CN201672011U

CN201672011U - Procession speed reducer

Info

Publication number: CN201672011U
Application number: CN2010201178583U
Authority: CN
Inventors: 姬忠杰; 杨树人
Original assignee: BRAKE DRIVING EQUIPMENT (JIAOZUO) Co Ltd
Current assignee: Jiaozuo Rethel Disc Brakes Co., Ltd.
Priority date: 2010-02-24
Filing date: 2010-02-24
Publication date: 2010-12-15
Anticipated expiration: 2020-02-24

Abstract

The utility model discloses a procession speed reducer, which comprises a case, an input shaft and an output shaft, wherein the input shaft is formed into a whole by two support shaft sections which are arranged on the head and tail ends of the input shaft and an inclined shaft section between the two support shaft sections; the support shaft section on the head end is rotatably assembled on the head end of the output shaft, and the inclined shaft section is rotatably provided with a planet gear body; the case is provided with a fixed bevel gear which is meshed with a first roller bevel gear on one side of the planet gear body, the head end of the output shaft is provided with a movable bevel gear which is meshed with a second roller bevel gear on the other side of the planet gear body; and the axes of the two support shaft sections are coaxially arranged, and the two support shaft sections are rotatably assembled with the corresponding case and the output shaft through a self-aligning roller bearing. The utility model adopts the self-aligning roller bearing to assemble the input shaft, can appropriately compensate the error caused by the processing and assembling and the operation process, simultaneously reduces the coaxial processing and assembling difficulty and production cost, and is applicable to the wind power mechanical drive device.

Description

The precession retarder

Technical field

The utility model relates to a kind of precession retarder, belongs to the machinery that slows down.

Background technique

The main developing direction of machinery of slowing down at present is big speed ratio, big bearing capacity, small volume, because that the gear of traditional multistage involute gear speed reducer participates in the number of teeth that meshes simultaneously is few, causes that its volume is big, bearing capacity is lower; So the more cycloidal gear engagement driving technology of total number of teeth in engagement applies to the mechanical field that slows down gradually simultaneously, for example commercially available cycloidal planetary gear speed reducer, it is stressed very big that but cycloidal planetary gear speed reducer has a rotary arm bearing, and the output pin axis mechanism is easy to wear, the shortcoming that working life is relatively low.China Patent No.: ZL982379749 and for example, title: disclosed a kind of gyro-precession type speed reducer in the model utility specification of gyro-precession type speed reducer, this this patent documentation has proposed the design concept that rolling friction between the bevel gear of tapered roller gear on a kind of planetary pinion and two ends correspondence meshes transferring power, but do not constitute the complete skill scheme that in industry, to make as yet, therefore be necessary to propose a kind of precession retarder that meets the industrialization demand, has the market competitiveness.

Summary of the invention

The purpose of this utility model be to provide a kind of rationally distributed, make things convenient for processing and assembling, can realize the precession retarder of high loading big speed ratio.

The technical solution of the utility model is: a kind of precession retarder, comprise casing, input shaft, output shaft, input shaft is to support shaft parts and inclination shaft part one between the two constitutes by two of head and the tail two ends, the support shaft part of head end rotates and is assemblied on the casing, the support shaft part of tail end rotates the head end that is assemblied in output shaft, is rotatably equipped with the planet wheel body on the described inclination shaft part; Casing is provided with the first roller bevel gear engagement of fixed cone gear and planet wheel body one side, but the head end of output shaft is provided with the second roller bevel gear engagement of dynamic bevel gear and planet wheel body opposite side, described two axis that support shaft part are for being coaxially set, and described two support shaft part all rotates assembling by selfaligning roller bearing and corresponding casing, output shaft.

Described each roller bevel gear include the big end that is connected with the planet wheel body outwardly skirt shape awl roller frame and the big end of each skirt shape awl roller frame on rotate the awl roller that the rotation axis of assembling distributes along conical surface, the axis of the awl roller distribution place conical surface of two roller bevel gears all with the dead in line of the inclination shaft part of input shaft; But the profile of tooth of described fixed cone gear and dynamic bevel gear is conical pendulm line profile of tooth and all cooperates with first, second roller bevel gear engagement driving with the cycloidal gear kind of drive.

Described axial direction of respectively boring the small end of roller towards its distribution place conical surface.

The airtight casing that the output shaft housing that described casing is the input shaft end cap that is rotatably assorted by the support shaft part with the input shaft head end, middle part casing, be rotatably assorted with the output shaft middle part, the output shaft housing end plug that is rotatably assorted with the output shaft tail end join end to end successively and form.

Described sealed enclosure is provided with lubricating cup, breather plug, oil drain plug.

Input shaft of the present utility model is special-shaped shaft part, too high machining accuracy certainly will improve its cost, the variable characteristic of wheel axis reduces the desired processing of input shaft two end supports shaft part, assembly precision in the selfaligning bearing and utilize, even the coaxality of the support shaft part of input shaft have slightly error also can the self-regulating axis to satisfy the transmission requirement, thereby reduce the difficulty of coaxial processing, assembling, reduce and make cost of production; And adopt selfaligning bearing bear the inclination shaft part when rotated radial load and improve working life, thereby be applicable to the wind-powered electricity generation mechanical transmission.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

As shown in Figure 1, a kind of specific embodiment of precession retarder of the present utility model comprises the airtight casing that is interconnected to form by input shaft end cap 1, middle part casing 2, output shaft housing 15, output shaft housing end plug 12.Can be full of lubricant oil in the airtight casing part that is installed in the housing is lubricated, seal casinghousing is provided with the part of control lubricant oil oil masses such as lubricating cup 9, breather plug 22, oil drain plug 17.

Output shaft 7 middle parts are rotated by a pair of tapered roller bearing of arranging vertically 8,11 and are assemblied in the output shaft housing 15, be supported with the bearing spacer 10 that is fixedly set on the output shaft 7 between the interior wheel of two

tapered roller bearings

8,11, be equipped with seal ring 16 between the inwall of bearing spacer 10 outer circumferential faces and output shaft housing 15, adopt paired tapered roller bearing 8,11 can bear radial load and two-way thrust load, to improve bearing life.The tail end of output shaft 7 passes output shaft housing end plug 12 and is connected with output gear 14, the corresponding center hole that is fixed with lining and output shaft housing end plug 12 on the output shaft 7 is inserted and is worn cooperation, and is equipped with seal ring 13 between the center bore inner wall of described lining 7 and corresponding output shaft housing end plug 12.

Input shaft 23 is to support the solid shaft that shaft parts 231,233 and inclination shaft part 232 one between the two connect and compose by two of head and the tail two ends, two support shaft parts 231,233 are coaxially set and have the axis a that is coaxially set with output shaft 7, and the axis b of inclination shaft part 232 and axis a intersect in same plane and in the O at input shaft 23 middle parts point, and have angle α.The support shaft part 231 of the head end of input shaft 23 rotates the central position that is assemblied in input shaft end cap 1 by selfaligning roller bearing 21, and the support shaft part 233 of the tail end of input shaft 23 rotates by selfaligning roller bearing 18 and is assemblied in the center mounting hole of offering on output shaft 7 interior edge faces.

Input shaft two supports shaft part and output shaft has common axis, guarantees coaxial input, the output of power, and makes input, output shaft and casing have unified benchmark when making and assemble, thus convenient processing and assembling.In addition because the elongation line of the axis of the support shaft part at the axis of the inclination shaft part of input shaft and two ends is also crossing on same plane, its position of intersecting point should be in the middle part of input shaft, thereby be convenient to when machining, find accurately the formulation of locating basis and operation, enhance productivity and reduce error; And because input shaft is special-shaped shaft part, too high machining accuracy certainly will improve its cost, and utilize the variable characteristic of selfaligning bearing inner ring axis to reduce the desired processing of input shaft two end supports shaft part, assembly precision, even the coaxality of the support shaft part of input shaft have slightly error also can the self-regulating axis to satisfy the transmission requirement, thereby reduce the difficulty of coaxial processing, assembling, reduce and make cost of production; Thereby and adopt selfaligning bearing to bear inclination shaft part radial load when rotated and improve working life.

Be rotatably equipped with planet wheel body 3 by two tapered roller bearings 4 that are provided with relatively at interval on the inclination shaft part 232 of input shaft 23, described planet wheel body 3 inside have the axial center hole of the dead in line of inclination shaft part that cooperate with tapered roller bearing 4 outer rings, axis and input shaft 23, and it is first, second roller

awl gear ring

31,32 of tooth that the both sides relative spacing on planet wheel body 3 outer circumferential faces on axially is provided with the awl roller that rotates.Each roller awl gear ring includes the big end skirt shape awl roller frame 33 outwardly that is wholely set with the planet wheel body, 34, bore roller 5 by being equipped with on the bearing pin 6 that distributes along conical surface on the big end of each skirt shape awl roller frame, each bearing pin 6 and on the axes intersect of awl roller 5 in the vertex of a cone of the conical surface at its distribution place, first, second roller awl gear ring 31, the axis of 32 awl roller 5 place conical surfaces all with the dead in line of the inclination shaft part of input shaft 23, and first, second roller awl gear ring 31, the intersection point O that the vertex of a cone of 32 awl roller 5 place conical surfaces intersects at the support shaft part axis of the axis of inclination shaft part of described input shaft 23 and input shaft 23 respectively bores the axial direction of the small end of roller 5 towards its distribution place conical surface in addition.

First roller awl gear ring 31 cooperates with cycloidal gear kind of drive engagement driving with fixed cone gear ring 20 on being fixedly set in input shaft end cap 1 inwall, and first roller is bored the number of teeth of the awl roller number of gear ring 31 greater than fixed cone gear 20; But the second roller bevel gear 32 cooperates with cycloidal gear kind of drive engagement driving with the dynamic bevel gear 19 that is fixedly set in output shaft 7 head ends, but the awl roller number of the second roller bevel gear 32 is greater than the number of teeth of dynamic bevel gear 19.But the profile of tooth of fixed cone gear 20 and dynamic bevel gear 19 is a conical pendulm line profile of tooth.

The rotation axis of planet wheel body 3 and last two rollers

awl gear ring

31,32 thereof and the dead in line of input shaft 23 inclination shaft parts, the axis that guarantees two

roller bevel gears

31,32 can constantly change with the axis of the inclination shaft part of input shaft 23 and center on the spinning motion that " O " point becomes axis, realizes the gyro-precession type deceleration.And the awl roller place conical surface vertex of a cone of two

roller bevel gears

31,32 intersects at the O point and distributes with this point symmetry, make benchmark and other parts of its processing and assembling unified, convenient processing and assembling, and the thrust load of two roller bevel gears can be cancelled out each other, make the action of circling round of mechanism more steady.

The awl roller place conical surface of two roller bevel gears in the foregoing description is symmetrical arranged with the vertex of a cone that intersects at a point, and the certainly described two conical surfaces setting that also can interlock or be spaced apart makes both have spacing by the vertex of a cone.

Precession retarder of the present utility model is when work, power is by support end 231 inputs of input shaft 23 head ends, make the inclination shaft part 232 of input shaft 23 do the circumnutation that changes around " O " some axis by tapered roller bearing drive planet wheel body 3, planet wheel body 3 one ends with the awl roller of the first roller bevel gear 31 fricton-tightly roll along fixed cone gear 20 flank of tooth, realize first order deceleration with the cycloidal gear kind of drive, but simultaneously the planet wheel body the other end with the awl roller of the second roller bevel gear 32 fricton-tightly roll along the flank of tooth of dynamic bevel gear 19, but do the deceleration circumnutation with cycloidal gear kind of drive drive dynamic bevel gear 19 and output shaft 7, realize second level deceleration.

Claims

1. precession retarder, comprise casing, input shaft, output shaft, input shaft is to support shaft parts and inclination shaft part one between the two constitutes by two of head and the tail two ends, the support shaft part of head end rotates and is assemblied on the casing, the support shaft part of tail end rotates the head end that is assemblied in output shaft, is rotatably equipped with the planet wheel body on the described inclination shaft part; Casing is provided with the first roller bevel gear engagement of fixed cone gear and planet wheel body one side, but the head end of output shaft is provided with the second roller bevel gear engagement of dynamic bevel gear and planet wheel body opposite side, it is characterized in that: described two axis that support shaft part are for being coaxially set, and described two support shaft part all rotates assembling by selfaligning roller bearing and corresponding casing, output shaft.

2. precession retarder according to claim 1, it is characterized in that: described each roller bevel gear include the big end that is connected with the planet wheel body outwardly skirt shape awl roller frame and the big end of each skirt shape awl roller frame on rotate the awl roller that the rotation axis of assembling distributes along conical surface, the axis of the awl roller distribution place conical surface of two roller bevel gears all with the dead in line of the inclination shaft part of input shaft; But the profile of tooth of described fixed cone gear and dynamic bevel gear is conical pendulm line profile of tooth and all cooperates with first, second roller bevel gear engagement driving with the cycloidal gear kind of drive.

3. precession retarder according to claim 1 is characterized in that: described axial direction of respectively boring the small end of roller towards its distribution place conical surface.

4. according to claim 1 or 2 or 3 described precession retarders, it is characterized in that: the airtight casing that the output shaft housing that described casing is the input shaft end cap that is rotatably assorted by the support shaft part with the input shaft head end, middle part casing, be rotatably assorted with the output shaft middle part, the output shaft housing end plug that is rotatably assorted with the output shaft tail end join end to end successively and form.

5. precession retarder according to claim 4 is characterized in that: described sealed enclosure is provided with lubricating cup, breather plug, oil drain plug.