Drilling apparatus with anti-vibration inertial body
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-003/02
E21B-003/00
F16F-015/315
F16F-015/30
출원번호
US-0702730
(2003-11-07)
발명자
/ 주소
Leppanen,Jarmo
출원인 / 주소
Sandvik Intellectual Property AB
대리인 / 주소
Drinker Biddle &
인용정보
피인용 횟수 :
4인용 특허 :
7
초록▼
A blast-hole drilling rig includes a carriage, a mast disposed on the carriage, and a rotary head mounted on the mast for up-and-down movement. The rotary head includes: a housing forming an internal chamber, a hydraulically driven motor, and a rotation transmission mechanism disposed in the chambe
A blast-hole drilling rig includes a carriage, a mast disposed on the carriage, and a rotary head mounted on the mast for up-and-down movement. The rotary head includes: a housing forming an internal chamber, a hydraulically driven motor, and a rotation transmission mechanism disposed in the chamber. The rotation transmission mechanism includes a gear system having a high-speed power input section operably connected to the motor, and a low-speed power output section adapted for connection to a drill pipe. The rotation transmission mechanism includes an anti-vibrational inertial body forming part of the high-speed power input section for storing rotational energy to even-out rotary speed variations and resist the generation of vibrations during operation. The inertial body includes a downwardly open recess in which the motor casing extends, wherein the motor projects downwardly past a bottom wall of the housing.
대표청구항▼
What is claimed is: 1. A drilling apparatus comprising: a carriage; a mast disposed on the carriage and carrying an up-down feed system; and a rotation mechanism adapted for rotating a drill string, the rotation mechanism mounted to the feed system for up-and-down movement, and comprising: a housin
What is claimed is: 1. A drilling apparatus comprising: a carriage; a mast disposed on the carriage and carrying an up-down feed system; and a rotation mechanism adapted for rotating a drill string, the rotation mechanism mounted to the feed system for up-and-down movement, and comprising: a housing forming an interior chamber, a hydraulically driven motor with a motor casing, and a rotation transmission mechanism disposed in the chamber and including a gear system having a high-speed power input section operably connected to the motor, and a low-speed power output section adapted for connection to a drill pipe section, wherein the rotation transmission mechanism further includes an anti-vibrational inertial body forming part of the high speed power input section for storing rotational energy to even-out rotary speed variations and resist the generation of vibrations during drilling operations, wherein the anti-vibrational inertial body and a high-speed gear of the power input section are both formed by the same piece of material, and wherein the inertial body at least partially encloses a portion of the motor casing. 2. The drilling apparatus according to claim 1, wherein an output shaft of the hydraulically driven motor has gear teeth that mesh with gear teeth formed in the inertial body. 3. A drilling apparatus comprising: a carriage; a mast disposed on the carriage and carrying an up-down feed system; and a rotation mechanism adapted for rotating a drill string, the rotation mechanism mounted to the feed system for up-and-down movement, and comprising: a housing forming an interior chamber, a hydraulically driven motor, and a rotation transmission mechanism disposed in the chamber and including a gear system having a high-speed power input section operably connected to the motor, and a low-speed power output section adapted for connection to a drill pipe section, wherein the rotation transmission mechanism further includes an anti-vibrational inertial body forming part of the high speed power input section for storing rotational energy to even-out rotary speed variations and resist the generation of vibrations during drilling operations, wherein the anti-vibrational inertial body and a high-speed gear of the power input section are both formed by the same piece of material, and wherein the inertial body includes a recess in which a casing of the motor is disposed. 4. The drilling apparatus according to claim 3 wherein the recess includes gear teeth meshing with gear teeth of an output shaft of the motor. 5. The drilling apparatus according to claim 3 wherein the housing includes a downwardly facing bottom wall through which a passage extends, the portion of the inertial body forming the recess being situated within the passage, the recess being downwardly open wherein the motor projects downwardly past the bottom wall. 6. A drilling apparatus comprising: a carriage: a mast disposed on the carriage and carrying an up-down feed system: and a rotation mechanism adapted for rotating a drill string, the rotation mechanism mounted to the feed system for up-and-down movement, and comprising: a housing forming an interior chamber, a hydraulically driven motor, and a rotation transmission mechanism disposed in the chamber and including a gear system having a high-speed power input section operably connected to the motor, and a low-speed power output section adapted for connection to a drill pipe section, wherein the rotation transmission mechanism further includes an anti-vibrational inertial body forming part of the high speed power input section for storing rotational energy to even-out rotary speed variations and resist the generation of vibrations during drilling operations, wherein the anti-vibrational inertial body and a high-speed gear of the power input section are both formed by the same piece of material, wherein the high-speed power input section includes a unit comprised of a high-speed gear and first and second coaxial shaft portions connected to respective opposite sides of the high speed gear and mounted in respective bearings; the inertial body connected to one of the shaft portions, wherein the unit and the inertial body rotate at the same speeds, wherein the inertial mass of the inertial body is greater than that of the unit, and wherein the inertial body includes a recess, the motor including an outer casing projecting into the recess. 7. The drilling apparatus according to claim 6 wherein the inertial mass of the inertial body is at least twice as great as that of the unit. 8. The drilling apparatus according to claim 6 wherein the inertial mass of the inertial body is at least ten times as great as that of the unit. 9. The drilling apparatus according to claim 6 wherein the inertial mass of the inertial body is at least thirty times as great as that of the unit. 10. The drilling apparatus according to claim 6 wherein the unit and the inertial body are integrally formed. 11. A drilling apparatus comprising: a carriage; a mast disposed on the carriage and carrying an up-down feed system; and a rotation mechanism adapted for rotating a drill string, the rotation mechanism mounted to the feed system for up-and-down movement, and comprising: a housing forming an interior chamber and having a bottom side, a hydraulically driven motor projecting downwardly past the bottom side, and a rotation transmission mechanism disposed in the chamber and including a gear system having a high-speed power input section and a low-speed power output section adapted for connection to a drill pipe section, the high-speed power input section including: a high-speed gear, two shafts projecting coaxially from respective opposite sides of the high-speed gear and mounted in respective bearings, and an anti-vibrational inertial body joined to one of the shafts for common rotation with the unit, the inertial body having an inertial mass greater than the combined inertial mass of the high-speed gear and the two shafts, wherein the inertial body includes a downwardly open recess in which a casing and drive shaft of the motor are inserted. 12. The blast-hole drilling apparatus according to claim 11 wherein the high-speed gear, the two shafts, and the inertial body are formed by the same piece of material. 13. A rotary mechanism adapted to transmit rotational movement, comprising: a housing forming an interior chamber, the housing including a bottom wall through which a passage extends, the passage communicating with the chamber; a rotation transmission mechanism disposed in the chamber and including a gear system having: a high-speed power input section including an anti-vibrational inertial body for storing rotational energy, a portion of the inertial body disposed within the passage and including a generally downwardly open recess, and a low-speed power output section connected to the input section; and a hydraulically driven motor including a motor casing mounted in the recess of the inertial body, and operably connected to the high-speed power input section to drive that input section. 14. The rotary mechanism according to claim 13 wherein the hydraulic motor is connected to the inertial body to drive the input section through the inertial body. 15. The rotary mechanism according to claim 13 wherein the high-speed power input section includes a unit comprised of a high-speed gear and first and second coaxial shaft portions connected to respective opposite sides of the high speed gear and mounted in respective bearings; the inertial body connected to one of the shaft portions, wherein the unit and the inertial body rotate at the same speed. 16. The rotary mechanism according to claim 15 wherein the inertial mass of the inertial body is at least ten times that of the unit. 17. The rotary mechanism according to claim 15 wherein the inertial mass of the inertial body is at least thirty times that of the unit.
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이 특허에 인용된 특허 (7)
Herscovici Saul (Waterloo IA), Gearbox with high speed flywheel.
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