CN2198140Y

CN2198140Y - Planet driving device

Info

Publication number: CN2198140Y
Application number: CN 93216332
Authority: CN
Inventors: 张跃进; 刘志红; 廖重虹
Original assignee: JINGZHOU SPEED REDUCER FACTORY HUBEI
Current assignee: JINGZHOU SPEED REDUCER FACTORY HUBEI
Priority date: 1993-06-17
Filing date: 1993-06-17
Publication date: 1995-05-24
Anticipated expiration: 2003-06-17

Abstract

The utility model relates to a planet driving device, particularly a planet speed reducer used for track-type devices such as excavating machines, track-type tractors, etc. The utility model comprises an annular gear, a central wheel, a planet wheel positioned between and engaged with the annular gear and the central wheel and the input shaft and the output members of a transmitting torque. The utility model has the principal point that shims and seprum are used between the central wheel and/or a planet rotating wheel arm and adjacent members. The utility model has the advantages of simple structure, small size, etc.

Description

Planet driving device

The utility model relates to a kind of planetary driving device, in particular for the planetary reduction gear in the caterpillar drive of excavating machine, track type tractor.

Several planetary transmission structures shown in 32 piece of the 6th chapter of " mechanical engineering manual " the 6th volume, the 4 joint planetary transmission structure designs that mechanical engineering press publishes September nineteen eighty-two comprise inner gear, center gear and between the two and the satellite gear that is meshed with it, relevant rule by machine design, when two members that kinematic velocity is different, as center gear, satellite gear pivoted arm etc., in the time of need limiting the axial location of another member with one of them member, generally all to the two be separated with bearing, prevent wearing and tearing that velocity contrast produced and noise by the two, owing to structurally need reserve the bearing position, so that strengthened the axle of whole transmission device, radial dimension, particularly as the retarder in the caterpillar drive, owing to be subjected to the restriction of complete engine set installation position, and must make compact conformation as far as possible, keep smaller volume.

For this reason, the purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art, and a kind of improved driving device is provided, and it can keep smaller volume satisfying between each member in the positioning requirements on the structure design.

Realize that the purpose of this utility model technical scheme is: a kind of planetary driving device, comprise inner gear, center gear and between the two and the satellite gear that is meshed with it, and the input shaft of transmitting torque and output link, its special character is: separate with pad between center gear and/or satellite gear pivoted arm and the adjacent members.

And the roughness of the pad that center gear and/or satellite gear pivoted arm and adjacent members are separated need reach Ra1.6 or Ra3.2.

And the rolling body of the bearing of supporting satellite gear directly contacts with the satellite gear hole wall.

Because center gear and/or satellite gear pivoted arm and adjacent and exist between the member of relative motion and separate with pad.So avoided strengthening the size of complete machine, made structure more compact because of the bearing position is set.Again because there are not the radial constraint (radially by the inner gear location) of bearing in center gear and satellite gear pivoted arm, but also constitute radial floating between large internal gear and the satellite gear and between satellite gear and the center gear, promptly when above-mentioned member stress is unbalanced, the leeway that utilizes gear back lash to float diametrically in addition, thus play the equally loaded effect.In fact, under the little situation of axial force, directly separate the member of two relative motions, premature wear or noise that people worry can't occur with pad.

Below with reference to accompanying drawing the utility model is illustrated in greater detail.

Fig. 1 is the integrally-built cut-away view of signal the utility model.

Fig. 2 is the left view of Fig. 1.

By Fig. 1, Fig. 2 as can be known, this planetary driving device is provided with third-level planetary train 17 altogether, 24,7 every grade five satellite gears (deciding on design parameters) are arranged respectively, the inner gear 14 of planet circular systems at different levels, 23, but 5 can directly also be embedded on the casing 28 after the machine-shaping in processing on casing 28 walls, with bolted connection, input shaft 3 directly drives the center gear 20 of first order planet circular system 17, drive satellite gear axle 12 and pivoted arm 5 rotations by satellite gear 16 then, axle 12 is connected by screw 13 with pivoted arm 15, to guarantee its reliability, second, third-level planetary train 24,7 center gear 11,8 are placed on the input shaft 3, respectively by the satellite gear pivoted arm 15 of previous stage, 9 drive, center gear 11,8 and/or satellite gear pivoted arm 5,26,9 and adjacent members between with pad 18,10,25 locations spaced, pad and institute thereof need reach Ra1.6 or Ra3.2 every the component ends roughness, " adjacent members " specifically is meant the end cap 19 adjacent with first order satellite gear pivoted arm 15, and second, third-level planetary train 24,7 center gear 11,8 and/or satellite gear pivoted arm 9,26 adjacent members each other, support each satellite gear 16,22,6 bearing 27,21,4 rolling body directly contacts with corresponding line star-wheel hole wall, this mainly is that it can strengthen the radial dimension of each axle under the situation that does not increase machine volume from the intensity consideration.

The pivoted arm 26 of third stage planet circular system 7 passes motion to output link 1 by hub splines 2, hub splines 2 is bell, the end is radial optical axis, can output mechanism 1 circumferentially be located by radial optical axis like this, thereby reduce the working accuracy of 2 of hub spliness, radial runout, make its easy processing, reduce cost.

Output link 1 is bearing on the casing 28 by pair of bearings 29, also is provided with seal ring 30 between output link 1 and casing 28, and cushion rubber 31 and seal ring 32 play a part to prevent dust and prevent leakage of oil.

Claims

1, a kind of planetary driving device, in particular for the planetary reduction gear in the caterpillar drive of excavating machine, track type tractor etc., comprise inner gear [14,23,5], center gear [20,11,8] and between the two and the satellite gear that is meshed with it [16,22,6], and input shaft of transmitting torque [3] and output link [1], it is characterized in that: separate with pad [18,10,25] between center gear [11,8] and/or satellite gear pivoted arm [15,26,9] and the adjacent members.

2, planetary driving device according to claim 1 is characterized in that: center gear ［ 11,8 ］ and/or satellite gear pivoted arm ［ 15,26,9 ］ need be reached Ra1.6 or Ra3.2 with pad ［ 18,10, the 25 ］ roughness that adjacent members separates.

3, planetary driving device according to claim 1 and 2 is characterized in that: the rolling body of the bearing ［ 27,21,4 ］ of supporting satellite gear ［ 16,22,6 ］ directly contacts with corresponding line star-wheel ［ 16,22,6 ］ hole wall.

4, planetary driving device according to claim 3 is characterized in that: the hub splines ［ 2 ］ that is connected with output link ［ 1 ］ is bell, and the end is radial optical axis.

5, planetary driving device according to claim 4 is characterized in that: satellite gear axle ［ 12 ］ is connected by screw ［ 13 ］ with pivoted arm ［ 15 ］.