Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q1/00—Details of, or arrangements associated with, antennas
  • H01Q1/08—Means for collapsing antennas or parts thereof
  • H01Q1/10—Telescopic elements
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
  • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
  • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
  • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
  • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
  • F16B7/22—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using hooks or like elements
• • 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 rapidly deployable antenna masts. More particularly, this invention relates to such antenna masts which are used for rapidly deployable wireless network communication equipment.
• Prior art antenna masts are either operated by hydraulic or by mechanical crank operated drive means which are frequently employed in combination with bulky framework structures providing the required support.
• One of the main disadvantages of such antenna mast structures is due in part to the fact that the base support structures are rather large and can be expensive but also in the fact that they tend to rely on multiple hydraulic drive mechanism which may develop a leak.
• Still another disadvantage is rather apparent is in that the time required for setting up these antennas mast with their support structures, including the guy wires required to stabilize antenna mast due to the wind load.
• a telescoping antenna mast system which is operable by a combination of ground level mounted hydraulic cylinder means and a plurality of combination latching and load support actuators, whereby the extension and retraction of the antenna mast system may be accomplished rapidly.
• the invention includes a bottom mast section, with a removable bottom flange end, which receives hollow mast sections so that when the antenna mast system is retracted the overall antenna mast height is suitable for transportation.
• Each antenna mast section surrounds each upper end of each antenna mast section in a sliding manner. All antenna mast sections are provided with upper ears at their upper end, except the topmost mast section to provide a defined retraction height for the antenna mast system.
• a hydraulically operated cylinder with a longitudinally extendable and retractable rod is positioned interior of the antenna mast system, confined by the inner dimensions of the upper most mast section, along common centerline axis.
• Each intermediate telescoping mast section is provided with an
• electromechanically actuated lifting pin The upper most antenna mast section has been fitted with a permanent lifting pin.
• the bottom most mast section does not have lifting pin since this section is not elevated, but instead is provided with a pair of electromechanically actuated holding latches.
• Each intermediate and upper most telescoping mast section is provided with upper and lower holding pin or latch cut outs.
• a bottom most section is only provided with upper holding latch cut outs.
• the hydraulically operated cylinder has its bottom end attached to the bottom flange of the bottom most antenna mast section. This allows easy service access to the hydraulic lines and hydraulic cylinder without requiring telescoping mast disassembly.
• a further advantage of the structure according to the invention is that a heavy hydraulic cylinder is mounted and operated low to the ground resulting in lower overall center of gravity. As such, no guy wire support is required.
• this type of antenna mast construction has the advantage that it makes possible a compact overall length of the antenna mast system in its stowed condition, whereby the entire structure is especially suitable for installation on vehicles by simple means and the entire apparatus is easy to operate.
• FIG. 1 is a multi view drawing of a telescoping mast system of the invention with mast sections shown in a stowed vertical position.
• FIG. 2 is a multi view drawing of the telescoping mast system of the invention with mast sections shown in fully deployed position.
• FIG. 2A is a multi view representation of the upper most mast section - section #1 of the telescoping mast system with structural details identifying holding and lifting slots.
• FIG. 2B is a multi view representation of the second mast section - section #2 of the telescoping mast system with structural details identifying holding and lifting slots.
• FIG. 2C is a multi view representation of the third mast section - section #3 of the telescoping mast system with structural details identifying holding and lifting slots.
• FIG. 2D is a multi view representation of the fourth mast section - section #4 of the telescoping mast system with structural details identifying holding and lifting slots.
• FIG. 2E is a multi view representation of the fifth mast, bottom most section -section #5 of the telescoping mast system with structural details identifying holding and lifting slots.
• FIG. 3 is a cross sectional view of the telescoping mast system of the invention with mast sections shown in stowed vertical position.
• FIG. 3 A is a cross sectional detail view of the telescoping mast system with mast section 2 ears shown in stowed vertical position.
• FIG. 3B is a cross sectional detail view of the telescoping mast system with mast section 1 lifting flange shown in a stowed vertical position.
• FIG. 4 is a cross sectional view of the telescoping mast system of the invention with mast sections shown in stowed vertical position and locked with holding pins 205 a, b.
• FIG. 4A is a cross sectional view detail of the top portion of mast section 2.
• FIG 4B is a cross sectional view detail of the top portion of mast section 4.
• FIG. 5 is a cross sectional detail view of the telescoping mast system of the invention in stowed configuration with bottom holding latch and upper locking pin identified.
• FIG. 5 A is a cross sectional detail view of the telescoping mast system with mast section lifting pin latch modules.
• FIG 5B is a cross sectional detail view of the telescoping mast system with mast section bottom latch module shown in stowed (locked) configuration.
• FIG. 6 is a cross sectional detail view of the telescoping mast system of the invention in initial deployment mode configuration with hydraulic ram starting to lift the first mast section.
• FIG. 6A is a cross sectional detailing initial deployment mode configuration with the hydraulic ram in contact with lifting rod of the first mast section.
• FIG. 6B is a cross sectional view of the invention detailing the bottom latching mechanism in unlocked configuration as the hydraulic lifting ram is pushing upwardly and lifting the first mast section.
• FIG 7 is a view of the telescoping mast system of the invention with the hydraulic ram providing maximum lift for the first mast section.
• FIG 7A is a cross sectional view detailing the bottom latching mechanism in unlocked configuration as the hydraulic ram is providing maximum lift for the first mast section and detailing alignment of bottom holding pin cutout relative to the top holding pin cutouts.
• FIG 8 is a cross sectional view detailing the first mast section supported by the bottom holding latches while the hydraulic lifting ram is fully retracted.
• FIG 8A is a cross sectional view detailing the second mast section lifting pin prior to being inserted into a locked position.
• FIG 8B is a cross sectional view detailing the bottom holding latches supporting the first mast section at a fully extended position.
• FIG 9 is a cross sectional view detailing the second mast section lifting pin inserted and effectively coupling mast sections 1 and 2 together but prior to carrying a vertical load.
• FIG 9A is a cross sectional view detailing the second mast section lifting pin inserted through corresponding slots and effectively coupling mast sections 1 and 2 together.
• FIG 9B is a cross sectional view detailing the bottom holding latches supporting the first mast section at a fully extended position so that the second mast section lifting pin can be inserted through corresponding slots without undue force.
• FIG 10 is a cross sectional view detailing the lifting of the coupled first and second mast sections with the hydraulic lifting ram applied against the second mast section lifting pin.
• FIG 1 OA is a cross sectional view detailing the second mast section lifting pin inserted through corresponding slots with the hydraulic lifting ram applied against its bottom surface and lifting mast sections 1 and 2 together.
• FIG 10B is a cross sectional view detailing the bottom holding latches in an unlocked state allowing free movement of telescoping mast sections.
• FIG 11 is a cross sectional view detailing the first and second mast sections in fully extended position and supported with the bottom holding latches while the hydraulic lifting ram is fully retracted.
• FIG 11 A is a cross sectional view detailing the third mast section lifting pin prior to being inserted into a locked position.
• FIG 1 IB is a cross sectional view detailing the bottom holding latches in a locked state supporting combined mast sections 1 and 2.
• the present invention is a system and methods for hydraulic cylinder operated antenna mast system for deploying antenna or similar equipment in a rapidly deployable situation. Many specific details of certain embodiments of the invention are set forth in the following description and in accompanying FIGS. 1 to 1 IB to provide an adequate understanding of these
• FIG. 1 depicts front, profile and cross sectional profile views of the hydraulically operated antenna mast system 100.
• the hydraulically operated antenna mast system 100 is constructed using multiple telescoping mast sections (1-5) having perimeter dimensions that permit fitment of smaller sections - section 1 being the smallest - within each other in a successive fashion so as to allow longitudinal extension there between.
• a hydraulic lift cylinder (202) Constrained within collapsed telescoping mast sections (1-5) is a hydraulic lift cylinder (202) which is dimensioned and fits within inner dimensions of the smallest telescoping mast sections - section #1.
• the telescoping mast sections may be constructed from any number of suitable materials - such as metal, fiberglass, carbon-fiber, etc and any number of structural shapes may be used to implement telescoping sections, for example cylindrical, triangular, rectangular, etc., for a rapid deployment antenna mast system light weight and ability to withstand rigors of adverse field conditions are some of the critical requirements.
• the telescoping mast is pivotally mounted on a podium frame (201) so as to allow transition from horizontal - transportation position to vertical position.
• a dedicated hydraulically operated cylinder provides transition between two positions.
• alternative mechanical implements can be adapted to perform the same task.
• the bottom most section of the telescoping mast - section 5 is non extendable. In retracted configuration the antenna mast system mast sections have maximum mutual overlap and, conversely, when fully extended mutual overlap between subsequent sections is at its minimum.
• FIG. 2 depicts front, profile and cross sectional profile of the hydraulically operated antenna mast system 100 in fully extended configuration.
• a load such as an antenna, may be attached at the top of the mast section #1.
• Mast section #1 is the inner most of the sections and consequently has the smallest overall cross section. Mast section may be constructed from extruded steel stock of various shape and sizes. In larger variants, a welded ladder structure can be used to minimize static weight.
• Mast section #1 is provided with a set of vertical travel limit ears (8a, b) which limit downward movement of the mast section within the telescoping stack and is further equipped with three sets of predefined slots in its structural perimeter. Upper most slots 16a, b of section #1 are used for insertion and removal of bottom holding latch 205a,b when antenna mast section #1 is in stowed or transportation mode configuration.
• mast section #2 Second from the top slots 25a, b of section #1 are used for insertion and removal of mast section #2 insertable lifting pin 206. Third from the top slots 21a, b of section #1 are used for bottom holding latch 205 a, b when antenna mast section #1 is being deployed or lowered. [0047] Structural details relating to the second mast section #2 are depicted in Fig 2B. Mast section #2 has a perimeter that is larger than the perimeter of mast section #1 so as to allow sliding movement of mast section #1 within mast section #2. In a stowed or retracted
• mast section #1 vertical travel limit ears (8a, b) rest on mast section #2 upper flange 12 top surface.
• Mast section #2 is provided with a set of vertical travel limit ears (9a, b) which limit downward movement of mast section #2 within the telescoping stack of the system 100.
• Mast section #2 is further equipped with four sets of predefined slots in its structural perimeter. Upper most slots 35a, b are used for insertion and removal of section #3 lifting pin 207 and located above vertical travel limit ears (9a, b) and below upper flange 12. Second from the top slots 17a, b allow bottom holding latch 205a, b to reach into mast section #1 bottom holding slots 21a, b or top holding slots 16a, b when antenna mast section #1 is being deployed or lowered.
• mast section #2 Third from the top slots 26a, b of mast section #2 are used for insertion and removal of the section #3 insertable lifting pin 207. Fourth from the top slots 22a, b of mast section #2 are used for bottom holding latch 205a, b when mast section #2 is being deployed or lowered.
• mast section #3 has a perimeter that is larger than the perimeter of mast section #2 so as to allow sliding movement of mast section #2 within mast section #3.
• mast section #2 vertical travel limit ears (9a, b) rest on mast section #3 upper flange 13 top surface.
• Mast section #3 is provided with a set of vertical travel limit ears (10a, b) which limit its downward movement within the telescoping stack 100 of the system 100.
• Mast section #3 is further equipped with four set of predefined slots in its structural perimeter.
• Upper most slots 36a, b of mast section #3 are used for insertion and removal of section #4 lifting pin 206 and located above vertical travel limit ears (10a, b) and below upper flange 13.
• Second from the top slot 18a, b allows bottom holding latch 205a, b to reach into inner mast section #2 bottom holding slots 22a, b or top holding slots 17a, b, mast section #1 bottom holding slots 21a, b or top holding slots 16a, b when antenna mast sections #1 and #2 are being deployed or lowered.
• Third from the top slots 27a, b of mast section #3 are used for insertion and removal of mast section #4 insertable lifting pin 208.
• mast section #3 Fourth from the top slots 23a, b of mast section #3 are used for bottom holding latch 205a, b when mast section #3 is being deployed or lowered. [0049] Structural details relating to the fourth mast section #4 are depicted in Fig 2D. Unlike mast sections #2 and #3, mast section #4 omits one set of slots used for lifting pin insertion. Mast section #4 has a perimeter that is larger than the perimeter of mast section #3 so as to allow sliding movement of mast section #3 within mast section #4. In a stowed or retracted
• mast section #3 vertical travel limit ears (10a, b) rest on mast section #4 upper flange 14 top surface.
• Mast section #4 is provided with a set of vertical travel limit ears (11 a, b) which limit its downward movement within the telescoping stack of the system 100.
• Mast section #4 is further equipped with three sets of predefined slots in its structural perimeter. Upper most slots 37a, b of mast section #4 are used for insertion and removal of latch 205a, b and are located above vertical travel limit ears (1 la, b) and below upper flange 14. Second from the top slots 19a, b allow bottom holding latch 205a, b to reach into mast section #l-#3 bottom and top holding slots when antenna mast sections #l-#3 are being deployed or lowered.
• mast section #4 Third from the top slots 24a, b of mast section #4 are used for bottom holding latch 205a, b when antenna mast section #4 is being deployed, lowered or in its final installation state.
• a specific lifting pin is omitted from mast section #5 as bottom holding latch 205a, b performs double position retaining duty when mast section #4 is fully elevated.
• mast section #5 is different from the other mast sections in that it is not subject to a vertical elevation. It serves as a bottom foundation of the antenna mast system 100.
• Mast section #5 has a perimeter that is larger than the perimeter of mast section #4 so as to allow sliding movement of mast section #4 within mast section #5.
• mast section #4 vertical travel limit ears (1 la, b) rest on mast section #5 upper flange 15 top surface.
• Mast section #5 is not provided with a set of vertical travel limit ears since there is no vertical movement of mast section #5 associated with the telescoping of the stack.
• Access slots 20a, b allow bottom holding latch 205a, b to reach into mast section #l-#4 bottom or top holding slots when antenna mast sections #1-4 are being deployed or lowered. There is no lifting pin for mast section #5 and so, as noted, bottom holding latch 205a, b performs double duty for the elevation of mast section #4.
• Lifting cylinder rod 203 is moved upwardly from a resting position until in contact with bottom surface 7 of upper mast section #1 lifting rod 6.
• Retraction sequence steps are as follows: Reverse steps 1.5.24 to 1.5.1.
• FIG. 3 is a cross sectional profile view of the antenna mast system 100 in a fully retracted (stowed) configuration.
• the antenna mast is tilted from a horizontal position used for transportation into a vertical position in preparation for its deployment by extending its section vertically so as to elevate the payload attached to its uppermost mast section - mast section #1.
• mast section ears 8a,b, 9a,b, 10a,b and 1 la,b bottom contact surfaces rest directly on corresponding subsequent mast section upper flange surfaces 12, 13, 14 and 15.
• the bottom latches 205a, b are in a locked position so as to prevent movement of mast sections #l-#5 within a nestled stack during transportation or during tilting process.
• the orientations of the ears and flanges of respective adjacent mast sections are shown in the following table:
• FIG. 3 A for detail B of FIG. 3 is a cross sectional profile view the antenna mast system 100 in a fully retracted configuration with mast section ears 9a, b of mast section #2 resting on the upper flange 13 of mast section #3.
• FIG. 3B for detail D of FIG. 3 is a cross sectional profile view antenna mast system in a fully retracted configuration.
• Detail B details the upper most area of mast section #1 fixed lifting pin 6 bottom surface where lifting cylinder rod 203 comes in contact with it.
• mast section #1 is different from mast sections #2-#4 as it includes permanently installed lifting pin 6.
• This detail also shows that mast section ears 1 la, b of mast section #4 rest on the surface of upper flange 15 of mast section #5.
• FIG. 4 is a cross sectional profile view of the antenna mast system 100 in a fully retracted configuration with major structural elements and their configuration identified.
• FIG. 4A for detail A of FIG. 4 is a cross sectional profile view showing mast sections #1 and #2 with the antenna mast system 100 in a fully retracted configuration.
• the mast section ears 8a, b of mast section #1 rest on the upper surface of flange 12 of mast section #2.
• FIG. 4B for detail C of FIG. 4 is a cross sectional profile view showing the mast sections of the antenna mast system 100 in a fully retracted configuration. Mast section ears 10a, b of mast section #3 rest on the surface of upper flange 14 of mast section #4.
• FIG. 5 is a cross sectional profile view of the antenna mast system 100 in a fully retracted configuration with major structural elements identified.
• FIG. 5 A for detail F of FIG. 5 shows the lifting pins of the antenna mast system 100.
• lifting pins 206, 207, 208 are in retracted position since the mast slots are not aligned.
• Lifting pins 206, 207, 208 serve double duty: they couple mast sections together and they are used as lifting pads by the lifting cylinder rod 203 when it comes in contact with their bottom surfaces.
• the orientations of the locking pins and their associated lifting pin slots are shown in the following table.
• FIG. 5B for detail E of FIG. 5 is a cross sectional view of the bottom holding latches with respect to the mast sections.
• bottom holding latches 205a, b are in a locked position protruding through holding pin cutouts 16a, b, 17a, b, 18a, b, 19a, b and 20a, b for all five mast sections, thereby preventing mast section nestling movement.
• the lifting cylinder rod 203 used for elevating or lowering mast sections is shown at its bottom most resting position.
• FIG. 6 is a cross sectional profile view of the antenna mast system 100 in an initial stage Lla of lifting inner most mast section #1 from a fully retracted position to a full extension relative to mast section #2.
• Mast section #1 is in a fully retracted position when section ears 8a, b are resting on the upper surface of flange 12 of mast section #2.
• FIG. 6 A for detail H of FIG. 6 is a cross sectional illustration of the area around the lifting cylinder rod 203 in the process of lifting mast section #1.
• the lifting cylinder rod 203 is used for elevating mast section #1 by moving it from its resting position upwardly until it comes in contact with bottom surface 7 of lifting pin 6 of mast section #1.
• FIG. 6B for detail E of FIG. 6 is a cross sectional illustration of the area around the holding latches 205a, b in the process of lifting mast section #1.
• lifting cylinder rod 203 is in contact with the bottom surface 7 of the lifting pin 6, the bottom holding latches 205a,b are released to allow free vertical movement of the mast section #1 that is being elevated by the vertical displacement of the lifting cylinder rod 203.
• the remaining mast sections #2- #4 remain stationary during this process.
• FIG. 7 is a cross sectional profile view of the antenna mast system 100 in a maximum lift position Lib of inner most mast section #1.
• FIG. 7 A for detail I of FIG. 7 is a cross sectional view of the mast antenna system 100 in the area of the bottom holding latches 205a, b.
• the lifting cylinder rod 203 has elevated mast section #1 to its maximum lift position.
• the bottom holding latches 205a, b were previously released so as to allow free vertical movement of the mast section #1 relative to the remaindered of the mast sections.
• the bottom holding slots 21a, b of the mast section 1 have been elevated above a common protrusion opening formed by the upper holding slots 17a, b, 18a, b, 19a, b and 20a, b of mast sections #2- #5.
• the upward motion by the lifting cylinder rod 203 has been terminated at this stage of the process.
• the bottom holding latches 205a, b are armed so that once the common protrusion opening is formed by the bottom holding slots 21a, b of mast section #1 and the upper holding slots 17a, b, 18a, b, 19a, b and 20a, b of mast sections #2-#5, the holding latches 205a, b lock mast sections #l-#5 together.
• FIG. 8 is a cross sectional profile view of the antenna mast system 100 with inner most mast section #1 in fully deployed position Lie.
• FIG. 8A for detail J of FIG. 8 is a cross sectional view of the mast antenna system 100 in the area of the lifting pin 206.
• FIG. 8B for detail K of FIG. 8 is a cross sectional view of the mast antenna system 100 in the area of the bottom holding latches 205a, b.
• lifting cylinder rod 203 lowers mast section #1 from maximum lift position Lib to deployment lift position Lie, the lifting slots 25a, b of mast section #1 are aligned with corresponding upper lifting pin 35a, b slots of mast section #2.
• Lifting pin 206 of mast section #2 is ready to be inserted into slots 25a, b, and, upon actuating the lifting pin 206 for that purpose, mast sections #1 and #2 are locked together.
• the bottom holding latches 205a, b are also in the locked position, protruding through the common protrusion opening formed by the holding slots 21a, b of mast section #1 and the upper holding slots 17a, b, 18a, b, 19a, b and 20a, b of mast section #2-#5.
• the holding latches 205a, b lock mast sections #l-#5 together.
• mast section #1 was lowered from maximum lift position Lib to deployment lift position Lie with its weight being supported by upper thrust surfaces 28a, b of the holding latches 205 a, b.
• FIG. 9 is a cross sectional profile view of the antenna mast system 100 with inner most mast section #1 in fully deployed position Lid with lifting pin 206 in an inserted and locked position.
• FIG. 9A for detail L of FIG. 9 is a cross sectional view of the mast antenna system 100 in the area of the lifting pin 206.
• FIG. 9B for detail K of FIG. 9 is a cross sectional view of the mast antenna system 100 in the area of the bottom holding latches 205a, b.
• the locking pin 206 has been inserted through opening 25a, b in the mast section #1. Since at this stage of the deployment process mast section #1 is being supported with the holding latches 205a, b, the locking pin 206 can be inserted without any interference from mast section #1.
• mast sections #1 and #2 are loosely coupled together - allowing some degree of vertical displacement of mast section #1 relative to section 2 due to the fact that slots 25a, b are larger than slots 35a, b of mast section #2.
• the holding latches 205a, b are in a locked position, protruding into bottom holding slots 21a, b of mast section #1 with upper flange surface 28a, b of the holding latches 205a,b in contact with holding slots 21a, b, thereby maintaining mast section #1 in its vertical position.
• FIG. 10 is a cross sectional profile view of the antenna mast system 100 with inner most mast section #1 in fully deployed position Lie with lifting pin 206 in an inserted and locked position, and with lifting cylinder rod 203 in contact with lifting pin 206 so as to elevate the mast sections #1 and #2 as a combined assembly.
• FIG. 10A for detail M of FIG. 10 is a cross sectional view of the mast antenna system 100 in the area of the lifting pin 206 and lifting cylinder rod 203.
• FIG. 10B for detail N of FIG. 10 is a cross sectional view of the mast antenna system 100 in the area of the bottom holding latches 205a, b. As represented in FIGS.
• the process of elevating the antenna mast system 100 proceeds further with lifting cylinder rod 203 moved from its rest position until it makes contact with lifting pin and continues upward to elevate mast sections #1 and #2 together as a combined assembly. Consequently, the load lifting point is shifted toward lifting pin 206.
• the lifting cylinder rod 203 is moved upwardly until mast section #2 has been elevated to a maximum allowable elevation L2a relative to the upper flange of mast section #3. Since lifting cylinder rod 203 provides upwardly movement when in contact with lifting pin 206, the holding latches 205a, b are in an unlocked position, allowing free mast section #2 to move upwardly (and mast section #1 with it).
• the holding latches 205a, b are set to latch when mast section #2 is lowered slightly using lifting cylinder rod 203, from the maximum allowable elevation L2a to holding latch slot alignment position L2b shown in FIG. 11. Once lowered to holding latch slot alignment position L2b, the holding latches 205a, b are set in a locked position.
• FIG. 11 is a cross sectional profile view of the antenna mast system 100 with mast sections #1 and #2 in fully deployed positions Lie and L2b with lifting pin 206 in an inserted and locked position, and with lifting cylinder rod 203 fully retracted and with bottom holding latches in locked positions.
• FIG. 10A for detail O of FIG. 11 is a cross sectional view of the mast antenna system 100 in the area of the lifting pin 207.
• FIG. 1 IB for detail P of FIG. 11 is a cross sectional view of the mast antenna system 100 in the area of the bottom holding latches 205a, b.
• mast section #2 With mast section 2 at deployed position L2b and supported with bottom holding latches 205a, b, mast section #2 lifting pin cutouts 26a, b are aligned against lifting pin 207 of mast section #3.
• the lifting pin 207 of mast section #3 can be inserted into the cutouts 26a, b when lifting cylinder rod 203 in fully retracted, rest position.
• the bottom holding latches 205a, b are in a locked position when upper flange surface 28a, b of the holding latches 205a, b are in contact with holding slots 20a, b, thereby maintaining mast section #2 in a vertical lifted position.
• mast section #4 The remaining liftable mast section, mast section #4, is deployed in the manner previously described above and with respect to the deployment of mast sections #2 and #3.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• General Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Computer Networks & Wireless Communication (AREA)
• Mechanical Engineering (AREA)
• Details Of Aerials (AREA)
• Support Of Aerials (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50389007

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (2)

Citations (5)

Family Cites Families (7)

• 2013
  • 2013-09-27 WO PCT/US2013/062281 patent/WO2014052817A1/en active Application Filing
  • 2013-09-27 CN CN201380054653.1A patent/CN104813537B/zh not_active Expired - Fee Related
  • 2013-09-27 EP EP13842452.8A patent/EP2901522A4/en not_active Withdrawn

Patent Citations (5)

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events