Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/005—Damping of vibrations; Means for reducing wind-induced forces
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/12—Supports; Mounting means
  • H01Q1/1242—Rigid masts specially adapted for supporting an aerial
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/12—Supports; Mounting means
  • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
  • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
  • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
  • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations

Definitions

• the present invention relates to the field of radio broadcasting equipment.
• Such equipment is deployed in the field for remote transmissions, both in terms of telecommunications, such as antennas intended for the GSM system.
• Telescopic masts are known in particular, the essential merit of which is to allow a structure which gradually becomes lighter in height while retaining optimum resistance to wind.
• French patent FR2745423 describes an antenna support comprising two parallel fasteners articulated close to one another by one end at the base of a rigid support, and fixed to a vertical mast for form a deformable quadrilateral in the vertical plane to adjust the tilt of the antenna.
• PCT patent WO9858420 relates to a cell site mast assembly, which is integrated with different antennas and components so that the assembly is easy to install on a cell site without the need for extensive wiring or the like.
• the set also includes a light fiberglass housing, which surrounds the antenna without disturbing its operation.
• the assembly has a balancing system intended to raise or lower the housing so as to access the antenna.
• PCT patent W09966589 describes an antenna configuration intended to be used in particular with a cell phone system and in a rural environment.
• This antenna device comprises a hollow steel support column covered with a hollow sheath made of plastic reinforced with glass fibers, for example.
• the support column and the sheath are designed so as to have an external appearance simulating the bark of a tree, such as a Scots pine.
• the column is bolted to a concrete base placed below ground level, and has a cover simulating the roots of the tree.
• the sheath carries and encloses a omnidirectional antenna connected to a feed line passing through the column and through a pipe located inside the concrete base.
• the equipment compartment of a cell phone system base station is connected to the antenna power line.
• the value of the depointing should not exceed 1 or even 20 ', in case of strong wind.
• the present invention therefore aims to remedy the drawbacks mentioned.
• the present invention thus relates to the production of a high-performance antenna support pylon, with reduced acquisition and operating costs, contributing to better environmental management and greater convenience and quality for users.
• the invention relates, in its most general sense, to a radio broadcasting device consisting of a pylon, the upper part of which supports at least one antenna connected to electronic equipment comprising an HF amplifier, characterized in that said electronic equipment is disposed in the upper part. of the pylon.
• the electronic equipment is enclosed in a profiled housing secured to the pylon.
• said electronic equipment is powered by photovoltaic cells arranged in the upper part of the device.
• the device comprises at its upper part a rotating inertial mass producing gyroscopic stabilization.
• the invention also relates to a pylon for a radio broadcast device according to one of the preceding claims at least characterized in that it is constituted by at least one flexible central rod having at its upper part a head arranged in a plane substantially perpendicular to said rod, said rod being provided with articulated transverse spars, the pylon further comprising non-extensible means for connecting the head, said spars and the base of the pylon to form deformable parallelepiped modules, substantially preserving the parallelism of the shots of spars, head and plinth.
• the connecting means consist of at least two inextensible stays arranged on either side of the rod, fixed at one end at the base of the pylon, at the other end at the head, to form a deformable parallelogram keeping the head in a substantially constant plane.
• the shrouds are integral with each of the spars, to form cells whose bases and tops are maintained in parallel planes.
• the spars are connected to the rod by a recessed joint along the axis of the rod, and free in at least one transverse direction and in pivoting with respect to at least one transverse axis.
• the spars consist of substantially planar elements, and in that the connecting means comprise 3 guy lines.
• the spars consist of substantially planar elements, and in that the connecting means a plurality of flexible rods.
• the head has a faired part which can be oriented along a vertical axis.
• the head is mounted free to rotate and has aerodynamic drive means to create gyroscopic stabilization.
• the rod is constituted by a plurality of built-in elements.
• the invention also relates to a method for installing a pylon comprising a conical lower element characterized in that the conical element is installed, that the upper end of said conical element is fitted with a winch, and that the crown element is hoisted to a height allowing the lower element to be fitted, and so continued up to the segment intended to be fitted into the lower conical element.
• Figure 1 is a diagram of a conventional antenna in deformation, where we see the depointing characterized by an angle w;
• Figure 2 is a diagram of the deformation of a vertical parallelogram contained in a plane
• Figure 3 is a profile diagram of the support pylon, according to the invention, shown in deformation;
• Figure 4 is a view of a stage of the tensioner or deformable star;
• FIG. 5 represents the monobloc upper star supporting the antennas
• FIG. 6 represents a preferred articulation by cardan
• FIG. 7 shows another embodiment.
• a flexible support pylon is formed according to the following methods:
• the central main body consists of the pylon itself, either in the form of a conventional trellis, or in tubular sections or, for more dimensions reduced, in single tube (monotube).
• the sections are portions of telescopic nested cones.
• a base - for example circular or more simply square - is either bolted to a solidly established structure, or directly embedded or buried.
• the three-pointed star which serves as a tensioner, is made up of horizontal arms (the connecting rods) articulated, each along a horizontal axis tangent to a concentric circle with the central support.
• These rigid arms are made in a single piece or in a three-dimensional structure of the lattice type.
• the successive arms are vertically coplanar, so that only three vertical planes competing at 120 ° C are sufficient to contain all the planes of symmetry of the upper and intermediate branches (Fig. 3), (Fig. 4).
• the articulation of the upper star in the preferred option is arranged as follows: the lower cradle of the connecting gimbal is secured to the end of the support pylon and simultaneously blocks in rotation.
• the upper cradle is itself integral with the support of the broadcasting and reception antennas, whatever the shape of this antenna support, and is also locked in rotation thereby, the gimbal does not rotate in the same way as a movement transmission element between shafts.
• the possible movements for the gimbal are only those of pivoting around the axes of the horizontal spider (Fig. 5).
• a mechanically equivalent system is that of a ball joint whose end piece would coincide with the axis of the end of the support pylon.
• pylons-supports include a shelter (called in English shelter), usually used for the apparatuses, two possibilities are offered direct installation on the body of the pylon or solidly with the antenna support-cage so that cfe shelter can also maintain its horizontal orientation in all flexion conditions.
• One possibility tending to reduce the drag of the assembly is that providing for positioning the shelter in a significantly lower position, without however being such that the apparatus can be exposed to vandalism.
• Guying in the preferential option, the invention allows the removal of guy lines. However, even if in certain cases it was necessary to provide shrouds - for example for reasons of insufficient security of the foundations, or desired limitation of bending - the invention makes it possible to limit the importance thereof, and to reduce the surface covered on the ground, as well as the number of attachment points.
• the points of attachment to the pylon could be limited to a lower level, instead of being distributed over the entire height.
• a simple design of the central body is that in two or three superposed sections, bolted to each other by means of external flanges. Even more simply, a one-piece body can be designed when the transport conditions are not too unfavorable or unacceptable. It should also be noted that the preferred arrangement of the invention allowing the internal passage of the cables increases the shielding of the latter.
• the invention is naturally conceivable in several variants, depending in particular on materials, environmental conditions, aesthetics,., .Etc.
• a probably advantageous design allowed by the invention is that already mentioned consisting of a central body arranged in several frustoconical telescopic sections, of which a particularly simple and interesting arrangement is that consisting of a robust assembly by flanges or, for a given junction: flange attached to the outside of the lower part of the upper section, and flange attached to the inside of the lower tube in its upper part.
• Another variant relates to a device having a lower lattice part, surmounted by a frustoconical upper part made of an envelope such as a tube.
• the first consists of an articulated cone, a kind of planar ring arranged on concurrent inclined feet, and the second in a similar elastic ball joint in its form certain joysticks or "joysticks" in English.
• FIG. 6 shows an alternative embodiment.
• the device comprises a supporting rod having a lower section (100) formed by a conical wire mesh extended by a plurality of section (101 to 104) nested one inside the other.
• the rod supports at its upper end a head (105) articulated in pivoting and in transverse displacement.
• Guy lines (110, 111) ensure the parallelism of the head (105) with the base of the device, and the maintenance of the head in a substantially constant plane, even when the rod bent under the action of the wind.
• Spars (120 to 123) are articulated relative to the stem and form with the shrouds deformable cells, retaining the parallelism of the spars.
• the upper part has several platforms (130, 131) held parallel by the shrouds (110, 111) and articulated in pivoting and transverse displacement like the spars. These platforms allow the antennas (132) to be placed.
• the rod also supports a housing (140) containing the electronic equipment. This avoids line losses caused by the cables connecting the antennas to electronic equipment usually placed at the base of the pylon.
• This case has a double skin to improve heat exchange.
• the assembly is done by first installing the conical lattice structure (100). A winch is then installed at the upper end of this structure (100).
• the upper section (103) equipped with the head is then hoisted, using the winch, until its base reaches a height allowing it to fit into the lower section (102). This operation is repeated by hoisting the newly introduced section with the winch to place the next section, and so on until the rod is raised.
• the shrouds are fixed on the head at the start of the operation, and serve as a shroud in the provisional phase and are then subjected to a slight constraint to balance the rod.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Support Of Aerials (AREA)
• Radio Relay Systems (AREA)
• Transmitters (AREA)
• Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
• Details Of Aerials (AREA)
• Aerials With Secondary Devices (AREA)
• Telephone Function (AREA)
• Structure Of Receivers (AREA)

Priority Applications (1)

Applications Claiming Priority (5)

Related Child Applications (1)

Publications (1)

Family

ID=32327930

Family Applications (1)

Country Status (10)

Families Citing this family (9)

Family Cites Families (11)

• 2001
  • 2001-03-07 BR BR0109089-5A patent/BR0109089A/pt not_active IP Right Cessation
  • 2001-03-07 DE DE60115507T patent/DE60115507D1/de not_active Expired - Lifetime
  • 2001-03-07 AT AT03292470T patent/ATE311671T1/de not_active IP Right Cessation
  • 2001-03-07 CA CA002402256A patent/CA2402256A1/fr not_active Abandoned
  • 2001-03-07 AU AU39357/01A patent/AU3935701A/en not_active Abandoned
  • 2001-03-07 CN CN01809106.7A patent/CN1241292C/zh not_active Expired - Fee Related
  • 2001-03-07 EP EP01913957A patent/EP1273069A2/de not_active Withdrawn
  • 2001-03-07 RU RU2002126561/09A patent/RU2002126561A/ru not_active Application Discontinuation
  • 2001-03-07 WO PCT/FR2001/000688 patent/WO2001067544A2/fr not_active Application Discontinuation
• 2002
  • 2002-09-04 US US10/234,927 patent/US6903705B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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