CN107939914A - A kind of mine electric wheel dump retarder - Google Patents
A kind of mine electric wheel dump retarder Download PDFInfo
- Publication number
- CN107939914A CN107939914A CN201711165509.1A CN201711165509A CN107939914A CN 107939914 A CN107939914 A CN 107939914A CN 201711165509 A CN201711165509 A CN 201711165509A CN 107939914 A CN107939914 A CN 107939914A
- Authority
- CN
- China
- Prior art keywords
- wheel
- primary planet
- gear
- level
- dump
- 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.)
- Pending
Links
Classifications
-
- 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
- F16H1/46—Systems consisting of a plurality of gear trains each with orbital gears, i.e. systems having three or more central 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- 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
-
- 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
- F16H57/0447—Control of lubricant levels, e.g. lubricant level control dependent on temperature
Abstract
The invention discloses a kind of mine electric wheel dump retarder, including torque input shaft, gear and torque output precision；The side end of torque input shaft is arranged with external tooth, and jacking block is equipped with the sidepiece of side end；Jacking block is connected with clutch shaft bearing gland；Gear includes the primary planet reduction assemblies and two-stage planetary reduction component of intermeshing connection；Primary planet reduction assemblies include primary planet carrier and the primary planet wheel being installed in primary planet carrier；Primary planet wheel is engaged by straight-tooth with the external tooth being sheathed on shaft input shaft to be connected；Two-stage planetary reduction component includes support base, secondary solar gear, two level ring gear and secondary planet wheel；Secondary solar gear is engaged with secondary planet wheel by straight-tooth；Secondary planet wheel is installed on support base；The involute outer spline of secondary solar gear side end is engaged with the involute inner spline on primary planet carrier；Torque output precision includes wheel hub and level-one ring gear.
Description
Technical field
The invention belongs to the technical field of retarder, and in particular to a kind of mine electric wheel dump retarder.
Background technology
Hub reduction gear is afterbody deceleration torsion increasing device in quarry tipper power train, can be expired using hub reduction gear
Foot reduces the load of the components such as speed changer, transmission shaft, main reducing gear, differential mechanism, semiaxis under conditions of resultant gear ratio is constant,
And reduce its respective size, so that drive axle obtains the larger road clearance, therefore, hub reduction gear is widely used in respectively
It is kind small, in, in large-scale mine dumper.
Hub reduction gear is more based on planetary gear, some developed countries in the world, such as Japan, Sweden, Russia and
U.S. etc., research, production and application to Planetary Gear Transmission are all attached great importance to, and in transmission performance, transmit power, structure optimization
Leading position is in torque etc..In recent years, as China is to input and the section of manufacturing support and fund
The continuous progress of technology, certain achievement in research is achieved in planetary gear theoretical research and optimization design etc..But by
Start late in China to researching and producing for hub reduction gear, quarry tipper carrying is heavy in addition, pollution is big, work condition environment is disliked
Bad, traditional hub reduction gear load is big, and the smoothness of operating is relatively low.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to a kind of mine electric wheel dump retarder is provided, with
Solve the problems, such as that existing quarry tipper retarder smoothness is low.
To reach above-mentioned purpose, the present invention adopts the technical scheme that：
A kind of mine electric wheel dump retarder is provided, it includes torque input shaft, gear and torque output group
Part；
The side end of torque input shaft is arranged with external tooth, and jacking block is equipped with the sidepiece of side end；Jacking block connects with clutch shaft bearing gland
Touch connection；Gear includes the primary planet reduction assemblies and two-stage planetary reduction component of intermeshing connection；Primary planet
Reduction assemblies include primary planet carrier and the primary planet wheel being installed in primary planet carrier；Primary planet wheel passes through straight-tooth and set
External tooth engagement on shaft input shaft；Two-stage planetary reduction component include support base, secondary solar gear, two level ring gear and
Secondary planet wheel；Secondary solar gear is engaged with secondary planet wheel by straight-tooth；Secondary planet wheel is installed on support base；Two level is too
The involute outer spline of sun wheel side end is engaged with the involute inner spline on primary planet carrier；
Torque output precision includes wheel hub and level-one ring gear；Level-one ring gear is arranged on the inner side of wheel hub；Set on wheel hub
Involute inner spline engage connection with the involute outer spline set on two level ring gear.
Preferably, support base is connected with second bearing gland；And support base passes through two circular cones back to installation with wheel hub
Roller bearing connects.
Preferably, two the first outside framework oil seals are equipped between support base and wheel hub；It is equipped with and end at the first outside framework oil seal
The connected oil fuel tube of lid.
Preferably, clutch shaft bearing gland is connected with end cap.
Preferably, primary planet wheel is equipped with the circlip of positioning single row roller bearing.
Preferably, level-one ring gear is fixed with bearings lid and end cap and connected respectively by the first bolt and the second bolt
Connect, and the first O-ring seal is arranged with the first ring gear；Bearings lid and end cap pass through deep groove ball bearing and one respectively
Level planet carrier connection.
Preferably, wheel hub is equipped with purge cock and three oil level screw plugs.
Preferably, wheel hub is equipped with the flat key that one is in 28 °.
Preferably, primary planet wheel is provided with three, each primary planet wheel by the first single row roller bearing with
Primary planet wheel axis connection, and primary planet wheel is uniformly distributed and is installed on primary planet carrier.
Preferably, secondary planet wheel is provided with three, each secondary planet wheel by the second single row roller bearing with
Primary planet wheel axis connection, and secondary planet wheel is uniformly distributed and is installed on support base.
Mine electric wheel dump retarder provided by the invention, has the advantages that：
The torque input shaft of the present invention is set through whole retarder, and torque input shaft is engaged with primary planet wheel, real
Now it is connected with engaging for gear；Flower in the involute set on the involute outer spline and wheel hub set on two level ring gear
Key engagement connection, realizes the connection of gear and torque output precision, and then reduces the rotating speed of torque input shaft, increases torque
The torque of output precision, and then realize the purpose that retarder slows down.Except this, one and clutch shaft bearing are equipped with torque input shaft increment
The jacking block of gland contact, jacking block are contacted with the first pressure cap, are limited the simultaneously movement of location torque input shaft in its axial direction, are avoided
Its excessive movement in the axial direction, increases the stability of its operation, it is steady effectively to solve existing quarry tipper retarder
Spend the problem of low.
Brief description of the drawings
Fig. 1 is the sectional view of mine electric wheel dump retarder.
Fig. 2 is the right view of mine electric wheel dump retarder.
Fig. 3 is the left view of mine electric wheel dump retarder.
Fig. 4 is the structure chart of mine electric wheel dump retarder torque input shaft.
Fig. 5 is the structure chart of mine electric wheel dump retarder primary planet reducing gear.
Fig. 6 is the structure chart of mine electric wheel dump retarder two-stage planetary reduction mechanism.
Fig. 7 is the structure chart of sealing cover before mine electric wheel dump retarder.
Fig. 8 is the partial enlarged view at A in mine electric wheel dump retarder Fig. 1.
Wherein, 1, torque input shaft；2nd, support base；3rd, wheel hub；4th, taper roll bearing；5th, second bearing gland；6th, axis
Hold support cap；7th, level-one ring gear；8th, primary planet wheel shaft；9th, primary planet wheel；10th, end cap；11st, clutch shaft bearing gland；12、
Jacking block；13rd, primary planet carrier；14th, fixture block；15th, flat key；16th, secondary solar gear；17th, secondary planet wheel shaft；18th, secondary planet
Wheel；19th, oil fuel tube；20th, preceding sealing cover；21st, the 6th bolt；22nd, the 3rd O-ring seal；23rd, the second outside framework oil seal；24th, first
Outside framework oil seal；25th, the 5th bolt；26th, studs；27th, ball nut；28th, the 3rd bolt；29th, purge cock；30th, oil level
Plug screw；31st, the first O-ring seal；32nd, the first single row roller bearing；33rd, circlip for hole；34th, the 4th bolt；35、
Second bolt；36th, the second O-ring seal；37th, deep groove ball bearing；38th, the first bolt；39th, two level ring gear；40th, second is single-row
Cylinder roller bearing；41st, involute outer spline；42nd, external tooth.
Embodiment
The embodiment of the present invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the invention is not restricted to the scope of embodiment, for those skilled in the art,
As long as various change in the spirit and scope of the present invention that appended claim limits and determines, these changes are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the row of protection.
According to one embodiment of the application, as shown in figures 1-8, the mine electric wheel dump retarder of this programme, is wrapped
Include torque input shaft 1, gear and torque output precision.
With reference to figure 1 and Fig. 4, one end of torque input shaft 1 is arranged with external tooth 42, external tooth 42 at one end torque input
Axis 1 is equipped with jacking block 12, and jacking block 12 is connected with clutch shaft bearing gland 11, and clutch shaft bearing gland 11 is made in torque input shaft 1
During industry, jacking block 12 thereon is contacted with the first pressure cap, torque is discharged by clutch shaft bearing gland 11, to torque input shaft 1
Spacing effect is played, avoids it from occurring excessive movement in the axial direction, increases the stability of its operation.Torque input shaft 1
The other end is equipped with spline, for engaging connection with external motor output shaft.Torque input shaft 1 is set through whole retarder, and
It is compact-sized positioned at the center of retarder, save installation space.
With reference to figure 1 and Fig. 5, gear includes the primary planet reduction assemblies and two-stage planetary reduction of intermeshing connection
Component.Wherein, primary planet reduction assemblies include primary planet wheel 9,9 axis 8 of primary planet wheel, level-one ring gear 7 and level-one row
Carrier 13；Primary planet wheel 9 and 9 axis 8 of primary planet wheel are both provided with three, each primary planet wheel 9 and 9 axis of primary planet wheel
Connected between 8 by two the first single row roller bearings 32, and primary planet wheel 9 is uniformly distributed installed in primary planet
On frame 13, primary planet carrier 13 is connected with bearings lid and end cap 10 respectively by deep groove ball bearing 37.End cap 10 and first
Bearing gland 11 is connected by the 4th bolt 34, and clutch shaft bearing gland 11 is used to position deep groove ball bearing 37.
Primary planet wheel 9 is equipped with straight-tooth, is connected for being engaged with the external tooth 42 on shaft input shaft, realizes primary planet
The connection of wheel 9 and shaft input shaft；Circlip for hole 33 is additionally provided with primary planet wheel 9, for positioning single-row cylinder roller
Bearing.
With reference to figure 1 and Fig. 6, two-stage planetary reduction component includes secondary solar gear 16, secondary planet wheel 18, secondary planet wheel
18 axis 17, two level ring gear 39 and support base 2.Wherein, involute outer spline 41 is provided with two level ring gear 39, for
The involute inner spline engagement set on wheel hub 3 is connected, and then realizes the connection between two-stage planetary reduction component and wheel hub 3.
Connection is engaged by straight-tooth between two level ring gear 39 and secondary planet wheel 18, secondary planet wheel 18 and secondary solar gear 16.
Secondary planet wheel 18 and 18 axis 17 of secondary planet wheel are equipped with three, each secondary planet wheel 18 and secondary planet wheel
Connected between 18 axis 17 by two the second single row roller bearings 40, and three secondary planet wheels 18 are uniformly distributed and are installed on
On support base 2.Support base 2 is used for realization retarder and the installation of external structure connects, while in two-stage planetary reduction component
Using support base 2 as double reduction frame, reduce the quantity of component, improve the integral strength and rigidity of retarder.Two level is too
The involute outer spline 41 of sun 16 side ends of wheel is engaged with the involute inner spline on primary planet carrier 13 to be connected；Realize primary planet
The connection of reduction assemblies and two-stage planetary reduction component.
Except this, primary planet wheel 9, secondary planet wheel 18 and secondary solar gear 16 select high-quality carburizing steel to quench through carburizing
Fire processing, hardness, intensity are high, effectively improve the retarder teeth portion service life；And primary planet wheel 9 is only set with secondary planet wheel 18
Three, while ensureing that primary planet wheel 9 can bear enough moments of torsion with secondary planet wheel 18, reduce whole retarder
Quality, improve the transaction capabilities of retarder.
With reference to figure 1 and Fig. 7, torque output precision includes wheel hub 3 and level-one ring gear 7, and level-one ring gear 7 is arranged on wheel hub 3
Inner side, and connected by the second bolt 35.Wheel hub 3 is connected by bolt and ball nut 27 with fixture block 14.Set on wheel hub 3
Involute inner spline engage connection, support base 2 and second bearing with the involute outer spline 41 set on two level ring gear 39
Gland 5 is connected by the 5th bolt 25；And support base 2 is connected with wheel hub 3 by two taper roll bearings 4 back to installation.
The first O-ring seal 31 is arranged with level-one ring gear 7, the second O-ring seal 36 is arranged with end cap 10, it is preceding close
The 3rd O-ring seal 22, the first O-ring seal 31, the second O-ring seal 36 and the 3rd O-ring seal are arranged with capping 20
22 be used cooperatively, increases the leakproofness of retarder of the present invention.
Two the first outside framework oil seals 24 are equipped between support base 2 and wheel hub 3, wheel hub 3 passes through the 6th spiral shell with preceding sealing cover 20
Bolt 21 connects, and two the second outside framework oil seals 23 are arranged with preceding sealing cover 20, are arranged between preceding sealing cover 20 and torque input shaft 1
There is the 3rd O-ring seal 22, it is effective anti-under the first outside framework oil seal 24 and the dual oil sealing of the 3rd O-ring seal 22
Only oil leak of reducer and introduced contaminants enter in retarder, reduce retarder operating efficiency.
The oil fuel tube 19 being connected with end cap 10 is equipped with the first outside framework oil seal 24, for the first outside framework oil seal of lubricated maintenance
24, extend its working life.
With reference to figure 1, Fig. 2, Fig. 3 and Fig. 8, the wheel hub 3 of retarder is equipped with purge cock 29 and three equally distributed oil
Position plug screw 30, is defined the oil level of retarder, ensures that all parts are sufficiently lubricated suitable with oil, reduces
Noise, adds service life.
Wheel hub 3 is equipped with the flat key 15 that one is in 28 °, and quota fixture block 14, is installed on wheel hub 3 easy to wheel, and improves peace
The reliability of dress and the efficiency of installation.
Although being described in detail with reference to attached drawing to the embodiment of invention, should not be construed as to this patent
Protection domain restriction.In the described scope of claims, those skilled in the art are without creative work
The various modifications and deformation made still belong to the protection domain of this patent.
Claims (10)
- A kind of 1. mine electric wheel dump retarder, it is characterised in that：Exported including torque input shaft, gear and torque Component；The side end of the torque input shaft is arranged with external tooth, and jacking block is equipped with the sidepiece of the side end；The jacking block and first axle Pressure cap connects；The gear includes the primary planet reduction assemblies and two-stage planetary reduction group of intermeshing connection Part；The primary planet reduction assemblies include primary planet carrier and the primary planet wheel being installed in primary planet carrier；Described one Level planetary gear is engaged by straight-tooth with the external tooth being sheathed on shaft input shaft；The two-stage planetary reduction component includes support Seat, secondary solar gear, two level ring gear and secondary planet wheel；The secondary solar gear is engaged with secondary planet wheel by straight-tooth； The secondary planet wheel is installed on support base；On the involute outer spline and primary planet carrier of the secondary solar gear side end Involute inner spline is engaged；The torque output precision includes wheel hub and level-one ring gear；The level-one ring gear is arranged on the inner side of wheel hub；The wheel The involute inner spline set on hub engages connection with the involute outer spline set on two level ring gear.
- 2. mine electric wheel dump retarder according to claim 1, it is characterised in that：The support base and the second axis Pressure cap connects；And the support base is connected with wheel hub by two taper roll bearings back to installation.
- 3. mine electric wheel dump retarder according to claim 1, it is characterised in that：The support base and wheel hub it Between be equipped with two the first outside framework oil seals；The oil fuel tube being connected with end cap is equipped with the first outside framework oil seal.
- 4. mine electric wheel dump retarder according to claim 1, it is characterised in that：The clutch shaft bearing gland with End cap connects.
- 5. mine electric wheel dump retarder according to claim 1, it is characterised in that：Set on the primary planet wheel There is the circlip of positioning single row roller bearing.
- 6. mine electric wheel dump retarder according to claim 1, it is characterised in that：The level-one ring gear passes through First bolt and the second bolt are fixedly connected with bearings lid and end cap respectively, and the first O is arranged with the first ring gear Type sealing ring；The bearings lid and end cap are connected by deep groove ball bearing with primary planet carrier respectively.
- 7. mine electric wheel dump retarder according to claim 1, it is characterised in that：The wheel hub is equipped with and drains the oil Plug screw and three oil level screw plugs.
- 8. mine electric wheel dump retarder according to claim 1, it is characterised in that：The wheel hub is in equipped with one 28 ° of flat key.
- 9. mine electric wheel dump retarder according to claim 1, it is characterised in that：The primary planet wheel is set There are three, each primary planet wheel is by the first single row roller bearing and primary planet wheel axis connection, and level-one row Star-wheel, which is uniformly distributed, to be installed on primary planet carrier.
- 10. mine electric wheel dump retarder according to claim 1, it is characterised in that：The secondary planet wheel is set Three are equipped with, each secondary planet wheel is by the second single row roller bearing and primary planet wheel axis connection, and two level Planetary gear, which is uniformly distributed, to be installed on support base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165509.1A CN107939914A (en) | 2017-11-21 | 2017-11-21 | A kind of mine electric wheel dump retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165509.1A CN107939914A (en) | 2017-11-21 | 2017-11-21 | A kind of mine electric wheel dump retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939914A true CN107939914A (en) | 2018-04-20 |
Family
ID=61929599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165509.1A Pending CN107939914A (en) | 2017-11-21 | 2017-11-21 | A kind of mine electric wheel dump retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939914A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799467A (en) * | 2018-08-13 | 2018-11-13 | 广州电力机车有限公司 | A kind of design method of dumper retarder |
| CN109099139A (en) * | 2018-10-12 | 2018-12-28 | 徐州徐工矿山机械有限公司 | A kind of driving speed reducer of heavy engineering machinery |
| CN109099138A (en) * | 2018-10-12 | 2018-12-28 | 徐州徐工矿山机械有限公司 | A kind of driving speed reducer of ultra-large type hydraulic crawler excavator |
| CN111442068A (en) * | 2019-01-16 | 2020-07-24 | 郑州宇通客车股份有限公司 | Vehicle driving wheel, driving system using same and vehicle |
| CN112161027A (en) * | 2020-09-24 | 2021-01-01 | 郑州机械研究所有限公司 | Engineering truck wheel limit walking planet decelerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343809A (en) * | 2011-07-24 | 2012-02-08 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hub reduction device for mining dump truck with electric wheels |
| CN202251725U (en) * | 2011-07-24 | 2012-05-30 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Wheel-side reduction device for mining dump truck with electric wheels |
| CN103994187A (en) * | 2014-04-29 | 2014-08-20 | 北京航天发射技术研究所 | Electric drive two-gear double-stage hub reduction gear |
| CN105864410A (en) * | 2016-05-12 | 2016-08-17 | 吴小杰 | Two-stage planet hub reduction gear |
-
2017
- 2017-11-21 CN CN201711165509.1A patent/CN107939914A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343809A (en) * | 2011-07-24 | 2012-02-08 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Hub reduction device for mining dump truck with electric wheels |
| CN202251725U (en) * | 2011-07-24 | 2012-05-30 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Wheel-side reduction device for mining dump truck with electric wheels |
| CN103994187A (en) * | 2014-04-29 | 2014-08-20 | 北京航天发射技术研究所 | Electric drive two-gear double-stage hub reduction gear |
| CN105864410A (en) * | 2016-05-12 | 2016-08-17 | 吴小杰 | Two-stage planet hub reduction gear |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799467A (en) * | 2018-08-13 | 2018-11-13 | 广州电力机车有限公司 | A kind of design method of dumper retarder |
| CN109099139A (en) * | 2018-10-12 | 2018-12-28 | 徐州徐工矿山机械有限公司 | A kind of driving speed reducer of heavy engineering machinery |
| CN109099138A (en) * | 2018-10-12 | 2018-12-28 | 徐州徐工矿山机械有限公司 | A kind of driving speed reducer of ultra-large type hydraulic crawler excavator |
| CN109099138B (en) * | 2018-10-12 | 2024-01-30 | 徐州徐工矿业机械有限公司 | Walking speed reducer of ultra-large hydraulic excavator |
| CN109099139B (en) * | 2018-10-12 | 2024-01-30 | 徐州徐工矿业机械有限公司 | Walking speed reducer of heavy engineering machinery |
| CN111442068A (en) * | 2019-01-16 | 2020-07-24 | 郑州宇通客车股份有限公司 | Vehicle driving wheel, driving system using same and vehicle |
| CN112161027A (en) * | 2020-09-24 | 2021-01-01 | 郑州机械研究所有限公司 | Engineering truck wheel limit walking planet decelerator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 641302 No. 68, No. 1, Qingquan Pu street, Linjiang Town, Yanjiang District, Ziyang, Sichuan. Applicant after: Ziyang Zhong Gong locomotive transmission Co., Ltd. Address before: 641300 No. 1, Qingquan Pu street, Linjiang Town, Yanjiang District, Ziyang, Sichuan, 1 Applicant before: CRRC ZIYANG TRANSMISSION CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |