摘要:
The invention relates to a fixing arrangement (1) of a hoisting machine, in which arrangement the hoisting machine (2) comprises a stationary structure (3) as well as a rotating structure (4); which rotating structure (4) comprises a traction sheave (5), which comprises a traction surface (14) for exerting a force effect; and in which fixing arrangement the hoisting machine (2) is fixed with fixing means (7, 10) to an elongated support structure (9) such that the hoisting machine (2) is fixed to the support structure (9) from at least two points (6A, 6B) that are situated apart in the width direction (w) of the support structure for damping the vibration caused by the operation of the hoisting machine (2).
摘要:
Damping element, for the reduction of resonances in machinery assemblies, comprising at least one spring-element that is coated with at least one layer of coating, wherein the resultant spring constant k(spring) of all spring-elements of the damping element is greater than the spring constant k(coating) of the complete coating, and the resultant damping ratio c(spring) of all spring elements of the damping element is smaller than the resultant damping ratio c(coating) of the complete coating.
摘要:
The invention relates to an elevator assembly, which comprises an elevator car (15); which elevator car is suspended in the elevator hoistway with suspension means (16); and which elevator assembly comprises a hoisting machine (2) for moving the elevator car (15) along a guide rail (9) fixed to a wall part (17) of the elevator hoistway; the stationary structure (3) of which hoisting machine (2) comprises a stator (18); and the rotating structure (4) of which hoisting machine comprises a rotor (20) and also a traction sheave (5); which traction sheave (5) comprises a traction surface (14) for receiving the aforementioned suspension means (16); which suspension means (16) are rotatably supported with the aforementioned traction surface (14); and which stator (18), rotor (20) and traction sheave (5) are fitted concentrically onto the axis of rotation (19) of the hoisting machine; and which hoisting machine (2) is fitted into connection with the aforementioned guide rail (9) fixed to a wall part (17) of the elevator hoistway apart from the wall surface such that the suspension means (16) arriving at the traction surface (14) and/or leaving from the traction surface of the traction sheave travel closer to the wall part (17) of the elevator hoistway than the rear part (21) of the guide rail; and the rotating structure (4) of which hoisting machine is supported on the stationary structure (3) of the hoisting machine via one or more bearings (24); and the stationary structure (3) of which hoisting machine is further supported on the aforementioned guide rail (9) fixed to a wall part of the elevator hoistway such that the guide rail (9) bears the force exerted on the traction surface (14) via the suspension means (16); such that the stator (18) of the hoisting machine comprises a concentrated fractional-slot winding, the slot number q of which is smaller than 0.5; and that the distance of the rear surface (21) of the aforementioned guide rail (9) fixed to a wall part (17) of the elevator hoistway from the aforementioned wall part (17) of the elevator hoistway is selected to be: a) at least 120 millimeters and at most 170 millimeters when the nominal load of the elevator car (15) is at most 480 kg; b) at least 128 millimeters and at most 170 millimeters when the nominal load of the elevator car (15) is greater than 480 kg and smaller than, or equal to, 680 kg; c) at least 150 millimeters and at most 195 millimeters when the nominal load of the elevator car (15) is greater than 680 kg and smaller than 1155 kg.