JP2502911B2 - Railcar bogie - Google Patents

Abstract

Bogies for railway vehicles with variable gap between wheels, consisting of a center frame (1), to which four oscillating arms are united by means of relative joints (2), at each of which ends bearing boxes for each rolling assemblies (3) are housed, which can be transversely moved, the wheel being located in each of two positions corresponding to two gauges, relying on the fact that the opposed portion of each arm rests on a helical spring (4), the lower end of which is resting on the center frame bottom, and at the end of this portion there is mounted a vertical shock absorber (5). <IMAGE>

Description

Detailed Description of the Invention

[0001]

The present invention relates is applied to a railway vehicle manufacturing industry, and railroad cars that are applied to the overall railway industry
Regarding both bogies.

[0002]

2. Description of the Related Art Due to the existence of different track gauges in the railway network, it hinders the transportation of passengers and cargo. Due to such a situation , many problems have been solved in order to eliminate many problems currently caused by the transportation of passengers and cargo. It is well known that there is a need to carry out the research and solution of.

[0003]

Against However, this problem [0005], in particular, is no entirely satisfactory solution with respect to adapt the coaches or wagons equipped with a conventional truck not been obtained to this day.

One of the current methods is to replace the entire trolley, but for this purpose it is necessary to lift the trolley body and disassemble the elements forming the brake, the electric wire network, etc. beforehand. these operations are loss between time has authored means that it takes extremely labor intensive.

[0005] It is also known to provide a series of devices for obtaining an axle in which the spacing between the wheels can be varied by moving the axle body, but this method is also extremely concerned with both acquisition and maintenance. It is complicated and expensive and does not mean a practically practical method.

[0006] primarily main problem that inhibits to obtain a suitable mechanism of this type, providing a typical wheels applying pressure to the procedure safety when mounted on the axle, a similar assurance regarding so rigid It is possible to fix the wheel to the axle.

Furthermore, if it is necessary to make automatic changes in a short time and to allow the vehicle to travel a sufficiently long distance in a complete running state without having to disassemble the mechanism at a maintenance factory, it is actually It is extremely difficult to find a way to address all these requirements.

[Patentes] who is also the applicant of the present invention
TALGO, S.M. A. That it is currently filed in the company's name
The presence of inventions of the Spanish patent application Ser. No. 332,453 is oxalic <br/> knowledge. In this patent application, the idea of using a single axle bogie with variable spacing between wheels is considered.

However, a series of requirements that are strictly considered necessary and the current to be favorably drive the vehicle even consider overall the invention is not expected.

[0010]

The spacing between wheels proposed by the present invention SUMMARY OF] variable railway vehicle bogie, in the present invention is fixed to an independent axle the rolling assembly has fitting engagement bearings at both ends It is proposed that each rolling assembly finished product can be moved laterally with respect to the track, and the placement of the bearing box can only be changed functionally with respect to the trolley, It constitutes a clear solution to the current problem to this issue.

Thus, the features of the rolling assembly for changing the gauge can be similar to those in conventional rolling assemblies for a single gauge .

[0012] Specifically, the truck for a railway vehicle interval variable between wheels, constant for implementing the procedures needed to travel through the two types of rail networks with different gauges <br The distance between the wheels can be changed quickly when passing through the installation equipment.

The present invention has the following advantages incorporated into this new type of truck:

The rolling assembly consists of two wheels running daily in the European rail network and in two gauges of the Spanish rail network, used by the applicant of the present invention , PATENTES TALGO. It has the same format as the proven ones that have been used commercially for many years in rolling stock.

The transition from one gauge to another is
It is performed in a gauge change facility similar to that currently existing to perform the gauge change of the TALGO rolling assembly described above.

Both steering and braking adjustments are common to both gauges and do not require any additional work to fit one or the other gauge.

[0017] In general, is the object carriage of the present invention is basically constituted by a central frame, four oscillating arm to the central frame is coupled by a corresponding joint sets rolling at one of its ends Each of the three-dimensional bearing boxes is housed.

The rolling assembly is movable laterally with respect to the track and the wheels are in each of two positions corresponding to both gauges.

[0019] The opposite side of the portion of each arm is N the corresponding racemate
If being placed on the roots, the lower end of the spring rests on the bottom of the center frame.

Further, the end of the part, corresponding vertical
A directional shock absorber is attached.

[0021] Each of these assemblies, namely join door
When the vibration arm with a helical spring, a damper corresponding
It constitutes the main suspension of the rolling assembly.

[0022] In one embodiment of the present invention, the major
That is , in addition to the primary suspension, the trolley has another secondary suspension.

[0023] to improve the consistency of the curve, and in order to eliminate an independent dynamic effects associated with being fitted on the wheel,
This is the format of the carriage is provided with a guide device, this scheme <br/> the apparatus is to be compatible to the articulated truck.

Four rolling assemblies are attached to each trolley, and each trolley is a half-axle integrated with each other.
It consists of wheels and brake discs, and a bearing box attached to the end of the half axle.

The bearing box has a cylindrical surface on its upper side, on which the corresponding end of the oscillating arm of the carriage rests during normal running conditions.

To accommodate the bearing box and the bearing box in order to distribute the load more evenly on the support surface
It can be interposed an elastic sheet between the case formed on the oscillating arm in order, the sheet bearing ball
It is necessary to firmly fix the box and the vibrating arm to one of the supporting surfaces of the case .

Thus, the vertical position between the bearing box and the vibrating arm is defined.

For a better understanding of the invention, longitudinal axles, acting forces or movements mean trajectories, ie parallel to the track, and transverse means trajectories, ie.
Means in the horizontal plane at right angles to the Chi line.

[0029] The surface is cylindrical in the longitudinal direction, the axis of the bearing box is automatically centering a predetermined position.

The vertical flat surfaces, one of which is the front surface of the bearing box and the other of which is the rear surface, are fitted to the corresponding vertical flat surfaces of the insert carried by the vibrating arm .

An outer casing of the bearing box,
Bearing bowl, i.e. containing the bearing
An elastic bush is interposed between the container and the bearing, so that the bearing has a small degree of freedom to absorb a small axial alignment error, which is in the lateral direction that occurs during vehicle travel. So that the acting force is transmitted to the oscillating arm of the truck via both bearing boxes of each half axle
There is a need to.

Protrusions located on the front and rear vertical surfaces of each bearing box and integral with each surface form the lateral fixing elements of the bearing box.

Rolling assembly provided in the case of the vibrating arm
The lateral displacement of the bearing box is prevented by adjusting the fixing element consisting of the projection between the stop member and the latch for locking the rest in place .

The thickness of the latch when the two vertical longitudinal faces (ie, the side faces ) of each of said protrusions are touched.
They are separated from one another by a distance close to half the difference obtained by subtracting the gauge.

The bridge integral latches are adjusted by lateral outer surface in the longitudinal direction between the two vertical faces of Ke <br/> over scan the oscillating arm, their exact location, integrated to the case of the oscillating arm The latch is adjusted and held between the vertical longitudinal surfaces of the embossed insert.

Thus, the latches are movable only in the vertical direction, deviations in other directions are eliminated by the rigid stop means.

The latch in the vertical direction is fixed at its running position by the spring, it latches the larger compressive stress than plus the weight of the latch to the dynamic forces generated prevents so as not to drop.

[0038] Optionally, the spring adds safety retaining device.

Bridge integrated with latch , change gauge
The "T" -shaped part belonging to the stationary installation for carrying out is designed so that it can be introduced into the lower part of the bridge. This "T" shaped portion pushes the bridge vertically downwards and pushes the latch into a spring, a safety retention device,
To force the Uwamawari drop applied by rubbing friction.

[0040] The bridge by fitting the inclined surface inside thereof exists on the latch release guide stationary equipment
The latch release guide is designed to act on the central portion of the bridge.

The insert kicked <br/> Installing integrally with the casing vertical plane of the vibrating arm, in addition to act as transverse stop means for latches, the surface of the bearing box on the longitudinal It has a vertical lateral surface that is adjusted in direction.

The insert is that provides a lateral guide having an inclined upper surface constituting a sliding surface between the bearing box of the lateral movement of the assembly rolling.

[0043] have the same inclination as this is also the lower surface of the protrusion, the
The lower surface is separated from the upper surface of the lateral guide during normal traveling and is parallel to the upper surface.

When the trolley is suspended to change the gauge, the bearing box is lowered until the underside of the protrusion rests on the lateral guide. Bearlin through this contact
The gbox is moved laterally.

[0045] Since the sliding surfaces of the lateral guide is inclined, lateral movement when the wheel to change the gauge while traveling interfere
Harm that such granules (for example, refuse) to eliminate.

[0046] positioned on the inclined surfaces of the protrusions, the sliding member made of synthetic metal material having a high have compression resistance at a lower coefficient of sliding friction, when transferring the rolling assemblies to be located in each of the two gauges to facilitate sliding wood rolling shy assembly.

The brakes of the wheels during movement are fixed via the lateral sides of the projections in the vertical direction.

[0048] In order to characterize better facilitate an understanding of the present invention, describes an embodiment of the present invention with reference to attachments drawings
It

[0049]

From EXAMPLES Figure 1, carriage for the purpose car wheels between隔可varying railcar is the present invention are first composed of a central frame 1, the four vibrating arms in the central frame 1 pair
Each bearing box 9 of each rolling assembly 3 connected to the corresponding end of the vibrating arm by a corresponding joint 2.
(See also FIG. 3) .

The rolling assembly 3, these can be motion transversely to the track, the wheel is adapted be located in each of two positions corresponding to two track gauges.

The opposite part of each oscillating arm is mounted on the corresponding et <br/> Senba root 4, the lower end of the helical spring 4 is placed on the bottom of the central frame 1.

A corresponding shock absorber 5 is attached to the end of the opposite portion .

Each of these assemblies, namely the oscillating arm with the joint 2 , the helical spring 4 and the shock absorber 5 , constitutes the main suspension of the corresponding rolling assembly 3 and the carriage has this main, ie primary, suspension. another alternative secondary suspension provided obtained Rukoto suspension is particularly appreciated.

[0054] Although not shown, so that to match the curve
Was improved, and in order to eliminate the inherent dynamic effects due to the independent wheels so worn, the guide device of this type bogie
Can be provided. That is, that thereby obtained is provided with a device capable of fitted to trolley articulation.

[0055] rolling assemblies 3 shown in FIG. 3 are instrumentation wearing four each truck, each rolling assembly 3 is integral with one another
Half axle 6 which is of the wheel 7, and brake disc 8
When, and a <br/> the bearing box 9 attached to the end of the half axle 6.

[0056] bearing box 9 can be seen from FIG. 3 has a cylindrical surface 10 (see also FIG. 4) at its upper part, on said surface 10, in the normal running position, shown in cross section in FIG. 4 end of the corresponding oscillating arm of the bogie is mounted to.

In order to evenly distribute the load on the support surface, the bearing box 9 and the bearing box 9 are accommodated.
Can be interposed an elastic sheet between the case formed on the oscillating arm in order to capacity, the elastic sheet is this
It needs to be firmly glued to one of them .

Thus, the vertical position between the bearing box 9 and the vibrating arm is completely defined.

As described above , the longitudinal axle, the acting force,
And movement is parallel to the trajectory ,
The lateral ones Ru element der perpendicular to the track be in the water plane.

[0060] The circular cylindrical surface 10 of the long side direction, the axis of the bearing box 9 is determined heart automatically place.

Vertical flat surfaces 11 (see FIG. 7) , one on the front and one on the rear of the bearing box 9, are carried on the vibrating arm.
Are fitting engagement in a corresponding vertical flat faces of inserts 12 and 13.

The outer casing of the bearing box 9 and the bearing cup, that is, the bearing are housed.
An elastic bush is interposed between the housing and the bearing, so that the bearing has a degree of freedom to absorb any small axial alignment error, which is dependent on the lateral force acting during travel. It is necessary in order to be transmitted to the oscillating arm of the bogie via both bearing boxes 9 of the half axle 6 .

Vertical direction before and after each bearing box 9
Protrusion 1 located on flat surface 11 and integral with both surfaces 11
Reference numeral 4 constitutes a lateral fixing element of the bearing box 9 .

[0064] is adjusted between the stop member 15 or 15 of the case of the oscillating arm 'and the latch 16, lateral movement of the bare ring box 9 Waso is Ru is prevented.

[0065] The two faces of the longitudinal direction of each of the vertical direction of the projection 14 (the side surface) of the latch when contact is made 16
They are separated from each other by close to half the difference obtained by subtracting the track gauge thickness distance.

The latch 16 integral with the bridge 17 is longitudinally adjusted by its lateral outer surface between the two vertical faces of the case of the vibrating arm, their exact position being integral with the case of the vibrating arm. of the insert 12, 1
<br/> is held by being adjusted between 3 vertical longitudinal plane.

[0067] Thus, the latch 16 be movable only in the vertical direction, movement in the other direction is prevented by the rigidity of the stop means.

[0068] Latch 16 is secured to its running position by the spring 18 in the vertical direction, the compression stress of the spring is greater than plus the weight of the latch 16 to the dynamic forces that may occur, the descent of the latch 16 Block.

[0069] Finally, place it 18 can be provided with a safety holding device 19.

[0070] which is integral with the latch 16 bridge 17 orbits of
It is designed so that a "T" -shaped part belonging to a fixed installation for changing the gauge can be introduced into the lower part of the bridge 17. The "T" shaped portion causes the bridge 17 to move vertically downward , overcoming the force exerted by the spring 18 , the safety retainer 19 , and friction to cause the latch 16 to descend.

[0071] By the bridge 17 to conform to the inclined surface inside thereof exists on the latch release guide fixed equipment, latch release guide is designed to act on the central zone of the bridge 17.

This type of structure is shown in the perspective and cross-sectional views of FIGS.

[0073] Besides you act as a lateral stop means for the latch 16 and the insert 12 and 13 which are attached <br/> taken together in the vertical plane of the casing of the oscillating arm, the plane of the bearing box 9 thereon 11 has a vertical lateral surface which is adjusted in the longitudinal direction.

The insert 13 is further provided with a lateral guide 20.
The guide 20 has an inclined upper surface and constitutes a corresponding sliding surface of the bearing box 9 during lateral movement of the rolling assembly 3 .

[0075] the lower surface 21 of the protrusion 14 also has likewise inclined, during normal traveling and the upper surface of the guide 20 is released, are parallel.

When the carriage is suspended to change the track gauge , the bearing box 9 descends until the lower surface 21 of the projection 14 rests on the guide 20, and lateral movement is performed through this contact.

[0077] What the inclination of the sliding surface of the guide 20, to interfere with the lateral movement of the wheel when changing the driving in gauge
Such particles are also excluded.

[0078] positioned below surface 21 of the projection 14, by making the slide in synthetic metal material with a high compression resistance at low sliding friction coefficient, rolling assemblies when transferring the rolling assemblies 3 on each of two gauges Make it easier to slide 3 .

[0079] Although not shown, brake wheels Ru provided vertically transverse face 22 of the projection 14.

In order to modify the spacing between the wheels to accommodate each of the two types of gauges , several operations to achieve the objects of the invention will be briefly described below.

Changing the distance between the wheels is always carried out using stationary equipment located at the changing station.

This change is made continuously for each trolley as it passes through the stationary installation at a reduced speed of up to 20 km / h.

FIG. 13 diagrammatically illustrates the several elements, which form part of the stationary installation described below.

The end of the large gauge rail is shown at 23 and the end of the small gauge rail is shown at 24.

A sliding and centering guide rail is shown at 25. The locking and releasing means of the latch 16 is indicated at 26,
A guide for moving the rolling assembly 3 relative to the elastic member is shown at 27 and a rigid member is shown at 28.

Assuming that the trolley approaches the stationary installation via the larger gauge shown on the left side of FIG. 13, the gauge change process is as follows when the vehicle is moving.

In order for the rolling assembly 3 to move, it is necessary that the vehicle does not carry any load, which is due to the carriage being supported by the guide rails 25 , ie the load being released from the wheels. can get.

The unloading of the wheels in this way is carried out smoothly by lowering the rails 23 before the rails 23 are interrupted, at which moment, according to the diameter of the wheels, the carriages 29 and 30 shown in FIG. Sliding and centripetal runners attached to the oscillating arms of the frame contact corresponding sliding and centripetal rails 25 .

[0089] In particular, the sliding runner 30 at the time of initial contact with the sliding 及
The support runner 30B is mounted on the support member 30A via a spherical joint connection member (see FIG. 14) in order to obtain a larger support surface with the centripetal rail 25.

Support runner 30B and centripetal runner 30C
Is made of plastic material and is lubricated with water so it slides
Also, the coefficient of friction when sliding on the centripetal rail 25 is extremely small.

Lubrication with water has significant advantages over other lubricants because it does not cause adhesion or stains in any case.

[0092] Once the rolling assembly 3 load is removed, it is necessary to release the rolling assembly 3 from the dual locking of Ratchisutemu, therefore stationary equipment indicated at 26, to the longitudinal axis of the stationary equipment 26 It has four properly positioned unlocking-locking latch guides.

The cross section of the upper portion of the latch guide 26 is "T" shaped, and therefore the bridge 17 of the latch 16 is formed.
Because of its vertical shape 31 (see FIG. 4) , the latch 16 is lowered and at the center of the guide 26 where its shape is completely horizontal ,
The switch 16 is held in an unlocked state.

[0094] friction portion of the bridge 17 32 (FIG. 12 participants
Irradiation) also because it is made of plastic material, carried out in lubrication or water in order to obtain the advantages described above.

During the process of releasing the latch 16 , the guide 27
Guide 27 for correspondingly move the rolling assembly 3
Elastic portion 28 of the rim contacts the inner surface of the wheel.

The pressure applied to the wheels facilitates the unlocking operation of the latch 16 .

Prior to unlocking the latch 16 as described above, once the wheel load is released, the rolling assembly
3 drops a light s, the upper portion 10 of the Beari <br/> ring box 9 on the seat of the case of the oscillating arm is not supported, the inclination of the lower surface 21 guide 20 inclined in the aforementioned projections 14 Is placed on the surface.

Rolling assembly 3 of the truck which is the object of the present invention
As but advanced through the stationary equipment, the wheel is disengaged from contact with the resilient portion 28 of the movement guide 27 on the side that came through which the rigid portion or smaller on the opposite side of the movement guide 27 The portion on the side where the gauge 24 is located contacts.

While the wheel is in contact with this rigid portion, the latch 16 is unlocked and the wheel is transferred to the smaller gauge.

[0100] Then the wheel is in contact with the resilient portion 28 of the guide 27 for movement, the latch guide 26 pushes the latch 16 upwards, to lock the latches 16.

[0102] to facilitate locking the latch 16 by the pressure exerted by the elastic portion 28 of the movement guide 27.

Once the process of moving the rolling assembly 3 is complete, the rolling assembly 3 has the smaller gauge.
Locked at the position corresponding to the orbit .

[0103] Finally, since the rolling assembly 3 is still moving forward, on the direction of the trajectory of the gauge of the direction the wheel is small
There is a decisive moment when it is in contact with the rail and the sliding and centripetal runner 30 loses contact with the sliding and centripetal rail 25 , so that the truck is in the position to re- track this gauge.

The reverse process of moving from the smaller gauge trajectory to the larger gauge trajectory is performed as well.

It is not considered necessary to develop this description further in order for the person skilled in the art to understand the scope of the invention and the advantages obtained from it.

The materials, shapes, sizes and arrangements of the elements of the invention may vary, but this does not imply changes to the basics of the invention.

The terms used in the description herein should be considered as non-limiting.

[Brief description of drawings]

FIG. 1 is a side view of a bogie for a railway vehicle, which is a target of the present invention and has a variable distance between wheels.

FIG. 2 is a plan view of the object of the present invention shown in FIG.

FIG. 3 is a perspective view of one of the four rolling assemblies incorporated in the truck that is the subject of the present invention.

FIG. 4 is a side view of the cylindrical surface on which the corresponding end of the oscillating arm of the truck rests in its normal running position.

5 is a plan view of the object of the present invention shown in FIG.

FIG. 6 is a detailed cross-sectional view along the line AB of the subject matter of the present invention shown in FIGS. 4 and 5;

[7] 1 on the front, there is one in the rear, perspective view of a matching vertical flat surface and vertical <br/> direction perpendicular flat surface of the insert and.

8 is a sectional view of the subject of the invention shown in FIG. 7, corresponding to the positioning of the bearing box and the blocking element in the case of the vibrating arm of the suspension.

9 shows a detail of the subject of the invention shown in FIGS. 7 and 8, as seen along the line CD.

FIG. 10 is a front view of the housing case of the rolling assembly and the bearing as viewed in section.

[11] latches and perspective view of a piece of the bridge.

12 is a cross-sectional view of the subject of the invention shown in FIG.

FIG. 13 is a plan view of stationary equipment for changing the gauge.

FIG. 14 is a cross-sectional view of centripetal and sliding runners mounted on a sliding rail.

[Explanation of symbols]

1 Central Frame 2 Joint 3 Rolling Assembly 4 Helical Spring 5 Shock Absorber 6 Half Axle 7 Wheels 8 Brake Disc 9 Bearing Box 11 Flat Surface 12, 13 Insert 14 Protrusion 15 Stopping Member 16 Latch 17 Bridge 18 Spring 19 Safety Holding Device 20 Horizontal Direction guide 21 Bottom surface

Claims (10)

(57) [Claims] 1. Four corresponding joints (2)
Including a central frame (1) to which the vibrating arms of
In a bogie for rail cars with variable spacing between wheels,
A bearing ring box (9) for each of the rolling assemblies (3) is housed at each end of the arm, the bearing box (9) being movable laterally with respect to the track. What
Te, and so the wheel is positioned on each of two positions corresponding to two gauges, is placed on a portion opposite Harasenbane of each of said oscillating arm (4), the the lower end of the helical spring (4) is placed on the bottom portion of the central frame (1), the opposite end portions of each of said arms and the vertical direction of the shock absorber (5) is attached , The joint (2), the spiral spring (4), and
And said vibrating arm with said shock absorber (5)
A bogie for a railway vehicle, characterized in that each of the assembled bodies constitutes a main suspension of the rolling assembly (3) . 2. A four rolling assemblies on each carriage (3) is provided, each rolling assembly (3) half-axle which is integral to each other (6), wheels (7), and a brake disk ( 8)
And a corresponding bearing box (9) attached to the end of the half axle (6) , the bearing box (9) being at its upper part, the end of the oscillating arm of the trolley being normally Has a cylindrical surface (10) supported on it in the running position and distributing the load of the supporting surface, and a vibration box for accommodating the bearing box and the bearing box.
The elastic sheet is interposed between the case formed over arm
The seat is a bearing box and a vibrating arm.
Trolley according to claim 1, the wherein Tei Rukoto securely attached to one of the case. 3. A defined in the vertical position is the cylindrical surface between the bearing boxes and oscillating arm (10), the axis of the bearing box is automatically being centripetal in position, the bearing box It has front and back vertical flat surfaces (11) , which fit the vertical flat surfaces of the inserts (12), (13) carried on the vibrating arm, and the outer casing box of the bearing box. Be
Between the container <br/> housing the Allyn Gubouru i.e. bearings, occurs during traveling, laterally acting force transmitted to the oscillating arm of the bogie through the two bearing boxes of each half axle A trolley according to claim 2 , characterized in that it is provided with elastic bushings which provide some degree of freedom for the bearings so as to absorb axial alignment errors. 4. A located in a vertical plane of the front post of each bearing boxes, the integrated projection in a vertical plane (14), provided in the case of the oscillating arm, the rolling assembly (3)
Prevents the bearing box is moved laterally to constitute a lateral fixing element for mounting has been bearing box during the stop member for locking (15) or (15 ') and latch (16) 2 of each of the protrusions (14)
Pieces of the carriage according to claim 3, the side surface in the vertical direction, characterized in that only being mutually quarantined distance close to half the only thickness reduced difference gauge latch (16). 5. Latch (1) integral with the bridge (17)
6) is longitudinally adjusted by a lateral outer surface between the two vertical surfaces of the case of the vibrating arm, the insert (12),
Holds in place laterally when adjusting the vertical surface of (13), and the insert is integrated into the case of the vibrating arm.
The latch (16) moves only vertically,
The trolley according to claim 4 , wherein movement of the trolley in other directions is blocked by the stop member. 6. A spring (18) biases the latch (16).
Holds as to the state the spring (18), which is fixed to the latch (16) by greater compressive stress than plus the weight of the latch (16) to the dynamic forces which may occur in its running position held in, it prevents the descent of the latch (16)
And which trolley as claimed in claim 5, characterized that you have safety holding device (19) is added to the spring (18). 7. A bridge (17) integral with the latch is constructed such that its lower part can introduce a "T" shaped portion,
This "T" -shaped part belongs to the stationary equipment for changing the track gauge , said stationary equipment forces the bridge to move vertically, and the latch is the safety device, friction and spring (1
8) to be lowered overcome the force applied, the bridge in the center compartment latch opening guide is bridge <br/> di by fitting the inclined surface inside thereof exists on the latch opening guide stationary equipment is structured to act, inserts integrally attached to the vertical surface of the case of the oscillating arm (12), apart from that it is transverse stop member for (13) the latch (16), the bearing 7. A trolley according to claim 6 , characterized in that the face (11) of the box provides a vertical transverse surface on which the longitudinal adjustment is provided. 8. possess the Insert (13) <br/> lateral guide upper surface is inclined (20), the sliding surface between the bearing box of the lateral sliding of the rolling assemblies (3) The lower surface (21 ) of the protrusion (14) is similarly inclined so that the lower surface (21) is separated from the upper surface of the guide (20) during normal traveling.
And trolley as claimed in claim 7, characterized in that the same parallel. When 9. carriage to change the trajectory gauge is suspended, the bearing boxes beat later, the protrusions (14)
The lower surface (21) is placed on the guide (20) of being adapted to laterally move through this contact, the sliding surface of the guide (20) is inclined, the gauge when replacing wheels trolley according to claim 8 that might particles to interfere with lateral movement is characterized Rukoto is prevented from depositing in on its running. 10. Made synthetic metal material, and a slide positioned on the inclined surface of the projection (21) is mounted, when moving the rolling so as to position each of the two gauges assembly (3) thereof It is easy to move, and the brake for operating the wheels during this movement is the vertical surface of the protrusion (14).
The trolley according to any one of claims 1 to 9, which is attached to (22) .