Rotating power head of coaxial space movable tooth transmission drill
A technology of movable tooth transmission and power head, which is applied in the direction of rotary drilling rig, drilling equipment, earthwork drilling and production, etc. It can solve the problems of poor dynamic balance characteristics, large radial size, low center of mass, etc., and achieve small radial size, transmission Large torque, easy disassembly and assembly
Inactive Publication Date: 2013-01-23
HUNAN UNIV OF ARTS & SCI
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Problems solved by technology
The rotary power head of the drilling rig is one of the key components of the drilling rig. Its transmission device requires light weight and low center of mass. The high-speed cutting drill rotary power head requires good dynamic balance characteristics and a wide range of transmission ratios. However, the existing general reducer has a large radial size. Does not meet the requirements of use, the movable tooth reducer is a one-tooth difference eccentric wheel structure, the dynamic balance characteristic is poor, and the rotary power head needs to be specially designed
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[0012] The technical content of the present invention will be further described in conjunction with the accompanying drawings.
[0013] Such as figure 1 and 2 As shown, the motor 1 is fixed on the frame 2 and connected with the input cam 3, the input cam 3 is provided with an input shaft hole, the end faces of the input cam 3 and the fixed cam 5 are evenly distributed along the circumference with ball sockets, the input cam 3, isolation The cover ring 12, the steel ball 4 and the fixed cam 5 form a movable tooth speed change mechanism, the fixed cam 5 is fixed on the frame 2, the output shaft 10 is connected with the isolation cover ring 12 by keys or splines or profiles, and the output shaft 10 passes through the bearing A11 is supported on the fixed cam 5 and is supported on the input cam 3 through bearings B14 and C16. There is an air inlet hole on the air chamber 7. The air chamber 7 is fixed on the fixed cam 5 through the flange 6. The seals A8 and B9 are in contact with...
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The invention provides a rotating power head of a coaxial space movable tooth transmission drill. A motor is fixed on a rack and connected with an input cam, an input shaft hole is arranged in the input cam, ball sockets are uniformly arranged on the circumferences of the upper edges of the edge surfaces of the input cam and a fixed cam, the input cam, an isolating cover ring, steel balls and thefixed cam form a movable tooth transmission mechanism, and the fixed cam is fixed on the rack. An output shaft is connected with the isolating cover ring by using a flat key or a spline or a profile,and the output shaft is supported on the fixed cam by a bearing A and supported on the input cam through a bearing B and a bearing C. An air inlet is arranged on an air chamber, the air chamber is fixed on the fixed cam through a flange, a seal A and a seal B are matched with the air chamber and the output shaft, a radial hole on the output shaft is communicated with the air chamber, and an internally threaded hole is arranged on the output shaft. The device overcomes the defects of the traditional speed reducer and the rotating power head, provides a universal series to the speed reducer andprovides a rock drilling machine rotating power head which has the advantages of convenience for disassembly, small radial size and large transmission torque and is suitable for heavy loads.
Description
technical field [0001] The invention relates to a rock drilling mechanical equipment, in particular to a rotary power head of a coaxial space movable tooth transmission drilling rig. Background technique [0002] All kinds of drilling rigs are widely used in blast hole drilling operations in metallurgy, railways, mines, building materials, highways and other projects. The rotary power head of the drilling rig is one of the key components of the drilling rig. Its transmission device requires light weight and low center of mass. The high-speed cutting drill rotary power head requires good dynamic balance characteristics and a wide range of transmission ratios. However, the existing general reducer has a large radial size. It does not meet the requirements of use. The movable tooth reducer is a one-tooth difference eccentric wheel structure, with poor dynamic balance characteristics, and the rotary power head needs to be specially designed. Contents of the invention [0003]...
Claims
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IPC IPC(8): E21B3/02
Inventor 罗佑新文会军周宇
Owner HUNAN UNIV OF ARTS & SCI