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1、J UDC 621.863:621.313.333 JAPANESE INDUSTRIAL STANDARD Electric Wire Rope Hoists , Translated and Published by Japanese Standards Association Printed in Japan 12 s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not
2、for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- 7 J I S C*b20 A8 4733608 0 0 3 b 5 In the event of any doubt arising, the original Standard in Japanese is to be final authority. Copyright Japanese Standards Association Provided by IHS under l
3、icense with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- UDC 621.863:621.313.333 JAPANESE INDUSTRIAL STANDARD J I S Electric Wire .Rope Hoists C 9620-1988 I. ScoDe This Japanese I
4、ndustrial Standard specifies electric wire rope hoists which lift or lower the cargo by such means that the drum around which a wire rope is wound is rotated by a three-phase cage rotor induction motor through a reduction gear, hereinafter referred to as the “hoists“. This Standard also applies to h
5、oists capable of traversing. Remark: The units and numerical values given in based on the traditional units and are currently the criteria in force. in this Standard are 2. Definitions For the main terms used in this Standard the definitions in JIS B 0148 apply, and the rest of the terms shall be as
6、 follows: (1) suspension system Such a system that the traversing is done by employing the lower flange of I beam or the like as the rail. (2) top running system Such a system that the hoist traverses riding on the rail attached to the top of the beam. Applicable Standards: JIS B 0148-Glossary of Te
7、rms for Hoists JIS B 2803-Hooks JIS C 0601-Operation of Handles and Indication of Electric Installations JIS C 4004-General Rules for Rotating Electrical Machines JI S C 4504-General Rules for Direct-on-line ( Full-voltage) A.C. Starters JIS C 4520-General Rules for Control Switches for Induction Mo
8、tors JIS G 3525-Wire Ropes Reference Standards: JIS E 1103-Light Rails JIS G 31 gZ-Dirnensions, Weight and Permissible Variations of Hot Rolled I SO 4301 Steel Sections Cranes and lifting appliances-Classification Copyright Japanese Standards Association Provided by IHS under license with JSALicense
9、e=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*b20 88 4933608 0039973 3 Rated load kN tf 2 C 9620-1988 2.5 (0.25) 5 (0.50) 10 (1.0) 20 (2.0) 30 (3.0) 50 (5.0) 75 I7.5) 100 (10) 150 (1
10、5) 200 (20) 300 30) (3) total full-load current The total sum of the motor current at the time of hoisting or traversing with the rated load suspended, the current of the magnetic brake and the current of the electromagnetic switch which are acturally measured. 3. Classification 3.1 Classification A
11、ccording to Rated Load and Lifting Height The classification according to rated load and lifting height shall be as given in - Table 1. Table 1. Classification by Rated Load and Lifting Height Lifting height m 4 6 8 12 3.2 Classification According to Type The classification according to type of hois
12、t shall be as given below. The shapes in Figures show an example. Suspended type (Fig. 1) - Placed type (Fig. 2) (i) Stationary system Normal type (Fig. 3) Low head room type (Fig. 4) Double rail type (Fig. 5) (3) Top running system - - (2) Suspension system Copyright Japanese Standards Association
13、Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*b20 88 4933b08 0039972 5 3 C 9620-1988 Fig. 1. Stationary System Suspended Type Fig. 3. Sus
14、pension System Normal Type Fig. 2. Stationary System Placed Type Fig. 4 . Suspension System Low Head Room Type Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or
15、 networking permitted without license from IHS -,-,- JIS C*b20 88 W q33bO8 0039973 7 4 C 9620-1988 Fig. 5. Top Running System Double Rail Type 3.3 Classification According to Traverse Driving System The classification according to traverse driving system shall be as follows: (i) Motor driven travers
16、e (2) Chain driven traverse (3) Manually pushed traverse 4. Ratings 4.1 Rated Voltage and Rated Frequency The rated voltage and rated frequency of hoists shall be 200 V 50 Hz, 200 V 60 Hz or 220 V 60 Hz. 4.2 Rating of Hoisting Motor The rating of hoisting motors shall be short-time rating or intermi
17、ttent rating. (1) Short-time Rating The short-time ratings shall be as given in Table 2. Table 2. Short-time Rating Unit: min Short-time rating I 15 30 60 (2) Intermittent Rating The intermittent ratings shall be as given in Table 3. Copyright Japanese Standards Association Provided by IHS under lic
18、ense with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS C*9620 88 4933b08 0039974 9 E Intermittent rating class I II III Percentage duty cycle %ED 15 25 40 Maximum number of st
19、arts Starts/h 90 150 240 5 C 9620-1988 IV 60 360 Table 3. Intermittent Rating 4.3 Rating of Traversing Motor The rating of traversing motors shall be short-time rating or intermittent rating. (1) Short-time Rating The short time ratings shall be as given in Table 2. (2) Intermittent Rating The inter
20、mittent ratings shall be as given in Table 3. 4.4 Grading The hoists shall be graded as denoted by the grade symbols given in Table 4 according to the rate of loading and the operating hour, such mechanical parts as gears and bearings being the object. Copyright Japanese Standards Association Provid
21、ed by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*9b20 88 W 4933608 O039975 O W 6 C 9620-1988 k O 0 $2 m a C k m a Z 0 I a3 E I h E : O m o .r( r a
22、d 2 % Y ? % VI d o E : (d a .r( d M d .r( 3 d P E : m Iu E c u Y 4 O m * O 2 + I O 8 5 O m o c , E : a 4 2 4 .r( z! E m Co d O J2 VI 5 !i 3 a , -0 a , c b E lx P- E a3 E CD E P- E I n E CD E 8 3 *; 8N M * E E N m I n E * E E =I m E * E rl N E E a 5 2 o c 0 3 * N E M E rl I E ,g$ c, y a, 2 h 7 m 2 Co
23、pyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS C*b20 88 4933608 003997b 2 m 20 to 30 50 75 100 to 200 k
24、N tf) (0.25 to 1.0) (2.0 to 3.0) E5.0) (7.5) (10 to 20) Rated load 2.5 to 10 10 max. 9 max. 8 rnax. 6 max. Lifting speed 14 max. m/min 7 C 9620-1988 4.5 Lifting Speed and Traversing Speed The lifting speeds and traversing speeds, if motor traversing, at the rated load shall be as given in Table 5. 3
25、00 C30) 4 max. Table 5. Lifting Speed and Traversing Speed Traversing speed m/min 50 max. 5. Performances 5.1 Temperature Rise The temperature rise at various parts shall not exceed the appropriate value in Table 6, when tested in accordance with 7.2. The limit of ambient temperature (coolant temper
26、ature) shall be 4OOC. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*b28 88 4933608 O039977 4 8 C
27、 9620-1988 Section Motor winding Electro- magnetic brake coil Gear box Class E insulation Class B insulation Class F insulation Class H insulation Class E insulation Class B insulation Class F insulation Class H insulation Motor bearing Table 6. Temperature Rise Unit: “C I Thermometer method Resista
28、nce method 75 I loo I 125 160 70C when measured at outside l- 40C when measured on the sur- face, 45C when measured by thermometer element embedded into bearing metal. However, if good heat resistant lubricant is used, it is 55C when measured on the surface, and if special heat resistant lubricant i
29、s used it should be agreed upon between the parties concerned with acceptance. 5.2 Lifting and Lowering Speeds The lifting and lowering speeds shall fall within the appropriate ranges given in Table 7 from the respective marked value when subjected to the test of 7.3. Copyright Japanese Standards As
30、sociation Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*b20 88 m 4933608 0039978 b m I Under 2 2 and over 9 C 9620-1988 2 ? 20 % + 25 % t
31、o -20 % t: 10 % + 25 % to -10 % Table 7. Lifting and Lowering Speeds Speed m/min I Lifting 1 Lowering 5.3 Lifting Current The current at lifting shall not exceed the total full load current at lifting, when tested as specified in 7.4. 5.4 Braking Property The braking property shall be as follows: (i
32、) The braking torque (sum of electromagnetic brake torque and mechanical brake torque if both are provided) shall be not less than 150 % of the torque caused by suspension of the rated load. (2) When the brake is tested as specified in 7.5, the distance to stop shall not exceed 1 % of the lifting di
33、stance in 1 min. The brake shall surely hold the load suspended in air, and the position of the load shall not change when the current is interrupted, in the braking test carried out as specified in 7.5. (3) 5.5 Overwinding Protection When the overwinding protection is tested in accordance with 7.6,
34、 there shall be lifting allowance not less than 50 mm. 5.6 Low Voltage Start When the low voltage start is tested as specified in 7.7, the lifting, lowering and traversing shall be possible. 5.7 Lifting Efficiency The lifting efficiency shall have at least the appropriate value given in Table 8, whe
35、n tested as specified in 7.8. hoists with a lifting speed less than 2 m/min or hoists employing special motor are excluded. However, Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24
36、 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S C*9b20 88 = 4933608 O039979 8 10 C 9620-1988 Table 8. Lifting Efficiency Rated load kN tf 1 Lifting efficiency % 40 I 2.5 0.25) 45 I 5.0 0.50) 10 1.0) I I 20 2.0) I 30 3.0) 75 7.5) I 100 (10 ) 55 50 I 150 (15 1 I 200 E2
37、0 ) I 300 (30 1 5.8 Traversing Speed The traversing speed of a hoist of motor traversing shall be not more than 50 rn/rnin and shall fall within a range of & 10 % from the marked value when tested in accordance with 7.9 (i) and (2). 5.9 Traversing Current The current at motor traversing shall not ex
38、ceed the total full-load current at traversing when tested as specified in 7.9 (2). 5.10 Traversing Performance The hoist shall traverse without any trouble, when the traversing performance is tested as specified in 7.9 (1) and (2) on motor driven one, in 7.9 (3j on chain driven one and-in 7.9 (4) o
39、n manually pushed one. 5.1 1 Overload Characteristics When the overload characteristics are tested as specified in 7.10, the specimen shall show no abnormality at any part. 5.12 Dielectric Withstand Voltage When the dielectric withstand voltage is tested as specified in 7.11, the specimen shall with
40、stand the test voltage. 6. Construction 6.1 Construction in General The construction shall, in general, be as follows: Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reprodu
41、ction or networking permitted without license from IHS -,-,- a Diameter mm Under 8 8 and over JIS C*b20 88 m 4933608 0039980 4 m - Classification ( ) 6 x 37 bare Z lay grade A or B 6 x W (19) bare Z lay grade A or B 6 x 37 bare Z lay grade A or B 6 x Fi (29) bare Z lay grade A or B 11 C 9620-1988 Th
42、e lifting device of a hoist shall have such construction that a frame which supports the whole mechanism and a drum which winds the rope are located at the middle, and a motor, reduction gear, electromagnetic brake, overwinding limit switch and the accessories are assembled thereon to form a body, e
43、asily. It shall be robust, shall operate surely and shall be handled The traversing part of a hoist shall consist of a motor, reduction gear, traversing wheel, etc. for motor driven one, of a chain, reduction gear, traversing wheels etc. for chain driven one, and of traversing wheels and others for
44、manually pushed one. Each part shall be robust and shall be easily mounted on the lifting device if it is designed to be integrated. Suspension type ones shall be so constructed that the traversing part does not come out of the traversing rail even if the traversing part causes slipping or inclinati
45、on to the traversing rail. Classification of hoists according to the type of protection shall follow the classification by type of protection specified in 3.2 of JIS C 4004, and the hoist shall satisfy the specified performance, 6.2 Wire Rope The wire ropes specified in Table 9 shall be used, and th
46、e safety factor (1) shall be at least 5. The length shall be such that two or more turns are remaining when the hook reaches the lowest position in the specified range of lift. Note (I) Safety factor (%) = Nominal breaking number of falls load of wire rope Rated load + Own weight of hook block of wi
47、re rope x sheave efficiency I I IWRC 6 x Fi(29)bare Z lay grade A or B Note ( 2 ) This classifications is shown by the combination of various classifications specified in JIS G 3525. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 22:28:24 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS C*7620 ! 4733608 0039981 b 6 strands of 37 wires each 12 C 9620-1988 16 6 x 37 bare Z lay grade A or B 6.3 Drum and Sh