| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to devices providing safety at climbing wooden, reinforced-concrete or metal supports of high-voltage power transmission lines at their service and repair by fixing supports by means of struts. A manoeuvrable bracing device consists of frame 5 with lodgment 6 providing contact to support 2, on which there installed is lever-screw mechanism 4 and roller chain 7 put into the frame as per the diagram in Figure 5 so that it forms two loops: one loop 7 by means of lock 3 around support 2, the second one forms loop 8 around lever-screw mechanism 4. The mechanism controls chain loop tension around support 2 by means of rotation of screw 11 with the first link of tie-rod 9 and its further links for supply of the device to necessary height of support 2.EFFECT: invention provides creation of a manoeuvrable mechanism with reliable coverage of supports.5 dwg |
