AUTOMATIC OPEN-CLOSE REAR GATE STRUCTURE FOR DUMP TRUCK
PROBLEM TO BE SOLVED: To provide an automatic open-close rear gate structure for a dump truck which is not easily damaged and readily configured without affecting a turning radius. SOLUTION: The structure includes a first axle P1 which pivotally journals a vessel 3 on a vehicle frame 1, a third axle...
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Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an automatic open-close rear gate structure for a dump truck which is not easily damaged and readily configured without affecting a turning radius. SOLUTION: The structure includes a first axle P1 which pivotally journals a vessel 3 on a vehicle frame 1, a third axle P3 which is spaced backward a predetermined distance d1 from the first axle P1 on the vessel 3, a fourth axle P4 spaced from and below the first axle P1 a predetermined distance d2 on the vehicle frame 1, a fifth axle P5 which pivotally journals one end of a first link 6c of which another end is pivotally journaled by the third axle P3 and one end of a second link 6d of which another end is pivotally journaled by the fourth axle P4, and a four-knots-link 6 comprising four links (6a-6d) connected one another consequently. The structure also includes a conversion link 7 disposed between an arm 5a and the first link 6c. The conversion link 7 converts the marginal increment (Δθ) of the inner angle of the four-knots-link 6 (θ=θ0 +Δθ, θ0 : reference inner angle when the rear gate is closed), which varies corresponding to raised position of the vessel 3, into amplitude of the rear gate 5b opening with respect to the rear end of the vessel 3. |
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