CN204041877U - Live and turn the lossless worm reduction gear of teeth - Google Patents

Abstract

A kind of periphery turns the lossless worm reduction gear of teeth with the dozens of work turning teeth and needle bearing alive, match with original worm screw, the current working forms directly being driven worm gear wheel by worm screw, change into when worm screw is rotated, first drive the work on worm gear in needle bearing to turn teeth to rotate, on worm screw, the spiralling flank of tooth makes again turning gear on worm gear under the form of rolling simultaneously immediately, drive worm gear wheel, output torque, revolutionize and directly use sliding friction by worm screw, extruding is forced to drive the working forms of the highly energy-consuming of worm gear wheel, the friction and wear of self can be dropped to minimum level, the energy of about 40% can be saved, remain again original reduction speed ratio and self-locking performance simultaneously.

Description

Live and turn the lossless worm reduction gear of teeth

1. technical field the invention belongs between prime mover and working machine, is used for changing rotating speed, increases the technical field of the Worm-gear type speed reducer of moment of torsion output.

2. the Worm-gear type speed reducer that uses at present of background technique, in multiple speed reducer, because can reach maximum reduction speed ratio with the simplest structure, turn increase moment, and, again because of the transmission being Continuous Contact, so sound is smaller, obtains and apply the most widely.But, this structure, the most obvious defect is, worm and worm wheel are because be slip transmission, wearing and tearing between teeth are more serious, while creating heat, the casing of speed reducer is caused again to occur generating heat fast, leakage of oil etc., and topmost defect is, relative sliding velocity is higher, after adding load, even if use the worm gear that the good non-ferrous metal of wear resistance is made, its transmission efficiency also only has 60%--70%, all lower than the efficiency of other forms of speed reducer, equal there is the energy of about 40% by the defect of this structure self, slattern in the friction and abrasion of relative sliding, but, because this speed reducer has the plurality of advantages that other multiple speed reducers can not be compared, so be all use this Worm-gear type speed reducer in a variety of machinery, as deceleration and the transmission device increasing moment of torsion.

3. summary of the invention object of the present invention, design and produce a kind of periphery the special worm gear of Novel speed reducer that the rotary work of dozens of turns teeth bearing pack is installed, match with original worm screw, the current method of forcing extruding with worm screw with sliding friction, the working forms that direct drive worm gear wheel runs, change into when worm screw is rotated, first be driven to turn teeth with the work on the worm gear of its close contact and rotate, and the spiralling flank of tooth makes the work on worm gear turn teeth under the form of rotating on worm screw simultaneously, worm gear has been driven to carry out axial-rotation, thus drive the Work machine of back to rotate, relative sliding velocity is reduced to zero, thus make self wearing and tearing of transmission and power loss drop to minimum, save the energy, and extend the life-span of speed reducer.

4. accompanying drawing illustrates that the present invention realizes like this, in Fig. 1, top 1, 2, 3, 4, 5, 6 are integrated the outward appearance that the work manufactured turns teeth, the size on its top 1 is close with the thickness of the fixed teeth on original worm gear, but can after axis in bottom puts into needle bearing 7, rotary taper shape is lived and is turned teeth, 2 is that the rolling bearing protection that the external diameter of external diameter and needle bearing 7 is close is preced with, 3 is that the work just matched with the internal diameter of needle bearing 7 and length turns teeth axis, 4 is the lower shafts matched with the bottom circular hole of the stepped shaft circular hole 9 on worm gear matrix, 5 is the circular grooves installing back-up ring, 6 is live in turning the afterbody of teeth, in Fig. 2, 8 is outer rings of new type worm wheel matrix, its manufacture method is, the first step, be made into outer edge surface concordant, but there is no the worm gear matrix 11 of original machine-made external tooth, second step, process the mounting groove 10 of ring, 3rd step, on the periphery disc of matrix outer ring 8, process identical with the fixed teeth quantity on original worm gear one to enclose or two circles, can put into lives turns the stepped shaft circular hole 9 of teeth rolling bearing group 12, 4th step, be installed into dozens of work and turn teeth bearing pack 12, after living and turning mounting groove that teeth afterbody 6 reaches in the middle part of worm gear matrix, namely packing ring is loaded onto and shaft block ring 13 is fixed, after whole installation, the position new worm gear being installed to original worm gear is fixed, namely turning gear on worm gear replaces current fixing tooth to contact with worm screw coordinating, driven by worm screw and rotate.

In accompanying drawing 1, what draw is that the work can rotated in needle bearing turns teeth, for replacing the fixed teeth on traditional speed reducer worm gear, Fig. 2 is the wheel base section of new type worm wheel and is installed into needle bearing and the schematic diagram (because the casing of speed reducer and worm screw are all retained in original position, therefore omitting) turning teeth of living.

5. mode of execution the present invention is the fixed teeth on the worm gear of current Worm-gear type speed reducer, change on the periphery disc of new type worm wheel matrix outer ring, process identical with the fixed teeth quantity on original worm gear, can put into lives turns the stepped shaft circular hole of teeth rolling bearing group, be installed into needle bearing and live and turn teeth, make to live and turn teeth when worm screw is rotated, just in time be driven rotation, and spiralling external tooth on worm screw, make again to live and turn teeth when rolling, drive worm gear wheel, the power between transmission is made to refuse to transmit by relative sliding transmission, change over completely and under the form of rolling, moment is transmitted mutually by the teeth that turn alive, revolutionize the method for directly being forced extruding by worm screw with sliding friction, the working forms of the highly energy-consuming driving worm gear wheel to run, both the wearing and tearing of self can be dropped to minimum level, turn eliminate power loss simultaneously, the energy of about 30% can be saved, remain again original reduction speed ratio and self-locking performance, also noise can be made less, all component all can use common steel manufacture, also can save a large amount of non-ferrous metals.

Claims (3)

1. a work turns the lossless worm reduction gear of teeth, comprise worm and worm wheel, it is characterized in that: described work turns that teeth comprise oscillating tooth top (1), rolling bearing protection hat (2) successively, living turns teeth axis (3), lower shaft (4), installs the circular groove (5) of back-up ring and afterbody (6); Described work turns teeth and rolling bearing and jointly forms to live and turn teeth bearing pack, on described worm gear periphery, the rotary work of dozens of is installed and turns teeth bearing pack, when worm screw is rotated, live and turn the flank of tooth that teeth and worm spiral rise and rotate with the form of rolling transmission and run, without relative sliding velocity, then turn teeth rotation by work, drive worm gear to carry out axial-rotation, drive the machine operation of back.

2. work according to claim 1 turns the lossless worm reduction gear of teeth, it is characterized in that: worm gear periphery is provided with the ladder-type circular hole identical with teeth quantity, be provided with dozens of in it to turn the work that teeth and rolling bearing form jointly by living and turn teeth bearing pack, drive when rolling friction with worm screw and run.

3. work according to claim 1 turns the lossless worm reduction gear of teeth, it is characterized in that: in the outer teeth of the spirality on worm screw, be provided with longitudinal straight-tooth, be provided with the umbrella shape straight-tooth of identical modulus in the upper end of turning gear, it is meshed with the straight-tooth on worm screw, is driven rotate by worm screw.