FR2763318A1 - CONTAINER LIFTERS WITH MOBILE RETAINING AREAS AND TIPPERS EQUIPPED WITH SUCH CONTAINER LIFTS - Google Patents

Abstract

The invention relates to a container lifter (1) comprising a beam (3) movable in translation between a lower position for hooking up the containers and an upper position in which this beam (3) has a first rotational movement for tilting and the emptying of the containers and a second rotational movement in the opposite direction as well as a bucket equipped with such a container lift. The invention is characterized in that a first sector (14) integral with the beam (3) covers a fixed roller (27) during the first and second rotational movements. The invention applies, in particular, to the field of waste collection.

Description

CONTAINER LIFTERS WITH MOBILE RETAINING AREAS AND DUMPS

EQUIPPED WITH SUCH CONTAINER LIFTS

  The present invention relates to a container lifter.

  In general, the container lifts fulfill the functions which ensure, as a first step, the attachment of the containers or trays on a beam, the rise in translation of the beam / container assembly and the tilting of said containers

  around an axis of said beam to empty them into a hopper of a waste collection vehicle as well as, in a second step, the reverse movements which bring the emptied containers back to the ground.

  Usually, the translational movements are obtained by two first cylinders while the rotational movements are obtained by two other cylinders. However, two unique longer stroke cylinders can be responsible for all of these movements. In this case, these two single cylinders are associated with different mechanisms of the rack pinion type or of the sliding friction joint type. 20 These mechanisms have large dimensions so as to withstand the considerable forces to which they are necessarily subjected during their operation and the wear produced in operation. In addition, these mechanisms exhibit less good retention during the reverse rotation movement of the beam and at the start of the descent phase, in particular, in the case where the small empty tanks no longer exert a driving torque.

  sufficient to assist the reverse rotation movement.

  Considering the above, a problem that arises

  proposes to solve the invention is to make a lifter

  containers in which the rotational movements and

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  reverse rotation of the beam are clearly ensured

  by means for retaining said beam.

  According to the invention, a solution to this problem relates to a container lift comprising a beam movable in translation between a lower position for hooking the containers and an upper position in which this beam has a first rotational movement for tilting and emptying. containers and a second rotation movement in opposite direction, characterized in that a sector integral with the beam covers a fixed roller during the first and second movements of

  rotation, as well as a bucket equipped with such a lifter

container.

  The description which follows, and which does not include

  no limitation, will allow better understanding

  how the invention can be put into practice.

  It should be read in conjunction with the accompanying drawings, in which:

  - Figure 1 shows, in side view, a lifter

  containers according to the invention in which the beam is presented in its lower position for hooking the containers; - Figures 2A and 2B show, reciprocally in front view and in side view, a container lifter according to the invention in which the beam is presented in its upper tilting and emptying position of the containers; and

  - Figure 3 shows, in side view, a lifter

  containers according to the invention in which the beam is presented in its upper tilted emptying position

garbage.

  The container lifts 1 are most often placed behind a skip of a waste transport vehicle, immediately below an opening of said through skip in a hopper for loading the

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  waste. They are intended to fulfill the following gripping and emptying functions of the containers in this hopper, the rim of which is referenced 2 on

the set of figures.

  A container lifter 1 according to the subject of the invention essentially consists of a beam 3

  transverse and motor means of said beam 3.

  The beam 3 is movable in translation along vertical rails 5 fixed on the lateral sides of a frame 6 delimiting the opening of the bucket. Each rail 5 is formed by two parallel side walls 7, 8 connected, in their upper part, for example in an arc of a circle 9. One 8 of the side walls 7, 8 has, on its internal face, substantially at mid-height, a heel 10 while the other wall 7 has, substantially in

  look of said heel 10, an opening 11.

  The upper part of the beam 3 is substantially in the form of a tube 12, each of the two ends of which is provided, on the one hand, with a roller or a shoe known as the main roller 13 and, on the other hand, d 'a first 14 and a second 15 sectors integral with the beam. The main roller 13 is retained between the walls 7, 8 of a rail 5. The first 14 and second 15 sectors are however not retained between these walls 7, 8. These sectors 14, 15 are formed by a curved wall defining an angular space around the tube 12, said angular space being limited inwardly by said tube 12 and outwardly by said wall

curve.

  The beam 3 comprises a box 18 fixed movable in rotation along the longitudinal axis 17 of the tube 12. This box 18 comprises, in its upper part, a comb provided with teeth 19 and, in its lower part, a stopper 21. It comprises also a roller 20 called roller

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  follower retained between the walls 7, 8 of the rails 5 when

said box 18 is vertical.

  To retain the trays during the rotational movements against the teeth 19, a plate 16, folded practically at a right angle, is fixed to the tube 12 by means of two bearings 4 thus forming a clamping device set in motion by a jack.

independent 24.

  The driving means of the beam 3 consist of two single jacks 23, the head of which is fixed to each of the lateral sides of the box 18, substantially at the point referenced 22 in all of the figures, and the

  body and stem are represented by an arrow line.

  These drive means are intended to move the beam 3 in vertical translation between a lower position known as attachment of the bins or containers and an upper position in which said beam 3 has a first rotational movement for the tilting and emptying of the containers and a second rotation movement in opposite direction around the axis

  longitudinal 17 carried out by said motor means.

  In the lower hooking position of the containers (FIG. 1), the main rollers 13 and follower are held in the rails 5. The box 18 is substantially vertical and it is possible to hang the upper edge of the containers on the teeth 19 of the comb, the lower part of said containers then coming into abutment

on the stopper 21.

  With a view to emptying the containers, the beam 3 is brought into vertical translation from its lower position to its upper position more particularly

shown in Figures 2A and 2B.

  At the start of rotation of the beam 3, the small jack 24, integral with the plate 16, is actuated so as to

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  move said plate 16 of the clamping device towards

  the teeth 19 and to block the containers in position.

  When the beam 3 approaches its upper position, that is to say before the arrival of the main roller 13 at the upper end in an arc 9 of the rails 5, the follower roller 20 rises on the inclined plane of the heel 10, which gives an impulse to the rotation of the beam 3 and causes the exit of said follower roller 20 out of the rails 5, through the opening 11, according to a first rotational movement centered on the axis 17 and shown diagrammatically, at FIG. 2A, by an arrow 25. Therefore, unlike the mechanisms proposed in the prior art, the sequence of movements at the end of translation-start of rotation is not done with brutality due, in the case of lifts- containers with two single cylinders, with vertical deceleration coupled with acceleration in one direction

practically horizontal.

  The first rotational movement continues at an angle of almost 140 thanks to the action of the main cylinders. The containers, held by the gripping system, therefore tilt in a circular movement

  and empty their waste into the hopper.

  According to the invention, during the first rotational movement, the first sector 14, integral with the beam 3, covers a fixed roller 27 of the part in an arc 9 located at the upper end of each rail 5. The beam 3 is thus retained and guided in rotation, throughout its movement, until the angle of approximately

  140 with respect to the vertical is reached (Figure 3).

  Then, a second rotation movement in the opposite direction is engaged, still under the action of the cylinders 23 supplied on the piston side. In this second reverse rotation movement, as in the first movement, the first sector 14 covers the fixed roller 27 and the beam 3, thus

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  retained, necessarily rotates, whatever the weight

empty bins or containers.

  At the end of this second reverse rotation movement, the follower roller 20 takes its place between the walls 7, 8 of the rails 5 and a downward movement

  vertical drives the empty containers to the ground.

  The skips of waste collection vehicles equipped with container lifts according to the invention, in particular the skips intended for mixed container and bulk collections (bags, etc.), are advantageously provided with a hopper extension. This extension 25 is articulated on the rim 2 of the hopper or on the frame of the container lifter. Depending on its folded position or not, it

  partially partitions the opening or not.

  In the prior art, the positioning of the extension is very often carried out manually, after loading the bags and beforehand

  at the so-called mechanized loading carried out using the lifter

  containers. This installation is generally completed by a manual locking system on the right and left of the riser. These maneuvers are sometimes the cause of incidents, for example, bodily injury, and constitute a waste of time in collecting. In addition, during mechanized loading, a hopper extension blocked in place is likely to remain in this position, even in the case where a strong thrust is exerted from the interior of the hopper on said extension, for example, when docking waste located near the edge of the hopper. In such a case, the hopper extension and the rigid locking system may undergo deformations which could

  then stop them from working.

  On the other hand, according to a particularly advantageous embodiment of the invention, the positioning of the extension 25 is ensured by the second sector

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  , without any manual intervention. In fact, during the upward vertical translation phase of the beam 3, the extension 25 folded out towards the outside of the bucket is firstly pushed back by the upper end of the clamping device and then by the second sector 15. The free end of the extension 25 then slides along the outer surface of the second sector 15 which leads said extension 25 until it is pinched in the flexible hooks 26 for example. The riser 25 normally remains in this position during the successive collection of several bins but can be opened manually at any time, in particular for emptying trash cans and loading bags or for loading bulky household items. For this purpose, it suffices to pull with a simple gesture of a hand up and substantially in the middle of the width of the extension 25 without risk of pinching the fingers, this zone being completely and

freely accessible.

  Note also that, in the case of a strong thrust exerted on the riser 25, it can open slightly until contact with the sector 15 which also ensures the retention of the riser 25 in this position during the rotation movements / reverse rotation of the beam 3, without risk that the extension 25 is pushed back below the beam 3 in its end of rotation position. The second sector 15 therefore ensures the retention of the riser 25 in its installation zone, even in the event of accidental opening, during the rotation / reverse rotation movements of the

beam 3.

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Claims (5)

  1. Container lifter (1) comprising a beam (3) movable in translation between a lower position (FIG. 1) for hooking the containers and an upper position (FIGS. 2A, 2B and 3) in which this S beam (3) has a first rotational movement for tilting and emptying the containers and a second rotational movement in the opposite direction, characterized in that a first sector (14) integral with the beam (3) covers a fixed roller (27) during the first and second rotational movements.   2. Container lifter according to claim 1, characterized in that the driving means of the beam (3) are constituted by two single jacks (23) intended to move said beam (3) in vertical translation between its lower position and its position superior and to   perform the first and second rotational movements.   3. Container lifter according to one of claims 1 or 2, characterized in that the beam (3) comprises a   follower roller (20) retained between the walls (7,8) of the rails (5) when a box (18) of the beam (3) is vertical and in that said follower roller (20) rises on   a heel (10) during the vertical translation of said beam (3) which gives an impulse to the rotation of the beam (3) and to the exit of the roller (20) 25 from the rails (5).   4. Container lifter according to one of claims 1,   2 or 3, characterized in that a second sector (15) ensures the installation of a hopper extension (25) during the upward translation of the beam (3), and   retains said extension (25).   5. Tipper equipped with a container lifter according to one of the preceding claims.