CN202118192U

CN202118192U - Reducer with small gear difference

Info

Publication number: CN202118192U
Application number: CN2011202249792U
Authority: CN
Inventors: 宿孝廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-29
Filing date: 2011-06-29
Publication date: 2012-01-18
Anticipated expiration: 2021-06-29

Abstract

The utility model relates to a reducer with small gear difference, which comprises a box, an input shaft and an output shaft. A universal coupling is arranged between the input shaft and the output shaft, an eccentric shaft head is arranged at the end of the input shaft, an oscillating bearing is arranged on the eccentric shaft head, a bearing sleeve is arranged on the oscillating bearing, an input end of the universal coupling is fixedly connected with the bearing sleeve and an oscillating bevel gear, a fixed bevel gear used for being meshed with the oscillating bevel gear is fixed on the box, and an output end of the universal coupling is connected with the output shaft. Teeth of the fixed bevel gear are more than those of the oscillating bevel gear, thereby being compact in structure. When the fixed bevel gear and the oscillating bevel gear are meshed, the axial angle ranges from 150 degrees to 178 degrees, the arrangement enables meshed teeth of the fixed bevel gear with the oscillating bevel gear to be more than those of a traditional transmission gear, and the transmission torque is large, thereby being capable of achieving large reduction ratio and heavy-load speed variation. The arrangement of a balance device solves the laterality problem when the oscillating bevel gear rotates, and accordingly the reducer moves more stably with smaller noise.

Description

A kind of little tooth difference speed reducer

Technical field

The utility model relates to a kind of retarder, specifically, relates to a kind of little tooth difference speed reducer, belongs to field of mechanical technique.

Background technique

At present; Bevel gear one differential-gear speed reducer has appearred; Like the patent No. is 022062939, and name is called: bipyramid gear little gear difference speed reducer, the technological scheme of employing are that a pair of number of teeth difference is 1 cone gear engagement; One of them is fixed for plane or bevel gear with 90 (fixed gear plate) and with casing, and another gear (swing fluted disc) is done to roll on fixed gear plate and meshed; Because two tooth number differences are l, the swing fluted disc will oppositely turn over a tooth around self axis after rolling and meshing a week; Another is to the engagement of the identical cone gear of the number of teeth, in the beanstalk one (small tooth plate) with swing that fluted disc is coaxial to be connected, another then is an output shaft; Because two tooth numbers are identical, velocity ratio is l:1 in the engagement process; Therefore, the swing fluted disc will be exported through the engagement of small tooth plate and output shaft around the rotation of self axis; The rolling of swing fluted disc on fixed gear plate then is to drive a drive plate rotation by input shaft, and the item pin on the drive plate forces swing fluted disc movement therewith to realize through thrust-bearing; The vertex of a cone of two pairs of bevel gear engagements is designed to a bit and is made as the centre of sphere of a joint shaft bearing; This joint shaft bearing has been confirmed the position of swing fluted disc and has guaranteed to swing fluted disc from geometrical relationship can realize meshing the relative pure rolling of promptly swinging fluted disc pitch cone and fixed gear plate pitch plane with the rolling of fixed gear plate; Thus, the velocity ratio of input shaft and output shaft should be Z ₂: 1, Z wherein ₂Be the fixed gear plate number of teeth.

The patent No. is 2004200084757, and name is called: bipyramid gear pivoted axle little tooth difference speed reducer, the technological scheme of employing are that a body is arranged; Two ends at body are equipped with input shaft and output shaft respectively, and a fixedly cone gear is housed in body, and a rotating disk is arranged on input shaft; Inclined hole is arranged on the rotating disk, balance staff is housed in the inclined hole, the swing circle bevel gear that is meshed with fixing cone gear is housed on the balance staff; An output bevel gear is arranged on output shaft; The transmission cone gear that is meshed with output bevel gear also is housed on balance staff, and output bevel gear is with fixedly cone gear is coaxial, and the transmission cone gear is coaxial with the swing circle bevel gear; And the vertex of a cone of two pairs of cone gears engagement is for a bit; Between output shaft and balance staff, the vertex of a cone place of two pairs of cone gears engagement is equipped with joint shaft bearing, utilizes the engagement of two pairs of cone gears, realizes few tooth difference reduction of speed transmission.

Above patent realizes speed change with bevel-gear sett respectively, and is to the bevel gear output variable speed, very high to the accuracy of mesh requirement of gear pair with another; The differential gear and the joint shaft bearing centre of sphere have eccentric phenomena when motion, when causing whole system work very big vibration is arranged, and be not steady; Noise is big in the running; Fragile, working life is short, and operational safety is poor.

The model utility content

The utility model technical problem to be solved is to above problem, provide a kind of compact structure, transmitting torque big, can realize the little tooth difference speed reducer of big retarding than, big load speed change.

For achieving the above object, the utility model adopts following technological scheme: a kind of little tooth difference speed reducer, comprise casing, input shaft and output shaft, and it is characterized in that: be provided with Hooks coupling universal coupling between input shaft and the output shaft; The end of input shaft is provided with eccentric spindle nose; Eccentric spindle nose is provided with joint shaft bearing; Joint shaft bearing is provided with bearing housing; The input end of Hooks coupling universal coupling is fixedly connected with bearing housing; The input end of Hooks coupling universal coupling is fixedly connected with swing bevel gear; Be fixed with the fixed cone gear that is used for the swing bevel gear engagement on the casing; The output terminal of Hooks coupling universal coupling is connected with output shaft; The number of teeth of the gear ratio swing bevel gear of fixed cone gear is many.

Further improvement as technique scheme:

Be with needle bearing on the eccentric spindle nose, joint shaft bearing is enclosed within on the needle bearing.

A kind of little tooth difference speed reducer comprises casing, input shaft and output shaft, it is characterized in that: be provided with Hooks coupling universal coupling between input shaft and the output shaft; The end of input shaft is provided with eccentric spindle nose; Eccentric spindle nose is provided with selfaligning bearing; Selfaligning bearing is provided with bearing housing; The input end of Hooks coupling universal coupling is fixedly connected with bearing housing; The input end of Hooks coupling universal coupling is fixedly connected with swing bevel gear; Be fixed with the fixed cone gear that is used for the swing bevel gear engagement on the casing; The output terminal of Hooks coupling universal coupling is connected with output shaft; The number of teeth of the gear ratio swing bevel gear of fixed cone gear is many.

Many 1 or 2 or 3 of the number of teeth of the gear ratio swing bevel gear of fixed cone gear.

Crossed axis angle when fixed cone gear and swing bevel gear engagement is 150-178 °.

The fulcrum of Hooks coupling universal coupling is the vertex of a cone of swing bevel gear and fixed cone gear;

The input shaft that is positioned at casing is provided with Equilibrator.

Equilibrator comprises fan-shaped regulator plate and balancing weight; Regulator plate is fixed on the input shaft; The top of regulator plate is provided with slot; The both sides of regulator plate are respectively equipped with a fixed hole; Regulator plate is provided with the adjustment hole that is used for regulating the balancing weight position.

The top of balancing weight is provided with and is used for the inserted block that cooperates with slot; Have on the inserted block and be used for the jack that receiving bolt passes; The both sides of balancing weight are respectively equipped with the groove of a long strip.

The utility model adopts above technological scheme, compares with the existing technology scheme, has the following advantages: defeated

Go into axle one end eccentric spindle nose is set; Eccentric spindle nose is directly stirred the swing bevel gear rotation through needle bearing mounted thereto and joint shaft bearing, adopts Hooks coupling universal coupling to connect swing bevel gear and output shaft, compact structure; Crossed axis angle when fixed cone gear and swing bevel gear engagement is 150-178 °; Such layout makes the total number of teeth in engagement of fixed cone gear and swing bevel gear more than traditional gear transmission, and transmitting torque is big, can realize that big retarding is than, big load speed change, the problem that lays particular stress on when having solved the swing bevel gear rotation that is provided with of Equilibrator; The speed reducer motion is more steady, and noise is little.

Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.

Description of drawings

Accompanying drawing 1 is the structural representation of little tooth difference speed reducer among the utility model embodiment;

Accompanying drawing 2 is the structural representation of regulator plate among the utility model embodiment;

Accompanying drawing 3 be in the accompanying drawing 2 A-A to structural representation;

Accompanying drawing 4 is the structural representation of balancing weight among the utility model embodiment;

Accompanying drawing 5 be in the accompanying drawing 4 B-B to structural representation;

Accompanying drawing 6 is the plan view of accompanying drawing 4;

Among the figure,

The 1-output shaft, 2-felt collar, 3-bearing cap, the eccentric spindle nose of 4-, 5-set screw nut, 6-rolling bearing, 7-rolling bearing, 8-fixed cone gear; The 9-rolling bearing, 10-input shaft, 11-bearing cap, 12-felt collar, 13-set screw nut, 14-rolling bearing, 15-needle bearing; The 16-joint shaft bearing, 17-bearing housing, 18-swing bevel gear, 19-Hooks coupling universal coupling, 20-balancing weight, 21-regulator plate, 22-axle sleeve; The 23-slot, 24-fixed hole, 25-adjustment hole, 26-bolt hole, 27-inserted block, 28-groove, 29-jack.

Embodiment

Embodiment, as shown in Figure 1, a kind of little tooth difference speed reducer; Comprise casing, input shaft 10 and output shaft 1, be provided with Hooks coupling universal coupling 19 between input shaft 10 and the output shaft 1, input shaft 10 ends in the casing are provided with eccentric spindle nose 4; Be fixed with needle bearing 15 on the eccentric spindle nose 4, needle bearing 15 is provided with joint shaft bearing 16, and joint shaft bearing 16 is provided with bearing housing 17; Bearing housing 17 is fixedly connected with the input end of Hooks coupling universal coupling 19, is fixedly connected with swing bevel gear 18 on the input end of Hooks coupling universal coupling 19, is fixed with fixed cone gear 8 on the casing of output shaft 1 one sides; The profile of tooth of swing bevel gear 18 and fixed cone gear 8 is along circle distribution; Fixed cone gear 8 is connected with a joggle with swing bevel gear 18, and the crossed axis angle when fixed cone gear 8 meshes with swing bevel gear 18 is 150-178 °, is set to 170 ° in the present embodiment; The number of teeth of the gear ratio swing bevel gear 18 of fixed cone gear 8 is many; Number of teeth difference is 1 in the present embodiment, and the output terminal of Hooks coupling universal coupling 19 is connected with output shaft 1, and the fulcrum of Hooks coupling universal coupling 19 is the vertex of a cone of swing bevel gear 18 and fixed cone gear 8; The input shaft 10 that is positioned at casing is provided with Equilibrator, and Equilibrator comprises fan-shaped regulator plate 21 and balancing weight 20.

Like Fig. 2, shown in Figure 3; Regulator plate 21 is fixed on the input shaft 10 through axle sleeve 22; The top of regulator plate 21 is provided with slot 23; The both sides of regulator plate 21 are respectively equipped with a fixed hole 24, are provided with the adjustment hole 25 that is used for regulating balancing weight 20 positions between the slot 23 of regulator plate 21 and the endoporus of axle sleeve 22, and the bottom of axle sleeve 22 is provided with bolt hole 26.

Like Fig. 4, Fig. 5, shown in Figure 6, the top of balancing weight 20 is provided with two and is used for the inserted block 27 that cooperates with slot 23, has on the inserted block 27 to be used for the jack 29 that receiving bolt passes; The both sides of balancing weight 20 are respectively equipped with the groove 28 of a long strip; Groove 28 is used for cooperating with fixed hole 24, and the inserted block 27 of balancing weight 20 is cooperated with slot 23, passes jack 29 with bolt inserted block 27 is fixed on the regulator plate 21; Groove 28 is corresponding with the position of fixed hole 24; After regulating the position of inserted block 27 with bolt, bolt between groove 28 and fixed hole 24, the effect of laying particular stress on when balancing weight 20 plays the rotation of balance wheel dynamic bevel gear.

Be provided with rolling bearing 9 and rolling bearing 14 between input shaft 10 and the casing; Input shaft 10 stretches out between outer end of casing and the casing and is provided with set screw nut 13, bearing cap 11; Be provided with felt collar 12 between bearing cap 11 and the casing; Be provided with rolling bearing 6 and rolling bearing 7 between output shaft 1 and the casing, output shaft 1 stretches out between outer end of casing and the casing and is provided with set screw nut 5, bearing cap 3, is provided with felt collar 2 between bearing cap 3 and the casing.

Swing bevel gear 18 and 8 engagements of fixed cone gear, fixed cone gear 8 is quiet gears, fixed cone gear 8 is fixed on the casing, transfixion during work; Swing bevel gear 18 is moving gears, many 1 of the number of teeth of the gear ratio swing bevel gear 18 of fixed cone gear 8, and promptly fixed cone gear 8 is 1 with the number of teeth difference of swing bevel gear 18, has realized the transmission of few tooth difference;

Swing bevel gear 18 and fixed cone gear 8 fixed cone gear 8 center line levels when engagement; Swing bevel gear 18 center lines tilt; Crossed axis angle when fixed cone gear 8 meshes with swing bevel gear 18 is 160-175 °, and this crossed axis angle is relevant with the cone angle of swing bevel gear 18 with fixed cone gear 8.Such layout makes the total number of teeth in engagement of fixed cone gear 8 and swing bevel gear 18 far away more than traditional gear transmission, and the cone angle of the gear teeth is more little, and total number of teeth in engagement is few more; Otherwise cone angle is big more, and line of contact is long more, and is long then total number of teeth in engagement is many; Total number of teeth in engagement is many more, and bearing capacity is big more, and transmitting torque is big more.

Swing bevel gear 18 is gear rings, is fixed by bolts on the bearing housing 17, when input shaft 10 rotations; The eccentric spindle nose 4 shifting shaft bearing sleeves 17 of input shaft 10, bearing housing 17 is made a kind of compound motion with the parts that swing bevel gear 18 is formed through gear engagement, this motion both along fixed cone gear 8 centerline axis to swinging back and forth; Rotate along fixed cone gear 8 center lines again; Relevant, the different crossed axis angle of crossed axis angle of amplitude of fluctuation and swing bevel gear 18, fixed cone gear 8, its amplitude of fluctuation is different.Because of many 1 of the number of teeth of the gear ratio swing bevel gear 18 of fixed cone gear 8, through an oscillation cycle, each tooth of swing bevel gear 18 just meshes with the tooth of adjacent next fixed cone gear 8; Input shaft 10 rotates a circle, and swing bevel gear 18 turns over a tooth, just rotates through several angle α; If the number of teeth of swing bevel gear 18 is represented with z; α=360 °/z then, input shaft 10 rotation z change, and then swing bevel gear 18 rotates a circle.The rotating speed of swing bevel gear 18 has just been realized deceleration as output speed, and reduction speed ratio is z, and promptly the number of teeth of swing bevel gear 18 is exactly a reduction speed ratio.If Z=180, α=360 °/180=2 °, promptly input shaft 10 whenever turns around; Rotate 2 ° again in the time of swing bevel gear 18 swing one-periods, behind transfer input shaft 180 circles, swing bevel gear 18 swings 180 times; Rotate 2 ° * 180=360 °, promptly output shaft 1 turns around, and has so just formed 180:1; Be that reduction speed ratio is 180, equal the number of teeth of swing bevel gear 18.

Known that by above-mentioned deceleration principle swing bevel gear 18 swings have once just turned over 360 °/z at circumferencial direction, this rotatablely moves and passes to output shaft 1 through Hooks coupling universal coupling 19, makes output shaft 1 also turn over 360 °/z of same angle.Just input shaft 10 rotates a circle, 1 rotation 1/z week of output shaft.

Crossed axis angle when fixed cone gear 8 meshes with swing bevel gear 18 can also it be set to other angle in 150-178 ° as required, and the number of teeth difference of the gear ratio swing bevel gear 18 of fixed cone gear 8 can also be 2 or 3 or more.

Among the above embodiment, also can cancel needle bearing and use joint shaft bearing, joint shaft bearing and needle bearing to be used separately than independent use joint shaft bearing better effects if; Also can substitute joint shaft bearing and needle bearing with selfaligning bearing; When crossed axis angle or number of teeth difference changed or use selfaligning bearing separately, those skilled in the art can adjust accordingly according to parameter or the structure of common practise to retarder.

Claims

1. a little tooth difference speed reducer comprises casing, input shaft (10) and output shaft (1), it is characterized in that: be provided with Hooks coupling universal coupling (19) between input shaft (10) and the output shaft (1); The end of input shaft (10) is provided with eccentric spindle nose (4); Eccentric spindle nose (4) is provided with joint shaft bearing (16); Joint shaft bearing (16) is provided with bearing housing (17); The input end of Hooks coupling universal coupling (19) is fixedly connected with bearing housing (17); The input end of Hooks coupling universal coupling (19) is fixedly connected with swing bevel gear (18); Be fixed with the fixed cone gear (8) that is used for swing bevel gear (18) engagement on the casing; The output terminal of Hooks coupling universal coupling (19) is connected with output shaft (1); The number of teeth of the gear ratio swing bevel gear (18) of fixed cone gear (8) is many.

2. a kind of little tooth difference speed reducer as claimed in claim 1 is characterized in that: be with needle bearing (15) on the eccentric spindle nose (4), joint shaft bearing (16) is enclosed within on the needle bearing (15).

3. a little tooth difference speed reducer comprises casing, input shaft (10) and output shaft (1), it is characterized in that: be provided with Hooks coupling universal coupling (19) between input shaft (10) and the output shaft (1); The end of input shaft (10) is provided with eccentric spindle nose (4); Eccentric spindle nose (4) is provided with selfaligning bearing; Selfaligning bearing is provided with bearing housing (17); The input end of Hooks coupling universal coupling (19) is fixedly connected with bearing housing (17); The input end of Hooks coupling universal coupling (19) is fixedly connected with swing bevel gear (18); Be fixed with the fixed cone gear (8) that is used for swing bevel gear (18) engagement on the casing; The output terminal of Hooks coupling universal coupling (19) is connected with output shaft (1); The number of teeth of the gear ratio swing bevel gear (18) of fixed cone gear (8) is many.

4. like one of them described a kind of little tooth difference speed reducer of claim 1-3, it is characterized in that: many 1 or 2 or 3 of the number of teeth of the gear ratio swing bevel gear (18) of fixed cone gear (8).

5. like one of them described a kind of little tooth difference speed reducer of claim 1-3, it is characterized in that: the crossed axis angle when fixed cone gear (8) meshes with swing bevel gear (18) is 150-178 °.

6. like one of them described a kind of little tooth difference speed reducer of claim 1-3, it is characterized in that: the fulcrum of Hooks coupling universal coupling (19) is the vertex of a cone of swing bevel gear (18) and fixed cone gear (8).

7. a kind of little tooth difference speed reducer as claimed in claim 1 is characterized in that: the input shaft (10) that is positioned at casing is provided with Equilibrator.

8. a kind of little tooth difference speed reducer as claimed in claim 7 is characterized in that: Equilibrator comprises fan-shaped regulator plate (21) and balancing weight (20); Regulator plate (21) is fixed on the input shaft (10); The top of regulator plate (21) is provided with slot (23); The both sides of regulator plate (21) are respectively equipped with a fixed hole (24); Regulator plate (21) is provided with the adjustment hole (25) that is used for regulating balancing weight (20) position.

9. a kind of little tooth difference speed reducer as claimed in claim 8 is characterized in that: the top of balancing weight (20) is provided with and is used for the inserted block (27) that cooperates with slot (23); Have on the inserted block (27) and be used for the jack (29) that receiving bolt passes; The both sides of balancing weight (20) are respectively equipped with the groove (28) of a long strip.