摘要:
A cable (10) for wire saw comprises a multi-strand steel cord (20) wherein the steel cord (20) is coated with a second polymer material (30). The steel cord (20) comprises at least one core strand (40) and plurality layer strands (50), while the core strand (40) is coated with a first polymer material (60) before the construction of the steel cord (20). The fine polymer coatings (60,30) on the core strand and the steel cord not only prevent the corrosive and abrasive cooling water from entering into the cable, but also maintains the flexibility of the cable to endure the constant change bending load during the sawing operation. A wire saw and a spring loaded diamond bead wire saw comprising a cable incorporating present invention are also provided.
摘要:
The present invention relates to a multi-filament product (10). The multi-filament product (10) comprises filaments (16) having a copper alloy core (12) with annealed microstructure and a first steel layer (14) with drawn microstructure. Furthermore, the filaments in the multi-filament product are coated with an electrical isolation coating (46). The present invention also relates to the use of the multi-filament product as heating element. The multi-filament product presents good conductivity, durability and strength.
摘要:
Stranded composite cables include a single wire (2) defining a center longitudinal axis, a first multiplicity of composite wires (4) helically stranded around the single wire in a first lay direction at a first lay angle defined relative to the center longitudinal axis and having a first lay length, and a second multiplicity of composite wires (6) helically stranded around the first multiplicity of composite wires in the first lay direction at a second lay angle defined relative to the center longitudinal axis and having a second lay length, the relative difference between the first lay angle and the second lay angle being no greater than about 4°. The stranded composite cables may be used as intermediate articles that are later incorporated into final articles,, such as overhead electrical power transmission cables including a multiplicity of ductile wires stranded around the composite wires. Methods of making and using the stranded composite cables are also described.
摘要:
Elevator system, comprising (a) a tension member for providing lifting force to a car, the tension member, being in engagement with a rotatable traction sheave; (b) wherein the tension member includes a plurality of spaced metallic load carrying cords within a coating layer formed from a non-metallic material; (c) wherein the tension member has a ratio of width w relative to thickness t, greater than 1; and (d) wherein the cords each are formed of metallic strands in such a manner that the coating layer fills spaces between adjacent strands.
摘要:
A tension member (22) for an elevator system (12) has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure and an increased flexibility as compared to conventional elevator ropes. As a result, smaller sheaves (24) may be used with this type of tension member (22). In a particular embodiment, the tension member (22) includes a plurality of individual load carrying ropes encased within a common layer of coating. The coating layer (28) separates the individual ropes (26) and defines an engagement surface (30) for engaging a traction sheave (24).
摘要:
A tension member (22) for an elevator system (12) has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure and an increased flexibility as compared to conventional elevator ropes. As a result, smaller sheaves may be used with this type of tension member (22). In a particular embodiment, the tension member includes a plurality of individual load carrying ropes (26), formed from metallic material encased within a common layer of coating. The coating layer (28) separates the individual ropes (26) and defines an engagement surface for engaging a traction sheave (24).
摘要:
The invention relates to a wire cable (12) which is produced by producing the wires already in the cable configuration by layer construction. Preferably, the wires are already formed onto terminal couplings. The wire cable (12) so produced is suitable for specific purposes only. It is advantageous in that it is not influenced by variations in quality of the starting product or by variations in manufacturing parameters. The inventive wire cable (12) is used for applications where short cables are required and where their absolute regularity can be made use of. An important field of application of the inventive method is the production of samples for obtaining background data required for optimizing wire cable construction. According to the inventive method, samples of identical basic cable structure but different wire diameters and/or lay lengths of strands, a core wire and/or the cable are produced and the characteristic features of interest are determined. In the tests, different absolute values are found. However, the values in relation to each other show influences of geometry, i.e. wire diameters and lay length modifications. A comparison with samples produced according to conventional manufacturing methods can be used to find correctional variables which can be taken into consideration when required.
摘要:
The elevator system (10) includes a hoistway (12) which is defined by a surrounding structure (14) . An elevator car (16) and counterweight (48) are located in the hoistway, and a drive motor is located between the elevator car and a sidewall of the hoistway. The drive motor drivingly couples and suspends the elevator car and counterweight via at least one flat rope or belt.
摘要:
A counterbalancing self-running elevator related to present invention includes: a car and a counterweight moving up and down in a hoistway, a wire rope for hanging the car and the counterweight, a return pulley, disposed at the top of the hoistway, for hanging the wire rope, fixing members for fixing each end of the wire rope, and a drive machine that is installed on the counterweight, and hanged by the wire rope, for moving the car and the counterweight up and down, wherein the wire rope is made of a resin-coated steel coated with a resin having a high frictional coefficient.
摘要:
An elevator system (10) has multiple machines (18, 20) and flat ropes (16) is disclosed. In one embodiment, the machines (18, 20) are engaged in a series manner with a single set of ropes (16) to drive the car (12) and counterweight (14). In another embodiment (Fig 2), each machine is engaged with a separate set of ropes to drive the car and counterweight.