CN207756806U - A kind of bar cropper - Google Patents
A kind of bar cropper Download PDFInfo
- Publication number
- CN207756806U CN207756806U CN201721922723.2U CN201721922723U CN207756806U CN 207756806 U CN207756806 U CN 207756806U CN 201721922723 U CN201721922723 U CN 201721922723U CN 207756806 U CN207756806 U CN 207756806U
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- pedestal
- sliding
- reinforcing bar
- gear
- fixed seat
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 61
- 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 44
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 241000237858 Gastropoda Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Details Of Cutting Devices (AREA)
Abstract
The utility model is related to steel bar meter technical fields, disclose a kind of bar cropper, including pedestal, the driving mechanism being set on pedestal, the movable cutter being connect with driving mechanism and the fixed cutting tool being set on pedestal, the sheared edge for shear reinforcement is formed between the movable cutter and fixed cutting tool, the control piece for controlling the reinforcing bar length sheared every time is provided on the pedestal, the control piece includes being rotatablely installed in the worm screw on pedestal, it is opened in the first sliding groove on pedestal and parallel with reinforcing bar length direction, the worm gear coordinated with worm screw and the baffle being set on worm gear, the worm screw is parallel with the first sliding groove, the worm gear sliding is set in the first sliding groove, the lead angle of the worm screw is less than the equivalent friction angle of the between cog of worm gear.The utility model blocks one end of reinforcing bar to ensure the reinforcing bar length under sheared edge shearing using baffle, has easy to operate, simple in structure, sheared length phase same advantages.
Description
Technical field
The utility model is related to steel bar meter technical field, more particularly to a kind of bar cropper.
Background technology
Bar cropper is a kind of tool used in a kind of shear reinforcement.It is general to have full-automatic reinforcing bar cutting machine and half certainly
Point of dynamic bar cropper.
With the raising of building level, the requirement for reinforcing bar this building main material is also higher and higher, is on the one hand
On the other hand it is then the raising to steel bar processing equipment processing request to the raising that bar material self character requires.
Authorization Notice No. is that the Chinese utility model patent of CN204194667U discloses a kind of reinforced bar cutting machine, is wrapped
Fixed cutting tool, movable cutter are included, the fixed cutting tool fixes the Handpiece Location of cut-out notch side by hold(ing)-down clip, described
Movable cutter is located in the casing of the cut-out notch other side, and reciprocating is driven by the toggle in casing, described
Cut-out notch on be also equipped with reinforcing bar clamping piece.The reinforcing bar clamping piece includes the briquetting on feeding platform and feeding platform,
The briquetting is fixed on the fixed frame on feeding platform, and elastic component is provided between briquetting and fixed frame, the utility model
Advantage simple with feeding, safe.
The utility model can be clamped reinforcing bar by reinforcing bar clamping piece when cutting reinforcing bar so that reinforcing bar is being cut off
When it is not easily shifted, reinforcing bar will not move when to keep bar cutting, but in actual use, often to every after shearing
The length of section reinforcing bar requires, and permissible accuracy is relatively high, and the utility model can not solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of bar cropper, and the reinforcing bar length cut every time can be made to keep one
It causes.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of bar cropper,
Including pedestal, the driving mechanism being set on pedestal, the movable cutter being connect with driving mechanism and it is set to consolidating on pedestal
Stationary knife has, and forms the sheared edge for shear reinforcement between the movable cutter and fixed cutting tool, is arranged on the pedestal useful
In the control piece of reinforcing bar length that control is sheared every time, the control piece include be rotatablely installed on pedestal worm screw, be opened in
On pedestal and the first sliding groove parallel with reinforcing bar length direction, with worm screw cooperation worm gear and with worm gear rotational installation gear
Plate, the worm screw is parallel with the first sliding groove, and the baffle sliding is set in the first sliding groove, and the lead angle of the worm screw is less than snail
The equivalent friction angle of the between cog of wheel.
By using above-mentioned technical proposal, movable cutter is cut under the driving of driving mechanism to being positioned on pedestal and passing through
The reinforcing bar of notch is sheared, in use, rotary worm makes the worm gear coordinated with worm screw and the baffle being fixedly connected with worm gear
Along worm screw length direction close to or far from sheared edge, reinforcing bar one end is passed through into sheared edge and is contacted on baffle, in baffle
When close to or far from sheared edge, the length of part of the reinforcing bar between sheared edge and baffle also changes therewith, to adjust
The length being sheared under rear reinforcing bar is sheared so that the length sheared every time can be the same, is less than snail by the lead angle of worm screw
The equivalent friction angle of the between cog of wheel so that when reinforcing bar contradicts baffle, when baffle and worm gear stress, worm and gear can self-locking,
When ensureing Continuous maching, the position of baffle is not moved, simple in structure, high precision machining.
It is further arranged to：It is rotatablely equipped with transmission shaft in the pedestal, first gear is provided on the worm screw, it is described
Be provided with second gear on transmission shaft, the first gear with second gear is orthogonal engages, be equipped on the transmission shaft
Regulation handle.
By using above-mentioned technical proposal, by rotating regulation handle when use, nibbled using second gear and first gear
Transmission is closed, worm screw rotation is driven, is rotated by regulation handle more convenient more laborsaving with finger rotary worm than direct labor.
It is further arranged to：The side of control piece is provided with fixed seat on the pedestal, is arranged in the fixed seat
It is useful for the fixing piece of fixed steel bars.
By using above-mentioned technical proposal, reinforcing bar is fixed on fixation using fixing piece and is taken, reinforcing bar when reducing shearing
It shakes.
It is further arranged to：The briquetting and be set to briquetting that the fixing piece includes fixed frame, is set on fixed frame
Elastic component between fixed frame.
By using above-mentioned technical proposal, briquetting is pressed on reinforcing bar using elastic component, to which reinforcing bar is stabilized in fixation
It takes, simple in structure, good fixing effect.
It is further arranged to：The elastic component is spring, and the both ends of the spring is inconsistent with fixed frame and briquetting respectively.
By using above-mentioned technical proposal, the restoring force generated after spring-compressed acts on briquetting, to support briquetting
It touches in, to consolidate reinforcing bar, spring has certain cushion performance, can play cushioning effect on reinforcing bar.
It is further arranged to：Adjusting bolt is threaded on the fixed frame, the briquetting is rotationally connected with adjusting spiral shell
The screw rod bottom of bolt, the spring pocket are set in adjusting bolt, and vertical third sliding slot, the pressure are offered on the fixed frame
The strip with the sliding connection of third sliding slot is provided on block.
By using above-mentioned technical proposal, by rotate adjusting bolt can make the height and position of briquetting rise or under
Drop, to adjust the distance between fixed frame and briquetting, the length of spring when passing through fixed frame so as to adjust reinforcing bar, to change
Active force of the spring to briquetting so that firm effect power when reinforcing bar is pushed down by briquetting is different, according to circumstances adjusts, structure letter
It is single, it is easy to adjust, and adjusting bolt can be sent to make smoothly slide between reinforcing bar and briquetting with used twist in continuous shear stress,
To which the end of new reinforcing bar be contacted on baffle.
It is further arranged to：The fixed seat is set to by regulating part on pedestal, and the regulating part includes being opened in bottom
Second sliding slot on seat and the first locating piece, the fixed seat sliding are connected in second sliding slot, and first locating piece is used
In position of the positioning fixed seat in second sliding slot.
By using above-mentioned technical proposal, fixed seat sliding in being positioned by the first locating piece in second sliding slot,
When fixed seat slides, the position of fixed block is moved together with fixed seat, to change position that fixed block is contradicted with reinforcing bar and cut
The distance between notch can be adjusted so that fixed effect is more preferable according to the length of reinforcing bar.
It is further arranged to：First locating piece includes being fixed on fixed seat bottom and sliding to be connected in second sliding slot
Sliding block and the positioning bolt that is threadedly connected on sliding block and is contradicted with fixed seat.
By using above-mentioned technical proposal, rotational positioning bolt, make the screw rod of positioning bolt contradict second sliding slot bottom from
And realize positioning of the fixed seat in second sliding slot, simple in structure, positioning and release are convenient.
It is further arranged to：The fixed seating face offers the groove along reinforcing bar length direction.
By using above-mentioned technical proposal, reinforcing bar is positioned in groove, can preferably prevent reinforcing bar side rolling, surely
Gu effect is more preferable.
It is further arranged to：The cross section of the groove is V-shaped.
By using above-mentioned technical proposal, the groove in V-shape section can make the axis of reinforcing bar heart line in the grooves
Surface, and have preferable fixed effect for different half jin of reinforcing bars.
In conclusion the utility model has the advantages that：
1, it is worked in coordination by worm and gear and baffle is fixed on worm gear and is slid and be set on pedestal, pass through worm screw
Rotation can be simple in structure so as to adjust the length of the reinforcing bar under each cut with the distance between controllable register and sheared edge；
2, the part that reinforcing bar is shearing is fixed in fixed seat by briquetting, and is opened up in fixed seat for preventing steel
The V-shape groove of muscle so that reinforcing bar is not easy to roll, good fixing effect；
3, by being slid fixed seat along second sliding slot and contradicting fixed seat by positioning bolt to be carried out to fixed seat
Positioning, the position that can adjust briquetting conflict reinforcing bar are arrived the distance between sheared edge, can be adjusted according to the reinforcing bar of different length
The position of briquetting so that the fixation of reinforcing bar is more firm.
Description of the drawings
Fig. 1 is example structure schematic diagram；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is enlarged drawing at C in Fig. 2；
Fig. 4 is B-B partial sectional views in Fig. 1, to indicate the connection relation of transmission shaft and worm screw；
In figure：1, pedestal；11, driving mechanism；12, the first slot；13, the second slot；2, fixed cutting tool；3, movable cutter；4、
Sheared edge；5, control piece；51, worm screw；52, the first sliding groove；53, worm gear；54, baffle；6, transmission shaft；61, second gear；62、
First gear；63, regulation handle；7, fixed seat；8, fixing piece；81, fixed frame；82, briquetting；83, elastic component；84, spiral shell is adjusted
Bolt；85, third sliding slot；86, strip；87, holder；88, crossbeam；89, adjusting screw hole；9, regulating part；91, second sliding slot；92,
Positioning piece；93, positioning bolt；94, sliding block；95, groove.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
A kind of bar cropper, as shown in Figure 1, including pedestal 1, the driving mechanism 11 and driving machine that are installed on pedestal 1
The movable cutter 3 that structure 11 connects and the fixed cutting tool 2 being installed on pedestal 1, form between movable cutter 3 and fixed cutting tool 2
Sheared edge 4 for shear reinforcement.
As shown in Figures 2 and 3, the side on pedestal 1 is provided with the control piece for controlling the reinforcing bar length sheared every time
5.Control piece 5 includes worm screw 51, the first sliding groove 52, worm gear 53 and baffle 54, is offered on pedestal 1 flat with reinforcing bar length direction
The first capable slot 12, worm screw 51 are rotatablely installed in the first slot 12, the first sliding groove 52 be opened in the top of worm screw 51 and with worm screw 51
Parallel to each other, worm gear 53 coordinates with worm screw 51, and for the rotational installation of worm gear 53 on baffle 54, the sliding of baffle 54 is installed on the first sliding groove
In 52 and towards sheared edge 4, when worm screw 51 rotates, worm gear 53 can be along the first sliding groove 52 closer or far from sheared edge 4, worm screw 51
The equivalent friction angle of the lead angle between cog that is less than worm gear 53 enable worm gear 53 and 51 self-locking of worm screw.
As shown in figure 4, the second slot 13 that is orthogonal with the first slot 12 and being connected to is offered on pedestal 1, in the second slot 13
It is rotatablely equipped with transmission shaft 6, transmission shaft 6 is coaxially installed with second gear 61 close to one end of the first slot 13, and worm screw 51 is close to
One end of two slots 13 is coaxially installed with first gear 62, and first gear 62 and second gear 61 are intermeshed, and transmission shaft 6 is far from
One end of one slot is pierced by fixed seat 7 and is fixed with regulation handle 63, laborsaving by rotating regulation handle 63 in conjunction with shown in Fig. 3
Ground drives the rotation of worm screw 51 to drive worm gear 53 to drive baffle 54 close or far from sheared edge 4.
As depicted in figs. 1 and 2, pedestal 1 is wrapped back to regulating part 9, regulating part 9 is equipped on the part of the side of control piece 5
The second sliding slot 91 being opened on pedestal 1 and the first locating piece 92 on pedestal 1 are included, peace is slid in second sliding slot 91
Equipped with fixed seat 7, the first locating piece 92 includes being fixed on the sliding block 94 of 7 bottom of fixed seat and being threadedly connected on sliding block 94
Positioning bolt 93, positioning bolt 93 pass through sliding block 94 and the bottom of second sliding slot 91 inconsistent.
As depicted in figs. 1 and 2, fixing piece 8 is installed in fixed seat 7, fixing piece 8 include fixed frame 81, briquetting 82 and
Elastic component 83, fixed frame 81 include the two stands 87 that are fixed in fixed seat 7 and the crossbeam 88 that is erected at 87 top of two stands,
Adjusting screw hole 89 is offered on crossbeam 88, adjusting bolt 84 is threaded in adjusting screw hole 89, and briquetting 82 is rotatablely installed in tune
Save the screw rod bottom of bolt 84, holder 87 is towards offering vertical third sliding slot 85,82 direction of briquetting on the face of briquetting 82
It is protruding with strip 86 to 82 direction of briquetting on the face of holder 87, strip 86, which is inserted into slide with third sliding slot 85 in third sliding slot 85, to be connected
Connect, elastic component 83 is spring, and spring is set on the screw rod of adjusting bolt 84, the both ends of spring respectively with crossbeam and briquetting 82
It is inconsistent in face of the face of crossbeam 88.
As shown in Figure 1, briquetting 82 is set as the arcwall face being recessed upwards in face of the face of fixed seat 7.It opens 7 upper surface of fixed seat
Equipped with groove 95, the section of groove 95 is V-shape, and positioned at the underface of briquetting 82.
As shown in Figure 1, the central axis of briquetting 82, groove 95 is with the axis of reinforcing bar on same perpendicular.
11 principle of driving mechanism：Motor power is by a pair of of band wheel drive flywheel shaft, then after three-stage gear reduction, then
Eccentric shaft is driven by feather key clutch, realizes 3 back and forth movement of movable cutter and the cooperation cut-out reinforcing bar of fixed cutting tool 2.
Use principle：
In use, reinforcing bar to be put on groove 95 to and sequentially passed through fixed frame 81, sheared edge 4, finally by one end of reinforcing bar
It contradicts on baffle 54, rotates regulation handle 63, worm screw 51 is driven using the engaged transmission of first gear 62 and second gear 61
Rotation, and the worm gear 53 by coordinating with worm screw 51 drives baffle 54 closer or far from sheared edge 4, and sheared edge 4 is made to arrive baffle 54
Distance be equal to the length of lengths of rebar for needing to cut, moving reinforcing bar again makes reinforcing bar contact on baffle 54.
Rotational positioning bolt 93 adjusts the position of briquetting 82, locking along the second slot sliding fixed seat 7 to unclamp fixed seat 7
Positioning bolt 93 positions fixed seat 7.
Rotation adjusting bolt 84 makes to contradict each other between briquetting 82 and reinforcing bar that reinforcing bar is fixed, the number of turns of rotation
It determines fixed tightness, in continuous cutting-off, reinforcing bar and pressure can be made by unclamping the adjusting bolt 84 of a fixing turn
It can be subjected to displacement between block 82, to move reinforcing bar, new end after bar cutting be made to contradict on baffle 54.
Starting driving mechanism 11 makes movable cutter 3 be rotated to fixed cutting tool 2 to cut off reinforcing bar.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but
As long as all being protected by Patent Law in the right of the utility model.
Claims (10)
1. a kind of bar cropper, including pedestal (1), be set on pedestal (1) driving mechanism (11), with driving mechanism (11)
The movable cutter (3) of connection and the fixed cutting tool (2) being set on pedestal (1), the movable cutter (3) and fixed cutting tool
(2) sheared edge (4) for shear reinforcement is formed between, it is characterised in that：It is provided on the pedestal (1) for controlling every time
The control piece (5) of the reinforcing bar length of shearing, the control piece (5) include rotational installation on pedestal (1) worm screw (51), open up
In on pedestal (1) and the first sliding groove (52) parallel with reinforcing bar length direction, with worm screw (51) cooperation worm gear (53) and set
The baffle (54) being placed on worm gear (53), the worm screw (51) is parallel with the first sliding groove (52), worm gear (53) the sliding setting
In the first sliding groove (52), the lead angle of the worm screw (51) is less than the equivalent friction angle of the between cog of worm gear (53).
2. a kind of bar cropper according to claim 1, it is characterised in that：It is rotatablely equipped with biography in the pedestal (1)
Moving axis (6) is provided with first gear (62) on the worm screw (51), second gear (61), institute is provided on the transmission shaft (6)
It states first gear (62) and second gear (61) is orthogonal engages, regulation handle (63) is installed on the transmission shaft (6).
3. a kind of bar cropper according to claim 1, it is characterised in that：Back to control piece (5) on the pedestal (1)
Side be provided with fixed seat (7), the fixing piece (8) for fixed steel bars is provided on the fixed seat (7).
4. a kind of bar cropper according to claim 3, it is characterised in that：The fixing piece (8) includes fixed frame
(81), the briquetting (82) being set on fixed frame (81) and the elastic component being set between briquetting (82) and fixed frame (81)
(83)。
5. a kind of bar cropper according to claim 4, it is characterised in that：The elastic component (83) is spring, described
Both ends of the spring is inconsistent with fixed frame (81) and briquetting (82) respectively.
6. a kind of bar cropper according to claim 5, it is characterised in that：It is threaded on the fixed frame (81)
Adjusting bolt (84), the briquetting (82) are rotationally connected with the screw rod bottom of adjusting bolt (84), and the spring pocket, which is set to, to be adjusted
On bolt (84), vertical third sliding slot (85) is offered on the fixed frame (81), is provided on the briquetting (82) and the
The strip (86) of three sliding slots (85) sliding connection.
7. a kind of bar cropper according to claim 3, it is characterised in that：The fixed seat (7) passes through regulating part (9)
It is set on pedestal (1), the regulating part (9) includes second sliding slot (91) and the first locating piece being opened on pedestal (1)
(92), fixed seat (7) sliding is connected in second sliding slot (91), and first locating piece (92) is for positioning fixed seat
(7) position in second sliding slot (91).
8. a kind of bar cropper according to claim 7, it is characterised in that：First locating piece (92) includes fixing
In fixed seat (7) bottom and the sliding block (94) that is connected in second sliding slot (91) of sliding and be threadedly connected on sliding block (94) and
The positioning bolt (93) contradicted with fixed seat (7).
9. a kind of bar cropper according to claim 3, it is characterised in that：Fixed seat (7) surface offers edge
The groove (95) of reinforcing bar length direction.
10. a kind of bar cropper according to claim 9, it is characterised in that：The cross section of the groove (95) is V words
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922723.2U CN207756806U (en) | 2017-12-30 | 2017-12-30 | A kind of bar cropper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721922723.2U CN207756806U (en) | 2017-12-30 | 2017-12-30 | A kind of bar cropper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207756806U true CN207756806U (en) | 2018-08-24 |
Family
ID=63182868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721922723.2U Active CN207756806U (en) | 2017-12-30 | 2017-12-30 | A kind of bar cropper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207756806U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102671A (en) * | 2019-05-08 | 2019-08-09 | 中铁十八局集团第四工程有限公司 | A kind of artificial bar cutting device and its construction method |
| CN111229992A (en) * | 2020-02-27 | 2020-06-05 | 重庆金凯特殊钢制品有限公司 | Steel bar cutting device |
| CN112872243A (en) * | 2021-01-15 | 2021-06-01 | 江西清江建设发展有限公司 | Specified length cutting equipment for reinforcing steel bar for house building |
-
2017
- 2017-12-30 CN CN201721922723.2U patent/CN207756806U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102671A (en) * | 2019-05-08 | 2019-08-09 | 中铁十八局集团第四工程有限公司 | A kind of artificial bar cutting device and its construction method |
| CN111229992A (en) * | 2020-02-27 | 2020-06-05 | 重庆金凯特殊钢制品有限公司 | Steel bar cutting device |
| CN112872243A (en) * | 2021-01-15 | 2021-06-01 | 江西清江建设发展有限公司 | Specified length cutting equipment for reinforcing steel bar for house building |
| CN112872243B (en) * | 2021-01-15 | 2022-12-06 | 江西清江建设发展有限公司 | Specified length cutting equipment for reinforcing steel bar for house building |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240105 Address after: 232000 Yuan Zhuang Lu Xi Cun Nan Yuan Xiao Qu 5-3-7, Panji District, Huainan City, Anhui Province Patentee after: Wan Yuao Address before: Room 407, building 14, Qixing garden, Nanhu District, Jiaxing City, Zhejiang Province, 314002 Patentee before: JIAXING DONGRUN CONSTRUCTION Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240402 Address after: 232000 Office 01 of Junlan Construction Engineering, Jinshan Garden Property House, Sanhe Town, Shannan New District, Huainan City, Anhui Province Patentee after: Anhui Junlan Construction Engineering Group Co.,Ltd. Country or region after: China Address before: 232000 Yuan Zhuang Lu Xi Cun Nan Yuan Xiao Qu 5-3-7, Panji District, Huainan City, Anhui Province Patentee before: Wan Yuao Country or region before: China |
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| TR01 | Transfer of patent right |