A planetary reducer for a sweeper

Abstract

The utility model provides a kind of planetary reducer for sweeper, including reducer body, disc brush, reducer body includes main casing, the center of main casing is rotatably provided with planet carrier, lock brush jack is opened on the lower end surface of planet carrier, a plurality of lock brush side holes are opened on the hole wall of lock brush jack, disc brush includes brush disc, bristle, the center of brush disc is opened with the central hole of lock brush jack alignment, central hole is equipped with lock brush ware, lock brush ware includes protective shell, after protective shell passes through central hole and is inserted with lock brush jack, the lower part of the outer side wall of protective shell is equipped with and brush disc bottom surface is resisted lower shell plate, lock brush guide hole is opened on the side wall of protective shell, lock brush slide buckle is slidably arranged in lock brush guide hole, push or pull lock brush slide buckle and make reciprocating linear motion along lock brush guide hole in the dynamic buckle assembly of protective shell. The planetary reducer for sweeper is coaxially connected with disc brush and planet carrier by lock brush ware, reduce the axial assembly volume between disc brush and planet carrier.

Description

Technical Field

[0001] This utility model relates to the technical field of speed reducers, and in particular to a planetary speed reducer for a sweeper. Background Technology

[0002] A sweeper is an integrated garbage sweeper that combines sweeping and vacuuming. It has the advantages of high work efficiency, low cleaning cost, good cleaning effect and high economic return. It has been widely used in the cleaning of roads in cities of all sizes.

[0003] The existing Chinese patent with authorization announcement number CN209816749U discloses an assembly for improving the operating efficiency of the front brush motor of a sweeper, including a motor, a planetary reducer, and a disc brush. The output end of the motor is connected to the input end of the planetary reducer, and the output end of the planetary reducer is connected to the disc brush. The motor drives the disc brush to rotate after being driven by the planetary reducer.

[0004] The existing technical solutions mentioned above have the following drawbacks: In the traditional sweeper's disc brush drive system, the planetary reducer is connected to the disc brush through a long extended shaft. As the output end, the long shaft usually needs to transmit power through connecting parts such as transition flanges and couplings, which increases the axial assembly volume, restricts the compact design of the sweeper body, and makes it difficult to meet the development needs of miniaturization of sweepers. Utility Model Content

[0005] The present invention aims to address the aforementioned shortcomings in the prior art by providing a planetary reducer for sweeping vehicles, which solves the problem of excessive axial assembly volume between the disc brush and the planetary reducer in the prior art.

[0006] The above-mentioned utility model objective is achieved through the following technical solution: a planetary reducer for a sweeper vehicle, comprising a reducer body and a disc brush disposed on the output end of the reducer body. The reducer body includes a main housing, and a planetary carrier serving as the output end is rotatably disposed at the center of the main housing. A locking brush insertion hole is provided on the lower end face of the planetary carrier, and a plurality of locking brush side holes are provided on the hole wall of the locking brush insertion hole. The disc brush includes a brush disc that fits against the lower end face of the planetary carrier and brush bristles disposed below the brush disc. A central hole aligned with the locking brush insertion hole is provided at the center of the brush disc, and a locking brush device is inserted through the central hole. The locking brush device includes a protective shell, which is inserted into the locking brush insertion hole after passing through the central hole. A lower shell plate abutting against the bottom surface of the brush disc is provided on the lower part of the outer side wall of the protective shell. A locking brush guide hole is provided on the side wall of the protective shell, and a locking brush sliding buckle is slidably disposed in the locking brush guide hole. A movable buckle assembly is provided inside the protective shell to push or pull the locking brush sliding buckle to reciprocate linearly along the locking brush guide hole.

[0007] The present invention is further configured such that: the inner cavity of the protective shell is provided; the movable buckle assembly includes a movable buckle central shaft, an inner shaft plate, and a hinge connecting rod; the movable buckle central shaft is rotatably disposed at the center of the inner cavity; the inner shaft plate is coaxially disposed on the movable buckle central shaft; an outer buckle plate is provided on the end face of the lock brush sliding buckle that extends into the inner cavity; one end of the hinge connecting rod is hinged to the outer buckle plate by a pin passing through the outer buckle plate, and the other end is hinged to the inner shaft plate by a pin passing through the inner shaft plate.

[0008] The present invention is further configured such that: a lower hole is provided on the bottom surface of the protective shell, the movable buckle central shaft extends out of the inner cavity through the lower hole, and a handwheel is coaxially provided after the movable buckle central shaft passes through the lower hole.

[0009] The present invention is further configured such that: an upper coaxial turntable is coaxially provided at the upper end of the movable buckle central shaft, and a lower coaxial turntable is coaxially provided at the lower end of the movable buckle central shaft; the upper and lower coaxial turntables rotate and cooperate with the inner cavity; the upper coaxial turntable abuts against the upper end wall of the inner cavity, and the lower coaxial turntable abuts against the lower end wall of the inner cavity.

[0010] The present invention is further configured such that: a locking screw hole is provided on the side wall of the lower coaxial turntable, and a through screw hole is provided on the outer side wall of the protective shell, and a hand-tightening screw that is threadedly connected to the locking screw hole is inserted in the through screw hole.

[0011] The present invention is further configured such that: the inner wall of the main housing has an internal gear ring, a plurality of spindles are interference-fitted on the planetary carrier, planetary gears are rotatably mounted on the spindles, and a sun gear is rotatably mounted at the center of the planetary carrier, and the planetary gears mesh with both the sun gear and the internal gear ring.

[0012] The present invention is further configured such that: a lower groove is provided on the lower end face of the main housing, an outer lower bearing is interference-fitted into the lower groove, the outer lower bearing is sleeved on the lower end of the planetary carrier, a lower bearing groove is provided on the upper end face of the main housing, an outer upper bearing is embedded in the lower bearing groove, and the outer upper bearing is sleeved on the upper end of the planetary carrier.

[0013] The present invention is further configured such that: a lower sealing ring located below the outer lower bearing is interference-fitted into the lower groove, and the lower sealing ring is sleeved on the lower end of the planetary carrier.

[0014] The present invention is further configured such that: a motor flange is provided at the upper end of the main housing, an input shaft sleeve is rotatably provided at the center of the motor flange, and a sun gear is interference-fitted onto the input shaft sleeve.

[0015] The present invention is further configured such that: a gradually narrowing upper bearing groove and an upper recess are sequentially opened on the lower end face of the motor flange, an inner upper bearing is interference-fitted into the upper recess, the inner upper bearing is sleeved on the upper end of the input shaft sleeve, and a lower shaft body extending into the planetary carrier is coaxially fixed to the lower end of the input shaft sleeve, and an inner lower bearing sleeved on the lower shaft body is interference-fitted into the planetary carrier.

[0016] In summary, the beneficial technical effects of this utility model are as follows: the planetary reducer for this sweeper connects the disc brush and the planetary carrier coaxially through the brush lock, which reduces the axial assembly volume between the disc brush and the planetary carrier, which is conducive to the compact design of the sweeper body and meets the development needs of miniaturization of sweepers. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the planetary reducer for a sweeper in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of each component inside the main housing in this utility model;

[0019] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the lock brush device in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of each component inside the lock brush in this utility model.

[0022] In the above attached figures: 1. Reducer body; 2. Main housing; 3. Motor flange; 4. Internal gear ring; 5. Planetary carrier; 6. Spindle; 7. Planetary gear; 8. Needle roller bearing; 9. Sun gear; 10. Lower groove; 11. Outer lower bearing; 12. Lower sealing ring; 13. Lower bearing groove; 14. Outer upper bearing; 15. Input shaft sleeve; 16. Upper bearing groove; 17. Upper groove; 18. Inner upper bearing; 19. Lower shaft; 20. Inner lower bearing; 21. Upper sealing ring; 22. Snap ring groove; 23. Limiting snap ring; 24. 25. Brush insertion hole; 26. Brush side hole; 27. Disc brush; 28. Brush disc; 29. ​​Center hole; 30. Brush bristles; 31. Brush locker; 32. Protective shell; 33. Half shell; 34. Inner cavity; 35. Lower shell plate; 36. Brush guide hole; 37. Brush sliding buckle; 38. Outer buckle plate; 39. Moving buckle central shaft; 40. Inner shaft plate; 41. Hinge connecting rod; 42. Pin; 43. Lower hole; 44. Handwheel; 45. Upper coaxial turntable; 46. Lower coaxial turntable; 47. Locking disc screw hole; 48. Through pin hole; 49. Hand-tightening screw. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, this utility model proposes a planetary reducer for a sweeper, including a reducer body 1, a disc brush 26 disposed on the output end of the reducer body 1, and a brush locker 30.

[0025] like Figure 1 As shown, the reducer body 1 includes a main housing 2 and a motor flange 3.

[0026] like Figure 1 and 2 As shown, the inner wall of the main housing 2 has an internal gear ring 4, and the main housing 2 contains a planet carrier 5, planetary gears 7, and a sun gear 9. The planet carrier 5 is rotatably located at the center of the main housing 2, and serves as the output end of the reducer body 1. Three equidistant circumferentially stitched mandrels 6 are interference-fitted onto the planet carrier 5, and the planetary gears 7 are rotatably mounted on the mandrels 6 via needle roller bearings 8. The sun gear 9 is rotatably located at the center of the planet carrier 5, and serves as the power input component, meshing with the three outer planetary gears 7. The three planetary gears 7 simultaneously mesh with the outer internal gear ring 4.

[0027] When the sun gear 9 rotates, the three planetary gears 7 that mesh with it rotate accordingly. Since the internal gear ring 4 inside the main housing 2 remains fixed, the three planetary gears 7 will revolve around the internal gear ring 4 while rotating around the spindle 6, thereby driving the planet carrier 5 that carries the planetary gears 7 to rotate around the central axis.

[0028] like Figure 1 and 2 As shown, a lower groove 10 is formed on the lower end face of the main housing 2. An outer lower bearing 11 is interference-fitted into the lower groove 10 and is sleeved on the lower end of the planetary carrier 5. The outer lower bearing 11 is used to support the rotation of the planetary carrier 5. A lower sealing ring 12 is interference-fitted into the lower groove 10. The lower sealing ring 12 is located below the outer lower bearing 11 and is sleeved on the lower end of the planetary carrier 5. The lower sealing ring 12 is a lip seal. A lower bearing groove 13 is formed on the upper end face of the main housing 2. An outer upper bearing 14 is embedded in the lower bearing groove 13. The upper part of the outer upper bearing 14 protrudes from the lower bearing groove 13 and is sleeved on the upper end of the planetary carrier 5. The outer upper bearing 14 is used to support the rotation of the planetary carrier 5.

[0029] like Figure 1 and 2As shown, the motor flange 3 is screwed to the upper end of the main housing 2. An input shaft sleeve 15 is rotatably mounted at the center of the motor flange 3, and the sun gear 9 is interference-fitted onto the input shaft sleeve 15. When the motor flange 3 is connected to the motor flange 3, the motor shaft and the input shaft sleeve 15 are coaxially connected, and the motor drives the sun gear 9 to rotate through the input shaft sleeve 15.

[0030] like Figure 1 and 2 As shown, the lower end face of the motor flange 3 has a tapered upper bearing groove 16 and an upper recess 17 sequentially formed upwards. The upper part of the outer upper bearing 14 is embedded in the upper bearing groove 16, and the motor flange 3 presses and fixes the outer upper bearing 14 in the lower bearing groove 13. An inner upper bearing 18 is interference-fitted into the upper recess 17 and is sleeved on the upper end of the input shaft sleeve 15. The inner upper shaft sleeve is used to support the rotation of the input shaft sleeve 15. The lower end of the input shaft sleeve 15 is coaxially fixed to a lower shaft body 19 that extends into the planetary carrier 5. An inner lower bearing 20 is interference-fitted into the planetary carrier 5 and is sleeved on the lower shaft body 19. The inner lower bearing 20 is used to support the lower end of the input shaft sleeve 15.

[0031] like Figure 1 and 2 As shown, an upper sealing ring 21 is interference-fitted into the upper groove 17. The upper sealing ring 21 is sleeved on the upper end of the input shaft sleeve 15 and is located below the inner upper bearing 18. The upper sealing ring 21 is a lip seal.

[0032] like Figure 1 and 2 As shown, a retaining ring groove 22 is provided circumferentially on the outer side wall of the input bushing 15. A limiting retaining ring 23 is nested in the retaining ring groove 22. The outer diameter of the limiting retaining ring 23 is larger than the diameter of the retaining ring groove 22. The part of the limiting retaining ring 23 that protrudes from the retaining ring groove 22 is located between the inner upper bearing 18 and the upper sealing ring 21. The limiting retaining ring 23 is used to restrict the axial sliding of the input bushing 15.

[0033] like Figure 3 As shown, a circular locking brush insertion hole 24 is provided at the center of the lower end face of the planetary carrier 5. The locking brush insertion hole 24 is coaxial with the planetary carrier 5, and two locking brush side holes 25 are symmetrically provided on the hole wall of the locking brush insertion hole 24. The disc brush 26 includes a brush disc 27 and brush bristles 29. The brush disc 27 is disc-shaped, and a central hole 28 coaxial with the brush disc 27 is provided through the center of the brush disc 27. The brush bristles 29 are evenly distributed on the outer side of the lower end face of the brush disc 27.

[0034] like Figure 3 and 4As shown, a locking brush 30, which is inserted into the locking brush insertion hole 24, passes through the central hole 28. The locking brush 30 includes a cylindrical protective shell 31, which is inserted into the locking brush insertion hole 24 after passing through the central hole 28. The protective shell 31 is composed of two half-shells 311 spliced ​​together. The protective shell 31 has a cylindrical inner cavity 32 inside, which is split in half on the two half-shells 311. A lower shell plate 33 is fixedly connected to the lower part of the outer wall of the protective shell 31. The lower shell plate 33 has an annular cross-section and is split in half on the two half-shells 311. The lower shell plate 33 can abut against the bottom surface of the brush plate 27.

[0035] like Figure 4 As shown, a brush guide hole 34 is provided on the upper part of the outer side wall of the protective shell 31. There are two brush guide holes 34, which are opened in half on the two half shells 311. A brush lock buckle 35 is slidably provided in each brush guide hole 34. An outer buckle plate 36 is fixedly connected to the end face of the brush lock buckle 35 that extends into the inner cavity 32.

[0036] like Figure 3 and 5 As shown, a movable buckle assembly is provided in the inner cavity 32. The movable buckle assembly is used to push or pull the lock brush slide buckle 35 to reciprocate linearly along the lock brush guide hole 34. The movable buckle assembly includes a movable buckle central shaft 37, an inner shaft plate 38, and a hinged connecting rod 39.

[0037] like Figure 3 and 5 As shown, the movable buckle central shaft 37 is cylindrical and rotatably positioned at the center of the inner cavity 32. The inner shaft plate 38 is circular and coaxially fixedly connected to the movable buckle central shaft 37. One end of the hinge connecting rod 39 is hinged to the outer buckle plate 36 via a pin 40 passing through it, and the other end is hinged to the inner shaft plate 38 via a pin 40 passing through it.

[0038] like Figure 3 and 5 As shown, a circular lower hole 41, coaxial with the inner cavity 32, is provided on the bottom surface of the protective shell 31. The lower end of the movable buckle shaft 37 extends out of the inner cavity 32 through the lower hole 41, and the movable buckle shaft 37 is rotatably engaged with the lower hole 41. After the movable buckle shaft 37 passes through the lower hole 41, a handwheel 42 is fixedly connected to it. The handwheel 42 is used to provide a force point for the worker to rotate the movable buckle shaft 37. The handwheel 42 is a cross handwheel.

[0039] like Figure 3 and 5As shown, a disc-shaped upper coaxial turntable 43 is coaxially fixed to the upper end of the movable buckle shaft 37, and a disc-shaped lower coaxial turntable 44 is coaxially fixed to the lower end of the movable buckle shaft 37. The upper coaxial turntable 43 and the lower coaxial turntable 44 are rotatably engaged with the inner cavity 32. The upper coaxial turntable 43 abuts against the upper end wall of the inner cavity 32, and the lower coaxial turntable 44 abuts against the lower end wall of the inner cavity 32, thereby restricting the axial runout of the movable buckle shaft 37.

[0040] like Figure 3 and 5 As shown, a locking screw hole 45 is provided on the side wall of the lower coaxial turntable 44, and a through screw hole 46 is provided on the outer side wall of the protective shell 31. The through screw hole 46 is provided in half on the two half shells 311. The through screw hole 46 can be aligned with the locking screw hole 45. A hand screw 47 is inserted in the through screw hole 46 and is threadedly connected to the locking screw hole 45.

[0041] In this embodiment, the detailed installation process of the brush 26 is as follows: The worker attaches the top surface of the brush 27 to the bottom surface of the planetary carrier 5, and aligns the center hole 28 with the brush locking hole 24. Then, the protective shell 31 is inserted through the center hole 28 and into the brush locking hole 24 until the lower shell plate 33 abuts against the bottom surface of the brush 27. Then, while rotating the protective shell 31, the worker rotates the movable buckle central shaft 37 through the handwheel 42 until the brush locking guide hole 34 is aligned with the brush locking side hole 25. At this time, the movable buckle central shaft 37 is driven to rotate by the handwheel 42, which in turn drives the inner shaft plate 38 to rotate. The rotation of the inner shaft plate 38 will push the brush locking buckle 35 out of the brush locking guide hole 34 and into the brush locking side hole 25 through the hinge connecting rod 39. Then, the worker passes the hand screw 47 through the through screw hole 46 and tightens it.

[0042] The planetary reducer used in this sweeper connects the disc brush 26 and the planetary carrier 5 coaxially via the brush lock 30, reducing the axial assembly volume between the disc brush 26 and the planetary carrier 5. This facilitates the compact design of the sweeper body and meets the development needs of miniaturization of sweepers.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A planetary reducer for a sweeper, comprising a reducer body (1) and a disc brush (26) disposed on the output end of the reducer body (1), wherein the reducer body (1) comprises a main housing (2), and a planetary carrier (5) serving as the output end is rotatably disposed at the center of the main housing (2), characterized in that: The lower end face of the planetary carrier (5) is provided with a locking brush insertion hole (24), and the wall of the locking brush insertion hole (24) is provided with a plurality of locking brush side holes (25). The disc brush (26) includes a brush disc (27) that fits against the lower end face of the planetary carrier (5) and brush bristles (29) disposed below the brush disc (27). A central hole (28) aligned with the locking brush insertion hole (24) is provided at the center of the brush disc (27), and a locking brush device (30) passes through the central hole (28). The locking brush device (30) Includes a protective shell (31), which passes through the central hole (28) and is inserted into the lock brush insertion hole (24). The lower part of the outer side wall of the protective shell (31) is provided with a lower shell plate (33) that abuts against the bottom surface of the brush plate (27). A lock brush guide hole (34) is provided on the side wall of the protective shell (31). A lock brush slide buckle (35) is slidably arranged in the lock brush guide hole (34). A movable buckle assembly is provided inside the protective shell (31) to push or pull the lock brush slide buckle (35) to make reciprocating linear motion along the lock brush guide hole (34).

2. The planetary reducer for a sweeper according to claim 1, characterized in that: The protective shell (31) has an inner cavity (32). The movable buckle assembly includes a movable buckle central shaft (37), an inner shaft plate (38), and a hinged connecting rod (39). The movable buckle central shaft (37) is rotatably disposed at the center of the inner cavity (32). The inner shaft plate (38) is coaxially disposed on the movable buckle central shaft (37). The end face of the lock brush sliding buckle (35) extending into the inner cavity (32) is provided with an outer buckle plate (36). One end of the hinged connecting rod (39) is hinged to the outer buckle plate (36) through a pin (40) passing through the outer buckle plate (36), and the other end is hinged to the inner shaft plate (38) through a pin (40) passing through the inner shaft plate (38).

3. The planetary reducer for a sweeper according to claim 2, characterized in that: The bottom surface of the protective shell (31) is provided with a lower hole (41), and the movable buckle shaft (37) extends out of the inner cavity (32) through the lower hole (41). After the movable buckle shaft (37) passes through the lower hole (41), a handwheel (42) is coaxially arranged.

4. A planetary reducer for a sweeper according to claim 2, characterized in that: The upper end of the movable buckle shaft (37) is coaxially provided with an upper coaxial turntable (43), and the lower end of the movable buckle shaft (37) is coaxially provided with a lower coaxial turntable (44). The upper coaxial turntable (43) and the lower coaxial turntable (44) are rotatably engaged with the inner cavity (32). The upper coaxial turntable (43) abuts against the upper end wall of the inner cavity (32), and the lower coaxial turntable (44) abuts against the lower end wall of the inner cavity (32).

5. A planetary reducer for a sweeper according to claim 4, characterized in that: The lower coaxial turntable (44) has a locking screw hole (45) on its side wall, and the outer side wall of the protective shell (31) has a through screw hole (46). A hand screw (47) that is threaded into the through screw hole (46) is threaded into the locking screw hole (45).

6. A planetary reducer for a sweeper according to claim 1, characterized in that: The inner wall of the main housing (2) has an internal gear ring (4), and a number of spindles (6) are interference-fitted on the planet carrier (5). Planetary gears (7) are rotatably mounted on the spindles (6). A sun gear (9) is rotatably mounted at the center of the planet carrier (5). The planetary gears (7) mesh with both the sun gear (9) and the internal gear ring (4).

7. A planetary reducer for a sweeper according to claim 6, characterized in that: The lower end face of the main housing (2) is provided with a lower groove (10), and an outer lower bearing (11) is interference-fitted into the lower groove (10). The outer lower bearing (11) is sleeved on the lower end of the planetary carrier (5). The upper end face of the main housing (2) is provided with a lower bearing groove (13), and an outer upper bearing (14) is embedded in the lower bearing groove (13). The outer upper bearing (14) is sleeved on the upper end of the planetary carrier (5).

8. A planetary reducer for a sweeper according to claim 7, characterized in that: The lower groove (10) is fitted with a lower sealing ring (12) located below the outer lower bearing (11), and the lower sealing ring (12) is sleeved on the lower end of the planetary carrier (5).

9. A planetary reducer for a sweeper according to claim 6, characterized in that: The upper end of the main housing (2) is provided with a motor flange (3), and an input shaft sleeve (15) is rotatably provided at the center of the motor flange (3). The sun gear (9) is interference-fitted onto the input shaft sleeve (15).

10. A planetary reducer for a sweeper according to claim 9, characterized in that: The lower end face of the motor flange (3) is provided with a gradually narrowing upper bearing groove (16) and an upper groove (17) in sequence. An inner upper bearing (18) is interference-fitted in the upper groove (17). The inner upper bearing (18) is sleeved on the upper end of the input shaft sleeve (15). The lower end of the input shaft sleeve (15) is coaxially fixed to a lower shaft body (19) that extends into the planetary carrier (5). An inner lower bearing (20) is interference-fitted in the planetary carrier (5) and sleeved on the lower shaft body (19).

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