Seven-ton class hydraulic excavator
Output power of an engine 1 is set to be 36 kW, lower than current 40 to 55 kW output power. Consumption (absorption) horsepower of a hydraulic pump 2 is set to be substantially the same as current consumption horsepower of a hydraulic pump usually mounted on a seven-ton class hydraulic excavator ba...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | English |
Published |
01.08.2016
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Subjects | |
Online Access | Get full text |
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Abstract | Output power of an engine 1 is set to be 36 kW, lower than current 40 to 55 kW output power. Consumption (absorption) horsepower of a hydraulic pump 2 is set to be substantially the same as current consumption horsepower of a hydraulic pump usually mounted on a seven-ton class hydraulic excavator based on related art. The conduits 4a, 4b, Sa, 5b extending from a control valve 3 to a boom cylinder 4 and an arm cylinder 5 are configured to have a size of 3/4 inch (1.91 cm) which is larger than a current hose size adopted in the related art. The conduits 7a, 7b extending to traveling motors 7, 8 are configured to have a size of 5/8 inch (1.59 cm) which is larger than a current hose size adopted in the related art. As a result, a hydraulic excavator that, despite its seven-ton class specifications, can be equipped with the engine free of structurally complex and expensive engine peripheral devices, and that maintains performance comparable to that of a conventional working machine is provided. |
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AbstractList | Output power of an engine 1 is set to be 36 kW, lower than current 40 to 55 kW output power. Consumption (absorption) horsepower of a hydraulic pump 2 is set to be substantially the same as current consumption horsepower of a hydraulic pump usually mounted on a seven-ton class hydraulic excavator based on related art. The conduits 4a, 4b, Sa, 5b extending from a control valve 3 to a boom cylinder 4 and an arm cylinder 5 are configured to have a size of 3/4 inch (1.91 cm) which is larger than a current hose size adopted in the related art. The conduits 7a, 7b extending to traveling motors 7, 8 are configured to have a size of 5/8 inch (1.59 cm) which is larger than a current hose size adopted in the related art. As a result, a hydraulic excavator that, despite its seven-ton class specifications, can be equipped with the engine free of structurally complex and expensive engine peripheral devices, and that maintains performance comparable to that of a conventional working machine is provided. |
Author | TAKEO MANABE MAKOTO KUNO YOSHIMI NAKAYAMA TAKUYA MATSUI NOZOMU TANAKA KIWAMU TAKAHASHI HAJIME YOSHIDA YASUTAKA TSURUGA KAZUHIKO MIZOGUCHI KAZUSHIGE MORI |
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RelatedCompanies | HITACHI CONSTRUCTION MACHINERY CO., LTD |
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Snippet | Output power of an engine 1 is set to be 36 kW, lower than current 40 to 55 kW output power. Consumption (absorption) horsepower of a hydraulic pump 2 is set... |
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SubjectTerms | BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS |
Title | Seven-ton class hydraulic excavator |
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