FR2483872A1 - RAILWAY TREATING MACHINE EQUIPPED WITH A DEVICE FOR LOCKING THE SUSPENSIONS OF ITS AXLES - Google Patents

Abstract

THE LOCKING DEVICE INCLUDES FOR EACH AXLE BOX 2 A MOBILE SUPPORT 10 SLIDING IN A VERTICAL SLIDE 12 ATTACHED TO THE FRAME 5 OF THE MACHINE AND MOVED VERTICALLY BY THE ROD 110 OF A CYLINDER 11 AGAINST WHICH THIS MOBILE SUPPORT IS HELD SUPPORTED BY RETURN SPRINGS 13. THE MOBILE SUPPORT 10 INCLUDES A VERTICAL STOP 7, A TRANSVERSAL STOP 8 AND TWO LONGITUDINAL STOPPERS 9 COMING TO INTERCEPT DURING AND AT THE END OF THE CYLINDER 11 STROKE SUPPORT PARTS 3, 14, 15 THE AXLE BOX 2 TO IMMOBILIZE IT IN THREE DIRECTIONS, VERTICAL, TRANSVERSAL AND LONGITUDINAL IN RELATION TO THE CHASSIS 5. THIS DEVICE IS SUITABLE FOR MACHINES WHOSE TOOLS ARE GENERATORS OF REACTION FORCES CAPABLE OF MOVING THEIR CHASSIS IN RELATION TO THE RAILWAY IN THE THREE DIRECTIONS ABOVE.

Description

248,372

  Railway processing machine equipped with a device

  locking the suspensions of its axles.

  The subject of the present invention is a machine for processing railway tracks, such as, for example, not exclusively, a slip-rake bucking machine equipped with a device for blocking the suspensions of its axles intended to be put into action during working runs for remove any position variations from

  its chassis in relation to the way that could be caused no-

  especially by the ,, reaction forces of the way to work tools

of the machine.

  Railway tampers equipped with a suspension locking device are already known which comprises, in the vicinity of the end boxes and guard plates of their axles retractable movable stops mounted on fixed guides relative to their chassis and moved by drive members to intercept and immobilize the axle boxes relative to the guides in the three directions

  vertical, transverse and longitudinal.

  The tamping tools and the tools of vertical displacement of the track of these tampers being supported on their chassis, the blocking of the axle suspensions in the vertical direction is useful to transmit directly to the chassis the reactions due to the lifting forces developed by these tools. , to ensure the same depth of

  penetration of tamping tools into the ballast under each

  se or group of sleepers stuffed with each step of advance of the machine,

  as well as to avoid the chassis protrusions with each impact of penetration

  of these tools in the ballast which could influence the leveling of the track by feedback from the measuring device to which

are enslaved these tools.

  Locking axle suspensions in the transverse direction

  versal to the frame on which also support the tools of transverse displacement of the track is useful for transmitting

  directly to the chassis the reactions due to the shifting forces developed

  by these tools, and to avoid any lateral displacement of the chassis with respect to the track, at the right of each axle, which could here also influence the feedback shifting of the measuring device - 2 -

  to which are enslaved the transverse displacement tools.

  Finally, at each step in advance of the tamping machine, the locking of the suspensions of the axles in the longitudinal direction makes it possible to avoid shocks resulting from the retrofit of the displacement of the axles which occur during acceleration and braking, and allows better positioning of the stuffing tools on the part

  and other sleepers or groups of sleepers to stuff.

  The arrangement of the stops of the suspension blocking device

  varies according to the type of tamper.

  On tampers of an old type including axle boxes

  are guided in guard plates that are sufficiently rigid to

  to self-manage their immobilisation in the transverse directions

  dirty and longitudinal, the blocking of the suspensions in the vertical direction alone is achieved by crushing the suspension springs with a jack, until it bears against the chassis of the

  machine a stopper surmounting the axle box.

  This solution is not applicable on modern tampers to ensure quick displacement in running on the foot because on these machines the guard plates of the axles are prescribed flexible

  and with important games around the axle boxes in the di-

  transversal and longitudinal rections, to ensure a smooth

  the axle in these two directions and an elastic response

  than transverse shocks. On these tampers, the blocking of

  pensions in the vertical and transverse directions is obtained by two stops integral with a pivoting support in a vertical plane

  transverse above each axle box, this support being

  abutment on a bearing integral with the frame of the machine. The pivoting of this support is controlled by a first cylinder. During this pivoting

  one of the two stops carried by this support comes to press on the box

  axle and move it away from the chassis, down to

  part of the load of the springs, until immobilizing it at the end of

  this first cylinder; at this moment, the other stop comes in lateral contact against the rim of the wheel of the axle or, in another embodiment, against a support piece fixed to the axle box. The locking in the longitudinal direction is obtained by the action of a jsecond jack placed in abutment on a piece fixed to the axle box to immobilize the latter against one of the two sides-of the vertical slide of the plate of in another known embodiment, by means of a pivoting stirrup which intercepts and immobilizes in this direction the bridge of the trans-

mission of the motorized axle.

  On two-axle tampers, when the wheelbase of the latter and the rigidity of the chassis are too great to ensure, once the suspensions are blocked, the support of the four wheels on a section of track having variations of transverse inclination. from one axle to another during the work advance, the suspension lock device of one of these axles, preferably the front axle, ie the axle of an axle of untreated track, is the subject of two special fixtures to ensure when

even this support.

  In one of these assemblies, this locking device is mounted in connection not with the frame of the machine, but with a frame

  intermediary articulated transversely and on which is mounted the

  sieu. Both ends of this intermediate frame are connected to the frame of the machine by two additional cylinders to an effect of which

  the rooms are connected by a pipe allowing free

  the axle during each step advance. during

  work this pipe is polished to block the frame at the incline

reached.

  1Y 25 In the other mounting of the suspension blocking device, it is the two verticaf lock cylinders suspensions of the axle in question that are connected by a pipe of this kind to obtain

  the same effects, without the intermediary of an articulated frame.

  These various devices for blocking suspensions of

  its known satisfactory but require the installation of at least two independent mechanisms and / or involve the axle guard plates to ensure the immobilization of

  each axle box in three directions.

  The object of the invention is to avoid these disadvantages in order to

  greater reliability in the suspen- sion locking devices 4 - railway processing machines and mainly

  those of certain recent two-axle tampers whose suspen-

  are as flexible as possible to enable

  rapid transit jets whose chassis is built according to the criteria of maximum rigidity to cash the efforts always

  larger demands on track displacement tools.

  For this purpose, the railway processing machine according to the invention is characterized in that the vertical, transverse and longitudinal immobilization stops of each axle box of its suspension locking device are mounted rigidly on a single mobile common support driven by a single drive member and mounted on a single independent guide of the axle guard plates

  v 'and rigidly attached to its chassis.

  In this way, a single mechanism is sufficient to ensure the three-way immobilization of each axle box, and the guard plates of the latter are no longer used to participate in this immobilization. On the other hand, the single guide carrying and conditioning the displacement of the common support of the vertical, transverse and longitudinal stops of each axle box can be designed as rigid as desired depending on the efforts to be cashed, since this guide is

  independent of the guard plates in question.

  The appended drawing represents, by way of example, an embodiment of the device which characterizes the object of the invention, as well as

  than a variant of a constructive detail.

  Figure 1 is an elevational view of this device.

  FIG. 2 is a partial left view along the axis of FIG.

section 1 - I of FIG.

  FIG. 3 is a partial top view along the axis of

Section II - II of Figure 1.

  Figure 4 is a representative diagram of the variant.

  The suspension lock device shown is shown

  installed on an axle 1 of the usual type allowing

  on the track and whose axle boxes 2 are surmounted by a

  stirrup 3 in which the leaf springs 4 of its suspension are clamped

  It is connected to the frame 5 of a railroad processing machine which, for the purpose of fixing ideas, can be considered as a two-axle tamping-grader between which are installed its vertical reaction force generating tools. ,

  transverse and longitudinal during their work.

  The vertical, transverse and longitudinal elastic displacements of the axle 1 relative to the chassis 5 are conditioned and

  limited to the right of each axle box 2 and in a traditional way

  the by a flexible guard plate 6.

  The suspension locking device comprises, installed in the vicinity of each axle box 2, a movable common support 10 driven by a motor member 11 and mounted on a guide 12 independent of the guard plate 6 and rigidly fixed to the frame 5, this support having a vertical stop 7, a transverse stop 8 and two

longitudinal stops 9.

  The guide 12 is constituted by two vertical uprights 120 arranged

  on either side of the axle box 2 in the longitudinal direction

  5. The inner edges facing each other of these two uprights form a vertical slideway in which the mobile support 10 slides. These two uprights are fixed rigidly, for example by welding, against the outer wall of the longitudinal spar.

chassis 5.

  The support 10 consists of two square plates: one

  vertical plate forming the transverse stop 8 and a horizontal plate

  The vertical plate 8 is bordered by two vertical slides mounted in engagement with the two edges of the vertical

  12 and forming the longitudinal stops 9.

  The drive member 11 is a hydraulic cylinder with an effect fixed in a vertical position on the side member 50 of the frame 5 and against the

  rod 110 of its piston is mounted in support of the vertical stop 7 of the sup-

  port 10. This support is provided by two springs 13 linking

  said support to said edge spar.

  In the service position shown, the piston of the cylinder 11 is at the end of its travel. The vertical abutment 7 of the mobile support 10 bears on the stirrup 3 enclosing the suspension springs 4 under a thrust of the jack sufficient to absorb, for example, between a third - 6 -

  and half of their normal load due to the weight of the machine.

  This stirrup 3 being integral with the axle box 2, it is located

  thus immobilized in the vertical direction. Also in this

  end position of the cylinder 11, the transverse stop 8 of the sup-

  mobile port 10 is supported laterally against a support member 14 fixed to the box 2 of the axle and the two longitudinal stops 9 of said support enclose a second support piece 15 also attached to said box 2. The box 2 is thus also immobilized in the transverse and longitudinal directions, the transversal immobilization in both directions being obtained by the concurrence of the

  transverse stop 8 of the device for blocking the suspension of the

  be box 2 of the same axle, not shown because identical.

  At the release of the pressure of the cylinder 11, the assembly box 2 -

  mobile support 10 goes up until the suspension springs 4

  resume their normal charge. From this moment the mobile support 10

  continue to rise, under the effect of the return springs 13, until the end

  stroke of the cylinder 11, releasing its stops 7, 8, and 9 respectively.

  stirrup 3 and support parts 14 and 15 fixed to the box 2,

  releasing it from immobilization in the three vertical directions

  tical, transverse and longitudinal, within the limits allowed by

  the games existing between it and the guard plate 6.

  The device described is applicable to the two axles of a bunker.

  The wheelbase has a sufficiently short wheelbase and / or a sufficiently elastic chassis to ensure, with the suspensions locked, the support of its four wheels on a section of track having variations of inclination.

  transverse from one axle to another during the advance in work.

  On a wheelbarrow with a long wheelbase and / or frame

  In order to ensure this support, the two cylinders II of the blocking device

  suspensions of one of the two axles, preferably the front axle, can be provided, as shown schematically in FIG. 4, with a larger stroke and with feed lines 16 connected to the

  feed circuit 17 through a two-position electro-valve 8

  tions and spring recall with the effect of linking the Chambers of

  these two cylinders in the represented position of the bushel of this van-

  ne, and to close these two ducts 16 in the other position. From the

  you, losing the advance of a work step, the feed ducts 16

  The two cylinders 11 may be connected to allow the free passage of the fluid under pressure from a chamber of a jack to that of

  the other, thus allowing the free vertical pivoting of the axle

  equipped with this special assembly relative to the chassis of the machine which is also in support stuck on the other axle. During work

  in stationing the shutter of the pipes 16 makes it possible to block the

  sieu at the inclination reached at the end of the work step.

  Danis this special assembly, the height of the chamber of the cylinders is determined so that at the chosen service pressure the pistons

  these cylinders are kept far enough away from their end of

  down, to allow the necessary pivoting of the axle.

  Of course, the shapes of the structures of the device represent

  will be adapted to the type of suspension to be blocked, which may for example

  ple have coil springs instead of leaf springs.

  The mobility of the common support 10 of the vertical, transverse and longitudinal immobilization stops of the axle box 2 can

  to be conceived differently. For example this support can be mounted pi-

  voting in a transverse vertical plane on a console making deguide office setin chassis 5 above the wheel, the stops coming to intercept the corresponding bearing parts of the axle box 2

  finally of course of the pivoting of said support. When space. free la-

  side of each axle box is sufficient, the

  The stops can be slidably mounted in a horizontal guide, the stops coming to intercept at the end of the horizontal translation travel.

  the corresponding bearing parts of the axle box.

2'183872 - 8-

Claims (4)

  1. Railway processing machine equipped with a device for blocking the suspensions of its axles (1) comprising, in the vicinity of the axle boxes (2) and guard plates (6) thereof, retractable movable stops mounted on fixed guides relative to its chassis (5) and driven by driving members to intercept and immobilize said axle boxes relative to said   guides in the three vertical, transverse and longitudinal directions   during the course of work, characterized in that   vertical (7), lateral (8) and longitudinal (9) immobilization stages of each axle box are rigidly mounted on a single movable common support (10) driven by a single drive member (11) and mounted in engagement   on a single guide (12) independent of the guard plate and fixed perfectly to his chassis.   2. Machine according to claim 1, characterized in that the guide of the common support stops is constituted by a vertical slide (12) wherein said common support (10) is slidably mounted.   3. Machine according to claims 1 and 2, characterized in that   that the vertical slide (12) consists of two vertical uprights   (120), in that the movable support (10) consists of a vertical plate   wedge (8) bordered by two sliders (9) engaged with the two uprights of the slide and a horizontal plate (7), in that this vertical plate, these two sliders and this horizontal plate form   transverse stop, longitudinal stops and vertical stop   of the axle box (2), in that the movable support is moved   vertically by a single-acting hydraulic cylinder (11) whose   ge (110) of the piston serves to support the horizontal plate (7) of the movable support resumed by means of springs (13) connecting said movable support to the frame (5) of the machine, and in that the box of axle includes support pieces (3, 14, 15) to be intercepted by the stops of the mobile support.   4. Machine according to claim 3, characterized in that the positions of the transverse stops (8) and longitudinal (9) of the support   (10) are adjusted to intercept the corresponding bearings   dantes (14, 15) of the axle box (2) at the stroke end of the cylinder hydraulic (11).