CN207961468U - A kind of gearbox of mini-tiller and its anti-axis play - Google Patents
A kind of gearbox of mini-tiller and its anti-axis play Download PDFInfo
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- CN207961468U CN207961468U CN201820126997.9U CN201820126997U CN207961468U CN 207961468 U CN207961468 U CN 207961468U CN 201820126997 U CN201820126997 U CN 201820126997U CN 207961468 U CN207961468 U CN 207961468U
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Abstract
The utility model discloses a kind of gear box of micro-cultivator of anti-axis play, including babinet（100）, it is arranged in the babinet（100）The upper mounting hole for installation axle（101）, it is characterised in that：In the mounting hole（101）Outer is provided with slot（102）, in the slot（102）Inside it is provided with sealing ring（103）, in the mounting hole（101）With slot（102）It is provided with installation cover board outside（104）.Using the gear box of micro-cultivator of the utility model, gear-box body of micro-tillage inner shaft play can be solved the problems, such as.
Description
Technical field：
The utility model is related to a kind of mini-tiller more particularly to a kind of anti-axis play gearboxes of mini-tiller.
Background technology：
Mini-tiller speed change is inwardly equipped with mostly with axis, is reached by the way that the different gear pair of transmission ratio is arranged between two axis
The effect of speed change.The axis is mounted on by bearing on the mounting hole of gear box.In the prior art, to prevent gearbox
It is interior into dust and to prevent the oil leakage in gearbox, need that sealing mechanism, existing sealing are installed at mounting hole
Mechanism is that a grease proofing paper washer is first installed outside the mounting hole, is being covered in outside the grease proofing paper washer using cover board and is using screw
It is locked on the gearbox.
Dust is can avoid using existing sealing structure to enter in gearbox, also can avoid the engine oil in gearbox
Dew, but can cause the axis in gearbox that play occurs using the above structure so that gear engagement misplaces so that power passes
It is unreliable to pass, and is easy to happen danger.
Utility model content：
The purpose of this utility model is to provide a kind of gear box of micro-cultivator of anti-axis play.
To achieve the goals above, the utility model is realized in this way：A kind of gear box of micro-cultivator of anti-axis play, packet
Babinet is included, the mounting hole for installation axle is set on the babinet, it is characterised in that：The mounting hole outer is provided with slot,
It is provided with sealing ring in the slot, installation cover board is provided with outside the mounting hole and slot.
Preferably, the slot encloses along the mounting hole outer one and is arranged, and has between the slot and the mounting hole
Gap.
Preferably, the slot encloses along the mounting hole outer one and is arranged, and is communicated between the slot and the mounting hole.
Preferably, the installation cover board is mounted on the box outer surface by screw.
A kind of mini-tiller, including anti-axis play gearbox described above.
Advantageous effect：
Using the gearbox body of the utility model, it can prevent the axis in gearbox from play occurs, improve speed change reliability, carry
The reliability that high power transmits more improves the security performance of mini-tiller operation.
In addition, not occurring to beat tooth phenomenon between also ensuring gear, the damage of gear is avoided, that improves gear uses the longevity
Life.
Description of the drawings：
Fig. 1 is gear box structure chart one；
Fig. 2 is gear box structure chart two；
Fig. 3 is three gear structure charts；
Fig. 4 is nine gear structure charts.
Specific implementation mode：
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, but the utility model
These embodiments are not limited to, any improvement or replacement on the present embodiment essence spirit still falls within the utility model
Claim range claimed.
Embodiment 1：As shown in Figs 1-4, a kind of gear box of micro-cultivator of anti-axis play, including babinet 100 are arranged described
It is the mounting hole 101 of installation axle on babinet 100,101 outer of the mounting hole is provided with slot 102, the setting in the slot 102
There is sealing ring 103, installation cover board 104 is provided with outside the mounting hole 101 and slot 102.
Wherein, the slot encloses along the mounting hole outer one and is arranged, and between having between the slot and the mounting hole
Gap.
The axis is gear shaft, and three rooted tooth wheel shafts, respectively main shaft are provided in the gearbox of the present embodiment, and described
1 countershaft 2 disposed in parallel of main shaft and drive shaft 3, between the main shaft 1 and countershaft 2, the countershaft 2 and the drive shaft 3 it
Between be provided with gear pair.Three gear speed changes or nine gear speed changes can be formed by the gear pair.
One end of the drive shaft 3 is power output end.Described main shaft one end receives power input by primary teeth wheel set
The power of axis input.The primary teeth wheel set include be arranged the power input shaft end be actively entered gear and setting exist
The driven input gear of described main shaft one end.
In the present embodiment, the gear is three gear gears, by between main shaft 1, countershaft 2 and drive shaft 3
The gear pair of setting is realized.Concrete structure is as follows：
Being provided on the main shaft 1 can be along the main shaft duplex-gear 16 in axial sliding of the main shaft 1, on the countershaft 2
It is installed with the center tooth 1 that can be engaged with the gear wheel of the main shaft duplex-gear 16 and can be small with the main shaft duplex-gear 16
The center tooth 2 22 of gear engagement is fixedly provided with center tooth 3 24, the center tooth 3 24 and drive shaft 3 on the countershaft 2
Upper connected output gear 35 engages.
Also, the duplex-gear 36 that reverses gear also is set in the drive shaft 3, the pinion gear of the duplex-gear 36 that reverses gear and institute
2 22 engaged transmission of center tooth is stated, the gear wheel of the duplex-gear 22 that reverses gear can be engaged with the gear wheel of the main shaft duplex-gear 16
Transmission.And the main shaft duplex-gear 16 then passes through driving mechanism（Such as shifting fork mechanism）It is driven to be slided on main shaft 1.
In addition, the output end in the drive shaft 3 is additionally provided with active output bevel gear wheel 34, the active output bevel gear wheel
The 34 driven output bevel gear wheel 61 by engaging transfers power to transmission shaft 6.
By the setting of above-mentioned gear, three gear speed changes are realized, wherein two gears is rotate forward forward gear, another gear is anti-
Turn to reverse gear, drive path is as follows：
Gear one：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main shaft duplex-gear 16 is big
Gear → countershaft center tooth 1（Countershaft 2 is driven to rotate）3 24 → output gear of → countershaft center tooth 35（Drive 3 turns of drive shaft
It is dynamic）→ active output bevel gear wheel 15 → driven output bevel gear wheel 61（Transmission shaft 6 is driven to rotate）.Power passes through driven output bevel gear
Wheel 61, which exports and transmission shaft 6 is driven to realize, rotates forward advance.
Gear two：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main shaft duplex-gear 16 is small
Gear → countershaft center tooth 2 22（Countershaft 2 is driven to rotate）3 24 → output gear of → countershaft center tooth 35（Drive shaft 3 is driven to lead
It is dynamic）→ active output bevel gear wheel 34 → driven output bevel gear wheel 61.Power is exported by driven output bevel gear wheel 61 and drives biography
Moving axis 6, which is realized to rotate forward, to advance.
Gear three：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main shaft duplex-gear 16 is small
Gear → reverse gear 36 gear wheel of duplex-gear → 36 pinion gears of duplex-gear of reversing gear → countershaft center tooth 2 22（Drive countershaft rotation）→
3 24 → output gear of countershaft center tooth 35（Drive output shaft actively）→ active output bevel gear wheel 34 → driven output bevel gear wheel
61.Power is exported by driven output bevel gear wheel 61 and transmission shaft is driven to realize that reversion is fallen back.
In the present embodiment, the center tooth 1 is arranged at the middle part of the countershaft 2, and the setting of the center tooth 2 22 exists
The remote power input shaft 5 in the countershaft 2 is arranged in one end of the nearly power input shaft 5 of the countershaft 2, the center tooth 3 24
It one end and is wholely set with the countershaft 2.The gear wheel of the duplex-gear 36 that reverses gear is located at the center tooth 1 and center tooth
Between 3 24.
As another embodiment of the present embodiment, the telemechanical power input in the countershaft 2 is arranged in the center tooth 1
One end of axis 5, the center tooth 2 22 are arranged in one end of the nearly power input shaft 5 of the countershaft 2, and the center tooth 3 24 is set
It sets in one end of the remote power input shaft 5 of the countershaft 2 and is wholely set with the countershaft 2, and the center tooth one 21
Between the center tooth 2 22 and center tooth 3 24.The gear wheel of the reverse gear shaft duplex-gear 36 is located at the center tooth 1
Between center tooth 2 22.
Using the gearbox of the present embodiment, one end of the main shaft, countershaft and drive shaft is by bearing support in gearbox
On the mounting hole 101 of body 100, the other end is equally also by bearing support on the partition board of gearbox.And it is supported on gearbox body
Axis on 100 is sealed by the sealing ring 103 being arranged in 101 outer groove of mounting hole, then by cover board 104 by mounting hole 101
Closing locking is carried out with sealing ring 103, during locking, ensures that the support of axis promotes by the decrement of sealing ring, keeps away
Exempt from axis and play occurs during the work time.
As another embodiment of the present embodiment, the gear in gearbox is nine gears, by main shaft 1, countershaft 2 with
The gear pair being arranged between drive shaft 3 is realized.Wherein, in order to realize above-mentioned nine gears, can there are many set-up mode, but
In the present embodiment, in order to reach compact-sized advantage, there are three gears for setting on the main shaft 1, and pass through gearshift A
It adjusts；There are three gears for setting in the drive shaft 3, and are adjusted by gearshift B.A gear wherein on main shaft 1
It can export three gears in respective drive 3, and three gears on main shaft 1, for exportable nine gears in drive shaft.
In the present embodiment, based on the considerations of the structure space and cost the considerations of, the concrete structure of gear is：
The driving duplex-gear 13, circumferentially fixed and can be along axis of axial restraint and empty set is disposed on the main shaft 1
To the secondary sliding tooth 12 of the main sliding tooth 11 of sliding, axial restraint and empty set, and the main sliding tooth 11 can be with the secondary driving
Tooth 12 connects.Wherein, the power intake for driving duplex-gear 13 close to the main shaft 1, and the secondary sliding tooth 12 is separate
The power intake of main shaft 1.The main sliding tooth 11 drives it to be slided on main shaft 1 by gearshift A, and in the master
It is provided with pawl on the fluted disc of the direction secondary sliding tooth of sliding tooth 11, is provided with and pawl phase in the secondary sliding tooth 12
The empty slot of cooperation.In addition, the gear of the power intake close to the main shaft 1 of the driving duplex-gear 13 is pinion gear, far
Gear from power intake is gear wheel.
The secondary output gear 31, circumferentially fixed and can be along axis of axial restraint and empty set is disposed in the drive shaft 3
To three tooth 33 of output of the main output gear 32 of sliding, axial restraint and empty set, wherein the main output gear 32 can be with the pair
Output gear 31, which is formed, to be connected.Wherein, the secondary output gear 31 is close to the power output end of the drive shaft 3, the output three
Power output end of the tooth 33 far from the drive shaft 3.The main output gear 32 drives it in drive shaft 3 by driving mechanism B
Sliding, and it is provided with pawl on the fluted disc of the direction of the main output gear 32 secondary output gear 31, in the secondary output
It is provided on tooth 31 and the matched empty slot of pawl.In addition, three teeth 33 of the output be set as intermediate gear be gear wheel, two
Side gear is pinion gear.
In the present embodiment, the power intake is the same end with power output end.
Finally, it to coordinate the main shaft 1 and drive shaft 3, is disposed on the countershaft 2 in being connected with countershaft 2
Raker tooth 1, the center tooth 2 22 being connected with countershaft 2, the intermediate duplex-gear 1 being placed on the countershaft 2 and the countershaft
2 connected center tooths 3 24, the center tooth 4 25 being connected with the countershaft 2, the intermediate duplex-gear two being placed on the countershaft 2
26 and with the countershaft 2 be connected center tooth 5 27.Wherein, the center tooth 1 is engaged with the secondary output gear 31；Institute
Stating center tooth 2 22 can engage with the main output gear 32；The pinion gear of the intermediate duplex-gear 1 close to power intake and
It can be engaged with the main output gear 32, gear wheel and the driving duplex-gear 13 on the main shaft 1 of the intermediate duplex-gear 1
Pinion gear engagement；The center tooth 3 24 is engaged with the gear wheel of the driving duplex-gear 13 on the main shaft 1；The center tooth
4 25 engage with the pinion gear of the nearly power intake on three tooth 33 of output on the countershaft 3；The intermediate duplex-gear two
26 pinion gear be nearly power intake and with the pinion gear of the remote power intake of three tooth 33 of output in the drive shaft 3
Engagement, the gear wheel of the intermediate duplex-gear 2 26 can nibble 11 conjunctions with the main sliding tooth of the main shaft 1；The center tooth 5 27 with
Secondary driving tooth engagement on the main shaft 1.In addition, the gear wheel of three tooth 33 of output in the drive shaft 3 can also with it is described
11 engaged transmission of main sliding tooth on main shaft 1.
In addition, the power intake in the main shaft 1 connects power input shaft 5 by gear pair, inputted in the power
It is installed on axis and is actively entered gear 51, be installed on the main shaft 1 and the driven input tooth that is actively entered gear 51 and engages
Wheel 15, the power input shaft 5 connect actuating unit such as diesel engine or gasoline engine by clutch.In the dynamic of the drive shaft 3
Power output end is connected with transmission shaft 6 by bevel gear pair, and the power output end of the drive shaft 3 is provided with active output bevel gear
Wheel 34, is provided with the driven output bevel gear wheel 61 being meshed with the active output bevel gear wheel 34, power on the transmission shaft 6
It is transmitted on the working shaft of mini-tiller eventually by transmission shaft 6, and the action such as plough is carried out with cutter.Or power passes through biography
Moving axis 6 is transmitted in the walking axle of mini-tiller, and mini-tiller is driven to walk, and realizes a wide range of speed governing of mini-tiller.
Using the gear of the mini-tiller of the present embodiment, main sliding tooth 11 is adjusted by gearshift A and gearshift B
With the different location of main output gear 32, it can be achieved that the transformation of nine gears.In the following, passing through main sliding tooth 11 and main output gear 32
Different location is arranged to illustrate nine gears in the present embodiment.
First, the main sliding tooth 11 and three tooth of output, 33 canine tooth in the drive shaft 3 are made by gearshift A
Wheel engagement.At this point, three gears can be obtained in the different location setting by main output gear 32.
Gear one：The main output gear 32 is driven by gearshift B, makes pawl thereon and the sky on secondary output gear 31
Slot coordinates, and the secondary output gear 31 of realization is connected with drive shaft 3, and drive path is at this time：It is actively entered gear 51 → driven input
Gear 15（Main shaft 1 is driven to rotate）The nearly power of three tooth 33 of gear wheel → output of three teeth 33 of → main 11 → output of sliding tooth
Input terminal pinion gear → center tooth 4 25（Countershaft 2 is driven to rotate）→ center tooth 1 → pair output gear 31 → active output bevel gear
Wheel 34 → driven output bevel gear wheel 61.
Gear two：The main output gear 32 is driven by gearshift B, so that it is engaged with center tooth 2 22, is driven at this time
Route is：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）Three teeth of → main 11 → output of sliding tooth
Nearly power intake pinion gear → center tooth 4 25 of 33 three tooth 33 of gear wheel → output（Countershaft 2 is driven to rotate）→ intermediate
Tooth 2 22 → main output gear 32 → active output bevel gear wheel 34 → driven output bevel gear wheel 61.
Gear three：The main output gear 32 is driven by gearshift B, makes itself and the intermediate duplex-gear 1 on countershaft 2
Pinion gear engagement, drive path is at this time：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main
Nearly power intake pinion gear → center tooth 4 25 of three tooth 33 of gear wheel → output of three tooth 33 of sliding tooth 11 → output
（Countershaft 2 is driven to rotate）→ center tooth 3 24 → 13 gear wheels of driving duplex-gear → driving duplex-gear, 13 pinion gear → centre duplex
One 23 gear wheel of tooth → one 23 pinion gear of centre duplex-gear → main output gear 32 → active output bevel gear wheel 34 → driven output cone
Gear 61.
Then, the big of the main sliding tooth 11 and the intermediate duplex-gear 2 26 on the countershaft 2 is made by gear changing mechanism A
Gear engages.At this point, three gears can be obtained in the different location setting by main output gear 31.
Gear four：The main output gear 32 is driven by gear changing mechanism B, makes pawl thereon and the sky on secondary output gear 31
Slot coordinates, and the secondary output gear 31 of realization is connected with drive shaft 3, and drive path is at this time：It is actively entered gear 51 → driven input
Gear 15（Main shaft 1 is driven to rotate）Gear wheel → centre duplex-gear 2 26 of → main sliding tooth 11 → intermediate duplex-gear 2 26 it is small
The pinion gear of three tooth of pinion gear → output, the 33 nearly power intake of three tooth of gear → output, 33 remote power intake → in
Raker tooth 4 25（Countershaft 2 is driven to rotate）→ center tooth 1 → pair output gear 31 → active output bevel gear wheel 34 → driven output cone
Gear 61.
Gear five：The main output gear 32 is driven by gear changing mechanism B, so that it is engaged with center tooth 2 22, is driven at this time
Route is：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main 11 → centre of sliding tooth duplex-gear
Pinion gear → output of three tooth of pinion gear → output, the 33 remote power intake of 2 26 gear wheel → centre duplex-gear 2 26
Pinion gear → center tooth 4 25 of three teeth, 33 nearly power intake（Countershaft 2 is driven to rotate）→ center tooth 2 22 → main output gear
32 → active output bevel gear wheel 34 → driven output bevel gear wheel 61.
Gear six：The main output gear 32 is driven by gearshift B, makes itself and the intermediate duplex-gear 1 on countershaft 2
Pinion gear engagement, drive path is at this time：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ main
Three tooth of pinion gear → output, the 33 telemechanical power of gear wheel → centre duplex-gear 2 26 of sliding tooth 11 → centre duplex-gear 2 26
Pinion gear → center tooth 4 25 of three tooth of pinion gear → output, the 33 nearly power intake of input terminal（Countershaft 2 is driven to rotate）→
Center tooth 3 24 → 13 gear wheels of driving duplex-gear → driving duplex-gear, 13 pinion gear → one 23 gear wheel of centre duplex-gear → in
Between one 23 pinion gear of duplex-gear → main output gear 32 → active output bevel gear wheel 34 → driven output bevel gear wheel 61.
Finally, the main sliding tooth 11 is driven by gear changing mechanism A so that pawl thereon and the sky in secondary sliding tooth 12
Slot coordinates, and then realizes that the secondary sliding tooth 12 is connected with the main shaft 1.At this point, being set by the different location of main output gear 31
Set available three gears.
Gear seven：The main output gear 32 is driven by gearshift B, makes pawl thereon and the sky on secondary output gear 31
Slot coordinates, and the secondary output gear 31 of realization is connected with drive shaft 3, and drive path is at this time：It is actively entered gear 51 → driven input
Gear 15（Main shaft 1 is driven to rotate）12 → center tooth of → secondary sliding tooth 5 27（Countershaft 2 is driven to rotate）→ center tooth 1 → pair
Output gear 31 → active output bevel gear wheel 34 → driven output bevel gear wheel 61.
Gear eight：The main output gear 32 is driven by gearshift B, so that it is engaged with center tooth 2 22, is driven at this time
Route is：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）12 → center tooth of → secondary sliding tooth 5 27
（Countershaft 2 is driven to rotate）→ center tooth 2 22 → main output gear 32 → active output bevel gear wheel 34 → driven output bevel gear wheel 61.
Gear nine：The main output gear 32 is driven by gearshift B, makes itself and the intermediate duplex-gear 1 on countershaft 2
Pinion gear engagement, drive path is at this time：It is actively entered gear 51 → driven input gear 15（Main shaft 1 is driven to rotate）→ secondary
12 → center tooth of sliding tooth 5 27（Countershaft 2 is driven to rotate）→ center tooth 3 24 → 13 gear wheels of driving duplex-gear → driving duplex
13 pinion gear of tooth → one 23 gear wheel of centre duplex-gear → one 23 pinion gear of centre duplex-gear → main output gear 32 → active output
Bevel gear 34 → driven output bevel gear wheel 61.
Wherein to gear 9, six gears pass through even-times engagement output to gear four, to rotate forward；Gear one is to gear
3 three gears pass through odd-times engagement output, for reversion.That is when main sliding tooth 11 is pushed and the output
When three teeth, 33 gear wheel engages, gear is reversion.
Using aforesaid way, the speed ratio with nine gears is can get, the user for being suitable for the diversification of demand uses, and such as should
Mini-tiller can be used as garden supervisor use.
In addition, another embodiment as the present embodiment, the slot 102 is enclosed along 101 outer one of the mounting hole to be arranged,
And it is communicated between the slot 102 and the mounting hole 101.That is, the sealing ring 103 is arranged on the shaft, and
It is sealed by baffle.
Using the gearbox body of the present embodiment, it can prevent the axis in gearbox from play occurs, improve speed change reliability, improve
The reliability that power transmits more improves the security performance of mini-tiller operation.
In addition, not occurring to beat tooth phenomenon between also ensuring gear, the damage of gear is avoided, that improves gear uses the longevity
Life.
Claims (5)
1. a kind of gear box of micro-cultivator of anti-axis play, including babinet（100）, it is arranged in the babinet（100）Upper is installation axle
Mounting hole（101）, it is characterised in that：In the mounting hole（101）Outer is provided with slot（102）, in the slot（102）Inside set
It is equipped with sealing ring（103）, in the mounting hole（101）With slot（102）It is provided with installation cover board outside（104）.
2. the gear box of micro-cultivator of anti-axis play as described in claim 1, it is characterised in that：The slot（102）Along the peace
Fill hole（101）Outer one circle setting, and with the slot（102）With the mounting hole（101）Between have gap.
3. the gear box of micro-cultivator of anti-axis play as described in claim 1, it is characterised in that：The slot（102）Along the peace
Fill hole（101）Outer one circle setting, and with the slot（102）With the mounting hole（101）Between communicate.
4. the gear box of micro-cultivator of anti-axis play as claimed in claim 1,2 or 3, it is characterised in that：The installation cover board
（104）It is mounted on the box outer surface by screw.
5. a kind of mini-tiller, including the anti-axis play gearbox described in claim 1,2,3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126997.9U CN207961468U (en) | 2018-01-25 | 2018-01-25 | A kind of gearbox of mini-tiller and its anti-axis play |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820126997.9U CN207961468U (en) | 2018-01-25 | 2018-01-25 | A kind of gearbox of mini-tiller and its anti-axis play |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961468U true CN207961468U (en) | 2018-10-12 |
Family
ID=63734971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820126997.9U Active CN207961468U (en) | 2018-01-25 | 2018-01-25 | A kind of gearbox of mini-tiller and its anti-axis play |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961468U (en) |
-
2018
- 2018-01-25 CN CN201820126997.9U patent/CN207961468U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181022 Address after: 464017 West nine street, five Li Town, Pingqiao District, Xinyang, Henan Patentee after: Li Qiang Address before: 402238 No. 6 Yungang Road, B District, Luo Huang industrial park, Jiangjin District, Chongqing. Patentee before: Chongqing ten thousand tiger Agricultural Machinery Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190813 Address after: 402283 No. 120 Park Avenue, Luohuang Town, Jiangjin District, Chongqing (A3 Building of Pingyi Locomotive Parts Workshop) Patentee after: Chongqing Household Agricultural Machinery Co., Ltd. Address before: 464017 Jiudian West Street, Wuli Town, Pingqiao District, Xinyang City, Henan Province Patentee before: Li Qiang |