FR2475175A1 - TRAINING ASSEMBLY FOR MECHANICAL AND SIMILAR EXCAVATORS - Google Patents

Abstract

DRIVE UNIT FOR PERFORMING A WORK FUNCTION ON AN EARTH MOVING MACHINE WHOSE FRAME IS SUBJECT, IN NORMAL SERVICE, TO LOADS WHICH CAUSE ITS DEFORMATION. THE DRIVE ASSEMBLY INCLUDES A DRIVE UNIT 74 FIXED TO THE CHASSIS 55, A DRIVEN ORGAN 73 CARRIED BY THE CHASSIS, AT LEAST ONE GEAR TRAIN 76, 77 AND FLEXIBLE COUPLING MEANS 75, 101 WHICH RESPECTIVELY CONNECT THE DRIVE APPARATUS 74 TO THE GEAR TRAIN 76 AND THE GEAR TRAIN 77 TO THE DRIVEN GEAR 73 SO THAT THE GEAR TRAIN (s) ARE INSULATED FROM THE DEFORMATIONS OF THE MACHINE. APPLICATION TO MECHANICAL SHOVELS.

Description

The present invention relates to a set of

  trapping and it relates more particularly to a training set intended to be mounted on a

  machine to perform a job function. The pre-

  More specifically, this invention is directed to a driving assembly for a shovel, which assembly is adapted to perform a work function, such as driving, lifting, pivoting and propelling.

  The big mechanical mine shovels, to serve

  Serious defects of the type described in US Pat. Nos. 3,501,034 and 3,648,863 are generally provided with driving, lifting, pivoting and propelling devices which are actuated to perform the various machine work functions. . Each of

  these devices essentially comprise a set of

  Trailer mounted on the machine and operatively connected to an active element of the machine. In the case

  crab-type driving devices, the whole

  The drive cable is operatively connected to a cable drum for unwinding and winding the driving cable. In a lifting device of the type in

  cable, the drive unit is connected in such a way

  reoperating to a lifting drum to unroll and

  roll the hoisting rope. In the case of a turning or turning device, the drive assembly is usually mounted on a rotary upper frame

  and has a downward-extending shaft that

  a gear that meshes with a mounted ring gear

  on the lower frame of the machine. In a provision

  typical propulsion type of the crawler type, the whole

  drive is operably connected to a motor gondola rotatably mounted in a track frame and connected to a traction track in a

to enter it.

  In each application, the training set

  serving a particular work function.

  The link is mounted on the machine and is generally constituted by drive means, such as an electric motor or a hydraulic motor, by means

  such as a drum, a rack, a casement

  rotary shaft or a gypsy engine and a gear train

  which links together the drive means and the means entrained to ensure the transmission of the

torque and speed reduction.

  During normal operation of a large heavy duty mine shovel, for example when

  the machine pushes in or withdraws its bucket when it

  raises or lowers its bucket, when it pivots its upper frame or when the entire machine is powered, the machine is subjected to a multitude of tensile loads, compression, bending and twisting, of various sizes, which are transmitted to the upper and lower chassis of the machine. Such loads cause deformations of the upper and lower chassis of the machine on which the drive assemblies for the driving devices,

  lifting, pivoting and propulsion are mounted.

  Inevitably, such chassis deformations are applied to the leading and conducting elements of such assemblies and result in misalignment of their components.

  gear trains. Such misalignments produced

  have a non-uniform bearing contact with the engraft teeth.

  swimming that results in inefficient torque transmission, excessive tooth wear, and frequently tooth breakage. It was found that it was desirable to

  realize training sets mounted on

  chines of the type described which are capable of withstanding the detrimental effects of the loads to which the 247511t machines are subjected during normal operating conditions.

  Therefore, the present invention has, in particular,

  for the following purposes: - to achieve a perfect training

  for a device mounted on a machine for the purpose of

to assign a work function;

  - to achieve a perfect training package

  for a device mounted on a machine to perform

  performing a work function, this machine being subjected to various loads applied during normal operating conditions;

  - to make a training set

  designed for a device mounted on a machine for

  perform a job function that is able to

  to mitigate the harmful effects of loads applied to the machine during normal operating conditions;

  - to achieve a perfect training package

  for a device mounted on a shovel to perform a work function;

  - to achieve a perfect driving device

used for a digger;

  - to carry out a training set of dis-

  positive driving force for a mechanical shovel

than;

  - to realize an improved lifting device

born for a digger;

  - to carry out a training set of dis-

  positive lifting device for a digger;

  - to carry out a training set of dis-

  positive pivoting position for a mechanical excavator

than;

  - to carry out a training set of dis-

  positive propulsion system for a mechanical excavator

247S 175

lunch;

  - to make a training set

  designed for a mechanical shovel that includes a group of gear trains to ensure torque transmission and speed reduction, in which the efficiency of the torque transmission is increased and the wear and tear of the teeth are increased. reduced to a minimum; - to make a training set for

  a mechanical shovel that includes a group of trains of

  in which the misalignment of the meshes

  of the group of gear trains normally provoked

  that the deformations of the frame of the machine is reduced to a minimum value if not completely removed; - to create a new training set

  for a mechanical shovel that is of a simple construction

  is relatively inexpensive to manufacture and is rela-

  very easy to maintain and repair.

  Other objects and advantages of the present invention

  will be clearer to those skilled in the art to which the present invention relates

  upon reading the following description, considered:

  in the light of the accompanying drawings in which: FIG. 1 is a side elevational view of a

  excavator which has several modes of

  of the present invention; FIG. 2 is a plan view from above, at most

  large scale, a higher platform of the machine

  shown in FIG. 1, this view showing the

  the various training sets carried by this platform; FIG. 3 is a rear view, in elevation, at

  larger scale, the training package of the dis-

  positive depression shown in FIG. 1; FIG. 4 is a sectional view, on a larger scale, taken along line 4-4 of FIG. 1; FIG. 5 is a rear view, in elevation, of another driving device driving assembly

  implementing the invention, shown in sectional view

  part; FIG. 6 is a rear view, in elevation, of

  core another drive device drive set

  darkly implementing the invention, shown with partial section;

  FIG. 7 is a rear view, in elevation, of

  core another drive device drive set

  darkly implementing the invention, shown with partial section; FIG. 8 is a sectional view, on a larger scale, along the line 88 of FIG. 1; Fig 9 is a rear view, in elevation, of another hoist drive assembly embodying the present invention, shown partially cutaway; FIG. 10 is a sectional view, on a larger scale, taken along line 10-10 of FIG. 2; and FIG. 11 is a sectional view, to larger

  scale, along the line 11-11 of FIG. 1.

  In Figs. 1 and 2 to which reference will be made, there is shown a shovel that uses several

  embodiments of the present invention and which

  door, overall, a main support assembly mounted on two sets of tracks 21, a set

  front end 22 mounted on the front end of the

  main support, a driving device 23 mounted on the main support assembly and operatively connected to the front end assembly, a

  lifting device 24 mounted on the main support assembly

  and operatively connected to the ensemble of ex-

  front end, pivoting or turning device mounted on the main support assembly, end-mounted drive assemblies 26 and 27

  back of the main support assembly and on the ends

  behind the crawler sets 21 and

  these motive power and appropriate controls mounted on the main support assembly for actuating and controlling

  der these various sets and devices.

  The crawler sets are roughly similar

  to each other as regards their consis-

  truction than their operation. Each of these groups

  bles comprises a track frame 28, a traction sprocket 29 mounted on the rear end of this frame,

  a driven wheel 30 mounted on the front end of this frame

  sis, a series of support rollers 32 mounted on the lower side of the crawler frame and resting on the lower run of the crawler track and a series of

  guide rollers 33 mounted on the upper side of the frame

  caterpillar and carrying the upper strand of the kennel

  the course. Each of the caterpillar sets

  in a conventional way to propel the machine.

  As more particularly represented on

  Fig. 1, 2 and 10, the main support assembly 10 is

  arranged, in the assembly, by a lower frame 34, by a ring 35 of bearing rollers and by an upper frame 36. The lower frame 34 is carried by the track frames 28 of the sets of

  caterpillar and is provided with a ring gear 37. The crown

  No. 35 of bearing rollers is constituted by a lower circular rail 38, mounted on the lower frame, by an upper circular rail 39 mounted on the underside of the upper frame 36 and a series of rollers 40. The rollers are mounted on worn axes

  by a cage structure 41. As more particularly

  shown in FIG. 10, the rollers 40 are carried by the lower rail 38 and the upper rail 39 is carried by the rollers so that the upper chassis can

  be rotated or rotated relative to the frame

  sis around the central vertical axis of the neck.

  of bearing rollers. The upper chassis

  It is also provided with two mounting tabs 42 and 43 at its front end for mounting the front end assembly on the front end.

of the upper chassis.

  The front end assembly 22 comprises, as a whole, a rigid leg or boom 44, a lifting frame 45, a bucket arm 46, a bucket 47 and a lifting rod 48. The rigid leg 44 is constituted by a rigid structural element pivotally mounted at its lower end on the mounting tabs 42 and 43 by means of two foot pins and is provided at its upper end with a head axis 49. The frame

  lift 45 is pivotally mounted on the head axis 49.

  The arm 46 is constituted by a rigid structural element and it is provided with upper and lower forked ends. The forked upper end of the arm is connected to the lifting frame by means of two mounting pins. The lower fork end of the arm is articulated to the rear end of the bucket 47 by means of

  two axes 50 axially aligned. The head part is

  at the front of the lifting frame and the upper end

  bucket 47 are connected by the lifting rod 48. The upper end of the lifting rod is

  fork and is connected to the head part of the frame.

  hoist by a mounting pin 51. The end

  forked fork of the lifting rod is connected

  to the bucket by means of two axes 52 axially aligned.

  It is thus seen that the lifting frame 45, the arm 46, the bucket 47 and the lifting rod 48 are hinged together to form an articulated quadrilateral in which the side formed by the lifting frame is pivotally mounted on the upper end. rigid leg or arrow

by means of the head axis 49.

  To allow for approximately horizontal movement of the bucket as it is driven into a slope in a manner that is dug or loaded, a tilt control device 53 is provided on the end assembly.

  before, a device whose construction and functioning

  have been fully described in US Pat. Nos. 3,501,034 and 3,648,863. In addition, the whole

  front end is equipped with a tilt stop assembly

  54, the construction and operation of which

  fully described in US Pat. No. 4,085.

  854. The driving device 23 consists of a gantry 55 mounted on the upper chassis 36 of the machine, by a drive assembly 56 of the device

  mounted on the upper end of the door

  that, above a housing structure 57 carried by the upper chassis, by a mast 58 provided with pulleys to

  groove 59, by a push rod 60 and a cable

  The mast 58 is constituted by a rigid structural member pivotally mounted at its lower end on two support legs 62 and 63 rigidly.

  attached to the upper frame 36 in advance of the vertical axis

  central ring of the crown 35 of rolling rollers

  tors. The upper end of the mast 58 is provided with a

  axis 64 on which the pulleys 59 are mounted. The biel-

  the depression60 is articulated at its ends

  1 to the lifting frame 45 and around the mounting axis 64 located at the upper end of the mast so that the pivoting movement of the mast 58 in a vertical plane is transmitted by the driving rod.

  to the front end assembly of the machine. The cable

  driving force 61 is operably connected

  to the driving assembly 56 of the driving device

  and extends forward, passes around the pulleys

  59 then extends backwards and is connected to its end.

  rear bracket to a mounting bracket 65 mounted on the

upper part of the portico.

  As shown in Figs. 3 and 4 to which reference will be made, the driver assembly 56 of the driving device is constituted by a cable drum 66 and by a driving device 67. The cable drum is rotatably mounted by means of journals in bearings 67 and 68 mounted on the upper end of the gantry 55. The drum is provided with two main gears transversely spaced 69 and 70

  and an intermediate drum portion 71 provided with

  appropriate guidance for winding the cable of

  darkly 61 around this drum part. The

  drum 71 is placed approximately in

  longitudinally with the mast 58. The apparatus for

  Trailing 67 consists generally of a gear box 72, a pinion shaft 73, a motor 74, a drive shaft 75 and

  planetary gear trains 76 and 77. The gearbox

  Fragments 72 is provided with an annular portion 78 which is rotatably mounted in a bearing 79 mounted in a bearing support block 80 carried in an opening of the gantry so as to ensure the mounting of the gearbox.

on one side of the portico.

  The axial opening of the annular portion 78 is provided with two bearings 81 and 82 which serve to carry one end of the gear shaft 73. A bearing 83, axially aligned with the bearings 81 and 82, is mounted in a support block bearing 84 arranged in a

  gantry 55 and serves to carry the other end.

mite of the pinion shaft.

  The gear shaft 73 has an axially disposed passage and two pinions 85 and 86, which are integrally formed with the shaft, and mesh with the main gear rings 69 and 70 of the driving device drum 66 when the drum is rotatably mounted in the bearings 67 and 68 and that the gear shaft 73 is rotatably mounted in the bearings 81, 82 and 83. The gear shaft is also provided with

  two brake drums 87 and 88 against which

  brakes are likely to come in support of

  to stop the rotation of the gear shaft.

  The motor 74 may be either an electric motor or a hydraulic motor and it is rigidly mounted on the gantry 55 on the side opposite to that carrying the gear boot 72. The drive shaft 75 is connected to the drive shaft. motor output and extends over the entire length of the axial opening of the gear shaft to enter the gearbox 72. The free end of the shaft 75 abuts against a stopper 89

  mounted on the end wall 90 of the gearbox

  swimming. The planetary gear train 76 is provided with a sun gear 91, a ring gear 92 and a gear.

  series of satellites 93. The planetary 91 is formed

  directly on the end of the drive shaft 75.

  The ring gear 92 is constituted by an outer wall portion of the gearbox 72. Each of the

  satellites 93 is provided with an axle 94 mounted on a carrier

satellites 95.

  The plant gear train 77 is composed of a sun gear 96, a ring gear 97 and a series of satellites 98. The sun gear 96 is provided with a

  axial opening through which the drive shaft passes?

  75 and is connected to the 95 planet carrier

  gear train 76. The ring gear 97 is an ele-

  72 of the gearbox. Each of the satellites 98 is provided with an axis 99 mounted on a planet carrier

  100. The planet carrier 100 comprises a part

  annular tie 101 which penetrates into a larger diameter portion of the opening of the sprocket shaft 73

  and which is traversed by the drive shaft 75. The former

  outer end of the annular portion 101 of the holder

  satellites is provided with curved outer splines which are engaged with a set of internal splines

  formed in the end of the pinion shaft to ac-

  couple the planet carrier of the gear train 77 to

the tree of gables.

  During operation of the training apparatus

  shown in FIG. 4, every time the motor

  74 is actuated, the drive is transmitted through the

  medium of the drive shaft 75, the gear train

  planetary gear train 76 and the gear shaft 73 to the drum 66. In such circumstances, the drive is subjected to a first-stage speed reduction produced by the

  planetary gear train 76, a speed reduction

  to a second degree produced by the gear train

  77 and a reduction in speed to a third

  I degree produced by the main gears and parallel main gears which transmit the drive from the gears shaft to the cable drum. Every time

  that we wish to brake the apparatus, we operate a mechanism

  appropriate for me to provoke the coming in support of rubs-

  brake ribbons which cooperate with the brake drums 87 and 88 against these drums to stop the rotation of the gear shaft. The rotation of the box

  gear 72 can be prevented by appropriate means.

  any required, especially by a connecting rod such as the strut 102 which operatively connects

the gantry gearbox.

  The transmission of the charges applied to the pel-

  the, which cause structural deformations of the por-

  the planetary gear trains 76 and 77 is

  prevented by various structural features

  of the driving assembly, such as, in particular, the connection established by the strut 102, the length

  of the drive shaft 75 that allows it to deform

  sea, the coupling with curved splines between the planet carrier of the gear train 77 and the gear shaft

  and the length of the pinion shaft that allows deformation

  limited formation of this tree. In principle, the gear trains 76 and 77 are isolated from the loads applied to the machine and the resulting structural deformations

  of the machine, thus reducing or even completely eliminating

  the misalignment between the gears of

these gear trains.

  In FIG. To which reference will be made, there is shown another embodiment of the present invention. More particularly, FIG. 5 represents

  a driving device driving assembly 103

  which consists, overall, of a cable drum 104, a gear boot 105, a motor 1.06, a drive shaft 107, a first train

  planetary gears'lDB and a second gearset.-

  109. The cable drum 104 is intended

  born to be rotatably mounted by means of journals in

  bearings 110 and 111 mounted on the gantry 55. The housing

  gear 105 is intended to be mounted on the door

  55 at one end of the cable drum 104.

  106 is mounted on the gantry 55 on the other side of the cable drum and is provided with an output shaft-which

  is coupled to the drive shaft 107. The drive shaft

  107 is axially disposed relative to the drum.

  cable bus and enters the gearbox 105.

  The planetary gear train 108 is composed of a

  planetary gear 112 formed on the end of the drive shaft.

  107, a ring gear 113 formed on the box

  gears 105 and a series of satellites 114. Cha-

  each of the satellites is provided with an axis 115 mounted on a

* satellite carrier 116.

  The planetary gear train 109 is composed of a sun gear 117 which is coupled by splines to the planet carrier 116 and which has an opening

  axial axis through which the drive shaft

  toothed 118 and a series of satellites.

  each of the satellites is provided with an axis 120 mounted on a

  planet carrier 121. The planet carrier 121 is

  coupled by splines to a hollow shaft 122 which is traversed by a portion of the drive shaft and is

  equipped, at its free end, with external grooves

  are received within an end of the cable drum 104 and are engaged with internal splines formed therein. Alternatively, the hollow shaft 122 can be connected to the other side of the

  drum by a curved spline coupling.

  During the operation of the assembly 103 of

  driving device dragging, when the engine

  106 is actuated, the drive is transmitted through the

  medium of the drive shaft 107, the gear train

  planetary gears 108 and the planetary gear train 109 to the cable drum 104. Training during

  its transmission through gear trains

  planetary swimming 108 and 109 is subject to reductions

  of speed to a first degree and a second degree. com-

  indicated to me with reference to the embodiment

  in FIG. 4, the planetary gear trains 108 and 109 are isolated from the structural deformations of the machine to prevent misalignment between their gears. The important lengths of the tree

  107 and the hollow shaft 122, which allows

  a deformation of a certain importance, and the

  coupling with curved splines between the hollow shaft 122

  and the cable drum-mainly ensure the isolation

  gearing of structural deformations

machine.

  Fig. 6 represents another embodiment

  of the present invention, the construction and function of which

  are similar to those of the embodiment shown in FIG. 5 it differs only in the

  it includes a speed reduction stage

  plementary. Fig. 6 represents a set 123 of

  driving device drag that is constituted

  overall, by a rope drum 124 mounted

  with trunnions on gantry 55, by

  a first gearbox 125 mounted on the door

  than 55 at one end of the drum 124, by a second

  gear box 126 mounted on the gantry at the end

  opposite tee of the drum 124, by a motor 127 mounted on

  the gear box 125, by a first gear meshing

  The planetary gear 128 is mounted in the gear box 125 and coupled to the motor output 127 via a drive shaft 129 coupled to the sun gear gear 128 and extending through the drum 124.

  to enter the gearbox 126, by se-

  planetary gear train 130 mounted in the housing

  gear 126 and coupled to drive shaft 129 and a third planetary gear set

  131 which connects the planetary gear train to one another

  130 and the drum 124. The planet carrier of the gear train 131 is coupled to a hollow shaft 132 which, at its free end, is coupled to the drum 124 by

  a splined coupling. Likewise, the tree of

  motor 127 is coupled to the sun gear of the train

  gearbox 128 by means of a fluted spline coupling

  quiet because. Alternatively, the motor output shaft can

  to be connected to the sun gear shaft of the gear train 128 by a flexible coupling of an appropriate type.

asked any.

  It will be understood that when the training set

  shown in FIG. 6 is in use and that the motor 127 is actuated, the drive is transmitted through the gear train 128 in which it is subject to a speed reduction to a first

  degree, of the drive shaft 129, of the gear train

  130 in which it is subject to a reduction in speed to a second degree, the gear train 131 in which it is subject to a reduction in speed to a

  third degree and the hollow shaft 132, to the drum 124.

  In this embodiment, the long lengths of the drive shaft 129 and the hollow shaft 132 and the curved spline couplings between the shaft

  engine output and the sun gear of the gear train

  128 and between the hollow shaft 132 and the drum 124

  to isolate the gear trains 128,130 and

  131 structural deformations of the chassis of the machine

  born. Fig. 7 represents another embodiment of the invention applied to a driving device

  who uses a driving arm instead of a

  rope and pulleys, such as that shown on the

  Fig. 1. This embodiment consists of an

  it appears that the driving device 133 has a drive device 134 mounted on

  the gantry 55 and a driving arm 135 mounted equal-

  on the gantry so that it can perform a

  alternate back and forth forward,

  above the training device. The child's arm

  The guide is guided on the upper end of the gantry by groups of rollers 136 and 137 and is provided on its underside with a rack portion 138 which meshes with a pinion portion 139 of a hollow shaft 140 rotatably mounted. on the portico. The training device

  consists, in the main, of a box of engrena-

16 -

  141 mounted by means of a flange on one side of the door

  that by a gearbox 142 mounted by means of a flange on the opposite side of the gantry, by a motor 143 mounted by means of a flange on the gearbox 141, by a first planetary gear set 144, by second and third planetary gear trains and 146, by a drive shaft 147 and by a

hollow shaft 148. -

  Planetary gear train 144 is mounted in gearbox 141. Gear trains

  and 146 are mounted in the gearbox 142 and.

  are arranged in axial alignment with the gear train

  144. The output shaft of the motor 143 is connected to the sun gear shaft of the gear train 144 by a connector 149. The coupling 149 is connected to the sun gear shaft by a curved spline coupling to provide a gear. flexible coupling between the shaft of

  motor output 143 and the gear train 144. The or-

  output shaft of the gear train 144 is connected

  to the input member of the gear train 145 by means of

  147. The shaft 147 is connected to

  to the planet carrier of the gear train 144 by a coupling with curved splines. The planet carrier

  of the gear train 146 is connected to the drive shaft

  140 through the elongated hollow shaft

  148. As shown in Fig. 7, the satellite carrier

  of the gear train 146 is connected to one end

  of the hollow shaft 148 by a curved spline coupling and the opposite end of the hollow shaft 148 is connected to the pinion shaft 140 by a coupling

with curved grooves.

  During the operation of the representative group

  in FIG. 7, when the motor 143 is actuated,

  the drive is transmitted to the planetary gear train

  144 in which it is the subject of a reduction of

  speed to a first degree, then, through the drive shaft

  147, to the planet gear train 145 in the

  which he is the object of a speed reduction to a se-

  cond degree, and then to the planetary gear train 146 in which it is subject to a speed reduction

  to a third degree and then, through the

  hollow 148, to the pinion shaft 140. It will be understood that, during the rotation of the pinion shaft 140, its

  part of pinion 139 meshes with the part of cremailla-

  arm of the driving arm 135 to drive the arm

  either forward or backward.

  It will also be understood that the gear trains 144 and 146 are isolated from the deformations of the chassis of the machine caused by the loads applied to the machine.

  machine because of the long lengths of the tree of

  drag 147 and the hollow shaft 148 and the various ac-

  convex flute couplings used in the trans-

  mission which ensure the achievement of flexible coupling

  between gear trains and other gear

  drives of the transmission.

  The lifting device 24 comprises, in general,

  ble, a drive device assembly 150 for lifting

  age, grooved pulleys 151 and 152 and a hoisting rope

  153. The levitation device training assembly 150 is

  ge is mounted on the upper frame of the machine, com-

  more particularly shown in FIG. 2. The lug 151 is mounted on the lower end of the rigid leg or boom 44 and the pulley 152 is mounted

  on an upper rear end of the lift frame

  45. As shown in FIG. 1, the hoisting rope 153 is operatively connected to the assembly 150

  lifting device, extends forward, passes

  turn of the pulley 151, extends upwards, passes around the pulley 152 and extends downwards and is connected to an attachment bracket 154 mounted on the mounting axis of the pulley 151. It is possible to see also by operating the drive assembly of the hoist for

  unwinding or winding the hoisting rope 153, the casing

  45, the arm 46 and the lifting rod 48 are pivoted about the head axis 49 to

  lift and lower the bucket correspondingly.

  The lifting device driving assembly

  ge consists of a lifting drum 155 disposed

  approximately in longitudinal alignment with the jam

  be-rigid and by two training devices 156 and

  157 almost identical mounted on the opposite ends

  of the lifting drum to which they are connected

in order to train them.

  In FIG. 8 to which we will refer, we see

  that the lifting drum 155 is mounted by means of

  lons on a support frame 158 connected to the upper frame

  of the machine. The training apparatus 157 is constituted

  killed by a gearbox 159 mounted on the mount sup-

  port, by a first planetary gear train 160

  mounted in the gearbox 159 by a gear train

  The secondary planet gear 161 is also mounted in the gearbox 159 by a motor 162 carried by the upper platform of the machine by a flexible mechanical coupling 163 interconnecting the output shaft of the motor 162 and the first gear train. planetary gears 160 and by a drive shaft 164 which

  connects the output gear member of the planetary gear

  161 to the lifting drum 155. The mechanical coupling

  that flexible 163 can be of any suitable type

  who is able to transmit the couple while allowing

  both a relative angular displacement and parallel of its input and output members. A coupling of this type which can be used with the invention and which is commercially available comprises a housing, two axially spaced hubs rotatably mounted in the housing and connectable to input and output shafts and a steel spring that connects between

  them the hubs and that works to convey the cou-

  between the hubs while having sufficient flexibility to allow the axles of the hubs and, therefore, the axes of the output and input shafts

  to move angularly and radially one-by-

port to another.

  The gear train 160 is constituted by a sun gear 165, a ring gear 166 and a senie of satellites 167. The sun gear 165 is formed

  on a shaft that is connected to the output shaft of the

  Coupling 163. The ring gear 166 is part of the gearbox 159. Each of the satellites 167 is

  provided with an axis 168 mounted on a planet carrier 169.

  The gear train 161 is constituted by a planet.

  170, by a ring gear 172 and by a series of

  173. The sun gear 170 is formed on a shaft

  connected to the planet carrier 169 of the gear train

  160 by a splined coupling. The crown

  toothed 172 is part of the gearbox 159. Each

  each of the satellites 173 is provided with an axis 174 mounted on a porteatellites 175. The drive is transmitted from the planet carrier 175 to the hoist drum 155 by means of the drive shaft 164. The outer end of the The shaft 164 is connected to the planet carrier 175 by a coupling 176 with curved splines. The inner end of the shaft 164 is connected to a trunnion

  of the lifting drum 155 by a coupling 178 with cane-

curved lures

  During the operation of the training set

  lifting device shown in FIG. 8, when the motor 162 is actuated, the drive

  is transmitted through the flexible coupling

  163 of the planetary gear train 160 in which it is subjected to a reduction in speed to a first degree, the planetary gear train 161 in which it is subject to a reduction in speed to a first gear second degree and the drive shaft 164, the lifting drum 155 to rotate it. Due to the flexible connection between the motor 162 and the planetary gear set 160 made by the flexible mechanical coupling 163 and the flexible connection between the planetary gear train 161 and the lifting drum 166 made by the spline couplings

  of the driving shaft 164 with the satellite holder

  lites 175 and with the trunnion of the lifting drum, the

  gears 160 and 161 are isolated from the deformations

  structural problems of machinery and, in particular,

  deformations of the upper chassis.

  Fig. 9 represents a further set 179 of

  Lifting drum 180 and a driving apparatus 181. In this embodiment, the lifting drum 180 is provided with annular journals 182 and 183 which are rotatably mounted in bearings 184 and 185 mounted in a support frame 186. The drive assembly is constituted by a motor 187, by a gear box

  188, by a drive shaft 189, by a coupling

  flexible mechanical element 190, by a first gear train

  planetary swims 192 and a second gear train

  The engine 187 is mounted on one side

  lifting drum and is carried by the upper platform.

  the machine. The gearbox 188 is

  the opposite side of the lifting drum and is carried by a frame mounted on the platform. The drive is transmitted from the motor 187 to the gearbox 188 by a drive shaft 189 which extends through the journals 182 and 183. The flexible mechanical coupling 190 is constructed and operates in the same manner as

  the coupling 163 described with reference to the mode of

  the representation shown in FIG. 8 and serves to transmit

  be the torque of the motor output shaft to the shaft

  189 while allowing an angular movement

  and parallel between these trees. The planet gear trains 192 and 193 are mounted in the gearbox 188. The gear train 182 is constituted by a sun gear 194,

  by a ring gear 195 and a series of satellites

  196. The sun gear 194 is formed on the free end of the drive shaft 189. The ring gear is an element of the gear box. Each of the

  satellites 196 is provided with an axis 197 mounted on a carrier

  rotating satellites 198. The gear train 193 is,

  likewise constituted by a planetary 199, by a crown

  toothed 200 and a series of satellites 201. The

  sun gear 199 is connected by means of a cannulated coupling

  with the planet carrier 198 and is provided with a passage

  axial direction to allow the end of the shaft to

  189 to cross it. The ring gear 200 is

  an element of the gearbox. Each of the satellites

  201 is equipped with an axis 202 mounted on a satellite holder

  lites 203. The planet carrier is connected to the

  183 of the lifting drum by a coupling 204 to

  curved grooves. It should be noted, moreover, that

  183 is connected to the main body of the drum by

a splined coupling 205.

  During the operation of the training set

  the lifting device shown in FIG. 9, when the motor 187 is actuated, the drive

  is transmitted through the flexible coupling

  190, of the drive shaft 189, the drive trains

  Planetary Gates 192 and 193 and Journal 183 at

  lifting drum 180. As in the methods of

  previously described, it can be seen that the effect of the flexible mechanical coupling 190, of the length

  of the drive shaft 189 and the coupling

  204 with curved flutes is to isolate the trains

  gears 192 and 193 of the detrimental effects of

  chassis of the machine. The device for rotating or turning the upper frame relative to the lower frame

  on the ring of bearing rollers is con-

  staged by a number of pivot control assemblies 206. Each of the pivot control assemblies 206 is mounted on the upper frame and has a pinion which meshes with the ring gear 37 mounted on the lower frame. Any suitable number of such sets may be used although it is preferable to use an even number of such symmetrically arranged sets. In the machine shown in the drawings, four sets of this type are used, these sets being arranged symmetrically to apply

a uniform charge to the machine.

  In FIG. 10 to which we will refer, we have

  shown a pivoting drive assembly 206.

  Essentially, the whole is made up of a tree -

  pinion 207, in engagement with the ring gear 37, and by a drive apparatus 208 coupled to the shaft

  pinion. The gear shaft 207 is disposed vertically

  and is rotatably mounted in two bearings 209-

  and 208 mounted on a support frame 210 rigidly fixed

  to a portion of the upper frame 36. The lower end

  the free upper part of the pinion shaft 207 is provided with a

  211 with convex teeth engaged with the crown

37.

  The training apparatus of the assembly is con-

  stalled by a gear box 212 mounted on the frame

  support 210, by first and second gear trains

  planetary gears 213 and 214 mounted in the gear box

2475 175

  and by a motor 215 mounted on the gearbox and connected to the first planetary gear set by

  a flexible mechanical coupling 216. The gear train

  Planetary hoists 213 is constituted by a sun gear 217, a ring gear 218 and a series of satellites 219. The sun gear 217 is connected to an output shaft of the flexible mechanical coupling 216 which is

  builds and functions in the same way as

  163 and 190 of the embodiments of the invention.

  described with reference to Figs. 8 and 9. The crown

  toothed gear 218 is an element of the gearbox.

  Each of the satellites 219 is provided with a mounted axis 220

  on a rotating planet carrier 221. The gear train

  planetary gear 214 is constituted by a sun gear 222,

  by a ring gear 223 and a series of satellites

  224. The sun gear 222 is mounted on a sun gear shaft 225 which is connected to the planet carrier 221 by a splined coupling. The ring gear

  223 constitutes an element of the gearbox. Cha-

  each of the satellites 224 is provided with an axis 226 which is mounted on a rotary gate 227. The planet carrier 227 is connected to the upper end of the planet shaft 227.

  pinion 207 by a coupling 228 with curved flutes.

* During the operation of the representative set

  in FIG. 10, when the motor 215 is actuated,

  the training is transmitted through the

  coupling 216 and gear trains 213 and 214 to the gear shaft 207. When the gear shaft is rotated, the interaction of the gear 211 with the ring gear 37 causes rotation or pivoting of the support frame 210 and, therefore, that of the upper frame 36 relative to the lower frame 34 around the ring of bearing rollers 35. As in the previous embodiments of the invention,

  it will be noted that the flexible coupling 216, the coupling

247 51 7.5

  228 with curved splines and the toothed teeth of the pinion 211 act to isolate the gear trains

  213 and 214 deformations of the upper chassis and in-

bottom of the machine.

  The training sets 26 and 27 of the

  mounted on the rear end of the superstructure

  main port and on the rear ends of the

  Crawler wounds 21 are constructed and function both in substantially the same manner. The caterpillar drive assembly 27 is a gypsy

  29 and by a training device 229. The bar

  botin 29 is mounted on a hollow shaft 230 to which it is connected by a splined coupling. The shaft 230 is rotatably mounted in the rear end of the frame

  The training apparatus 229 is constructed

  stowed by a gear box 231 mounted on the side

  outside the crawler frame, by a box of gear

  mounted on the inside of the chassis of

  nille, by a parallel gear train 233 and planetary gear trains 234 and 235 mounted in the gearbox 232, by a drive shaft

  236 extending from the gearbox 232 to

  than in gearbox Z31, by gear train

  planetary swimmers 237 mounted in the gearbox 231,

  by the hollow shaft 230 and by a motor 239 mounted on the former

  rear end of the lower chassis and connected to the train

  parallel gears 233 by means of a mechanical coupling

that flexible 240.

  The parallel gear train 233 is constituted

  killed by two pinions 241 and 242 rotatably mounted in the gearbox 232. The pinion 241 is connected to a coupling 240 which is constructed and operates

  approximately the same way as the couplings

  ments 163, 190 and 216 described with reference to the

  of realization represented on the .Fig. 8 to 10. The

  No. 242 is connected to a sun gear shaft 243.

  The planet gear train 234 is constituted

  killed by a sun gear 244, a ring gear 245 and a series of satellites 246. The sun gear 244 is formed on one end of the shaft 243.

  toothed gear 245 constitutes an element of the gearbox

  232. Each of the satellites 246 is provided with an axis 248 mounted on a rotating planet carrier 249. The train

  planetary gears 235 is constituted by a planetary

  250, by a ring gear 251 and a series of satellites 252. The sun gear 250 is formed on a

  253 sun gear shaft connected to the planet carrier

  249 by a splined coupling. The crown

  toothed gear 251 constitutes an element of the gear box

  232. Each of the satellites 252 is provided with an axis

  254 which is mounted on a rotary planet carrier 255.

  The planet gear train 237 is con-

  governed by a sun gear 256, a ring gear 257 and a series of satellites 258. The sun gear 256

  is formed directly on the outer end of the

  236, which at its inner end

  is connected to the rotating planet carrier 255 by a

  spline coupling. The ring gear 257 is

  in the gearbox 231. Each of the satellites

  258 is equipped with an axis 259 mounted on a satellite holder

  260. The hollow shaft 238 is connected to its end.

  outside by means of a mating coupler 261

  to the rotating planet carrier 260. At its inner end, the shaft 238 is connected to the hollow shaft 230

  by a coupling 232 with curved splines.

  During the operation of the training set

  caterpillar shown in FIG. 11, each time

  that the motor 239 is actuated, the drive is transmitted

  put through the flexible coupling 240,

  of the parallel gear train 233, gear trains

24 75175

  planetary gears 234 and 235, the drive shaft 236, the sun gear gear 237 and the hollow shaft 238 to the gypsy 29, through the shaft 230. When the drive is transmitted from the engine to the sprocket, it is subject to a speed reduction at

  a first degree produced by the parallel gear train

  233, a second-stage speed reduction produced by the sun gear 234, a third-degree speed reduction produced by the planet gear 235 and a reduction in speed from a fourth degree produced by the train

  planetary gears 237. The various gear trains

  in addition, are isolated from the charges applied to the

  crawler chassis and underframe, which

  structural deformations, thanks to the coupling

  240, at the long lengths of the shaft 236 and the hollow shaft 238 and the couplings 261 and 262

with curved grooves.

  At the beginning of each cycle of digging

  China as described, the driving device is

  actuated to completely retract the entire set of

  front and the lifting device is operated for

  lower the bucket so that the bucket is arranged adjacent to

  hundred at the lower end of the rigid leg. of the

  suitable elastic buffers are placed on the end

  lower leg of the rigid leg to prevent it from being damaged by the bucket. To begin the work cycle of the machine, the driver manipulates

  appropriate controls provided for in the position of

  machine to allow the drive cable to unwind. Under such conditions, the weight of the front end assembly causes the rigid leg to pivot forward, simultaneously depressing the

  bucket in the material that is dug or loaded. simul-

  At the beginning of the bucket depressing action, appropriate controls are operated on the machine to cause limited bucket uplift. This is done by operating the lifting drum 155 so that it winds the hoisting rope 153. When the bucket is driven into the slope of the material being dug or loaded, the combined action of driving and lifting has as a result

  moves in a horizontal plane. At the same time,

  Positive control of inclination 53 acts so that the inclination of the bucket remains constant with respect to the ground. At the end of the depressing phase of the cycle, the tilt control mechanism is unlocked to cause the tilt of the bucket upwards and thus ensure that a complete load of material is loaded into

  the bucket. The upward inclination of the bucket is limited

  by the tilt stop device 54, in the manner described in the aforesaid US Pat.

to such a device.

  After the bucket has been tilted upwards, the push and pull controls and the pivoting machinery are operated to position the bucket over the tipper body of a transport vehicle or other location of the bucket. appropriate deposit for the material then the bucket door is triggered to open and unload

  of the material. The desired retraction movement of the

  front end look is performed by operating the motor 74 of the driving device to rotate

  the driving drum 71 and winding the drive cable

  In such conditions, the mast 58 is caused to pivot rearwards and this movement is transmitted to the front end assembly 22 causing pivoting.

to the top of the rigid leg 44.

  As soon as the material has been dumped, we can

  the turning or turning machinery to turn the front end of the machine and bring it back to the leading edge, the device can be actuated

  to continue retracting the set of ex-

  beforehand and it is possible to operate the lifting device

  to allow the bucket arm to pivot to the

  down at a controlled rate until it is again

  calf positioned against the lower end of the jam

  be rigid, ready to start another work cycle.

  To reposition the machine, the propulsion device is actuated, in the usual manner, to move

the machine.

  It will be understood that in the course of

  curing, retracting, lifting or lowering

  bucket, pivoting. of the upper chassis and

  drive of the whole machine, the machine is often

  a multitude of burdens which provoke deformities

  structural mounts of the machine chassis. In conventional excavators of the type described, such deformations

  These would be transmitted to the various gear trains of the various machineries of the machine, causing misalignment between the elements of these gear trains. In the present invention, the transmission of such deformations to the various gear trains of the machine is, at least in large part-ie, suppressed

  which ensures full contact between the teeth of engres-

  swings during the various working functions of the machine. It results from such a uniform and constant contact between the teeth that the transmission of the torque is more efficient and that the wear of the teeth is less strong.

and their less frequent break.

  It will be clear from the reading of the

  precedes that there are a number of changes, adaptations and modifications to this

  invention which are within the reach of the skilled person

  that the present invention relates to. However, it is understood that all variants of this type which do not deviate from the spirit of the invention must be considered as falling within its scope which is not

  limited only by the appended claims.

Claims (91)

  1. Traction assembly for performing a work function, or propulsion, or pivoting function   on a machine having a chassis subject to   as for its deformation, such as an earthmoving machine and in particular an excavator, said assembly comprising a driving apparatus carried by the frame, a driven apparatus carried by the frame, and coupling means connecting the driving apparatus to the apparatus driven in a manner ensuring the transmission of the drive, characterized in that the coupling means connecting the driving apparatus to the driven apparatus comprises a gear train carried by the chassis independently   at least one of said apparatus respectively   connected coupling means in a manner ensuring transmission of the drive,   the apparatus for driving the gear train and the   connecting yen, in a manner ensuring   transmission of drive, the gear train to the app-   such a trainer, and in that the coupling means   cording to the gear train a device respectively   driven or driven carried by the chassis independently   Gear train is of flexible type, so that the gear train is isolated from deformations. of the chassis.   2. The assembly of claim 1 for   perform a job function on a ground machine   having a chassis which is subject to   a deformation of this chassis, this assembly being   characterized in that it comprises a training apparatus   carried by the chassis, a trained apparatus carried by the chassis   sis, a gear train, flexible coupling means   connected in a manner ensuring the transmission of   the training apparatus, the training apparatus with the engi-   and a flexible coupling means connecting, in a manner ensuring transmission of the drive, the gear train to the entrained apparatus so that the gear train is isolated from the deformations of the chassis. 3. An assembly according to claim 2, characterized   in that at least one of the flexible coupling means   includes a drive shaft having a sufficient deformation sufficient to compensate for axial misalignment.   4. An assembly according to claim 2, characterized   in that at least one of the flexible coupling means   bles includes a curved spline coupling.   5. The assembly of claim 2, characterized   at least one of the flexible coupling means   includes a mechanical coupling device which   catch up with angular and parallel misalignments   between its input and output organs.   6. An assembly according to claim 2, characterized   in that it includes, in addition, at least one train of   additional grids connected, in a manner ensuring the transmission of the drive, in series with the first   gear train so as to form a number of different demo's.   7. An assembly according to claim 2, characterized   in that the gear train comprises a gear train planetary swimming.   8. An assembly according to claim 7, characterized   in that it includes, in addition, at least one train of   additional grids connected, in a manner ensuring the transmission of the drive, in series with the first   gear train so as to form a number of different demo's.   9. An assembly according to claim 7, characterized   in that the planetary gear train comprises a   first member connected by a flexible coupling to the appli-   in such a way as to ensure the transmission of   sion of the drive, a second member connected by a flexible coupling to the driven member, in a manner ensuring the transmission of the drive, and a third member immobilized in rotation.   10. An assembly according to claim 2, characterized   in that the driving apparatus comprises an engine   and in that the apparatus incorporates the cable drum.   ble of a cable driving device for a shovel mechanical.   11. An assembly according to claim 2, characterized   in that the training apparatus comprises an engine   and in that the entrained apparatus comprises the cable drum   a cable hoist for a mechanical shovel Picnic.   12. An assembly according to claim 2, characterized in that the apparatus comprises comprises an upper frame structure rotatably mounted on a lower frame structure, in that the drive apparatus comprises a rigidly mounted motor on the upper frame structure and in that the gear train is mounted on the upper frame structure and has a gear engaged, in a manner ensuring transmission of the drive, with a ring gear fixed to the structure lower frame so that when the motor is running, the gear train cooperates with the ring gear to rotate the frame structure   superior to the lower frame structure.   13. An assembly according to claim 2, characterized   in that the driving apparatus comprises a motor and in that the driven apparatus comprises a gypsy of a   crawler drive assembly.   14. The assembly of claim 2, characterized   risé in that the assembly is mounted elastically on the frame of the machine so that said assembly is   more completely isolated from the deformations of the machine.   15. The assembly of claim 2, characterized   rised in that the assembly is mounted on a support frame   elastically connected to the frame of the machine.   16. An assembly according to claim 2, characterized   characterized in that the assembly comprises a driving device driving assembly mounted on the posts   a gantry fixed to the frame of the machine.   17. An assembly according to claim 16, characterized   in that the drive unit drive assembly   darkly is mounted on an upper part of the gantry.   18. An assembly according to claim 2, characterized   rised in that the gear train is mounted in a car-   it is mounted elastically on the frame of the machine.   19. An assembly according to claim 2, characterized   rised in that the gear train is mounted in a car-   ter mounted on a support frame connected elastically to the chassis of the machine.   20. An assembly according to claim 2, characterized   rised in that the gear train is mounted in a car-   mounted on the uprights of a gantry fixed to the chassis of the machine.   21. An assembly according to claim 20, characterized   risé in that the housing of the gear train is mounted   on an upper part of the portico.   22. An assembly according to claim 1, for the en-   of a driving device for a shovel   which has a main chassis that is subject to   loads that cause structural deformations   said chassis, a front end assembly comprising a   earth moving machine operatively connected to the main frame and a cable-driven driving device on the main frame and a cable driving device   mounted on the main chassis and connected op-   to the front end assembly, this set of   characterized in that it comprises a drum 2475 175   mounted to rotate on the main frame, one   coaching unit carried by the main body, a   planetary gear train carried by the main chassis   and comprising a sun gear, a ring gear and a series of satellites mounted on a rotary planet carrier, one of the gear train members being connected to the   driving motor, in a way ensuring the transmission   the drive, by a flexible coupling and another member of the gear train being connected to the drum   cable, in a manner ensuring the transmission of   by means of a flexible coupling and means for   fishing for the rotation of another gear train member   in such a way that the gear train is isolated from   structural formations of the main chassis.   23. Training set of a training device   according to Claim 22, characterized in that the carrier is connected to the cable drum, in a manner ensuring the transmission of the drive, by a flexible coupling.   24. Training set of a training device   according to claim 22, characterized in that the sun gear is connected to the drive motor, in a manner ensuring the transmission of the drive, by a flexible coupling.   25. Training set of a training device   according to claim 22, characterized in that the ring gear is mounted on a housing connected to the   ch & ssis main-by one leg of strength.   26. Training set of a training device   operation according to claim 22, characterized in that it comprises a second gear planetary gear connected,   operatively, in series with the first gear engi-   planetary swims, thus forming first and second floors of reduction.   27. Training set of a training device   according to claim 22, characterized in that   comprises means for braking a member of the gear train   Planetary links operatively connected to the cable drum. 28. An assembly according to claim 1, for Ven-   driving of a driving device for a metal excavator   which has a main chassis that is subject to   loads that cause structural deformations   said chassis, a front end assembly comprising a   the working cable operably connected to the main frame   cipal and a cable driving device mounted on the   main chassis and operatively connected to the   front end, this set of entram-   characterized in that it comprises a support frame mounted on the main frame, a rope drum rotatably mounted on the support frame and a driving apparatus comprising a gear boot mounted on the support frame, a rotatably mounted shaft. in the gear box and in the support frame, two pinions, formed directly on this shaft, meshing with gears provided on the cable drum, an engine   having a drive shaft including a coupling part   flexibly mounted on the support frame and a train of   planetary gears arranged in the gearbox, this   gear train comprising a sun gear mounted on the former   free shaft of the drive shaft, a ring gear mounted on the gearbox and a series of satellites mounted on a rotary gearbox operatively connected by a flexible coupling to the gear shaft   and means for preventing rotation of the boot of Iengre- swimming.   29. Training set of a training device   according to claim 28, characterized in that   the pinion shaft is a hollow shaft, in that the boot of   grading and the motor are arranged on opposite sides of the hollow shaft and in that the drive shaft of the motor 2475 1-75   extends through the axially arranged opening formed in the hollow shaft.   30. Training set of an apparatus for   operation according to claim 28, characterized in that it comprises a second planetary gear set disposed   in the gear boot, this second gear set   taking a connected sun gear, in a way ensuring   transmission of the drive, to the planet carrier of the first   first planetary gears, a gear ring -10 mounted on the gearbox and a series of satellites   mounted on a rotating planet carrier connected by a   flexible coupling, in a way ensuring the transmission   from the drive, to the pine tree.   31. Training set of a training device   according to claim 30, characterized in that the pinion shaft is a hollow shaft, in that the boot   gearbox and motor are arranged on the opposite sides.   of the hollow shaft and that the motor drive shaft extends through the axially arranged opening formed in the hollow shaft.   32. Training set of a training device   The method according to claim 28, characterized in that it comprises at least one brake drum mounted on the pinion shaft.   33. Training set of a training device   according to claim 28, characterized in that   the means for pocketing the rotation of the boot-of   have a leg of strength that connects a   operating the gearbox to the support bracket.   - 30 34. Training set of a training device   according to claim 28, characterized in that   the support frame is a gantry mounted on the main chassis pal.   35. An assembly according to claim 1, for lten-   dragging the drum to the cable of a driving device *. - 2 4 75 175   at the height of a shovel that is subjected to loads.   which cause structural deformations, this set   being characterized in that it comprises a boot of engrena-   ge to be mounted on a support frame of the excavator, a shaft mounted in the truss   and to be rotatably mounted on the frame   port, two gears formed directly on this tree and des-   arranged to mesh, in a manner ensuring the transmission of the drive, with gears provided on the cable drum, a motor having a drive shaft having a flexible coupling portion, for mounting on the support frame , and a planetary gear set disposed in the gear boot, which gear train has a sun gear mounted on the drive shaft, a ring gear mounted on the gear boot, and a series of planetary geared gears. a rotary gear carrier operatively connected by a flexible coupling, to the pine tree.   36. Driving device driving apparatus   according to claim 35, characterized in that the pinion shaft is a hollow shaft, in that the boot   gearbox and motor are arranged on the opposite sides.   of the hollow shaft and that the motor drive shaft extends through the axially deposited opening formed in the hollow shaft.   37. Training apparatus training apparatus   The method according to claim 35, characterized in that it comprises a second planetary gear set arranged   in the gear boot, this second gear set   taking a connected sun gear, in a way ensuring   transmission of entra nemrent, to the planet carrier of   planetary gear set, a toothed ring gear   on the gearbox and a series of global satellites.   on the rotating planet carrier connected by a   flexible manner, in a manner ensuring transmission of the transmission, to the pinion shaft to thereby form   first and second stages of reduction.   38. Driving device driving apparatus   according to claim 37, characterized in that the pinion shaft is a hollow shaft, in that the boot   The gearbox and the motor are arranged on the opposite sides.   of the hollow shaft and that the drive shaft of the motor extends through the axially arranged opening formed in the hollow shaft.   39. Apparatus for driving apparatus   Operation according to claim 35, characterized in that it comprises at least one brake drum mounted on the gear shaft.   40. Driving device driving apparatus   characterized in that it comprises a strut operatively connected to the gear boot and intended to be connected to the support bAti.   41. The assembly of claim 1, for the en-   driving a driving device, for a cable driving device of a mechanical excavator, characterized in that it comprises a cable drum intended to be mounted on a support frame of the excavator which is subjected to loads that cause structural deformations, a   motor intended to be mounted on the support frame, to an   tremity of the cable drum, and having a drive shaft   longitudinally extending through the cable drum, a gear boot for mounting on the support frame,   at the opposite end of the cable drum, a gear train   planetary swims arranged in the gearbox, this gear train comprising a sun gear mounted on the free end of the shaft, a notched ring gear on the boot   gearbox and a series of satellites mounted on a carrier   rotating satellites connected by a flexible coupling, in a manner ensuring the transmission of the drive, to the cable drum. r r   42. Training device drive assembly   Apparatus according to claim 41, characterized in that it comprises a second planetary gear set disposed in the gear boot, the second gear set comprising a sun gear connected, in a manner ensuring the transmission of the drive, to planet carrier of the first gear train, a ring gear mounted on the gear box and a series of satellites mounted on a rotary planet carrier connected by a coupling   flexible, in a way ensuring the transmission of dragging, cable drum.   43. The assembly of claim 1, for the en-   driving a driving device for a target driving device of a mechanical excavator, characterized in that it comprises a cable drum intended to be mounted on a support frame of the excavator, which is subjected to loads which cause structural deformations, a first gear boot intended to be mounted on the support frame, at an end of the cable drum, a   second gear boot intended to be mounted on the housing   a support, at the opposite end of the target drum, an elongate drive shaft disposed in the first gear box, in the cable drum and in the second gear box, a first planetary gear set mounted in the first gear boot, this first train   gears comprising a sun gear intended to be connected to   by a flexible coupling, in a way ensuring the   transmission of the drive, to an input shaft of   dragging, a ring gear mounted on the first boot   gearbox and a series of satellites mounted on a carrier   rotary satellites connected, in a way ensuring the trans-   mission of the drive, to the drive shaft, made   thereby killing a first degree gear, and a second planetary gear set disposed in the second gear box and comprising a sun gear mounted on one end of the drive shaft, a ring gear mounted on the second gear box and a series of satellites mounted on a rotatable planet carrier connected by a flexible coupling in a manner ensuring transmission of the drive to the cable drum, effected   thus killing a multiplication to a second degree.   44. Apparatus for driving apparatus   Apparatus according to claim 43, characterized in that it comprises a motor which is mounted on the first gear boot and has an output shaft connected by a flexible coupling, in a manner ensuring transmission of the drive, to the planetarium of the first planetary gear train. * 45. Driving device entraining apparatus   according to claim 43, characterized in that it comprises a third planetary gear set disposed in the second gear boot, the third   planetary gear train comprising a planetary gear   corded, in a manner ensuring the transmission of the   on the planet carrier of the second planetary gear set, a ring gear mounted on the second boot   gearbox and a series of satellites mounted on a carrier   rotary satellites connected by a flexible coupling, in a manner ensuring the transmission of the drive, to the cable drum, thus making a multiplication - to a third degree.   46. Device driving apparatus   according to claim 45, characterized in that   includes an engine mounted on the first boot of   and has an output shaft connected by an access   flexible coupling, in a way ensuring the transmission   from the training, to the sun gear of the first train of gear- ges.   47. The assembly of claim 1, for lten-   processing of a driving device for a mechanical shovel   which has a main chassis subject to   which cause structural deformations of said frame, a front end assembly comprising an earth-moving tool operably connected to the main frame and a driving device mounted on the main frame and operatively connected to the main assembly; front end, said driving device comprising a reciprocating driving arm having a rack portion, said driving assembly of   driving device being characterized in that   carries a pinion shaft rotatably mounted on the main frame and optically meshing with the part   rack of the driving arm, a driving motor   carried by the main chassis, a gear train   planetary gear carried by the main frame and comprising   a sun gear, a ring gear and a series of   mounted on a rotating planet carrier, one of the   of the gear train being connected to the drive motor.   in a way that ensures the transmission of the   by a flexible coupling and another member of the gear set being connected to the gear shaft, in a manner ensuring the transmission of transmission, by a flexible coupling, and means for pocketing the rotation of another gear train member such that the gear train is isolated from the deformations structural main frame.   48. Dteh-device drive assembly   according to claim 47, characterized in that   comprises at least one additional planet gear train   connected in an operative manner in series with the first above-mentioned planetary gear train so as to   to form several stages of reduction.   49. The assembly of claim 1, for the en-   dragging of a driving device for a shovel   which has a main chassis that is subject to   loads that cause structural deformations   said chassis, a front end assembly comprising a   working tool connected operatively to the chassis   main and a driving device mounted on the chassis   The main assembly is operatively connected to the front end assembly, wherein the drive assembly is characterized by having a support frame mounted on the main frame, a driving arm having a rack portion mounted on the support frame so as to be able to move back and forth, a pinion shaft rotatably mounted in the support frame and meshing with the rack portion of the driving arm and a driving apparatus, comprising an engine and a planetary gear set, mounted on the support frame, which   planetary gear train comprising a planetary gear   corded by a flexible coupling, in a manner ensuring   transmission of training, to a drive shaft   the engine, a ring gear mounted on the frame   port and a series of satellites mounted on a satellite carrier   the rotary connected by a flexible coupling, a   ensuring the transmission of training, in accordance with   sprocket and means to prevent rotation of the toothed crown.   50. Training device training set   according to claim 49, characterized in that the motor and the sun gear are mounted   at one end of the pinion shaft.   51. Dienen device training set   characterized in that the pinion shaft is a hollow shaft and in that it comprises a second planetary gear set mounted on the opposite side of the pinion shaft, the second planetary gear set. comprising a sun gear connected in a manner   transmitting the training, to the satellite holder   of the first sun gear, by a drive shaft extending through the pinion shaft, a gears 2475 175   toothed crown mounted on the support frame and a series of satellites mounted on a rotating planet carrier connected by a flexible coupling, in a manner ensuring   transmission of the drive, to the pinion shaft.   52. A drive unit according to claim 51, characterized in that it comprises a third planetary gear set mounted on the opposite side of the pinion shaft and having a connected sun gear, 'a way ensuring the transmission   of the drive, to the planet carrier of the second train of   planetary gears, a ring gear mounted on the support frame and a series of satellites mounted on a satellite holder.   connected rotary lites, in a way ensuring the transmission   the coupling by means of a flexible coupling to the sprocket.   53. The assembly of claim 1, for the en-   dragging a lifting device for a mechanical shovel   that has a main chassis subjected to loads which cause structural deformations of said chassis,   a front end assembly including a ground tool   operably connected to the main chassis and   a rope hoist mounted on the main frame   pal and operatively connected to the set of   The driving assembly is characterized in that it comprises a lifting drum rotatably mounted on the main frame, a driving motor carried by the main frame, a planetary gear set carried by the main frame. and comprising, a sun gear, a ring gear and a series of satellites mounted on a   rotary planet carrier, one of the components of the engin-   being connected by a flexible coupling, of a   way of transmitting the training,   drive member, another member of the gear train being connected by a flexible coupling, in a manner ensuring the transmission of the drive train, to the drive drum.   lifting gear and another member of the gear train being   bilized in rotation so that the gear train   is isolated from the structural deformations of the main chie   pal. 54. Lifting drive unit according to claim 53, characterized in that the planet carrier is connected by a flexible coupling in a manner which ensures transmission of the drive. at the lifting drum.   55. Lever device training set   vage according to claim 53, characterized in that the   planetary gear is connected by a flexible coupling to the   drive, in a way ensuring the transmission of training.   56. Leverage device training set   vage according to claim 53, characterized in that the ring gear is mounted on a housing connected to the frame principal by one leg of strength.   57. Lever device training set   Vage according to claim 53, characterized in that it comprises a second connected sun gear train.   operatively in series with the first gear train   planetary swimming, thus achieving first and second demo's.   58. nsemble according to claim 1, for the en-   a lifting device for a mechanical shovel   that has a main load subjected to loads which cause structural deformations of said chassis,   a front end assembly including a ground tool   operatively connected to the main chassis, and a chassis-mounted cable hoist   principal and operatively connected to the whole of the   front end, this drive unit being characterized in that it comprises a support frame mounted on the main frame, a lifting drum rotatably mounted on the frame I. 2475 175   support and a training apparatus comprising an engine   carried by the support frame and a planetary gear train   mounted on the support frame, this gear train   motor comprising a sun gear connected to the motor by a flexible coupling, in a manner ensuring the transmission of the drive, a ring gear mounted on the   rack mount and a series of satellites mounted on a rack   rotary satellites connected by a flexible coupling, in a manner ensuring the transmission of the drive, at the lifting drum ,.   59. Trainer set comes into play   Vane according to claim 58, characterized in that the motor and the gear train are on one side of the lifting drum.   60. Leverage device training set   according to claim 58, characterized in that the model   is mounted on one side of the hoist drum and that the planetary gear is mounted on the opposite side lifting drum.   61. Lever device training set   vage according to claim 58, characterized in that   carries a second planetary gear set operatively connected in series with the first gear set aforementioned planet.   62. Leverage device training set   according to claim 61, characterized in that   cond planetary gear train includes a sun gear   connected in a manner ensuring the transmission of the   the satellite carrier of the first train of gear   planetary gear, a ring gear mounted on the btti sup-   port and a series of satellites mounted on a satellite   the rotary connected to the lifting drum by a coupling   flexible in a way ensuring the transmission of the ment.   63. Leverage device training set   vage according to claim 61 ,. characterized in that it t, 2475 1 75   comprises a third planetary gear train connected to   in a way ensuring the transmission of the training   in series with the first and second gear trains mentioned above.   64. Lifting drive assembly according to claim 63, characterized in that the   third planetary gear train includes a planetary   connected in a manner ensuring the transmission of   training, at the planet carrier of the second train of   Planetary gears, a ring gear mounted on the frame   support and a series of satellites mounted on a carrier   rotary satellites connected to the hoist drum by means of a   flexible coupling in a manner ensuring transmission coaching.   65. An assembly according to claim 1 for pivoting on a mechanical excavator comprising a support assembly which comprises a rotatably mounted upper frame.   on a lower chassis, subject to loads which provoke   structural deformations of said chassis, this   seems to pivot to rotate the superstructure   lower than the lower frame and being   in that it comprises a motor mounted on the superstructure   a shaft rotatably mounted in the upper frame   and having a pinion which meshes with a crown den-   mounted on the lower chassis, and a gear train   worn by the upper chassis and of which an organ is   connected to the motor by means of a flexible coupling, a   ensuring the transmission of training, and   another member is connected to the pinion shaft by an ac-   flexible coupling, in a way ensuring the transmission of the training.   66. Pivot assembly according to claim 1, characterized in that the gear train comprises a planetary gear train which comprises a sun gear, a ring gear and a series of satellites mounted on e. -   a rotating planet carrier, and in that one of the   the gear train is connected to the motor via a   in a flexible manner, in a manner ensuring the transmission of the drive, another member of the gear train is connected to the pinion shaft by a flexible coupling, in a manner ensuring the transmission of the drive, and   another member of the gear train is immobilized in rotation   tation. 67. Pivot assembly according to claim   lo 66, characterized in that it comprises a second train of   Planetary hinges operatively connected in series   with the first above-mentioned planetary gear train.   68. Pivot assembly according to claim   66 characterized in that the sun gear is connected to the   by a flexible coupling, in a manner ensuring the transmission of the drive, in that the carrier   is connected to the pinion shaft by means of a flexible coupling   in a way ensuring the transmission of the training   ment, and that the ring gear is mounted on the sis superior.   69. Pivot assembly according to claim   68, characterized in that it comprises a second gear train   planetary meshes operatively connected in series with   the first above-mentioned planetary gear train.   70. An assembly according to claim 1, for the pi-   Votively on a mechanical excavator, characterized in that it comprises a shaft having a pinion for meshing with a ring gear mounted on a lower frame of the excavator, a motor mounted on an upper chassis of the excavator, chassis which is rotatably mounted on the lower frame, and a gear train whose member is connected to the motor by a flexible coupling, in a manner ensuring transmission of the drive, and   another member is connected to the pinion shaft by an ac-   flexible coupling, in a way ensuring the transmission of training. *   71. The assembly of claim 1, for the en-   a propulsion device for a metal shovel   which comprises a propulsion apparatus comprising a rotational drive member and which is subjected to loads causing structural deformations of the apparatus.   propulsion system, this training set being   characterized in that it comprises a drive motor mounted on the propulsion apparatus and a gear train, one of the gear train members being connected to the motor by a flexible coupling, in a manner ensuring the transmission of the drive, and another train organ   gearbox being connected to the rotational drive member   flexible coupling, in a manner ensuring transmission of entrainment.   72. An assembly according to claim 1, for the en-   propulsion device for a metal excavator   which comprises a propulsion apparatus comprising a rotational drive member and which is subject to   loadings causing structural deformations, this   characterized in that it comprises a drive motor mounted on the propulsion apparatus and a planetary gear set mounted on the propulsion apparatus and comprising a sun gear, a ring gear and a series of gears. satellites mounted on a satellite carrier   rotating, one of the gear train members being connected to   to the drive motor by a flexible coupling, in a manner ensuring the transmission of the drive,   another member of the gear train being connected to the gear   rotary drive means by a flexible coupling, in a manner ensuring the transmission of the drive, and another member of the gear train being immobilized in rotation so that the gear train is isolated   structural deformations of the propulsion unit.   73. Training device training set   pulse according to claim 72, characterized in that the V. a 24 75175   The satellite carrier is connected to the   flexible coupling, in a manner ensuring the transmission of the training.   74. Propulsion drive assembly according to claim 72, characterized in that the sun gear is connected to the drive motor by a   flexible connection, in a way ensuring the transmission training.   75. A propulsion drive assembly according to claim 72, characterized in that   it includes a second planetary gear train   operably connected in series with the first planetary gear train, thereby forming first and second stages of reduction.   76. Propulsion drive assembly according to claim 72, characterized in that the motor and the gear train are mounted on one side of the vehicle. the rotary drive member.   A propulsion drive assembly according to claim 72, characterized in that the motor is mounted on one side of the rotary drive member and the gear train is mounted on the side thereof. you   opposite of the rotary drive member.   78. A propulsion drive assembly according to claim 72, characterized in that the motor and the gear train are mounted on one side of the rotary drive member and in that it comprises a second a gear train mounted on said side of the rotary drive member, connected in series with the first gear train in a manner ensuring the transmission of the drive, and a third gear train mounted on   the opposite side of the rotary drive and   in a manner ensuring the transmission of the   the third gear train to the actuator rotation. 2475 175   79. An assembly according to claim 1, for the en-   a propulsion device for a shovel   which comprises a propulsion apparatus comprising a rotary drive member and which is subjected to loads causing structural deformations, said driving assembly being characterized in that it comprises a drive motor mounted on the propulsion apparatus and a planetary gear set mounted on the propulsion apparatus, said planetary gear set comprising a sun gear connected to the motor by a flexible coupling, in a manner ensuring transmission of the drive, a ring gear mounted on the propulsion apparatus   a series of satellites mounted on a satellite carrier   tative connected to the rotary drive member by a   flexible coupling, in a way ensuring the transmission training.   80. Propulsion drive assembly according to claim 79, characterized in that the motor and the gear train are mounted on one side of the vehicle.   The rotary drive member.   81. A propulsion drive assembly according to claim 79, characterized in that the motor is mounted on one side of the rotary drive member and the planetary gear set is   mounted on the opposite side of the rotary drive member.   82. A propulsion drive assembly according to claim 79, characterized in that   it comprises a second planetary gear train * strung, operably, in series with the first train planetary gearing mentioned above.   83. A propulsion drive assembly according to claim 82, characterized in that   the second planetary gear set comprises a planetary gear   operatively connected to the planet carrier of the first sun gear, a ring gear   mounted on the propulsion machinery and a series of   lites mounted on a planet carrier connected to the rotary drive member by a flexible coupling, a   in a way that ensures transmission of the train.   84. Propulsion drive assembly according to claim 82 characterized in that it comprises a third gear train connected, in a manner ensuring the transmission of the drive, in series with the first and second gear trains. gears Planetary.   85. Propulsion drive train according to claim 84, characterized in that   the third planetary gear train includes a   means operatively connected to the planet carrier of the second sun gear, a ring gear   mounted on the propulsion machinery and a series of   mounted on a planet carrier connected to the rotary drive member by a flexible coupling, a   way ensuring the transmission of drive.   86. A propulsion drive assembly according to claim 85, characterized in that   the engine and the first and second gear trains placed   are mounted on one side of the training device   rotational and that the third planetary gear set   is mounted on the opposite side of the drive rotation.   87. An assembly according to claim 1, for the en-   Traction of a rotary member mounted on a chassis subjected to loads which cause deformations of the chassis, characterized in that it comprises an elongated hollow shaft intended to be mounted on the chassis, means disposed on one end of the shaft hollow to connect the shaft   hollow to the rotary member, in a manner ensuring the trans-   drive, an engine designed to be mounted on the chassis and having an elongated shaft * ._ - 2475 175   protruding through the hollow shaft and a gear train to be mounted on the frame and connecting, of a   way of transmitting the training, the former   free end of the drive shaft at the end of the hollow shaft opposite its end which is equipped with   yens which connect the hollow shaft to the rotary member.   88. Training set according to the claim   87, characterized in that the gear train is a planetary gear train.   89. Training set according to the claim   88, characterized in that it comprises a second gear train connecting the motor to the drive shaft, in a manner ensuring the transmission of the drive,   and in that it further comprises means for coupling   flexibly connecting the engine in an efficient manner   to the second planetary gear set. -   90. Training set according to the claim   88, characterized in that it comprises a second train   planetary gears connecting the first gear train   planetary shearings to the hollow shaft, in a manner ensuring   transmission of training, to carry out multiple multiplications.   91. Training unit according to the claim   88, characterized in that it comprises a second planetary gear train connecting the drive shaft   to the engine, in a way ensuring the transmission of   flexible coupling means operatively connecting the second planetary gear set   to the motor and a third planetary gear set -   connecting the first planetary gear set to the   hollow, in a way ensuring the transmission of tratnement.