VIBRATORY ROAD ROLLER

• US 3,580,147 A
• Filed: 08/09/1968
• Issued: 05/25/1971
• Est. Priority Date: 08/25/1967
• Status: Expired due to Term

• Current Assignee: Kaltenegger Benno
• Original Assignee: Kaltenegger Benno
• Inventors: KALTENEGGER BENNO
• Application Number:
  US04/751,429
• Time in Patent Office: 1,019 Days
• US Class Current: 404/117
• CPC Class Codes: E01C 19/283 pedestrian-controlled, e.g. with safety arrangements for operator

Abstract

This provides a vibratory road roller having at least two driven roller drums lying one behind the other in the direction of travel. The drums are carried by a rigid frame. The drums which are placed one behind the other are of different weights. In one embodiment of the invention the roller drums are also of different lengths. At least one of the roller drums has a vibration shaft which carries eccentric weights.

Claims

1. A vibratory road roller comprising:

a. axle shafts mounted in a rigid frame structure;

b. said shafts being laterally displaced one behind the other in the direction of travel;

c. two roller drums mounted on said shafts;

d. one of said drums being considerably heavier than the other drums;

e. vibration-producing means including eccentric weights mounted on each of the shafts carrying the roller drums;

f. the eccentric weights on the shaft carrying the heavier roller being heavier than the eccentric weights on the shaft carrying the lighter roller drums; and

g. motor means to supply power to each of the roller drums.

2. A vibratory road roller comprising:

a. axle shafts mounted in a rigid frame structure;

b. said shafts being laterally displaced one behind the other in the direction of travel;

c. roller drums having substantially equal diameters mounted on said shafts;

d. one of said roller drums being considerably heavier than another of said drums;

e. vibration-producing means attached to at least the shaft of the heavier of said roller drums; and

f. motor means to supply power to each of the roller drums.

3. A vibratory road roller as defined in claim 2 wherein:

said vibration-producing means include eccentric weights mounted on at least one of the shafts.

4. A vibratory road roller as defined in claim 3 wherein:

there are two roller drums; and

said eccentric weights are mounted on the shaft carrying the heavier roller drum.

5. A vibratory road roller as defined in claim 3 wherein:

there are two roller drums; and

said heavier roller drum is longer than said lighter roller drum.

6. A vibratory road roller as defined in claim 2 wherein:

there are two roller drums; and

said heavier roller drum is about 30 percent to 50 percent heavier than the lighter roller drum.

7. A vibratory road roller as defined in claim 2 wherein:

there are two roller drums; and

said heavier roller drum is over 50 percent heavier than the lighter roller drum.

8. A vibratory road roller as defined in claim 2 wherein:

there are two roller drums; and

said heavier roller drum has a weight of at least 50 percent of the overall weight of the road roller.

9. A vibratory road roller comprising:

a. means mounting two axle shafts laterally displaced one behind the other in the direction of travel in a frame structure;

b. a roller drum having a tire mounted on each shaft;

c. one of said roller drum tires being considerably heavier than the other roller drum tire;

d. vibration-producing means attached to at least the shaft of the heavier roller drums;

e. said vibration-producing means including at least one eccentric weight mounted on each of the axle shafts;

f. the eccentric weight on the shaft carrying the heavier roller drum tire being heavier than the eccentric weight on the shaft carrying the lighter roller drum tire; and

g. the ratio of the weight of the heavier eccentric weight to the weight of the lighter eccentric weight corresponds to the ratio of the heavier roller drum tire weight to the lighter roller drum tire weight.

10. A vibratory road roller as defined in claim 9 further including:

a clutch means to connect said motor means to drive either of the shafts carrying the eccentric weights.

11. A vibratory road roller as defined in claim 9 wherein:

said motor means is located above the lighter roller drum.

12. A vibratory road roller as defined in claim 9 further including:

a gearbox means for housing gear means which connect the motor means to said roller drums; and

said motor means and said gearbox means being located adjacent to each other in the middle of the road roller.

13. A vibratory road roller comprising:

a. means mounting two axle shafts laterally displaced one behind the other in the direction of travel in a frame structure;

b. roller drums being mounted on said shafts;

c. one of said roller drums being considerably heavier than another roller drum;

d. the heavier drum being longer than the lighter drum;

e. said drums having end faces which are aligned on the drive side of the road roller;

f. said frame structure having a stepped configuration on the other side to follow the offset ends of the longer and shorter drums;

g. vibration-producing means attached to at least the shaft of the heavier roller drum; and

h. motor means to supply power to each of the roller drums.

14. A vibratory road roller comprising:

a. a frame structure including two frame units having two roller drums mounted on axle shafts laterally displaced one behind the other in the direction of travel within each frame unit and means connecting said frame units;

b. one of said rollers on said laterally displaced shafts being considerably heavier than the other roller drum in each said frame unit;

c. said heavier roller drum being longer than said lighter roller drum within each said frame unit;

d. said roller drums having end faces which are aligned on the drive side of the road roller;

e. each said frame unit having a stepped configuration on the other side to follow the offset sides of the longer and shorter roller drums within each unit;

f. vibration-producing means attached to at least one of the shafts; and

g. motor means to supply power to one roller drum.

15. A vibratory road roller as defined in claim 14 wherein:

said longer roller drums are diagonally disposed within said road roller frame structure; and

said shorter roller drums are diagonally disposed within said road roller frame structure.

16. A vibratory road roller as defined In claim 14 wherein:

said frame unit connecting means include elastic coupling members spaced respectively to the front and rear of the front and rear roller drums.