Seeder SZP-3.6: device, technical characteristics, photos and videos


Tractor T-75 A crawler tractor, general purpose, class 3 tons, with mounted, semi-mounted and trailed machines, designed for plowing, sowing, continuous cultivation, harvesting and performing other agricultural work at high speeds. It can be used for road, reclamation and other works, as well as for transporting heavy loads on bad roads.

The tractor is equipped with a four-cylinder four-stroke swirl chamber engine D-75 with a power of 75 hp. With. at 1500 rpm. Specific fuel consumption 200 g/l.h.h. It differs significantly from the D-54 engine in the design of the head vortex chamber, a more rational distribution of cooling water flows, and the size of the intake valve plates.

The gearbox is mechanical, ten-speed, controlled by two levers. Travel speeds (in km/h): forward in first gear 2.14; on the second 2.68;. on the third 3.22; on the fourth 4.00; on the fifth 4.95, on the sixth 5.97; on the seventh 7.07; on the eighth 8.8; on the ninth 10.6; in first reverse gear 1.76; on the second 3.32; on the third 5.86.

Traction effort (in kg): in first, second and third gears no more than 3000; on the fourth 3500 (when overcoming short-term increased resistance); on the fifth 3050; on the sixth 2450; on the seventh 2000; on the eighth 1500; on the ninth 1000.

Hook power when working on stubble in working gears is 56 hp. With. The power take-off shaft is dependent and driven from the input shaft of the gearbox. The track width is 1435 mm. Ground clearance 280 mm. Dimensions (in mm): width 1845; height 2300; length 4190 (with linkage mechanism).

The average specific pressure on the soil for the T-75-S1 modification tractor is 0.44 kg/cm2.

The weight of the fueled tractor modification T-75-S1 is 5960 kg.

The T-75 tractor is a modernized DT-54A tractor. The T-75 tractor has a more powerful engine with electric start from the starting engine, a modified gearbox with a large range of increased speeds, a double-disc clutch, an independent power take-off shaft, a ventilated and heated cabin, a reinforced frame, an electrical equipment system, etc.

The tractor is equipped with a separate hydraulic system.

The T-75 tractor, upon customer request, is supplied in one of the following modifications: T-75-S1—with a dependent power take-off shaft, fully equipped with hydraulic system units, with a main cylinder and a mechanism for hanging implements; T-75-S2 - with a dependent power take-off shaft, fully equipped, like the T-75-S1 tractor, but without the main power cylinder and mechanism for attaching implements; T-75-SZ - with a dependent power take-off shaft and without units of hydraulic and mounted systems; T-75-S4 - with a dependent power take-off shaft, fully equipped, like the T-75-S1 tractor, with mounted system units; T-75-S5 - with an independent power take-off shaft, fully equipped, like the T-75-S1 tractor, with a hydraulic mounted system; T-75-S6 - with an independent power take-off shaft, equipped with a linkage system, like the T-75-S2 tractor; T-75-S7 - with an independent power take-off shaft and without hydraulic and mounted systems, like the T-75-SZ tractor; T-75-S8 - with an independent power take-off shaft, equipped with a linkage system, like the T-75-S4 tractor;

T-75-S9 - with an independent power take-off shaft, equipped like the T-75-S1 tractor, but without the main cylinder and rear linkage.

Recommended for all zones of the USSR. Manufacturer: Kharkov Tractor Plant of the Kharkov Economic Council.

Price 2600 rubles.

AgroFlot.ru November 19, 2010

Source:

Tractor TDT-75: description and technical characteristics

The TDT-75 tractor is a tracked vehicle of the third traction class. Produced by Altai Tractor OJSC, it served as the basis for the creation of modern skidding mechanisms TT-4 and TT-4M.

The machine has sufficient power to transport large and medium-sized wood from felling sites to storage sites in the absence of equipped roads.

Used for loading and unloading packaged wood. The chassis can be used together with trailed and mounted equipment for various purposes.

TDT-75 effectively performs:

  • skidding processing of trunks and whip fragments;
  • moving the trunks with the top back and forth;
  • dragging of cargo, with incomplete and full loading or suspension.

Unit features

  1. Low specific pressure on the soil. Wide caterpillar tracks ensure movement on uneven forest roads, snowy areas, and swampy areas.
  2. A diesel engine, in its time, is quite economical in terms of fuel and lubricant consumption.
  3. The chassis of the machine is universal - special devices used in logging and primary wood processing in off-road conditions are mounted on the platform.
  4. Ground clearance provides sufficient maneuverability on rough terrain.
  5. Increased traction force of the power transmission, high reliability of the chassis.
  6. Metal protection mounted underneath the frame.
  7. The motor installed in the cab does not provide comfortable conditions for the driver.
  8. Compared to the TDT-55 skidder, the maneuverability of the unit in forest conditions is reduced due to its large weight and dimensions.

Technical and operational parameters

An industrial crawler tractor of traction class 75 with bulldozer and loosening equipment is designed for the development of particularly heavy frozen and rocky soils in the mining industry, for performing large volumes of earthmoving work in road construction and in other industries under various climatic conditions. Eliminates drilling and blasting operations during stripping operations.

Technical characteristics of T-75.01 (T-800)

6DM-21T
Manufacturerpipe engine plant Ekaterinburg
Type4-stroke with direct fuel injection, liquid cooled with gas turbine supercharging and intercooling of charge air
Operating power, kW (hp)603 (820)
Rated crankshaft rotation speed, rpm1 500
Number of cylinders6
Working volume, l43,64
Cylinder diameter, mm210
Piston stroke, mm210
Cooling systemliquid
Lubrication systemforced with dry sump
Transmission
Hydromechanical, consisting of a single-stage three-wheel torque converter, cardan transmission and a module consisting of a planetary three-shaft gearbox and rotation, stopping brakes, bevel gear; two-stage onboard gearboxes with a pair of spur gears and a planetary gearset and hydraulic transmission systems. The gearbox provides four forward gears and two reverse gears.
Chassis
The tractor is equipped with an elastic torsion bar suspension with individual suspension of the road wheels. Closed-joint track with lifetime lubrication.
Number of road wheels on each side8
Number of support rollers on each side2
Tension and release mechanismhydropneumatic, telescopic type
Track shoe width, mm700 (850)
Pitch, mm290
Number of shoes per track79
Grouser height, mm100
Electrical equipment
The automatic control system (ACS) allows the driver to monitor the condition of components and systems both when preparing the tractor for work and during operation.
Rated power, V17,.0
Generator power, kW3,5
Number of batteries4
Cabin
Metal, double, volume 3.5 m3, with double glazing and heat and sound insulating lining. It is isolated from the tractor frame by rubber shock absorbers. Has a protective fence installed on the tractor support legs.
Hydraulic system
Two-stage, separate-unit with gear-type pumps, unloaded when the attachment control lever is in the neutral position. The selector regulators for ripper and bulldozer equipment are separate, a full-flow filter is installed on the drain pipeline in the hydraulic tank.
Nominal pressure in the system, MPa17.0
Safety valve setting pressure, MPa17.5
Pressure in cascade I (control), MPa2.5
Capacities
Fuel tank, l2050
Cooling system, l383
Engine lubrication system, l225
Gearbox and rear axle, l200
Torque converter, l200
Final drive (each), l75
Hydraulic system of attachments, l580
Air conditioning, l2
Bulldozer equipment
Hemispherical, fixed blade with hydraulic skew
Dump capacity, m326,2
Blade width, mm6 000
Blade height, mm2 600
Maximum blade depth, mm800
Main cutting angle, degrees55
Change in cutting angle, degrees50-60
Blade lateral angle in each direction, degrees8
Blade hydraulic cylinders
Lifting2
Skew1
Weight of bulldozer equipment, kg16 295
Ripping equipment
Single-tooth ripper with adjustable ripping angle
Maximum depth, mm1 800
Change in loosening angle, degrees (at a normal angle of 45 degrees)37 — 62
Number of hydraulic cylinders
Lifting and lowering4
Removing and installing the ripper pin1
Weight of loosening equipment, kg11 200
Ground pressure with shoe width 700 mm, MPa
Tractors0,0937
Tractors with bulldozer and ripper equipment0,158
dimensions
Length, mm7 945
Width, mm4 185
Height, mm4 775
Track, mm2 880
Base, mm6 220
Overall dimensions of the tractor with bulldozer and ripper equipment
Length, mm12 400
Width, mm6 000
Height, mm4 775
Operating weight
Tractor, kg76 500
Tractors with bulldozer and loosening equipment, kg106 000

Optional equipment:

Cabin protective frame Air conditioning Chassis protection Final drive protection Pre-heater Cabin heater Fire fighting equipment

Transitional shelves, handrails, footrests

Special offer

Exchange rates of the Central Bank of the Russian Federation

Indicator Unit of measurement Quantity Designation of the machine TDT-75 Traction class 3 Chassis design Crawler version Purpose Skidder Traction force kgf 3,000 Weight of the machine ready for operation 11.0 Gear ratio of the gearbox modes: forward movement reverse movement 5 1 Rate of movement in operating mode: forward movement reverse movement km/h 7.64 2.57 Track along the edges of the gu hay belts 1.91 Base axes of the head rollers and drive sprocket 2.72 Clearance cm 0.55 Load of the caterpillar belt on the soil (specific) kgf/cm 20.42 Dimensions LxWxHm 5.505x2.37x2.70 Designation of the power plant D-75T-AT Power parameters at 1,500 crankshaft revolutions per minute l. p.75Specific consumption of fuel grams per liter. With. per hour 205 Parameters of the cylinder group: cylinder diameter piston stroke ignition order mm 125 152 1 * 3 * 4 * 2 Engine weight kg 1150 Refilling fuel 110 Starting the power plant Starting motor PD-10M

Power point

The skidder is equipped with a D-75T-AT diesel engine, a modification of the D-60T engine.

The engine is a 4-stroke engine with an in-line arrangement of 4 cylinders in a cast-iron block, the fuel mixture is formed by a vortex chamber method. The power unit has a power rating of 75 hp. With. at 1,500 crankshaft revolutions per minute.

Changes have been made to:

  • fuel supply system. The fuel pump provides fuel supply with a capacity of 18.0 kg/h;
  • the shape of the combustion chambers and the bottom of the aluminum cylinder. The injectors and cylinder head sockets are placed at an angle of 55° to the horizontal;
  • cylinder air filling system;
  • suction manifold;
  • gasoline engine starting systems.

Power transmission

The clutch is a mechanism with two permanently closed disks, dry type.

The drive shafts ensure the transmission of motor rotational torque to the winch and transmission mechanisms. A small cardan-type shaft provides connection between the clutch and the transfer box. A large shaft connects the gearboxes and transfers.

The gearbox shafts rotate on bearings pressed into the gearbox housing.

Important! The box provides 5 torque transmission modes for forward movement and 1 for reverse direction. The locking device does not allow changing modes when the clutch is engaged.

The gearbox is controlled from the driver's cabin through a shaft with a cardan unit.

Chassis

The welded frame is made of 2 steel spars connected by three transverse pipes, a protective sheet and a front sheet.

The suspension design uses spring and balancer units.

Seeders SZP-3.6

The Kirovograd enterprise "Chervona Zirka", founded at the end of the nineteenth century by two brothers from England, was previously called the Elvorti plant. At one time it was the only manufacturer in Europe of many types of agricultural machinery. It was on it that in 1929 the first seeder driven by a tractor was invented (before that they were horse-drawn).

The modern seed drill of the SZP-3.6 type (otherwise, ASTRA 3.6P) is one of the modifications of the common SZ-3.6 model, differing from it in the front end with two pneumatic wheels. In addition, in the rear part of the unit, under the frame, there are ring rollers (four sections) that compact the ground. Because of the latter feature, the machine is also called a press machine.

Purpose

This device is useful when barley, rye, oats, wheat or any other types of grain are ready for sowing in the bins. It can also be peas with soybeans or rarer chickpeas with chickpeas - in general, any legumes. You can also use seeds of a different type, which have similar consumption rates and dimensions. For example, millet, buckwheat or rice.

Conveniently, they can be sown in 24 rows at once. And if you use a special hitch and connect two or more machines, the number of rows will increase two to three times. The necessary fertilizers in the form of granules are immediately added to the soil. Their rate, as well as the number of seeds, can be regulated by a special mechanism - a variator.

Photo of the SZP-3.6 seeder

Advantages and disadvantages

Advantages:

  • The design of the machine is very simple.
  • The depth of planting seeds can be very conveniently and extremely quickly adjusted (in increments of one centimeter).
  • The speed of work is quite decent.
  • The ability to form a line of two or three cars and cover a huge area at once.
  • Convenient adjustment of the amount of seed and fertilizer material.
  • Rolling the earth to retain moisture.

Flaws:

  • The brackets connecting the footboard to the frame are somewhat flimsy.
  • The compartments for fertilizers and seeds have separate covers - if you need to sow a little, this is inconvenient.
  • The double-disc type coulters used here allow seeding only in rows, and not in stripes, like more efficient single-disc devices. Therefore, this model is sometimes modernized by changing the openers to single-disc ones.

Crawler tractor dt-75

Tractor dt-75 photo

Crawler tractor DT-75 description and technical characteristics. The DT-75 tractor is designed to perform basic agricultural work in a unit with mounted, semi-mounted and trailed implements, as well as machines with passive and active working parts.

DT-75 is a general-purpose tracked arable agricultural tractor, traction class 3. Depending on the engine configuration, the DT-75 tractor has the brand:

  • DT-75N with SMD-18N engine – manufactured to special order;
  • DT-75D with A-41 engine (D-440-22);
  • DT-75RM with RM-120 engine.

With appropriate equipment, the industrial modification DT-75 can be used for road construction, reclamation, transport, loading and unloading operations and in conjunction with welding equipment. A peat (swamp) modification was created on the basis of the DT-75 tractor.

Longitudinal section of the DT-75:1 crawler tractor – engine; 2 – cabin; 3 – fuel tank; 4 – levers of the mounted device; 5 – power take-off shaft; 6 – trailer bracket; 7 – drive wheel; 8 – central gear; 9 – caterpillar; 10 – gearbox; 11 – support wheel; 12 – clutch; 13 – guide wheel.

Manufacturer: Volgograd Tractor Plant; mass production began in 1963.

Safe and comfortable working conditions are provided by:

  • sealed noise- and vibration-isolated cabin;
  • cabin air cooler;
  • cabin heater;
  • sprung adjustable seat;
  • front and rear windshield wipers;
  • front window washer.

Equipment for aggregation:

  • hydraulic control and drive system for implements;
  • rear linkage;
  • towing device;
  • single-speed power take-off shaft (540 rpm or optional 1,000 rpm);
  • front removable ballast weights.

The cabin is equipped with an additional passenger seat. The balanced spring suspension with 4 rollers on board provides the tractor with good smooth running. At the request of consumers, the tractor can be equipped with an additional creeper or reverse gearbox.

Technical characteristics of the tractor DT-75 DT-75NDT-75DDT-75RM

Traction class3
Engine (in-line 4-cylinder, liquid-cooled, turbocharged)SMD-18NA-41(D-440-22)RM-120
Cylinder diameter x piston stroke, mm Displacement, l Crankshaft rotation speed during operation. power, rpm Specific fuel consumption during operation. power, g/kWh. (g/l.h.) Relative oil consumption for waste, % 110x130 4.941800231(170)0.4
Operating power, kW (hp)70(95)73,5(100)
Speed ​​range, km/h0,34…11,50,33…11,1main: 5.6…11.84 with creeper: 0.35…11.84 with reverse gear: 3.35…11.84
Number of gears
– forward travel (with creeper, with reverse gear)7 (23, 14)
– reverse gear (with speed reducer, with reverse gear)1 ( 5, 7)
Nominal torque reserve factor, %153525
Track, mm1330
Ground clearance, mm380
Tractor weight (operating), kg: – with main equipment, 470 mm wide track, kg681069506800
Weight of removable ballast weights, kg250
Overall dimensions, mm
– length (with attachment in transport position)4530
- width1850
- height27202710

Source:

DT-75M technical characteristics

DT-75M technical characteristics. The DT-75M tractor is a modification of the DT-75 tractor. Crawler, general purpose, traction class 30.0 kN (3 tf).

Designed to be used in conjunction with mounted, semi-mounted and trailed hydropowered machines for agricultural (ploughing, continuous cultivation, harrowing, stubble peeling, sowing and harvesting of crops, snow retention), earthmoving, reclamation and road work.

The DT-75M is equipped with a four-cylinder, four-stroke, liquid-cooled SMD-14NG diesel engine.

The main engine is started from the driver's seat using a starting engine with an electric starter.

The tractor components and mechanisms are mounted on a welded frame, consisting of two longitudinal spars of a closed rectangular cross-section, interconnected by transverse links.

The DT-75M bulldozer is designed for developing and moving soil of categories 1 and 2, digging and filling trenches, erecting embankments, moving crushed stone and other road-building materials, clearing roads of snow, as well as for performing planning work.

The main clutch is dry, double-disc, permanently closed; a planetary-type torque booster with a friction clutch (gear ratio i = 1.25) is installed in front of the gearbox in a separate housing, which is engaged on the move without interrupting the power flow.

It is designed to increase traction efforts by 25% in all gears when the tractor unit overcomes temporary additional movement resistance.

Instead of a torque increaser, a four-stage speed reducer can be installed, intended only for obtaining low speeds of the tractor unit.

The gearbox and rear axle are mounted in one housing. The rear axle has two single-stage planetary steering mechanisms with stopping brakes.

Band brakes, floating type, make it possible to brake the tractor during forward and reverse travel. The planetary mechanism allows you to reduce the effort on the steering control levers. The tractor is equipped with a dependent PTO, which receives rotation from the drive shaft of the torque multiplier (TMC) or the drive shaft of the speed reducer.

The chassis consists of drive and guide wheels, support rollers with rubber bands, four balance suspension carriages and two track chains. To work with beet harvesters, a unified narrow caterpillar track is installed on the tractor.

The tractor is equipped with a separate-unit hydraulic system, a rear linkage mechanism with an automatic coupler for connecting machines using two-point and three-point schemes, and a towbar. The hydraulic mounted system allows the tractor driver to control mounted, semi-mounted and trailed hydraulic machines from the cab.

The cabin is closed, all-metal, two-seater, sealed and sprung. The seat is adjustable according to the weight and height of the driver. To create normal temperature conditions in the cabin, a ventilation unit is provided that supplies air that has been cleared of dust, humidified and cooled. It turns on when the cabin windows and doors are closed.

To ensure optimal air temperature at the driver's workplace in winter, a calorie-type heater is installed in the tractor cabin.

The design of the cabin allows you to operate the tractor in any weather conditions. To improve visibility, the cabin is shifted to the right of the tractor axis, and the fuel tank of increased capacity is located on the left side of the cabin. To warm up the engine before starting at ambient temperatures below -5° C, a pre-start heater PZHB-200 is installed on the tractor.

DT-75M - technical characteristics

Rated operating power of the engine, kW (hp)66,2 (90)
Rotation speed, rpm:
..engine crankshaft at rated power1750
..PTO540 and 1000
Cylinder diameter, mm130
Piston stroke, mm140
Specific fuel consumption at rated operating power, g/kW*h (g/e. hp-h)251,5 (185)
Fuel used for:
..main enginediesel
..starting motora mixture of automobile gasoline A-72 or A-76 with diesel engine oil in a ratio of 20:1 by weight
Fuel tank capacity, l315
Track, mm1330
Longitudinal base, mm1612
Ground clearance (on a hard-surfaced area along the yoke for attaching the gearbox to the frame), mm376
Track link width, mm390
Specific pressure on the soil with rear linkage mechanism, MPa (kgf/cm2)0,051 (0,51)
Overall dimensions, mm:
..length with rear linkage in transport position3480
..width1890
..height2650
Structural weight, kg6550

Source:

Preparation for work, adjustment to a given seeding rate

First, the completeness and technical condition are checked. The drive chains must be installed correctly - with the hooks up and forward in the direction of travel, check the operation of the drive mechanisms of the seeding units, clean the boxes, and lubricate them.

They install the USC and check the work.

Attention: when connecting, observe polarity to avoid damage!

The location of the openers in accordance with the specified sowing pattern is checked using a special board with marks. The board is laid down and, if the positions of the openers do not coincide with the marks, they are moved to the required places where they are fixed.

  1. Setting the seeder to the seeding rate is done on the installed unit.
  2. Place it on the trestle so that you can turn the wheels manually (they should not touch the ground).
  3. Move the regulator, checking whether all coils have the same length of the working part. Move if necessary.
  4. Check the gap between the valve planes and the lower rib of the coupling. It should not be more than 2 mm when sowing grains or 8-10 mm when sowing large legumes.
  5. Calculate the gear ratio. Use the diagram from the instruction manual. The selection is made based on the minimum gear ratio and the maximum extension of the working part of the coils.
  6. The seeds are poured into boxes and a tarpaulin is placed under the openers. Or they put bags on the vas deferens. The gears are installed to the mechanism for transmitting movement from the wheel to the shafts of the sowing devices.
  7. Turn the wheel several times to fill the coils. The spilled grain is picked up and returned back to the box.
  8. Turn the wheel 15 times at a speed comparable to movement in the field (the seeder is designed for an operating speed of no higher than 4.2 m/s).

The spilled grain is weighed and the seeding rate is checked using the formula: K=15πDVN/(10,000∙2(1-K))

Where K is the number of seeds per 15 revolutions, kg; D – wheel rim diameter, m; В – working width, m; required seeding rate, kg/ha; “2” – is entered when calculating for seeders in which half of the sowing units operate from the wheel; if everything is from 1 wheel, the number “2” is not entered into the formula; K – wheel slip coefficient, approximately equal (depending on the condition of the soil and how “bald” the tire is) 0.03–0.1.

If you are going to sow low-flowing grass seeds, it is better to turn the wheel 30 times; accordingly, instead of “15”, enter “30” into the formula - the result will be more accurate.

The adjustment is completed by setting the marker offset and placing the trail indicator.

Tractor DT-75 technical characteristics. DT-75 photo video

The DT-75 tractor is a general purpose caterpillar arable agricultural tractor, traction class 3. Depending on the engine configuration, the DT-75 tractor has the brand:

  • DT-75N with SMD-18N engine - manufactured by special order;
  • DT-75D with A-41 engine (D-440-22);
  • DT-75RM with RM-120 engine.

With appropriate equipment, the industrial modification DT-75 can be used for road construction, reclamation, transport, loading and unloading operations and in conjunction with welding equipment. A peat (swamp) modification was created on the basis of the DT-75 tractor.

Safe and comfortable working conditions are provided by:

  • sealed noise- and vibration-isolated cabin;
  • cabin air cooler;
  • cabin heater;
  • sprung adjustable seat;
  • front and rear windshield wipers;
  • front window washer.

Equipment for aggregation:

  • hydraulic control and drive system for implements;
  • rear linkage;
  • towing device;
  • single-speed power take-off shaft (540 rpm or optional 1,000 rpm);
  • front removable ballast weights.

The cabin is equipped with an additional passenger seat. The balanced spring suspension with 4 rollers on board provides the tractor with good smooth running. At the request of consumers, the tractor can be equipped with an additional creeper or reverse gearbox.

Tractor DT-75 technical characteristics

Rated operating power of the engine, kW (hp)58,8 (80)
Rotation speed, rpm:
..engine crankshaft at rated power1800
..PTO540 and 1000
Cylinder diameter, mm120
Piston stroke, mm140
Specific fuel consumption at rated operating power, g/kW*h (g/e. hp-h)251,3 (185)
Fuel used for:
..main enginediesel
..starting motora mixture of automobile gasoline A-72 or A-76 with diesel engine oil in a ratio of 20:1 by weight
Fuel tank capacity, l315
Track, mm1330
Longitudinal base, mm1612
Ground clearance (on a hard-surfaced area along the yoke for attaching the gearbox to the frame), mm376
Track link width, mm390
Specific pressure on the soil with rear linkage mechanism, MPa (kgf/cm2)0,049 (0,49)
Overall dimensions, mm:
..length with rear linkage in transport position3480
..width1890
..height2650
Structural weight, kg6440

DT-75 photo

Photo DT-75

Photo of DT-75

DT-75 photo with mounted plow

DT-75 video

Video DT-75
The video shows how the DT 75 works with a bucket.

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