CN215720646U

CN215720646U - Speed reducer gear with high wear resistance

Info

Publication number: CN215720646U
Application number: CN202122385160.0U
Authority: CN
Inventors: 徐小风; 欧建华
Original assignee: Hangzhou Gencheng Machinery Co ltd
Current assignee: Hangzhou Gencheng Machinery Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-01
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a speed reducer gear with high wear resistance, which comprises a driving gear and a driven gear, wherein an annular groove and first gear teeth are formed in the outer ring surface of the driving gear, a first shaft hole is formed in the driving gear, a first key groove is formed in the first shaft hole, second gear teeth are formed in the outer ring surface of the driven gear, annular convex parts are reserved between the second gear teeth, through holes are formed in the annular convex parts, a second shaft hole is formed in the center of the driven gear, a second key groove is formed in the second shaft hole, the annular convex parts are matched to rotate in the annular groove, the gear rotation is limited, the gear is prevented from being offset or misplaced, and the gear meshing is firmer; the second gear teeth are integrally connected with the annular convex parts between the second gear teeth, so that the connecting area of one side of the second gear teeth and the annular convex parts is increased, and the breakage of the gear during rotation is reduced; the through holes on the driven gear play a heat dissipation role on the gear, the gear oil belt is favorable for lubricating the gear, the abrasion and the damage to the gear are reduced, and the service life of the gear is prolonged.

Description

Speed reducer gear with high wear resistance

Technical Field

The utility model belongs to the technical field of speed reducer gears, and particularly relates to a speed reducer gear with high wear resistance.

Background

The speed reducer is used for matching rotating speed and transmitting torque between a prime mover and a working machine or an actuating mechanism, and is widely applied to modern machines. The gear is a mechanical element with a gear on a wheel rim continuously engaged to transmit motion and power, the gear is used as a common power transmission part, the gear is mostly arranged on a rotating shaft through a shaft hole, the rotation of the rotating shaft can drive the gear to rotate, and therefore the gear is matched with a matched gear or a matched rack to transmit the rotation.

The existing gear has poor wear resistance, and the gear can deviate or be dislocated in the long-term gear rotating and meshing transmission process, so that the gear is greatly abraded and damaged, and the service life of the gear is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a speed reducer gear with high wear resistance, and the speed reducer gear is used for solving the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a speed reducer gear with high wear resistance comprises a driving gear and a driven gear, wherein an annular groove is circumferentially formed in the middle of the outer ring surface of the driving gear, first gear teeth which are identical in size and correspond to each other one by one are formed in two adjacent sides of the annular groove on the driving gear, a first shaft hole is formed in the center of the driving gear, a plurality of first key grooves are formed in the inner wall of the first shaft hole, a plurality of first lightening holes are formed in the driving gear at equal intervals around the first shaft hole, two rows of second gear teeth which are meshed with the first gear teeth are circumferentially formed in the outer ring surface of the driven gear, an annular convex part matched with the annular groove is reserved between the two second gear teeth, the height of the annular convex part is flush with that of the second gear teeth, and through holes corresponding to tooth grooves between the second gear teeth are formed in the side surface of the annular convex part, the tooth surfaces of the two first gear teeth and the second gear teeth are respectively sintered with a first wear-resistant layer, the tooth surfaces of the first wear-resistant layers are respectively sintered with a second wear-resistant layer, the center of the driven gear is provided with a second shaft hole, the inner wall of the second shaft hole is provided with a plurality of second key slots, and the driven gear is provided with a plurality of second lightening holes at equal intervals around the second shaft hole.

Preferably, the driving gear and the driven gear are made of nodular cast iron.

Preferably, the inner walls of the first shaft hole, the first key groove, the second shaft hole and the second key groove are all sintered with high-strength wear-resistant layers, and the high-strength wear-resistant layers are made of high-chromium cast iron.

Preferably, two of the second gear teeth are integrally connected with the annular convex part therebetween.

Preferably, the material of the first wear-resistant layer is low-carbon alloy carburized steel.

Preferably, the material of the second wear-resistant layer is a chromium carbide composite material.

Compared with the prior art, the utility model has the beneficial effects that:

1. the annular convex part on the driven gear rotates in the annular groove on the driving gear in a matched manner, so that the rotation of the gear is limited, and the gear is prevented from being deviated or dislocated in the rotation process, and the gears are more firmly meshed;

2. the second gear teeth are integrally connected with the annular convex parts between the second gear teeth, so that the connecting area of one side of the second gear teeth and the annular convex parts is increased, and the breakage of the gear during rotation is reduced;

3. the through hole on the driven gear plays effectual radiating effect to the gear when rotating, also can take the gear oil in the reduction box to be favorable to lubricated the gear simultaneously, reduces the wearing and tearing and the destruction of transmission in-process to the gear to the life of gear has been improved.

Drawings

FIG. 1 is a schematic view of the engagement structure of the driving gear and the driven gear of the present invention;

FIG. 2 is a schematic top view of the driving gear and the driven gear of the present invention;

FIG. 3 is a schematic structural view of the external tooth and spline material of the present invention.

In the figure: 1. a driving gear; 2. a driven gear; 3. an annular groove; 4. a first gear tooth; 5. a first shaft hole; 6. a first keyway; 7. a first lightening hole; 8. a second gear tooth; 9. an annular protrusion; 10. a tooth socket; 11. a through hole; 12. a first wear resistant layer; 13. a second wear layer; 14. a second shaft hole; 15. a second keyway; 16. and a second lightening hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-3, the present invention provides a technical solution: a speed reducer gear with high wear resistance strength comprises a driving gear 1 and a driven gear 2, wherein an annular groove 3 is circumferentially formed in the middle of the outer annular surface of the driving gear 1, first gear teeth 4 which are identical in size and correspond to each other one by one are formed in two adjacent sides of the annular groove 3 on the driving gear 1, a first shaft hole 5 is formed in the center of the driving gear 1, a plurality of first key slots 6 are formed in the inner wall of the first shaft hole 5, a plurality of first lightening holes 7 are formed in the driving gear 1 around the first shaft hole 5 at equal intervals, two rows of second gear teeth 8 which are mutually meshed with the first gear teeth 4 are circumferentially formed in the outer annular surface of the driven gear 2, annular convex portions 9 matched with the annular groove 3 are reserved between the two second gear teeth 8, and the height of each annular convex portion 9 is flush with the height of each second gear tooth 8, the side surface of the annular convex part 9 is provided with through holes 11 corresponding to tooth grooves 10 between the second gear teeth 8, the tooth surfaces of the two first gear teeth 4 and the second gear teeth 8 are respectively sintered with a first wear-resistant layer 12, the tooth surfaces of the first wear-resistant layers 12 are respectively sintered with a second wear-resistant layer 13, the center of the driven gear 2 is provided with a second shaft hole 14, the inner wall of the second shaft hole 14 is provided with a plurality of second key grooves 15, and the driven gear 2 is provided with a plurality of second lightening holes 16 at equal intervals around the second shaft hole 14.

In the embodiment, the annular convex part 9 on the driven gear 2 is matched with and rotates in the annular groove 3 on the driving gear 1, so that the rotation of the gear is limited, and the gear is prevented from being deviated or dislocated in the rotation process, so that the gears are more firmly meshed; the second gear teeth 8 are integrally connected with the annular convex parts 9 between the second gear teeth, so that the connecting area between one side of the second gear teeth 8 and the annular convex parts 9 is increased, and the breakage of the gear during rotation is reduced; when the driven gear 2 rotates, the through holes 11 on the driven gear play an effective heat dissipation role on the gear, and simultaneously, gear oil in the speed reducer case is brought to be beneficial to lubricating the gear, so that the abrasion and the damage to the gear in the transmission process are reduced, and the service life of the gear is prolonged.

Specifically, the driving gear 1 and the driven gear 2 are made of nodular cast iron.

In the present embodiment, the drive gear 1 and the drive gear 2 are made stronger in toughness and plasticity.

Specifically, the inner walls of the first shaft hole 5, the first key groove 6, the second shaft hole 14 and the second key groove 15 are all sintered with high-strength wear-resistant layers made of high-chromium cast iron.

In the present embodiment, the strength and wear resistance of the first shaft hole 5, the first key groove 6, the second shaft hole 14, and the second key groove 15 are increased.

Specifically, one side of each of the two second gear teeth 8 is integrally connected with the annular convex part 9 therebetween.

In this embodiment, the engagement of the second gear teeth 8 is made firm and the breakage of the gear is reduced.

Specifically, the material of the first wear-resistant layer 12 is low-carbon alloy carburizing steel.

In this embodiment, the wear resistance and strength of the first gear teeth 4 and the second gear teeth 8 are improved.

Specifically, the second wear-resistant layer 13 is made of a chromium carbide composite material.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: when the gear is used, the driving gear 1 and the driven gear 2 are fixed on the rotating shaft, the driving gear 1 drives the driven gear 2 to rotate in an engaged manner, and meanwhile, the annular convex part 9 on the driven gear 2 rotates in the annular groove 3 on the driving gear 1 in a matched manner, so that the rotation of the gears is limited, the gears are prevented from being deviated or dislocated in the rotating process, and the gears are engaged more firmly; meanwhile, the second gear teeth 8 are integrally connected with the annular convex part 9 between the second gear teeth, so that the connecting area of one side of the second gear teeth and the annular convex part is increased, and the breakage of the gear during rotation is reduced; and the through hole 11 on the driven gear 2 plays effectual radiating effect to the gear when rotating, also can take the gear oil in the speed reducer case to be favorable to lubricated to the gear simultaneously, reduces the wearing and tearing and the destruction to the gear among the transmission process to the life of gear has been improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A speed reducer gear with high wear resistance strength comprises a driving gear (1) and a driven gear (2), and is characterized in that an annular groove (3) is formed in the middle of the outer ring surface of the driving gear (1) in the circumferential direction, first gear teeth (4) which are identical in size and correspond to each other one by one are formed in the two adjacent sides of the annular groove (3) on the driving gear (1), a first shaft hole (5) is formed in the center of the driving gear (1), a plurality of first key slots (6) are formed in the inner wall of the first shaft hole (5), a plurality of first lightening holes (7) are formed in the driving gear (1) in a manner of surrounding the first shaft hole (5) at equal intervals, two rows of second gear teeth (8) which are meshed with the first gear teeth (4) are formed in the circumferential direction on the outer ring surface of the driven gear (2), and annular convex portions (9) matched with the annular groove (3) are reserved between the two second gear teeth (8), the height of annular convex part (9) with the height parallel and level of second teeth of a cogwheel (8), set up on the side of annular convex part (9) with through-hole (11) corresponding with tooth's socket (10) between the second teeth of a cogwheel (8), two all sintered first wearing layer (12) on the flank of first teeth of a cogwheel (4) and second teeth of a cogwheel (8), all sintered second wearing layer (13) on the flank of first wearing layer (12), the center of driven gear (2) is equipped with second shaft hole (14), just a plurality of second keyway (15) have been seted up to the inner wall of second shaft hole (14), driven gear (2) around a plurality of second lightening hole (16) have been seted up to second shaft hole (14) equidistance interval.

2. The reducer gear with high wear resistance according to claim 1, wherein the driving gear (1) and the driven gear (2) are made of nodular cast iron.

3. The reducer gear with high wear resistance according to claim 1, wherein the inner walls of the first shaft hole (5), the first key groove (6), the second shaft hole (14) and the second key groove (15) are all sintered with high-strength wear-resistant layers, and the high-strength wear-resistant layers are made of high-chromium cast iron.

4. A reducer gear with high wear resistance according to claim 1, wherein the two second gear teeth (8) are integrally connected with the annular convex portion (9) therebetween.

5. The reducer gear with high wear resistance according to claim 1, wherein the material of the first wear-resistant layer (12) is low-carbon alloy carburizing steel.

6. The reducer gear with high wear resistance according to claim 1, wherein the second wear-resistant layer (13) is made of a chromium carbide composite material.