WO2022134679A1

WO2022134679A1 - Hypoid gear reducer

Info

Publication number: WO2022134679A1
Application number: PCT/CN2021/119139
Authority: WO
Inventors: 蒋小海; 江建斌
Original assignee: 浙江三凯机电有限公司
Priority date: 2020-12-21
Filing date: 2021-09-17
Publication date: 2022-06-30
Also published as: CN214036797U

Abstract

A hypoid gear reducer comprising a box body (1), and an input shaft (2), an output shaft (3), and a transmission shaft (4) provided in the box body (1). The transmission shaft (4) is perpendicular to the input shaft (2); the left end of the input shaft (2) and the transmission shaft (4) are connected by means of a hypoid gear pair; a mounting through hole (1a) is formed in the box body (1); the right end of the input shaft (2) is located in the mounting through hole (1a); the input shaft (2) is supported in the mounting through hole (1a) by means of two bearings I (6); the left end of the input shaft (2) is provided with a shaft shoulder; the right end of the input shaft (2) is fixed with an annular limiting member I (7); the two ends of the inner rings of the two bearings I (6) away from each other are tightly pressed on the shaft shoulder and the limiting member I (7); a spline sleeve (8) is further provided 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); the spline sleeve (8) and the input shaft (2) are in spline fit connection; the right end of the input shaft (2) is further sleeved with a rubber cylinder (9) and an annular limiting member II (10); the limiting member II (10) is fixedly connected to the input shaft (2); and the two ends of the rubber cylinder (9) are respectively tightly pressed on the limiting member II (10) and the spline sleeve (8).

Description

Hypoid gear reducer

technical field

The utility model belongs to the technical field of machinery, and relates to a gear reducer, in particular to a hypoid gear reducer.

Background technique

The reducer is a relatively precise machine, an independent transmission component used to reduce the speed, transmit power, and increase the torque. It is widely used in modern machinery.

The existing reducer, such as a hypoid gear reducer disclosed in the Chinese patent library (application number: 201320705292.X), includes a box body, and the box body is provided with an output shaft, an input helical gear shaft, and an input helical gear. , The output helical gear shaft and the output helical gear, the input helical gear shaft and the input helical gear mesh with each other, the output helical gear shaft and the output helical gear mesh with each other, and one end of the input helical gear shaft penetrates out of the box to form power At the input end, an input flange is arranged on the outer side wall of the box body near the power input end, an input shaft sleeve is sleeved on the power input end, and a hypoid gear shaft is also arranged in the box body , the input helical gear is sleeved on the side of the hypoid gear shaft close to the input helical gear shaft, the output helical gear is sleeved on the output shaft, and the output helical gear shaft is sleeved on the A hypoid gear is provided, and one end of the hypoid gear shaft close to the hypoid gear is provided with hypoid double-sided gear teeth that mesh with the hypoid gear.

In the above-mentioned reducer, the input shaft sleeve is hard clamped between the input shaft sleeve and the input helical gear shaft. When the motor runs at high speed, jitter is transmitted to the input helical gear shaft through the input shaft sleeve, affecting the entire deceleration. The running stability of the machine.

technical problem

The purpose of the utility model is to solve the above problems in the existing technology, and propose a hypoid gear reducer, which solves the technical problem of how to improve the running stability.

technical solutions

The purpose of the present utility model can be achieved through the following technical solutions: a hypoid gear reducer, including a casing and an input shaft, an output shaft and a transmission shaft that are horizontally arranged in the casing, and the transmission shaft is located between the input shaft and the output shaft, The transmission shaft is parallel to the output shaft and connected by a gear pair. The transmission shaft is perpendicular to the input shaft, and the left end of the input shaft and the transmission shaft are connected by a hypoid gear pair. There is an installation through hole in the box, and the right end of the input shaft is located in the installation through hole. and the input shaft is supported in the installation through hole through two bearings, the left end of the input shaft has a shaft shoulder, which is characterized in that the right end of the input shaft is sleeved and fixed with a ring-shaped limiting piece, and the two bearings are inside The opposite ends of the ring are pressed on the shaft shoulder and the first stopper respectively; the installation through hole is also provided with a spline sleeve coaxial with the input shaft, the left end of the spline sleeve is sleeved on the right end of the input shaft, and the spline sleeve is placed on the right end of the input shaft. The key sleeve and the input shaft are connected by splines; the right end of the input shaft is also covered with a rubber tube and a second annular limiter. The spline sleeve, the rubber tube, the second limiter and the first limiter are sequentially from right to left The second limiter is fixedly connected with the input shaft, and the two ends of the rubber cylinder are respectively pressed against the second limiter and the spline sleeve.

During installation, the main shaft of the motor fixed with the box is inserted into the right end of the spline sleeve, the motor main shaft has a step, and the bottom wall of the step is pressed against the right end surface of the spline sleeve, so that the spline sleeve is clamped and positioned on the bottom wall of the step and the rubber. between the cylinders; the motor spindle and the spline sleeve are connected by spline fitting.

The spline sleeve pushes the rubber sleeve against the second stopper to exert an additional axial force on the input shaft to further position the input shaft in the axial direction, effectively preventing the input shaft from appearing in the axial direction during the transmission process. The vibration makes the whole transmission process more stable; at the same time, the rubber cylinder can use its own elasticity to buffer the radial vibration in the transmission process, so as to further improve the transmission stability.

In the above-mentioned hypoid gear reducer, the above-mentioned rubber cylinder includes a cylindrical body and a convex ring integrally formed on the outer side wall of the body. Compression performance of the barrel, so that it can be tightly attached. On the second limiter, the axial force of the input shaft is more obvious.

In the above-mentioned hypoid gear reducer, the outer side wall of the input shaft is provided with a second ring-shaped circlip groove, and the second limiting member is a circlip 2 fixed in the second circlip groove.

As another solution, in the above-mentioned hypoid gear reducer, the second limiting member is the second limiting ring, and the second limiting ring is fixedly connected with the input shaft by welding.

In the above-mentioned hypoid gear reducer, the inner wall of the mounting through hole has a ring-shaped protruding positioning seat, the positioning seat is located between the two bearings, and the opposite ends of the outer rings of the two bearings are respectively pressed against the positioning seat. Both sides of the seat to further improve the effect of the axial limit of the input shaft, while improving the transmission stability, the structure is also relatively simple.

In the above-mentioned hypoid gear reducer, two oil seals are sleeved on the input shaft, the outer walls of the two oil seals are both sealed and fixed with the inner wall of the installation through hole, and the inner walls of the two oil seals are abutted against the side wall of the input shaft to form a seal, and one of the oil seals is in Between the first limit piece and the second limit piece, the other oil seal is inside the positioning seat. Two oil seals are arranged on the axial direction of the input shaft, which can effectively strengthen the sealing effect formed between the input shaft and the installation through hole, and effectively prevent impurities such as dust from entering the box.

In the above-mentioned hypoid gear reducer, the first limiting member is a gasket sleeved outside the input shaft and an annular positioning member fixedly connected with the input shaft. The two end faces of the gasket are respectively pressed against the annular positioning member and on the right side. on the inner ring of bearing one. The limiter 1 is a combination formed by a gasket and an annular positioning member, so that the thickness of the gasket can be changed to adapt to the working conditions of different distances between the annular positioning member and the right bearing 1 due to processing or assembly errors. The input shaft is always axially limited under the cooperation of the shaft shoulder and the limiter to ensure the smoothness of the transmission.

In the above-mentioned hypoid gear reducer, the outer side wall of the input shaft is provided with a ring-shaped circlip groove 1, and the limiting member 1 is a circlip 1 fixed in the circlip groove 1.

As another solution, in the above hypoid gear reducer, the first limiting member is a first limiting ring, and the first limiting ring is fixedly connected to the input shaft by welding.

beneficial effect

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

1. During installation, the bottom wall of the motor shaft step is pressed against the right end face of the spline sleeve, so that the spline sleeve pushes the rubber sleeve tightly against the second stopper, so as to exert an additional axial force on the input shaft, In order to further position the input shaft in the axial direction, the axial shaking of the input shaft during the transmission process is effectively avoided, so that the whole transmission process is relatively stable.

2. The rubber cylinder can use its own elasticity to buffer the radial shaking during the transmission process, so as to further improve the transmission stability.

3. The limiter one is a combination formed by a gasket and an annular positioning member, so that the thickness of the gasket can be changed to adapt to the different distances between the annular positioning member and the right bearing one due to processing or assembly errors. In this case, the input shaft is always axially limited under the cooperation of the shaft shoulder and the limiter to ensure the smoothness of the transmission.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of hypoid gear reducer;

Fig. 2 is the enlarged structural representation of A place in Fig. 1;

FIG. 3 is a schematic cross-sectional structure diagram of the hypoid gear reducer in another direction.

In the figure, 1, the box body; 1a, the installation through hole; 1a1, the positioning seat; 2, the input shaft; 2a, the driving hypoid gear; 3, the output shaft; 4, the transmission shaft; 5, the driven hypoid gear ; 6, bearing one; 7, limit piece one; 7a, gasket; 7b, annular positioning piece; 8, spline sleeve; 9, rubber cylinder; 9a, body; 9b, convex ring; 10, limit piece two ; 11. Oil seal.

BEST MODE FOR CARRYING OUT THE INVENTION

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

As shown in FIG. 1 and FIG. 3 , the hypoid gear reducer includes a casing 1 and an input shaft 2 , an output shaft 3 and a transmission shaft 4 which are horizontally arranged in the casing 1 .

Among them, the two ends of the output shaft 3 and the two ends of the transmission shaft 4 are both rotatably supported in the box body 1 through the bearing two; the transmission shaft 4 is located between the input shaft 2 and the output shaft 3, and the transmission shaft 4 is parallel to the output shaft 3 and both Connected by a gear pair, in this embodiment, the gear pair is a main gear integrally formed on the transmission shaft 4 and an auxiliary gear fixed on the output shaft 3, and the main gear and the auxiliary gear mesh. An installation through hole 1a is formed in the box body 1, and the axis of the installation through hole 1a is arranged horizontally. The input shaft 2 is arranged in the installation through hole 1a and the two are coaxial, the left end of the input shaft 2 extends out of the installation through hole 1a, the transmission shaft 4 is perpendicular to the input shaft 2, and the left end of the input shaft 2 and the transmission shaft 4 pass through the hypoid gear. Secondary connection. In this embodiment, the hypoid gear pair includes a driving hypoid gear 2a integrally formed on the left end of the input shaft 2 and a driven hypoid gear 5 fixed on the right end of the transmission shaft 4, and the driving hypoid gear 2a The pair meshes with 5 pairs of driven hypoid gears.

As shown in FIG. 1, the input shaft 2 is supported in the installation through hole 1a by two bearings-6. At this time, the two bearings-6 are axially distributed along the input shaft 2, and the inner and outer rings of the bearing-6 are respectively connected with the input shaft. 2 and the box 1 are fixed. In this embodiment, the preferred type of bearing one 6 is a tapered roller bearing. The inner wall of the installation through hole 1a has a ring-shaped protruding positioning seat 1a1, the positioning seat 1a1 and the installation through hole 1a are coaxial, and the positioning seat 1a1 and the box body 1 have an integral structure. The positioning seat 1a1 is between the two bearings 1 6, and the opposite ends of the outer rings of the two bearings 1 6 are respectively pressed on both sides of the positioning seat 1a1, the left end of the input shaft 2 has a shoulder, and the right end of the input shaft 2 is sleeved and fixed. The ring-shaped limiting member 17, and the opposite ends of the inner rings of the two bearings 16 are pressed against the shaft shoulder and the limiting member 17 respectively, so as to effectively limit the input shaft 2 in the axial direction and avoid Axial clearance occurs to prevent axial shaking during transmission, so that the entire transmission process is smoother.

In this embodiment,

The specific structure of the limiting member one 7 is as follows: as shown in Figure 1 and Figure 2, the limiting member one 7 is a gasket 7a sleeved outside the input shaft 2 and an annular positioning member 7b fixedly connected with the input shaft 2. The gasket The two end faces of 7a are respectively pressed against the annular positioning member 7b and the inner ring of the bearing one 6 on the right side. The limiter one 7 adopts the combination formed by the gasket 7a and the annular positioning member 7b, so that the thickness of the gasket 7a can be changed to fit the gap between the annular positioning member 7b and the right bearing one 6 due to processing or assembly errors. Under the working conditions of different distances, the input shaft 2 is always axially limited under the cooperation of the shaft shoulder and the limiter-7 to ensure the smoothness of the transmission. Preferably, the outer side wall of the input shaft 2 is provided with a ring-shaped circlip groove 1, and the limiting member 1 is a circlip 1 fixed in the circlip groove 1. Naturally, it is also possible to adopt the method of "the limiting member 1 7 is the limiting ring 1, and the limiting ring 1 is fixedly connected with the input shaft 2 by welding".

As shown in Figures 1 and 2, the installation through hole 1a is also provided with a spline sleeve 8 coaxial with the input shaft 2, the left end of the spline sleeve 8 is sleeved on the right end of the input shaft 2, and the spline sleeve 8 and the input shaft 2 spline mating connections. In the actual product, the outer wall of the input shaft 2 is provided with a spline groove that cooperates with the spline sleeve 8. After assembly, the distance between the root of the spline groove and the key block in the spline sleeve 8 is 0.2mm to 0.6mm. A distance is 0.5mm. The right end of the input shaft 2 is also covered with a rubber tube 9 and a ring-shaped limiter 2 10. The spline sleeve 8, the rubber tube 9, the limiter 2 10 and the limiter 17 are distributed in order from right to left, and the limit The second position member 10 is fixedly connected with the input shaft 2 , and the two ends of the rubber cylinder 9 are respectively pressed against the second position member 10 and the spline sleeve 8 . During installation, the main shaft of the motor fixed with the box 1 is inserted into the right end of the spline sleeve 8, the motor main shaft has a step, and the bottom wall of the step is pressed against the right end surface of the spline sleeve 8, so that the spline sleeve 8 is clamped and positioned on the step. Between the bottom wall and the rubber cylinder 9; the motor spindle and the spline sleeve 8 are connected by spline fitting. The spline sleeve 8 pushes the rubber sleeve tightly against the second stopper 10 to exert an additional axial force on the input shaft 2 to further position the input shaft 2 in the axial direction, effectively preventing the input shaft 2 from driving Axial shaking occurs during the process, so that the entire transmission process is relatively stable; at the same time, the rubber cylinder 9 can use its own elasticity to buffer the radial shaking during the transmission process, so as to further improve the transmission stability.

in,

The structure of the rubber cylinder 9 is as follows: the rubber cylinder 9 includes a cylindrical body 9a and a convex ring 9b integrally formed on the outer side wall of the body 9a. 9. The compression performance enables it to be closely attached to the limiting member 2 10, so that the axial force of the input shaft 2 is more obvious. Preferably, the number of the convex rings 9b is three, and the inner wall of the main body 9a is in contact with the side wall of the input shaft 2 .

The structure of the second limiting member 10 is as follows: the outer side wall of the input shaft 2 is provided with a second ring-shaped circlip groove, and the second limiting member 10 is a second circlip fixed in the second circlip groove. Naturally, it is also possible to adopt the solution of "the second limiter 10 is the second limiter ring, and the second limiter ring is fixedly connected with the input shaft 2 by welding".

As shown in FIG. 1 , two oil seals 11 are sleeved on the input shaft 2 , the outer walls of the two oil seals 11 are sealed and connected with the inner wall of the installation through hole 1a , and the inner walls of the two oil seals 11 are abutted against the side wall of the input shaft 2 to form a seal, and 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 inside the positioning seat 1a1. Two oil seals 11 are arranged in the axial direction of the input shaft 2, which can effectively strengthen the sealing effect formed between the input shaft 2 and the installation through hole 1a, and effectively prevent impurities such as dust from entering the casing 1.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from the spirit of the present invention or go beyond the appended claims the defined range.

Claims

A hypoid gear reducer, comprising a casing (1), an input shaft (2), an output shaft (3) and a transmission shaft (4) horizontally arranged in the casing (1), the transmission shaft (4) being located on the input shaft Between (2) and the output shaft (3), the transmission shaft (4) is parallel to the output shaft (3) and the two are connected by a gear pair, the transmission shaft (4) and the input shaft (2) are perpendicular, and the input shaft (2) ) and the drive shaft (4) are connected through a hypoid gear pair, the box (1) has a mounting through hole (1a), the right end of the input shaft (2) is located in the mounting through hole (1a), and the input shaft (2) ) is supported in the installation through hole (1a) through two bearings (6), and the left end of the input shaft (2) has a shaft shoulder, which is characterized in that the right end of the input shaft (2) is sleeved and fixed with a ring-shaped limiter Part one (7), and the opposite ends of the inner rings of the two bearings (6) are pressed against the shaft shoulder and the limiting part one (7) respectively; the installation through hole (1a) is also provided with the input shaft. (2) Coaxial spline sleeve (8), the left end of the spline sleeve (8) is sleeved on the right end of the input shaft (2), and the spline sleeve (8) and the input shaft (2) are connected by splines; the input shaft (2) The right end is also covered with a rubber tube (9) and a ring-shaped limiter two (10), a spline sleeve (8), a rubber tube (9), a limiter (10) and a limiter One (7) is distributed in sequence from right to left, the second (10) limiter is fixedly connected with the input shaft (2), and both ends of the rubber cylinder (9) are pressed against the second (10) of the limiter and the spline sleeve respectively. (8) on.
The hypoid gear reducer according to claim 1, wherein the rubber cylinder (9) comprises a cylindrical body (9a) and a convex ring (9b) integrally formed on the outer side wall of the body (9a). ), there are at least two convex rings (9b) and are spaced apart along the axial direction of the body (9a).
The hypoid gear reducer according to claim 1, characterized in that the outer side wall of the input shaft (2) is provided with a second ring-shaped circlip groove, and the second limiting member (10) is fixed on the circlip Circlip two in slot two.
The hypoid gear reducer according to claim 1, characterized in that, the inner wall of the installation through hole (1a) has a ring-shaped protruding positioning seat (1a1), and the positioning seat (1a1) is located between the two bearings one (6). ), and the opposite ends of the outer rings of the two bearings (6) are pressed against both sides of the positioning seat (1a1).
The hypoid gear reducer according to claim 4, characterized in that two oil seals (11) are sleeved on the input shaft (2), and the outer walls of the two oil seals (11) are sealed and fixed to the inner wall of the installation through hole (1a). , the inner walls of the two oil seals (11) are in contact with the side wall of the input shaft (2) to form a seal, one oil seal (11) is located between the first limiter (7) and the second limiter (10), and the other oil seal ( 11) Inside the positioning seat (1a1).
The hypoid gear reducer according to claim 1, characterized in that the first stopper (7) is a gasket (7a) sleeved on the outside of the input shaft (2) and a gasket (7a) fixedly connected with the input shaft (2). The annular positioning member (7b), the two end faces of the gasket (7a) are respectively pressed against the annular positioning member (7b) and the inner ring of the bearing one (6) on the right side.
The hypoid gear reducer according to claim 6, characterized in that a ring-shaped circlip groove 1 is provided on the outer side wall of the input shaft (2), and the first stopper (7) is fixed on the circlip Circlip 1 in slot 1.