CN109204440A - A kind of energy-saving and environment-friendly Operation Van of construction - Google Patents
A kind of energy-saving and environment-friendly Operation Van of construction Download PDFInfo
- Publication number
- CN109204440A CN109204440A CN201810915162.6A CN201810915162A CN109204440A CN 109204440 A CN109204440 A CN 109204440A CN 201810915162 A CN201810915162 A CN 201810915162A CN 109204440 A CN109204440 A CN 109204440A
- Authority
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- China
- Prior art keywords
- gear
- wheel
- pedestal
- rotation axis
- planetary gear
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000012546 transfer Methods 0.000 claims abstract description 19
- 238000005260 corrosion Methods 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 11
- 230000004308 accommodation Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052702 rhenium Inorganic materials 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 7
- 239000002360 explosive Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Body Suspensions (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention discloses a kind of construction with energy-saving and environment-friendly Operation Van, including vehicle frame and wheel, the vehicle frame is equipped with transfer, the transfer includes gear ring, mounting rack, two Y type connecting rods, the mounting rack is fixed on vehicle frame, the two sides of the gear ring are fixed with the first pedestal and the second pedestal respectively, the center of first pedestal passes through rotation the first sun gear of axis connection, the center of second pedestal passes through rotation the second sun gear of axis connection, the first planetary gear and the second planetary gear are rotatably connected between first pedestal and the second pedestal, first sun gear and the second sun gear coaxial spaced are arranged and shape is identical, first planetary gear is part engagement with the second planetary gear and shape is identical.The transfer being arranged on vehicle frame of the invention realizes the effect of flexibly turning to by differential design, and turning radius is small.
Description
Technical field
The present invention relates to technical field of vehicle, particularly relate to a kind of energy-saving and environment-friendly Operation Van of construction.
Background technique
The transfer structure design of existing vehicle is simple, can only realize turning function, exists and turns to not flexible, turning half
The big problem of diameter.The wheel of the prior art does not have shock-damping structure, needs that damping device is additionally arranged on vehicle frame, and structure is complicated,
It needs to improve.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of construction with energy-saving and environment-friendly Operation Van, existing to solve
There is the transfer structure design of vehicle simple, can only realize turning function, exists and turn to not flexible, turning radius is big, and
Not the technical issues of wheel of the prior art does not have shock-damping structure, needs that damping device is additionally arranged on vehicle frame, and structure is complicated.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of construction energy-saving and environment-friendly Operation Van,
Including vehicle frame and wheel, the vehicle frame is equipped with transfer, and the transfer includes gear ring, mounting rack, two Y types companies
Bar, the mounting rack are fixed on vehicle frame, and the two sides of the gear ring are fixed with the first pedestal and the second pedestal respectively, described
The center of first pedestal is by rotation the first sun gear of axis connection, and the center of second pedestal is by rotating axis connection second too
Sun wheel, is rotatably connected to the first planetary gear and the second planetary gear, first sun between first pedestal and the second pedestal
Wheel is identical with the setting of the second sun gear coaxial spaced and shape, and first planetary gear is engaged with the second planetary gear for part and shape
Shape is identical, and the thickness of first planetary gear is greater than the thickness of the first sun gear, and first planetary gear part is engaged in first
Sun gear, second planetary gear part wheel are engaged in the second sun gear, and two rotation axis are rotationally connected with installation respectively
On frame, the outer end of two rotation axis has been respectively fixedly connected with a wheel, and the rear that gear ring is located on the mounting rack rotates
It is provided with turning-bar, sliding groove is additionally provided on the mounting rack, horizontal slide is provided with bogie on the sliding groove, and described turn
It is equipped with accommodation groove in the middle part of to frame, fixed circle wheel is fixed on the turning-bar, the turning-bar is set to the eccentric position of fixed circle wheel
Place, the fixed circle wheel are set in accommodation groove, move bogie translation, the rotation by fixed round wheel belt after the turning-bar rotation
Axis is equipped with positioning key, is arranged with slip ring in the rotation axis, and the slip ring is equipped with keyway, the setting direction of the keyway with
Rotation axis is parallel, and the slip ring is slideably positioned in rotation axis by the cooperation of keyway and positioning key, the circumference of the slip ring
Face is equipped with annular groove, and the tail portion of the Y type connecting rod is equipped with the first strip groove, and the both ends of the bogie are respectively provided with a guiding
Axis, the guiding axis are placed in first strip groove, and mounting rack is rotationally connected in the middle part of the Y type connecting rod, and the Y type connects
The head of bar is connected with sliding block by connecting shaft, and the sliding block is slideably positioned on the annular groove, close to tooth on the slip ring
The side of circle is equipped with brake block, on the mounting rack with brake disc is equipped at brake block opposite position, second motor drives
Dynamic ring gear against rotation；
The wheel includes the support frame and wheel rim being rotatedly connected with rotation axis, and support frame as described above is in equilateral triangle,
The rotation axis is located at the center of triangle, and three of support frame as described above are set between corner point and wheel rim there are three spring pressure
Bar, the line uprighting spring compression bar of the angle point of triangle and triangle center in non-stress, the spring pressure bar include hinged
In the cylinder on support frame and it is articulated with the body of rod of wheel rim, bottom is equipped with the first spring, first spring in the cylinder
The other end be set on the body of rod；
The vehicle frame is made of corrosion-resistant stainless steel material, the corrosion-resistant stainless steel material by mass percentage, by following
Group is grouped as: C:0.02%, Si:0.8%, Mn:1%, S:0.01%, P:0.03%, Cr:20%, Ni:17~18%, Mo:
7%, Cu:1%, N:0.3%, Re:0.15%, surplus Fe.
The advantageous effects of the above technical solutions of the present invention are as follows:
The transfer being arranged on vehicle frame of the invention realizes the effect of flexibly turning to, turning half by differential design
Diameter is small.Wheel of the invention has shock-damping structure, and damping effect is good.
Detailed description of the invention
Fig. 1 is structure chart of the invention.
Fig. 2 is the perspective view of transfer of the invention.
Fig. 3 is the part-structure figure one of transfer of the invention.
Fig. 4 is the part-structure figure two of transfer of the invention.
Fig. 5 is the explosive view of transfer of the invention.
Fig. 6 is the part explosive view one of transfer of the invention.
Fig. 7 is the part explosive view two of transfer of the invention.
Fig. 8 is the structural schematic diagram of tire of the invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
For convenience of description, before right direction is in Fig. 1, front end, front, direction of advance, left direction be after, rear end, after
Portion, direction of retreat.
As shown in Figures 1 to 7, the embodiment of the present invention provides a kind of construction energy-saving and environment-friendly Operation Van, including vehicle
Frame 100 and wheel 40, the vehicle frame 100 be equipped with transfer 10, the transfer 10 include gear ring 11, mounting rack 12,
Two Y type connecting rods 13, the mounting rack 12 are fixed on vehicle frame 100, and the two sides of the gear ring 11 are fixed with first respectively
Pedestal 14 and the second pedestal 15, the center of first pedestal 14 connect the first sun gear 17 by rotation axis 16, and described second
The center of pedestal 15 connects the second sun gear 18 by rotation axis 16, and the first sun gear 17, the second sun gear 18 are respectively and respectively
Rotation axis 16 be fixedly linked, the first pedestal 14, the second pedestal 15 are rotatedly connected with respective rotation axis 16 respectively, described first
The first planetary gear 19 and the second planetary gear 20,17 He of the first sun gear are rotatably connected between pedestal 14 and the second pedestal 15
Second sun gear, 18 coaxial spaced setting and shape is identical, first planetary gear 19 and the second planetary gear 20 be partially engage and
Shape is identical, and the thickness of first planetary gear 19 is greater than the thickness of the first sun gear 17, and 19 part of the first planetary gear is nibbled
Together in the first sun gear 17,20 part of the second planetary gear wheel is engaged in the second sun gear 18, and two rotation axis 16 are divided
It is not rotationally connected on mounting rack 12, the outer end of two rotation axis 16 has been respectively fixedly connected with a wheel 40, the installation
Positioned at the rear of gear ring 11, rotation is provided with turning-bar 22 on frame 12, and sliding groove 23, the cunning are additionally provided on the mounting rack 12
Horizontal sliding is provided with bogie 24 on dynamic slot 23, is equipped with accommodation groove 241 in the middle part of the bogie 24, solid on the turning-bar 22
Surely there is fixed circle wheel 25, the turning-bar 22 is set at the eccentric position of fixed circle wheel 25, and the fixed circle wheel 25 is set to accommodation groove
In 241, the turning-bar 22 by fixed circle wheel 25 drives bogies 24 to translate after rotating, the accommodation groove 241 be it is rectangular, it is described
The transverse width of accommodation groove 241 is identical as the diameter of fixed circle wheel 25, and the longitudinal length of the accommodation groove 241 is greater than fixed circle wheel 25
The transverse width direction of diameter, the accommodation groove 241 is parallel with rotation axis 16, and the rotation axis 16 is equipped with positioning key 26,
Be arranged with slip ring 27 in the rotation axis 16, the slip ring 27 is equipped with keyway 271, the setting direction of the keyway 271 with turn
Moving axis 16 is parallel, and the slip ring 27 is slideably positioned in rotation axis 16 by the cooperation of keyway 271 and positioning key 26, the cunning
The periphery of ring 27 is equipped with annular groove 272, and the tail portion of the Y type connecting rod 13 is equipped with the first strip groove 131, the bogie 24
Both ends be respectively provided with a guiding axis 28, the guiding axis 28 is placed in first strip groove 131, in the Y type connecting rod 13
Portion is rotationally connected with mounting rack 12, and the head of the Y type connecting rod 13 is connected with sliding block 30 by connecting shaft 29, and the sliding block 30 is sliding
It is dynamic to be set on the annular groove 272, brake block 31, the mounting rack 12 are equipped with close to the side of gear ring 11 on the slip ring 27
Brake disc 32 is equipped at upper and 31 opposite position of brake block, the second motor (not shown) driven gear ring 11 rotates.For side
Just it describes, following using the headstock position of vehicle frame as front, the left and right side position of corresponding vehicle frame out；When straight-line travelling,
Bogie is in central symmetry position, and the brake block of two sides is detached from brake block at this time, and brake does not work, therefore the second electricity
Machine drives ring gear against rotation, the first planetary gear and the second planetary gear to keep relative static conditions, i.e. the first planetary gear relative to gear ring
Rotation does not occur with the second planetary gear, only the first sun gear with gear ring around center revolves, thus first
Planetary gear drives the rotation of the first sun gear, and the second planetary gear drives the rotation of the second sun gear, the first sun gear and the second sun gear
Revolving speed it is identical, therefore the vehicle wheel rotational speed of two sides is identical；After turning-bar rotates clockwise, deflecting roller passes through eccentric wheel band turn
It is translated to the right to frame, the sliding block on the head of the Y type connecting rod on right side drives slip ring mobile to side by annular groove, on slip ring
Brake block mutually rubs with brake disc plays the role of slowing-down brake, i.e., applies braking action to the rotation axis on right side, when complete braking
When, the second motor drives ring gear against rotation, and the first planetary gear and the second planetary gear rotate relative to gear ring, i.e. the first planetary gear
Rotation occurs with the second planetary gear, the second sun gear on the right side of vehicle frame does not rotate, and the first sun gear continues to rotate band
The vehicle wheel rotation in dynamic left side, realizes differential mechanism effect, reduces turning radius, convenient for turning.Transfer of the invention is set to vehicle
The front of frame, the rear portion of vehicle frame can be set a wheel, become the moulding of tricycle.
As illustrated in figures 1 and 8, the wheel 40 includes the support frame 42 and wheel rim 43 being rotatedly connected with rotation axis 16,
Tire (not shown) is installed, support frame as described above 42 is in equilateral triangle, and the rotation axis 16 is located at triangle on the wheel rim 43
At the center of shape, set between three corner points and wheel rim 43 of support frame as described above 42 there are three spring pressure bar, in non-stress three
The line uprighting spring compression bar of angular angle point and triangle center, the spring pressure bar include the cylinder being articulated on support frame 42
Body 44 and the body of rod 45 for being articulated with wheel rim 43, bottom is equipped with the first spring (not shown) in the cylinder 44, first bullet
The other end of spring is set on the body of rod 45.When vehicle falls from eminence or pot hole not usually, the intracorporal spring of cylinder is pressed
Contracting, the center of support frame also sink simultaneously, so that rotation axis also moves down, so as to alleviate impact force, play damping
Effect.
The vehicle frame is made of corrosion-resistant stainless steel material, the corrosion-resistant stainless steel material by mass percentage, by following
Group is grouped as: C:0.02%, Si:0.8%, Mn:1%, S:0.01%, P:0.03%, Cr:20%, Ni:17~18%, Mo:
7%, Cu:1%, N:0.3%, Re:0.15%, surplus Fe.The corrosion-resistant stainless steel material has excellent corrosion resistance
Energy, mechanical property and welding performance.
Embodiment one:
The corrosion-resistant stainless steel material is by mass percentage, composed of the following components: C:0.02%, Si:0.8%, Mn:
1%, S:0.01%, P:0.03%, Cr:20%, Ni:17%, Mo:7%, Cu:1%, N:0.3%, Re:0.15%, surplus
For Fe.
Embodiment two:
The corrosion-resistant stainless steel material is by mass percentage, composed of the following components: C:0.02%, Si:0.8%, Mn:
1%, S:0.01%, P:0.03%, Cr:20%, Ni:18%, Mo:7%, Cu:1%, N:0.3%, Re:0.15%, surplus
For Fe.
Embodiment three:
The corrosion-resistant stainless steel material is by mass percentage, composed of the following components: C:0.02%, Si:0.8%, Mn:
1%, S:0.01%, P:0.03%, Cr:20%, Ni:17.5%, Mo:7%, Cu:1%, N:0.3%, Re:0.15%, remaining
Amount is Fe.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of energy-saving and environment-friendly Operation Van of construction, including vehicle frame and wheel, which is characterized in that the vehicle frame is equipped with
Transfer, the transfer include gear ring, mounting rack, two Y type connecting rods, and the mounting rack is fixed on vehicle frame, described
The two sides of gear ring are fixed with the first pedestal and the second pedestal respectively, and the center of first pedestal passes through rotation axis connection the
One sun gear, the center of second pedestal by rotation the second sun gear of axis connection, first pedestal and the second pedestal it
Between be rotatably connected to the first planetary gear and the second planetary gear, first sun gear and the setting of the second sun gear coaxial spaced and shape
Shape is identical, and first planetary gear is part engagement with the second planetary gear and shape is identical, and the thickness of first planetary gear is big
In the thickness of the first sun gear, first planetary gear part is engaged in the first sun gear, and second planetary gear part wheel is nibbled
Together in the second sun gear, two rotation axis are rotationally connected on mounting rack respectively, the outer end difference of two rotation axis
It is fixedly connected with a wheel, the rear rotation that gear ring is located on the mounting rack is provided with turning-bar, also sets on the mounting rack
There is sliding groove, horizontal sliding is provided with bogie on the sliding groove, is equipped with accommodation groove, the turning-bar in the middle part of the bogie
On be fixed with it is fixed circle wheel, the turning-bar be set to it is fixed circle wheel eccentric position at, it is described it is fixed circle wheel is set in accommodation groove, institute
It is translated after stating turning-bar rotation by the dynamic bogie of fixed round wheel belt, the rotation axis is equipped with positioning key, covers in the rotation axis
Equipped with slip ring, the slip ring is equipped with keyway, and the setting direction of the keyway is parallel with rotation axis, and the slip ring passes through keyway
Cooperation with positioning key is slideably positioned in rotation axis, and the periphery of the slip ring is equipped with annular groove, the tail of the Y type connecting rod
Portion is equipped with the first strip groove, and the both ends of the bogie are respectively provided with a guiding axis, and the guiding axis is placed in first bar shaped
Slot is rotationally connected with mounting rack in the middle part of the Y type connecting rod, and the head of the Y type connecting rod is connected with sliding block by connecting shaft, institute
It states sliding block to be slideably positioned on the annular groove, brake block is equipped with close to the side of gear ring on the slip ring, on the mounting rack
With at brake block opposite position be equipped with brake disc, the second motor driven ring gear against rotation；
The wheel includes the support frame and wheel rim being rotatedly connected with rotation axis, and support frame as described above is in equilateral triangle, described
Rotation axis is located at the center of triangle, and three of support frame as described above set between corner point and wheel rim there are three spring pressure bar,
The line uprighting spring compression bar of the angle point of triangle and triangle center when non-stress, the spring pressure bar include being articulated with support
Cylinder on frame and the body of rod for being articulated with wheel rim, bottom is equipped with the first spring in the cylinder, first spring it is another
End is set on the body of rod；
The rack is made of corrosion-resistant stainless steel material, the corrosion-resistant stainless steel material by mass percentage, by following components
Composition: C:0.02%, Si:0.8%, Mn:1%, S:0.01%, P:0.03%, Cr:20%, Ni:17~18%, Mo:7%,
Cu:1%, N:0.3%, Re:0.15%, surplus Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810915162.6A CN109204440B (en) | 2018-08-13 | 2018-08-13 | Energy-saving and environment-friendly operation vehicle for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810915162.6A CN109204440B (en) | 2018-08-13 | 2018-08-13 | Energy-saving and environment-friendly operation vehicle for building construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109204440A true CN109204440A (en) | 2019-01-15 |
| CN109204440B CN109204440B (en) | 2021-02-05 |
Family
ID=64987835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810915162.6A Active CN109204440B (en) | 2018-08-13 | 2018-08-13 | Energy-saving and environment-friendly operation vehicle for building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109204440B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109061A (en) * | 2021-04-22 | 2021-07-13 | 安徽信息工程学院 | Planetary gear connecting rod linkage type automobile sideslip test bench |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007543A (en) * | 2006-01-27 | 2007-08-01 | 株式会社万都 | Variable gear ratio steering apparatus for an automobile |
| WO2014001003A2 (en) * | 2012-06-26 | 2014-01-03 | Zf Lenksysteme Gmbh | Planetary gear with position offset |
| CN108146499A (en) * | 2016-12-06 | 2018-06-12 | 现代自动车株式会社 | For the emergency turn system of vehicle |
| CN109017898A (en) * | 2018-08-13 | 2018-12-18 | 翁招娣 | A kind of energy saving and environment friendly construction operation tool car |
| CN109131553A (en) * | 2018-08-13 | 2019-01-04 | 王春明 | A kind of Operation Van of the construction with LED light |
-
2018
- 2018-08-13 CN CN201810915162.6A patent/CN109204440B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007543A (en) * | 2006-01-27 | 2007-08-01 | 株式会社万都 | Variable gear ratio steering apparatus for an automobile |
| WO2014001003A2 (en) * | 2012-06-26 | 2014-01-03 | Zf Lenksysteme Gmbh | Planetary gear with position offset |
| CN108146499A (en) * | 2016-12-06 | 2018-06-12 | 现代自动车株式会社 | For the emergency turn system of vehicle |
| CN109017898A (en) * | 2018-08-13 | 2018-12-18 | 翁招娣 | A kind of energy saving and environment friendly construction operation tool car |
| CN109131553A (en) * | 2018-08-13 | 2019-01-04 | 王春明 | A kind of Operation Van of the construction with LED light |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109061A (en) * | 2021-04-22 | 2021-07-13 | 安徽信息工程学院 | Planetary gear connecting rod linkage type automobile sideslip test bench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109204440B (en) | 2021-02-05 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210118 Address after: 310000 Building 1, No. 439, Jincheng Road, Beigan street, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant after: Hengyuan Construction Holding Group Co.,Ltd. Address before: No.128, Danhe East Road, Xiangshan County, Ningbo City, Zhejiang Province, 315700 Applicant before: Tang Chao |
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