High-precision crossed roller bearing ultrathin speed reducer

Abstract

The utility model discloses a high-precision ultrathin speed reducer with crossed roller bearings, and relates to the technical field of speed reducers, in particular to the high-precision ultrathin speed reducer with the crossed roller bearings, which comprises a motor, a motor shaft is arranged in the motor, one end of the motor is provided with a motor flange perpendicular to the motor shaft, and the other end of the motor is provided with a bearing. And the motor flange is fixedly connected with a speed reducer shell through a bolt. According to the high-precision crossed roller bearing ultra-thin speed reducer, the second-stage shaft, the third-stage shaft and the output shaft are arranged in a matched mode, so that the high-precision crossed roller bearing ultra-thin speed reducer has the effect that the high-precision crossed roller bearing ultra-thin speed reducer can be installed in a narrow space to be normally used; through the arrangement of the first-stage driving bevel gear shaft, the high-precision crossed roller bearing ultrathin speed reducer has the effect of being large in speed change ratio range, and through the arrangement of the first-stage driving bevel gear shaft, the high-precision crossed roller bearing ultrathin speed reducer has the effect of bearing large radial force and axial force at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a high-precision, cross-roller bearing ultra-thin reducer. Background Art

[0002] With the development of industrialization, the demand for reducers as power transmission devices in the market has gradually increased. The miniaturization of reducers in some special scenarios is also one of the development directions of many reducers, such as medical equipment, electronic equipment, hoisting equipment with size restrictions in height or a certain direction, etc. Therefore, reducing the size of the reducer has become an inevitable problem. The existing similar products are hollow rotating platforms, which use worm gear transmission. However, the existing small-volume rotating platforms have the disadvantages of small speed ratio range, small transmission torque and inability to withstand large radial force and axial force at the same time, making them only suitable for scenarios with low requirements for torque transmission. For this reason, a cross roller bearing ultra-thin reducer is proposed to solve the above problems. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-precision, cross-roller bearing ultra-thin reducer, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a high-precision, cross-roller bearing ultra-thin reducer, including a motor, a motor shaft is arranged inside the motor, a motor flange perpendicular to the motor shaft is arranged at one end of the motor, the motor flange is fixedly connected to the reducer housing by bolts, a vertical rib plate perpendicular to the motor shaft is arranged inside the reducer housing close to the motor, a transverse rib plate horizontal to the motor shaft is arranged inside the reducer housing away from the motor, a primary driving bevel gear shaft concentric with the motor shaft is installed on the vertical rib plate, a secondary shaft, a tertiary shaft and an output shaft parallel to each other are installed on the transverse rib plate, cross-roller bearings are arranged between the secondary shaft, the tertiary shaft and the output shaft and the transverse rib plate, a primary passive bevel gear and a secondary active gear are respectively installed at both ends of the secondary shaft, a secondary passive gear and a tertiary active gear are respectively installed at both ends of the tertiary shaft, and a tertiary passive gear is installed at one end of the output shaft.

[0007] Preferably, a brake and a cooling fan are provided at the tail of the motor. The brake is used to quickly brake the motor shaft, and the cooling fan is used to dissipate heat for the motor, thereby providing a guarantee for the normal operation of the motor.

[0008] Preferably, a coupling is provided between the motor shaft and the primary active bevel gear shaft, and the primary active bevel gear shaft is installed between two vertical ribs through two face-to-face mounted tapered roller bearings, so that the primary active bevel gear shaft can withstand both radial force and axial force.

[0009] Preferably, since the crossed roller bearings have excellent rotational accuracy and can withstand both radial force and axial force, the output shaft installed by two crossed roller bearings not only has high rotational accuracy but also can withstand both radial force and axial force, the secondary shaft and the tertiary shaft are also installed by crossed roller bearings and their rotational accuracy is also high, thereby making the transmission accuracy of the entire reducer high and able to withstand both radial force and axial force.

[0010] Preferably, a small bevel gear is provided at the inner end of the first-stage active bevel gear shaft, and the small bevel gear is meshed with the first-stage passive bevel gear, which not only realizes the first-stage speed reduction transmission power but also changes the power direction.

[0011] Preferably, the secondary driving gear and the secondary passive gear are meshed to realize the second stage of power transmission, and the tertiary driving gear and the tertiary passive gear are meshed to realize the third stage of power transmission. The three-stage reduction tends to be distributed in a straight line, making the reducer long and thin. A large reduction ratio can be achieved through the three-stage reduction to increase the torque.

[0012] The utility model provides a high-precision, cross-roller bearing ultra-thin reducer, which has the following beneficial effects:

[0013] 1. The high-precision, cross-roller bearing ultra-thin reducer, through the matching arrangement of the secondary shaft, the tertiary shaft and the output shaft, enables the high-precision, cross-roller bearing ultra-thin reducer to be installed in a small space for normal use. Since the secondary shaft, the tertiary shaft and the output shaft are parallel to each other and arranged in a straight line, the appearance of the reducer housing is thin and long, and the output shaft at the end of the reducer housing can be installed in a small space for normal use.

[0014] 2. The high-precision, cross-roller bearing ultra-thin reducer has a large speed ratio range through the matching arrangement of the reducer housing, the first-stage active bevel gear shaft, the second-stage shaft and the third-stage shaft. The first-stage active bevel gear shaft, the second-stage shaft and the third-stage shaft can be installed through the slender reducer housing to achieve multi-stage reduction.

[0015] 3. The high-precision, cross-roller bearing ultra-thin reducer, through the setting of the primary active bevel gear shaft, enables the high-precision, cross-roller bearing ultra-thin reducer to have the effect of being able to withstand large radial force and axial force at the same time. Since the cross-roller bearing has excellent rotation accuracy and can withstand radial force and axial force at the same time, the output shaft installed by two cross-roller bearings not only has high rotation accuracy but also can withstand radial force and axial force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a cross-sectional view of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the appearance view of the utility model.

[0018] In the figure: 1. electric motor; 101. motor shaft; 102. motor flange; 103. brake; 104. cooling fan; 2. reducer housing; 201. vertical ribs; 202. transverse ribs; 3. primary driving bevel gear shaft; 301. small bevel gear; 4. secondary shaft; 5. tertiary shaft; 6. output shaft; 7. cross roller bearing; 8. primary passive bevel gear; 9. secondary driving gear; 10. secondary passive gear; 11. tertiary driving gear; 12. tertiary passive gear; 13. coupling. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1 to Figure 2The utility model provides a technical solution: a high-precision, cross roller bearing ultra-thin reducer, including a motor 1, a motor shaft 101 is arranged inside the motor 1, a motor flange 102 perpendicular to the motor shaft 101 is arranged at one end of the motor 1, a brake 103 and a cooling fan 104 are arranged at the tail of the motor 1, the brake 103 is used to quickly brake the motor shaft 101, and the cooling fan 104 is used to dissipate heat for the motor 1 to ensure the normal operation of the motor 1, the motor flange 102 is fixedly connected to the reducer housing 2 by bolts, and the reducer housing 2 is provided with a motor shaft 101 near the motor 1. 1 vertical rib plate 201, the reducer housing 2 is provided with a horizontal rib plate 202 which is horizontal with the motor shaft 101, the vertical rib plate 201 is provided with a primary driving bevel gear shaft 3 which is concentric with the motor shaft 101, a coupling 13 is provided between the motor shaft 101 and the primary driving bevel gear shaft 3, the primary driving bevel gear shaft 3 is installed between the two vertical rib plates 201 through two tapered roller bearings which are installed face to face, so that the primary driving bevel gear shaft 3 can bear both radial force and axial force, the horizontal rib plate 202 is provided with a secondary shaft 4, a tertiary shaft 5 and an output shaft 6 which are parallel to each other, the secondary shaft 4, the tertiary shaft 5 A cross roller bearing 7 is arranged between the output shaft 6 and the cross rib plate 202. Since the cross roller bearing 7 has excellent rotation accuracy and can withstand radial force and axial force at the same time, the output shaft 6 installed by two cross roller bearings 7 not only has high rotation accuracy but also can withstand radial force and axial force. The secondary shaft 4 and the tertiary shaft 5 are also installed by the cross roller bearings 7, so their rotation accuracy is also high, so that the transmission accuracy of the whole reducer is high and can withstand radial force and axial force. The two ends of the secondary shaft 4 are respectively installed with a primary passive bevel gear 8 and a secondary driving gear 9, and the two ends of the tertiary shaft 5 are respectively installed with a primary passive bevel gear 8 and a secondary driving gear 9. A secondary passive gear 10 and a tertiary driving gear 11 are installed, a tertiary passive gear 12 is installed at one end of the output shaft 6, a small bevel gear 301 is arranged at the inner end of the primary driving bevel gear shaft 3, and the small bevel gear 301 is meshed with the primary passive bevel gear 8, which not only realizes the first stage of speed reduction and power transmission but also can change the power direction, the secondary driving gear 9 is meshed with the secondary passive gear 10 to realize the second stage of speed reduction and power transmission, the tertiary driving gear 11 is meshed with the tertiary passive gear 12 to realize the third stage of speed reduction and power transmission, and the three-stage speed reduction tends to be linearly distributed, making the reducer long and thin, and a large speed reduction ratio can be achieved through the three-stage speed reduction to increase the torque.

[0021] When in use, the cross-sectional size of the reducer housing 2 remains unchanged, and the length is determined according to the reduction ratio requirement, that is, the greater the required reduction ratio, the more reduction stages there are. Since all the reduction shafts are arranged in a straight line, the more reduction stages there are, the longer the reducer housing 2 is. This is because the reducer housing 2 only increases in length without increasing the cross-sectional size when increasing the reduction stage, and even if the reduction ratio is already large, the output shaft 6 can still be installed in a small space, thereby achieving a high reduction ratio reducer that can be installed even if the space reserved for the equipment is small. There are two installation methods for the rotating shaft inside the reducer, one is a first-stage active bevel gear shaft 3 installed by two face-to-face mounted tapered roller bearings, and the other is other cross roller bearings 7. The rotating shafts of these two installation methods can withstand both radial force and axial force at the same time, and the rotation accuracy is relatively high, thereby improving the rotation accuracy of the reducer.

[0022] In summary, the high-precision, cross-roller bearing 7 ultra-thin reducer has a reducer housing 2 that has a thin and long appearance because the secondary shaft 4, the tertiary shaft 5 and the output shaft 6 are parallel to each other and arranged in a straight line, so that the output shaft 6 at the end of the reducer housing 2 can be installed in a narrow space for normal use. The primary active bevel gear shaft 3, the secondary shaft 4 and the tertiary shaft 5 multi-stage reduction shafts can be installed through the slender reducer housing 2, thereby realizing multi-stage reduction. Since the cross-roller bearing 7 has excellent rotation accuracy and can withstand radial force and axial force at the same time, the output shaft 6 installed by two cross-roller bearings 7 not only has high rotation accuracy but also can withstand radial force and axial force.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-precision, cross-roller bearing ultra-thin reducer, comprising an electric motor (1), characterized in that: The motor (1) is provided with a motor shaft (101) inside, and a motor flange (102) perpendicular to the motor shaft (101) is provided at one end of the motor (1). The motor flange (102) is fixedly connected to a reducer housing (2) by bolts. A vertical rib plate (201) perpendicular to the motor shaft (101) is provided inside the reducer housing (2) close to the motor (1), and a transverse rib plate (202) horizontal to the motor shaft (101) is provided inside the reducer housing (2) away from the motor (1). A A first-stage active bevel gear shaft (3) is arranged at the center of the gear, and a second-stage shaft (4), a third-stage shaft (5) and an output shaft (6) are mounted on the cross rib plate (202) in parallel with each other. Cross roller bearings (7) are arranged between the second-stage shaft (4), the third-stage shaft (5) and the output shaft (6) and the cross rib plate (202). A first-stage passive bevel gear (8) and a second-stage active gear (9) are mounted at both ends of the second-stage shaft (4), a second-stage passive gear (10) and a third-stage active gear (11) are mounted at both ends of the third-stage shaft (5), and a third-stage passive gear (12) is mounted at one end of the output shaft (6).

2. The high-precision, cross-roller bearing ultra-thin reducer according to claim 1 is characterized in that: A brake (103) and a cooling fan (104) are provided at the rear of the motor (1); the brake (103) is used to quickly brake the motor shaft (101); and the cooling fan (104) is used to dissipate heat for the motor (1), thereby ensuring normal operation of the motor (1).

3. The high-precision, cross-roller bearing ultra-thin reducer according to claim 1 is characterized in that: A coupling (13) is provided between the motor shaft (101) and the first-stage active bevel gear shaft (3); the first-stage active bevel gear shaft (3) is installed between two vertical rib plates (201) via two tapered roller bearings installed face to face, so that the first-stage active bevel gear shaft (3) can withstand both radial force and axial force.

4. The high-precision, cross-roller bearing ultra-thin reducer according to claim 1 is characterized in that: Since the crossed roller bearings (7) have excellent rotational accuracy and can bear radial force and axial force at the same time, the output shaft (6) installed by the two crossed roller bearings (7) not only has high rotational accuracy but also can bear radial force and axial force, the secondary shaft (4) and the tertiary shaft (5) are also installed by the crossed roller bearings (7) and their rotational accuracy is also high, thereby making the transmission accuracy of the entire reducer high and can bear radial force and axial force.

5. The high-precision, cross-roller bearing ultra-thin reducer according to claim 1 is characterized in that: A small bevel gear (301) is arranged at the inner end of the first-stage active bevel gear shaft (3), and the small bevel gear (301) meshes with the first-stage passive bevel gear (8), thereby not only realizing the first-stage speed reduction transmission of power but also changing the direction of the power.

6. The high-precision, cross-roller bearing ultra-thin reducer according to claim 1 is characterized in that: The second-stage driving gear (9) and the second-stage passive gear (10) are meshed and driven to realize the second-stage reduction in power transmission, and the third-stage driving gear (11) and the third-stage passive gear (12) are meshed and driven to realize the third-stage reduction in power transmission. The three-stage reduction tends to be linearly distributed, making the reducer long and thin. Through the three-stage reduction, a large reduction ratio can be achieved to increase the torque.

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