WO1999002433A1

WO1999002433A1 - Method and device for emptying refuse containers in a collecting container

Info

Publication number: WO1999002433A1
Application number: PCT/EP1998/004211
Authority: WO
Inventors: Haiping Zhang
Original assignee: Zöller-Kipper GmbH
Priority date: 1997-07-09
Filing date: 1998-07-07
Publication date: 1999-01-21
Also published as: HUP0003094A2; AU8973998A; ZA986080B; DE19729297A1; SK185599A3; DE19729297C2; BR9815516A; JP2002509509A; CZ9904140A3; PL337905A1; EP0994816A1; HUP0003094A3; TR199903247T2

Abstract

A method and a device for emptying large and small refuse containers as hitherto, without requiring a reduction in the container weight and emptying speed and with better use of the pump or pressure fluid system power. According to said method, the maximum power to be provided by the pump Lmax = Q.P is calculated either to generate the maximum pressure required for emptying large refuse containers: P = Pmax with Q < Qmax, or to provide the maximum volume flow required for emptying small refuse containers: Q = Qmax with P < Pmax, and pressure Pmax required for emptying small refuse containers is converted into a high volume flow, or volume flow Qmax required for emptying large refuse containers is converted into a high pressure. In addition to said pump (3), said device comprises at least one additional pressure fluid tank (100) which may be connected to the pressure fluid motor (14a, 14b) for emptying small refuse containers. According to an alternative embodiment, two pressure fluid motors (15a, b, 19a, b), which may be coupled for emptying large refuse containers, are mounted in parallel for every individual lifting and tipping or only tilting device.

Description

Method and device for emptying waste containers in a collecting container

description

The invention relates to a method for emptying garbage containers according to the preamble of claim 1. The invention also relates to a device according to the preamble of claim 8 and claim 16.

Such lift and tilt devices are known for example from EP 0 010 719 or EP 0 423 682. With each single-stroke tipping device, small waste containers (eg with a capacity of 240 l) can be emptied independently of one another. Both lifting and tipping devices can also be connected hydraulically and / or mechanically to form a so-called combination operation in order to empty large waste containers (for example with a capacity of 1.1 m ³ ). For this purpose, the receiving devices of the single-stroke tilting devices are designed for the joint detection of such a large waste container.

In the case of a single tilting device, as a rule only a single pressure medium motor is provided, while in the case of a single lifting and tilting device a pressure medium motor is usually provided for the lifting phase and a pressure medium motor for the tilting process. In combined operation, the respective pressure medium motors are simultaneously pressurized by a common pump. For safety reasons, the emptying process in the case of large waste containers must run more slowly during the emptying process than is permitted for the small waste containers. However, when emptying large waste containers, a much greater pressure must be applied in the pump or the pressure medium system than is necessary when emptying the small waste containers.

The pump output must be adapted to these requirements.

On the one hand, the pump for emptying large waste containers must deliver a correspondingly large pressure Pmax because of the large weight, the volume flow Q <Qmax in the pressure medium motor being lower in comparison to individual operation. Conversely, when emptying small waste containers for a correspondingly high emptying speed, a large volume flow Qmax at a lower pressure P <Pmax must be made available. This means that in order to meet both requirements, the pump previously had to be equipped with an output Lmax = Qmax ^• Pmax, whereby the common pump was oversized insofar as l ^ = Qmax ^• P (power requirement when emptying small waste containers) or 1 ^ = Q ^• Pmax (power requirement when emptying large waste containers) is smaller than the power Lmax.

This situation is shown in FIG. 1 for an example Pmax = 150 bar and Qmax = 36 1 / min. The hatched areas illustrate the excess power provided by the pump but not used.

This problem can be partially solved by a controllable pump, but it is more expensive than a non-controllable pump and also consumes more energy. In the case of individual lifting and tipping devices which have a pressure medium motor for the lifting process and a pressure medium motor for the tilting process, the delivery quantity suitable for the lifting movement for the tilting process, which can run faster, can be too small in the case of individual operation. This problem can be eliminated by using several flow control valves or proportional valves, which, however, is complex and means additional energy expenditure.

The object of the invention is a method with which the emptying of small and large garbage containers can be carried out as before without loss of container weight and emptying speed with better utilization of the performance of the pump or the pressure medium system. It is also an object of the invention to modify the device so that a less powerful pump can be used.

This object is achieved with respect to the method with the features of patent claim 1 and with respect to the device with the features of patent claims 8 and 16.

The term "pump" is understood to mean the pressure medium pump associated with an individual lifting / tilting device or individual tilting device or the pump common to both individual lifting / tilting devices or individual tilting devices.

The invention is based on the knowledge that the maximum pump capacity Lmax = Q ^• P, which must be made available to empty small waste containers or large waste containers, only has to be as large as it is either for emptying small waste containers or for Large waste containers must be emptied. When emptying small waste containers, a large volume flow at comparatively low pressure is important in order to be able to achieve a correspondingly high speed during the dumping process.

When emptying large containers, on the other hand, a high pressure with a small volume flow is required to be able to move the large weight at a correspondingly low speed.

According to the two alternatives according to the invention for the design of the pump, one can orientate himself either on the maximum required pressure Pmax or on the maximum required volume flow Qmax.

If according to the first alternative according to the characteristics al. a2 If the pump output is based on the power requirement for emptying large waste containers, i.e. on the maximum pressure required, then Lmax = Q ^• Pmax. So that no pump power is wasted, the power Lmax = Q ^• Pmax should also be used for emptying small waste containers. Since the pressure is too high and the volume flow is too low for this, the pressure Pmax for emptying small waste containers is converted into an increased volume flow. For this purpose, an additional measure is provided in the pressure medium system. In this case, the pressure medium motor - this can be the tilting pressure medium motor or a pressure medium motor for lifting and tipping - is preferably not only fed by the pump but also additionally by a reservoir, the excess pressure preferably being used to push the pressure medium out of the reservoir. This additional pressure medium made available from the reservoir increases the volume flow to the level required for emptying small waste containers.

When emptying small waste containers, the pressure medium motor is preferably acted upon by a volume flow Q _D , which is derived from that of volume flow Q supplied to the pump and a volume flow Q _R supplied by the reservoir is formed.

When emptying small waste containers, the pressure medium motor is preferably subjected to the pressure P _D = Pmax as when emptying large waste containers.

This first alternative, in which work is carried out at high pressure Pmax, has the advantage that less pressure medium has to be pumped overall than if the output is based on the high volume flow. The line cross-sections can therefore be made smaller and smaller units are sufficient for cooling the pressure medium. Smaller pumps have the additional advantage that the noise level is significantly lower.

According to the second alternative according to the features b1, b2, the pump output is based on the volume flow Qmax, that is to say on the power requirement for emptying small waste containers. In this case too, the bulk waste container should be emptied with the same pump output Lmax = Qmax ^• P, so that no pump power is wasted. However, the volume flow is too high for this and the force required is too low. In this case too, an additional measure must be taken in the pressure medium system in order to convert the pressure and volume flow values of the pump accordingly. The solution according to the second alternative therefore provides that the volume flow coming from the pump is preferably distributed to at least n = 2 pressure medium motors, ie at least two tilting pressure medium motors or at least two pressure medium motors, which are provided both for lifting and for tipping.

When emptying large waste containers, a pressure P _D is preferably present at each of these n pressure medium motors, the pressure for emptying required force F _G = Z _^ F, where Fj is the force applied to the hydraulic motor i.

Advantageously, when emptying large waste containers, the n pressure medium motors are acted upon with the same volume flow Q _D = Qmax as is the case with a pressure medium motor when emptying small waste containers.

Although the first alternative - orientation of the pump output to the maximum pressure Pmax - is preferred, the second alternative, in which the pump output is designed for a high volumetric flow, has advantages in that the components have a longer service life because of the lower pressure .

Both embodiments can be carried out with side-by-side lifting and tipping devices, the solution according to the invention being independent of whether the single lifting and tipping device or the single tilting device can be operated independently of one another. In the case of individual lifting and tipping devices which can be operated independently of one another, the individual lifting and tipping devices or individual tipping devices are generally only connected hydraulically when emptying large waste containers. It is also possible to provide both individual lifting and tipping devices or single tipping devices with a continuous receiving comb, with which both large waste containers and one or two small waste containers can be emptied.

For the lifting phase, it does not matter whether large waste containers or small waste containers are emptied. The decisive factor is the tipping-in phase, which can be carried out faster with small waste containers than with large waste containers. It is also possible to have small waste containers and large waste containers respectively to be lifted just as quickly and to be delayed by the solutions according to the invention in the case of large waste containers or to be accelerated in the case of small waste containers.

The device for carrying out the first method alternative according to the features al, a2 is characterized in that, in addition to the pump, at least one additional pressure medium supplying reservoir is provided, which is used to empty small waste containers and the pressure medium motor - tilting pressure medium motor or pressure medium motor for lifting and tipping - is switchable.

The rod side of the pressure medium motor preferably forms the reservoir. The connection of the rod side of the pressure medium motor is known per se (see Backe and Murrenhoff, Inst, for fluid power drives and controls of the Rheinisch Westfälische Technische Hochschule Aachen, 10th edition 1994, pages 318-320) and is referred to as rapid traverse with differential cylinder. However, there is no indication in this literature reference to use this circuit for lifting and tipping devices or tipping devices for emptying garbage containers, or to use this circuit for converting high pressure into a high volume flow for the emptying process of small garbage containers.

The rod side is advantageously connected to the piston side of the pressure medium motor via a connecting line. According to a further embodiment, the rod of the pressure medium motor can be connected to the piston of an auxiliary pressure medium motor, the pressure side of which forms the reservoir.

In this case, the pressure side of the auxiliary pressure medium motor is also connected to the piston side of the pressure medium motor via a connecting line in which a changeover valve is arranged. According to one embodiment, a changeover valve, in particular a 3/2-way valve, can be arranged in this connecting line. If the reservoir is to be switched on, this changeover valve is brought into the through position so that the pressure medium located on the rod side of the pressure medium motor or on the piston side of the auxiliary pressure medium motor can be diverted via the connecting line to the piston side by the piston movement.

According to another embodiment, a check valve can be provided in the connecting line, which blocks the connecting line in the direction from the piston side to the rod side and is permeable in the reverse direction when a correspondingly high pressure is applied. In addition, the rod side is connected to the pressure medium tank via a 2/2-way valve with check functions. Depending on the position of the changeover valve, the pressure medium on the rod side is either directed into the pressure medium tank or onto the piston side of the pressure medium cylinder when the piston of the pressure medium cylinder is actuated.

According to a further embodiment, the reservoir can also be an additional pump.

The device for carrying out the second method alternative according to the features b1, b2 provides that at least two pressure medium motors. These are tilting medium motors or pressure medium motors, which are provided for lifting as well as for tipping, are arranged in parallel and can be interconnected for emptying large waste containers.

In this embodiment, the actuating sides of the pressure medium motors are connected to one another via a connecting line, in which a changeover valve, in particular a 2/2-way valve with a check function, is preferably also arranged. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings:

Show it:

FIG. 1 shows a performance diagram according to the prior art,

FIG. 2 shows a performance diagram according to the first procedural alternative,

Figure 3 is a performance diagram according to the second

Procedural alternatives,

Figure 4 circuit diagram for two independently and jointly operated

Single lift and tilt devices according to the first alternative; Emptying small waste container; Tipping process,

Figure 5 circuit diagram for two independently and jointly operated

Single lift and tilt devices according to the first alternative; Emptying process for large waste containers; Tipping process,

FIG. 6 shows a circuit diagram corresponding to FIG. 4a with changeover valve according to a further embodiment,

FIG. 7 circuit diagram for two individual lifting and tipping devices with a continuous mounting comb,

FIG. 8 shows a circuit diagram for two individual lifting and tipping devices, each with a pressure medium motor for lifting and tipping; Emptying small waste containers and Figure 9 for two independently and jointly operated single

Lift and tilt devices according to the second alternative method; Emptying process for large waste containers; Dumping process.

FIG. 2 shows the performance diagram according to the first procedural alternative. The power requirement for emptying large waste containers is used to design the pump output Lmax = Q _G ^• Pmax. The pump performance is indicated by the hatched area. The volume flow Q _{G is} too low for emptying small waste containers, and a drain Pmax of this magnitude is not necessary. Depending on the size of small waste containers to be emptied, a volume flow Q _K1 or Q ^ is required, for example. With the same power, which is predetermined by Lmax, this results in corresponding pressures P _K1 and P, ^. The services required for emptying small waste containers are shown by the dash-dotted lines for the two cases mentioned. The corner points of the associated rectangles move on an envelope 1. From this it can be seen that the higher the desired volume flow, the lower the available drain. How the pressure Pmax can be converted into a higher volume flow Q is explained in connection with FIGS. 4 to 8.

FIG. 3 shows the performance diagram for the second procedural alternative, which is based on the maximum volume flow Qmax for emptying small waste containers. The associated drain P _κ is accordingly lower. The pump output Lmax is also identified by the hatched rectangle. This high volume flow with the associated lower drain P _κ must be converted into a large pressure P _{G 1} or P _G2 with a correspondingly lower volume flow Q _G1 or Q _G: for emptying large waste containers become. This in turn depends on the size or weight of large waste containers to be emptied.

In Figure 3, these two options are shown by the solid lines. The corner points of the associated rectangles move on the envelope 2. It can be seen that the volume flow Q decreases correspondingly as the drain increases. How the volume flow Qmax can be converted into a higher drain P is explained in connection with FIG. 9.

FIG. 4 shows a hydraulic circuit diagram for two lifting and tilting devices arranged next to one another. The draining system shown has two draining circles A and B, which are assigned to the two lifting and tilting devices. The components of the drain medium circuits correspond, the reference numerals of the components of the pressure medium circuit A being identified by a and the components of the drain medium circuit B being identified by b.

Each drain center circuit A, B has a lifting cylinder 14a, 14b and a tilting or swiveling cylinder 15a, 15b. A common pressure medium tank 1 is provided for both drain medium circuits A and B and is connected to a drain medium pump 3 via a feed line 2. The outlet of the drainage medium pump 3 is connected to a flow divider 4 which has two flow divider branches 5a and 5b. This is followed by a draining agent supply line 6a, 6b, in each of which a control valve 7a, 7b is arranged. This is, for example, a three-way, three-position valve (3/3 valve). A return line 8a, b is also connected to the control valve 7a, b.

The draining agent feed line 6a, 6b merges into a draining agent feed line 11a, 11b, which branches in a first feed branch 12a, b and a second feed branch 13a, b. The second feed branch 13 a, b is on the Drackmittelmotor 14a, 14b connected, which is responsible for the lifting process. The first feed branch 12a, b opens out on the piston side 16a, 16b of the drain medium motor 15a, 15b, which is responsible for the tilting process.

Beneath the piston 18b is the rod side 17b of the drain motor 15b, which in the embodiment shown in the drain circle B forms the reservoir 100. This reservoir 100 is connected via a connecting line 22b to the piston side 16b of the drain motor 15b. A changeover valve 24b is arranged in this connecting line 22b. It is a 3/2-way valve. A return line 23b, which opens into the pressure medium tank 1, is connected to this changeover valve 24b.

Both drain medium circuits A and B are connected via a connecting line 50 between the drain medium feed lines 11a and 11b. In this connecting line 50 a shut-off and changeover valve 10 is arranged, with which those sections of the two drainage agent circuits A and B can be connected in which the drainage agent motors 14a, b and 15a, b are arranged.

FIG. 4 shows the switching position of the valves for the lifting and tipping-in process of small waste containers. After the lifting process by means of the lifting cylinder 14b has ended, the piston side 16b of the draining agent motor 15b is acted upon by draining agent supplied by the pump 3 via the flow divider 4. As a result, the piston 18b is moved downward, as a result of which the draining agent in the reservoir 100 is pressed out of the volume on the rod side. The changeover valve 24b is in the through position with respect to the connecting line 22b, so that the draining medium is pumped out of the reservoir 100 into the piston side 16b of the pressure medium cylinder 15b. The one supplied by pump 3 In this way, Drack is converted into a higher volume flow Q, which leads to a correspondingly rapid movement of the piston 18b.

The left middle drain circuit A on the left side of the illustration in FIG. 4 can be designed in exactly the same way as the middle pressure circuit B.

In the illustration shown here, however, a further embodiment is shown in the draining center circuit A, in which the rod of the piston 18a is connected to the rod 25a of an auxiliary pressure medium motor 26a. The piston side 28a of this auxiliary pressure medium motor 26a forms the reservoir 100 in this case. This auxiliary pressure medium motor 26a is dimensionally smaller than the pressure medium motor 15a, so that when the piston 18a is acted upon, the piston 27a is pressed downward. The draining agent in the reservoir 100 is also fed via a connecting line 22a to the piston side 16a of the draining agent motor 15a. For this purpose, a changeover valve 24a, i.e. For example, a 3/2-way valve is arranged.

If the emptying of a small waste container is to take place, the piston 18a is pressed down during the tipping-in phase, and at the same time the draining agent in the reservoir 100 is pumped into the piston side 16a of the pressure medium cylinder 15a, so that an increase in volume flow is generated.

FIG. 5 shows the same circuit diagram as in FIG. 4, but with the difference that here the switch position for the emptying process of large waste containers is shown, namely for the tipping-in process. In the connecting line 50, the shut-off and changeover valve 10 has been switched from its shut-off position to the connecting position, so that the two, the drainage motors 14a, 14b, 15a. 15b containing sections of Drackmittelkreise A and B, are interconnected. In the embodiment shown here, the valve 7b is switched to continuity and the valve 7a is interrupted. This means that the draining agent supplied by the pump 3 is only supplied via the draining agent feed line 6b and is then distributed to the two sections of the draining agent circuits A and B via the connecting line 50. After the lifting process via the draining agent motors 14a and 14b is completed, the draining agent motors 15a and 15b are acted upon by draining agent. In this case, since the draining agent in the reservoir 100 should not be deflected onto the piston side 16a, 16b of the draining agent motors 15a, 15b, the changeover valve 24a, 24b located in the connecting line 22a, 22b is in the through position with respect to the return line 23a. 23b so that the draining agent can flow back into the draining agent tank 1. The full drain Pmax supplied by the pump is thus available on the drain middle cylinders 15a, 15b. The volume flow on the piston side of the draining medium motors 15a, 15b is thus not increased by the discharge of the pressure medium located in the reservoir 100.

Another embodiment is shown in FIG. This circuit diagram differs from the circuit diagrams according to FIGS. 4 and 5 in that a check valve 30a, b is arranged in the connecting line 22a, b. This check valve blocks the direction from the piston side to the rod side and is permeable in the direction from the rod side to the piston side of the drain motor 15a, 15b. The connecting line 22a, 22b is connected to the return line 23a, 23b, in which a changeover valve 31a, b with a check function is located. If the draining agent from the reservoir 100 is required for increasing the volume flow on the piston side 16a, b, this changeover valve 31a. b brought into the locked position shown. The draining agent can then via the connecting line 22a. b and the opening check valve 30a, b from the reservoir 100 to the piston side 16a. b are pumped around. If that Discharge agent when emptying large waste containers from the reservoir 100 is not required and is to be drained into the pressure medium tank 1, the changeover valve 31a, b is brought into the through position, so that the pressure medium can flow off via the return line 23a, b.

In the embodiment shown in FIG. 7, the valves 7a, b have different tasks. The valve 7a is designed as a 3/2-way valve and is only used for switching, while the valve 7b as before as a 3/3-way valve controls the work flow of the device with H = lifting, N = neutral, S = lowering. In the position of the valve 7a shown, large containers are emptied at a lower speed because half the volume flow of the pump is returned to the tank 1 via the valve 7a. To empty the smaller containers, the valve 7a is brought into its second position, so that the entire volume flow of the pump 1 is available via the lines 6a, b and the speed of the tipping is almost doubled. The functions of the valves 30a, b and 31a, b are analogous to the description of FIG. 6 of the drawing. However, these valves can also be replaced by valves 24a, b.

Another embodiment is shown in FIG. 8, in which only one drainage cylinder 15a, 15b is provided for both lifting and tipping. The functioning of the other components of the drainage medium circuits A and B corresponds to that of the embodiments described above. A targeted control of the desired speed can be carried out by temporarily switching 24a or b on or off.

FIG. 9 shows a circuit diagram for the implementation of the second alternative method. In contrast to the circuit diagrams described above, two tilting medium motors 15a, b and 19a, b are provided. These two pressure medium motors 15a, b and 19a, b are via one Connection line 40a, b connected in parallel. This means that the draining agent supplied by the pump 3 can be divided between the two piston sides 16a, b and 20a, b if large waste containers are to be emptied. For this purpose, the changeover valve 41a, b, which is located in the connecting line 40a, b, is brought into the open position. If the second cylinder 19a, b is to be decoupled in order to empty small waste containers, the changeover valve 41a, b is brought into the non-return position, as can be seen in FIG. 9.

If pressure medium is applied to both pressure medium motors 15a, 15b and 19a, 19b, the force applied to the two drain medium motors is added, while the tilting speed is reduced by half. The total force and also the two volume flows can be varied accordingly by varying the size of the draining agent motors.

reference numeral

1 draining agent tank

2 feed line

3 pump

4 current dividers

5a, b current divider branch

6a, b Drackmittelvorlaufleitung

7a, b control valve

8a, b draining medium short-circuit line

10 shut-off and switching valve

11a, b draining agent supply line

12a, b first supply branch

13a, b second supply branch

14a, b lifting medium engine

15a, b mid-tilt motor

16a, b actuation side

17a. b rod side

18a, b pistons

19a, b second tipping medium engine

20a, b actuation side

21a, b pistons

22a, b connecting line

23a, b return line

24a, b changeover valve

26a. b Auxiliary pressure medium motor

25a, b rod of the auxiliary pressure medium motor

27a. b Auxiliary hydraulic engine piston

28a, b piston side of the auxiliary pressure medium motor

30a, b check valve

31a, b changeover valve with check function a, b connecting line a, b changeover valve

Connecting line

reservoir

Claims

claims

1.Procedure for emptying garbage containers by means of two single-stroke tilting or tilting devices arranged next to one another, which can be operated for emptying small and large waste containers a pressure medium circuit equipped with a medium pressure motor (tilting medium motor or lifting and tilting medium motor) is conveyed, characterized in that

that the maximum power to be supplied by the pump is Lmax = Q ^• P either

al. at the maximum drain required for emptying large waste containers P = Pmax with Q <Qmax or

bl. is aligned with the maximum volume flow Q = Qmax required for emptying small waste containers with P <Pmax, and that

a2. the Drack Pmax for emptying small waste containers into an increased volume flow or

b2. the volume flow Qmax for the emptying of

Large waste container is converted into an elevated drain.

2. The method according spoke 1. characterized in that in the case Lmax = Q ^• Pmax when emptying small waste containers, the drain motor is fed by the pump and a reservoir and in the case Lmax = Qmax ^• P when emptying large waste containers, the draining agent supplied by the pump is distributed to at least n = 2 draining agent motors connected in parallel.

3. The method according spoke 1 or 2 according to the alternative al, a2, characterized in that when emptying small waste containers the draining agent is pressed out of the reservoir using the excess drack.

4. The method according to any one of claims 1 to 3 according to the alternative al, a2, characterized in that when emptying KleinmüUbehältem the drain medium motor is acted upon with a volume flow Q _D , which comes from the volume flow Q supplied by the pump and one supplied by the reservoir Volume flow Q _{R is} formed.

5. The method according to any one of claims 1 to 4 according to the alternative al, a2, characterized in that the draining medium motor is acted upon with the same drain P _D = Pmax when emptying small garbage containers as when emptying large garbage containers.

6. The method according spoke 1 or 2 according to the alternative bl, b2, characterized in that when emptying large waste containers, a drain P _D = P is applied to the n drain medium motors, the force required for the discharge F _G = ^ F, is, where F is the force applied to the drain motor i.

7. The method according spoke 1, 2 or 6 according to the features bl, b2, characterized in that when emptying large waste containers, the n drain motors with the same volume flow Q _D = Qmax are acted upon, such as a drain medium motor when emptying small waste containers.

8.Device for emptying small and large waste containers into a collecting container with two individual tilting or lifting-tilting devices arranged next to one another, which are connected to a pressure medium system with a pressure medium tank, valve switch and at least one drainage medium motor (tilting / cracking medium motor or lifting and tilting pressure motor) with at least one lifting / tilting device a pump supplying draining agent are connected, characterized in that, in addition to the pump (3), at least one additional reservoir (100) delivering draining agent is provided which can be connected to the draining agent motor (14a, 14b) for the emptying of small waste containers.

9. The device according spoke 8, characterized in that the rod side (17a, 17b) of the drain motor (14a, 14b) forms the reservoir (100).

10. The device according spoke 8 or 9, characterized in that the rod side (17a, 17b) of the drain motor with its piston side (16a, 16b) is connected via a connecting line (22a, 22b).

11. The device according spoke 8, characterized in that the rod of the drain medium motor (14a, b) with the piston (27a. B) of an auxiliary pressure medium motor (26a, b) is connected, the pressure side (28a, b) of the reservoir (100) forms.

12. The device according spoke 11, characterized in that the pressure side (28a, b) of the auxiliary pressure medium motor (26a. B) with the piston side (16a. B) of the drain medium motor (14a, b) is connected via a connecting line (22a, b) .

13. The apparatus of spoke 10 to 12, characterized in that a changeover valve (24a. B) is arranged in the connecting line (22a, b).

14. The apparatus according to claim 10 or 12, characterized in that a pressure check valve (30a, b) is arranged in the connecting line (22a, b) and that the reservoir (100) via a changeover valve with check function (31a, b) with the drainage agent tank (1) is connected.

15. The apparatus according spoke 8, characterized in that the reservoir (100) is an additional pump.

16.Device for emptying small and large waste containers into a collecting container with two single tilting or lifting and tilting devices arranged next to one another, which are connected to a draining agent tank, valve switch and at least one draining agent motor (tilting and packing agent motor or lifting and tilting packing motor) per drawer system with at least one drainage and tilting device supplying pump are connected, characterized in that at least two drain medium motors (15a, b, 19a, b) are arranged in parallel per individual lifting and tipping device and can be interconnected for emptying large waste containers.

17. The device according spoke 16, characterized in that the actuating sides (16a, b, 20a, b) of the drain medium motors (15a, b. 19a, b) are connected to one another via a connecting line (40a, b).

18. The device according spoke 17, characterized in that a changeover valve (41a. B) is arranged in the connecting line (40a, b).