JPH09195202A - Switch rod connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect switch rods to tongue rails by fixing a connection plate to the tongue rails, gripping it with a connection hardware, inserting connection pins into insertion holes in the connection plate, the connection hardware and the switch rods and elastically thrusting the connection pins with a holddown hardware. SOLUTION: Tongue rails are fixed with a connection plate 15 and an insertion hole 16 is formed in the end of the connection plate 15. A connection hardware 18 is fitted therein in the condition that a collar 17 is inserted in the insertion hole 16. A switch rod 13 is welded to the connection hardware 18. Insertion holes 21 in the upper and lower side 19, 20 of the hardware 18 and an insertion hole 22 in the switch rod 13 are formed. The connection pin 23 is inserted therein from upward. At this time, the head 24 serves for locking. A holddown hardware 25 is mounted on the hardware 18 to elastically thrust the head 24. Falling preventive metal fittings 28 are fitted into the switch rod 13 and the hardware 18. A protrusion 30 is welded to the connection plate 15 to relieve the collar 17 and the pin 23 from burden. In this way, inspection and replacement work can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a rolling rod, which can be easily connected to a tongue rail without requiring special skill, and can be easily inspected, and may cause a signal failure. It relates to a structure that can be surely prevented.

[0002]

2. Description of the Related Art In a railroad track turnout, a pair of tongue rails are interconnected by a rolling rod and a rolling bar is slid in a gauge direction by a switch adjuster rod to convert the pair of tongue rails. It is common to switch points between the main track and the branch track.

As shown in FIG. 8, a conventional rolling rod connecting structure has a connecting plate 101 fixed to a tongue rail 100 with bolts and nuts, and a collar 1 is inserted into a through hole of the connecting plate 101.
With the 02 inserted, a U-shaped connecting fitting 103 is fitted to the tip of the connecting plate 101, and the connecting bolt 105 is inserted into the rolling rod 104, the collar 102 and the connecting fitting 103, and screwed into the nut. Was adopted.

In this case, since the distance between the connecting portion and the crushed stones of the roadbed is small and the connecting bolt 105 is inserted from above, the screwing work with the nut 106 becomes complicated, so the connecting bolt 105 is moved downward. The lower nut 106 is loosely fastened and is locked by the lock nut 107 via the spring washer 108 in order to facilitate the rotation of the connecting plate 101. There is.

By the way, if the nuts 106 and 107 are loosened due to vibrations caused by train running, or if the connecting bolt 105 is broken, the connecting bolt 105 is broken.
When is dropped, the rolling rod 104 and the tongue rail 100 are disconnected from each other, and the points cannot be switched, which may cause a train accident or the like.

Therefore, conventionally, as shown in FIGS. 9 (a) and 9 (b), a U-shaped portion 201 is provided on the side of the U-shaped portion 201 by using a fall prevention metal fitting 200 in which a receiving plate portion 202 is formed below the U-shaped portion 201. A structure has been adopted in which the rolling rod 104 and the U-shaped metal fitting 103 are fitted from the other side, the head of the connecting bolt 105 is received by the receiving plate portion 202, and the connecting bolt 105 is prevented from falling off.

[0007]

However, since the conventional rolling rod connecting structure is connected by the threaded connecting bolts 105, stress concentration occurs in the threaded portions of the connecting bolts 105, and the train travels. The threaded portion of the connecting bolt 105 is easily fatigued and broken due to repeated vibrations, and the collar 102 is easily worn due to the threaded portion of the connecting bolt 105. The connecting bolt 105, the collar 102, etc. are regularly inspected. However, it is necessary to replace it in a relatively short period of time, and it is necessary to remove and attach the drop-prevention metal fitting 200 each time, which is very complicated.

Further, due to the structure of the fall-prevention metal fitting 200 in which the lower part of the rolling rod 104 and the U-shaped metal fitting 103 is sandwiched by the pressing force of the U-shaped portion 201, the fall-prevention metal fitting 200 uses a tool such as a hammer. Since it is necessary to attach and detach the switch adjuster rod 300 during the attaching and detaching work, a skill is required for the work.

Further, the fall prevention fitting 200 is shown in FIG.
As shown in (a), if the switch adjuster rod 300 is not attached / detached, it is easy to contact the switch adjuster rod 300 after attachment. Therefore, the work space is small when attached / detached from the switch adjuster rod 300 side.
As shown in (b) of 0, the opening of the U-shaped portion 201 of the drop-prevention metal fitting 200 is permanently deformed and widened, and the fall-prevention metal fitting 200 moves and pops out unless the tip is restrained, and the switch adjuster rod 300 and There is a risk that the contact may cause a track short circuit and a signal system failure may occur.

In view of the above problems, the present invention enables the rolling rod to be easily connected to the tongue rail without requiring any skill, and can be easily inspected and the risk of signal interference can be reliably prevented. An object is to provide a connecting structure of levers.

[0011]

Therefore, a connecting structure for a rolling rod according to the present invention is a structure for connecting a branch tongue rail and a rolling rod of a railway track, and is connected to the tongue rail. The plate extends in a substantially horizontal direction and is fixed. The connecting plate is sandwiched by U-shaped connecting fittings on the upper and lower sides thereof, and the connecting plate, the connecting fitting, and the rolling fitting are fixed by stacking the rolling rods on the connecting fittings. While the insertion holes of the rods are aligned, a connecting pin with a head is inserted from above into each of the insertion holes of the connecting plate, the connecting metal fitting and the rolling rod, and the head is prevented from coming off downwards. The pressing metal fitting having the leg portion is fitted into the connecting metal fitting from above and fixed to the connecting metal fitting by the elastic clamping force of the leg portion, and the pressing metal member elastically presses the head of the connecting pin. Characterize.

The connecting pin may be of a type having a head. However, since the connecting pin is held in the insertion hole of the connecting plate, the connecting fitting and the rolling rod at the head, the connecting pin is It is necessary that the diameter is larger than the insertion hole of the upper connecting fitting. Further, the holding metal fitting is held by the connecting metal fitting by its legs, and the head portion of the connecting pin is pressed by the holding metal fitting itself.

If the connecting pin falls off when the connecting pin is broken, the rolling rod and the tongue rail may be disconnected and a train accident or the like may occur. In this case, the conventional fall prevention metal fittings may be used, but there is still concern about the skill of the above-mentioned work and signal failure. Therefore, it is preferable that a fall prevention fitting having a substantially annular shape is fitted in the connecting fitting and the rolling rod from the longitudinal direction, and a receiving plate portion is formed on the fall preventing fitting to receive the lower end of the connecting pin.
The fall prevention metal fitting may have a perfect annular shape, or may have a substantially horizontal C-shape, a horizontal D-shape, or any other shape. Further, the captive metal fitting is not necessarily required to have a spring property, and corrosion resistance may be taken into consideration. Therefore, it is preferably manufactured from stainless steel.

[0014]

According to the present invention, since the connecting plate and the rolling rod are connected by the connecting pin with the head, the connecting pin does not have a screw portion which is a stress concentration portion, which causes fatigue. The risk of breakage can be eliminated, and even when a collar is used, there is little wear of the collar. Moreover, it suffices to insert the connecting pin into the insertion hole from above, and not only a tool is unnecessary for assembly and disassembly, but also work can be performed above the rolling rod
The inspection work can be simplified and shortened, and the safety of the worker can be improved.

Further, since the connecting pin is pressed by the holding metal fitting, the connecting pin can be prevented from rising and can be prevented from coming off unexpectedly, and the connecting pin can be prevented from vibrating due to vibrations such as running trains to reduce wear. it can.

Further, when the fall-preventing metal fitting is formed substantially in the front shape, the fall-preventing metal fitting is rolled and detachably attached to the rod and the connecting fitting from the longitudinal direction, so that it is hit from the side with a hammer or the like like a conventional fall-preventing fitting. There is no need, there is no deformation at the time of attachment / detachment, and there is no danger of it coming off. Moreover, since the distance between the drop-preventing metal member and the switch adjuster rod can be increased, the trouble of the signal system due to the track short circuit can be reliably eliminated. Furthermore, it is not necessary to remove the fall prevention metal fittings at the time of inspection and replacement, and the inspection and replacement work can be simplified.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to specific examples shown in the drawings. 1 to 7 show a preferred embodiment of the present invention. In Fig. 1, at the point of the track turnout, rails 1 of the main line side track and the branch line side track
A pair of tongue rails 12, 12 are disposed between 0 and 11, the tongue rails 12, 12 are connected to each other by a rolling rod 13, and the rolling rod 13 is connected to a switch adjuster rod 14. The tongue rails 12, 12 are switched between the main track and the branch track by sliding the rolling rod 13 in the track direction by the switch adjuster rod 14.

The rolling rod 13 is connected to the tongue rail 12 by the following structure. That is, as shown in FIGS. 2 and 4, the connecting plate 15 is attached to the tongue rail 12 by bolts.
The connection plate 15 is fixed by a nut (not shown), extends horizontally, and has a relatively large diameter insertion hole 1 at its tip.
6 are formed.

This connecting plate 15 has a U-shaped connecting fitting 18 at the top and bottom with a collar 17 inserted in its insertion hole 16.
The rolling rods 13 are stacked below the lower side portion 20 of the connecting fitting 18 and fixed by welding. Insertion holes 21 and 21 are formed in the upper side portion 19 and the lower side portion 20 of the connecting fitting 18, and the insertion hole 22 is also formed in the rolling bar 13.
Are formed, and the insertion holes 22, 21, 16 are aligned with each other.

Further, a connecting pin 23 is inserted from above into the through holes 21 and 22 of the connecting member 18 and the rolling rod 13 inside the collar 17. As shown in FIG. 7, the connecting pin 23 has an insertion hole 21 in the upper side portion 19 of the connecting fitting 18 at the upper end.
A head 24 having a larger diameter is formed, and the head 24 has a connecting fitting 1
The connection pin 23 is prevented from coming off by contacting the periphery of the insertion hole 21 of the upper side portion 19 of the reference numeral 8, and the inserted state is maintained.

A press fitting 25 is attached to the upper side portion 19 of the connecting fitting 18, and the head 24 of the connecting pin 23 is elastically pressed by the pressing fitting 25. This holding metal fitting 25 is manufactured by using a spring steel plate, and is a front view (a) of FIG.
As shown in (b) and side view (c), the tip half is bent upward, then extends almost horizontally, and the tip is bent downward. A pair of legs 26, 26 are integrally formed, and the legs 26, 26 extend horizontally to the left and right, then inwardly inclined and bent downward, and the legs 26, 26 are connected. The metal fitting 18 is attached to the upper side portion 19 of the metal fitting 18, and the pressing metal fitting 25 is fixed to the upper side portion 19 of the connecting metal fitting 18 by its elastic holding force.

Further, a falling prevention fitting 28 is fitted in the lower side portion 20 of the rolling rod 13 and the connecting fitting 18 from the longitudinal direction. The fall prevention metal fitting 28 is made of stainless steel plate and has a substantially horizontal D-shape on the front as shown in the front view (a), plan view (b) and side view (c) of FIG. A receiving plate portion 29 extends forward and is integrally formed with
A step portion is formed in the middle of the receiving plate portion 29 so that the connecting pin 23
It is designed to receive the bottom edge of.

Further, the projection 30 is fixed to the connecting plate 15 by welding or the like, and the tip of the upper side portion 19 of the connecting fitting 19 abuts when the points are changed in the direction of the arrow in FIG. It is designed to reduce.

In the above connecting structure, the connecting pin 2
3 does not have a stress concentration portion such as the threaded portion of the connecting bolt, the risk of breakage due to fatigue can be eliminated, and the collar 17
There is little wear, and the life of parts can be extended and connection reliability can be improved.

When assembling, the connecting pin 23
From above into the insertion holes 21 and 22, and press the metal fitting 2
It suffices to fit 5 into the upper side portion 19 of the connecting fitting 18, and assembling and disassembling can be performed without using a tool such as a hammer. Moreover, as a result of being able to perform all the work above the rolling rod 13, the inspection and replacement work can be simplified and shortened, and the safety of the worker can be improved.

Further, since the connecting pin 23 is pressed by the pressing metal fitting 25, the connecting pin 23 does not float up, and the accidental detachment of the connecting pin 23 can be reliably prevented. Moreover, the connecting pin 23 and the collar 17 can be prevented from being worn without shaking the connecting pin 23 due to vibrations such as running of the train.

Further, a fall prevention fitting 28 having a substantially horizontal D-shape on the front side is rolled, and a lower side portion 20 of the rod 13 and the connecting fitting 18 is rolled.
Since it is attached and detached from the longitudinal direction, it is not necessary to hit it with a hammer or the like unlike the conventional fall-prevention metal fittings.
Therefore, there is no deformation at the time of attachment / detachment, and there is no risk of detachment. Furthermore, since the distance between the fall prevention metal fitting 28 and the switch adjuster rod can be increased, it is possible to reliably eliminate the trouble of the signal system due to the track short circuit. Moreover,
There is no need to remove the fall prevention metal fittings for inspection and replacement, which also makes it possible to simplify the inspection and replacement work and shorten the time.

[Brief description of the drawings]

FIG. 1 is a plan view showing a tip side portion of a branching point portion to which the present invention is applied.

FIG. 2 is a side view showing a preferred embodiment of the present invention.

FIG. 3 is a rear view showing the embodiment.

FIG. 4 is a plan view showing the embodiment.

FIG. 5 is a diagram showing a front surface, a plane surface, and a side surface of the pressing metal fitting in the embodiment.

FIG. 6 is a front view of the fall prevention metal fitting in the above embodiment,
It is a figure which shows a plane and a side surface.

FIG. 7 is a front view showing a connecting pin in the embodiment.

FIG. 8 is a side view showing a conventional connecting structure for a rolling rod.

FIG. 9 is a view showing a front surface and a plane surface of a fall prevention metal fitting used in a conventional coupling structure.

FIG. 10 is a diagram for explaining a problem to be solved by the invention.

[Explanation of symbols]

12 Tongue rail 13 Rolling rod 14 Switch adjuster rod 15 Connecting plate 16 Insertion hole 17 Collar 18 Connecting metal fitting 19 Upper side part 20 Lower side part 21 Inserting hole 22 Inserting hole 23 Connecting pin 24 Head 25 Holding metal fitting 26 Leg part 28 Fall prevention Bracket 29 Support plate

Claims (2)

[Claims] 1. A structure for connecting a branch tongue rail of a railway track and a rolling rod, wherein a connecting plate is fixed to the tongue rail by extending in a substantially horizontal direction, and the connecting plate is U-shaped above and below. It is sandwiched by the shape of the connecting fittings, and the rolling bars are stacked and fixed on the connecting fittings,
The connecting holes of the connecting metal fittings and the rolling rod are aligned, while the connecting pins with heads are inserted from above into the respective connecting holes of the connecting plate, connecting metal fittings, and the rolling rod, and are lowered at the head. The press fitting with a pair of legs is fixed to the connecting fitting by the elastic clamping force of the leg, and the pressing fitting is elastically attached to the head of the connecting pin. Connecting structure of rolling rod characterized by being pressed. 2. A fall prevention fitting having a substantially annular front shape is fitted in the connecting fitting and the rolling rod from a longitudinal direction, and the fall preventing fitting is formed with a receiving plate portion for receiving a lower end of the connecting pin. The connection structure of the rolling rod according to 1.