JP3967316B2 - Pantograph support insulator and pantograph device - Google Patents

Description

  The present invention relates to a pantograph device that is installed on a roof of a vehicle such as a railway vehicle and takes in electric power from an overhead line, and a support insulator used for the device. In particular, the present invention is easy to manufacture and reduces the occupied area on the roof. The present invention relates to a pantograph support insulator and a pantograph device capable of reducing weight.

  2. Description of the Related Art A current collector that is installed on a roof of a vehicle such as a railway vehicle and takes in electric power from an overhead line is conventionally known (see, for example, Patent Documents 1 and 2).

  FIG. 4 shows a pantograph device as a conventional current collector. This pantograph device 1 is an insulating support of a single arm type pantograph 2 composed of upper arms 23a, 23b and lower arms 25a, 25b for raising and lowering a current collecting boat 20 by means of four porcelain support insulators 4. In each porcelain support insulator 4, one air path 40 is provided.

  Compressed air sent from a compressor (not shown) through the vehicle-side air pipe 3 passes through the air path 40 in each support insulator 4, passes through the apparatus-side air pipes 5a to 5d, and the lifting cylinder 27 is removed from the cylinder 27a. , The lower cylinder 27b is supplied to a rise detection unit (not shown), the key is released, the arms 23a, 23b, 25a, 25b are swung by the main spring 27c, and the current collecting boat 20 is raised in a substantially vertical direction. The current collecting boat 20 elastically contacts the overhead wire by the action of the damper 27d. When compressed air is supplied to the lowering cylinder 27b, the arms 23a, 23b, 25a, 25b are folded, and the keys act to return to the initial state.

The conventional current collector described in Patent Document 2 is a cylinder that lifts and lowers a current collector boat, which is insulated and supported by a single support insulator, and penetrates from the top surface of the insulator to the bottom surface inside the support insulator. A plurality of air paths are provided.
Japanese Unexamined Patent Publication No. 2000-23302 (paragraphs [0018] to [0021], FIGS. 1 to 4, 7, and 8) JP-A-7-31004 (paragraphs [0007] to [0009], FIG. 1)

  However, according to the conventional pantograph device, since the pantograph is supported by four support insulators having one air path, there is a problem that the occupied area on the roof of the vehicle increases and the vehicle weight increases. .

  Moreover, since the current collector described in Patent Document 2 has a structure in which a plurality of independent through holes are formed in a single support insulator, the weight of the current collector becomes heavy when viewed as a whole insulator. There is a problem that weight reduction is difficult. Further, if it is made of porcelain, there is a problem that it is difficult to manufacture because it is inferior in workability due to occurrence of cracks or cracks when an independent through hole is provided. Due to the weight, there is a problem that the vehicle is subjected to wind resistance when the vehicle is running, hindering the speeding up of the vehicle, and wind noise / noise is generated, which is not preferable for the environment along the railway.

  Accordingly, it is an object of the present invention to provide a pantograph support lever and a pantograph device that are easy to manufacture, can reduce the occupied area on the roof, and can reduce the weight of the vehicle body.

In order to achieve the above object, the present invention provides a support insulator for a pantograph that insulates and supports a pantograph on which a current collector boat is placed, a single insulator body having a single through hole, and the through hole of the insulator body A plurality of pipes arranged along the penetrating direction inside , an upper mounting bracket that is attached to an upper part of the insulator main body and upper ends of the plurality of pipes, a lower part of the insulator main body, and lower ends of the plurality of pipes There is provided a support insulator for a pantograph characterized by including a lower mounting bracket to be attached .

  The insulator body is preferably formed from porcelain.

  The plurality of tubes are preferably formed from FRP (reinforced plastic).

It is preferable that an insulating compound is filled in gaps between the plurality of tubes and the through hole of the insulator body.

In order to achieve the above object, the present invention provides a pantograph device having a pantograph on which a current collecting boat is placed and a support insulator for insulatingly supporting the pantograph, wherein the support insulator has a single through hole. An insulator main body, a plurality of pipes arranged in the through-hole of the insulator main body along the penetrating direction, an upper mounting bracket attached to an upper portion of the insulator main body and upper ends of the plurality of pipes, There is provided a pantograph device comprising a lower part of an insulator main body and a lower mounting bracket attached to lower ends of the plurality of pipes .

  According to the pantograph support insulator and the pantograph apparatus of the present invention, the insulator body is only formed with a single through hole, so that the manufacture is facilitated. In addition, since a plurality of pipes are arranged in a single insulator body, the number of supporting insulators to be used can be reduced, the occupied area on the roof can be reduced, and the weight of the vehicle body can be reduced.

  High insulation is obtained by forming the insulator body from porcelain.

  By forming the plurality of tubes from FRP (reinforced plastic), insulation is maintained and the strength of the tubes is improved.

  By filling the periphery of the plurality of tubes with an insulating compound, the insulating performance of the gap between the tubes and the insulator body is improved.

  Since a relatively large number of pipes can be arranged in the through holes of the lever body, a pantograph device having a small number of pantograph support levers can be obtained, and the vehicle body can be reduced in weight.

  FIG. 1 shows a pantograph apparatus according to an embodiment of the present invention. In this pantograph device 1, a single arm type pantograph 2 is insulated and supported on a vehicle roof by a single support insulator 10. Since the pantograph 2 of the present embodiment is the same as that described in FIG. 3, the description thereof is omitted here.

  Fig.2 (a) is a longitudinal cross-sectional view which shows the internal structure of the support insulator 10, The same figure (b) is the sectional view on the AA line of the same figure (a). The support insulator 10 includes a single porcelain insulator main body 11 having a single through hole 11a, and four air pipes 12a to 12d arranged in the through hole 11a of the porcelain insulator main body 11 along the penetration direction. An insulator upper fitting 13 joined to the upper part of the porcelain insulator main body 11 by the cement 19, an insulator lower fitting 14 joined to the lower part of the porcelain insulator main body 11 by the cement 19, and a bolt 6 to the insulator upper fitting 13 An upper mounting bracket 15 that is attached and a lower mounting bracket 16 that is attached to the insulator lower bracket 14 with bolts 6 are provided, and the bolts are passed through the bolt holes 15c of the upper mounting bracket 15 so that screw holes 13b of the insulator upper bracket 13 are provided. The pantograph 2 is mounted on the support insulator 10 by being fastened to the support insulator 10 and is supported by the bolts inserted into the bolt holes 14b of the insulator lower bracket 14. Insulator 10 is mounted on the vehicle roof.

  The air pipes 12a to 12d are made of an insulating material having insulating properties and high mechanical strength, for example, FRP (reinforced plastic), and an insulating compound 18 as an insulating reinforcing material in a gap with the through hole 11a of the porcelain insulator main body 11. Filled.

  The upper mounting bracket 15 is formed with four recesses 15a into which the upper ends of the four air pipes 12a to 12d are fitted, and vent holes 15b communicating from the four recesses 15a to the apparatus-side air pipe. Similarly to the upper mounting bracket 15, the lower mounting bracket 16 has four recesses 16a into which the lower ends of the four air pipes 12a to 12d are fitted, and a vent 16b that communicates from the four recesses 16a to the vehicle-side air piping. Is formed.

  An O-ring 17 is provided in the fitting portion between the recess 15a and the air pipes 12a to 12d of the upper mounting bracket 15 and the recess 16a and the air pipes 12a to 12d of the lower mounting bracket 16, thereby maintaining airtightness. Yes.

  The insulator upper fitting 13 and the insulator lower fitting 14 are coupled to the porcelain insulator main body 11 by a cement 19.

  In the pantograph device 1 configured as described above, compressed air sent from a compressor (not shown) via a vehicle-side air pipe is compressed into four air pipes 12 a to 12 d arranged in a single support insulator body 11. And is supplied to the pantograph 2 through the apparatus-side air piping, and supplied to the keying cylinder 27a, the lowering cylinder 27b, and the ascending detection unit (not shown) of the lifting mechanism 27 shown in FIG.

  According to the present embodiment, the porcelain insulator main body 11 is only formed with a single through hole 11a, so that it is easy to manufacture. Further, since the plurality of air pipes 12 are arranged in the single porcelain insulator body 11, the number of supporting insulators to be used can be reduced, the occupied area on the roof can be reduced, and the weight of the vehicle body can be reduced. Can do.

  Moreover, since the air pipe 12 is formed from FRP, insulation is maintained and the strength of the air pipe 12 itself is improved. Furthermore, by filling the periphery of the plurality of air tubes 12 with the insulating compound 18, the insulation performance of the gaps between the air tubes 12 and the porcelain insulator body 11 is improved.

  Further, since four air pipes 12 can be arranged in the through holes 11a of the porcelain insulator main body 11, a pantograph device having a small number of pantograph support insulators can be obtained, and the vehicle body can be reduced in weight.

  FIG. 3 is a cross-sectional view showing another embodiment of the air tube insulator. The four air pipes 12 may be arranged in a straight line in the through hole of the porcelain insulator body 11 as shown in FIG.

  In addition, although the said embodiment insulated and supported the pantograph with the support insulator, it is applicable also to the raising / lowering apparatus using a cylinder. The shape of the insulator main body may be cylindrical, but when the air resistance is further taken into consideration, an elliptical shape is preferable.

It is a perspective view of the pantograph device concerning an embodiment of the invention. (A) is a longitudinal cross-sectional view of the air tube insulator which concerns on embodiment of this invention, (b) is the sectional view on the AA line of (a). It is a cross-sectional view of an air tube insulator according to another embodiment of the present invention. (A) is a top view of the conventional electrical power collector, (b) is the sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pantograph device 2 Pantograph 3 Vehicle side air piping 4 Porcelain support insulators 5a, 5b, 5c, 5d Device side air piping 6 Bolt 10 Air tube insulator 11 Porcelain insulator main body 11a Through holes 12a to 12d Air tube 13 Insulator upper fitting 13a Uneven portion 13b Screw hole 14 Insulator lower portion 14a Uneven portion 14b Bolt hole 15 Upper mounting bracket 16 Lower mounting bracket 15a, 16a Recessed portion 15b, 16b Vent 15c Bolt hole 17 O-ring 18 Insulating compound 19 Cement 20 Current collector boat 21 Boat support 22a, 22b Pins 23a, 23b Upper arms 24a, 24b Hinges 25a, 25b Lower arms 26a, 26b Main shaft 27 Lifting mechanism 27a Key cylinder 27b Lower cylinder 27c Main spring 27d Oil damper 28 Cover 40 Air path

Claims (5)

In the support insulator of the pantograph that insulates and supports the pantograph on which the current collector boat is placed,
A single insulator body with a single through hole;
A plurality of tubes arranged along the penetration direction inside the through hole of the insulator body;
An upper mounting bracket that is attached to an upper portion of the insulator main body and upper ends of the plurality of tubes;
A support insulator for a pantograph, comprising: a lower portion of the insulator body; and a lower mounting bracket attached to lower ends of the plurality of tubes.   2. The support insulator for a pantograph according to claim 1, wherein the insulator body is made of porcelain.   2. The support insulator for a pantograph according to claim 1, wherein the plurality of tubes are made of FRP (reinforced plastic). The support insulator for a pantograph according to claim 1 or 3, wherein a gap between the plurality of tubes and the through hole of the insulator body is filled with an insulating compound. In a pantograph device having a pantograph on which a current collector boat is placed and a support insulator for insulatingly supporting the pantograph,
The support insulator includes a single insulator body having a single through hole, and a plurality of tubes disposed in the through hole of the insulator body along the penetration direction thereof.
An upper mounting bracket that is attached to an upper portion of the insulator main body and upper ends of the plurality of tubes;
A pantograph device comprising a lower part of the insulator main body and a lower mounting bracket attached to lower ends of the plurality of pipes.

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