CN111716543A - Fiber concrete apparatus for producing - Google Patents
Fiber concrete apparatus for producing Download PDFInfo
- Publication number
- CN111716543A CN111716543A CN202010642374.9A CN202010642374A CN111716543A CN 111716543 A CN111716543 A CN 111716543A CN 202010642374 A CN202010642374 A CN 202010642374A CN 111716543 A CN111716543 A CN 111716543A
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- CN
- China
- Prior art keywords
- wall
- box
- connecting rod
- main body
- rod
- 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.)
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- 239000004567 concrete Substances 0.000 title claims abstract description 37
- 239000000835 fiber Substances 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 241000883990 Flabellum Species 0.000 claims abstract description 8
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- 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
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a fiber concrete production device which comprises a main body mechanism, a sliding mechanism, a fixed rod, an installation block, fan blades, a guide shaft, a connecting rod, a sliding rod, a supporting rod, a rotating mechanism and a flow guide mechanism. The invention has the beneficial effects that: the dead lever is installed in main body mechanism's inside, the guiding axle is installed in the inner wall of dead lever and is rotated and connect in the installation piece, the lateral wall of installation piece is cyclic annular equidistance and installs a plurality of flabellum, the one end of bracing piece is rotated and is connected in installation piece and the other end and slide bar rotation, the bottom in the dead lever is installed to the connecting rod, the slide bar slides in the inner wall of connecting rod, contradict the flabellum when main body mechanism is inside to the concrete, make the flabellum drive installation piece rotate, and then make the bracing piece rotate the inner wall of drive slide bar at the connecting rod and make a round trip to slide, and then make the tip of slide bar smash the concrete that falls into main body mechanism inside and lead to, thereby the condition.
Description
Technical Field
The invention relates to a production device, in particular to a fiber concrete production device, and belongs to the technical field of concrete production.
Background
Fiber concrete is a general term for composite materials composed of fibers and cement base materials (cement stone, mortar or concrete). The main disadvantages of set cement, mortar and concrete are: the fiber has low tensile strength, small ultimate elongation and crisp property, and can overcome the defects by adding the fiber with high tensile strength, large ultimate elongation and good alkali resistance. Cement-based composite materials composed of cement paste, mortar or concrete as a base material and fiber as a reinforcing material are called fiber concrete.
However, when the traditional fiber concrete production device is used for feeding the interior of the device, the feeding device is usually blocked due to too much feeding of an operator, so that the redundant fiber concrete is leaked on the working table, and the use efficiency of the concrete production device is not improved.
Disclosure of Invention
The invention aims to solve the problems, and provides a fiber concrete production device which is flexible to operate and convenient to install, and the slide rod slides in the box body through the acting force of concrete on the fan blades, so that the box body can be prevented from being blocked during concrete feeding, and the use efficiency of the production device is improved.
The invention achieves the aim through the following technical scheme, and the fiber concrete production device comprises a main body mechanism, wherein a sliding mechanism is arranged in the main body mechanism, the sliding mechanism comprises a fixed rod, an installation block, fan blades, a guide shaft, a connecting rod, a sliding rod and a supporting rod, the fixed rod is fixedly arranged on the inner wall of the main body mechanism, the guide shaft is arranged on the side wall of the fixed rod and is rotatably connected with the installation block, the installation block is rotatably connected in the main body mechanism, the fan blades are fixedly connected to the side wall of the installation block in an annular shape at equal intervals, one end of the supporting rod is rotatably connected with the side wall of the installation block, the other end of the supporting rod is rotatably connected with the sliding rod, the sliding rod is slidably connected with the inner wall of the connecting rod, the connecting rod is fixedly arranged at the bottom end of the fixed rod, and a flow guide mechanism is arranged in the main body mechanism.
Preferably, in order to facilitate the operating personnel pour the concrete into the box inside, the main part mechanism includes material loading mouth and box, the top of box is equipped with the material loading mouth, the installation piece rotate connect in the inside of box.
Preferably, in order to fix the box body and the device together, the main mechanism further comprises a fixing plate, the fixing plate is fixedly connected to the bottom end of the box body and communicated with the inside of the box body, and the four screw holes are symmetrically arranged on the inner wall of the fixing plate in a pairwise and group mode.
Preferably, in order to facilitate the resetting of the fixture block, the rotating mechanism comprises a torsion spring, a long rod and a fixture block, one end of the torsion spring is fixedly connected to the side wall of the box body, the other end of the torsion spring is fixedly installed on the side wall of the fixture block, the fixture block is rotatably connected to the side wall of the box body, and one end of the long rod penetrates through and is fixedly connected to the inner wall of the fixture block.
Preferably, in order to facilitate the discharge of the redundant concrete into the box body, the flow guide mechanism comprises a guide pipe, an empty groove and a rotating block, the guide pipe is installed on the inner wall of the box body and communicated with the inside of the box body, the rotating block is fixedly connected to the other end of the long rod and rotatably connected to the inside of the box body, the empty groove is formed in the bottom end of the rotating block, and the bottom end of the box body is communicated with the empty groove.
Preferably, in order to make the concrete better fall into the rotating block, the connecting rod is of an L-shaped structure, the cross section of the end of the sliding rod is of an inverted triangular structure, and the top end of the rotating block is of a quadrangular frustum pyramid structure.
Preferably, in order to facilitate better sliding of the sliding rod, the sliding mechanism further comprises two guide wheels, the two guide wheels are symmetrically and rotatably connected to the connecting rod close to the side wall of the sliding rod, and the guide wheels are in rolling connection with the side wall of the sliding rod.
The invention has the beneficial effects that: the dead lever is installed in main body mechanism's inside, the guiding axle is installed in the inner wall of dead lever and is rotated and connect in the installation piece, the lateral wall of installation piece is cyclic annular equidistance and installs a plurality of flabellum, the one end of bracing piece is rotated and is connected in installation piece and the other end and slide bar rotation, the bottom in the dead lever is installed to the connecting rod, the slide bar slides in the inner wall of connecting rod, contradict the flabellum when main body mechanism is inside to the concrete, make the flabellum drive installation piece rotate, and then make the bracing piece rotate the inner wall of drive slide bar at the connecting rod and make a round trip to slide, and then make the tip of slide bar smash the concrete that falls into main body mechanism inside and lead to, thereby the condition.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view showing a connection structure of the main body mechanism and the slide mechanism shown in fig. 1;
FIG. 3 is an enlarged view of the part A shown in FIG. 2;
fig. 4 is a schematic view of a connection structure of the rotating mechanism shown in fig. 2.
In the figure: 1. the device comprises a main body mechanism, 11, a feeding port, 12, a box body, 13, a fixing plate, 2, a rotating mechanism, 21, a torsion spring, 22, a long rod, 23, a clamping block, 3, a flow guide mechanism, 31, a guide pipe, 32, a hollow groove, 33, a rotating block, 4, a sliding mechanism, 41, a fixing rod, 42, an installation block, 43, fan blades, 44, a guide shaft, 45, a connecting rod, 46, a sliding rod, 47, a supporting rod, 48 and a guide wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a fiber concrete production apparatus includes a main body mechanism 1, a sliding mechanism 4 is installed inside the main body mechanism 1, the sliding mechanism 4 includes a fixing rod 41, an installation block 42, fan blades 43, a guide shaft 44, a connecting rod 45, a sliding rod 46 and a supporting rod 47, the fixing rod 41 is fixedly installed on the inner wall of the main body mechanism 1, the guide shaft 44 is installed on the side wall of the fixing rod 41 and rotatably connected to the installation block 42, the installation block 42 is rotatably connected inside the main body mechanism 1, a plurality of fan blades 43 are fixedly connected to the side wall of the installation block 42 in an annular equidistant manner, one end of the supporting rod 47 is rotatably connected to the side wall of the installation block 42 and the other end is rotatably connected to the sliding rod 46, the sliding rod 46 is slidably connected to the inner wall of the connecting rod 45, the connecting rod 45 is fixedly installed at the bottom end of the fixing, the lateral wall of main part mechanism 1 is connected with slewing mechanism 2, the inside of main part mechanism 1 is equipped with water conservancy diversion mechanism 3.
As a technical optimization scheme of the present invention, the main body mechanism 1 includes a feeding port 11 and a box body 12, the feeding port 11 is disposed at the top end of the box body 12, and the mounting block 42 is rotatably connected inside the box body 12.
As a technical optimization scheme of the present invention, the main body mechanism 1 further includes a fixing plate 13, the fixing plate 13 is fixedly connected to the bottom end of the box body 12 and is communicated with the inside of the box body 12, and four screw holes are symmetrically installed on the inner wall of the fixing plate 13 in a group of two screw holes.
As a technical optimization scheme of the present invention, the rotating mechanism 2 includes a torsion spring 21, a long rod 22 and a fixture block 23, one end of the torsion spring 21 is fixedly connected to a side wall of the box body 12, the other end of the torsion spring is fixedly mounted on a side wall of the fixture block 23, the fixture block 23 is rotatably connected to a side wall of the box body 12, and one end of the long rod 22 penetrates through and is fixedly connected to an inner wall of the fixture block 23.
As a technical optimization scheme of the present invention, the flow guiding mechanism 3 includes a guide pipe 31, an empty slot 32 and a rotating block 33, the guide pipe 31 is installed on the inner wall of the box body 12 and is communicated with the inside of the box body 12, the rotating block 33 is fixedly connected to the other end of the long rod 22 and is rotatably connected to the inside of the box body 12, the empty slot 32 is arranged at the bottom end of the rotating block 33, and the bottom end of the box body 12 is communicated with the empty slot 32.
As a technical optimization scheme of the present invention, the connecting rod 45 is an L-shaped structure, the cross section of the end of the sliding rod 46 is an inverted triangle structure, and the top end of the rotating block 33 is a quadrangular frustum pyramid structure.
As a technical optimization scheme of the present invention, the sliding mechanism 4 further includes two guide wheels 48, the two guide wheels 48 are symmetrically and rotatably connected to the side wall of the connecting rod 45 close to the sliding rod 46, and the guide wheels 48 are connected to the side wall of the sliding rod 46 in a rolling manner.
When the invention is used, firstly, an operator uses a tool to install the fixed plate 13 installed at the bottom end of the box body 12 at the top end of the production device when using the production device, then the operator pours concrete into the box body 12 from the feeding port 11 arranged at the top end of the box body 12, the concrete drives the fan blades 43 inside the box body 12 to rotate when falling (when the pouring position is not at the side edge, the fan blades 43 can be rotated by rotating the guide shaft 44 artificially), the fixed rod 41 is installed at the inner wall of the box body 12, the guide shaft 44 is arranged at the end part of the fixed rod 41 and is rotatably connected with the installation block 42, the side wall of the installation block 42 is annularly provided with a plurality of fan blades 43 at equal intervals, one end of the support rod 47 is rotatably connected with the installation block 42 and the other end is rotatably connected with the slide rod 46, the connecting rod 45 is in an L-shaped structure and is fixedly connected, the two guide wheels 48 are symmetrically and rotatably connected to the inner wall of the connecting rod 45 and are connected to the side wall of the sliding rod 46 in a rolling manner, the fan blades 43 drive the mounting block 42 to rotate when rotating, so that the supporting rod 47 rotates to drive the sliding rod 46 to rotate, the connecting rod 45 limits the sliding rod 46, so that the sliding rod 46 can only slide back and forth on the inner wall of the connecting rod 45, the sliding rod 46 can smash and open the concrete in the box body 12 when the feeding device is blocked, and the use efficiency of the production device is improved; the side wall of the box body 12 is rotatably connected with a clamping block 23, the other end of the clamping block 23 is rotatably connected with the side wall of the box body 12, one end of the torsion spring 21 is fixedly connected with the side wall of the box body 12 and the other end is fixedly connected with the clamping block 23, one end of a connecting rod 45 penetrates through and is fixedly connected with the clamping block 23, the other end of the connecting rod 45 is fixedly connected with a rotating block 33, a transmission block 33 is a part of a cylinder with a hollow inner part, so that no gap exists between the rotating block 33 and the box body 12, the materials are prevented from entering between the rotating block 33 and the box body 12, the rotating block 33 rotates in the box body 12, a hollow groove 32 is formed in the bottom end, close to the box body 12, a guide pipe 31 is fixed on the side wall of the box body 12 and communicated with the inner part of the box body 12, when the concrete amount required by production equipment, then when the long rod 22 is driven by the fixture block 23 to rotate, the rotating block 33 rotates to enable the empty slot 32 formed in the inner wall of the rotating block 33 to be communicated with the guide pipe 31, so that the redundant concrete in the rotating block 33 is discharged out of the box body 12 through the guide pipe 31, the trouble of cleaning by an operator is prevented, the resource waste is reduced, and the use efficiency of the production device is further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A fiber concrete apparatus for producing, includes main body mechanism (1), its characterized in that: the internally mounted of main part mechanism (1) has slide mechanism (4), slide mechanism (4) include dead lever (41), installation piece (42), flabellum (43), guiding axle (44), connecting rod (45), slide bar (46) and bracing piece (47), dead lever (41) fixed mounting in the inner wall of main part mechanism (1), guiding axle (44) install in the lateral wall of dead lever (41) and rotate connect in installation piece (42), installation piece (42) rotate connect in the inside of main part mechanism (1), a plurality of flabellum (43) are cyclic annular equidistance fixed connection in the lateral wall of installation piece (42), the one end of bracing piece (47) rotate connect in the lateral wall of installation piece (42) and the other end rotate connect in slide bar (46), slide bar (46) sliding connection in the inner wall of connecting rod (45), the connecting rod (45) is fixedly installed at the bottom end of the fixing rod (41), the side wall of the main body mechanism (1) is connected with the rotating mechanism (2), and the flow guide mechanism (3) is arranged inside the main body mechanism (1).
2. A fiber concrete producing apparatus according to claim 1, wherein: main part mechanism (1) includes material loading mouth (11) and box (12), the top of box (12) is equipped with material loading mouth (11), installation piece (42) rotate connect in the inside of box (12).
3. A fiber concrete producing apparatus according to claim 2, wherein: the main body mechanism (1) further comprises a fixing plate (13), the fixing plate (13) is fixedly connected to the bottom end of the box body (12) and communicated with the interior of the box body (12), and four screw holes are symmetrically arranged on the inner wall of the fixing plate (13) in a pairwise mode.
4. A fiber concrete producing apparatus according to claim 2, wherein: slewing mechanism (2) include torsion spring (21), stock (22) and fixture block (23), the one end fixed connection of torsion spring (21) in the lateral wall and the other end fixed mounting of box (12) in the lateral wall of fixture block (23), fixture block (23) rotate connect in the lateral wall of box (12), the one end of stock (22) runs through and fixed connection in the inner wall of fixture block (23).
5. A fibre concrete production apparatus according to claim 4, wherein: water conservancy diversion mechanism (3) include pipe (31), dead slot (32) and turning block (33), pipe (31) install in the inner wall of box (12) and communicate in the inside of box (12), turning block (33) fixed connection in the other end of stock (22) rotates connect in the inside of box (12), the bottom of turning block (33) is equipped with dead slot (32), just the bottom of box (12) with dead slot (32) intercommunication.
6. A fibre concrete production apparatus according to claim 5, wherein: the connecting rod (45) is of an L-shaped structure, the section of the end part of the sliding rod (46) is of an inverted triangular structure, and the top end of the rotating block (33) is of a quadrangular frustum pyramid structure.
7. A fiber concrete producing apparatus according to claim 1, wherein: slide mechanism (4) still include leading wheel (48), leading wheel (48) are equipped with two, two leading wheel (48) symmetry rotation connect in connecting rod (45) are close to the lateral wall of slide bar (46), just leading wheel (48) roll connection in the lateral wall of slide bar (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010642374.9A CN111716543B (en) | 2020-07-06 | 2020-07-06 | Fiber concrete apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010642374.9A CN111716543B (en) | 2020-07-06 | 2020-07-06 | Fiber concrete apparatus for producing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111716543A true CN111716543A (en) | 2020-09-29 |
| CN111716543B CN111716543B (en) | 2021-09-07 |
Family
ID=72572244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010642374.9A Active CN111716543B (en) | 2020-07-06 | 2020-07-06 | Fiber concrete apparatus for producing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111716543B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939576A (en) * | 2022-05-26 | 2022-08-26 | 安徽高科电子股份有限公司 | Corrosion-resistant blockage clearing device, automatic unmanned blockage clearing operation system and use method of automatic unmanned blockage clearing operation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0846534A1 (en) * | 1996-12-04 | 1998-06-10 | Partek Concrete Development Oy Ab | Method and apparatus for casting concrete products |
| JP2000289020A (en) * | 1999-04-08 | 2000-10-17 | Fuji Forest Kk | Short fiber-shaped material pumping device and construction method for slope face using short fiber- shaped material pumping device |
| KR20110068102A (en) * | 2009-12-15 | 2011-06-22 | (주)청조엔지니어링 | Fixed quantity supply device of textile reinforcement |
| CN107662286A (en) * | 2017-08-30 | 2018-02-06 | 胡叙成 | A kind of bridge construction concrete central mix plant |
| CN207825212U (en) * | 2018-01-16 | 2018-09-07 | 成都建工赛利混凝土有限公司 | A kind of concrete fiber feeding device |
| CN109591176A (en) * | 2018-11-20 | 2019-04-09 | 刘梦辉 | A kind of steel fibre charging device suitable for fresh concrete |
| CN110614722A (en) * | 2019-10-09 | 2019-12-27 | 温州大学瓯江学院 | Mixing equipment for laboratory micro steel fiber concrete |
| CN209920226U (en) * | 2018-10-23 | 2020-01-10 | 郑州康晓科技有限公司 | Concrete material loading recovery unit |
| CN212045529U (en) * | 2020-04-14 | 2020-12-01 | 山东中鲁管业有限公司 | Loading attachment is used in PE pipe production |
-
2020
- 2020-07-06 CN CN202010642374.9A patent/CN111716543B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0846534A1 (en) * | 1996-12-04 | 1998-06-10 | Partek Concrete Development Oy Ab | Method and apparatus for casting concrete products |
| JP2000289020A (en) * | 1999-04-08 | 2000-10-17 | Fuji Forest Kk | Short fiber-shaped material pumping device and construction method for slope face using short fiber- shaped material pumping device |
| KR20110068102A (en) * | 2009-12-15 | 2011-06-22 | (주)청조엔지니어링 | Fixed quantity supply device of textile reinforcement |
| CN107662286A (en) * | 2017-08-30 | 2018-02-06 | 胡叙成 | A kind of bridge construction concrete central mix plant |
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| CN209920226U (en) * | 2018-10-23 | 2020-01-10 | 郑州康晓科技有限公司 | Concrete material loading recovery unit |
| CN109591176A (en) * | 2018-11-20 | 2019-04-09 | 刘梦辉 | A kind of steel fibre charging device suitable for fresh concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939576A (en) * | 2022-05-26 | 2022-08-26 | 安徽高科电子股份有限公司 | Corrosion-resistant blockage clearing device, automatic unmanned blockage clearing operation system and use method of automatic unmanned blockage clearing operation system |
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| Publication number | Publication date |
|---|---|
| CN111716543B (en) | 2021-09-07 |
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Inventor after: Peng Fugang Inventor after: Zhang Ping Inventor after: Chen Xiaodong Inventor after: Cui Dongsheng Inventor before: Chen Xiaodong Inventor before: Cui Dongsheng |
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Effective date of registration: 20210820 Address after: 102600 Xihongmen Town, Daxing District, Beijing Applicant after: China Railway 18th Bureau Group Beijing Engineering Co.,Ltd. Address before: Dinglu construction R & D department, 8 / F, ideal building 2, No. 15612, Century Avenue, hi tech Zone, Jinan City, Shandong Province Applicant before: Shandong Dinglu Construction Co.,Ltd. |
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