Composite planetary reduction gearbox

Abstract

The utility model discloses a compound type planetary reduction gearbox which comprises an upper reduction gearbox and an input shaft, the upper reduction gearbox is movably connected with the input shaft in an inserted mode, a bearing a is connected outside the input shaft in a sleeved mode, the input shaft is connected with a planet carrier bearing seat in a rotating mode through the bearing a, and an input end cover is arranged above the surface of the input shaft in a sleeved mode. A framework oil seal a is arranged on the input end cover, a fixed connecting seat is fixed on the outer side of the planet carrier bearing seat, a direct insertion nozzle is arranged on the fixed connecting seat, a fixed large gear is installed at the bottom end of the fixed connecting seat, and a slewing bearing is arranged at the bottom end of the fixed large gear; and a reduction gearbox lower shell is arranged outside the slewing bearing. According to the composite planetary reduction gearbox, the upper reduction gearbox is directly inserted into the input shaft, maintenance is convenient, cost input is reduced, the lower reduction gearbox is internally provided with a first-stage planet carrier for speed reduction, and the rotating speed is further stably reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer, specifically is a compound planetary reduction gearbox. BACKGROUND

[0002] Traditional vertical shaft planetary mixer reduction gearbox is the running mode of revolution plus rotation, its structure is relatively complex, is composed of two parallel reduction gearbox, the upper reduction gearbox casing is fixed on the mixer, adopts multilevel parallel gear reduction, and the reduction ratio is unique, if different reduction ratio is selected, a plurality of gear parts even the shell need to be changed, the cost is larger, and the lower planetary reduction gearbox is fixedly connected with the upper reduction gearbox, only contains the planetary pinion and the revolution gear wheel cooperation to carry out revolution and rotation, and the upper and lower reduction gearbox need to be removed integrally when disassembling and maintaining, cannot be produced in modularization, greatly increases the production cost and maintenance cost.

[0003] The patent with application No. CN202311121912. X discloses a kind of clearance eliminating planetary reducer, including planet carrier, sun gear, inner ring gear and multiple planetary gears. Its characteristics are that elastic element is arranged between planet carrier and sun gear to realize the pre-tightening force adjustment of planetary gear, reduce reverse clearance, improve transmission accuracy and stability. Although the technology has made certain progress in improving transmission accuracy, it has not provided a comprehensive solution in terms of maintenance convenience, dust prevention and oil seal design.

[0004] In view of the limitations of the prior art in terms of maintenance convenience, dust prevention and oil seal design, it is necessary to provide a more efficient, stable and cost-effective reduction gearbox. SUMMARY

[0005] To overcome the shortcomings of the prior art, the utility model provides a kind of compound planetary reduction gearbox, solves the problem of poor dustproof oil seal effect, high production cost and maintenance cost of vertical shaft planetary mixer.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a kind of compound planetary reduction gearbox, including upper reduction gearbox and input shaft, the upper reduction gearbox is movably inserted with input shaft, the outer sleeve of input shaft is connected with bearing a, the input shaft is rotatably connected with planet carrier bearing seat by bearing a, the surface of input shaft is sleeved with input end cover, the input end cover is provided with skeleton oil seal a, the outer side of planet carrier bearing seat is fixed with fixed connecting seat, the fixed connecting seat is provided with direct rebelling nozzle, the bottom of fixed connecting seat is installed with fixed gear wheel, the bottom of fixed gear wheel is provided with slewing bearing, the outer portion of slewing bearing is provided with reduction gearbox lower shell;

[0007] The upper part of the lower casing of the reduction gearbox is provided with an upper casing of the reduction gearbox, a sealing ring is arranged between the upper casing of the reduction gearbox and the fixed connecting seat, the surface of the upper casing of the reduction gearbox is provided with a felt, the bottom end of the input shaft is driven by gear meshing with a planetary gear and a fixed gear, the inside of the lower casing of the reduction gearbox is penetrated by a lower planet carrier, and the lower casing of the reduction gearbox is driven to rotate around the center of the slewing bearing by the spline, a rotation pinion is arranged at the center distance of the upper casing of the reduction gearbox and the lower casing of the reduction gearbox, the outside of the rotation pinion is penetrated by an output shaft, the upper part of the output shaft is provided with a bearing end cover a, a bearing b and a spacer ring b, the lower part of the output shaft is provided with a bearing c, a skeleton oil seal c, a bearing end cover b and a spacer ring c, the middle part of the output shaft is provided with a skeleton oil seal b, the lower part of the lower casing of the reduction gearbox is provided with an output shaft bearing seat, the output shaft bearing seat is provided with a stirring connecting frame, the bottom end of the output shaft bearing seat is provided with a cover plate, the stirring connecting frame is fixedly connected with the output shaft through the cover plate, the bottom end of the lower planet carrier is threadedly connected with a locking nut, the inside of the locking nut is provided with a gasket b, the outside of the locking nut is provided with a dust cover, the upper part of the lower planet carrier is provided with an upper planet carrier, the upper planet carrier and the lower planet carrier are connected in an upper-lower split mode, the inside of the upper planet carrier is provided with a planetary gear, a plurality of rolling pins are arranged in the inside of the planetary gear in an upper-lower distribution mode, the upper and lower rolling pins are provided with a spacer ring a arranged between them, the inside of the planetary gear is penetrated by a planet shaft, the upper and lower ends of the planetary gear are provided with gaskets a with notches, and a half-spherical top bead is arranged at the center position of the lower casing of the reduction gearbox.

[0008] Preferably, the fixed gear is connected to the fixed side of the slewing bearing, and the rotating side of the slewing bearing is connected to the lower casing of the reduction gearbox.

[0009] Preferably, the upper casing of the reduction gearbox and the fixed connecting seat are provided with a gap, the gap is provided with a sealing ring, and the gap cooperates with the concave-convex structure of the fixed connecting seat to form a labyrinth, and the labyrinth rotates around the center of the fixed connecting seat without interference, the labyrinth ring is provided with a U-shaped concave-convex step, the concave surface is provided with a plurality of threaded holes for being mounted on the upper casing of the reduction gearbox.

[0010] Preferably, the felt is embedded on the cylindrical surface of the upper casing of the reduction gearbox.

[0011] Preferably, a plurality of oil injection holes are arranged on the fixed connecting seat, and a direct insertion nozzle is arranged on the oil injection hole.

[0012] Preferably, the upper part of the input shaft is provided with a spline hub, and the lower part is provided with a gear, forming the inner tooth meshing of the sun gear, planetary gear and fixed gear, and forming the planetary system to reduce the speed.

[0013] Preferably, the surface of the lower planet carrier is provided with threads, and the lower planet carrier is locked on the lower casing of the reduction gearbox through the gasket b and the locking nut, and the dust cover is arranged on the lower casing of the reduction gearbox.

[0014] Compared with the prior art, the utility model provides a kind of compound planetary reduction gearbox, with following beneficial effects:

[0015] 1、The compound planetary reduction gearbox, upper reduction gearbox can select the planetary reduction gearbox of different reduction ratio in market independent installation, it is convenient to maintain and reduce cost investment;Lower reduction gearbox is revolved and rotates simultaneously, and it contains primary planetary carrier reduction, primary planetary carrier can be integrally disassembled and removed for easy maintenance, and can further reduce speed stably.

[0016] 2、The compound planetary reduction gearbox adopts rotary support to bear and rotates reduction gearbox shell, effectively improves the bearing capacity and impact force of reduction gearbox, carries out oil seal effect through labyrinth ring oil injection design, effectively prevents concrete and dust from invading, prevents reduction gearbox gear lubricating oil from flowing out, so that gear can be long-term stable operation, improves the service life of reduction gearbox. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the cross-sectional view of the compound planetary reduction gearbox described in the utility model;

[0018] Figure 2 It is the explosion view of the compound planetary reduction gearbox described in the utility model;

[0019] Figure 3 It is the labyrinth diagram formed by the concave-convex structure of the fixed connecting seat of the compound planetary reduction gearbox described in the utility model;

[0020] Figure 4 It is the shaft side schematic view of the compound planetary reduction gearbox described in the utility model.

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

[0022] 1, upper reduction gearbox;2, input shaft;3, input end cover;4, skeleton oil seal a;5, bearing a;6, planetary carrier bearing seat;7, fixed connecting seat;8, direct adapter;9, sealing ring;10, felt;11, reduction gearbox upper shell;12, reduction gearbox lower shell;13, upper planetary carrier;14, lower planetary carrier;15, top bead;16, planetary shaft;17, gasket a;18, needle roller;19, spacer ring a;20, planetary gear;21, fixed gear;22, rotary support;23, bearing end cover a;24, bearing b;25, spacer ring b;26, rotation small gear;27, output shaft;28, skeleton oil seal b;29, output shaft bearing seat;30, bearing c;31, skeleton oil seal c;32, bearing end cover b;33, spacer ring c;34, stirring connecting frame;35, cover plate;36, gasket b;37, lock nut;38, dust cover. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a kind of composite planetary reduction gearbox, including upper reduction gearbox 1 and input shaft 2, upper reduction gearbox 1 is movably inserted with input shaft 2, the outside of input shaft 2 is sleeved with bearing a 5, input shaft 2 is rotatably connected with planet carrier bearing seat 6 by bearing a 5, the surface of input shaft 2 is sleeved with input end cover 3, input end cover 3 is provided with skeleton oil seal a 4, the outside of planet carrier bearing seat 6 is fixed with fixed connecting seat 7, fixed connecting seat 7 is provided with direct transfer spout 8, the bottom of fixed connecting seat 7 is installed with fixed big gear 21, the bottom of fixed big gear 21 is provided with slewing bearing 22, the outside of slewing bearing 22 is provided with reduction gearbox lower housing 12;

[0025] The upper part of the reduction gearbox lower shell 12 is provided with a reduction gearbox upper shell 11, a sealing ring 9 is installed between the reduction gearbox upper shell 11 and the fixed connecting seat 7, the surface of the reduction gearbox upper shell 11 is provided with a felt 10, the bottom end of the input shaft 2 is driven by gear engagement with a planetary gear 20 and a fixed gear 21, the inside of the reduction gearbox lower shell 12 is penetrated by a lower planet carrier 14, and the reduction gearbox lower shell 12 is driven to rotate around the center of the slewing bearing 22 by the spline, a self-rotating pinion 26 is installed at the center distance of the reduction gearbox upper shell 11 and the reduction gearbox lower shell 12, the outside of the self-rotating pinion 26 is penetrated by an output shaft 27, the upper part of the output shaft 27 is provided with a bearing end cover a 23, a bearing b 24 and a spacer ring b 25, the lower part of the output shaft 27 is provided with a bearing c 30, a skeleton oil seal c 31, a bearing end cover b 32 and a spacer ring c 33, the middle part of the output shaft 27 is provided with a skeleton oil seal b 28, the lower part of the reduction gearbox lower shell 12 is installed with an output shaft bearing seat 29, the output shaft bearing seat 29 is installed with a stirring connecting frame 34 below, the bottom end of the output shaft bearing seat 29 is installed with a cover plate 35, the stirring connecting frame 34 is fixedly connected with the output shaft 27 through the cover plate 35, the bottom end of the lower planet carrier 14 is threadedly connected with a locking nut 37, the inside of the locking nut 37 is provided with a gasket b 36, and the outside of the locking nut 37 is sleeved with a dust cover 38, the upper planet carrier 13 is installed on the lower planet carrier 14, the upper planet carrier 13 and the lower planet carrier 14 are connected in an upper and lower split body, the inside of the upper planet carrier 13 is provided with a planetary gear 20, a plurality of needle rollers 18 are evenly distributed in the inside of the planetary gear 20, a spacer ring a 19 is arranged between the upper and lower needle rollers 18, the inside of the planetary gear 20 is penetrated by a planet shaft 16, the upper and lower ends of the planetary gear 20 are installed with a gasket a 17 with a notch, a half-spherical top bead 15 is installed at the center position of the reduction gearbox lower shell 12, the upper reduction gearbox 1 is directly inserted into the input shaft 2, and the input shaft 2 is driven to rotate by the engagement of the fixed gear 21 and the self-rotating pinion 26, so that the output shaft 27 can drive the stirring connecting frame 34 to rotate to realize stirring work.

[0026] Further, the fixed gear 21 is connected to the fixed side of the slewing bearing 22, and the slewing side of the slewing bearing 22 is connected to the reduction gearbox lower shell 12, so that the reduction gearbox lower shell 12 can support the fixed connecting seat 7 to rotate through the slewing bearing 22.

[0027] Further, the gap is provided between the upper housing 11 of the reduction gearbox and the fixed connecting seat 7, and the gap is provided with a sealing ring 9, which cooperates with the concave-convex structure of the fixed connecting seat 7 to form a labyrinth, and rotates around the center of the fixed connecting seat 7 without interference, so as to prevent the concrete and dust from entering, and the labyrinth ring is provided with a U-shaped concave-convex step, the concave surface is provided with a plurality of threaded holes, which are used for being installed on the upper housing 11 of the reduction gearbox, so that the lubricating grease can be injected in multiple points in the concave surface, and the lubricating grease can be uniformly attached in the labyrinth gap by rotating the labyrinth ring, so as to achieve the sealing effect of preventing the dust from entering the inside and preventing the oil from leaking out.

[0028] Further, the felt 10 is embedded on the cylindrical surface of the upper housing 11 of the reduction gearbox, and the fixed connecting seat 7 is sealed by extrusion, so as to prevent the lubricating oil in the reduction gearbox from flowing out.

[0029] Further, a plurality of oil injection holes are provided on the fixed connecting seat 7, and the direct plug nozzle 8 is installed on the oil injection hole, and the sealing ring 9 can be regularly injected with grease through the direct plug nozzle 8.

[0030] Further, the upper part of the input shaft 2 is provided with a spline hub, and the lower part is provided with a gear, which forms the inner tooth meshing of the sun gear with the planetary gear 20 and the fixed gear 21, so as to form the planetary system to reduce the speed, and the input shaft 2 can be installed together with the upper reduction gearbox 1 through the spline hub, and the planetary system can be formed through the gear to reduce the speed.

[0031] Further, the surface of the lower planet carrier 14 is provided with threads, which are locked on the lower housing 12 of the reduction gearbox through the gasket b 36 and the locking nut 37, and the dust cover 38 is installed on the lower housing 12 of the reduction gearbox, which is used for locking the locking nut 37 not to be condensed by the concrete, so as to facilitate disassembly and maintenance.

[0032] In use, the various structural components of the composite planetary reduction gearbox are sequentially installed in the inside of the upper planet carrier 13 and the lower planet carrier 14, and then the upper planet carrier 13 and the lower planet carrier 14 are installed and fixed, so that the various structural components can be used in cooperation, the upper reduction gearbox 1 can select the vertical planetary reduction gearbox with different reduction ratios on the market, which is directly inserted into the input shaft 2 to drive the input shaft 2 to rotate, and the input shaft 2 drives the output shaft 27 to rotate through the meshing of the fixed gear 21 and the rotation small gear 26, so that the output shaft 27 can drive the stirring connecting frame 34 to rotate, and then the stirring work can be realized through the stirring connecting frame 34, and the upper reduction gearbox 1 can select the vertical planetary reduction gearbox to be independently installed, which is convenient for maintenance and reduces the cost investment, and it is convenient to select the planetary reduction gearbox with different reduction ratios on the market, and the lower reduction gearbox matched with the upper reduction gearbox 1 rotates around the sun and rotates around the sun at the same time, and contains a primary planet carrier reduction, which can stably further reduce the speed, and the primary planet carrier can be integrally disassembled and taken out for convenient maintenance, so as to reduce the production and maintenance cost of the upper reduction gearbox 1.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compound planetary reduction gearbox comprising an upper reduction gearbox (1) and an input shaft (2), characterized in that: The upper reduction gearbox (1) is movably connected with the input shaft (2), the outer part of the input shaft (2) is sleeved with bearing a (5), the input shaft (2) is rotatably connected with the planet carrier bearing seat (6) through the bearing a (5), the surface of the input shaft (2) is sleeved with the input end cover (3), the input end cover (3) is provided with the skeleton oil seal a (4), the outer side of the planet carrier bearing seat (6) is fixedly connected with the fixed connecting seat (7), the fixed connecting seat (7) is provided with the direct insertion nozzle (8), the bottom end of the fixed connecting seat (7) is provided with the fixed big gear (21), the bottom end of the fixed big gear (21) is provided with the slewing bearing (22), the outer part of the slewing bearing (22) is provided with the reduction gearbox lower shell (12), the upper part of the reduction gearbox lower shell (12) is provided with the reduction gearbox upper shell (11).

2. A compound planetary reduction gearbox according to claim 1, characterized in that: The sealing ring (9) is arranged between the reduction gearbox upper shell (11) and the fixed connecting seat (7), and the surface of the reduction gearbox upper shell (11) is provided with the felt (10).

3. The compound planetary reduction gearbox according to claim 1, characterized in that: The bottom end of the input shaft (2) is driven by the planetary gear (20) and the fixed big gear (21) through gear meshing.

4. The compound planetary reduction gearbox according to claim 1, characterized in that: The inside of the reduction gearbox lower shell (12) is penetrated by the lower planet carrier (14), and the reduction gearbox lower shell (12) is driven to rotate around the center of the slewing bearing (22) through the spline, and the self-rotating pinion (26) is arranged at the center distance of the reduction gearbox upper shell (11) and the reduction gearbox lower shell (12).

5. A compound planetary reduction gearbox according to claim 4, characterised in that: The outside of the self-rotating pinion (26) is penetrated by the output shaft (27), the upper part of the output shaft (27) is provided with the bearing end cover a (23), the bearing b (24) and the spacer ring b (25), the lower part of the output shaft (27) is provided with the bearing c (30), the skeleton oil seal c (31), the bearing end cover b (32) and the spacer ring c (33), and the middle part of the output shaft (27) is provided with the skeleton oil seal b (28).

6. The compound planetary reduction gearbox of claim 1, wherein: The bottom end of the output shaft bearing seat (29) is provided with the cover plate (35), and the output shaft (27) is fixedly connected with the stirring connecting frame (34) through the cover plate (35).

7. The compound planetary reduction gearbox of claim 4, wherein: The bottom end of the lower planet carrier (14) is threadedly connected with the locking nut (37), the inner side of the locking nut (37) is provided with the gasket b (36), the outer side of the locking nut (37) is sleeved with the dust cover (38), the upper planet carrier (13) is arranged on the lower planet carrier (14), the upper planet carrier (13) and the lower planet carrier (14) are connected in an up-down split mode, and the inside of the upper planet carrier (13) is provided with the planetary gear (20).

8. A compound planetary reduction gearbox according to claim 7, characterized in that: The inside of the planetary gear (20) is filled with several needle rollers (18) in upper and lower, and the needle rollers (18) in upper and lower are separated by spacer ring a (19) arranged in the middle, the inside of the planetary gear (20) is penetrated by planetary shaft (16), the upper and lower ends of the planetary gear (20) are installed with notched gasket a (17), the center of the reduction box lower shell (12) is installed with a half-spherical top bead (15).

9. The compound planetary reduction gearbox of claim 1, wherein: The fixed gear (21) is connected to the fixed side of the slewing bearing (22), and the rotating side of the slewing bearing (22) is connected to the reduction box lower shell (12).

10. The compound planetary reduction gearbox of claim 2, wherein: The reduction box upper shell (11) and the fixed connecting seat (7) are provided with a gap in the middle, the gap in the middle is provided with a sealing ring (9), which cooperates with the concave-convex structure of the fixed connecting seat (7) to form a labyrinth, and rotates around the center of the fixed connecting seat (7) without interference, the labyrinth ring is provided with a U-shaped concave-convex step, the concave surface is provided with several threaded holes for installation on the reduction box upper shell (11).

11. The compound planetary reduction gearbox of claim 2, wherein: The felt (10) is embedded in the cylindrical surface of the reduction box upper shell (11).

12. The compound planetary reduction gearbox of claim 1, wherein: The fixed connecting seat (7) is provided with several oil injection holes, and the direct adapter (8) is installed on the oil injection hole.

13. The compound planetary reduction gearbox of claim 1, wherein: The upper part of the input shaft (2) is provided with a spline hub, and the lower part is provided with a gear, forming the inner tooth meshing of the sun gear and the planetary gear (20), the fixed gear (21), and forming the planetary system to reduce speed.

14. The compound planetary reduction gearbox of claim 4, wherein: The surface of the lower planet carrier (14) is provided with threads, which are locked on the reduction box lower shell (12) by gasket b (36) and lock nut (37), and the dust cover (38) is installed on the reduction box lower shell (12).

Images