CN2503265Y - Little wheel gear phase difference ring type speed reducer - Google Patents

Abstract

The utility model relates to a ring reducer with few teeth difference, which relates to a gear transmission device used in mechanical equipment. The device includes a box body and an end cover, and is supported by a bearing on the hole of the box body, and the external gears on two parallel input shafts located in the box body mesh with each other, and the corresponding positions of the two input shafts have two eccentric shafts. The two eccentric journals of the same input shaft are reversed, the eccentric journals at the corresponding positions of the two input shafts are in the same direction, the eccentric journals are equipped with bearings, and the two inner tooth plates are respectively installed on the eccentric journals of the same direction. On the bearing, an external gear is fixed on the output shaft parallel to the crankshaft axis of the input shaft, so that the instantaneous phase difference between the external gear and the two internal gear plates is 180°, and the outer ring of the bearing of the output shaft is equipped with an elastic equalizer. device. In addition to strong bearing capacity and overload capacity, large transmission ratio and high transmission efficiency, the utility model also has the advantages of low temperature rise, low vibration and noise due to simultaneous input of double cranks and overcoming fretting wear, and can be composed by changing the input and output positions. derived series.

Description

Few tooth difference ring formula retarder

Technical field:

The utility model relates to the gear drive of using on a kind of machinery.

Background technique:

Existing monocycle, dicyclo, three ring and Fourth Ring retarders, its patent No. and patent application publication number are respectively: ZL89213292.2, ZL91230087.6, CN85106692.5, ZL93239404.3.By theory analysis and experimental results show that such transmission device exists vibration, noise, temperature rise and bearing early damage etc. in actual use.In continuously running, heavy duty, at a high speed, problem is more outstanding under the big speed ratio operating mode, has influenced its popularization process greatly, becomes the technical problem that needs to be resolved hurrily.The simple processing and the installation precision that improve retarder of relying on can not be dealt with problems.For three ring and Fourth Ring retarders, since three-phase with four mutually the transmission ring plate be mutually 120 ° and 90 ° respectively, machining accuracy is difficult to assurance, and double crank mechanisms are asynchronous side by side mutually with four to cause three-phase, causes occurring interfering and generation vibration, noise and heating mutually in operation process; Simultaneously owing to adopt three-phase and four transmission ring plates mutually, two high speeds are imported eccentric shaft and are had to adopt eccentric bushing, eccentric bushing is connected by key with high speed shaft, in operation process, there is uneven fretting wear, cause that matching gap increases between planet axis heating, burn and eccentric bushing and the axle, and cause asynchronous.For monocycle and dicyclo retarder, in order to overcome its dead point, adopt a pair of carrier gear, because carrier gear adopts empty cover form, caused moving uncertain and generation vibration, noise and heating; This structure also adopts eccentric bushing simultaneously, has fretting wear, and causes vibration, noise and heating.

Summary of the invention:

The purpose of this utility model is to provide a kind of few tooth difference ring formula retarder, this retarder is compact structure, simple not only, velocity ratio is big, carrying and overload capacity are strong, and have and guarantee that synchronous input overcomes the fine motion friction, machining accuracy easily guarantees, low cost of manufacture, can solve, vibration fast and big this problem of noise, such retarder is further promoted at usage range in the heating of operation process.

The utility model comprises casing, be contained in the end cap that case is loaded onto, input shaft and output shaft by the supporting of the bearing on the box body hole, the external gear that is positioned on three input shafts that are parallel to each other of casing is meshing with each other, wherein two input shaft opposite positions respectively have two eccentric journals that are positioned at casing, make two eccentric journals of same input shaft reverse, the eccentric journal of two input shaft corresponding positions in the same way, bearing is housed on the eccentric journal, two corresponding respectively being contained on the bearing of eccentric journal of internal gear, be fixed with external gear on the output shaft parallel with the crankshaft center line of input shaft, make this external gear and two internal gears engagement instantaneous phase differences become 180 °, on the outer ring of the block bearing of output shaft, the elasticity load-balancing device is housed.Motion of the present utility model is achieved in that power imports from input shaft, by the transmission of one-level ordinary gear with on the two crank input shafts of power dividing in few tooth difference transmission, realize the synchronous input of double-crank input shaft, and utilize double input to overcome the dead point of the two-phase double crank mechanism arranged side by side that is constituted by mutual 180 ° crank input shaft and internal gear, two internal gears and the engagement of output external gear, mesh phase is 180 °, realizes the output of power interflow.

The utility model is compact structure, simple not only, and velocity ratio is big, and carrying and overload capacity are strong, and machining accuracy easily guarantees, low cost of manufacture has guaranteed the precision of two eccentric crankshaft offsets.Because of having removed eccentric bushing, overcome fretting wear, temperature rise is low, vibration and noise are little, has guaranteed synchronous input, has realized interflow output.

Description of drawings:

Fig. 1 is a section of structure of the present utility model.

Embodiment:

Casing [11] comprises the case lid that block is fixedlyed connected with block, ball bearing all is housed on the round tube hole of casing, three input shafts that are parallel to each other [2], [3] respectively by corresponding ball bearing supporting, and its input end is stretched out outside the casing [11], two input shafts wherein are the crank input shaft, be distributed in symmetrically on the casing on both sides of input shaft [2], the input end of each input shaft is with the end cap of sealing, and end cap is fixed on the outer side surface of casing, be fixed with gear [1] respectively being positioned on the input shaft of casing [2] and the two crank input shafts [3], [4], in gear [1], [4] with input shaft [2], supporting sleeve is housed respectively on the input shaft between the ball bearing on the input end [3], on the crank of the two crank input shafts [3] in casing ball bearing [6] is housed respectively, two respectively are equipped with a transmission internal gear [5] on the ball bearing of crank in the same way therein, be fixed with supporting sleeve [8] respectively on gear [4] on two crank input shafts and the crank input shaft [3] between the internal gear [5], on the crank input shaft [3] between the ball bearing of the ball bearing [6] of supporting internal gear [5] and the other end that supports crank input shaft [3], supporting sleeve is housed also, the output shaft [8] that coexists on the center line with input shaft [2] is supported by the ball bearing on the casing [10], elasticity load-balancing device [9] is housed on the outer surface of ball bearing [10], is positioned at output external gear [7] is housed on the output shaft [8] of casing.The power source of this retarder is one or more power source.

Claims (2)

1. A small-tooth-difference ring-type reducer, including a box body, an end cover mounted on the box body, an input shaft and an output shaft supported by bearings on the box body hole; it is characterized in three parallel shafts located in the box body The external gears on the input shaft mesh with each other, and the corresponding positions of the two input shafts have two eccentric journals located in the box, so that the two eccentric journals of the same input shaft are reversed, and the eccentricity of the corresponding positions of the two input shafts The journals are in the same direction, bearings are installed on the eccentric journals, and the two inner tooth plates are correspondingly installed on the bearings of the eccentric journals, and an external gear is fixed on the output shaft parallel to the axis of the input crankshaft, so that the external gears and the two internal teeth The phase difference of the plates is 180° at the moment of meshing, and an elastic load equalizing device is installed on the outer ring of the supporting bearing of the output shaft. 2. The less-tooth differential ring reducer according to claim 1, characterized in that three mutually parallel input shafts extend out of the casing, two of which are crank input shafts, and the two crank input shafts are symmetrical Distributed on the box on both sides of the other input shaft, the input shaft between the gear and the ball bearing on the input end of the input shaft is respectively equipped with a support sleeve, and the gear on the two crank input shafts and the inner tooth plate Support sleeves are fixed on the crank input shaft of the crankshaft, and a support sleeve is also installed on the crank input shaft between the ball bearing supporting the inner gear plate and the ball bearing supporting the other end of the crank input shaft. The input shaft and the output shaft are in the same position. a central line.