Super-power right-angle planetary reducer

Abstract

The ultrahigh-power right-angle planetary reducer comprises a shell, a first speed reducing mechanism and a second speed reducing mechanism, the first speed reducing mechanism is installed in the shell and located at the position close to the left end, and the second speed reducing mechanism is installed in the shell and located at the position close to the right end. And the right end of the first speed reducing mechanism is in transmission connection with the left end of the second speed reducing mechanism. According to the super-power right-angle planetary reducer, the first-stage 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 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] The invention relates to the technical field of reducers, and in particular to an ultra-high power right-angle planetary reducer. Background Art

[0002] Twin-shaft mixers are generally forced mixers, suitable for all kinds of large, medium and small prefabricated component plants and industrial and civil construction projects such as roads, bridges, water conservancy projects, docks, etc. They can mix dry hard concrete, plastic concrete, fluid concrete, lightweight aggregate concrete and various mortars. They are an indispensable super-high-power model in the construction industry. During the mixing process, the reduction motor rotates the mixing shaft in one direction through the coupling, and the positive and negative sets of blades on the mixing shaft mix the materials, so that the materials are fully mixed, thereby obtaining a more ideal mixing effect. However, most of the current reduction gearboxes cannot meet the output requirements of low speed, high stability and high torque of the mixer.

[0003] The patent with the authorization announcement number CN208935275U discloses a right-angle planetary reducer structure, including a right-angle housing, an input shaft and a bevel gear, wherein the bevel gear is provided with two first bevel gears and a second bevel gear, wherein the first bevel gear is correspondingly provided at one right angle of the right-angle housing, and the second bevel gear is correspondingly provided at another right angle of the right-angle housing, and the first bevel gear and the second bevel gear are meshed with each other, the input shaft is correspondingly provided in the second bevel gear and correspondingly provided with the right-angle housing, and two first bearings are correspondingly provided on the side of the input shaft. This patent improves the meshing accuracy and reduces the noise of the planetary reducer when it is running under load.

[0004] The patent with authorization announcement number CN111692289A discloses a highly integrated dual-input and output reducer for a mixer, aiming to solve the problems of insufficient output torque and low integration. The key points of its technical solution are: a highly integrated dual-input and output reducer for a mixer, including an input system, a transition system, a reduction system and an output system. This patent realizes the independent transmission of two motors and two stirring blades by one reducer, solving the problems of insufficient output torque and low integration and space occupation. Although the above two existing patent technologies have improved the performance of the mixer to a certain extent, they do not provide specific technical solutions to achieve low-speed, high-stability and high-torque output. Therefore, designing an ultra-high-power right-angle planetary reducer to meet the mixer's output requirements for low speed, high stability and high torque has become an urgent problem that needs to be solved. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an ultra-high power right-angle planetary reducer, which solves the problem that the reducer cannot meet the output requirements of the mixer with low speed, high stability and high torque.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultra-high power right-angle planetary reducer, comprising a housing, a first reduction mechanism and a second reduction mechanism, wherein the first reduction mechanism is installed inside the housing and is located at the left end, and the second reduction mechanism is installed inside the housing and is located at the right end, and the right end of the first reduction mechanism is transmission-connected to the left end of the second reduction mechanism;

[0007] The outer shell includes a first spring washer, a first flat washer, a first fixing nut, a second fixing nut, a long plugging head, a first hexagon socket bolt, an upper end cover of the front shell, an end cover sealing ring, a second hexagon socket bolt, a short plugging head, a front shell, a first sealing ring, a middle shell, a second sealing ring, an inner gear ring, a third sealing ring, a fixed interspersed bolt, a third fixing nut, a fourth sealing ring, a skeleton oil seal, a tail end hexagon socket bolt, a second flat washer, a second spring washer, a rear shell end cover, a locating pin and a double-headed fixing screw. The long plugging head is installed on the front side of the front shell, and the two short plugging heads are respectively installed on the top and the rear side of the front shell. The first hexagon socket bolt fixes the upper end cover of the front shell to the left end of the front shell. The end cover sealing ring is arranged between the upper end cover of the front shell and the front shell, the first sealing ring is arranged between the front shell and the middle shell, and the front shell and the middle shell are fixed by the second hexagon socket bolt. The housing is installed, and the two second sealing rings are respectively arranged between the middle housing and the inner gear ring and between the inner gear ring and the third sealing ring. The fixed interpenetrating bolt passes through the third sealing ring, the inner gear ring and the middle housing from the right side. The left end of the fixed interpenetrating bolt is fixed by the cooperation of the first spring washer, the first flat washer and the first fixing nut. The double-headed fixing screw is inserted into the inner gear ring, and the left and right ends of the double-headed fixing screw extend to the left side of the middle housing and the right side of the third sealing ring respectively. The ends of the double-headed fixing screw are fixed by the second fixing nut and the third fixing nut. The fourth sealing ring is arranged between the rear housing end cover and the third sealing ring. The rear housing end cover is installed with the right end face of the third sealing ring by the cooperation of the tail end hexagon socket bolt, the second flat washer and the second spring washer. The skeleton oil seal is installed inside the rear housing end cover, and the locating pin is arranged inside the inner gear ring.

[0008] The first reduction mechanism comprises a main transmission gear shaft, a passive spiral bevel gear and a central shaft, wherein the main transmission gear shaft is vertically mounted inside the bottom opening of the front housing through a bearing frame, the central shaft is horizontally mounted inside the front housing through a bearing frame and is located on the upper side of the main transmission gear shaft, the passive spiral bevel gear is sleeved on the outer side of the central shaft, and the passive spiral bevel gear and the central shaft are fixedly mounted by bolts;

[0009] The second reduction mechanism includes a sun gear, a planetary shaft, a planetary gear and a planetary carrier. The left end of the sun gear is inserted into the right end of the center shaft. The planetary carrier is installed inside the third sealing ring through a bearing frame. The right end of the planetary shaft is plugged into the planetary carrier. The planetary gear is sleeved on the outside of the planetary shaft. The planetary gear is meshed with the tooth head of the outer wall of the sun gear, and the planetary gear is meshed with the tooth head of the inner wall of the inner gear ring.

[0010] Preferably, the main drive gear shaft has 11 teeth, a large end face module of 10.0788 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, an axis angle of 90 degrees, a tooth width of 80 mm, and an installation distance of 272 mm.

[0011] Preferably, the passive spiral bevel gear has 51 teeth, a large end face module of 10.0788 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, an axis angle of 90 degrees, a tooth width of 80 mm, and an installation distance of 272 mm.

[0012] Preferably, the sun gear has 16 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 130 mm, and a center distance of 176 mm.

[0013] Preferably, the planetary gear has 26 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 120 mm, and a center distance of 176 mm.

[0014] Preferably, the inner gear ring has 71 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 130 mm, and a center distance of 176 mm.

[0015] Compared with the prior art, the present invention provides an ultra-high power right-angle planetary reducer with the following features:

[0016] Beneficial effects:

[0017] 1. This ultra-high power right-angle planetary reducer, the first-stage reducer achieves deceleration through the difference in the number of teeth between the main drive gear shaft and the passive spiral bevel gear. The passive spiral bevel gear is maintained stable by the central shaft. The second-stage reducer achieves deceleration through the cooperation of the planetary shaft, planetary gear, sun gear and planetary carrier. The reduction transmission has high stability, and has the characteristics of high speed and low torque input, low speed and high torque output. The overall installation has no over-positioning, high safety factor, high working efficiency, and strong load-bearing capacity. It is suitable for large-volume mixers.

[0018] 2. This ultra-high power right-angle planetary reducer adopts a right-angle arrangement transmission method, which reduces the space occupied during installation, increases space utilization, and improves the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the assembly cross-sectional structure of an ultra-high power right-angle planetary reducer according to the present invention;

[0020] Figure 2 This is an exploded view of the shell structure of an ultra-high power right-angle planetary reducer described in the present invention.

[0021] The symbols in the accompanying drawings are described as follows:

[0022] 1. First spring washer; 2. First flat washer; 3. First fixing nut; 4. Second fixing nut; 5. Long plugging head; 6. First hexagon socket bolt; 7. Front housing upper end cover; 8. End cover sealing ring; 9. Second hexagon socket bolt; 10. Short plugging head; 11. Front housing; 12. First sealing ring; 13. Middle housing; 14. Second sealing ring; 15. Internal gear ring; 16. Third sealing ring; 17. Fixed interpenetrating bolt; 18. Third fixing nut; 19. Fourth sealing ring; 20. Skeleton oil seal; 21. Hexagon socket bolt at the tail end; 22. Second flat washer; 23. Second spring washer; 25. Rear housing end cover; 26. Positioning pin; 27. Double-headed fixing screw; 31. Main transmission gear shaft; 32. Passive spiral bevel gear; 33. Center shaft; 34. Sun gear; 35. Planetary shaft; 36. Planetary gear; 37. Planet carrier. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-2 The present invention provides an ultra-high power right-angle planetary reducer, comprising a housing, a first reduction mechanism and a second reduction mechanism, wherein the first reduction mechanism is installed inside the housing and is located near the left end, and the second reduction mechanism is installed inside the housing and is located near the right end, and the right end of the first reduction mechanism is transmission-connected to the left end of the second reduction mechanism;

[0025] The housing includes a first spring washer 1, a first flat washer 2, a first fixing nut 3, a second fixing nut 4, a long plugging head 5, a first hexagon socket bolt 6, a front housing upper end cover 7, an end cover sealing ring 8, a second hexagon socket bolt 9, a short plugging head 10, a front housing 11, a first sealing ring 12, a middle housing 13, a second sealing ring 14, an inner gear ring 15, a third sealing ring 16, a fixing interpenetrating bolt 17, a third fixing nut 18, a fourth sealing ring 19, a skeleton oil seal 20, a tail end hexagon socket bolt 21, and a second flat washer 2 2. The second spring washer 23, the rear shell end cover 25, the positioning pin 26 and the double-headed fixing screw 27, the long plugging head 5 is installed on the front side of the front shell 11, and the two short plugging heads 10 are respectively installed on the top and the rear side of the front shell 11. The first hexagon socket bolt 6 fixes the front shell upper end cover 7 to the left end of the front shell 11, the end cover sealing ring 8 is arranged between the front shell upper end cover 7 and the front shell 11, and the first sealing ring 12 is arranged between the front shell 11 and the middle shell 13. The front shell is fixed by the second hexagon socket bolt 9. 11 and the middle housing 13 are installed, the two second sealing rings 14 are respectively arranged between the middle housing 13 and the inner gear ring 15 and between the inner gear ring 15 and the third sealing ring 16, the fixing interpenetrating bolt 17 passes through the third sealing ring 16, the inner gear ring 15 and the middle housing 13 from the right side, the left end of the fixing interpenetrating bolt 17 is fixed by the cooperation of the first spring washer 1, the first flat washer 2 and the first fixing nut 3, the double-headed fixing screw 27 is inserted in the inner gear ring 15, and the left and right ends of the double-headed fixing screw 27 extend to the middle On the left side of the housing 13 and the right side of the third sealing ring 16, the ends of the double-headed fixing screw 27 are fixed by the second fixing nut 4 and the third fixing nut 18, the fourth sealing ring 19 is arranged between the rear housing end cover 25 and the third sealing ring 16, the rear housing end cover 25 is installed with the right end surface of the third sealing ring 16 by the cooperation of the tail end hexagon socket bolt 21, the second flat washer 22 and the second spring washer 23, the skeleton oil seal 20 is installed inside the rear housing end cover 25, and the positioning pin 26 is arranged inside the inner gear ring 15;

[0026] The first reduction mechanism includes a main transmission gear shaft 31, a passive spiral bevel gear 32 and a center shaft 33. The main transmission gear shaft 31 is vertically mounted inside the bottom opening of the front housing 11 through a bearing frame. The center shaft 33 is horizontally mounted inside the front housing 11 through a bearing frame and is located on the upper side of the main transmission gear shaft 31. The passive spiral bevel gear 32 is sleeved on the outer side of the center shaft 33. The passive spiral bevel gear 32 and the center shaft 33 are fixedly mounted by bolts.

[0027] The second reduction mechanism includes a sun gear 34, a planetary shaft 35, a planetary gear 36 and a planetary carrier 37. The left end of the sun gear 34 is inserted into the right end of the center shaft 33. The planetary carrier 37 is installed inside the third sealing ring 16 through a bearing frame. The right end of the planetary shaft 35 is plugged into the planetary carrier 37. The planetary gear 36 is sleeved on the outside of the planetary shaft 35. The planetary gear 36 is meshed with the tooth head of the outer wall of the sun gear 34, and the planetary gear 36 is meshed with the tooth head of the inner wall of the inner gear ring 15.

[0028] Furthermore, the number of teeth on the main drive gear shaft 31 is 11, the large end face module is 10.0788mm, the pressure angle is 20 degrees, the central helix angle is 35 degrees, the axis angle is 90 degrees, the tooth width is 80mm, and the installation distance is 272mm.

[0029] Furthermore, the passive spiral bevel gear 32 has 51 teeth, a large end module of 10.0788 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, an axis angle of 90 degrees, a tooth width of 80 mm, and an installation distance of 272 mm. The deceleration effect is achieved through the coordination of the difference in the number of teeth.

[0030] Furthermore, the number of teeth of the sun gear 34 is 16, the module is 8 mm, the pressure angle is 20 degrees, the tooth width is 130 mm, and the center distance is 176 mm.

[0031] Furthermore, the number of teeth of the planetary gear 36 is 26, the module is 8 mm, the pressure angle is 20 degrees, the tooth width is 120 mm, and the center distance is 176 mm.

[0032] Furthermore, the number of teeth of the inner gear ring 15 is 71, the module is 8 mm, the pressure angle is 20 degrees, the tooth width is 130 mm, and the center distance is 176 mm.

[0033] When in use, the output end of the power motor is installed and fixed with the flange at the bottom end of the main transmission gear shaft 31 through the combination of bolts and flanges, and the main transmission gear shaft 31 is driven to rotate by the power motor. When the main transmission gear shaft 31 rotates, the passive spiral bevel gear 32 is driven to rotate through the tooth head at the top. When the passive spiral bevel gear 32 rotates, it drives the central shaft 33 to rotate synchronously. The first stage reduction effect is achieved by the difference in the number of teeth between the main transmission gear shaft 31 and the passive spiral bevel gear 32. When the central shaft 33 rotates, it drives the sun gear 34 connected to its right end to rotate synchronously. The rotation drives the planetary gear 36 to rotate. When the planetary gear 36 rotates, it rolls under the restriction of the tooth head on the inner wall of the inner gear ring 15, so that the planetary gear 36 revolves while rotating. When the planetary gear 36 revolves, it drives the planetary shaft 35 to revolve. When the planetary shaft 35 revolves, it drives the planetary carrier 37 on the right side to revolve. The second deceleration effect is achieved through the cooperation of the sun gear 34, the planetary shaft 35, the planetary gear 36, the inner gear ring 15 and the fixing interlaced bolts 17, so as to achieve the effect of low-speed stable transmission. Finally, the stirring device is driven by the planetary carrier 37 to rotate slowly to perform stirring work.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-high power right-angle planetary reducer, comprising a housing, a first reduction mechanism and a second reduction mechanism, characterized in that: The first reduction mechanism is installed inside the housing and is located at the left end, the second reduction mechanism is installed inside the housing and is located at the right end, and the right end of the first reduction mechanism is transmission-connected with the left end of the second reduction mechanism; The housing comprises a first spring washer (1), a first flat washer (2), a first fixing nut (3), a second fixing nut (4), a long plugging head (5), a first hexagon socket bolt (6), a front housing upper end cover (7), an end cover sealing ring (8), a second hexagon socket bolt (9), a short plugging head (10), a front housing (11), a first sealing ring (12), a middle housing (13), a second sealing ring (14), an inner gear ring (15), a third sealing ring (16), a fixing through bolt (17), a third fixing nut (18), a fourth sealing ring (19), a skeleton oil seal (20), a tail end hexagon socket bolt (21), a second flat washer (22), a second spring washer (23), a rear housing end cover (25), a positioning pin (26) and a double-headed fixing screw (27); The first hexagon socket bolt (6) fixes the front housing upper end cover (7) to the left end of the front housing (11), and the front housing (11) and the middle housing (13) are installed by the second hexagon socket bolt (9). The rear housing end cover (25) is installed on the right end surface of the third sealing ring (16) by the cooperation of the tail end hexagon socket bolt (21), the second flat washer (22) and the second spring washer (23). The skeleton oil seal (20) is installed inside the rear housing end cover (25), and the positioning pin (26) is arranged inside the inner gear ring (15).

2. According to claim 1, a super high power right angle planetary reducer is characterized in that: The long plugging head (5) is installed on the front side of the front shell (11), and the two short plugging heads (10) are installed on the top and rear side of the front shell (11) respectively.

3. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The fixing through-penetrating bolt (17) passes through the third sealing ring (16), the inner gear ring (15) and the middle housing (13) from the right side, and the left end of the fixing through-penetrating bolt (17) is fixed by the cooperation of the first spring washer (1), the first flat washer (2) and the first fixing nut (3).

4. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The double-headed fixing screw (27) is inserted into the inner gear ring (15), and the left and right ends of the double-headed fixing screw (27) extend to the left side of the middle housing (13) and the right side of the third sealing ring (16) respectively, and the ends of the double-headed fixing screw (27) are fixed by the second fixing nut (4) and the third fixing nut (18).

5. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The end cover sealing ring (8) is arranged between the upper end cover (7) of the front housing and the front housing (11); the first sealing ring (12) is arranged between the front housing (11) and the middle housing (13); the two second sealing rings (14) are respectively arranged between the middle housing (13) and the inner gear ring (15) and between the inner gear ring (15) and the third sealing ring (16); and the fourth sealing ring (19) is arranged between the end cover (25) of the rear housing and the third sealing ring (16).

6. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The first reduction mechanism comprises a main transmission gear shaft (31), a passive spiral bevel gear (32) and a center shaft (33); the main transmission gear shaft (31) is vertically mounted inside the bottom opening of the front housing (11) through a bearing frame; the center shaft (33) is horizontally mounted inside the front housing (11) through the bearing frame and is located on the upper side of the main transmission gear shaft (31); the passive spiral bevel gear (32) is sleeved on the outer side of the center shaft (33); and the passive spiral bevel gear (32) and the center shaft (33) are fixedly mounted by bolts.

7. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The second reduction mechanism comprises a sun gear (34), a planetary shaft (35), a planetary gear (36) and a planetary carrier (37); the left end of the sun gear (34) is inserted into the right end of the central shaft (33); the planetary carrier (37) is installed inside the third sealing ring (16) through a bearing frame; the right end of the planetary shaft (35) is plugged into the planetary carrier (37); the planetary gear (36) is sleeved on the outside of the planetary shaft (35); the planetary gear (36) is meshed with the outer wall tooth head of the sun gear (34); and the planetary gear (36) is meshed with the inner wall tooth head of the inner gear ring (15).

8. The ultra-high power right-angle planetary reducer according to claim 6, characterized in that: The main transmission gear shaft (31) has 11 teeth, a large end face module of 10.0788 mm, a pressure angle of 20 degrees, a central helix angle of 35 degrees, an axis intersection angle of 90 degrees, a tooth width of 80 mm, and an installation distance of 272 mm.

9. The ultra-high power right-angle planetary reducer according to claim 6, characterized in that: The passive spiral bevel gear (32) has 51 teeth, a large end face module of 10.0788 mm, a pressure angle of 20 degrees, a central spiral angle of 35 degrees, an axis angle of 90 degrees, a tooth width of 80 mm, and an installation distance of 272 mm.

10. The ultra-high power right-angle planetary reducer according to claim 7, characterized in that: The sun gear (34) has 16 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 130 mm, and a center distance of 176 mm.

11. The ultra-high power right-angle planetary reducer according to claim 7, characterized in that: The planetary gear (36) has 26 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 120 mm, and a center distance of 176 mm.

12. The ultra-high power right-angle planetary reducer according to claim 1, characterized in that: The inner gear ring (15) has 71 teeth, a module of 8 mm, a pressure angle of 20 degrees, a tooth width of 130 mm, and a center distance of 176 mm.

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