Operating device for a hose lifter and hose lifter

Abstract

The invention relates to an operating device for a hose lifter, comprising a venting valve for venting the hose lifter and an operating mechanism for actuating the venting valve. The invention also relates to a hose lifter comprising such an operating device.

Description

[0001] The invention relates to an operating device for a hose lifter and to a hose lifter equipped with such an operating device.

[0002] Vacuum tube lifters are vacuum handling devices used to lift, move, and lower loads using negative pressure. The lifting force is exerted by a lifting tube, which can be shortened by applying negative pressure to its interior and lengthened again by releasing the vacuum. An end effector for gripping an object is typically located at one end of the lifting tube. This can be a mechanical gripping device, but is more commonly a suction gripper.

[0003] To operate the lifting hose and / or the end effector, a control device is typically provided between the lifting hose and the end effector. This device includes a handle for repositioning the lifting hose. A vent valve is usually integrated into the control device, allowing the hose's interior to be vented as needed, thus changing its length. A switch or button on the control device is typically used to open the vent valve.

[0004] German patent DE 10 2008 028 205 C5 discloses such an operating device for hose lifters with a handle featuring a manually operated trigger. The trigger actuates a vent valve, which controls the flow of ambient air into the lifting hose. Specifically, when the trigger is actuated, air from the surrounding environment is supplied to the lifting hose, thereby increasing the pressure inside the hose and allowing it to extend, possibly under the influence of gravity. When the trigger is released, the vent valve closes again, interrupting the flow of ambient air into the lifting hose, which then automatically retracts back to its original position.

[0005] However, this automatic process of moving to the end position is not always desirable. Instead, it can be advantageous if the tube lifter does not move to the end position, but remains at a preset hovering height, for example, to allow the operating device to be grasped from this working height in order to prepare for the next transport operation of a workpiece.

[0006] For this purpose, it is known to provide a separate locking lever on the operating device, which locks the trigger in a defined switching position and thus allows a defined inflow of ambient air.

[0007] For example, DE 10 2020 128 380 A1 discloses an operating device with a handle, wherein a push button for opening a ventilation valve is provided on a first side of the handle. The ventilation valve is actuated into a closed position by means of a force storage device, so that the ventilation valve is moved into the closed position after the push button is released, and thus the push button returns to its initial position. To lock the ventilation valve in an intermediate position between the closed and open positions, a locking mechanism is provided, which can be released by means of a release button located on the opposite side of the handle.

[0008] To make the operation of a hose lifter even more intuitive, it is known from DE 10 2023 102 438 B3 to provide two operating elements, wherein the first operating element opens the vent valve and the second operating element closes the vent valve. The vent valve is designed as a valve flap, to which the operating elements directly act via a respective transmission element in the form of a connecting rod.

[0009] Further operating devices for hose lifters are known from DE 10 2018 105 606 A1 and EP 3 536 650 A1.

[0010] The invention is based on the objective of making the operation of a hose lifter even more intuitive and robust.

[0011] Furthermore, a cost-effective design is desirable.

[0012] This problem is solved according to the invention by an operating device having the features of claim 1. The problem is also solved by dependent claim 19.

[0013] The operating device is designed for operating a hose lifter. The hose lifter comprises, in particular, a lifting hose with an inner tube. The lifting hose can be shortened by applying negative pressure to the inner tube and lengthened again by venting the inner tube (i.e., by allowing air, especially ambient air, to flow into the inner tube). The hose lifter preferably also includes an end effector, particularly in the form of a suction gripping device. The end effector can preferably be supplied with negative pressure through the inner tube.

[0014] The operating device comprises a handle, in particular one that can be gripped with one hand. Specifically, the operating device is a one-handed operating device for a hose lifter. Therefore, the operating device can be designed to be operated with one hand. Advantageously, the operating device can have a housing that includes the handle.

[0015] The operating device includes a lifting hose connection, particularly for the flow connection to the interior of the lifting hose. The lifting hose connection may be part of a lifting hose coupling, which includes a connecting device for the mechanical connection of the operating device to the lifting hose. The lifting hose connection may be a fluid channel. The lifting hose connection may be an opening in the housing of the operating device.

[0016] The operating device also includes a vent valve for venting the lifting hose connection and thus – when the lifting hose is connected – for venting the interior of the lifting hose. The vent valve is specifically designed to selectively establish or close off a flow connection between the lifting hose connection and a vent connection or opening of the operating device. The vent opening is connected to the surroundings of the operating device, particularly the atmosphere. Therefore, the vent valve can be configured to allow ambient air to flow into the lifting hose connection as needed.

[0017] The vent valve has a valve mechanism that is adjustable between a closed and an open position. In the closed position, the flow connection between the lifting hose connection and the surroundings of the operating device, particularly between the lifting hose connection and a vent connection of the operating device, is interrupted. In the open position, this flow connection is released. The valve mechanism is arranged in a flow path between the lifting hose connection and the surroundings or vent connection.

[0018] The operating device also includes an operating mechanism for actuating the ventilation valve, in particular for adjusting the valve mechanism between the closed position and the open position.

[0019] The operating mechanism comprises a first control element and a second control element, which can be operated separately.

[0020] The operating elements are arranged, and in particular mounted, on the operating handle in a manually adjustable manner. Specifically, the first operating element is arranged on the operating handle in a manually adjustable manner along a first direction of actuation, and the second operating element is arranged on the operating handle in a manually adjustable manner along a second direction of actuation. Preferably, the operating elements are guided so as to be linearly displaceable along their respective directions of actuation. The operating elements can advantageously be designed and arranged such that each direction of actuation is oriented essentially orthogonally to a grip axis of the operating handle.

[0021] Preferably, the operating elements are arranged side by side. Preferably, the operating elements are arranged on the same side of the operating handle, in particular such that the first operating element can be actuated with a first finger of one hand, especially the middle finger, and that the second operating element can be actuated with a second finger of the hand, especially the index finger. Preferably, the operating elements are designed to be retractable into the operating handle, at least partially. The operating elements can, in particular, be in the form of pushbuttons.

[0022] The operating mechanism also includes a coupling device by which the operating elements are mechanically coupled to the valve mechanism. Specifically, the operating elements are coupled to the valve mechanism via the coupling mechanism in such a way that the valve mechanism is moved towards the open position by actuating the first operating element, i.e., by moving the first operating element in the first direction of actuation, and is moved towards the closed position by actuating the second operating element, i.e., by moving the second operating element in the second direction of actuation. Thus, the ventilation valve can be partially or fully opened by actuating the first operating element and partially or fully closed by actuating the second operating element.In particular, the operating elements are coupled to the valve mechanism via the coupling mechanism in such a way that in an actuation position of the first operating element the valve mechanism is in the closed position and in an actuation position of the second operating mechanism the valve mechanism is in the open position.

[0023] The coupling device comprises a coupling element which is rotatably mounted about a pivot axis, particularly within the interior of the control handle. In this respect, the coupling element is specifically a rotary element or rotary component. The control elements are movably coupled to one another via the coupling element. Specifically, each adjustment movement of the control elements in the respective direction of actuation (i.e., both an adjustment movement of the first control element in a first direction of actuation and an adjustment movement of the second control element in a second direction of actuation) can be transmitted to, or is transmitted to, the valve mechanism via the coupling element.

[0024] The proposed operating device enables particularly intuitive operation of the hose lifter while also being robust in use and cost-effective to manufacture. The operating mechanism with two control elements provides a structurally simple and intuitive way to precisely control changes in the length of the lifting hose, allowing even rapid handling operations to be carried out reliably. The fact that the adjustment movement of the control elements is transmitted via a rotatably mounted coupling element enables particularly precise force transmission. This design is also easy to implement and exceptionally robust in use. In particular, this design requires comparatively little installation space for the coupling device, allowing the operating handle to be especially slim and ergonomically designed.

[0025] In the present context, "rotatably mounted" does not necessarily mean that the coupling element must be rotatable through 360°. Therefore, it also includes designs where the rotation angle of the coupling element is limited, either by the design of the coupling element itself or by external influences.

[0026] In the present context, the "open position" of the valve mechanism refers in particular to a final position in which the ventilation valve is fully open.

[0027] Preferably, the first and second operating elements are mechanically coupled to each other via the coupling element in such a way that when the first operating element is adjusted in the first direction of actuation, the second operating element is automatically adjusted in the opposite direction to the second direction of actuation, and vice versa. In this respect, the first and second operating elements can be coupled to each other via the coupling element in such a way that they can alternately assume an actuation position and a non-actuation position. This results in particularly simple and intuitive operation. In particular, the valve mechanism is in an open position, especially in the fully open position, when the first operating element is in the actuation position, and in a closed position when the second operating element is in the actuation position.

[0028] In the present context, the "operating position" of a control element refers in particular to an end position of the control element in the direction of operation.

[0029] In the present context, the "non-operating position" of a control element refers in particular to an end position of the control element in a direction opposite to the direction of operation.

[0030] In this context, an "open position" of the valve mechanism refers to a position that does not correspond to the closed position. This can be the (fully open) open position or a (partially open) position between the closed and open positions.

[0031] In a further advantageous embodiment, the first and second control elements can pass through a neutral position between their respective non-actuated and actuated positions. In particular, when the second control element is in its neutral position, the first control element is also in its neutral position. Preferably, in the neutral position of the first and second control elements, the vent valve is partially open, i.e., the valve mechanism is in an open position.

[0032] It can be particularly advantageous for intuitive operation if the first and second control elements are mounted on the control handle in such a way, especially translationally, that the control elements in their respective actuation position are at least partially inserted into the control handle relative to the neutral position and in their non-actuation position protrude at least partially from the control handle relative to the neutral position.

[0033] The coupling element can be designed, in particular, to redirect a linear adjustment movement of the control elements to the valve mechanism. In this respect, the coupling element can form a deflection element.

[0034] The coupling element can be designed with rotational symmetry about the axis of rotation, at least in sections. For example, the coupling element can be designed as a coupling wheel. Preferably, the coupling element is designed as a drum or roller. However, the coupling element can also be designed asymmetrically with respect to the axis of rotation.

[0035] The coupling element can be designed as a sleeve which is rotatably mounted on an axis.

[0036] Alternatively or additionally, the coupling element, in particular the drum or roller, can be rotatably mounted in a guide section, in particular a guide receptacle, of the operating device. Such a design is particularly robust and enables reliable operation, especially in dusty environments.

[0037] The guide section, in particular the guide receptacle, can be provided by a housing section of the operating device housing, especially the housing that forms the operating handle. The guide section, in particular the guide receptacle, can also be formed within a guide element. The guide element can, in particular, be provided separately from the operating device housing. The guide element can be received in the operating device housing, in particular, attached therein. Such a design enables particularly cost-effective and simple manufacturing of the operating device.

[0038] Preferably, the operating elements are coupled to the coupling element via a respective transmission element. The transmission elements are provided separately from the operating elements. The transmission elements are preferably rigidly connected to the associated operating element. For example, the transmission elements can be received in a mounting section, e.g., in the form of a recess, of the associated operating element.

[0039] In one advantageous implementation, the transmission elements can be pin- or bolt-shaped. In this way, the operating elements can be coupled to the coupling element via a respective transmission pin. This requires comparatively little installation space.

[0040] The operating elements are preferably coupled to the coupling element via the transmission elements in such a way that any adjustment movement of the operating elements along the directions of actuation is transmitted into a rotational movement of the coupling element about the axis of rotation. In this respect, the first operating element can be coupled to the coupling element via a first transmission element in such a way that an adjustment movement of the first operating element in the first direction of actuation is transmitted into a rotational movement of the coupling element, and the second operating element can be coupled to the coupling element via a second transmission element in such a way that an adjustment movement of the second operating element in the second direction of actuation is transmitted into a rotational movement of the coupling element, in particular one that is opposite to the rotational movement when the first operating element is actuated.

[0041] In one advantageous embodiment, the transmission elements can each engage the coupling element eccentrically. In particular, the transmission elements can engage the coupling element at the same radial distance from the axis of rotation. Therefore, the rotary bearing of the coupling element can be equidistant from both transmission elements. This ensures uniform actuation of the valve mechanism during both opening and closing.

[0042] It is particularly advantageous if the axis of rotation of the coupling element is located between the points of application of the two transmission elements to the coupling element. In this respect, the transmission elements can be positioned opposite each other with respect to the axis of rotation on the coupling element.

[0043] Preferably, the first and second operating elements are guided so as to be linearly displaceable in their respective directions of operation. This has proven to be particularly ergonomic, especially compared to known operating devices where the operating elements are usually pivotably mounted on the operating device.

[0044] One advantageous implementation involves guiding the first and second control elements linearly in their respective directions of actuation via the transmission elements. In this way, the transmission elements can form a linear guide for the control elements. The transmission elements can thus fulfill a dual function (force transmission + guidance), which facilitates a particularly compact and cost-effective design of the control device.

[0045] The transmission elements, in particular transmission pins, can themselves be guided linearly in a respective guide, in particular a pin guide. The guides for the transmission elements can be formed in the operating handle, e.g., provided by a housing section of the operating handle.

[0046] The guides for the transmission elements can be integrally formed with the operating handle. For example, the guides for the transmission elements can be formed in appropriately designed housing sections of the operating handle.

[0047] Preferably, the guides for the transmission elements are formed within a guide section, particularly one located in the operating handle. The guide section is provided separately from the operating handle, which simplifies assembly. For example, the guide section can be inserted, clipped, clamped, or screwed into the operating handle. It can be particularly advantageous if the coupling element is also rotatably mounted about the axis of rotation within the guide section. In this respect, the aforementioned guide section for the coupling element can also be formed within the guide section. This provides a particularly robust and, at the same time, easy-to-manufacture guide for both the coupling element and the transmission elements.

[0048] Advantageously, the coupling element is mechanically coupled to the valve mechanism via a connecting element. The connecting element is specifically designed to transmit a rotary movement of the coupling element about its axis of rotation into an adjustment movement of the valve mechanism. In this respect, a rotary movement of the coupling element about its axis of rotation can be transmitted into an adjustment movement of the valve mechanism by means of the connecting element.

[0049] The connecting element preferably engages the coupling element eccentrically, in particular at a position between the point of attack of the first transmission element and the point of attack of the second transmission element.

[0050] The connecting element can be designed, in particular, as a transmission bracket. Specifically, the transmission bracket can have a curved profile along its extension from the coupling element to the ventilation valve.

[0051] In a particularly advantageous further development, the operating mechanism and / or the valve mechanism of the ventilation valve can be designed to be self-locking, in particular mechanically braked, such that the valve mechanism remains in a set configuration between the closed and open positions, i.e., it does not automatically return to an initial configuration when the first and second operating elements are released. For example, it is conceivable that the first operating element, the second operating element, and / or the coupling device, e.g., the coupling element, are mounted with a sliding bearing. Alternatively or additionally, the valve mechanism can also be designed or mounted in a correspondingly self-locking manner. Such a design makes it possible to achieve a floating position of the lifting hose in a simple structural way.Because the valve mechanism remains in its set configuration even when the operating device is released, the lifting hose does not automatically retract to its (shortened) end position as usual, but remains in an equilibrium position corresponding to the open position of the valve mechanism. This allows the end effector to be "parked" at an ergonomically convenient working height, for example, to allow the operating device to be accessed from this height to prepare for the next workpiece transport operation. Furthermore, uncontrolled retraction of the lifting hose is prevented.

[0052] The ventilation valve, especially the valve mechanism, can be designed differently.

[0053] In one exemplary embodiment, the ventilation valve can have a valve housing, particularly a disc-shaped one. The valve housing has, in particular, at least one first opening which is fluidically connected to the lifting hose connection, and at least one second opening which is fluidically connected to the atmosphere, in particular to a ventilation port of the operating device. The at least one first opening thus forms, in particular, a vacuum port, and the at least one second opening a ventilation port of the ventilation valve. The valve mechanism can then, in particular, comprise a valve body which is rotatably mounted about a valve body axis of rotation, in particular in the valve housing. The valve body axis of rotation is preferably oriented parallel to the axis of rotation of the coupling element.In particular, the valve body's axis of rotation is inclined, preferably orthogonal, to a main flow direction from the at least one second opening to the at least one first opening. Preferably, the valve body is designed as a drum or roller. In particular, the valve body can be cylindrical. The valve body has at least one radial through-opening, e.g., in the form of a bore.The valve body is arranged in a flow path between the at least one first opening and the at least one second opening such that the valve body assumes a closed position in a first rotational position about the valve body's axis of rotation, in which a flow connection between the at least one first opening and the at least one second opening is blocked by the valve body, and that the valve body assumes an open position in a second rotational position about the valve body's axis of rotation, in which a flow connection between the at least one first opening and the at least one second opening is established through the at least one through-opening.

[0054] This design of a ventilation valve has proven to be particularly robust. In particular, if the valve body's axis of rotation is arranged inclined or perpendicular to the main flow direction from the at least one second opening to the at least one first opening, movement of the valve body solely due to flow forces can be prevented. In this way, a floating state of the tube lifter can be achieved simply and, in particular, without an additional locking mechanism.

[0055] In such a design of the ventilation valve, the valve body, in particular via the transmission bracket, can be coupled to the coupling element in such a way that a rotary movement of the coupling element about the axis of rotation is transferred into a rotary movement of the valve body about the valve body axis of rotation.

[0056] In an alternative exemplary embodiment, the valve mechanism can have a valve flap that is adjustable between an open and a closed position. The first and second operating elements can then be mechanically coupled to the valve flap via the coupling device, in particular via the transmission elements, the coupling element, and the connecting element, such that the opening angle of the valve flap can be adjusted by actuating the first and / or the second operating element. The valve flap can, in particular, be pivotably mounted on the operating device about a pivot axis, preferably arranged centrally with respect to the valve flap.

[0057] In an alternative exemplary embodiment, the valve mechanism can have one or more, in particular two, counter-rotating valve pistons, which are adjustable along a respective switching direction between a closed position and an open position. In the closed position, the at least one valve piston can interact with a valve seat to interrupt a flow connection between the lifting hose connection and an environment, in particular a ventilation connection of the operating device. In the open position, the flow connection can then be released.The first and second control elements can then be mechanically coupled to the valve piston or at least one of the valve pistons via the coupling device, in particular via the transmission elements, the coupling element and the connecting element, in such a way that by actuating one control element the at least one valve piston can be adjusted in the switching direction and by actuating the other control element the at least one valve piston can be adjusted against the switching direction.

[0058] The operating device preferably also includes an end effector coupling for connecting an end effector to the operating device. The end effector coupling is preferably arranged on a side of the operating device opposite the lifting hose connection. When used in a hose lifter, the operating device is therefore particularly located between the lifting hose and the end effector.

[0059] In a further advantageous embodiment, the end effector coupling can include a suction port for flow connection with the end effector, in particular a suction gripper. It can then be advantageous if the lifting hose connection and the suction port are fluid-connected via a fluid guide, particularly in the form of a hose or suction tube. The operating device can thus have a flow connection or fluid line between the suction port and the lifting hose connection. Such a design makes it possible to supply the end effector, particularly when configured as a suction gripper, with negative pressure through the lifting hose and the operating device. For example, the fluid guide can be located in a housing of the operating device, in particular in a housing section extending between the suction port and the lifting hose connection.The housing section can run parallel or substantially parallel to the operating handle.

[0060] The invention also relates to a hose lifter with an operating device described above. The hose lifter comprises, in particular, a lifting hose which has an interior space and can be shortened by applying negative pressure to the interior space and lengthened again by venting the interior space. The hose lifter also comprises, in particular, an end effector, especially in the form of a suction gripping device, for gripping an object. The end effector can be supplied with negative pressure, in particular, through the interior space of the lifting hose. The operating device is preferably arranged between the lifting hose and the end effector, wherein the lifting hose is fluid-connected to the lifting hose connection and the end effector is connected to the end effector coupling.

[0061] In particular, the invention also relates to a hose lifter, comprising: - a lifting hose with an inner hose space, wherein the lifting hose can be shortened by applying negative pressure to the inner hose space and lengthened again by venting the inner hose space, - an end effector, in particular a suction gripping device, - an operating device, in particular arranged between the lifting hose and the end effector, comprising ◯ a handle, especially one that can be gripped with one hand, ◯ a lifting hose connection that is flow-connected to the inner hose space of the lifting hose; ◯ (optional) an end effector coupling via which the end effector is coupled to the operating device, ◯ a vent valve for venting the lifting hose connection (and thus the hose interior), wherein the vent valve has a valve mechanism which is adjustable between a closed position and an open position, ◯ an operating mechanism for actuating the ventilation valve, comprising: ▪ a first control element, which is adjustable along a first direction of operation (manually) and arranged on the control handle ▪ a second control element, which is adjustable in a second direction of operation (manually) and arranged on the control handle ▪ a coupling device by which the operating elements are mechanically coupled to the valve mechanism in such a way that by adjusting the first operating element in the first direction of actuation the valve mechanism is adjusted in the direction of the open position and by adjusting the second operating element in the second direction of actuation the valve mechanism is adjusted in the direction of the closed position, wherein the coupling device has a coupling element rotatably mounted about an axis of rotation, in particular in the operating handle, for transmitting a respective adjustment movement of the operating elements to the valve mechanism, wherein the operating elements are coupled to each other in terms of movement via the coupling element.

[0062] The advantages and optional features described above in connection with the ventilation valve can also be used to design the tube lifters, so reference is made to the above disclosure to avoid repetition.

[0063] Preferably, the operating device comprises a housing, in particular a two-part housing, which extends between the lifting hose connection and the optional end effector coupling. The housing provides, in particular, the operating handle.

[0064] The invention will be explained in more detail below with reference to the figures. They show: Fig. 1 a sketched representation of a design of a hose lifter; Fig. 2 a sketched representation of the operating device of the hose lifter according to Fig. 1 with coupled end effector; Fig. 3 the operating device according to Fig. 2 in a sectional view; Fig. 4. Sketched representation of an assembly of the operating mechanism of the operating device according to Fig. 3 in a sectional view; Fig. 5 the assembly according to Fig. 4 in an exploded view; Fig. 6 a sketched representation of the operating mechanism of the operating device according to Fig. 3 in a side view; Fig. 7. Sketched representation of an exemplary design of a ventilation valve in a perspective view; Fig. 8 the ventilation valve according to Fig. 7 in a side view; and Fig. 9a-c sketched representations of the operating device according to Fig. 3 to explain different operating positions of the controls.

[0065] In the following description and in the figures, the same reference symbols are used for identical or corresponding features.

[0066] The Fig. Figure 1 shows an embodiment of a tube lifter, which is designated by reference numeral 100. The tube lifter 100 comprises a lifting tube 102, which encloses an inner tube. The lifting tube 102 can be shortened by applying a vacuum to the inner tube and lengthened again by venting the inner tube. In other words, the lifting tube 102 is reversibly shortened or lengthened depending on the pressure level in the inner tube, e.g., under the influence of gravity.

[0067] In this example, the lifting hose 102 is held at a first (upper) end 104 on a manipulator 106, e.g., in the form of a column-mounted jib crane, and can thus be moved by the manipulator 106. In embodiments not shown, the lifting hose 102 can also be held on a support, e.g., a scaffold or a building ceiling.

[0068] To operate the hose lifter 100, an operating device 10 is provided (see detailed view). Fig. 2 and Fig. 3) The operating device 10 is held at the second (lower) end 106 of the lifting hose 102.

[0069] The hose lifter 100 also includes an end effector 108 for gripping an object (not shown). The end effector 108 is held on the operating device 10 via an end effector coupling 12 formed on the operating device 10 and is thus connected to the lifting hose 102. By shortening the lifting hose 102, the end effector 108, and thus an object gripped by the end effector 108, can be lifted.

[0070] By way of example and preferably, the end effector 108 is designed as a suction gripping device 110 for suctioning an object. As explained in detail below, in this example, the end effector 108 can be supplied with negative pressure through the inner space of the lifting hose 102. In embodiments not shown, the end effector 108 can also be designed, for example, as a hook or a mechanical gripper.

[0071] A preferred embodiment of the operating device 10 is described below with reference to the Fig. 2 and Fig. 3 explained in more detail.

[0072] The operating device 10 comprises an operating handle 14, which is shaped in such a way that an operator can grip it with one hand. Therefore, the operating device 10 is in particular a one-handed operating device.

[0073] As in Fig. As can be seen in Figure 3, the operating handle 14 is preferably designed as a hollow body. Specifically, the operating handle 14 can be formed by a housing section of a housing 16 of the operating device 10.

[0074] The operating device 10 also includes a lifting hose connection 18 for flow connection with the hose interior of the lifting hose 102 (see Fig. 3) The lifting hose connection 18 can in particular be part of a lifting hose coupling 20, which also includes a connecting device for the mechanical connection of the operating device 10 with the lifting hose 102.

[0075] The operating device 10 has the aforementioned end effector coupling 12 for coupling the end effector 108 on a side opposite the lifting hose connection 18 (see Fig. 3) The end effector coupling 12 can, for example, be designed as described in DE 10 2023 102 439.6, the disclosure content of which is hereby included by reference.

[0076] In this example, the end effector coupling 12 includes an optional suction port 22 for flow connection with the end effector 108. By way of example, the suction port 22 is flow-connected to the lifting hose port 18 via an optional tubular fluid guide 24 and can thus be supplied with negative pressure through the lifting hose 102. In embodiments not shown, such a fluid guide 24 can also be omitted.

[0077] The operating device 10 also includes a vent valve 26 for venting the lifting hose connection 18 and thus the interior of the lifting hose 102. Specifically, the vent valve 26 is designed to selectively open or close a flow connection between the lifting hose connection 18 and a vent connection 28, in particular a vent opening. The vent connection 28 is formed, for example, by corresponding openings or passages in the housing 16 (see figure). Fig. 3).

[0078] The ventilation valve 26 has a valve mechanism 30 which is adjustable between a closed position (flow connection between ventilation port 28 and lifting hose port 18 interrupted) and an open position (flow connection between ventilation port 28 and lifting hose port 18 released). An exemplary embodiment of such a ventilation valve 26 is described below with reference to the Fig. 7 and Fig. 8 explained in more detail.

[0079] The ventilation valve 26 is arranged in particular within the housing 16 of the operating device 10 (see figure). Fig. 3).

[0080] To actuate the ventilation valve 26, an operating mechanism 32 is provided, which comprises a first operating element 34 and a second operating element 36. The operating mechanism 32 also includes a coupling device 38, via which an actuating movement of the operating elements 32, 34 is transmitted to the valve mechanism 30 (explained in detail below).

[0081] The first control element 34 is adjustable along a first actuation direction 40, and the second control element 36 is adjustable along a second actuation direction 42. By way of example and preferably, the first and second actuation directions 40, 42 are parallel to each other.

[0082] As in Fig. As can be seen in Figure 3, the first control element 34 and the second control element 36 are, by way of example and preferably, arranged side by side on the same side of the control handle 14. Preferably, the control handle 14 is shaped such that an operator can grip it with one hand and operate the control elements 34 and 36 with that hand (e.g., the first control element 34 with the middle finger and the second control element 36 with the index finger).

[0083] As detailed below, with reference to the Fig. As explained in sections 9a to 9c, the operating elements 34 and 36 are those starting from a neutral position (see section 9a). Fig. 3 and Fig. 9a) mutually into an operating position (cf. Fig. 9b for the first control element 34 and Fig. 9c for the second control element 36) and a non-operating position (see Fig. 9b for the second control element 36 and Fig. 9c for the first control element 34) adjustable.

[0084] The first control element 34 and the second control element 36 are mechanically coupled via the coupling device 38 in such a way that when the first control element 34 is moved in the direction of actuation 40 (i.e. when the first control element 34 is actuated) the second control element 36 is automatically moved in the opposite direction of actuation 42 and vice versa.

[0085] The operating mechanism 32 is described below with reference to the Fig. 3, Fig. 4, Fig. 5 to Fig. 6 explained in more detail.

[0086] For example, from the Fig. 3 and Fig. As can be clearly seen in Figure 4, the first control element 34 is motionally coupled to a coupling element 48 via a first transmission element 44 in the form of a transmission pin, and the second control element 36 is motionally coupled to a coupling element 48 via a second transmission element 46. The coupling element 48 is in turn motionally coupled to the valve mechanism 30 via a connecting element 50 in the form of a transmission bracket 52.

[0087] The coupling element 48 is rotatably mounted about a pivot axis 56. In this specific example, the coupling element 48 is rotatably mounted in a guide section or guide receptacle 58 of a guide part 60.

[0088] The coupling element 48 is exemplary and preferably designed in the form of a drum 54.

[0089] The guide element 60 is inserted into and secured in the operating handle 14 (housing 16). In embodiments not shown, the guide receptacle 58 can also be integrally formed with the housing 16.

[0090] As from Fig. As can be seen in Figure 4, the transmission elements 44, 46 engage eccentrically on the coupling element 48, in particular on opposite sides with respect to the axis of rotation 56.

[0091] This is exemplified by the fact that the transmission elements 44, 46 have local recesses 62 which interact with bolts 64 provided on the coupling element 48. The bolts 64 are, by way of example, formed separately from the coupling element 48 and inserted into corresponding bores 66 in the coupling element 48. In embodiments not shown, the bolts 64 can also be formed integrally with the coupling element 48, for example by corresponding projections on the coupling element 48.

[0092] When the first control element 34 is actuated, i.e., adjusted in the first actuation direction 40, this adjustment movement is transmitted via the first transmission element 44 to the coupling element 48, which then rotates about the axis of rotation 56 (in the illustration according to Fig. 3 and Fig. 4 counterclockwise). This results in the second control element 36 being adjusted against the second actuation direction 42 due to the movement coupling via the coupling element 48 and the second transmission element 46.

[0093] As from the Fig. 4 and Fig. As can be seen in Figure 5, the transmission elements 44, 46 (transmission pins) are guided linearly in corresponding guides 68, 70 (pin guides) (along the direction of actuation 40, 42 of the associated control element 34, 36).

[0094] The guides 68, 70 for the transmission elements 44, 46 are exemplified in the guide section 60, in which the guide receptacle 58 for the coupling element 48 is also formed. As shown from Fig. As can be seen in Figure 5, the guides 68 and 70 are formed on opposite sides of the guide receptacle 58, for example in the form of bores. In embodiments not shown, the guides 68 and 70 can also be integrally formed with the housing 16.

[0095] As from Fig. As can be seen in Figure 4, the transmission elements 44, 46 are received in corresponding receptacles 72, 74 in the control elements 34, 36, so that the control elements 34, 36 are guided linearly via the transmission elements 44, 46 along their actuation directions 40, 42.

[0096] As mentioned above, an adjustment movement of the control elements 34, 36 is transmitted via the coupling element 48 to a connecting element 50, which in turn acts on the valve mechanism 30.

[0097] As from Fig. As can be seen in Figure 6, the connecting element 50 also engages the coupling element 48 eccentrically. In particular, the connecting element 50 is rotatably mounted on the coupling element 48 at a point of engagement 76. Therefore, when the coupling element 48 rotates about the axis of rotation 56, the connecting element 50 is repositioned.

[0098] In the representation according to Fig. 6. For example, when the first control element 34 is actuated and the coupling element 48 rotates counterclockwise, the connecting element 50 is moved upwards. Conversely, when the second control element 36 is actuated and the coupling element 48 rotates clockwise, the connecting element 50 is moved downwards. This enables actuation of the valve mechanism 30.

[0099] An exemplary embodiment of a ventilation valve 26 and its interaction with the operating mechanism 32 is described below with reference to the Fig. 7 explained.

[0100] In the example, the ventilation valve 26 includes a, in particular, valve housing 78, which defines a valve interior 80.

[0101] The valve housing 78 has two first openings 84 on one side and two second openings 86 on the opposite side. In embodiments not shown, more or fewer first or second openings 84, 86 may be provided.

[0102] For example, from Fig. As can be seen in Figure 3, the first two openings 84 are flow-connected to the lifting hose connection 18. The first openings 84 thus form negative pressure openings of the vent valve 26. The second two openings 86, on the other hand, are flow-connected to the vent connection 28 and thus form vent openings of the vent valve 26. A flow path from the vent connection 28 through the vent valve 26 to the lifting hose connection 18 is shown in Fig. 3 is shown by way of example by the dashed line designated with reference numeral 88.

[0103] A valve body 90 is arranged in the valve interior 80 (in the flow path 88 between the first openings 84 and the second openings 86). The valve body 90 is preferably designed as a drum which is rotatably mounted in the valve housing 78 about a valve body pivot axis 92.

[0104] As from Fig. As can be seen in Figure 8, the valve body rotation axis 92 is aligned parallel to the rotation axis 56 of the coupling element 48. In particular, the valve body rotation axis 92 is inclined, preferably orthogonally, to a main flow direction from the at least one second opening 86 to the at least one first opening 84.

[0105] The valve body 90 has a radial through-hole 94 for each pair of first opening 84 and associated second opening 86.

[0106] Depending on the rotational position of the valve body 90 about the valve body axis of rotation 92, a flow path between the first openings 84 and the second openings 86 is either blocked by the valve body 90 or opened through the through-openings 94. In this way, the lifting hose connection 18 and thus the interior of the lifting hose 102 can be vented as needed.

[0107] As from the Fig. 7 and Fig. As can be seen in Figure 8, the connecting element 50 (transmission bracket 52) ​​of the operating mechanism 32 described above engages the valve body 90, so that by adjusting the connecting element 50 a rotational position of the valve body 90 about the valve body rotation axis 92 - and thus an open position of the ventilation valve 26 - can be adjusted.

[0108] The exact functioning of the operating mechanism 32 and the ventilation valve 26 is explained below using exemplary operating configurations with regard to the Fig. Sections 9a to 9c are explained in more detail.

[0109] The Fig. Figure 9a shows an exemplary operating configuration of the operating device 10, in which both the first operating element 34 and the second operating element 36 are in the neutral position. In this neutral position, the vent valve 26 is at least partially open, allowing ambient air to flow into the interior of the lifting hose 102. By way of example, and preferably, the inflow of ambient air in the neutral position can be adjusted such that the lifting hose 102 is held in a defined initial floating position (between a maximally extended and a maximally retracted position).

[0110] In the specific example, the valve body 90 assumes a rotational position in the neutral position of the operating elements 34, 36 such that the through-openings 94 partially overlap with the first and second openings 84, 86.

[0111] If, starting from this operating configuration, the first operating element 34 is actuated (i.e., the first operating element 34 is pressed in the first actuation direction 40), the ventilation valve 26 is opened further and thus more ambient air flows into the hose interior of the lifting hose 102, so that it lengthens (cf. Fig. 9b). As a result of the forced coupling described above between the first and second control element 34, 36, the second control element 46 is automatically moved into the non-operating position (i.e., pushed out of the housing 16).

[0112] The Fig. Figure 9b shows the ventilation valve 26 in an open position, in which the ventilation valve 26 is fully open. In this specific example, when the first operating element 34 is actuated, the valve body 90 is moved via the coupling mechanism 38 into a rotational position in which the through-openings 94 completely overlap with the first and second openings 84, 86.

[0113] To shorten the lifting hose 102 again, the operator can, starting from the operating configuration according to Fig. 9b actuate the second control element 36 (i.e., press it into the housing 16 in the second actuation direction 42), which at least partially closes the ventilation valve 26 again.

[0114] The Fig. Figure 9c shows the ventilation valve 26 in a closed position, in which the ventilation valve 26 is completely closed, meaning that no or only a minimal amount of ambient air flows into the interior of the lifting hose 102. Consequently, the negative pressure in the lifting hose 102 increases, causing it to collapse.

[0115] In the specific example, when the second operating element 36 is actuated, the valve body 90 is moved via the coupling mechanism 38 into a rotational position in which the through-openings 94 no longer overlap with the first and second openings 84, 86 and thus the valve body 90 blocks a flow path between the first and second openings 84, 86.

[0116] As in a comparison of Fig. 9b and Fig.As can be seen in Figure 9c, when the second control element 36 is actuated, the first control element 34 is moved towards the non-actuating position as a result of the forced coupling via the coupling element 48 (i.e., pushed out of the housing 16 against the first actuation direction 40).

[0117] In configurations not shown, the ventilation valve 26 can also be designed differently.

[0118] For example, the valve mechanism 30 can include a valve flap which is pivotally mounted about a pivot axis. In this case, the connecting element 50 (transmission bracket 52) ​​may engage the valve flap, thus allowing the opening angle of the valve flap to be adjusted.

[0119] It is also conceivable, for example, that the valve mechanism 30 comprises one or more valve pistons which are coupled to the connecting element 50 (transmission bracket 52) ​​and are thus adjustable between an open position and a closed position.

[0120] The suction gripping device 110 can, in principle, be supplied with vacuum via a separate vacuum supply. Preferably, however, the suction gripping device 110 is supplied with vacuum via the optional fluid guide 24 and the suction port 22. In this context, it is possible that a control valve (not shown) is provided on the suction gripping device 110 itself, via which a vacuum supply provided via the suction port 22 can be selectively enabled (for suction and thus gripping an object) or shut off (for releasing the object).

[0121] However, it is also conceivable that such control of the vacuum supply to the suction gripping device 110 is implemented in the operating device 10. For example, the operating mechanism 32 can additionally interact with a control valve (not shown) which is designed to control a vacuum supply to the suction gripping device 110 via the fluid guide 24.

Claims

[1] Operating device (10) for a hose lifter (100), comprising: - a handle, in particular one-handed gripping handle (14), - a lifting hose connection (18); - a ventilation valve (26) for venting the lifting hose connection (18), wherein the ventilation valve (26) has a valve mechanism (30) which is adjustable between a closed position and an open position, - an operating mechanism (32) for actuating the ventilation valve (26), comprising: ◯ a first operating element (34) which is adjustable along a first actuation direction (40) on the operating handle (14), ◯ a second control element (36) which is adjustable along a second direction of actuation (42) on the control handle (14), ◯ a coupling device (38) by which the control elements (34, 36) are mechanically coupled to the valve mechanism (30) such that by adjusting the first control element (34) in the first actuation direction (40) the valve mechanism (30) is adjusted in the direction of the open position and by adjusting the second control element (36) in the second actuation direction (42) the valve mechanism (30) is adjusted in the direction of the closed position; characterized by , that the coupling device (38) has a coupling element (48) rotatably mounted about a pivot axis (56) for transmitting a respective adjustment movement of the control elements (34, 36) to the valve mechanism (30), wherein the control elements (34, 36) are coupled to each other via the coupling element (48). [2] Control device (10) according to claim 1, wherein the first and the second control element (34, 36) are coupled to each other via the coupling element (48) such that when the first control element (34) is adjusted in the first actuation direction (40) the second control element (36) is adjusted in the opposite direction to the second actuation direction (42) and vice versa. [3] Operating device (10) according to claim 1 or 2, wherein the coupling element (48) is designed as a drum (54) or coupling wheel, which is rotatably mounted in a guide section (58) of the operating device (10). [4] Operating device (10) according to one of the preceding claims, wherein the operating elements (34, 36) are coupled to the coupling element (48) via a respective, in particular pin- or bolt-shaped, transmission element (44, 46) such that a respective adjustment movement of the operating elements (34, 36) along the actuation directions (40, 42) is transmitted into a rotational movement of the coupling element (48) about the axis of rotation (56). [5] Operating device (10) according to the previous claim, wherein the transmission elements (44, 46) each engage eccentrically on the coupling element (48), in particular at the same radial distance to the axis of rotation (56) . [6] Operating device (10) according to one of claims 4 or 5, wherein the transmission elements (44, 46) engage the coupling element (48) at points of attack opposite to the axis of rotation (56). [7] Operating device (10) according to one of the preceding claims, wherein the first and the second operating element (34, 36) are guided linearly displaceable in the respective actuation direction (40, 42), preferably by means of the transmission elements (44, 46). [8] Operating device (10) according to one of claims 4 to 7, wherein the transmission elements (44, 46) are guided linearly displaceable in a respective guide (68, 70). [9] Operating device (10) according to the previous claim, wherein the guides (68, 70) of the transmission elements (44, 46) are formed in a guide part (60) in which the coupling element (48) is also rotatably received about the axis of rotation (56). [10] Operating device (10) according to one of the preceding claims, wherein the actuation directions (40, 42) of the operating elements (34, 36) are oriented parallel to each other. [11] Operating device (10) according to one of the preceding claims, wherein the coupling element (48) is mechanically coupled to the valve mechanism (30) via a transmission bracket (52). [12] Operating device (10) according to the previous claim, wherein the transmission bracket (52) engages eccentrically on the coupling element (48) and in particular has a curved path from the coupling element (48) to the ventilation valve (26). [13] Operating device (10) according to one of the preceding claims, wherein the operating elements (34, 36) are arranged on the same side of the operating handle (14) and are in particular designed to be inserted into it. [14] Operating device (10) according to one of the preceding claims, wherein the operating mechanism (32), in particular the first operating element (34), the second operating element (36) and / or the coupling device (38), and / or the valve mechanism (30) of the venting valve (26) are designed to be self-locking such that the valve mechanism (30) remains in a set configuration. [15] Operating device (10) according to one of the preceding claims, wherein the ventilation valve (26) has a valve housing (78), in particular a disc-shaped one, wherein the valve housing (78) has at least one first opening (84) which is fluid-connected to the lifting hose connection (18), and at least one second opening (86) which is fluid-connected to the atmosphere, in particular a ventilation connection (28) of the operating device (10), wherein the valve mechanism (30) comprises a valve body (90), in particular in the form of a drum or roller, wherein the valve body (90) is rotatably mounted about a valve body axis of rotation (92), in particular parallel to the axis of rotation (56), in particular in the valve housing (78), and has at least one radial through-opening (94), wherein the valve body (90) is arranged in a flow path between the at least one first opening (84) and the at least one second opening (86) such thatthat the valve body (90) assumes a closed position in a first rotational position in which a flow connection between the at least one first opening (84) and the at least one second opening (86) is interrupted through the valve body (90), and that the valve body (90) assumes an open position in a second rotational position in which a flow connection between the at least one first opening (84) and the at least one second opening (86) is established through the at least one through-opening (94). [16] Operating device (10) according to the previous claim in conjunction with claim 11, wherein the valve body (90) is coupled to the coupling element (48) via the transmission bracket (52) in such a way that a rotary movement of the coupling element (48) about the axis of rotation (56) is transmitted into a rotary movement of the valve body (90) about the valve body axis of rotation (92). [17] Control device (10) according to one of claims 1 to 14, wherein the valve mechanism has at least one valve piston, in particular two counter-rotating valve pistons, wherein the at least one valve piston is adjustable along a switching direction between a closed position and an open position, wherein the first and the second control element (34, 36) are mechanically coupled to the at least one valve piston via the coupling device (38) such that by actuating one control element the at least one valve piston is adjusted in the switching direction and by actuating the other control element the at least one valve piston is adjusted against the switching direction. [18] Operating device (10) according to one of the preceding claims, wherein the operating device (10) has an end effector coupling (12) for coupling an end effector (108), wherein the end effector coupling (12) comprises a suction port (22) for flow connection with the end effector (108), wherein the lifting hose port (18) and the suction port (22) are flow-connected to each other via a fluid guide (24). [19] Hose lifter (100) with an operating device (10) according to one of the preceding claims.

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