ATTACHED ELEVATOR SHAFT FOR ELEVATORS WITH COUNTERWEIGHT Russian patent published in 2021 - IPC E04F17/00 B66B9/00 B66B11/00 

FIELD: elevator construction.

SUBSTANCE: in an attached elevator shaft for elevators with a counterweight containing a frame consisting of horizontal belts connected by vertical support racks located along the inner perimeter of the shaft wall and placed along it, the support racks are located along the inner surface of the shaft wall and are connected to the horizontal belts and to the shaft wall by means of a rigid connection. Each horizontal belt consists of two arc-shaped sections. The first section is a part of a circle, the second arc-shaped section is a segment, the chord of which is formed by a straight bar or bars rigidly connecting the free ends of the first section. The radius of the arc of the second section is selected from the condition for placing a counterweight and/or elevator counterweight ropes inside the segment. The first arc-shaped section is made of alternating and sequentially arranged support sector, lock sector and connectors connected to each other by means of a rigid connection. The support sector is formed by two horizontal arc-shaped plates, between which vertical plates installed at an angle to each other are fixed, performing the function of stiffeners. The lock sector is formed by two horizontal arc-shaped plates, between which vertical plates installed at an angle to each other are fixed, performing the function of stiffeners. A U-shaped connector is placed between the support and lock sectors, which is formed by two horizontal arc-shaped plates, between which the middle section is located in the form of a flat arc-shaped plate. The first and second sections are smoothly conjugated and rigidly connected to each other. The arc of the second section is made of alternating and sequentially arranged support sector, lock center and connectors. Reinforced support sectors are located at the junctions of the first and second sections. In the reinforced support sector, between the horizontal arc-shaped plates on the side facing inside the belt, two bushings are installed vertically at a distance from each other, the ends of which, through holes made in the reinforced horizontal arc-shaped plates, extend outwards of both reinforced horizontal arc-shaped plates. The connection of the horizontal belt to the inner surface of the shaft wall is provided by means of an envelope rigidly connected to the inner surface of the shaft wall and to both sections of the horizontal belt by means of a rigid connection. In the upper part of the elevator shaft, horizontal beams are attached to the upper horizontal belt for attaching the reel and the electric motor.

EFFECT: technical result is a reduction in the overall dimensions of the attached (external) elevator shaft for elevators with a counterweight; ensuring ease of operation and maintenance.

35 cl, 8 dwg