CN202280795U

CN202280795U - Compact big transmission ratio reduction box

Info

Publication number: CN202280795U
Application number: CN2011203996957U
Authority: CN
Inventors: 韦伟; 刘备
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-19
Filing date: 2011-10-19
Publication date: 2012-06-20
Anticipated expiration: 2021-10-19

Abstract

The utility model discloses a compact big transmission ratio reduction box which adopts a two-stage worm and worm gear transmission mechanism. An input worm is assembled into the corresponding hole of a box body by a bearing, an input worm stuffy cover and an input worm through cover; an input belt pulley is connected with the outer end of the input worm; the input worm is meshed with a first-stage worm; the first-stage worm is assembled on a second-stage worm by a key; the second-stage worm is sheathed in the corresponding hole of the box body by a second-stage worm big sleeve cover and a second-stage worm small sleeve cover; the second-stage worm is meshed with the second-stage worm gear; the second-stage worm gear is assembled on an output shaft by the key; the output shaft is arranged in the corresponding hole of the box body by an output shaft stuffy cover and an output shaft through cover; and the cover plate of the box body is fixed on the box body by a bolt and a spring gasket. The compact big transmission ratio reduction box has the advantages of compact structure, small volume and big transmission ratio.

Description

Compact type big speed ratio speed reducer

Technical field

The utility model relates to a kind of mechanical transmission, especially a kind of compact type big speed ratio speed reducer.

Background technique

Speed reducer is that a kind of power is passed on mechanism, utilizes gear to realize the conversion of speed, the winding number of motor (motor) is decelerated to desired winding number, and obtain the mechanism of big torque.Be used for the mechanism of transferring power and motion at present, the application area of speed reducer is quite extensive.Almost in the transmission system of various machinery, can see its trace; From boats and ships, automobile, the locomotive of the traffic tool, heavy facility for building, machining machine and tool that mechanical industry is used and automated production equipment; Common household electrical appliances in the daily life, clock and watch or the like.From the transmission work of big power, to little load, accurate angle transmission can be seen the application of speed reducer, and on commercial Application, speed reducer has deceleration and increases the torque function.Therefore be widely used in the conversion equipment of speed and moment of torsion.

At present, the speed reducer on the market is generally gear transmission, and its transmission efficiency is high, can transmit bigger power.But when velocity ratio was very big, if use the ordinary gear transmission, then its structure can be very huge, seems very heavy.

The model utility content

The technical problem that the utility model solved is to provide a kind of compact type big speed ratio speed reducer, to solve the shortcoming in the above-mentioned background technology.

The technical problem that the utility model solved adopts following technological scheme to realize:

A kind of compact type big speed ratio speed reducer; Lid, input worm screw stifle, small sealing ring and bearing are formed thoroughly to pass through lid, big sealing ring, output shaft by casing, the big upper shield of second-stage worm, input belt wheel, input worm screw, first-stage worm gear, second-stage worm, box cover, second-stage worm gear, output shaft stifle, output shaft, the little upper shield of second-stage worm, input worm screw; Said input worm screw is passed through lid through bearing, input worm screw stifle and input worm screw and is assemblied in the corresponding aperture of casing; Said input belt wheel is connected with the outer end of input worm screw; Said input worm screw and first-stage worm gear engagement; Said first-stage worm gear is assemblied on the second-stage worm through key; Said second-stage worm is contained in the corresponding aperture of casing through big upper shield of second-stage worm and the little upper shield of second-stage worm, said second-stage worm and second-stage worm gear engagement, and said second-stage worm gear is assemblied on the output shaft through key; Said output shaft passes through lid through output shaft stifle and output shaft and is contained in the corresponding aperture of casing, and said box cover is fixed on the casing with screw and spring washer.

Said input worm screw is a left hand worm, and said second-stage worm is a right hand worm.

Beneficial effect: the utility model compact structure, volume is little, velocity ratio is big.

Description of drawings

Fig. 1 is the plan view of the utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1.

Wherein: 1. casing, the 2. big upper shield of second-stage worm, 3. input belt wheel, 4. input worm screw, 5. first-stage worm gear; 6. second-stage worm, 7. box cover, 8. second-stage worm gear, 9. output shaft stifle; 10. output shaft, the little upper shield of 11. second-stage worm, 12. input worm screws are passed through lid, 13. big sealing rings; 14. output shaft passes through lid, 15. input worm screw stifles, 16. small sealing rings, 17. bearings.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

The utility model has adopted the two-stage drive structure of gear worm; Promptly drive 4 rotations of input worm screw by input belt wheel 3, input worm screw 4 drives first-stage worm gear 5 and rotates, and first-stage worm gear 5 drives second-stage worm 6 rotations; Second-stage worm 6 drives second-stage worm gear 8 and rotates, and second-stage worm gear 8 drives output shaft 10 rotations.

As shown in Figure 3, input belt wheel 3 is contained on the diameter of axle on input worm screw 4 left sides, and it cooperates for H7/h6, fixes through the plane on the bolt and the diameter of axle.The tolerance that the inner ring of bearing 17 is contained in input belt wheel 3 the right on the input worm screw 4 is on the diameter of axle of k6, and the outer ring of bearing 17 is contained in the corresponding aperture of casing 1.The input worm screw is covered 12 usefulness bolts thoroughly and is fixed in the corresponding aperture of casing 1 with corresponding plain washer, between input belt wheel 3 and bearing 17.The input worm screw is covered 12 thoroughly the felt small sealing ring 16 that seals the diameter of axle is housed.In the corresponding aperture of input worm screw stifle 15 usefulness bolts and corresponding plain washer static housing 1, the endoporus of input worm screw stifle 15 is contained on the diameter of axle on input worm screw 4 the right, and it cooperates is F8/h7.The hole that bearing 17 and input worm screw stifle 15 are installed on the casing 1 is coaxial measure-alike through hole, and input worm screw stifle 15 is H7/f7 with cooperating of this hole.Input worm screw 4 is a left hand worm.

As shown in Figure 1, the first-stage worm gear 5 that meshes with input worm screw 4 is assemblied on the second-stage worm 6 through key.The big upper shield 2 usefulness bolts of second-stage worm are fixed in the corresponding aperture on casing 1 left side with corresponding plain washer, and the little upper shield 11 usefulness bolts of second-stage worm are fixed in the corresponding aperture on casing 1 the right with corresponding plain washer.The cylinder at second-stage worm 6 two ends is contained in that its cooperation all is F8/h7 in the endoporus of big upper shield of second-stage worm 2 and the little upper shield 11 of second-stage worm.The small end face restriction second-stage worm 6 of big upper shield 2 of second-stage worm and the little upper shield 11 of second-stage worm moves axially with first-stage worm gear 5, and certain clearance is arranged.Second-stage worm 6 is a right hand worm.

As shown in Figure 2; Be contained on the output shaft 10 through key with the second-stage worm gear 8 of second-stage worm 6 engagements; Output shaft stifle 9 usefulness bolts are fixed in the corresponding aperture on casing 1 left side with corresponding plain washer, and output shaft covers 14 usefulness bolts thoroughly and is fixed in the corresponding aperture on casing 1 the right with corresponding plain washer.Output shaft 10 is contained in output shaft stifle 9 and output shaft and covers thoroughly in 14 the hole, and its cooperation all is F8/h7.Output shaft covers 14 thoroughly the felt big sealing ring 13 that seals the diameter of axle is housed.Output shaft stifle 9 and output shaft are installed on the casing 1, and to cover 14 hole thoroughly be coaxial measure-alike through hole, and this hole is measure-alike with the hole that input worm screw stifle 15 is installed, in order that the identical cutter of time standby of casing 1 processing.

In order to make the axle that is contained in the casing 1 obtain sufficient lubrication, all there is oil inlet hole the top of big upper shield 2 of second-stage worm and the little upper shield 11 of second-stage worm, in their endoporus oil storage tank is arranged.

Box cover 7 usefulness screws and spring washer are fixed on above the casing 1.

More than show and described basic principle of the utility model and the advantage of major character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. compact type big speed ratio speed reducer; Lid, input worm screw stifle, small sealing ring and bearing are formed thoroughly to pass through lid, big sealing ring, output shaft by casing, the big upper shield of second-stage worm, input belt wheel, input worm screw, first-stage worm gear, second-stage worm, box cover, second-stage worm gear, output shaft stifle, output shaft, the little upper shield of second-stage worm, input worm screw; It is characterized in that; Said input worm screw is passed through lid through bearing, input worm screw stifle and input worm screw and is assemblied in the corresponding aperture of casing; Said input belt wheel is connected with the outer end of input worm screw; Said input worm screw and first-stage worm gear engagement, said first-stage worm gear is assemblied on the second-stage worm through key, and said second-stage worm is contained in the corresponding aperture of casing through big upper shield of second-stage worm and the little upper shield of second-stage worm; Said second-stage worm and second-stage worm gear engagement; Said second-stage worm gear is assemblied on the output shaft through key, and said output shaft passes through lid through output shaft stifle and output shaft and is contained in the corresponding aperture of casing, and said box cover is fixed on the casing with screw and spring washer.

2. compact type big speed ratio speed reducer according to claim 1 is characterized in that, said input worm screw is a left hand worm.

3. compact type big speed ratio speed reducer according to claim 1 is characterized in that said second-stage worm is a right hand worm.