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70results about How to "Few teeth" patented technology

Processing method of involute of gear with large module and a few teeth

InactiveCN102848159ALarge negative shiftReduce manufacturing costGear grindingHobbing
The invention relates to a processing method of an involute of a gear with large module and a few teeth. The method includes forging process; semi-finish turning processing: processing is performed on a lathe, and inner holes, addendum circles and datum end faces are finished during one clamping; hobbing processing: a standard hob is adopted for the hobbing processing, and a gear grinding allowance in a common normal line is provided; rough gear grinding processing: the whole gear is processed out according to dimensions, corresponding deep arcs are processed at tooth roots according to the common normal line allowance, and the diameter of a starting circle of the involute is measured; carburization quenching processing: carburization quenching is performed on teeth surfaces, non-seeping surfaces are subjected to coating protection; finish turning processing: processing is performed on the lathe, and the datum end faces and the inner holes are finished during one clamping; and gear grinding processing : gear grinding is performed on a gear grinding machine, and the diameter of the starting circle of the involute is measured. The processing method is simple, low in production cost and suitable for processing gears with large module, a few teeth and large negative addendum modification.
Owner:重庆市华丰动力配件有限公司

Rotary land leveler operating device based on short-tooth shape

The invention relates to a rotary land leveler operating device based on a short-tooth shape. The device consists of a traction frame, a rotary mechanism and a shovel blade body assembly; the rotary mechanism consists of a hydraulic motor, a worm wheel / gear speed reduction box and a rotary gear ring; the hydraulic motor and the worm wheel / gear speed reduction box are integrated into a whole; a co-axial pinion is arranged on a worm wheel of the worm wheel / gear speed reduction box; the co-axial pinion is engaged with the rotary gear ring; the rear end of the traction frame lifts the rotary gear ring to the lower part of the traction frame through a guide plate; the rotary gear ring can do rotary motion on the lower part of the traction frame; the shovel blade body assembly consists of a support, an angle retainer and a shovel blade; the support is fixed on the rotary gear ring; the angle retainer is fixed on an angle retainer installation shaft positioned on the support; the shovel blade is connected with a horizontal hydraulic oil cylinder and arranged on a sliding rail; the angle retainer is connected with one end of the sliding rail; and the rotary gear ring can be replaced by a rotary support structure with an internal ring and an external ring, and a connection mode is also required to be correspondingly adjusted. By the device, a land leveler rotary mechanism is simple in structure and has long service life, the reliability of the rotary land leveler working device is greatly improved, and the reliability of the whole land leveler is greatly and correspondingly improved.
Owner:TONGJI UNIV

Large displacement high pressure gear pump with driving and driven wheels in different sizes

InactiveCN105952637AImprove the state of radial stressReduce volumeRotary piston pumpsRotary piston liquid enginesDrive wheelGear pump
The invention discloses a large displacement high pressure gear pump with driving and driven wheels in different sizes. A conventional external engaging gear pump is relatively great in flow pulsation, high in noise, low in efficiency and low in pressure. The large displacement high pressure gear pump with driving and driven wheels in different sizes disclosed by the invention comprises a pump body, a front cover and a rear cover connected to the pump body, a pair of gear pairs with driving and driven wheels in different sizes and two symmetrical floating side plates, wherein two roller bearings are arranged at the driving wheel, two DU bearings are arranged at the driven wheel, a set of E-shaped seal ring is arranged on the back of each floating side plate, and an outer seal ring is arranged between the pump body and the front cover and between the pump body and the rear cover, respectively. When the gear pump disclosed by the invention is in a large displacement high pressure operation, the bearing areas of the pump body and the front and back covers are effectively reduced, and the stress environments of parts such as gears, the floating side plates and bearings are greatly improved, so that the working pressure of the gear pump is improved to 1.5 times of that of a common gear pump, the rated working pressure of the gear pump reaches 16MPa and the highest pressure of the gear pump reaches 20MPa.
Owner:江苏国瑞液压机械有限公司

Single-eccentric short transmission chain speed reducer

The invention discloses a single-eccentric short transmission chain speed reducer. The single-eccentric short transmission chain speed reducer comprises a fixed main body, a bearing sleeve, a power input shaft, a power output shaft and a duplicate gear; the power input shaft comprises positive axis parts at the two ends and an off-axis part in the middle, the axes of the positive axis parts and the off-axis part do not coincide, the duplicate gear is arranged on the off-axis part of the power input shaft in a sleeving mode through a third bearing, and the duplicate gear comprises a first external gear and a second external gear; a first inner gear ring is arranged on the portion, corresponding to the first external gear, of the fixed main body, a second inner gear ring is arranged on the portion, corresponding to the second external gear, of the power output shaft, the first external gear and the first inner gear ring are in internal meshed transmission, and the second external gear and the second inner gear ring are in internal meshed transmission. The single-eccentric short transmission chain speed reducer has the advantages of being simple in structure, short in transmission chain, high in transmission efficiency, stable in transmission, large in transmission moment, wide in speed reducing ratio range and the like.
Owner:XUCHANG UNIV

Rigid inside and outside tooth-profile-wrapped tooth reducer

The invention relates to a rigid inside and outside tooth-profile-wrapped tooth reducer which comprises a first level reducing mechanism and a second level reducing mechanism. The first level reducing mechanism comprises an eccentric wheel (101), a first turning arm bearing (5), an outer meshing curve wheel (7) and a gear pin (8), wherein the gear pin (8) is fixed on a first support (9) and is meshed with the outer meshing curve wheel (7) in an external mode. The second level reducing mechanism comprises an eccentric driving wheel (14), a second turning arm bearing (13), an inner meshing curve wheel (11) and an output disc (16), wherein the inner meshing curve wheel (11) is meshed and matched with the gear pin (8) in an internal mode, the output disc (16) is connected with an output shaft (20) of the output disc (16) in a linkage mode, the eccentric driving wheel (14) is connected with the outer meshing curve wheel (7) in a transmission mode through a pin (26), the inner meshing curve wheel (11) is connected with the output disc (16) in a transmission mode through a transmission pin (24), one side of the outer meshing curve wheel (7) is provided with a first reinforcing bracket (6), and one side of the inner meshing curve wheel (11) is further provided with a second reinforcing bracket (23). The rigid inside and outside tooth-profile-wrapped tooth reducer has the advantages of being small in the number of teeth, large in speed ratio, small in size, high in bearing and efficiency, long in service life, high in rigidity, and particularly suitable for a reducer for a heavy-load robot.
Owner:ZHEJIANG HENGFENGTAI REDUCER MFG

Straightness detection device for geological exploration drill rod

The invention discloses a straightness detection device for a geological exploration drill rod, and relates to the technical field of drill rod detection equipment, the straightness detection device comprises a supporting assembly, clamping assemblies, a detection assembly and a drill rod body, the clamping assemblies are arranged at the two ends of the upper surface of the supporting assembly, and the detection assembly is arranged at the top ends of the clamping assemblies; a drill rod body is arranged in the middle of the upper surface of the supporting assembly, the supporting assembly can support the drill rod, the clamping assembly is arranged above the supporting assembly, the clamping assembly can clamp the two ends of the drill rod, the drill rod can be driven to rotate through the clamping assembly, and the drill rod can be clamped through the clamping assembly. The detection assembly is arranged at the top end of the clamping assembly, the detection assembly can detect multiple parts of the outer side of the drill rod, the supporting assembly, the clamping assembly and the detection assembly are matched, multi-directional rapid detection of the drill rod can be achieved, compared with manual detection, the detection efficiency can be effectively improved, and the drill rod detection device is more suitable for rapid detection of multiple drill rods.
Owner:LANZHOU CITY UNIV

Compact hybrid drive wind generating set gearbox transmission structure

The invention discloses a compact hybrid drive wind generating set gearbox transmission structure. The structure comprises a first-stage planetary gear transmission system, a second-stage planetary gear transmission system and a third-stage planetary gear transmission system; the first-stage transmission system adopts fixed shaft internal meshing transmission, and power is input through an inner gear ring of the first-stage transmission system and averagely distributed and output through multiple outer gears of the first-stage transmission system; the second-stage transmission system adopts fixed shaft external meshing transmission, and the power is input through multiple large gears and converged to a central small gear to be output; and the third-stage planetary gear transmission systemis an NGW planetary transmission system, a planet carrier of the third-stage planetary gear transmission system is connected with a central small gear through a spline pair, and a sun gear of the third-stage planetary gear transmission system is connected with a generator. According to the structure, the radial space of original second-stage planetary transmission of a traditional compact hybrid wind generating set gearbox is fully utilized, and the wind power generation power and the gearbox speed ratio can be improved while the space of the gearbox is unchanged, which provides a solution forthe compact hybrid drive wind power generation transmission structure.
Owner:GUANGDONG MINGYANG WIND POWER IND GRP CO LTD

Electric lumbar support driver

The invention discloses an electric lumbar support driver. The electric lumbar support driver comprises a shell and an end cover, wherein the shell and the end cover are combined into a box body, and an outlet line is formed on the box body. The electric lumbar support driver is characterized in that a worm gear, a fixed gear ring, an external gear, a drive disc and an inhaul cable disc are arranged in the box body, the worm gear rotates by virtue of worm drive, a worm is driven by a power source, an eccentric shaft is arranged on the worm gear, the external gear is arranged on the eccentric shaft, a drive pin is arranged on the external gear, the fixed gear ring is fixedly arranged in the box body and is arranged outside the external gear to be eccentrically meshed with the external gear, the drive disc is arranged on the external gear, a first driving groove and a second driving groove are formed in the drive disc, the first driving groove is matched with the drive pin, the inhaul cable disc is rotatably arranged above the drive disc, a driving column is accordingly arranged on the inhaul cable disc, and the driving column is matched with the second driving groove. The electric lumbar support driver disclosed by the invention adopts stacked multi-drive, a large drive ratio is realized, the overall stability is better, and the service life is longer.
Owner:ZHEJIANG YAHU AUTO PARTS
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