JP2016015394A - Impedance bond - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement an impedance bond that is capable of being disassembled/reassembled into/from parts with weight capable of being carried by one adult and makes it possible to more easily perform work for replacing the impedance bond.SOLUTION: An iron core part has a structure in which divided iron cores are assembled so as to be vertically opposite to each other in an iron core accommodation frame 30 and to which a compression load is applied by an iron core pressing part 80 to be fastened by an adjustment fastener 36. An impedance bond 2 assembled in advance in a factory includes an adjustment fastener 36 whose interference is adjusted so as to generate a compression load for being capable of obtaining a desired magnetic excitation characteristic. The impedance bond after the adjustment can be disassembled into parts capable of being carried into a construction site by human power, eliminating the need for a heavy weight carrying device or the like. In reassembling the impedance bond, the compression load adjusted in the factory can be easily reproduced by using the adjustment fastener 36, eliminating the need for readjustment work for the magnetic excitation characteristic, an adjustment measurement instrument, or the like at the construction site.

Description

  The present invention relates to an impedance bond installed at a track circuit boundary of a multi-track track circuit.

  In one of the conventional impedance bonds, an interior member such as an iron core and a primary coil or a secondary coil is housed in a metal case, and a resin for insulation and heat dissipation is poured into the gap between the metal case and the interior member for cooling. A fixed resin-fixed impedance bond is known (see, for example, Patent Document 1).

JP-A-4-370911

  The resin-fixed impedance bond cannot be substantially decomposed and is extremely heavy. Therefore, when a failure such as coil disconnection occurs or when it is periodically replaced, it is necessary to separately prepare a device for transporting heavy objects, which requires a lot of time and man-hours for transportation and installation. In some cases, train operation had to be stopped for a long time.

  The same applies to an insulating oil type impedance bond that fills the insulating oil between the metal case and the built-in member. Insulating oil type impedance bonds can be disassembled and repaired on site by removing the insulating oil, but adjustment work is required to exhibit appropriate excitation characteristics (excitation impedance performance) during reassembly. The adjustment work requires a lot of labor such as exchanging the gap paper sandwiched between the iron cores, winding a band for fixing and maintaining the gap around the iron core, and adjusting the tightening. Furthermore, during the adjustment, a confirmation test of the electrical performance is required, and an external power supply for that purpose must be prepared and carried in. Therefore, it is common to replace the insulating oil type impedance bond with a new one even at the time of failure.

  The present invention has been made in view of such circumstances, and an object thereof is to realize an impedance bond that is easier to replace.

A first invention for solving the above-described problem is an impedance bond in which a coil portion is arranged so as to pass through a hollow portion of an iron core that is formed in an annular shape by arranging a lower divided iron core and an upper divided iron core so as to face each other. And
The impedance bond components including the iron core and the coil portion are configured to be disassembled and assembled,
The adjustment means for adjusting the compressive load in the opposing direction in the opposing arrangement and the load action means for acting / releasing the adjusted compression load, and the adjusted compression by acting the load action means Adjustment load fixing means (for example, the adjust fastener 36 in FIG. 5) for fixing the lower divided iron core and the upper divided iron core with a load;
Impedance that makes it possible to reproduce the desired excitation characteristics by applying the load application means when the assembly is once assembled and the compressive load is adjusted so as to obtain the desired excitation characteristics and then disassembled and reassembled. It is a bond.

  According to the first invention, the adjusted compressive load can be actuated / released, so that the components of the impedance bond can be disassembled and reassembled, and the compressed compressive load adjusted before disassembly can be reassembled. Can be reproduced without adjustment. That is, if an impedance bond is assembled in advance and the excitation characteristics are adjusted, it can be disassembled and carried in, and can be easily restored to the state before disassembly without an electrical test for adjustment on site. Since each component has a weight that can be carried by human power, it is not necessary to prepare a separate device for transporting heavy objects, and replacement can be performed in much less time and man-hours than in the past.

  In the second invention, the iron core faces the first lower divided iron core (for example, the lower right divided iron core 50 in FIG. 4) and the first upper divided iron core (for example, the upper right divided iron core 54 in FIG. 4). A first iron core configured and disposed, a second lower divided iron core (for example, the lower left divided iron core 52 in FIG. 4) and a second upper divided iron core (for example, the upper left divided iron core 56 in FIG. 4). An iron core structure having an outer iron core structure having a second iron core configured to be opposed to each other, wherein the adjustment load fixing means holds the first upper divided iron core and the second upper divided iron core together. The impedance bond according to the first aspect of the present invention, further comprising a pressing portion (for example, an iron core pressing portion 80 in FIG. 5), wherein the adjusting means can be adjusted by using the pressing of the iron core pressing portion as the compression load.

  According to the second invention, among the components of the impedance bond, the extremely heavy iron core can be disassembled into at least four, so that the transportation becomes easier. Nevertheless, the reassembled iron core can be put together by the iron core holding part so that a compressive load can be applied, so that assembly is easy.

  According to a third aspect of the present invention, the adjusting means and the load acting means are constituted by a tightening adjustment type patch-on lock, and the iron core holding part has the first upper divided iron core and the second upper divided iron core in a top view. The impedance bond according to the second aspect of the present invention, wherein a plurality of the fastening margin adjustment type patch-on locks are provided in the iron core holding part.

  According to the third invention, since the adjusting means and the load acting means are collectively realized by a tightening adjustment type patch-on lock, assembly can be facilitated while reducing the number of parts. Moreover, the structure which hold | suppresses a 1st upper side split iron core and a 2nd upper side split iron core separately by making an iron core holding | suppressing part the structure which passes a 1st upper side divided iron core and a 2nd upper side divided iron core. It is possible to reduce the number of installation of the interference adjustment type patch and lock. Adjustment work can be reduced and assembly is easier. In addition, the plurality of tightening adjustment type patch-on locks facilitates the overall balance adjustment of the compression load and has high reproducibility.

  According to a fourth aspect of the present invention, the component includes 1) a pedestal, 2) standing on the pedestal, and arranging the first lower divided core and the second lower divided core in parallel at predetermined positions. And a position of the first lower divided core, the first upper divided core, the second lower divided core, and the second upper divided core with respect to each other. It is the impedance bond of 2nd or 3rd invention provided with the incorrect assembly | attachment prevention structure (for example, alignment marker 57a-57d of FIG. 4) which prevents arrange | positioning a relationship accidentally.

  According to the fourth invention, even if the divided iron cores are separated after the excitation adjustment, the positional relationship can be correctly restored at the time of reassembly.

The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The serial number perspective view which shows the structural example and assembly procedure of an impedance bond. The figure for demonstrating how to use an impedance bond.

  1 to 8 are serial number perspective views showing a configuration example and assembly procedure of the impedance bond 2 to which the present invention is applied. The impedance bond 2 is configured such that each component can be disassembled and assembled. The components of the present embodiment include at least (A) an iron core that is a split iron core that is divided into upper and lower parts, and (B) a coil portion that is a coil assembly 60 and a tertiary coil 70.

  As shown in FIG. 1, the impedance bond 2 has a front terminal block 10, a rear terminal block 20, and an iron core that opens widely at the top and the front and rear at predetermined positions on the upper surface of the base 4 that contacts the bottom of the metal case. Frame 30. The pedestal 4, the front terminal block 10, the rear terminal block 20, and the iron core receiving frame 30 are configured to have a weight (for example, 30 kg or less) that can be carried by one adult even when integrally connected and fixed. .

An iron core, a coil, or the like is inserted into the iron core housing frame 30 from the upper opening to the inside of the frame.
The iron core in the present embodiment is divided into four parts, left, right and up and down when viewed from the front so that the weight can be carried by one adult. In the present specification, they are referred to as “divided iron cores”. The split iron core is provided with a groove, and when the upper and lower pairs are arranged to face each other, the facing groove constitutes a hollow portion of the iron core.

  In the example of FIG. 1, the lower right divided iron core 50 is already stored in the iron core housing frame 30, and shows a state before the lower left divided iron core 52 is accommodated. The lower right divided iron core 50 and the lower left divided iron core 52 are accommodated in the iron core accommodating frame 30 in such a posture that the opening of the groove portion 59 faces upward and the longitudinal direction of the groove portion 59 is the front-rear direction of the impedance bond 2. If two of the four corners of the split iron core are slid down against the inner corner of the iron core receiving frame 30, they are naturally guided to a predetermined position, and the lower right split iron core 50 and the lower left split iron core 52 are arranged side by side. They are placed in close contact (see FIG. 2).

  In order to store the split iron core in the iron core housing frame 30, it is preferable to use the iron core transporting jig 6. For example, a form in which a grip handle is fixed to a “magnet chuck” or “magnet stand” is known as the iron core transporting jig 6.

  As shown in FIG. 2, when the lower right divided iron core 50 and the lower left divided iron core 52 are accommodated in the iron core accommodating frame 30, the coil assembly 60 is then assembled.

The coil assembly 60 is configured such that annular primary coils 61a and 61b are laid on top and bottom, and a secondary coil 62 is inserted between them and connected together so that one adult can carry it.
The primary coils 61a and 61b and the secondary coil 62 may be integrated by a molding method using a synthetic resin, or may be integrated by winding with a glass fiber cloth tape. A secondary coil terminal 63 connected to the secondary coil 62 is provided at the upper front of the coil assembly 60, and a neutral terminal 64 and both side terminals 65 connected to the primary coils 61a and 61b are provided at the upper rear. Is provided. Therefore, when viewed from above, the coil assembly 60 has three terminals extending backward from the main annular portion.

  The coil assembly 60 is slid while pressing the rear end of the main annular portion against the resin plate 21 on the front wall surface of the rear terminal block 20, and the left and right sides of the annular portion are respectively located above the lower right divided core 50 and the lower left divided core 52. It is lowered so as to be inserted into the groove part 59 opened in.

  In the coil assembly 60, 1) the bottom of the annular portion is in contact with the groove bottom of the groove portion 59, 2) the rear end of the annular portion is in contact with the resin plate 21, and 3) the right and left outer surfaces of the annular portion are the lower right split core 50. The groove portion right inner surface and the groove lower left inner surface of the lower left divided core 52 are in contact with at least one of the groove portion left inner surface and are positioned and installed at predetermined positions with respect to the lower right divided core 50 and the lower left divided core 52. become.

  When the coil assembly 60 is positioned, the neutral terminal 64 just contacts the neutral terminal connecting portion 22 provided at the left and right center of the rear terminal block 20, so that they are connected (see FIG. 3). Further, the both side terminals 65 are in contact with the both side terminal connecting portions 23 provided on the left and right sides of the rear terminal block 20 so that they are connected to each other. Further, the secondary coil terminal 63 is connected to the secondary coil connecting portion 12 (see FIG. 2) of the front terminal block 10, and the assembly of the coil assembly 60 is completed.

  As shown in FIG. 3, when the coil assembly 60 is assembled, the tertiary coil 70 is connected to the inside of the ring of the annular portion of the coil assembly 60 (the combined portion of the primary coils 61a and 61b and the secondary coil 62), lower right. The split iron core 50 and the lower left split iron core 52 are assembled so as to be inserted into the grooves of the groove portions 59 from above.

  The tertiary coil 70 is in contact with at least one of the left and right outer surfaces on the inner side of the annular portion of the coil assembly 60, and further on at least one of the groove left inner surface of the lower right divided core 50 and the groove right inner surface of the lower left divided core 52 Abut and be positioned at a predetermined position. Then, the tertiary coil terminal 72 is connected to the tertiary coil terminal connection portion 14 of the front terminal block 10, and the assembly of the tertiary coil 70 is completed.

Next, as shown in FIG. 4, the upper right divided iron core 54 and the upper left divided iron core 56 are assembled.
On the lower surface of the upper right split core 54 and the upper left split core 56, the lower surface of the groove 59, that is, the abutting surface with the lower right split core 50 and the lower left split core 52 is a piece of paper or the like for maintaining a gap between the upper and lower split cores. A gap adjusting material 58 is attached.

  The upper left split iron core 56 is placed from above so that the groove portion 59 faces downward and the longitudinal direction of the groove matches the front and rear direction of the impedance bond 2 so as to face the lower left split iron core 52. If two of the four corners of the split core are brought into contact with the inner corner of the core receiving frame 30 and are slid down, they are naturally guided to a predetermined position, and the left and right annular portions of the assembled coil assembly 60 and the tertiary coil The left and right sides of 70 are accommodated in the groove 59. Similarly, the upper right divided iron core 54 is placed from above so that the groove portion 59 faces downward and the groove longitudinal direction is aligned with the front and rear direction of the impedance bond 2 so as to face the lower right divided iron core 50.

When the upper right divided iron core 54 and the upper left divided iron core 56 are assembled, the four divided iron cores, which are separated, are brought into close contact with each other vertically and horizontally, and when viewed from the front, a lump having a side shape like the number 8 lying on its side. The outer iron core structure, that is, the outer iron core structure is completed.
Since the alignment markers 57a, 57b, 57c, and 57d are provided on the front side surfaces of the four divided iron cores as an example of an erroneous assembly prevention structure, the upper right divided iron core 54 and the upper left divided iron core 56 are assembled. After that, it is confirmed whether or not these alignment markers 57a to 57d have a predetermined arrangement relationship. If the four markers are not aligned on the front, it is determined that the split iron core has been misassembled and reassembled.

Next, as shown in FIG. 5, the iron core holding part 80 is attached.
The iron core holding portion 80 is a frame body that is placed across the upper surfaces of the upper right divided iron core 54 and the upper left divided iron core 56 and has the same horizontal width as the iron core housing frame 30. Positioning pins 84 and 85 project downward from the lower left surface and the lower right surface of the iron core holding part 80, respectively. When the iron core holding part 80 is put on the iron core housing frame 30 from above, the positioning pins 84 and 85 are provided. It is positioned and placed in a predetermined positional relationship by closely fitting with positioning holes 34 and 35 provided on the upper surfaces of the left and right wall portions of the iron core housing frame 30.

  The left and right sides of the iron core holding part 80 and the left and right sides of the iron core receiving frame 30 have a structure for preventing erroneous assembly so that they can be assembled only in a predetermined relationship. For example, the outer diameter of the pin and the inner diameter of the hole are different between the former group and the latter group so that the positioning pin 84 only fits the positioning hole 34 and the positioning pin 85 only fits the positioning hole 35. Also good. Or it is good also as a structure which understands that the positional relationship of the iron core accommodating frame 30 and the iron core holding | suppressing part 80 is incorrect at a glance by changing the position of the hole in the upper surface of the iron core accommodating frame 30 by right and left.

  When the iron core pressing portion 80 is placed at a predetermined position, the fastener receiving portions 86 at the four left and right corners are connected to the adjust fastener 36 provided in the iron core housing frame 30 to complete the assembly of the iron core holding portion 80. To do.

  The adjust fastener 36 is a means for adjusting / fixing the fastening force. In the present embodiment, the adjust fastener 36 is realized by a patch-on lock capable of adjusting and fixing the fastening allowance, but other mechanical elements may be used. Moreover, although the number of installations can be set as appropriate, it is preferable that the number of installations is plural.

  The iron core holding part 80 is connected to the iron core housing frame 30 by the adjust fastener 36 so that each pair of the divided iron cores arranged opposite to the base 4 is sandwiched in the opposite direction to apply a load (compressive load) in the opposite direction, The gap between the divided cores arranged opposite to each other is determined, and as a result, the excitation characteristics are determined.

  Next, as shown in FIG. 6, the neutral terminal connector 94 is connected and fixed to the neutral terminal connection portion 22 through the neutral terminal 64, and further, as shown in FIG. It is fixedly connected to the both side terminals 65. Then, as shown in FIG. 8, when the metal cover 96 is put on and the catch grips 97 with locks provided at the four corners are connected and fixed to the grip receiving portions 47 of the base 4, the assembly of the impedance bond 2 is completed.

  FIG. 9 is a diagram for explaining how to use the impedance bond 2 of the present embodiment. First, as described with reference to FIGS. 1 to 5, the impedance bond 2 is assembled at the factory. Then, the fastening allowance of the adjust fastener 36 is adjusted so that a desired excitation characteristic can be obtained. In other words, the adjustment fastener 36 is an example of an adjustment load fixing means, and a tightening portion of the adjustment fastener 36 constitutes an adjustment means for adjusting the compression load, and the adjustment fastener 36 that locks the adjustment fastener 36 to the fastener receiving portion 86. The locking portion constitutes a load acting means for acting / releasing the compression load adjusted by the tightening margin.

After the adjustment, a seal (for example, attaching a sealing plug, sticking a seal, etc.) for indicating that the adjustment has been completed can be applied to the adjustment portion of the adjust fastener 36 as appropriate.
If the finished product is stored in a warehouse or the like, it is stored after the assembly described with reference to FIGS. Alternatively, the neutral terminal connector 94, the double-sided terminal connector 95, the metal cover 90, and the like are left without being assembled, and are stored in a set together with the adjusted assembled product.

  When moving from the storage location to the installation location, the impedance bond 2 is disassembled in the reverse order of the procedure described with reference to FIGS. And if each part is assembled in order according to the procedure demonstrated in FIGS. 1-8 and connected with a track circuit etc. in the field, installation will be completed.

  Each component that becomes a disassembly unit, ie, a transport unit, is designed to have an upper limit of approximately 20-30 kg in weight, so there is no need to prepare a separate heavy-duty transport device, and the operator can hold it by hand. Can be transported. Therefore, the installation can be performed more quickly than before. In addition, if the parts that are transported are assembled in order according to the procedures described in FIGS. 1 to 8, the excitation characteristics set in the factory are immediately reproduced. There is no need to bring it in.

  The point that the heavy material transport device is unnecessary and the point that the readjustment work of the excitation characteristics on the site can be made unnecessary is that many impedance bonds must be replaced and installed in a short time, especially at the time of disaster recovery. This is extremely significant in situations where it is not possible.

  As described above, the impedance bond to which the present invention is applied has been described. However, the embodiment of the present invention is not limited to the above, and components can be added, omitted, or changed as appropriate.

  Some of the four adjust fasteners 36 may be fasteners (patton locks) that do not have a tightening adjustment function. For example, any one or two of the four that are diagonally related may have no tightening adjustment function.

  In addition, as a mechanism that replaces the adjust fastener 36, for example, a flange portion facing the iron core holding portion 80 and the iron core housing frame 30 is provided, and the flange portion is bolted. And the seal which described the fastening torque of each volt | bolt when adjusting an excitation characteristic may be stuck on the iron core pressing part 80, and the described fastening torque may be reproduced on the spot. However, the adjust fastener 36 serving as an adjustment load fixing means having an adjustment means and a load acting means is considered to be more preferable.

  Moreover, the decomposition unit of the impedance bond 2 is not limited to the example of the above embodiment. The disassembly unit can be set as appropriate as long as appropriate measures are taken to prevent reassembly of each disassembled part at the position prior to disassembly. For example, the pedestal 4, the front terminal block 10, the iron core housing frame 30, and the rear terminal block 20 have been described as being integrated, but these may be disassembled and each may be transported individually.

DESCRIPTION OF SYMBOLS 2 ... Impedance bond 4 ... Base 6 ... Iron core conveyance jig 10 ... Front terminal block 12 ... Secondary coil connection part 14 ... Tertiary coil terminal connection part 20 ... Back terminal block 21 ... Resin plate 22 ... Neutral terminal connection part 23 ... Both-side terminal connection part 30 ... Iron core receiving frame 34 ... Positioning hole 35 ... Positioning hole 36 ... Adjust fastener 47 ... Grip receiving part 50 ... Lower right divided core 52 ... Lower left divided iron core 54 ... Upper right divided iron core 56 ... Upper left divided iron core 57a 57d ... Positioning marker 58 ... Gap adjusting material 59 ... Groove 60 ... Coil assembly 61a, 61b ... Primary coil 62 ... Secondary coil 63 ... Secondary coil terminal 64 ... Neutral terminal 65 ... Both side terminal 70 ... Tertiary coil 72 ... Tertiary coil terminal 80 ... Iron core holding part 84 ... Positioning pin 85 ... Positioning pin 86 ... Fastener receiving part 94 ... Neutral terminal connector 95 ... Connector for both side terminals 96 ... Metal cover 97 ... Catch grip with lock

Claims (4)

An impedance bond in which a coil portion is disposed so as to pass through a hollow portion of an iron core configured in an annular shape by opposingly arranging a lower divided iron core and an upper divided iron core,
The impedance bond components including the iron core and the coil portion are configured to be disassembled and assembled,
The adjustment means for adjusting the compressive load in the opposing direction in the opposing arrangement and the load action means for acting / releasing the adjusted compression load, and the adjusted compression by acting the load action means An adjustment load fixing means for fixing the lower divided iron core and the upper divided iron core with a load;
Impedance that makes it possible to reproduce the desired excitation characteristics by applying the load application means when the assembly is once assembled and the compressive load is adjusted so as to obtain the desired excitation characteristics and then disassembled and reassembled. bond. The iron core opposes a first iron core configured by disposing a first lower divided iron core and a first upper divided iron core, and a second lower divided iron core and a second upper divided iron core. An outer iron core structure having a second iron core arranged and arranged;
The adjustment load fixing means further includes an iron core pressing part that holds the first upper divided iron core and the second upper divided iron core together, and the adjusting means adjusts the pressing of the iron core holding part as the compression load. Configured as possible,
The impedance bond according to claim 1. The adjusting means and the load acting means are constituted by a tightening adjustment type patchon lock,
The iron core holding part is a structure that passes the first upper divided iron core and the second upper divided iron core in a top view,
A plurality of the adjustment allowance type patchon locks are provided on the iron core holding part,
The impedance bond according to claim 2. The component includes
1) Pedestal,
2) Standing on the pedestal, and an iron core accommodating portion for arranging the first lower divided iron core and the second lower divided iron core in parallel at a predetermined position;
Is further included,
Misassembly that prevents the first lower divided iron core, the first upper divided iron core, the second lower divided iron core, and the second upper divided iron core from being misplaced. The impedance bond according to claim 2, further comprising a prevention structure.

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