Pendulum bead speed reducer
By using the eccentric transmission and ball oscillation transmission of the ball reducer, the problems of complex structure and high cost of traditional reducers are solved, and high torque output and extended service life are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional multi-stage gear reducers are complex in structure and expensive, while parallel shaft drives are expensive, prone to wear, and difficult to achieve high torque output.
The structure adopts a ball bearing reducer, which uses the eccentric shaft sleeve and the cross oscillating disk for eccentric transmission and deceleration, thereby reducing the speed of the output shaft and increasing the torque.
The structure was simplified, the cost was reduced, the output torque was increased, and the service life of the reducer was extended.
Smart Images
Figure CN224064775U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of speed reducers, and in particular to a ball bearing speed reducer. Background Technology
[0002] In the field of mechanical transmission, multi-stage gear reducers, such as planetary gear reducers and parallel shaft gear reducers, are generally used to provide larger output torque. Traditional planetary gear reducers are limited by the planet carrier and gear housing, resulting in complex structures and shapes and high manufacturing costs. While parallel shaft transmissions can achieve coaxial transmission of input and output, to obtain larger output torque, helical gear reducers with a large number of teeth are required. Helical gear transmissions have slightly lower machining accuracy than spur gears, are more expensive, larger in size, and also generate axial forces. Furthermore, helical gear transmissions are prone to wear, leading to a shorter reducer life. Therefore, a ball bearing reducer is proposed. Utility Model Content
[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.
[0004] A ball bearing reducer includes a fixed base, a first housing vertically disposed at the top of the fixed base, and a second housing vertically disposed at the top of the first housing. A second reduction disc is rotatably disposed inside the first housing, and an eccentric bushing is vertically inserted into the top of the second reduction disc. An eccentric shaft assembly is vertically inserted into the top of the eccentric bushing, and an output shaft is vertically inserted into the top of the eccentric shaft assembly. A first cross-shaped oscillating disc is disposed between the second reduction disc and the eccentric bushing, and the first cross-shaped oscillating disc is fitted onto the outside of the eccentric bushing. The first cross-shaped oscillating disc and the second reduction disc are parallel to each other, and a parallel gap is provided between the second reduction disc and the first cross-shaped oscillating disc. A plurality of first cross-shaped sway balls are disposed, and the first cross-shaped sway balls are all distributed around the side of the surface of the second reduction disk. The first reduction disk is disposed between the eccentric bushing and the eccentric shaft assembly, and the first reduction disk is formed around the side of the top of the eccentric bushing. The eccentric shaft assembly passes through the first reduction disk. A second cross-shaped sway disk is also disposed between the eccentric bushing and the eccentric shaft assembly, and the second cross-shaped sway disk is fitted outside the eccentric shaft assembly. A plurality of second cross-shaped sway balls are disposed in the parallel gap between the second cross-shaped sway disk and the first reduction disk, and the second cross-shaped sway balls are all distributed around the side of the surface of the first reduction disk.
[0005] Preferably, an input bushing that is connected to an external input shaft is provided between the second reducer and the first housing, and the input bushing is laterally located at the bottom end of the second reducer, and the input bushing and the second reducer rotate in the same direction.
[0006] Preferably, a bearing cover and a first main shaft bearing are provided between the second reducer and the first housing, and the bearing cover is located laterally at the bottom of the outside of the first housing, and the first main shaft bearing is fitted on the outer side of the second reducer and rotates in the middle position of the bearing cover.
[0007] Preferably, a thrust ball bearing is provided between the first spindle bearing and the second reduction disc, and the thrust ball bearing is fitted on the outer side of the second reduction disc, and the thrust ball bearing and the first spindle bearing are parallel to each other.
[0008] Preferably, a second main shaft bearing is provided between the eccentric bushing and the first cross swing disk, and the second main shaft bearing is laterally fitted outside the eccentric bushing, and the second main shaft bearing is laterally located at the middle position of the first cross swing disk.
[0009] Preferably, a first end cover is provided between the first housing and the second housing, and the first end cover is laterally located at the top of the first housing. The second housing is vertically disposed on the first end cover, and the eccentric bushing is vertically inserted through the first end cover, and the first speed reducer is laterally located on the first end cover. The second housing is provided with a second end cover, and the second end cover is laterally located on the second housing. The output shaft is inserted through the second end cover, and the output shaft rotates at the middle position of the second end cover.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the second reduction disc performs eccentric transmission between the first cross-shaped eccentric ball and the first cross-shaped oscillating disc, thereby driving the eccentric bushing to perform eccentric transmission; the first reduction disc performs eccentric transmission between the second cross-shaped eccentric ball and the second cross-shaped oscillating disc, thereby driving the eccentric shaft assembly and the output shaft to perform eccentric reduction transmission; and through the eccentric transmission between the second reduction disc and the first cross-shaped oscillating disc and the eccentric transmission between the first reduction disc and the second cross-shaped oscillating disc in sequence, the output shaft reduces speed and increases output torque when performing output transmission.
[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of a ball bearing reducer.
[0014] Figure 2 This is a schematic diagram of another structure of a ball bearing reducer;
[0015] Figure 3 This is another structural schematic diagram of a ball bearing reducer.
[0016] The figure shows: 1. Fixed base, 2. First housing, 3. First end cover, 4. Second housing, 5. Second end cover, 6. Output shaft, 7. First main shaft bearing, 8. Thrust ball bearing, 9. First cross swing disk, 10. Eccentric bushing, 11. Second main shaft bearing, 12. First reduction disk, 13. Second cross swing disk, 14. Eccentric shaft assembly, 15. Input bushing, 16. Bearing cover, 17. Second reduction disk. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3In this embodiment of the present invention, a ball bearing reducer includes a fixed base 1. A first housing 2 is vertically disposed at the top of the fixed base 1, and a second housing 4 is vertically disposed at the top of the first housing 2. A second reduction disc 17 is rotatably disposed inside the first housing 2, and the second reduction disc 17 rotates at the bottom of the first housing 2. An eccentric bushing 10 is vertically inserted into the top of the second reduction disc 17, and an eccentric shaft assembly 14 is vertically inserted into the top of the eccentric bushing 10. An output shaft 6 is vertically inserted into the top of the eccentric shaft assembly 14. A first cross-shaped swing disc 9 is disposed between the second reduction disc 17 and the eccentric bushing 10. The first cross-shaped swaying disk 9 is fitted onto the outside of the eccentric bushing 10, and the first cross-shaped swaying disk 9 and the second reduction disk 17 are parallel to each other. A plurality of first cross-shaped swaying balls (not shown in the figure) are arranged in the parallel gap between the second reduction disk 17 and the first cross-shaped swaying disk 9. These first cross-shaped swaying balls are distributed around the side edges of the surface of the second reduction disk 17 and roll along the side edges of the surface of the second reduction disk 17. This allows the second reduction disk 17 to sway through the first cross-shaped swaying balls and the first cross-shaped swaying disk 9, thereby driving the eccentric bushing 10 to sway. In the eccentric drive system, a first reduction gear 12 is provided between the eccentric bushing 10 and the eccentric shaft assembly 14, and the first reduction gear 12 is formed around the side of the top end of the eccentric bushing 10. The eccentric shaft assembly 14 passes through the first reduction gear 12. A second cross-shaped swing disk 13 is also provided between the eccentric bushing 10 and the eccentric shaft assembly 14, and the second cross-shaped swing disk 13 is fitted onto the outside of the eccentric shaft assembly 14. The second cross-shaped swing disk 13 and the first reduction gear 12 are parallel to each other. A plurality of second cross-shaped eccentric balls (not shown in the figure) are provided in the parallel gap between the second cross-shaped swing disk 13 and the first reduction gear 12. (As shown), the second cross-shaped sway balls are all distributed around the side of the surface of the first reduction disk 12, and the second cross-shaped sway balls roll on the side of the surface of the first reduction disk 12, so that the first reduction disk 12 performs sway transmission between the second cross-shaped sway balls and the second cross-shaped sway disk 13, thereby driving the eccentric shaft assembly 14 and the output shaft 6 to perform eccentric reduction transmission. And through the sway transmission between the second reduction disk 17 and the first cross-shaped sway disk 9 and the sway transmission between the first reduction disk 12 and the second cross-shaped sway disk 13 in sequence, the output shaft reduces speed and increases output torque when performing output transmission.
[0019] An input sleeve 15, which is connected to an external input shaft, is provided between the second reduction disc 17 and the first housing 2. The input sleeve 15 is located laterally at the bottom end of the second reduction disc 17, and the input sleeve 15 and the second reduction disc 17 rotate in the same direction, thereby causing the input shaft to drive the second reduction disc 17 to rotate inside the first housing 2 through the input sleeve 15.
[0020] A bearing cover 16 and a first spindle bearing 7 are also provided between the second reducer 17 and the first housing 2. The bearing cover 16 is located laterally at the bottom of the outside of the first housing 2, and the first spindle bearing 7 is fitted on the outer side of the second reducer 17 and rotates in the middle position of the bearing cover 16. Thus, the first spindle bearing 7 makes the second reducer 17 stable when it rotates inside the first housing 2.
[0021] A thrust ball bearing 8 is provided between the first main shaft bearing 7 and the second reduction disk 17. The thrust ball bearing 8 is fitted on the outer side of the second reduction disk 17 and is parallel to the first main shaft bearing 7. The first main shaft bearing 7 is lifted and the gap between the first main shaft bearing 7 and the thrust ball bearing 8 is adjusted by rotating the bearing cover 16 at the bottom of the first housing 2.
[0022] A second main shaft bearing 11 is provided between the eccentric bushing 10 and the first cross swing disk 9, and the second main shaft bearing 11 is laterally fitted outside the eccentric bushing 10, and the second main shaft bearing 11 is laterally located at the middle position of the first cross swing disk 9.
[0023] A first end cover 3 is provided between the first housing 2 and the second housing 4, and the first end cover 3 is laterally located at the top of the first housing 2. The second housing 4 is vertically arranged on the first end cover 3, and the eccentric bushing 10 is vertically inserted through the first end cover 3, and the first speed reducer 12 is laterally located on the first end cover 3. The second housing 4 is provided with a second end cover 5, and the second end cover 5 is laterally located on the second housing 4. The output shaft 6 is inserted through the second end cover 5 and rotates at the middle position of the second end cover 5.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A pendulum bead decelerator comprising a fixed seat, characterized in that, The top end of the fixed seat is vertically provided with a first shell, and the top end of the first shell is vertically provided with a second shell, the inside of the first shell is rotationally provided with a second reduction disc, and the top end of the second reduction disc is vertically inserted with an eccentric shaft sleeve, the top end of the eccentric shaft sleeve is vertically inserted with an eccentric shaft assembly, and the top end of the eccentric shaft assembly is vertically inserted with an output shaft, a first cross swing disc is arranged between the second reduction disc and the eccentric shaft sleeve, the first cross swing disc is sleeved on the outside of the eccentric shaft sleeve, the first cross swing disc and the second reduction disc are parallel to each other, a plurality of first cross eccentric rolling balls are arranged in the parallel gap between the second reduction disc and the first cross swing disc, and the first cross eccentric rolling balls are distributed around the side of the surface of the second reduction disc, a first reduction disc is arranged between the eccentric shaft sleeve and the eccentric shaft assembly, the first reduction disc is formed around the side of the top end of the eccentric shaft sleeve, and the eccentric shaft assembly penetrates the first reduction disc, a second cross swing disc is further arranged between the eccentric shaft sleeve and the eccentric shaft assembly, and the second cross swing disc is sleeved on the outside of the eccentric shaft assembly, a plurality of second cross eccentric rolling balls are arranged in the parallel gap between the second cross swing disc and the first reduction disc, and the second cross eccentric rolling balls are distributed around the side of the surface of the first reduction disc.
2. The pendulum bead speed reducer according to claim 1, wherein An input shaft sleeve in driving connection with an external input shaft is arranged between the second reduction disc and the first shell, the input shaft sleeve is transversely located at the bottom end of the second reduction disc, and the input shaft sleeve and the second reduction disc rotate in the same direction.
3. The pendulum bead speed reducer according to claim 2, wherein A bearing cover and a first main shaft bearing are further arranged between the second reduction disc and the first shell, the bearing cover is transversely located at the bottom end of the outside of the first shell, and the first main shaft bearing is sleeved on the outside of the second reduction disc and rotates in the middle position of the bearing cover.
4. The pendulum bead speed reducer according to claim 3, wherein A thrust ball bearing is arranged between the first main shaft bearing and the second reduction disc, the thrust ball bearing is sleeved on the outside of the second reduction disc, and the thrust ball bearing and the first main shaft bearing are parallel to each other.
5. The pendulum bead speed reducer of claim 1, wherein A second main shaft bearing is arranged between the eccentric shaft sleeve and the first cross swing disc, the second main shaft bearing is transversely sleeved on the outside of the eccentric shaft sleeve, and the second main shaft bearing is transversely located at the middle position of the first cross swing disc.
6. The pendulum bead speed reducer of claim 1, wherein A first end cover is arranged between the first shell and the second shell, the first end cover is transversely located at the top end of the first shell, the second shell is vertically arranged on the first end cover, the eccentric shaft sleeve vertically penetrates the first end cover, and the first reduction disc is transversely located on the first end cover; the second shell is provided with a second end cover, the second end cover is transversely located on the second shell, the output shaft penetrates the second end cover, and the output shaft rotates in the middle position of the second end cover.