# US 4,384,530 A · On-track, off-track track maintenance machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,384,530 A - Document ID: US4384530A - Status: Granted - Kind: A - Application number: 06/266,694 - Filed: 1981-05-26 - Granted: 1983-05-24 - Earliest claimed: 1980-06-27 - Assignees: Franz Plasser Bahnbaumas-Chinen-Industriegesellschaft m.b.H. - Inventors: Josef Theurer - Web page: https://patentgrep.com/patent/US4384530A ## CPC - E01B 27/026: {by means of driven tools, e.g. rotating brooms or digging devices} - B60F 1/04: with rail and road wheels on different axles - E01B 27/17: combined with means for lifting, levelling or slewing the track - E01B 2203/086: Rotating brooms - E01B 2203/10: Track-lifting or-lining devices or methods - E01B 2203/12: Tamping devices - E01B 2203/141: on the track to be treated - E01B 2203/145: on the ballast - E01B 2203/148: having wheelsets that can be displaced horizontally or vertically - E01B 2203/16: Guiding or measuring means, e.g. for alignment, canting, stepwise propagation - E01B: PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS (derailing or rerailing blocks on track, track brakes or retarders B61K) - B60F: VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; VEHICLES CAPABLE OF TRAVELLING IN OR ON DIFFERENT MEDIA, e.g. AMPHIBIOUS VEHICLES (air-cushion vehicles B60V) ## Abstract An on-track, off track track maintenance machine comprises a first machine frame, undercarriages for supporting this frame for mobility on a track, an undercarriage vertically adjustably mounted on this frame for selectively supporting the frame for mobility on the road, a track tractor including a second machine frame, a single undercarriage capable of supporting the truck tractor for mobility on the road, a drive for moving the machine, tools mounted on the machine for track maintenance, a transversely extending, horizontal pivot linking the facing machine frame ends and arranged between the undercarriages supporting the first machine frame and the truck tractor for mobility on the road, and a power drive vertically adjustably connecting the truck tractor and the first machine frame and supporting the truck tractor on first machine frame in a vertically adjusted position. ## Claims ### Claim 1 An on-track, off-track track maintenance machine comprising (a) a first machine frame, (b) undercarriages capable of supporting the first machine frame for mobility on a track, (c) an undercarriage vertically adjustably mounted on the first machine frame for selectively supporting the first machine frame for mobility on a road, (d) a truck tractor including a second machine frame, (1) the machine frames having facing ends, (e) a single undercarriage capable of supporting the truck tractor for mobility on the road, (f) drive means for moving the machine, (g) tool means for track maintenance, (h) a transversely extending, horizontal pivot linking the machine frame ends and arranged between the undercarriages supporting the first machine frame and the truck tractor for mobility on the road, and (i) a power drive vertically adjustably connecting the truck tractor and the first machine frame and supporting the truck tractor on the first machine frame in a vertically adjusted position. ### Claim 2 (depends on 1) The on-track, off-track track maintenance machine of claim 1, wherein the first machine frame has a frame portion projecting beyond the pivot and further comprising a support mounting on the projecting frame portion, the power drive being supported on the support and the drive means includes a drive on the truck tractor for moving the machine. ### Claim 3 (depends on 2) The on-track, off-track track maintenance machine of claim 2, wherein the pivot is arranged between the undercarriages capable of supporting the first machine frame for mobility on the track. ### Claim 4 (depends on 1, 2, 3) The on-track, off-track track maintenance machine of claim 1, 2 or 3, further comprising carrier arms vertically adjustably mounting the undercarriage for supporting the first machine frame on the road, the carrier arms being mounted on the first machine frame on pivots defining a substantially vertical plane with the horizontal pivot linking the machine frame ends. ### Claim 5 (depends on 4) The on-track, off-track track maintenance machine of claim 4, further comprising power drives for pivoting the carrier arms on the first machine frame. ### Claim 6 (depends on 1) The on-track, off-track track maintenance machine of claim 1, wherein the second machine frame has a frame portion projecting beyond the pivot and further comprising a support mounted on the projecting frame portion, the power drive being supported on the support. ### Claim 7 (depends on 6) The on-track, off-track track maintenance machine of claim 6, wherein the pivot is arranged between one of the undercarriages capable of supporting the first machine frame for mobility on the track and the single undercarriage capable of supporting the truck tractor for mobility on the road. ### Claim 8 (depends on 1) The on-track, off-track track maintenance machine of claim 1, wherein the first machine frame and the truck tractor carry operator's cabs, one of the undercarriages capable of supporting the first machine frame for mobility on the track is spaced farther from the center of gravity of the first machine frame than from the center of gravity of the truck tractor, and the drive means includes a drive connected to the one undercarriage. ### Claim 9 (depends on 8) The on-track, off-track maintenance machine of claim 8, wherein the tool means comprises a ballast tamping unit, a track lifting unit and a reference system mounted on the first machine frame for leveling and tamping the track. ### Claim 10 (depends on 8, 9) The on-track, off-track track maintenance machine of claim 8 or 9, wherein the power drive is a centrally arranged hydraulic drive. ### Claim 11 (depends on 1) The on-track, off-track track maintenance machine of claim 1, wherein the second machine frame is substantially forkshaped and holds the facing end of the first machine frame.