CN101109427A

CN101109427A - Decelerator

Info

Publication number: CN101109427A
Application number: CNA2007101392166A
Authority: CN
Inventors: 王跃平; 李彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-13
Filing date: 2007-08-13
Publication date: 2008-01-23

Abstract

The invention discloses a reducer, the purpose of which is to provide a reducer with a simple structure, reliable performance, small size and light weight. The reducer comprises a casing and a cover plate. On a hi-speed shaft, a hi-speed gear is fixed; on a low-speed shaft, a low-speed gear is fixed; in the middle of the low-speed shaft, a shaft hole is provided; one end of the hi-speed shaft is located in the shaft hole; another end of the hi-speed shaft matches with a bearing on the cover plate; the low-speed shaft matches with the bearing on the casing; two driven shafts are symmetrically located at the two sides of the hi-speed shaft and the low-speed shaft respectively; the two ends of the driven shaft are square shafts, which are respectively mounted in the square shaft holes of the cover plate and the casing; a first driven gear and a second driven gear are connected, and matches with the driven shaft; the first driven gear is engaged with the high-speed gear, and the second driven gear is engaged with the low-speed gear.

Description

Retarder

Technical field

The present invention relates to a kind of retarder.

Background technique

Retarder all is widely used in every field, at concrete application difference, various different structures occur, and technical characterstic also varies.At present, common reducer structure is complicated, and the bigger than normal and higher problem of weight of ubiquity volume causes the processing cost height, and waste of material is serious, and it is big to take installing space, carrying inconvenience, and cost of transportation is higher.Owing to adopt multistage combination mostly, structure is comparatively complicated, and the axial dimension of axle is generally all longer relatively, under the big situation of load, occurs problems such as the fluctuation of service noise is bigger easily.Therefore, make the retarder miniaturization become a direction of many people's researchs.Disclosing a kind of application number as Chinese patent is 94225623.9 " miniature reducer ", its main structure is the axle journal that two equal throw of eccentric are arranged on 180 ° symmetrical position on the transmission shaft, the gear of a pair of identical modulus and the number of teeth is installed on its axle journal, gear is connected with driving sleeve by little axle, and an internal gear is installed on external form seat and housing.Attempt to alleviate the bigger problem of volume and weight to a certain extent, but effect is also not very good with less gear and compact space.

Summary of the invention

In order to overcome the defective that above-mentioned prior art exists, the invention provides a kind of simple in structure, reliable performance, little, the lightweight retarder of volume.

Technological scheme of the present invention is: comprise housing, cover plate, high speed shaft is provided with high gear, and lower velocity shaft is provided with low speed gear, there is axis hole at the lower velocity shaft center, one end of high speed shaft is arranged in this axis hole, and the other end of high speed shaft cooperates with bearing on the cover plate, and lower velocity shaft cooperates with bearing on the housing; Two symmetrical respectively both sides that are positioned at high speed shaft and lower velocity shaft of driven shaft, the driven shaft two ends are square shaft, this square shaft is contained in respectively in the square opening and prism of cover plate and housing, first driven gear and second driven gear are connected as a single entity, and cooperate with driven shaft rotation, first driven gear and high gear engagement, second driven gear and low speed gear engagement.

Be provided with needle bearing in the axis hole of described lower velocity shaft, high speed shaft cooperates with needle bearing.

Be provided with needle bearing in described first driven gear and second driven gear, driven shaft cooperates with needle bearing.

The present invention mainly adopts minor axis and compact structure design, and the complete machine axial distance is shortened, because the shortening of axle, bending resistance and bearing capacity are significantly improved; One end of high speed shaft directly is inserted in the axis hole of lower velocity shaft, further saves the space, and the stability of operation is improved; The driven shaft two ends are square shaft, directly are contained in the square opening and prism of cover plate and housing, and structure is simpler, and have reduced bearing, have saved space and cost, install also easier; The present invention adopts symplex structure, makes high speed tooth and low speed tooth stressed evenly, moves more steadily, has reduced noise; The present invention mainly adopts the mode of embedded needle bearing, further saved the space, and performance is improved significantly.The present invention tests and compares at the Lushui River peace Mining Group Zhang Cun ore deposit and 40 type scraper plate machine speed reduceres, weight of the present invention has only 1/3rd of 40 type scraper plate machine speed reducer weight, all gears are littler more than one times than 40 type scraper plate machine speed reduceres, machine volume has only 1/3rd of 40 type scraper plate machine speed reduceres, and using lubricant oil only is 1/4th of 40 type scraper plate machine speed reduceres.Under the same loading condition, more steady than 40 type scraper plate machine speed reduceres during operation, noise obviously reduces.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present invention.

Embodiment

Shown in Figure 1, the present invention includes housing 8, cover plate 5, high speed shaft 4 is provided with high gear 3, and this gear can be cast as one with high speed shaft 4, and also can process the back separately is one with high speed shaft 4 interference fit.Lower velocity shaft 9 is provided with low speed gear 6, and same, this gear can be cast as one with lower velocity shaft 9, and also can process the back separately is one with lower velocity shaft 9 interference fit.There is axis hole at lower velocity shaft 9 centers, and needle bearing is housed in the axis hole, and an end of high speed shaft 4 is contained in the needle bearing of this axis hole, and the other end of high speed shaft 4 cooperates with bearing on the cover plate 5, and lower velocity shaft 9 cooperates with bearing on the housing 8.Two symmetrical respectively both sides that are positioned at high speed shaft 4 and lower velocity shaft 9 of driven shaft 7, driven shaft 7 two ends are square shaft, this square shaft is respectively charged in the square opening and prism corresponding on cover plate 5 and the housing 8.First driven gear 2 and second driven gear 1 are connected as a single entity in the time of can be by casting processing, also can process the back respectively and be connected as a single entity by interference fit.In the axis hole of first driven gear 2 and second driven gear 1 needle bearing is housed, driven shaft 7 cooperates with this needle bearing.First driven gear 2 and high gear 3 engagements, second driven gear 1 and low speed gear 6 engagements.Working procedure is as follows: high speed shaft 4 rotations, drive 2 rotations of two first driven gears by high gear 3, two first driven gears 2 drive second driven gear, 1 rotation that is connected as a single entity respectively, two second driven gears 1 drive low speed gear 6 rotations simultaneously, at last, low speed gear 6 drives lower velocity shaft 9 rotations that are connected as a single entity with it.

Claims

1. retarder, comprise housing (8), cover plate (5), it is characterized in that: high speed shaft (4) is provided with high gear (3), lower velocity shaft (9) is provided with low speed gear (6), there is axis hole at lower velocity shaft (9) center, one end of high speed shaft (4) is arranged in this axis hole, and the other end of high speed shaft (4) cooperates with bearing on the cover plate (5), and lower velocity shaft (9) cooperates with bearing on the housing (8); Two driven shafts (7) symmetry respectively are positioned at the both sides of high speed shaft (4) and lower velocity shaft (9), driven shaft (7) two ends are square shaft, this square shaft is contained in respectively in the square opening and prism of cover plate (5) and housing (8), first driven gear (2) and second driven gear (1) are connected as a single entity, and cooperate with driven shaft (7) rotation, first driven gear (2) and high gear (3) engagement, second driven gear (1) and low speed gear (6) engagement.

2. retarder according to claim 1 is characterized in that: be provided with needle bearing in the axis hole of described lower velocity shaft (9), high speed shaft (4) cooperates with needle bearing.

3. retarder according to claim 1 is characterized in that: be provided with needle bearing in described first driven gear (2) and second driven gear (1), driven shaft (7) cooperates with needle bearing.