ES2261811T3 - CONTAINER RETAINING DEVICE. - Google Patents

Abstract

Device comprises at least one retaining element movably arranged in a filling opening of a collecting container and gripping onto the container in the retaining position to prevent excess tipping, and a drive device acting on the retaining element. The drive device moves the retaining element into a start position releasing the filling opening and holds the retaining element in this position. At least one signal transmitter (51) directly or indirectly connected to the drive device emits a signal to the drive device allowing release of the retaining element during the emptying process when a specific container position is reached or after a certain time period. A clamping device gripping onto the retaining element moves the retaining element after release by the drive device into its retaining position. Preferred Features: At least one further signal transmitter (50) connected to the drive device emits a signal allowing pivoting of the retaining element into the start position when a further specific container position is reached or after a further time period.

Description

Container retention device.

The invention relates to a device for retain containers to empty, especially garbage containers with a capacity of between 80 and 1,100 l, during tilting to the discharge opening of a collecting container with at least a retaining element disposed mobilely in the opening of spill, which in its retained position fits in the container and prevents excessive tipping, and with a mechanism of drive that fits the retained element.

Container retention devices they can be installed on all sides of a collecting container, in special of a collecting container of a collection vehicle trash.

The utility model DE-U-7 817 066 describes insurance against excessive tipping in the lower part of the housing of poured in the form of a stirrup that extends across the entire width of the pouring opening. This stirrup hangs oscillatingly into the pouring opening and rotate into the opening of dumping during the dump of the garbage container. The recovery springs that fit into the stirrup produce support of the reverse tilt movement of the container and take care that the stirrup returns to its starting position.

The inconvenience of this insurance against excessive tipping consists of the stirrup, until reaches its retained position, first slides on the wall of the container, which can cause damage.

Insurance against excessive tipping only It is designed to hold containers of one size. In the case of empty large containers, which must be collected and emptied with a support arm, the edge of the container collides with the stirrup e prevents a tipping of the container.

From EP 577 540 A1 a known container retention mechanism, in which an arm is rotated with a U-shaped elastic band by means of a medium motor pressure, either to the held position or to the position that completely releases the pouring opening, when Tilt a large container with a rotating lid. It is not possible to autonomous adaptation of the container retention mechanism to Different container sizes.

EP 1 052 196 A2 describes a container retention mechanism of the class in question, which it also moves using a medium pressure engine and that is intended for small garbage containers with a capacity of between 80 and 240 l. For large garbage containers, a second fixed container retention mechanism. The mechanism of Retained container for small containers provides for manual translation, to be able to carry out an adaptation to Different containers, sizes and shapes. All movements of the container retention mechanism are executed by the medium pressure motors, activating the spin out by an optical barrier that is operated by a container large to empty, when it reaches the region of the barrier bright.

According to EP 0 857 669 A2, it is known a retention mechanism that features type dampers ball, which hang oscillatingly in the pouring opening and cushioned by a pneumatic spring. Regulators can be turned out of the region of the pouring opening by means of these pneumatic springs, which also receive means pressure, when you want to empty large containers.

Nor does this device envisage taking into account Different container sizes.

The task of the invention is a device of container retention, which protects the container wall from the container to be emptied and with which they can be securely fastened different container sizes in a range between 80 and 1,100 l during the tilting process, without the need to carry pre-select the container size on the device container retention.

This task is solved with a device to retain containers to empty, in which the mechanism of drive to move the retained element is set in a starting position S that releases the pouring opening and to hold in this position, and where you have at least a signal transmitter that is directly or indirectly linked to the drive mechanism and that delivers a signal during the emptying process, in the case of a container position preset or after a preset period of time, for example after the start of the emptying process, to the mechanism of drive to release the retained element. In the element retained fits a tensioning mechanism, which moves the element of retained after release by the mechanism of drive to its respective retained position.

The drive mechanism comprises, according to the drive class, not only the true drive but also supply lines with switches, valves, etc. Preferably the drive mechanism comprises at least one medium pressure engine, especially a medium pressure cylinder pressure that is inserted into a hydraulic circuit with valves of control.

The drive mechanism is used to turn the retained element, preferably from a position of lower standby or exit position A to a starting position S defined. In this resting position the retained element hangs preferably in front of the dust cloths that cover the discharge opening, so that in the case of not using the Emptying mechanism closes the pouring opening. Until no the movement is carried out to the starting position S is not with this also press the dust cloths from the opening pouring into the collecting container, in such a way that the pouring opening is free for the emptying process next.

This independent defined start position S Container size is not abandoned until shortly before reach the tilt position of the garbage container, moving the retention element and the garbage container one towards the other and not standing next to each other to the region of the optimal retention position for the respective container of trash. The retention element finds this way autonomously, in the case of different container sizes, the correct retention position without the need to carry out an adaptation to the container retention device.

Leaving the starting position is activated by means of a signal transmitter that, upon reaching a preset container position, a signal is delivered corresponding to the drive mechanism to release the container retention device. It has been proven surprisingly that the container position is independent of container size, so that you can do without a complicated container detection system.

By means of which a tensioning mechanism produces the secondary turning process, in the case of a longer path between the start position and the retained position, an increasing speed of the retained element is achieved, thereby compensating different tours in the case of different garbage containers
size.

The tensioning mechanism is preferably a spring, especially a traction spring. In the case of a dock tensioned the retained element undergoes acceleration, thereby that the speed increases as the distance to the starting position It is therefore advantageous that the development of container retention device movement be preferably sized according to an average container size. The different sections of the route, which the element of retained in the case of large and small containers to arrive to their position of retention, they are compensated fundamentally by the different speeds of the retention element, which they produce because of the development of the movement.

Although the retained item presents with preference an elastic support, which can be executed for example  as a cylinder or roller and thus dampens the application of the retained element on the container wall, it is advantageous that the drive mechanism act further with braking.

Preferably at least one other is available signal transmitter, which is attached to the drive mechanism and that delivers a signal during the emptying process, in the case of another preset container position or another period of time, to rotate the retained element out to the position of start. By means of this the starting position is not reached until some time before the container hits the position of tilting, such that the drive mechanism only it must be activated for a short time.

The signal transmitter can be a sensor position monitoring arranged in the emptying mechanism, trapdoor switch, receipt signal switch or a transmitter of turning angles. What sensor, switch or transmitter of angles of rotation comes into question as a signal transmitter it also depends on whether it should deliver the authorization signal or the turn signal out, for which for example in the last case the trapdoor switch or the switch is suitable receipt signal The use of signal transmitters already available saves costs, which however does not rule out that naturally additional signal transmitters may also be provided, that the emptying mechanism does not show normally.

The drive mechanism is preferably a pressure medium cylinder that is connected to two ducts of pressure medium, being arranged in a conduit of medium of pressure a check valve. The check valve is preferably arranged in the pressure medium conduit, to through which it could be discharged from the middle cylinder of pressure in the case of loading of the retained element because of the Garbage container in the tilting position.

The device may also be equipped with two retaining elements arranged horizontally one next to other, which in each case have drive mechanisms and own tension mechanisms. Such an arrangement is advantageous if two emptying mechanisms are also available, which They can be operated independently of each other. So corresponding to this the retained elements are also activated of the container retention device independently about With respect to others.

The retention element presents with preference a swing arm, which is mounted on one end of shape rotating and at the other end it has a stop strip padded that extends at right angles. It is a way of Simple and space-saving execution.

They are explained in more detail below. Exemplary embodiments of the invention, based on the drawings.

Here they show:

Figure 1 a drainage mechanism with a container retention device in rest position,

figure 2 the device according to figure 1 with the container retention device in the position of start,

figure 3 the device shown in figure 1 with the container retention device in the position of retained, during the emptying of a large container,

figure 4 the device according to figure 3 with the container retention device in the position of retained, during emptying of a smaller container,

figure 5 the device shown in figure 1 with the container retention device in the position of retained, during the emptying of a large container with a lid scrollable,

Figure 6 a diagram of hydraulic connections with two cylinders of pressure medium for two elements of held,

Figure 7 a retaining device of containers with two retained elements in a representation in perspective.

Figure 1 shows the view side of a drain mechanism 10 with a retaining device  of containers 20 in a side view. An emptying mechanism of this type, which in the form of execution shown here represents a lifting-tilting device, is normally arranged on the back of a vehicle garbage collection (not shown), which presents a container collector 7. This collector container 7 has an opening of dump 5 by which the dumpsters 1 tilt, 1a, 1b, 1c and thus are emptied.

In figure 1 three containers have been drawn of garbage of different size 1, 1a and 1b with folding lid 2 which, with its container edge 4, they are collected on a mechanism of container collection presented in the form of execution here shown a pick-up comb 12, and are fixed in the mechanism of emptying 10 by means of a locking strip 17. The wall of container is located on buttress elements 16. The pick-up comb 12 and buttresses 16 together form a carriage elevator 11 that moves, through a guide of four joints 13 with upper connecting rod 14 and lower connecting rod 15 and corresponding drive motors (not shown), up to the elevated position shown in figure 1.

Once this position has been reached raised, the lift carriage 11 is turned, which is fixed on the shaft of rotation 18 by means of the rotating propulsion mechanism 19, up to the pouring opening 5, as shown in figures 2 and 3.

In the pouring opening 5 hang cloths dust cover 6 of a flexible material which, when the container is tilted  of garbage in the collection container 7, they also turn inwards by retaining element 28. Apart from this it is found in the discharge opening 5 the container retention tank 20, which is arranged on a side wall of the collecting container 7 or in the pouring opening frame 5. The device Retained container 20 has an oscillating arm 23 arranged movably around an axis of rotation 24, at whose end a stop bar 22 is arranged at right angles, the which is provided with an elastic support 26. The oscillating arm 23 with the stop strip 22 together form the retaining element 28.

The container retention device it has a drive mechanism 130 with a cylinder of pressure means 30. Through a lifting arm 25 the cylinder of pressure means 30 fits into retaining element 28, such so that a rotation from this lower resting position is possible or starting position A.

In the case of the position represented in the Figure 1 of the garbage container 1, 1a, 1b is the strip of stop 22 still in this resting position A. In the device of emptying 10 are intended as signal transmitters 50, 51 two transmitters of turning angles, which are located on the connecting rod lower 15 and on the axis of rotation 18. Once it has been taken to carry out the lifting process by means of the guide of four joints 13, as depicted in figure 1, has been produced at the point of articulation 15 'a turn, which is detected by signal transmitter 50. In this position the transmitter of signals 50 delivers a signal to drive mechanism 130, of such that the pressure medium cylinder 30 receives medium of pressure, so that the piston goes out and the element of held 28 is turned to its starting position S, as has been shown in figure 2, until the retaining element 28 makes contact with the stop 9.

When container 1, 1a, 1b has reached the horizontal position represented in figure 2, reacts the signal transmitter 51 which is a transmitter of turning angles, and delivers a signal to the pressure medium cylinder 30, thereby this is connected without pressure, so that the tensioning mechanism 140, which is configured as tension spring 21, rotates the retaining element 28 from its starting position S to the retention position R1, as depicted in Figure 3. Because it is a development of continuous movement of the garbage container 1, 1a, 1b and the drive element held 28 occurs in the horizontal position of the container of garbage 1, 1a, 1b, the garbage container and the stop strip 22 are  move at the same time towards each other and coincide in position of retention R1, which prevents excessive tilting of the container 1. Container 1 makes contact with its wall of container 8 with padded shoulder strip 22.

Figure 4 depicts the same situation as in figure 3, but for two containers 1a and 1b smaller with container walls 8a and 8b. In the case of a Smaller container is the travel segment, which covers the stop strip 22 from the starting position S until reaching the respective retention position R2 or R3, correspondingly higher.

When the moment of operation of the signal transmitter 51 is fitted to container 1, in such a way so that the retaining element 28 reaches the position of retained corresponding R2 at the same time as the wall of container 8b of container 1b, container wall 8 of a larger container 1 would match the element of held 28.

In this case, the process of tipping of the largest container 1, increasing to reach the corresponding retention position the pressure in the pressure medium chamber 34 of the pressure medium cylinder 30 (see Figure 6) and pass the two-way valve 47 to the position of transit, until the held position is reached. If This process increases the retention force. After this the two-way valve 47 returns to the locked position (check valve 147).

The position of tilting of a large container 1c with sliding lid 3. In in the case of these containers the stop strip 22 also rotates to its starting position S. The signal transmitter 51 delivers as before an authorization signal corresponding to the valve 46, which is a 2/2 way valve, and thus authorizes the pressure medium cylinder 30. Container 1c does not make contact with its container wall 8c, but with its sliding lid 3 open with padded strip 22 padded in the position of retained R4.

In figure 6 the simplified hydraulic connection scheme for two cylinders of pressure medium 30, 30a is shown. Two cylinders of pressure medium 30, 30a are needed when the container retention device 20 has two retaining elements 28, which are located next to each other in the pouring opening 5 (see Figure 7). In this case, the emptying mechanism consists of two isolated devices, with which smaller containers can be varied independently of each other. There is also the possibility, with isolated devices of this type, to empty large containers by connection and / or mechanical connection. In the case of emptying smaller containers, the corresponding retention elements are activated independently of each other. In the case of connecting by connection the two emptying mechanisms are also connected by connection at the same time the retention elements of the container retention device, so that they perform the same movements. Because two emptying mechanisms are available, duplicate signal transmitters are also available, which are connected to a common control mechanism 60. A control mechanism 60 of this type can be dispensed with if the signal transmitters they are connected, through corresponding control elements, to the valves 46, 46a associated with the pressure medium cylinders 30, 30a that are part of the actuation mechanisms 130. For simplicity, only the control of the cylinder is explained below. of pressure medium 30, which is equally applicable to the pressure medium cylinder 30a. Correspondingly to this all the components
identical parts of the hydraulic scheme are equipped with the same number; only differ in the additional letter a.

The simplified connection scheme shown in figure 6 it has a pressure medium tank 41 and a pump 40. A control mechanism 60 is also provided to which they are connected signal transmitters 50, 51, 50a and 51a. He control mechanism 60 is electrically connected to pump 40 and to the valves 46, 46a.

As soon as signal transmitter 50 sends a signal to control mechanism 60, pump 40 drives medium of pressure from the pressure medium reservoir 41, through the advance line of pressure medium 42 and the branch of feed 44, to valve 46 that is first in position on the way. By this means pressure medium is fed through from the first pressure medium conduit 45 to the medium medium motor pressure 30, and precisely to the first pressure medium chamber 33, whereby the piston 31 is extracted with its piston rod 32, such that the retaining element 28 moves to its starting position S. As soon as this starting position is reached S and the retention element has reached the top 9, it follows maintaining the pressure medium feed, such that by means of the pressure medium cylinder the retaining element 28 is held in this starting position S.

During the extraction of the piston 31, it is ejected the pressure medium out of the second medium chamber of pressure 34 and circulates, through check valve 147 dependent on the pressure medium located in the position of circulation and through the return branch 49, likewise to the return line of pressure medium 43. Once it is reaches the starting position S, the two-way valve 47 jumps to cause of the decreasing pressure in the second chamber of medium of pressure 34 - the threshold pressure has been set for example to 40 bars - to the position shown in figure 6, so that Activate check valve 147.

As soon as signal transmitter 51 sends a authorization signal to control mechanism 60, valve 46 is goes to the reverse circulation position shown in figure 6. A cause of the movement caused by the tension spring 21, the pressure medium will circulate back to the medium tank pressure 41 through return branch 49 and duct return of pressure medium 43.

At the same time the pressure medium cylinder 30 draws pressure medium through the return branch 49, because of the movement caused by the traction spring 21, out of the pressure medium reservoir, until it is reached the retained position R1, R2, R3 or R4. The circulation of means of pressure and the movement of the piston 31 act in a damping manner on the oscillating movement of the retaining element 28, authorized by traction spring 21, such that guarantees a more or less smooth impact on the container wall 8, 8a, 8b and 8c. As soon as the retaining element 28 makes contact with the container wall and through the container is exercised pressure on the retaining element 28, the pressure means try to flow out of the second pressure medium chamber 34, which however is not possible because of the valve retention 147. Only reduced compression can occur in the inside the pressure medium system, such that it is possible a vibration process in the tilting position, although the held position cannot be abandoned to a point such that excessive tipping of the container can occur. During the backward rotation of the container from the position of tilting follows the retained element 28 until it has reached its other resting position A.

A form of execution with two retaining elements 28 arranged one next to the other. The pressure medium cylinder 30 fits into an arm of lever 25, which is articulated by a free end in the spring of traction 21 and at the other end on the axis of rotation 24 which, at its instead, it is fixed to the oscillating arm 23, which supports the power strip stop 22. The stop strip 22 is provided with an elastic support 26, which is configured cylindrically. You can also submit additionally an elastic roller 27, as can be seen in the left retention element.

List of reference symbols

one Container of trash 1st Container of trash 1 B Container of trash 1 C Container of trash 2 Top folding 3 Top scrollable 4 Edge of container 5 Opening of spill 6 Cloth smock 7 Container manifold 8 Wall of container 8a Wall of container 8b Wall of container 8c Wall of container 9 Stop, top, maximum as a noun, top as an adverb 10 Mechanism emptying eleven Car elevator 12 Comb pick up 13 Four guide joints 14 Connecting rod higher fifteen Connecting rod lower fifteen Point of joint 16 Buttress 17 Strip lock 18 Axis of turn 19 Propulsion mechanism swivel twenty Retention Device containers twenty-one Spring traction 22 Strip of stop, top, maximum as a noun, top as an adverb 2. 3 Arm rocking 24 Axis of turn 25 Arm of lever 26 Support for elastic 27 Roller elastic

28 Element of held 30,30a Middle cylinder Pressure 31.31a Plunger 32.32a Stem plunger 33.33a First half chamber of Pressure 34.34a Second half chamber of Pressure 40 Bomb 41 Deposit of pressure medium 42 Feed duct of pressure medium 43 Return duct of pressure medium 44.44a Branch of Advance 45.45a Medium duct Pressure 46.46a Valve 47.47a Valve two way 48.48a Medium duct Pressure 49.49a Branch of return 50.50a Transmitter signals 51.51a Transmitter signals 60 Mechanism of control TO Position of repose S Position of start R1, R2, R3, R4 Position of held 130 Mechanism of drive 140 Mechanism tensor 147 Valve retention 147th Valve retention

Claims (10)

1. Device for retaining containers to be emptied, especially garbage containers (1, 1a-c) with a capacity of between 80 and 1,100 l, during tipping up to the discharge opening (5) of a collecting container (7) with at least one retaining element (28) movably disposed in the pouring opening (5), which in its retained position fits into the container (1, 1a-c) and prevents excessive tilting, and with a mechanism of drive (130) that fits into the retaining element (28), characterized in that the actuating mechanism (130) for moving the retaining element (28) is configured in a starting position S that releases the pouring opening (5) and to hold in this position, because there is at least one signal transmitter (50, 51) that is directly or indirectly connected to the drive mechanism (130) and that delivers a signal during the emptying process, in the case of a preset container position or after a per Default time iodine, to the drive mechanism (130) to release the retention element (28) and because a tensioning mechanism (140) fits in the retention element (28), which moves the retention element (28) after the release by means of the drive mechanism (130) to its respective retained position. 2. Device according to claim 1, characterized in that there is at least one other signal transmitter (50, 51), which is connected to the drive mechanism (130) and which delivers a signal during the emptying process, in the case of another preset container position or another period of time, to rotate the retained element (28) out to the start position (S). Device according to claim 1 or 2, characterized in that the signal transmitter (50, 51) is a position monitoring sensor arranged in the emptying mechanism (10), trapdoor switch, receipt signal switch or a transmitter of angles of rotation. Device according to one of claims 1 to 3, characterized in that the drive mechanism (130) is a pressure medium cylinder (30, 30a) that is connected to two pressure medium ducts (45, 45a, 48, 48a), a check valve (147, 147a) being arranged in a pressure medium conduit (48, 48a). Device according to claim 4, characterized in that the check valve (147, 147a) is part of a two-way valve (47, 47a) controlled by pressure. Device according to one of claims 1 to 5, characterized in that the tensioning mechanism (140) is a tension spring (21). Device according to one of the claims 1 to 6, characterized in that two retaining elements (28) are arranged horizontally next to each other, which in each case have their own drive mechanisms (130) and tensioning mechanisms (140). Device according to claim 7, characterized in that the retaining elements (28) can be operated independently of each other or together. Device according to one of claims 1 to 8, characterized in that the retaining element (28) has an elastic support (26). Device according to one of claims 1 to 9, characterized in that the retaining element (28) has an oscillating arm (23), which is mounted on one end in a rotating manner and on the other end has a stop strip (22 ) padded that extends at right angles.