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है”ह”ह

IS 11033 (1984): Animal Drawn Potato Digger, Ridger Type[FAD 21: Farm Implements and Machinery]

IS:11033 -1984

Indian Standard SPECIFICATlON FOR

ANIMALI~RAWNP~TATOD~GGER, RIDGERTYPE

Harvesting and Threshing Equipment Sectional Committee, APTX 5 1

Chairman

DR S. R. VE;‘HMA

Members

DR L. N. SEUKLA (Alternate to Dr S. R. Verma )

SHRI BEUPENDRA

SEW CHANDRA MOHAN SHRI G. S. RIVAL ( Alternala )

SHRI K. S. Dxv

SHRI N. K. Dn.4~u ( AItem& j SHRI M. R. DLWAN

SILHI J. PHA~AD ( A21trnata ) SHRI N. D. DHIMAN

Repesentirrg

Punjab Agricultural Universny, Ludhiana

National Agricultural Cooperative Marketing Federation of India Ltd, Delhi

Punjab Tractors Limited, Ropar

Standard Agricultural Cnginccring Company, Ludhiana

Central Farm Machinery Training & Testing Institute ( Ministry of Agriculture ), Budni (MP)

Vishiv Karma Folmdry ( Rcgd ), Phillaur 1 SHRI V. K. DI~IMAN ( Altcrnatc ,

DIRECT~I~ Northern Region Farm Machinery Training & Testing Institute ( Ministry of Agriculture ), Hissar

Smixon TESY ENGINEER ( Altcrnntc ) Smu R. C. Goes Department of Agriculturr, Government of Uttar

Pradesh, Lucknow SHRI c. s. SlIARiWA ( Alternate )

SHRI J. P. GUPTA Department of Agricu’lturc, Government of Punjab, Chandigarh

SHBI HAIZBEAJAN SINGET (Alternate ) SHBI R. K. GUPTA

SHRI M. L. GARG ( Alternate ) State Farms Corporation of India Ltd, New Delhi’

SHRI J. S. HARA In personal capacity ( Village Kanganwal, P. 0. Jogia~la, Distf Ludhiann)

SHRI INDERJIT Srwon Union Forgings, Ludhiana SHRI PA~AMJIT SINCH ( Alternate )

( Continued on page 2)

0 Copgrighl 1984 E

INDIAN STANDARDS INSTITUTION

This publication is protected under the Zndian Copyr:gllt Act (XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

IS:11033 -1984

i\4embcrs

SHRI JAOOIIUI CHAWlCit SHRI V.P.S.KAIHYAP

Ds I;. N. NAQ DR T. P. OJH.4

UR R. S. DNVNANI ( Alternate )

Dn J. S. PANWAR

Representing

Union Tractor Workshop, New Delhi Department of Agriculture, Government of

Haryana, Chandigarh Mohan La1 Sukhadia University, Udaipur Central Institute of Agricultural Engineering

, ICAR ), Bhopal

Indian Agricultural Research Inrtitute ( ICAR ), New Delhi

Jyoti Limited, Vadodarn

Haryana Agro-Industries Corporation Ltd.

Sent M. M. Kolrl.r ( Altcm~~c j

Chandigarh

SHRI M. R. .~HLAVA l<AO Vicon Limited, Bangalore SHRI M. L. KEISHNA MURTHY ( Alternate )

Skiilt~ Rr~na~rm SINQH Escorts Limited, Faridabad SRRI N. L. K. MALHOTBA ( Alternate )

SHRI GURMIT SINCJH SEIXMBEY Jodhsingh Sehmbey & Song, Goraya SRI~I SANJI~XV Kuma~ ( i’i~terrlatc )

Da K. N. S~NQ~L Govind Ballahh Pant University of Agriculture &

PH~F BHAQWAN SINQH (Mlerrrclle ) Txhnology, Pantnagar

SHRI v. K. SINGIL ESPI ( New Delhi ) Trading Company, New Delhi

SHRI R. B. L. SRIVASTAVA U. P. State Agro-Industrial Corporation Ltd, Lucknow

SHRI S. N. SlrIV.4SrTAVA Ministry of Agriculture ( Department of

SEIRI T. PUBNANANDAX, Agriculture St Cooperation ), New Delhi

Director ( Agri & Food ) Director General, IS1 ( Ex-o$cio Mmhr )

Sscrrtnrv SHRI K. ANRARASU

Assistant Director ( Agri & Food ), ISI

IS : 11033 - 1984

Indian Standard SPECIFICATION FOR

ANIMAL DRAWN POTATO DIGGER, RIDGER TYPE

0. FOREWORD

0.1 This Indian Standard was adopted by the Institution on 20 July 1984, after the draft finalized and Threshing Equipment Sectional Committtee had the Agricultural and ‘Food Products Division Council.

lndian Standards b>* the Harvesting been appro\-et1 by

0.2 Potato is one of the important cash crops of our country and for digging potatoes in the fields, animal drawn diggers are widely used. A need, therefore, was felt to prepare an Indian Standard on the subject to guide the manufacturers and the users in production and purchase of quality potato diggers.

0.3 In the preparation of this standard, assistance has been obtained from the Central Potato Research Station, Jalandhar.

0.4 Potato diggers are generally of ridaer and sweep types. This standard covers the requirements of the ridr,er type only. The standard on sweep type would be prepared at a later stage.

0.5 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-l%O*. The number of significant places retained in the rounded off value should he the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard specifies material, constructional perfornlance and other requirements for ridger type animal drawn potato digger.

‘Rules for rounding off numerical values ( mired ‘.

3

IS : 11033 - 1984

2. TERMINOLOGY

2.OiFor the purpose of this standard, the following definitions shall apply ( see Fig. 1 ).

HANDLE GRIP

\u =\ / MOULO BOARD

1 SOLE PLATE

---% 1

CLEARANCE

/RUG /HARE POINT

;

B ANGLE Od jVER,ICAk SUCTION

PENEIRAIION

FIG. I POTATO DIGGER, RIDGER TYPE

4

16:11033- 1984

2.1 Angle of Cut-The included angle formed by the lines joining point of share and wings of share ( see of in Fig. 1 ).

2.2 Angle of Penetration or Lift Angle - The angle of inclination of share in the direction of travel when share is fitted in its working position ( see P in Fig. 1 ).

2.3 Beam -A rigid member which connects the yoke to the plough bottom.

2.4 Potato Digger - An implement to raise potatoes to the surface of the soil.

2.5 Digger Bottom - An assembly comprising the share, mould board and sole plate which are zutached together with frog.

2.6 Frog -The part to which other components of digger bottom are attached.

2.7 Handle - The part(s) for controlling and manoeuvring the digger.

2.8 Mouldboard Wing - The part which lifts and breaks up the soil and shall be of slat type.

2.9 Mouldboard Brace(s) - The adjustable or fixed part (s) which is attached to the back of the mouldboards to provide them support.

Nora - The adjustment brace(s) also help in controlling th<a effective width of digging.

2.10 Share - The part which penetrates into the soil and makes cut below the surface.

2.10.1 Cleavage Edge - The rear edge of the share which joins mouldboard and share.

2.10.2 Cutting Edge - The front edge of the share which cuts the soil.

2.10.3 ls’dge Clearance - The maximum clearance between the cutting edge and the straight line joining the point of share and wing of share.

2.10.4 Point of Share - ‘The leading end of the cutting edge which facilitates the penetration of share into the soil. This may be integral or detachable.

2.10.5 Wing of Share - The rear end of the cutting edge of the share.

5

IS : 11033 - 1984

2.11 Working Width - The horizontal distance between the outside ends of the mouldboards, expressed in mm.

Nom -- In case of mouldboards fitted with adjustable brace( s ) the maximum and minimum width shall br indicated.

2.12 Sole Plate - The part which slides against the bottom providing stability to it during operations. This is also known as sliding shoe.

2.13 Throat Clearance - The perpendicular distance bet\veen point of share and lo\vcr side of beam.

2.14 Standard or Shauk - The part connecting the digger bottom to the beam.

2.15 Vertical Suction - The maximum clearance under the land side and horizontal surface when the digger is resting on a horizontal surface in the working position.

2.16 Handle Hook - A hook attached to the handle for tying rope.

3. MATERIAL

3.1 The material of construction of share body, share and land side shall be chilled cast iron ( see nlso 4.1 ) or steel conforming to Grade 75 C6 of IS : 1570 ( Part 2 )-1979*. The chemical composition of Grade 75 C6 is as under:

a) Carbon 0.70 to 0’80 percent

b) Maganese 0.50 to 0.90 percent

c) Sulphur 0.05 percent, Max

d) Phosphorus 0.05 percent, Max

3.1.1 Any other material having characteristics equivalent to or better than this may also be used.

3.2 The material of construction for components other than those specified in 3.1 shall be cast iron preferably conforming to Grade FG 200 of IS : 210-1978.t or mild steel, preferably conforming to IS : 226-1975$ or IS : 1977-1975s. Well-seasoned hard timber ( see IS : 399-196411 ) may also be used for beam, handle and handle grip.

*Schedules for wrought steels for general engineering purpose : Part 2 Carbon steels ( unalloyed stevls ) (JirSt fcvision ).

tspkfication for grey iron castings ( second rruisian ).

fSpecification for structural steel ( standard quality ) ( JFflh rrrGzkz ).

$Specification for structural steel ( ordinary quality ). /]Classification for commercial timber and their zonal distribution ( re&cd j.

fi

IS : 11033 - 1984

:3.3 The components along with their material of construction shall be ‘declared by the manufacturer.

4. HARDNESS

4.1 Cast iron used for different components, other than share body, share and land side, shall have the hardness in range of 160 to 220 HB ( J/X IS : 1789-1961” ).

4.2 The chilled cast iron parts shall have hardness in range of 360 to 400 HB ( when tested in accordance with IS : 1789-196 I * ) up to a distance of 50 mm from cutting edge; depth of chilling shall be not less than 1.5 mm.

4.3 The steel share including detachable share point and sole plate knife shall have hardness in range of 350 to 450 HB when tested in accordance with IS : 1500-1968f up to a distance of 50 mm from the cutting edge.

5. DIMENSIONS

5.1 The working width of the digger shall be adjustable between 450 to 600 mm.

NOTE -The adjustment of the diverging wings or curved bars attached to the mouldboard far separation and c~xposure of potatoes may be varied as per requirement.

5.2 The vertical suction shall be declared by the manufacturer.

5.3 When the digger is set at its working position, the throat clearance shall be in the range of 250 to 500 mm.

5.4 When the digger is set at its working position, the vertical distance between the ground and the centre of the grip shall be adjustable. The distance shall lie between 900 and 1 100 mm.

5.5 The handle grip shall be circular or oval in cross section. The ,diameter or minor axis shall be between 25 and 30 mm. The length of the grip shall be not less than 125 mm. the handle shall be from 100” to 105”.

The angle between the grip and

5.6 The cutting edge of the share shall be bevelled to a distance between 5 and 10 mm. The thickness of the cutting edge should be

*Method for Brine11 hardness test for grey cast iron,

tMethod for Brine11 hardness test for steel (Jirst r&ion ).

7

IS:11033 - 1984

from O-5 to 2 mm. The variation in edge thickness in a share shall be not more than f 0.05 mm.

5.7 The angle of cut and angle of penetration shall be 5” to 15’ and 15” to 30” respectively. The variation from the declared angle shall be not more than f 3” subject to the angle remaining within the specified limit.

6. PERFORMANCE

6.1 When tested in accordance with the method given in Appendix A, the digger shall satisfy the following:

a) Exposure of tubers - 70 percent, Min, and

b) Total damage to the tubers -5 percent, MUX.

NOTE - This requirement shall be tested as type test.

7. OTHER REQUIREMENTS

7.1 All the components should perferably be detachable for ease of replacement.

7.2 The fasteners coming in contact with soil should have coarse thread. The head of the fasteners, coming in contact with soil, shall be flush with the working surface. As far as possible bolt of 10 mm size should be used for all fastenings to facilitate the use of minimum number of tools. Each bolt should have spring or flat washer of appropriate size for better contact.

7.3 The digger shall be symmetrical on both sides along the longitudinal central axis of the digger bottom.

7.4 The mass of the digger includin g beam ( if provided ) shall be not more than 20 kg.

7.5 When the digger is set at its working position and is placed on a plane surface, its bearing points ( point of share and wing of share and heel of land side, if present ) should touch the ground and the digger shall be well-balanced.

8. WORKMANSHIP AND FINISH

8.1 The components of the digger should be free from pits, burrs, cracks and other visual defects. The casting shall be free from blow holes. Welded joints shall not be porous.

8

IS : 11033 - 1984

8.2 The surface of the shall have a protective in transit and storage.

parts of the digger shall be evenly dressed and coating which will prevent surface deterioration

9. MARKING AND PACKING

9.1 Marking - Each digger shall be marked on non-wearing surface with the following particulars:

a) Manufacturer’s name and recognized trade-mark, if any; and

b) Size.

9.1.1 The digger may also be marked with the IS1 Certification Mark.

NOTE -The use of the IS1 Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regulations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS1 and operated by the producer. ISI marked products are also continuously checked by IS1 for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

9.2 Packing -The digger shall be packed as agreed to between the purchaser and the supplier. The packing shall ensure safety of the parts in transit.

10. SAMPLING FOR LOT ACCEPTANCE

10.1 Unless otherwise agreed to between the purchaser and the supplier, the sampling of the digger for lot acceptance shall be done in accordance with 3 of IS : 7201-1974*.

APPENDIX A

( Clause 6.1 )

METHOD OF PERFORMANCE TEST OF DIGGER

A-l. PROCEDURE

A-l.1 Select the field ready for harvesting potatoes.

A-l.2 Hitch the digger with the animal(s). -__

*Method of sampling of agricultural machinery and tractors.

9

A-l.3 Operate the digger for a preliminary run for a few rows and adjust the width and depth. The blade shall be run below the tuber zone.

A-l.4 After preliminary run, operate the digger for 20 rows of minimum 20 m length to expose the tubers. From each row, obtain the following for a distance of 10 m in the middle of rows:

a) Potatoes exposed ( collected by picking exposed potatoes )

b) Total potatoes ( by digging manually, if necessary and picking all potatoes )

c) Damaged potatoes ( damaged means cut, broached or scaled potatoes )

A-2. CALCULATION

a) Exposure percentage by mass = loo x mass.. of potatoes exposed ( collected from all rows )

mass of total potatoes ( collected from all rows )

b) Damaged percentage by mass mass of damaged potatoes ( collected from all rows )

s 100 )( --. __- mass of total potatoes ( collected froG’GX%Z)

10