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WO2020204767A1 - Treuil pour équipement acoustique et système le comprenant - Google Patents

Treuil pour équipement acoustique et système le comprenant Download PDF

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Publication number
WO2020204767A1
WO2020204767A1 PCT/RU2020/050068 RU2020050068W WO2020204767A1 WO 2020204767 A1 WO2020204767 A1 WO 2020204767A1 RU 2020050068 W RU2020050068 W RU 2020050068W WO 2020204767 A1 WO2020204767 A1 WO 2020204767A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
winch
coil
drum
cheeks
Prior art date
Application number
PCT/RU2020/050068
Other languages
English (en)
Russian (ru)
Inventor
Михаил Айтуганович РАППЕ
Сергей Владимирович ТИТОВ
Евгений Васильевич ВАСИЛЬЧЕНКО
Original Assignee
Общество с ограниченной ответственностью "ГЕЛЛА"
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 RU2019110212A external-priority patent/RU2705036C1/ru
Priority claimed from RU2019110211A external-priority patent/RU2731014C1/ru
Application filed by Общество с ограниченной ответственностью "ГЕЛЛА" filed Critical Общество с ограниченной ответственностью "ГЕЛЛА"
Priority to EP24209240.1A priority Critical patent/EP4477594A2/fr
Priority to EP20783560.4A priority patent/EP3950083B1/fr
Publication of WO2020204767A1 publication Critical patent/WO2020204767A1/fr

Links

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 present invention relates to lifting devices intended for lifting and lowering sound (acoustic) equipment in sound and recording systems used in concert halls, theater stages, conference rooms, studios, etc.
  • winches are installed on ceiling structures above the point where the microphone is to be fed.
  • winches with cable laying on a stationary drum using a stacker that rotates around the drum are currently on the market.
  • the hanging cable with the microphone twists, as a result of which the use of such winches is often unacceptable or severely limited.
  • a microphone winch is known, disclosed in document US 5,526,997 A.
  • the mentioned winch (Fig. 1) contains a housing in which two drums (main and secondary) are located, located on one hub, and through the said hub from the main drum to the secondary drum hole.
  • the signal cable is wound on both reels, the first part of the cable being wound on the main reel, the intermediate part of the cable passing through the hole in the hub, and the second part of the cable being wound on the secondary reel.
  • the microphone is connected to the first part of the cable.
  • the second part of the cable is shorter than the first part and includes an end that is attached to the housing to provide a permanent electrical connection to the path of the recording equipment.
  • the cable By driving the said drums in motion, the cable is wound onto the drum or the cable is unwound from the drum, thereby carrying out the vertical positioning of the microphone. Moreover, when the first part of the cable is completely unwound from the main drum, the second part of the cable is first unwound and then wound onto the secondary drum.
  • the compartment containing the second part of the cable consists of a first wall, which is fixed relative to the winch body, a second fixed wall and a movable hub.
  • the second wall is covered with a Teflon film, while the other parts are not.
  • friction occurs in this compartment in cable-cable (PVC-PVC), cable-second wall (PVC-Teflon) pairs, as well as cable-first wall and cable-hub (for example, PVC metal and / or PVC plastic depending on the material of the hub and first wall).
  • the present invention is intended to solve at least some of the above problems.
  • a winch for audio equipment in accordance with the present invention, it is proposed to make the walls of the compartment for the second part of the cable completely movable relative to the winch body, to lead the cable into it from the main part of the drum not from the center, but from the edge, to lead the cable out of the compartment for connection with external equipment, on the contrary, through the center of the compartment, and in this case, make all the inner surfaces of the compartment sliding relative to each other.
  • a winch for audio equipment comprising a cable and a housing, which houses:
  • the first part of the drum is intended for winding the first part of the cable
  • the second part of the drum is intended for winding the second part of the cable and is made in the form of a compartment containing a coil having a neck located on the central sleeve for winding the second part of the cable and two cheeks, one cheek separating the coil from the first part of the drum, and between the cheeks of the coil there is an outer circular a wall with a diameter greater than the diameter of the coil neck,
  • one end of the first part of the cable is intended to be connected to the suspended audio equipment, and the second end of the first part of the cable is fixed on the first part of the drum and connected to the second part of the cable,
  • one end of the second part of the cable is connected to the first part of the cable and is inserted into the coil, being fixed in the region of its circular wall, and the second end of the second part of the cable is removed from the coil, being fixed in the region of the neck of the coil, and is intended to be connected to an external signal path;
  • a drive connected to the drum and configured to drive it
  • the cable inside the coil is coated to allow the cable to slide relative to adjacent turns and relative to the sliding material covering the cheeks of the coil.
  • the audio equipment is one of a microphone and a speaker.
  • the cheeks, neck and circumferential wall of the coil serve as walls of said compartment.
  • At least one of the cheeks, neck or circumferential wall of the coil is separated from the corresponding wall of the said compartment.
  • the circular wall and / or the neck of the coil is made in the form of a series of connecting elements connecting the cheeks of the coil and located along a circular line with the center in the axis of the coil, and the distance between the connecting elements is selected so as to prevent the cable from protruding from the coil.
  • the circumferential wall and / or the neck of the coil is a solid wall located along a circular line centered on the axis of the coil.
  • the distance between the circumferential wall and the neck of the coil is at least three times the number of turns of the coil in a fully wound state.
  • the sliding material is a sliding gasket applied to the inner surface of the coil cheeks, the total gap between the cable and the grommets being less than 1 diameter of the second part of the cable.
  • the spacers are made in the form of lavsan or polyethylene terephthalate films.
  • the sliding material is a coating applied to the inner surface of the coil cheeks, the total gap between the cable and said coating being less than 1 diameter of the second part of the cable.
  • the sliding material is grease, with the total clearance between the cable and the reel cheeks being less than 1 the diameter of the second cable portion.
  • the coating of the cable inside the coil is a grease.
  • the coating of the cable inside the coil is a semi-synthetic grease containing EP additives and a solid filler.
  • the sheath of the second cable portion is sliding.
  • the second cable portion and the first cable portion are made of different types of cables.
  • the second cable part and the first cable part are formed from the same type of cable as a unit.
  • the second part of the cable is a balanced cable with quadruple conductors in a 2 * 2 structure.
  • the second part of the cable is in the form of a filament or fiber filler cable.
  • the second part of the cable is made in the form of a cable having a tinned copper braided shield with a coverage of at least 95%.
  • the second part of the cable is in the form of a XLPE insulated cable.
  • the second cable portion is an annealed copper stranded cable with a wire diameter of less than 0.1 mm.
  • the technical result provided by the present invention is to increase the versatility, reliability and service life of the winch.
  • FIG. 1 shows a winch known from the prior art.
  • FIG. 2 shows a general view of a winch in accordance with the present invention.
  • FIG. 3 is a side view of a winch drum in accordance with the present invention.
  • FIG. 4 shows another view of the winch drum.
  • FIG. 5 schematically depicts a coil with laid turns of the second part of the cable.
  • FIG. 6 schematically shows the process of rewinding the coil from one extreme position to another extreme position.
  • Fig. 7 schematically depicts a part of a drum with laid coils of cable and cable.
  • FIG. 8 schematically depicts the reaction forces of the support arising at the points of contact of the cable and cable with the elements of the broach path.
  • FIG. 9 schematically depicts audio equipment suspended on a carrier cable with a cable connected to it.
  • a winch in accordance with the present invention is intended for remotely controlled lifting and lowering of audio equipment.
  • sound equipment can be used, for example, microphones for recording sound during concerts, loudspeakers to create the necessary acoustic stage during performances and any other suitable equipment.
  • the winch is installed over the point at which the sound equipment must be positioned, and the installation site can be either a fixed base, such as ceiling structures, technical decks or grates, or a movable base, for example, soffits.
  • the winch contains a housing 1, consisting of a metal frame 2 with metal (for example, aluminum) panels fixed on it 3. At least some of the mentioned housing panels are removable to allow for maintenance, commissioning, adjustment, etc. .d.
  • both the frame and body panels can be made of other materials that provide the required mechanical and strength characteristics, for example, plastics, metal-plastic composite materials, etc.
  • All the main mechanical units of the winch are located in the mentioned body - drum 4, drive 5, stacker 6.
  • the sound equipment is suspended on the cable 7 or, if necessary, on the supporting cable 8 (shown further in Fig. 3).
  • the drum 4 of the winch is intended for winding and unwinding the cable 7.
  • the carrier cable 8 can also be wound on the drum.
  • Said drum 4 has a modular structure and consists of two parts. In the first part 10 of the drum, the first part 7 of the cable is wound, in the second part 11 of the drum, the second part 9 of the cable is wound, allowing the signal path to be continuous.
  • a baffle 13 (optional, see Fig. 4) separates the first drum part 10 from the second drum part 11.
  • the first part 7 of the cable during winding is laid on the drum turn to turn from one edge of the first part of the drum to the other.
  • One end of the first part 7 of the cable is intended for connection to suspended audio equipment, for which a connector and / or a fastening element can be located on it, and the second end of the first part 7 of the cable is fixed on the first part 10 of the drum and connected to the second part 9 of the cable.
  • the second part 11 of the drum is intended for winding the second part 9 of the cable and is made in the form of a compartment containing a reel 15 containing two flat cheeks (or, in other words, a stopper, sidewalls) 16 and 17 and a neck located on the central bushing 14 of the drum (or, otherwise in words, the base) 18, on which the second part 9 of the cable is wound.
  • the neck of the reel can have either a cylindrical shape or any other suitable shape - for example, a cylinder with a V-shaped recess for the cable outlet, which has rounded edges. Due to the location on the central sleeve 14 of the drum, the reel 15 rotates simultaneously with the first part 10 of the drum.
  • One of the cheeks of the spool (16) separates it from the first part 10 of the drum.
  • the cheeks 16 and 17 of the coil are interconnected by an outer circular wall 19, the diameter of which is greater than the diameter of the neck 18 of the coil.
  • One end of the second part 9 of the cable is connected to the first part 7 of the cable, is fixed in the region of the circular wall 19 of the coil and is inserted inside the coil either through the circular wall 19 or next to it through one of the cheeks (for example, Fig. 3 schematically shows that the second part 9 of the cable is inserted into the coil through the cheek 16 near the circular wall 19).
  • the second end of the second part 9 of the cable is fixed in the area of the neck of the coil and is led out of the coil, for example, through a hole in the neck of the coil or in the cheek next to the neck, or through the aforementioned V-shaped notch in the neck for the cable outlet.
  • the brought out end of the second part 9 of the cable is intended for connection to an external signal path, for which a connector and / or a fastening element can be located on it.
  • the second part of the cable fits into the cavity between the cheeks, neck and circumferential wall of the coil, as shown in FIG. five.
  • FIG. 6 The process of rewinding the second part of the cable from one extreme position to another extreme position is shown in FIG. 6.
  • the central bushing is stationary, and the compartment (coil) rotates.
  • the fixed end of the second part of the cable is led out through the central bushing, equipped with limiters for the minimum radius.
  • Said fixed end of the second part of the cable is intended for connection to an external signal path connected to external audio equipment.
  • the connection point of the second part of the cable to the external signal path can be fixed to the winch body.
  • the movable end of the second part of the cable is led out of the reel through the circular wall or cheek into the first part of the drum, where the first part of the cable is connected to it.
  • the movable end of the second part of the cable rotates together with the drum around the central sleeve, thereby pulling the rest of the second part of the cable laid in the reel.
  • the tension and the range of bending angles of the cable in the region of the moving end are small and relatively constant, and there is practically no twisting. In this case, the remaining parts of the second part of the cable experience uniform small bends and straightenings with a slight tension. All parts of the coil move simultaneously together, which reduces the negative impact on the cable.
  • the second part of the cable changes the winding direction.
  • the tension and the range of bending angles of the cable in the region of the fixed end are small, and there is practically no twisting.
  • the second cable section contains 10 cable turns, which allows the reel to rotate 20 turns between the extreme positions in which the second cable section is tightened to the stop.
  • the inner surface of the coil cheeks is covered with a sliding material, and the cable inside the coil has a coating that allows the cable to slide both relative to adjacent turns and relative to the sliding material covering the coil cheeks.
  • the gap between the coil cheeks and the cable should be small to prevent the cable from sinking into it.
  • the structure proposed in accordance with 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, which gives an increased noise immunity of the said signal path.
  • the cable in such a design is subject to lower loads, which further increases its wear resistance and noise immunity, and also allows the use of a winch with such a design to work in any winding ranges and use the same winch in different stage configurations. This provides increased winch versatility, reliability and service life.
  • the cheeks, neck and circumferential wall of the coil serve as the compartment walls for the second portion 11 drum, that is, the coil, in fact, is a compartment.
  • the jaw 16 can serve as a partition 13. This ensures a compact design.
  • the compartment for the second drum part 11 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 cheeks, neck or circular wall of the reel is separated from the corresponding wall of the said compartment. This can allow the introduction of additional protection measures for the second part of the drum, such as additional shielding, preventing damage to the cable and falling out of the contents of the second part of the drum into the cavity of the housing 1.
  • Each loop formed during the reversal of the drum rotation has a size of about 3-4 cable diameters and increases the radius of the coil winding. In unfavorable circumstances, there may be little space for the coil and the mechanical stress on the cable increases. In these conditions, it is important to ensure that there are no "pockets" in the coil where the turns can be squeezed out.
  • a cylindrical coil is best for this. To do this, its circular wall and neck should be located along the line of the circle (or near it) with the center in the axis of the coil.
  • this can be achieved, for example, by making the circular wall and / or the neck of the coil in the form of a series of connecting elements connecting the cheeks of the coil and located along the line of a circle with the center in the axis of the coil, and the distance between the connecting elements should be chosen so as to exclude protrusion cable from the coil (for example, it should be less than 2-3 cable diameters).
  • Such connecting elements can be, for example, metal studs 12 for screwing, as shown in FIG. 4 and 5, bolts, as well as elements of any other shape, size, material and method, connections, suitable for a particular application. This option can provide structural rigidity, reduced weight and material consumption, as well as increased accuracy in setting the distance between the coil cheeks. to ensure a uniform specified load on the cable in all parts of the reel, and thereby increase reliability.
  • the circular wall and / or the neck of the coil is made in the form of a solid wall located along the line of the circle with the center in the axis of the coil.
  • a solid wall can be either independent and made of a solid 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 contents of the coil falling out or protruding outward, thereby increasing reliability.
  • polymer spacers made of a highly sliding material (for example, lavsan or polyethylene terephthalate, i.e. Teflon) can be used.
  • the total gap between the cable and the gaskets should be less than 1 diameter of the second part of the cable.
  • the sliding material covering the coil cheeks can be another hard or soft coating applied to the inner surface of the coil cheeks, for example, by spraying, gluing, electroplating, etc., and having suitable sliding properties relative to the cable coating.
  • the total gap between the cable and the mentioned coating is less than 1 diameter of the second part of the cable.
  • the sliding material covering the cheeks of the reel can be grease, and then the total gap between the cable and the cheeks of the coil should be less than 1 diameter of the second part of the cable.
  • the cable inside the coil may be coated with grease.
  • the cable can be achieved by coating it with a grease such as drill grease.
  • the grease should have good adhesion to plastics and low droplet formation in the operating temperature range, have a consistency of 2-3 according to the NGLI classification and passivity towards PVC. This is satisfied, for example, by EP greases of KPF2 / 3-K30 according to DIN 51825 on a semi-synthetic basis, containing EP additives (i.e.
  • additives for reducing friction and wear in the zone of increased friction and / or for increasing the permissible load and a solid filler (F) including, for example, molybdenum disulfide.
  • F solid filler
  • This combination best protects the PVC cable from stress and provides the winch with the previously mentioned advantages.
  • the EP designation indicates the ability to work at elevated pressure and is not required, but the additives that give this property to the lubricant have a beneficial effect at low pressures, so this option provides the cable with additional reliability.
  • the coil (or, in particular, the cheeks of the coil) is made of PVC (or covered with a PVC material), and the second part of the cable has a PVC sheath, then only friction in the PVC-PVC vapor will occur in the cavity of the coil, and then it is enough to cover the cable and cheeks with a grease that improves glide in this pair. This simplifies coil assembly while retaining all of the previously mentioned advantages.
  • a cable can be selected that does not have a PVC sheath, but a different, sliding sheath, or coated sliding shell.
  • grease may not be necessary if the cable sheath provides acceptable sliding characteristics in cable-cable and cable-reel pairs. It also simplifies coil assembly while retaining all of the previously mentioned benefits.
  • Said external signal path to which the fixed end of the second part of the cable is connected, and external audio equipment, may have a different character.
  • 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 sound recording equipment.
  • the suspended audio equipment is a loudspeaker
  • the external signal path is the input signal path for the winch and may be connected to, for example, a turntable, mixer, etc.
  • the cable can be made as a composite, i.e. the second part of the cable and the first part of the cable are made of different types of cables, and one-piece, i.e. the second part of the cable and the first part of the cable 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 parts of the cable is rigid, immovable and reliable. This increases the versatility of the winch while maintaining all other benefits.
  • the following types of cables can be used as the second cable portion in the embodiments of the present invention.
  • Quad conductors are used to reduce the characteristic impedance of a cable and have a significant advantage over conventional microphone pairs.
  • An additional advantage of the quadruples is the perfectly round shape of the cable, due to which there are no situations when the twisted cable becomes flat, the gap between the cable and the walls increases, and the loop falls through and is clamped into it.
  • Cable with filament or fiber fillers In the spool, the cable is periodically subjected to strong compression and tension. Loops, “hernias”, etc. may appear inside the cable after strong stretching. defects. Strength, tensile strength and shape stability of the cable can be ensured by using fillers made of textile (cotton) threads and lavsan fibers. A cable with this filling will not be flattened or pulled out.
  • Cross Linked PE Insulation cable has little intrinsic microphone effect. This material provides additional advantages: high flexibility, reduced linear capacitance, high resistance to electrical voltage. 6.
  • the cable with stranded conductors made of annealed copper has the necessary flexibility due to the large number (30-40) of very thin conductors with a diameter of less than 0.1 mm.
  • a stacker b can be used.
  • the force from the drive is also transmitted to the stacker with a carriage, which moves linearly in the direction along the axis of the drum 4 in such a way that for one revolution of the drum it moves one step of winding the first part of the cable.
  • the cable passes through the hole in the carriage and is wound on the drum in one row of turns to turn.
  • the stacker has adjustable carriage end position sensors.
  • the stacker in accordance with the present invention has the least possible impact on the stacking and unwinding process.
  • the guide fluoroplastic bushing of the stacker, through which the first part of the cable passes, is located as close as possible to the point where the cable leaves the drum on the vertical tangent to the generatrix.
  • the cable changes its angle when the sleeve touches only in the extreme positions of the drum.
  • any suitable known rotation angle sensors installed on the axis of the drum or in a suitable place on the winch body can be used, for example, optical, mechanical, magnetic and other rotation angle sensors.
  • a mirrored engraved disc is mounted on the drum shaft as part of an optical encoder. The dashes on the disc allow the drum position to be read.
  • the emitter and photodetector of the encoder are installed on the frame. The encoder signal is used to operate the servo drive, which allows you to implement smooth acceleration, deceleration, stabilization of the movement speed, approaches to the point at a given coordinate without operator participation in fully automatic mode, as well as synchronization of winches in a group.
  • 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 spinning, including when it is de-energized.
  • the drive has a friction clutch for mating with the motor.
  • the clutch is designed to protect the gearbox, cable and cable from external mechanical influences.
  • a typical situation is when installing winches, when the space behind the ceiling is densely packed with lighting and stage equipment, trusses, decorations, lighting devices are suspended from the ceiling.
  • the suspension of audio equipment that is, the cable connector and weighting material, and the cable, when moving up and down, very often touch or even catch on suspended structures.
  • the friction gear eliminates the risk of breakage or entanglement in these conditions and also makes maintenance very easy. Since the encoder is rigidly connected to the drum and not to the motor, slippage does not affect the coordinate readout.
  • the adjusting nut can change the force on the clutch spring washer and thus change the shear force.
  • Power transmission to the drum and stacker is carried out by a chain drive. To tension the chain, an additional bypass sprocket with an adjusting groove is used.
  • any other suitable motor such as a synchronous motor, an induction motor, etc., can be used as the driving source. In this case, a belt drive, a gear drive, a friction drive, etc. can alternatively be used to transfer the force from the driving source to the drum.
  • a controller can be installed in the housing to control the elements of the winch.
  • a drum angular position sensor and stacker end sensors are connected to it. Mentioned the controller contains a non-volatile memory of system settings. The controller independently calculates the ballistics of the movement. This achieves smoothness and no jerking or swaying.
  • the elements of the winch can be controlled by an external controller installed in the remote control unit.
  • the lifting capacity of the winch for audio equipment is limited by the mechanical characteristics of the signal (acoustic) cable, on which the said audio equipment is suspended.
  • the audio equipment is suspended from a carrier cable.
  • the winch drum 4 is designed to wind and unwind the cable 7 and the carrier cable 8 (shown further in FIGS. 7-9).
  • Said drum 4 has a modular structure and consists of two parts. The first part of the cable is wound on the first part of the drum and the carrier cable is designed to suspend the sound equipment; the second part of the cable is wound on the second part of the drum, which makes the signal path unbreakable.
  • the first part of the cable 7, together with the cable 8, during winding is laid on the drum turn to turn from one edge of the first part of the drum to the other. Since the radius of the loop of the carrying cable remains constant, an unambiguous and simple dependence of the coordinates of the suspension of the sound equipment and the angle of rotation of the drum is achieved, which allows for high positioning accuracy of the sound equipment.
  • the stacker b is also used to form even turns of cable 7 and the support cable 8 on the drum.
  • the force from the drive is also transmitted to the stacker with a carriage, which makes a linear movement in the direction along the axis of the drum 4 so that for one revolution of the drum it moves one step of winding the cable with a cable.
  • the cable and the carrying cable together pass through the hole in the carriage and are wound on the drum in one row, turn to turn.
  • the carrier cable and the cable are wound on the same drum together and simultaneously.
  • the cable of the required strength is usually noticeably thinner than the cable, i.e. the rope and cable have different diameters and, accordingly, different lengths of the coil on the drum. This has two consequences:
  • the cable on the drum is placed in the gaps formed by adjacent turns of the cable, practically taking up no space (see Fig. 7). In this case, laying the cable on the drum can be tight, almost the same as without the cable. This is important to maintain the capacity of the drum. It should be noted that a conventional steel cable twists under load. Since during lifting and lowering, the linear (that is, reduced to a unit of length) load changes, then the twisting force also changes. Therefore, the load can rotate on the cable and the cable is twisted into the cable.
  • Fig. 7 schematically depicts a part of a drum with laid turns of a cable and a cable, where rd is the radius of the drum, rl is the radius of the turn of the cable having a diameter dl, r2 is the radius of the turn of the cable, dl d2
  • the straightening occurs due to the forces arising at the points of contact of the cable with the elements of the broach path, that is, with the stacker and the exit window of the winch (see Fig. 8).
  • the arrows in FIG. 8 shows the direction of the support reaction forces.
  • the cable-cable-support system has a stable energy state, the so-called "potential pit", at a point with a minimum deviation from the shortest path of the cable and cable.
  • the cable For even and accurate laying, the cable must always be taut near the drum, especially when lowering the system.
  • the tension force must exceed the friction force of the cable against the stacker carriage, so that when the cable is unwound from the drum, no loops are formed between the drum and the stacker.
  • the cable's own weight is not enough for this.
  • the winch is unwound, the length of the rope and cable changes in different ways. Therefore, the following measures were taken to tension the cable and compensate for the run.
  • the cable has a larger diameter than the wire rope.
  • the radius of the winding of the cable is larger, so the length must be longer.
  • the supporting cable is tensioned by a suspended load, and it is proposed to use an elastic element, for example, a spiral spring 19 (see Fig.
  • an elastic band can be used as the elastic element.
  • the spring is fixed at one end at the suspension point of the audio equipment, at the same where the cable is fixed, and the other end of the spring is attached to a clamp that can be moved along the cable.
  • the clamp is fixed in the lower section of the first part of the cable.
  • one end of the spring is not fixed at the suspension point, but close to it, for example on a cable or on the sound equipment itself, near the suspension point.
  • the part of the cable between the said clamp and the audio equipment is free of tension and forms a loop.
  • the spring provides a slight tension to the cable above the clamp and selects a loop that changes in size depending on the height of the suspension. Connecting the spring to the cable can be done with a collet clamp (for example, using a standard cable connector that has a plastic collet).
  • ⁇ is the force of gravity acting on the suspended load
  • Fr is the cable tension force
  • kX is the cable tension force, equal in modulus to the spring traction force.
  • the magnitude of the cable pulling force can range from zero, when the spring is in a free state, to a value of P, modulo equal to the force of gravity, in the event that the entire load hangs only on the spring and therefore on the cable.
  • P modulo equal to the force of gravity
  • the selection of the tension force occurs in a fully uncoiled state, with a load suspended from a cable and a detached spring.
  • the position of the collet clamp on the cable is selected in such a way that the cable tension is minimal sufficient for normal winch stacker work. As you climb, the tension will increase and reach a maximum at the top. This is because the length of the cable turn on the drum is greater than the length of the cable turn. The cable rises faster.
  • a winch for audio equipment comprising a housing containing a reel for winding a cable and a carrier cable for suspending audio equipment, one end of the cable for connecting to said audio equipment, the other end of the cable for connecting to fixed point of connection to the external signal path.
  • the stacker similar to the above-described exemplary embodiment, is configured to lay a cable and cable on a roll-to-roll drum. The drive is connected to the drum and the stacker with the possibility of activating them.
  • an elastic element is provided, one end of which is fixed at the point of suspension of the sound equipment or near it, and the other end of the elastic element is connected to a clamp installed in the lower fragment of the cable, and part of the cable between the said clamp and the sound equipment does not experience tension.
  • Such a winch has a simple and reliable design, noise immunity of the signal path, and also allows provide improved winch life and positioning accuracy of audio equipment.
  • the winch in accordance with the present invention allows 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 above-mentioned winches for positioning several pieces of sound equipment in certain positions above the stage in accordance with a predetermined layout.
  • the control unit is configured to save a plurality of arrangements of the location of the sound equipment above the stage for the purpose of their subsequent reproduction.
  • Said control unit in accordance with one of the embodiments comprises information display means (for example, a display) for displaying information representing possible layouts of audio equipment or other information necessary to control said system.
  • control unit in accordance with one of the embodiments comprises input means, such as a keyboard, mouse, touch panel, touchpad, joystick, etc., for receiving control input from a user to control said system.
  • control unit can be associated with a mobile terminal that performs the 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 communication technologies.
  • the elements / blocks of the proposed device are in a common housing, can be placed on the same frame / structure / printed circuit board and are structurally connected to each other by means of assembly (assembly) operations and functionally by means of communication lines.
  • the said lines or channels of communication are standard communication lines known to specialists, the material implementation of which does not require creative efforts.
  • the 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 communication lines are known to those skilled in the art and are not specifically disclosed.
  • the functional connection of elements should be understood as a connection that ensures the correct interaction of these elements with each other and the implementation of one or another functionality of the elements.
  • Private examples of functional communication can be communication with the ability to exchange information, communication with the ability to transfer electric current, communication with the possibility of transmitting mechanical movement, communication with the possibility of transmitting 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 widely known means using principles widely known in the art.
  • the design of the elements of the proposed device is known to specialists in this field of technology and is not described separately in this document, unless otherwise indicated.
  • the elements of the device can be made of any suitable material. These component parts can be manufactured using known methods, including, by way of example only, machining, investment casting, crystal growth. Assembly, joining, and other operations in accordance with the above description also correspond to the knowledge of a person skilled in the art and, therefore, will not be explained in more detail here.

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  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

La présente invention se rapporte au domaine des dispositifs de levage servant à relever et faire descendre un équipement acoustique. Le treuil pour équipement acoustique comprend un câble et un corps dans lequel sont disposés un actionneur et un tambour; la première partie du tambour sert à enrouler une première partie de câble, la seconde partie du tambour sert à enrouler une seconde partie de câble et se présente sous forme d'une bobine avec un rétrécissement situé sur l'insert central afin d'enrouler la seconde partie de câble, et deux joues. Entre les joues de la bobine se trouve une paroi circulaire externe dont le diamètre est supérieur au diamètre du rétrécissement de la bobine; une extrémité de la première partie du câble vient se connecter à l'instrument acoustique suspendu, et la seconde extrémité de la première partie du câble est fixée sur la première partie du tambour et est reliée à la seconde partie du câble. Une extrémité de la seconde partie du câble est connectée à la première partie du câble et est introduite dans la bobine en étant fixée dans la zone de sa paroi circulaire, et la seconde extrémité de la seconde partie du câble est extraite de la bobine en étant fixée dans la zone du rétrécissement de la bobine et vient se connecter à une piste de signaux externe.
PCT/RU2020/050068 2019-04-05 2020-04-06 Treuil pour équipement acoustique et système le comprenant WO2020204767A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP24209240.1A EP4477594A2 (fr) 2019-04-05 2020-04-06 Treuil pour équipement audio et système le contenant
EP20783560.4A EP3950083B1 (fr) 2019-04-05 2020-04-06 Treuil pour équipement acoustique et système le comprenant

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2019110212A RU2705036C1 (ru) 2019-04-05 2019-04-05 Лебедка для звукового оборудования
RU2019110211A RU2731014C1 (ru) 2019-04-05 2019-04-05 Лебедка для звукового оборудования
RU2019110211 2019-04-05
RU2019110212 2019-04-05

Publications (1)

Publication Number Publication Date
WO2020204767A1 true WO2020204767A1 (fr) 2020-10-08

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EP (2) EP3950083B1 (fr)
WO (1) WO2020204767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2826086C1 (ru) * 2023-12-23 2024-09-03 Общество с ограниченной ответственностью "ГЕЛЛА" Устройство и способ поворота прибора, подвешенного на кабеле, система позиционирования прибора и система позиционирования комплекта приборов

Citations (4)

* 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
US5526997A (en) 1994-06-28 1996-06-18 Xedit Corporation Reeling device
CA2414854A1 (fr) * 2000-07-31 2002-02-07 Production Resource Group Inc. Ensemble de treuils commande par ordinateur destine a une scene
RU97275U1 (ru) * 2010-04-07 2010-09-10 Евгений Владимирович Кармаев Лебедка театральная беспротивовесная

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108534A1 (de) * 1991-03-15 1992-09-17 Gore W L & Ass Gmbh Wickelvorrichtung zum auf- und abwickeln einer leitung

Patent Citations (4)

* 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
US5526997A (en) 1994-06-28 1996-06-18 Xedit Corporation Reeling device
CA2414854A1 (fr) * 2000-07-31 2002-02-07 Production Resource Group Inc. Ensemble de treuils commande par ordinateur destine a une scene
RU97275U1 (ru) * 2010-04-07 2010-09-10 Евгений Владимирович Кармаев Лебедка театральная беспротивовесная

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3950083A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2826086C1 (ru) * 2023-12-23 2024-09-03 Общество с ограниченной ответственностью "ГЕЛЛА" Устройство и способ поворота прибора, подвешенного на кабеле, система позиционирования прибора и система позиционирования комплекта приборов

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EP3950083A4 (fr) 2023-01-04
EP3950083A1 (fr) 2022-02-09
EP4477594A2 (fr) 2024-12-18
EP3950083B1 (fr) 2025-03-12

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