CN210510158U - Long-axis double-end input worm gear box - Google Patents

Abstract

The utility model provides a major axis bi-polar input worm gear case belongs to transmission machinery technical field. It has solved the worm gear case on the current agricultural machinery and has had poor stability to the inconvenient problem of later stage maintenance. This major axis bi-polar input worm gear worm case, the power distribution box comprises a box body, worm wheel and worm, the transmission is connected through the parallel key between input shaft and the worm to the center of worm is worn to be equipped with, the one end of input shaft stretches out outside the box, the keyway has all been seted up to the tip and the middle part equidirectional of input shaft, the rear card of box is equipped with footstep bearing and has the end cover through the screw fixation, the tip and the end cover of this footstep bearing offset and lean on, and be provided with the adjusting washer between footstep bearing and the end cover, the one end of input shaft is installed in footstep bearing, the both sides that lie in the worm on the input. The utility model discloses it has the axle and rocks the advantage that the range small motion is more stable and later stage easy maintenance.

Description

Long-axis double-end input worm gear box

Technical Field

The utility model belongs to the technical field of the transmission machinery, a speed reducer is related to, in particular to major axis bi-polar input worm gear case.

Background

The worm and gear box is a gear box body used for transmitting power between two staggered shafts in a one-way mode, and compared with a conventional reduction gear box body, the transmission is large and has self-locking performance, but the transmission efficiency is low and the abrasion is fast, so that the worm and gear box is applied to mechanical equipment such as agricultural machinery with low precision requirements and large transmission more frequently.

Disclosure of Invention

The utility model aims at providing a structural design is more reasonable to operate stably to the above-mentioned problem that exists among the prior art to the convenient major axis bi-polar input worm gear case of later maintenance.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a major axis bi-polar input worm gear case, includes box, worm wheel and worm intermeshing set up in the box, its characterized in that, the center of worm is worn to be equipped with between input shaft and the worm through flat key connection transmission, the one end of input shaft stretches out outside the box, the keyway has all been seted up in the equidirectional in tip and the middle part of input shaft, the rear card of box is equipped with footstep bearing and has the end cover through the screw fixation, and the tip and the end cover of this footstep bearing offset and lean on, and is provided with the adjusting washer between footstep bearing and the end cover, the one end of input shaft is installed in footstep bearing, the input shaft on the both sides that lie in the worm all overlap and be equipped with the axle sleeve.

The technical effect of the long shaft double-end input worm and gear box is as follows: for traditional single-ended input, the utility model discloses two keyways have been seted up on the input shaft, all be used for connecting the prime mover and carry out the torsion transmission, can carry out bi-polar simultaneous input when needs increase torsion, and through the design of this structure, the input shaft middle part has increased the supporting effect in other words, the operation of axle is difficult for taking place to rock and split more steadily, furthermore, the tip of input shaft supports and adjusts the clearance through the adjusting washer with footstep bearing and end cover, it is higher to make the worm gear case whole assemble the less transmission efficiency in clearance after the equipment, wherein the end cover passes through the screw and the fixed dismantlement maintenance in its later stage of being convenient for of box.

In the long shaft double-end input worm gear box, the center of the worm gear is connected with an output shaft through an iron core, and two ends of the output shaft are supported by bearings arranged on the box body and fixed through a cover plate.

In the worm gear box with double ends of the long shaft input, the worm gear and the worm are made of ZCuAl10Fe3, and the iron core is made of HT250 gray cast iron.

And a plurality of solid plugs are arranged on the box body.

In the long shaft double-end input worm gear box, the top of the box body is provided with a ventilation plug.

In the long shaft double-end input worm gear box, a double-lip oil seal is arranged between the input shaft and the end face of the box body.

Compared with the prior art, the long-shaft double-end input worm and gear box has the advantages that double-end input is carried out by arranging the double key grooves on the input shaft, the worm is directly sleeved on the input shaft, and the worm and gear box has the advantages of small shaft sloshing amplitude, more stable operation and convenience in later maintenance.

Drawings

Fig. 1 is an axial sectional view of the present worm gear case.

Fig. 2 is a radial cross-sectional view of the present worm gear box.

Fig. 3 is a perspective view of the worm gear box.

In the figure, 1, a box body; 2. a worm gear; 3. a worm; 4. an input shaft; 5. a keyway; 6. a thrust bearing; 7. an end cap; 8. an adjusting washer; 9. a shaft sleeve; 10. a step portion; 11. an iron core; 12. an output shaft; 13. a cover plate; 14. a solid plug; 15. a venting plug; 16. double-lip oil seal.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the long-axis double-end input worm and gear box comprises a box body 1, a worm wheel 2 and a worm 3, the worm wheel 2 and the worm 3 are meshed with each other and arranged in the box body 1, an input shaft 4 is arranged in the center of the worm 3 in a penetrating mode, the input shaft 4 and the worm 3 are connected and driven through a flat key, one end of the input shaft 4 extends out of the box body 1, key grooves 5 are arranged in the end portion and the middle portion of the input shaft 4 in the same direction, an end cover 7 is arranged on the rear portion of the box body 1 in a clamped mode, the end portion of the thrust bearing 6 abuts against the end cover 7, an adjusting washer 8 is arranged between the thrust bearing 6 and the end cover 7, one end of the input shaft 4 is arranged in the thrust bearing 6, shaft sleeves 9 are respectively arranged on two sides of the worm 3 on the input shaft.

In more detail, the center of the worm wheel 2 is connected with an output shaft 12 through an iron core 11, two ends of the output shaft 12 are supported by bearings arranged on the box body 1 and fixed through a cover plate 13, the output shaft 12 is mounted on the worm wheel 2 through the iron core 11 so as to facilitate adjustment and replacement of output shafts 12 with different diameters, wherein the worm wheel 2 and the worm 3 are made of ZCuAl10Fe3, and the iron core 11 is made of HT250 gray cast iron.

Furthermore, a plurality of solid plugs 14 are arranged on the box body 1, a vent plug 15 is arranged at the top of the box body 1, the lubricating engine oil inside the box body 1 can be conveniently replaced due to the design of the solid plugs 14, the vent plug 15 is used for preventing the temperature and pressure inside the box body 1 from increasing and damaging the sealing structure, and a double-lip oil seal 16 is arranged between the input shaft 4 and the end face of the box body 1.

Furthermore, the speed ratio of the worm gear box is 5:1, the end face modulus 4.233 and the tooth number 4/20.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the housing 1, the worm wheel 2, the worm 3, the input shaft 4, the key slot 5, the thrust bearing 6, the end cap 7, the adjusting washer 8, the shaft sleeve 9, the step 10, the iron core 11, the output shaft 12, the cover plate 13, the solid plug 14, the breather plug 15, the double-lip oil seal 16, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (6)

1. The utility model provides a major axis bi-polar input worm gear case, includes box (1), worm wheel (2) and worm (3) intermeshing set up in box (1), its characterized in that, the center of worm (3) is worn to be equipped with input shaft (4) and worm (3) between be connected the transmission through the parallel key, the one end of input shaft (4) stretches out outside box (1), the tip and the middle part of input shaft (4) all have seted up keyway (5) in the syntropy, the rear card of box (1) is equipped with footstep bearing (6) and has end cover (7) through the screw fixation, and the tip of this footstep bearing (6) offsets with end cover (7) and leans on, and is provided with between footstep bearing (6) and end cover (7) adjusting washer (8), the one end of input shaft (4) is installed in footstep bearing (6), the two sides of the input shaft (4) on the worm (3) are respectively sleeved with a shaft sleeve (9), and the outer sides of the two shaft sleeves (9) are respectively abutted against step parts (10) of the thrust bearing (6) and the input shaft (4).

2. The long-axis double-end input worm and gear box as claimed in claim 1, characterized in that the center of the worm gear (2) is connected with an output shaft (12) through an iron core (11), and the two ends of the output shaft (12) are supported by bearings arranged on the box body (1) and fixed through a cover plate (13).

3. The worm-gear box with long shaft and double ends input as claimed in claim 2, characterized in that the material of the worm wheel (2) and the worm (3) is ZCuAl10Fe3, and the material of the iron core (11) is HT250 gray cast iron.

4. The worm and gear box with long shaft and double ends input as claimed in claim 1, characterized in that the box body (1) is provided with a plurality of solid plugs (14).

5. The long-axis double-end input worm and gear box as claimed in claim 1, characterized in that the top of the box body (1) is provided with a ventilation plug (15).

6. The long-shaft double-end input worm and gear box is characterized in that a double-lip oil seal (16) is arranged between the input shaft (4) and the end face of the box body (1).

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