JP2002234438A - Vertical pin structure for connecting device in rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical pin structure allowing easy removal of a vertical pin from a pin hole when the pin removably connects a coupler and a buffer installed to a car frame together in a connecting device for a rolling stock. SOLUTION: In a pin body 30 constituting a main body part of the vertical pin P, a taper face 31 is formed in the upper face outer circumferential edge, a dead-end internal thread hole 32 along the axial is formed in the lower face center part, and an annular groove 33 is formed in the lower outer circumferential face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pin structure for connecting a rear end of a connector and a front portion of a shock absorber attached to a vehicle frame in a connecting device for a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, in a connecting device for a railway vehicle, a shock absorber adapted to each of the connecting devices is provided alongside the connecting device, which is generated when the vehicles are connected to each other or when the train starts, accelerates, decelerates, or stops. It absorbs positive and negative acceleration to prevent damage and malfunctions due to impact, and keeps the ride comfortable (see Book "Rolling Stock Mechanism Book", published by Kazuo Ihara, Grand Prix Co., Ltd.).

[0003]

The vertical pins connecting the coupler and the shock absorber are required to be periodically replaced together with the shock absorber. Pull out the vertical pin downward from the pin hole,
Also, a new vertical pin is manually inserted into the pin hole from under the vehicle.

[0004] However, in the above replacement work, especially in the work of removing the vertical pin, the vertical pin is not used in the pin hole due to deterioration of lubricating oil, adhesion of dust, generation of rust, etc. due to use for a predetermined period. Due to the firmness (stickiness), the extraction work is a troublesome and troublesome work, and there is a problem that the replacement cost increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a vertical pin structure of a connecting device for a new railway vehicle, in which the operation of inserting and removing the vertical pin is greatly simplified to solve the above-mentioned problem. The purpose is to provide.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a connecting device and a shock absorber attached to a vehicle frame are inserted and connected so that they can be freely removed from below. The pin body is constituted by a solid cylindrical body, a tapered surface is formed on the outer peripheral edge of the upper surface of the pin body over the entire periphery thereof, and a central portion of the lower surface of the pin body is formed. Has a dead end female screw hole along which the male screw shaft of the removal jig can be removably screwed, and a retaining member on the lower outer peripheral surface of the pin body is detachable. It is characterized in that an annular groove to be engaged is formed. According to such a feature, the vertical pin has a dead end female screw hole along its axial direction on its lower surface, so that the vertical pin Sampling with a sampling jig It can be carried out easily easily.
Further, by forming a tapered surface on the outer peripheral edge of the upper surface of the vertical pin, the insertion work into the vertical pin hole becomes easy, and further, it is possible to easily guide the lubricating oil evenly to the outer peripheral surface of the vertical pin. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to one embodiment of the present invention shown in FIGS.

First, the structure of the connecting device will be described with reference to FIGS.

FIG. 1 is a partially cutaway plan view of a connecting device provided with the vertical pin structure of the present invention, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. Sectional view along line 3, FIG. 4
1 is a sectional view taken along line 4-4 in FIG. 1, and FIG.
FIG. 6 is a cross-sectional view taken along line 5 and FIG.

1 and 2, the railway vehicle connecting device includes a connecting device C, a shock absorber D, and a frame joint J for connecting the connecting devices C and D freely.

A rod-shaped coupler C having a coupling portion 1 with a coupling of another vehicle at the front end has a bifurcated frame coupling portion 2 formed at a rear end thereof. 2 is provided with a horizontal pin hole 3 having a horizontal axis.

The shock absorber D is a rubber shock absorber, and is provided between the left and right center beams 4 and 4 of the vehicle frame F. The frame 5 of the shock absorber D is accommodated between the left and right middle beams 4 and 4,
An upper frame support 6 welded and fixed to the upper portions of the left and right center beams 4 and 4 and a lower frame support 7 removably fixed to the lower portion by bolts 8 and nuts 9 are vertically supported. A pair of left and right guards 10 fixed to the beams 4 and 4, respectively;
11 supported in the left-right direction, and a shock absorber D
Frame body 5 is composed of upper and lower frame receivers 6, 7 and left and right guards 10, 1
1 guides the user to move back and forth. Also this frame 5
The upper and lower frame plates 13 and 14 are integrally connected to each other by an intermediate wall 15 and formed to be long in the front-rear direction, and have a bifurcated frame connecting portion 16 at a front end thereof. 16 is provided with a vertical pin hole 17 having a vertical axis.

The frame connecting portion 2 of the connector C and the frame connecting portion 16 of the shock absorber D are freely connected to each other by a frame joint J via a horizontal pin 18 and a vertical pin P according to the present invention. Specifically, as shown most clearly in FIG. 5, the front portion 19 of the frame joint J is fitted into the forked frame connecting portion 2 at the rear portion of the connector C, and the horizontal pin of the front portion 19 is fitted. By inserting the horizontal pin 18 into the hole 21 and the horizontal pin hole 3 of the frame connecting portion 2, the connector C
And the frame joint J are connected to each other. Further, a rear portion 20 of the frame joint J is fitted to the forked frame connecting portion 16 of the frame 5 of the shock absorber D, and a vertical pin hole 22 of the rear portion 20 is formed. By inserting the vertical pin P into the vertical pin hole 17 of the frame connecting portion 16, the shock absorber D
And the frame joint J.

The frame 5 of the shock absorber D is configured to be able to move back and forth with respect to the left and right middle beams 4 and 4 of the vehicle frame F. That is, on both sides of the frame 5, the left and right center beams are provided. The pair of left and right side guards 1
0, 11 are symmetrically fixed and their guards 10, 1
A front companion plate 24 and a rear companion plate 25 are respectively supported on the front and rear portions so as to be movable back and forth, and the front companion plate 24 contacts the front walls of the left and right companion guards 10 and 11. The rear support plate 25 is in contact with the rear plate 25 and the rear support plate 25 is in contact with the rear walls of the support plates 10 and 11 to restrict the rearward movement. Between the front companion plate 24 and the intermediate wall 15 of the frame 5 and between the rear companion plate 25 and the intermediate wall 15, a rubber pad formed by molding a rubber on an iron plate is stacked. A part and a rear cushion 27, 28 are accommodated respectively. Therefore, when the coupler C is towed forward, such as when starting or accelerating the vehicle, the front companion plate 24
Are supported by the left and right support plates 10 and 11 to apply a compressive force to the front shock absorber 27, and when the coupler C is pushed backward as in the case of deceleration or stop of the vehicle, the rear support plate 25 is used. Are supported by the left and right guards 10 and 11, and a compressive force acts on the rear shock absorber 28, so that energy is absorbed and the shock acting on the coupler C can be absorbed.

Next, the frame joint J connected to the coupler C
The structure of the vertical pin P according to the present invention that connects the shock absorber D to the shock absorber D will be described with reference to FIG. 6. The pin body 30 of the vertical pin P is formed of a steel material into a solid cylindrical body, The outer peripheral edge of the upper surface of the pin main body 30 is chamfered over the entire periphery. Specifically, the pin main body 30 is formed with a tapered surface 31 inclined at about 30 ° with respect to the center line. In the center of the lower surface of the pin body 30, a dead-end female screw hole 32 is formed in the axial direction so that a male screw shaft 52 (see FIG. 7) of the extraction jig R described later is detachably screwed. Further, an annular groove 33 is formed on the outer peripheral surface of the lower part of the pin main body 30 so that a retaining screw 35 described later is removably engaged.

By the way, this vertical pin P is detachably inserted and connected to the connecting portion from below the connecting device C and the shock absorber D so that it can be replaced periodically. As shown in FIGS. 4 and 5, when the frame joint J and the shock absorber D are connected by the vertical pins P, the frame 5 of the shock absorber D
A vertical pin P is inserted and connected to the vertical pin hole 17 of the front bifurcated frame connecting portion 16 and the vertical pin hole 22 of the rear portion 20 of the frame joint J from below. And the vertical pin P
Is supported by an upper frame receiver 6, and its lower end is supported by a lower frame receiver 7. As shown in FIG. 5, the tip of a retaining screw 35 screwed into the front portion of the frame connecting portion 16 of the shock absorber D is engaged with the annular groove 33 of the vertical pin P, A fall is made.

Next, when the coupler C is to be removed, the work of removing the vertical pin P is performed. At this time, after removing the retaining screw 35 and the lower frame receiver 7, the operation of manually pulling out the vertical pin P downward is performed. However, the vertical pin P deteriorates the lubricating oil, adheres dust, The vertical pin holes 17 and 22 are tightly tied (sticking) due to the occurrence of the vertical pin P, and the lower surface of the vertical pin P is substantially flush with the lower surface of the lower frame plate 14, so that it is difficult to remove the lower pin P. However, since the vertical pin P according to this embodiment has a dead end female screw hole 32 formed in the lower surface thereof along the axial direction, the female screw hole of the extraction jig R described later is formed in the female screw hole 32. Are screwed into each other to apply a downward pulling force to the vertical pin P, so that the vertical pin P can be easily removed.

After inserting the new vertical pin P into the frame joint J and the vertical pin holes 22 and 17 of the frame 5, the lower frame receiver 7 is fixed to the lower surface of the frame 5 with bolts 8 and nuts 9. When the retaining screw 35 is screwed into the frame 5 and its tip is engaged with the annular groove 33, a new vertical pin P is inserted into the vertical pin hole 2.
2 and 17 can be inserted and fixed.

Next, the structure of the extraction jig is shown in FIGS.
FIG. 7 is a vertical sectional view of the entire jig, FIG. 8 is a sectional view taken along line 8-8 of FIG. 7, and FIG.
7 is an enlarged sectional view taken along line 9-9 in FIG. 7, FIG. 10 is an operation diagram showing an initial state of extracting the vertical pin by the extraction jig, and FIG. 11 is a state before the extraction of the vertical pin by the extraction jig. FIG. 12 is an operation diagram showing the state, and FIG.
It is sectional drawing which follows a line.

7 to 9, a mounting frame 40 constituting a main portion of the extraction jig R is formed in a hollow cylindrical shape having an open upper end. A screw shaft 41 is screwed in. A rod handle 55 for rotating the screw shaft 41 is fixed to a lower end of the screw shaft 41, and a block receiver 42 in the form of a hollow cylinder is provided with a thrust bearing 43 at the upper end thereof. A cone-shaped connecting block 45 is detachably connected to the upper portion of the block receiver 42 via a bayonet joint 46. Specifically, a connecting male portion 48 having a pair of bayonet pins 47 protruding in the radial direction is fixed to an upper portion of the block receiver 42. On the other hand, a socket 50 provided with a pair of bayonet grooves 49 is formed at a lower portion of the connection block 45 that can be engaged with and disengaged from the connection male portion 48. Therefore, after engaging the connection male portion 48 of the block receiver 42 with the socket 50 of the connection block 45 and rotating the block receiver 42 by a predetermined angle (about 90 °), the connection block 45 can be connected onto the block receiver 42. Can be. Conversely, by rotating the same angle, the block receiver 42 can be removed from the connection block 45. At the center of the upper part of the connection block 45, a male screw shaft 5 which can be removably screwed into the female screw hole 32 of the vertical pin P is provided.
2 is screwed and fixed. Also, on the outer periphery of the upper part of the mounting frame 40, mounting arms 5 extended to both sides in the radial direction are provided.
3 are fixed, and at both ends of the mounting arm 53,
A mounting hole 54 composed of a long hole is opened. The mounting arm 53 connects the extraction jig R to the middle beams 4, 4 of the vehicle frame.
It is for detachably fixing to the lower surface of the device, and specifically, as shown in FIGS.
After the bolts 8 (for mounting the lower frame receiver 7) fixed to the lower surfaces of the center beams 4 and 4, the nuts 9 are screwed there.

Next, a process of extracting the vertical pins P using the extracting jig R will be described mainly with reference to FIGS. 10 to 12. After removing the lower frame receiver 7 from the lower surface of the frame 5, The male screw shaft 52 on the connection block 45 is screwed into the female screw hole 32 of the vertical pin P exposed to the outside, and the connection block 45 is fixed to the lower surface of the vertical pin P. In addition, lower frame receiving 7
Using the mounting bolts 8 and nuts 9 of the mounting arm 53
The jig R is fixed to the lower surfaces of the middle beams 4 and 4 by the above, whereby the upper surface of the mounting frame 40 is brought into contact with the lower surface of the frame 5.
Thereafter, when the rod handle 55 is rotated counterclockwise, the screw shaft 41 having the reverse screw (left-hand screw) advances with respect to the mounting frame 40,
The block receiver 42 at the upper end also advances, and this block receiver 42 is connected to the connection block 45 via the bayonet joint 46 described above. Here, as shown in FIGS. 10 and 11, when the rod handle 55 is rotated clockwise r, the screw shaft 41 is rotated.
Is retracted with respect to the mounting frame 40, and the vertical pin P connected to the connection block 45 is pulled out from the vertical pin holes 17, 22 of the frame 5 and the frame joint J. At this time, since the vertical pin P and the connection block 45 are screwed together with a right-hand screw, their connected state is firmly held even by the right rotation of the screw shaft 41.

After the used vertical pin P is extracted,
The new vertical pin P can be inserted and connected to the vertical pin holes 17 and 22 of the frame 5 and the frame joint J in the reverse procedure as described above. After the insertion and connection of the vertical pin P, as shown in FIGS. 4 and 5, the lower frame receiver 7 is fixed to the lower surface of the center beams 4 and 4, thereby covering the lower surface of the vertical pin P and retaining screws (see FIGS. 5) is engaged with the annular groove 33 of the vertical pin P.

As described above, the vertical pin P according to this embodiment has a dead end female screw hole 32 along its axial direction on its lower surface, so that the vertical pin P can be removed by the removal jig R. Can be easily and easily performed.
In addition, since the tapered surface 31 is formed on the outer peripheral edge of the upper surface of the vertical pin P, the work of inserting and mounting the frame 5 into the vertical pin hole 17 is facilitated, and the outer peripheral surface of the vertical pin P is evenly distributed. Lubricating oil can be easily guided to the vehicle.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention. For example, the extraction jig R for extracting the vertical pins may be other than that of the above embodiment.

[0025]

As described above, according to the first aspect of the present invention, since the vertical pin has a dead end female screw hole along the axial direction on its lower surface, the jig for removing the vertical pin is provided. Can be easily and easily performed. In addition, by forming a tapered surface on the outer peripheral edge of the upper surface of the vertical pin, insertion work into the vertical pin hole becomes easier,
Further, the lubricating oil can be easily guided uniformly to the outer peripheral surface of the vertical pin.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view of a connecting device having a vertical pin P structure of the present invention.

FIG. 2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 1;

FIG. 6 is a partially broken side view of the vertical pin P.

FIG. 7 is an overall vertical sectional view of a sampling jig.

FIG. 8 is a sectional view taken along line 8-8 in FIG. 7;

9 is an enlarged sectional view taken along line 9-9 in FIG. 7;

FIG. 10 is an operation diagram showing an initial state in which a vertical pin is removed by a removal jig.

FIG. 11 is an operation diagram showing a state before the end of extracting the vertical pin by the extraction jig.

FIG. 12 is a sectional view taken along lines 12-12 in FIG. 10;

[Explanation of symbols]

 30 Pin body 31 Taper surface 32 Female screw hole 33 Annular groove 35 ············································································································································································・ ・ ・ Vehicle frame R ・ ・ ・ ・ ・ ・ ・ ・ ・ Jig

Claims (1)

[Claims] 1. A structure of a vertical pin for connecting and disconnecting a coupling (C) and a shock absorber (D) attached to a vehicle frame (F) so that the coupling (C) can be freely inserted and removed from below the pin body. 30) is constituted by a solid cylindrical body, and a tapered surface (31) is formed on the outer peripheral edge of the upper surface of the pin main body (30) over the entire periphery thereof, and the pin main body (30) is formed.
In the center of the lower surface of the bottom end, there is formed a dead end female screw hole (32) to which the male screw shaft (52) of the extraction jig (R) can be detachably screwed along the axial direction thereof. 30. A vertical pin structure of a coupling device in a railway vehicle, wherein an annular groove (33) with which a retaining member (35) is detachably engaged is formed on a lower outer peripheral surface of 30).