Abstract

An elevator pulled by a dual-motor drive device, comprising: a ascent and descent space (1001); a cage (1002) and a counterpoise (1003) that ascend and descend in the ascent and descent space (1001); a traction rope (1104) that suspends the cage (1002) and the counterpoise (1003); a first motor drive device (1); and a second motor drive device (2001). The first motor drive device (1) is provided with a first motor (10) and a first gear assembly (2); the second motor drive device (2001) is provided with a second motor (2010) and a second gear assembly (2002); in the axial direction of a traction rope wheel (30), the traction rope wheel (30) is located between the first motor drive device (1) and the second motor drive device (2001); torque generated by the first motor (10) of the first motor drive device (1) and torque generated by the second motor (2010) of the second motor drive device (2001) are transmitted to the traction rope wheel (30) by means of the first gear assembly (2) and the second gear assembly (2002) respectively, so as to drive the traction rope wheel (30) to rotate. The dual-motor drive device can be used for outputting high torque so as to increase the traction force of the traction rope, and thus may meet the demand for expanding an application scenario of a heavy-load elevator.

IPC Classes  ?

• B66B 11/04 - Driving gear
• B66B 11/08 - Driving gear with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
• B66B 17/12 - Counterpoises
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

An elevator using an electric-motor drive device for traction. The elevator comprises: a car (1002) and a counterweight (1003), which ascend and descend in an ascend-and-descend space (1001); and a traction rope (1004), by means of which the car (1002) and the counterweight (1003) are suspended. A traction rope sheave (30) fitted with the traction rope (1004) has a traction rope sheave pitch circle (310); and by means of the traction rope (1004), the rotational motion of the traction rope sheave (30) makes the car (1002) and the counterweight (1003) ascend and descend. An electric-motor drive device (1) comprises an electric motor (10) and a gear assembly (2), wherein the electric motor (10) drives, by means of the gear assembly (2), the traction rope sheave (30) to perform a rotational motion; and the projections of transmission gears of the gear assembly (2) in the axial direction of the traction rope sheave (30) are set within an area surrounded by the projection of the traction rope sheave pitch circle (310) in the axial direction of the traction rope sheave (30). The elevator uses the miniaturized electric-motor drive device to output a relatively large torque, and uses the traction rope sheave having a relatively large diameter and the traction rope having a relatively large diameter to improve a traction force of the traction rope, thus satisfying the requirements of application scenarios of lifting a large load and operating at a high speed. Therefore, the present invention can not only reduce an occupied space and facilitate carrying, installation and arrangement, and maintenance, but can also make the manufacturing of parts more convenient, and thus saves on raw materials, shortens processing and assembly time, and reduces the manufacturing costs of the parts.

IPC Classes  ?

• B66B 11/08 - Driving gear with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
• B66B 17/12 - Counterpoises

Abstract

A preparation method for an ultra-high molecular weight polyethylene (UHMWPE) nanocomposite material product, comprising: step S1, preparing a UHMWPE base material into a UHMWPE melt, and injecting the UHMWPE melt into a mold; step S2, cooling the UHMWPE melt to a first temperature in a preset pressure state; step S3, injecting a low-molecular-weight polyolefin nanocomposite melt into the UHMWPE melt at a second temperature; and step S4, cooling and shaping to prepare a UHMWPE nanocomposite material product. The mechanical property and wear resistance of the UHMWPE product itself are guaranteed, the surface of the prepared UHMWPE product is uniform in structure, a lubricating layer is formed by means of the surface structure, the stable ultra-low friction coefficient is guaranteed, the forming process is simple, one-time forming is achieved, the cost is low, and good market prospects are provided.

IPC Classes  ?

• C08L 23/06 - Polyethene
• C08K 3/04 - Carbon
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
• B29C 45/27 - Sprue channels

Abstract

An elevator car door machine device, comprising an elevator door machine beam (131), a door vane assembly and a door vane mount (1); the door vane assembly comprises a first movable vane (2) and a second movable vane (27), a first movable vane driving device, a protrusion portion (13), and a blocking portion (9); the blocking portion (9) can abut against the protrusion portion (13); the blocking portion (9) can restrict the swing range and swing speed of the first movable vane (2) when a car door is opened, and enable the first movable vane (2) to swing in a direction away from the second movable vane (27) when the car door is closed. The elevator car door machine device can prevent a landing door lock swivel hook from contacting a fixed hook of a landing door lock prematurely, and effectively retains the kinetic energy of a landing door.

IPC Classes  ?

• B66B 13/20 - Lock mechanisms actuated mechanically by abutments or projections on the cages
• B66B 13/12 - Arrangements for effecting simultaneous opening or closing of cage and landing doors

Abstract

An elevator car door machine device having a car door lock, comprising an elevator door machine beam (131), a door vane assembly and a door vane installation base (1), the door vane installation base (1) being fixedly provided on a car door of a driving side; the door vane assembly comprises a first moving vane (2), a second moving vane piece (27), a first moving vane piece driving device, a protruding portion (13), a fixing hook (16), a barrier portion (9), and a rotating hook (11), the rotating hook (11) cooperating with the fixing hook (16) so as to lock or release the elevator car door; the barrier portion (9) may abut against the protruding portion (13) so as to limit the rotation range and speed of the first moving vane piece driving device. The elevator car door machine device may prevent passengers in the car from widening a door gap too much when the elevator is at an abnormal unlocking area so as to prevent danger, and the car door may be opened as long as a level door is opened during emergency rescue in the unlocking area and when the door opens and closes normally in the unlocking area.

IPC Classes  ?

• B66B 13/12 - Arrangements for effecting simultaneous opening or closing of cage and landing doors
• B66B 13/16 - Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position

Abstract

An elevator floor door lock device comprises a contact switch (5), a connector (6), a rotating catch (3), and a fixing lock catch (4). The contact switch (5) and the fixing lock catch (4) are fixed on an upper frame body (1) by a mounting plate (14). The connector (6) is fixed on the rotating catch (3). The rotating catch (3) is fixed on an active door hanging plate (2). The connector (6) comprises a U-shaped conductive block (13). When the connector (6) rotates, along with the rotating catch (3), to a position, one end of the conductive block (13) of the connector (6) enters a through slot of an insulation housing (7), and at this time, the conductive block (13) presses a contact (9) of the contact switch (5) to cause the contact (9) to be connected. An electrical safety device of the elevator floor door lock device satisfies the protection level IP2X. The invention also discloses an elevator floor door device comprising the elevator floor door lock device.

IPC Classes  ?

• B66B 13/16 - Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position

Abstract

An elevator traction machine. A motor (1) of the elevator traction machine comprises a stator (11) fixed onto a body portion (2) and a rotor (13) fixed onto a rotating portion (3). A sheave protecting plate (7) is fixed onto the body portion (2) and extends to a side surface of a sheave (32) which drives an elevator rope (6). A measuring device (5) comprises a gear (8) and a sensor (9). The gear (8) is attached to the rotating portion (3) and rotates around a rotation axis (31) together with the rotor (13). Multiple teeth (81) are circumferentially provided on the gear (8). Distances between adjacent teeth (81) are approximately equal. The sensor (9) mounted on the sheave protecting plate (7) is next to the teeth (81) on the gear (8), and is configured to sense movement of the teeth (81) on the gear (8) relative to the sensor (9) and output measuring signals which changes periodically. The invention does not use a magnetic induction belt, reduces the manufacturing cost, makes it simple to assemble and use the product, and eliminates risks caused by reduction of magnetism of the magnetic induction belt.

IPC Classes  ?

• B66B 11/04 - Driving gear

Abstract

Disclosed is a safety detection device of a passenger conveying apparatus, comprising: one or more markers (22), disposed on any low-speed rotating part, at least one marker or a combination of multiple markers being distributed on the tubular side surface or circular bottom surface of at least one low-speed rotating part over 360 degrees to represent different rotation angles of the low-speed rotating part; at least one optical sensor (9), separate from the low-speed rotating part that the rotation angle marker is on, and used for recognizing the marker (22); and a controller, connected to the optical sensor (9), and used for calculating the running direction and/or speed of steps of the passenger conveying apparatus according to the markers recognized by the optical sensor (9) at different time points (t1, t2), and stopping the passenger conveying apparatus when the running direction of the steps is reversed or the running direction of the steps is excessively high. The detection device is designed for a wide range of types of faults, and with the use of non-contact optical detection, the reliability of the detection device and the stability of operation are greatly improved.

IPC Classes  ?

• B66B 29/00 - Safety devices of escalators or moving walkways
• B66B 23/00 - Component parts of escalators or moving walkways