Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F3/00—Dredgers; Soil-shifting machines
  • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
  • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
  • E02F3/36—Component parts
  • E02F3/3604—Devices to connect tools to arms, booms or the like
  • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
  • E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F3/00—Dredgers; Soil-shifting machines
  • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
  • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
  • E02F3/36—Component parts
  • E02F3/3604—Devices to connect tools to arms, booms or the like
  • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
  • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F3/00—Dredgers; Soil-shifting machines
  • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
  • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
  • E02F3/36—Component parts
  • E02F3/3604—Devices to connect tools to arms, booms or the like
  • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
  • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Definitions

• the invention relates to an earthmoving machine with quick coupling device and reversible adapter for bucket.
• Such an earthmoving machine is able to work in retro mode and in chop mode.
• the reversible adapter is attached to the bucket, and has two pin axes, parallel to each other, capable of being grasped by the quick coupling device in the two opposite directions of the bucket, to work both in retro mode with the opening from the bucket to the machine, than in the hoist mode with the opening of the bucket opposite the machine.
• This machine comprises an adapter consisting essentially of two parallel side plates, connected by two pinning pins. Once placed on the bucket, the adapter receives on one of its axes the hooks of the quick coupler and on the other axis on the one hand, the support of the end of the quick coupler opposite the hooks, and secondly, a fastening lock.
• one of the two axes accumulates in retro mode two distinct functions, recovery efforts digging and locking. Therefore, if a fault appears (positioning, deformation, wear ...) on the axis in question, it can simultaneously result in a detrimental effect on both functions.
• One of the aims of the invention is to provide an earthmoving machine with quick coupling device and reversible adapter not having the aforementioned drawback.
• Another object of the invention is to provide an earthmoving machine with quick coupling device and reversible adapter, having a distribution of mechanical forces favorable to its operational safety.
• the subject of the invention is an earthmoving machine, with a quick coupling device and a reversible bucket adapter, comprising a maneuvering arm at the end of which the quick coupling device is capable of being fixed, said quick coupler device.
• said quick coupler device comprising two so-called front hooks, arranged symmetrically with respect to a vertical plane passing through the longitudinal axis of the operating arm and called reference plane, and a so-called rear lock movable in said reference plane
• the reversible adapter comprising two side plates symmetrical with respect to said reference plane and connected by two broaching axes perpendicular to said plane of symmetry, characterized in that the quick coupling device and the reversible adapter each comprise at least two inclined ramps, the inclined ramps of the device of FIG. quick coupler being in mutual support on the inclined ramps of the reversible adapter.
• the inclined ramps of the quick coupling device are two in number and arranged symmetrically, on either side of the latch, the plane of inclination of the two ramps passing below the hooks .
• the inclined ramps of the reversible adapter are four in number, two on each side plate of the reversible adapter.
• the two inclined ramps of each side plate of the reversible adapter are symmetrical with each other and also inclined on the plane defined by the geometric axes of the broaching axes.
• the inclination angle of the inclined ramps on the plane defined by the geometric axes of the broaching axes is between 5 and 45 ° and preferably 20 °.
• the inclined ramps of the quick coupling device have the same inclination as the inclined ramps of the reversible adapter with which they are in mutual support.
• the invention also relates to a quick coupling device for earthmoving equipment with a maneuvering arm of a bucket, comprising two so-called front hooks, and a so-called rear lock, characterized in that it comprises two inclined ramps arranged symmetrically. on either side of the latch, the plane of inclination of the two ramps passing below the hooks.
• the lock said rear, is a latch biased by spring or cylinder.
• the invention also relates to a reversible adapter for earthmoving machine with a maneuvering arm of a bucket, comprising two lateral plates connected by two pinning axes perpendicular to said planes of the side plates, characterized in that it comprises, on each side plates, two ramps inclined relative to the plane defined by the geometric axes of the broaching axes.
• the two inclined ramps of each side plate are symmetrical with each other and also inclined on the plane defined by the geometric axes of the pinning axes.
• the inclination angle of the inclined ramps on the plane defined by the geometric axes of the broaching axes is between 5 and 45 °.
• this angle of inclination is 20 °.
• each of the pin axes has in its central zone, a flat surface for guiding the locking means of a quick coupling device on the reversible adapter.
• the invention also relates to a set for earthmover with a maneuvering arm of a bucket, said assembly comprising a quick coupling device adapted to be fixed to the end of the maneuvering arm of the machine and an adapter reversible coupling adapted to be coupled to the bucket, said reversible adapter comprising two lateral plates connected by two pinning axes perpendicular to the planes of the side plates, said quick coupling device comprising two so-called front hooks, and a so-called rear lock, the front hooks of the quick coupler being adapted to receive one of the pinning pins of the reversible adapter, the rear latch being intended to be inserted under the other axis of broaching the reversible adapter in the fixed state of the reversible adapter to the quick coupler, characterized in that the quick coupling device
• the reversible adapter is of the aforementioned type.
• the quick coupling device is of the aforementioned type.
• Figure 1 a view of a earthmoving machine according to the invention equipped in retro mode
• Figure 2 a view of the earthmover of Figure 1, equipped in the choir mode;
• FIG. 3 a view of a digging bucket equipped with a reversible adapter according to the invention
• Figure 4 is a perspective view of a quick coupling device according to the invention.
• Figure 5 is a sectional view of a first embodiment of a reversible adapter according to the invention.
• Figure 6 is a sectional view of a second embodiment of a reversible adapter according to the invention.
• Figure 7 a sectional view of a quick coupling device and a reversible adapter, according to the invention, in the cooperation position;
• Figure 8 a sectional view of a quick coupling device and a reversible adapter, according to the invention, in working position on a bucket mounted in retro mode;
• Figure 9 is a sectional view of the quick coupling device and the reversible adapter of Figure 8, in working position on the same bucket mounted in the hoist mode.
• An earth-moving machine 1 with a maneuvering arm 2 and a bucket 3 is equipped in retro mode when the opening of the bucket 3 is turned towards the machine 1 (FIG. 1), and in the hoist mode when the opening of the bucket 3 is facing away from the machine 1 ( Figure 2).
• the bucket 3 (FIG. 3) is equipped with a reversible adapter 4 which enables the quick-attach device 5 (FIG. 4) attached to the end of the operating arm 2 to grip the bucket 3 in each of the two positions corresponding to the modes. retro and chouleur.
• the reversible adapter 4 is essentially constituted in a conventional manner by two lateral plates 6, 7 and two pins 8, 9 for broaching.
• the side plates 6, 7 are symmetrical to one another relative to the vertical reference plane of the machine 1.
• This reference plane is a vertical plane passing through the longitudinal axis of the operating arm 2.
• the lateral plates 6, 7 are interconnected by the two broaching pins 8, 9 which are perpendicular to the reference plane and to the plane of the lateral plates 6, 7.
• the geometric axes of the broaching axes 8, 9 define a plane 10.
• the two broaching axes 8, 9 are symmetrical to one another relative to the median plane 11 perpendicular to the plane 10 connecting their geometric axes.
• the structure of the reversible adapter 4 conventionally comprises reinforcements 12 and means for fixing the bucket 3.
• each side plate 6, 7 carries, towards the inside of the adapter 4, a pair of inclined ramps, or stops, respectively 13, 14 and 15, 16.
• the ramps of the same pair, 13, 14 on the one hand and 15, 16 on the other hand, are symmetrical to one another by relative to the median plane 11.
• the pairs of ramps 13, 14 and 15, 16, are symmetrical to one another with respect to the reference plane of the machine 1.
• the ramps 13 to 16 have an inclination of between 5 and 45 °, more precisely between 10 and 30 °, and preferably 20 °.
• the ramps 13 to 16 define a dihedron, open towards the broaching axes and having an opening angle of 140 °.
• the reversible adapter 4 can be obtained by mechanically welded assembly or by molding.
• the ramps 13 to 16 are mechanically connected to the side plates.
• the quick-release device 5 is carried by the end of the arm 2 of the machine 1. In a conventional manner, it comprises hooks 17 called before and a lock 18 said rear.
• the front hooks 17 are arranged symmetrically with respect to the reference plane of the machine, in the coupled state of the quick coupling device 5 to the operating arm 2, and are intended to receive one of the pinning axes 8, 9 of the adapter 4 reversible.
• the rear latch 18 is intended to be inserted under the other pinning axis to lock the quick coupler 5 on the reversible adapter 4.
• the quick coupler 5 comprises two ramps inclined 19, 20, intended to cooperate with the inclined ramps of the adapter 4 by mutual support.
• the machine 1 works in retro mode.
• the bucket 3 and the reversible adapter 4 are in the situation of FIG. 3.
• the quick coupling device 5 has its hooks 17 engaged on the pinning axis 8 of the reversible adapter 4, and its latch 18 lock position under the broaching axis 9.
• the machine 1 works in the chopper mode.
• the hooks 17 of the quick coupler are engaged on the pinning axis 9 of the reversible adapter 4 and the latch 18 is in position. locking position under the broaching axis 8.
• the inclined ramps 19, 20 of the quick coupling device 5 bear respectively on the ramps 13 and 15 of the reversible adapter 4.
• the mutual support of the inclined ramps 19, 20 of the quick coupler 5 on the inclined ramps 16, 14, or 13, respectively, of the reversible adapter 4 ensures a transmission of mechanical forces on the inclined ramps and not on the pinning axis as in the adapters of the prior art. This results in a better flow of mechanical stresses in the bucket structure, resulting in a better holding of the earthmoving equipment to cyclic loadings. This also results in lower bending forces on the pinning axis under the action of the lock, resulting in greater safety of the earthmoving equipment.
• the reversible adapter 4 In operation in the hoist mode, when the bucket 3 is loaded, the reversible adapter 4 is substantially in a vertical position, and the opening of the hooks 17 of the quick coupler 5 is oriented downwards.
• the cooperation of inclined ramps 13 and 19 on the one hand, 15 and 20 on the other hand, makes it possible to transfer part of the weight of the bucket 3 on the one hand to the latch 18, on the other hand to the hooks 17. It this results in a reduction of the lock constraints and an improvement in safety.
• the inclination of the ramps in mutual support results in a reaction force including a component, parallel to the plane 10 of the geometric axes of the pinning axes 8 and 9, tends to reduce the pin axis of the adapter reversible at the bottom of hooks 17.
• the pinning axes 8 are identical to one embodiment of the invention.
• the first phase consists in bringing the hooks 17 of a pinning axis.
• the quick coupling device 5 is pivotally pivoted onto the broaching pin 8.
• the latch 18 In the case of a latch 18 biased by spring, to the during this pivoting of the quick coupling device 5, the end of the pivot 18 comes into contact with the pin pin 9. By bearing on the surface 22, the latch 18 is pushed into its sheath by compressing its spring. When the free end of the latch 18 leaves the surface 22, the spring pushes the latch 18 which locks under the pin pin 9. Alternatively, the latch 18 back can be solicited by a jack such as a jack hydraulic.
• the advantages of the invention are related to the arrangement of symmetrical inclined ramps in the reversible adapter and in the quick coupling device.
• a single reversible adapter with a symmetrical contact profile ensures the recovery of forces in both operating modes, retro and chouleur.
• the profile and the angle of the inclined ramps are determined to provide the best compromise between recovery of effort and play catch, and a better transmission of the tilting forces, avoiding bending on the pinning pin ensuring locking.
• the mechanical stresses are directly taken up by the side plates of the reversible adapter and are then diluted towards the bucket 1 whereas in the prior art, a central recovery of the stresses causes a bending-compression of the pinning axis ensuring the locking which is detrimental to fatigue.
• the dissociation between the parts ensuring, on the one hand the recovery of the main efforts of digging and on the other hand the locking of the quick coupler on the reversible adapter, induces a better management of the wear.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mining & Mineral Resources (AREA)
• Civil Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Component Parts Of Construction Machinery (AREA)
• Shovels (AREA)
• Soil Working Implements (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=58547585

Family Applications (1)

Country Status (5)

Cited By (1)

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Citations (3)

• 2016
  • 2016-12-05 FR FR1661938A patent/FR3059685B1/fr active Active
• 2017
  • 2017-11-29 PL PL17816931.4T patent/PL3548671T3/pl unknown
  • 2017-11-29 WO PCT/FR2017/053281 patent/WO2018104614A1/fr active Application Filing
  • 2017-11-29 EP EP17816931.4A patent/EP3548671B1/fr active Active
  • 2017-11-29 ES ES17816931T patent/ES2953517T3/es active Active

Patent Citations (3)

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