JP5572132B2 - Suspension rail for railway vehicles - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a railcar suspension rail for attaching members such as wiring, piping, equipment, and devices to an underfloor of a railcar via suspension bolts.

  A suspension rail having a T-shaped cross section groove (hereinafter referred to as a “T-shaped groove”) is formed at the bottom of the underframe when a member such as a wiring, piping, equipment, or device is disposed under the floor of the vehicle. A structure is used in which a member is attached using a suspension bolt that is disposed in a downward direction and is inserted into a T-shaped groove and fixed to a suspension rail (see, for example, Patent Documents 1 and 2).

  In FIG. 6, the longitudinal cross-section of the suspension rail currently disclosed by patent document 1 is shown. The head 2c and the corner root 2b of the suspension bolt 2 are inserted into the opening 1b of the equipment suspension rail 1 that is a suspension rail. In FIG. 6, the suspension bolt 2 is inserted from one of the openings 1 b at both ends of the equipment suspension rail 1 shown on the left and right, and the head 2 c and the square root 2 b are connected to the T-shaped groove of the equipment suspension rail 1. 1a.

  The suspension bolt 2 is pulled back to the insertion side while rotating 90 degrees, the square root portion 2b is fitted into the opening 1b, and the head portion 2c is supported on the inner surfaces of the lip portions 1c and 1c of the equipment suspension rail 1. . A retainer 3 for preventing push-in is mounted from the side surface of the suspension bolt 2, and a push-in preventing piece 3 b of the retainer 3 is arranged between the head 2 c of the suspension bolt 2 and the inner surface 1 d of the T-shaped groove 1 a of the device suspension rail 1. The gap C1 between the head 2c and the inner surface 1d of the T-shaped groove 1a is filled with a push-in preventing piece 3b so that the corner root 2b does not come out of the opening 1b.

  Thus, in the equipment suspension rail 1, when the suspension bolt 2 is assembled, the square root portion 2b is once deeply accommodated in the T-shaped groove 1a of the equipment suspension rail 1 and rotated 90 degrees, and then the suspension bolt 2 is pulled back. The corner portion 2b is engaged between the lip portions 1c and 1c. In this way, the suspension bolt 2 is used as the bolt of the equipment by the gap C1 generated between the head 2c of the suspension bolt 2 and the inner surface 1d of the T-shaped groove 1a facing the head 2c of the suspension bolt 2 by the amount of pullback. The suspension bolt 2 is pushed into the T-shaped groove 1a together with the nut so that the suspension bolt 2 is not pushed in when being inserted into a hole (not shown), especially when tightening the nut with an electric tool or the like. As a result, the square root 2b of the suspension bolt 2 slips into the T-shaped groove 1a from between the lip portions 1c and 1c, and there is no anti-rotation effect, and the suspension bolt 2 rotates together with the nut, making it difficult to install the equipment. Is prevented.

  In FIG. 7, the longitudinal cross-section of the suspension rail currently disclosed by patent document 2 is shown. The horizontal portions of the L-shaped member formed by the vertical portion 21 projecting downward from the face plate 12b of the hollow extruded shape member 11 and the horizontal portion 22 projecting in parallel to the face plate 12b from the tip of the vertical portion 21 face each other. A fastening rail 20 that is a suspension rail is provided integrally with the face plate 12b. Note that a locking groove 25 is formed by the face plate 12 b, the vertical portion 21, and the horizontal portion 22.

  Then, the head of the bolt 31 (not shown) is inserted into the locking groove 25 horizontally from the side (in FIG. 7, from the front to the back). The device 35 is installed on the lower surface of the horizontal portion 22 with the head of the bolt 31 placed on the upper surface of the horizontal portion 22 of the locking groove 25. In the horizontal portion 22, the surface facing the face plate 12 b is farther away from the face plate 12 b as it goes from the portion joined to the vertical portion 21 to the tip. Thereby, when the mass of an apparatus acts on a horizontal part, a horizontal part will be in an initial state, and the intensity | strength of the rail 20 for fastening can be improved.

JP-A-8-277826 Japanese Patent Laid-Open No. 11-321637

  As described above, Patent Document 1 proposes a suspension rail (equipment suspension rail) in which a suspension bolt can be easily attached. Patent Document 2 proposes a suspension rail (fastening rail) with improved strength so that it can withstand the weight of the suspended equipment. However, all of these suspension rails need to be manually inserted into the suspension rails from the suspension bolts or from the openings provided at both ends of the suspension rails.

  Therefore, if the suspension rail is long and there are many positions to lock (the number of bolts), a large number of bolts can be installed from either or both of the openings (entrances to the locking grooves) at both ends of the suspension rail. Inserting and locking at a predetermined locking position is a cumbersome operation. When bolts are inserted / locked before the suspension rail is attached to the vehicle, the work is carried out while supporting the long and heavy suspension rail, resulting in a load on the worker, and consequently a reduction in work efficiency and an increase in work man-hours. . In addition, when bolts are inserted / locked after the suspension rail is attached to the vehicle, the process and work sequence are restricted so that the opening of the suspension rail is not blocked at least until the bolt is completely inserted. There is a need to. After all, problems such as a reduction in work efficiency and an increase in work man-hours are caused.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a suspension rail that can easily insert, lock, and replace a suspension bolt.

In order to solve the above problems, the present invention is a railcar suspension rail that is attached to a railway vehicle structure and is used to suspend a member via a suspension bolt,
An upper portion attached to the structure extending in a first direction by a first predetermined length;
The head is stowed and held while the shaft of the suspension bolt is exposed and suspended in a second direction substantially perpendicular to the first direction, and extends in a first predetermined length in the first direction. With a lower part,
The upper part includes a plate-like assembly part attached to the structure,
In the lower part,
A first groove extending in the first direction for accommodating the head of the suspension bolt therein;
A surface parallel to the plane defined by the first direction is provided with a second groove extending in the first direction substantially concentrically with the first groove exposing the shaft of the suspension bolt. ,
An opening through which the suspension bolt can pass is provided so as to communicate with the first groove and straddle the upper part and the lower part .

  The present invention has an effect of efficiently suspending a device in a railway vehicle.

It is a figure which shows a mode that the suspension rail which concerns on embodiment of this invention is arrange | positioned at the frame of a rail vehicle. It is a figure which shows the side surface and cross section of the suspension rail which concern on Embodiment 1 of this invention. It is the figure which looked at the suspension rail shown in FIG. 2 from the bottom face. It is a figure which shows the side surface and cross section of the suspension rail which concern on Embodiment 2 of this invention. It is the figure which looked at the suspension rail shown in FIG. 4 from the bottom face. It is sectional drawing of the conventional suspension rail. It is sectional drawing of the conventional suspension rail different from the suspension rail shown in FIG.

  The technical features of the present invention will be briefly described below before describing embodiments of the present invention in detail. In the suspension rail, the insertion direction of the suspension bolt is set to a direction substantially perpendicular to the extending direction of the suspension rail, thereby improving the freedom of insertion and locking of the suspension bolt. Specifically, in the suspension rail, an opening used for inserting the suspension bolt is provided so as to extend on a plane substantially orthogonal to the direction in which the suspension bolt is suspended. Hereinafter, embodiments of the present invention will be specifically described.

(Embodiment 1)
Hereinafter, the suspension rail according to the first embodiment of the present invention will be described with reference to FIG. 1, FIG. 2, and FIG. FIG. 1A shows a railcar (hereinafter referred to as “vehicle”) Vr in which the suspension rail according to the present embodiment is disposed on the underframe part of the underfloor as a part of the horizontal tension as viewed from above. Indicates the state. FIG. 1B shows a state in which the frame portion of the vehicle Vr shown in FIG. A plurality of suspension rails RS1 are disposed on the underframe portion of the vehicle Vr so as to extend a predetermined length Lr (FIG. 2A) in the vehicle width direction Dw direction of the vehicle Vr.

  FIG. 2A shows the suspension rail RS1 viewed from the longitudinal direction Da of the vehicle Vr in FIG. FIG.2 (b) has shown the cross section of suspension rail RS1 cut by straight line IIb-IIb in Fig.2 (a). As shown in FIG. 2A, the suspension rail RS1 is a suspension bolt (not shown) used for joining an upper Pu attached to a member such as a vehicle frame and a member (not shown) such as a device. A lower part Pl for storing and holding the head is integrally formed. A bolt head insertion hole Obh extends a predetermined length Lh in the vehicle width direction Dw direction at the bottom portion (attachment portion Pb) of the lower portion Pl.

  As shown in FIG. 2B, the suspension rail RS1 has a symmetric cross-sectional shape with respect to the center line Lc. The upper Pu has a predetermined thickness T1, and has a flat plate-like assembly portion Pt extending in the width direction (the longitudinal direction Da of the vehicle in the example shown in FIG. 1) by a predetermined length Wrt. . The column portion Ps has a predetermined length H1 in the downward direction from the center of the lower surface of the assembly portion Pt, that is, the direction in which the suspension bolt is suspended (hereinafter referred to as the “suspension direction”, the vehicle height direction Dv in the example shown in FIG. 1). And it extends integrally. The assembly portion Pt and the support column portion Ps form a T-shaped cross section. Downward after extending a predetermined length H2 from the lower end of the column Ps so that the legs Pf are separated from each other (in the example shown in FIG. 1, in the longitudinal direction Da) with a predetermined angle θ. (In the example shown in FIG. 1, the vehicle height direction Dv) extends in parallel to each other by a predetermined length H3.

  A flat plate-like mounting portion Pb having a predetermined thickness T1 is provided from the lower end of the foot portion Pf in parallel with the assembly portion Pt (longitudinal direction Da in FIG. 2B) from the center line Lc toward the outside. While extending to the position of the length Wrb / 2, it extends from the center line Lc to the position of the predetermined length Ws / 2 toward the inside. A portion of the attachment portion Pb extending from the center line Lc to a foot portion Pf from a position having a predetermined length Ws / 2 is referred to as a bolt head seat portion Sbh. The bolt head seat portion Sbh extends along a direction substantially orthogonal to the suspension direction. That is, the bolt shaft guide groove Gbs having a width of Ws is opened in the attachment portion Pb of the suspension rail RS1 over the entire length Lr of the suspension rail RS1. The bolt head insertion hole Obh shares the center line Lc with the bolt shaft guide groove Gbs.

  In FIG. 3, the state which looked at suspension rail RS1 from the attachment part Pb side to the assembly | attachment part Pt side is shown. As described above, the attachment portion Pb of the suspension rail RS1 has two openings extending in the longitudinal direction (vehicle width direction Dw) with respect to the center line Lc, that is, the bolt shaft guide groove Gbs and the bolt head insertion hole Obh. And are provided. The bolt shaft guide groove Gbs extends in the vehicle width direction Dw with an opening having a width Wh that is larger than the diameter of the bolt shaft and smaller than the minimum width of the bolt head. The contour shape defined by the width Wg and the length Lh of the bolt head insertion hole Obh is larger than the contour shape of the head of the suspension bolt, and is preferably similar. A bolt head guide groove Gbh having a width Wg is provided over the entire length Lr of the suspension rail RS1 in a portion where the bolt head insertion hole Obh is not provided in the attachment portion Pb.

  The suspension bolts are attached to the suspension rail RS1 in the following procedure. That is, the suspension bolt is inserted toward the assembly portion Pt from the lower surface of the attachment portion Pb so as to pass through the bolt head insertion hole Obh from the bolt head. Then, when the bolt head gets over the bolt head seat portion Sbh, the suspension bolt is moved in the longitudinal direction of the suspension rail RS1 (vehicle width direction Dw in FIG. 3). Thereby, while the bolt head is guided by the bolt head guide groove Gbh and the bolt shaft portion is guided by the bolt shaft guide groove Gbs, the suspension bolt is pulled out from the bolt head insertion hole Obh, and the bottom surface of the bolt head eventually becomes It is received on the upper surface of the head seat Sbh. In this state, the suspension bolt can be fixed to the suspension rail RS1 by means of a nut or the like at an arbitrary position inside the lower portion Pl in the suspension rail RS1.

  That is, in the suspension rail RS1, suspension bolts can be inserted from the lower surface together with the openings at both ends of the suspension rail. Therefore, the degree of freedom of insertion and locking of the suspension bolt is increased, and the suspension bolt can be easily replaced. Further, the suspension rail RS1 is configured such that a flat plate-like assembly portion Pt and a mounting portion Pb are connected in parallel and integrally with each other by a flat plate-like column portion Ps and a bifurcated foot portion Pf. . Therefore, it has sufficient structural strength even when the device is suspended. Moreover, there exists an advantage which can ensure structural intensity | strength, such as a base frame of a vehicle, by using for the horizontal tension of a vehicle.

  As described above, in the suspension rail RS1, the suspension bolt is inserted from the bolt head insertion hole Obh provided in the attachment portion Pb. Since the contour shape of the bolt head insertion hole Obh is larger than the contour shape of the bolt head, the inserted suspension bolt is moved to a position away from the bolt head insertion hole Obh and fixed.

  Further, depending on the size, shape, or number of devices to be suspended, it is easy to suspend by dispersing at a plurality of locations (a plurality of suspension bolts) of one suspension rail RS1. From this point of view, it is preferable to provide bolt head insertion holes Obh at a plurality of locations on the suspension rail RS1 from the viewpoint of improving the efficiency of inserting the suspension bolts. Furthermore, by forming a large number of bolt head insertion holes Obh within the range permitted by the fixing position of the suspension bolt and the required structural strength of the suspension rail, it is possible to contribute to the weight reduction of the suspension rail RS1 and the vehicle Vr.

  As described above, in the suspension rail RS1 according to the present embodiment, the suspension bolt can be inserted from the lower surface in addition to the openings at both ends of the suspension rail, and the freedom of insertion and locking of the suspension bolt is increased. Furthermore, the suspension rail RS1 and thus the vehicle Vr can be reduced in weight.

(Embodiment 2)
Below, with reference to FIG.4 and FIG.5, the suspension rail which concerns on Embodiment 2 of this invention is demonstrated. The suspension rail according to the present embodiment is basically configured in the same manner as the suspension rail RS1 according to the first embodiment described above, except for the configuration related to insertion of the suspension bolt. Therefore, the features unique to the suspension rail RS2 according to the present embodiment will be described with emphasis. 4A, FIG. 4B, and FIG. 5 correspond to FIG. 2A, FIG. 2B, and FIG. 3, respectively. FIG. 4B shows a cross section of the suspension rail RS2 cut along the line IVb-IVb in FIG. 4A. The suspension rail RS1 and the suspension rail RS2 are collectively referred to as the suspension rail RS.

  Before specifically describing the suspension rail RS2 according to the second embodiment, a technical difference from the suspension rail RS1 according to the first embodiment will be briefly described. As described above, in the suspension rail RS1, the contour shape of the bolt head insertion hole Obh for inserting the suspension bolt is larger than the contour shape of the bolt head. Therefore, the inserted suspension bolt is moved and fixed to a position away from the bolt head insertion hole Obh. That is, the bolt head insertion hole Obh must be provided avoiding the fixing position of the suspension bolt and the vicinity thereof, and there is a limitation that it cannot be provided at an arbitrary position. The purpose of the suspension rail RS2 is to eliminate the position restriction of the bolt head insertion hole due to the fixing position of the suspension bolt.

  Specifically, as shown in FIGS. 4 (a) and 4 (b), in the suspension rail RS2, a bolt is used instead of the bolt head insertion hole Obh provided in the attachment portion Pb in the suspension rail RS1. An insertion opening Ob is provided across the upper Pu and the lower Pl. In the suspension rail RS2, the upper Pu, the lower Pl, the support column Ps, and the foot Pf of the portion where the bolt insertion opening Ob is provided are respectively connected to the upper Pu ′, the lower Pl ′, the support column Ps ′, and the foot Pf. It is referred to as' and identified as a portion where the bolt insertion opening Ob is not provided. Similarly, the attachment portion Pb in which the bolt head insertion hole Obh is not provided is referred to as an attachment portion Pb ′.

  As shown in FIG. 4 (a), the bolt insertion opening Ob is provided with a circular contour having a diameter D at the support column Ps and the foot Pf of the suspension rail RS2. As shown in FIG. 4B, the bolt insertion opening Ob opens from the inclined portion at the upper part of the parallel portion of the foot portion Pf ′ to the column portion Ps ′. The diameter D is set larger than the outer diameter size of the head of the suspension bolt.

  FIG. 5 shows a state in which the suspension rail RS2 is viewed from the attachment portion Pb ′ side to the assembly portion Pt side. As described above, the mounting portion Pb 'is not provided with the bolt head insertion hole Obh, and only the bolt shaft guide groove Gbs is provided. In addition, the bolt insertion opening Ob provided in the support | pillar part Ps '(upper Pu') and the foot | leg part Pf '(lower Pl') is visible from between the bolt shaft guide grooves Gbs.

  The attachment of the suspension bolt to the suspension rail RS2 is performed according to the procedure described below. That is, the suspension bolt is inserted toward the attachment portion Pb 'from the side of the support column Ps' so as to pass through the bolt insertion port Ob from the bolt shaft. The insertion is completed when the bolt shaft passes through the bolt shaft guide groove Gbs and the bolt head reaches the bolt head seat Sbh. In this state, the suspension bolt can be fixed to the suspension rail RS2 by means of a nut or the like at an arbitrary position inside the lower portion Pl 'in the suspension rail RS2.

  That is, the device can be suspended by the suspension bolt fixed at an arbitrary position of the attachment portion Pb (Pb ′). Thereby, depending on the magnitude | size, the shape, or the number of the apparatus to suspend, it can be suspended by arbitrary several places (several suspending bolts) of one suspension rail RS2. From the standpoint of improving the efficiency of inserting the suspension bolts, the bolt insertion openings Ob are provided at a plurality of arbitrary positions on the suspension rail RS2 as long as there is no problem in strength of the suspension rail RS2 by opening the bolt insertion opening Ob. be able to. In addition, for standardization of the work and the suspension rail RS2, since a predetermined number of suspension rails RS2 can be provided at a predetermined pitch, the mounting position of the device (fixing position of the suspension bolt) depends on the vehicle or the device. Even if it is different, it can respond flexibly.

  Also, in order to reduce the work load of the suspension bolts inserted on site, a predetermined number of suspension bolts are inserted in advance into the suspension rail RS2, and the openings at both ends of the suspension rail RS2 are also transported to the work site. All you have to do is take measures against dropping out. That is, unless the suspension rail RS2 is turned upside down and swung left and right during transportation, the suspension bolt does not fall off from the bolt insertion opening Ob. Therefore, even when there is a change in the required number or type of suspension bolts later, additional insertion and removal of suspension bolts are easy through the bolt insertion opening Ob.

  Further, when a plurality of bolt insertion openings Ob are provided in one suspension rail RS2, they can be provided at any position and at any pitch as long as the continuity and strength of the upper Pu 'and the lower Pl' are not impaired. Therefore, it is necessary to take out the suspension bolt from the suspension rail RS2 due to damage of the suspension bolt, replacement of the suspended device, change or the like while the vehicle with the device suspended on the vehicle is running through the suspension rail RS2. Even in the case of occurrence, it can be easily replaced through the nearest bolt insertion port Ob.

  As described above, in the suspension rail RS2 according to the present embodiment, the suspension bolt can be inserted from above the bolt head seat portion Sbh through the bolt insertion port Ob of the suspension rail. The suspension bolt can be inserted regardless of its fixing position, and the suspension bolt can be easily replaced.

  In the present embodiment, an example in which the suspension rail RS is disposed in the vehicle width direction Dw direction of the vehicle as a part of the horizontal shear of the underframe of the vehicle is shown. However, the suspension rail RS is disposed in the longitudinal direction Da of the vehicle. You may do it. Furthermore, it can be used in places where equipment, piping, wiring, etc. need to be suspended, such as under the floor or ceilings other than underframes. Moreover, in this Embodiment, although the extension surface (attachment surface) of the assembly | attachment part Pt showed the example substantially parallel to the extension surface (suspension surface) of attachment part Pb and Pb ', Not limited. That is, when the assembly portion Pt is attached to the vehicle, the extending surfaces (suspension surfaces) of the attachment portions Pb and Pb ′ may be substantially parallel to both the traveling direction Da and the vehicle width direction Dw. The mounting surface of the assembly part Pt may form an arbitrary angle with respect to the column parts Ps and Ps ′ on the premise that this condition is satisfied and the suspension load can be withstood.

  The suspension rail RS is preferably formed by extruding aluminum alloy or stainless steel. The attachment of the suspension rail RS to the vehicle is preferably performed by welding the assembly portion Pt to the vehicle. In this case, the material of the suspension rail RS (assembly part Pt) is preferably the same type as the welding partner.

  INDUSTRIAL APPLICABILITY The present invention can be used for suspending equipment, piping, and wiring to railway vehicles.

Vr Railway vehicle Da Vehicle longitudinal direction Dv Vehicle height direction Dw Vehicle width direction RS, RS1, RS2 Suspension rail Pu, Pu 'Upper part of suspension rail Pt Assembly part Ps, Ps' Post part Pl, Pl' Lower part of suspension rail Pf , Pf ′ Foot Pb, Pb ′ Mounting portion Sbh Bolt head seat portion Obh Bolt head insertion hole Gbh Bolt head guide groove Gbs Bolt shaft guide groove Ob Bolt insertion port

Claims (2)

A railcar suspension rail that is attached to a railcar structure and is used to suspend members via suspension bolts.
An upper portion attached to the structure extending in a first direction by a first predetermined length;
The head is stowed and held while the shaft of the suspension bolt is exposed and suspended in a second direction substantially perpendicular to the first direction, and extends in a first predetermined length in the first direction. With a lower part,
The upper part includes a plate-like assembly part attached to the structure,
In the lower part,
A first groove extending in the first direction for accommodating the head of the suspension bolt therein;
A surface parallel to the plane defined by the first direction is provided with a second groove extending in the first direction substantially concentrically with the first groove exposing the shaft of the suspension bolt. ,
The suspension rail for a railway vehicle, wherein an opening through which the suspension bolt can pass is provided to communicate with the first groove and straddle the upper portion and the lower portion . The suspension rail for a railway vehicle according to claim 1 , wherein a contour of the opening viewed from a third direction perpendicular to the first direction is substantially circular.