Integrated shaft type right-angle planetary reducer

Abstract

The utility model discloses an integrated shaft type right-angle planetary reducer which comprises a machine shell, a first-stage speed reducing mechanism and a second-stage speed reducing mechanism, the first-stage speed reducing mechanism and the second-stage speed reducing mechanism are used for speed reduction, and the first-stage speed reducing mechanism and the second-stage speed reducing mechanism are both arranged in the machine shell. According to the integrated shaft type right-angle planetary reducer, the first-stage speed reducer achieves speed reduction through tooth number difference matching of a main transmission gear shaft and a driven spiral bevel gear, the interior of the driven spiral bevel gear is kept stable through a center shaft, and the second-stage speed reducer achieves speed reduction through matching of a planet shaft, a planet gear, a sun gear and a planet carrier; the speed reducer has the advantages of being high in speed reduction transmission stability, high in rotating speed, low in torque input, low in rotating speed and large in torque output, free of over-positioning in overall installation, high in safety coefficient, high in working efficiency, high in bearing capacity and suitable for large-capacity stirrers.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically an integrated shaft right-angle planetary speed reducer. Background Technology

[0002] Twin-shaft mixers are generally forced-action mixers, suitable for various large, medium, and small precast component factories, as well as industrial and civil construction projects such as highways, bridges, water conservancy, and docks. They can mix dry-hard concrete, plastic concrete, fluid concrete, lightweight aggregate concrete, and various mortars, and are a one-piece shaft type. A geared motor, through a coupling, causes the mixing shaft to rotate in one direction. Two sets of blades on the mixing shaft agitate the material, ensuring thorough mixing and achieving a satisfactory mixing effect. However, most gearboxes currently available cannot meet the mixer's requirements for low-speed, high-stability, and high-torque output.

[0003] Patent CN220634126U discloses a transmission device for a twin-shaft mixer, including a mixing shaft with a bushing mounted on its end. The bushing has an expansion sleeve at its outer diameter, connected to a universal bearing mounted on a reducer. The reducer has a driven pulley, a lower motor mount on its upper part, and an upper motor mount on top of the lower motor mount. The upper and lower motor mounts are hinged together by a shaft. The lower motor mount is connected to an adjusting screw via a pin, with the upper end of the adjusting screw passing through the upper motor mount and secured by a nut. A motor is mounted on the upper motor mount, and a drive pulley is mounted on the motor. The driven pulley and drive pulley are connected by a transmission belt. This device simplifies assembly and improves maintenance convenience by improving the transmission belt tensioning structure. However, while the patent simplifies the structure to some extent, its design does not specifically optimize the reducer's performance in low-speed, high-stability, and high-torque output. In addition, the device in this patent has limitations in terms of space utilization and load-bearing capacity. It fails to make full use of space and may not be able to provide sufficient load-bearing capacity when handling large quantities of materials. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated shaft right-angle planetary reducer, which solves the problem that most current reducers cannot meet the output requirements of mixers for low speed, high stability, and high torque.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated shaft right-angle planetary reducer, comprising a housing, a primary reduction mechanism and a secondary reduction mechanism for reducing speed, wherein both the primary reduction mechanism and the secondary reduction mechanism are disposed inside the housing;

[0006] The housing includes a first external hexagonal bolt, a first internal hexagonal head screw, a first flat washer, a front housing upper end cover, a first O-ring, a screw, a second flat washer, a front housing, a G three-eighths plug aluminum washer, a three-eighths plug, a second O-ring, a second external hexagonal bolt, a half-plug, a G half-plug aluminum washer, a hexagonal thin nut, a first spring washer, a heavy-duty lifting lug, a middle housing, a third O-ring, a gear ring, a second internal hexagonal head screw, a reinforced rear housing, a fourth O-ring, a rear housing end cover, a third flat washer, a second spring washer, a fourth internal hexagonal head screw, and a skeleton oil seal. The first external hexagonal bolt is fitted with a first flat washer and installed on the lower left side of the front housing. The upper end cap of the front housing is installed to the left end of the first external hexagonal bolt using a first internal hexagonal head screw. A first O-ring seal is placed between the upper end cap of the front housing and the first external hexagonal bolt. The screw is fitted with a second flat washer and installed on the upper left side of the front housing. A three-eighths plug is fitted with a G-type three-eighths plug aluminum washer and installed in a hole on the left side of the front housing surface. The second external hexagonal bolt is fitted with a first flat washer. The second external hexagonal bolt is installed on the front housing... The middle housing is installed on the right side of the front housing via a second flat washer and a second external hex bolt. A second O-ring seal is positioned in the gap between the front and middle housings. A G-type half-end plug aluminum washer is fitted over the half-end plug, which is then installed into a hole on the front surface of the front housing. A third O-ring seal is positioned in the gap between the middle housing and the gear ring, and in the gap between the gear ring and the reinforced rear housing. The drive mechanism is secured via a nut, a first spring washer, a second internal hex head screw, a third internal hex head screw, and a locating screw. The reinforced rear housing, gear ring, and middle housing are installed. The left end of the third internal hexagonal head screw extends to the left side of the middle housing. The heavy-duty lifting lug is fixed to the left end of the third internal hexagonal head screw by the cooperation of the hexagonal thin nut and the first spring washer. The cylindrical pin is inserted between the middle housing and the reinforced rear housing to provide auxiliary limiting and fixing of the gear ring. The skeleton oil seal is installed inside the right end of the rear housing end cover. The rear housing end cover is installed on the right end face of the reinforced rear housing by the cooperation of the fourth internal hexagonal head screw, the second spring washer, and the third flat washer. A fourth O-ring seal is provided between the rear housing end cover and the reinforced rear housing for sealing.

[0007] The first-stage reduction mechanism includes a main drive gear shaft, a driven spiral bevel gear, and a central shaft. The main drive gear shaft is installed in the vertical shaft hole at the bottom of the front housing via a bearing bracket. The central shaft is installed in the horizontal shaft hole of the front housing via a bearing bracket. The driven spiral bevel gear is engaged with the outside of the central shaft. The left bevel gear of the driven spiral bevel gear meshes with the top bevel gear of the main drive gear shaft.

[0008] The secondary reduction mechanism includes a gear ring, planetary shaft, planetary gears, a sun gear, and a planet carrier. The sun gear is installed inside the gear ring, with its left end mounted to the right end of the central shaft. The planetary gears are located inside the gear ring and outside the sun gears, meshing with both the sun gear and the gear ring. The planetary shaft is inserted into the axis of the planetary gears. The planet carrier is mounted inside the reinforced rear housing via a bearing bracket, with its right end inserted into the left end face of the planet carrier.

[0009] Preferably, the main drive gear shaft has 10 teeth, a large end face module of 6.54 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42 mm, and an installation distance of 120 mm.

[0010] Preferably, the passive spiral bevel gear has 35 teeth, a large end face module of 6.54 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42 mm, and an installation distance of 57.2 mm.

[0011] Preferably, the stellar gear has 11 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 97.54 mm, and a center distance of 78.5 mm.

[0012] Preferably, the planetary gear has 22 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 64 mm, and a center distance of 78.5 mm.

[0013] Preferably, the gear ring has 58 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 60 mm, and a center distance of 170 mm.

[0014] Compared with the prior art, this utility model provides an integrated shaft right-angle planetary reducer, which has the following beneficial effects:

[0015] 1. This integrated shaft-type right-angle planetary reducer achieves speed reduction in the first stage by using the difference in the number of teeth between the main drive gear shaft and the driven spiral bevel gear. The driven spiral bevel gear is kept stable by the central shaft. The second stage reducer achieves speed reduction through the cooperation of the planetary shaft, planetary gears, sun gear, and planet carrier. It has high speed reduction transmission stability and features high speed and low torque input, and low speed and high torque output. The overall installation is free from over-positioning, has a high safety factor, high working efficiency, and strong load-bearing capacity, making it suitable for large-capacity mixers.

[0016] 2. This integrated shaft right-angle planetary reducer has a right-angle transmission between the power input end and the power output end, which can reduce the space occupied during installation, increase the space utilization rate, and thus improve the scope of application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly cross-sectional structure of an integrated shaft right-angle planetary reducer according to the present invention;

[0018] Figure 2 This is an exploded view of the outer casing structure of the integrated shaft right-angle planetary reducer described in this utility model.

[0019] The markings in the attached diagram are described below:

[0020] 1. First external hex bolt; 2. First internal hex socket head cap screw; 3. First flat washer; 4. Front housing upper end cap; 5. First O-ring seal; 6. Screw; 7. Second flat washer; 8. Front housing; 9. G three-eighths plug aluminum washer; 10. Three-eighths plug; 11. Second O-ring seal; 12. Second external hex bolt; 13. Half plug; 14. G half plug aluminum washer; 15. Hexagonal thin nut; 16. First spring washer; 17. Heavy-duty lifting lug; 8. Middle housing; 19. Third O-ring seal; 20. Gear ring; 21. Second internal hexagonal head screw; 22. Reinforced rear housing; 23. Fourth O-ring seal; 24. Rear housing end cap; 25. Third flat washer; 26. Second spring washer; 27. Fourth internal hexagonal head screw; 28. Skeleton oil seal; 41. Main drive gear shaft; 42. Driven spiral bevel gear; 43. Central shaft; 44. Planetary shaft; 45. Planetary gear; 46. Star gear; 47. Planet carrier. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-2 This utility model provides an integrated shaft right-angle planetary reducer, including a housing, a first-stage reduction mechanism and a second-stage reduction mechanism for reducing speed, wherein the first-stage reduction mechanism and the second-stage reduction mechanism are both disposed inside the housing;

[0023] The housing includes a first external hex bolt 1, a first internal hex socket head cap screw 2, a first flat washer 3, a front housing upper end cap 4, a first O-ring seal 5, a screw 6, a second flat washer 7, a front housing 8, a G three-eighths plug aluminum washer 9, a three-eighths plug 10, a second O-ring seal 11, a second external hex bolt 12, a half-plug 13, a G half-plug aluminum washer 14, a hexagonal thin nut 15, a first spring washer 16, a heavy-duty lifting lug 17, a middle housing 18, a third O-ring seal 19, a gear ring 20, a second internal hex socket head cap screw 21, a reinforced rear housing 22, a fourth O-ring seal 23, a rear housing end cap 24, a third flat washer 25, a second spring washer 26, and a fourth internal hex socket head cap screw. The first external hexagonal bolt 1 is fitted with a first flat washer 3 and installed on the lower left side of the front housing 8. The upper end cover 4 of the front housing is installed to the left end of the first external hexagonal bolt 1 by a first internal hexagonal head screw 2. A first O-ring 5 for sealing is set between the upper end cover 4 of the front housing and the first external hexagonal bolt 1. The screw 6 is fitted with a second flat washer 7 and installed on the upper left side of the front housing 8. The three-eighths plug 10 is fitted with a G three-eighths plug aluminum washer 9 and installed in the hole on the left side of the surface of the front housing 8. The second external hexagonal bolt 12 is fitted with a first flat washer 3 and installed on the left side of the front housing 8. The middle housing 18 is installed on the right side of the front housing 8 through the cooperation of the second flat washer 7 and the second external hex bolt 12. The second O-ring seal 11 for sealing is set in the gap between the front housing 8 and the middle housing 18. The half-end plug 13 is fitted with a half-end plug aluminum washer 14 on the outside. The half-end plug 13 is installed with the hole on the front surface of the front housing 8. The third O-ring seal 19 is set in the gap between the middle housing 18 and the gear ring 20. The third O-ring seal 19 is set in the gap between the gear ring 20 and the reinforced rear housing 22. The reinforced rear housing for driving is connected by the cooperation of the nut, the first spring washer 16, the second internal hex head screw 21, the third internal hex head screw and the positioning screw. The body 22, gear ring 20 and middle housing 18 are installed. The left end of the third internal hexagonal head screw extends to the left side of the middle housing 18. The heavy lifting lug 17 is fixed to the left end of the third internal hexagonal head screw by the cooperation of the hexagonal thin nut 15 and the first spring washer 16. The cylindrical pin is inserted between the middle housing 18 and the reinforced rear housing 22 to provide auxiliary limiting and fixing of the gear ring 20. The skeleton oil seal 28 is installed inside the right end of the rear housing end cover 24. The rear housing end cover 24 is installed on the right end face of the reinforced rear housing 22 by the cooperation of the fourth internal hexagonal head screw 27, the second spring washer 26 and the third flat washer 25. A fourth O-ring seal 23 for sealing is provided between the rear housing end cover 24 and the reinforced rear housing 22.

[0024] The first-stage reduction mechanism includes a main drive gear shaft 41, a driven spiral bevel gear 42, and a central shaft 43. The main drive gear shaft 41 is mounted in the bottom vertical shaft hole of the front housing 8 through a bearing bracket. The central shaft 43 is mounted in the transverse shaft hole of the front housing 8 through a bearing bracket. The driven spiral bevel gear 42 is engaged with the outside of the central shaft 43. The left bevel gear of the driven spiral bevel gear 42 meshes with the top bevel gear of the main drive gear shaft 41.

[0025] The secondary reduction mechanism includes a gear ring 20, a planetary shaft 44, a planetary gear 45, a sun gear 46, and a planet carrier 47. The sun gear 46 is installed inside the gear ring 20, with its left end connected to the right end of the central shaft 43. The planetary gear 45 is located inside the gear ring 20 and outside the sun gear 46, meshing with both the sun gear 46 and the gear ring 20. The planetary shaft 44 is inserted into the axis of the planetary gear 45. The planet carrier 47 is installed inside the reinforced rear housing 22 via a bearing bracket, with the right end of the planetary shaft 44 connected to the left end face of the planet carrier 47.

[0026] Furthermore, the main drive gear shaft 41 has 10 teeth, a large end face module of 6.54mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42mm, and an installation distance of 120mm.

[0027] Furthermore, the passive spiral bevel gear 42 has 35 teeth, a large end face module of 6.54 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42 mm, and an installation distance of 57.2 mm. The speed reduction effect is achieved through the difference in the number of teeth between the main drive gear shaft 41 and the spiral bevel gear 42.

[0028] Furthermore, the stellar gear 46 has 11 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 97.54 mm, and a center distance of 78.5 mm.

[0029] Furthermore, the planetary gear 45 has 22 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 64 mm, and a center distance of 78.5 mm.

[0030] Furthermore, the gear ring 20 has 58 teeth, a module of 4.5mm, a pressure angle of 20 degrees, a tooth width of 60mm, and a center distance of 170mm. When the sun gear 46 rotates, it drives the planet gear 45 to rotate, and the planet gear 45 drives the gear ring 20 to roll.

[0031] In use, the fixed shaft is inserted into the planetary carrier 47 and fixed to the planetary carrier 47 with bolts. The power motor is installed at the bottom of the front housing 8 with the cooperation of bolts and flanges, and the output end of the power motor is connected to the bottom end of the main drive gear shaft 41 with the cooperation of bolts and flanges. When the power motor is started, the output end of the power motor drives the bottom end of the main drive gear shaft 41 to rotate. The top end of the main drive gear shaft 41 rotates, which drives the driven spiral bevel gear 42 to rotate. The driven spiral bevel gear 42 drives the central shaft 43 to rotate. The central shaft 43 drives the sun gear 46 to rotate. The sun gear 46 drives the planetary gear 45 on its outer side to rotate along the outer side of the planetary shaft 44. The planetary shaft 44 remains stationary under the support of the planetary carrier 47. When the planetary gear 45 rotates along the outer side of the planetary shaft 44, it drives the gear ring 20 to rotate. The gear ring 20 drives the reinforced rear housing 22 to rotate slowly, thereby driving the stirring equipment to rotate through the reinforced rear housing 22.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated shaft right-angle planetary reducer, comprising a housing, a primary reduction mechanism and a secondary reduction mechanism for speed reduction, characterized in that: Both the primary and secondary reduction mechanisms are located inside the housing; The secondary reduction mechanism includes a gear ring (20), a planetary shaft (44), a planetary gear (45), a sun gear (46), and a planet carrier (47). The sun gear (46) is installed inside the gear ring (20), and the left end of the sun gear (46) is installed with the right end of the central shaft (43). The planetary gear (45) is located inside the gear ring (20) and outside the sun gear (46). The planetary gear (45) meshes with both the sun gear (46) and the gear ring (20). The planetary shaft (44) is inserted into the axis of the planetary gear (45). The planet carrier (47) is installed inside the reinforced rear housing (22) through a bearing bracket. The right end of the planetary shaft (44) is inserted into the left end face of the planet carrier (47). The housing includes a first external hexagonal bolt (1), a first internal hexagonal head screw (2), a first flat washer (3), a front housing upper end cover (4), a first O-ring seal (5), a screw (6), a second flat washer (7), a front housing (8), a G three-eighths plug aluminum washer (9), a three-eighths plug (10), a second O-ring seal (11), a second external hexagonal bolt (12), a half-plug (13), a G half-plug aluminum washer (14), a hexagonal thin nut (15), a first spring washer (16), a heavy-duty lifting lug (17), a middle housing (18), a third O-ring seal (19), a gear ring (20), and a second The components include a hexagonal head screw (21), a reinforced rear housing (22), a fourth O-ring seal (23), a rear housing end cap (24), a third flat washer (25), a second spring washer (26), a fourth hexagonal head screw (27), and a skeleton oil seal (28). The first external hexagonal bolt (1) is fitted with a first flat washer (3) and installed on the lower left side of the front housing (8). The upper end cap (4) of the front housing is installed with the left end of the first external hexagonal bolt (1) by the first hexagonal head screw (2). The first O-ring seal (5) for sealing is set between the upper end cap (4) of the front housing and the first external hexagonal bolt (1).

2. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The screw (6) is fitted with a second flat washer (7) on the outside and installed on the upper side of the left end face of the front housing (8). The three-eighths plug (10) is fitted with a G three-eighths plug aluminum washer (9) on the outside and installed on the hole on the left side of the surface of the front housing (8).

3. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The second external hexagonal bolt (12) is fitted with a first flat washer (3) on its outer side. The second external hexagonal bolt (12) is installed on the left side of the front housing (8). The middle housing (18) is installed on the right side of the front housing (8) through the cooperation of the second flat washer (7) and the second external hexagonal bolt (12). The second O-ring seal (11) for sealing is set in the gap between the front housing (8) and the middle housing (18). The half-end plug (13) is fitted with a G half-end plug aluminum gasket (14) on its outer side. The half-end plug (13) is installed with the hole on the front surface of the front housing (8).

4. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The third O-ring seal (19) is set in the gap between the middle housing (18) and the gear ring (20), and the third O-ring seal (19) is set in the gap between the gear ring (20) and the reinforced rear housing (22). The reinforced rear housing (22), gear ring (20) and middle housing (18) for driving are installed by the cooperation of the nut, the first spring washer (16), the second internal hexagonal head screw (21), the third internal hexagonal head screw and the positioning screw.

5. The integrated shaft right-angle planetary reducer according to claim 4, characterized in that: The left end of the third internal hexagonal head screw extends to the left side of the middle housing (18). The heavy lifting lug (17) is fixed to the left end of the third internal hexagonal head screw by the cooperation of the hexagonal thin nut (15) and the first spring washer (16). The cylindrical pin is inserted between the middle housing (18) and the reinforced rear housing (22) to assist in limiting and fixing the gear ring (20).

6. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The skeleton oil seal (28) is installed inside the right end of the rear housing end cover (24). The rear housing end cover (24) is installed on the right end face of the reinforced rear housing (22) by the cooperation of the fourth internal hexagonal head screw (27), the second spring washer (26) and the third flat washer (25). A fourth O-ring (23) for sealing is provided between the rear housing end cover (24) and the reinforced rear housing (22).

7. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The first-stage reduction mechanism includes a main drive gear shaft (41), a passive spiral bevel gear (42), and a central shaft (43). The main drive gear shaft (41) is installed in the bottom vertical shaft hole of the front housing (8) through a bearing bracket. The central shaft (43) is installed in the horizontal shaft hole of the front housing (8) through a bearing bracket. The passive spiral bevel gear (42) is engaged with the outside of the central shaft (43). The left bevel gear of the passive spiral bevel gear (42) meshes with the top bevel gear of the main drive gear shaft (41).

8. The integrated shaft right-angle planetary reducer according to claim 7, characterized in that: The main drive gear shaft (41) has 10 teeth, a large end face module of 6.54 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42 mm, and an installation distance of 120 mm.

9. The integrated shaft right-angle planetary reducer according to claim 7, characterized in that: The passive spiral bevel gear (42) has 35 teeth, a large end face module of 6.54 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, a shaft intersection angle of 90 degrees, a tooth width of 42 mm, and an installation distance of 57.2 mm.

10. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The stellar gear (46) has 11 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 97.54 mm, and a center distance of 78.5 mm.

11. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The planetary gear (45) has 22 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 64 mm, and a center distance of 78.5 mm.

12. The integrated shaft right-angle planetary reducer according to claim 1, characterized in that: The gear ring (20) has 58 teeth, a module of 4.5 mm, a pressure angle of 20 degrees, a tooth width of 60 mm, and a center distance of 170 mm.

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