CN214036797U

CN214036797U - Hypoid gear speed reducer

Info

Publication number: CN214036797U
Application number: CN202023100136.XU
Authority: CN
Inventors: 蒋小海; 江建斌
Original assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Current assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-08-24
Anticipated expiration: 2030-12-21
Also published as: WO2022134679A1

Abstract

The utility model provides a hypoid gear reducer belongs to mechanical technical field. The hypoid gear reducer comprises a box body, and an input shaft, an output shaft and a transmission shaft which are arranged in the box body, wherein the transmission shaft is vertical to the input shaft, the left end of the input shaft is connected with the transmission shaft through a hypoid gear pair, a mounting through hole is formed in the box body, the right end of the input shaft is positioned in the mounting through hole, the input shaft is supported in the mounting through hole through two bearings I, the left end of the input shaft is provided with a shaft shoulder, the right end of the input shaft is fixed with a ring-shaped limiting part I, and two opposite ends of the inner rings of the two bearings I are respectively tightly pressed on the shaft shoulder and the limiting part I; a spline sleeve is further arranged in the mounting through hole, the left end of the spline sleeve is sleeved on the right end of the input shaft, and the spline sleeve is in spline fit connection with the input shaft; the right end of the input shaft is further sleeved with a rubber cylinder and a second annular limiting part, the second limiting part is fixedly connected with the input shaft, and two ends of the rubber cylinder are respectively tightly pressed on the second limiting part and the spline sleeve. The hypoid gear reducer has stable transmission.

Description

Hypoid gear speed reducer

Technical Field

The utility model belongs to the technical field of machinery, a gear reducer, especially a hypoid gear reducer is related to.

Background

The speed reducer is a relatively precise machine, is an independent transmission part for reducing the rotating speed, transmitting power and increasing torque, and is widely applied to modern machines.

The existing speed reducer is like a hypoid gear speed reducer (application number: 201320705292.X) disclosed by Chinese patent library, and comprises a box body, wherein an output shaft, an input bevel gear, an output bevel gear shaft and an output bevel gear are arranged in the box body, the input bevel gear shaft and the input bevel gear are meshed with each other, the output bevel gear shaft and the output bevel gear are meshed with each other, one end of the input bevel gear shaft penetrates out of the box body to form a power input end, an input flange is arranged on the outer side wall of one side of the box body close to the power input end, an input shaft sleeve is sleeved on the power input end, a hypoid gear shaft is further arranged in the box body, the input bevel gear is sleeved on one side close to the input bevel gear shaft in the hypoid gear shaft, the output bevel gear shaft is sleeved with a hypoid gear, one end of the hypoid gear shaft close to the hypoid gear is provided with hypoid gear teeth which are meshed with the hypoid gear.

In the speed reducer, the input shaft sleeve is clamped between the input shaft sleeve and the input bevel gear shaft, and when the motor runs at a high speed and shakes, the shake is transmitted to the input bevel gear shaft through the input shaft sleeve, so that the running stability of the whole speed reducer is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a hypoid gear reducer, the technical problem of solution is how to improve the operation stationarity.

The purpose of the utility model can be realized by the following technical proposal: the hypoid gear reducer comprises a box body and an input shaft horizontally arranged in the box body, an output shaft and a transmission shaft, wherein the transmission shaft is positioned between the input shaft and the output shaft, the transmission shaft is parallel to the output shaft and is connected with the output shaft through a gear pair, the transmission shaft is vertical to the input shaft, the left end of the input shaft is connected with the transmission shaft through the hypoid gear pair, an installation through hole is formed in the box body, the right end of the input shaft is positioned in the installation through hole, the input shaft is supported in the installation through hole through two bearings I, and the left end of the input shaft is provided with a shaft shoulder; a spline sleeve coaxial with the input shaft is further arranged in the mounting through hole, the left end of the spline sleeve is sleeved on the right end of the input shaft, and the spline sleeve is in spline fit connection with the input shaft; the right end of the input shaft is further sleeved with a rubber cylinder and a second annular limiting part, the spline sleeve, the rubber cylinder, the second limiting part and the first limiting part are sequentially distributed from right to left, the second limiting part is fixedly connected with the input shaft, and two ends of the rubber cylinder are respectively tightly pressed on the second limiting part and the spline sleeve.

During installation, a main shaft of a motor fixedly connected with the box body is inserted into the right end of the spline housing, a step is arranged on the main shaft of the motor, and the bottom wall of the step is tightly pressed on the right end face of the spline housing, so that the spline housing is clamped and positioned between the bottom wall of the step and the rubber cylinder; the motor spindle and the spline housing are connected in a spline fit manner.

The spline sleeve pushes the rubber sleeve to be tightly pressed on the second limiting piece so as to apply an additional axial acting force on the input shaft to further position the input shaft in the axial direction, so that the input shaft is effectively prevented from axially shaking in the transmission process, and the whole transmission process is stable; meanwhile, the rubber cylinder can buffer radial shaking in the transmission process by utilizing the elasticity of the rubber cylinder, so that the transmission stability is further improved.

In the hypoid gear reducer, the rubber cylinder comprises a cylindrical body and at least two convex rings integrally formed on the outer side wall of the body, and the convex rings are distributed at intervals along the axial direction of the body so as to improve the compression performance of the rubber cylinder, so that the rubber cylinder can be tightly attached to the second limiting part, and the axial stress of the input shaft is more obvious.

In the hypoid gear reducer, the outer side wall of the input shaft is provided with a second annular clamp spring groove, and the second limiting part is a second clamp spring fixed in the second clamp spring groove.

As another scheme, in the hypoid gear reducer, the second limiting member is a second limiting ring, and the second limiting ring is fixedly connected with the input shaft in a welding manner.

In foretell hypoid gear reducer, the inner wall of installation through-hole has to be annular convex positioning seat, and the positioning seat is between two bearings one, and the relative both ends of two bearing one outer lanes are sticis respectively in the positioning seat both sides to further improve the spacing effect of input shaft axial, when improving transmission stationarity, the structure is also comparatively simple.

In the hypoid gear reducer, the input shaft is sleeved with two oil seals, the outer walls of the two oil seals are fixedly connected with the inner wall of the mounting through hole in a sealing manner, the inner walls of the two oil seals are abutted against the side wall of the input shaft to form a seal, one of the oil seals is located between the first limiting part and the second limiting part, and the other oil seal is located on the inner side of the positioning seat. Set up twice oil blanket in the input shaft axial, can effectively strengthen the sealed effect that forms between input shaft and the installation through-hole, effectively avoid impurity such as dust to enter into the box.

In the hypoid gear reducer, the first limiting part is a gasket sleeved outside the input shaft and an annular positioning part fixedly connected with the input shaft, and two end faces of the gasket are respectively pressed on the annular positioning part and an inner ring of the first bearing on the right side. The first limiting part is a combined piece formed by a gasket and the first annular positioning part, so that the thickness of the gasket can be changed to adapt to working conditions with different distances between the first annular positioning part and the first right-side bearing due to machining or assembly errors, and the input shaft is enabled to be axially limited under the matching of the shaft shoulder and the first limiting part all the time, so that the transmission stability is ensured.

In the hypoid gear reducer, the outer side wall of the input shaft is provided with a first annular clamp spring groove, and the first limiting part is a first clamp spring fixed in the first clamp spring groove.

As another scheme, in the hypoid gear reducer, the first limit part is a first limit ring, and the first limit ring is fixedly connected with the input shaft in a welding manner.

Compared with the prior art, the hypoid gear reducer has the following advantages:

1. during the installation, motor spindle step diapire sticis on spline housing right-hand member face, makes spline housing promote the rubber sleeve sticiss on locating part two to apply an extra axial effort on the input shaft, with at the epaxial further positioning input shaft, effectively avoid the input shaft to appear the axial at the transmission in-process and rock, make whole transmission process comparatively steady.

2. The rubber cylinder can utilize the elasticity of the rubber cylinder to buffer radial shaking in the transmission process so as to further improve the transmission stability.

3. The first limiting part is a combined piece formed by a gasket and the first annular positioning part, so that the thickness of the gasket can be changed to adapt to working conditions with different distances between the first annular positioning part and the first right-side bearing due to machining or assembly errors, and the input shaft is enabled to be axially limited under the matching of the shaft shoulder and the first limiting part all the time, so that the transmission stability is ensured.

Drawings

Fig. 1 is a schematic sectional structure view of a hypoid gear reducer.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is a schematic sectional structure view of the hypoid gear reducer in another direction.

In the figure, 1, a box body; 1a, installing a through hole; 1a1, positioning seat; 2. an input shaft; 2a, an active hypoid gear; 3. an output shaft; 4. a drive shaft; 5. a driven hypoid gear; 6. a first bearing; 7. a first limiting part; 7a, a gasket; 7b, an annular positioning piece; 8. a spline housing; 9. a rubber cylinder; 9a, a body; 9b, a convex ring; 10. a second limiting part; 11. and (7) oil sealing.

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 and 3, the hypoid gear reducer includes a housing 1, and an input shaft 2, an output shaft 3, and a transmission shaft 4 horizontally provided in the housing 1.

Wherein, both ends of the output shaft 3 and both ends of the transmission shaft 4 are rotatably supported in the box body 1 through a second bearing; the transmission shaft 4 is located between the input shaft 2 and the output shaft 3, the transmission shaft 4 is parallel to the output shaft 3 and is connected with the output shaft 3 through a gear pair, in the embodiment, the gear pair is a main gear integrally formed on the transmission shaft 4 and a pinion fixed on the output shaft 3, and the main gear is meshed with the pinion. The box body 1 is internally provided with a mounting through hole 1a, and the axis of the mounting through hole 1a is horizontally arranged. The input shaft 2 is arranged in the mounting through hole 1a and is coaxial with the mounting through hole 1a, the left end of the input shaft 2 extends out of the mounting through hole 1a, the transmission shaft 4 is perpendicular to the input shaft 2, and the left end of the input shaft 2 is connected with the transmission shaft 4 through a hypoid gear pair. In the present embodiment, the hypoid gear pair includes a driving hypoid gear 2a integrally formed at the left end of the input shaft 2 and a driven hypoid gear 5 fixed to the right end of the transmission shaft 4, and the driving hypoid gear 2a pair and the driven hypoid gear 5 pair mesh.

As shown in fig. 1, the input shaft 2 is supported in the mounting through hole 1a through two bearings one 6, at this time, the two bearings one 6 are axially distributed along the input shaft 2, and the inner ring and the outer ring of the bearing one 6 are fixedly connected with the input shaft 2 and the box body 1 respectively. In the present embodiment, it is preferable that the type of the bearing-one 6 is a tapered roller bearing. The inner wall of the installation through hole 1a is provided with a positioning seat 1a1 which protrudes annularly, the positioning seat 1a1 is coaxial with the installation through hole 1a, and the positioning seat 1a1 and the box body 1 are of an integrated structure. The positioning seat 1a1 is between two bearings 6, and the relative both ends in 6 outer lanes of two bearings are sticis respectively in positioning seat 1a1 both sides, the left end of input shaft 2 has the shaft shoulder, 2 right-hand member covers of input shaft are established and are fixed with and be annular locating part 7, and the both ends that 6 inner rings of two bearings are carried on the back of the body respectively sticis on shaft shoulder and locating part 7, with effective spacing input shaft 2 in the axial, avoid appearing the axial clearance and rock in order to prevent that the axial from appearing in the transmission process, make whole transmission process comparatively smooth-going.

In the present embodiment, it is preferred that,

the specific structure of the first limiting member 7 is as follows: as shown in fig. 1 and fig. 2, the first limiting member 7 is a spacer 7a sleeved outside the input shaft 2 and an annular positioning member 7b fixedly connected to the input shaft 2, and two end faces of the spacer 7a are respectively pressed against the annular positioning member 7b and an inner ring of the first bearing 6 on the right side. The first limiting part 7 is a combined piece formed by a gasket 7a and an annular positioning part 7b, so that the working conditions of different distances between the annular positioning part 7b and the right bearing 6 caused by machining or assembly errors can be adapted by changing the thickness of the gasket 7a, and the input shaft 2 is axially limited under the matching of a shaft shoulder and the first limiting part 7 all the time, so that the transmission stability is ensured. Preferably, the outer side wall of the input shaft 2 is provided with a first annular clamp spring groove, and the first limiting part 7 is a first clamp spring fixed in the first clamp spring groove. Naturally, it is also possible to adopt a mode that the first limit part 7 is the first limit ring which is fixedly connected with the input shaft 2 in a welding mode.

As shown in fig. 1 and 2, a spline housing 8 coaxial with the input shaft 2 is further arranged in the mounting through hole 1a, the left end of the spline housing 8 is sleeved on the right end of the input shaft 2, and the spline housing 8 is in spline fit connection with the input shaft 2. In practical products, the outer wall of the input shaft 2 is provided with a spline groove matched with the spline housing 8, and after assembly, the distance between the root of the spline groove and a key block in the spline housing 8 is 0.2 mm-0.6 mm, preferably the distance is 0.5 mm. The right end of the input shaft 2 is further sleeved with a rubber cylinder 9 and a second annular limiting part 10, the spline housing 8, the rubber cylinder 9, the second limiting part 10 and the first limiting part 7 are sequentially distributed from right to left, the second limiting part 10 is fixedly connected with the input shaft 2, and two ends of the rubber cylinder 9 are respectively tightly pressed on the second limiting part 10 and the spline housing 8. During installation, a main shaft of a motor fixedly connected with the box body 1 is inserted into the right end of the spline housing 8, a step is arranged on the main shaft of the motor, and the bottom wall of the step is tightly pressed on the right end face of the spline housing 8, so that the spline housing 8 is clamped and positioned between the bottom wall of the step and the rubber cylinder 9; the motor main shaft and the spline housing 8 are connected in a spline fit manner. The spline sleeve 8 pushes the rubber sleeve to be tightly pressed on the second limiting piece 10 so as to apply an additional axial acting force on the input shaft 2 to further position the input shaft 2 in the axial direction, so that the input shaft 2 is effectively prevented from axially shaking in the transmission process, and the whole transmission process is stable; meanwhile, the rubber cylinder 9 can buffer radial shaking in the transmission process by utilizing the elasticity of the rubber cylinder so as to further improve the transmission stability.

Wherein the content of the first and second substances,

the rubber tube 9 has the following structure: the rubber tube 9 comprises a tube-shaped body 9a and convex rings 9b integrally formed on the outer side wall of the body 9a, wherein at least two convex rings 9b are axially distributed at intervals along the body 9a, so that the compression performance of the rubber tube 9 is improved, the rubber tube can be tightly attached to the second limiting part 10, and the axial stress of the input shaft 2 is more obvious. Preferably, the number of the convex rings 9b is 3, and the inner wall of the body 9a is abutted against the side wall of the input shaft 2.

The second position limiting member 10 has the following structure: the outer side wall of the input shaft 2 is provided with a second annular clamp spring groove, and the second limiting part 10 is a second clamp spring fixed in the second clamp spring groove. Naturally, it is also possible to adopt a scheme that the second limiting part 10 is a second limiting ring fixedly connected with the input shaft 2 in a welding manner.

As shown in fig. 1, two oil seals 11 are sleeved on the input shaft 2, outer walls of the two oil seals 11 are fixedly connected with an inner wall of the mounting through hole 1a in a sealing manner, inner walls of the two oil seals 11 are abutted against side walls of the input shaft 2 to form a seal, one of the oil seals 11 is located between the first limiting member 7 and the second limiting member 10, and the other oil seal 11 is located inside the positioning seat 1a 1. Set up twice oil blanket 11 in the input shaft 2 axial, can effectively strengthen the sealed effect that forms between input shaft 2 and the installation through-hole 1a, effectively avoid impurity such as dust to enter into in the box 1.

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.

Claims

1. Hypoid gear reducer, including box (1) and level input shaft (2) of locating in box (1), output shaft (3) and transmission shaft (4), transmission shaft (4) are located between input shaft (2) and output shaft (3), transmission shaft (4) are parallel and both pass through gear pair and connect with output shaft (3), transmission shaft (4) and input shaft (2) are perpendicular, and input shaft (2) left end and transmission shaft (4) pass through hypoid gear pair and connect, the box (1) has installation through-hole (1a), input shaft (2) right-hand member is located installation through-hole (1a), and input shaft (2) supports in installation through-hole (1a) through two bearing one (6), the left end of input shaft (2) has the shaft shoulder, its characterized in that, input shaft (2) right-hand member cover is established and is fixed with and is annular locating part one (7), two opposite ends of the inner rings of the two first bearings (6) are respectively tightly pressed on the shaft shoulder and the first limiting piece (7); a spline sleeve (8) coaxial with the input shaft (2) is further arranged in the mounting through hole (1a), the left end of the spline sleeve (8) is sleeved on the right end of the input shaft (2), and the spline sleeve (8) is in spline fit connection with the input shaft (2); the right end of the input shaft (2) is further sleeved with a rubber cylinder (9) and a second annular limiting part (10), the spline housing (8), the rubber cylinder (9), the second limiting part (10) and the first limiting part (7) are sequentially distributed from right to left, the second limiting part (10) is fixedly connected with the input shaft (2), and two ends of the rubber cylinder (9) are respectively tightly pressed on the second limiting part (10) and the spline housing (8).

2. The hypoid gear reducer according to claim 1, wherein the rubber cylinder (9) comprises a cylindrical body (9a) and at least two protruding rings (9b) integrally formed on the outer side wall of the body (9a), and the protruding rings (9b) are axially spaced along the body (9 a).

3. The hypoid gear reducer according to claim 1, wherein a second annular snap spring groove is formed in the outer side wall of the input shaft (2), and the second limiting member (10) is a second snap spring fixed in the second snap spring groove.

4. The hypoid gear reducer according to claim 1, wherein the inner wall of the mounting through hole (1a) is provided with a positioning seat (1a1) which protrudes annularly, the positioning seat (1a1) is arranged between the two first bearings (6), and two opposite ends of the outer rings of the two first bearings (6) are respectively tightly pressed on two sides of the positioning seat (1a 1).

5. The hypoid gear reducer according to claim 4, wherein the input shaft (2) is sleeved with two oil seals (11), the outer walls of the two oil seals (11) are fixedly connected with the inner wall of the mounting through hole (1a) in a sealing manner, the inner walls of the two oil seals (11) are abutted against the side wall of the input shaft (2) to form a seal, one of the oil seals (11) is located between the first limit piece (7) and the second limit piece (10), and the other oil seal (11) is located inside the positioning seat (1a 1).

6. The hypoid gear reducer according to claim 1, wherein the first limiting member (7) is a gasket (7a) sleeved outside the input shaft (2) and an annular positioning member (7b) fixedly connected with the input shaft (2), and two end faces of the gasket (7a) are respectively pressed against the annular positioning member (7b) and an inner ring of the first bearing (6) on the right side.

7. The hypoid gear reducer according to claim 6, wherein the outer side wall of the input shaft (2) is provided with a first annular snap spring groove, and the first limit member (7) is a first snap spring fixed in the first snap spring groove.