CN2623942Y

CN2623942Y - Camshaft bearing connecting and positioning mechanism of annular plate speed reducer

Info

Publication number: CN2623942Y
Application number: CN 03222694
Authority: CN
Inventors: 黄银
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-16
Filing date: 2003-06-16
Publication date: 2004-07-07
Anticipated expiration: 2013-06-16

Abstract

The utility model relates to an camshaft bearing connecting positioning machine of the annular plate , which consist of an input shaft and a key, one end of the inner hole on the inner ring of the camshaft bearing is provided with a fixing hole with a partial center and another end is provided with a positioning hole, the fixing hole and the positioning hole is concentric and communicated with each other, the positioning hole is provided with positioning key groove, and the positioning hole is clearance fitted with the journal of input shaft; the n groups of camshaft bearings are positioned on the journal of input shaft by the key according to phase difference of 360 degrees in n; the inner wall of the fixing hole in the camshaft bearing and the journal of input shaft are provided with expanded connection sleeve. The utility model has advantages of easy mounting, convenient maintaining and which solves the technical problem of jiggle wearing of the camshaft bearing in traditional structure, cancels the camshaft sleeve, as a result the extensional organization is more compact.

Description

The capacity eccentric bearing of annular plate speed reducer connects positioning means

Technical field:

The utility model relates to a kind of annular plate speed reducer, and especially a kind of capacity eccentric bearing of annular plate speed reducer connects positioning means.

Background technique:

The annular plate speed reducer is a kind of novel parallel-axis type small teeth number difference planet gear transmission device, has to overcome the dead point, and is easy to process, simple in structure, velocity ratio is big, the multiterminal input, and bearing capacity is big, overload capacity is strong, the characteristics that assembling form is many, extensive use in some main equipments.Especially three-ring gear reducer, former Ministry of Metallurgical Industry has also formulated product standard " three-ring gear reducer " (YB/T079-1995) specially for it.But structurally the eccentric bushing of this type of speed reducer can only with the axle journal interference fit of input shaft, key between eccentric bushing and the axle journal plays transmitting torque and positioning action, in actual use, this type of speed reducer dismounting is difficult in maintenance, fretting wear on eccentric sleeve is serious, thereby limits and directly have influence on the development from now on of annular plate speed reducer.

The Cui Jiankun of Huadong Polytechnical Univ. and the Zhang Guanghui of University Of Chongqing unite August 24 nineteen ninety-five and have write " three-ring speed reducer analysis of fretting wear on eccentric sleeve ", and be published in " Machine Design " 1996 NO 12 (P31～32, P39) on, they think: from the angle analysis of assembling, eccentric bushing can not coaxially itself be integral, adopt other connecting mode to be not easy to guarantee the calibration degree of accuracy again, unique feasible way is to increase the matching allowance of eccentric bushing with axle journal, but adopt this mode, can the difficulty of eccentric bushing dismounting will be increased greatly again, and in the relevant design criterion of the influence prompting that this article brings at this fretting wear at last, reflected, to cause designer's attention.

The name of Wang another name for Sichuan Province application on June 23rd, 1 of Chongqing Iron ﹠ Steel (Group) Co., Ltd. is called the utility model patent of " specific bearing dicyclo retarder ", the patent No. is ZL98229001.2, publication number is CN2340980Y, to the public a kind of employing capacity eccentric bearing has been proposed, the scheme of cancellation eccentric bushing, but because bearing inner race and input shaft axle journal have still kept the Installation Modes of interference fit, adopt key transmitting torque and location, can't avoid capacity eccentric bearing fretting wear and dismounting drawback difficult in maintenance equally.

Summary of the invention:

The purpose of this utility model is: connect the problem that positioning means exists at the eccentric bushing of present annular plate speed reducer, provide a kind of capacity eccentric bearing of new annular plate speed reducer to connect positioning means.

The purpose of this utility model is achieved in that a kind of capacity eccentric bearing of annular plate speed reducer connects positioning means, comprise input shaft, bearing and key, it is characterized in that: bearing is a capacity eccentric bearing, endoporus one end of capacity eccentric bearing inner ring is an eccentric fixed hole that is provided with, the other end of endoporus is provided with a positioning hole, described fixed hole is concentric and perforation mutually with positioning hole, and positioning hole is provided with positioning spline, the axle journal Spielpassung of positioning hole and input shaft; By key n being organized capacity eccentric bearing is positioned at respectively on the axle journal on the input shaft by 360 °/n phase difference; Be provided with expansion coupling sleeve between the fixed hole inwall in the capacity eccentric bearing and the axle journal of input shaft.

Advantage of the present utility model is: changed flat key transmitting torque and location between the eccentric bushing and input shaft axle journal in traditional annular plate speed reducer, the installation traditional mode of eccentric bushing and axle journal interference fit; Adopted capacity eccentric bearing and axle journal Spielpassung, the expansion coupling sleeve transmitting torque, the synchronization motion of assurance input shaft and capacity eccentric bearing, and by the mutual phase relationship between each capacity eccentric bearing of the key control on the input shaft.This mode is under the prerequisite that guarantees the calibration degree of accuracy, and easy accessibility is convenient to safeguard, has solved the technical barrier of the fretting wear on eccentric sleeve in the conventional construction preferably, and has cancelled eccentric bushing, makes overall structure more compact.

Description of drawings:

Fig. 1 is the structural representation of the capacity eccentric bearing that relates to of the utility model;

Fig. 2 is the schematic representation that the axle journal of capacity eccentric bearing and input shaft is installed;

Fig. 3 is the application schematic representation of the utility model in three-ring gear reducer.

Among the figure: 1, input shaft, 2, expansion coupling sleeve, 3, capacity eccentric bearing, 4, teething-ring plate, 5, key, 6, output gear, 7, output shaft, 8, casing, 9, fixed hole, 10, positioning hole, 11, keyway.

Embodiment:

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

As seen from Figure 1, capacity eccentric bearing 3 one end off-centre are provided with a fixed hole 9, and the other end is provided with a positioning hole 10, and fixed hole 9 and positioning hole 10 are provided with one heart, and connect mutually, are provided with keyway 11 in the positioning hole.

As seen from Figure 2, capacity eccentric bearing 3 is set on the axle journal of input shaft 1, the axle journal Spielpassung of positioning hole 10 and input shaft 1, and by key 5 definite phase places, be provided with expansion coupling sleeve 2 between fixed hole 9 inwalls in the capacity eccentric bearing 3 and the axle journal of input shaft 1, described expansion coupling sleeve 2 meets the JB/T7934-95 standard.

As seen from Figure 3, three-ring gear reducer has three groups of teething-ring plates 4, key 5 is positioned at three groups of capacity eccentric bearings 3 respectively on the axle journal on the input shaft 1 by 120 phase differences, be provided with expansion coupling sleeve 2 between fixed hole 9 inwalls in the capacity eccentric bearing 3 and the axle journal of input shaft 1, capacity eccentric bearing 3 drives teething-ring plate 4, be contained in the internal tooth engagement of output gear 6 and teething-ring plate 4 on the output shaft 7, form few tooth difference inner tooth planet gear driving mechanism, above-mentioned each parts all place among the casing 8.

During enforcement, the utility model is if be used for Double-ring Gear Reducer, and then key 5 should be positioned at two groups of capacity eccentric bearings 3 respectively on the axle journal on the input shaft 1 by 180 phase differences; The utility model is if be used for the Fourth Ring speed reducer, and then key 5 should be positioned at four groups of capacity eccentric bearings 3 respectively on the axle journal on the input shaft 1 by 90 phase differences.

Claims

1, a kind of capacity eccentric bearing of annular plate speed reducer connects positioning means, comprises input shaft, bearing and key, it is characterized in that:

A) bearing is a capacity eccentric bearing, the endoporus of capacity eccentric bearing inner ring is an eccentric fixed hole that is provided with, and the other end of endoporus is provided with a positioning hole, and described fixed hole is concentric and perforation mutually with positioning hole, positioning hole is provided with positioning spline, the axle journal Spielpassung of positioning hole and input shaft;

B) by key n being organized capacity eccentric bearing is positioned at respectively on the axle journal on the input shaft by the 360/n phase difference;

C) be provided with expansion coupling sleeve between the axle journal of fixed hole inwall in the capacity eccentric bearing and input shaft.

2, the capacity eccentric bearing of annular plate speed reducer according to claim 1 connects positioning means, it is characterized in that: it is three groups of capacity eccentric bearings that described n group eccentric shaft is promised, or two groups of capacity eccentric bearings, or four groups of capacity eccentric bearings.