CN2527786Y

CN2527786Y - Combined gear

Info

Publication number: CN2527786Y
Application number: CN 02200881
Authority: CN
Inventors: 廖谊淙
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-18
Filing date: 2002-01-18
Publication date: 2002-12-25
Anticipated expiration: 2012-01-18

Abstract

Disclosed is a combined gear which is composed of an internal disc and an external disc; wherein an axle hole provided with a key slot is arranged at the center of the internal disc; a convex cone edge is extended in projection from the circumference of the axle hole; a plurality of locking screw holes are arranged on the internal disc; a positioning structure is arranged between the internal disc and the external disc; an internal cone hole corresponding to the convex cone edge is arranged at the center of the external disc with the outside edge provided with a series of saw-teeth, and the lower edge of the internal cone hole is provided with a stepped ring groove which can cover the internal disc; a series of counter bores corresponding to the locking screw holes of the internal disc are arranged on the external disc; through the locking of locking bolts, the internal disc and the external disc are easily assembled into a combined gear with great co-centric precision, simple structure, easy assembly, improved co-centric precision of the gear and a shaft lever, reduced vibration and damage, prolonged service life and ideal effect.

Description

Built up gear

One, technical field:

The utility model relates to the mechanical engineering parts, relates in particular to a kind of built up gear.

Two, background technique:

Gear is the splendid transmitting assemblies of a kind of transmission efficiency, and can be by the cooperation of the number of teeth, reach the purpose of conversion rate or indexing, therefore be widely used on the drive mechanism of various different facility, as shown in Figure 1, it is a kind of drive mechanism that is used on the toolroom machine, its side at engine housing 10 is pivoted with the running shaft 20 that connects driving element, running shaft 20 can drive conversion wheels 22 that are set on the wheel bar 21, conversion wheels 22 have coaxial size axle, engine housing 10 sides in addition is provided with one and wears axis hole 15 for what axostylus axostyle 25 was pivoted, and axostylus axostyle 25 is pivoted with a swivel head 26 wearing axis hole 15 bottoms, utilize key piece 29 to be installed with a canine tooth wheel disc 27 and small gear dish 28 on the axostylus axostyle simultaneously, wherein 27 lockings of canine tooth wheel disc make driving element can pass through running shaft 20 on swivel head 26, conversion wheels 22 and big or small gear disk 27,28 come driven rotary 26 rotation.

The design of said structure; there is no too big problem in the use; its difficult problem that faces is; because existing canine tooth wheel disc 27 is the integral type design; and cooperate the demand of whole speed change conversion and swivel head 26 stability; canine tooth wheel disc 27 external diameters can take place usually greater than the phenomenon of wearing axis hole 15; in case this situation occurs; because of 27 meetings of canine tooth wheel disc can't be by wearing axis hole 15; canine tooth wheel disc 27 can't be assembled on the axostylus axostyle 25 in advance at this moment; need axostylus axostyle 25 is penetrated axis hole 15 after half; again canine tooth wheel disc 27 is inserted by engine housing 10 sides; make axostylus axostyle 25 pass canine tooth wheel disc 27 then, at last parts such as small gear dish 28 and limit screw cap 24 are penetrated by axostylus axostyle 25 tops, and carry out the action that key piece 29 is aimed at and locked in engine housing 10 inside.

As shown in the above description; the assembling of size gear disk 27,28 can't be finished in advance; and need operation in narrow and small engine housing 10, and cause the inconvenience of aligning and locking operation, therefore the convenience of assembling is very poor; owing to be difficult for during assembling aiming at; often cause big or small gear disk 27,28 to form concentric problem with axostylus axostyle 25, regular meeting produces the phenomenon that shakes during transmission like this, and then causes the damage of drive mechanism; not only can increase the expense of maintenance, also can shorten the working life of drive mechanism.

Three, summary of the invention:

In view of this, the purpose of this utility model is for overcoming the existing above-mentioned shortcoming of the mechanical transmission component of commonly using, and a kind of built up gear is provided, and can effectively promote the convenience of assembling, improve the concentricity between gear and the axostylus axostyle, the working life of prolonged mechanical instrument.

For solving above-mentioned technical problem, the utility model is taked following technological scheme.

The utility model built up gear, it is made up of an inner tray and an outer disk body, and the inner tray center is provided with an axis hole with keyway, and the axis hole periphery has protruded out the convex cone edge one, inner tray is provided with several locking screws, and is provided with a position structure between inner tray and outer disk body; The outer disk body center that outer rim is provided with serial sawtooth is provided with an internal taper hole corresponding with the convex cone edge, this internal taper hole lower edge is provided with the ladder annular groove that can coat inner tray, outer disk body is provided with and the corresponding serial counterbore of inner tray locking screw, by the sealed of bolt that lock, constitute an assembling and the splendid built up gear of concentricity precision easily.

For solving the problems of the technologies described above, the utility model can also be taked following technical measures.

Aforesaid built up gear, wherein position structure is to be provided with a location screw on the inner tray circumferential surface, this positioning screw hole top is provided with the counterbore of reaming shape, utilize the holding down bolt lock to establish a lining on the positioning screw hole, outer disk body bottom surface is provided with the clamping groove of a corresponding lining, and lining is imbedded in counterbore and the clamping groove.

The utility model is simple in structure, makes up easyly, improves the concentricity between gear and axostylus axostyle, reduces vibrations and damages, and increases the service life, and is satisfactory for result, reaches design purpose.

Four, description of drawings:

Fig. 1 is a plan cross-section schematic representation of commonly using drive mechanism.

Fig. 2 is the utility model stereochemical structure decomposing schematic representation.

Fig. 3 is the utility model composite structure plan cross-section schematic representation.

Five, embodiment:

Consult shown in Figure 2, the utility model built up gear, it is made up of an inner tray 30 and an outer disk body 35, its China and foreign countries' disk body 35 and produces the effect of location rapidly by position structure except locking is on inner tray 30.

Consult Fig. 2, shown in Figure 3, wherein, inner tray 30 centers are provided with an axis hole with keyway, and inner tray 30 has upwards protruded out annular convex cone edge 31 one at the axis hole periphery, inner tray 30 circumferential surfaces are provided with several locking screws 32 (the utility model is that the locking screw 32 with three equidistant angles is embodiment), and 35 of inner tray 30 and outer disk bodies are provided with a position structure, this position structure is provided with a positioning screw hole 33 on inner tray 30 circumferential surfaces, these positioning screw hole 33 tops are provided with the counterbore 34 of reaming shape, wherein, can utilize holding down bolt 391 locks to establish a lining 39 on the positioning screw hole 33 with ladder counterbore 390, the hypomere of lining 39 can be embedded in the counterbore 34, to promote adhesive strength.

Outer disk body 35 outer rims are provided with serial sawtooth 350, and outer disk body 35 centers are provided with an internal taper hole 36, this internal taper hole 36 is corresponding with the convex cone edge 31 of inner tray 30, these internal taper hole 36 lower edges are provided with the ladder annular groove 360 that can coat inner tray 30, outer disk body 35 is provided with the serial counterbore 37 corresponding with inner tray 30 locking screw 32, by locking bolt 370 sealed in,

outer disk body

30,35, position structure is that disk body 35 bottom surfaces are provided with a clamping groove 38 outside, this clamping groove 38 is corresponding with the lining 39 of inner tray 30, lining 39 epimeres are imbedded in the clamping groove 38, constituted an assembling and the splendid built up gear of concentricity precision easily whereby.

Consult shown in Figure 3, when the utility model uses, be assembled in drive mechanism, be that inner tray 30 with built up gear is set in earlier on the axostylus axostyle 25, utilize key piece 29 clip inner tray 30 and small gear dish 28 simultaneously, owing to establish at external lock, so can effectively adjust the concentricity of inner tray 30 and axostylus axostyle 25, and utilize limit screw cap 24 that inner tray 30 and small gear dish 28 is spacing on axostylus axostyle 25, then will have inner tray 30 wears axis hole 15 with the axostylus axostyle 25 of small gear dish 28 by engine housing 10 and penetrates half, after outer disk body 35 being inserted by side, make axostylus axostyle 25 pass engine housing 10 lockings, at this moment, the user only need rotate in the lining 39 that outer disk body 35 to clamping groove 38 is inserted in inner tray 30, then inside and

outside disk body

30,35 locking screw 32 can accurately be located with counterbore 37, then outer disk body 35 according to the taper fit of internal taper hole 36 and convex cone edge 31 fit, make outer disk body 35 obtain concentricity with axostylus axostyle 25 by inner tray 30, utilize locking bolt 370 with inside and outside disk body 30 at last again, 35 lockings are integral, like this, not only can increase substantially the convenience of assembling, simultaneously more can promote its concentricity precision, reduce the vibrations between the structure, avoid reaching the purpose that increases the service life because of vibrations damage.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of built up gear is characterized in that, is made up of an inner tray and an outer disk body, the inner tray center is provided with an axis hole with keyway, the axis hole periphery has protruded out the convex cone edge one, and inner tray is provided with several locking screws, and is provided with a position structure between inner tray and outer disk body; The outer disk body center that outer rim is provided with serial sawtooth is provided with an internal taper hole corresponding with the convex cone edge, this internal taper hole lower edge is provided with the ladder annular groove that can coat inner tray, outer disk body is provided with and the corresponding serial counterbore of inner tray locking screw, by the sealed of bolt that lock, constitutes built up gear.

2, built up gear according to claim 1, it is characterized in that, described position structure is to be provided with a location screw on the inner tray circumferential surface, this positioning screw hole top is provided with the counterbore of reaming shape, utilize the holding down bolt lock to establish a lining on the positioning screw hole, outer disk body bottom surface is provided with the clamping groove of a corresponding lining, and lining is imbedded in counterbore and the clamping groove.