CN110370455A - A kind of road construction device of noise-reducing and dustproof - Google Patents
A kind of road construction device of noise-reducing and dustproof Download PDFInfo
- Publication number
- CN110370455A CN110370455A CN201910617976.6A CN201910617976A CN110370455A CN 110370455 A CN110370455 A CN 110370455A CN 201910617976 A CN201910617976 A CN 201910617976A CN 110370455 A CN110370455 A CN 110370455A
- Authority
- CN
- China
- Prior art keywords
- agitator tank
- noise
- outer housing
- road construction
- construction device
- 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.)
- Pending
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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
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
-
- 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
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
- B28C5/0856—Supporting frames or structures, e.g. supporting wheels
-
- 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
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/025—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials for preparing hydraulic-cement-bound mixtures of which at least one ingredient has previously been deposited on the surface, e.g. in situ mixing of concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to road construction equipment fields, specifically disclose a kind of road construction device of noise-reducing and dustproof, including outer housing, agitator tank, elastic supporting member for supporting optical member and the noise reduction layer being arranged on the outer housing inner wall, the agitator tank level sliding is set in outer housing, and the elastic supporting member for supporting optical member for playing shock-absorbing support to the agitator tank is fixedly installed on the side plate of the outer housing.The present invention can be effectively reduced the vibrating noise generated when agitator tank inner concrete material is stirred by the elastic supporting member for supporting optical member and noise reduction layer of setting, and since agitator tank is arranged in outer housing, can play effective dust-proof effect；In addition, the sponge ball being arranged in elastic supporting member for supporting optical member, support spring can be absorbed by the noise generated in compression process, further ensure the noise reduction effect of the road construction device.
Description
Technical field
The present invention relates to road construction equipment field, the road construction device of specifically a kind of noise-reducing and dustproof.
Background technique
Road is divided into from the infrastructure that the meaning of a word is exactly for various trackless vehicles and walk by its handling characteristics
Highways and streets, backroad, factories and mines road, forestry road, examination road, contest road, automobile test road, workshop
Channel and school's road etc., there are also post roads for ancient china.In addition also refer to the approach for reaching certain target, things development, variation
Approach.
With social development, the development of transport development it is rapid, more and more road constructions bring huge to city
Pressure, dust pollution and noise pollution caused by the working drawing review including urban road, this leverages people's lives
Quality, while construction worker also works under poor environment for a long time, influences very much physically and mentally healthy.
Wherein, during road construction, the use of concrete is essential, but stirs in the manufacturing process of concrete
The sound mixed is big, while cement will cause a large amount of fugitive dusts and fly out directly pouring into whisking machines, and not only wasting raw material can also shadow
Ring the health of builder.
Summary of the invention
The purpose of the present invention is to provide a kind of road construction devices of noise-reducing and dustproof, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of road construction device of noise-reducing and dustproof, including outer housing, agitator tank, elastic supporting member for supporting optical member and setting are in the shell
Noise reduction layer on internal wall, the agitator tank level sliding is set in outer housing, and is fixedly mounted on the side plate of the outer housing
There is the elastic supporting member for supporting optical member for playing shock-absorbing support to the agitator tank；
The elastic supporting member for supporting optical member includes that the support tube being fixedly mounted on outer housing side plate, sliding are set in the support tube
It two sliding blocks and the first sliding block and is placed in the support tube and the support bullet between second sliding block and the first sliding block
Spring is also filled with several sponge balls in the support spring；
Mode is connected through a screw thread on the side plate of the support tube, screw rod is installed, be placed in the screw rod end in the support tube
It is rotatably connected on the first sliding block；Sliding is placed in the support tube through compression bar is equipped on another side plate of the support tube
Compression bar end be fixedly connected with second sliding block, the compression bar end being placed in outside the support tube is fixedly installed with clamping plate, and
The clamping plate reassembling type is fixedly mounted on the outer wall of the agitator tank；
The noise reduction layer includes honeycombed interlayer and the sound-absorbing protrusion that honeycombed sandwiching surface is arranged in, sound-absorbing protrusion
Inside is also provided with spherical hollow space open at one end.
As a further solution of the present invention: the screw rod end being placed in outside the support tube is fixedly installed with regulation handle.
As a further solution of the present invention: the top of the outer housing is symmetrical arranged there are two the funnel that feeds intake, and two are thrown
The bottom end of funnel is connected with the inner cavity top of the agitator tank respectively by two blanking hoses, and the leakage that feeds intake described in each
The bottom end of bucket is provided with baiting valve.
As a further solution of the present invention: guide-track groove, the agitator tank are provided on the inner cavity bottom plate of the outer housing
Bottom end be fixedly installed with the guide runner being slidably matched with the guide-track groove so that when agitator tank moves in outer housing
It keeps stablizing.
As a further solution of the present invention: the bottom of the agitator tank is additionally provided with drainage conduit, is equipped in drainage conduit
Blow-off valve；Channel is offered on the bottom plate of the outer housing, the drainage conduit is set in the channel through sliding, and described logical
Rubber protective cover is also connected between the bottom in road and the outer wall of the drainage conduit.
As a further solution of the present invention: blender is provided in the agitator tank, the rabbling mechanism includes along institute
State the stirring shaft of central axes rotation setting in agitator tank, the propeller for being mounted on the stirring shaft lower part and fixation
The auxiliary mixing component being mounted on the stirring shaft.
As a further solution of the present invention: the top of the agitator tank is also equipped with for driving the stirring shaft to turn
Dynamic stirring motor, and the motor shield being located at outside stirring motor is also equipped with above the top plate of the agitator tank.
As a further solution of the present invention: the auxiliary mixing component includes being fixedly mounted on the stirring shaft
Support rail, the vertical supporting rod for being fixedly mounted on support rail end lower surface and equidistantly it is fixedly mounted on the branch
Support several stirring rods on vertical bar.
As a further solution of the present invention: the stirring shaft is parallel to each other with the vertical supporting rod.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can be effectively reduced agitator tank inner concrete material and be stirred by the elastic supporting member for supporting optical member and noise reduction layer of setting
When the vibrating noise that generates can play effective dust-proof effect and since agitator tank is arranged in outer housing；Wherein, at this
In the noise reduction layer of invention, after noise enters in spherical hollow space, by multi-faceted reflection, reach noise reduction purpose, honeycombed interlayer is matched
The noise in air-flow can adequately be adsorbed by closing spherical hollow space, to achieve the purpose that noise reduction sound-absorbing；And the elasticity being arranged
Supporting element can play resilient support effect to agitator tank, and good buffer function is played in the vibration generated to agitator tank, to reach
The purpose of vibrating noise is reduced, in addition, the sponge ball being arranged in elastic supporting member for supporting optical member, it can be to support spring by compression process
The noise of generation is absorbed, and the noise reduction effect of the road construction device is further ensured.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment.
Fig. 1 is the structural schematic diagram of the road construction device of noise-reducing and dustproof of the present invention.
Fig. 2 is the structural schematic diagram of elastic supporting member for supporting optical member in the road construction device of noise-reducing and dustproof of the present invention.
Fig. 3 is the enlarged structure schematic diagram of part A in Fig. 1.
Fig. 4 is the enlarged structure schematic diagram of noise reduction layer in the road construction device of noise-reducing and dustproof of the present invention.
In figure: 1- outer housing, 2- feed intake funnel, 3- agitator tank, 4- elastic supporting member for supporting optical member, 5- baiting valve, 6- blanking hose, 7-
Noise reduction layer, 8- stirring motor, 9- stirring shaft, 10- propeller, 11- vertical supporting rod, 12- stirring rod, 13- support rail,
14- guide-track groove, 15- guide runner, 16- drainage conduit, 17- blow-off valve, 18- rubber protective cover, 19- motor shield, 41- support
Cylinder, 42- clamping plate, 43- compression bar, the second sliding block of 44-, the first sliding block of 45-, 46- sponge ball, 47- regulation handle, 48- screw rod, 49-
Support spring, 71- sound-absorbing protrusion, 72- spherical hollow space, 73- honeycombed interlayer.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
As shown in Figure 1, in one embodiment provided by the invention, a kind of road construction device of noise-reducing and dustproof, including it is outer
Shell 1, agitator tank 3, elastic supporting member for supporting optical member 4 and the noise reduction layer 7 being arranged on 1 inner wall of outer housing, the agitator tank 3 are horizontal
Sliding is set in outer housing 1, and is fixedly installed on the side plate of the outer housing 1 and is played shock-absorbing support to the agitator tank 3
Elastic supporting member for supporting optical member 43 inner concrete material of agitator tank can be effectively reduced by the elastic supporting member for supporting optical member 4 and noise reduction layer 7 of setting
The vibrating noise generated when being stirred, and since agitator tank 3 is arranged in outer housing 1, effective dust-proof effect can be played.
Further, in embodiments of the present invention, the top of the outer housing 1 is symmetrical arranged there are two feeding intake funnel 2, and two
The bottom end of a funnel 2 that feeds intake is connected with the inner cavity top of the agitator tank 3 respectively by two blanking hoses 6, and each institute
The bottom end for stating the funnel 2 that feeds intake is provided with baiting valve 5, and after opening baiting valve 5, the material to feed intake in funnel 2 passes through blanking hose 6
It is added in agitator tank 3.
In the present embodiment, guide-track groove 14, the bottom end of the agitator tank 3 are provided on the inner cavity bottom plate of the outer housing 1
It is fixedly installed with the guide runner 15 being slidably matched with the guide-track groove 14, so that when agitator tank 3 moves in outer housing 1
It keeps stablizing.
Further, in embodiment provided by the invention, the bottom of the agitator tank 3 is additionally provided with drainage conduit 16, row
Blow-off valve 17 is installed, after opening blow-off valve 17, the concrete materials in agitator tank 3 are discharged by drainage conduit 16 in expects pipe 16；
Further, channel is offered on the bottom plate of the outer housing 1, the drainage conduit 16 is set in the channel through sliding,
And rubber protective cover 18 is also connected between the bottom in the channel and the outer wall of the drainage conduit 16.
As shown in Fig. 2, the elastic supporting member for supporting optical member 4 includes fixed peace in the concrete scheme of embodiment provided by the present invention
Support tube 41 on 1 side plate of outer housing, sliding be set to the second sliding block 44 in the support tube 41 and the first sliding block 45 with
And it is placed in the support tube 41 and the support spring 49 between second sliding block 44 and the first sliding block 45, wherein institute
It states and is also filled with several sponge balls 46 in support spring 49；Mode is connected through a screw thread on the side plate of the support tube 41 to install
There is screw rod 48,48 end of screw rod being placed in the support tube 41 is rotatably connected on the first sliding block 45, and is placed in the support
48 end of screw rod outside cylinder 41 is fixedly installed with regulation handle 47；Sliding is through equipped with pressure on another side plate of the support tube 41
Bar 43,43 end of compression bar being placed in the support tube 41 are fixedly connected with second sliding block 44, are placed in the support tube 41
Outer 43 end of compression bar is fixedly installed with clamping plate 42, and 42 reassembling type of the clamping plate is fixedly mounted on the outer wall of the agitator tank 3
On.
Further, as shown in Figure 3 and Figure 4, in the concrete scheme of embodiment provided by the present invention, the noise reduction layer 7
Including honeycombed interlayer 73 and the sound-absorbing protrusion 71 on 73 surface of honeycombed interlayer is set, the inside of the sound-absorbing protrusion 71 is also
It offers spherical hollow space 72 open at one end and, by multi-faceted reflection, reaches noise reduction mesh after noise enters in spherical hollow space 72
, the honeycombed interlayer 73 cooperates spherical hollow space 72 that can adequately be adsorbed to the noise in air-flow, to reach noise reduction
The purpose of sound-absorbing improves the noise reduction effect of the road construction device.
In another embodiment provided by the invention, it is provided with rabbling mechanism in the agitator tank 3, rabbling mechanism is used for
Mixing is stirred to the concrete materials in agitator tank 3；Specifically, the rabbling mechanism include along the agitator tank 3 in
The stirring shaft 9 of axis rotation setting is mounted on the propeller 10 of 9 lower part of stirring shaft and is fixedly mounted on institute
State the auxiliary mixing component on stirring shaft 9.
Further, in embodiments of the present invention, the top of the agitator tank 3 is also equipped with for driving the stirring to turn
The stirring motor 8 that axis 9 rotates, and the motor for preventing being located at outside stirring motor 8 is also equipped with above the top plate of the agitator tank 3
Shield 19.
Further, in the present embodiment, the auxiliary mixing component includes being fixedly mounted on the stirring shaft 9
It support rail 13, the vertical supporting rod 11 for being fixedly mounted on the 13 end lower surface of support rail and is equidistantly fixedly mounted on
Several stirring rods 12 on the vertical supporting rod 11, wherein the stirring shaft 9 is parallel to each other with the vertical supporting rod 11.
The electric elements occurred in this article are electrically connected with extraneous main controller and 220V alternating current, and main controller can be meter
Calculation machine etc. plays the conventionally known equipment of control.
In the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of road construction device of noise-reducing and dustproof, which is characterized in that including outer housing (1), agitator tank (3), resilient support
Part (4) and the noise reduction layer (7) being arranged on the outer housing (1) inner wall, the horizontal sliding of the agitator tank (3) are set to outer housing
(1) in, and the elasticity branch for playing shock-absorbing support to the agitator tank (3) is fixedly installed on the side plate of the outer housing (1)
Support member (4)；
The elastic supporting member for supporting optical member (4) includes the support tube (41) being fixedly mounted on outer housing (1) side plate, sliding set on the branch
It supports the second sliding block (44) and the first sliding block (45) in cylinder (41) and is placed in the support tube (41) and is located at described second
Support spring (49) between sliding block (44) and the first sliding block (45), the support spring (49) is interior to be also filled with several sponge balls
(46)；
Mode is connected through a screw thread on the side plate of the support tube (41), screw rod (48) are installed, be placed in the support tube (41)
Interior screw rod (48) end is rotatably connected on the first sliding block (45)；Sliding runs through and sets on another side plate of the support tube (41)
There are compression bar (43), compression bar (43) end being placed in the support tube (41) is fixedly connected with second sliding block (44), is placed in
Compression bar (43) end of the support tube (41) outside is fixedly installed with clamping plate (42), and the clamping plate (42) reassembling type is fixedly mounted
On the outer wall of the agitator tank (3)；
The noise reduction layer (7) includes the sound-absorbing protrusion of honeycombed interlayer (73) and setting on honeycombed interlayer (73) surface
(71), the inside of the sound-absorbing raised (71) is also provided with spherical hollow space open at one end (72).
2. the road construction device of noise-reducing and dustproof according to claim 1, which is characterized in that be placed in the support tube (41)
Outer screw rod (48) end is fixedly installed with regulation handle (47).
3. the road construction device of noise-reducing and dustproof according to claim 2, which is characterized in that the top of the outer housing (1)
Portion is symmetrical arranged there are two feeding intake funnel (2), the bottom ends of two funnels that feed intake (2) by two blanking hoses (6) respectively with institute
The inner cavity top for stating agitator tank (3) is connected, and the bottom end for the funnel (2) that feeds intake described in each is provided with baiting valve (5).
4. the road construction device of noise-reducing and dustproof according to claim 2, which is characterized in that the outer housing (1) it is interior
It is provided on the plate of bottom of chamber guide-track groove (14), the bottom end of the agitator tank (3) is fixedly installed with matches with the guide-track groove (14) sliding
The guide runner (15) of conjunction.
5. the road construction device of noise-reducing and dustproof according to any one of claims 1 to 4, which is characterized in that the agitator tank
(3) bottom is additionally provided with drainage conduit (16), and blow-off valve (17) are equipped in drainage conduit (16)；The bottom plate of the outer housing (1)
On offer channel, the drainage conduit (16) is set in the channel through sliding, and the bottom in the channel and the discharge
It manages and is also connected with rubber protective cover (18) between the outer wall of (16).
6. the road construction device of noise-reducing and dustproof according to any one of claims 1 to 4, which is characterized in that the agitator tank
(3) blender is provided in, the rabbling mechanism includes the stirring shaft along the interior central axes rotation setting of the agitator tank (3)
(9), it is mounted on the propeller (10) of the stirring shaft (9) lower part and is fixedly mounted on the stirring shaft (9)
Auxiliary mixing component.
7. the road construction device of noise-reducing and dustproof according to claim 6, which is characterized in that the top of the agitator tank (3)
End is also equipped with the stirring motor (8) for driving the stirring shaft (9) to rotate, and above the top plate of the agitator tank (3)
It is also equipped with and is located at the external motor shield (19) of stirring motor (8).
8. the road construction device of noise-reducing and dustproof according to claim 6, which is characterized in that the auxiliary mixing component packet
It includes the support rail (13) being fixedly mounted on the stirring shaft (9), be fixedly mounted under the support rail (13) end
The vertical supporting rod (11) on surface and several stirring rods (12) being equidistantly fixedly mounted on the vertical supporting rod (11).
9. the road construction device of noise-reducing and dustproof according to claim 8, which is characterized in that the stirring shaft (9) with
The vertical supporting rod (11) is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617976.6A CN110370455A (en) | 2019-07-10 | 2019-07-10 | A kind of road construction device of noise-reducing and dustproof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617976.6A CN110370455A (en) | 2019-07-10 | 2019-07-10 | A kind of road construction device of noise-reducing and dustproof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110370455A true CN110370455A (en) | 2019-10-25 |
Family
ID=68250827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617976.6A Pending CN110370455A (en) | 2019-07-10 | 2019-07-10 | A kind of road construction device of noise-reducing and dustproof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110370455A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331733A (en) * | 2020-04-30 | 2020-06-26 | 金陵科技学院 | Damping device of mixer for building engineering |
| CN111791362A (en) * | 2020-06-08 | 2020-10-20 | 金沙县远大新型环保建材有限责任公司 | Efficient stirring equipment and stirring method for concrete product production |
| CN111805740A (en) * | 2020-07-21 | 2020-10-23 | 虹海科技股份有限公司 | Solid waste curbstone and preparation equipment thereof |
| CN117944176A (en) * | 2024-03-25 | 2024-04-30 | 福建信达机械有限公司 | Concrete stirring equipment |
| CN117944176B (en) * | 2024-03-25 | 2024-06-07 | 福建信达机械有限公司 | Concrete stirring equipment |
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| CN109262836A (en) * | 2018-10-17 | 2019-01-25 | 徐州中国矿大岩土工程新技术发展有限公司 | A kind of environment-friendly type grouting serous fluid agitating device and its application method |
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| WO2015118106A1 (en) * | 2014-02-10 | 2015-08-13 | Alireza Rahimi | Vibration device, in particular for petri dishes |
| CN208553872U (en) * | 2018-03-27 | 2019-03-01 | 东莞市骏奎塑料科技有限公司 | A kind of batch mixer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111331733A (en) * | 2020-04-30 | 2020-06-26 | 金陵科技学院 | Damping device of mixer for building engineering |
| CN111791362A (en) * | 2020-06-08 | 2020-10-20 | 金沙县远大新型环保建材有限责任公司 | Efficient stirring equipment and stirring method for concrete product production |
| CN111805740A (en) * | 2020-07-21 | 2020-10-23 | 虹海科技股份有限公司 | Solid waste curbstone and preparation equipment thereof |
| CN117944176A (en) * | 2024-03-25 | 2024-04-30 | 福建信达机械有限公司 | Concrete stirring equipment |
| CN117944176B (en) * | 2024-03-25 | 2024-06-07 | 福建信达机械有限公司 | Concrete stirring equipment |
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Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |