PB-34
The idea of a tracked bulldozer built on the chassis of the T-34 tank was conceived at the then Ministry of National Defence, probably sometime in the mid-1960s. The actual implementation was undertaken by the military repair plant in Nový Jičín. The project of the PB-34 crawler bulldozer was headed by Colonel Lukáš. Three prototypes of this machine were built by October 1969, the first of which was built in a very short period of four months. Subsequent tests were carried out, for example, in the North Bohemian brown coal district and power plants.
The basis for the construction of the bulldozer was the chassis of the T-34 tank, which the Czechoslovak People's Army had at its disposal in considerable numbers. In the mid-1960s, these tanks were practically suitable for only one task in Central Europe - scrapping. That is why this project was initiated to use them in the civilian sector. The chassis of the T-34 tank without turret was equipped with a bulldozer at the front and a scarifier at the rear. The driver's compartment was raised and fitted with a cab from a TATRA T-813 truck.
The bulldozer equipment consists of a plough carried by two push arms, which are mounted approximately 500 mm in front of the centre of gravity of the entire vehicle. The push arms are made of a closed welded beam. The vertical movement of the coulter is provided by two hydraulic cylinders with a stroke of 1 000 mm. This allows the coulter to be retracted by 400 mm and raised above the normal position by 800 mm. Reciprocal tilting is provided by a third hydraulic cylinder, the angle of tilting of the coulter from the horizontal plane is 7°.
The scarifier at the rear of the dozer, consisting of three adjustable teeth, allows the disconnection of frozen soil or rocky ground. The scarifier stroke of 800 mm is provided by a pair of hydraulic cylinders. The basic digging depth of the scarifier is 400 mm, increasing by 300 mm when the teeth are repositioned.
The cab is equipped with an adjustable driver's seat, with a three-person upholstered bench behind it.
Technical and tactical data
PB-34
Weight: 32 000 kg
Dimensions:
- Length: 8 850 mm
- Width: 3 800 mm
- height: 2 750 mm
Power unit:
- Four-stroke, direct injection diesel
- number of cylinders: 12
Transmission:
- 3 forward, 1 reverse
Working speeds:
- Forward: 4.6 km/h
- Reverse: 5.5 km/h
- transport: 20 km/h
Operating power: 135 m3/h at a transport distance of 20 m
Radlice
Weight: 3000 kg
Dimensions:
- Width: 3 800 mm
- Height: 1 350 mm
Stroke: 800 mm
Recess: 400 mm
Slope: 7° to both sides
Scarifier
Dimensions:
- Length: 1 700 mm
- width: 2 500 mm
Recess 0 - 700 mm
The idea of a tracked bulldozer built on the chassis of the T-34 tank was conceived at the then Ministry of National Defence, probably sometime in the mid-1960s. The actual implementation was undertaken by the military repair plant in Nový Jičín. The project of the PB-34 crawler bulldozer was headed by Colonel Lukáš. Three prototypes of this machine were built by October 1969, the first of which was built in a very short period of four months. Subsequent tests were carried out, for example, in the North Bohemian brown coal district and power plants.
The basis for the construction of the bulldozer was the chassis of the T-34 tank, which the Czechoslovak People's Army had at its disposal in considerable numbers. In the mid-1960s, these tanks were practically suitable for only one task in Central Europe - scrapping. That is why this project was initiated to use them in the civilian sector. The chassis of the T-34 tank without turret was equipped with a bulldozer at the front and a scarifier at the rear. The driver's compartment was raised and fitted with a cab from a TATRA T-813 truck.
The bulldozer equipment consists of a plough carried by two push arms, which are mounted approximately 500 mm in front of the centre of gravity of the entire vehicle. The push arms are made of a closed welded beam. The vertical movement of the coulter is provided by two hydraulic cylinders with a stroke of 1 000 mm. This allows the coulter to be retracted by 400 mm and raised above the normal position by 800 mm. Reciprocal tilting is provided by a third hydraulic cylinder, the angle of tilting of the coulter from the horizontal plane is 7°.
The scarifier at the rear of the dozer, consisting of three adjustable teeth, allows the disconnection of frozen soil or rocky ground. The scarifier stroke of 800 mm is provided by a pair of hydraulic cylinders. The basic digging depth of the scarifier is 400 mm, increasing by 300 mm when the teeth are repositioned.
The cab is equipped with an adjustable driver's seat, with a three-person upholstered bench behind it.
Technical and tactical data
PB-34
Weight: 32 000 kg
Dimensions:
- Length: 8 850 mm
- Width: 3 800 mm
- height: 2 750 mm
Power unit:
- Four-stroke, direct injection diesel
- number of cylinders: 12
Transmission:
- 3 forward, 1 reverse
Working speeds:
- Forward: 4.6 km/h
- Reverse: 5.5 km/h
- transport: 20 km/h
Operating power: 135 m3/h at a transport distance of 20 m
Radlice
Weight: 3000 kg
Dimensions:
- Width: 3 800 mm
- Height: 1 350 mm
Stroke: 800 mm
Recess: 400 mm
Slope: 7° to both sides
Scarifier
Dimensions:
- Length: 1 700 mm
- width: 2 500 mm
Recess 0 - 700 mm
