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US 6,585,450 B2Granted
Speed controlled eccentric assembly
AssigneeIngersoll-Rand Company
InventorsKent Meyers, Steve K. Yates
Life of this patent
Estimating the term…
Abstract
The eccentric assembly includes a tubular section, an eccentric weight, and a counterweight. The eccentric weight is mounted within the tubular section such that as a motor rotates the eccentric assembly, the eccentric weight generates vibrations that are transferred to the drum assembly of the vibration compacting machine. The counterweight is slidably coupled to the eccentric weight and moves between a first position where the counterweight contacts the eccentric weight and a second position where the counterweight contacts the tubular section.
Claims17
An eccentric assembly for a vibration compacting machine, the eccentric assembly comprising:
- a tubular section, the tubular section being independently rotatable about an axis;
- an eccentric weight coupled within the tubular section and having a center of gravity on a first side of the axis and a cavity beginning on the first side of the axis and opening toward a second, opposite side of the axis, the eccentric weight includes a convex surface having a given curvature and the tubular section includes a concave surface having a given curvature, the curvature of the convex surface being substantially equal to the curvature of the concave surface;
- and
- a counterweight, having first and second portions, coupled with the eccentric weight, the counterweight having a total center of gravity and each portion having a portion center of gravity, the counterweight moveable relative to the eccentric weight over a range between a first position and a second position, the portions configured such that in the first position, the first portion extends into the cavity such that the first portion center of gravity is on the first side of the axis and the second portion center of gravity and the counterweight total center of gravity are on the second side of the axis;
- whereby the eccentric assembly provides a variable range of eccentric amplitude as the counterweight moves over the range between the first and second positions.
2 more elements
An eccentric assembly for a vibration compacting machine, the eccentric assembly comprising:
- a substantially closed tubular section having at least one sealable through bore and being rotatable about an axis;
- an eccentric weight coupled within the tubular section and having a center of gravity on a first side of the axis;
- a counterweight coupled within the tubular section and having a center of gravity on a second, opposite side of the axis, the counterweight moveable relative to the eccentric weight over a range between a first position and a second position;
- a fastener extending from the eccentric weight, through the counterweight and including a head member that is aligned with the through bore;
- a biasing member positioned about the fastener between the fastener head and the counterweight such that a biasing force biases the counterweight toward the first position, adjustment of the fastener through the through bore permitting adjustment of the biasing force;
- and
- a cap for sealingly closing the through bore.
4 more elements
An eccentric assembly for a vibration compacting machine, the eccentric assembly comprising:
- a substantially closed tubular section rotatable about an axis;
- an eccentric weight coupled within the tubular section and having a center of gravity on a first side of the axis;
- a counterweight coupled within the tubular section and having a bore of a given diameter, the counterweight having a center of gravity on a second, opposite side of the axis, the counterweight moveable relative to the eccentric weight over a range between a first position and a second position;
- a fastener extending from the eccentric weight, through the counterweight and including a head member having a shoulder portion having a diameter substantially the same as the given diameter;
- a biasing member positioned in the bore about the fastener between the fastener head member and the counterweight, the fastener tightened such that the shoulder is within the bore to substantially enclose the biasing member therein, the biasing member generating a biasing force that biases the counterweight toward the first position.
2 more elements
An eccentric assembly for a vibration compacting machine, the eccentric assembly comprising:
- a substantially closed tubular section rotatable about an axis;
- an eccentric weight coupled within the tubular section and having a center of gravity on a first side of the axis;
- a counterweight coupled within the tubular section and having a bore of a given diameter, the counterweight having a center of gravity on a second, opposite side of the axis, the counterweight moveable relative to the eccentric weight over a range between a first position and a second position;
- a fastener extending from the eccentric weight, through the counterweight and including a head member having a shoulder portion having a diameter substantially the same as the given diameter;
- a biasing member positioned in the bore about the fastener between the fastener head member and the counterweight, the fastener tightened such that the shoulder is within the bore to substantially enclose the biasing member therein, the biasing member generating a biasing force that biases the counterweight toward the first position
- wherein the eccentric weight includes a cavity beginning on the first side of the axis and opening toward the second side of the axis and the counterweight has first and second portions with the bore extending into both portions, each portion and the biasing member having a center of gravity, the portions configured such that in the first position, the first portion extends into the cavity such that the first portion center of gravity is on the first side of the axis, the second portion center of gravity is on the second side of the axis and the biasing member center of gravity is along or on the first side of the axis.
3 more elements
An eccentric assembly for a vibration compacting machine, the eccentric assembly comprising:
- a substantially closed tubular section rotatable about an axis;
- an eccentric weight coupled within the tubular section and having a center of gravity on a first side of the axis;
- a counterweight coupled within the tubular section and having a bore of a given diameter, the counterweight having a center of gravity on a second, opposite side of the axis, the counterweight moveable relative to the eccentric weight over a range between a first position and a second position;
- a fastener extending from the eccentric weight, through the counterweight and including a head member having a shoulder portion having a diameter substantially the same as the given diameter;
- a biasing member positioned in the bore about the fastener between the fastener head member and the counterweight, the fastener tightened such that the shoulder is within the bore to substantially enclose the biasing member therein, the biasing member generating a biasing force that biases the counterweight toward the first position
- wherein the fastener is adjustable such that adjustment of the fastener adjusts the biasing force and the tubular section includes at least one sealable through bore aligned with the fastener for adjustment thereof.
3 more elements
Dependencies are inferred from the claim text.