In a penstock internal maintenance system, the penstock includes an inclined portion between upper and lower ends, the upper end arranged in an edifice including a water collecting chamber and a gate bearing structure allowing a gate to close the penstock, the gate bearing structure adjacent the water collecting chamber forming a vertical pit. The system includes a set of units assembled in an assembled configuration and separated in a dismounted configuration, the units including an anchor unit, a launching unit and a penstock inspection platform unit, the units in the dismounted configuration being enter the penstock through the gate bearing structure adjacent the water collecting chamber, the units are assembled when located in the penstock, the anchor unit slidingly received and retained in the gate bearing structure, the anchor unit having two lateral edges being guided and retained in two vertical lateral grooves of the gate bearing structure.

An elevator guiding device and an elevator system including the elevator guiding device. The elevator guiding device is configured to be installed on an elevator car and includes a biased member and a guiding and contacting member. The guiding and contacting member is connected to the biased member and is arranged to contact an elevator guiding rail when the elevator car is running in an unbalanced loaded state along the elevator guiding rail and cause the biased member to be biased, for guiding a running trajectory of the elevator car. The elevator guiding device further includes a connection member connected to the biased member and having an elastic member and a stop member, the elastic member is arranged to provide a pre-tightening force between the biased member and the connection member and provide a resistance force when the biased member is biased.

A building shuttle box delivery system includes a plurality of delivery ducts connected in a delivery network. The system further includes a plurality of delivery vehicles configured to travel along the delivery ducts and are accessible via a plurality of access ports distributed along the delivery network. The system may further include hold devices, movement rails, positional pads, directional pads, crawler wheel assemblies and fall brakes disposed on the delivery ducts and delivery vehicles to facilitate travel throughout the delivery network.

A method for installing an elevator system in an elevator shaft of a building in its construction phase uses a machine platform displaceable in the shaft along car guide rails and having a drive machine for moving a suspended elevator car to adapt a usable lifting height of the elevator car to an increasing height of the building by lifting the machine platform to a higher level. The method includes lowering a pre-assembled elevator unit into the shaft by a lifting device, using guide devices that are either mounted on the elevator unit and cooperate with stationarily fixed alignment elements in the shaft, or are fixed in the shaft and cooperate with alignment elements on the elevator unit, to align the unit in a position suitable for fitting guide shoes on the elevator unit and the car guide rails into one another.

A guide shoe for an elevator is formed entirely of plastic materials and includes a guide shoe housing, a damping element and a guide element that are firmly bonded to one another and form a one-piece composite structure. The composite structure is produced by a three-component injection molding process.

An elevator system (2) comprising a hoistway (4), an elevator car (6) and a counterweight (8) arranged to move within the hoistway (4). The system (2) further includes a first counterweight guide rail and a second counterweight guide rail arranged to guide the counterweight within the hoistway (4) and a guide rail bracket (32) which connects the first and second counterweight guide rails together. An elevator machine (10) is arranged to drive a tension member (14), which couples the elevator car (6) and counterweight together (8), to move the elevator car (6) within the hoistway (4). The system (2) further includes a friction reducing element (36) arranged on the guide rail bracket (32) such that if the tension member (14) moves towards the guide rail bracket (32) during operation of the elevator system (2), the tension member (14) contacts the friction reducing element (36).

The invention refers to an electric linear motor comprising at least one linear stator designed to be located in a fixed correlation to an environment, particularly building, and at least one mover designed for connection with an element to be moved and co-acting with the stator,

which motor comprises a stator beam supporting said at least one stator, which stator beam has at least one side face carrying ferromagnetic poles of said stator spaced apart by a pitch, and which mover comprises at least one counter-face facing said side face(s) of the stator beam, in which counter-face electro-magnetic components of the mover are located.

A method for determining a degraded guide rail condition in an elevator system, a computer program product, and an elevator system are disclosed. The method includes obtaining first data including information about movement of an elevator component relative to a guide rail, and obtaining second data including information about movement of an elevator component. The method further includes comparing the first data and the second data to each other, and detecting, based on the comparison, a deviation fulfilling a deviation criterion. Still further, the method includes creating a signal indicating the degraded, such as misaligned, guide rail condition, such as of the first or the second guide rail.

A guide rail bracket assembly, for connecting a car guide rail to a pair of left and right counterweight guide rails in an elevator system, includes a guide rail bracket for horizontally connecting the car guide rail to the pair of left and right counterweight guide rails. The guide rail bracket comprises a first end portion for attachment to the left counterweight guide rail, a second end portion for attachment to the right counterweight guide rail, and an intermediate portion for attachment to the car guide rail. The guide rail bracket assembly further comprises a first interface bracket for attaching the first end portion to the left counterweight guide rail, a second interface bracket for attaching the second end portion to the right counterweight guide rail, and a third interface bracket for attaching the intermediate portion to the car guide rail.

A guide rail bracket assembly, for connecting a car guide rail to a pair of left and right counterweight guide rails in an elevator system, includes a guide rail bracket for horizontally connecting the car guide rail to the pair of left and right counterweight guide rails. The guide rail bracket comprises a first end portion for attachment to the left counterweight guide rail, a second end portion for attachment to the right counterweight guide rail, and an intermediate portion for attachment to the car guide rail. The guide rail bracket assembly further comprises a first interface bracket for attaching the first end portion to the left counterweight guide rail, a second interface bracket for attaching the second end portion to the right counterweight guide rail, and a third interface bracket for attaching the intermediate portion to the car guide rail.