CN206159441U - Reduction gear gear positioner - Google Patents

Abstract

The utility model discloses a reduction gear gear positioner, including the reducer box body and connecting plate, the connecting plate is fixed on the reducer box body, be equipped with intermediate gear and input gear in the reducer box body, the lower extreme of input gear's middle part axle hinges on the lower part lateral wall of the reducer box body through connecting the bearing, the upper end of input gear's middle part axle hinges on the connecting plate and stretches out the connecting plate through connecting the bearing, input gear and intermediate gear mesh mutually, intermediate gear's middle part is fixed with the output shaft, in the downwardly extending's that the output shaft plug bush has on the bottom plate of the reducer box body the input hole, the upper end inside wall in input hole has ring positioning groove. It passes through transition fit through the upper portion with the output shaft and fixes in the hole to this advances line location, and this locate mode makes and has the clearance between intermediate gear and the output shaft hardly, in the expansion sleeve portion that bearing inner race installed at intermediate gear, install on the reducer box body outer lane, has had more the one deck restriction again to intermediate gear.

Description

A kind of reducer gear positioner

Technical field：

The utility model is related to decelerator technical field, more specifically to a kind of reducer gear positioner.

Background technology：

In existing automobile or fork truck, as shown in figure 1,1 is input gear, 2 is idler gear, 3 my conical tooth shafts, and 4 are Stop nut, 5 is taper roll bearing, and 6 is reduction case, and the conical tooth shaft 3 (input shaft) in its reduction case 6 passes through axle Hold and be hinged in reduction case 6, meanwhile, idler gear 2 is positioned by the external splines of conical tooth shaft 3, due to spline fitted Gap is larger, when idler gear 2 is subject to radial direction moment loading, it may appear that skewness, makes input gear 1 and idler gear 2 In improper engagement, cause gear operation noise excessive, affect the once installation qualification rate of product, serious can also shadow Ring the service life of product.

Utility model content：

The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of reducer gear positioner, and it leads to Cross and the top of output shaft be fixed in endoporus by interference fits, positioned with this, this positioning mode make idler gear and Gap is there's almost no between output shaft；On the other hand, bearing inner race is arranged in the extension set portion of idler gear, and outer ring is installed On reduction case, again many to idler gear one layer of restrictions make idler gear when by radial direction moment loading, will not produce Skewness, so as to improve product quality, it is ensured that the once installation qualification rate of product, improves efficiency.

The utility model solves the scheme of the technical problem：

A kind of reducer gear positioner, including reduction case and connecting plate, connecting plate is fixed on reduction case On, idler gear and input gear are provided with the reduction case, the lower end of the middle part axle of input gear is by connecting bearing It is hinged on the lower sides of reduction case, the upper end of the middle part axle of input gear is hinged on connecting plate by connecting bearing And connecting plate is stretched out, input gear is meshed with idler gear, and idler gear is fixedly arranged in the middle of output shaft, and output shaft sleeve exists In the input hole for extending downwardly having on the base plate of reduction case, the upper end madial wall of input hole has circular orientation recessed Groove, the middle part bottom surface of idler gear has the extension set portion for extending downwardly, and extension set portion is in input hole, circular orientation groove In be provided with bearing, on the madial wall of circular orientation groove, the inner ring holding of bearing is fixed for the lateral wall holding of the outer ring of bearing On the lateral wall in extension set portion.

Back-up ring is also inserted with the circular orientation groove, the lateral wall holding of back-up ring is fixed on the interior of circular orientation groove On the wall of side, the lower surface of the outer ring of bearing is pressed against on the upper surface of back-up ring, and the upper surface of the inner ring of bearing is pressed against center tooth On the middle part of the lower surface of wheel.

The bearing is taper roll bearing.

The output shaft is conical tooth shaft, and the middle part top of idler gear has installs groove, installs the bottom surface middle part of groove With middle part connecting hole, the bottom surface middle part of idler gear has endoporus, and the lower end of middle part connecting hole communicates with the upper end of endoporus, interior The diameter with diameter greater than middle part connecting hole in hole.

The top of the output shaft is fixed in endoporus by interference fits, and the conial tooth part that the upper end of output shaft has is with The interior teeth portion having on the madial wall of portion's connecting hole is engaged, and the top surface of the upper end of output shaft has the axle portion that is spirally connected, and be spirally connected axle portion Loosen nut in installing in groove and being bolted with.

Prominent effect of the present utility model is：

Compared with prior art, it is carried out by the way that the top of output shaft is fixed in endoporus by interference fits with this Positioning, this positioning mode makes to there's almost no gap between idler gear and output shaft；On the other hand, during bearing inner race is arranged on Between gear extension set portion on, outer ring is arranged on reduction case, again many to idler gear one layer of restrictions, makes idler gear When by radial direction moment loading, skewness will not be produced, so as to improve product quality, it is ensured that the once installation of product is qualified Rate, improves efficiency.

Description of the drawings：

Fig. 1 is the partial structural diagram of existing apparatus；

Fig. 2 is partial structural diagram of the present utility model.

Specific embodiment：

Embodiment, is shown in as shown in Fig. 2 a kind of reducer gear positioner, including reduction case 10 and connecting plate 20, Connecting plate 20 is fixed on reduction case 10, and idler gear 11 and input gear 12 are provided with the reduction case 10, defeated The lower end for entering the middle part axle of gear 12 is hinged on the lower sides of reduction case 10 by connecting bearing, input gear 12 The upper end of middle part axle is hinged on connecting plate 20 and stretches out connecting plate 20, input gear 12 and idler gear 11 by connecting bearing It is meshed, idler gear 11 is fixedly arranged in the middle of output shaft 13, and the sleeve of output shaft 13 has on the base plate of reduction case 10 The input hole 101 for extending downwardly in, the upper end madial wall of input hole 101 has circular orientation groove 102, idler gear 11 Middle part bottom surface has the extension set portion 111 for extending downwardly, and extension set portion 111 is in input hole 101, circular orientation groove 102 In be provided with bearing 30, the lateral wall holding of the outer ring of bearing 30 on the madial wall of circular orientation groove 102, the inner ring of bearing 30 Holding is fixed on the lateral wall in extension set portion 111.

Further, back-up ring 40 is also inserted with the circular orientation groove 102, the lateral wall holding of back-up ring 40 is fixed On the madial wall of circular orientation groove 102, the lower surface of the outer ring of bearing 30 is pressed against on the upper surface of back-up ring 40, bearing 30 The upper surface of inner ring be pressed against on the middle part of the lower surface of idler gear 11.

Further, the bearing 30 is taper roll bearing.

Further, the output shaft 13 is conical tooth shaft, and the middle part top of idler gear 11 has installs groove 112, The bottom surface middle part that the bottom surface middle part for installing groove 112 has middle part connecting hole 113, idler gear 11 has endoporus 114, and middle part connects The lower end for connecing hole 113 communicates with the upper end of endoporus 114, the diameter with diameter greater than middle part connecting hole 113 of endoporus 114.

Further, the top of the output shaft 13 is fixed in endoporus 114 by interference fits, output shaft 13 it is upper The conial tooth part that end has is engaged with the interior teeth portion having on the madial wall of middle part connecting hole 113, the top of the upper end of output shaft 13 Face has the axle portion 131 that is spirally connected, and the axle portion that is spirally connected 131 is in install in groove 112 and be bolted with loosens nut 50.

It is positioned by the way that the top of output shaft 13 is fixed in endoporus 114 by interference fits with this, this positioning Mode makes to there's almost no gap between idler gear 11 and output shaft 13；On the other hand, the inner ring of bearing 30 is arranged on centre In the extension set portion 111 of gear 11, the outer ring of bearing 30 is arranged on reduction case 10, again many one layer to idler gear 11 Limit, make idler gear 11 when by radial direction moment loading, skewness will not be produced, so as to improve product quality, it is ensured that produce The once installation qualification rate of product, improves efficiency.

Finally, embodiment of above is merely to illustrate the utility model, and is not limitation of the utility model, relevant skill The those of ordinary skill in art field, in the case of without departing from spirit and scope of the present utility model, can also make various changes Change and modification, therefore the technical scheme of all equivalents falls within category of the present utility model, patent protection model of the present utility model Enclosing to be defined by the claims.

Claims (5)

1. a kind of reducer gear positioner, including reduction case (10) and connecting plate (20), connecting plate (20) is fixed on On reduction case (10), it is characterised in that：Idler gear (11) and input gear are provided with the reduction case (10) (12), the lower end of the middle part axle of input gear (12) is hinged on the lower sides of reduction case (10) by connecting bearing, The upper end of the middle part axle of input gear (12) is hinged on connecting plate (20) and stretches out connecting plate (20) by connecting bearing, is input into Gear (12) is meshed with idler gear (11), and idler gear (11) is fixedly arranged in the middle of output shaft (13), and output shaft (13) inserts In being enclosed within the input hole (101) for extending downwardly having on the base plate of reduction case (10), the upper end inner side of input hole (101) Wall has circular orientation groove (102), and the middle part bottom surface of idler gear (11) has the extension set portion (111) for extending downwardly, prolongs Set portion (111) is stretched in input hole (101), bearing (30) is provided with circular orientation groove (102), the outer ring of bearing (30) On the madial wall of circular orientation groove (102), the inner ring holding of bearing (30) is fixed on extension set portion (111) for lateral wall holding Lateral wall on.

2. a kind of reducer gear positioner according to claim 1, it is characterised in that：The circular orientation groove (102) back-up ring (40) is also inserted with, the lateral wall holding of back-up ring (40) is fixed on the madial wall of circular orientation groove (102) On, the lower surface of the outer ring of bearing (30) is pressed against on the upper surface of back-up ring (40), and the upper surface of the inner ring of bearing (30) is pressed against On the middle part of the lower surface of idler gear (11).

3. a kind of reducer gear positioner according to claim 1, it is characterised in that：The bearing (30) is circular cone Roller bearing.

4. a kind of reducer gear positioner according to claim 1, it is characterised in that：The output shaft (13) is cone Tooth axle, the middle part top of idler gear (11) has installs groove (112), and the bottom surface middle part for installing groove (112) has middle part Connecting hole (113), the bottom surface middle part of idler gear (11) has endoporus (114), the lower end of middle part connecting hole (113) and endoporus (114) upper end communicates, the diameter with diameter greater than middle part connecting hole (113) of endoporus (114).

5. a kind of reducer gear positioner according to claim 4, it is characterised in that：The output shaft (13) it is upper Portion is fixed in endoporus (114) by interference fits, the conial tooth part that the upper end of output shaft (13) has and middle part connecting hole (113) Madial wall on the interior teeth portion that has be engaged, the top surface of the upper end of output shaft (13) has the axle portion (131) that is spirally connected, and be spirally connected axle portion (131) nut (50) is loosened in installing in groove (112) and be bolted with.