CN112060839A - 18 ton fork installation transaxle - Google Patents
18 ton fork installation transaxle Download PDFInfo
- Publication number
- CN112060839A CN112060839A CN202011041121.2A CN202011041121A CN112060839A CN 112060839 A CN112060839 A CN 112060839A CN 202011041121 A CN202011041121 A CN 202011041121A CN 112060839 A CN112060839 A CN 112060839A
- Authority
- CN
- China
- Prior art keywords
- axle housing
- bearing
- wheel
- lug seat
- planet wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000009434 installation Methods 0.000 title claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 238000010862 gear shaping Methods 0.000 claims abstract description 8
- 230000004048 modification Effects 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/18—Arrangement of bearings
-
- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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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
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2380/00—Bearings
- B60B2380/10—Type
- B60B2380/16—Needle bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2380/00—Bearings
- B60B2380/70—Arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/325—Reliability
-
- 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
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H2055/176—Ring gears with inner teeth
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a drive axle of an 18-ton fork loader, which takes an axle housing and a support shaft as bearing parts after being welded, wherein wheel edge assemblies are supported at two sides, a main reducer assembly is arranged in the middle of the axle housing, and the wheel edge assemblies and the main reducer assembly are connected at two sides of a half shaft; the inner hole of the wheel shell is respectively provided with an inner bearing 32028 and an outer bearing 32224 to enhance the bearing capacity, and the wheel shell is supported on the supporting shaft through the two bearings; the axle housing is provided with an axle housing lug seat with axle housing lug seat reinforcing ribs, the wall thickness of the axle housing lug seat reinforcing ribs is 20mm, and the axle housing lug seat reinforcing ribs extend to the edges of the matching surfaces of the frame and the lug seats so as to meet the heavy-load working condition requirement; and the inner gear ring is subjected to reverse modification during machining according to the collected heat treatment deformation trend data during gear shaping, and the tooth part is corrected after heat treatment to improve the precision. The invention solves the problems that the wheel edge supporting bearing in the prior art has insufficient load capacity, and the axle housing lug seat is easy to break and the inner gear ring is easy to crack under heavy load working conditions.
Description
Technical Field
The invention relates to a drive axle of a fork-lift loader, in particular to a drive axle of an 18-ton fork-lift loader.
Background
At present, the trend of development of the forklift loader industry to large tonnage is more and more obvious, wherein the diameters of an inner bearing position and an outer bearing position of a wheel-side support shaft of a drive axle of the forklift loader with 18 tons are respectively
And
32024 and 32221 are selected corresponding inner and outer bearings, the thickness of an axle housing lug reinforcing rib is 16mm, the reinforcing rib is not supported to the edge of the matching surface of the frame lug, and the machining of the inner gear ring gear shaping is not reverse modified. The drive axle of the 18-ton fork loader with the structure has the following defects: the diameters of two bearing positions of the wheel-side support shaft are smaller, the bearing capacity is insufficient, the requirement of heavy-load working conditions cannot be met, and the breakage fault of the support shaft is easily caused; secondly, the thickness of the axle housing lug reinforcing ribs is 16mm, the reinforcing ribs are not supported to the edges of the matching surfaces of the frame lug seats, and the axle housing lug seats are easy to break under heavy load working conditions; thirdly, the tooth part of the inner gear ring is subjected to taper deformation after gear shaping heat treatment, and the gear ring is high in cracking failure rate.
Disclosure of Invention
The invention aims to overcome the defects and provides a drive axle of an 18-ton fork mounting machine, which has the advantages of simple structure, low manufacturing and maintenance cost and long service life, so as to solve the problems of insufficient load capacity of a wheel edge support bearing, easy breakage of an axle housing lug seat and high failure rate of inner gear ring cracking under heavy load working conditions in the prior art.
In order to achieve the purpose, the drive axle of the 18-ton forklift loader adopts an axle housing 3 and a support shaft 5 as a bearing part after being welded, wheel edge assemblies 1 are supported at two sides, a main reducer assembly 4 is installed in the middle of the axle housing 3, and the wheel edge assemblies 1 and the main reducer assembly 4 are connected at two sides of a half shaft 2; the inner hole of the wheel shell 8 is respectively provided with an 32028 inner bearing 6 and a 32224 outer bearing 22 so as to enhance the bearing capacity, and the wheel shell is supported on the support shaft 5 through the two bearings, and a spacer 7 is arranged between the 32224 outer bearing 22 and the support shaft 5; the planet wheel carrier 11 is installed together with the wheel shell 8 through a rim bolt 9, a rim nut 10, and the joint surfaces are sealed through an O-shaped ring 21; an inner hole spline of the inner gear ring 20 is matched with a spline of the support shaft 5 and locked through a round nut 17 on the end surface, and meanwhile, the looseness prevention is carried out through a screw 18; an inner hole of the planet wheel 15 is arranged in an installation hole of the planet wheel carrier 11 through a needle roller 19 and a planet wheel shaft 13, and two end faces of the planet wheel 15 are arranged in an installation hole of the planet wheel carrier 11 through a planet wheel gasket 14, and meanwhile, a steel ball 12 is arranged at the end part of the planet wheel shaft 13 for axial limiting; the axle housing 3 is provided with an axle housing lug seat 23 with axle housing lug seat reinforcing ribs 24, the wall thickness of the axle housing lug seat reinforcing ribs 24 is 20mm, and the axle housing lug seat reinforcing ribs 24 extend to the edge of the matching surface of the frame and the lug seat so as to meet the heavy-load working condition requirement; and the inner gear ring 20 is subjected to reverse modification during machining according to the collected heat treatment deformation trend data during gear shaping, so that the tooth part is corrected after heat treatment to improve the precision.
The drive axle of the 18-ton fork loader with the structure has the following technical characteristics and beneficial effects:
1. the inner and outer bearing positions of the wheel edge supporting shaft adopt larger diameters
And
the bearings are selected from 32028 and 32224 correspondingly, so that the bearing capacity is enhanced, and the strength of the support shaft can meet the requirement of heavy-load working conditions;
2. the thickness of the axle housing lug reinforcing ribs is increased from 16mm to 20mm, and the reinforcing ribs extend to the edges of the matching surfaces of the frame lug seats, so that the strength of the axle housing lug seats can meet the requirement of heavy-load working conditions;
3. and deformation trend data is collected during gear shaping of the internal gear ring, reverse modification is carried out during machining, the tooth part is corrected after heat treatment, and the precision is greatly improved.
4. The manufacturing and maintenance cost is low, and the reliability of the drive axle can be obviously improved.
Drawings
Fig. 1 is a main sectional schematic view of a drive axle of an 18-ton fork-lift truck.
Fig. 2 is a schematic sectional view of a part of the rim portion of fig. 1.
FIG. 3 is a schematic cross-sectional view of the axle housing structure of FIG. 1.
FIG. 4 is a schematic cross-sectional view of the axle housing ear block of FIG. 1.
Fig. 5 is a cross-sectional view of the ring gear in fig. 1.
Reference numerals: the wheel hub assembly 1, the half shaft 2, the axle housing 3, the main reducer assembly 4, the support shaft 5, the 32028 inner bearing 6, the spacer 7, the wheel shell 8, the rim bolt 9, the rim nut 10, the planet wheel carrier 11, the steel ball 12, the planet wheel shaft 13, the planet wheel gasket 14, the planet wheel 15, the sun wheel 16, the round nut 17, the screw 18, the needle roller 19, the inner gear ring 20, the O-shaped ring 21, the 32224 outer bearing 22, the axle housing lug seat 23 and the axle housing lug seat reinforcing rib 24.
Detailed Description
The drive axle of the 18-ton fork-lift truck is further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, an axle housing 3 and a support shaft 5 are welded to serve as a bearing part, wheel edge assemblies 1 are supported at two sides, a main reducer assembly 4 is installed in the middle of the axle housing 3, and the wheel edge assemblies 1 and the main reducer assembly 4 are connected to two sides of a half shaft 2.
Fig. 2 shows a wheel edge part structure of a drive axle of an 18-ton fork-lift loader, wherein an inner hole of a wheel shell 8 is respectively provided with an 32028 inner bearing 6 and a 32224 outer bearing 22, and the wheel shell is supported on a support shaft 5 through the two bearings, and a spacer 7 is arranged between the 32224 outer bearing 22 and the support shaft 5; the planet wheel carrier 11 is installed together with the wheel shell 8 through a rim bolt 9, a rim nut 10, and the joint surfaces are sealed through an O-shaped ring 21; an inner hole spline of the inner gear ring 20 is matched with a spline of the support shaft 5 and locked through a round nut 17 on the end surface, and meanwhile, the looseness prevention is carried out through a screw 18; the inner hole of the planet wheel 15 is arranged in the mounting hole of the planet wheel carrier 11 through a needle roller 19 and a planet wheel shaft 13, and the two end faces of the planet wheel 15 are arranged in the mounting hole through a planet wheel gasket 14, and meanwhile, the end part of the planet wheel shaft 13 is provided with a steel ball 12 for axial limiting.
As shown in fig. 3-4, the axle housing 3 is provided with axle housing ear seats 23 having axle housing ear seat reinforcing ribs 24, the wall thickness of the axle housing ear seat reinforcing ribs 24 is 20mm, and the reinforcing ribs extend to the edges of the matching surfaces of the frame and the ear seats.
And when the inner gear ring 20 shown in the figure 5 is subjected to gear shaping, reverse modification is carried out according to the collected heat treatment deformation trend data, the tooth part is corrected after heat treatment, and the precision is greatly improved.
The principle of the drive axle of the 18-ton forklift loader is that power transmitted by a gearbox is subjected to primary speed reduction through a main speed reducer assembly 4, torque is transmitted to a roadside assembly 1 through a half shaft 2 to be subjected to secondary speed reduction, and finally the power is transmitted to a tire to realize movement.
The invention improves and optimizes the prior art, and the diameters of the inner bearing position and the outer bearing position of the supporting shaft 5 are respectively adopted
And
the 32028 inner bearing 6 and 32224 outer bearing 22 are selected corresponding bearings, and the wall thickness of an axle housing lug reinforcing rib 24 is 20mm, and the reinforcing rib extends to the edge of the matching surface of the frame and the lug; after optimization, the diameters of two bearing positions of the supporting shaft 5 are larger, the bearing capacity is enhanced, and the strength of the supporting shaft meets the requirement of a heavy-load working condition; the axle housing lug reinforcing ribs 24 are thicker in wall thickness, and the rib plates extend to the edges of the lug seats, so that the strength of the axle housing lug seats 23 can meet the requirement of heavy-load working conditions; and when the inner gear ring 20 is subjected to gear shaping, reverse modification is performed according to the collected heat treatment deformation trend data, the tooth part is corrected after heat treatment, and the precision is greatly improved. The invention finally obviously improves the reliability of the drive axle and increases the enterprise income.
Claims (1)
1. A drive axle of an 18-ton fork loader takes an axle housing (3) and a support shaft (5) as bearing parts after being welded, wheel edge assemblies (1) are supported at two sides, a main reducer assembly (4) is installed in the middle of the axle housing (3), and the wheel edge assemblies (1) and the main reducer assembly (4) are connected at two sides of a half shaft (2); an inner bearing (6) and an outer bearing (22) are respectively arranged in an inner hole of the wheel shell (8) and are supported on the supporting shaft (5) through the two bearings, and a spacer bush (7) is arranged between the outer bearing (22) and the supporting shaft (5); the planet wheel carrier (11) is installed together with the wheel shell (8) through a rim bolt (9), a rim nut (10), and joint surfaces are sealed through an O-shaped ring (21); an inner hole spline of the inner gear ring (20) is matched with a spline of the support shaft (5) and locked through a round nut (17) on the end surface, and meanwhile, a screw (18) is used for preventing looseness; an inner hole of the planet wheel (15) is installed in an installation hole of the planet wheel carrier (11) through a rolling needle (19), a planet wheel shaft (13) and two end faces of the planet wheel (15) through a planet wheel gasket (14), and meanwhile, a steel ball (12) is installed at the end part of the planet wheel shaft (13) for axial limiting; the axle housing (3) is provided with an axle housing lug seat (23) with an axle housing lug seat reinforcing rib (24); the method is characterized in that: the inner bearing (6) adopts 32028, and the outer bearing (22) adopts 32224 so as to enhance the bearing capacity; the wall thickness of the axle housing lug seat reinforcing ribs (24) is 20mm, and the axle housing lug seat reinforcing ribs (24) extend to the edges of matching surfaces of the frame and the lug seats so as to meet the requirement of heavy-load working conditions; and the inner gear ring (20) is subjected to reverse modification during machining according to the collected heat treatment deformation trend data during gear shaping, so that the tooth part is corrected after heat treatment to improve the precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041121.2A CN112060839A (en) | 2020-09-28 | 2020-09-28 | 18 ton fork installation transaxle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041121.2A CN112060839A (en) | 2020-09-28 | 2020-09-28 | 18 ton fork installation transaxle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112060839A true CN112060839A (en) | 2020-12-11 |
Family
ID=73683145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011041121.2A Withdrawn CN112060839A (en) | 2020-09-28 | 2020-09-28 | 18 ton fork installation transaxle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112060839A (en) |
-
2020
- 2020-09-28 CN CN202011041121.2A patent/CN112060839A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201211 |
|
| WW01 | Invention patent application withdrawn after publication |