EP3950083A1 - Winde für audiogeräte und system damit - Google Patents

Winde für audiogeräte und system damit Download PDF

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Publication number
EP3950083A1
EP3950083A1 EP20783560.4A EP20783560A EP3950083A1 EP 3950083 A1 EP3950083 A1 EP 3950083A1 EP 20783560 A EP20783560 A EP 20783560A EP 3950083 A1 EP3950083 A1 EP 3950083A1
Authority
EP
European Patent Office
Prior art keywords
cable
reel
drum
cable portion
winch according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20783560.4A
Other languages
English (en)
French (fr)
Other versions
EP3950083A4 (de
Inventor
Mikhail Aituganovich RAPPE
Sergey Vladimirovich TITOV
Evgenii Vasilievich VASILCHENKO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obschestvo S Ogranichennoi Otvetstvennostiu "gella"
Original Assignee
Obschestvo S Ogranichennoi Otvetstvennostiu "gella"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from RU2019110211A external-priority patent/RU2731014C1/ru
Priority claimed from RU2019110212A external-priority patent/RU2705036C1/ru
Application filed by Obschestvo S Ogranichennoi Otvetstvennostiu "gella" filed Critical Obschestvo S Ogranichennoi Otvetstvennostiu "gella"
Publication of EP3950083A1 publication Critical patent/EP3950083A1/de
Publication of EP3950083A4 publication Critical patent/EP3950083A4/de
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J1/00—Stage arrangements
    • A63J1/02—Scenery; Curtains; Other decorations; Means for moving same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4449—Arrangements or adaptations to avoid movable contacts or rotary couplings, e.g. by the use of an expansion chamber for a lenght of the cord or hose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/34—Handled filamentary material electric cords or electric power cables

Definitions

  • the invention relates to lifting devices for raising and lowering audio (acoustic) equipment in sound and recording systems used in concert halls, on theater stages, in conference rooms, studios, etc.
  • the winches are installed on ceiling structures above the point where the microphone is to be fed to.
  • winches on the market in which cable is laid on a stationary drum using a stacker that rotates around the drum.
  • the hanging cable with the microphone twists, that is why the use of such winches is unacceptable or considerably limited.
  • a microphone winch is disclosed in US 5,526,997 .
  • the winch ( Fig.1 ) comprises a housing that contains two reels, main and secondary, mounted on the same bushing having a hole extending therethrough from the main reel to the secondary reel.
  • a signal cable is wound upon the two reels with a first end cable portion being coiled upon the main reel, an intermediate portion thereof extending through the hole formed in the common bushing member and a second end cable portion being coiled about the secondary reel.
  • the microphone is connected to the first cable portion.
  • the second cable portion is shorter than the first one and includes an end that is attached to the housing to provide a stationary electrical connection with the path of audio recording equipment.
  • the cable By actuating the reels, the cable is wound on the reel or unwound from the reel, thereby positioning the microphone in vertical.
  • the second cable portion is first unwound and then rewound onto the secondary reel.
  • the transition zone from the intermediate cable portion passing through the hole in the bushing (i.e. approximately from the slot 80 in Fig.1 ) to the second cable portion during rotation of the reel experiences frequent serious bends and twists, while the remaining sections of the second cable portion, due to entanglement and formation of loops, can themselves both experience strong tension, and cause excessive tension in the same transition zone. That is, a relatively lower risk of damage to the cable exists only in the close to the extreme positions of the main part of the reel, either close to the fully unwound state, or close to the fully wound state, which prevents using the same winch in different stage configurations.
  • the compartment enclosing the second cable portion consists of a first wall that is stationary relative to the winch body, a second stationary wall and a movable bushing.
  • the second wall is covered with a Teflon film, while the other parts are not.
  • friction occurs in this compartment in the pairs cable-cable (PVC-PVC), cable-second wall (PVC-Teflon), and cable-first wall and cable-hub (for example, PVC-metal and/or PVC-plastic depending on the material of the bushing and first wall).
  • the present invention is intended to overcome at least some of the above problems.
  • a winch for audio equipment in accordance with the present invention, it is proposed to make walls of the compartment for the second cable portion completely movable relative to the winch body, to insert the cable into the compartment from the main part of the drum from the edge, rather than from the center, and, on the contrary, to draw the cable out from the compartment for connection with external equipment through the center of the compartment, and herewith to make all inner surfaces of the compartment sliding relative to each other.
  • a winch for audio equipment comprising a cable and a housing that contains:
  • the audio equipment is one of a microphone and a loudspeaker.
  • the side plates, the barrel and the annular wall of the reel serve as walls of said compartment.
  • At least one of the side plates, the barrel or the annular wall of the reel is separated from respective wall of the compartment.
  • the annular wall and/or the barrel of the reel presents a series of connecting elements that connect the reel side plates and are arranged along the line of the circumference with center at the axis of the reel, the distance between the connecting elements being chosen to prevent the cable from bulging out from the reel.
  • the annular wall and/or the reel barrel presents a solid wall arranged along the line of circumference with center at the axis of the reel.
  • the distance between the annular wall and the reel barrel is not less than the triple number of coils of the reel in the fully wound state.
  • the sliding material presents sliding pads laid on the inner surface of the reel side plates, the total gap between the cable and the pads being less than one diameter of the second cable portion.
  • the pads present films of Lavsan or polyethylene terephthalate.
  • the sliding material is a coating applied to the inner surface of the reel side plates, the total gap between the cable and said coating being less than one diameter of the second cable portion.
  • the sliding material is grease, the total gap between the cable and the reel side plates being less than one diameter of the second cable portion.
  • the cable coating within the reel is grease.
  • the cable coating within the reel is a semi-synthetic grease containing anti-scuff additives and a solid filler.
  • sheath of the second cable portion is sliding.
  • the second cable portion and the first cable portion are made of different types of cable.
  • the second cable portion and the first cable portion are made of the same type of cable as a whole.
  • the second cable portion presents a balanced cable with quadruple conductors in 2*2 structure.
  • the second cable portion comprises a cable filled with filaments or fibers.
  • the second cable portion presents a cable with a tinned copper braided shield covering at least 95% of the cable surface.
  • the second cable portion presents a cable having cross-linked polyethylene insulation.
  • the second cable portion comprises a cable with stranded conductors made of annealed copper with a wire diameter of less than 0.1 mm.
  • the advantages offered by the present invention include increased versatility, reliability and service life of the winch.
  • Embodiments of the invention are not limited to the embodiments described herein, and a person skilled in the art will be able to propose, based on the information set forth in the description and the knowledge of the prior art, other embodiments of the invention without departing from the spirit and scope of the present invention.
  • a winch in accordance with the present invention is intended for remotely controlled raising and lowering of audio equipment.
  • the audio equipment can be, for example, microphones for audio recording during concerts, loudspeakers for creating the necessary acoustic stage during performances, and any other suitable equipment.
  • the winch is mounted over the point at which the audio equipment is to be positioned, and can be mounted either on a fixed base, such as ceiling structures, technical decks or grates, or a movable base, for example, soffits.
  • the winch comprises a housing 1 consisting of a metal frame 2 with metal (for example, aluminum) panels 3 fixed on it. At least some of the panels are removable to allow for maintenance, start-up, adjustment, etc.
  • both the frame and the housing panels can be made of other materials that provide required mechanical and strength characteristics, for example, plastics, metal-plastic composites, etc.
  • the housing encloses all of the basic mechanical units of the winch: a drum 4, a drive 5, and a stacker 6.
  • Audio equipment is suspended on a cable 7 or, if appropriate, on a carrier wire rope 8 (shown further in Fig.3 ).
  • the drum 4 of the winch is intended for spooling and unspooling the cable 7.
  • the carrier wire rope 8 can also be spooled on the drum.
  • the drum 4 has a split construction and consists of two parts. In a first part 10 of the drum, a first portion 7 of the cable is spooled, and in a second part 11 of the drum, a second portion 9 of the cable is spooled, which makes the signal path continuous.
  • a partition 13 (optional, see Fig.4 ) separates the first part 10 of the drum from the second part 11 of the drum.
  • the first cable portion 7 is laid on the drum coil to coil from one edge of the first part of the drum towards the other edge.
  • One end of the first cable portion 7 is intended to be connected to the audio equipment being suspended; for this purpose, it can be provided with a connector and/or a fastening element, while the second end of the first cable portion 7 is fixed on the first part 10 of the drum and connected to the second cable portion 9.
  • the second part 11 of the drum is intended for spooling the second cable portion 9 and forms a compartment enclosing a reel 15 having two flat side plates (or, in other words, stoppers, sidewalls) 16 and 17 and a barrel located on a central bushing 14 of the drum (or in other words, a base) 18, on which the second cable portion 9 is spooled.
  • the reel barrel can have either cylindrical shape or any other suitable shape, for example, a cylinder with a V-notch with rounded edges for cable outlet.
  • the arrangement of the reel 15 on the central drum bushing 14 provides rotation of the reel simultaneously with the first part 10 of the drum.
  • One of the reel side plates (16) separates the reel from the first part 10 of the drum.
  • the reel side plates 16 and 17 are joined together by an outer annular wall 19 having a diameter greater than the diameter of the reel barrel 18.
  • One end of the second cable portion 9 is connected to the first cable portion 7, fixed in the region of the reel annular wall 19 and inserted into the reel either through the annular wall 19, or next to it through one of the side plates (for example; Fig.3 shows schematically that the second cable portion 9 is inserted into the reel through the side plate 16 near the annular wall 19).
  • Second end of the second cable portion 9 is fixed in the region of the reel barrel and led out from the reel, for example, through a hole in the reel barrel or in the side plate near the barrel, or through the aforementioned V-notch in the barrel for cable outlet.
  • the led out end of the second cable portion 9 is intended to be connected to an external signal path, for which purpose it can comprise a connector and/or a fastening element on it.
  • the second cable portion (or, more precisely, the segment of the second cable portion between its ends) is laid into the cavity between the side plates, the barrel and the annular wall of the reel, as shown in Fig.5 .
  • Fig.6 shows the process of winding the second cable portion from one extreme position to the other extreme position.
  • the central bushing is stationary, and the compartment (reel) rotates.
  • the fixed end of the second cable portion is led out through a central bushing having minimum radius limiters.
  • the fixed end of the second cable portion is intended to be connected to an external signal path connected to the external audio equipment.
  • the connection point of the second cable portion to the external signal path can be fixed to the winch housing.
  • the movable end of the second cable portion is led out of the reel through the annular wall or the side plate into the first part of the drum, where the first cable portion is connected to it.
  • the movable end of the second cable portion rotates with the drum around the central bushing, thereby pulling the rest of the second cable portion laid in the reel.
  • the tension and the range of bending angles of the cable in the region of the movable end are small and relatively constant, and twisting is practically absent.
  • the remaining parts of the second cable portion experience uniform small bends and straightening with a slight tension. All parts of the reel move together at the same time, thereby reducing negative impact on the cable.
  • the second cable portion changes the direction of winding.
  • the tension and the range of bending angles of the cable in the region of the fixed end are small, and twisting is practically absent.
  • the second cable portion contains ten cable coils, this allowing the drum to make 20 revolutions between extreme positions in which the second cable section is tightened until it stops.
  • the structure according to the present invention is reliable and simple, and provides a continuous signal path from the suspended audio equipment to the point of connection to an external signal path connected to the external audio equipment, thereby increasing the noise immunity of the signal path.
  • cable in the structure is subject to lower loads, which further increases its wear resistance and noise immunity, and also enables using the winch structure to work in any winding ranges and employing the same winch in different stage configurations. Therefore, increased versatility, reliability and lifespan of the winch are provided.
  • the side plates, barrel and annular wall of the reel serve as walls for the compartment for the second part 11 of the drum, that is, the reel is essentially a compartment.
  • the side plate 16 can serve as the partition 13.
  • the compartment for the second part 11 of the drum may have additional walls around the reel 15, both fixed on the drum and fixed on the housing, and then at least one of the side plates, barrel or annular wall of the reel is separated from the corresponding wall of the said compartment.
  • additional protection measures for the second drum part such as additional shielding, preventing damage to the cable and fall out of the content of the second drum part into the cavity of the housing 1.
  • Each loop formed at the drum rotation reversal has a size of about 3-4 cable diameters and increases the radius of reel winding.
  • space for the reel may not be enough, and mechanical stress on the cable increases.
  • Cylindrical reel is the best for this.
  • its annular wall and barrel should be positioned along the circumferential line (or near it) with the center at the reel axis.
  • this can be achieved, for example, by making the annular wall and/or the barrel of the reel in the form of a series of connecting elements joining the side plates of the reel and arranged along the circumferential line with the center at the reel axis, and the distance between the connecting elements should be chosen so as to exclude bulging of the cable from the reel (for example, it should be less than 2-3 cable diameters).
  • Such connecting elements can be, for example, metal studs 12, which provide a threaded connection, as shown in Fig.4 and 5 , bolts, and elements of any other shape, size, material and method, connections suitable for a particular application. This option can provide structural rigidity, reduce weight and material consumption, and increase accuracy of setting the distance between the reel side plates for providing a uniform specified load on the cable in all parts of the reel, and thereby enhancing the reliability.
  • annular wall and/or the barrel of the reel can be made as a solid wall arranged along the circumferential line with center at the axis of the reel.
  • the solid wall can be either independent and made of a hard material, or, for example, it can be a flexible ring made of metal tape, laid along the connecting elements that define the size of the compartment (for example, abutting against them). This option can further reduce the likelihood of the reel content falling out or bulging outward, and thereby enhance the reliability.
  • the distance between the annular wall and the reel barrel at least three times the number of coils of the reel in a fully spooled state.
  • polymer pads made of a highly sliding material for example, Lavsan or polyethylene terephthalate i.e. Teflon
  • the total gap between the cable and the pads should be less than one diameter of the second cable portion.
  • the sliding material covering the reel side plates may be another hard or soft coating applied to the inner surface of the reel side plates, for example, by spraying, gluing, electroplating, etc., and having suitable sliding properties with respect to the cable coating.
  • the total gap between the cable and the coating is less than one diameter of the second cable portion.
  • the sliding material covering the reel side plates can be grease, in which case the total gap between the cable and the reel side plates should be less than one diameter of the second cable portion.
  • the cable inside the reel may be coated with grease.
  • the reel (or, in particular, the reel side plate) is made of PVC (or covered with a PVC material), and the second cable portion has a PVC sheath, then only friction in PVC-PVC pairs will occur in the reel cavity, and then it is enough to cover the cable and side plates with a grease that improves sliding in this pair. This facilitates assembly of the reel while retaining all of the previously mentioned advantages.
  • a cable having no PVC sheath, but having a different, sliding sheath, or covered with a sliding sheath can be selected.
  • grease may not be necessary if the cable sheath provides acceptable sliding properties in cable-cable and wire-reel pairs. It also facilitates assembly of the reel while retaining all of the aforementioned advantages.
  • External signal path to which the fixed end of the second cable portion is connected, and external audio equipment, may be of different nature.
  • the audio equipment suspended on the winch is a microphone
  • the external signal path is the output signal path with respect to the winch and can be connected, for example, to audio recording equipment.
  • the suspended audio equipment is a loudspeaker
  • the external signal path is the input signal path for the winch and can be connected to, for example, a record player, mixing board, etc.
  • the cable can be made as a composite cable, i.e. the second cable portion and the first cable portion are made of different types of cable, and one-piece, i.e. the second cable portion and the first cable portion are made of the same type of cable as a whole.
  • the composite option does not affect the quality of the signal passing through the cable, since the junction between the first and second cable portions is rigid, immovable and reliable. This increases versatility of the winch while maintaining all other advantages.
  • the following types of cables can be used as the second cable portion.
  • a stacker 6 can be used.
  • the force from the drive is also transmitted to the stacker with a carriage, which moves linearly along the axis of the drum 4 such that during one revolution of the drum it moves at one step of winding the first cable portion.
  • the stacker comprises adjustable sensors of extreme positions of the carriage.
  • the stacker in accordance with the present invention has the least possible effect on the stacking and unwinding process.
  • Guide fluoroplastic sleeve of the stacker, through which the first cable portion passes, is located as close as possible to the point where the cable leaves the reel on the vertical tangent to the generatrix.
  • the cable changes its angle when touching the sleeve only in the extreme positions of the drum.
  • any suitable known rotation angle sensors mounted on the axis of the drum or in a suitable place on the winch housing can be used, for example, optical, mechanical, magnetic and other rotation angle sensors.
  • a mirrored engraved disc is mounted on the reel shaft as part of an optical encoder. Marks on the disc allow reading the position of the drum.
  • Emitter and photodetector of the encoder are mounted on the frame. Encoder signal is used to operate a servo drive, which implements smooth acceleration, deceleration, stabilization of the movement speed, approaches to a point at a given coordinate without participation of an operator in a fully automatic mode, and synchronization of winches in a set.
  • a drive consisting of a DC motor with an integrated self-locking worm gear is used to drive the winch drum.
  • This solution provides the necessary condition that the drum must be fixed all the time when it is not rotating, including when it is de-energized.
  • the drive has a friction clutch to mate with the motor.
  • the friction clutch is designed to protect the gearbox, cable and wire from external mechanical effects.
  • a typical situation occurring when winches are installed is that the space behind the ceiling is densely packed with lighting and stage equipment, and trusses, decorations, and lighting devices are suspended from the ceiling. Suspension of audio equipment, that is, the cable connector and the load, and the wire rope, when moving up and down, very often touch or even catch suspended structures.
  • Friction gear eliminates the risk of breakage or entanglement under these conditions and also makes maintenance very easy. Since the encoder is rigidly connected to the drum, rather than to the motor, slippage does not affect the coordinate reading. Adjusting nut can change the force on the friction clutch spring washer and thus change the shear force. Force is transmitted to the drum and stacker by a chain drive. To tension the chain, an additional bypass sprocket with an adjusting groove is used. It should be noted that in an alternative embodiment, any other suitable motor, such as a synchronous motor, an induction motor, etc., can be used as the actuator. Moreover, to transmit the force from the actuator to the drum, a belt drive, a gear drive, a friction drive, etc. can be used as an alternative.
  • a controller can be mounted in the housing.
  • the sensor of the drum angular position and the stacker end sensors are connected to the controller.
  • the controller comprises non-volatile memory of system settings.
  • the controller independently calculates the movement ballistics. Thereby smoothness and absence of jerking or swaying movements are provided.
  • the elements of the winch can be controlled by an external controller mounted in a remote control unit.
  • the lifting capacity of the winch for audio equipment is limited by mechanical characteristics of the signal (acoustic) cable, on which the audio equipment is suspended.
  • the audio equipment is suspended using a carrier wire rope.
  • the winch drum 4 is designed to spool and unspool the cable 7 and the carrier wire rope 8 (shown further in Figs. 7 to 9 ).
  • the drum 4 has a split structure and consists of two parts. The first cable portion and the carrier wire rope, designed to suspend the audio equipment, are spooled on the first part of the drum, and the second cable portion, which makes the signal path continuous, is spooled on the second part of the drum.
  • the first cable portion 7, together with the wire rope 8 is laid during winding on the drum coil to coil from one edge of the first part of the drum towards the other. Since radius of the carrier wire rope coil remains constant, simple one-to-one dependence of coordinates of the audio equipment suspension and the angle of rotation of the drum is achieved, thus high accuracy of positioning of the audio equipment can be provided.
  • the stacker 6 is also used to form smooth coils of the cable 7 and the carrier wire rope 8 on the drum.
  • the drive force is also transmitted to the stacker with a carriage, which moves linearly in the direction along the axis of the drum 4 such that during one revolution of the drum one step of winding the cable with the carrier wire rope is performed.
  • the cable and the carrier wire rope pass together through the hole in the carriage and are wound on the drum in one row, coil to coil.
  • the carrier wire rope and the cable are wound on the same drum together and simultaneously.
  • the wire rope of required strength usually has a noticeably smaller thickness compared to the cable, i.e. the wire rope and the cable have different diameters and, accordingly, different coil lengths on the drum. This has two consequences:
  • the straightening occurs due to the forces arising at the points of contact of the cable with elements of the drawing path, i.e. the stacker and the winch exit hole (see Fig.8 ). Arrows in Fig.8 shows direction of the support reaction forces.
  • the cable-wire rope-support system has a stable energy state, referred to as "potential energy well", at the point with minimum deviation from the shortest path of the cable and wire rope. With increasing the deviation, the arc length increases, which is equivalent to increasing the movement speed, i.e.
  • the system can "escape” from the “potential energy well”. That is, the twist (the cable and wire rope twisted state) can "slip” through the stacker. This happens if the force holding the pair (cable and wire rope) in the twisted state is, for some reason, greater than the component of the support reaction force directed to untwisting.
  • the cable close to the drum should always be tensioned, especially when the system is lowered.
  • the tension force must exceed the friction force of the cable against the stacker carriage, so that when the cable is unspooled from the drum, no loops are formed between the drum and the stacker. Own weight of the cable is not enough for this.
  • the winch is unwound, length of the wire rope and the cable changes differently. Therefore, the following measures have been taken to tension the cable and compensate for the run-on.
  • the cable has a larger diameter than the wire rope.
  • the winding radius of the cable is larger, so the cable length must be longer.
  • the carrier wire rope is tensioned by the suspended load, and it is proposed to use a resilient member, for example, a spiral spring 19 (see Fig.9 ), to tension and heave the changing excess length of the cable.
  • a resilient band for example, can be used as the resilient member.
  • the spring is fixed at one end to the audio equipment suspension point, the same where the wire rope is fixed, while the other end of the spring is attached to a clamp that can be moved along the cable. In general, the clamp is fixed in the lower section of the first cable portion.
  • one end of the spring is not fixed at the suspension point, but close to it, for example, on the wire rope or on the audio equipment itself near the suspension point.
  • the cable portion between the clamp and the audio equipment is not subject to tension and forms a loop.
  • the spring provides a slight tension on the cable above the clamp and heaves the loop that changes its size depending on the suspension height.
  • the spring can be connected to the cable with a collet clamp (for example, using a standard cable connector having a plastic collet).
  • Magnitude of the cable tension force can range from zero, when the spring is in free state, to a value of P, modulo the force of gravity, if the entire load hangs only on the spring and, therefore, on the cable.
  • selection of the tension force is done in a fully unwound state, with a load suspended from the wire rope and a detached spring.
  • Position of the collet on the cable is chosen such that the cable tension is minimal sufficient for normal operation of the winch stacker. At raising, the tension will increase and reach maximum at the highest point. This is because the length of the cable coil on the drum is greater than that of the wire rope coil. The cable rises faster.
  • One more feature of practical implementation is that when the working load is detached and the winch is wound, the weight of the remaining "tail" may not be enough for safe unwinding, so a small load can be mounted at the cable lower portion.
  • a winch for audio equipment comprising a housing that contains a drum for spooling the cable, and a carrier wire rope for suspending audio equipment, one end of the cable being intended to be connected to said audio equipment, and the other end of the cable being intended to be connected to fixed point of connection to an external signal path.
  • the stacker similar to the exemplary embodiment described above, is configured to lay the cable and the wire rope on the drum coil to coil. The drive is connected to the drum and the stacker to actuate them.
  • a resilient member is provided, one end of which is fixed at the point of suspension of the audio equipment or near it, and the other end of the resilient member is connected to a clamp mounted in the lower section of the cable, the cable portion between the clamp and the audio equipment experiences no tension.
  • the winch has a simple and reliable structure, noise immunity of the signal path, and also enables increasing the service life and accuracy of positioning the audio equipment.
  • the winch in accordance with the present invention ensures positioning of audio equipment with an accuracy of 1 mm.
  • the winch in accordance with the present invention can be used as part of a positioning system for audio equipment, consisting of several such winches and a control unit.
  • the control unit is configured to control the winches for positioning several pieces of audio equipment in certain positions above the stage in accordance with a predetermined layout. Furthermore, the control unit is configured to save multiple layouts of audio equipment above the stage so that to reproduce them in future.
  • the control unit comprises information display means (e.g. display) to display information representing possible layouts of audio equipment or other information necessary to control the system.
  • the control unit in accordance with one embodiment comprises input means, such as a keyboard, mouse, touch panel, touchpad, joystick, etc., for receiving control actions from a user to control the system.
  • control unit can be connected to a mobile terminal that performs functions of displaying information to the user and receiving control actions from the user.
  • the control unit can communicate with the mobile terminal and with the winches using both wired and wireless links. The system ensures high-precision positioning of audio equipment in accordance with a given layout in a simple and reliable manner.
  • elements/units of the present device are enclosed in a common housing; they can be arranged on the same frame/structure/printed circuit board and connected to each other structurally by assembly operations and functionally by communication lines.
  • the communication lines or channels of, unless otherwise indicated, are standard communication lines known in the art, the material implementation of which does not require creative effort.
  • Communication line can be a wire, a set of wires, a bus, a track, a wireless communication line (inductive, radio frequency, infrared, ultrasonic, etc.).
  • Communication protocols over the communication lines are known to those skilled in the art and are not specifically disclosed.
  • Functional relationship of elements should be understood as a relationship that ensures correct interaction of these elements with each other and implementation of particular functionality of the elements.
  • Specific examples of functional relationship can be a relationship enabling exchange of information, a relationship enabling transmission of electric current, a relationship enabling transmission of mechanical motion, relationship enabling transmission of light, sound, electromagnetic or mechanical vibrations, etc.
  • the specific type of functional relationship is determined by the nature of the interaction of these elements, and, unless otherwise indicated, is provided by conventional means using conventional principles.

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EP20783560.4A 2019-04-05 2020-04-06 Winde für audiogeräte und system damit Pending EP3950083A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2019110211A RU2731014C1 (ru) 2019-04-05 2019-04-05 Лебедка для звукового оборудования
RU2019110212A RU2705036C1 (ru) 2019-04-05 2019-04-05 Лебедка для звукового оборудования
PCT/RU2020/050068 WO2020204767A1 (ru) 2019-04-05 2020-04-06 Лебедка для звукового оборудования и содержащая её система

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EP3950083A1 true EP3950083A1 (de) 2022-02-09
EP3950083A4 EP3950083A4 (de) 2023-01-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2258911A1 (en) * 1974-01-24 1975-08-22 Arbed F & G Drahtwerke Method of winding or unwinding bridge cables - uses separation of cable wires to compensate vary different lengths
DE4108534A1 (de) * 1991-03-15 1992-09-17 Gore W L & Ass Gmbh Wickelvorrichtung zum auf- und abwickeln einer leitung
US5526997A (en) * 1994-06-28 1996-06-18 Xedit Corporation Reeling device
US6385493B1 (en) * 2000-07-31 2002-05-07 Production Resource Group L.L.C. Computer controlled winch assembly for stage
RU97275U1 (ru) * 2010-04-07 2010-09-10 Евгений Владимирович Кармаев Лебедка театральная беспротивовесная

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EP3950083A4 (de) 2023-01-04

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