CZK - JT-34 (jeřábový tank)

& # 381; eriav tank JT 34 (Jerab tank - JT)


JT 34 was the first project whose development was completely realized in the Development Structure of the then J. V. Stalin Plant in Martin. The development began in 1957 on the basis of the requirements of the Tank and Automobile Administration of the Ministry of National Defense of the Slovak Republic.
In 1958, functional samples of a vehicle with a hydraulically operated engine were made, which was modified to a prototype in 1959 on the basis of tests. In 1960, complete company, control and military tests of the prototype were performed and At the beginning of 1961, the development of the vehicle was completed.
The verification series JT 34 in the number of 5 pieces was produced in 1962 and in 1963 and & # 382; In 1966, serial production took place.
The vast majority of manufactured vehicles were used by the domestic military, the SLA, but several dozen were also delivered for export to India and Morocco.


The equipment was equipped with a special superstructure arm for working in covered wagons (max. Load capacity: 1.25 t).


Main technical parameters of JT 34:


weight & # 357; : 31,500 kg
crew: 2 men & # 382; i
max speed & # 357; : 55 km/h
specific power: 11.7 kW/t
range: 400 km


Purpose superstructure:


type & # 382; eriavu: swinging, hook with multiple hoist
& # 382; eriavu drive: hydraulic, hydrogenerator drive with TATRA 603-C engine (33 kW)
load & # 357; Weight: 10 t at 3.5 m unloading
1.5 t when unloading 8.1 m
working pressure of the hydrosystem: 16 MPa


source: MOT 8/2000

A little bit of data on the extension:
In the years 1962 to 1965, was in the TSG n. c. Martin, made about 80 crane tanks JT-34.
"Crane tank JT-34 consists of the chassis of tank T-34 and the crane superstructure, which allows lifting loads up to 10 t in field conditions. In addition to this main activity can take place even lighter recovery work. Crane tank is designed for dismantling and mounting of complete towers, tanks, cannons and other units and groups used by tank troops in the field. Of its properties may be advantageously used with other types of troops, e.g. in a variety of engineer construction sites, loading and unloading, etc.“
So much to quote from the regulation, "CRANE TANK JT-34 Description and operation" from 1965. These and the salvage work could carry even for the lighter combat and wheeled machinery. The Tank was manufactured only for the use OF.

Technical description
Tower – crane superstructure was welded from armor plates with thickness up to 12 mm and divided into two parts. The first part consists of space for the crane operator -a tank commander, who had available the entrance top hatch, two side round hatches and two front hatches. inside were the controls of hydraulics, instrument panel, radio and observation instrument to work with closed hatches. In the second part of the separated partition is the drive unit of the crane, consisting of a gasoline, air-cooled eight-cylinder "TATRA T603C." The engine through the gearbox and flexible coupling-powered hydraulic pump. Access to the engine and the pump was only from the top through a pair of trapezoidal flaps. The sides of the jeřábníkovy booth were the studs for swinging the imposition of the bracket. His vertical movement is provided for by a pair of hydraulic pistons. The boom consisted of hard shoulders, which in itself, however, was a retractable arm with a hydraulic cylinder, bearing, retaining and guiding the rollers winding drum with the grounded rope, driven by a "hydromotorem" VMP 1600, and the mechanism of the brake stroke. The steel cable had a diameter of 20 mm and passes through the system pětinásobných pulleys at the end of the boom and quadruple the kladnici hook. Into the pins at the end of the boom it was possible to anchor the extension arm with a hook for lifting lighter loads up to a weight of 1250 kg and their unloading from cars or warehouses. Horizontal movement of the tower – crane superstructure, stored on a ball track formed of the ball dvouřadým bearing capturing both axial and radial forces and stored in place of the original ball runway battle tank, acquired a "motor" VMP 1600, with the pinion engaging the gear teeth of the internal wreaths bearing, mounted on the ceiling of the hull, against the rotation of the tower – the crane superstructure, the tank was equipped with a brake on the rotation. In the transport position was the boom rotated backward. For his anchor is used a folding prop.
The chassis was used fully from the tank T - 34 - 85 and even from older cars. On the sides were added to the anchoring locations on the attachment of additional equipment. Above the engine compartment was a knock-down supporting frame, which served for the transport of goods (for example, tank engine, or a fully rigged turret of a T-34-85).
The drive unit was again the standard engine IN-2-34 (V - 2 - 34M). in the lid above the engine created two new openings, the covered lids, allowing access to the injection pump and odvzdušňovači in the transport position of the boom.
Volume vezeného fuel was 872 l, of which 602 l in internal tanks and 270 liters in three external tanks.
In the back they had their place two other crew members:
the driver and gunner – assistant crane operator -slinger loads.
The Tank was armed with again a machine gun DTM caliber 7,62 mm, located in the same place as the standard tank.
In the interior of the hull were added reinforcements to the motor bulkhead, the floor of the finned sheet with odklopnými lids for the adjustment of the control rods on the spot "jaščiků" with ammunition and the new holder of the collector AGE-27.
According to the regulation it is, however, measured only a two-man crew, in this case, the driver was following all the above-listed tasks alone !!

Therefore, according to the Tank-21-3 (raha 1965) Crew : 2 men commander - jeřábnik, driver - slinger loads


Size+TTD:
Length in transport position: 8 900 mm
Width: 3 000 mm
Height total: 3 000 mm
Ground clearance: 400 mm
Fighting weight: 31 500 kg
Engine power: 500pcs/375 kW
Maximum speed on road: 55 km/h
Maximum speed in field: 25 km/h
The consumption of fuel communications: 160 liters/100 km
Fuel consumption in the field: 230 liters/100 km
Cruising range on road: 380 km
The range in the field: 270 km
Gradeability: 30°
Side slope: 25°
Trench: 2 000 mm
Perpendicular wall: 700 mm
Brod: 1 300 mm.

Crane tank JT-34 was designed for disassembly and assembly of complete turrets of tanks, cannons and other units and groups used by the tank army in field conditions. Furthermore, it can be used in various engineering constructions, in loading and unloading, etc.


JT-34 consists of a T-34 tank chassis and a crane superstructure, which allows lifting loads up to 10 t in field conditions. In addition to this main activity, he can also carry out easier liberation work. The tank works without supports, so it can change its position very quickly.


In the entire range of permitted loads, the crane superstructure is completely rotatable with a boom, which can be used to change the size of the unloading either by tilting (lifting) or by extending (sliding in) the arm. The tank works without supports, so it can change its position very quickly.


The crane can perform 4 basic working movements, in addition to the travel performed by the tank:


- lifting, lowering and adjusting the load with a block. The hoist with a hook is suspended on a double rope hoist,
- boom lifting, lowering and adjusting. They provide two rectilinear fluid motors (cylinders) that are interconnected,
- extending, retracting and stopping the extension arm,
- turning the crane to the right or left.


At the rear of the tank is a system of beams, which allows to drop and transport various groups and systems of tanks, including complete towers.
The crane is equipped with a device for emergency turning of the crane and lowering of the load in case of failure of the fluid system.


Armament
- machine gun DTM + 910 rounds,
- submachine gun vz.58 + 1200 rounds,
- pistol vz.52 + 56 rounds,
- signal pistol + 1 set of ammunition,
- hand grenades - 10 pcs.


Used connectors:
- rdst: type R-113,
- tank talk equipment - type R-120



Source: Tank-21-3 Crane tank JT-34 Description and operation - ČSĽA regulation, Prague, 1965

Data from other sources:

Development: 1957 - 1961
Production: 1962 - 1966
The price of one JT-34 in 1964: 622 000 Crowns
The number of units produced: 150
Users (supplies directly from the manufacturer): Czechoslovakia, India, Morocco.

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Machine ENSAMBLE in action....

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Niekoľko fotiek žeriavového tank JT-34 - exhibit Military múzea vo Svidníku.






(©Norbert Mogyorósi).

View of the interior..

Photos with láskavým permission www.militaryfoto.sk.

A little something fot the interior of the crane superstructure....crane operation...

source
kvaht-krenovice.rajce.idnes.cz.

JT-34 in Military historical museum in Piešťanoch 2010.

Source: own photo.

JT-34 - evidenčné number

Under the plan of BPP for the year 1967 will be done in dňoch 4 to 9.7.1967 tactical-poradové cvičenie department.
On cvičenie vyviesť this technique and vodičov:

JT-34 or no. 42032, conductor. slob. Šrubař Vladimir


Source : the Secret order of the chief 14. technical opravovní no 06 zo of the day 28.6.1967, mjr.ing. Dunčko Jozef,.