2.20.9 Suspension Member Fastening
(2) the member socketing shall be such as to develop at least 80% of the ultimate breaking strength (minimum breaking force) of the strongest member to be used in such fastenings
(b) They shall be by individual wedge rope sockets conforming to 22.214.171.124.
(c) They shall be by individual wedge noncircular elastomeric-coated steel suspension member sockets conforming to 126.96.36.199.
(d) They shall be from the same manufacturer and type for any one dead-end hitch plate.
(a) Socket components shall be of rolled steel construction having an elongation of not less than 20% in a gauge length of 50 mm (2 in.).
(b) The factor of safety of the weld and heat-affected zone shall not be less than 12.
(c) Welding shall be performed by welders qualified to 8.8.1.
(d) Welds shall conform to 8.8.2.
Where the connection of the two parts is threaded, the thread design, tolerance, and manufacture shall conform to the requirements of ASME B1.13M, M-6H/6g, or equivalent, coarse or fine threads (ASME B 1.1, UNC or UNF Class 2A and Class 2B threads). The thread size and the length of the thread engagement of the rod in the socket shall be sufficient to ensure that the engaged members are aligned and that the strength requirements of 188.8.131.52.7 are met. In addition, means shall be provided to restrict the turning of the rod in the socket and prevent unscrewing of the connection in normal operation.
Eye bolts used as connections with clevis-type sockets shall be forged steel conforming to ASTM A668, Class B (heat treated), without welds.
Figure 184.108.40.206 Tapered Rope Sockets
NOTE: (1) Rope socket and shackle rod may be in one piece, as shown (unit construction], or the socket and rod may be separate (see 2.20,9.3).
Table 220.127.116.11.5 Relation of Rope Diameter to Diameter of the Small Socket Hole
|SI Units||Imperial Units|
|Nominal Rope Diameter, mm||Maximum Diameter of Hole, d', mm||Nominal Rope Diameter, in.||Maximum Diameter of Hole, d', in.|
|8 to 12 inclusive||2.5 larger than nominal rope diameter||5/16 to 7/16 inclusive||3/32 larger than nominal rope diameter|
|13 to 19 inclusive||3 larger than nominal rope diameter||1/2 to 3/4 inclusive||1/8 larger than nominal rope diameter|
|22 to 29 inclusive||4 larger than nominal rope diameter||7/8 to 11/8 inclusive||5/32 larger than nominal rope diameter|
|32 to 40 inclusive||5 larger than nominal rope diameter||11/4 to 11/2 inclusive||3/16 larger than nominal rope diameter|
Figure 18.104.22.168 Wedge Rope Sockets
NOTE: (1) Rope socket and shackle rod may be in one piece, as shown (unit construction), or the socket and rod may be separate (see 22.214.171.124).
(a) Each socket shall be permanently and legibly marked or color coded to identify the corresponding wedge, or wedges, and rope size and material to be used in the assembly. The markings shall be visible after installation.
(b) Each wedge shall be permanently and legibly marked or color coded to identify the corresponding socket, or sockets, and rope size and material, within which it is to be inserted to form an assembly. The markings shall be visible after installation.
(a) Physical Properties. The thermoset resin composition shall have the following properties:
(1) Uncured (Liquid) Material
(-a) Viscosity of Resin-Catalyst Mixture. The viscosity of the resin-catalyst mixture shall be sufficiently low to permit rapid, complete saturation of the rope rosette in order to prevent entrapment of air.
(-b) Flash Point. All components shall have a minimum flash point of 27°C (80°F).
(-c) Shelf Life. All components shall have a minimum shelf life of 1 yr at 21°C (70°F).
(-d) Pot Life and Cure Time. After mixing, the resin-catalyst mixture shall be pourable for a minimum of 8 min at 21°C (70°F) and shall cure within 1 h after hardening. Heating of the resin mixture in the socket to accelerate curing shall follow the resin manufacturer's instructions.
(2) Cured Resin
(-a) Socket Performance. Resin, when cured, shall develop sufficient holding strength to solvent-washed wire in wire rope sockets to develop 80% of the ultimate strength of all types of elevator wire rope. No slippage of wire is permissible when testing resin-filled rope socket assemblies in tension; however, after testing, some seating of the resin cone shall be permitted to be apparent and is acceptable. Resin terminations shall also be capable of withstanding tensile shock loading.
(-b) Shrinkage. The volumetric shrinkage of fully cured resin shall not exceed 2%. The use of an inert filler in the resin is permissible.
(-c) Curing. The resin-catalyst mixture shall be capable of curing either at ambient [16°C to 38°C (60°F to 100°F)] or elevated temperatures. At temperatures below 16°C (60°F), an elevated-temperature cure shall be used.
(b) Materials Required. The thermoset resin composition intended for elevator wire rope socketing shall be supplied in two parts consisting of preweighed resin and preweighed catalyst, each packaged separately within a kit. Each kit containing the thermoset resin composition shall consist of the following:
(1) preweighed thermoset resin
(2) preweighed catalyst
(3) necessary materials for mixing and pouring
(4) detachable label on resin container
(c) Marking of the Resin Container. The label on the resin container shall show the following information:
(1) product name
(2) part designation (e.g., "Part A" or "Resin")
(3) manufacturer's name or trademark and address
(4) mixing instructions
(5) ICC information
(6) safety warnings and cautions
(7) packaging date
(8) flash point
(9) shelf life
(10) storage instructions
(11) curing instructions
(12) net weight
(13) a statement certifying that the product conforms to 126.96.36.199.2 of ASME A17.1/CSA B44
(a) product name
(b) part designation (e.g., "Part B," "Catalyst," or "Hardener")
(c) manufacturer's name or trademark and address
(d) safety warnings and cautions
(e) flash point
(f) storage instructions
(g) net weight