CN103148179B - Variable-speed stroke feedback device - Google Patents
Variable-speed stroke feedback device Download PDFInfo
- Publication number
- CN103148179B CN103148179B CN201310073628.XA CN201310073628A CN103148179B CN 103148179 B CN103148179 B CN 103148179B CN 201310073628 A CN201310073628 A CN 201310073628A CN 103148179 B CN103148179 B CN 103148179B
- Authority
- CN
- China
- Prior art keywords
- gear
- teeth
- assembly
- balladeur train
- fixed
- 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.)
- Expired - Fee Related
Links
Abstract
Variable-speed stroke feedback device of the present invention, for the mensuration of actuating mechanism main shaft corner；Including the input gear being connected with actuating mechanism main shaft；The output gear being connected with potentiometer rotating shaft.The variable ratio drive system including fixed gear assembly and balladeur train assembly it is provided with between input gear and output gear；Balladeur train assembly diverse location on slide teeth wheel shaft, engages with fixed gear assembly shift, it is thus achieved that different output rotates ratio；Potentiometer is for calculating the corner of actuating mechanism main shaft.Its advantage is: part category is few, and repeat usage is high, and cost is relatively low；Stock's manageability, the stroke feedback device of different speed reducing ratio, BOM is consistent；Process-cycle is short, and assembling is simple, not error-prone.
Description
Technical field
The invention belongs to technical field of automation in industry, relate to the travel control system of electric operator, particularly relate to the feedback device of electric operator travel control system.
Background technology
The actuator of prior art is usually and utilizes the feedback of train of reduction gears to measure valve location, owing to valve is of a great variety, haul distance differs, different valves is used to be likely to need the train of reduction gears of different drive ratios to mate, cause that the gear train kind of different speed reducing ratio is more, to choose different gears by demand every time and be customized assembling.
The shortcoming of prior art is:
1. part category is many, and production cost is high.
2. stock's stock quantity is not easily grasped, storehouse management difficulty.
3. due to every kind of gear make consumption all not quite cannot mould molding, affect the process-cycle.
4. produce and control not easily, it is easy to make mistakes.
Summary of the invention
The technical problem to be solved in the present invention is: the deficiency existed for the technology of above-mentioned existing mensuration valve location, it is provided that the pinion feedback device that a kind of speed reducing ratio is variable, measures the position of valve.
The technical scheme that the present invention is directed to the problems referred to above and propose is: variable-speed stroke feedback device, for the mensuration of actuating mechanism main shaft corner；Including: the input gear being connected with actuating mechanism main shaft；The output gear being connected with potentiometer rotating shaft.The variable ratio drive system including fixed gear assembly and balladeur train assembly it is provided with between described input gear and output gear；Described balladeur train assembly diverse location on slide teeth wheel shaft, engages with described fixed gear assembly shift, it is thus achieved that different output rotates ratio；Described potentiometer is for calculating the corner of actuating mechanism main shaft.
Wherein, in described variable ratio drive system, described fixed gear assembly is three linkage gears of coaxial rotation, and one of them gear engages or unsettled for a long time with a gear of previous balladeur train assembly, and another two gear alternately engages with two gears of a rear balladeur train assembly；Described balladeur train assembly is three linkage gears of coaxial rotation, and two of which gear shift alternately engages with two gears of previous fixed gear assembly, and another gear engages or for exporting for a long time with a gear of rear certain gear assembly.
Further, described variable ratio drive system includes: primary speed-down gear, is fixed on primary transmission axle, engages with input gear；First fixed gear assembly, is fixed on primary transmission axle, with primary speed-down gear coaxial rotation；First balladeur train assembly, slides on a slide teeth wheel shaft, engages with the first fixed gear assembly shift；Second fixed gear assembly, is fixed on certain gear shaft, engages for a long time with the first balladeur train assembly；Second balladeur train assembly, slides on a slide teeth wheel shaft, engages with the second fixed gear assembly shift；3rd fixed gear assembly, is fixed on certain gear shaft, engages for a long time with the second balladeur train assembly；3rd balladeur train assembly, slides on a slide teeth wheel shaft, engages with the 3rd fixed gear assembly shift；Described output gear and the 3rd balladeur train assembly engage for a long time, the corner information of output executing mechanism main shaft.
Compared with the technology of existing mensuration valve location, the advantage of employing technical solution of the present invention is:
1. part category is few, and repeat usage is high, and cost is relatively low；
2. stock's manageability, the stroke feedback device of different speed reducing ratio, BOM is consistent；
3. the process-cycle is short, and assembling is simple, not error-prone.
Accompanying drawing explanation
Below the content expressed by this specification accompanying drawing and the labelling in figure are briefly described:
Fig. 1 is the kinematic scheme of variable-speed stroke feedback device embodiment of the present invention.
Fig. 2 is the schematic perspective view of variable-speed stroke feedback device embodiment of the present invention.
Fig. 3 is the schematic perspective view of the other direction of variable-speed stroke feedback device embodiment of the present invention.
Figure includes:
Primary transmission axle 1；
Fixed gear axle 2；
Slide teeth wheel shaft 3；
Input gear 4, the number of teeth is 8；
A primary speed-down gear 5, the number of teeth is 16；
B primary speed-down gear 6, the number of teeth is 56；
B fixed gear 7, the number of teeth is 12；
A fixed gear 8, duplex-gear, the number of teeth respectively 36 and 19；
C fixed gear 9, duplex-gear, the number of teeth respectively 36 and 16；
A balladeur train 10, three teeth, the number of teeth respectively 24,29 and 36；
B balladeur train 11, three teeth, the number of teeth respectively 24,32 and 36；
Output gear 12, the number of teeth is 36；
Potentiometer 13.
Detailed description of the invention
In order to further illustrate principles of the invention and structure, in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.
Variable-speed stroke feedback device of the present invention is a kind of gear transmission system, for the mensuration of actuating mechanism main shaft corner, according to different demand adjustment output gear ratios, it is possible to form fixed drive ratio on demand when assembling.Variable-speed stroke feedback device of the present invention, utilizes a small amount of gear to be repeated combination, exports different gear ratios.
The embodiment of variable-speed stroke feedback device of the present invention, is fixed speed reducing ratio transmission by three groups of fixed gear assemblies, 3 groups of balladeur train assemblies does variable deceleration and compare transmission.Often group balladeur train assembly can slide to both direction, and the direction that slip fixed by split washer can be used namely to fix step-down ratio.Three groups of slide teeth wheels obtain step-down ratio 6 kinds different, alternately engage with the primary speed-down gear of two kinds of numbers of teeth again through input gear 4, it is possible to obtain 12 kinds of output speeds.
Fig. 1 is the variable ratio drive system figure of variable-speed stroke feedback device embodiment of the present invention；Fig. 2 is the schematic perspective view of variable-speed stroke feedback device embodiment；Fig. 3 is the schematic perspective view of the other direction of this embodiment.As figure includes:
The input gear 4 being connected with actuating mechanism main shaft.
A primary speed-down gear 5 and B primary speed-down gear 6, be fixed on primary transmission axle 1.
The B fixed gear 7 of the first fixed gear assembly and A fixed gear 8, be fixed on primary transmission axle 1.
The B fixed gear 7 of the second fixed gear assembly and A fixed gear 8, be fixed on certain gear shaft 2.
The B fixed gear 7 of the 3rd fixed gear assembly, C fixed gear 9, be fixed on another fixed gear axle 2.
The A balladeur train 10 of the first balladeur train assembly, slides on a slide teeth wheel shaft 3.
The A balladeur train 10 of the second balladeur train assembly, slides on another slide teeth wheel shaft 3.
The B balladeur train 11 of the 3rd balladeur train assembly, slides on another slide teeth wheel shaft 3.
The output gear 12 being connected with potentiometer 13 rotating shaft.
In the variable ratio drive system of the embodiment of variable-speed stroke feedback device, B fixed gear 7 is 3, and A fixed gear 8 is 2, and fixed gear axle 2 is two pieces, and slide teeth wheel shaft 3 is 3, and A balladeur train 10 is 2.The recycling rate of waterused of similar elements is higher.
Wherein: the first fixed gear assembly, the second fixed gear assembly the 3rd fixed gear assembly all include B fixed gear 7.
Wherein: the first fixed gear assembly and the second fixed gear assembly all include A fixed gear 8.
Wherein: the second fixed gear assembly and the 3rd fixed gear assembly are fixed on identical fixed gear axle 2 respectively.
Wherein: the first balladeur train assembly, the second balladeur train assembly and the 3rd balladeur train assembly slide on identical three slide teeth wheel shaft 3 respectively.
First balladeur train assembly and the second balladeur train assembly are A balladeur train 10.
Drive system according to variable-speed stroke feedback device embodiment:
The first order slows down (input gear 4 arrives primary speed-down gear):
The number of teeth of input gear 4 is 8；Primary speed-down gear includes A primary speed-down gear 5 arranged side by side and B primary speed-down gear 6；The number of teeth of A primary speed-down gear 5 is the number of teeth of 16, B primary speed-down gears 6 is 56.
A primary speed-down gear 5 and B primary speed-down gear 6, be fixed on the external part of primary transmission axle 1, it is possible to alternately engages with input gear 4, obtains high-speed transmission ratio 2/1 or low speed ratio 7/1 respectively.
(the first fixed gear assembly to the first balladeur train assembly) is slowed down in the second level:
First fixed gear assembly includes B fixed gear 7 and the A fixed gear 8 of coaxial rotation, is each attached to the stage casing of primary transmission axle 1；The number of teeth of B fixed gear 7 is 12, A fixed gears 8 is that the number of teeth is the duplex-gear of 36 and 19 respectively.Wherein 36 teeth of A fixed gear 8 are unsettled.
First balladeur train assembly is A balladeur train 10, slides over the stage casing of a slide teeth wheel shaft 3；A balladeur train 10 is that the number of teeth is three teeth of 24,29 and 36 respectively.
19 teeth of 29 teeth of the A balladeur train 10 of the first balladeur train assembly and the A fixed gear 8 of the first fixed gear assembly are meshed, or 12 teeth of the B fixed gear 7 of 36 teeth of the A balladeur train 10 that shift is the first balladeur train assembly and the first fixed gear assembly are meshed, obtain high-speed transmission ratio 29/19 or low speed ratio 3/1 respectively.
The third level slows down (the first balladeur train assembly to the second fixed gear assembly):
Second fixed gear assembly and the first fixed gear assembly are identical, including B fixed gear 7 and the A fixed gear 8 of coaxial rotation, are each attached to the stage casing of certain gear shaft 2；The number of teeth of B fixed gear 7 is 12, A fixed gears 8 is that the number of teeth is the duplex-gear of 36 and 19 respectively.
36 teeth of the A fixed gear 8 of the second fixed gear assembly and 24 teeth of the first balladeur train assembly A balladeur train 10 engage for a long time, it is thus achieved that gear ratio 3/2.
The fourth stage slows down (the second fixed gear assembly to the second balladeur train assembly):
Second balladeur train assembly is the A balladeur train 10 identical with the first balladeur train assembly, slides over the stage casing of another slide teeth wheel shaft 3；The engagement between engagement and the first balladeur train assembly and the first fixed gear group between its with the second fixed gear assembly is identical.
19 teeth of 29 teeth of the A balladeur train 10 of the second balladeur train assembly and the A fixed gear 8 of the second fixed gear assembly are meshed, or 12 teeth of the B fixed gear 7 of 36 teeth of the A balladeur train 10 that shift is the second balladeur train assembly and the second fixed gear assembly are meshed, obtain high-speed transmission ratio 29/19 and low speed ratio 3/1 respectively.
Level V slows down (the second balladeur train assembly to the 3rd fixed gear assembly):
3rd fixed gear assembly includes B fixed gear 7 and the C fixed gear 9 of coaxial rotation, is each attached to the stage casing of another fixed gear axle 2；The number of teeth of B fixed gear 7 is 12, C fixed gears 9 is that the number of teeth is the duplex-gear of 36 and 16 respectively.
24 teeth of 36 teeth of the C fixed gear 9 of the 3rd fixed gear assembly and the A balladeur train 10 of the second balladeur train assembly engage for a long time, it is thus achieved that gear ratio 3/2.
6th grade of deceleration (the 3rd fixed gear assembly to the 3rd balladeur train assembly):
3rd balladeur train assembly is B balladeur train 11, slides over the stage casing of another slide teeth wheel shaft 3；B balladeur train 11 is that the number of teeth is three teeth of 24,32 and 36 respectively.
16 teeth of 32 teeth of B balladeur train 11 and the C fixed gear 9 of the 3rd fixed gear assembly are meshed, or 12 teeth of the B fixed gear 7 of 36 teeth that shift is B balladeur train 11 and the 3rd fixed gear assembly are meshed, and obtain high-speed transmission ratio 2/1 and low speed ratio 3/1 respectively.
The embodiment of variable-speed stroke feedback device of the present invention, adopt 8 kinds of gears such as input gear 4, A primary speed-down gear 5, B primary speed-down gear 6, B fixed gear 7, A fixed gear 8, C fixed gear 9, A balladeur train 10 and B balladeur train 11, after six grades slow down, it is possible to obtain the gear ratio 21,31,41,62,81,121 of one group of speedy carding process；Gear ratio 73,110,144,216,283,425 with one group of low speed output.Totally 12 kinds of gear ratios.Wherein, the gear ratio of maximum speed: 2/1 × 29/19 × 3/2 × 29/19 × 3/2 × 2/1 ≈ 21；The gear ratio of minimum speed: 7/1 × 3/1 × 3/2 × 3/1 × 3/2 × 3/1 ≈ 425.
Drive system according to variable-speed stroke feedback device embodiment:
7th grade of deceleration (the 3rd balladeur train assembly to output gear 12):
The number of teeth of output gear 12 is 36, and the rotating shaft with potentiometer 13 is connected.
24 teeth of 36 teeth of output gear 12 and the B balladeur train 11 of the 3rd balladeur train assembly engage for a long time, it is thus achieved that speed reducing ratio 3/2.
The input of variable-speed stroke feedback device connects the main shaft of actuator, and the outfan of variable-speed stroke feedback device connects the rotating shaft of potentiometer 13.The angle of rotation of the input gear 4 reflected according to the output valve of potentiometer 13 by control circuit, thus the main shaft calculating actuator has turned how many angles and the position at the current place of valve.
Variable-speed stroke feedback device of the present invention, utilizes a small amount of gear to be repeated combination, exports different gear ratios, it is also possible to select the glide direction of the fixing balladeur train assembly of split washer, i.e. fixed drive ratio.
Foregoing; it is only presently preferred embodiments of the present invention; it is not intended to limit embodiment of the present invention; those of ordinary skill in the art are according to the central scope of the present invention and spirit; corresponding flexible or amendment can be carried out very easily, therefore protection scope of the present invention should be as the criterion with the protection domain required by claims.
Claims (3)
1. variable-speed stroke feedback device, for the mensuration of actuating mechanism main shaft corner；It is characterized in that, including:
The input gear (4) being connected with actuating mechanism main shaft；
The output gear (12) being connected with potentiometer (13) rotating shaft；
The variable ratio drive system including fixed gear assembly and balladeur train assembly it is provided with between described input gear (4) and output gear (12)；
Described balladeur train assembly diverse location on slide teeth wheel shaft (3), engages with described fixed gear assembly shift, it is thus achieved that different output rotates ratio；
Described potentiometer (13) is for calculating the corner of actuating mechanism main shaft；
In described variable ratio drive system:
Described fixed gear assembly is three linkage gears of coaxial rotation, and one of them gear engages or unsettled for a long time with a gear of previous balladeur train assembly, and another two gear alternately engages with two gears of a rear balladeur train assembly；
Described balladeur train assembly is three linkage gears of coaxial rotation, and two of which gear shift alternately engages with two gears of previous fixed gear assembly, and another gear engages or for exporting for a long time with a gear of rear certain gear assembly.
2., according to the stroke feedback device described in claim 1, it is characterized in that: described variable ratio drive system includes:
Primary speed-down gear, is fixed on primary transmission axle (1), engages with input gear (4)；
First fixed gear assembly, is fixed on primary transmission axle (1), with primary speed-down gear coaxial rotation；
First balladeur train assembly, slides on a slide teeth wheel shaft (3), engages with the first fixed gear assembly shift；
Second fixed gear assembly, is fixed on certain gear shaft (2), engages for a long time with the first balladeur train assembly；
Second balladeur train assembly, slides on a slide teeth wheel shaft (3), engages with the second fixed gear assembly shift；
3rd fixed gear assembly, is fixed on certain gear shaft (2), engages for a long time with the second balladeur train assembly；
3rd balladeur train assembly, slides on a slide teeth wheel shaft (3), engages with the 3rd fixed gear assembly shift；
Described output gear (12) engages for a long time with the 3rd balladeur train assembly, the corner information of output executing mechanism main shaft.
3., according to the stroke feedback device described in claim 2, it is characterized in that: in the trip feedback device:
The number of teeth of described input gear (4) is 8；
Described primary speed-down gear includes A primary speed-down gear (5) arranged side by side and B primary speed-down gear (6), is fixed on the external part of primary transmission axle (1)；The number of teeth that the number of teeth of A primary speed-down gear (5) is 16, B primary speed-down gears (6) is 56, alternately engages with input gear (4)；
Described first fixed gear assembly includes B fixed gear (7) and the A fixed gear (8) of coaxial rotation, is fixed on the stage casing of primary transmission axle (1)；The number of teeth of B fixed gear (7) is 12, A fixed gears (8) is that the number of teeth is the duplex-gear of 36 and 19 respectively, and wherein 36 teeth of A fixed gear (8) are unsettled；
Described first balladeur train assembly is A balladeur train (10), slides over the stage casing of a slide teeth wheel shaft (3)；A balladeur train (10) is that the number of teeth is three teeth of 24,29 and 36 respectively, and wherein 19 teeth of the A fixed gear (8) of 29 teeth and 36 tooth shifts and the first fixed gear assembly and 12 teeth of B fixed gear (7) alternately engage；
Described second fixed gear assembly and the first fixed gear assembly are identical, including B fixed gear (7) and the A fixed gear (8) of coaxial rotation, are fixed on the stage casing of certain gear shaft (2)；The number of teeth of B fixed gear (7) is 12, A fixed gears (8) is that the number of teeth is the duplex-gear of 36 and 19 respectively, and wherein 36 teeth of A fixed gear (8) and 24 teeth of the first balladeur train assembly A balladeur train (10) engage for a long time；
Described second balladeur train assembly is the A balladeur train (10) identical with the first balladeur train assembly, slides over the stage casing of another slide teeth wheel shaft (3)；The engagement between engagement and the first balladeur train assembly and the first fixed gear group between its with the second fixed gear assembly is identical；
Described 3rd fixed gear assembly includes B fixed gear (7) and the C fixed gear (9) of coaxial rotation, is fixed on the stage casing of another fixed gear axle (2)；The number of teeth of B fixed gear (7) is 12, C fixed gear (9) is that the number of teeth is the duplex-gear of 36 and 16 respectively, and wherein 24 teeth of the A balladeur train (10) of 36 teeth of C fixed gear (9) and the second balladeur train assembly engage for a long time；
Described 3rd balladeur train assembly is B balladeur train (11), slides over the stage casing of another slide teeth wheel shaft (3)；B balladeur train (11) is that the number of teeth is three teeth of 24,32 and 36 respectively, and wherein 16 teeth of the C fixed gear (9) of 32 teeth and 36 tooth shifts and the 3rd fixed gear assembly and 12 teeth of B fixed gear (7) alternately engage；
The number of teeth of described output gear (12) is 36, engages for a long time with 24 teeth of B balladeur train (11), is reflected the angle of rotation of input gear (4) by potentiometer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073628.XA CN103148179B (en) | 2013-03-08 | 2013-03-08 | Variable-speed stroke feedback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073628.XA CN103148179B (en) | 2013-03-08 | 2013-03-08 | Variable-speed stroke feedback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148179A CN103148179A (en) | 2013-06-12 |
| CN103148179B true CN103148179B (en) | 2016-06-29 |
Family
ID=48546424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310073628.XA Expired - Fee Related CN103148179B (en) | 2013-03-08 | 2013-03-08 | Variable-speed stroke feedback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103148179B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844453A (en) * | 2018-06-06 | 2018-11-20 | 苏州博睿测控设备有限公司 | A kind of magnetoelectric multi-turn angular displacement absolute encoder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740842Y (en) * | 2003-11-26 | 2005-11-16 | 李华东 | Connected rear axle speed-changing box with six stages |
| CN201125993Y (en) * | 2007-11-22 | 2008-10-01 | 刘敏 | Gear box |
| CN201973189U (en) * | 2011-01-18 | 2011-09-14 | 长葛市世英机械有限公司 | Transfer case for motor vehicle |
| CN202431857U (en) * | 2011-12-22 | 2012-09-12 | 侯福新 | Multiple-gear speed changing box |
| CN202494427U (en) * | 2011-12-02 | 2012-10-17 | 西安艾力特电子实业有限公司 | Novel motion angle testing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007139741A (en) * | 2005-10-20 | 2007-06-07 | Matsushita Electric Ind Co Ltd | Rotational angle detector |
-
2013
- 2013-03-08 CN CN201310073628.XA patent/CN103148179B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2740842Y (en) * | 2003-11-26 | 2005-11-16 | 李华东 | Connected rear axle speed-changing box with six stages |
| CN201125993Y (en) * | 2007-11-22 | 2008-10-01 | 刘敏 | Gear box |
| CN201973189U (en) * | 2011-01-18 | 2011-09-14 | 长葛市世英机械有限公司 | Transfer case for motor vehicle |
| CN202494427U (en) * | 2011-12-02 | 2012-10-17 | 西安艾力特电子实业有限公司 | Novel motion angle testing system |
| CN202431857U (en) * | 2011-12-22 | 2012-09-12 | 侯福新 | Multiple-gear speed changing box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103148179A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202125580U (en) | Two-degree-of-freedom controllable five-rod mechanism with characteristics of outputting large torque and high speed simultaneously | |
| CN107340005A (en) | Multi-turn absolute value encoder, drive device, storage medium and control method | |
| CN103148179B (en) | Variable-speed stroke feedback device | |
| CN203823003U (en) | Transmission gear with chamfer angle | |
| CN205207552U (en) | Multi -functional transmission assembly | |
| CN203650061U (en) | Eight-level speed change mechanism for one-side curve disc | |
| CN103775584A (en) | Reciprocating linear rack motion system for three-dimensional quick box-pasting machine | |
| CN204592197U (en) | Stepless speed variator | |
| CN103244614B (en) | The small-size rotary tiller speed changer of double dynamical output shaft | |
| CN205207609U (en) | Multi -functional transmission assembly with single shift fork | |
| CN208919231U (en) | A kind of machine tool chief axis gearbox | |
| CN109869456A (en) | A kind of small farm wheeled vehicle gearbox | |
| CN203421158U (en) | Front wheel drive manual transmission gear structure with double output shafts | |
| CN202032048U (en) | Multi-shaft output gearbox | |
| CN103225508B (en) | A kind of rocker arm of coal mining machine | |
| CN208519129U (en) | A kind of transfer case and tractor | |
| CN201467674U (en) | Multi-gear speed regulation modular work box mechanism for rice transplanter | |
| CN202690906U (en) | Stepless gearbox | |
| CN204493604U (en) | Construction machinery gear box | |
| CN209469759U (en) | A kind of more gear farm wheeled type vehicle gear boxes | |
| CN202684105U (en) | Main spindle box of radial drilling machine | |
| CN204572949U (en) | A kind of transmission assembly for farm machinery | |
| CN205118174U (en) | There is not differential mode of being interrupted variable -speed motor of to shift gears | |
| CN104455237A (en) | Gear box assembly with two-stage speed change | |
| CN204312629U (en) | A kind of reverse gear assembly with two stage speed change |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20210308 |