[특허]Crawler crane having identical left and right crawler assemblies

Manitowoc Crane Companies, Inc.

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Crawler crane having identical left and right crawler assemblies

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/00
미국특허분류(USC)	180/009.1; 180/305
출원번호	US-0753912 (2001-01-03)
발명자 / 주소	Lakes, Martin
출원인 / 주소	Manitowoc Crane Companies, Inc.
대리인 / 주소	Brinks Hofer Gilson &
인용정보	피인용 횟수 : 1 인용 특허 : 17

초록

A crawler crane having identical left and right crawler assemblies. The left and right crawler assemblies each comprise an identical crawler drive assembly to power the individual crawlers. Each crawler drive assembly comprises a hydraulic drive motor connected to the crawler. Both crawler drive assemblies utilize identical mounting configurations for connecting the hydraulic drive motor to the frame of the crawler.

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1. A crawler vehicle comprising a car body and a plurality of identical crawler assemblies, each said crawler assembly comprising a crawler track supported on a crawler frame, said crawler track being powered by only one drive assembly connected to the crawler frame at a single location spaced away from a center of said crawler assembly, wherein the crawler frame for each crawler assembly comprises an identical track frame weldment, each track frame weldment having a first end and a second end, the first end having a configuration that is different from the second end so as to form a track frame weldment with an asymmetric construction between the first end and the second end.2. The crawler vehicle according to claim 1, wherein the drive assembly for each crawler assembly comprises identical components.3. The crawler vehicle according to claim 1, wherein the drive assembly for each crawler assembly comprises:a) a hydraulic drive motor mounted on said car body, said hydraulic drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses; b) a track drive gear box mounted on said crawler frame and connected to said crawler track, said gear box comprising a right-angle gear set and a speed reduction gear set; and c) a mechanical drive shaft for transmitting power from said hydraulic drive motor to said crawler drive gear box. 4. The crawler vehicle according to claim 3, wherein said mechanical drive shaft comprises a first and a second end, said first end being connected to said hydraulic drive motor and said second end being connected to said right-angle gear set, and wherein both of said connections comprise a universal joint and at least one of said connections is removable to permit disassembly of said crawler assembly from said car body without disconnecting said hydraulic drive motor from said hydraulic pump.5. The crawler vehicle according to claim 1, wherein the drive assembly for each crawler assembly comprises a hydraulic drive motor mounted on said crawler frame, said drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses.6. The crawler vehicle according to claim 5, wherein a track drive gear box is mounted between said hydraulic drive motor and said crawler frame.7. The crawler vehicle according to claim 6, wherein said track drive gear box comprises a right-angle gear set and a speed reduction gear set.8. The crawler vehicle according to claim 1, wherein said crawler vehicle comprises an upper works rotatably mounted on a lower works, said lower works comprising said car body and said plurality of identical crawler assemblies.9. A crawler crane having an upper works rotatably mounted on a lower works, said lower works comprising a car body and a pair of interchangeable crawler assemblies, each said crawler assembly having a first end and a second end, the first end having a configuration that is different from the second end so as to form a crawler assembly with an asymmetric construction between the first end and the second end, said crawler assembly comprising a crawler track supported on a crawler frame, said crawler track being powered by a single drive assembly that is at least partially supported by an end portion of the crawler frame.10. The crawler crane according to claim 9, wherein the drive assembly for each crawler assembly comprises identical components.11. The crawler crane according to claim 9, wherein the crawler frame for each crawler assembly comprises an identical track frame weldment, each track frame weldment having a first end and a second end, the first end having a configuration that is different from the second end so as to form a track frame weldment with an asymmetric construction between the first end and the second end.12. The crawler crane according to claim 9, wherein the drive assembly for each crawler assembly comprises:a) a hydraulic drive motor mounted on said car body, said hydraulic drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses; b) a track drive gear box mounted on said crawler frame and connected to said crawler track, said gear box comprising a right-angle gear set and a speed reduction gear set; and c) a mechanical drive shaft for transmitting power from said hydraulic drive motor to said crawler drive gear box. 13. The crawler crane according to claim 12, wherein said mechanical drive shaft comprises a first and a second end, said first end being connected to said hydraulic drive motor and said second end being connected to said right-angle gear set, and wherein both of said connections comprise a universal joint and at least one of said connections is removable to permit disassembly of said crawler assembly from said car body without disconnecting said hydraulic drive motor from said hydraulic pump.14. The crawler crane according to claim 9, wherein the drive assembly for each crawler assembly comprises a hydraulic drive motor mounted on said crawler frame, said drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses.15. The crawler crane according to claim 14, wherein a track drive gear box is mounted between said hydraulic drive motor and said crawler frame.16. The crawler crane according to claim 15, wherein said track drive gear box comprises a right-angle gear set and a speed reduction gear set.17. A crawler vehicle comprising a car body, a first crawler assembly and a second crawler assembly, said first crawler assembly being removably mounted to a first side of said car body, said second crawler assembly being removably mounted to a second side of said car body, said first crawler assembly and said second crawler assembly each comprising a crawler track supported on a crawler frame, said crawler frame having a first end and a second end, said crawler track being powered by a drive assembly comprising a hydraulic drive motor, said hydraulic drive motor being mechanically coupled to the crawler track near the first end of the crawler frame only, wherein said first crawler assembly is configured to be mountable on said second side of said car body and said second crawler assembly is configured to be mountable on said first side of said car body, and wherein the crawler frame for said first crawler assembly and said second crawler assembly each comprise an identical track frame weldment, each track frame weldment having a first end and a second end, the first end having a configuration that is different from the second end so as to form a track frame weldment with an asymmetric construction between the first end and the second end.18. The crawler vehicle according to claim 17, wherein the drive assembly for said first crawler assembly and said second crawler assembly each comprise identical components.19. The crawler vehicle according to claim 17, wherein the hydraulic drive motor is mounted on said car body and is connected to a hydraulic pump by a plurality of hydraulic hoses, a track drive gear box is mounted on the crawler frame and is connected to the crawler track, said gear box comprising a right-angle gear set and a speed reduction gear set, and a mechanical drive shaft is connected between the hydraulic drive motor and the gear box.20. The crawler vehicle according to claim 19, wherein said mechanical drive shaft comprises a first and a second end, said first end being connected to said hydraulic drive motor and said second end being connected to said right-angle gear box, and wherein both of said connections comprise a universal joint and at least one of said connections is removable to permit disassembly of said first crawler assembly or said second crawler assembly from said car body without disconnecting said hydraulic drive motor from said hydraulic pump.21. The crawler vehicle according to claim 18, wherein the hydraulic drive motor for each drive assembly is mounted on said crawler frame, said drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses.22. The crawler vehicle according to claim 21, wherein a track drive gear box is mounted between said hydraulic drive motor and said crawler frame.23. The crawler vehicle according to claim 22, wherein said track drive gear box comprises a right-angle gear set and a speed reduction gear set.24. The crawler vehicle according to claim 17, wherein said crawler vehicle comprises an upper works rotatably mounted on a lower works, said lower works comprising said car body, said first crawler assembly and said second crawler assembly.25. A crawler crane having an upper works rotatably mounted on a lower works, a boom pivotally mounted on said upper works, a load hoist line for lifting loads, said lower works comprising two independently powered crawler assemblies each mounted on a car body, each said crawler assembly being of identical design and comprising a crawler track supported by a crawler frame, wherein the crawler frame for each crawler assembly comprises an identical track frame weldment, each track frame weldment having a first end and a second end, the first end having a configuration that is different from the second end so as to form a track frame weldment with an asymmetric construction between the first end and the second end, and wherein each said crawler track is powered by a unitary drive assembly comprising:a) a single hydraulic drive motor mounted on said car body, said drive motor being connected to a hydraulic pump by a plurality of hydraulic hoses; b) a track drive gear box mounted on only one end of said crawler frame and connected to said crawler track, said gear box comprising a right-angle gear set and a speed reduction gear set; and c) a mechanical drive shaft for transmitting power from said hydraulic drive motor to said crawler drive gear box, said drive shaft comprising a first and a second end, said first end being connected to said drive motor, said second end being connected to said right-angle gear set, wherein both of said connections comprise a universal joint and at least one of said connections is removable to permit disassembly of said crawler assembly from said car body without disconnecting said hydraulic drive motor from said hydraulic pump. 26. The crawler crane according to claim 25, wherein the drive assembly for each crawler assembly comprises identical components.

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Crawler crane having identical left and right crawler assemblies

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