CN214036798U - Three-level hypoid gear speed reducer - Google Patents
Three-level hypoid gear speed reducer Download PDFInfo
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- CN214036798U CN214036798U CN202023102294.9U CN202023102294U CN214036798U CN 214036798 U CN214036798 U CN 214036798U CN 202023102294 U CN202023102294 U CN 202023102294U CN 214036798 U CN214036798 U CN 214036798U
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Abstract
The utility model provides a tertiary hypoid gear reducer belongs to mechanical technical field. The three-stage hypoid gear speed reducer comprises a box body and an input flange arranged outside the box body, wherein an output shaft, a first transmission shaft and a second transmission shaft are arranged in the box body, an input shaft is arranged in the input flange, the input shaft is parallel to the first transmission shaft, the left end of the input shaft is connected with the first transmission shaft through a first gear pair, the output shaft is parallel to the second transmission shaft, the output shaft and the second transmission shaft are connected through a second gear pair, the first transmission shaft is perpendicular to the second transmission shaft, the first transmission shaft and the second transmission shaft are connected through a hypoid gear pair, a spline housing coaxial with the input shaft is further arranged in the input flange, the left end of the spline housing is sleeved on the right end of the input shaft, and the spline housing is in spline fit connection with the input shaft; the input shaft is further sleeved with a rubber cylinder and an annular limiting part, the spline sleeve, the rubber cylinder and the limiting part are sequentially distributed from the right side to the left side, the limiting part is fixedly connected with the input shaft, and two ends of the rubber cylinder are respectively tightly pressed on the limiting part and the spline sleeve. The utility model discloses operate steadily.
Description
Technical Field
The utility model belongs to the technical field of machinery, a gear reducer, especially a tertiary 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 tertiary hypoid gear reducer that operation stationarity is high.
The purpose of the utility model can be realized by the following technical proposal: a three-stage hypoid gear reducer comprises a box body and an input flange arranged outside the box body, wherein the input flange is communicated with an inner cavity of the box body, an output shaft, a first transmission shaft and a second transmission shaft are horizontally arranged in the box body, an input shaft is horizontally arranged in the input flange, the input shaft is parallel to the first transmission shaft, the left end of the input shaft is connected with the first transmission shaft through a first gear pair, the output shaft is parallel to the second transmission shaft, the output shaft and the second transmission shaft are connected through a second gear pair, the first transmission shaft and the second transmission shaft are perpendicular to each other, and the first transmission shaft and the second transmission shaft are connected through a hypoid gear pair; the input shaft is further sleeved with a rubber cylinder and an annular limiting part, the spline sleeve, the rubber cylinder and the limiting part are sequentially distributed from the right side to the left side, the limiting part is fixedly connected with the input shaft, and two ends of the rubber cylinder are respectively tightly pressed on the limiting part and the spline sleeve.
During installation, a main shaft of a motor fixedly connected with the input flange 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.
After the speed reducer is assembled with the motor, the spline sleeve is clamped and positioned between the rubber cylinder and the motor spindle, so that the vibration transmitted by the motor spindle can be buffered by utilizing the elasticity of the rubber cylinder, the vibration is effectively reduced and transmitted to the input shaft, and the whole transmission is ensured to be stably carried out.
In foretell tertiary hypoid gear reducer, have the round spline piece in the spline groove left end, be equipped with the spline groove that matches with the spline piece on the input shaft right-hand member lateral wall, spline groove and spline piece quantity is the same and position one-to-one, and the spline groove left end is sealed, and the distance between spline piece and the spline groove left end face is 0.2mm ~ 0.6 mm. By adopting the design, on the premise of not influencing axial limiting of the spline housing, the axial contact between the spline housing and the input shaft is reduced, so that the amount of the dithering transmission to the input shaft is further reduced by increasing the buffering force of the rubber cylinder, and the purpose of improving the transmission stability is further realized.
In the above three-stage hypoid gear reducer, the rubber cylinder includes a cylindrical body and at least two convex rings integrally formed on the outer side wall of the body, and the at least two convex rings are axially distributed at intervals along the body to improve the compression performance of the rubber cylinder, so that the rubber cylinder can be tightly attached to the limiting part, and the axial stress of the input shaft is more obvious.
In the three-stage hypoid gear reducer, the outer side wall of the input shaft is provided with a first annular clamp spring groove, and the limiting part is a first clamp spring fixed in the first clamp spring groove.
As another scheme, in the above three-stage hypoid gear reducer, the limiting member is a limiting ring, and the limiting ring is fixedly connected with the input shaft by a welding method.
In the three-stage hypoid gear reducer, the first transmission shaft is rotatably connected with the box body through two first bearings, the inner wall of the box body is provided with an annular convex positioning seat, the positioning seat is arranged between the two first bearings, and two opposite ends of the outer rings of the two first bearings are respectively tightly pressed on two sides of the positioning seat; the left end of the first transmission shaft is provided with a shaft shoulder, the right end of the first transmission shaft is sleeved with and fixed with an annular positioning piece, and two ends, opposite to each other, of the inner rings of the two first bearings are respectively tightly pressed on the shaft shoulder and the positioning piece so as to stabilize the first transmission shaft in an axial limiting mode and further ensure transmission stability.
In the three-stage hypoid gear reducer, the positioning element is a gasket sleeved outside the first transmission shaft and a ring-shaped element fixedly connected with the first transmission shaft, and two end faces of the gasket are respectively pressed on the ring-shaped element and an inner ring of the first bearing on the right side. The positioning piece adopts a combination piece formed by the gasket and the annular piece, so that the thickness of the gasket can be changed to adapt to working conditions with different distances between the annular piece and the right first bearing caused by machining or assembly errors, and the first transmission shaft is axially limited under the matching of the shaft shoulder and the positioning piece all the time, so that the transmission stability is ensured.
In the three-stage hypoid gear reducer, the outer side wall of the first transmission shaft is provided with a second annular clamp spring groove, and the annular part is a second clamp spring fixed in the second clamp spring groove.
As another scheme, in the three-stage hypoid gear reducer, the annular member is a positioning ring, and the positioning ring is fixedly connected with the first transmission shaft in a welding manner.
In the three-stage hypoid gear reducer, the right end of the first transmission shaft is rotatably connected with the input flange through the second bearing, and the first gear pair is located between the second bearing and the first bearing on the right side, so that the transmission stability of the first transmission shaft is further improved.
Compared with the prior art, the three-level hypoid gear speed reducer has the following advantages:
1. after the speed reducer is assembled with the motor, the spline sleeve is clamped and positioned between the rubber cylinder and the motor spindle, so that the vibration transmitted by the motor spindle can be buffered by utilizing the elasticity of the rubber cylinder, the vibration is effectively reduced and transmitted to the input shaft, and the whole transmission is ensured to be stably carried out.
2. A gap of 0.2 mm-0.6 mm is reserved between the spline block and the left end face of the spline groove, and on the premise of not influencing axial limiting of the spline sleeve, contact between the spline sleeve and the input shaft in the axial direction is reduced, so that the amount of the shake transmitted to the input shaft is further reduced by increasing the buffering force of the rubber cylinder, and the purpose of improving transmission stability is further achieved.
3. The positioning piece adopts a combination piece formed by the gasket and the annular piece, so that the thickness of the gasket can be changed to adapt to working conditions with different distances between the annular piece and the right first bearing caused by machining or assembly errors, and the first transmission shaft is axially limited under the matching of the shaft shoulder and the positioning piece all the time, so that the transmission stability is ensured.
Drawings
Fig. 1 is a schematic sectional structure view of a three-stage hypoid gear reducer.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.
Fig. 4 is a schematic sectional structure view of the three-stage hypoid gear reducer in another direction.
In the figure, 1, a box body; 1a, installing a through hole; 1b, a positioning seat; 2. an input flange; 3. an output shaft; 4. a first transmission shaft; 4a, an active hypoid gear; 5. a second transmission shaft; 6. an input shaft; 6a, spline grooves; 7. a first bearing; 8. a positioning member; 8a, a gasket; 8b, a ring-shaped member; 9. a large driven gear I; 10. a second bearing; 11. a large driven gear II; 12. a driven hypoid gear; 13. a spline housing; 14. a rubber cylinder; 14a, a body; 14b, a convex ring; 15. and a limiting member.
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 4, the three-stage hypoid gear reducer includes a casing 1 and an input flange 2 disposed outside the casing 1, the input flange 2 and the casing 1 are fixedly connected by bolts, and a mounting through hole 1a communicated with the input flange 2 is horizontally disposed in the casing 1. An output shaft 3, a first transmission shaft 4 and a second transmission shaft 5 are horizontally arranged in the box body 1, and an input shaft 6 is horizontally arranged in the input flange 2.
Wherein the content of the first and second substances,
the first transmission shaft 4 is arranged in the installation through hole 1a, and the right end of the first transmission shaft 4 extends out of the installation through hole 1a and is positioned in the input flange 2; the left end of the first transmission shaft 4 extends out of the mounting through hole 1 a; the middle part of the first transmission shaft 4 is rotatably supported in the mounting through hole 1a through two first bearings 7, and preferably the two first bearings 7 are tapered roller bearings. The inner wall of the mounting through hole 1a is provided with a positioning seat 1b which is annularly protruded, the positioning seat 1b is arranged between the two first bearings 7, and two opposite ends of the outer rings of the two first bearings 7 are respectively tightly pressed on two sides of the positioning seat 1 b; the left end of the first transmission shaft 4 is provided with a shaft shoulder, the right end of the first transmission shaft 4 is sleeved with and fixed with an annular positioning piece 8, and two ends, opposite to each other, of the inner rings of the two first bearings 7 are respectively tightly pressed on the shaft shoulder and the positioning piece 8 so as to stabilize the first transmission shaft 4 in the axial direction, and further ensure the transmission stability.
Specifically, as shown in fig. 3, the positioning element 8 is a spacer 8a sleeved outside the first transmission shaft 4 and a ring element 8b fixedly connected to the first transmission shaft 4, and two end faces of the spacer 8a are respectively pressed against the ring element 8b and an inner ring of the first bearing 7 on the right side. The positioning piece 8 is an assembly formed by a gasket 8a and a ring-shaped piece 8b, so that the thickness of the gasket 8a can be changed to adapt to working conditions with different distances between the ring-shaped piece 8b and the right first bearing 7 caused by machining or assembly errors, and the first transmission shaft 4 is always axially limited under the matching of a shaft shoulder and the positioning piece 8, so that the transmission stability is ensured. In this embodiment, the outer side wall of the first transmission shaft 4 is provided with a second annular clamp spring groove, and the ring-shaped member 8b is a second clamp spring fixed in the second clamp spring groove. Naturally, the scheme that the ring-shaped part 8b is used as a positioning ring which is fixedly connected with the first transmission shaft 4 in a welding mode is also available.
The two ends of the input shaft 6 are rotatably connected with the input flange 2 through bearings, the input shaft 6 is parallel to the transmission shaft I4, the left end of the input shaft 6 is connected with the right end of the transmission shaft I4 through a first gear pair, and at the moment, the first gear pair is located between the two bearings. In the present embodiment, the first gear pair includes a first pinion gear formed on the input shaft 6 and a second bull gear 11 fixed to the first drive shaft 4, and the first pinion gear and the first bull gear 9 are engaged with each other. Further, the right end of the first transmission shaft 4 is rotatably connected with the input flange 2 through a second bearing 10, and the first gear pair is located between the second bearing 10 and the first bearing 7 on the right side, so that the transmission stability of the first transmission shaft 4 is further improved.
As shown in fig. 4, both ends of the output shaft 3 and the second transmission shaft 5 are rotatably connected with the box body 1 through bearings; the output shaft 3 is parallel to the second transmission shaft 5 and the second transmission shaft 5 is connected with the second transmission shaft through a second gear pair, in the embodiment, the second gear pair comprises a second small main gear formed on the left end of the second transmission shaft 5 and a second large driven gear 11 fixed on the output shaft 3, and the second small main gear is meshed with the second large driven gear 11.
The first transmission shaft 4 and the second transmission shaft 5 are perpendicular and are connected through a hypoid gear pair, in the embodiment, the hypoid gear pair comprises a driving hypoid gear 4a formed on the right end of the first transmission shaft 4 and a driven hypoid gear 12 fixed on the right end of the second transmission shaft 5, and the driving hypoid gear 4a is meshed with the driven hypoid gear 12.
As shown in fig. 1 and 2, a spline housing 13 coaxial with the input shaft 6 is further arranged in the input flange 2, the left end of the spline housing 13 is sleeved on the right end of the input shaft 6, and the spline housing 13 is in spline fit connection with the input shaft 6. The input shaft 6 is further sleeved with a rubber cylinder 14 and an annular limiting piece 15, the spline housing 13, the rubber cylinder 14 and the limiting piece 15 are sequentially distributed from right to left, the limiting piece 15 is fixedly connected with the input shaft 6, and two ends of the rubber cylinder 14 are respectively tightly pressed on the limiting piece 15 and the spline housing 13. During installation, a main shaft of a motor fixedly connected with the input flange 2 is inserted into the right end of the spline housing 13, 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 13, so that the spline housing 13 is clamped and positioned between the bottom wall of the step and the rubber cylinder 14; the motor main shaft and the spline housing 13 are connected in a spline fit manner.
Wherein the content of the first and second substances,
as shown in fig. 2, the spline housing 13 and the input shaft 6 are connected as follows: the utility model discloses a spline groove 6a, including input shaft 6a, the right-hand member lateral wall of input shaft 6a is equipped with the spline groove 6a that matches with the spline piece in having a round spline piece in the spline groove 6a left end, spline groove 6a and spline piece quantity the same and position one-to-one, spline groove 6a left end is sealed, the right-hand member opening, and the distance between spline piece and the spline groove 6a left end face is 0.2mm ~ 0.6mm, and this preferred distance is 0.5 mm. By adopting the design, on the premise of not influencing the axial limiting of the spline housing 13, the axial contact between the spline housing 13 and the input shaft 6 is reduced, so that the amount of the shake transmitted to the input shaft 6 is further reduced by increasing the buffering force of the rubber cylinder 14, and the purpose of improving the transmission stability is further realized.
The limiting member 15 is structured as follows: an annular clamp spring groove I is formed in the outer side wall of the input shaft 6, and the limiting part 15 is a clamp spring I fixed in the clamp spring groove I. Naturally, the limiting member 15 may be a structure in which "the limiting member 15 is a limiting ring, and the limiting ring is fixedly connected to the input shaft 6 by welding.
The rubber cylinder 14 has the following structure: the rubber tube comprises a cylindrical body 14a and at least two convex rings 14b integrally formed on the outer side wall of the body 14a, wherein the convex rings 14b are distributed at intervals along the axial direction of the body 14a, so that the compression performance of the rubber tube 14 is improved, the rubber tube can be tightly attached to a limiting piece 15, and the axial stress of the input shaft 6 is more obvious.
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 (8)
1. A three-level hypoid gear reducer comprises a box body (1) and an input flange (2) arranged outside the box body (1), wherein the input flange (2) is communicated with an inner cavity of the box body (1), an output shaft (3), a first transmission shaft (4) and a second transmission shaft (5) are horizontally arranged in the box body (1), an input shaft (6) is horizontally arranged in the input flange (2), the input shaft (6) is parallel to the first transmission shaft (4), the left end of the input shaft (6) is connected with the first transmission shaft (4) through a first gear pair, the output shaft (3) is parallel to the second transmission shaft (5) and connected with the second transmission shaft through a second gear pair, the first transmission shaft (4) is vertical to the second transmission shaft (5) and connected with the first transmission shaft through a hypoid gear pair, and is characterized in that a spline sleeve (13) coaxial with the input shaft (6) is further arranged in the input flange (2), the left end of the spline sleeve (13) is sleeved on the right end of, the spline sleeve (13) is in spline fit connection with the input shaft (6); the input shaft (6) is further sleeved with a rubber cylinder (14) and an annular limiting piece (15), the spline sleeve (13), the rubber cylinder (14) and the limiting piece (15) are sequentially distributed from right to left, the limiting piece (15) is fixedly connected with the input shaft (6), and two ends of the rubber cylinder (14) are respectively tightly pressed on the limiting piece (15) and the spline sleeve (13).
2. The three-stage hypoid gear reducer according to claim 1, wherein a ring of spline blocks are arranged in the left end of the spline groove (6a), the spline groove (6a) matched with the spline blocks is arranged on the side wall of the right end of the input shaft (6), the spline grooves (6a) are identical in number and correspond to the spline blocks in position one by one, the left end of the spline groove (6a) is closed, and the distance between the spline blocks and the left end surface of the spline groove (6a) is 0.2 mm-0.6 mm.
3. The three-stage hypoid gear reducer according to claim 1 or 2, wherein the rubber cylinder (14) comprises a cylindrical body (14a) and at least two protruding rings (14b) integrally formed on the outer side wall of the body (14a), and the protruding rings (14b) are axially spaced along the body (14 a).
4. The three-level hypoid gear reducer according to claim 1 or 2, wherein the outer side wall of the input shaft (6) is provided with a first annular clamp spring groove, and the limiting member (15) is a first clamp spring fixed in the first clamp spring groove.
5. The three-stage hypoid gear reducer according to claim 1, wherein the first transmission shaft (4) is rotatably connected with the casing (1) through two first bearings (7), the inner wall of the casing (1) is provided with a positioning seat (1b) which protrudes in an annular shape, the positioning seat (1b) is arranged between the two first bearings (7), and two opposite ends of the outer rings of the two first bearings (7) are respectively tightly pressed on two sides of the positioning seat (1 b); the left end of the first transmission shaft (4) is provided with a shaft shoulder, the right end of the first transmission shaft (4) is sleeved with and fixed with an annular positioning piece (8), and two opposite ends of the inner rings of the two first bearings (7) are respectively tightly pressed on the shaft shoulder and the positioning piece (8).
6. The three-stage hypoid gear reducer according to claim 5, wherein the positioning member (8) is a spacer (8a) sleeved outside the first transmission shaft (4) and an annular member (8b) fixedly connected with the first transmission shaft (4), and two end faces of the spacer (8a) are respectively pressed against the annular member (8b) and an inner ring of the first bearing (7) on the right side.
7. The three-level hypoid gear reducer according to claim 6, wherein the outer side wall of the first transmission shaft (4) is provided with a second annular clamp spring groove, and the ring member (8b) is a second clamp spring fixed in the second clamp spring groove.
8. The three-stage hypoid gear reducer according to claim 5, wherein the right end of the first transmission shaft (4) is also rotatably connected with the input flange (2) through a second bearing (10), and the first gear pair is located between the second bearing (10) and the first bearing (7) on the right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023102294.9U CN214036798U (en) | 2020-12-21 | 2020-12-21 | Three-level hypoid gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023102294.9U CN214036798U (en) | 2020-12-21 | 2020-12-21 | Three-level hypoid gear speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN214036798U true CN214036798U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023102294.9U Active CN214036798U (en) | 2020-12-21 | 2020-12-21 | Three-level hypoid gear speed reducer |
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| Country | Link |
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| CN (1) | CN214036798U (en) |
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- 2020-12-21 CN CN202023102294.9U patent/CN214036798U/en active Active
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