| 摘要 |
FIELD: geodetic instrumentation engineering; space geodesy. SUBSTANCE: geodetic beacon has cylindrical base with taper bores and head in which antenna or blank is fitted in turn; device is provided with adapter which connects geodetic beacon and antenna; longitudinal flat and groove are made on opposite sides. Besides that, head has blind tapped hole; adapter at lower end has tail-piece located below threaded band. Geodetic beacon is mounted by means of device which consists of carrier 18, springing plate 16 and mounting plate 12 mounted coaxially and connected by means of three adjusting screws 15; they have central hole 19 which receives changeable working bush and rod 23 with bearing bush 24 at top and geodetic beacon 22 at lower end and fastening members. Carrier 18 is made form of thickened bush whose upper inner portion is provided with shoulders 26 for mounting bearing bush 24; outer portion of this bush has groove receiving adjusting screws 15. Received by central hole 19 of carrier 18 is rod 23 whose lower end has external thread for mounting it in blind hole of geodetic beacon 22 when it is mounted and secured in ground. Upper end of rod 23 has head 29 with level 30 on upper platform. Projections 25 of bush 24 rest against shoulders 26 provided on inner portion of carrier 18; bush 24 is located at clearance 27 due to which rod with geodetic beacon 22 may move. Device is provided with fastening parts for securing the beacon in ground. Fastening parts are located in spaced relation in holes 31 drilled in plate 12. Each fastening part consists of outer bush 32 with eccentric tapped hole, hexahedral head 33 fitted under plate 12 and washer 34 located at bottom of plate 12 and inner bush 35 located in eccentric tapped hole. Received by hole of inner bush is rod 37 securing plate 12 in ground by pressing lower end of rod 37 to walls of holes drilled in ground. EFFECT: mounting geodetic beacon in such position that phase center of receiving antenna is directed to zenith and coincides with axis of geodetic beacon at any time, thus providing high accuracy of measurement in three-dimensional space. 3 cl, 7 dwg |
