CN112049904A - Novel rotary planetary reducer of mining excavator - Google Patents
Novel rotary planetary reducer of mining excavator Download PDFInfo
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- CN112049904A CN112049904A CN201910489513.6A CN201910489513A CN112049904A CN 112049904 A CN112049904 A CN 112049904A CN 201910489513 A CN201910489513 A CN 201910489513A CN 112049904 A CN112049904 A CN 112049904A
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- speed reducer
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 66
- 238000005065 mining Methods 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000005192 partition Methods 0.000 claims description 7
- 244000309464 bull Species 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 3
- 208000032370 Secondary transmission Diseases 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000005570 vertical transmission Effects 0.000 description 1
Images
Classifications
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
-
- 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
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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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
- F16H2001/289—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two or more coaxial and identical sets of orbital gears, e.g. for distributing torque between the coaxial sets
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
-
- 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
- F16H2057/02039—Gearboxes for particular applications
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a novel rotary planetary reducer of a mining excavator, wherein a motor flange is fixedly connected with a cover cylinder, a motor output shaft is connected with an external tooth coupler, the external tooth coupler is connected with an internal tooth coupler through an involute spline, and the outer cylindrical surface of the internal tooth coupler is arranged on a bearing in the cover cylinder; the lower end of the internal tooth coupler is connected with a primary planetary transmission structure; the rotation output torque of the primary planet carrier is transmitted to a secondary planet central wheel to be input torque of secondary transmission, and the primary planetary transmission and the secondary planetary transmission are connected by a support; the secondary planet carrier is meshed with the output shaft; the output shaft is fixed with a rotary pinion. The invention has the advantages that: small volume, light weight, large bearing capacity, high transmission efficiency, compact structure and large transmission ratio. The weight of the manufactured planetary reducer is reduced by one third compared with that of a parallel shaft reducer.
Description
Technical Field
The invention relates to the field of machinery, in particular to an excavator, and more particularly relates to a speed reducer of the excavator.
Background
The mining excavator is one of large-scale equipment for open pit coal mining, and is mainly used for stripping gangue and mining coal in the open pit coal mine. The speed reducer in the mining excavator is divided into the following parts according to the position of the speed reducer in a mechanism: a slewing mechanism speed reducer, a lifting mechanism speed reducer, a pushing mechanism speed reducer and a traveling mechanism speed reducer.
Fig. 1 is a schematic diagram of a mining excavator: the traveling device 101, the underframe beam 102, the large gear ring 103 and the lower plane of the roller disc 104 are fixed together; the upper plane and the lower plane of the roller disc 104 can relatively rotate, the lower plane of a rotary platform 105 is fixed with the upper plane of the roller disc 104, a rotary speed reducer 7 is fixed on the rotary platform 105, a motor 106 is installed at the input shaft end of the rotary speed reducer 107, and a rotary pinion 108 is installed at the output end of the rotary speed reducer; the motor 106 rotates to drive the input end of the rotary speed reducer 107 to rotate, the output end of the rotary speed reducer 107 drives the rotary pinion 108 to rotate, the rotary pinion 108 is meshed with the large gear ring 103, the large gear ring 103 is fixed, the rotary pinion 108 rotates along the outer circumference of the large gear ring, and the rotary platform and parts on the rotary platform rotate due to the rotation of the rotary pinion;
the rotary speed reducer is used for driving the rotary platform to rotate. The rotary platform and the rotary platform are provided with various devices with the weight of nearly thousand tons. The slewing reducer is just, the reversal is carried out at any time at the during operation, makes slewing reducer bear very big moment of torsion and alternating load, and former slewing reducer is the parallel axis structure, as shown in fig. 2, and is bulky, heavy, occupation space is great, because parallel axis reducer output is little, occupation space is big, in order to increase the output torque of speed reducer, needs to improve the bearing capacity of speed reducer, consequently, needs to develop a novel slewing planetary reducer speed reducer.
Disclosure of Invention
The invention aims to provide a novel rotary planetary reducer. Its advantages are small size, light weight, high bearing power and drive efficiency, compact structure and high drive ratio.
And designing the planetary reducer according to the output torque and the revolution of the original parallel shaft reducer as the basis of design. Factors considered during design:
1, adding a certain torque on the basis of the output torque of the original parallel shaft speed reducer, and determining the torque as the output torque of the planetary speed reducer; the output revolution of the speed reducer is unchanged.
2, a two-stage planetary transmission NGW vertical transmission structure is adopted.
And 3, calculating the transmission ratio, the two-stage transmission ratio distribution and the transmission efficiency.
4, determining main parameters: the number of the planet wheels in each stage, the tooth matching method of the teeth of the gears and the combination of the teeth of the gears.
And 5, determining the gear transmission precision, the modulus, the pressure angle and the deflection coefficient.
6 the load cycle times of the central wheel and the planet wheel are more, alloy materials with higher bearing capacity are selected, and a surface nitriding heat treatment method is adopted
7 the inner gear ring has large margin of strength, is made of slightly inferior materials, and has a slightly lower hardness of the tooth surface.
8, the center distance deviation of the planet carrier can influence the gear meshing backlash; the non-parallelism tolerance of the central line of each planet wheel axle hole is strictly controlled according to the precision grade; and (5) performing a static balance test after the planet carrier is processed.
9, calculating the strength, calculating the floating amount of gear transmission, and slightly larger meshing backlash of the planetary transmission gear than that of the common dead axle transmission. The center wheel can float during transmission without the phenomena of blocking and jamming.
The specific technical scheme is as follows:
a novel rotary planetary reducer of a mining excavator comprises a traveling gear, a underframe beam, a large gear ring and a lower plane of a roller disc which are fixed together; the upper plane and the lower plane of the roller disc can rotate relatively, the lower plane of the rotary platform is fixed with the upper plane of the roller disc, the rotary speed reducer is fixed on the rotary platform, the motor is installed at the input shaft end of the rotary speed reducer, and the rotary pinion is installed at the output end of the rotary speed reducer; the motor rotates to drive the input end of the rotary speed reducer to rotate, the output end of the rotary speed reducer drives the rotary pinion to rotate, the rotary pinion is meshed with the bull gear, the bull gear is fixed, the rotary pinion rotates along the outer circumference of the bull gear, and the rotary pinion rotates to drive the rotary platform and parts on the rotary platform to rotate; the structure of the rotary speed reducer is as follows:
the motor flange is fixedly connected with the cover cylinder, the motor output shaft is connected with the external tooth coupler, the external tooth coupler is connected with the internal tooth coupler through an involute spline, and the outer cylindrical surface of the internal tooth coupler is arranged on a bearing in the cover cylinder; the lower end of the internal tooth coupler is connected with a primary central wheel through an involute spline, the primary central wheel is meshed with a primary planet wheel, the primary planet wheel is arranged on a primary planet carrier through a bearing and a pin shaft, the primary planet wheel rotates on the primary planet carrier, and the primary planet wheel is meshed with a primary inner gear ring to form a primary planet transmission structure;
a partition plate is arranged at the lower end of a primary planet carrier, jacking balls are arranged at two ends of the partition plate, a primary central wheel is supported on the upper surface of the jacking ball at the upper end, the lower surface of the jacking ball at the lower end is abutted against a secondary central wheel, the secondary central wheel is meshed with a secondary planet wheel, the secondary planet wheel is arranged on a secondary planet carrier through a bearing and a pin shaft, the secondary planet wheel rotates on the secondary planet carrier, and the secondary planet wheel is meshed with a secondary inner gear ring to form a secondary planet transmission structure;
the second-stage central wheel is meshed with the first-stage planet carrier;
the primary planetary transmission and the secondary planetary transmission are connected by a support;
the secondary planet carrier is meshed with the output shaft; the output shaft is fixed with a rotary pinion.
A J-shaped frameless oil seal is arranged on the upper end bearing of the cover cylinder to prevent dust from entering the box body of the speed reducer.
The cover cylinder is provided with an oil filling hole and a vent hole, and the vent hole is provided with a vent cover.
The invention has the advantages that: small volume, light weight, large bearing capacity, high transmission efficiency, compact structure and large transmission ratio. The weight of the manufactured planetary reducer is reduced by one third compared with that of a parallel shaft reducer.
Drawings
FIG. 1 is a diagrammatic view of a mining excavator;
fig. 2 is a schematic diagram of a parallel shaft rotary speed reducer of a mining excavator, wherein in fig. 2, 201 is a primary shaft gear, 202 is a primary gearwheel, 203 is a secondary shaft gear, 204 is a secondary gearwheel, 205 is a tertiary shaft gear, 206 is a tertiary gearwheel, and 207 is a reduction box body;
FIG. 3 is a schematic structural diagram of the present invention, and in FIG. 3, a cover barrel 1, an external gear coupling 2, an internal gear coupling 3, an oil injection port 4, a primary central wheel 5, a primary planet carrier 6, a primary planet wheel 7, a primary internal gear 8, a partition plate 9, a support 10, a secondary central wheel 11, a secondary planet carrier 12, a secondary planet wheel 13, a secondary internal gear 14, a base 15, a large flange 16, an oil discharge port 17 and a vent cover 18;
FIG. 4-1 is a schematic structural diagram of a primary planet carrier;
FIG. 4-2 is a top view of FIG. 4-1;
fig. 5 is a schematic structural view of the secondary center wheel.
Detailed Description
The invention is described in detail with reference to the accompanying drawings, as shown in the figures, the lower planes of a traveling gear 101, a chassis beam 102, a large gear ring 103 and a roller disc 104 of the invention are fixed together; the upper plane and the lower plane of the roller disc 104 can relatively rotate, the lower plane of a rotary platform 105 is fixed with the upper plane of the roller disc 104, a rotary speed reducer 7 is fixed on the rotary platform 105, a motor 106 is installed at the input shaft end of the rotary speed reducer 107, and a rotary pinion 108 is installed at the output end of the rotary speed reducer; the motor 106 rotates to drive the input end of the rotary speed reducer 107 to rotate, the output end of the rotary speed reducer 107 drives the rotary pinion 108 to rotate, the rotary pinion 108 is meshed with the large gear ring 103, the large gear ring 103 is fixed, the rotary pinion 108 rotates along the outer circumference of the large gear ring, and the rotary platform and parts on the rotary platform rotate due to the rotation of the rotary pinion;
the structure of the rotary speed reducer 107 is:
the motor 106 flange is fixedly connected with the cover cylinder 1, the motor output shaft is connected with the external tooth coupler 2, the external tooth coupler 2 is connected with the internal tooth coupler 3 through an involute spline, and the outer cylindrical surface of the internal tooth coupler 3 is arranged on a bearing in the cover cylinder 1; the lower end of the internal gear coupling 3 is connected with a primary central wheel 5 through an involute spline, the primary central wheel 5 is meshed with a primary planet wheel 7, the primary planet wheel 7 is mounted on a primary planet carrier 6 through a bearing and a pin shaft, the primary planet wheel 7 rotates on the primary planet carrier 6, and the primary planet wheel 7 is meshed with a primary inner gear ring 8 to form a primary planet transmission structure;
a partition plate 9 is arranged at the lower end of a primary planet carrier 6, top balls 20 are arranged at two ends of the partition plate 9, the upper surface of the top ball 20 at the upper end supports a primary central wheel 5, the lower surface of the top ball 20 at the lower end is abutted against a secondary central wheel 11 to ensure the positioning of the secondary central wheel 11, the secondary central wheel 11 is meshed with a secondary planet wheel 13, the secondary planet wheel 13 is arranged on a secondary planet carrier 12 through a bearing and a pin shaft, the secondary planet wheel 13 rotates on the secondary planet carrier 12, and the secondary planet wheel 13 is meshed with a secondary inner gear ring 14 to form a secondary planet transmission structure;
the upper end of the secondary central wheel 11 is provided with an external gear ring 111 which is meshed with the internal gear ring 61 at the lower part of the primary planet carrier 6;
the primary planetary transmission and the secondary planetary transmission are connected by a support 10, and the connection mode is that a primary inner gear ring 8 and a secondary inner gear ring 14 are respectively fixedly connected with the support 10 by bolts;
the secondary planet carrier is meshed with the output shaft; a rotary pinion gear 108 is fixed to the output shaft.
A J-shaped frameless oil seal is arranged on the upper end bearing of the cover cylinder 1 to prevent dust from entering the box body of the speed reducer.
The cover cylinder 1 is provided with an oil filling hole 4 and a vent hole, and a vent cover 16 is arranged on the vent hole.
The working principle of the invention is as follows: the motor rotates to drive the external and internal tooth couplings to rotate; the primary central wheel, the primary planet wheel, the primary inner gear ring and the primary planet carrier are driven to perform primary planet transmission; the primary planet carrier rotates to output torque, the torque is transmitted to the secondary driving central wheel and is input torque, a secondary planet wheel, a secondary inner gear ring and a secondary planet carrier of secondary transmission, and the torque is output torque by the rotation of the secondary planet carrier in a speed reduction mode.
The total reduction ratio of the speed reducer is equal to the multiplication of the first-stage planetary transmission reduction ratio and the second-stage planetary transmission reduction ratio, the reduction ratio of two planetary transmissions connected together is larger due to the large planetary transmission reduction ratio, the torque of the output end of the speed reducer is fixed, the larger the reduction ratio is, the smaller the input torque of the input end is, and the smaller the input power required by the speed reducer is, so that the motor power of the planetary speed reducer is much smaller than that of a parallel shaft speed reducer.
Claims (3)
1. A novel rotary planetary reducer of a mining excavator comprises a traveling gear, a underframe beam, a large gear ring and a lower plane of a roller disc which are fixed together; the upper plane and the lower plane of the roller disc can rotate relatively, the lower plane of the rotary platform is fixed with the upper plane of the roller disc, the rotary speed reducer is fixed on the rotary platform, the motor is installed at the input shaft end of the rotary speed reducer, and the rotary pinion is installed at the output end of the rotary speed reducer; the motor rotates to drive the input end of the rotary speed reducer to rotate, the output end of the rotary speed reducer drives the rotary pinion to rotate, the rotary pinion is meshed with the bull gear, the bull gear is fixed and fixed, the rotary pinion rotates along the outer circumference of the bull gear, and the rotary pinion rotates to drive the rotary platform and parts on the rotary platform to rotate; the rotary speed reducer is characterized in that the rotary speed reducer has the structure as follows:
the motor flange is fixedly connected with the cover cylinder, the motor output shaft is connected with the external tooth coupler, the external tooth coupler is connected with the internal tooth coupler through an involute spline, and the outer cylindrical surface of the internal tooth coupler is arranged on a bearing in the cover cylinder; the lower end of the internal tooth coupler is connected with a primary central wheel through an involute spline, the primary central wheel is meshed with a primary planet wheel, the primary planet wheel is arranged on a primary planet carrier through a bearing and a pin shaft, the primary planet wheel rotates on the primary planet carrier, and the primary planet wheel is meshed with a primary inner gear ring to form a primary planet transmission structure;
a partition plate is arranged at the lower end of a primary planet carrier, jacking balls are arranged at two ends of the partition plate, a primary central wheel is supported on the upper surface of the jacking ball at the upper end, the lower surface of the jacking ball at the lower end is abutted against a secondary central wheel, the secondary central wheel is meshed with a secondary planet wheel, the secondary planet wheel is arranged on a secondary planet carrier through a bearing and a pin shaft, the secondary planet wheel rotates on the secondary planet carrier, and the secondary planet wheel is meshed with a secondary inner gear ring to form a secondary planet transmission structure;
the second-stage central wheel is meshed with the first-stage planet carrier;
the primary planetary transmission and the secondary planetary transmission are connected by a support;
the secondary planet carrier is meshed with the output shaft; the output shaft is fixed with a rotary pinion.
2. The novel slewing planetary reducer for mining excavators according to claim 1, characterized in that: a J-shaped frameless oil seal is arranged on the upper end bearing of the cover cylinder to prevent dust from entering the box body of the speed reducer.
3. The novel slewing planetary reducer for mining excavators according to claim 1, characterized in that: the cover cylinder is provided with an oil filling hole and a vent hole, and the vent hole is provided with a vent cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489513.6A CN112049904A (en) | 2019-06-06 | 2019-06-06 | Novel rotary planetary reducer of mining excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489513.6A CN112049904A (en) | 2019-06-06 | 2019-06-06 | Novel rotary planetary reducer of mining excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112049904A true CN112049904A (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910489513.6A Withdrawn CN112049904A (en) | 2019-06-06 | 2019-06-06 | Novel rotary planetary reducer of mining excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN112049904A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201381525Y (en) * | 2009-04-18 | 2010-01-13 | 赣州五环机器有限责任公司 | Rotating planetary reducer |
| CN101994783A (en) * | 2010-11-19 | 2011-03-30 | 太原重工股份有限公司 | Walking planetary reducer of mining excavator |
| CN202597596U (en) * | 2012-05-30 | 2012-12-12 | 杭州南方通达齿轮有限公司 | Two-stage planetary reducer |
| CN202690898U (en) * | 2012-06-19 | 2013-01-23 | 徐震华 | Reducer for cement mixer |
| CN202746502U (en) * | 2012-08-31 | 2013-02-20 | 太原重工股份有限公司 | Rotary planetary reducer of mining excavator |
| CN103016631A (en) * | 2011-09-20 | 2013-04-03 | 赣州五环机器有限责任公司 | Slewing planetary gear reducer |
| CN104179895A (en) * | 2014-08-11 | 2014-12-03 | 陕西法士特汽车传动集团有限责任公司 | Planetary gear reducer for high-capacity cement mixer truck |
| CN205298420U (en) * | 2015-12-31 | 2016-06-08 | 浙江迈力机电有限公司 | Syntropy dual output planet gear |
| CN210218570U (en) * | 2019-06-06 | 2020-03-31 | 沈阳露天采矿设备制造有限公司 | Novel rotary planetary reducer of mining excavator |
-
2019
- 2019-06-06 CN CN201910489513.6A patent/CN112049904A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201381525Y (en) * | 2009-04-18 | 2010-01-13 | 赣州五环机器有限责任公司 | Rotating planetary reducer |
| CN101994783A (en) * | 2010-11-19 | 2011-03-30 | 太原重工股份有限公司 | Walking planetary reducer of mining excavator |
| CN103016631A (en) * | 2011-09-20 | 2013-04-03 | 赣州五环机器有限责任公司 | Slewing planetary gear reducer |
| CN202597596U (en) * | 2012-05-30 | 2012-12-12 | 杭州南方通达齿轮有限公司 | Two-stage planetary reducer |
| CN202690898U (en) * | 2012-06-19 | 2013-01-23 | 徐震华 | Reducer for cement mixer |
| CN202746502U (en) * | 2012-08-31 | 2013-02-20 | 太原重工股份有限公司 | Rotary planetary reducer of mining excavator |
| CN104179895A (en) * | 2014-08-11 | 2014-12-03 | 陕西法士特汽车传动集团有限责任公司 | Planetary gear reducer for high-capacity cement mixer truck |
| CN205298420U (en) * | 2015-12-31 | 2016-06-08 | 浙江迈力机电有限公司 | Syntropy dual output planet gear |
| CN210218570U (en) * | 2019-06-06 | 2020-03-31 | 沈阳露天采矿设备制造有限公司 | Novel rotary planetary reducer of mining excavator |
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Application publication date: 20201208 |