JP2012224223A - Railroad vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railroad vehicle having such a truck structure that a soundproof member for reducing the rolling noise of a wheel can be put close to such a position that the wheel comes in contact with a rail to enhance a soundproof effect sufficiently.SOLUTION: The soundproof member 22 having flexibility is mounted to a holding member 21 fixed to an axle box 15. The holding member is fixed to the axle box outside a vehicle body of wheels 14b in such a state that the lower end of the holding member is located at a position higher than a preset position. The soundproof member is arranged in parallel with the rail on the outside of the vehicle body at such a position that the wheel is rolled on the rail 17. The upper part of the soundproof member is mounted to the holding member in such a state that the position thereof can be adjusted vertically and the lower part of the soundproof member is located above the surface of the rail.

Description

  The present invention relates to a railway vehicle, and more particularly, to a railway vehicle equipped with a carriage having a sound insulation structure for suppressing the diffusion of rolling noise of wheels.

  In a railway vehicle that travels at high speed, in consideration of the surrounding environment, a soundproof cover is provided to suppress diffusion of operating sound from an underfloor device that is a noise source. Also, in order to suppress the diffusion of the rolling noise of the wheels, the sound absorption along the longitudinal direction of the rails is located in the vicinity of the wheels in contact with the rails and away from the side surfaces of the wheels by the width of the rails in the width direction of the carriage. A railcar bogie having a material fixed to a shaft box is known (for example, see Patent Document 1).

  In this railway vehicle bogie, when a sound absorbing material is attached to the rail side of the mounting receiver made of an iron-based metal plate attached to the axle box, and the running railway vehicle derails, the wheel and the sound absorbing material (mounting receiver) The guide function by the rail is obtained by sandwiching the rail.

JP 2006-272994 A

  However, in the structure described in Patent Document 1, since the mounting receiver attached to the axle box body is made of metal, the position of the lower end of the mounting receiver is limited to a position higher than the vehicle limit and other set limits. For this reason, the position of the sound absorbing material becomes higher than the position where the wheel contacts the rail, and the rolling sound is diffused from the lower part of the sound absorbing material to the surrounding environment, so that a sufficient sound absorbing effect cannot be obtained.

  Accordingly, the present invention provides a truck structure that can sufficiently enhance the soundproofing effect by making it possible to bring the soundproofing member for absorbing the rolling noise of the wheel or reflecting it toward the inside of the vehicle body close to the height position where the wheel is in contact with the rail. The purpose is to provide a railway vehicle equipped.

  In order to achieve the above object, a railway vehicle according to the present invention is a railway vehicle provided with a carriage that rotatably supports both ends of an axle equipped with wheels on an axle box. A holding member and a soundproof member having flexibility attached to the holding member, and the holding member is located on a vehicle body outer side of the wheel in a state where a lower end portion is located above a preset position. The upper part of the holding member is fixed to the axle box, and the soundproofing member is arranged in a direction parallel to the rail on the vehicle body outer side where the wheel rolls on the rail, and the upper part of the soundproofing member is the holding member And the lower end of the soundproofing member is located above the rail surface.

  Furthermore, the soundproof member in the railway vehicle of the present invention is attached to the holding member so that the vertical position can be adjusted. The upper part of the holding member is fixed to any one of the lower surface of the axle box, the lower outer surface of the axle box, the outer surface of the axle holder of the axle box, and the inner surface of the axle holder of the axle box.

  According to the railway vehicle of the present invention, since the soundproof member has flexibility, it becomes possible to arrange the soundproof member at a position lower than the vehicle limit or other set limit, and the position of the soundproof member is It is possible to approach the height position where the wheel contacts the rail. Thereby, the soundproofing effect by the soundproofing member can be improved. Furthermore, by attaching the soundproof member to the holding member so that the vertical position can be adjusted, it is possible to easily cope with a height change during wheel cutting. In addition, the holding member is a shaft box bottom surface, a shaft box outer surface, a shaft box axle holding part outer surface, a axle box axle holding depending on the structure of the axle box and the relationship with other equipment provided in the axle box. Since any one of the inner surfaces of the parts can be selected and fixed, it is possible to deal with various types of axle boxes.

It is a front view of the trolley | bogie which shows the 1st example of a railway vehicle of this invention. It is a front view of the principal part similarly. It is a side view of the principal part similarly. It is a front view of the principal part of the trolley | bogie which shows the 2nd example of a railway vehicle of this invention. It is a side view of the principal part similarly. It is a front view of the principal part of the trolley | bogie which shows the 3rd example of a railway vehicle of this invention. It is a side view of the principal part similarly. It is a front view of the principal part of the trolley | bogie which shows the 4th example of a railway vehicle of this invention. It is a side view of the principal part similarly. It is XX sectional drawing of FIG. It is a front view of the principal part of the trolley | bogie which shows the 5th example of a railway vehicle of this invention. It is a partial cross section side view of the principal part. It is a front view of the principal part of the trolley | bogie which shows the 6th example of a railway vehicle of this invention. It is a partial cross section side view of the principal part.

  First, in the first embodiment of the present invention shown in FIGS. 1 to 3, the bogie 10 of the railway vehicle shown in the present embodiment includes a bogie frame 12 that elastically supports the vehicle body via an air spring 11, and a bogie frame 12. A pair of front and rear wheel shafts 14 are respectively provided on the front and rear sides via a shaft box support device 13. The axle box support device 13 is a so-called wing type, and is provided with wing portions 15a projecting in both the front and rear directions of the axle box 15 that rotatably holds both end portions of the axle 14a of the wheel shaft 14, and each wing portion 15a and cart. A shaft spring 16 formed of a pair of coil springs is provided between the frame 12 and the frame 12. Furthermore, a soundproof member 22 having flexibility is provided on the lower surface of the axle box 15 via a metal holding member 21.

  The holding member 21 in this embodiment includes a fixing plate portion 21a fixed to the lower surface of the axle box 15 by fixing bolts 23, a plurality of support rods 21b provided in the sleeper direction on the lower surface of the fixing plate portion 21a, And an attachment plate portion 21c provided at the outer end of the support rod 21b. The mounting plate portion 21c is made of a metal material disposed on the outer side of the vehicle body of the wheel 14b of the wheel axle 14 with the plate surface facing the rail and in the vertical direction. Bolt insertion holes 24 for attaching soundproof members, which are long holes in the direction, are provided at a plurality of locations. The lowermost end portion of the holding member 21, in this embodiment, the lower edge of the mounting plate portion 21 c is a preset position, for example, a position set as an unsprung part lower limit value, specifically, 60 from the rail surface. The shape and size of the holding member 21 are set so as to be positioned above a position higher by ~ 70 mm.

  The soundproof member 22 is a plate-like member that is disposed in a direction parallel to the rail on the outer side of the vehicle body at the position where the wheel 14b rolls on the rail 17, and not only has flexibility, but also the wheel 14b It is formed of a material that can absorb the rolling noise that rolls, has strength that can withstand running wind, and has excellent weather resistance. As materials, for example, urethane foam, semi-rigid rubber, rubber used for automobile tires, and the like can be used alone or in appropriate combination.

  Moreover, the soundproof member 22 is provided so that the lowermost end of the soundproof member 22 is located 10 to 30 mm above the rail surface, for example, so that the lowermost end is located above the upper surface of the rail 17. The soundproof member 22 is prevented from coming into contact with the rail 17 or the step board when the railway vehicle travels at a place where the rail 17 intersects or a railroad crossing.

  Further, a plurality of mounting through holes 25 corresponding to the bolt insertion holes 24 of the holding member 21 are provided at the upper end portion of the soundproof member 22, and the bolt insertion holes 24 and the mounting through holes 25 are respectively provided. The soundproof member 22 is attached to the holding member 21 by the inserted mounting bolt 26 and the mounting nut 27, and the mounting height of the soundproof member 22, that is, the soundproofing, is changed by changing the insertion position of the mounting bolt 26 into the bolt insertion hole 24. The position of the lowermost end of the member 22 can be adjusted. Thereby, even when the wheel 14b is trimmed and the diameter of the wheel 14b is reduced, the position of the lowermost end of the soundproof member 22 can be easily adjusted to a preset position.

  Thus, by providing the flexible plate-like soundproof member 22 in the direction parallel to the rail 17 on the outer side of the vehicle body at the position where the wheel 14b rolls on the rail 17, the rolling sound of the wheel 14b is generated. It is possible to suppress diffusion to the surrounding environment. In particular, the soundproof member 22 is disposed below the holding member 21 fixed to the axle box 15 that moves up and down together with the wheel 14b, the lower end of the metal holding member 21 is lowered to a preset position, and the holding member 21 is provided. Since the soundproof member 22 having flexibility is suspended from the lower portion of the soundproof member 22, the soundproof member 22 can be securely held and the position of the soundproof member 22 can be lowered to the vicinity of the rail 17. The soundproofing effect by 22 can be improved.

  4 and 5 show a second embodiment of the present invention. In the following description, the same components as those shown in the first embodiment are designated by the same reference numerals, and detailed description thereof is omitted.

  In this embodiment, the upper part of the plate-like holding member 31 is fixed to the lower part of the outer surface of the axle box 15 with fixing bolts 32, and the same soundproof member 22 as in the first embodiment is attached to the lower part of the holding member 31. The attached example is shown. Also in this embodiment, a plurality of bolt insertion holes 24 made of elongated holes that are long in the vertical direction are provided in the lower part of the holding member 31, and the soundproof member 22 includes each bolt insertion hole 24 and each attachment. The mounting bolt 26 and the mounting nut 27 respectively inserted into the through holes 25 are attached to the holding member 31 so that the vertical position can be adjusted.

  6 and 7 show a third embodiment of the present invention. In this embodiment, the upper portion of the holding member 41 is fixed to the outer surface of the axle holding portion 15b of the axle box 15. FIG. The axle holding portion 15b is formed in a cylindrical shape so as to surround the end portion of the axle 14a, and is attached to the upper portion of the holding member 41 in a ring shape corresponding to the outer peripheral portion of the cylindrical end surface of the axle holding portion 15b. A portion 41a is provided, and a mounting plate portion 41b is provided below the holding member 41. The mounting plate portion 41b has a plate surface arranged in the rail direction and the vertical direction in the same manner as the above-described embodiments. A plurality of bolt insertion holes 24 each having a long hole that is long in the vertical direction are provided in the lower part.

  Also in this embodiment, the fixing portion 41a of the holding member 41 is fixed to the outer surface of the axle holding portion 15b by a plurality of fixing bolts 42, and the bolt insertion holes 24 provided in the mounting plate portion 41b and the soundproofing member 22 are fixed. The soundproof member 22 is attached to the lower part of the holding member 41 in a state where the vertical position can be adjusted by the attachment bolts 26 and the attachment nuts 27 respectively inserted into the attachment through holes 25 provided at the upper part.

  8 to 10 show a fourth embodiment of the present invention. In this embodiment, the upper portion of the holding member 51 is fixed to the inner surface of the axle holding portion 15b of the axle box 15. FIG. An upper portion of the holding member 51 is provided with a ring-shaped fixing portion 51b having an axle insertion hole 51a having an inner diameter through which the axle 14a can be inserted. The fixing portion 51b is held by the axle holding portion 15b. Is fixed to the inner surface of the axle holding portion 15b with a plurality of fixing bolts 52 in a state of being inserted into the axle insertion hole 51a.

  In the lower part of the holding member 51, as in each of the above-described embodiments, a mounting plate portion 51c is provided in which the plate surface is disposed in the rail direction and in the vertical direction, and the mounting plate portion 51c has a vertical direction. A plurality of bolt insertion holes 24 made of long long holes are provided. Also in this embodiment, the mounting bolts 26 and the mounting nuts 27 respectively inserted into the respective bolt insertion holes 24 provided in the lower part of the holding member 51 and the respective mounting through holes 25 provided in the upper part of the soundproof member 22. Thus, the soundproof member 22 is attached to the holding member 51 in a state where the vertical position can be adjusted.

  11 and 12 show a fifth embodiment of the present invention. In this embodiment, the holding member 61 is used instead of the adjustment plate inserted between the upper surface of the wing portion 15a and the lower end of the shaft spring 16. Is inserted. That is, as the holding member 61, a pair of horizontal fixing portions 61a in which a rail direction intermediate portion corresponding to the axle holding portion 15b is cut out, and a rail direction bent vertically downward from one side edge of the fixing portion 61a The fixing member 61a is inserted and fixed between the upper surface of the wing portion 15a and the lower end of the shaft spring 16, and the fixing portion 61a is attached to the outer side of the fixing portion 61a. The soundproof member 22 is vertically moved to the lower portion of the holding member 61 by the mounting bolts 26 and the mounting nuts 27 inserted through the respective bolt insertion holes 24 and the respective mounting through holes 25 provided in the mounting plate portion 61b hanging from the end side. It is installed in a state where the position can be adjusted.

  13 and 14 show a sixth embodiment of the present invention. In this embodiment, the insertion direction of the holding member 61 shown in the fifth embodiment is the reverse direction. That is, in the fifth embodiment, the holding member 61 is disposed so that the mounting plate portion 61b is located outside the axle box 15. However, in the present embodiment, the attachment plate portion 61b is located inside the axle box 15. The holding member 61 is arranged so as to be positioned, and the soundproof member 22 and the wheel 14a attached to the attachment plate portion 61b so that the vertical position can be adjusted are brought closer to each other than in the fifth embodiment.

  In this way, by selecting the shape of the holding member that holds the soundproof member 22 according to the structure and shape of the axle box in the railcar carriage, the axle box support type is lower than the axle box like a wing type carriage. It can be applied to a relatively large one, and a shaft box supporting type such as a monolink type or a shaft beam type can also be applied to a relatively small axle box, and by appropriately selecting the mounting position of the holding member, The present invention can also be applied to a cart in which a speed detector and a brake disk are arranged outside the box.

  DESCRIPTION OF SYMBOLS 10 ... Carriage, 11 ... Air spring, 12 ... Carriage frame, 13 ... Shaft box support device, 14 ... Wheel shaft, 14a ... Axle, 14b ... Wheel, 15 ... Shaft box, 15a ... Wing part, 15b ... Axle holding part, 16 ... Axis spring, 17 ... Rail, 21 ... Holding member, 21a ... Fixing plate part, 21b ... Supporting hook, 21c ... Mounting plate part, 22 ... Soundproof member, 23 ... Fixing bolt, 24 ... Bolt insertion hole, 25 ... For mounting Through hole, 26 ... mounting bolt, 27 ... mounting nut, 31 ... holding member, 32 ... fixing bolt, 41 ... holding member, 41a ... fixing portion, 41b ... mounting plate portion, 42 ... fixing bolt, 51 ... holding member, 51a ... Axle insertion hole, 51b ... Fixing part, 51c ... Mounting plate part, 52 ... Fixing bolt, 61 ... Holding member, 61a ... Fixing part, 61b ... Mounting plate part

Claims (6)

  In a railway vehicle provided with a carriage in which both ends of an axle equipped with wheels are rotatably supported by an axle box, a metal holding member fixed to the axle box and a flexibility to be attached to the holding member The holding member is fixed to the axle box with the upper end of the holding member being positioned above the preset position on the outer side of the vehicle body of the wheel. The member is disposed in a direction parallel to the rail on the vehicle body outer side where the wheel rolls on the rail, the upper portion of the soundproof member is attached to the holding member, and the lower end portion of the soundproof member is the rail surface. A rail car located above.   The railway vehicle according to claim 1, wherein the soundproof member is attached to the holding member so that the vertical position can be adjusted.   The railway vehicle according to claim 1, wherein an upper portion of the holding member is fixed to a lower surface of the axle box.   The railway vehicle according to claim 1 or 2, wherein an upper portion of the holding member is fixed to a lower outer surface of the axle box.   The railway vehicle according to claim 1 or 2, wherein an upper portion of the holding member is fixed to an outer surface of an axle holding portion of the axle box.   The railway vehicle according to claim 1, wherein an upper portion of the holding member is fixed to an inner surface of an axle holding portion of the axle box.

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