CN2660227Y

CN2660227Y - Fan reduction box

Info

Publication number: CN2660227Y
Application number: CNU2003201193418U
Authority: CN
Inventors: 胡文章
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-18
Filing date: 2003-12-18
Publication date: 2004-12-01
Anticipated expiration: 2013-12-18

Abstract

The utility model relates to a fan reduction gearbox with simple structure, small workload of installation and low cost, including a box, a coverplate, a first cycloid wheel, a first eccentric bushing, a first floating disc, a second cycloid wheel, a second eccentric bushing, a second floating disc and an output shaft. The utility model is characterized in that the internal wall of the cylindrical box is provided with an internal gear matched with the first cycloid wheel and the second cycloid wheel; the root of the internal gear is divided into an internal and an external root in the box, a tooth top of a clapboard in the middle of the box is matched with the external root and the clapboard is positioned in stairs formed by the internal and the external roots; the box is divided into an external cavity and an internal cavity by the clapboard and the coverplate, the first cycloid wheel, the first eccentric bushing and the first floating disc are arranged in the external cavity and the second cycloid wheel, the second eccentric bushing and the second floating disc are arranged in the internal cavity; the center of the clapboard is provided with a through hole matched with the shaft of the first floating disc or the second eccentric bushing.

Description

The fan speed reducer

Technical field

The utility model relates to a kind of fan speed reducer, particularly a kind of fan speed reducer that utilizes the cycloidal-pin wheel planetary gear speed-reduction.

Background technique

2003 at 7 years 30 month days disclosed Chinese patent bulletin: disclose application number among the CN2563358Y and be 02240004 patent application, a kind of " cycloidal planetary gear speed reducer " disclosed in this patent application, be actually a kind of typical cycloidal-pin wheel epicyclic reduction gear unit, comprise pedestal, gear pin, cycloidal gear, input shaft, output shaft, and input end cap, input shaft is equipped with capacity eccentric bearing, input shaft drives cycloidal gear and rotates, support is provided with the gear pin hole of the gear pin of can packing into, gear pin and cycloidal gear cooperatively interact, the bearing fixing of output shaft is provided with the pin that matches with cycloidal gear on output shaft on the support, the input end cap is fixed on the input end of support.

At disclosed Chinese patent bulletin on October 6th, 1999: disclose application number among the CN2342165Y and be 98234473 patent application, a kind of " the miniature deceleration tooth of coaxial-type case " disclosed in this patent application, the tooth chamber interior wall is provided with internal tooth, in the tooth case, be provided with excentric sleeve, planet wheel, floating disc and output shaft, planet wheel and internal tooth engagement, the planet wheel internal diameter matches with the external diameter of excentric sleeve, the floating disc cantilever inserts in the end-face hole of planet wheel accordingly, and output shaft is provided with attachment pegs and is connected with the afterbody floating disc.In fact it is the inner chamber that is provided with two sidewall band internal tooths in the support both sides, in two inner chambers the cycloidal-pin wheel epicyclic reduction gear unit is set respectively, and two groups of cycloidal-pin wheel epicyclic reduction gear units are in series, thereby in order to improve reduction speed ratio.The miniature deceleration tooth of this coaxial-type case, because two inner chambers placing the cycloidal-pin wheel epicyclic reduction gear unit lay respectively at the two ends of support, so must end cap be set respectively two lumen port, its shortcoming is that complex structure, installation workload are big, cost of production is high.

Summary of the invention

The purpose of this utility model is the problem that complex structure, installation workload are big, cost is high that exists in the existing fan speed reducer in order to solve, and a kind of simple in structure, installation workload is little, cost is low fan speed reducer is provided.

Technological scheme:

The purpose of this utility model is achieved in that a kind of fan speed reducer, comprise casing, cover plate, one-level cycloid wheel, one-level excentric sleeve, one-level floating disc, secondary cycloid wheel, secondary excentric sleeve, secondary floating disc and output shaft, it is characterized in that the cabinet wall of tubbiness is provided with the internal tooth that matches with one-level cycloid wheel and secondary cycloid wheel; The tooth root of internal tooth is divided into inside and outside tooth root from the casing middle part, what wherein lean on the casing oral area is outer tooth root, the root diameter of outer tooth root is greater than the root diameter of interior tooth root, and the tooth top that is positioned at the dividing plate at casing middle part matches with outer tooth root, makes dividing plate be positioned in the step place that inside and outside tooth root forms; Described dividing plate and cover plate are divided into exocoel and inner chamber with casing, one-level cycloid wheel, one-level excentric sleeve, one-level floating disc are installed in exocoel, secondary cycloid wheel, secondary excentric sleeve, secondary floating disc are installed in inner chamber, and dividing plate central authorities have and the axle of one-level floating disc or a through hole that matches of secondary excentric sleeve.

Described fan speed reducer is characterized in that box opening is provided with the interior unidirectional button platform of detaining and fastens the cover plate exterior edge face.

Beneficial effect:

Owing to adopted technological scheme described in the utility model, the inner chamber of casing and exocoel all are positioned at a side of casing, only need an end cap is installed, the dividing plate only with hand between inside and outside chamber pushes and gets final product, and the unidirectional button platform of detaining in box opening is provided with, when being installed, cover plate only needs cover plate is pressed into to make to buckle platform and fasten cover plate and get final product, so, to install simply, workload is little, saved cost of production, and simple in structure.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the internal structure schematic representation of fan speed reducer described in the utility model.

Fig. 2 is the enlarged view of A part among Fig. 1.

Among the figure 1, cover plate, 2, casing, 201, the button platform, 203, outer tooth root, 204, interior tooth root, 21, inner chamber, 22, exocoel, 3, the one-level cycloid wheel, 4, the one-level excentric sleeve, 5, one-level floating disc, 6, dividing plate, 7, the secondary excentric sleeve, 8, secondary floating disc, 32, the secondary cycloid wheel, 9, steel ancient unit of weight, equal to 1/24 liang, 10, spring, 11, output shaft.

Embodiment:

Fig. 1 is an embodiment's of a fan speed reducer described in the utility model internal structure schematic representation.As can be seen from Fig. 1, described fan speed reducer, comprise casing 2, cover plate 1, one-level cycloid wheel 3, one-level excentric sleeve 4, one-level floating disc 5, secondary cycloid wheel 32, secondary excentric sleeve 7, secondary floating disc 8 and output shaft 11, the casing of tubbiness is divided into inner chamber 21 and exocoel 22 by dividing plate 6 and cover plate 1, and the inwall of casing 2 is provided with the internal tooth that matches with one-level cycloid wheel and secondary cycloid wheel; The tooth root of internal tooth in casing middle part is divided into tooth root 204 and outside tooth root 203, outer tooth root 203 is under the constant situation of the surface of contact that guarantees internal tooth and one-level cycloid wheel and secondary cycloid wheel, the tooth root of internal tooth is deepened to obtain, do not influence cooperating of internal tooth and I and II cycloidal gear, the dividing plate 6 that is positioned at the casing middle part is provided with the tooth that matches with outer tooth root, and dividing plate 6 is positioned in the step place that inside and outside tooth root forms; Dividing plate 6 is divided into exocoel 22 and inner chamber 21 with cover plate 1 with casing, one-level cycloid wheel 3, one-level excentric sleeve 4, one-level floating disc 5 are installed in the exocoel 22 and constitute one-level cycloidal-pin wheel epicyclic reduction gear unit with internal tooth on exocoel 22 inwalls, secondary cycloid wheel 32, secondary excentric sleeve 7, secondary floating disc 8 are installed in the inner chamber 21 and constitute secondary cycloidal-pin wheel epicyclic reduction gear unit with internal tooth on inner chamber 21 inwalls, the external diameter of the axle of one-level the floating disc 5 and through hole of dividing plate 6 central authorities matches, endoporus and secondary excentric sleeve link; The unidirectional button platform 201 of button fastened cover plate 1 exterior edge face in the opening of casing 2 was provided with.

Claims

1, a kind of fan speed reducer, comprise casing, cover plate, one-level cycloid wheel, one-level excentric sleeve, one-level floating disc, secondary cycloid wheel, secondary excentric sleeve, secondary floating disc and output shaft, it is characterized in that the cabinet wall of tubbiness is provided with the internal tooth that matches with one-level cycloid wheel and secondary cycloid wheel; The tooth root of internal tooth is divided into inside and outside tooth root from the casing middle part, what wherein lean on the casing oral area is outer tooth root, the root diameter of outer tooth root is greater than the root diameter of interior tooth root, and the tooth top that is positioned at the dividing plate at casing middle part matches with outer tooth root, makes dividing plate be positioned in the step place that inside and outside tooth root forms; Described dividing plate and cover plate are divided into exocoel and inner chamber with casing, one-level cycloid wheel, one-level excentric sleeve, one-level floating disc are installed in exocoel, secondary cycloid wheel, secondary excentric sleeve, secondary floating disc are installed in inner chamber, and dividing plate central authorities have and the axle of one-level floating disc or a through hole that matches of secondary excentric sleeve.

2,, it is characterized in that box opening is provided with the interior unidirectional button platform of detaining and fastens the cover plate exterior edge face according to the described fan speed reducer of claim 1.