Rotary speed reducer
By introducing a planar thrust bearing and a first support bearing into the rotary reducer, the problems of easy tilting of the worm gear and poor anti-overturning ability were solved, and the overturning load and radial load were increased without changing the external dimensions, thus enhancing the structural stability.
Patent Information
- Application Number
- CN202422957129.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-02
AI Technical Summary
In existing rotary reducers, the worm gear is prone to tilting and has poor anti-overturning ability.
A planar thrust bearing and a first support bearing are introduced into the rotary reducer, respectively located between the end face of the worm gear and the inner wall of the housing, and between the inner surface of the worm gear and the inner wall of the housing, to bear the overturning moment, radial force and axial force, thereby enhancing the structural stability.
Without changing the external dimensions of the reducer, the overturning load and radial load are increased, the risk of worm gear overturning is reduced, and the anti-overturning capability of the rotary reducer is enhanced.
Smart Images
Figure CN223690259U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of speed reducer, in particular to a rotary speed reducer. BACKGROUND
[0002] The rotary driver, also known as rotary speed reducer, is widely used in new energy solar light heat mirror array driving, solar photovoltaic power generation photovoltaic panel tracking driving, wind power yaw driving and other engineering machinery fields.
[0003] In the prior art, the rotary speed reducer has the problem of easy tilting of the worm gear and poor anti-overturning capability. CONTENT OF THE UTILITY MODEL
[0004] The purpose of the present application is to provide a rotary speed reducer to solve the problem of easy tilting of the worm gear and poor anti-overturning capability of the rotary speed reducer. The specific technical solution is as follows:
[0005] The present application provides a rotary speed reducer, comprising a box body, a worm gear, a worm, a base, a plane thrust bearing and a first support bearing. The box body has a worm gear cavity and a worm cavity. The worm gear is located in the worm gear cavity, and the worm is located in the worm cavity. The worm gear is engaged with the worm. The first end of the worm gear is fixedly connected with the base. The plane thrust bearing is arranged between the end face of the second end of the worm gear and the first inner wall of the box body. The first end and the second end are oppositely arranged along a first direction, and the first direction is the axial direction of the worm gear. The first support bearing is arranged between the inner surface of the worm gear and the second inner wall of the box body.
[0006] In some embodiments, the transmission ratio of the worm gear and the worm in the rotary speed reducer is i, and 50≤i≤70.
[0007] In some embodiments, i=60.
[0008] In some embodiments, the box body comprises an outer shell and a first connecting part arranged in the outer shell. The first inner wall is the inner wall of the outer shell, and the second inner wall is the outer side wall of the first connecting part.
[0009] In some embodiments, the first connecting part has a groove, and the rotary speed reducer further comprises a first locking nut. The first locking nut comprises a head and a rod part. The rod part can be matched with the groove, and part of the bottom end of the first support bearing abuts against the head of the first locking nut.
[0010] In some embodiments, the rotary speed reducer further comprises a sealing ring. The sealing ring is arranged between the side wall of the first end of the worm gear and the outer shell of the box body.
[0011] In some embodiments, the slewing reducer further comprises a first rotary oil seal, which is arranged between the side wall of the top of the base and the outer shell of the box.
[0012] In some embodiments, the slewing reducer further comprises two second support bearings, which are arranged in the worm cavity and respectively sleeved on two ends of the worm.
[0013] In some embodiments, the slewing reducer further comprises a motor, a planetary reducer and an eccentric sleeve, the motor is connected with the planetary reducer, the planet carrier of the planetary reducer is connected with one end of the worm, the motor rotates through the planet carrier of the planetary reducer to drive the worm to rotate, the eccentric sleeve is sleeved on the second support bearing, and the eccentric sleeve is located at the end of the worm away from the planetary reducer.
[0014] In some embodiments, the slewing reducer further comprises a dust cover, which is sleeved on the connection between the base and the box.
[0015] In the embodiments of the present application, the planar thrust bearing is arranged between the end face of the worm wheel and the first inner wall of the box, and is used to bear the overturning moment of the slewing reducer, the first support bearing is arranged between the inner surface of the worm wheel and the second inner wall of the box, and can bear the radial force and axial force of the meshing of the worm wheel and the worm and part of the overturning moment, so that the overturning load and the radial load can be improved and the risk of worm wheel overturning can be reduced without changing the size of the reducer.
[0016] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.
[0018] Figure 1 A cross-sectional view of the slewing reducer provided in the embodiments of the present application;
[0019] Figure 2 A cross-sectional view of the slewing reducer provided in the embodiments of the present application; Figure 1 A cross-sectional view of the slewing reducer provided in the embodiments of the present application;
[0020] Reference signs:
[0021] Housing 10; worm gear cavity 11; worm cavity 12; first inner wall 101; second inner wall 102; outer shell 13; first connecting part 14; groove 141; first locking nut 15; head 151; rod part 152; first bearing part 16; second bearing part 17; worm gear 21; flat key 201; first connecting hole 211; worm 22; second rotary oil seal 221; third support bearing 222; base 30; hollow inner hole 301; second connecting hole 31; planar thrust bearing 41; first support bearing 42; second support bearing 43; sealing ring 51; first rotary oil seal 52; planetary reducer 53; planetary carrier 530; planetary reducer mounting base 531; eccentric sleeve 54; dust cover 55; first sealing end cover 561; second sealing end cover 562; second locking nut 57; plug 59;
[0022] First direction X. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this application.
[0024] This application provides a rotary reducer, such as... Figure 1 and Figure 2 As shown, Figure 1 This is a cross-sectional view of a rotary reducer provided in an embodiment of this application; Figure 2 for Figure 1 A cross-sectional view at point AA. The rotary reducer includes: a housing 10, a worm gear 21, a worm 22, a base 30, a planar thrust bearing 41, and a first support bearing 42; the housing 10 has a worm gear cavity 11 and a worm shaft cavity 12, with the worm gear 21 located in the worm gear cavity 11 and the worm shaft 22 located in the worm shaft cavity 12, meshing with the worm gear 21; the first end of the worm gear 21 is fixedly connected to the base 30; the planar thrust bearing 41 is located between the end face of the second end of the worm gear 21 and the first inner wall 101 of the housing 10, with the first end and the second end positioned opposite each other along a first direction X, where the first direction X is the axial direction of the worm gear 21. Figure 1 In the middle, the first end is the lower end of the worm gear 21, and the second end is the upper end of the worm gear 21; the first support bearing 42 is located between the inner surface of the worm gear 21 and the second inner wall 102 of the housing 10.
[0025] In the embodiment of the present application, the planar thrust bearing 41 is arranged between the end face of the worm wheel 21 and the first inner wall 101 of the box body 10, and is used to bear the overturning moment of the rotary speed reducer. The first support bearing 42 is arranged between the inner surface of the worm wheel 21 and the second inner wall 102 of the box body 10, and can bear the radial force and axial force of the meshing of the worm wheel 21 and the worm 22, and part of the overturning moment. In this way, the overturning load and the radial load can be improved, and the risk of overturning of the worm wheel 21 can be reduced without changing the size of the speed reducer.
[0026] It should be noted that the base 30 is a fixed base, and the base 30 is fixedly connected with the worm wheel 21. Therefore, during the working process of the rotary speed reducer, the worm wheel 21 is fixed and cannot move. Since the worm wheel 21 is meshed with the worm 22, when the motor (not shown in the figure) drives the worm 22, the worm 22 rotates around the worm wheel 21. Since the worm is connected with the box body 10, the worm 22 can drive the box body 10 to rotate. The rotary speed reducer provided in the embodiment of the present application is suitable for a low-speed high-load rotary speed reducer.
[0027] Specifically, the worm wheel 21 and the base 30 can be connected through threads. Figure 1 As shown in the figure, the worm wheel 21 is provided with a first connecting hole 211, and the base 30 is provided with a second connecting hole 31. The first connecting hole 211 and the second connecting hole 31 are located opposite to each other, and a bolt passes through the first connecting hole and the second connecting hole to fixedly connect the worm wheel 21 and the base 30.
[0028] Specifically, the base 30 has a hollow inner hole 301. The rotary speed reducer further comprises a first sealing end cover 561, which is fixedly connected to the base and located in the hollow inner hole 301 of the base 30, and plays a role of sealing and dustproof.
[0029] More specifically, the planar thrust bearing 41 is a planar cylindrical thrust bearing.
[0030] In some embodiments of the present application, the transmission ratio of the worm wheel 21 and the worm 22 in the rotary speed reducer is i, and 50≤i≤70.
[0031] In some embodiments of the present application, i=60. In the embodiment of the present application, the transmission ratio i of the worm wheel 21 and the worm 22 in the rotary speed reducer is 60, which is the same as the number of minutes and seconds of time, and is convenient for external adjustment.
[0032] In some embodiments of the present application, the box body 10 comprises an outer shell 13 and a first connecting part 14 arranged in the outer shell 13. The first inner wall 101 is an inner wall of the outer shell 13, and the second inner wall 102 is an outer side wall of the first connecting part 14.
[0033] In the embodiment of the present application, as shown in the figure, Figure 1As shown, the first connecting portion 14 is arranged inside the shell 13, and extends towards the base 30, and the first supporting bearing 42 is sleeved on the outer side wall of the first connecting portion 14 close to the base 30, so that the radial force, axial force and partial overturning moment generated by the meshing of the worm wheel 21 and the worm 22 can be better borne.
[0034] In some embodiments of the present application, the first connecting portion 14 has a groove 141, and the rotary speed reducer further comprises a first locking nut 15, the first locking nut 15 comprising a head portion 151 and a rod portion 152, the rod portion 152 being capable of cooperating with the groove 141, and a portion of the bottom end of the first supporting bearing 42 abutting against the head portion 151 of the first locking nut 15.
[0035] In the embodiments of the present application, the rod portion 152 of the first locking nut 15 is screwed into the groove 141 of the first connecting portion 14, so as to press the first supporting bearing 42, thereby making the internal structure of the rotary speed reducer more stable and improving the reliability of the rotary speed reducer.
[0036] It should be noted that, as Figure 1 shown, the opening direction of the groove 141 of the first connecting portion 14 is towards the base 30.
[0037] Specifically, as Figure 2 shown, the rotary speed reducer further comprises a second locking nut 57 and a second sealing end cover 562; the second supporting bearing 43 away from the planetary reducer 53 is located in the eccentric sleeve 54, the box body 10 comprises a first bearing portion 16 and a second bearing portion 17, the planetary reducer 53 is located in the first bearing portion 16, the eccentric sleeve 54 is located in the second bearing portion 17, the second bearing portion 17 is provided with a threaded hole, the second locking nut 57 is arranged in the threaded hole, and the second sealing end cover 562 is arranged on the outer side of the second locking nut 57.
[0038] More specifically, the rotary speed reducer further comprises two plugs 59, and the two plugs 59 are arranged on the second bearing portion 17.
[0039] In some embodiments of the present application, as Figure 1 shown, the rotary speed reducer further comprises a sealing ring 51, and the sealing ring 51 is arranged between the side wall of the first end of the worm wheel 21 and the shell 13 of the box body 10.
[0040] In the embodiments of the present application, the sealing ring 51 can also be referred to as a packing sealing ring, and the sealing ring 51 is sleeved on the outer side wall of the first end of the worm wheel 21 and located between the worm wheel 21 and the box body 10, so that the external dust can be prevented from entering the worm wheel cavity 11 through the gap between the worm wheel 21 and the box body 10, and the cleanliness inside the worm wheel cavity 11 is ensured.
[0041] Specifically, the material of the sealing ring 51 can be, for example, an elastic material such as rubber.
[0042] In some embodiments of this application, the rotary reducer further includes a first rotary oil seal 52, which is disposed between the side wall of the top of the base 30 and the outer shell 13 of the housing 10.
[0043] In this embodiment of the application, by setting a first rotary oil seal 52 between the housing 10 and the base 30, dynamic sealing can be achieved, preventing external dust and other impurities from entering the inside of the housing 10 from between the housing 10 and the base 30 during the movement of the housing 10, ensuring the cleanliness of the inside of the housing 10, and preventing the leakage of lubricating oil inside the housing.
[0044] In some embodiments of this application, the rotary reducer further includes two second support bearings 43; the two second support bearings 43 are disposed within the worm cavity 12 and respectively sleeved on both ends of the worm 22. In the embodiments of this application, the two second support bearings 43 are respectively used to support both ends of the worm 22. Specifically, the first support bearing 42 and the second support bearing 43 can be tapered roller bearings or angular contact ball bearings.
[0045] In some embodiments of this application, the rotary reducer further includes a motor, a planetary reducer 53, and an eccentric sleeve 54. The motor is connected to the planetary reducer 53, and the planet carrier 530 of the planetary reducer 53 is connected to one end of the worm 22. The motor drives the planet carrier 530 of the planetary reducer 53 to rotate, thereby driving the worm 22 to rotate. The eccentric sleeve 54 is sleeved on the second support bearing 43, and the eccentric sleeve 54 is located at the end of the worm 22 away from the planetary reducer 53.
[0046] In this embodiment, the motor serves as a power device, and its output shaft is connected to the planetary reducer 53. When the motor's output shaft rotates, it drives the planetary reducer 53 to rotate. Since the planet carrier 530 of the planetary reducer 53 is connected to the worm gear 22, the planetary reducer 53 can drive the worm gear 22 to rotate. The worm gear 22 is connected to the housing 10, thus enabling the worm gear 22 to drive the housing 10 to rotate. The eccentric sleeve 54 is fitted onto the second support bearing 43, allowing the second support bearing 43 to withstand greater radial and axial loads during operation.
[0047] Specifically, such as Figure 2 As shown, the planetary reducer 53 is connected to the worm gear 22 via a flat key 201. The rotary reducer also includes a planetary reducer mounting base 531, which is fixedly connected to the end of the first bearing part 16, and the planetary reducer 53 is installed in the planetary reducer mounting base 531.
[0048] Specifically, such as Figure 2As shown, the rotary speed reducer further comprises a second rotary oil seal 221 and a third supporting bearing 222, the third supporting bearing 222 is sleeved on the outside of the planet carrier of the planetary reducer 53, and the second rotary oil seal 221 is sleeved on the planet carrier of the planetary reducer 53 and located on the side of the third supporting bearing 222 close to the second supporting bearing 43.
[0049] In some embodiments of the present application, as shown in Figure 1 As shown, the rotary speed reducer further comprises a dust cover 55, the dust cover 55 is sleeved on the connection between the base 30 and the box 10.
[0050] In the embodiments of the present application, since the dust cover 55 is sleeved on the connection between the base 30 and the box 10, dust and liquid can be prevented from entering the box 10, the cleanliness inside the box 10 is further improved, the service life of the oil seal is ensured to be longer, and the service life of the rotary speed reducer is further improved. Specifically, the dust cover 55 is fixed on the outer circle of the box and has relative movement with the base 30.
[0051] The above merely describes the preferred embodiments of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A slewing reducer characterized by, The utility model relates to a rotary speed reducer, including: Box (10), worm wheel (21), worm (22), base (30), plane thrust bearing (41), first support bearing (42); The box (10) has worm wheel cavity (11) and worm cavity (12) inside, the worm wheel (21) is located in worm wheel cavity (11), the worm (22) is located in the worm cavity (12), the worm wheel (21) is engaged with the worm (22), the first end of the worm wheel (21) is fixedly connected with the base (30); The plane thrust bearing (41) is arranged between the end face of the second end of the worm wheel (21) and the first inner wall (101) of the box (10), the first end and the second end are oppositely arranged along the first direction (X), and the first direction (X) is the axial direction of the worm wheel (21); The first support bearing (42) is arranged between the inner surface of the worm wheel (21) and the second inner wall (102) of the box (10).
2. The slewing reducer according to claim 1, characterized in that The transmission ratio of the worm wheel and the worm in the rotary speed reducer is i, and 50<=i<=70.
3. The slewing reducer according to claim 2, characterized in that i=60。 4. The slewing reducer according to claim 1, wherein The box (10) comprises an outer shell (13) and a first connecting portion (14) arranged in the outer shell (13), the first inner wall (101) is an inner wall of the outer shell (13), and the second inner wall (102) is an outer side wall of the first connecting portion (14).
5. The slewing reducer according to claim 4, characterized in that The first connecting portion (14) has a groove (141), the rotary speed reducer further comprises a first locking nut (15), the first locking nut (15) comprises a head portion (151) and a rod portion (152), the rod portion (152) can be matched with the groove (141), and the bottom end of the first support bearing (42) is in abutment with the head portion (151) of the first locking nut (15).
6. The slewing reducer according to claim 4, wherein The rotary speed reducer further comprises a sealing ring (51), and the sealing ring (51) is arranged between the side wall of the first end of the worm wheel (21) and the outer shell (13) of the box (10).
7. The slewing reducer according to claim 6, characterized in that The rotary speed reducer further comprises a first rotary oil seal (52), and the first rotary oil seal (52) is arranged between the side wall of the top of the base (30) and the outer shell (13) of the box (10).
8. The slewing reducer according to claim 1, wherein The rotary speed reducer further comprises two second support bearings (43), and the two second support bearings (43) are arranged in the worm cavity (12) and are sleeved on the two ends of the worm (22) respectively.
9. The slewing reducer according to claim 8, characterized in that The rotary speed reducer further comprises a motor, a planetary reducer (53) and an eccentric sleeve (54), the motor is connected with the planetary reducer (53), a planet carrier (530) of the planetary reducer (53) is connected with one end of the worm (22), the motor rotates through the planet carrier (530) of the planetary reducer (53), and then drives the worm (22) to rotate, the eccentric sleeve (54) is sleeved on the second support bearing (43), and the eccentric sleeve (54) is located at the end, away from the planetary reducer (53), of the worm (22).
10. The slewing reducer according to any one of claims 1-9, characterized in that The slewing reducer further comprises a dustproof cover (55) sleeved at the connecting position of the base (30) and the box (10).