CN214838178U - Helical gear speed reducer of high moment of torsion - Google Patents

Abstract

The utility model discloses a high-torque helical gear reducer, which comprises a box body and an input cover, wherein a driven component and a transmission component are arranged in the box body, and a driving component is arranged in the input cover; a supporting seat is welded on the inner wall of one side of the box body; the driven assembly comprises an output shaft and an output driven gear, a first key is integrally arranged at one end, far away from the output driven gear, of the output shaft, a third key is integrally arranged at one end, close to the output driven gear, of the output shaft, and the output shaft is connected to the inner wall of the output driven gear in a clamping mode through the third key. The utility model discloses a set up input shaft, output driving gear axle and output shaft isotructure, and because output shaft, output driving gear axle and input shaft all support through two deep groove ball bearings, ensured rotational stability and smoothness nature, set up the bearing between output driven gear and input driven gear, can be convenient for open the input lid and maintain the change to input driven gear, compact structure, transmission performance is good.

Description

Helical gear speed reducer of high moment of torsion

Technical Field

The utility model relates to a gear reducer technical field especially relates to a helical gear reduction unit of high moment of torsion.

Background

The gear reducer is an independent closed transmission device between a prime motor and a working machine, is used for reducing the rotating speed and increasing the torque, meets the requirement of small space and high torque output, is also used for increasing the speed in certain occasions, and is widely applied to the fields of large mines, steel, chemical industry, ports, environmental protection and the like; although the conventional gear reducer can meet certain use requirements, the problem that the structure is not compact enough exists, and part of the gear reducer processes the box body into a small size, so that gears and shafts are tightly arranged in the box body, the structure is compact, but the smoothness of rotation of the gear reducer cannot be well guaranteed; therefore, how to combine the smoothness of operation and the compactness of structure is one of the important issues to be considered in the design of the gear reducer.

Through the retrieval, chinese patent application number is CN 201520935573.3's patent, discloses a second grade gear reducer, one-level pinion, reduction gear input shaft, one-level gear wheel, reduction gear base, oil blanket, reduction gear output shaft, bearing, second grade gear shaft, left box lid, reduction gear box fixed mounting on reduction gear base, left box lid install on reduction gear box, reduction gear input shaft install on left box lid, the one-level pinion is installed on the reduction gear input shaft, the second grade gear wheel install in reduction gear box, reduction gear output shaft installs on the second grade gear wheel, reduction gear output shaft and reduction gear box between install through the oil blanket, the second grade gear shaft pass through the bearing and install the bottom at reduction gear box, the one-level gear wheel is installed on the second grade gear shaft. The two-stage gear reducer in the above patent has the following disadvantages: the working smoothness and the structural compactness can not be well considered, and in the working process, the supporting points are fewer, so that the use smoothness is influenced.

Disclosure of Invention

The utility model aims at solving the shortcomings existing in the prior art and providing a helical gear reducer with high torque.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-torque helical gear reducer comprises a box body and an input cover, wherein a driven assembly and a transmission assembly are arranged in the box body, and a driving assembly is arranged in the input cover; a supporting seat is welded on the inner wall of one side of the box body; the driven assembly comprises an output shaft and an output driven gear, a first key is integrally arranged at one end of the output shaft, which is far away from the output driven gear, a third key is integrally arranged at one end of the output shaft, which is close to the output driven gear, the output shaft is clamped on the inner wall of the output driven gear through the third key, and the output shaft is rotatably arranged on the output shaft and the inner wall of the supporting seat through a first deep groove ball bearing and a sixth deep groove ball bearing respectively; the transmission assembly comprises an output driving gear shaft and an input driven gear, a second key is integrally arranged at one end of the output driving gear shaft, the output driving gear shaft is clamped on the inner wall of the input driven gear through the second key, the output driving gear shaft is rotatably arranged on the inner wall of the output shaft through a second deep groove ball bearing, the output driving gear shaft is further rotatably arranged between the inner wall of one side of the output shaft and the outer wall of one side of the supporting seat through a third deep groove ball bearing, and the output driven gear is meshed with the output driving gear shaft; the driving assembly comprises an input shaft and an input driving pinion, the input driving pinion is integrally arranged at one end of the input shaft, the input shaft is rotatably arranged on the inner wall of the input cover through a fourth deep groove ball bearing and a fifth deep groove ball bearing, and the input driving pinion is meshed with the input driven gear; the input driven gear is positioned on one side of the supporting seat close to the input cover, and the output driven gear is positioned on one side of the supporting seat far away from the input cover.

As a further aspect of the present invention: one side, away from the input cover, of the outer ring of the first deep groove ball bearing is provided with a first hole elastic retainer ring, the first hole elastic retainer ring is clamped on the inner wall of the box body, and the other side of the outer ring of the first deep groove ball bearing is clamped on the inner wall of the output shaft; a second spacing ring is arranged on one side, close to the input cover, of the inner ring of the first deep groove ball bearing, a sixth shaft elastic retainer ring is arranged on one side, close to the input cover, of the second spacing ring, the sixth shaft elastic retainer ring is clamped on the outer circumferential wall of the output shaft, and the other side of the inner ring of the first deep groove ball bearing is clamped on the outer circumferential wall of the output shaft; a fifth-axis elastic check ring is arranged on one side, close to the input cover, of the output driven gear, the fifth-axis elastic check ring is clamped on the outer circumferential wall of the output shaft, the other side of the output driven gear is clamped on the outer circumferential wall of the output shaft, one side, far away from the input cover, of the outer ring of the sixth deep groove ball bearing is clamped on the inner wall of the supporting seat, one side, far away from the input cover, of the inner ring of the sixth deep groove ball bearing is clamped on the outer circumferential wall of the output shaft, a fourth-hole elastic check ring is arranged on one side, close to the input cover, of the inner ring of the sixth deep groove ball bearing, and the fourth-hole elastic check ring is installed on the outer circumferential wall of the output shaft in an embedded mode; and the inner diameters of the first deep groove ball bearing, the output driven gear and the sixth deep groove ball bearing are reduced in sequence.

As a further aspect of the present invention: one side, far away from the input cover, of the outer ring of the second deep groove ball bearing is clamped on the inner wall of the box body, the outer wall, close to the input cover, of the inner ring of the second deep groove ball bearing is clamped on the output driving gear shaft, one side, far away from the input cover, of the inner ring of the third deep groove ball bearing is provided with a first shaft elastic check ring, the first shaft elastic check ring is installed on the outer wall of the circumference of the output driving gear shaft in an embedded mode, one side, near the input cover, of the outer ring of the third deep groove ball bearing is provided with a second hole elastic check ring, the second hole elastic check ring is installed on the inner wall of the box body in an embedded mode, and the same first spacing ring is arranged between one side, near the input cover, of the inner ring of the third deep groove ball bearing and one side, far away from the input cover, of the input driven gear; and one side of the input driven gear, which is close to the input cover, is provided with a second shaft elastic check ring, and the second shaft elastic check ring is embedded in the circumferential outer wall at one end of the output driving gear shaft.

As a further aspect of the present invention: one side joint that fourth deep groove ball bearing outer lane is close to the box is in input lid one side inner wall, and one side that fourth deep groove ball bearing inner circle is close to the box is provided with circlip for the third axle, and circlip for the third axle is embedded to be installed in the circumference outer wall of input shaft, one side that fourth deep groove ball bearing kept away from the box is provided with circlip for the third hole, and circlip for the third hole is embedded to be installed in the circumference inner wall of input lid.

As a further aspect of the present invention: an oil plug is detachably arranged on the inner wall of the top of the input cover; and the outer wall of the bottom of the box body is fixedly provided with a base through a screw and a cylindrical pin.

As a further aspect of the present invention: a sealing gasket is arranged between the box body and the input cover; an input flange is detachably arranged on the outer wall of one side of the input cover and is positioned on the outer side of one end of the input shaft; an output flange is detachably fixed on the outer wall of one side of the box body, which is far away from the input cover, and the output flange is positioned on the outer side of the output shaft; and the outer walls of two sides of the outer ring of the fifth deep groove ball bearing are respectively clamped between the inner wall of one side of the input cover and the outer wall of one end of the input flange.

As a further aspect of the present invention: and the same first oil seal is arranged between the circumferential inner wall at one end of the box body and the circumferential outer side of the output shaft.

As a further aspect of the present invention: and the same second oil seal is arranged between the inner wall of the circumference of one end of the input cover and the outer side of the circumference of the input shaft.

As a further aspect of the present invention: one end of the input cover is of a hollow truncated cone structure, and the radius of the truncated cone structure of the input cover is gradually reduced towards the direction close to the output shaft.

The utility model has the advantages that:

1. the utility model discloses a set up the input shaft, output drive gear axle and output shaft isotructure, can rotate through the drive input shaft, pass through input driven gear in proper order, circlip for the primary shaft, the linkage of output driven gear and output shaft, reach the effect of speed reduction, and because the output shaft, output drive gear axle and input shaft all support through two deep groove ball bearings, rotational stability and smoothness nature have been ensured, and set up the bearing between output driven gear and input driven gear, can be convenient for open the input lid and maintain the change input driven gear, whole compact structure, transmission performance is good.

2. Through the joint structure who sets up first deep groove ball bearing, output driven gear and sixth deep groove ball bearing, can follow the one end that the output shaft is close to the input lid and install first deep groove ball bearing, output driven gear and sixth deep groove ball bearing according to the preface to it is fixed to utilize each retaining ring to carry out the joint, and it is convenient to install, has ensured fixed effect simultaneously.

3. Through the clamping and fixing mode of arranging the second deep groove ball bearing, the third deep groove ball bearing and the input driven gear, when the fixing firmness is ensured, the smoothness and the stability of rotation during the work are ensured.

4. Through setting up first oil blanket, second oil blanket, can effectively avoid the lubricating oil of first deep groove ball bearing, fourth deep groove ball bearing etc. department to spill over from the seam crossing, promoted the reliability.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

In the figure: 1-output shaft, 2-first key, 3-first oil seal, 4-elastic check ring for first hole, 5-first deep groove ball bearing, 6-box, 7-second deep groove ball bearing, 8-output driving gear shaft, 9-elastic check ring for first shaft, 10-third deep groove ball bearing, 11-first spacing ring, 12-elastic check ring for second hole, 13-second key, 14-input driven gear, 15-elastic check ring for second shaft, 16-second oil seal, 17-fourth deep groove ball bearing, 18-oil plug, 19-input flange, 20-input shaft, 21-fifth deep groove ball bearing, 22-input cover, 23-elastic check ring for third hole, 24-elastic check ring for third hole, 25-sealing gasket, 26-an input driving pinion, 27-a circlip for a fourth hole, 28-a sixth deep groove ball bearing, 29-a supporting seat, 30-a circlip for a fifth shaft, 31-a cylindrical pin, 32-a third key, 33-an output driven gear, 34-a base, 35-a circlip for a sixth shaft, 36-a second spacer ring and 37-an output flange.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

A high-torque helical gear reducer comprises a box body 6 and an input cover 22, wherein a driven component and a transmission component are arranged in the box body 6, and a driving component is arranged in the input cover 22; a supporting seat 29 is welded on the inner wall of one side of the box body 6; the driven assembly comprises an output shaft 1 and an output driven gear 33, a first key 2 is integrally arranged at one end, far away from the output driven gear 33, of the output shaft 1, a third key 32 is integrally arranged at one end, close to the output driven gear 33, of the output shaft 1, the output shaft 1 is clamped on the inner wall of the output driven gear 33 through the third key 32, and the output shaft 1 is rotatably arranged on the inner walls of the output shaft 1 and the supporting seat 29 through a first deep groove ball bearing 5 and a sixth deep groove ball bearing 28 respectively; the transmission assembly comprises an output driving gear shaft 8 and an input driven gear 14, a second key 13 is integrally arranged at one end of the output driving gear shaft 8, the output driving gear shaft 8 is clamped on the inner wall of the input driven gear 14 through the second key 13, the output driving gear shaft 8 is rotatably arranged on the inner wall of the output shaft 1 through a second deep groove ball bearing 7, the output driving gear shaft 8 is further rotatably arranged between the inner wall of one side of the output shaft 1 and the outer wall of one side of the supporting seat 29 through a third deep groove ball bearing 10, and an output driven gear 33 is meshed with the output driving gear shaft 8; the driving assembly comprises an input shaft 20 and an input driving pinion 26, the input driving pinion 26 is integrally arranged at one end of the input shaft 20, the input shaft 20 is rotatably arranged on the inner wall of the input cover 22 through a fourth deep groove ball bearing 17 and a fifth deep groove ball bearing 21, and the input driving pinion 26 is meshed with the input driven gear 14; the input driven gear 14 is positioned on one side of the supporting seat 29 close to the input cover 22, and the output driven gear 33 is positioned on one side of the supporting seat 29 far away from the input cover 22; through setting up input shaft 20, output driving gear axle 8 and output shaft 1 isotructure, can rotate through drive input shaft 20, pass through input driven gear 14 in proper order, circlip 9 for the primary shaft, output driven gear 33 and output shaft 1's linkage, reach the effect of speed reduction, and because output shaft 1, output driving gear axle 8 and input shaft 20 all support through two deep groove ball bearings, rotational stability and smoothness nature have been ensured, and set up bearing 29 between output driven gear 33 and input driven gear 14, can be convenient for open input lid 22 and maintain the change to input driven gear 14, whole compact structure, transmission performance is good.

In order to facilitate the fixing of the first deep groove ball bearing 5, the output driven gear 33 and the sixth deep groove ball bearing 28; as shown in fig. 1, a first hole circlip 4 is arranged on one side of the outer ring of the first deep groove ball bearing 5, which is far away from the input cover 22, the first hole circlip 4 is clamped on the inner wall of the box body 6, and the other side of the outer ring of the first deep groove ball bearing 5 is clamped on the inner wall of the output shaft 1; a second spacing ring 36 is arranged on one side, close to the input cover 22, of the inner ring of the first deep groove ball bearing 5, a sixth shaft elastic check ring 35 is arranged on one side, close to the input cover 22, of the second spacing ring 36, the sixth shaft elastic check ring 35 is clamped on the outer circumferential wall of the output shaft 1, and the other side of the inner ring of the first deep groove ball bearing 5 is clamped on the outer circumferential wall of the output shaft 1; a fifth-axis elastic check ring 30 is arranged on one side, close to the input cover 22, of the output driven gear 33, the fifth-axis elastic check ring 30 is connected to the circumferential outer wall of the output shaft 1 in a clamping mode, the other side of the output driven gear 33 is connected to the circumferential outer wall of the output shaft 1 in a clamping mode, one side, far away from the input cover 22, of the outer ring of the sixth deep groove ball bearing 28 is connected to the inner wall of the supporting seat 29 in a clamping mode, one side, far away from the input cover 22, of the inner ring of the sixth deep groove ball bearing 28 is connected to the circumferential outer wall of the output shaft 1 in a clamping mode, a fourth-hole elastic check ring 27 is arranged on one side, close to the input cover 22, of the inner ring of the sixth deep groove ball bearing 28, and the fourth-hole elastic check ring 27 is installed on the circumferential outer wall of the output shaft 1 in an embedded mode; the inner diameters of the first deep groove ball bearing 5, the output driven gear 33 and the sixth deep groove ball bearing 28 are reduced in sequence; through the joint structure who sets up first deep groove ball bearing 5, output driven gear 33 and sixth deep groove ball bearing 28, can follow the one end that output shaft 1 is close to input cover 22 and install first deep groove ball bearing 5, output driven gear 33 and sixth deep groove ball bearing 28 in proper order to it is fixed to utilize each retaining ring to carry out the joint, and it is convenient to install, has ensured fixed effect simultaneously.

In order to facilitate the fixing of the second deep groove ball bearing 7, the third deep groove ball bearing 10 and the input driven gear 14; as shown in fig. 1, one side of the outer ring of the second deep groove ball bearing 7, which is far away from the input cover 22, is clamped to the inner wall of the box body 6, the outer wall of one side of the inner ring of the second deep groove ball bearing 7, which is near to the input cover 22, is clamped to the output driving gear shaft 8, one side of the inner ring of the third deep groove ball bearing 10, which is far away from the input cover 22, is provided with a first shaft elastic check ring 9, the first shaft elastic check ring 9 is embedded in the outer circumferential wall of the output driving gear shaft 8, one side of the outer ring of the third deep groove ball bearing 10, which is near to the input cover 22, is provided with a second hole elastic check ring 12, the second hole elastic check ring 12 is embedded in the inner wall of the box body 6, and the same first spacer ring 11 is arranged between one side of the inner ring of the third deep groove ball bearing 10, which is near to the input cover 22, and one side of the input driven gear 14, which is far away from the input cover 22; a second shaft elastic retainer ring 15 is arranged on one side, close to the input cover 22, of the input driven gear 14, and the second shaft elastic retainer ring 15 is installed on the circumferential outer wall of one end of the output driving gear shaft 8 in an embedded mode; through the clamping and fixing mode of arranging the second deep groove ball bearing 7, the third deep groove ball bearing 10 and the input driven gear 14, the fixing firmness is ensured, and meanwhile, the smoothness and stability of rotation during working are guaranteed.

To facilitate the fixing of the fourth deep groove ball bearing 17; as shown in fig. 1, one side of the outer ring of the fourth deep groove ball bearing 17, which is close to the box 6, is clamped to the inner wall of one side of the input cover 22, one side of the inner ring of the fourth deep groove ball bearing 17, which is close to the box 6, is provided with a third elastic retainer ring 24, the third elastic retainer ring 24 is installed on the outer circumferential wall of the input shaft 20 in an embedded manner, one side of the fourth deep groove ball bearing 17, which is far away from the box 6, is provided with a third elastic retainer ring 23 for holes, and the third elastic retainer ring 23 for holes is installed on the inner circumferential wall of the input cover 22 in an embedded manner.

In order to improve the practicability; as shown in fig. 1 and 2, an oil plug 18 is detachably mounted on the inner wall of the top of the input cover 22; and a base 34 is fixed on the outer wall of the bottom of the box body 6 through screws and cylindrical pins 31.

To facilitate tight installation; as shown in fig. 1 and 2, a gasket 25 is arranged between the box body 6 and the input cover 22; an input flange 19 is detachably mounted on the outer wall of one side of the input cover 22 through screws, and the input flange 19 is positioned on the outer side of one end of the input shaft 20; an output flange 37 is detachably fixed on the outer wall of one side of the box body 6, which is far away from the input cover 22, through screws, and the output flange 37 is positioned on the outer side of the output shaft 1; and the outer walls of two sides of the outer ring of the fifth deep groove ball bearing 21 are respectively clamped between the inner wall of one side of the input cover 22 and the outer wall of one end of the input flange 19.

In order to improve reliability; as shown in fig. 1, the same first oil seal 3 is arranged between the circumferential inner wall of one end of the box body 6 and the circumferential outer side of the output shaft 1; through setting up first oil blanket 3, can effectively avoid the lubricating oil of first deep groove ball bearing 5 etc. department to spill over from the seam crossing, promoted the reliability.

To further improve reliability; as shown in fig. 1, the same second oil seal 16 is arranged between the inner circumferential wall of one end of the input cover 22 and the outer circumferential side of the input shaft 20; through setting up second oil blanket 16, can effectively avoid the lubricating oil of fourth deep groove ball bearing 17 etc. to spill over from the seam crossing, promoted the reliability.

The working principle is as follows: when in use, the user connects the driving end with the input shaft 20, and can drive the output shaft 1 to rotate by driving the input shaft 20 to rotate and sequentially through the linkage of the input driven gear 14, the elastic retainer ring 9 for the first shaft and the output driven gear 33, since the radius of rotation of the output driven gear 33 is greater than the radius of rotation of the output drive gear shaft 8, the radius of rotation of the input driven gear 14 is greater than the radius of rotation of the input drive pinion 26, thereby achieving the effect of multiple speed reduction, and because the output shaft 1, the output driving gear shaft 8 and the input shaft 20 are all supported by two deep groove ball bearings, the rotation stability and the fluency are greatly ensured, and the supporting seat 29 is arranged between the output driven gear 33 and the input driven gear 14, so that the input cover 22 can be conveniently opened to repair and replace the input driven gear 14, the whole structure is compact, and the transmission performance is good.

Example 2

In order to improve structural firmness; referring to fig. 1, the present embodiment is an improvement of the helical gear speed reducer with high torque compared to embodiment 1: one end of the input cover 22 is a hollow truncated cone structure, and the radius of the truncated cone structure of the input cover 22 gradually decreases towards the direction close to the output shaft 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (9)

1. A high-torque helical gear reducer comprises a box body (6) and an input cover (22), and is characterized in that a driven assembly and a transmission assembly are arranged in the box body (6), and a driving assembly is arranged in the input cover (22); a supporting seat (29) is welded on the inner wall of one side of the box body (6); the driven assembly comprises an output shaft (1) and an output driven gear (33), a first key (2) is integrally arranged at one end, far away from the output driven gear (33), of the output shaft (1), a third key (32) is integrally arranged at one end, close to the output driven gear (33), of the output shaft (1), the output shaft (1) is connected to the inner wall of the output driven gear (33) in a clamping mode through the third key (32), and the output shaft (1) is rotatably mounted on the inner walls of the output shaft (1) and the supporting seat (29) through a first deep groove ball bearing (5) and a sixth deep groove ball bearing (28) respectively; the transmission assembly comprises an output driving gear shaft (8) and an input driven gear (14), a second key (13) is integrally arranged at one end of the output driving gear shaft (8), the output driving gear shaft (8) is clamped on the inner wall of the input driven gear (14) through the second key (13), the output driving gear shaft (8) is rotatably installed on the inner wall of the output shaft (1) through a second deep groove ball bearing (7), the output driving gear shaft (8) is also rotatably installed between the inner wall of one side of the output shaft (1) and the outer wall of one side of the supporting seat (29) through a third deep groove ball bearing (10), and the output driven gear (33) is meshed with the output driving gear shaft (8); the driving assembly comprises an input shaft (20) and an input driving pinion (26), the input driving pinion (26) is integrally arranged at one end of the input shaft (20), the input shaft (20) is rotatably arranged on the inner wall of an input cover (22) through a fourth deep groove ball bearing (17) and a fifth deep groove ball bearing (21), and the input driving pinion (26) is meshed with an input driven gear (14); the input driven gear (14) is positioned on one side of the supporting seat (29) close to the input cover (22), and the output driven gear (33) is positioned on one side of the supporting seat (29) far away from the input cover (22).

2. The helical gear reducer with high torque as claimed in claim 1, wherein a first hole circlip (4) is arranged on one side of the outer ring of the first deep groove ball bearing (5) far away from the input cover (22), the first hole circlip (4) is clamped on the inner wall of the box body (6), and the other side of the outer ring of the first deep groove ball bearing (5) is clamped on the inner wall of the output shaft (1); a second spacing ring (36) is arranged on one side, close to the input cover (22), of the inner ring of the first deep groove ball bearing (5), a sixth elastic check ring (35) is arranged on one side, close to the input cover (22), of the second spacing ring (36), the sixth elastic check ring (35) is clamped on the outer circumferential wall of the output shaft (1), and the other side of the inner ring of the first deep groove ball bearing (5) is clamped on the outer circumferential wall of the output shaft (1); a fifth-axis elastic check ring (30) is arranged on one side, close to the input cover (22), of the output driven gear (33), the fifth-axis elastic check ring (30) is clamped on the circumferential outer wall of the output shaft (1), the other side of the output driven gear (33) is clamped on the circumferential outer wall of the output shaft (1), one side, far away from the input cover (22), of the outer ring of the sixth deep groove ball bearing (28) is clamped on the inner wall of the supporting seat (29), one side, far away from the input cover (22), of the inner ring of the sixth deep groove ball bearing (28) is clamped on the circumferential outer wall of the output shaft (1), a fourth-hole elastic check ring (27) is arranged on one side, close to the input cover (22), of the inner ring of the sixth deep groove ball bearing (28), and the fourth-hole elastic check ring (27) is installed on the circumferential outer wall of the output shaft (1) in an embedded mode; and the inner diameters of the first deep groove ball bearing (5), the output driven gear (33) and the sixth deep groove ball bearing (28) are reduced in sequence.

3. The helical gear reducer with high torque as claimed in claim 2, wherein one side of the outer ring of the second deep groove ball bearing (7) far away from the input cover (22) is clamped on the inner wall of the box body (6), the outer wall of one side of the inner ring of the second deep groove ball bearing (7) near the input cover (22) is clamped on the output driving gear shaft (8), one side of the inner ring of the third deep groove ball bearing (10) far away from the input cover (22) is provided with a first shaft elastic check ring (9), the first shaft elastic check ring (9) is embedded on the circumferential outer wall of the output driving gear shaft (8), one side of the outer ring of the third deep groove ball bearing (10) near the input cover (22) is provided with a second hole elastic check ring (12), the second hole elastic check ring (12) is embedded on the inner wall of the box body (6), one side of the inner ring of the third deep groove ball bearing (10) near the input cover (22) and one side of the input driven gear (14) far away from the input cover (22) One side of the first spacer ring is provided with the same first spacer ring (11); and one side of the input driven gear (14) close to the input cover (22) is provided with a second shaft elastic retainer ring (15), and the second shaft elastic retainer ring (15) is embedded in the circumferential outer wall of one end of the output driving gear shaft (8).

4. The helical gear reducer with high torque as claimed in claim 3, wherein one side of the outer ring of the fourth deep groove ball bearing (17) close to the box body (6) is clamped on the inner wall of one side of the input cover (22), one side of the inner ring of the fourth deep groove ball bearing (17) close to the box body (6) is provided with a third elastic check ring (24) for a third shaft, the third elastic check ring (24) for the third shaft is embedded in the outer circumferential wall of the input shaft (20), one side of the fourth deep groove ball bearing (17) far away from the box body (6) is provided with a third elastic check ring (23) for a third hole, and the third elastic check ring (23) for the third hole is embedded in the inner circumferential wall of the input cover (22).

5. A high torque helical gear reducer according to claim 1 wherein said input cover (22) is removably fitted with an oil plug (18) on the top inner wall; and a base (34) is fixed on the outer wall of the bottom of the box body (6) through screws and cylindrical pins (31).

6. A high torque helical gear reducer according to claim 1, wherein a gasket (25) is provided between said case (6) and said input cover (22); an input flange (19) is detachably mounted on the outer wall of one side of the input cover (22), and the input flange (19) is positioned on the outer side of one end of the input shaft (20); an output flange (37) is detachably fixed on the outer wall of one side, away from the input cover (22), of the box body (6), and the output flange (37) is located on the outer side of the output shaft (1); and the outer walls of two sides of the outer ring of the fifth deep groove ball bearing (21) are respectively clamped between the inner wall of one side of the input cover (22) and the outer wall of one end of the input flange (19).

7. A high torque helical gear reducer according to claim 1, wherein the same first oil seal (3) is provided between the inner circumferential wall of one end of said housing (6) and the outer circumferential side of said output shaft (1).

8. A high torque helical gear reducer according to claim 1, wherein the same second oil seal (16) is provided between an inner circumferential wall of one end of said input cover (22) and an outer circumferential side of said input shaft (20).

9. A high torque helical gear reducer according to any one of claims 1-8, wherein one end of said input cover (22) is of a hollow truncated cone type configuration, and the radius of the truncated cone type configuration of the input cover (22) is gradually reduced toward the output shaft (1).

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