Dipper door retarding mechanism
First Claim
1. A mechanism for continuously retarding movements of a door of a dipper with respect to a body of the dipper, the mechanism comprising:
- a) a base configured to be secured to the body;
b) at least one hydraulic piston mounted to the base, the at least one piston being fluidly connected to a hydraulic pressure source;
c) a shaft mounted to the at least one piston;
d) at least one braking plate mounted to the shaft;
e) at least one braking arm having a first end and a second end, the first end of the braking arm being pivotally mounted to the shaft;
f) at least one linking member having a first end and a second end, the first end of the linking member being pivotally connected to the second end of the at least one braking arm, and the second end of the linking member being configured to be pivotally connected to the door;
whereby when hydraulic fluid is provided to the at least one piston, the at least one piston presses the at least one braking plate and the first end of the at least one braking arm against each other, effectively retarding a pivotal movement of the at least braking arm and effectively retarding a pivotal movement of the door with respect to the body.
1 Assignment
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Accused Products
Abstract
A retarding mechanism for continuously retarding the swinging movements of a dipper door comprises a hydraulic braking assembly mounted to the dipper bucket and operatively connected to the dipper door via at least one braking arm pivotally mounted within the braking assembly and at least one linking member pivotally mounted to the dipper door. The retarding mechanism continuously retards the opening and closing movements of the dipper door by controllably braking or slowing the at least one braking arm using the compressive action of at least one hydraulic piston mounted to the braking assembly.
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Citations
30 Claims
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1. A mechanism for continuously retarding movements of a door of a dipper with respect to a body of the dipper, the mechanism comprising:
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a) a base configured to be secured to the body; b) at least one hydraulic piston mounted to the base, the at least one piston being fluidly connected to a hydraulic pressure source; c) a shaft mounted to the at least one piston; d) at least one braking plate mounted to the shaft; e) at least one braking arm having a first end and a second end, the first end of the braking arm being pivotally mounted to the shaft; f) at least one linking member having a first end and a second end, the first end of the linking member being pivotally connected to the second end of the at least one braking arm, and the second end of the linking member being configured to be pivotally connected to the door; whereby when hydraulic fluid is provided to the at least one piston, the at least one piston presses the at least one braking plate and the first end of the at least one braking arm against each other, effectively retarding a pivotal movement of the at least braking arm and effectively retarding a pivotal movement of the door with respect to the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mechanism for continuously retarding movements of a door of a dipper with respect to a body of the dipper, the mechanism comprising:
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a) a base configured to be secured to the dipper body; b) first and second hydraulic pistons mounted to the base such as to face each other, the first and second pistons being fluidly connected to a hydraulic pressure source; c) a shaft mounted to the first and second pistons; d) braking plates slidingly mounted to the shaft; e) at least one braking arm having a first end and a second end, the first end of the at least one braking arm being pivotally mounted to the shaft and being interleaved between two of the braking plates; f) at least one linking member having a first end and a second end, the first end of the at least one linking member being pivotally connected to the second end of the at least one braking arm, and the second end of the at least one linking member being configured to be pivotally connected to the dipper door; whereby when hydraulic fluid is provided to the first and second pistons, the first and second pistons move toward each other and press the braking plates against the first end of the at least one braking arm, effectively retarding a pivotal movement of the at least one braking arm with respect to the shaft. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A dipper comprising a body, a door pivotally mounted to the body, and a mechanism for retarding a pivotal movement of the door with respect to the body, the mechanism comprising:
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a) a base secured to the body; b) first and second hydraulic pistons mounted to the base such as to face each other, the first and second pistons being fluidly connected to a hydraulic pressure source; c) a shaft mounted to the first and second pistons; d) braking plates slidingly mounted to the shaft; e) at least one braking arm having a first end and a second end, the first end of the at least one braking arm being pivotally mounted to the shaft and being interleaved between two of the braking plates; f) at least one linking member having a first end and a second end, the first end of the at least one linking member being pivotally connected to the second end of the at least one braking arm, and the second end of the at least one linking member being pivotally connected to the door; whereby when hydraulic fluid is provided to the first and second pistons, the first and second pistons move toward each other and press the braking plates against the first end of the at least one braking arm, effectively retarding a pivotal movement of the at least one braking arm with respect to the shaft as the door pivots with respect to the body. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A dipper comprising a body, a door pivotally mounted to the body, and a mechanism for retarding a pivotal movement of the door with respect to the body, the mechanism comprising:
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a) a base configured to be secured to the body; b) at least one hydraulic piston mounted to the base, the at least one piston being fluidly connected to a hydraulic pressure source; c) a shaft mounted to the at least one piston; d) at least one braking plate mounted to the shaft; e) at least one braking arm having a first end and a second end, the first end of the braking arm being pivotally mounted to the shaft; f) at least one linking member having a first end and a second end, the first end of the linking member being pivotally connected to the second end of the at least one braking arm, and the second end of the linking member being configured to be pivotally connected to the door; whereby when hydraulic fluid is provided to the at least one piston, the at least one piston presses the at least one braking plate and the first end of the at least one braking arm against each other, effectively retarding a pivotal movement of the at least braking arm and effectively retarding a pivotal movement of the door with respect to the body.
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Specification