Low-vibration reducer with evenly distributed gears on multiple surfaces and same-axis core and manufacturing method thereof

Abstract

The present invention relates to a method for manufacturing a low-vibration reducer with a coaxial core and evenly distributed gears on multiple sides. The motor shaft and the output shaft are coaxially arranged. The large reduction gear and the small reduction gear on two parallel co-reduction shafts or three centrally symmetrical co-reduction shafts are respectively meshed with the sun gear and the power output gear on the motor shaft and the output shaft at the same time, thereby transferring the torque from the motor shaft to the output shaft at a reduced speed. Through the technical solution, several co-reduction shafts transfer the torque from the motor shaft to the output shaft at a reduced speed. The diameter of the co-reduction shafts can be greatly reduced, thereby effectively reducing the volume of the reduction box. The sun gear and the power output gear on the output shaft are changed from single-sided force meshing to symmetrical force meshing or centrally symmetrical force meshing, thereby canceling out the vibrations generated by each pair of meshing gears. The meshing effect is more stable, the operating temperature is reduced, the noise is greatly reduced, the service life of the gears and lubricating oil is effectively extended, and noise pollution is eliminated.

Description

Technical Field

[0001] The invention relates to a reducer, in particular to a multi-faceted gear uniformly distributed contact type coaxial core low-vibration reducer and a method thereof. Background Art

[0002] Reducer is a device frequently used in mechanical equipment. Its purpose is to reduce the output speed and increase the output torque. Existing reducers are divided into gear reducers, worm reducers and planetary gear reducers according to the transmission type. Worm reducers have a reverse self-locking function, so they can have a larger reduction ratio, a larger size, low transmission efficiency and accuracy, and the input shaft and output shaft are not on the same axis. They are mostly used in lifting equipment; the main features of planetary gear reducers are small size, large speed reduction transmission ratio, the input shaft and output shaft can be on the same axis and have the same direction of rotation. Due to its structural limitations, its output torque is relatively small; gear reducers achieve deceleration through multi-stage gear meshing. Since the torque and speed are inversely proportional under constant power, the reduction shaft at the latter stage has a larger diameter than the reduction shaft at the former stage, resulting in a larger reduction gearbox.

[0003] In the prior art, the coaxial core gear reducer can be directly fixed on the front end of the motor, with compact connection and easy use, and is widely used. However, since the motor shaft and the output shaft are on the same axis, generally only one-stage reduction is adopted, and the diameter of the reduction shaft is larger than the diameter of the motor shaft. The two meshing gears on the reduction shaft are meshed with the input gear and the output gear on the motor shaft and the output shaft respectively in the same direction. At this time, the motor shaft and the output shaft are in a cantilever state and are subjected to unilateral force. In order to prevent the bending deformation of the motor shaft and the output shaft under unilateral force, the stiffness design can only be increased, the cross-sectional diameter can be increased, and the volume of the reducer can be increased. On the other hand, due to the bending deformation of the motor shaft and the output shaft under unilateral force in the same direction, vibration will be generated in the fixed force direction. Due to the occurrence of vibration, first, the working accuracy of the entire equipment will be reduced, and second, the meshing accuracy of the two meshing gears will be caused, the temperature of the reducer will increase, the noise will increase, and the overall service life of the reducer will be seriously affected. Summary of the invention

[0004] In view of this, the main purpose of the present invention is to provide a gear multi-sided uniformly distributed coaxial core low-vibration reducer and method thereof. Through the technical scheme, the motor shaft and the output shaft are coaxially arranged, and two side-by-side co-reduction shafts or three center-symmetrical co-reduction shafts reduce the torque from the motor shaft to the output shaft. Since several co-reduction shafts are synchronized to jointly transmit the torque, each co-reduction shaft decomposes the transmission torque of the motor shaft and then transmits it to the output shaft, so the diameter of each co-reduction shaft can be greatly reduced, and the co-reduction shafts are arranged in the idle space on both sides or around the coaxial line of the motor shaft and the output shaft of the reducer, which can effectively reduce the volume of the reducer, and change the single-sided force meshing of the sun gear on the motor shaft and the power output gear on the output shaft from symmetrical force meshing or center-symmetrical force meshing, so that the vibrations generated by each pair of meshing gears offset each other, thereby making the meshing effect of each pair of meshing gears more stable, reducing the temperature and noise, and extending the service life of the gears and lubricating oil.

[0005] In order to achieve the above object, the technical solution of the present invention is implemented as follows.

[0006] A method for manufacturing a low-vibration reducer with multi-sided uniformly distributed gears meshing in the same axis. The motor shaft and the output shaft are arranged coaxially, and the large reduction gear and the small reduction gear on two side-by-side co-reduction shafts or three centrally symmetrical co-reduction shafts are respectively meshed with the sun gear and the power output gear on the motor shaft and the output shaft at the same time, so as to transfer the torque from the motor shaft to the output shaft.

[0007] A multi-faceted uniformly distributed gear meshing coaxial core low-vibration reducer, comprising a motor shaft, an output shaft, a sun gear and a power output gear, wherein the sun gear is arranged on the shaft extension end of the motor shaft, and the power output gear is arranged on the rear of the output shaft, comprising a housing, a front flange, a central control bracket, a co-incident reduction shaft, a large reduction gear, a small reduction gear, an output front support, an output rear support, a co-incident reduction front support and a co-incident reduction rear support, the rear end of the housing is fixed to the front end of the motor, the central control bracket is arranged on the inner wall of the middle part of the housing, the front flange is co-incidentally fixed to the front end of the housing, the output front support is arranged on the front flange, and the output rear support is fixed to the central control bracket The rear part of the output shaft is arranged in the output front support and the output rear support, two or three same-speed reduction rear supports and same-speed reduction front supports are respectively arranged symmetrically up and down or centrally symmetrically on the rear wall of the box body and the rear wall of the front flange, the large reduction gear and the small reduction gear are respectively arranged on the corresponding same-speed reduction shafts, and both ends of the same-speed reduction shaft are arranged in the same-speed reduction front support and the same-speed reduction rear support at the corresponding positions, the two or three large reduction gears on the same-speed reduction shaft are meshed with the sun gear on the motor shaft from different directions at the same time, and the two or three small reduction gears on the same-speed reduction shaft are meshed with the power output gear on the output shaft from different directions at the same time.

[0008] As a further technical solution, it also includes an axial output support and an output shaft step, wherein the axial output support is arranged on the output shaft, the front end of the axial output support is pressed against the front flange, and the rear end of the axial output support is pressed against the output shaft step of the output shaft.

[0009] As a further technical solution, a concentric stop platform is provided at the front end of the box body, and a concentric stop is provided at the rear end of the front flange. The concentric stop of the front flange is clamped in the concentric stop platform at the front end of the box body and fixedly connected by fixing bolts.

[0010] As a further technical solution, a plurality of oil seal positions are arranged on the front portion of the front flange, and the oil seals are arranged in the oil seal positions.

[0011] The beneficial effects of adopting the above technical scheme are: a gear multi-sided uniformly distributed coaxial core low-vibration reducer and method thereof. Through this technical scheme, the motor shaft and the output shaft are coaxially arranged, and two side-by-side co-reduction shafts or three center-symmetrical co-reduction shafts reduce the torque from the motor shaft to the output shaft. Since several co-reduction shafts are synchronized to jointly transmit the torque, each co-reduction shaft decomposes the transmission torque of the motor shaft and then merges and transmits it to the output shaft. Therefore, the diameter of each co-reduction shaft can be greatly reduced, and the co-reduction shafts are arranged in the idle space on both sides or around the coaxial line of the motor shaft and the output shaft of the reducer, which can effectively reduce the volume of the reducer, and change the single-sided force meshing of the sun gear on the motor shaft and the power output gear on the output shaft from symmetrical force meshing or center-symmetrical force meshing, so that the vibrations generated by each pair of meshing gears cancel each other out, thereby making the meshing effect of each pair of meshing gears more stable, the working temperature drops, the noise is greatly reduced, the service life of the gears and lubricating oil is effectively extended, and noise pollution is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the central control bracket structure in Example 1 of the present invention.

[0014] Figure 3 This is a schematic diagram of the motor shaft transmission structure in Embodiment 1 of the present invention.

[0015] Figure 4 Schematic diagram of the output shaft transmission structure in Embodiment 1 of the present invention.

[0016] Figure 5 This is a schematic diagram of the central control bracket structure in the second embodiment of the present invention.

[0017] Figure 6 This is a schematic diagram of the motor shaft transmission structure in the second embodiment of the present invention.

[0018] Figure 7 This is a schematic diagram of the output shaft transmission structure in the second embodiment of the present invention.

[0019] In the figure, 1 is the motor shaft, 2 is the output shaft, 3 is the same reduction shaft, 4 is the sun gear, 5 is the power output gear, 6 is the housing, 7 is the front flange, 8 is the central control bracket, 9 is the large reduction gear, 10 is the small reduction gear, 11 is the output front support, 12 is the output rear support, 13 is the same reduction front support, 14 is the same reduction rear support, 15 is the same core stop platform, 16 is the same core stop, 17 is the oil seal position, 18 is the oil seal, 19 is the axial output support, and 20 is the output shaft step. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 7 shown.

[0022] The present invention relates to a method for manufacturing a low-vibration reducer with multi-sided uniformly distributed gears meshing in the same axis. The motor shaft 1 and the output shaft 2 are arranged coaxially, and the large reduction gear 9 and the small reduction gear 10 on two side-by-side co-reduction shafts 3 or three centrally symmetrical co-reduction shafts 3 are respectively meshed with the sun gear 4 and the power output gear 5 on the motor shaft 1 and the output shaft 2 at the same time, thereby reducing the torque from the motor shaft 1 and transmitting it to the output shaft 2.

[0023] The present invention relates to a multi-faceted uniformly distributed gear meshing coaxial core low-vibration reducer, comprising a motor shaft 1, an output shaft 2, a sun gear 4 and a power output gear 5, wherein the sun gear 4 is arranged on the shaft extension end of the motor shaft 1, and the power output gear 5 is arranged on the rear of the output shaft 2, comprising a housing 6, a front flange 7, a central control bracket 8, a co-ordinating reduction shaft 3, a large reduction gear 9, a small reduction gear 10, an output front support 11, an output rear support 12, a co-ordinating reduction front support 13 and a co-ordinating reduction rear support 14, wherein the rear end of the housing 6 is fixed to the front end of the motor, the central control bracket 8 is arranged on the inner wall of the middle part of the housing 6, the front flange 7 is co-ordinatingly fixed to the front end of the housing 6, the output front support 11 is arranged on the front flange 7, and the output rear support 12 is fixed at On the central control bracket 8, the rear part of the output shaft 2 is arranged in the output front support 11 and the output rear support 12, two or three in-line reduction rear supports 14 and in-line reduction front supports 13 are respectively symmetrically arranged on the rear wall of the box body 6 and the rear wall of the front flange 7, the large reduction gear 9 and the small reduction gear 10 are respectively arranged on the corresponding in-line reduction shaft 3, and both ends of the in-line reduction shaft 3 are arranged in the in-line reduction front support 13 and the in-line reduction rear support 14 at the corresponding positions, the two or three large reduction gears 9 on the in-line reduction shaft 3 are meshed with the sun gear 4 on the motor shaft 1 from different directions at the same time, and the two or three small reduction gears 10 on the in-line reduction shaft 3 are meshed with the power output gear 5 on the output shaft 2 from different directions at the same time.

[0024] As a further embodiment, it also includes an axial output support 19 and an output shaft step 20, wherein the axial output support 19 is arranged on the output shaft 2, the front end of the axial output support 19 is pressed against the front flange 7, and the rear end of the axial output support 19 is pressed against the output shaft step 20 of the output shaft 2.

[0025] As a further embodiment, a concentric stop platform 15 is provided at the front end of the box body 6, and a concentric stop 16 is provided at the rear end of the front flange 7. The concentric stop 16 of the front flange 7 is clamped in the concentric stop platform 15 at the front end of the box body 6 and fixedly connected by fixing bolts.

[0026] As a further embodiment, a plurality of oil seal positions 17 are arranged on the front portion of the front flange 7 , and oil seals 18 are arranged in the oil seal positions 17 .

[0027] In the first embodiment of the present invention, a vertical gear is designed for the first time to transmit in the same direction and to be evenly distributed in parallel in both directions to mesh synchronously with the sun gear 4 and the power output gear 5 respectively, thereby offsetting the radial force and vibration coefficient generated by the meshing of the sun gear 4 and the power output gear 5 under load, effectively improving the vertical contact between the tooth surfaces, enhancing the bearing capacity of the gears, and reducing the noise and vibration during the meshing operation of the tooth surfaces.

[0028] In the second embodiment of the present invention, the design adopts the central symmetrical gear for the first time, which is evenly distributed and meshes with the sun gear 4 and the power output gear 5 from three directions respectively, offsetting the radial force and vibration coefficient generated by the meshing of the sun gear 4 and the power output gear 5 under load, effectively improving the vertical contact between the tooth surfaces, enhancing the bearing capacity of the gears, reducing the noise and vibration during the tooth surface meshing operation, which is beneficial to make the tooth surface run smoothly after meshing, and enhancing the service life of the gears and gear shafts.

[0029] In the embodiment of the present invention, a movable central control bracket 8 is designed for the first time to effectively support the output rear support 12 of the output shaft 2, and two co-rotating reduction shafts 3 are arranged at symmetrical positions in the center, or three co-rotating reduction shafts 3 are arranged in the space around the centrally symmetrical motor shaft 1 and the output shaft 2, so as to fully and reasonably utilize the effective space in the box body 6, and achieve the smallest volume and lightest weight among mechanical reducers of the same power.

[0030] In the embodiment of the present invention, a "W"-shaped output structure is designed for the first time, and an axial output support 19 is added in the middle of the output shaft 2. Through the dual protection of radial and axial directions, the transmission stability of the output shaft 2 is effectively improved.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

1. A low-vibration reducer with uniformly distributed gears meshing on multiple surfaces and a coaxial core, comprising a motor shaft, an output shaft, a sun gear and a power output gear, wherein the sun gear is arranged on the shaft extension end of the motor shaft, and the power output gear is arranged on the rear part of the output shaft, characterized in that: It includes a box body, a front flange, a central control bracket, a same-speed reduction shaft, a large reduction gear, a small reduction gear, an output front support, an output rear support, a same-speed reduction front support and a same-speed reduction rear support. The rear end of the box body is fixed to the front end of the motor, the central control bracket is arranged on the middle inner wall of the box body, the front flange is fixed on the front end of the box body concentrically, the output front support is arranged on the front flange, the output rear support is fixed on the central control bracket, the rear part of the output shaft is arranged in the output front support and the output rear support, two or three same-speed reduction rear supports and same-speed reduction front supports are respectively arranged symmetrically up and down or centrally symmetrically on the rear wall of the box body and the rear wall of the front flange, the large reduction gear and the small reduction gear are respectively arranged on the corresponding same-speed reduction shaft, the two ends of the same-speed reduction shaft are arranged in the same-speed reduction front support and the same-speed reduction rear support at the corresponding positions, the two or three large reduction gears on the same-speed reduction shaft are meshed with the sun gear on the motor shaft from different directions at the same time, and the two or three small reduction gears on the same-speed reduction shaft are meshed with the power output gear on the output shaft from different directions at the same time.

2. The low vibration reducer with uniformly distributed gears on multiple surfaces meshing with the same axis as in claim 1, characterized in that: It also includes an axial output support and an output shaft step. The axial output support is arranged on the output shaft, the front end of the axial output support is pressed against the front flange, and the rear end of the axial output support is pressed against the output shaft step of the output shaft.

3. The low vibration reducer with uniformly distributed gears on multiple surfaces meshing with the same axis as in claim 1, characterized in that: The front end of the box body is provided with a concentric stop platform, and the rear end of the front flange is provided with a concentric stop. The concentric stop of the front flange is clamped in the concentric stop platform at the front end of the box body and is fixedly connected by fixing bolts.

4. The low vibration reducer with uniformly distributed gears on multiple surfaces meshing with the same axis as in claim 1, characterized in that: A plurality of oil seal positions are arranged on the front portion of the front flange, and the oil seals are arranged in the oil seal positions.

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