JP2001315642A - Bolt fastening structure for railway vehicles - Google Patents

Abstract

(57) [Summary] When suspending equipment via a bolt member in a suspension groove provided in an underframe of a railway vehicle, fine adjustment of a screw length of the bolt member is possible. Provided is a bolted structure for a railway vehicle. A suspension groove is provided in an underframe of a railway vehicle, and devices are suspended in the suspension groove via a bolt member. The bolt member 1 is non-rotatably engaged with a head 3a of a bolt 3 manufactured according to Japanese Industrial Standards in an engagement recess 2c of a block-shaped engagement member 2A that is non-rotatably engaged with the suspension groove 103. The male screw 3b is inserted through the through hole 2d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway vehicle bolt fastening structure for suspending equipment via suspension members provided in a frame of a railway vehicle via bolt members.

[0002]

2. Description of the Related Art In a railway vehicle, when suspending underfloor equipment or arranging equipment, a special bolt head is inserted into a suspension groove provided in a horizontal beam of an underframe to make it impossible to rotate. The engagement is performed by using a male screw portion that is suspended downward from the suspension groove. The shape of the head of such a special bolt has a substantially rectangular parallelepiped shape because the head is non-rotatably engaged with the suspension groove.

[0003] More specifically, the body of a vehicle usually includes an underframe,
7 and 8, for example, as shown in FIGS. 7 and 8, a cross beam 102 extending in the left-right direction of the vehicle is provided on the underframe 101, and a suspension groove is provided below the horizontal beam 102. 103 is provided. Then, the head 104 a of the special bolt 104 is inserted into the suspension groove 103, and the support bracket 106 of the equipment 105 is inserted into the male screw portion 104 b hanging down below the special bolt 104.
Are concluded, the devices 105 are suspended.

Here, the underfloor equipment 105 includes, specifically, a buffer air tank, a control air tank, an external power box for electric lights, a high pressure auxiliary grounding switch box, a supply air tank,
There are storage battery box, brake control unit, original air tank unit, emergency air tank, negative current collector junction box, etc.

The hanging groove 103 has a groove 10 having a wide groove width.
3a and the groove 103a having a width smaller than that of the groove 103a.
And an opening 103b for opening the lower part downward, and the head 10 having a shape corresponding to the shape of the suspension groove 103.
The underfloor equipment 10 using the special bolt 104 having the
5 is suspended or outfitted.

[0009] For example, as shown in FIG.
Since the notch 103c for inserting a special bolt wider than 3b is formed, the head 104a of the special bolt 104 is inserted into the suspension groove 103 through the notch 103c. At this time, a special washer 107 having a size corresponding to the head 104a of the special bolt 104 is also inserted. Then, the special bolt 104 is moved to a desired position by moving the head 104 a in the suspension groove 103, and then, the contact 108 is applied to the male screw portion 104 b of the special bolt 104 from below, and And the special washer 107 and the special washer 107 are combined.
Is tightened, the special bolt 104 is fixed at a desired position and positioned.

In this state, the male screw portion 104b of the special bolt 104 having the head portion 104a fixed at a desired position is hung downward through the open portion 103a of the suspension groove 103, so that the male screw portion 104b is used. Then, the underfloor equipment 105 is suspended or the outfitting arrangement is performed.

[0008]

However, such a special bolt 1 having a specially shaped head 104a.
When using No. 04, the shape of the special bolt will be different every time the screw size and the screw length are different, and if all these cases are to be dealt with, the type of special bolt that must be prepared Is very large and its management is also difficult.

Therefore, conventionally, only a specific type of special bolt has been used, and the type of the screw length has been limited, so that at present, it is not possible to finely adjust the screw length.

The inventor divided the special bolt into a head (engaging member) and a male screw (bolt member).
If they are configured to have the same shape as the special bolt by engaging them detachably, if the screw size is the same even if the screw length is different, the size of the bolt head is the same. Therefore, the present invention is based on the idea that the engagement members need only be prepared corresponding to the types of the screw size only.

The present invention provides a railway vehicle capable of finely adjusting the screw length of the bolt member when suspending equipment via a bolt member in a suspension groove provided in an underframe of the railway vehicle. It is intended to provide a bolt fastening structure for a vehicle.

[0012]

In a bolt fastening structure for a railway vehicle according to the present invention, a suspension groove is provided on an underframe of a railway vehicle, and equipment is suspended in the suspension groove via a bolt member. A bolt fastening structure for a railway vehicle, wherein the suspension groove has a wide groove portion, and an opening portion that is narrower than the groove portion and opens the groove portion downward, wherein the bolt member has a head. And a bolt having a male threaded portion connected thereto, an engaging recess in which the head of the bolt is non-rotatably and detachably engaged, and a penetrating hole through which the male threaded portion communicates with the engaging recess. An engaging member having a hole, wherein a head of the bolt engages with an engaging recess of the engaging member in a non-rotatable and disengageable manner, and the male screw portion extends through the engaging member. When the engaging member penetrates through the hole, the engaging member Those engaged non-rotatably in the groove.

According to this structure, the head of the bolt engages with the engaging recess of the engaging member in a non-rotatable and disengageable manner, and the male screw portion of the bolt passes through the through hole of the engaging member. In this state, the engaging member is non-rotatably engaged with the groove of the suspension groove. Therefore, the state of the head of the conventional special bolt is exactly the same as the state of being engaged with the suspension groove. Will be able to lower it. Since the head of the bolt is non-rotatably engaged with the engaging recess of the engaging member, the fastening operation for suspending the devices in the suspension groove using the bolt member is different from the conventional case. Can be done without.

In particular, since the bolt member is configured by engaging the head of the bolt with the engaging recess of the engaging member, when a conventional special bolt is used, the screw size and the screw length are increased. However, according to the present invention, if the screw size is the same even if the screw length is different, a common engagement member can be used. It can be managed by type. That is, if the screw size of the male screw part of the bolt is different, the size of the head of the bolt is also different, but even if the screw length is different, if the screw size is the same, the head of the same size can be used. Since the engagement members can be shared, the engagement members need only be prepared in a type corresponding to the screw size.

In this case, the engaging member is formed so as to be insertable into the suspension groove through an opening of the suspension groove, and a first portion located in the groove portion of the suspension groove, and an opening of the suspension groove is provided. And a second portion that non-rotatably engages the portion.

According to this configuration, the second portion of the bolt is non-rotatably engaged with the open portion of the suspension groove. Therefore, when the screw size is small, the first portion located in the groove portion of the suspension groove. However, it is not necessary to increase the size of the suspension groove so that the suspension groove cannot be rotated during the fastening operation.

Further, the entirety of the engaging member is non-rotatably engaged in the groove of the suspension groove, and the opening of the suspension groove has a size such that the engaging member can be inserted therein. A configuration having a notch can also be used.

With this configuration, the entire engaging member is non-rotatably engaged in the groove of the suspension groove, and thus has the second portion that is non-rotatably engaged with the opening as described above. There is no need for a structure.

Further, as the bolt, a bolt conforming to Japanese Industrial Standard (JIS B 1180) can be used.

In this way, if the conventional special bolt is used, the type of screw length is limited, so that it is not possible to finely adjust the screw length. Since there are many types and versatility, it is possible to cope with a delicate adjustment of the screw length, which is advantageous in reducing costs.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. The present invention also has a bolt fastening structure for a railway vehicle in which a suspension groove is provided in an underframe of a railway vehicle, and devices are suspended in the suspension groove via bolt members. 9 are the same as those in the conventional structure shown in FIG.

FIG. 1 is an exploded perspective view of a bolt member used in a bolt fastening structure for a railway vehicle according to the present invention, and FIG.
FIG. 2 is a plan view of the engaging member according to the present invention, and FIG. 2B is a longitudinal sectional view of the engaging member.

As shown in FIG. 1, the bolt member 1 includes a block-shaped engaging member 2A formed so as to be non-rotatably engaged with the suspension groove 103 and a Japanese Industrial Standard (JIS B 1).
180) and a hexagonal head 3
a and a bolt 3 having a male screw portion 3b. The engaging member 2A corresponds to the head 104a of the conventional special bolt 104 and the male screw 3b of the bolt 3
Correspond to the male screw portion 104b of the conventional special bolt 104.

As shown in detail in FIGS. 2A and 2B, the engaging member 2A can be inserted into the suspension groove 103 through the opening 103b of the suspension groove 103, and can be inserted into the suspension groove 103. It is formed so as to be rotatable. The engaging member 2A includes a lower portion 2a (a second portion) located in the groove portion 103a of the suspension groove 103 and the suspension groove 10a.
Upper portion 2b non-rotatably engaged with the opening 103b
(First portion), and they are integrally formed. The engagement member 2A is mainly used when the screw size is small (for example, M12).

The lower portion 2a of the engaging member 2A has a square horizontal cross section whose one side is substantially equal to the width of the open portion 103b of the suspension groove 103. On the other hand, the engagement member 2A
The upper portion 2b has a rectangular horizontal cross section composed of a short side having a length equal to one side of the lower portion 2a and a long side longer than that. Note that the depth of the suspension groove 103 is larger than the height of the engagement member 2A,
In the groove 103a of the suspension groove 103, the engaging member 2
The whole A is configured to be able to rotate without difficulty.

The upper part 2b of the engagement member 2A
If the long side of the support member coincides with the direction in which the opening 103a of the suspension groove 103 extends, the engaging member 2 can be moved through the opening 103a.
A can be inserted into and engaged with the groove 103a,
Then, after the entire engaging member 2A is rotated by 90 degrees in the groove 103a, the lower portion 2a is fitted into the opening 103b, so that the engaging member 2A is non-rotatably engaged with the suspension groove 103. Become.

An engagement recess 2c having a size corresponding to the head 3a of the bolt 3 and having a hexagonal cross section is formed substantially at the center of the upper portion 2b. Further, a through hole 2d communicating with the engaging recess 2c is formed in the lower portion 2a, and the head 3a of the bolt 3 is engaged with the engaging recess 2c in a disengageable and non-rotatable manner. The male screw portion 3b is inserted into the through hole 2d, and the head 3 of the bolt 3
a is non-rotatably and disengageably engaged with the engagement recess 2a of the engagement member 2A, and the male screw portion 3b is engaged with the engagement member 2A.
In the state penetrated through the through hole 2d of A, as shown in FIG. 3, it has the same shape as the conventional special bolt, exhibits the same function, and can hang equipment.

The bolt 3 is made of Japanese Industrial Standard (JIS)
B1180), and commercially available products manufactured in various types according to the shape and size of the head 3a and the size and length of the male screw portion 3b are used.

Next, a procedure for suspending equipment, for example, equipment under the floor, will be described specifically.

First, the screw size and the screw length of the bolt member 1 used for suspending the underfloor equipment are determined in consideration of the weight of the underfloor equipment. While selecting a bolt conforming to Japanese Industrial Standards corresponding to the screw size and screw length of the bolt 3 used for the bolt member 1, selecting an engaging member 2A for engaging the head 3a of the bolt 3, the engaging member The head 3a of the bolt 3 is removably engaged with the engaging recess 2c of 2A, and has the same form as the conventional special bolt. Here, the engaging member 2A is a bolt 3 according to Japanese Industrial Standards.
At the same time, it is prepared in advance according to the type of the screw size.

Then, the head 3a of the bolt 3 is removably engaged with the engaging recess 2c of the engaging member 2A, and the male screw 3b is projected downward through the through hole 2d.
And in the same manner as the procedure shown in FIG.
The attachment to the suspension groove 103 is performed. At this time, if you want to change the screw length of the bolt member 1,
By removing the (engaging member 2A and the bolt 3), selecting a bolt 3 having a desired screw length from among the bolts 3 conforming to Japanese Industrial Standards, and replacing the bolt 3, it can be easily handled. Fine adjustment of the screw length, which has been difficult, can be easily performed.

In particular, since the bolts 3 which are versatile and conform to Japanese Industrial Standards are used as the bolts, the types of screw lengths are abundant, and fine adjustment of the length can be easily and easily realized.

Incidentally, in the engagement member 2A shown in FIG. 2, the engagement recess 2c has a hexagonal cross section in which the entire circumference is surrounded. However, the head 3a of the bolt 3 is engaged and the rotation is prevented. Since it is sufficient if the shape is such that the shape cannot be used, a shape in which a part 2f around the engagement concave portion 2e is opened like the engagement member 2B shown in FIG.

When the thread size of the male screw portion 3b of the bolt 3 is large (for example, M20), the head 3a of the bolt 3 becomes large, so that the engaging members 2A and 2B are also attached to the head 3a of the bolt 3. Because of the formation of the engagement concave portion for engaging with the above, since the size is larger than that described above, the engagement concave portion 103 is engaged with the suspension groove 103 like the engagement members 2A and 2B shown in FIGS. In order to prevent the rotation of the engagement members 2A and 2B, it is not necessary to provide the lower portion 2a for preventing rotation.

That is, as shown in FIG.
C has a shape (size) corresponding to the groove portion 103a of the suspension groove 103, that is, a rectangular horizontal cross-section that non-rotatably engages with the suspension groove 103. An engaging recess 2g having a hexagonal cross section having a size corresponding to 3a is formed with a through hole 2h communicating with the engaging recess 2g at a lower portion, and a bolt 3 is formed in the engaging recess 2g as described above. When the head 3a is engaged so as to be disengageable and non-rotatable, the male screw portion 3b is inserted into the through hole 2h.

Also in this case, as shown in FIG.
In the state where the head portion 3a of the second member 2 is non-rotatably and removably engaged with the engagement recess 2g of the engagement member 2C, and the male screw portion 2h passes through the through hole 2h of the engagement member 2C, It has the same shape as the special bolt 104, exhibits the same function, and can hang the underfloor equipment 105. Here, the notch 103c formed in the open portion 103b of the suspension groove 103 has a size that allows the engagement member 2C to be inserted, and the engaging member 2C is inserted through the notch 103c.
C is inserted into the groove 103a of the suspension groove 103.

In the above embodiment, an example in which the suspension groove 103 is formed below the cross beam 102 provided below the underframe 101 has been described, but the present invention is not limited to this. However, it goes without saying that the present invention can be similarly applied to a case in which, for example, a suspension groove is directly formed in an underframe.

Further, in the above-described embodiment, a structure (see FIG. 9) which does not use a special washer and a positioning bolt for the special bolt 104 has been described. However, similar to the conventional structure shown in FIG. It goes without saying that special washers and special bolts for positioning the special bolts can be used.

[0039]

The present invention is embodied as described above, and has the following effects.

In the bolt fastening structure for a railway vehicle according to the present invention, a bolt member used for suspending equipment in a suspension groove is formed by engaging a head of the bolt with an engagement recess of the engagement member. As a result, fine adjustment of the screw length can be realized by replacing the bolt.
Further, even if the screw lengths are different, if the screw size is the same, a common engaging member can be used, so that the cost can be reduced, and the bolt member (the engaging member,
Bolts) are also easy to manage.

In a state where the head of the bolt is engaged with the engaging recess of the engaging member in a non-rotatable and disengageable manner, and the male screw portion passes through the through hole of the engaging member, Since the member is non-rotatably engaged with the groove portion of the suspension groove, it is in a state similar to the state where the conventional special bolt is engaged with the suspension groove. Can be hung in the hanging groove as in the conventional case.

In this case, the engaging member has a first portion located in the groove of the suspension groove, and a second portion non-rotatably engaged with the open portion of the suspension groove. For example, the second portion of the bolt is non-rotatably engaged with the open portion of the suspension groove, so that rotation of the engaging member during the fastening operation can be restricted regardless of the size of the screw.

On the other hand, the engaging member is adapted to be non-rotatably engaged with the groove of the suspension groove, and the opening of the suspension groove is formed with a notch having a size capable of inserting the engaging member. Since the engaging member itself non-rotatably engages with the groove portion of the suspension groove, the second portion in which the engaging member non-rotatably engages with the opening portion as described above. Need not be provided.

Furthermore, if bolts complying with the Japanese Industrial Standards are used as the bolts, the bolts conforming to the Japanese Industrial Standards are abundant and versatile, so that it is possible to cope with fine adjustment of the screw length. become able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a bolt member used in a bolt fastening structure for a railway vehicle according to the present invention.

FIG. 2A is a plan view of an engagement member according to the present invention, and FIG. 2B is a longitudinal sectional view of the engagement member.

FIG. 3 is a sectional view showing a state in which a bolt member used in the bolt fastening structure for a railway vehicle according to the present invention is engaged with a suspension groove.

FIG. 4A is a plan view of an engagement member according to another embodiment, and FIG. 4B is a longitudinal sectional view of the same.

FIG. 5A is a plan view of an engaging member according to another embodiment, and FIG. 5B is a longitudinal sectional view of the same.

FIG. 6 is a view similar to FIG. 3 for another embodiment.

FIG. 7 is an explanatory view showing a conventional bolt fastening structure for a railway vehicle.

FIG. 8 is a perspective view showing a state where a conventional special bolt is engaged with a suspension groove.

FIG. 9 is an explanatory view showing an attachment procedure in a conventional structure.

[Explanation of symbols]

 Reference Signs List 1 bolt member 2A engaging member 2B engaging member 2C engaging member 2a lower part (second part) 2b upper part (first part) 2c engaging concave part 2d through hole 2e engaging concave part 2g engaging concave part 2h Through-hole 3 Bolt 3a Head 3b Male thread 101 Underframe 102 Cross beam 103 Hanging groove 103a Groove 103b Opening 103c Notch 105 Underfloor equipment

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16B 35/00 F16B 35/00 H 35/04 35/04 JX (72) Inventor Kiyomori Nakano Kobe, Hyogo Prefecture 2-1-1-18 Wadayama-dori, Hyogo-ku, Kawasaki F-term in Kawasaki Heavy Industries, Ltd. Hyogo Factory (reference) 3J001 FA07 GB01 HA08 JA10 KA14 KA18

Claims (4)

[Claims] 1. A bolt fastening structure for a railway vehicle in which a suspension groove is provided in an underframe of a railway vehicle, and equipment is suspended in the suspension groove via a bolt member. A groove having a wide width, and an opening having a width smaller than the groove and opening the groove downward, wherein the bolt member includes a head and a bolt having a male screw portion connected thereto, and the bolt An engaging member having a through hole in which the head is non-rotatably and detachably engaged and a through hole communicating with the engaging concave portion and through which the male screw portion passes. In a state where the head is non-rotatably and disengageably engaged with the engaging concave portion of the engaging member, and the male screw portion penetrates through the through hole of the engaging member, the engaging member is connected to the suspension groove. A railway vehicle, which is non-rotatably engaged with a groove of the vehicle. Bolt fastening structure. 2. The hanging member is formed so as to be insertable into the hanging groove through an opening of the hanging groove, a first portion located in the groove of the hanging groove, and an opening of the hanging groove. The bolt fastening structure for a railway vehicle according to claim 1, further comprising a second portion that non-rotatably engages with the second portion. 3. The entirety of the engaging member is non-rotatably engaged within the groove of the suspension groove, and the opening of the suspension groove has a size such that the engaging member can be inserted. The bolt fastening structure for a railway vehicle according to claim 1, wherein the bolt fastening structure has a notch. 4. The bolt fastening structure for a railway vehicle according to claim 1, wherein the bolt is a bolt conforming to Japanese Industrial Standards.