three-stage vertical crane strengthened, is intended for change of torques and reduction of numbers of turns in drives of mechanisms of movement of load-lifting cranes . Reducers of standard sizes of VKU-750 and VKU-950 have the case with a removable sidewall.
Service conditions of reducers cylindrical trestupenchaty vertical with evolvent tooth gearings crane strengthened in steel VKU-500, VKU-610, VKU-750, VKU-765 and VKU-965 cases:
? work in the repeated and short-term mode, i.e. at variable loadings with periodic stops -
? loading of one direction and reversive -
? rotation of shaft in any party -
? the nonaggressive environment, the atmosphere of types I and II in accordance with GOST 15150 at dust content of air no more than 10 mg/m? -
? climatic modifications? U1, U2, U3, UHL-4, T1, T2, T3 and O4 in accordance with GOST 15150.
Technical characteristics of reducers during the long work with a variable on size as loading in reverse mode of work, air temperature within 15? 25 °C are specified in tables.
Reducers allow the short-term overloads twice exceeding specified in tables and arising during start-up and stops of the engine if the number of cycles of loading of a high-speed shaft during action of these overloads does not exceed 5х104 during all service life of a reducer. The allowed frequency of cycles in unit of time has to make no more than two in an hour at a continuous operating mode.
Permissible deviation of the transfer relation of a reducer of VKU? 5%.
Technical characteristics of reducers of VKU
|Reducer type||Transfer relation||Frequency of rotation of an entrance shaft, mines-1||Nominal torque on day off to a shaft, N • m|
The overall and connecting dimensions of the vertical crane strengthened VKU reducers
|Reducer type||Size, mm||Weight, kg|
Identification number: Reducer of VKU-765-20-12-Ts-U3, where
VKU? reducer type.
765? interaxal distance of an output step, mm.
20? nominal transfer relation.
12? assembly option.
C? execution of the end of an output shaft.
U3? climatic modification and category of placement in accordance with GOST 15150-69.