JPH06227393A - Lifeguard - Google Patents

Abstract

PURPOSE: To make a light weight guard iron supported with a long support made of a composite material and set the guard iron so as to drop out of the rail, if disconnected, by placing an energy-absorber on the support with the center of gravity of the guard iron offset relative to the vertical plane contg. the rail. CONSTITUTION: A guard iron 1 is fixed to the front axle of the vehicle by the rear end of a long support 2, the front end of the support 2 supports an energy absorber 3, and an impact part 4 is fixed to the energy absorber 3. The support 2 is fixed to an axle box through a coupling member and made of e.g. a glass fiber-based composite material, resulting in a light and small structure and hence the fatigue of the coupling member is small. The energy absorber 3 is disposed on the support with the center of gravity of the guard iron 1 offset relative to the vertical plane contg. the rail so that if the guard iron 1 is disconnected, it will drop out of the rail to eliminate danger of dropping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an obstacle barrier, that is, a device for eliminating obstacles (stones, etc.) that are placed at the head of a locomotive and that have been dropped or placed on rails. .

[0002]

Such devices have been known for a long time. Such a device is fixed to the frame of an axle box or bogie and has an arm extending toward the front of the wheel and curved toward the rail, with the arm extending to the front axle of the locomotive. Include for each wheel above.

French patent application No. 2,653,729 describes one such device. The device includes an elongated support having a first end secured to a front axle of a vehicle. The second end of the support supports, via the energy absorber, an impact component located in front of the wheel and in the vicinity of the rail. The energy absorbing device includes a first disc to which the impact component is fixed. The first disc is articulated to a second disc fixed to the second end of the elongate support, the two discs being parallel to each other. These disks are kept at a constant distance from each other. The disk has a housing for an implant bolt that connects the two disks while rotating them.
If there is an impact on the impact component, the stress is transferred from this component to the first disc. If the stress is greater than the elastic limit of the set of studs, the studs will distort, causing rotation of the first disc and movement of the impact part.

This device has the advantage that in the event of a severe impact, it is sufficient to replace the distorted stud. This device includes a relatively long support to which the energy absorbing device and the impact component are fixed at the ends. The support has a honeycomb structure, but is made of metal, and since it is directly fixed to the shaft box, it constitutes a large mass that is not reduced, together with the energy absorbing device and the impact component. This large mass leads to a fatigue phenomenon during their connection in the form of an axial box. Therefore, there is a risk that one of the connecting members will break due to the large vibration of the axle and then the jammer will come off.

According to this document, the energy absorber is
Since the end of the support is placed in the parallel plane of the corresponding wheel, the center of gravity of this part of the device lies in the plane of the wheel. If the jamb comes off, the weight of the front part causes it to fall on the rail, which is dangerous.

[0006]

The jamb of the present invention makes it possible to overcome these drawbacks. Its weight is
It is reduced by using the composite material for manufacturing the support. It also shifts its center of gravity with respect to the vertical plane passing through the rail. Therefore, if the jamb is removed, it will fall out of the rail.

The manufacture of composite supports has the advantage, in addition to the reduction in weight, of being smaller than that of metal bars.
The support absorbs the stress resulting from the shock on the impact component.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to have a first end located in the front of a wheel and in the vicinity of a rail, with an elongated support secured to the front axle of a vehicle by securing means. And a shock absorber fixed to the energy absorbing device fixed to the second end of the elongated support for each front wheel of the vehicle on the rail. , The elongated support is made of composite material, and the energy absorber is arranged on the support so as to shift the center of gravity of the rejector with respect to a vertical plane passing through the rail. Is to provide.

The energy absorbing device is arranged on the upper part of the support.

The energy absorbing device has a first disc fixed to the impact component, the first disc being fixed to the second end of the elongated support. And is articulated to a second disc that is parallel to the first disc,
The discs are each maintained at a constant distance and at least one stud is attached to the end of the first disc in the hole and the second disc.
Is engaged with the end of the disc in the hole.

The fixing means of the support has a connecting member that enables transmission of stress toward the front axle of the vehicle.

The first end of the elongate support forms a guard wire for a portion of the corresponding axle.

The elongated support is a composite material based on the glass fiber.

The first disc is used as a support for auxiliary devices such as, for example, sandblast pipes or oil supply pipes.

The invention will be better understood, and other advantages and features will emerge, from a reading of the following non-restrictive description accompanied by figures.

[0016]

1 shows the front of a bogie of a railway vehicle in a side elevational view. The first suspension spring 1 on the axle box 12
One can see the bogie frame 10 attached via 1.

The distractor 1 is fixed to the front axle of the vehicle by the rear end of the elongated support 2 which acts as a guard for the axle box. The front end of the support body 2 supports the energy absorbing device 3, and the energy absorbing device 3 supports the blowout port 51 with the end of the sandblast pipe 5 near the rail 7 and the corresponding wheel 13. To do.

FIG. 2 is a side view of the rejector as seen from the position between the rails. FIG. 3 is a plan view of the handicapped device. Figure 4
FIG. 4 is a sectional view taken along line IV-IV in FIG. 2.

The elongated support 2 made of, for example, a composite material based on glass fibers is formed by assembling two parts in the longitudinal direction. The upper part 21 and the lower part 22. These two parts form a hollow support.

The support is a connecting member 23 which will be described in detail below.
And 24 are fixed to the axle box.

The front end of the support is made according to French patent application No. 2,653,
It has an energy absorbing device 3 of the type described in No. 729. The device 3 comprises a first disc 31 which is fixed to an impact part 4 which is arranged to be approximately 40 mm above the rail. The disc 31 is articulatedly connected to a second disc 32 which is fixed to the support 2. The disks 31 and 32 are parallel to each other.

The circular disc 32, which is preferably circular, is used as the support component 2.
It is fixed to the support 2 via 5. The disc 32 includes a central protrusion 33 that functions as a rotation shaft on the disc 31. The ends of this protrusion are threaded, and a nut 34 coupled with washers 35 and 36 allows the disc 31 to be maintained.

The discs 31 and 32 are maintained at a fixed distance by means of the shoulders of the protrusion 33 on which the disc 31 is mounted. The metal stud 37 is a disk 3
1 and 32 are joined, the ends of which engage in facing holes made in these discs. The studs are arranged parallel to the hinge axis 38 of the disc 31.

The energy absorbing device 3 is arranged on the elongated support 2 and the disks 31 and 32 are in the slope with respect to the railway. The disc 31 extends into the plane of the wheel 13 for supporting the impact component 4.

It is possible to adjust the height of the impact component 4 with respect to the rail. Obviously, this adjustment is necessary as the wheel wears. For this purpose, the disc 31 and the impact component 4 have opposing raspy surfaces. The fixing between the disc 31 and the impact component 4 is performed after adjusting the height of the impact component with respect to the rail by the screw 41 and the nut 42.

The fastening flange 43 enables the sandblast tube 5 to be fixed on the impact part 4.

The disc 31 and the impact part 4 can be made of aluminum and the disc 32 can be made of steel. This contributes to the displacement of the center of gravity of the jamb with respect to the plane of the wheel.

The disc 32 is fixed on the slope of the support component 25 by means of four screws 39. The support component 25 may be made of aluminum.

The support 2 is subject to numerous stresses during normal functioning. The structure and the fixing mode of the support 2 make it possible to withstand all stresses. The structure is better seen in FIGS. 4, 5 and 6.

The parts 21 and 22 of the support 2 are assembled by gluing and riveting. The assembly makes it possible to envisage or place the various parts that allow good stress transfer.

The cross section of the support 2 seen in FIG. 4 shows the presence of the stiffener 61 between the upper and lower surfaces of the support 2.
The stiffener 61 makes it possible to avoid the phenomenon of the so-called "drum skin" between the two surfaces. The reinforcing material 61 may be aluminum. The support component 25 uses four bolts 62 with lock nuts for its fixation, so that there are four reinforcements (see FIG. 3). A sleeve 64 surrounding the bolt 62 enables the transfer of shear stress between the metal and composite parts. A sufficiently large washer 65 allows for the distribution of the stress exerted by the head of the bolt 62.

The connecting member 2 seen in the sectional view of FIG.
4 has a horizontal support base 71 made of steel.
Two vertical side plates, which are also made of steel, are welded on the top, which makes it possible to cover the support 2 as a whole. The pedestal 71 has two holes 73 (seen on FIG. 3) that allow for fixing on the axle box. Upper part 21 of support 2
Has an upper insert 74 and a side insert 75 (only one of which is shown) used to secure the support on the connecting member 24 by means of screws 76 and 77. The metal ring 78 enables transfer of shear stress between the metal and composite parts.

The connecting member 23, which can be seen in the sectional view of FIG. 6, has a horizontal support 81 made of steel, and a vertical armpit 82 made of steel is fixed on the support 81 by bolting. And allows the whole to cover the support 2. The support 81 has two holes 83 (also visible in FIG. 3) that allow the fixing of the member 23 on the axle box. The upper portion 21 of the support 2 is connected to the connecting member 23 by screws 86, 87 and 88.
On top of which the upper insert 84 and the side inserts 85 (only one of which is shown) are used for fixing the support 2. The front load of the support 2 is the lock nut 9
Obtained by bolts 86, 87, 88 with 6, 97, 98. Washer springs coupled to bolts, such as 91 and 92, may compensate for creep of the composite material. The rings 93, 94 and 95 allow the transfer of shear stress between the metal and composite members.

The nut 96 is mounted on a washer with a shoulder that extends opposite the ring 93.

The upper insert 84 has a fixing groove in the head of the screw 86, which facilitates tightening of the screw. The same applies to the transverse inserts facing the lock nuts 97 and 98.

[Brief description of drawings]

FIG. 1 is a partial elevational view of a bogie with a jamb device of the present invention.

FIG. 2 is a front view of the handicapped device of the present invention.

FIG. 3 is a plan view of the handicapped device of the present invention.

FIG. 4 is a cross-sectional view taken along line IV-IV of the handicap device of the present invention.

FIG. 5 is a cross-sectional view showing details of the handicapped device of the present invention.

FIG. 6 is a cross-sectional view showing details of the handicapped device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disturber 2 Support 3 Energy absorbing device 4 Impact part 5 Sandblast tube 7 Rail 10 Frame 11 Spring 12 Axle

Claims (7)

[Claims] 1. A long support body having a first end fixed to a front axle of a vehicle by a fixing means, a front end of a wheel and a vicinity of a rail, and a first end of the long support body. An impactor fixed to the energy absorbing device fixed to the end of 2 for each front wheel of the vehicle on the rail, wherein the long support is a composite. Manufactured from a material, the energy absorber is positioned on a support such that the center of gravity of the device is offset with respect to the vertical plane passing through the rail. 2. The jamb according to claim 1, wherein the energy absorbing device is arranged on an upper portion of the support. 3. The energy absorbing device has a first disc fixed to an impact component, and the first disc is
The first support is fixed to the second end of the elongated support and
Articulated to a second disc parallel to the disc, the discs each being maintained at a fixed distance, and at least one stud being at the end in the hole of the first disc. When,
The ballast according to claim 1 or 2, which is engaged with an end of the second disc in the hole. 4. The handicapped device according to claim 1, wherein the fixing means of the support has a connecting member that enables transmission of stress toward the front axle of the vehicle. 5. The first end of the elongated support is
5. A guard wire for the corresponding axle part is formed.
The handicapped device according to any one of 1. 6. The handicapped device according to claim 1, wherein the elongated support is a composite material based on the glass fiber. 7. The jamb according to claim 1, wherein the first disc is used as a support for an auxiliary device such as, for example, a sandblast pipe or an oil supply pipe.