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US 5,203,101 AGranted
Digging chain vibratory system
OwnerJohn F. Bryaninventor
Life of this patent
Estimating the term…
Abstract
The digging apparatus support boom of a continuous excavating machine is vibrated in a directional mode so as to enhance digging efficiency. Directionally compliant mounting of the boom isolates this vibration from the machine proper while allowing unimpaired application of digging torque and crowd forces.
Claims22
A boom type continuous excavating machine comprising:
- a main frame:
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- digging means in rotatable assembly with said support boom for engaging the ground, said digging means including peripheral cutting means for continuously cutting and excavating ground material;
- drive means for powering continuous rotation of said digging means;
- connecting means adjacent said boom upper end connecting said support boom to said main frame for pivotal movement from a first position in which said digging means engages the ground along a cutting surface to a second position in which said digging means is raised above the ground, the assembly of said support boom and said digging means having a center of percussion spaced from said connecting means;
- actuating means connecting said main frame to said support boom at a position adjacent said upper end for pivoting said boom assembly between said first and second positions;
- and
- directionally oriented vibration exciting means having direction of vibration, substantially perpendicular to a radial line formed by said center of percussion and said pivotal connecting means, and substantially aligned with said center of percussion.
6 more elements
A boom type continuous excavating machine comprising:
- a main frame;
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- digging means in rotatable assembly with said support boom for engaging the ground, said digging means including peripheral cutting means for continuously cutting and excavating ground material;
- drive means for powering continuous rotation of said digging means;
- a pivotal connection to said main frame adjacent said support boom assembly upper end for rotating said boom assembly from a first position in which said digging means engages the ground along a cutting surface to a second position raising said digging means above the ground, the assembly of said support boom and said digging means having a center of percussion spaced from said pivotal connection and said connection further comprising directionally resilient means for permitting load induced displacement perpendicular to a radial line formed by said center of percussion and said connection and resisting such displacement parallel to said plane;
- and
- actuating means connecting said main frame to said support boom at a position adjacent said upper end for pivoting said boom assembly between said first and second positions.
5 more elements
A boom type continuous excavating machine comprising:
- a main frame;
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- digging means in rotatable assembly with said support boom for engaging the ground, said digging means including peripheral cutting means for continuously cutting and excavating ground material;
- drive means for powering continuous rotation of said digging means;
- a pivotal connection to said main frame adjacent said boom assembly upper end for rotating said boom assembly from a first position in which said digging means engages the ground along a cutting surface to a second position raised above the ground;
- a hydraulic cylinder having first and second ends connected to said main frame and said support boom alternatively for rotating said boom assembly about said pivotal connection between said first and second positions;
- an elongate inner member axially extending from said cylinder first end;
- a tubular outer member axially encompassing the longitudinal surfaces of said inner member so as to allow clearance therebetween;
- and
- a resilient elastomeric intermediate member of substantially uniform thickness bonding said outer member to said inner member along the cooperating longitudinal surfaces thereof so as to cushion dynamic axial loading of said hydraulic cylinder.
8 more elements
A boom type continuous excavating machine comprising:
- a main frame;
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- a circular rock saw in rotatable assembly with said support boom;
- cutting teeth at the periphery of said rock saw;
- drive means for powering continuous rotation of said rock saw;
- connecting means adjacent said boom upper end connecting said support boom to said main frame for pivotal movement from a first position in which said rock saw engages the ground along a cutting surface to a second position in which said rock saw is raised above the ground, the assembly of said support boom and said rock saw having a center of percussion spaced from said connecting means;
- hydraulic cylinder means connecting said main frame to said support boom at a position adjacent said upper end for pivoting said boom assembly about said connecting means between said first and second positions;
- and
- directionally oriented vibration exciting means having a direction of vibration, substantially perpendicular to a radial line formed by said center of percussion and said pivotal connecting means, and substantially aligned with said center of percussion.
7 more elements
A boom type continuous excavating machine comprising:
- a main frame;
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- a circular rock saw in rotatable assembly with said support boom;
- cutting teeth at the periphery of said rock saw;
- drive means for powering continuous rotation of said digging means;
- a pivotal connection to said main frame adjacent said support boom upper end for rotating said boom assembly from a first position, in which said rock saw engages the ground along a cutting surface, to a second position raising said rock saw above the ground, the assembly of said support boom and said rock saw having a center of percussion spaced from said pivotal connection, said connection further comprising directionally resilient means for permitting load induced displacement perpendicular to a radial line formed by said center of percussion and said pivotal connection and resisting such displacement parallel thereto;
- actuating means connecting said main frame to said support boom at a position adjacent said upper end for pivoting said boom assembly about said connecting means between said first and second positions;
- and
- directionally oriented vibration exciting means having a direction of vibration, substantially perpendicular to said radial line and substantially aligned with said center of percussion.
7 more elements
A boom type continuous excavating machine comprising:
- a main frame;
- an undercarriage supporting said main frame for forward and reverse movement along the ground;
- a support boom having upper and lower ends;
- a circular rock saw in rotatable assembly with said support boom for engaging the ground, said rock saw including peripheral cutting means for continuously cutting and excavating ground material;
- drive means for powering continuous rotation of said rock saw;
- a pivotal connection to said main frame adjacent said boom assembly upper end for rotating said boom assembly from a first position in which said rock saw engages the ground along a cutting surface to a second position raised above the ground;
- a hydraulic cylinder having first and second ends connected to said main frame and said support boom alternatively for rotating said boom assembly about said pivotal connection between said first and second positions;
- an elongate inner member axially extending from said first end;
- a tubular outer member axially encompassing the longitudinal surfaces of said inner member so as to allow clearance therebetween;
- and
- a resilient elastomeric intermediate member of substantially uniform thickness bonding said outer member to said inner member along the cooperating longitudinal surfaces thereof so as to cushion dynamic axial loading of said hydraulic cylinder.
8 more elements
Dependencies are inferred from the claim text.