Reeling device

Abstract

A device for winding up a cable or a hose (9), comprising a drum (1) formed from a hollow cylindrical winding cylinder (21), on each of whose two end faces a flange (22, 31) is arranged and which is rotatably mounted on at least one axis (23, 41), wherein means for automatically winding up a cable or hose (9) onto the winding cylinder (21) are arranged, which means comprise a spring element and a control pin (74) guided in a slotted guide (36), characterized in that the drum (1) is arranged openly, i.e. not enclosed, wherein a damping disc (4) is arranged in a rotationally fixed manner on a first axis (41) of the at least one axis, on which damping disc the control pin (74) is arranged, wherein the slotted guide track (36) is arranged on the drum (1).

Description

The invention relates to a device for winding a cable or a hose according to the preamble of claim 1.Various types of tube winding devices with means for automatic winding are known. These comprise a drum which is housed in a housing in which it is rotatably mounted. Wound onto the drum is a hose, the free end of which projects through an opening of the housing. The drum is prestressed relative to the housing by a helical spring and has a slotted guide path formed by a concentric arrangement of guide grooves which are connected to one another by oblique groove sections, in which slotted guide path a control pin of a rotor is guided which is pivotably mounted in the housing. The rotor permits the control pin to lock into a locking position after a complete or partial rotation of the drum, as a result of which the drum, which is subjected to a torque by the helical spring, is blocked. A roll-up device of the above type is described, for example, in DE 10 2005 031 527 A1 and DE 10 2011 005 988 A1.The disadvantage of the known rolling-up devices is that they are difficult to clean, if at all. By means of multiple unwinding and winding processes, for example when used on construction sites or in animal stables, dirt is introduced via the hose into the housing, which accumulates there and can lead to an obstruction of the winding process as far as damage to the hose. For cleaning the housing, a complex dismantling of the roll-up device is necessary.The invention seeks to remedy this. The invention is based on the object of providing a device for rolling up a cable or a hose, which device enables automatic rolling up of the cable or the hose and is easy to clean at the same time. According to the invention, this object is achieved by a device having the features of claim 1.The invention provides a device for winding a cable or a hose which enables automatic winding of the cable or the hose and is easy to clean. Because the drum is arranged open, i.e. not housed, simple cleaning is made possible. This counteracts accumulation of dirt introduced through the hose or cable, which impairs the function. The tube and the drum are easily accessible and cleaned by the absence of a housing. Because a damping disk is arranged on a first axis of the at least one axis in a rotationally fixed manner, on which damping disk the control pin is arranged, wherein the slotted guide track is arranged on the drum, automatic rolling-up of the cable or of the hose is achieved even without enclosing the drum.In a further development of the invention, one of the two flanges is formed by a housing part, by which the damping disk is enclosed. This prevents contamination of the slide track and of the control pin, which are accommodated within the housing part in a manner protected from external influences. The housing part is preferably embodied in two parts and has a cover, by means of which it is closed.The housing part with the damping disk arranged therein, which is arranged on the first axle in a rotationally fixed manner, forms an encapsulated roll-up unit in which the entire roll-up mechanism is arranged in a manner protected from external influences. Thus, for example, a blockage due to contamination of the slide track is prevented. In addition, the encapsulated unit serves as a protection for the operator against an engagement in the retractor mechanism, as a result of which the risk of injury, for example due to jamming, is counteracted.The thus formed reeling unit can be easily customized as a module to different products to be reeled, such as power cables, fluid hoses or also ropes.In one embodiment of the invention, the spring element is arranged in the housing part, wherein the spring element is preferably formed by a helical spring or a torsion spring which is connected at one end thereof to the first axle and at the other end thereof to the housing part. As a result, the spring element is protected against contamination. Moreover, the spring element in the encapsulated unit is protected from corrosion by corrosive media such as water or cleaning agents.In a further embodiment of the invention, the housing part is rotatably connected to the first axle. As a result, the winding cylinder is rotatably mounted on the first axle.In a further development of the invention, the first axle is guided through the damping disk in a rotationally fixed manner, wherein the damping disk has at least one receptacle in which a brake wheel is rotatably mounted and wherein the first axle is preferably a component of the damping disk. This achieves damping of the drum at an excessive rotational speed, as may be caused by excessive prestressing of the spring element. The damping disk is arranged together with the first axis in a fixed position with respect to the rotating drum.In one embodiment of the invention, the at least one brake wheel has at least one centrifugal force-driven brake shoe and a toothed ring which engages in an internal toothing arranged in the housing part. This achieves a simple and reliable braking device with a rotation-dependent braking action. Two or three brake wheels are advantageously arranged.In a further embodiment of the invention, the control pin is pivotably mounted on the damping disk, wherein the control pin is preferably prestressed against the slotted link via a spring part. This achieves reliable control of the drum, wherein the damping disk, which is arranged in a fixed position, serves as an abutment for the control pin.In a further development of the invention, the other of the two flanges is connected to a second axle via which it is rotatably mounted. This achieves a mounting of the drum on both sides on the first axis and the second axis. The two axes are preferably arranged on a common central axis which runs centrally axially through the drum.In one embodiment of the invention, a passage is guided through the second axis, into which a connecting piece is introduced, which is preferably rotatably connected to the axis. In this case, the connecting piece for use of the device as a hose rolling device can be designed as a hose connecting piece. Alternatively, the connection piece for using the device can be designed as a cable drum as an electrical connection piece which is connected to an electrical line which is led through the feedthrough. This makes it possible to supply a hose wound onto the device with water or a cable wound onto the device with an electrical voltage.In a further embodiment of the invention, a bearing block is arranged on each side of the drum, wherein a first bearing block is connected to the first axle in a rotationally fixed manner and the second bearing block is rotatably connected to the second axle. This allows the device to be fastened to a stationary object, for example a baffle, or to a mobile object, for example a high-pressure cleaner.Other developments and embodiments of the invention are specified in the remaining dependent claims. An exemplary embodiment of the invention is illustrated in the drawings and is described in detail below. The following are shown: FIG. 1 is a schematic illustration of a hose rolling device in cross section; FIG. 2 shows the hose rolling device from FIG. 1 in an exploded illustration; FIG. 3 shows the representation of the damping disk of the hose rolling-up device from FIG. 1 a) in a three-dimensional representation; b) in a side view; c) in a plan view; FIG. 4 shows the representation of a brake wheel of the damping disk of the hose rolling device from FIG. 1 a) in a three-dimensional representation; b) in a plan view; FIG. 5 shows the representation of the rotor of the damping disk of the hose rolling device from FIG. 1 a) in a three-dimensional representation; b) in the side view; c) in the plan view; d) in the view from the front; FIG. 6 shows the representation of the rotor of the damping disk of the hose rolling device from FIG. 1.The hose rolling device selected as an exemplary embodiment comprises a drum 1, onto which a hose 9 is wound and which is rotatably mounted between two bearing blocks 8 via two axles 23, 41.The drum 1 is composed of a first drum part 2 and a second drum part 3. The first drum part 2 comprises a hollow cylindrical winding cylinder 21, on the end face of which a circular disc-shaped flange 22 is placed. Centrally, the flange 22 has, on its side facing the winding cylinder 21, a hollow cylindrical journal 23 which delimits a passage 24 opening into the winding cylinder 21. Within the winding cylinder 21, three hollow cylindrical connecting pins 25 are arranged on the flange 22 at regular distances from one another and at a distance from the feedthrough 24.The second drum part 3 comprises a housing part 31 forming a further flange, having a circular disc-shaped base 32, into which a bore 321 is introduced centrally and to which a side wall 33 adjoins, which comprises a hollow cylindrical first wall section 331, which is provided with an internal toothing 332 and to which a circular step 333 arranged parallel to the plane of the base 32 adjoins, which step merges into a second hollow cylindrical wall section 334. On its side facing the first drum part 2, an annular web 34 is arranged on the bottom 32 of the housing part 31 concentrically with the bore 321, the outer diameter of which web corresponds to the inner diameter of the winding cylinder 21 of the first drum part 2 into which it is inserted.Between the bore 321 and the annular web 34, three connecting pins 35 provided with an internal thread are arranged on the bottom 21 of the housing part 31 in a radially regularly spaced manner, said connecting pins having a diameter-reduced connecting head 351 at the end, with which they are inserted into the connecting sleeves 25 of the first drum part 2. Concentrically to the web 34, a slotted guide 36 is arranged on the base, which is formed from two concentric circular-arc-shaped guide grooves which are connected to one another via obliquely running groove sections.The housing part 31 is connected to the first drum part 2 by connecting screws, not shown, which are inserted into the connecting sleeves 25 and screwed into the inner threads of the connecting pins 35. The housing part 31 has a cover 37, via which it is closed and which is inserted into the second wall section 334 and rests on the shoulder 333, to which it is screwed.Inserted into the housing part 31 of the second drum part 3 between the bottom 32 and the cover 37 is a damping disk 4, through which an axis 41 is centrally guided. On their side facing the bottom 32 of the housing part 31, three hollow cylindrical first receptacles 42 functioning as a brake drum are arranged on the damping disk 4 at a distance from the axis 41, which first receptacles each have a central pin 43 for receiving a brake wheel 6. The axis pins 43 of the receptacles 42 lie on a common imaginary circular path arranged concentrically to the axis 41. Opposite the central receptacle 42, a second receptacle 44 in the form of a segment of a circle is provided on the damping disk 4, in which receptacle an axle receptacle 45 for the pivotable fastening of a rotor 7 is arranged. The second drum part 2 is rotatably mounted on the axle 41 of the damping disk 4 on its side facing the bottom 32 of the housing part 31 via a bearing 38 which frames the bore 321 of the bottom part 32 of the housing part 31.On the side of the damping disk 4 facing away from the base 32, the shaft 41 is guided through the cover 37, which for this purpose is provided centrally with a bore 371, in which a bearing 38 is arranged, via which the cover 37 is rotatably mounted on the shaft 41. A spiral spring 5 is inserted into the cover 37 surrounding the shaft 41 and is connected with its inner end to the shaft 41 and with its outer end to the cover 37.The brake wheels 6 are identical in the exemplary embodiment. The brake wheel 6 is formed from a cylindrical central piece 61 which has an axial axle receptacle 62, by means of which the brake wheel 6 is rotatably mounted on the first axle pin 43 of a first receptacle 42 of the damping disk into which it is inserted. The center piece 61 is framed by two approximately semicircular ring-shaped brake shoes 63 which complement each other to form a ring which runs concentrically to the center piece 61 and which has on its outer side facing away from the center piece 61 two projections 64 which are arranged offset from each other by 180°. The brake shoes 63 are of identical design and are each fastened at one end to the center piece 61 via a web 65 running radially to the center piece 61, the two webs 65 being arranged diametrically opposite on the center piece 63. In this case, the brake shoes 63 have a reduced wall thickness in the region of the transition to the respective web 65, as a result of which the brake shoes 63 are pivotably connected to the central piece 62. The axle receptacle 62, in a framing manner, is arranged on the end face of the central piece 61 on its side facing away from the damping disk 4 a toothed ring 66 which engages in the internal toothing 332 of the housing part 31.The rotor 7 comprises a base part 71 with a journal 72 which is inserted into the journal receptacle 45 of the second receptacle 44 of the damping disk 4 and via which the rotor 7 is pivotably connected to the damping disk 4. A radially projecting arm 73 is arranged on the rotor 7, which arm has a control pin 74 at the end facing the journal 72, which pin engages in the slotted guide 36 of the housing part 31. On its side facing the journal 72, the arm 73 has a spring tongue 75 which is formed angled in the direction opposite the arm 73. The spring tongue 75 abuts the damping disk 4, whereby the arm 73 of the rotor 7 is prestressed with its control pin 74 against the slotted guide 36.On both sides of the drum 1, two bearing blocks 8, 82 are placed against them. The first bearing block 8 is provided with a blind bore 81, into which the axle 71 of the damping disc 4 is introduced and connected thereto in a rotationally fixed manner. The second bearing block 82 has an axle receptacle 83 in which the axle journal 23 of the first drum part 2 engages and is rotatably fastened via a first bearing 84. A passage 24 is introduced into the axle receptacle 83, through which a connecting piece 85 is guided, which opens inside the winding cylinder 21 and is connected to the tube 9 wound onto the winding cylinder 21. The connecting piece 85 is mounted in the second bearing block 82 via a second bearing 86 such that it can rotate about its longitudinal axis.The device realized in this way is fastened via the two bearing blocks 8, 82 to a stationary device, for example a stable wall, or to a mobile device, for example a high-pressure cleaner. By pulling on the hose 9, the latter is unrolled from the drum 1. Here, the housing part 31 of the second drum part 3 acting as a flange of the drum 1 is rotated relative to the fixed axis 41, as a result of which the helical spring 5 is tensioned. At the same time, the control pin 74 of the rotor 7 pivotably mounted on the fixed damping disk 4 moves within the slotted guide 36 of the housing part 31; when the tensile force on the hose 9 ends, the drum 1 is rotated in the opposite direction by the prestress of the helical spring 5 until the control pin 74 is moved within the slotted guide 36 into a blocking position. In the now extended length, the hose 9 is now available for use. By a short tension on the hose 9, the control pin 74 can be moved out of the blocking position and the drum 1 is rotated via the prestressing force of the helical spring 5, whereby the hose 9 is wound up.During rotation of the drum 1, the brake wheels 6, which are in engagement with the internal toothing 332 of the housing part 31 via their toothed rim 66, are set in rotation. As the rotational speed of the brake wheels 6 increases, their brake shoes 63 are moved outwards due to the centrifugal forces, as a result of which they are pressed against the inner wall of the respective first receptacle 42 functioning as a brake drum. As a result, the rotational speed of the drum 1 is decelerated when a limit speed is reached.The device according to the invention is characterized in particular in that it has an encapsulated retractor unit in which the entire retractor mechanism, in particular comprising the slotted guide 36 with the control pin 74 of the rotor 7 engaging into it, the toothed rim 66 with the brake wheels 6 toothed with it and the spring element, in the present case a helical spring 5, is encapsulated in the housing part 31 closed via the cover 37.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2005 031 527 A1

[0002] DE 10 2011 005 988 A1

[0002]

Claims

Device for winding a cable or a tube (9), comprising a drum (1) which is formed from a hollow cylindrical winding cylinder (21), on each of whose two end faces a flange (22, 31) is placed and which is rotatably mounted on at least one axle (23, 41), wherein means for automatically winding a cable or tube (9) onto the winding cylinder (21) are arranged, which comprise a spring element and a control pin (74) guided in a slotted guide (36), characterized in that the drum (1) is arranged open, i.e. not housed, wherein a damping disc (4) is arranged in a rotationally fixed manner on a first axle (41) of the at least one axle, on which damping disc the control pin (74) is arranged, wherein the slotted guide track (36) is arranged on the drum (1).Device according to claim 1, characterised in that one of the two flanges is formed by a housing part (31), by which the damping disc is enclosed.Device according to claim 2, characterised in that the spring element is arranged in the housing part (31), wherein the spring element is preferably formed by a helical spring (5) or a torsion spring which is connected at its one end to the first axle (41) and at its other end to the housing part (31).Device according to claim 2 or 3, characterised in that the housing part (31) is rotatably connected to the first axle (41).Device according to claim 4, characterised in that the first axle (41) is guided through the damping disc (4) in a rotationally fixed manner, wherein the damping disc (4) has at least one first receptacle (42), in which a brake wheel (6) is rotatably mounted, and wherein the first axle (41) is preferably a component of the damping disc (4).Device according to claim 5, characterised in that the at least one brake wheel (6) has at least one centrifugal force-operated brake shoe (63) and a toothed ring (66) which engages in an internal toothing (332) arranged in the housing part (31).Device according to claim 5 or 6, characterised in that the control pin (74) is pivotably mounted on the damping disc (4), wherein the control pin (74) is preferably prestressed against the slotted guide (36) via a spring part.Device according to one of claims 4 to 7, characterised in that the other of the two flanges is connected to a second axle (23) by means of which it is rotatably mounted.Device according to claim 8, characterised in that a passage (25) is guided through the second axle (23), into which a connecting piece (85) is introduced, which is preferably rotatably connected to the second axle (23), wherein the connecting piece (85) is either formed as a hose connecting piece or is formed as an electrical connecting piece, which is connected to an electrical line, which is guided through the passage (25).Device according to claim 8 or 9, characterised in that a bearing block (8, 82) is arranged on each side of the drum, wherein a first bearing block (8) is connected to the first axle (42) in a rotationally fixed manner and the second bearing block (82) is rotatably connected to the second axle (23).

Images