FR2587384A1 - DEVICE FOR LATERAL DEPORTATION OF A SHOVEL CONSOLE - Google Patents

Abstract

THE INVENTION RELATES TO A DEVICE FOR LATERAL DEPORTING THE TOOL OF AN EXCAVATOR FROM THE CARRIER OR CARRIER VEHICLE. THE CONSOLE 30 WHICH CARRIES, IN AN ARTICULATED MANNER, THE ARROW 50 AND THE TOOL 56 IS ITSELF RETURNED BY TWO ARTICULATED PARALLELOGRAM ARMS 22, 24 WITH VERTICAL AXES 26, 28, 32, 34. MEANS SUCH AS CYLINDERS 38 CAN MOVE IT IN RELATION TO THE CARRIER WITHOUT MODIFYING ITS ORIENTATION, BETWEEN TWO EXTREME DEPOSIT POSITIONS OF WHICH AT LEAST ONE IS IN THE VICINITY OF THE LATERAL OVERALL LIMIT OF THE UNIT, PREFERABLY IN THE EXTENSION OF ONE OF ITS TRACES. SWITCHING FROM ONE POSITION TO ANOTHER IS DONE BY CONTROL OF CYLINDERS OR THE SAME, WHEREAS TIME-SAVING AND SIMPLIFICATION, ESPECIALLY TO GO FROM A TRANSPORT POSITION TO A WORKING POSITION.

Description

The present invention relates to a device for lateral offset of a

  console on a shovel or on the turret of a self-propelled excavator, console on

  which a column rotatable about a vertical axis

  tical is mounted as support for the boom which can

around a horizontal axis.

  Excavator consoles are known which are mounted fixed or movable laterally on the chassis of a mounted excavator which is itself mounted fixed or replaceable on a wheeled or crawler vehicle. On the shovel console is mounted a swivel column which can pivot ordinarily 180 about a vertical axis by means of a swivel mechanism and carries the boom with

  working cylinders and with the excavation tool.

  Shovel consoles mounted fixed on the frame

  sis are usually in the middle relative to

  the longitudinal axis of the vehicle and then agree

  usually for digging excavations or performing other types of earthworks in the extension of the longitudinal axis of the vehicle. Excavations located outside the longitudinal axis of the vehicle are made with excavated shovels or self-propelled excavators which

  have consoles that can be moved laterally.

  These consoles, in known embodiments, are sliding carriages whose lateral displacement, in the most often hard work, requires manipulations not always simple to perform. The disadvantage of this is that a sliding carriage which, because of the fouling still to be considered, must not be tightly adjusted relative to its guide rail, that is to say, needs a lot of play.

  for his movement, must be blocked for the function-

  the shovel. It is also disadvantageous that for moving the carriage, it is necessary to lay the arm

  shovel on the ground or support it, which is not possible

  only if the place is sufficient. Otherwise, costly automatic cart controls that tend to

present a danger of jamming.

  Finally, we know excavated shovels whose console is an intermediate arrow mounted around a

  vertical axis on the chassis carried. This intermediate arrow

  can be considered as an oscillating arm, so that with this construction, at one end of this

  arm is the swivel column and at its other end

  mity is the pivot bearing provided in the frame carried. This shovel system differs from other types considered to be prior art in that the console, for the realization of a lateral offset, is not moved parallel to itself on a carriage, but rotated with the intermediate arrow, so that in the extreme positions, the arrow can no longer, with

  a total usual rotational range of 180, reaching

  necessary or interesting orientations for certain works, unless the field of rotation of the spire has been further enlarged by means of a mechanism

expensive rotation.

  The purpose of the invention is to simplify a device

  tif side console offset of the type indicated at the beginning with regard to its maneuver and its structure and improve it so that the driver of the shovel has no difficulty in leaving the console in the middle position in the extension of the longitudinal axis of the vehicle for about 90% of the work that is presented, to move it quickly aside for work with lateral offset, and finally to put it also quickly in an extreme position of offset when the assembly consisting of the arrow, the bucket arm and the excavating tool must, for the transport state of the excavator, be folded transversely and folded in front of the turret of a self-propelled excavator or in front of the chassis

carried by a shovel.

  The invention achieves this goal thanks to the fact that the console is hingedly supported by the frame of the shovel, by two parallelogram arms placed side by side.

  side and is, by means of a command, moved

  gable parallel to itself between positions

  extremes of lateral offset and lockable in any posi-

  intermediate position, and that the console, at least in an extreme offset position, is in the area of the lateral limit of the excavator or the extension of that

limit.

  With this relatively simple system and especially easy to maneuver at any time, a rotation of the parallelogram arms of less than 180 makes it possible to move the console parallel to itself on a circular arc and to shift it laterally without changing its parallel orientation to the longitudinal axis of the vehicle or the

  turret. With a symmetrical realization, the two posi-

  extremes of lateral offset can correspond to those of a sliding carriage on a guide frame without having to bear the disadvantages of guiding the carriage, namely a clearance required by operation, a special locking device and the support space for laying the arm of the shovel, necessary to push towards

the side the sliding carriage.

  The shovel driver who, with the known console placed on a sliding carriage, gives up, for reasons of complication of the maneuver, to implement

  middle position the console which is still in a posi-

  extreme lateral offset corresponding to the

  tion movement, no longer feels these obstacles with the lateral offset device of the invention, because it is sufficient to start and stop an automatic control of lateral offset movements. This greatly increases the efficiency of the shovel, because the optimal position, median or offset laterally, the console can be chosen for any type of work, and at the beginning or end of a job, the driver of the shovel

  no longer has to spend a lot of time

  badly in front of the shovel, the set of folded arrow, for

  to place oneself in the conditions of displacement.

  In one embodiment of the invention, the parallelogram arms may have a range of

  less than 180 and, because of their possible

  pivoting ability and / or their length, be arranged 2 to allow to wait at least an extreme lateral offset position of the console, an arrow from the console in the longitudinal direction can then work with an excavation tool to pretty much in the

  prolongation of a trace of the carrier of an automobile shovel

  trice or the carrier vehicle of the chassis Due to the limitation of the pivot range of the arms, one or more simple hydraulic cylinders can be used as control thereof. In the case of excavators of common dimensions, the swivel range can be for example about 120, value for which if necessary only one hydraulic cylinder is sufficient. The position

  extreme offset of the console is usually

  so that when the boom, with an excavating tool, is oriented in the longitudinal direction, the outer edge of the tool ends laterally substantially in the extension of the outer edge of the carrier or the frame carried. It is also possible

  in the context of the invention to exclude further lateral

  outward position the extreme offset position of the console by increasing the swivel range or

extending the arms.

  According to another characteristic of the invention, it is proposed for the lateral offset device that the lateral distance of the two pivot axes of the parallelogram bars on the console and on the supported frame is sufficiently large to help the rigidity of the system. 'joint. It may be good if the lateral distance of the two pivot axes of the arms on the console is not less than about one-third of the

length of an arm.

  According to another characteristic, because of the distance of the vertical axes of articulation of the arms to the worn frame and the console and the limitation of the lateral angle of pivoting, the distance of the arms, even in the extreme position of offset, remains sufficient for the passage between them of hydraulic hoses for feeding the cylinders of the boom assembly. Of

  this way, the hydraulic lines are effective-

  protected from the effects of the shovel's hard work. The arms may consist of a buckling-resistant box construction whose height is

  definitely greater than the width.

  In a preferred embodiment of the

  the console also has a frame resistant to buckling and on which are provided upper and lower fasteners for mounting the pivoting column on the one hand and for the mounting of the arms on the other hand, a mechanism of pivoting for the column being provided on the console above the fasteners. The wide console, which is good for effectively supporting and absorbing the working forces when the boom is oriented laterally, allows at the same time that the console frame has between its upper and lower ends an opening for the passage of hydraulic hoses going to the arrow set. In the case of a self-propelled excavator, the hinge system of the console provided by the invention can be placed on a suitable frame on the front side of the turret next to the cabin, possibly offset from the longitudinal axis of the vehicle. the turret, so that it suffices a small lateral offset with an arm pivoting range of about 60 to bring the console, in a position of extreme offset, approximately on the longitudinal axis of the turret, while the other extreme offset position is used primarily to fold the boom assembly transversely in front of the turret for the state of transport of the excavator. Other advantageous forms of construction of the lateral offset device, for example with greater span of pivoting and / or arms placed in the middle, are naturally conceivable.

  in the context of the invention for a self-propelled excavator.

  It is thus possible to excavate laterally with such a self-propelled excavator, independently of the particular articulation of the console, by rotation of the turret until the pivoting column has

  the necessary lateral offset with respect to the longitudinal axis

tudinal of the wearer.

  Other advantages and characteristics of the

  come out of the claims and the descrip-

  following examples of implementation illustrated by

  the drawings. The different characteristics of the

  may be individually or in full

  another combination of the additional embodiments

  of the invention. In the drawings: Figure 1 is a side view of a shovel carried with a carriage shown partially cut away; Figure 2 is a top view of the mounted excavator shown in Figure 1; FIG. 3 is a view from above similar to that of FIG. 2 with carrier vehicle of the chassis

  carried in addition and with the console in a posi-

  extreme lateral offset; FIG. 4 is a diagrammatic plan view of a self-propelled excavator provided with a lateral offset device, with which the console is in the main excavation position, while FIG. 5 is a top view similar to that of FIG. Figure 4 shows the console in the other extreme offset position, in which the set of

  arrow is housed approximately within the circle of

loppe of the turret.

  In the embodiment shown in Figures 1, 2 and 3, the object of the invention is carried out on a scoop. This comprises a supported frame 10 which consists essentially of vertical elements 12, support legs 14 mounted movably therein and horizontal elements 16. On the back of this chassis worn are applied hooking tabs upper and lower 18 by which the shovel is attached, for example by pins, as shown in FIG. 3,

to a carrier vehicle.

  On the back of each of the horizontal elements above

  6 is a reinforcement element 20 which supports the axes 26, 28, around which

  pivot two arms 22, 24 preferably of the same length.

  The arms 22, 24 have a height (Figure 1) much larger than their width (Figures 2, 3). They

  are conveniently constituted of a construction in

  its resistance to buckling and are at their front end, each articulated by a vertical axis 32 or 34a ume console 30. The distance between the vertical axes 26 and 28 is equal to the distance between the axes 32 and 34 of the console, so that the two arms 22, 24, in all the orientations they can take, form a parallelogram with the console 30. The arms 22, 24 pass through the opening of the frame 10 carried and each carry at their front end legs fastening side 36 in which is attached an eye of the

  piston rod of a cylinder 38. As shown in FIGS.

  2 and 3, the end of each hydraulic cylinder 38 is connected by a vertical axis 40 to the reinforcing element

  rear 20 upper frame 10 worn.

  The console 30, which can also be

  of a box-type construction, includes a

  that upper support 42 and a lower support plate

  44 at the front end of which is pivotally

  aunt about a vertical axis 46 a column 48 which supports the boom 50 and the boom cylinder 52. On the boom are conventionally mounted an articulated arm or bucket arm 54 and an excavation tool 56 with their cylinders

control.

  For the lateral pivoting of the column 48, there is provided a pivoting mechanism 58 mounted for example on the top of the bracket 30 in a support frame 60 and which, in this case, consists of two hydraulic cylinders mounted in an articulated manner and whose end of the piston rod attacks an axis 61 or 62 of the column

  48. In FIG. 2, the console 30 is shown in FIG.

  in its median position coinciding with the longitudinal axis

  tudinal of the vehicle and the excavator, from which one can rotate the excavation tool 56 with the set of arrow of about 90 on each side for example to deposit on one side or the other excavated material taken in the middle. Figure 3 shows the console 30 in a position

  extreme lateral offset in which it is approximately

  in the extension of one of the traces of the carrier vehicle. This extreme position is determined for example so that when the boom 50 is placed parallel to the longitudinal axis of the vehicle, it is possible with the tool 56 to excavate laterally approximately to the outer limit of the trace of the vehicle or the lateral limit of the worn chassis. An even greater lateral offset could be achieved by lengthening the arms 22, 24 or by increasing the pivoting range, for example by articulating the control cylinders 38 otherwise or at another location or by raising the arms 22, 24 further forward. on the worn chassis. We see further in Figure 3

  that the distance between axes 26, 28 or 32, 34 is suf-

  to leave between the arms 22, 24, even in the extreme offset position, room for the passage of hydraulic lines (not shown) from a hydraulic system on the carrier vehicle to the working cylinders of the assembly arrow crossing

  the supported frame 10 and passing through a longitudinal opening

  dinal (not shown) of the console frame. We see

  in Figure 1 that the cylinders 38 controlling the pivot-

  arms 22, 24 are mounted at their ends in forked appendages which leave some of the element

  reinforcement 20 of the carried chassis and the others of the

  miti before the arms. The arms 22, 24, for their part, can

  may be mounted on continuous axes between the reinforcing elements 20 and between the upper support plates 42

  and lower 44 of the console or on higher axes

  and lower axles such as those shown for example for attaching the swivel column 48 to the

figure 1.

  In FIG. 3, the boom assembly 50, 54, 56, folded as in FIG. 1, is in a folded position transversely in front of the carried chassis which corresponds to the road transport position of the

  shovel when it is mounted on a vehicle.

  The same folded state could be achieved with the rabatte-

  extremely symmetrical, the console 30 is then in position \ deport side on the right side of the frame worn. The hydraulic cylinders 38 rotate the arms 22, 24 and block them in any orientation. When excavating transversely to the longitudinal axis

  of the vehicle or turret, it is possible to use the

  arms 22, 24 to perform an additional movement.

excavation.

  The exemplary embodiment shown in FIGS. 4 and 5 shows the application of the articulation

  of the console provided by the invention to an excavator

  trice. A turret 64 rotatable 360 about a vertical axis 65 on a crawler carrier 66 is provided at its front end, on a side near the car 72 and the longitudinal axis 74, with a frame.

  which, as in the exemplary embodiment

  1 to 3, supports vertical pins 26, 28 for the pivotal mounting of two parallel arms 22, 24 and further a hinge attachment 40 for a control cylinder 70 which extends in this case between the two arms 22, 24 and is articulated to an inner fastener 76 of the arm 24. In the embodiment shown, the pivot range of the arms 22, 24 between the extreme offset positions of the console 30

  represented in FIGS. 4 and 5 is about 60.

  In the psi-tion - extreme-shown in Figure 4, the console 30 is approximately on the longitudinal axis of the turret, so that the driver of the excavator can optimally observe the boom assembly and

the excavation tool.

  In the other extreme position of offset, shown in Figure 5, the console 30 is sufficiently spaced from the axis so that the folded boom assembly, folded laterally transversely in front of the turret, remains within the lateral limits of the bearer and

  also within the envelope circle 78 deter-

  undermined by the back of the turret. The rest of the construction of the console and swivel column is essentially the same as in Figures 1 and 3. For reasons of clarity, the swivel mechanism of the

  column mounted on the console is not drawn.

  The position of the console and the arrow shown in solid lines in Figure 4 is used

  for excavations along the longitudinal axis

  tudinal of the vehicle, which represents at least 90% of the work, while the position of the console shown in broken lines is used for excavations offset laterally on the left side of the carrier and particularly for the folded position shown in Figure 5, with which the boom assembly remains within the contours of the vehicle or turret,

  at least can be brought within the circle of

loppe 78.

Claims (14)

  1. Device for lateral offset of a console   on a shovel or on the turret of a shovel   a console (30) on which a column (48) can   rotating around a vertical axis is mounted as support for the boom rotatable about a horizontal axis, characterized in that the bracket (30) is hingedly supported by the frame of the shovel by two parallelogram arms ( 22, 24) placed side by side   side and is, by means of a command, moved   parallel to itself between positions   extremes of lateral offset and lockable in any posi-   intermediary, and in that the console, at least   in a position of extreme distance, is in the   the lateral limit of the excavator or the extension this limit.   2. Lateral offset device according to the claim   1, characterized in that the parallel arms   gram (22, 24) have a pivoting range of less than 1800 and, because of their pivotability and / or length, are arranged to allow at least one extreme lateral offset position of the bracket (30) to be maintained. ), an arrow (50) from the console in the longitudinal direction can then work with an excavation tool roughly in the extension of a trace of the carrier (66) of a shovel   self-propelled vehicle or the carrier vehicle of the chassis (10).   3. Lateral offset device according to one   claims 1 and 2, characterized in that in the posi-   extreme lateral offset of the console (30), the set of arrow folded transversely in front of the supported frame (10) or in front of the turret (64) remains   inside the lateral limits of the wearer.   4. Lateral offset device according to one of   preceding claims, characterized in that the   lateral distance of the two pivot axes (32, 34)   parallelogram arms on the console (30) is suf-   big enough to help the rigidity of the system hinge of the console.   5. Lateral offset device according to Claim 4, characterized in that the lateral distance between the two pivot axes (26, 28) of the arms on the supported frame (10) is not less than approximately third of the length of an arm.   6. Lateral offset device according to one of   preceding claims, characterized in that the   arms (22, 24) consist of a construction in   its buckling resistant and its height is clear- greater than the width.   7. Lateral offset device according to one of   preceding claims, characterized in that   due to the distance of the vertical axes of articulation of the arms (22, 24) to the supported frame (10) and to the console   (30) and the limitation of the lateral angle of   the lateral distance of the arms, even in the posi-   extreme distance, remains sufficient for the passage   between them hydraulic hoses for feeding   the jacks of the boom assembly (50 to 56).   8. Lateral offset device according to one of   preceding claims, characterized in that the   arms (22, 24) pass through an opening formed by upper, lower and lateral members (12 to 16) of the supported frame and are mounted on pivot pins which are mounted on the supported frame (10) behind   opening in horizontal support members (20).   9. Lateral offset device according to one of   preceding claims, characterized in that at each   arm (22, 24) is fixed externally an attachment eye (36) which is driven by a hydraulic cylinder (38) articulated with the shovel.   10. Lateral offset device according to one of   preceding claims, characterized in that, as   arm control, is provided a single hydraulic cylinder (70) which is placed between the arms- (22, 24) and attacks an inner attachment eye of an arm. 11. Lateral offset device according to one of   preceding claims, characterized in that it is   provided at least one extreme offset position of the console in which the arrow assembly (50 to 56),   folded transversely in front of the turret or transverse   dirty in front of the worn chassis, stay inside   lateral limits of the wearer or the frame worn.   12. Lateral offset device according to one of   preceding claims, characterized in that the   console (30) has a frame resistant to buckling and   on which are provided upper and lower fasteners   for mounting the pivoting column (48) on the one hand and for mounting the parallelogram arms (22, 24) on the other hand, a pivoting mechanism (58) for the column being mounted on the console, above the fasteners.   13. Lateral offset device according to the claim   12, characterized in that the frame of the console   (30) contains between its upper and lower ends   an opening for the passage of hydraulic hoses.   liques going to the arrow set.   14. Lateral offset device according to one of   claims 12 and 13, characterized in that the   for mounting the swivel column (48) and the arms (22, 24) are mounted on upper and lower bracket plates (42, 44) of the bracket (30) which   form parts of the console frame.