Center frame in crawler travel device and method for manufacturing center frame
The present invention provides a center frame designed so that a center member, legs, and a lower plate can be formed by bending metal sheets, and to provide a manufacturing method for the center frame.A pair of front legs and a pair of rear legs are formed by bending metal sheets so as to have subs...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
29.11.2011
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| Online Access | Get full text |
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| Summary: | The present invention provides a center frame designed so that a center member, legs, and a lower plate can be formed by bending metal sheets, and to provide a manufacturing method for the center frame.A pair of front legs and a pair of rear legs are formed by bending metal sheets so as to have substantially reverse U-shaped cross-sections. The center member is formed by bending a metal sheet so as to have a substantially square U-shaped cross-section. The front legs , the rear legs , the center member , a center front plate , and a center rear plate are placed on and securely weld to the lower plate , which has an approximate X shape, in a plan view, and an isosceles trapezoidal shape in a lateral cross-section. This eliminates the need for expensive molds and makes it possible to easily manufacture the center frame from the center member, legs, and lower plate formed by bending metal sheets. |
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