Integrated speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to an integrated speed reducer. The integrated speed reducer comprises a worm gear, a worm, an output shaft, a worm gear shaft and a planetary gear speed reducing mechanism, the worm gear is coaxially arranged on the worm gear shaft, the worm gear comprises a plurality of cylindrical rollers which are evenly arranged around the axis of the worm gear, and the tooth surface of the worm is meshed with the rollers; the planetary gear speed reduction mechanism comprises a sun gear, the sun gear is connected with one end of the worm wheel shaft, and the output end of the planetary gear speed reduction mechanism is connected with the output shaft and used for driving the output shaft to rotate. Compared with a traditional worm and gear speed reducer, the integrated speed reducer adopts a two-stage speed reduction mode, so that the bearing capacity of the integrated speed reducer is effectively improved, heavy-load equipment can be easily started, and the purpose of large-torque and large-speed-ratio output is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to an integrated speed reducer. Background Art

[0002] In situations where low-speed, high-torque transmission is required, such as when starting equipment with a heavy load, a high-torque reduction motor is needed to provide sufficient starting torque. The speed ratio of a reducer is directly proportional to its torque: the larger the reduction ratio, the greater the output torque; conversely, the smaller the reduction ratio, the smaller the output torque.

[0003] Current worm gear reducers primarily consist of a worm wheel and a worm, utilizing the meshing between the worm wheel and the worm to achieve deceleration. This only relies on the meshing between the worm wheel and the worm to achieve primary deceleration, limiting their load-bearing capacity. While they can withstand heavy loads to a certain extent, their transmission method prevents them from easily starting heavy-load equipment. Utility Model Content

[0004] (1) The problem to be solved by the present invention is that although the current worm gear reducer can withstand a large load to a certain extent, its transmission mode determines that it cannot easily start large-load equipment.

[0005] (2) Technical solution

[0006] An integrated reducer includes a worm wheel, a worm, an output shaft, a worm wheel shaft and a planetary gear reduction mechanism, wherein the worm wheel is coaxially arranged on the worm wheel shaft, the worm wheel includes a plurality of cylindrical rollers, and the plurality of rollers are evenly arranged around the axis of the worm wheel, and the tooth surface of the worm is meshed with the rollers; the planetary gear reduction mechanism includes a sun wheel, which is connected to one end of the worm wheel shaft, and the output end of the planetary gear reduction mechanism is connected to the output shaft for driving the output shaft to rotate.

[0007] According to one embodiment of the present invention, the planetary gear reduction mechanism includes a ring gear, a planet carrier and a plurality of planetary gears, wherein the plurality of planetary gears are arranged between the ring gear and the sun gear, and the planetary gears are meshed with the ring gear and the sun gear at the same time, and the plurality of planetary gears are connected by the planet carrier;

[0008] The output shaft is connected to the planet carrier.

[0009] According to one embodiment of the present invention, the integrated reducer includes an outer shell and a lower shell, the lower shell is connected to the outer shell, the worm shaft, the output shaft and the planetary gear reduction mechanism are all arranged in the outer shell, and the worm is arranged in the lower shell.

[0010] According to one embodiment of the present invention, the shell has an installation cavity inside, and a first opening and a second opening are respectively provided on two opposite sides of the shell, and the first opening and the second opening are both connected to the installation cavity; a through hole is coaxially opened on the worm gear shaft, and a circular hole is coaxially opened on the sun gear, and the through hole and the circular hole are coaxially arranged; the output shaft includes shaft one and shaft two, one end of shaft one is fixedly connected to the planetary carrier, and the other end thereof extends from the second opening, and the shaft two is arranged in the through hole on the worm gear shaft, and one end of shaft two is connected to the planetary carrier, and the other end thereof extends from the first opening.

[0011] According to one embodiment of the present utility model, a first bearing seat is installed on the inner wall of the first opening of the housing, a first bearing is provided on the inner wall of the first bearing seat, the first bearing is cooperatively connected with the worm gear shaft, a first oil seal is provided on the end of the second shaft away from the first shaft, and a first oil seal end cover is provided on the first bearing seat.

[0012] According to one embodiment of the present invention, a second bearing seat is installed on the inner wall of the second opening of the shell, a second bearing is installed on the inner wall of the second bearing seat, the second bearing is cooperatively connected with the shaft one, a second oil seal is sleeved on the shaft one, and a second oil seal end cover is provided in the second bearing seat.

[0013] According to one embodiment of the present utility model, the lower shell has a cavity, the worm is arranged in the cavity, and a first port and a second port are respectively provided on two opposite side surfaces of the lower shell, and the input end of the worm passes through the first port; a third bearing and a fourth bearing are respectively provided on the inner walls of the first port and the second port, and the third bearing and the fourth bearing are both cooperated and connected with the worm.

[0014] According to one embodiment of the present utility model, a third bearing seat is provided on the inner wall of the first port of the lower shell body, the third bearing is arranged in the third bearing seat, a third oil seal is sleeved on the input end of the worm gear, the third oil seal is in contact with the inner wall of the third bearing seat, and a third oil seal end cover is provided on the inner wall of the first opening of the lower shell body.

[0015] According to one embodiment of the present invention, a fourth bearing is provided on the inner wall of the second port of the lower housing, the fourth bearing is cooperatively connected with the worm, and a sealing end cover is provided on the inner wall of the second port.

[0016] According to one embodiment of the present utility model, a pipe fitting is provided on the side of the planetary gear reduction mechanism away from the first opening, an outer bearing is provided on the inner wall of the outer shell, the outer bearing is cooperatively connected to the pipe fitting, an inner bearing is provided on the inner wall of the pipe fitting, and the inner bearing is cooperatively connected to the worm gear shaft.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides an integrated reducer, including a worm wheel, a worm, an output shaft, a worm wheel shaft and a planetary gear reduction mechanism. The worm wheel is coaxially arranged on the worm wheel shaft. The worm wheel includes a plurality of cylindrical rollers. The plurality of rollers are evenly arranged around the axis of the worm wheel. The tooth surfaces of the worm are meshed with the rollers. The planetary gear reduction mechanism includes a sun wheel, which is connected to one end of the worm wheel shaft. The output end of the planetary gear reduction mechanism is connected to the output shaft for driving the output shaft to rotate.

[0019] The input end of the integrated reducer drives the worm to rotate, and the tooth surface on the worm and the roller on the worm wheel cooperate to drive the worm wheel to rotate. The worm wheel and the worm wheel shaft rotate, and the worm wheel shaft drives the sun gear to rotate. The sun gear rotates to drive multiple planetary gears to rotate. Multiple planetary gears are connected to the planetary carrier on the planetary gear reduction mechanism. Since the output shaft of the reducer is connected to the output end of the planetary gear reduction mechanism, it can drive the output shaft to rotate.

[0020] Unlike traditional worm gears, the worm wheel in this embodiment is provided with a plurality of cylindrical rollers, and the worm is provided with tooth surfaces that match the rollers. The cylindrical rollers on the worm wheel and the tooth surfaces on the worm are used in conjunction with each other as a first-stage reduction, and compared with traditional worm gears, it has the following advantages: First, the transmission efficiency of the cylindrical roller worm gear is high, generally reaching more than %, and the energy loss is relatively low. Second, it has a high load-bearing capacity and can withstand large forces and torques, and is suitable for occasions requiring high-intensity transmission. Therefore, using a cylindrical roller worm gear to replace the traditional worm gear can improve the transmission efficiency and load-bearing capacity of the reducer, and can be applied to various heavy-load conditions.

[0021] Secondly, using a planetary reducer as a secondary reduction mechanism can further reduce the speed of the reducer output shaft and increase the speed ratio and torque of the reducer.

[0022] Therefore, compared with the traditional worm gear reducer, this integrated reducer adopts a two-stage reduction method, which effectively improves its load-bearing capacity, allowing it to easily start large-load equipment and achieve the purpose of high torque and high speed ratio output. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A first stereogram provided for an embodiment of the present utility model;

[0025] Figure 2 A second perspective view provided for an embodiment of the present utility model;

[0026] Figure 3 A front view of an embodiment of the present utility model;

[0027] Figure 4 The embodiment of the present invention provides Figure 3 Cross-sectional view of AA;

[0028] Figure 5 A side view provided for an embodiment of the present utility model;

[0029] Figure 6 The embodiment of the present invention provides Figure 5 Cross-sectional view of the BB.

[0030] Icons: 1. Housing; 2. Worm gear; 201. Worm gear shaft; 3. Output shaft; 301. Shaft 1; 302. Shaft 2; 4. Planetary gear reduction mechanism; 401. Planetary gear; 402. Ring gear; 403. Sun gear; 5. Outer bearing; 6. Inner bearing; 7. First bearing; 8. First oil seal end cover; 9. First oil seal; 10. First bearing seat; 11. Second bearing seat; 12. Second bearing; 13. Second oil seal; 14. Lower housing; 15. Worm; 16. Third bearing seat; 17. Third bearing; 18. Third oil seal; 19. Seal end cover; 20. Fourth bearing; 21. Second oil seal end cover. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1-6As shown, an embodiment of the present invention provides an integrated reducer, including a worm wheel 2, a worm 15, an output shaft 3, a worm wheel shaft 201 and a planetary gear reduction mechanism 4, wherein the worm wheel 2 is coaxially arranged on the worm wheel shaft 201, and the worm wheel 2 includes a plurality of cylindrical rollers, which are evenly arranged around the axis of the worm wheel 2, and the tooth surfaces of the worm 15 are meshed with the rollers; the planetary gear reduction mechanism 4 includes a sun gear 403, which is connected to one end of the worm wheel shaft 201, and the output end of the planetary gear reduction mechanism 4 is connected to the output shaft 3 for driving the output shaft 3 to rotate.

[0033] The input end of the integrated reducer in this embodiment drives the worm 15 to rotate, and the tooth surface on the worm 15 and the roller on the worm wheel 2 cooperate to drive the worm wheel 2 to rotate, and the worm wheel 2 and the worm wheel shaft 201 rotate, and the worm wheel shaft 201 drives the sun gear 403 to rotate, and the sun gear 403 rotates to drive multiple planetary gears 401 to rotate. The multiple planetary gears 401 are connected to the planetary carrier on the planetary gear reduction mechanism 4. Since the output shaft 3 of the reducer is connected to the output end of the planetary gear reduction mechanism 4, it can drive the output shaft 3 to rotate accordingly.

[0034] Unlike traditional worm gears, the worm wheel 2 in this embodiment is equipped with multiple cylindrical rollers, and the worm 15 has tooth surfaces that match the rollers. The cylindrical rollers on the worm wheel 2 and the tooth surfaces on the worm 15 work together to form a primary reduction gear. Compared with traditional worm gears, this embodiment offers the following advantages: First, the cylindrical roller worm gear has high transmission efficiency, generally exceeding 90%, and low energy loss. Second, it has a high load-bearing capacity, capable of withstanding large forces and torques, making it suitable for applications requiring high-intensity transmission.

[0035] Therefore, using a cylindrical roller worm gear to replace the traditional worm gear can improve the transmission efficiency and load-bearing capacity of the reducer and can be applied to various heavy-load working conditions.

[0036] Secondly, in this embodiment, the planetary reducer is used as the secondary reduction mechanism, which can further reduce the rotation speed of the reducer output shaft 3 and increase the speed ratio and torque of the reducer.

[0037] Therefore, compared with the traditional worm gear reducer, the integrated reducer in this embodiment adopts a two-stage reduction method, which effectively improves its load-bearing capacity, allowing it to easily start large-load equipment and achieve the purpose of high torque and high speed ratio output.

[0038] As a preferred embodiment, Figure 1 and Figure 2 As shown, the integrated reducer includes a housing 1 and a lower housing 14. The housing 1 is cylindrical, and the lower housing 14 is tubular. The lower housing 14 is connected to the side wall of the housing 1. Figure 4 As shown, the housing 1 has an installation cavity inside, and a second opening and a first opening are respectively provided on the left side and the right side of the housing 1. The first opening and the second opening are both connected to the installation cavity. The planetary gear reduction mechanism 4 and the worm shaft 201 are sequentially arranged in the installation cavity, and the planetary gear reduction mechanism 4 and the worm shaft 201 are coaxially arranged.

[0039] Furthermore, the planetary gear reduction mechanism 4 includes a main frame, a ring gear 402, a sun gear 403, a planet carrier, and multiple planetary gears 401. The ring gear 402 is mounted on the inner wall of the main frame, and the main frame is coaxially arranged in the mounting cavity. The multiple planetary gears 401 are arranged between the ring gear 402 and the sun gear 403, and the planetary gears 401 are simultaneously meshed with the ring gear 402 and the sun gear 403. The left sides of the multiple planetary gears 401 are connected by the planet carrier, and the left end of the worm gear shaft 201 is fixedly connected to the right side of the sun gear 403. Preferably, the worm gear shaft 201 and the sun gear 403 are connected by welding.

[0040] Furthermore, a through hole is coaxially opened on the worm gear shaft 201, and a circular hole is opened on the sun gear 403, and the through hole on the worm gear shaft 201 and the circular hole on the sun gear 403 are coaxial; the output shaft 3 includes shaft one 301 and shaft two 302, and shaft one 301 and shaft two 302 are coaxially arranged, wherein the right end of shaft one 301 is welded and fixed to the left end face of the planetary carrier, and the left end of shaft one 301 extends from the second opening of the housing 1, and shaft two 302 is arranged in the through hole on the worm gear shaft 201, and the left end of shaft two 302 passes through the circular hole of the sun gear 403 and is welded to the right end face of the planetary carrier, and the right end of shaft two 302 extends from the first opening of the housing 1.

[0041] It should be noted that the left end of shaft 1 301 and the right end of shaft 2 302 respectively constitute the output ends of the reducer, that is, the integrated reducer has two output ends.

[0042] It should be noted that the planetary gear reduction mechanism 4 differs from conventional planetary gear reduction mechanisms only in that a shaft hole for the second shaft 302 is provided on the sun gear 403. In this way, conventional planetary gear reduction mechanisms on the market can be used by simply modifying them.

[0043] In this way, when the worm 15 drives the worm wheel 2 to rotate, the worm wheel 2 drives the worm wheel shaft 201 to rotate. Since the left end of the worm wheel shaft 201 is fixedly connected to the right side of the sun gear 403, it can drive the sun gear 403 to rotate. The sun gear 403 drives multiple planetary gears 401 to continuously rotate around the ring gear 402, thereby driving the planetary carrier to rotate. Since both shaft 1 301 and shaft 2 302 are connected to the planetary carrier, the planetary carrier drives shaft 1 301 and shaft 2 302 to rotate together.

[0044] As a preferred embodiment, Figure 4 As shown, a first bearing seat 10 is installed on the inner wall of the first opening of the housing 1. A first bearing 7 is provided on the inner wall of the first bearing seat 10. The first bearing 7 is connected to the right end of the worm shaft 201. The first bearing 7 supports the worm shaft 201.

[0045] Furthermore, a first oil seal 9 is sleeved on the right end of the second shaft 302 , and a first oil seal end cover 8 is installed between the inner wall of the first bearing seat 10 and the first oil seal 9 .

[0046] Further, such as Figure 4 As shown, an outer bearing 5 is coaxially provided on the inner wall of the mounting cavity, and a pipe fitting is provided on the right side of the main frame of the planetary gear reduction mechanism 4. The pipe fitting is connected with the inner ring of the outer bearing 5, and an inner bearing 6 is provided on the inner wall of the pipe fitting. The outer ring of the inner bearing 6 is connected to the inner wall of the pipe fitting, and the left end of the worm shaft 201 is connected with the inner bearing 6. The inner bearing 6 supports the left end of the worm shaft 201.

[0047] As a preferred embodiment, a second bearing seat 11 is mounted on the inner wall of the second opening on the left side of the housing 1. A second bearing 12 is mounted on the inner wall of the second bearing seat 11. The second bearing 12 is matingly connected to the first shaft 301. Furthermore, a second oil seal 13 is sleeved on the first shaft 301, and a second oil seal end cap 21 is provided between the inner wall of the second bearing seat 11 and the second oil seal 13.

[0048] Preferably, Figure 5 and Figure 6 As shown, the lower shell 14 has a cavity, and the worm 15 is arranged in the cavity. The right side and the left side of the lower shell 14 are respectively provided with a first port and a second port, and the input end of the worm 15 passes through the first port; a third bearing seat 16 is provided on the inner wall of the first port, and a third bearing 17 is installed on the inner wall of the third bearing seat 16. Furthermore, a fourth bearing 20 is installed on the inner wall of the second port of the lower shell 14. The third bearing 17 and the fourth bearing 20 are both connected with the worm 15 to support the worm 15.

[0049] As a preferred embodiment, a third oil seal 18 is provided on the input end of the worm 15, and the third oil seal 18 contacts the inner wall of the third bearing seat 16. A third oil seal end cover is installed on the first opening of the lower shell 14, and a sealing end cover 19 is provided on the inner wall of the second port.

[0050] In the description of this utility model, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated reducer, characterized in that: The invention comprises a worm wheel (2), a worm (15), an output shaft (3), a worm wheel shaft (201) and a planetary gear reduction mechanism (4), wherein the worm wheel (2) is coaxially arranged on the worm wheel shaft (201), the worm wheel (2) comprises a plurality of cylindrical rollers, the plurality of rollers are evenly arranged around the axis of the worm wheel (2), and the tooth surfaces of the worm (15) are meshed with the rollers; the planetary gear reduction mechanism (4) comprises a sun wheel (403), the sun wheel (403) is connected to one end of the worm wheel shaft (201), and the output end of the planetary gear reduction mechanism (4) is connected to the output shaft (3) for driving the output shaft (3) to rotate.

2. The integrated reducer according to claim 1, characterized in that: The planetary gear reduction mechanism (4) comprises a ring gear (402), a planet carrier, and a plurality of planetary wheels (401), wherein the plurality of planetary wheels (401) are arranged between the ring gear (402) and the sun gear (403), and the planetary wheels (401) are meshed with the ring gear (402) and the sun gear (403) at the same time, and the plurality of planetary wheels (401) are connected via the planet carrier; The output shaft (3) is connected to the planet carrier.

3. The integrated reducer according to claim 2, characterized in that: The integrated speed reducer comprises a housing (1) and a lower housing (14), wherein the lower housing (14) is connected to the housing (1), the worm shaft (201), the output shaft (3) and the planetary gear speed reduction mechanism (4) are all arranged in the housing (1), and the worm (15) is arranged in the lower housing (14).

4. The integrated reducer according to claim 3, characterized in that: The housing (1) has an installation cavity inside, and a first opening and a second opening are respectively provided on two opposite side surfaces of the housing (1), and the first opening and the second opening are both connected to the installation cavity; a through hole is coaxially provided on the worm gear shaft (201), and a circular hole is coaxially provided on the sun gear (403), and the through hole and the circular hole are coaxially arranged; the output shaft (3) includes a first shaft (301) and a second shaft (302), one end of the first shaft (301) is fixedly connected to the planetary frame, and the other end thereof extends from the second opening, and the second shaft (302) is arranged in the through hole on the worm gear shaft (201), and one end of the second shaft (302) is connected to the planetary frame, and the other end thereof extends from the first opening.

5. The integrated reducer according to claim 4, characterized in that: A first bearing seat (10) is mounted on the inner wall of the first opening of the housing (1), a first bearing (7) is provided on the inner wall of the first bearing seat (10), the first bearing (7) is cooperatively connected to the worm gear shaft (201), a first oil seal (9) is sleeved on the end of the second shaft (302) away from the first shaft (301), and a first oil seal end cover (8) is provided on the first bearing seat (10).

6. The integrated reducer according to claim 4, characterized in that: A second bearing seat (11) is mounted on the inner wall of the second opening of the housing (1), a second bearing (12) is mounted on the inner wall of the second bearing seat (11), the second bearing (12) is cooperatively connected to the first shaft (301), a second oil seal (13) is sleeved on the first shaft, and a second oil seal end cover (21) is provided in the second bearing seat (11).

7. The integrated reducer according to claim 5, characterized in that: The lower housing (14) has a cavity therein, and the worm (15) is arranged in the cavity. A first port and a second port are respectively provided on two opposite side surfaces of the lower housing (14), and the input end of the worm (15) passes through the first port; a third bearing (17) and a fourth bearing (20) are respectively provided on the inner walls of the first port and the second port, and the third bearing (17) and the fourth bearing (20) are both matched and connected with the worm (15).

8. The integrated reducer according to claim 7, characterized in that: A third bearing seat (16) is provided on the inner wall of the first port of the lower housing (14), the third bearing (17) is arranged in the third bearing seat (16), a third oil seal (18) is sleeved on the input end of the worm (15), the third oil seal (18) is in contact with the inner wall of the third bearing seat (16), and a third oil seal end cover is provided on the inner wall of the first opening of the lower housing (14).

9. The integrated reducer according to claim 7, characterized in that: A fourth bearing (20) is provided on the inner wall of the second port of the lower housing (14), the fourth bearing (20) being cooperatively connected to the worm (15), and a sealing end cover (19) is provided on the inner wall of the second port.

10. The integrated reducer according to claim 4, characterized in that: A tube is provided on the side of the planetary gear reduction mechanism (4) away from the first opening, an outer bearing (5) is provided on the inner wall of the housing (1), the outer bearing (5) is cooperatively connected to the tube, an inner bearing (6) is provided on the inner wall of the tube, and the inner bearing (6) is cooperatively connected to the worm gear shaft (201).

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