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Design of mini backhoe
Vorlíček, Vít ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The aim of the bachelor thesis is to design a small tractor backhoe and aggregate it into a three-point suspension system with a maximum tearing force of at least 20 KN. This thesis is divided into six chapters and it deals with the division of excavator equipment, parts of excavation and analysis of competition, alternatives of design solution, design of own concept, functional calculations and strength calculations.
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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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Design of mini backhoe
Vorlíček, Vít ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The aim of the bachelor thesis is to design a small tractor backhoe and aggregate it into a three-point suspension system with a maximum tearing force of at least 20 KN. This thesis is divided into six chapters and it deals with the division of excavator equipment, parts of excavation and analysis of competition, alternatives of design solution, design of own concept, functional calculations and strength calculations.
|
|
|
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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