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Round nut tightening device

A round nut and sun gear technology, applied in the field of machinery, can solve the problems of insufficient universality of torque wrenches, lack of tightening devices, etc., and achieve the effect of compact structure, good universality and reduced radial size

Active Publication Date: 2016-09-07
YINCHUAN WEILI REDUCER MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a round nut tightening device, which is especially suitable for the installation and tightening of tapered roller bearings for axially positioning round nuts for open gears of wind power yaw and pitch reducers. It solves the shortcomings of lack of tightening device and insufficient universality of torque wrench in the prior art

Method used

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Embodiment Construction

[0038] The following further describes the present invention with reference to the drawings and specific embodiments to help understand the content of the present invention.

[0039] Such as figure 1 with figure 2 As shown, the present invention provides a round nut tightening device, including an input mechanism and a tightening mechanism; the tightening mechanism includes a second planetary gear, a key chuck 13 and a claw chuck 12; the second planetary gear includes a second The sun gear 5, the inner ring gear 7 and the second planet gear 6; the second sun gear 5 and the inner gear ring 7 mesh with the second planet gear 6; the key chuck 13 and the second planet The axle of the wheel 6 is relatively fixed; the ring gear 7 and the claw chuck 12 are relatively fixed; the output of the input mechanism is drivingly connected to the second sun gear 5; the key chuck 13, the claw The chuck 12 and the second sun gear 5 are both coaxially arranged and can rotate relative to each other...

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Abstract

The invention discloses a round nut tightening device. The round nut tightening device comprises an input mechanism and a tightening mechanism. The tightening mechanism comprises a second planetary gear, a key chuck and a claw chuck; the second planetary gear comprises a second sun wheel, an inner tooth ring and a second planetary gear; the second sun wheel and the inner tooth ring are both engaged with the second planetary gear; the key chuck and a gear shaft of the second planetary gear are fixed relatively; the inner tooth ring and the claw chuck are fixed relatively; the output of the input mechanism is in driving connection with the second sun wheel; the key chuck, the claw chuck and the second sun wheel are all coaxially arranged and can rotate relative to one another. According to the round nut tightening device, the second planetary gear is used for transmission of tightening torque, and the output torque is changed; and smaller torque can be input for obtaining larger output torque, and the effective tightening of a round nut with a large torque requirement on the condition of smaller torque input can be achieved.

Description

Technical field [0001] The invention relates to the field of machinery, in particular to a tightening device for a round nut. Background technique [0002] Yaw and pitch reducers are widely used in the field of wind power due to their excellent structural characteristics. A pair of axially arranged tapered roller bearings are installed in the lower body of the wind power yaw and pitch reducer to support the open gear. This open gear bears alternating loads during actual use, so the tapered roller bearings bear Certain radial load and axial load. A round nut and a stop washer are arranged on the axial end surface of one of the tapered roller bearings, and the round nut is fixed on the open gear shaft through a prescribed torque to realize the axial positioning of the tapered roller bearing. Under normal circumstances, the tightening torque of this round nut is 4000Nm. In order to ensure reliable installation, a professional torque wrench is used for tightening, but this type of ...

Claims

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Application Information

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IPC IPC(8): B25B17/02
CPCB25B17/02
Inventor 金伟马海波马玺刘喜龙马文广
Owner YINCHUAN WEILI REDUCER MACHINERY
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