摘要:
As drive shoe assembly (50) for a transportation system in which transport units (31) are propelled along a path by frictional engagement of the drive shoe assembly (50) by a drive assembly (36). The drive shoe assembly (50) includes frame members (54) and a plurality of resiliently flexible traction members (52) disposed therebetween defining a resiliently flexible traction surface (60). The traction surface (60) is coupled to the frame members (54) and, further, is positioned to be frictionally engaged by a plurality of drive wheels (36) in a sequence situated along the path to propel the transport unit (31) forward. Upon engagement between the drive wheels (36) and the traction surface (60), the resilient traction surface (60) is sufficiently deflected such that any ice accumulation on the resilient members (52) will crack and fall away. The resilient traction surface (60) allows the use of solid tires (36), affords damping against lateral swinging of the units (31), and accommodates acceleration and deceleration without tire-shoe slipping. A method of avoiding detrimental ice build up on drive shoes, as well as lateral swing damping, acceleration accommodation, and tire wear reduction.
摘要:
A people mover system (110) comprising an elevated track (112) having a horizontal section (114) and vertical end sections (116, 118) and a passenger car (124) movably carried on track (112). Horizontal track section (114) is elevated above an intersection or roadway (140) a height sufficient to permit vehicular traffic to pass beneath car (124). A drive mechanism is provided extending along track (124) for propelling the passenger car in both vertical and horizontal directions between a first load/unload point (120) and a second load/unload point (122).
摘要:
A cable tensioning apparatus and method for automatically maintaining and adjusting the tension forces in an endless cable for a ski lift, aerial tramway, etc. is disclosed. The apparatus includes a carriage on which the cable is carried, a pneumatic carriage displacement apparatus in the form of a piston and cylinder, a source of gas under pressure, and a regulator and relief valve connected to establish and maintain a pressure within the cylinder which falls between predetermined minimum and maximum pressures. As the aerial tramway is subject to passenger or cargo loading and ambient conditions which change the tension forces, the pressure in the pneumatic cylinder will vary within the preselected range, and upon a change in the tension force beyond the range, gas is automatically exhausted from or interjected into the pneumatic cylinder to maintain tension forces within the preselected range.
摘要:
A grip assembly and method for detachably mounting a chair, gondola or the like to a movable cable is disclosed. The grip assembly includes a movable jaw, spring biasing means coupled to bias the jaw to a closed position, and jaw actuating means in the form of opposed toggle joints coupled to move the jaw between open and closed positions upon the application of equal, opposite and aligned forces to knee portions of the toggle joints. A mechanism for applying the actuating forces to the grip assembly is also disclosed.
摘要:
A positive cable derailment sensing apparatus and method for use with pulley means having a cable carried thereby to detect derailment of the cable from the pulley means is disclosed. The sensing apparatus includes a flexible tendon secured to a low inertia component of the pulley means, usually a pivotally mounted yoke carrying a pair of pulleys, and secured to spring biasing means to bias the low inertia component for movement upon derailment of the cable from the pulleys. The flexible tendon normally extends from the pulleys to a remote position which is protected or shielded from adverse environmental conditions. Sensing means is located at the remote protected location and formed to sense movement of the flexible tendon and stop the advancement of the cable over the pulley means upon derailment. A switch construction particularly well suited for sensing the derailment of either side of the looped cable of the type found on chairlifts or the like is also disclosed.
摘要:
An aerial tramway having a pair of side-by-side, substantially parallel, movable haul ropes and at least one load carrying unit attached between the haul ropes for advancement therewith. A plurality of detachment assemblies are positioned periodically along the course of the haul rope to detach the load carrier from at least one of the haul ropes and thereby relieve torque induced in the load carrier due to differences in haul rope speeds. The load carrying units preferably have grip assemblies which wedge against the haul ropes, and detachment wheels lift the load carrier unit and grip assemblies up off the haul ropes to effect detachment. A method of conveying load carrying units by side-by-side haul ropes which prevents torque build-up in the units also is disclosed.
摘要:
A drive-shoe assembly (30) and method for accelerating/decelerating a carrier unit (14) along a rail (12) or the like. The drive-shoe assembly (30) includes a rigid shoe segment (36) which frictionally engages the adjacent acceleration/deceleration drive wheels (22) operating at different speeds, and a movable segment (38) which supports the weight of the carrier unit (14) yet does not impart any significant velocity to the carrier unit (14). The movable segment (38) includes a plurality of roller elements (35) which are in rolling contact with higher or lower speed drive wheels adjacent to the drive wheels (22) controlling the carrier unit velocity so as to minimize drive wheel wear and insure smooth carrier unit acceleration.
摘要:
A haul rope grip assembly for an aerial tramway is disclosed which is suitable for both detachable and permanent gripping of the tramway haul rope. The assembly includes a gripping head having a pair of relatively spaced apart converging haul rope gripping surfaces oriented for gravity biasing of the surfaces into wedging engagement with the haul rope under loading of the grip. Additionally, the assembly includes a jaw positioned proximate the surfaces and formed to apply supplemental force to the haul rope in a direction tending to further wedge the haul rope between the gripping surfaces. The jaws are also formed to unwedge the haul rope upon movement from a closed to an open position. In the detachable grip assembly, a pair of independently movable jaws pivotally mounted and actuated by levers are biased closed with leaf springs that are spaced apart to allow for a hold down sheave. In the permanent grip assembly, the wedging surfaces are further oriented to increase wedging as the grip passes around a horizontal bull wheel. The method of securing a grip assembly to an aerial tramway haul rope is also disclosed.
摘要:
A friction-based, motion damping assembly for a chairlift or the like is disclosed in which the damping assembly is mounted between a hub provided on a cable grip assembly and the chairlift hanger arm. The improved damping assembly is formed as a sleeve mounted to the hub of the cable grip with concentric rubber block members mounted around the sleeve. The hanger arm is formed with a collar having tapered surfaces, and an axially displaceable nut on the hub is used to wedge the rubber blocks into radial compressive engagement of the sleeve to generate the necessary compression of the sleeve about the hub for frictional damping.
摘要:
A cable derailment responsive apparatus for use in terminating the operation of a cable drive for a chairlift, ski lift, gondola or the like is disclosed. The apparatus includes a spring biasing a portion of the pulley assembly for movement if the cable jumps the sheaves, further includes an electrical circuit having a plug-in connector that is mechanically pulled apart from the remainder of the circuit upon cable derailment to interrupt or deactivate the cable drive. Upon remounting of the cable on the sheave assemblies, the connector can be plugged back into the circuit to permit driving of the cable.