CN203685998U - Rotation speed reducer for excavator - Google Patents
Rotation speed reducer for excavator Download PDFInfo
- Publication number
- CN203685998U CN203685998U CN201420024747.6U CN201420024747U CN203685998U CN 203685998 U CN203685998 U CN 203685998U CN 201420024747 U CN201420024747 U CN 201420024747U CN 203685998 U CN203685998 U CN 203685998U
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- Prior art keywords
- oil
- gear
- speed reducer
- level
- hole
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Abstract
The utility model belongs to the technical field of excavators and discloses a rotation speed reducer for the excavator. The rotation speed reducer is formed by sequentially connecting a hydraulic motor, a multi-stage planetary gear speed reduction mechanism and an output gear from top to bottom. The multi-stage planetary gear speed reduction mechanism comprises a gear ring. A motor connection plate, the gear ring and a bearing base are in rigid connection to form a closed case. An output shaft of the hydraulic motor is in rigid connection with the input stage of the multi-stage planetary gear speed reduction mechanism. The output stage of the multi-stage planetary gear speed reduction mechanism is in rigid connection with a gear shaft. According to the rotation speed reducer, the combination of a needle bearing and a sliding bearing of a holder without an inner ring and an outer ring is adopted in an internal planetary bearing, the motor connection plate is provided with an oil level indicator, and therefore the rotation speed reducer is compact in structure after installation, high in bearing capacity and shock resistance and convenient to maintain daily.
Description
Technical field
The utility model relates to a kind of rotary reducer being applicable on excavator, belongs to excavator technical field.
Background technique
At present, excavator not only can, for excavating cubic metre of earth, be changed bucket and be changed rock drilling device into and be also widely used in the occasions such as building removal, rigid pavement fragmentation, due to its purposes widely, has determined its applying working condition very severe.Swirl gear is as the key equipment of excavator, complete machine functional reliability has been played to vital effect, swirl gear is conventionally again by pivoting support, rotary reducer and oil hydraulic motor composition, owing to being applicable to, rotary reducer operating mode on excavator is severe, and existing rotary reducer is generally only only applicable to the less demanding occasion of the applying working condition such as truck crane, crawler crane.And its applying working condition of swivel gear on excavator is far away higher than the workplace of the said equipment, this has just determined to use swivel gear thereon not only will guarantee the reliability of its work but also will guarantee the convenience that its high load strength requires and current check is safeguarded.
Model utility content
In order to overcome above-mentioned the deficiencies in the prior art part, the utility model provides a kind of excavator rotary reducer, mounted configuration compactness, and bearing capacity is strong, and impact resistance is high, and current check is easy to maintenance.
The utility model is achieved by the following technical solution: a kind of excavator rotary reducer, it is mainly by oil hydraulic motor, multi-level planet gear speed reducer structure, gear shaft and output gear form according to being linked in sequence from top to bottom, described multi-level planet gear speed reducer structure comprises a double gear ring that does shell, between the upper end of gear ring and oil hydraulic motor, be connected with motor land, the lower end of gear ring is connected with bearing support, described motor land, gear ring and bearing support are rigidly connected and form airtight housing, the input stage of the output shaft of described oil hydraulic motor and described multi-level planet gear speed reducer structure is rigidly connected, the output stage of multi-level planet gear speed reducer structure and described gear shaft are rigidly connected, gear shaft is rotating to be arranged in described bearing support.
Between the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure and planet wheel, install without Internal and external cycle needle bearing, comprise retainer without Internal and external cycle needle bearing, needle roller is housed on retainer, between the described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade and planet wheel, sliding bearing is installed.
On the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure, be manufactured with the radial direction oil I and the axial oil duct I that are communicated with oil pocket, on the described described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade, be manufactured with the radial direction oil II and the axial oil duct II that are communicated with oil pocket.
Every one-level transmission of described multi-level planet gear speed reducer structure all adopts squirrel-cage planet carrier structure.
On described motor land, with oil scale, in the described housing being formed by motor land, gear ring and bearing support, be manufactured with oil level test hole corresponding with oil scale and that be connected with gear oil pocket.
Described oil level test hole comprises the through hole that is produced on described gear ring one side, through hole is parallel with the axis of gear ring, on the seam of described bearing support, be manufactured with the breach that is communicated with through hole and gear oil pocket, on described motor land, be manufactured with the tapped hole that is communicated with through hole, connecting tube has been threaded on tapped hole, described oil scale inserts in connecting tube and stretches in described through hole, and cone rubber piece is arranged at the top of oil scale, and fluid upper limit mark and fluid lower limit mark are arranged at the bottom of oil scale.
The beneficial effects of the utility model are:
1, the inner transmission of speed reducer of the present utility model adopts multi-stage planetary gear structure, and every one-level transmission all adopts squirrel-cage planet carrier structure, has greatly improved the transmitting torque of speed reducer; Internal rows bearing of planetary gear adopts and is used in combination without needle bearing and two kinds of bearings of sliding bearing of inside and outside astragal retainer, input stage (level at a high speed) adopts the needle bearing without inside and outside astragal retainer, intergrade and output stage (slow speed turbine stage) are because the lower bearing torque of rotating speed is larger, adopt sliding bearing, the feature of these two kinds of bearing structures be all self take up room little, bearing capacity is strong, can reduce to greatest extent the inner driving gear of speed reducer volume, be beneficial to and increase gear wall thickness, in limited space, increase the intensity of gear.Planetary pinion and the planet wheel shaft supporting with these two kinds of bearings need to pass through carburizing and quenching and fine-grinding and polishing processing, to guarantee that it has enough hardness and higher degree of finish.
2, traditional excavator speed reducer position is narrow, narrow space, bad control oil level, and on motor land of the present utility model with oil level scale, can check more easily box body of speed reducer internal gear oil oil level, on the motor land of speed reducer, have tapped hole, in order to fixing oil scale, on the gear ring combining with motor land, have through hole, this through hole upper end communicates with the tapped hole on motor land, lower end communicates with the breach at bearing support junction plane place, guarantee that speed reducer is installed the gear oil oil level of rear inside and the oil level of oil scale position maintains an equal level, conveniently speed reducer is carried out to current check maintenance.
Accompanying drawing explanation
According to drawings and embodiments the utility model is further illustrated below.
Fig. 1 is the utility model structural representation;
Fig. 2 is the I place partial enlarged drawing of Fig. 1;
Fig. 3 is the oil scale position partial enlarged drawing of Fig. 1.
In figure, 1, output gear, 1-1, gear shaft, 2, bearing support, 2-1, breach, 3, secondary planet frame, 4, secondary center wheel, 5, gear ring, 5-1, through hole, 6, primary planet carrier, 7, primary centre wheel, 8, oil scale, 8-1, dipstick, 8-2, connecting tube, 8-3a, fluid upper limit mark, 8-3b, fluid lower limit mark, 8-4, cone rubber piece, 9, motor land, 9-1, tapped hole, 10, oil hydraulic motor, 11, without Internal and external cycle needle bearing, 11-1, retainer, 11-2, needle roller, 12, one-level planet wheel, 13, one-level planet wheel shaft, 14, sliding bearing, 15, secondary planet wheel, 16, secondary planet wheel shaft, a, radial direction oil I, b, axial oil duct I, c, radial direction oil II, d, axial oil duct II.
Embodiment
Below in conjunction with embodiment, the utility model is further illustrated.
A kind of excavator rotary reducer as shown in Figure 1, it is mainly by oil hydraulic motor 10, multi-level planet gear speed reducer structure, gear shaft 1-1 and output gear 1 form according to being linked in sequence from top to bottom, described multi-level planet gear speed reducer structure comprises a double gear ring 5 that does shell, between the upper end of gear ring 5 and oil hydraulic motor 10, be connected with motor land 9, the lower end of gear ring 5 is connected with bearing support 2, described motor land 9, gear ring 5 and bearing support 2 are rigidly connected and form airtight housing, the input stage of the output shaft of described oil hydraulic motor 10 and described multi-level planet gear speed reducer structure is rigidly connected, the output stage of multi-level planet gear speed reducer structure and described gear shaft 1-1 are rigidly connected, gear shaft 1-1 is rotating to be arranged in described bearing support 2.
As shown in Figure 2, between the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure and planet wheel, install without Internal and external cycle needle bearing 11, comprise retainer 11-1 without Internal and external cycle needle bearing 11, needle roller 11-2 is housed on retainer 11-1, between the described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade and planet wheel, sliding bearing 14 is installed.
As shown in Figure 2, on the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure, be manufactured with the radial direction oil I a and the axial oil duct I b that are communicated with oil pocket, on the described described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade, be manufactured with the radial direction oil II c and the axial oil duct II d that are communicated with oil pocket.
Every one-level transmission of described multi-level planet gear speed reducer structure all adopts squirrel-cage planet carrier structure.
On motor land 9 as shown in Figure 1, Figure 3, with oil scale 8, in the described housing being formed by motor land 9, gear ring 5 and bearing support 2, be manufactured with oil level test hole corresponding with oil scale 8 and that be connected with gear oil pocket.Described oil level test hole comprises the through hole 5-1 that is produced on described gear ring 5 one sides, through hole 5-1 is parallel with the axis of gear ring 5, on the seam of described bearing support 2, be manufactured with the breach 2-1 that is communicated with through hole 5-1 and gear oil pocket, on described motor land 9, be manufactured with the tapped hole 9-1 that is communicated with through hole 5-1, connecting tube 8-2 has been threaded on tapped hole 9-1, described oil scale 8 inserts in connecting tube 8-2 and stretches in described through hole 5-1, cone rubber piece 8-4 is arranged at the top of oil scale 8, fluid upper limit mark 8-3a and fluid lower limit mark 8-3b are arranged at the bottom of oil scale 8.
The utility model working principle:
1, transmission system
As shown in Figure 1, adopt two-stage planet gear transmission, speed reducer power source is inputted by oil hydraulic motor 10, be connected with primary centre wheel 7 by the involute splines on motor 10 output shafts, drive 7 rotations of primary centre wheel, then drive one-level planet wheel 12 to rotate, one-level planet wheel 12 adopts the processing of 20CrMnTi carburizing and quenching, and fine-grinding and polishing endoporus, guarantee that endoporus roughness Ra is not more than 0.4 μ m, hardness HRC56～62, be equipped with without inside and outside astragal retainer needle bearing 11 one-level planet wheel 12 inside, be enclosed within on one-level planet wheel shaft 13 without inside and outside astragal retainer needle bearing 11, one-level planet wheel shaft 13 adopts the processing of 20CrMnTi carburizing and quenching, and fine-grinding and polishing cylindrical, guarantee that roughness of excircle Ra is not more than 0.4 μ m, hardness HRC56～62, for guaranteeing to obtain enough lubricating without inside and outside astragal retainer needle bearing 11, on one-level planet wheel shaft 13, have radial direction oil I a and axial two oil leabs of oil duct I b, because gear ring 5 is relative with main frame fixing, so one-level planet wheel 12 is except around 13 rotations of one-level planet wheel shaft, also drive the central axis revolution of primary planet carrier 6 around speed reducer, primary planet carrier 6 inside are with involute splines, take turns 4 rigid joint by involute splines and secondary center, drive 4 rotations of secondary center wheel by primary planet carrier 6, this rotating speed is through the rotating speed after primary speed-down, moment of torsion is to increase the moment of torsion after turning round through one-level, power continues going down, drive 15 rotations of secondary planet wheel by secondary center wheel 4, secondary planet wheel 15 adopts the processing of 20CrMnTi carburizing and quenching, and fine-grinding and polishing endoporus, guarantee that endoporus roughness Ra is not more than 0.4 μ m, hardness HRC56～62, secondary planet is taken turns 15 inside sliding bearing 14 is housed, sliding bearing 14 is enclosed within on secondary planet wheel shaft 16, secondary planet wheel shaft 16 adopts the processing of 20CrMnTi carburizing and quenching, and fine-grinding and polishing cylindrical, guarantee that roughness of excircle Ra is not more than 0.4 μ m, hardness HRC56～62, for guaranteeing that sliding bearing 14 obtains enough lubricating, on secondary planet wheel shaft 16, have radial direction oil II c and axial two oil leabs of oil duct II d, because gear ring 5 is relative with main frame fixing, so secondary planet wheel 15 is except the central axis revolution around also driving secondary planet frame 3 around speed reducer 16 rotations of secondary planet wheel shaft, in secondary planet frame 3 inside also with involute splines, by involute splines and output gear shaft 1 rigid joint, then drive output gear 1 to rotate power output by secondary planet frame 3, and the rotating speed that is passed to output gear 1 is through the rotating speed after double reduction, moment of torsion is to increase the moment of torsion after turning round through secondary.Speed reducer output gear adopts the higher 20CrMo material overall carburizing and quenching processing after tooth top being carried out to tip relief of ballistic work, can greatly improve the shock resistance of whole speed reducer.
2, oil scale
Gear oil in speed reducer inner chamber flows in the through hole 5-1 of gear ring 5 through the breach 2-1 of bearing support 2 stop portions, the connecting tube 8-2 of speed reducer oil scale 8-1 is fixed on motor land 9 by the tapped hole on motor land 9, oil scale 8-1 upper end is with cone rubber piece, make it tightly insert in connecting tube 8-2 and extend in the through hole of gear ring 5, according to law of connected vessels, by oil level height in the through hole of inspection gear ring 5, can judge the oil level height in speed reducer inner chamber.
Claims (6)
1. an excavator rotary reducer, it is characterized in that: it is mainly by oil hydraulic motor (10), multi-level planet gear speed reducer structure, gear shaft (1-1) and output gear (1) form according to being linked in sequence from top to bottom, described multi-level planet gear speed reducer structure comprises a double gear ring (5) that does shell, between the upper end of gear ring (5) and oil hydraulic motor (10), be connected with motor land (9), the lower end of gear ring (5) is connected with bearing support (2), described motor land (9), gear ring (5) and bearing support (2) are rigidly connected and form airtight housing, the input stage of the output shaft of described oil hydraulic motor (10) and described multi-level planet gear speed reducer structure is rigidly connected, the output stage of multi-level planet gear speed reducer structure and described gear shaft (1-1) are rigidly connected, gear shaft (1-1) is rotating to be arranged in described bearing support (2).
2. excavator rotary reducer according to claim 1, it is characterized in that: between the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure and planet wheel, install without Internal and external cycle needle bearing (11), comprise retainer (11-1) without Internal and external cycle needle bearing (11), needle roller (11-2) is housed on retainer (11-1), sliding bearing (14) is installed between the described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade and planet wheel.
3. excavator rotary reducer according to claim 1, it is characterized in that: on the planet wheel shaft of the input stage of described multi-level planet gear speed reducer structure, be manufactured with the radial direction oil I (a) and the axial oil duct I (b) that are communicated with oil pocket, on the described described output stage of multi-level planet gear speed reducer structure and/or the planet wheel shaft of intergrade, be manufactured with the radial direction oil II (c) and the axial oil duct II (d) that are communicated with oil pocket.
4. excavator rotary reducer according to claim 1, is characterized in that: every one-level transmission of described multi-level planet gear speed reducer structure all adopts squirrel-cage planet carrier structure.
5. excavator rotary reducer according to claim 1, it is characterized in that: described motor land (9) is upper with oil scale (8), is manufactured with oil level test hole corresponding with oil scale (8) and that be connected with gear oil pocket in the described housing being made up of motor land (9), gear ring (5) and bearing support (2).
6. excavator rotary reducer according to claim 5, it is characterized in that: described oil level test hole comprises the through hole (5-1) that is produced on described gear ring (5) one sides, through hole (5-1) is parallel with the axis of gear ring (5), on the seam of described bearing support (2), be manufactured with the breach (2-1) that is communicated with through hole (5-1) and gear oil pocket, on described motor land (9), be manufactured with the tapped hole (9-1) that is communicated with through hole (5-1), connecting tube (8-2) has been threaded on tapped hole (9-1), described oil scale (8) inserts in connecting tube (8-2) and stretches in described through hole (5-1), cone rubber piece (8-4) is arranged at the top of oil scale (8), fluid upper limit mark (8-3a) and fluid lower limit mark (8-3b) are arranged at the bottom of oil scale (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024747.6U CN203685998U (en) | 2014-01-15 | 2014-01-15 | Rotation speed reducer for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024747.6U CN203685998U (en) | 2014-01-15 | 2014-01-15 | Rotation speed reducer for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685998U true CN203685998U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420024747.6U Expired - Fee Related CN203685998U (en) | 2014-01-15 | 2014-01-15 | Rotation speed reducer for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758938A (en) * | 2014-01-15 | 2014-04-30 | 徐州科源液压股份有限公司 | Slewing reducer for excavators |
-
2014
- 2014-01-15 CN CN201420024747.6U patent/CN203685998U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758938A (en) * | 2014-01-15 | 2014-04-30 | 徐州科源液压股份有限公司 | Slewing reducer for excavators |
| CN103758938B (en) * | 2014-01-15 | 2016-08-24 | 徐州科源液压股份有限公司 | Excavator rotary reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20160115 |
|
| EXPY | Termination of patent right or utility model |