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Grapple of the excavator
Fiala, Petr ; Zeizinger, Lukáš (referee) ; Kašpárek, Jaroslav (advisor)
In this work is designed hydraulic polyp grapple for handling with wide range of materials. The content of this work is concept of new shaped handling equipment. There is technical processing of parts of the grapple, and calculation. Device is designed as changeable equipment for excavators.
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Backhoe for tractor
Jurák, Pavel ; Červinka, Jan (referee) ; Škopán, Miroslav (advisor)
The aim of this thesis is a design of an additional excavator with side shift for agricultural tractor with power from 50 to 70 kW. The excavator is controlled by a hydraulic circuit. The main element here is an independent pump with a 40l / min supply, which is driven by a gearbox using a cardan shaft. The hydraulic circuit has been designed so that the temperature of the hydraulic fluid does not exceed the allowable limit. An important role is played by the connection to the tractor where was used a modified three-point hitch. This coupling of the tractor with the frame of excavator ensures sufficient rigidity when performing excavation work. When calculating the excavation resistance, was considered the soil of the 4th class, this is hard-to-disconnect soil or clay. The calculation implies that the machine can be used with backhoe buckets up to 500 mm wide. Strength analysis of boom was performed in Ansys Workbench 2019. Safety coefficients were determined for individual components. The overall safety coefficient is equal to 1.7.
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Backhoe for tractor
Jurák, Pavel ; Červinka, Jan (referee) ; Škopán, Miroslav (advisor)
The aim of this thesis is a design of an additional excavator with side shift for agricultural tractor with power from 50 to 70 kW. The excavator is controlled by a hydraulic circuit. The main element here is an independent pump with a 40l / min supply, which is driven by a gearbox using a cardan shaft. The hydraulic circuit has been designed so that the temperature of the hydraulic fluid does not exceed the allowable limit. An important role is played by the connection to the tractor where was used a modified three-point hitch. This coupling of the tractor with the frame of excavator ensures sufficient rigidity when performing excavation work. When calculating the excavation resistance, was considered the soil of the 4th class, this is hard-to-disconnect soil or clay. The calculation implies that the machine can be used with backhoe buckets up to 500 mm wide. Strength analysis of boom was performed in Ansys Workbench 2019. Safety coefficients were determined for individual components. The overall safety coefficient is equal to 1.7.
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Grapple of the excavator
Fiala, Petr ; Zeizinger, Lukáš (referee) ; Kašpárek, Jaroslav (advisor)
In this work is designed hydraulic polyp grapple for handling with wide range of materials. The content of this work is concept of new shaped handling equipment. There is technical processing of parts of the grapple, and calculation. Device is designed as changeable equipment for excavators.
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