CN113357320B - Hub reduction gear with two-stage planet carrier double-coupling structure - Google Patents

Hub reduction gear with two-stage planet carrier double-coupling structure Download PDF

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Publication number
CN113357320B
CN113357320B CN202110593068.5A CN202110593068A CN113357320B CN 113357320 B CN113357320 B CN 113357320B CN 202110593068 A CN202110593068 A CN 202110593068A CN 113357320 B CN113357320 B CN 113357320B
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China
Prior art keywords
primary
gear
planet carrier
gear ring
hub
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CN202110593068.5A
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CN113357320A (en
Inventor
李宗�
谢和平
张珂
时维方
鹿飞
宁冉
贾伟
翟许光
陈楚东
顾程鹏
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Xuzhou XCMG Mining Machinery Co Ltd
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Xuzhou XCMG Mining Machinery Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0479—Gears or bearings on planet carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H1/321—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear the orbital gear being nutating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H2001/2881—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two axially spaced central gears, i.e. ring or sun gear, engaged by at least one common orbital gear wherein one of the central gears is forming the output
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Retarders (AREA)

Abstract

The invention discloses a hub reduction gear with a two-stage planet carrier double-coupling structure, and belongs to the technical field of reduction gears. Comprises a frame and a hub; the first-stage sun gear shaft penetrates through the shaft hole of the frame, and the outer end of the first-stage sun gear shaft is connected with the hub through a planetary gear train; the planetary gear train comprises a primary planet carrier, a primary inner gear ring, a primary gear ring support, a secondary sun gear, a secondary planet carrier and a secondary inner gear ring; the first-stage planet carrier and the second-stage planet carrier are fixedly connected with the hub through the torque tube. The two-stage planet gears of the wheel-side reducer can revolve, and the planet gears are sequentially immersed in lubricating oil in the revolution process, so that sufficient lubrication can be realized, the abrasion problem of the gears caused by long-time high-speed rotation and collision is reduced, and the reliability of the mining dump truck is ensured; the inner gear ring is improved into a combined structure of a primary inner gear ring and a secondary inner gear ring, and only the worn gear ring can be replaced, so that the replacement cost is reduced.

Description

Hub reduction gear with two-stage planet carrier double-coupling structure
Technical Field
The invention relates to the technical field of speed reducers, in particular to a hub speed reducer with a two-stage planet carrier double-coupling structure.
Background
The mining dump truck is one of important key devices in the transportation process of a surface mine, and is widely applied to coal mines, iron mines and other mine environments. Mining dump trucks can be generally classified into 2 types according to transmission modes: mechanical transmission and electric transmission. The mining dump truck adopting the mechanical transmission mode has the structure becoming more and more complex along with the increase of tonnage, so that the domestic large-tonnage mining dump truck basically adopts the electric transmission mode. As one of important parts on an electric drive dump truck, a wheel reduction gear plays an important role, and with the trend of upsizing a mining dump truck, the requirement for the reliability of the wheel reduction gear is higher and higher.
The existing hub reduction gear has the following defects:
1. the structure is shown in fig. 2, a gear at the upper end of a lubricating oil liquid level can only stir and splash lubricating oil at the bottom by means of rotation of a gear at the lower end for lubrication, the lubricating oil amount splashed to the gear at the upper end is less, so that the lubricating quality is poor, the abrasion speed of the gear is high, and the service life of the hub reduction gear is greatly shortened correspondingly;
2. because the inner gear ring is integral and is meshed with the primary planet gear and the secondary planet gear, when the inner gear ring is worn, the whole inner gear ring needs to be detached and reinstalled during replacement, and the replacement cost is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides a wheel reduction gear with a two-stage planet carrier double-coupling structure.
The invention is realized by the following technical scheme: a wheel reduction gear with a two-stage planet carrier double-coupling structure comprises a rack and a wheel hub rotatably arranged on the rack; the first-stage sun gear shaft penetrates through the shaft hole of the frame, and the outer end of the first-stage sun gear shaft is connected with the hub through a planetary gear train; the planetary gear train comprises a primary planet carrier and a primary annular gear; the primary planet carrier is fixedly connected with the hub through a torque tube, a primary planet wheel shaft is arranged on the primary planet carrier, and a primary planet wheel is arranged on the primary planet wheel shaft; the primary planet gear is respectively meshed with the primary inner gear ring and the primary sun gear shaft; the planetary gear train also comprises a secondary sun gear, a secondary planet carrier and a secondary annular gear; the secondary sun wheel is sleeved on the primary sun wheel shaft, and a primary gear ring support is fixed at the outer end of the secondary sun wheel; the primary gear ring support is connected with the primary inner gear ring; the secondary planet carrier is fixedly connected with the torque tube, a secondary planet wheel shaft is arranged on the secondary planet carrier, and a secondary planet wheel is arranged on the secondary planet wheel shaft; the secondary planet wheel is respectively meshed with the secondary inner gear ring and the secondary sun gear; the end part of the secondary inner gear ring is connected with a secondary gear ring support, and the secondary gear ring support is fixedly connected with the rack through a mounting pin.
It further comprises the following steps: the first-stage planet wheel is rotationally connected with a first-stage planet wheel shaft through an aligning roller bearing; lubricating oil channels are formed in the first-stage planetary wheels, and lubricating oil in the connection of the first-stage planetary wheels and the first-stage sun wheel shaft gear enters the first-stage planetary wheels through the lubricating oil channels.
And lubricating oil in the connection of the secondary planet wheel and the secondary sun wheel gear enters the interior of the secondary planet wheel through the lubricating oil channel.
The hub is rotatably arranged on the frame through a pair of tapered roller bearings; and a lubricating oil channel is formed at the position, close to the small end, of the frame, and the lubricating oil thrown into the frame by the rotation of the planetary gear train enters the inside of the hub through the lubricating oil channel.
One end of the primary gear ring support is connected with the primary inner gear ring through a spline, and the other end of the primary gear ring support is connected with the secondary sun gear through a spline; the first-stage limiting check ring is fixedly connected with the first-stage inner gear ring through a bolt and used for limiting the axial movement of the first-stage inner gear ring.
And a left adjusting sleeve and a right adjusting sleeve are respectively arranged at two ends of the secondary sun gear.
One end of the secondary gear ring support is fixedly connected with the rack through a mounting pin and a bolt, and the other end of the secondary gear ring support is connected with the secondary inner gear ring through a spline; the second-stage limiting retainer ring is fixedly connected with the second-stage inner gear ring through a bolt and used for limiting the axial movement of the second-stage inner gear ring.
One end of the torque tube is fixed with the hub and the transition plate into a whole through bolts, and the other end of the torque tube is fixedly connected with the primary planet carrier through bolts; the middle inner wall of the torque tube is provided with a protrusion, and a bolt hole is drilled on the protrusion; and the secondary planet carrier is fixedly connected with the torque tube protrusion through a bolt.
The transition plate is fixedly connected with a rim connecting block of the rim assembly through a bolt.
A driving motor is arranged in the rack, and the inner end of the primary sun wheel shaft is connected with the driving motor through a spline; a bulge is arranged at the position, close to the large end, of the rack, a bolt hole is drilled in the bulge, and the brake is fixedly connected with the bulge of the rack through a bolt; the hub is connected with the connecting seat through a bolt, and the hub is fixedly connected with a rim connecting block of the rim assembly through a bolt.
Compared with the prior art, the invention has the beneficial effects that:
1. the two-stage planet gears of the wheel-side reducer can revolve, and the planet gears are sequentially immersed in lubricating oil in the revolution process, so that sufficient lubrication can be realized, the problem of insufficient lubrication caused by the fact that the planet gears do not revolve is solved, the problem of abrasion of the gears due to long-time high-speed rotation and collision is solved, the effective service life of the gears is prolonged, the service life of the wheel-side reducer is prolonged, and the reliability of the mining dump truck is ensured;
2. the design of the inner gear ring is improved into a combined structure of the primary inner gear ring and the secondary inner gear ring, and when the gear ring has a serious abrasion problem, only the abraded gear ring can be replaced, so that the replacement cost is reduced.
Drawings
The invention is explained in more detail below with reference to exemplary embodiments, which are illustrated in the accompanying drawings:
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
in the figure: 1. a frame; 2. a rim assembly; 3. a brake; 4. a coupling seat; 5. a hub; 6. a secondary limiting retainer ring; 7. a torsion tube; 8. a transition plate; 9. a secondary annular gear; 10. a secondary planet carrier; 11. a first-stage limiting retainer ring; 12. a primary gear ring support; 13. a primary annular gear; 14. a primary planet carrier; 15. a primary planet wheel; 16. a primary planet wheel shaft; 17. a primary sun gear shaft; 18. a right adjustment sleeve; 19. a secondary sun gear; 20. a secondary planet wheel shaft; 21. a secondary planet wheel; 22. a left adjustment sleeve; 23. a secondary gear ring support; 24. mounting a pin; 25 floating oil seal sealing seats;
fig. 2 is a structural view of a conventional hub reduction gear.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Referring to fig. 1, a frame 1 is fixed relative to a dump truck, and a hub 5 is rotatably mounted on the frame 1 through a pair of tapered roller bearings. A lubricating oil channel is formed at the position, close to the small end, of the frame 1, lubricating oil thrown into the frame 1 by the rotation of the planetary gear train enters the hub 5 through the lubricating oil channel, and a cylindrical roller bearing between the hub 5 and the frame 1 is lubricated. A driving motor is arranged in the frame 1, a primary sun gear shaft 17 penetrates through a shaft hole of the frame 1, the inner end of the primary sun gear shaft 17 is connected with the driving motor through a spline, and the outer end of the primary sun gear shaft 17 is connected with the hub 5 through a planetary gear train.
In order to realize the braking of the hub 5, a bulge is arranged at the position of the machine frame 1 close to the large end, a bolt hole is drilled on the bulge, and the brake 3 is fixedly connected with the bulge of the machine frame 1 through the bolt. The hub 5 is connected with the connecting seat 4 through bolts. A connecting seat is welded on the rim assembly 2, and the hub 5 is fixedly connected with the connecting seat of the rim assembly 2 through bolts.
One end of the torque tube 7 is fixed with the hub 5 and the transition plate 8 into a whole through bolts, and the other end of the torque tube 7 is fixedly connected with the first-stage planet carrier 14 through bolts. The transition plate 8 is fixedly connected with a rim connecting block of the rim assembly 2 through bolts. The middle inner wall of the torque tube 7 is provided with a protrusion, and a bolt hole is drilled on the protrusion; the secondary planet carrier 10 is fixedly connected with the torque tube 7 through a bolt.
The primary planet carrier 14 is fixedly connected with the hub 5 through the torque tube 7. The primary planetary gear shaft 16 is connected to the primary planetary gear carrier 14 by a bolt. The first-stage planet wheel shaft 16 is provided with a first-stage planet wheel 15 through a self-aligning roller bearing, a lubricating oil channel is formed in the first-stage planet wheel 15, lubricating oil in gear connection between the first-stage planet wheel 15 and the first-stage sun wheel shaft 17 enters the first-stage planet wheel 15 through the lubricating oil channel, and a cylindrical roller bearing between the first-stage planet wheel 15 and the first-stage planet wheel shaft 16 is lubricated. The primary planet wheel 15 is respectively meshed with the primary inner gear ring 13 and the primary sun wheel shaft 17.
One end of the primary gear ring support 12 is connected with the primary inner gear ring 13 through a spline, and the other end of the primary gear ring support 12 is connected with the secondary sun gear 19 through a spline; the primary limiting retainer ring 11 is fixedly connected with the primary inner gear ring 13 through a bolt, and the primary limiting retainer ring 11 is used for limiting the axial movement of the primary inner gear ring 13 and preventing the primary inner gear ring 13 from separating from the primary gear ring support 12.
The secondary sun gear 19 is sleeved on the primary sun gear shaft 17, and a left adjusting sleeve 22 and a right adjusting sleeve 18 are respectively arranged at two ends of the secondary sun gear 19 to adjust the axial position of the secondary sun gear 19. The secondary planet carrier 10 is fixedly connected with the hub 5 through the torsion tube 7. The secondary planet carrier 10 is provided with a secondary planet wheel shaft 20. The secondary planet wheel shaft 20 is provided with a secondary planet wheel 21 through an aligning roller bearing, a lubricating oil channel is formed in the secondary planet wheel 21, and lubricating oil in the gear connection between the secondary planet wheel 21 and the secondary sun wheel 19 enters the interior of the secondary planet wheel 21 through the lubricating oil channel to lubricate the aligning roller bearing in the interior of the secondary planet wheel 21. The secondary planet wheel 21 is respectively meshed with the secondary inner gear ring 9 and the secondary sun wheel 19.
One end of a secondary gear ring support 23 is fixedly connected with the rack 1 through a mounting pin 24 and a bolt, and the other end of the secondary gear ring support 23 is connected with a secondary inner gear ring 9 through a spline; the second-stage limiting retainer ring 6 is fixedly connected with the second-stage inner gear ring 9 through a bolt, and the second-stage limiting retainer ring 6 is used for limiting the axial movement of the second-stage inner gear ring 9.
Pass through bolted connection through torque tube simultaneously with one-level planet carrier and second grade planet carrier in this embodiment to realize the planet carrier coupling, realize following effect: when the torque tube rotates, the first-stage planet carrier and the second-stage planet carrier rotate simultaneously, the first-stage planet carrier drives the first-stage planet gear to revolve in the rotation process, the second-stage planet carrier drives the second-stage planet gear to revolve in the rotation process, and the first-stage planet gear and the second-stage planet gear are sequentially immersed in lubricating oil, so that an engaged gear and a planet gear bearing in the planet gear transmission system are sufficiently lubricated.
The embodiment also improves the structure of the inner gear ring, improves the integral duplex inner gear ring into a two-stage inner gear ring, and reduces the replacement cost of the inner gear ring after being worn.

Claims (10)

1. A wheel hub reducer with a two-stage planet carrier double-coupling structure comprises a rack (1) and a wheel hub (5) rotatably mounted on the rack (1); the primary sun gear shaft (17) penetrates through a shaft hole of the frame (1), and the outer end of the primary sun gear shaft (17) is connected with the hub (5) through a planetary gear train;
the method is characterized in that:
the planetary gear train comprises a primary planet carrier (14) and a primary annular gear (13); the primary planet carrier (14) is fixedly connected with the hub (5) through a torque tube (7), a primary planet wheel shaft (16) is mounted on the primary planet carrier (14), and a primary planet wheel (15) is mounted on the primary planet wheel shaft (16); the primary planet gear (15) is respectively meshed with the primary inner gear ring (13) and the primary sun gear shaft (17);
the planetary gear train also comprises a secondary sun gear (19), a secondary planet carrier (10) and a secondary inner gear ring (9);
the secondary sun gear (19) is sleeved on the primary sun gear shaft (17), and a primary gear ring support (12) is fixed at the outer end of the secondary sun gear (19); the primary gear ring support (12) is connected with the primary inner gear ring (13);
the secondary planet carrier (10) is fixedly connected with the torque tube (7), a secondary planet wheel shaft (20) is arranged on the secondary planet carrier (10), and a secondary planet wheel (21) is arranged on the secondary planet wheel shaft (20); the secondary planet wheel (21) is respectively meshed with the secondary inner gear ring (9) and the secondary sun wheel (19); the end part of the secondary inner gear ring (9) is connected with a secondary gear ring support (23), and the secondary gear ring support (23) is fixedly connected with the rack (1) through a mounting pin.
2. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: the primary planet wheel (15) is rotationally connected with a primary planet wheel shaft (16) through a self-aligning roller bearing; lubricating oil channels are formed in the primary planet wheels (15), and lubricating oil in gear connection between the primary planet wheels (15) and the primary sun wheel shaft (17) enters the primary planet wheels (15) through the lubricating oil channels.
3. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: lubricating oil channels are formed in the secondary planet wheels (21), and lubricating oil in the gear connection between the secondary planet wheels (21) and the secondary sun wheel (19) enters the interior of the secondary planet wheels (21) through the lubricating oil channels.
4. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: the hub (5) is rotatably mounted on the frame (1) through a pair of tapered roller bearings; a lubricating oil channel is formed in the position, close to the small end, of the rack (1), and lubricating oil thrown into the rack (1) by the rotation of the planetary gear train enters the hub (5) through the lubricating oil channel.
5. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: one end of the primary gear ring support (12) is connected with the primary inner gear ring (13) through a spline, and the other end of the primary gear ring support (12) is connected with the secondary sun gear (19) through a spline; the primary limiting retainer ring (11) is fixedly connected with the primary inner gear ring (13) through a bolt, and the primary limiting retainer ring (11) is used for limiting the axial movement of the primary inner gear ring (13).
6. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: and a left adjusting sleeve (22) and a right adjusting sleeve (18) are respectively arranged at two ends of the secondary sun gear (19).
7. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: one end of the secondary gear ring support (23) is fixedly connected with the rack (1) through a mounting pin (24) and a bolt, and the other end of the secondary gear ring support (23) is connected with the secondary inner gear ring (9) through a spline; the secondary limiting retainer ring (6) is fixedly connected with the secondary inner gear ring (9) through a bolt, and the secondary limiting retainer ring (6) is used for limiting the axial movement of the secondary inner gear ring (9).
8. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: one end of the torque tube (7) is fixed with the hub (5) and the transition plate (8) into a whole through bolts, and the other end of the torque tube (7) is fixedly connected with the primary planet carrier (14) through bolts; the middle inner wall of the torque tube (7) is provided with a protrusion, and a bolt hole is drilled on the protrusion; the secondary planet carrier (10) is fixedly connected with the protrusion of the torque tube (7) through a bolt.
9. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 8, characterized in that: the transition plate (8) is fixedly connected with a rim connecting block of the rim assembly (2) through bolts.
10. The hub reduction gear of a two-stage planet carrier double-coupling structure according to claim 1, characterized in that: a driving motor is arranged in the rack (1), and the inner end of the primary sun wheel shaft (17) is connected with the driving motor through a spline; a bulge is arranged at the position, close to the large end, of the rack (1), a bolt hole is drilled on the bulge, and the brake (3) is fixedly connected with the bulge of the rack (1) through a bolt; the hub (5) is connected with the connecting seat (4) through bolts, and the hub (5) is fixedly connected with a rim connecting block of the rim assembly (2) through bolts.
CN202110593068.5A 2021-05-28 2021-05-28 Hub reduction gear with two-stage planet carrier double-coupling structure Active CN113357320B (en)

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CN105465289A (en) * 2015-12-25 2016-04-06 中车戚墅堰机车车辆工艺研究所有限公司 Hub reduction gear
CN106864251A (en) * 2017-02-14 2017-06-20 北京理工大学 Wheel motor drive device
CN108253095A (en) * 2018-03-31 2018-07-06 重庆市江津区宏盛机械制造有限公司 Large-scale heavy duty mining electric truck speed reducer assembly
CN209325000U (en) * 2018-11-22 2019-08-30 明阳智慧能源集团股份公司 The semi-directly driven wind-powered gear-box capacity of gear both sides biasing shunts planetary transmission structure

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JP5450542B2 (en) * 2011-09-12 2014-03-26 日立建機株式会社 Dump truck travel drive device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007002919A (en) * 2005-06-23 2007-01-11 Hitachi Constr Mach Co Ltd Traveling drive device of dump truck
CN104696445A (en) * 2015-03-19 2015-06-10 黄玲艳 Wheel reduction gear
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