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1、INTERNATIONAL STANDARD IS0 9192 First edition 1991-03-01 Lawn and garden ride-on (riding) tractors - One-point tubular sleeve hitch Tracteurs de jardin et de pelouse 6 conducteur port lawn and garden trac- tor; turf (riding) tractor: Self-propelled machine on which an operator rides, designed primar
2、ily for cut- ting grass and auxiliary garden work. The cutting means may be an integral part of the machine or suspended from or attached to the machine. ) 2.2 General (see figure 1) 2.2.1 hitch point 0: a) Pivotal point of connection of hitch to tractor. b) Actual point of connection to tractor whe
3、n im- plement is attached. 2.2.2 Implement yoke 0: Clevis-shaped part at- tached to implement, constructed to fit loosely to hitch tube and secured by hitch pin. 2.2.3 implement connection point 0: Connection between the hitch and implement. 2.3 Hitch components (see figure 1 and figure 2) 2.3.1 hit
4、ch pin 0: Pin that connects implement to the hitch. 2.3.2 hitch tube 0: Tube portion on the hitch which receives the implement yoke. 2.3.3 hitch bail 0: Portion of the hitch assembly containing hitch tube, stabilizer bolts, and holes for connection to tractor frame at hitch point. 2.3.4 stabilizer b
5、olt 0: Bolt that is used for adjust- ing clearance between hitch bail and implement yoke. 1) For the convenience of the user of this International Standard, this definition is repeated from IS0 5395:1990 (definition 1.3.40). Copyright International Organization for Standardization Provided by IHS un
6、der license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:05:48 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9192:1991(E) Figure 1 - Typical one-point tubular sleeve hitch 2 Copyright International Organization for Standardizat
7、ion Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:05:48 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9192:1991(E) 2.4 Hitch dimensions (see figure 2) 2.4.1 lift range: Range of vertical adjustment
8、plus the power range. Adjustment may be provided in the lift linkage, hitch point or both. 2.4.2 power range: Total vertical movement of the hitch measured at the hitch tube and excluding any vertical adjustment in the hitch lift linkage. 2.4.3 attaching pointltyre clearance: Horizontal di- mension
9、between the centreline of the hitch tube Hitch and the outside diameter of the tractor tyre when the hitch is lowered. 2.4.4 Implement levelling: Means provided for ad- justing the implement for level operation while working, generally accomplished by adjustments built into the implement where requi
10、red. Levelling may also be provided within the adjustment of the lift linkage and hitch point. 2.4.5 attachment: Optional assembly of compo- nents that can be mounted on a lawn and garden ride-on (riding) tractor for a specific use. Hitch bail Stabilizer bolts pi, / ,- Attaching point Rear axle poin
11、t 1 s- Hitch tube xti,w I (GRP = Ground Reference Plane) 254 mm lowered position J Figure 2 - Hitch and yoke dimensions 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:05:48
12、 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9192:1991(E) 3 Dimensions 6 Stabilizer bolts 3.1 Implement Dimensions relating to the implement shall be as given in figure 2 and table 1. NOTES 1 Means should be provided in implement design to al- low levelling of imple
13、ment when at its normal working depth. 2 When implement mass adversely affects the lengthwise stability of the tractor, front end ballast should be made available and its use recommended. Table 1 - implement dimensions Dimensions in mllllmetres Dimension Symbol Measurement min. max. k Centre of hole
14、 to inside edge 32 36 45 Hole diameter - 2 holes In line 17 18 I7 Vertical depth inside 90 92 b Width 100 ) - t Thickness 62) 13 1) 100 mm min. dimension applies only to Implements re- quiring side stabilization. 2) Recommended thickness. 3.2 Tractor Dimensions relating to the tractor hitch shall be
15、 as given in figure2 and table2. 4 Tractor lift force capacity A minimum lift force of I,8 kN shall be available at the implement-attaching point. 5 Manual lift effort In addition to the dimensional requirements speci- fied in table2, locking means, e.g. jam nuts, should be provided. Table 2 - Tract
16、or hitch dimensions Dimensions In millimetres Symbol Measurement hl 4 2 4 4 4 4 L2 I h2 iltch point: Vertical height from ground, (200 recommended) Horlzontal distance from centrellne rear axle - rearward - forward iitch pin: Dlameter Stralght portlon length iitch tube: lnslde dlameter Outside diame
17、ter Length :entre of hitch tube to rear of jail Lift range: Recommended - only lnclud- Ing power range Power range: Vertical travel from top of hitch tube when top of hitch tube Is 254 mm from ground when lowered Stablllzer bolts (see also clause 6): Dlameter Adjustment Spacing Attaching polnt tyre
18、clearance Dim min. Ion nax. 180 230 250 75 15 16 130 - 17 25 62 16 66 26 140 90 15 12 60 75 - 70 Lift handle effort should not exceed 180 N. 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale
19、, 04/26/2007 19:05:48 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9192:1991(E) Annex A (informative) Bibliography I IS0 5395:1990, Power /awn-mowers, /awn frac- tors, lawn and garden tractors, professional mowers, and lawn and garden tractors with mowing attachments
20、 - Definitions, safety re- quirements and test procedures. 3) IS0 9191:1991, Lawn and garden ride-on (rid- ing) tractors - Three-point hitch. 4 IS0 9193:1990, Lawn and garden ride-on (rid- ing) tractors -.Power take-off. 23 IS0 9190:1990, Lawn and garden ride-on (rid- ing) tractors - Drawbar. 5 Copy
21、right International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:05:48 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9192:1991(E) UDC 631.372:629.1 .013.8 Descripto
22、rs: agricultural machinery, horticultural machinery, power horticultural machinery, tractors, couplings, specifications, dimensions, definitions. Price based on 5 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:05:48 MDTNo reproduction or networking permitted without license from IHS -,-,-