Internally hidden type lifting mechanism with rotary self-locking function

Abstract

The invention discloses an internally hidden type lifting mechanism with a rotary self-locking function. The internally hidden type lifting mechanism comprises a lifting rod I, a lifting rod II, a stranded wire disc, a steel wire rope and a self-locking device. The internally hidden type lifting mechanism is characterized in that the lifting rod II is nested inside the lifting rod I; a pulley assembly is arranged between the lifting rod I and the lifting rod II, and comprises a first fixed pulley, a first movable pulley, a second fixed pulley and a second movable pulley; a transition wheel is further arranged at the outer side of the upper part of the lifting rod I; the wire-stranding plate is arranged at the outer side of the middle part of the lifting rod I; the steel wire rope sequentially passes through the transition wheel, the first fixed pulley, the first movable pulley, the second fixed pulley, the second movable pulley and a steel wire rope fixing shaft; one end of the steel rope is wound on the wire-stranding plate, and the other end of the steel rope is fixedly arranged on the steel wire rope fixing shaft; the self-locking device is arranged at the bottom end of the lifting rod I; the self-locking device comprises a lifting rod base, a bearing, a bearing pin, a slide block, a spring and a spring box; and the lifting rod base is engaged with the bearing. The internally hidden type lifting mechanism disclosed by the invention realizes automatically locking the lifting rods; and lifting height of a lamp post lifting system is increased, so that the internally hidden type lifting mechanism saves time and labor, and is beautiful.

Description

technical field [0001] The invention relates to the technical field of lifting machinery, in particular to a built-in lifting mechanism with rotary self-locking for mobile lighting towers. Background technique [0002] At present, mobile lighting towers have been widely used in various technical fields. The traditional manual antenna-type upright lifting pole adopts the manual type, that is, a manual winch is installed on the first section of the lifting pole, and a fixed pulley or a pulley block outside drives the steel wire rope to raise the light pole. For example, the invention patent application with the application number 201310218555.9 A lifting and telescopic light pole is developed, which controls the lifting or lowering of the lifting pole through the cooperation of a manual winch and a pulley, and solves the technical problem of fixing the height of the light pole. However, in this case, if the number of its sections exceeds 5 sections, it will be more difficult ...

AI Technical Summary

Problems solved by technology

In the prior art, the utility model patent No. ZL201310405886.3 discloses a rope wheel with a self-locking device, through the U-shaped plate and the long slotted hole with a certain slope and the roller set in the U-shaped plate. , to realize the self-locking of the wire rope, but this structure needs to manually control the wrench on the runner to lock the position of the wire rope, which is poor in automation and inconvenient to operate; the invention patent application with application number 201410698728.6 has announced a self-locking descender- The tethering device realizes the automatic locking of the rope through the cooperation of the guide flange and the cam, which solves the technical problem of poor controllability of the rope brake, but the structure of the device is relatively complicated and it is difficult to maintain

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