초록 ▼

A vibratory compaction plate utilizes pairs of front and rear shock absorbing mounts, each pair of which is set at a different angle with respect to the horizontal plate to optimize the respective shear and compression capabilities and optimize performance. A front mounted vibratory exciter and a re

A vibratory compaction plate utilizes pairs of front and rear shock absorbing mounts, each pair of which is set at a different angle with respect to the horizontal plate to optimize the respective shear and compression capabilities and optimize performance. A front mounted vibratory exciter and a rear mounted engine provide different performance capabilities that are optimized by the mounting angles. A flat sheet metal plate and sheet metal frame permit the angles at which the shock mounts are oriented to be adjusted along laterally extending end lines to fine tune performance.

대표청구항 ▼

1. A compaction apparatus comprising: a vibratory plate of the type used in surface compaction, the vibratory plate supported on a frame with elastomer shock mounts, the frame carrying an engine, a drive belt operatively connecting the engine and a vibratory exciter mounted on the vibratory plate, a

1. A compaction apparatus comprising: a vibratory plate of the type used in surface compaction, the vibratory plate supported on a frame with elastomer shock mounts, the frame carrying an engine, a drive belt operatively connecting the engine and a vibratory exciter mounted on the vibratory plate, and a handle attached to the frame;the vibratory plate having a planar bottom surface and an upwardly angled front edge defining a lower front attachment face for front shock mounts, and an upwardly angled rear edge defining a lower rear attachment face for rear shock mounts;the frame having a generally flat front edge spaced from and parallel to the lower front attachment face of the vibratory plate and defining an upper front attachment face for the front shock mounts, and an upwardly angled rear edge spaced inwardly from and parallel to the lower rear attachment face of the vibratory plate and defining an upper rear attachment face for rear shock mounts;a pair of front shock mounts positioned between the lower front attachment face and the upper front attachment face and attached thereto, a central axis of each front shock mount extending perpendicular to the lower front attachment face and the upper front attachment face; anda pair of rear shock mounts positioned between the lower rear attachment face and upper rear attachment face and attached thereto, a central axis of each rear shock mount extending perpendicular to the lower rear attachment face and the upper rear attachment face. 2. The compaction apparatus as set forth in claim 1, wherein the lower front edge of the vibratory plate is an integral extension of the vibratory plate and is joined to the vibratory plate along a laterally extending lower front bend line set to selectively position the central axes of the front shock mounts at an angle in a range of 20° to 40°, and the upper front edge of the frame is an integral extension of the frame and is joined to the frame along an upper front bend line set to position the front edge of the frame parallel to the lower front edge of the vibratory plate. 3. The compaction apparatus as set forth in claim 1, wherein the lower rear edge of the vibratory plate is an integral extension of the vibratory plate and is connected to the vibratory plate along a lower rear bend line set to selectively position the central axes of the rear shock mounts at an angle in a range of 50° to 90°, and the upper rear edge of the frame is an integral extension of the frame and is joined to the frame along an upper rear bend line set to position the rear edge of the frame parallel to the lower rear edge of the vibratory plate. 4. The compaction apparatus as set forth in claim 1, wherein the front shock mounts have a durometer in the range of about 25 to 45 Shore A. 5. The compaction apparatus as set forth in claim 1, wherein the rear shock mounts have a durometer in the range of about 25 to 45 Shore A. 6. The compaction apparatus as set forth in claim 1, wherein the front shock mounts are positioned to operate primarily in shear. 7. The compaction apparatus as set forth in claim 1, wherein the rear shock mounts are positioned to operate primarily in compression. 8. The compaction apparatus as set forth in claim 1, wherein the engine is mounted atop the frame near the rear end thereof, and the exciter is mounted near the front end of the vibratory plate; and wherein the drive belt extends downwardly and forwardly from the engine to the exciter at an angle of about 30°. 9. The compaction apparatus as set forth in claim 1, wherein the upwardly angled front edge of the vibratory plate is positioned forward of the upwardly angled rear edge of the vibratory plate relative to directional movement of the vibratory plate toward the upwardly angled front edge of the vibratory plate from the upwardly angled rear edge of the vibratory plate. 10. The compaction apparatus as set forth in claim 9, wherein the front edge of the frame is spaced inwardly from and parallel to the lower front attachment face of the vibratory plate. 11. A compaction apparatus comprising: a vibratory plate of the type used in surface compaction, the vibratory plate supported on a frame with elastomer shock mounts, the frame carrying an engine, a drive belt operatively connecting the engine and a vibratory exciter mounted on the vibratory plate, and a handle attached to the frame;the vibratory plate having a planar bottom surface and an upwardly angled front edge defining a lower front attachment face for front shock mounts, and an upwardly angled rear edge defining a lower rear attachment face for rear shock mounts, wherein the upwardly angled front edge of the vibratory plate is positioned forward of the upwardly angled rear edge of the vibratory plate relative to directional movement of the vibratory plate toward the upwardly angled front edge of the vibratory plate from the upwardly angled rear edge of the vibratory plate;the frame having a generally flat front edge spaced from and parallel to the lower front attachment face of the vibratory plate and defining an upper front attachment face for the front shock mounts and an upwardly angled rear edge spaced inwardly from and parallel to the lower rear attachment face of the vibratory plate and defining an upper rear attachment face for rear shock mounts;a pair of front shock mounts positioned between the lower front attachment face and the upper front attachment face and attached thereto, a central axis of each front shock mount extending perpendicular to the lower front attachment face and the upper front attachment face such as to cause the front shock mounts to operate primarily in shear; anda pair of rear shock mounts positioned between the lower rear attachment face and upper rear attachment face and attached thereto, a central axis of each rear shock mount extending perpendicular to the lower rear attachment face and the upper rear attachment face such as to cause the rear shock mounts to operate primarily in compression. 12. The compaction apparatus as set forth in claim 11, wherein the frame comprises: a recessed rear planar engine mounting surface and a raised front surface joined to the engine mounting surface by a generally vertical connecting surface;the raised front surface extending downwardly and forwardly and terminating in said flat front edge;said flat front edge extending generally perpendicular to the raised front surface along a front bend line;the engine mounting surface extending rearwardly from the connecting surface and terminating in said rear edge; and,said rear edge extending at an acute angle to the engine mounting surface along a rear bend line. 13. The compaction apparatus as set forth in claim 11, wherein the front edge of the frame is spaced inwardly from and parallel to the lower front attachment face of the vibratory plate. 14. A compaction apparatus comprising: a vibratory plate of the type used in surface compaction, the vibratory plate supported on a frame with elastomer shock mounts, the frame carrying an engine, a drive belt operatively connecting the engine and a vibratory exciter mounted on the vibratory plate, and a handle attached to the frame;the vibratory plate having a planar bottom surface and an upwardly angled front edge defining a lower front attachment face for front shock mounts, and an upwardly angled rear edge defining a lower rear attachment face for rear shock mounts;the frame having a generally flat downwardly angled front edge spaced from and parallel to the lower front attachment face of the vibratory plate and defining an upper front attachment face for the front shock mounts, and an upwardly angled rear edge spaced inwardly from and parallel to the lower rear attachment face of the vibratory plate and defining an upper rear attachment face for rear shock mounts;a pair of front shock mounts positioned between the lower front attachment face and the upper front attachment face and attached thereto, a central axis of each front shock mount extending perpendicular to the lower front attachment face and the upper front attachment face;a pair of rear shock mounts positioned between the lower rear attachment face and upper rear attachment face and attached thereto, a central axis of each rear shock mount extending perpendicular to the lower rear attachment face and the upper rear attachment face;wherein the lower front edge of the vibratory plate is an integral extension of the vibratory plate and is joined to the vibratory plate along a laterally extending lower front bend line, and the upper front edge of the frame is an integral extension of the frame and is joined to the frame along an upper front bend line and wherein the upper front edge of the frame is parallel to the lower front edge of the vibratory plate; and,wherein the lower rear edge of the vibratory plate is an integral extension of the vibratory plate and is joined to the vibratory plate along a lower rear bend line, and the upper rear edge of the frame is an integral extension of the frame and is joined to the frame along an upper rear bend line and wherein the upper rear edge of the frame is parallel to the lower rear edge of the vibratory plate. 15. The compaction apparatus as set forth in claim 14, wherein the central axis of each front shock mount extending perpendicular to the lower front attachment face and the upper front attachment face is at a first acute angle from the plane of the horizontal bottom surface of the vibratory plate in the range of about 20° to 40°. 16. The compaction apparatus as set forth in claim 14, wherein the central axis of each rear shock mount extending perpendicular to the lower rear attachment face and the upper rear attachment face is at a second acute angle from the plane of the horizontal bottom surface in the range of about 50° to 90°. 17. The compaction apparatus as set forth in claim 14, wherein the upwardly angled front edge of the vibratory plate is positioned forward of the upwardly angled rear edge of the vibratory plate relative to directional movement of the vibratory plate toward the upwardly angled front edge of the vibratory plate from the upwardly angled rear edge of the vibratory plate. 18. The compaction apparatus as set forth in claim 17, wherein the front edge of the frame is spaced inwardly from and parallel to the lower front attachment face of the vibratory plate.