CN107379268B - A kind of mixer truck can be avoided concrete splashing - Google Patents
A kind of mixer truck can be avoided concrete splashing Download PDFInfo
- Publication number
- CN107379268B CN107379268B CN201710860469.6A CN201710860469A CN107379268B CN 107379268 B CN107379268 B CN 107379268B CN 201710860469 A CN201710860469 A CN 201710860469A CN 107379268 B CN107379268 B CN 107379268B
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- China
- Prior art keywords
- welded
- mixer truck
- splash
- column
- mixing drum
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4234—Charge or discharge systems therefor
- B28C5/4244—Discharging; Concrete conveyor means, chutes or spouts therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a kind of mixer trucks that can be avoided concrete splashing, including mixer truck erecting bed, the top side of the mixer truck erecting bed is equipped with mixing drum, the mixing drum includes the taper discharge barrel for stirring cylinder and being welded on stirring cylinder, the taper discharge barrel is welded with elongation cylinder far from the side of stirring cylinder, sliding slot is offered at the top of the mixer truck erecting bed, the sliding slot is located at the side of mixing drum, support column is slidably fitted in the sliding slot, the top of mixer truck erecting bed is extended at the top of the support column and is welded with splash-proof canister, the side of the elongation cylinder extends in splash-proof canister, sealing ring is welded on the outside of the elongation cylinder.Practical performance of the present invention is high, and structure is simple, easy to operate, convenient for moving to splash-proof canister, and convenient for the position of splash-proof canister is fixed, so that splash-proof canister is set in the outside of sealing ring, splashes, is convenient for people to use when can prevent from toppling over concrete.
Description
Technical field
The present invention relates to technical field of concrete mixers more particularly to a kind of stirrings that can be avoided concrete splashing
Vehicle.
Background technique
Concrete mixer truck is the specialized truck for transporting concrete for building, all device cylinder type on this kind of truck
Mixing drum to deliver mixed concrete, during transportation can remain that mixing drum rotates, to guarantee to be delivered
Concrete will not solidify, and application No. is 201420276858.6 patent documents to provide a kind of clean type concrete mixer, one
Grade funnel upper opening is provided with rubber surrounding edge, which is semi-surrounding structure, close to mixing drum direction, level-one funnel two
Mud guard is provided with above side to secondary funnel, mud guard is to be vertically arranged, and contact with seamless on the inside of secondary funnel upper ring edge,
It can prevent the concrete leaked out from level-one funnel from falling out, the opening that secondary funnel corresponds to discharge chute is provided with one
Rubber retaining ring is enclosed, rubber retaining ring extends in the sliding slot of discharge chute, and concrete can be prevented to be splashed to outside, but this structure
It is not easy to that the device that splashproof uses is moved and fixed, and splashproof effect is not good enough, therefore we have proposed a kind of energy
The mixer truck for enough avoiding concrete from splashing is for solving the above problems.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of stirrings that can be avoided concrete splashing
Vehicle.
A kind of mixer truck can be avoided concrete splashing proposed by the present invention, including mixer truck erecting bed, the stirring
The top side of vehicle erecting bed is equipped with mixing drum, and the mixing drum includes that the taper for stirring cylinder and being welded on stirring cylinder goes out
Barrel, the taper discharge barrel are welded with elongation cylinder far from the side of stirring cylinder, open up at the top of the mixer truck erecting bed
There is sliding slot, the sliding slot is located at the side of mixing drum, support column is slidably fitted in the sliding slot, is prolonged at the top of the support column
It extends to the top of mixer truck erecting bed and is welded with splash-proof canister, the side of the elongation cylinder extends in splash-proof canister, the elongation
The outside of cylinder is welded with sealing ring；
The support column offers rotation slot far from the side of mixing drum, and sleeve column, institute are rotatably equipped in the rotation slot
It states rotation slot and offers through-hole on the side inner wall of mixing drum, the sleeve column is hollow structure, the sleeve column internal screw thread peace
Equipped with screw rod, the both ends of the screw rod are mutually welded with the two sides inner wall of sliding slot respectively, and the screw rod is located in through-hole, the sleeve column
Top be equipped with installation driving motor on the support columns, be welded with gear, the sleeve column on the output shaft of the driving motor
Outside be equipped with rack gear, the wheel and rack is meshed；
The top of the through-hole is equipped with the installation cavity opened up on the support columns, offers in the bottom interior wall of the installation cavity
Card column hole is slidably fitted with card column in the card column hole, card hole is offered on the screw rod, and the card column is mutually clamped with card hole,
It is fixedly installed with stepper motor in the installation cavity, reel, the reel are welded on the output shaft of the stepper motor
On be arranged with rope, be fixedly connected at the top of the one end of the rope far from reel and card column.
Preferably, latch plate is welded on the side inner wall of the installation cavity, latch plate is located at the lower section of reel, described
The bottom of latch plate is welded with spring, and the bottom end of the spring mutually welds with the top of card column, offers and pass through on the latch plate
Perforation, the rope are slidably connected with through hole.
Preferably, annular spacing groove is offered on the sleeve column, the top and bottom of the rotation slot are welded with limit
Bar, two gag lever post sides close to each other are slidably connected with annular spacing groove.
Preferably, be fixedly installed with sealing ring on the outside of the sealing ring, the outside of the sealing ring and splash-proof canister it is interior
The cooperation of sideslip dynamic sealing.
Preferably, the splash-proof canister is welded with discharge bucket far from the side of mixing drum, and the discharge bucket is hollow structure, institute
Discharge bucket is stated to be connected with the inside of splash-proof canister.
Preferably, the support column is screwed far from the side of mixing drum mounting plate, the driving motor and installation
Plate mutually welds.
Preferably, the inner sidewall of the sleeve column is equipped with internal screw thread, and the outside of the screw rod is equipped with external screw thread, the outer spiral shell
Line is meshed with internal screw thread.
Preferably, the vertical section of the sleeve column is ring structure.
In the present invention, pass through sliding slot, support column, splashproof in a kind of mixer truck can be avoided concrete splashing
Cylinder, screw rod, through-hole, sleeve column, rotation slot, driving motor, gear, annular spacing groove and gag lever post match, convenient for splash-proof canister
It is moved, so that splash-proof canister is mobile and is set in the outside of sealing ring, by mixer truck erecting bed, mixing drum, extends cylinder, close
Seal ring, card hole, card column, card column hole, installation cavity, reel, stepper motor, rope, spring, latch plate and discharge bucket match,
It splashes, is convenient for people to use when being fixed convenient for the position to splash-proof canister, and can prevent from toppling over concrete.
Practical performance of the present invention is high, and structure is simple, easy to operate, convenient for moving to splash-proof canister, and convenient for splashproof
The position of cylinder is fixed, so that splash-proof canister is set in the outside of sealing ring, splashes when can prevent from toppling over concrete, side
People use.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of mixer truck that can be avoided concrete splashing proposed by the present invention；
Fig. 2 is a kind of schematic cross-sectional view of mixer truck that can be avoided concrete splashing proposed by the present invention；
Fig. 3 is that a kind of stereochemical structure of the part-structure of mixer truck that can be avoided concrete splashing proposed by the present invention is shown
It is intended to；
Fig. 4 is a kind of sectional structure signal of the part A of mixer truck that can be avoided concrete splashing proposed by the present invention
Figure；
Fig. 5 is a kind of partial enlarged view of the part A of mixer truck that can be avoided concrete splashing proposed by the present invention；
Fig. 6 is a kind of stereochemical structure signal of the mixing drum of mixer truck that can be avoided concrete splashing proposed by the present invention
Figure；
Fig. 7 is a kind of stereochemical structure signal of the sleeve column of mixer truck that can be avoided concrete splashing proposed by the present invention
Figure.
In figure: 1 mixer truck erecting bed, 2 mixing drums, 3 elongation cylinders, 4 sliding slots, 5 support columns, 6 splash-proof canisters, 7 sealing rings, 8
Bar, 9 through-holes, 10 sleeve columns, 11 rotation slots, 12 driving motors, 13 gears, 14 card holes, 15 card columns, 16 card column holes, 17 installation cavitys, 18
Reel, 19 stepper motors, 20 ropes, 21 springs, 22 latch plates, 23 annular spacing grooves, 24 gag lever posts, 25 discharge buckets.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment
With reference to Fig. 1-7, a kind of mixer truck that can be avoided concrete splashing, including mixer truck peace are proposed in the present embodiment
Platform 1 is filled, the top side of mixer truck erecting bed 1 is equipped with mixing drum 2, and mixing drum 2 includes stirring cylinder and is welded on stirring cylinder
On taper discharge barrel, taper discharge barrel far from stirring cylinder side be welded with elongation cylinder 3, the top of mixer truck erecting bed 1
Sliding slot 4 is offered, sliding slot 4 is located at the side of mixing drum 2, and support column 5 is slidably fitted in sliding slot 4, and the top of support column 5 extends
To mixer truck erecting bed 1 top and be welded with splash-proof canister 6, the side of elongation cylinder 3 extends in splash-proof canister 6, elongation cylinder 3 it is outer
Side is welded with sealing ring 7；Support column 5 offers rotation slot 11 far from the side of mixing drum 2, and set is rotatably equipped in rotation slot 11
Column 10, rotation slot 11 offer through-hole 9 on the side inner wall of mixing drum 2, and sleeve column 10 is hollow structure, 10 internal screw thread of sleeve column
Screw rod 8 is installed, the both ends of screw rod 8 are mutually welded with the two sides inner wall of sliding slot 4 respectively, and screw rod 8 is located in through-hole 9, sleeve column 10
Top is equipped with the driving motor 12 being mounted on support column 5, is welded with gear 13 on the output shaft of driving motor 12, sleeve column 10
Outside is equipped with rack gear, and gear 13 is meshed with rack gear；The top of through-hole 9 is equipped with the installation cavity 17 being provided on support column 5, installation
Card column hole 16 is offered in the bottom interior wall of chamber 17, and card column 15 is slidably fitted in card column hole 16, offers card hole on screw rod 8
14, card column 15 is clamped with 14 phase of card hole, is fixedly installed with stepper motor 19 in installation cavity 17, is welded on the output shaft of stepper motor 19
It is connected to reel 18, rope 20 is arranged on reel 18, the one end of rope 20 far from reel 18 and the top of card column 15 are solid
Fixed connection, sliding slot 4, support column 5, splash-proof canister 6, screw rod 8, through-hole 9, sleeve column 10, rotation slot 11, driving motor 12, gear 13,
Under the cooperation of annular spacing groove 23 and gag lever post 24, convenient for being moved to splash-proof canister 6, so that splash-proof canister 6 is mobile and is arranged
In the outside of sealing ring 7, and can prevent from toppling over concrete when, splashes, and is convenient for people to use, practicability of the present invention
Can be high, structure is simple, and it is easy to operate, convenient for being moved to splash-proof canister 6, and convenient for the position of splash-proof canister 6 is fixed, make
The outside that splash-proof canister 6 is set in sealing ring 7 is obtained, splashes, is convenient for people to use when can prevent from toppling over concrete.
In the present embodiment, latch plate 22 is welded on the side inner wall of installation cavity 17, latch plate 22 is located at reel 18
Lower section, the bottom of latch plate 22 are welded with spring 21, and the bottom end of spring 21 is mutually welded with the top of card column 15, opened on latch plate 22
Equipped with through hole, rope 20 is slidably connected with through hole, offers annular spacing groove 23 on sleeve column 10, the top of rotation slot 11 and
Bottom is welded with gag lever post 24, and two gag lever posts 24 side close to each other is slidably connected with annular spacing groove 23, sealing
The outside of ring 7 is fixedly installed with sealing ring, and the outside of sealing ring and the inside of splash-proof canister 6 are slidingly sealed cooperation, and splash-proof canister 6 is separate
The side of mixing drum 2 is welded with discharge bucket 25, and discharge bucket 25 is hollow structure, and discharge bucket 25 is connected with the inside of splash-proof canister 6,
Support column 5 is screwed far from the side of mixing drum 2 mounting plate, and driving motor 12 is mutually welded with mounting plate, the side of sleeve column 10
Wall is equipped with internal screw thread, and the outside of screw rod 8 is equipped with external screw thread, and external screw thread is meshed with internal screw thread, and the vertical section of sleeve column 10 is ring
Shape structure, sliding slot 4, support column 5, splash-proof canister 6, screw rod 8, through-hole 9, sleeve column 10, rotation slot 11, driving motor 12, gear 13,
Under the cooperation of annular spacing groove 23 and gag lever post 24, convenient for being moved to splash-proof canister 6, so that splash-proof canister 6 is mobile and is arranged
In the outside of sealing ring 7, in mixer truck erecting bed 1, mixing drum 2, elongation cylinder 3, sealing ring 7, card hole 14, card column 15, card column hole
16, under the cooperation of installation cavity 17, reel 18, stepper motor 19, rope 20, spring 21, latch plate 22 and discharge bucket 25, just
It splashes, is convenient for people to use when being fixed in the position to splash-proof canister 6, and can prevent from toppling over concrete, this
Invention practical performance is high, and structure is simple, easy to operate, convenient for moving to splash-proof canister 6, and convenient for the position to splash-proof canister 6
It is fixed, so that splash-proof canister 6 is set in the outside of sealing ring 7, splashes when can prevent from toppling over concrete, facilitate people
Use.
In the present embodiment, when mixing drum 2 does not carry out discharging work, splash-proof canister 6 is located at the side of sealing ring 7, and card column
15 are located in card column hole 16, and spring 21 is in compressive state, when mixing drum 2 needs to carry out discharging work, start driving motor
12, the output shaft driven gear 13 of driving motor 12 rotates, and gear 13 is rotated by rack drives sleeve column 10, at this time sleeve column
10 are rotated in rotation slot 11, and gag lever post 24 is slided in annular spacing groove 23, due between sleeve column 10 and screw rod 8
To be threadedly coupled, the rotation of sleeve column 10 will drive support column 5 to move, and support column 5 is slided in sliding slot 4 at this time, support
Column 5 drives splash-proof canister 6 to be moved to close, mixing drum 2 direction, so that sealing ring 7 is located at the inside of splash-proof canister 6, support
Column 5 continues to move to, so that card column 15 is located at the surface of card hole 14, closes driving motor 12 at this time, starts stepper motor 19, step
Output shaft into motor 19 drives reel 18 to be rotated, and the compression of spring 21 at this time obtains elastic force and pushes card column 15, card column 15
The slide downward in card column hole 16 is fixed the position of support column 5 so that card column 15 is caught in card hole 14, thus fixed
The position of splash-proof canister 6,2 Stirring cylinder 2 of mixing drum is rotated with rotary packing ring 7 at this time, and sealing ring 7 rotates in splash-proof canister 6, this
When concrete from elongation cylinder 3 be transmitted in splash-proof canister 6, concrete splashes part concrete when falling into 6 bottom of splash-proof canister, prevent at this time
The side wall for splashing cylinder 6 will stop the concrete splash, so that concrete is not splashed to the outside of splash-proof canister 6, realizes and stir
Mix the anti-spattering function of vehicle.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of mixer truck that can be avoided concrete splashing, including mixer truck erecting bed (1), which is characterized in that the stirring
The top side of vehicle erecting bed (1) is equipped with mixing drum (2), and the mixing drum (2) includes stirring cylinder and is welded on stirring cylinder
On taper discharge barrel, the taper discharge barrel is welded with elongation cylinder (3), mixer truck installation far from the side of stirring cylinder
It is offered at the top of platform (1) sliding slot (4), the sliding slot (4) is located at the side of mixing drum (2), is slidably installed in the sliding slot (4)
Have support column (5), extend to the top of mixer truck erecting bed (1) at the top of the support column (5) and be welded with splash-proof canister (6),
The side of elongation cylinder (3) extends in splash-proof canister (6), is welded with sealing ring (7) on the outside of the elongation cylinder (3)；
The support column (5) offers rotation slot (11) far from the side of mixing drum (2), rotational installation in the rotation slot (11)
Have sleeve column (10), the rotation slot (11) offers through-hole (9) on the side inner wall of mixing drum (2), the sleeve column (10)
For hollow structure, sleeve column (10) internal screw thread is equipped with screw rod (8), the both ends of the screw rod (8) respectively with sliding slot (4) two
Side inner wall mutually welds, and the screw rod (8) is located in through-hole (9), and the top of the sleeve column (10), which is equipped with, to be mounted on support column (5)
Driving motor (12), be welded with gear (13) on the output shaft of the driving motor (12), set on the outside of the sleeve column (10)
There is rack gear, the gear (13) is meshed with rack gear；
The top of the through-hole (9) is equipped with the installation cavity (17) that is provided on support column (5), in the bottom of the installation cavity (17)
It is offered on wall card column hole (16), is slidably fitted with card column (15) in the card column hole (16), offers card on the screw rod (8)
Hole (14), the card column (15) mutually clamp with card hole (14), are fixedly installed with stepper motor (19), institute in the installation cavity (17)
It states and is welded on the output shaft of stepper motor (19) reel (18), is arranged with rope (20) on the reel (18), it is described
It is fixedly connected at the top of one end and card column (15) of rope (20) separate reel (18).
2. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the installation cavity
(17) it is welded on side inner wall latch plate (22), latch plate (22) is located at the lower section of reel (18), the latch plate
(22) bottom is welded with spring (21), and the bottom end of the spring (21) and the top of card column (15) are mutually welded, the latch plate
(22) through hole is offered on, the rope (20) is slidably connected with through hole.
3. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the sleeve column
(10) it being offered on annular spacing groove (23), the top and bottom of the rotation slot (11) are welded with gag lever post (24), and two
Gag lever post (24) side close to each other is slidably connected with annular spacing groove (23).
4. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the sealing ring
(7) it is fixedly installed with sealing ring on the outside of, is slidingly sealed cooperation on the inside of the outside and splash-proof canister (6) of the sealing ring.
5. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the splash-proof canister
(6) side far from mixing drum (2) is welded with discharge bucket (25), and the discharge bucket (25) is hollow structure, the discharge bucket
(25) it is connected with the inside of splash-proof canister (6).
6. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the support column
(5) side far from mixing drum (2), which is screwed, mounting plate, and the driving motor (12) is mutually welded with mounting plate.
7. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the sleeve column
(10) inner sidewall is equipped with internal screw thread, and the outside of the screw rod (8) is equipped with external screw thread, and the external screw thread is mutually nibbled with internal screw thread
It closes.
8. a kind of mixer truck that can be avoided concrete splashing according to claim 1, which is characterized in that the sleeve column
(10) vertical section is ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860469.6A CN107379268B (en) | 2017-09-21 | 2017-09-21 | A kind of mixer truck can be avoided concrete splashing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860469.6A CN107379268B (en) | 2017-09-21 | 2017-09-21 | A kind of mixer truck can be avoided concrete splashing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107379268A CN107379268A (en) | 2017-11-24 |
| CN107379268B true CN107379268B (en) | 2019-04-30 |
Family
ID=60350346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710860469.6A Expired - Fee Related CN107379268B (en) | 2017-09-21 | 2017-09-21 | A kind of mixer truck can be avoided concrete splashing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107379268B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865580B (en) * | 2017-12-28 | 2020-09-08 | 福州偌晟科技有限公司 | Building cement mixer rubbish reducing mechanism |
| CN116444112B (en) * | 2023-06-14 | 2023-08-25 | 山东共达环保科技有限公司 | Sludge and livestock manure fermentation equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2872730A1 (en) * | 2004-07-09 | 2006-01-13 | Bernard Coeuret | Portable mixer e.g. concrete mixer, for e.g. construction site, has jack mounted between cradle and shank to tilt drum in one position in which drum`s axis is inclined towards top and another position where axis is inclined towards bottom |
| CN201784048U (en) * | 2010-08-27 | 2011-04-06 | 上海市宝山区青少年科学技术指导站 | Device for preventing leakage of cement paste at outlet of mixer truck |
| CN103331821A (en) * | 2013-06-05 | 2013-10-02 | 三一汽车制造有限公司 | Discharging device and stirring vehicle |
| CN204036656U (en) * | 2014-07-29 | 2014-12-24 | 陕西通力专用汽车有限责任公司 | Concrete mixing and transporting car and tilt bed material-receiving device thereof |
| CN205929044U (en) * | 2016-07-15 | 2017-02-08 | 天津顺德混凝土工程有限公司 | Splashproof is penetrated and is protected frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9943982B2 (en) * | 2015-01-30 | 2018-04-17 | Leslie R. Connard, III | Concrete mixing transport truck chute washout system |
-
2017
- 2017-09-21 CN CN201710860469.6A patent/CN107379268B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2872730A1 (en) * | 2004-07-09 | 2006-01-13 | Bernard Coeuret | Portable mixer e.g. concrete mixer, for e.g. construction site, has jack mounted between cradle and shank to tilt drum in one position in which drum`s axis is inclined towards top and another position where axis is inclined towards bottom |
| CN201784048U (en) * | 2010-08-27 | 2011-04-06 | 上海市宝山区青少年科学技术指导站 | Device for preventing leakage of cement paste at outlet of mixer truck |
| CN103331821A (en) * | 2013-06-05 | 2013-10-02 | 三一汽车制造有限公司 | Discharging device and stirring vehicle |
| CN204036656U (en) * | 2014-07-29 | 2014-12-24 | 陕西通力专用汽车有限责任公司 | Concrete mixing and transporting car and tilt bed material-receiving device thereof |
| CN205929044U (en) * | 2016-07-15 | 2017-02-08 | 天津顺德混凝土工程有限公司 | Splashproof is penetrated and is protected frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107379268A (en) | 2017-11-24 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190408 Address after: 511458 No. 101 Dongdi Street, Gaosha Village, Dagang Town, Nansha District, Guangzhou City, Guangdong Province Applicant after: GUANGDONG RONGQUANHUI CONCRETE Co.,Ltd. Address before: 710000 0806-15, 8 floor, Lu Gang building, Xi'an international port area, Shaanxi. Applicant before: XI'AN JUTOU WEILAI NETWORK TECHNOLOGY CO.,LTD. |
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Granted publication date: 20190430 Termination date: 20210921 |