An elevator includes a drive, a car operatively connected to the drive to traverse along a travel path, at least one guide rail positioned along the travel path to guide the car, a safety brake arranged on the car to exert a braking force on the guide rail, and a safety system. The safety system includes a first safety control unit and a second safety control unit that monitor a safety condition of the elevator. The first safety control unit outputs a stop signal to the drive, in particular to a drive brake and/or to a frequency converter of the drive, and the second safety control unit outputs a trigger signal to the safety brake to bring the elevator into a proper safety condition when an impermissible safety condition of the elevator is detected.

An elevator includes a drive, a car operatively connected to the drive to traverse along a travel path, at least one guide rail positioned along the travel path to guide the car, a safety brake arranged on the car to exert a braking force on the guide rail, and a safety system. The safety system includes a first safety control unit and a second safety control unit that monitor a safety condition of the elevator. The first safety control unit outputs a stop signal to the drive, in particular to a drive brake and/or to a frequency converter of the drive, and the second safety control unit outputs a trigger signal to the safety brake to bring the elevator into a proper safety condition when an impermissible safety condition of the elevator is detected.

A braking arrangement for an elevator arrangement includes a speed sensor arrangement for generating an over-speed signal of a moving component of the elevator arrangement, a hydraulic brake arrangement for generating a braking action of the moving component upon application of a hydraulic pressure and an actuator arrangement for generating and applying the hydraulic pressure to the hydraulic brake arrangement. The braking arrangement includes a control connected to the speed sensor arrangement and in response to the over-speed signal initiating an ABS braking process by controlling the actuator arrangement to repeatedly increase and decrease the hydraulic pressure to the hydraulic brake arrangement with a repetition time interval that is successively extended during the ABS braking process. The braking arrangement enables safe and reliable deceleration of the moving component, such as a car or a counterweight, while avoiding an excessive jerk by smoothly increasing the braking action.

A braking arrangement for an elevator arrangement includes a speed sensor arrangement for generating an over-speed signal of a moving component of the elevator arrangement, a hydraulic brake arrangement for generating a braking action of the moving component upon application of a hydraulic pressure and an actuator arrangement for generating and applying the hydraulic pressure to the hydraulic brake arrangement. The braking arrangement includes a control connected to the speed sensor arrangement and in response to the over-speed signal initiating an ABS braking process by controlling the actuator arrangement to repeatedly increase and decrease the hydraulic pressure to the hydraulic brake arrangement with a repetition time interval that is successively extended during the ABS braking process. The braking arrangement enables safe and reliable deceleration of the moving component, such as a car or a counterweight, while avoiding an excessive jerk by smoothly increasing the braking action.

The invention provides an elevator operation quality tester, comprising a rectangle aluminium-alloy housing provided with a casing and a covering, an upper opening of the casing is provided with a groove for embedding in a touching screen; circuit board, three-axis acceleration sensor and rechargeable battery supplying power to the circuit board are provided in the casing; the circuit board is provide with elevator vibration data acquisition circuit, back-end data processing system, interface circuit and radio communication circuit; the casing is provided with a handle on the side; the elevator vibration data acquisition circuit comprises a power isolation module, a power circuit conversion module, a three-axis acceleration sensor, an analog and digital signal isolation module and a analog-digital conversion module, the power isolation module isolates an external power supply, and the power isolation module is connected to the power circuit conversion module.

The invention provides an elevator operation quality tester, comprising a rectangle aluminium-alloy housing provided with a casing and a covering, an upper opening of the casing is provided with a groove for embedding in a touching screen; circuit board, three-axis acceleration sensor and rechargeable battery supplying power to the circuit board are provided in the casing; the circuit board is provide with elevator vibration data acquisition circuit, back-end data processing system, interface circuit and radio communication circuit; the casing is provided with a handle on the side; the elevator vibration data acquisition circuit comprises a power isolation module, a power circuit conversion module, a three-axis acceleration sensor, an analog and digital signal isolation module and a analog-digital conversion module, the power isolation module isolates an external power supply, and the power isolation module is connected to the power circuit conversion module.

Elevator systems are provided. The elevator systems include a traveling component movable along a guide rail within an elevator shaft, the traveling component comprising a roller guide moveably engageable with the guide rail and an overspeed safety system. The overspeed safety system includes an actuator module operably coupled to the roller guide and a safety brake operably connected to the actuator module by a connecting link, wherein a safety brake element of the safety brake is operable to engage with the guide rail to stop movement of the traveling component.

Elevator systems are provided. The elevator systems include a traveling component movable along a guide rail within an elevator shaft, the traveling component comprising a roller guide moveably engageable with the guide rail and an overspeed safety system. The overspeed safety system includes an actuator module operably coupled to the roller guide and a safety brake operably connected to the actuator module by a connecting link, wherein a safety brake element of the safety brake is operable to engage with the guide rail to stop movement of the traveling component.

An overspeed governor including a governor sheave, a permanent magnet rotor coupled to the governor sheave, a stator arranged to interact with the permanent magnet rotor, a safety gear for braking movement of an elevator car and a safety rope fixed to the safety gear and arranged to run via the governor sheave. The stator includes a winding adapted to exert, when energized, to the permanent magnet rotor a braking force that brakes movement of the permanent magnet rotor and, consequently, movement of the governor sheave and the safety rope, thereby activating the safety gear.

An overspeed governor including a governor sheave, a permanent magnet rotor coupled to the governor sheave, a stator arranged to interact with the permanent magnet rotor, a safety gear for braking movement of an elevator car and a safety rope fixed to the safety gear and arranged to run via the governor sheave. The stator includes a winding adapted to exert, when energized, to the permanent magnet rotor a braking force that brakes movement of the permanent magnet rotor and, consequently, movement of the governor sheave and the safety rope, thereby activating the safety gear.