Trolley for a recycling collection system

Abstract

A trolley (1, 1') for a recyclables collection system (2), wherein the trolley (1, 1') has one or more rollers (19) on the bottom side, which are arranged on an underside (5) of the trolley (1, 1'), and wherein an upper side (6) of the trolley (1, 1'), which is opposite the underside (5), has a receiving area (7) for a collection container (3, 3') of the recyclables collection system (2), and wherein the trolley (1, 1') comprises a connecting mechanism (9) with at least one connector (10), which connecting mechanism (9) is designed to connect the trolley (1, 1') by means of the connector (10), in particular detachably, to at least one other associated trolley (1, 1').

Description

The invention relates to a carriage for a valuable material collection system, wherein the carriage has on the base side one or more rollers which are arranged on an underside of the carriage, and wherein an upper side of the carriage, which is opposite the underside, has a receiving region for a collecting container of the valuable material collection system. The invention further relates to a valuable material collection system having such a carriage and a collecting container, a collecting container for such a carriage and a use of such a carriage.Trucks of the type mentioned at the beginning are used in different areas to receive collecting containers for valuable materials and to move them between different locations if required. The valuable materials can be waste, for example from industry, commerce or the private sector. However, valuable materials can also be raw materials or intermediates or end products in commerce and industry. Generally, such collecting containers can be used to store and transport different substances. Frequently, such a collecting container is a waste barrel or valuable material barrel.Cars of the type mentioned at the beginning have a plurality of rollers on the bottom side in order to move the car and optionally the collecting container in the interior region and partially in the exterior region in a rolling manner. Such cars usually have a receiving region for collecting containers, wherein the receiving region is remote from the rollers and points upward or away from a floor during normal operation. The receiving region is provided for placing a collecting container on the carriage. The collecting container can stand on the carriage during filling and transport. For emptying, the collecting container can be temporarily separated from the carriage.The receiving region is often specifically adapted to a geometry of an associated collecting container. For example, the receiving region of the carriage can have a base area and a plurality of side walls which are transverse to the base area. The side walls can prevent the collecting container from laterally slipping during transport on the carriage. In particular, it is possible to prevent the collecting container from slipping off the carriage, for example when rolling on an uneven ground. For this purpose, the receiving region can be dimensioned such that a collecting container with a specific mounting volume or a collecting container with a specific design can be received therein with as close a fit as possible. For example, the receiving region can be designed such that a collecting container having a certain outer shape can be positioned in the receiving region while leaving a certain clearance with respect to the side walls.Comprehensive fuel management often presupposes that two or more collecting containers are provided at the same location. This may be required, for example, to sort different wastes separately. For other reasons, several collecting containers may also be necessary at the same location, for example in order to simultaneously hold different raw materials in stock. Especially in larger plants, there are collecting points at which a plurality of collecting containers are provided centrally. It will often be the case that the cars with the collecting containers must be moved between two locations as required or at regular intervals by a person. For example, the cars can be rolled from the collection location to a emptying location in order to empty the collection containers and subsequently returned again. In the simplest case, a separate vehicle can be provided for each collecting container. This can lead to the cars having to be moved individually, for example one after the other, by a person. Depending on the number of cars, this can be time-consuming.Vehicles are known which have a receiving region for two collecting containers. As a result, the collecting containers can be transported more efficiently. However, such a system only enables a specific configuration, wherein the carriage and the collecting containers are matched to one another, in particular with respect to shape and / or size. Consequently, such cars cannot be used flexibly because the cars are not easily suitable for transporting different collecting containers. Furthermore, such cars can have a defined or invariable receiving capacity at collecting containers. Therefore, on the one hand, the maximum possible transport quantity of collecting containers per vehicle is limited. On the other hand, there may be situations in which the accommodation area is not fully used, so that an unnecessarily large car must be moved.It is an object of the present invention to provide a carriage for a valuable material collection system, a valuable material collection system and a collection container, with which at least some of the aforementioned disadvantages can be reduced or avoided.This object is achieved by a carriage according to claim 1, by a valuable material collection system according to claim 13, by a collection container according to claim 14 and by a use of a carriage according to claim 15.A carriage according to the invention for a valuable material collection system has on the base side one or more rollers which are arranged on an underside of the carriage. When the car is used as intended, the rollers contact a floor or subsoil. Accordingly, the underside, when used as intended, points to the ground or subsoil on which the carriage stands or rolls. An upper side of the carriage, which is opposite the lower side or is facing away therefrom, has a receiving region for at least one collecting container of the valuable material collecting system. When the car is used as intended, the top side faces away from the ground. The receiving region is designed to receive at least one collecting container in a detachable manner, in particular during filling of the collecting container and / or during transport of the collecting container on the carriage.The carriage is preferably designed to provide a valuable material collection system in combination with at least one collection container. However, the car and the collection container can be produced and sold separately from each other. The collecting container can generally be designed to receive a substance or a substance, in particular objects, therein and / or transport it therein. These can be, for example, valuable materials, e.g. waste, or raw materials, intermediates or end products in commerce, industry or in the private sector.According to the invention, the carriage comprises a connecting mechanism with at least one connector. Particularly preferably, the carriage comprises a connecting mechanism with two separately formed connectors. The connection mechanism is designed to connect the carriage to at least one other assigned carriage by means of the at least one connector, i.e. using the connector. The connecting mechanism is designed in particular to connect the carriage by means of the connector in a releasable and / or temporary manner to at least one other assigned carriage. The respective connector is preferably a component of the car.Advantageously, the carriage can be connected quickly and easily to one or more other carriages by the at least one connector. This makes it possible to form a group of cars which can be moved or rolled together. The connection mechanism with the connector enables a car group to be individually assembled, in particular depending on the situation. For example, a car can be temporarily connected to other cars to form a group (car group) using the connector. The car can then be released from the car group again or the car group can be released. The connector can also be used to connect cars of different design to one another. As a result, an individual car group can be assembled for transporting collecting containers of different shape and / or size. Advantageously, the respective carriage can be used particularly flexibly on account of the connecting mechanism. A further advantage is that the connector is preferably part of the car. In other words, it is preferred that the at least one connector belongs to the car itself. This means that the respective connector, in particular the entire connecting mechanism, can be carried along (continuously) by the carriage during operation. This applies in particular in a situation when the connector is currently not used as intended for coupling cars. Thus, the connector is always ready for grip. Advantageously, two adjacent cars can be connected to one another exclusively by means of the connection mechanism with at least one connector. Consequently, additional, e.g. external, connecting means which are not part of the actual vehicle can be dispensed with. Accordingly, attachments on the carriage can be dispensed with.The invention further relates to a valuable material collection system which has at least one carriage according to the invention and at least one collecting container. Preferably, the valuable material collection system can have two or more cars according to the invention and / or two or more collecting containers. The respective car and the respective collecting container can be manufactured and / or sold as a set. It is also possible for the respective carriage and the respective collecting container to be produced separately from one another and to be combined into a set only subsequently.The invention further relates to a collecting container for a car according to the invention for providing a valuable material collecting system, in particular a valuable material collecting system according to the invention. The features of the collecting container disclosed in the description generally apply to a collecting container in the context of the invention, in particular also to collecting containers as part of a valuable material collecting system. The collecting container can generally be an object which has in its interior a cavity which is designed to separate a content in the collecting container from its environment (compartmentalization). In principle, the collecting container can be provided for receiving and / or transporting solid and / or liquid and / or gaseous substances. For example, the collecting container can be used for the purposes described at the beginning. The collecting container can optionally have a lid in order to temporarily close the cavity. The lid may be attached to the collection container or may be completely detachable therefrom. In the specification, it is assumed, without limitation, that the collection container is a waste barrel or a waste barrel. The collecting container is referred to briefly as a container.Preferably, the container forms in its interior a cavity which, starting from a base of the container, widens in the direction of an opposite opening of the container, for example a removal or filling opening. Preferably, a cross section of the container can widen uniformly or at a constant rate from the bottom in the direction of the container opening. Consequently, a (cavity) inner diameter of the container may change, in particular in a longitudinal direction of the container. Accordingly, one end of the container with the (removal or filling) opening can have a larger base area than an opposite end of the container with the container base. Advantageously, as a result, a plurality of containers can be stacked one inside the other in a particularly space-saving manner.The container can preferably be a rectangular, in particular a square, waste or valuable material barrel made of plastic. Accordingly, a container bottom and / or a (removal or filling) opening can have a rectangular or square shape. The outer corners and / or the inner corners of the container may be rounded. The container can have carrying handles at the end, e.g. at the upper edge or in the region of the removal or filling opening, for easier transport. The container can optionally have a removable lid for closing the (removal or filling) opening. The container may be food-safe. A capacity of the container may be, for example, 60 liters or 90 liters. The invention is not limited to such a container.The invention further relates to a use of a carriage according to the invention for providing a valuable material collection system, in particular a valuable material collection system according to the invention. The use comprises in particular the use of a carriage for the purpose of receiving at least one container in the receiving region and / or for transporting at least one container by means of the carriage.Further, particularly advantageous embodiments and developments of the invention are evident from the dependent claims and the following description, wherein the claims of one claim category can also be developed analogously to the claims and description parts to another claim category and in particular individual features of different exemplary embodiments or variants can also be combined to new exemplary embodiments or variants.The features of the carriage disclosed in the description generally apply to a respective carriage in the context of the invention, in particular to a carriage alone, but also to a carriage as part of a valuable material collection system. In the description, it is assumed, without being limited thereto, that the connection mechanism of the respective carriage is designed for a detachable or reversible connection to at least one other carriage. Accordingly, a plurality of cars can be detachably coupled to each other via the connecting mechanism.The respective carriage is preferably of modular design, such that two or more carriages and / or carriages of different dimensions or of different design (according to the invention) can be connected to one another. In particular, vehicles with a different sized accommodation area and / or with different payloads can be connected to one another. Consequently, a carriage according to the invention, in particular the receiving region for the container, is not limited to a specific shape and / or size. By way of example only, one car according to the invention may have a payload of up to 80 kilograms, while another car according to the invention has a payload of up to 100 kilograms. Furthermore, a receiving region of a carriage can receive a square container (with a square container floor), wherein a receiving region of another carriage can receive a rectangular but not square container with a corresponding container floor. In principle, a receiving region can also be designed to receive a container having a (multi)gonal or round container base or a container whose base comprises at least one arc-like or curved section.The connecting mechanism of the respective carriage is preferably designed to connect at least two carriages to one another to form a chain or group of carriages (carriage group). Preferably, a plurality of cars can be connected to one another side by side, in particular in a releasable manner, by means of the connection mechanism. Preferably, at least two cars, preferably three cars, in particular four cars, can be linked to one another by the connecting mechanism. Advantageously, up to four cars according to the invention, in particular also different cars, can be arranged in series by the connection mechanism. As a result, a plurality of collecting containers, in particular also having different shapes and sizes, can be transported particularly efficiently.The receiving region of the respective carriage is preferably designed to receive a single collecting container. The receiving region enables the collecting container to be arranged releasably in the receiving region. Preferably, the receiving region provides lateral stabilization for the container. The receiving region is preferably designed such that a container is secured in the receiving region against lateral slipping. For example, the receiving region can have a supporting surface which receives the container base. Furthermore, the receiving region can have lateral stabilizing elements for the container on at least one side, preferably on a plurality of sides. For example, the receiving region can have a plurality of retaining elements, for example side walls which are transverse to the bearing surface. Preferably, a container in the receiving region can be laterally surrounded by holding elements and / or stabilizing elements at least along a part of its circumference. It is also possible for a receiving region to offer space for two or more collecting containers. Then, each container may be laterally stabilized as described above.The respective carriage can have at least one opening on or in at least one side, in which opening a connector can engage, in particular in a releasable manner, for connecting another carriage. This opening is also referred to as a coupling opening. Accordingly, the at least one connector can be arranged for the purpose of coupling cars between the cars involved. This opening (coupling opening) is preferably part of the connection mechanism of the car. The opening may form a retaining opening or engaging opening for the connector. Consequently, the connection mechanism of a respective carriage can in the simplest case be formed by a connector and an associated opening (coupling opening) of the carriage. However, it is preferred that the connection mechanism of each car comprises or is formed by two connectors and a plurality of associated openings (coupling openings) on mutually opposite sides of the car. In particular, the advantageous refinements or subunits of the connector and of the respective opening (coupling opening), which are described below, can additionally be part of the connection mechanism.The opening (coupling opening) is preferably formed in a base platform of the vehicle. The opening is preferably formed on or in a side which runs along the receiving region and / or on or in the upper side of the carriage.The receiving region preferably comprises a support surface for the container, wherein the container contacts the carriage via the support surface, in particular directly. The support surface can in particular receive or support the container base or parts thereof. The support surface can preferably have a planar or planar surface. Particularly preferably, at least one opening (coupling opening) can be formed on or in a side which runs along the bearing surface of the receiving region.The respective car can have at least one opening (coupling opening) each on or in at least two sides which are opposite one another with respect to the receiving region for connecting another car. The openings can be in particular on or in two different sides along the bearing surface of the receiving region, wherein the sides are opposite each other with respect to the bearing surface. The different sides of the carriage with the coupling openings preferably do not directly adjoin one another. Preferably, a different connector can engage, in particular releasably, in each opening. As a result, a different car can be connected in each case.For coupling a plurality of cars, at least one connector can be brought into engagement with an opening on or in a first side of a first car which is the starting point of a car group to be formed. The same connector can be brought into engagement with an opening of another, second carriage. Additionally, at least one other connector may be engaged with an opening on or in a second side of the first car opposite the first side. The same connector can be engaged with an opening on a third car. This results in a coherent chain of three cars.Preferably, the respective carriage has at least two openings (coupling openings) in each case on or in at least two sides which are opposite one another with respect to the receiving region and / or the bearing surface, wherein a (different) connector can engage in each of the two openings of one side in each case for connecting another carriage. The different sides of the carriage with the coupling openings preferably do not directly adjoin one another. It is possible for the respective side to have three openings, particularly preferably four openings, in each of which a connector can engage. A combination is also possible, wherein the opposite sides have a different number of openings. It is generally preferred that all openings (coupling openings) of the carriage for connectors are of identical construction. In principle, more than four openings are also possible on the respective side. The plurality of openings of one side are preferably arranged in a row.Particularly preferably, two adjacent, also different, cars are connectable to each other by means of two connectors, each of which is in engagement with an opening on the same side of the respective car. Accordingly, for the purpose of coupling two adjacent cars in each case, preferably (only) two connectors can be arranged between the cars involved. Advantageously, a particularly stable coupling of two cars can thereby be achieved. As a result, the group of cars can be steered particularly precisely.The carriage is preferably designed such that the respective opening (coupling opening) for connecting another carriage is formed lying on the inside in the receiving region of the carriage. In particular, the respective opening can be offset inward with respect to an outer contour of the car. Accordingly, the opening is then not formed directly on the outer edge of the receiving region. In other words, the receiving region can protrude (laterally) beyond the respective opening.It is preferred that the respective opening (coupling opening) is formed on the edge side on or in the support surface. The respective opening can directly border an (outer) edge of the support surface. Preferably, two, three or four separate openings can be provided in an (outer) edge region of the support surface. The plurality of openings may be arranged in a row along the edge of the support surface. Preferably, two mutually opposite edge regions of the bearing surface can have a plurality of such openings. The support surface, in particular the relevant material body, is preferably smaller than the entire receiving region. The support surface is thus only a part of the receiving region. The support surface can have (material) supporting surfaces and / or can be formed only partially. As a result, the edge-side openings of the support surface can be offset on the inside with respect to an outer contour of the entire carriage. Advantageously, in the case of a carriage having such openings for the connectors, it can be achieved that a respective connector which is in engagement with such an opening is at least partially covered by a collecting container which is arranged in the receiving region. Due to the fact that a collecting container loads the connector (partially), e.g. directly contacts it, the respective connector can additionally be secured in the relevant opening. Advantageously, the respective connector can thereby be additionally protected against unintentional loosening, e.g. when the carriage is in motion.In a preferred embodiment, the respective carriage has, on two sides which are opposite one another with respect to the bearing surface and / or the receiving region, two or more separately formed openings (coupling openings) for in each case one connector. It is preferred that only two sides of the car have corresponding openings. Preferably, the openings of the opposite sides are arranged in an axially symmetrical manner. Consequently, the other sides of the car do not have such openings (coupling openings) or are formed without openings. Preferably, sides with openings (coupling openings) and sides without openings (coupling openings) can alternate. However, the sides of the carriage without openings for connectors can each have lateral holding elements and / or stabilizing elements for the container. Preferably, the two sides of the carriage with openings (coupling openings) can also have lateral holding elements and / or stabilizing elements, at least in sections, leaving the openings open.If the carriage is designed for a rectangular container or for a container with a rectangular container base, the carriage can have four (outwardly pointing) sides. Preferably, two of these sides, which are opposite each other with respect to the support surface and / or the receiving region, may have a plurality of openings (coupling openings) for each connector for connecting another car. The two other sides of the car preferably do not have such openings. If the receiving region is designed for a square container, two openings can preferably be provided on each of the two sides. If the receiving region is formed for a rectangular but not square container, four openings can be provided on each of the two sides. If the receiving region is formed for a rectangular or square container, the openings (coupling openings) are preferably formed on two sides of the carriage arranged parallel to one another.Advantageously, a modular carriage can be provided which can be coupled flexibly and stably to other carriages by means of the connectors. The described arrangement of the openings (coupling openings) on mutually opposite sides enables each carriage to be connected in principle to a respective other carriage on two sides. Accordingly, each car may be a starting point of a chain or may be connected to the end of an existing chain of cars. Furthermore, the openings (coupling openings) are advantageously positioned on the two sides in such a way that a respective carriage can be connected both to a carriage of identical construction and to a carriage of different construction. In particular, the receiving regions of the respective cars can be constructed and / or dimensioned differently. Advantageously, a carriage with an identical carriage, e.g. on a first side, and at the same time can be connected to a carriage of different design, e.g. on the opposite second side.Particularly preferably, the respective connector and / or the connection mechanism is configured such that the connector, in the locked state, lies in a (same) plane with the support surface of at least one carriage, in particular both carriages, during the coupling or for the purpose of coupling two carriages.It is generally preferred that the respective connector has an elongate shape or is elongate and has an engagement element at each end for engagement in an associated opening (coupling opening) of the carriage. Accordingly, the connector may have an engagement element at each of two opposite ends. The respective engagement element is preferably transverse, in particular substantially orthogonal, to a longitudinal extent of the connector. Preferably, the connector may have an elongate longitudinal member, at each end of which an engagement member is formed. Accordingly, the respective engagement element can be transverse, in particular substantially orthogonal, to the longitudinal part of the connector. The engagement elements can form the termination of the connector with respect to the longitudinal extent.The respective connector can have a latching element at each of at least one end, in particular at two opposite ends. The latching element can preferably comprise or be a latching nose. The latching element can preferably be formed on the respective engagement element, in particular on the end side. The respective latching element is preferably designed to be latched with an associated latching element of the carriage. The respective latching element of the carriage is preferably formed by a base platform of the carriage.The respective latching element of the carriage, in particular of the base platform of the carriage, is preferably provided by means of a latching opening. The latching element can be part of the respective latching opening. Alternatively or additionally, the latching element can be assigned to the respective latching opening, in particular such that, when the connector engages in the latching opening, the latching element of the connector interacts with the latching element of the latching opening for latching purposes. Particularly preferably, the previously described openings (coupling opening) of the car, into which a connector can engage for the purpose of coupling, preferably each have such a latching opening and / or each form such a latching opening. In general, all openings of the carriage which are provided for engaging a connector can have and / or form a latching opening described above. Advantageously, the latching element on the connector and a latching opening interacting (temporarily) therewith form a latching mechanism (as part of the connecting mechanism).The respective connector is preferably designed such that the connector engages around a retaining web of the carriage on at least three sides when engaging in an opening or latching opening. A fourth side of the retaining web can be at least partially surrounded by the connector. The retaining web is preferably formed by a base platform of the carriage. The retaining web can be a narrow material web. Preferably, the retaining web is assigned to an opening or latching opening. In particular, the retaining web can form a (latching) opening, for example together with other parts of the vehicle, and / or can delimit a (latching) opening. Particularly preferably, the respective retaining web or material web returns (inwards) relative to the support surface and / or is formed in a recessed manner in the support surface. Preferably, all openings of the carriage which are provided for engaging a connector can have such a retaining web or material web.According to a preferred embodiment, at least one recess can be formed in a longitudinal part of the respective connector, in particular by an engagement element and a protrusion in or on the longitudinal part of the connector. The engagement element can preferably be attached at the end side to the longitudinal part. The (material) protrusion may be transverse to the longitudinal extension of the connector and / or may be substantially parallel to the engagement element. Consequently, the recess can be formed between the engagement element and the (material) projection spaced therefrom. The recess is preferably formed such that a retaining web or material web of the carriage can engage in the recess or can be at least partially accommodated therein upon engagement of the engagement element in a (latching) opening. Accordingly, the connector can be placed or plugged onto the retaining web or material web by means of the cutout. Preferably, the respective connector has such a recess at both ends, in particular at the mutually opposite ends of the longitudinal part.The cutout at the respective end of the connector can be formed in multiple parts and / or discontinuously. Preferably, the longitudinal part of the connector can (only) have a (material) protrusion each at two opposite outer edges which delimit the longitudinal part in a width direction transverse to the longitudinal extension. Accordingly, a central region of the longitudinal part can be without a (material) projection. For example, the longitudinal part can have on both sides on the outer edge (in relation to a width direction) a material rib, in particular for stiffening and stabilization, which is transverse to the remaining longitudinal part and runs along its longitudinal extent or in a longitudinal direction of the longitudinal part, wherein this material rib ends short of the relevant engagement element, i.e. at a distance therefrom, leaving a recess in each case. The respective material rib can extend in the same direction as the engagement element starting from the longitudinal part. Preferably, the material rib (in cross section) can form a U-profile of the longitudinal part.Advantageously, the connector can encompass a first side of the retaining web by means of the longitudinal part, a second side of the retaining web by means of the engagement element, and a third side of the retaining web by means of the latching element on the engagement element. A fourth side of the retaining web can be partially surrounded by the (material) projection on the longitudinal part of the connector. Advantageously, the connector can have a type of groove in order to additionally fix the connector with respect to the respective (latching) opening. In particular, a movement of the connector along its longitudinal extension can thereby be reduced or prevented to the greatest possible extent, provided that the retaining web engages snugly in the recess in the connector. This advantageously makes it possible to open the latching mechanism at one end of the connector, wherein the other end of the connector is reliably held in the (latching) opening and unintentional detachment of this connector side is avoided. Advantageously, the respective connector can thereby be released from the latching "side by side".Preferably, the respective connector and / or the connecting mechanism is configured such that two adjacent cars are spaced apart from one another in the connected state due to the connector. This means that two mutually connected adjacent cars do not touch directly. Preferably, a distance between two adjacent cars is (large) due to the respective connector such that a collecting container which is accommodated in the accommodation region of a first car and a collecting container which is accommodated in the accommodation region of another, second car contact one another (only) at an upper edge, i.e. pointing away from the car. Alternatively, it is also possible that the relevant collecting containers do not touch directly at the upper edge, wherein a distance between the edges of the two containers is (significantly) smaller than a distance between the associated cars.The containers are preferably designed such that a cross section of the respective container tapers from a removal or filling opening in the direction of the container base. Accordingly, the containers can touch one another directly at the upper edge (in the region of the removal or filling opening) and can be spaced apart from one another in the region of the container base. Advantageously, a plurality of cars arranged in series can be positioned relative to one another (at a distance) by means of the connectors in the coupled state such that the containers in the relevant receiving regions touch one another exclusively at an upper edge. Advantageously, gaps can thereby be avoided or kept as small as possible in the region of the filling opening of the containers lying next to one another. Nevertheless, the containers can easily be stacked one inside the other because of their tapering outer and / or inner diameter. Furthermore, a tapering outer and / or inner diameter advantageously enables bags or bags, for example garbage bags, to be removed more easily from a container. A further advantage that can result from the described shape of the containers is that facilitated emptying of bulk material, for example also food, from the container is achieved.Preferably, the respective connector and / or the connection mechanism is configured such that the connector, at least the respective engagement element, penetrates the carriage from the top side to the opposite bottom side in the locked state. This applies if the respective connector couples two cars and / or if the respective connector rests in a storage area of the car for connectors. Preferably, the connector can generally be latched to the base platform of the carriage, which base platform forms the receiving region and the supporting surface.The trolley preferably has a storage area for storing one or more connectors. The storage region is preferably formed by the base platform of the carriage. The storage region is preferably formed in the receiving region of the carriage for the collecting container. Particularly preferably, the storage region is formed within the support surface of the carriage for the container.The bearing region is preferably designed to arrange the respective connector in a recessed manner in the bearing surface of the receiving region in the bearing region. Alternatively, the bearing region can be configured to arrange the respective connector flush with the bearing surface of the receiving region in the bearing region. A combination thereof is also possible, in particular if the storage area comprises a plurality of storage spaces. The arrangement of the respective connector in the storage region preferably includes the connector being latched to the carriage.The storage area of the car can comprise at least two or more storage spaces of separate design for one connector each. The individual storage spaces can be spaced apart from one another. It is preferred that the respective storage area (exactly) has two storage spaces for receiving one connector each. As already described, it is advantageous if two adjacent cars are coupled by means of two connectors. Consequently, it is convenient for each trolley to carry its own two connectors.Advantageously, the connectors can be stored in the storage area in a particularly space-saving and secure manner, provided that the connectors are not currently required for coupling. The receiving region of the carriage can thus have a dual function. On the one hand, a container can be accommodated therein. On the other hand, a plurality of connectors may be accommodated therein. If the connectors are arranged flush with the support surface in the bearing region and form a planar surface, for example, the connectors themselves can form part of the support surface for the container in the receiving region. It is generally preferred that at least two of the previously described openings, in particular latching openings, are assigned to the bearing region. Preferably, each storage location of the storage area can be assigned two previously described openings, in particular latching openings. Advantageously, the respective connector can be locked securely to the base platform above it in the storage region.The two or more connectors of a carriage are preferably of identical construction or identical design. Furthermore, the connectors of cars can also be designed identically with different receiving regions. This allows the connectors to be exchanged between different cars.The carriage can be formed at least partially from plastic, in particular from recycled plastic. Preferably, the car may consist of at least 80% recycled polypropylene. It would be possible, for example, for the base platform of the car, apart from the rollers, to be formed completely from recycled plastic, in particular recycled polypropylene. The respective connectors of the car can also be formed completely from recycled plastic, in particular recycled polypropylene. The aforementioned components can contain up to 70% post-consumer recyclate.The base platform of the carriage preferably forms the receiving region with the support surface for the container. The receiving region is formed on or in the upper side of the base platform or of the carriage. On the upper side, lateral holding elements and / or stabilizing elements for the container can be formed along one or more sides of the carriage, in particular transversely to the support surface. These holding elements and / or stabilizing elements delimit the receiving region laterally or outwards.The base platform has an underside on which preferably four rollers or steering rollers are arranged. At least one of these rollers, in particular two rollers, can have a brake. The rollers contact a ground when the car is used as intended. For example, the rollers are designed such that the car can be rolled in the interior and in the protected exterior. This enables the carriage to be used, for example, on flat surfaces in warehouses, production areas, cantins and similar locations. The base platform in combination with two connectors may form a carriage according to the invention.The base platform preferably has at least one, preferably two or more (material) support surfaces. The respective (material) recess can penetrate the base platform from the top side to the bottom side (opening). In particular, the receiving region can have one or more such (material) receiving regions (openings). If a plurality of (material) material ribs are provided, these are preferably formed separately from one another, for example by material ribs.Alternatively or additionally, the base platform can have at least one (material) recess in a lateral holding element and / or stabilizing element, preferably without forming an opening. This means that the material in this region is only diluted with respect to surrounding regions. Preferably, at least one lateral holding element and / or stabilizing element can have such a (material) recess (as a material thinning), wherein the (material) recess continues without interruption in the receiving region, in particular in a horizontal section, forming an opening. This means that an opening in a horizontal part of the receiving region can directly adjoin a material dilution in a lateral part of the base platform.Advantageously, an opening in the base platform allows liquid to flow off in particular from the receiving region. Furthermore, the material consumption can be reduced by recesses. A further advantage is that, due to the (material) distortion during production, e.g. during injection molding, is as low as possible. Accordingly, it is preferable that at least the base platform and the connectors are provided by injection molding. Furthermore, inner ribs in the material of the base platform can bring about a lateral stiffening of the carriage.The invention is explained in more detail below with reference to the attached figures on the basis of exemplary embodiments. In this case, identical components are provided with identical reference numerals in the different figures. The figures are generally not to scale. The following are shown: FIG. 1 is a perspective view of a car according to the invention, FIG. 2 shows a perspective illustration of the carriage from FIG. 1, FIG. 3 is a perspective view of cars according to the invention, FIG. 4 is an enlarged view of parts of the cars from FIG. 3 , FIG. 5 is a perspective view of cars according to the invention, FIG. 6 is a perspective view of a valuable material collection system according to the invention, FIGS. 7 and 8 are enlarged views of parts of cars according to the invention.In Figures 1 and 2 there is schematically shown an embodiment of a car according to the invention. FIG. 1 shows an upper side of the carriage, wherein FIG. 2 shows an underside of the same carriage. The carriage 1 comprises a movable base platform 4. the base platform 4 has an upper side 6 and a lower side 5 facing away from it. In this example, two of the rollers 19 have a brake.On the upper side 6 of the carriage 1, a receiving region 7 is formed for the detachable receiving of a collecting container, not shown here. The receiving region 7 is provided in this example for a rectangular but not square collecting container. The receiving region 7 is formed on the one hand by a bearing surface 8 which forms a planar surface. The collecting container can be supported directly on the support surface 8. In the support surface 8, two connectors 10 are arranged flush with the support surface 8 in a position region 17. These connectors 10 are, at least in the state shown, part of the support surface 8, and the receiving region 7 is bounded, on the other hand, along four sides 16, 16', 16", 16"' of the carriage 1 by a plurality of holding elements 25 or stabilizing elements 25 which are transverse to the support surface 8. The sides 16, 16', 16", 16"' of the carriage 1 form the sides 16, 16', 16", 16"' of the receiving region 7.In FIG. 1, it is shown that the carriage 1 has a plurality of openings 15, 15' along two sides 16, 16" which are opposite one another with respect to the receiving region 7 and the supporting surface 8. These openings 15, 15', which are also referred to as coupling openings 15, 15', are formed in the base platform 4. The respective opening 15, 15' extends through the base platform 4 from the upper side 6 to the lower side 5. This is shown in detail elsewhere.It can be seen in FIG. 1 that the two longer sides 16, 16" of the carriage 1, which extend along the bearing surface 8 of the receiving region 7, each have four latching openings 15, 15'. The two other shorter sides 16', 16" of the carriage 1 do not have latching openings 15, 15' for connectors 10, but only retaining elements 25 or stabilizing elements 25, respectively. The retaining elements 25 are additionally also arranged on the two longer sides 16, 16" of the carriage 1, but only in sections here, so that some areas remain free.The latching openings 15, 15' are formed on two opposite sides 16, 16" along the bearing surface 8. The latching openings 15, 15' of the opposite sides 16, 16" are arranged in an axis-symmetrical manner, with respect to a longitudinal extent of the support surface 8. Consequently, the respective latching opening 15, 15' is formed on the inside in the receiving region 7 of the carriage 1. As a result, the respective opening 15, 15' is offset inward with respect to an outer contour of the carriage 1. it can be seen that the support surface 8, in particular its material surface, is smaller than the receiving region 7, wherein the receiving region 7 protrudes laterally beyond the openings 15, 15'.FIG. 2 shows that the two connectors 10 are latched to the base platform 4 and thus to the carriage 1 during storage in the storage region 17. The respective connector 10 has a longitudinal part 22, which is adjoined at each end by an engagement element 11. The engagement element 11 is transverse, for example approximately orthogonal, to a longitudinal extent of the longitudinal part 22, Each of the two opposite ends 12, 12' of the connector 10 comprises an engagement element 11.In Fig. 3 there are shown two cars 1' according to an embodiment of the invention, which are temporarily connected to a pair or to a car group by means of two connectors 10. The two cars 1' in FIG. 3 are identical in construction to one another. The cars 1' in FIG. 3 are basically of similar construction to the car 1 in FIG. 1. differences consist, for example, in the cars 1' in FIG. 3 being provided for receiving square collecting containers (not shown), the receiving region 7 being dimensioned accordingly. Furthermore, in Fig. 3, each trolley 1' has only two openings 15, 15' along two sides 16, 16" which are opposite each other with respect to the receiving area 7 and the supporting surface 8.It can be seen in FIG. 3 that the edge openings 15' are used to connect two cars 1' to one another. For this purpose, a connector 10 engages in each case in an opening 15' or coupling opening 15' or latching opening 15' of the left carriage 1', wherein the same connector 10 engages with an opposite end in an opening 15 or coupling opening 15 of the right carriage 1'. It will be seen that during coupling the connectors 10 lie in the same plane with the support surface 8. The two connectors 10 used for coupling are assigned to the right-hand carriage 1' in this example. Accordingly, the storage area 17, which has two separate storage spaces 18, 18' for one connector 10 each, is empty in the case of the right-hand carriage 1'. The two connectors 10 and the coupling openings 15, 15' are part of a connecting mechanism 9 of the carriage 1', here of the right carriage 1'.The left car 1' has two free connectors 10 which are placed in the storage area 17 of the left car 1'. These connectors 10 could be used to connect e.g. the left-hand carriage 1' in turn to a third carriage. For this purpose, these unused connectors 10 could be latched in the left edge openings 15 or coupling openings 15 of the left carriage 1'.In FIG. 4, parts of the two cars 1' from FIG. 3 are shown in a different perspective, namely with a view to the underside 5. The respective connector 10 comprises a longitudinal part 22 and at each end 12, 12' an engagement element 11. The longitudinal extension LE of the connectors 10 is selected such that the two cars 1' are at a certain distance from one another in the coupled state.For coupling the two cars 1', the respective connector 10 can be inserted with the two engagement elements 11 in front from the top side (not visible) into the external latching openings 15, 15' or coupling openings 15, 15' of two different cars 1'. For this purpose, an engagement element 11 can be inserted into a latching opening 15' of a first carriage 1' and the opposite engagement element 11 can be inserted into a latching opening 15 of another, second carriage 1'. The two latching openings 15, 15' and coupling openings 15, 15' of the different cars 1' which are connected by a connector 10 are situated opposite one another. In the locked state, the respective engagement element 11 penetrates the carriage 1', in particular the base platform 4, completely from an upper side to the lower side 5.The respective connector 10 comprises a latching element 13, for example a latching nose, on each engagement element 11. In the latched state, a latching element 13 of the connector 10 is latched to an associated latching element 14 of the car 1'. For this purpose, each latching opening 15, 15' or each coupling opening 15, 15' can be assigned its own latching element 14. The respective latching element 14 can be formed by the base platform 4, in particular by an underside 5 of the cars 1'. The latching element 14 can be, for example, a narrow material web which can be engaged around by the latching element 13 of the connector 1.It is further shown in FIG. 4 that the carriage 1' on the left here has two connectors 10, which are not currently required for coupling and are accordingly arranged in the storage area. Also during the storage in the storage area, the respective connector 10 can be releasably locked to the base platform 4. For this purpose, an engagement element 11 can engage in an opening 15'' of the bearing region 17 (FIG. 3 ). The respective opening 15'' of the bearing region 17 can also have a latching element 14 (FIG. 4 ) which can interact with a latching element 13 of a connector 10 for releasable fastening, as was described above for the coupling openings 15, 15'.In FIG. 5, four cars 1, 1' according to different embodiments of the invention are shown, which are temporarily connected to form a chain of cars 1, 1' by means of connectors 10. The two left cars 1' in FIG. 5 are identical in construction to one another and correspond to the cars 1' from FIG. 3. The two right cars 1 in FIG. 5 are identical in construction to one another and correspond in each case to the car from FIG. 1. In FIG. 5, it can be clearly seen from the right in the case of the second car 1 that the car 1 can be coupled to other cars 1, 1' of different construction. For this purpose, the respective car 1 has four coupling openings 15, 15' on each of the two opposite sides, which are arranged relative to one another in such a way that, independently of the specific configuration of the other car 1, 1', two coupling openings 15, 15' of the two cars 1, 1' to be coupled to one another are always opposite one another.In Fig. 6, a valuable material collection system 2 according to the invention is shown. The valuable material collection system 2 comprises four cars 1, 1' according to the invention with different designs. Two adjacent cars 1, 1' are connected to one another via two connectors 10, respectively. The coupling takes place in such a way that two cars 1, 1' facing each other are spaced apart from each other due to the connectors 10 located between them. Each carriage 1, 1' has a collecting container 3, 3', which is accommodated in the accommodation region of the carriage 1, 1'. Consequently, the collecting containers 3, 3' are also arranged in a row or chain. Depending on the design of the cars 1, 1', the shape of the collecting containers 3, 3' differs. The two cars 1 on the left here have a relatively narrow design and accordingly carry a rectangular but not square collecting container 3, which likewise has a relatively slender shape. In contrast to this, the two cars 1' on the right here have a relatively wide, square design and accordingly carry a square collecting container 3'.It can be seen in FIG. 6 that the adjacent collecting containers 3, 3' come very close to one another at an upper edge 20 and almost directly touch one another. In contrast, the distance between the associated cars 1, 1' is significantly greater than between the edges 20 of the collecting containers 3, 3', which they carry. It is also possible for the adjacent collecting containers 3, 3' to touch one another directly at the upper edge 20. For this purpose, the longitudinal extension LE (FIG. 4 ) of the connectors 10 involved can be adapted.In Fig. 7 there is shown an enlarged view of a part of a car according to the invention. The upper side of the carriage 1' is shown in the region of the support surface 8. Within the support surface 8, the storage area 17 is provided with a storage location 18 for a connector 10. The storage location 18 is adapted to the elongate shape of the connector 10 and has at each of two opposite ends an opening 15'', into which one of the two engagement elements 11 of the connector 10 can engage in each case. The respective opening 15'' can have a latching element on the lower side of the carriage 1' which is not visible here, which can interact with the latching element 13 on the respective engagement element 11 in order to arrange the connector 10 securely and releasably in the storage region 17. It is further shown that the connector 10 has on its underside, in each case on the outer edge, a material rib 26 which runs in a longitudinal direction LR of the connector 10. Furthermore, in the region of the respective engagement element 11 (only one shown here), a cutout 23 is formed in the connector 10, in particular in the material rib 26. The function thereof will be described with reference to FIG. 8.In Fig. 8 there is shown an enlarged sectional view of a part of a trolley according to the invention, e.g. one of the two trolley 1' of Fig. 3, a connector 10 being shown which engages in a coupling aperture 15 for coupling two trolley 1' (only one shown). The coupling opening 15 is formed within the receiving region 7 of the car 1'. The connector 10 comprises a longitudinal part 22 which extends in the longitudinal direction LR of the connector 10. At the end of the connector 10 with respect to the longitudinal direction LR, an engagement element 11 is formed which is transverse to the longitudinal direction LR. The connector 10 comprises along its longitudinal part 22 two material ribs 26, only one of which is visible here. The material ribs 26 extend transversely, e.g. orthogonally, to the remaining longitudinal part 22, quasi in a depth direction, and extend in the longitudinal direction LR. The material ribs 26 end at a defined distance in front of the engagement element 11, i.e. they do not directly contact the latter. The material rib 26 forms a (material) projection 24 at its respective end facing the engagement element 11. This recess 23 is formed between the projection 24 or the end of the material rib 26 and the engagement element 11. Preferably, this recess 23 is formed identically at both ends of the connector 10.It can be seen that the connector 10 can be placed or plugged by means of the cutout 23 onto a retaining web 21 or material web 21, which is formed in the base platform 4 in the region of the coupling opening 15. As a result, the connector 10 in the locked state can completely engage around the material of the base platform 4, in particular the retaining web 21, on three sides and at least partially engage around it on a fourth side. The retaining web 21 is recessed in the bearing surface 8. This allows an upward facing surface of the connector 10 or a surface facing the collecting container (not shown) to form a planar surface with the support surface 8. The connector 10 and the coupling opening 15 can form with their subunits, e.g. the engagement element 11 and the latching elements 13, 14, the connection mechanism 9 of the car 1'.Finally, it is pointed out once again that the vehicles and valuable material systems described in detail above are merely exemplary embodiments which can be modified in a wide variety of ways by the person skilled in the art without departing from the scope of the invention. Furthermore, the use of the indefinite article "a" or "an" does not exclude that the features in question can also be present multiple times.List of reference characters1, 1' Carriage 2 Valuable material collection system 3, 3' Collecting container 4 Base platform 5 Underside 6 Upper side 7 Receiving region 8 Contact surface 9 Connecting mechanism 10 Connector 11 Engagement element 12, 12' End Connector 13 Latching element Connector 14 Latching element Carriage 15, 15' Opening / latching opening / coupling opening 15'' Opening 16, 16', 16'', 16''' Side 17 Storage region 18, 18' Storage location 19 Roller 20 Edge 21 Retaining web / material web 22 Longitudinal part 23 Recess 24 Projection 25 Retaining element / stabilizing element 26 Material rib LE Longitudinal extent LR Longitudinal direction

Claims

A carriage (1, 1') for a valuable material collection system (2), wherein the carriage (1, 1') has, on the base side, one or more rollers (19) which are arranged on an underside (5) of the carriage (1, 1'), and wherein an upper side (6) of the carriage (1, 1') which lies opposite the underside (5) has a receiving region (7) for a collecting container (3, 3') of the valuable material collection system (2), and wherein the carriage (1, 1') comprises a connection mechanism (9) having at least one connector (10), which connection mechanism (9) is designed to connect the carriage (1, 1') by means of the connector (10) to at least one other associated carriage (1, 1'), in particular in a detachable manner.The trolley according to claim 1, wherein the trolley (1, 1') is modular such that two or more trolley (1, 1') and / or trolley (1, 1') of different dimensions can be connected to one another, and / or wherein the connection mechanism (9) is configured to connect at least two trolley (1, 1') to one another to form a chain of trolley (1, 1').The trolley according to any one of the preceding claims, wherein the trolley (1, 1') has at least one opening (15, 15') on at least one side (16, 16"), into which opening (15, 15') the connector (10) can engage for connecting another trolley (1, 1'), wherein preferably the opening (15, 15') is formed on one side (16, 16") along the receiving region (7) and / or on an upper side (6) of the trolley (1, 1').The trolley according to any one of the preceding claims, wherein the trolley (1, 1') has at least one opening (15, 15') on at least two sides (16, 16") which are opposite each other with respect to the receiving region (7), in each case a connector (10) for connecting another trolley (1, 1') being able to engage in each case said opening (15, 15').The trolley according to claim 4, wherein the trolley (1, 1') has at least two openings (15, 15') on at least two sides (16, 16"), wherein a connector (10) can engage in each of the two openings (15, 15') of one side (16, 16"), wherein preferably two trolley (1, 1') can be connected to one another by means of two connectors (10).The vehicle according to any one of the preceding claims, wherein a respective opening (15, 15') is formed lying on the inside in the receiving region (7) of the vehicle (1, 1'), in particular offset inwards with respect to an outer contour of the vehicle (1, 1').The trolley according to any one of the preceding claims, wherein the connector (10) has an elongate shape and comprises at each end an engagement element (11) for engagement in an associated opening (15, 15') of the trolley (1, 1'), wherein the engagement element (11) is transverse to a longitudinal extension (LE) of the connector (10).The trolley according to any one of the preceding claims, wherein the connector (10) has a latching element (13) at at least one end (12, 12'), in particular at two opposite ends (12, 12'), in particular at the respective engagement element (11), which can be latched to an associated latching element (14) of the trolley (1, 1'), and / or wherein a latching element (14) of the trolley (1, 1') is provided by means of a latching opening (15, 15').The trolley according to any one of the preceding claims, wherein the connector (10), when engaging in an opening (15, 15'), engages around a retaining web (21) of the trolley (1, 1') on at least three sides, and / or wherein a recess (23) is formed in a longitudinal part (22) of the connector (10), in particular by an engagement element (11) and a protrusion (24) in the longitudinal part (22), wherein the recess (23) is formed to receive a retaining web (21) of the trolley (1, 1').The trolley according to any one of the preceding claims, wherein the connector (10) is configured such that two adjacent trolley (1, 1') are spaced apart from each other in the connected state due to the connector (10), wherein preferably a distance between the trolley (1, 1') is such that a collecting container (3, 3') of a first trolley (1, 1') and a collecting container (3, 3') of a second trolley (1, 1') contact each other at an upper edge (20).The trolley according to any one of the preceding claims, wherein the connector (10), in the locked state, penetrates the trolley (1, 1') from an upper side (6) to the opposite lower side (5).The trolley according to any one of the preceding claims, wherein the trolley (1, 1') has a storage region (17) for storing one or more connectors (10), wherein the storage region (17) is formed in the receiving region (7) for the collecting container (3, 3'), and / or wherein a storage region (17) is formed to arrange the connector (10) in a recessed manner or flush manner in the storage region (17), in particular latches with the trolley (1, 1'), and / or wherein a storage region (17) of the trolley (1, 1') comprises two separately formed storage spaces (18, 18') for each connector (10).Valuable material collection system (2) having a carriage (1, 1') according to one of the preceding claims and a collecting container (3, 3').Collecting container (3, 3') for a carriage (1, 1') according to one of Claims 1 to 12 for providing a valuable material collecting system (2).Use of a carriage (1, 1') according to one of Claims 1 to 12 for providing a valuable material collection system (2).

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