EP2922772B1 - Rubbish collection vehicle with an improved container lifter - Google Patents

Description

Technical field of the invention

The present invention relates to a container lifter and a compact waste collection bucket for use in a rear-load waste collection bucket.

State of the art

There are many container lifts for rear-loading garbage collection bins (BCDs).
The patent FR 1 522 813 A1 (Zöller) describes a container lifter allowing the vertical rise of the container, but this rise is effected by sliding on rails.
Patent applications DE 2,920,900 A1 (Stratmann) EP 0 122 493 A1 (Schmitt), SI 9900106 A , and EP 0 169 558 A2 (Hermes) describe four-armed container lifts. The patent application DE 35 00 691 A1 (Schmitz) discloses a waste container hoist according to the preamble of claim 1. The patent application GB 2,224,261 (Allen) describes a container lifter that allows the container to be mounted vertically, followed by complete tilting. The patent US 5,513,937 (Automated Refuse Equipment) describes a container lifter that allows the container to rise vertically and in a substantially vertical path, but the system is quite complex. The documents US6,551,046 and WO 2000/66462 (Zoller) describe container lifts that allow vertical movement with very little horizontal movement, but these systems are also complex in fabrication and operation.
The documents FR 1 424 273 (Zoller) and EP 0 820 941 (CLG Inversiones) describe container lifts having a parallelogram geometry, which makes it possible to move the container to empty in two phases: a vertical rise phase followed by a tilting phase.
The European patent application EP 0 512 469 A1 (Waste Hoists) describes a compact container lifter that allows the container to rise vertically, then tilts. It has two arms that lift the container to its highest position, followed by a mechanical swing. More specifically, this system comprises a main arm intended to be mounted on a frame pivotally about a first right-left axis (here called A1), intended to take a low position and a high position relative to a low direction -High, a frame mounted on the main arm pivotally about a second right-left axis (here called A2), a chair mounted on the frame for receiving a container for lifting, an auxiliary arm for pivotally mounted to the frame about a third right-to-left axis (here called A3), and mounted on the armature pivotally around a fourth right-left axis (here called A4). In this system, the distance between axes A2 and A4 is almost equal to the distance between axes A1 and A3. In addition, the distance between the axes A1 and A2 is almost equal to the distance between the axes A3 and A4. Thus, this lifter forms almost a parallelogram, which allows the frame - and therefore also the chair - to remain always vertical. This has the disadvantage that it can be difficult to mount a container on the chair when the floor is sloping rearward and the top of the container is set backward relative to the bottom of the container. Indeed, the container is often attached to the chair from above. It is then necessary for the rider to lift the container to nest on the chair. In addition, since the armature remains vertical in the upper position of the main arms, it is necessary to provide a strong pivoting of the chair relative to the frame, much greater than 90 °. This requires significant effort and takes time.

Other container lifter systems are described in the documents FR 2,461,667 (SITA) US 4,773,812 (Bayne Machine Works, Inc.) and FR 2 153 053 (Sulo Eisenwerk).

In particular, the prior art container lifter systems are not well suited to equip small size rear load BCDs. In fact, alongside large BCDs, there is a real need for smaller BCDs. This need exists especially for small municipalities, or in municipalities with narrow and / or sloping streets, for example in mountain villages. To reduce the size of these vehicles and to adapt them to the operation in tight spaces, it is desired to reduce the functional area of the lifter. In particular, it is desired that the projection of the functional area on the horizontal is small, so as not to destabilize the BCD when lifting very heavy containers, and to reduce its size in operation. Moreover, such a system of lifting containers must be able to grab waste bins of very different sizes. And finally, it must be simple, lightweight and robust construction. And finally, it would be advantageous that it can be mounted, without undergoing constructive modifications, on the side of the vehicle and not in the rear, because there is also a need for small BCD side loading.

In order to remedy at least in part the disadvantages of known container lifts, it is proposed a rear loading BCD container lifter, improved by a particular geometry. This container lifter is also suitable for a side loading BCD.

Objects of the invention

A first object of the invention is to provide a rear loading BCD container hoist which has a small footprint in reduced operation.
Another object of the invention is to provide a rear loading BCD container hoist which is suitable for small BCDs, and which has a high level of maneuverability.
Another object of the invention is to provide a rear loading BCD container hoist which is suitable for small BCDs, and which has a high level of safety for the rippers. In particular, it is desired to avoid two risks: the crushing of the ripper behind the container that rises (this risk is increased in the case of small BCDs dedicated to operating in lanes with reduced lateral and / or rear space), and the risk associated with the containers that fall on the descent, especially when the gripping system releases the container while the latter is not yet in a fixed position on the ground. In general, it is desired that the container lifter system rests the container exactly where it seized, and without risk of overturning the container.
Another object of the invention is to provide a rear loading BCD container hoist that is fast, lightweight, and robust, can operate with small cylinders, and low energy consumption.
Yet another goal is to provide a container lifter that can be used in a BDC in rear load mode or side load mode.
These objects are achieved by a rear-loading refuse collection hopper lifter according to claim 1. This system of lifting containers, which is the first object of the invention, has the following advantages: when the main arm is raised, the top of the chair tilts forward relative to the bottom of the chair, it starts the spill, and when the main arm is lowered, the top of the chair tilts backwards relative to the bottom of the chair, which allows easier engagement of the comb. In addition, the lift is carried out near the back wall of the BCD.
The distance between the axes A12 and A14 (D24) is advantageously at least 10% greater than the distance between the axes A11 and A13 (D13), preferably at least 20%, and more preferably at least 30%. The distance between the axes A13 and A14 (D34) is advantageously greater than the distance between the axes A11 and A12 (D12). The distance between the axes A13 and A14 (D34) is advantageously at least 5% greater than the distance between the axes A11 and A12 (D12), preferably at least 10%. The axis A11 is advantageously above the axis A13, and in which the axis A12 is located above the axis A11.
In one embodiment, the chair has an upwardly pointing comb for fitting into a forward-facing downward edge of the container so that the inside of the turned-up leading edge rests on the comb. Advantageously, the chair has a stop directed towards the rear, against which a front face of the container is intended to rest.
The chair is mounted on the frame pivotally about a fifth left right axis, called A15 axis, and intended to selectively take a position pressed against the frame between the lower position and the upper position of the main arm or arms, and a discharge position when the at least one main arm is in a raised position, in which the chair has pivoted about the axis A15, so that the container received on the chair has also rotated about the axis A15 and can empty of its contents. According to the present invention, the axis A15 is above the axis A12.

When the main arm or arms are in the down position, the axis A11 is above the axis A12, and when the main arm or arms are in the up position, the axis A12 is above the axis A11. .

When the main arm or arms are in the low position, the perpendicular to the axes A11 and A12 makes an angle (delta12) with a front-to-back direction of between -50 ° and -75 °, and when the main arm or arms are in position high, the perpendicular to the axes A11 and A12 makes an angle with the direction-front rear between 50 ° and 75 °.

When the main arm or arms are in the low position, the angle between the perpendicular to the axes A11 and A12 and perpendicular to the axes A13 and A14 is between 0 and -5 °, and when the main arm or arms are in the up position. the angle between the perpendicular to the axes A11 and A12 and the perpendicular to the axes A13 and A14 is between 10 ° and 20 °, and preferably between 12 ° and 18 °.

In an advantageous embodiment, which is suitable for most containers, the distance between the axes A11 and A12 (D12) is at least 60 cm, and preferably at least 70 cm.

The container lifter according to the invention may further comprise a clamp serving as a removable pouring rim, mounted on the chair pivotally about a sixth right-left axis, called axis A16. Said clamp is intended to take, when the chair is in the pressed position against the frame, a lowered position in which the clamp allows the container to be received on the chair, and, when the chair is in the discharge position, a position raised in which the clamp is intended to facilitate the discharge of the contents of the container. Advantageously, the clamp comprises a rear edge, in which, in the lowered position, the rear edge is clear of the comb, and in which, in the raised position, the rear edge is in front of the comb so that the front edge of the container is turned upside down. received on the chair is sandwiched between the comb and the back edge of the clamp.

In the hoist according to the invention, the auxiliary arm or arms are intended to adjust the inclination of the armature about the axis A2 so that the perpendicular to the axes A2 and A4 makes an angle (a24) between -15 ° and -10 ° relative to the vertical when the main arm (s) are in the low position, and so that the perpendicular to the axes A2 and A4 makes an angle (a24) between 20 ° and 25 ° when the or the main arms are in the up position.

In an advantageous embodiment, which ensures gripping and safe removal of the container, in the engagement position of the container gripping system, the angle σ3 defined by the angle between the straight line passing through the axes A13 and A14 d on the one hand, and A11 and A12 on the other hand, is between -5 ° and + 5 °.

Another object of the invention is a waste collection bin (BCD) comprising a chassis, a propulsion system in a rear-front direction, a box received on the chassis and intended to store the contents of containers, a hoist containers according to the invention mounted on the chassis. This box may comprise a rear wall defining a rear opening through which the contents of the containers is intended to enter the box, and wherein, when the main arm or arms are in the high position, the clamp is in the raised position, and when the chair is in the discharge position, the clamp extends above the edge of the rear wall, and preferably rests on the edge of the rear wall. Advantageously, the axes A11 and A13 are located under the box.

Description 1. Figures

• The Figures 1 to 9 illustrate the invention.
• The figure 1 shows a perspective view of a waste collection bucket according to the invention.
• The figures 2 and 3 mounted a container lifting system according to the invention, in a decomposed manner ( figure 2 ) and assembly (3).
• The figure 4 schematically mounting the geometry of the container lifting system according to the invention in a low position; it defines distances (D12, D13, D24, D34) with respect to the axes A11, A12, A13, A14, and angles δ12, δ24 with respect to the axes A12, A14 and the vertical and with respect to the axes A11, A12 and the horizontal, respectively.
• The Figures 5 to 7 illustrate the kinematics of the container lifting system, as explained below.
• The figure 8 illustrates a particular embodiment in which the container hoisting system according to the invention is mounted so that it can be used on the left side of the vehicle.
• The figure 9 defines certain height parameters H1, H2, H3 useful for characterizing the method of lifting and emptying containers according to the invention.

List of references used in the figures: 1 Waste collection bucket 2 box 3 Arise containers 4 Frame 5 Cabin 20.21 Trolley cylinder 22 Sliding trolley 23 Rod pallet 25 Lower excavator 26 Lower excavator cylinder 30 Roof 31 Spar-slide 33 Front beam 38 Excavator 40 Bottom of box (front part) 42.43 Side wall 45 Gate 46 Bottom of box (rear part) 47 Gate cylinder 50.51 Side part of the gate 52 Central part of the gate 53 Manual locking means 57 Holding handle 60 Chair 61,62 Amount 63.64 Main arm 65.66 Auxiliary arm 67 pliers 68 Comb 69 crossing 70 Cylinder to operate the clamp 71,72 Rotation cylinder 73.74 Lifting cylinder attachment point 75.76 Anchorage point for rotation of the main arm 77.78 Attachment point for the rotation of the chair 79 Lower stop of the chair 80 Peripheral profile 96 Plug welding area 170,171 Protection rods 180 ferry 181 Rear edge of the bin 190 Ground

The letters A1, A2, A3, A4, A5, A6, A11, A12, A13, A14, A15 and A16 denote axes. The letters D12, D13, D24 and D34 denote distances between axes.

2. Definitions

By "waste collection bin (BCD)" we mean a vehicle used for the collection and transport of waste (for example, household waste, bulky waste, recyclable waste which is loaded either by waste containers or by A BDC consists of a chassis-cab on which a superstructure is mounted A "rear-loading BDC" is a BDC in which the waste is loaded into the caisson from the rear, the "caisson" is part of the superstructure in which the collected waste is transported The "cab" is an enclosure mounted on the frame at the front of the superstructure and which houses the cockpit of the rear-load BCD The "superstructure" is the assembly of all components attached to the BCD chassis-cab and including the box The "BDC capacity" is the internal volume available for the waste The "compacting mechanism" is the e mechanism for compacting and / or transferring the waste into the box.

Here we mean by "lift-containers" (*) a mechanism fixed on a BCD for the loading of waste in its caisson. A "waste container hoist" is a mechanism installed on a BDC for the emptying of the planned waste containers. An "integrated garbage lifter" (*) is a waste container lifter designed to be permanently attached to the BCD casing.

We mean by "gripping system" (*) the part (s) of the lifter intended (s) to be in contact with the garbage container to receive its corresponding portion for the purpose of gripping, lifting and emptying .

By "comb gripping system" (*) is meant a horizontal row of upwardly directed teeth and a locking system for retaining, during emptying, the waste container.

By "functional area" (*) is meant the space covered by the movements of the lifter and the waste container or containers when lifted by a container lifter.

By waste bin emptying cycle, we mean the sequence of sequences required to grab, lift, tilt and empty the intended waste container and place it on the ground.

These definitions are derived from European standards EN 1501-1 (2011) or (*) EN 1501-5 (2011), known to those skilled in the art.

We mean by "ripeur" a garbage man working at the back of the bucket.

3. Detailed description

The figure 1 shows a BCD 1 equipped with a lifter 3 according to the invention. This BCD typically comprises a chassis 4 with a cabin 5 and a superstructure comprising the caisson 2, a container lifter 3 and a compaction system. This BCD comprises a box 2 which is specially designed to be mounted on a standard truck chassis GWIP of less than or equal to 10 t, and preferably a GVW of 9 t or 7.5 t. It includes a system of compacting waste.

The figures 2 , 3 and 4 show in detail the container lifter system 3 according to the invention. Its kinematics is explained on the figures 5 , 6 and 7 .

The lifting device system 3 according to the invention comprises at least one main arm 63, 64 intended to be mounted on a frame 4 pivotally about a first right-left axis, called the axis A11, intended to take a position low and a high position relative to a low-high direction, a frame 61, 62 mounted on said main arm 63, 64 pivotally about a second right-left axis, called A12 axis, a chair 60 mounted on the armature 61,62 and intended to receive a container 180 to lift it, at least one auxiliary arm 65, 66 intended to be mounted on the frame 4 pivotally about a third right-left axis, called axis A13, and mounted on the frame pivotally about a fourth right-to-left axis, called the axis A14, said container lifter system being characterized in that the distance between the axes A12 and A14 (D24) is greater than the distance between the axes A11 and A13 (D13).

Advantageously, the distance between the axes A12 and A14 (D24) is at least 10% greater than the distance between the axes A11 and A13 (D13), preferably at least 20%, and more preferably from minus 30%.

The lifting device system 3 according to the invention comprises three types of jack: at least one lifting jack of the lifting system (not shown in the figures) which makes it possible to lift the main arm 63,64, a jack 70 to actuate the clamp 67, and at least one cylinder 71,72 of rotation.

Here we describe in detail the kinematics of the container lifter according to the invention, with reference to the figure 5 . The emptying cycle of the waste container comprises two distinct phases of rise and tilt.

In a first phase, the main arm rises in a first stage ( figure 5a ), which makes it possible to hang a small tray with the comb. In a second step, ( figure 5b ), the main arm rises further, which allows to hang alternatively a large tray to the comb. In a third step ( figure 5c ), the main arm rises further to lift the tray until the closing of the clamp begins. In a fourth step, the clamp is closed ( figure 5d ) on the upper edge of the bin; this step can be performed continuously during lifting. In another embodiment, the beginning of the closure of the clamp is triggered by an abutment position of the lift cylinder.

In a second phase, which can only be triggered by the automatism when the first phase is completed, the bin is started ( figure 5e ) then we complete the rotation of the tank ( figure 5f ) using an additional jack. This rotation movement by additional cylinder is sequenced: this rotation starts only when the main arm is in the off position, this stop position automatically triggering the rotation by the additional cylinder 71.

The tilt angle during this second phase (between the positions of Figures 5e and 5f ) is about 90 ° (see the angle between the dotted line on the figure 5e and the one on the figure 5f ) to reach an emptying angle of about 42 ° (see angle ω (omega) on the figure 5f ). This angle is significantly lower than in most existing systems; it allows easier, faster tilting, with less wear, and is particularly suitable for heavy bins. This lower tilting angle of 90 ° is achieved through a lifting system that ensures a rise that is not completely vertical, but which nevertheless has a footprint (functional area) reduced.

The emptying cycle of the waste container is then completed by the reverse tilting and descent of the container (not shown in the figures); the container is placed on the ground at the same place where it was apprehended by the comb. The removal of the container is "flat" over its entire surface intended to be in contact with the ground, without risk of tipping.

In the lifter according to the invention, the auxiliary arm or arms 65, 66 are intended to adjust the inclination of the armature about the axis A2 so that the perpendicular to the axes A2 and A4 makes an angle (a24 ) between -15 ° and -10 ° relative to the vertical when the main arm (s) are in the low position, and so that the perpendicular to the A2 and A4 axes makes an angle (a24) between 20 ° and 25 ° when the main arm or arms are in the up position. This angle is negative when A14 is in front of A12 (see figure 5a ) and positive when A14 is behind A12 (see figure 5f ).

The figure 6 gives another description of the kinematics of the hoist container according to the invention. The figure 6a corresponds to the figure 5a . The figure 6b corresponds to the figure 5b . The Figure 6c corresponds to the figure 5e ; it shows the system in the lifting position of the main arm 64, the comb 68 lifting the upper edge of the tray. The figure 6d corresponds to the figure 5f .

The Figure 6c shows the line that describes the rear edge 181 of the tray 180 rows of lifting: we note that its rise is almost vertical. This is an important aspect that avoids the risk of crushing the ripper against an obstacle behind the BCD. However, it is not totally vertical, and this is advantageous, as will be explained below.

The height of the high point of the tray in tilted position is typically between 170 and 200 cm with respect to the surface of the ground 190, preferably between 180 cm and 190 cm, while it is of the order of 120 to 130 in most systems used. The height of the comb in the gripping position of a standard tray is always between 80 cm and 110 cm.

The figure 7 gives yet another description of the kinematics of the hoist container according to the invention. The figure 7a corresponds to the figure 5a . The figure 7b corresponds to the figure 5b . The Figure 7c corresponds to the figure 5e . The figure 7d corresponds to the figure 5f . The auxiliary arm 65 defines the angle of the chair relative to the ground 190. According to the invention, in the engagement position of the container gripping system ( Figures 7a and 7b ), the angle σ3 is between -5 ° and + 5 °. This ensures a quasi-vertical rise of the container lifter up to the gripping height of the container, allowing a secure grip (by a comb gripping system, as in the figures, or by another system) and a safe removal of the container. container after emptying. More particularly, in the low grip position ( figure 7a ), the angle σ3 is advantageously between 0 and -5 °, and in the high gripping position ( figure 7b ) between 0 ° and + 5 °.

It can be seen that the lifting device system according to the invention allows a quasi-vertical rise and a tilting close to the rear wall of the caisson 2 (here: close to the door 45). This has an advantage to the climb (the initial climb almost vertical facilitates the gripping of containers of different sizes) and the descent (the removal of the container is done flat, for large containers on the four wheels, which excludes any risk tipping the container).

However, the rise is not totally vertical, and this has the advantage that the container is already in an inclined position ( Figure 7c ) when the final tilting movement is triggered ( figure 7d ). Thanks to the invention, it is therefore possible to configure the container lifter so that in the lower position of the main arm or arms, the frame - and thus the chair is inclined so that the top of the chair is in back of the bottom of the chair. Thus, the top of the chair can nest more easily with the top of the container. In addition, thanks to the invention, it is possible to configure the container hoist so that in the high position of the main arm or arms, the armature is inclined so that the top of the armature is advanced relative to its bottom, thus priming the tipping of the container. Thus, the pivoting of the chair relative to the frame can be reduced to about 90 °.

This system lifts containers to reduce the size of the functional area, and it lighten the tipping system for heavy containers. When the container reaches its high position, it is very close to the emptying area, and it is useless to bring it closer to the bucket before tipping it.

As illustrated on the figure 8 , the container hoist 3 according to the invention can be used both in the rear part of the bucket (rear loader) and on the side of the bucket (side loader bucket, also called by the person skilled in the art a side loader dump), without modification of the design of the container hoist 3; this increases its versatility.

As illustrated on the figure 9 , and this applies as well to its rear mounting as to its side mounting, the lifter according to the invention can be mounted on standard commercial vehicle chassis having, in an advantageous embodiment, typically a height of the upper face of the chassis side members approximately 800 mm from the ground 190.

In a particular embodiment, which is particularly suitable for lateral mounting, the container lifter is dimensioned so as to allow emptying the container 180 to a minimum height of 2200 mm (parameters H3) while being compact in its low position. (stowed position when the vehicle moves) since its high point is at most 1400 mm (parameter H2).

In general, the container hoist is advantageously dimensioned so as to keep a space under the hoist container 3, called "ground clearance" (parameter H1 illustrated on FIG. figure 9 ) sufficient to ensure a safe running (H1 between 280 mm and 320 mm and preferably between 280 mm and 300 mm). (It should be noted that on the figure 9 , the tires of the vehicle are not represented.) This is obtained by a geometric arrangement in which the axis of rotation A15 is above the axes A12 and A14. In addition, when in the stowed position (lowest position), the depth of the hoist according to the invention is less than 600 mm, and preferably less than 580 mm; typically it is between 550 mm to 600 mm. This allows the container hoist 3 to be housed behind the vehicle or on the side of the vehicle without exceeding the size of the vehicle.

Used in a rear-loading body, the container hoist 3 according to the invention allows both the manual loading by the gate 52 at a height of about 1400 mm to 1500 mm from the floor 190, to minimize the door-to-door false rear of the vehicle and facilitate the emptying of the box 2 by gravity without interference with the lifter 3.

Claims (17)

1. Container lifter (3) for a rear loading waste collection bin, comprising:

   - at least one main arm (63, 64) intended to be pivotably mounted on a frame (4) about a first right-left axis, called axis A11, intended to assume a low position and a high position relative to a low-high direction,

   - a reinforcement (61, 62) pivotably mounted on the main arm (63, 64) about a second right-left axis, called axis A12,

   - a seat (60) mounted on the reinforcement (61, 62) and intended to receive a container (180) so as to raise same,

   - at least one auxiliary arm (65, 66) intended to be pivotably mounted on the frame (4) about a third right-left axis, called axis A13, and pivotably mounted on the reinforcement about a fourth right-left axis, called axis A14, with the distance between the axes A12 and A14 (D24) being greater than the distance between the axes A11 and A13 (D13),

   characterised in that the seat (60) is pivotably mounted on the reinforcement (61, 62) about a fifth right-left axis, called axis A15, which is located above the axis A12, and intended to selectively take a position pressed against the reinforcement between the low position and the high position of the main arm or arms, and a discharge position when the main arm or arms are in high position, wherein the seat (60) has pivoted about the axis A15, in such a way that the container (180) received on the seat (60) has also pivoted about the axis A15 and can be emptied of its contents.
2. Container lifter (3) according to claim 1, wherein the distance between the axes A12 and A14 (D24) is greater than by at least 10% of the distance between the axes A11 and A13 (D13), preferably by at least 20%, and more preferably by at least 30%, and/or wherein the distance between the axes A13 and A14 (D34) is greater than the distance between the axes A11 and A12 (D12), and/or wherein the distance between the axes A13 and A14 (D34) is greater than by at least 5% of the distance between the axes A11 and A12 (D12), preferably by at least 104, and/or wherein the axis A11 is located above the axis A13, and wherein the axis A12 is located above the axis A11.
3. Container lifter according to any of claims 1 to 2, wherein the distance between the axes A11 and A12 (D12) is at least 60 cm, and preferably at least 70 cm.
4. Container lifter according to any of claims 1 to 3, wherein, when the main arm or arms (63, 64) are in low position, the axis A11 is above the axis A12, and wherein, when the main arm or arms (53, 64) are in high position, the axis A12 is above the axis A11, and wherein, preferably, when the main arm or arms (63, 64) are in low position, the perpendicular to the axes A11 and A12 forms an angle (delta12) with a front-rear direction between - 50° and -75°, wherein, when the main arm or arms (63, 64) are in high position, the perpendicular to the axes A11 and A12 forms an angle with the front-rear direction between 50° and 75°.
5. Container lifter according to claim 4, wherein, when the main arm or arms (63, 64) are in low position, the angle between the perpendicular to the axes A11 and A12 and the perpendicular to the axes A13 and A14 is between 0 and -5°, and wherein, when the main arm or arms (63, 64) are in high position, the angle between the perpendicular to the axes A11 and A12 and the perpendicular to the axes A13 and A14 is between 10° and 20°, and preferably between 12° and 18°,
6. Container lifter according to any of claims 1 to 5, wherein the auxiliary arm or arms (65, 66) are intended to adjust the inclination of the reinforcement (61, 62) about the axis A12 in such a way that the perpendicular to the axes A12 and A14 forms an angle (a24) between -15° and -10° in relation to the vertical when the main arm or arms are in low position, and in such a way that the perpendicular to the axes A12 and A14 forms an angle (a24) between 20° and 25° when the main arm or arms are in high position.
7. Container lifter according to any of claims 1 to 6, wherein the rotation of the seat (60) for tipping the container (180) is achieved by using at least one additional cylinder (71, 72).
8. Container lifter according to any of claims 1 to 7, characterised in that in the engaging position of the grasping system of the container, the angle (σ3) defined by the angle between the line passing through the axes A13 and A14 on the one hand, and A11 and A12 on the other hand, is between -5° and +5°.
9. Waste collection bin (1) comprising:

   - a frame (4),

   - a propulsion system according to a rear-front direction,

   - a caisson (2) received on the frame and intended to store the content of containers (180),

   - a container lifter (3) according to any of claims 1 to 8, mounted on the frame (4),
10. Waste collection bin (1) according to claim 9, characterised in that said container lifter (3) is mounted at the rear of the caisson (2) or on a side of the caisson (2).
11. Waste collection bin (1) according to claim 9 or 10, characterised in that the distance H1 between the low point of the container lifter (3) and the ground (190) is at least 280 mm and preferably between 280 mm and 320 mm, and more preferably between 280 mm and 300 mm.
12. Waste collection bin (1) according to any of claims 9 to 11, characterised in that in stored position, namely the lowest position, the depth of the container lifter (3) is less than 600 mm, and preferably less than 580 mm.
13. Method for emptying a container (180) using a container lifter according to any of claims 1 to 8, comprising two separate phases of mounting and of tipping, in which method:

    a) in a first phase, the main arm (63, 64) is raised pour hook the container (180) onto a comb (68), then the main arm (63, 64) is raised further in order to raise the container (180) until the beginning of the closing of a clamp (67), then the clamp (67) is closed onto the upper edge of the container (180),

    b) in a second phase, the rotation of the container (180) is initiated then the rotation thereof is achieved using an additional cylinder (71, 72).
14. Method of emptying according to claim 13, wherein said rotation of the container (180) by additional cylinder (71, 72) is initiated only when the main arm (63, 64) is in the stopped position, with this stopped position automatically triggering the rotation by the additional cylinder (71, 72).
15. Method according to claim 13 or 14, wherein the angle of tipping during said second phase is about 90° in order to reach an angle of inclination at emptying of about 42°.
16. Method according to any of claims 13 to 15, wherein in the first phase, the closing of the clamp (67) is executed continuously during the lifting.
17. Method according to any of claims 13 to 15, wherein in the first phase the beginning of the closing of the clamp (67) is triggered by an abutment position of the lifting cylinder.

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