxial power supply line, that is, a coaxial cable, having a cylindrical outer conductor through an insulator on the outer periphery of the shaft core conductor.

  In a specific aspect of the connecting device, the plurality of chuck members are a pair of semicircular chuck members. In this case, the structure of the clamping means can be made relatively simple. Furthermore, since the first and second flange members can be crimped from the periphery with a relatively uniform force, the high frequency power supply line can be reliably sealed, and the high frequency power supply line and other members can be secured. The electrical connection with can be made good.

  Further, in a specific aspect of the connection device, the V grooves of the pair of semicircular chuck members are partially in contact with the first and second tapered surfaces at a plurality of locations, respectively. In this case, since the contact location can be determined, the first and second flange members can be crimped from the periphery with a more uniform force.

  In the specific aspect of the connecting device, the V grooves of the plurality of chuck members are partially in contact with the first and second tapered surfaces at a plurality of locations. In this case, since the contact location can be determined, the first and second flange members can be crimped from the periphery with a more uniform force.

  Moreover, in the specific aspect of the said connection apparatus, the side surface of the said V-groove has a protrusion in the said partial contact location. In this case, since the contact portion of the V-groove determined by adjusting the size of the protrusion and the first and second tapered surfaces can be reliably contacted, the first and second flange members can be used from the periphery. It can be made to press-fit with the force which becomes.

  Moreover, in the specific aspect of the said connection apparatus, the said partial contact location is arrange | positioned at equal intervals along a taper surface. In this case, the force applied from the periphery can be equally distributed to the first and second flange members.

  Moreover, in the specific aspect of the said connection apparatus, the said connection means has a link member for connecting the connection edge part of a pair of chuck member among these chuck members at two fulcrum. In this case, since the chuck members each have a fulcrum, the degree of freedom of movement is high, and fine adjustment for reliably contacting the partial contact portions can be easily performed.

  In another specific aspect of the connecting device, the plurality of chuck members are three or more arc-shaped chuck members each having substantially the same length. In this case, the first and second flange members can be easily crimped with a relatively uniform force over the entire periphery.

  Further, in another specific aspect of the connection device, the fastening member is pivotally supported at one end of the plurality of chuck members whose base side is connected in series, and the plurality of chucks whose tip side is connected in series. A bolt member fitted in a groove formed at the other end of the member; and a nut member screwed into the bolt member. In this case, since both ends of the plurality of chuck members are fastened using a bolt member attached to one end of the chuck member and a nut member screwed to the bolt member, the workability of fastening can be improved.

  In another specific aspect of the connecting device, the connecting device further includes a locking unit that prevents the bolt member from being detached from the groove. In this case, even if the nut member is somewhat loosened, the clamp means is held while being locked to the first and second flange members, so that it is possible to easily prevent the clamp means from dropping off. In order to prevent the nut member from loosening or falling off, the bolt member can be a double nut, or a locking member such as a pin hole or a split pin can be provided.

Moreover, in another specific aspect of the connection device, the plurality of chuck members have a recess for receiving a tip engagement portion of the nut member on a tip side. In this case, by providing the recess, the bolt member can be prevented from being detached from the groove.

  In another specific aspect of the connecting device, at least one of the plurality of chuck members extends along either the outer conductor of the high-frequency power supply line or the outer conductor of the end of the other member. A supporting member that extends, and a fixing member that fixes the end of the supporting member to either the outer conductor of the high-frequency power supply line or the outer conductor of the end of the other member are further provided. In this case, it is possible not only to prevent the chuck member from falling off, but also to reduce the characteristic deterioration due to the displacement and vibration of the high-frequency power supply line by reinforcement by the support member.

  In another specific aspect of the connecting device, an annular groove is formed along the joint surface outside the first and second joint surfaces, and an O-ring is embedded in the annular groove. ing. In this case, the air tightness in the outer conductor can be enhanced by using an O-ring formed in the annular groove.

  In another specific aspect of the connecting device, the connecting device further includes an alignment unit that is provided between the first and second joint surfaces and that positions the first and second flange members. In this case, the first flange member and the second flange member can be fixed while being positioned more precisely.

  Further, in another specific aspect of the connection device, the high-frequency power supply line is a coaxial power supply line further including an axial conductor via an insulator inside the outer conductor, and the alignment means includes the first The axial core conductor is positioned with respect to the first and second flange members. In this case, the outer conductor and the axial core conductor can be aligned at the connection portion of the coaxial transmission line for communication.

  In another specific aspect of the connecting device, the pair of semicircular chuck members determine the partial contact portion in the previous period by adjusting the overall shape. In this case, since the contact location can be determined, the first and second flange members can be crimped from the periphery with a more uniform force.

  In the method for connecting a high-frequency power supply line or a communication power supply line according to the present invention, (a) the diameter is increased toward the tip side of the high-frequency power supply line while being provided at the end of the high-frequency power supply line. A tapered first flange member and an end of another member having an outer diameter substantially the same as that of the first flange member and to be connected to the high-frequency power supply line, A step of abutting each other with a tapered second flange member whose diameter increases toward the tip end side of the portion to form an annular rib; and (b) having the V groove on the inner side and the first as a whole. And a clamp means in which a plurality of arc-shaped chuck members having substantially the same radius of curvature as the second flange member are connected around the rib so that the V-groove contacts a pair of side slopes of the rib. And (c) the rib And a step of fixing by matching the shaft and said other member and the radio frequency feeder cables by fastening with a predetermined force at both ends of the clamping means located around.

  In the above connection method, the first and second flange members can be fixed to each other by the clamping means in a state where the first and second flange members face each other, and the outer conductor of the high-frequency feed line and the outer conductor of the other member are electrically connected. Can be connected. At this time, the chuck members connected in series are arranged so as to be wound around the first and second flange members, and simple work is simply performed by tightening both ends of the chuck members using, for example, bolts and nuts. Thus, the first and second flange members can be reliably fixed to each other. In addition, since the V-groove provided in each chuck member presses the first and second tapered surfaces to crimp the first and second flange members together, the outer conductor of the high-frequency feed line and the outer conductor of another member It can be securely connected with airtightness.

[First Embodiment]
FIG. 1 is a diagram for explaining the installation of a connection device for a high-frequency power supply line or a communication power supply line according to the first embodiment. Fig.1 (a) shows the external appearance of an antenna installation, FIG.1 (b) is a figure explaining the wiring of a coaxial feeder.

  As shown in FIG. 1A, a tower 14 is erected on the upper part of the station building 12, and six sets of transmission antennas 18 are attached around a column 16 extending from the tip of the tower 14. Yes.

  As shown in FIG. 1B, a pair of coaxial power supply lines C1 and C2 extending from a broadcaster 22 which is a transmitter provided in the station building 12 pass through a vertical power supply switching device 24 and two coaxial power supply lines C11. , C12, C21, C22. These coaxial feed lines C11, C12, C21, and C22 extend outside the station building 12 through the gas introduction part 25. The coaxial feeders C11, C12, C21, and C22 extend along the steel tower 14 and the column 16 and are connected to the distributor 26, respectively. In each distributor 26, each coaxial feeder C11, C12, C21, C22 is branched into six. Of the branched cables, the ones extending from the coaxial feeders C11 and C12 are connected to the elements of the upper three-stage antenna 18, respectively. Further, among the branched cables, those extending from the coaxial feeders C21 and C22 are connected to the elements of the lower three-stage antenna 18, respectively.

  Each of the coaxial feeders C11, C12, C21, and C22 has a passage space through which a dry gas passes between the outer conductor and the central conductor constituting each of the coaxial feeders C11, C12, C21, and C22. It is sent out to the antenna 18 through this passage space. As a result, the inside of the pipe is always in a positive pressure state, and even if there is a location where airtightness in a strict sense is not maintained, the gas always flows out to the outside. Can be prevented. Each of the coaxial power supply lines C11, C12, C21, and C22 has a joint portion 32 at an appropriate position such as in the vicinity of the distributor 26, and further has an elbow portion 34 at an appropriate position reaching the distributor 26. The elbow portion 34 is provided for the purpose of ensuring play when a part of the coaxial feeders C11, C12, C21, C22 is exchanged. In these joint portions 32 and elbow portions 34, the external conductors and the central conductors are electrically connected to each other while matching the impedance. In such connection, the coaxial feeders C11, C12, Sealing is performed so that the airtightness of the passage space inside C21 and C22 is maintained.

  FIG. 2 is a partial cross-sectional view of the joint portion 32 of FIG. A coaxial power supply line 40 extending from the distributor 26 is connected to another coaxial power supply line 44 via an adapter 42.

  An old type flange member 51 is fixed to the lower end of the upper coaxial feeder 40 by welding, and in the state where the old type flange member 53 is fixed to the upper end of the adapter 42 by welding, It is fixed by bolts 55a and nuts 55b at four places. At this time, electrical connection between the outer conductor 40a of the coaxial power supply line 40 and the outer conductor 42a of the adapter 42 is ensured by joining the flange members 51 and 53 together. In addition, the core connection member 57 ensures conduction between the central conductor 40 b of the coaxial feeder 40 and the central conductor 42 b of the adapter 42. Here, the central portion of the core connecting member 57 is held by a disk-shaped holder 58 formed of an insulating resin, and this holder 58 is held between the flange members 51 and 53 together with the connecting member 57 to form the core. The connecting member 57 is held while being properly aligned. In addition, an O-ring 59 is sandwiched between the butted surfaces of both flange members 51 and 53 and on the outer periphery of the holder 58 to keep the flange members 51 and 53 airtight.

  A new type flange member 61 is fixed to the lower end of the adapter 42 by welding, and is clamped with a new type flange member 63 fixed to the upper end of the lower coaxial feeder 44 by welding. It is fixed from the periphery by a member 65. Each flange member 61, 63 is provided with tapered surfaces 61a, 63a that increase in diameter toward the tip, and abutting surfaces 61b, 63b provided on the most tip side. Since the force in the axial direction is applied to the former taper surfaces 61a and 63a from the surroundings by the V groove surface IS of the clamp member 65, the abutting surfaces 61b and 63b are urged by the resultant force so as to be crimped to each other, The annular joint surfaces 61c and 63c inside the butted surfaces 61b and 63b are brought into close contact with each other, and conduction between the outer conductor 42a of the adapter 42 and the outer conductor 44a of the coaxial feeder 44 is ensured.

  On the other hand, the core connection member 67 embedded in the center ensures conduction between the center conductor 42b of the adapter 42 and the center conductor 44b of the coaxial feeder 44. At this time, the central portion of the core connection member 67 is held by the disk-shaped holder 68 for alignment of the core connection member 67. The holder 68 is formed of an insulating resin, and is fitted into the annular steps 61 e and 63 e formed on the flange members 61 and 63 to be fixed together with the core connecting member 67. At this time, the flange members 61 and 63 are positioned with respect to each other by the annular steps 61e and 63e which are alignment means and the core connecting member 67. In order to maintain airtightness between the flange members 61 and 63, an O-ring 69 is sandwiched and fixed in annular grooves 61f and 63f formed in the abutting surfaces 61b and 63b of the flange members 61 and 63.

  FIG. 3 is a plan view for explaining the structure of the clamp member 65. The clamp member 65 includes a pair of semicircular arc-shaped chuck members 65a and 65b, a link 65c that is a connecting means for connecting the chuck members 65a and 65b at one end side, and the chuck members 65a and 65b at the other end side. And a fastening member 65d fastened in a separable manner.

  Here, as shown in FIG. 2, each chuck member 65a, 65b has a V-groove IS having a substantially V-shaped cross section inside. By appropriately adjusting the curvatures of the chuck members 65a and 65b without making them constant, the contact portion of the V groove IS with the flange members 61 and 63 can be specified. 4A and 4B are an AA cross-sectional view and a BB cross-sectional view of FIG. 3, respectively, showing a contact portion and a non-contact portion. The curvature of the chuck members 65a and 65b around the AA cross section is small, while the curvature is large at other locations. Thereby, each chuck member 65a, 65b is not an accurate semicircular shape, but has a gentle "<" shape. With this structure, the abutting portions 65j are the AA cross section shown in FIG. 3 and four places around the AA cross section, and these are present at equal intervals along the tapered surface. This corresponds to the bolt tightening at the four points in the conventional method. In addition, as shown in FIG.4 (b), the V groove IS side surface and the flange members 61 and 63 are spaced apart in the other non-contact part.

  As a modification of the above, there may be a case where the contact portion 65j has a protrusion (also denoted by 65j) due to a smooth protrusion on the side surface of the V groove IS shown in FIG.

  In this case, smooth undulating protrusions 65j are present at equal intervals along the taper surface at two locations on each side surface of the V groove IS of each chuck member 65a, 65b, for a total of four locations. FIG. 4C is a cross-sectional view taken along the line AA in the modified example of the chuck members 65a and 65b, and FIG. 4D is a cross-sectional view taken along the line BB in the modified example. As shown in FIG. 4 (c), the smooth undulating protrusion 65j is a contact portion with the flange members 61 and 63 at the time of fastening, and this contact portion is 4 in the conventional method. It corresponds to the bolt tightening at the point. As shown in FIG. 4D, the side surface of the V groove IS and the flange members 61 and 63 are separated from each other in the non-contact portion. As shown in FIGS. 4C and 4D, the V-groove cross section always has a similar shape. By smoothly changing the side surface of the V-groove IS, the depth of the V-groove IS also changes, and the portion where the V-groove IS is shallow corresponds to FIG. 4C and the periphery thereof, and this is the protrusion 65j of the contact portion. Become.

  Returning to FIG. 3, when the chuck members 65a and 65b are fastened, the link 65c has a two-pin structure in which the chuck members 65a and 65b are connected by separate fulcrums 65k. The degree of freedom is increased, and the contact portion and the protrusion 65j shown in FIG. Further, in the present embodiment, the protrusion 65j protrudes smoothly on the side surface of the V-groove IS, but it is also possible to limit the contact location with a protrusion or the like having a non-smooth step. In this embodiment and each of the following embodiments, in addition to the structure as described above, no protrusion 65j or the like is provided on the side surface of the V groove IS of the chuck members 65a and 65b, and the curvature of the side surface of the V groove IS remains constant. A method of crimping and fastening the flange members 61 and 63 is also possible.

  The fastening member 65d includes a bolt member 65e and a nut member 65f. The base side of the former bolt member 65e is rotatably connected to the end of one chuck member 65a by a pivot shaft 71, and the tip side of the bolt member 65e is the end of the other chuck member 65a. It fits in the U-shaped groove 72 formed in the. The latter nut member 65f is screwed onto the tip of the bolt member 65e fitted in the U-shaped groove 72. By appropriately rotating the nut member 65f in the tightening direction, forces in directions close to each other are applied to the ends of the chuck members 65a and 65b, and the flange members 61 and 63 are crimped by the chuck members 65a and 65b. It is concluded.

  The nut member 65f has a double nut structure in which a pair of nuts 73 and 74 are connected. After the clamp member 65 is once fastened by the nut member 65f, the nut member 65f is connected to the bolt member 65e, that is, the chuck members 65a and 65b. Tightening is not easy to loosen. A pair of small holes 76 are formed on the tip end side of the U-shaped groove 72 of the chuck member 65b, and the nut member 65f is temporarily installed by passing the split pins 77 serving as locking means through these holes 76. Even when the bolt member is loosened, the front end side of the bolt member 65e is prevented from coming out of the U-shaped groove 72.

  Further, FIG. 5 shows a modification of the structure for fastening the nut 73. A recess 65g is provided at the front end of the chuck member 65b so that the front end engaging portion 65h of the nut 73 is accommodated in the fastening. The diameter of the recess 65g is slightly larger than the diameter of the tip engaging portion 65h, and allows the nut 73 to rotate during fastening. By providing the recess 65g as described above, the tip end side of the bolt member 65e is prevented from coming out of the U-shaped groove 72 even if an abnormality occurs in the pin 77.

  FIG. 6 is an exploded perspective view illustrating a connection device between the adapter 42 and the coaxial power supply line 44 in the joint portion 32 shown in FIG. This connection device includes a flange member 61, a core connection member 67, a holder 68, an O-ring 69, a clamp member 65, and a flange member 63. Among these, the flange members 61 and 63 are provided in a state of being fixed to the outer conductors 42a and 44a of the adapter 42 and the coaxial feeder 44 by welding in advance, and are transported to the place where the antenna is installed. At the place where the antenna is installed, first, a holder 68 in which a pair of half-moon shaped members 68 a and 68 b are combined is attached around the central portion of the core connecting member 67. The holder 68 is formed with four openings 68c so as to ensure air circulation between the outer conductors 42a and 44a. Next, the lower end portion of the core connection member 67 is inserted into the center conductor 44 b of the coaxial power supply line 44, and the holder 68 is inserted until it is fitted into the annular step 63 e of the flange member 63. Next, the O-ring 69 is fitted into the annular groove 63 f of the flange member 63. In this state, the adapter 42 and the coaxial power supply line 44 are brought close to each other, and both flange members 61 and 63 are brought into contact with each other. Thereby, the annular rib which makes a pair of taper surfaces 61a and 63a a side slope is formed in the circumference | surroundings of the outer conductors 42a and 44a. Thereafter, the nut member 65f is loosened so that the bolt member 65e is removed from the U-shaped groove 72 at the end of the chuck member 65b, and the chuck members 65a, 65b thus released at both ends are connected to the flange members 61, 63. Wrap around the annular rib formed by abutment. After that, if the front end side of the bolt member 65e is fitted into the U-shaped groove 72 and the nut member 65f is tightened with an appropriate torque determined by the standard, the flange members 61 and 63 are mutually connected with a force corresponding to this torque. Be joined. Thereafter, the split pin 77 is passed through the hole 76 provided at the tip of the chuck member 65b, thereby preventing the tip side of the bolt member 65e from coming out of the U-shaped groove 72. According to the above connection method, the adapter 42 and the coaxial power supply line 44 can be connected to each other by a simple and quick operation in which both ends of the chuck members 65a and 65b are tightened only once using the bolt member 65e and the nut member 65f. It can be fixed with airtightness evenly.

  FIG. 7 is a partial cross-sectional view illustrating an example in which the joint portion 32 of FIG. 2 is partially changed. In this case, the adapter 42 in FIG. 2 is connected to the corrugated coaxial power supply line 144 via the connector 143 instead of the concentric cylindrical coaxial power supply line 44 on the downward side.

  The corrugated coaxial feeder 144 includes a resin anticorrosion layer 144d that covers the corrugated outer conductor 144a, and an insulator layer 144e disposed between the outer conductor 144a and the center conductor 144b. A cylindrical terminal 146 is attached to the end of the corrugated coaxial feeder 144, and the male threaded tip of the exposed outer conductor 144 a is screwed into the female thread portion 146 a of the terminal 146 and fixed. The anticorrosion layer 144d is fitted into the collar portion 146b and sealed by the O-ring 146d. The tip of the center conductor 144b is held at the center of the outer conductor 144a by a holder 146g made of an insulator. A connection flange 146e is formed on the outer periphery of the terminal 146.

  The connector 143 includes an outer conductor 143a and a core connection member 143b. A flange member 163 having the same shape and structure as the flange member 63 shown in FIG. 2 and the like is fixed to the upper end of the outer conductor 143a by welding. Further, a connecting flange member 143e is formed at the lower end of the outer conductor 143a. The flange member 143e is securely fixed to the flange 146e provided on the terminal 146 using a bolt 146f. At this time, the outer conductor 143a of the connector 143 and the distal end portion of the outer conductor 144a of the corrugated coaxial feeder 144 are brought into contact with each other to ensure conduction.

  An attachment fitting 143g is provided at the lower end of the core connection member 143b, and enables reliable electrical connection with the central conductor 144b of the corrugated coaxial feeder 144. On the other hand, a plurality of slits 143h extending in the axial direction are formed at the upper end of the core connecting member 143b, and a spring 143i for expanding the diameter is fitted inside. A holder 158 having the same shape and structure as the holder 58 shown in FIG. 2 or the like is attached around the base side of the slit 143h, and holds the core connecting member 143b at the center of the flange member 163.

  The connection between the connector 143 described above and the adapter 42 shown in FIG. 2 and the like is the same as that shown in FIG. That is, with reference to FIGS. 6 and 7, the coaxial feeder 44 is replaced with a connector 143. First, the O-ring 69 of FIG. 6 is fitted into the annular groove 63f of the flange member 163 of FIG. In this state, the adapter 42 and the connector 143 are brought close to each other, and the pair of flange members 61 and 163 are brought into contact with each other. Then, the chuck members 65a and 65b are wound around the outer periphery of the flange members 61 and 163 that are abutted. Thereafter, the front end side of the bolt member 65e is fitted into the U-shaped groove 72, and the nut member 65f is tightened with an appropriate torque determined by the standard, thereby connecting the flange members 61 and 163 to each other with an appropriate pressing force. . Thereafter, the split pin 77 is passed through the hole 76 provided at the tip of the chuck member 65b.

  FIG. 8 is a cross-sectional view for explaining a main part of the elbow part 34 of FIG. The elbow type coaxial power supply line 134 connects a pair of rod portions 137a and 137b with bolts 138 by welding an L-shaped outer conductor 134a formed by welding a pair of tube portions 136a and 136b in a direction orthogonal to each other. And an L-shaped center conductor 134b. The center conductor 134b is held in a state of being positioned at the center of the outer conductor 134a by insulator holders 139a and 139b. The holders 139a and 139b have ventilation openings 139c and 139d.

  Flange members 261 and 263 having the same shape and structure as the flange members 61 and 63 shown in FIG. 2 and the like are attached to both ends of the outer conductor 134a by welding. One flange member 261 is fitted with a holder 158, and the holder 158 holds a core connecting member portion 137h extending from the center conductor 134b at the center of the flange member 261.

  The elbow type coaxial feeder 134 shown in FIG. 8 can be connected to a coaxial feeder (not shown) having the same structure as the coaxial feeder 44 shown in FIG. For example, the flange member 261 side will be described. First, the O-ring 69 is fitted into the annular groove 261f of the flange member 261. In this state, the flange member 261 is brought into contact with a flange member provided on a coaxial power supply line (not shown). At this time, the core connecting member portion 137h is inserted into a hole opened at the end of the central conductor of the counterpart coaxial feeder. Thereafter, the chuck members 65a and 65b of the clamp member 65 shown in FIG. 3 and the like are wound around the pair of flange members abutted against each other, and the clamp member 65 is tightened using the bolt member 65e and the nut member 65f. Are connected to each other with an appropriate pressing force. In addition, a pair of elbow type coaxial feeders 134 can be formed in a crank shape by connecting with a clamp member 65 shown in FIG. 3 or the like, and an elbow portion 34 as shown in FIG. 1 can be formed.

[Second Embodiment]
FIG. 9 is a diagram for explaining a connection device for a high-frequency power supply line or a communication power supply line according to the second embodiment. FIG. 9A is a side view of the connection device, and FIG. 9B is a plan view of the connection device. In the case of the connecting device according to the second embodiment, the clamp member 365 is provided with an accessory. That is, a bridge member 391a extending in the axial direction from one chuck member 65a of the clamp member 365 is fixed by welding or the like. A curved contact member 392a that contacts the outer surface of the outer conductor 342a of the coaxial power supply line 342 is fixed to the bent end of the bridge member 391a by welding or the like. Similarly, the other chuck member 65b is also provided with a bridge member 391b extending in the axial direction and a contact member 392b that contacts the outer surface of the outer conductor 44a of the coaxial feeder 44. Here, the bridge members 391a and 391b and the contact members 392a and 392b constitute a support member for supporting the chuck members 65a and 65b.

  9 is the same as that of the first embodiment up to the middle. That is, a pair of coaxial feeders 44 and 342 are brought close to each other and both flange members 61 and 63 are brought into contact with each other. Wrap around Thereafter, when the front end side of the bolt member 65e is fitted into the U-shaped groove 72 and the nut member 65f is tightened with an appropriate torque determined by the standard, both flange members 61, 63 are applied with a force corresponding to the torque by the tightening. Are joined together. At this time, the contact member 392a is in contact with the outer surface of the outer conductor 342a, and the contact member 392b is in contact with the outer surface of the outer conductor 44a. In this state, a hose band 393a, which is a fixing member, is attached around the contact member 392a and the outer conductor 342a, and is fixed by tightening with a bolt 394a. The hose band, which is a fixing member, is provided around the contact member 392b and the outer conductor 44a. 393b is attached and fixed with bolts 394b.

  When the connection device as in the second embodiment is used, vibrations of the coaxial feeders 44 and 342 after connection can be reduced. That is, since the steel tower 14 receives strong winds and the like, stress may concentrate on the connection portion of the coaxial power supply lines 44 and 342, and a slight vibration may occur around the connection portion. When accessory parts such as the contact members 392a and 392b as in the present embodiment are provided, stress concentration on the connection portion can be prevented, so that the vibration of the coaxial feeders 44 and 342 can be suppressed, and the impedance thereof Characteristics and durability can be maintained in a good state. Furthermore, when the link 65c and the fastening member 65d are damaged, it is possible to prevent the chuck members 65a and 65b from being immediately dropped.

[Third Embodiment]
FIG. 10 is a diagram for explaining a connection device for a high-frequency power supply line or a communication power supply line according to the third embodiment. This clamp member 465 is a modification of the clamp member 65 of FIG. 3, and includes three chuck members 465a, 465b, and 465c, and links 465d and 465e that connect these chuck members 465a, 465b, and 465c in series, A fastening member 465f for fastening these connected chuck members 465a, 465b, and 465c so as to be separable at both ends is provided. Here, the fastening member 465f has the same structure as the fastening member 65d of FIG. Although not shown, each of the chuck members 465a, 465b, and 465c has a V-groove having a substantially V-shaped cross section on the inside, and a pair of flange members 63 (the flange member 61 is the flange member 63). Can be connected to each other with a suitable pressing force.

[Fourth Embodiment]
In the fourth embodiment, the connection device for the high-frequency power supply line or the communication power supply line of the first embodiment is incorporated in another facility. FIG. 11 is a diagram for explaining the installation of the connection device for the high-frequency power supply line in the fourth embodiment. Fig.11 (a) shows the external appearance of an antenna installation, FIG.11 (b) is a figure explaining the wiring of a coaxial feeder.

  As shown in FIG. 11A, not only the transmitting antenna 18 but also the receiving antenna 518 is attached around the support column 16 extending from the tip of the steel tower 14.

  As shown in FIG. 11 (b), the coaxial feed line Ce extending from the receiving antenna 518 is connected to a receiver 522 provided in the station building 12.

  The coaxial power supply line Ce includes a joint portion 532 and an elbow portion 534 at appropriate positions from the receiving antenna 518 to the station building 12. In these joint part 532 and elbow part 534, electrical connection between the outer conductor and the center conductor is performed while matching impedance. At this time, the connection at the joint portion 532 is achieved by the adapter 42, the connector 143, and the clamp member 65 shown in FIGS. 2 to 7, or by the clamp member 465 shown in FIG. Further, the connection at the elbow portion 534 is achieved by the clamp member 65 shown in FIG. 3 and the elbow type coaxial power supply line 134 shown in FIG. 8, or by the clamp member 465 shown in FIG.

[Fifth Embodiment]
In 5th Embodiment, the connection apparatus of the electric wire for communication or the feeder for communication of 1st Embodiment is integrated in another installation. FIG. 12 is a diagram for explaining the installation of the communication wire connecting device in the fifth embodiment. FIG. 12A shows the appearance of the antenna equipment, and FIG. 12B is a diagram for explaining the wiring of the coaxial feeder.

  As shown in FIG. 12A, three transmission / reception antennas 618 are attached around the support column 16 extending from the tip of the steel tower 14.

  As shown in FIG. 12 (b), a plurality of coaxial feed lines C 11, C 12, C 21, C 22, C 31, C 32 extending from a radio 622 that is a communication device provided in the station 12 are connected via a gas introduction part 25. Extend outside the building 12. The coaxial power supply lines C11 to C32 extend along the steel tower 14 and the column 16 and are connected to the distributor 626, respectively. The coaxial feed line extending from each distributor 626 is connected to each element of three transmission / reception antennas 618.

  Each of the coaxial power supply lines C11 to C32 has a passage space through which a dry gas passes between the outer conductor and the central conductor constituting each of the coaxial feeders C11 to C32. It is sent out to the distributor 626 and further to the antenna 618 through the space. Further, each of the coaxial power supply lines C 11 to C 32 has a joint portion 32 at an appropriate position such as in the vicinity of the distributor 626, and further has an elbow portion 634 at an appropriate position reaching the distributor 626. In these joint portion 632 and elbow portion 634, the external conductor and the central conductor are electrically connected while matching the impedance. In such connection, the inside of each of the coaxial feed lines C11 to C32 is established. Sealing is performed so that the airtightness of the passage space is maintained. At this time, the connection at the joint portion 632 is achieved by the adapter 42, the connector 143, and the clamp member 65 shown in FIGS. 2 to 7, or by the clamp member 465 shown in FIG. Further, the connection at the elbow part 634 is achieved by the clamp member 65 shown in FIG. 3 and the elbow type coaxial power supply line 134 shown in FIG. 8, or by the clamp member 465 shown in FIG.

[Sixth Embodiment]
FIG. 13 is a diagram illustrating a connection device for a high-frequency power supply line or a communication power supply line according to the sixth embodiment. The clamp member 765 is a modification of the clamp member 65 of FIG. 3, and has a pair of chuck members 65a and 65b connected by a link 65c. The chuck members 65a and 65b connected in this way are detachably fastened by fastening members 765d at both ends. The fastening member 765d has a bolt member 765e having a small hole 774 at the tip, and can insert a split pin (not shown). The nut member 765f of the clamp member 765 uses a single nut.

  The fastening operation by the clamp member 765 is substantially the same as in the first embodiment. That is, first, similarly to the case of FIG. 6, the core connecting member 67, the holder 68, and the O-ring 69 are fitted into the flange member 63. In this state, the other flange member 61 is brought into contact with the flange member 63. Next, the chuck members 65a and 65b are wound around the outer circumferences of the flange members 61 and 63 that are abutted. Thereafter, the front end side of the bolt member 765e is fitted into the U-shaped groove 72, and the nut member 765f is tightened with an appropriate torque defined in the standard, thereby connecting the flange members 61 and 63 to each other with an appropriate pressing force. . Thereafter, a split pin (not shown) is passed through a hole 76 provided at the tip of the chuck member 65b and a hole 774 provided at the tip of the bolt member 765e.

  Thus, by passing the split pin through the hole 774 at the tip of the bolt member 765e, the nut member 765f can be prevented from loosening to some extent, the nut member 765f can be prevented from falling off, and the tip side of the bolt member 765e is U-shaped. Easily coming out of the groove 72 is prevented.

  Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments. For example, in the above-described embodiment, the coaxial cable connecting device and method have been described. However, the flange member 61, 63, the clamp member 65, the O-ring 68, etc. illustrated in FIG. The ends of the pair of waveguides can be connected to each other.

  As is apparent from the above description, according to the high-frequency power supply line or communication power supply line connecting device according to the present invention, the chucks connected in series around the first and second flange members in a butted state. The first and second flange members can be securely fixed by a simple operation in which the members are wound so that both ends of the chuck members are fastened by the fastening members. At this time, since the V-groove provided in each chuck member presses the first and second tapered surfaces to crimp the first and second flange members together, the outer conductor of the high-frequency feed line and the outer conductor of the other member Can be securely connected with airtightness.

  Further, according to the method of connecting the high-frequency power supply line or the communication power supply line according to the present invention, the chuck members connected in series are arranged so as to be wound around the first and second flange members, and these chucks are arranged. The first and second flange members can be reliably fixed to each other by a simple operation of tightening both ends of the member with the fastening members. In addition, since the V-groove provided in each chuck member presses the first and second tapered surfaces to crimp the first and second flange members together, the outer conductor of the high-frequency feed line and the outer conductor of another member It can be securely connected with airtightness.

It is a figure explaining installation of the connection apparatus of the high frequency feed line which concerns on 1st Embodiment, (a) shows the external appearance of an antenna installation, (b) is a figure explaining the wiring of a coaxial feed line. . It is a fragmentary sectional view of the joint part of FIG. It is a top view explaining the structure of a clamp member. (A), (b) is sectional drawing explaining the structure of the chuck member of FIG. It is the elements on larger scale explaining the modification of the engaging part of a nut and a chuck member. It is a disassembled perspective view explaining the connection apparatus in the joint part shown in FIG. It is a fragmentary sectional view explaining the example which changed the joint part of FIG. 2 partially. It is sectional drawing explaining the principal part of the elbow part of FIG. (A), (b) is a figure explaining the connection apparatus of the high frequency electric power feeding line which concerns on 2nd Embodiment. It is a figure explaining the connection apparatus of the high frequency electric power feeding line which concerns on 3rd Embodiment. It is a figure explaining the connection apparatus of the high frequency electric power feeding line which concerns on 4th Embodiment. It is a figure explaining the connection apparatus of the high frequency electric power feeding line which concerns on 5th Embodiment. It is a figure explaining the connection apparatus of the high frequency electric power feeding line which concerns on 6th Embodiment.

Explanation of symbols

42 Adapter 42a, 44a Outer conductor 44 Coaxial feeder 44a Outer conductor 44b Center conductor 58 Holder 61, 63 Flange member 61a, 63a Tapered surface 65 Clamp member 65a, 65b Chuck member 65c Link 65d Fastening member 65e Bolt member 65f Nut member

Claims (18)

A connection device for a high-frequency power supply line for connecting the end of a high-frequency power supply line having a cylindrical outer conductor and the end of another member with the axes aligned with each other,
A first taper surface that is provided at an end of the high-frequency power supply line and that increases in diameter toward the front end side of the high-frequency power supply line; and a front end side of the first taper surface that is perpendicular to the axis A first flange member having an annular first joining surface;
A second tapered surface having substantially the same outer diameter as the first flange member and provided at the end of the other member, and increasing in diameter toward the distal end side of the end of the other member; A second flange member having an annular second joining surface on the tip side of the second tapered surface and perpendicular to the axis;
While having a pair of V-grooves in contact with the first and second tapered surfaces corresponding to the side slopes of the annular rib formed in a state where the first and second joint surfaces are in contact with each other, A plurality of arc-shaped chuck members having substantially the same radius of curvature as the first and second flange members as a whole, connecting means for connecting the plurality of chuck members in series, and the plurality of chuck members connected in series A connecting device for a high-frequency power supply line, comprising: clamping means having a fastening member that fastens both ends of the fastening member in a separable manner.   The high-frequency feed line connecting device according to claim 1, wherein the high-frequency feed line is a coaxial feed line that further includes an axial conductor inside the outer conductor via an insulator.   The high-frequency feeder connection device according to claim 1, wherein the plurality of chuck members are a pair of semicircular chuck members.   4. The connection of the high-frequency power supply line according to claim 3, wherein the V grooves of the pair of semicircular chuck members are partially in contact with the first and second tapered surfaces at a plurality of locations, respectively. apparatus.   3. The high frequency device according to claim 1, wherein the V grooves of the plurality of chuck members are partially in contact with the first and second tapered surfaces at a plurality of locations. 4. Feeder connection device.   6. The high frequency feeder connection apparatus according to claim 5, wherein a side surface of the V groove has a protrusion at the partial contact portion.   6. The high frequency feeder connection apparatus according to claim 5, wherein the partial contact portions are arranged at equal intervals along the tapered surface.   The connection means includes a link member for connecting the connection end portions of a pair of chuck members among the plurality of chuck members to each other at two fulcrums. A connection device for a high-frequency feed line according to claim 1.   The high frequency power supply line connection according to any one of claims 1 and 2, wherein the plurality of chuck members are three or more arc-shaped chuck members each having substantially the same length. apparatus.   The fastening member is pivotally supported at one end of the plurality of chuck members connected in series on the base side, and is bolted into a groove formed on the other end of the plurality of chuck members connected in series on the tip side. The high-frequency feeder connection device according to any one of claims 1 to 9, further comprising a member and a nut member screwed into the bolt member.   11. The high frequency feeder connection device according to claim 10, wherein the plurality of chuck members have a recess for receiving a tip engaging portion of the nut member on a tip side.   The high-frequency power supply line connecting device according to claim 11, further comprising locking means for preventing the bolt member from being detached from the groove.   A support member extending along at least one of the outer conductor of the high-frequency power supply line and the outer conductor of the end of the other member from at least one of the plurality of chuck members, and an end of the support member 13. The fixing device according to claim 1, further comprising a fixing member that is fixed to either the outer conductor of the high-frequency feed line or the outer conductor of the end of the other member. High frequency feeder connection device.   2. An annular groove is formed on one outer side of the first and second joining surfaces along the joining surface, and an O-ring is embedded in the annular groove. The high-frequency feeder connection apparatus according to any one of claims 13 to 14.   The alignment means according to any one of claims 1 to 14, further comprising alignment means provided between the first and second joint surfaces for positioning the first and second flange members. High frequency feeder connection device.   The high-frequency power supply line is a coaxial power supply line further including an axial core conductor through an insulator inside the outer conductor, and the alignment means is configured to connect the axial core conductor to the first and second flange members. The high-frequency feed line connecting device according to claim 15, wherein the positioning is performed.   5. The high frequency feeder connection device according to claim 4, wherein the pair of semicircular chuck members determine a partial contact portion in the previous period by adjusting an overall shape. A tapered first flange member that is provided at the end of the high-frequency power supply line and that increases in diameter toward the distal end side of the high-frequency power supply line, and has an outer diameter that is substantially the same as the first flange member. And a tapered second flange member which is provided at the end of another member to be connected to the high-frequency power supply line and whose diameter increases toward the tip of the end of the other member. Forming an annular rib in contact with each other;
Clamping means having a plurality of arc-shaped chuck members having a V-groove on the inside and generally having the same radius of curvature as the first and second flange members as a whole is provided with the V-groove on a pair of side slopes of the rib. A step of arranging around the rib so as to abut,
A high-frequency power supply line including a step of fixing the high-frequency power supply line and the other member with their axes aligned by fastening the clamping means disposed around the rib with a predetermined force at both ends. Connection method.

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