CN202450531U - Integrated grouting machine with stirring screw rod - Google Patents
Integrated grouting machine with stirring screw rod Download PDFInfo
- Publication number
- CN202450531U CN202450531U CN2012200360802U CN201220036080U CN202450531U CN 202450531 U CN202450531 U CN 202450531U CN 2012200360802 U CN2012200360802 U CN 2012200360802U CN 201220036080 U CN201220036080 U CN 201220036080U CN 202450531 U CN202450531 U CN 202450531U
- Authority
- CN
- China
- Prior art keywords
- screw
- stirring
- pump
- hopper
- shaft
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an integrated grouting machine with a stirring screw rod, which solves the problems that the conventional stirring and grouting system has the disadvantages of large occupied area, inconvenience in maintenance, low equipment cost, low construction efficiency and the like. The integrated grouting machine comprises a bottom rack (1), a single-screw rod pump system arranged on the bottom rack (1), a single-screw rod pump main body which is arranged at the end part of the single-screw rod pump system and is communicated with the single-screw rod pump system, a discharging mechanism (2) which is tightly connected and communicated with the single-screw rod pump main body, and a vertical stirring system which is fixed on the bottom rack (1) and is communicated with the single-screw rod pump system. The single-screw rod pump system is located below the vertical stirring system. The integrated grouting machine provided by the utility model has the advantages of compact structure, simplicity in operation, low cost, convenience in maintenance, and blending uniformity. Therefore, the integrated grouting machine is suitable for popularization and application.
Description
Technical field
The utility model relates to a kind of provisions for grouting, specifically, is band agitating screw formula grouting all-in-one.
Background technology
The anchor pole grouting of the side slope in building trade such as highway, railway, urban track traffic, power station, rock-reinforcing, Jing Kuang, tunnel, dam, consolidation grouting, backfill grouting and slip casing by pressure engineering; And engineerings such as construction are protected in the spray of the foundation ditch of urban architecture, interior exterior wall; Need to accomplish mixing, stirring, conveying and the grouting process flow process of cement paste and cement mortar, the equipment that needs then comprises cement plaster blender and grout pump.Screw pump with its pulp continuously evenly, pressure stability and the characteristics such as thick slurry that are specially adapted to high concentration are well suited for above-mentioned grouting requirement.So selection has the mix performance of good cement mortar and the equipment of conveying in time, the requirement of satisfied construction perfusion slurry that guarantees is very important.
At present; What the construction equipment application was maximum is to adopt independent horizontal or vertical mixer to produce cement paste or cement mortar; Arrive grout pump through line transportation again, this mode receives the place that restriction is installed, has increased middle conveying process, equipment cost, the convenience that influences construction and efficiency of construction.Existing stirring carries the horizontal alr mode of the many employings of combined integrated equipment to add single screw rod transmission mode, and its major defect is; Stir bucket capacity and cause floor space big greatly, the material loading height is higher and be unfavorable for operation, and the bearing arrangement of rotating shaft is because be immersed in the abominable cement mortar of environment, and the shaft end seal leakage problem that causes its lack of lubrication and serious wear to cause.At present, be usually used in the screw pump of cement mortar, and be used for other screw pump structure basically identical like industries such as chemical industry, food; Its combining structure is complicated; Need dismantle a lot of screws when safeguarding and connect, to being used to carry the purposes of special media such as cement mortar, mortar is very big to the wearing and tearing of member; Mortar is easy to solidify, and also exists not enough on the convenience for washing property of the property easy to maintenance of screw pump structure replacing consumable accessory and equipment.
The utility model content
The purpose of the utility model is to provide a kind of simple to operate, band agitating screw formula grouting all-in-one that batch mixing is even, easy to maintenance.
To achieve these goals, the scheme of the utility model employing is following:
Band agitating screw formula grouting all-in-one; Comprise underframe; Be arranged on the single-screw (single screw) pump system on the underframe; The single-screw (single screw) pump main body that is arranged on this single-screw (single screw) pump system end and is communicated with it, be fastenedly connected with this single-screw (single screw) pump main body and the discharging mechanism that is communicated with and be fixed on the underframe and with the vertical stirring system of single-screw (single screw) pump system connectivity; Said single-screw (single screw) pump system is positioned at this vertical stirring system below.
Further; Said vertical stirring system comprises the stirring hopper; Be arranged on this stirring hopper side wall and have the water inlet pipe of metering device; Be arranged on the conduit that stirs middle part in the hopper, be socketed on the shaft in this conduit, be arranged on this shaft and the stirrer paddle that is fastenedly connected with it and is connected and is arranged on the stirring actuating unit at stirring hopper top with the shaft upper end; Said shaft lower end is run through the stirring feed hopper bottom and is extended to its outside.
Further again; Said single-screw (single screw) pump system comprises the screw pump feeding warehouse that is communicated with the bottom of said stirring hopper; Be arranged on the screw feeding bar in the screw pump feeding warehouse, be fixed on screw pump feeding warehouse one end and the transmission case that is connected with this screw feeding bar and be fixed on the screw pump reducing motor on the transmission case; Said screw feeding bar is connected with the single-screw (single screw) pump main body.
Said single-screw (single screw) pump main body is by stator and be positioned at this stator interior and the screw rotor that is connected with said screw feeding bar is formed.
Further, said stirring actuating unit comprises stirring reduction box that is connected with the shaft upper end and the stirring motor that is connected with this stirring reduction box.
Simultaneously, be provided with baiting valve in said stirring feed hopper bottom, this baiting valve one end is connected with the stirring hopper, and the other end is connected with the screw pump feeding warehouse through sealing flange and extend in this screw pump feeding warehouse.
For easy to maintenance, said screw pump feeding warehouse both sides are provided with the cover plate with its flexible connection; The cover plate lower end fixes on the feeding warehouse both sides through hinges fixing, and the cover plate upper end is fixed through eyelet bolt.
In order better to realize the utility model, said stirrer paddle is made up of two blades, and this blade is made up of the closed frame that at least three spacers connect and compose from beginning to end, and in this framework, also is welded with spacer; Said blade is connected on the shaft through bolt.
Simultaneously, be provided with bearing support in said stirring feed hopper bottom, said shaft lower end then is fixed in this bearing support.
For conveniently moving, also be provided with mobile device in said underframe bottom.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model compact conformation, simple to operate not only, and batch mixing is even, easy to maintenance;
(2) the utility model comprises single-screw (single screw) pump system and the vertical stirring system that is attached thereto; Also be provided with the discharging mechanism that is attached thereto in the single-screw (single screw) pump system; To stir, carry the grouting function to be integrated in one; Thereby dwindled occupation area of equipment, reduced the intermediate transportation link, increased efficiency of construction;
(3) mixing plant is vertical stirring system in the utility model; This vertical stirring system comprises the stirring hopper, is arranged on this stirring hopper side wall and has the water inlet pipe of metering device, is arranged on the conduit that stirs middle part in the hopper; Be socketed on the shaft of conduit; The stirrer paddle that is arranged on this shaft and is fastenedly connected with it and is connected with the shaft upper end and is arranged on the stirring actuating unit that stirs the hopper top, thus the material loading height reduced, and handled easily personnel material loading is operated;
(4) the utility model is provided with the cover plate that flexibly connects with it in screw pump feeding warehouse both sides, after equipment quits work, needs to clean screw pump, and screw pump feeding warehouse two side cover plates are put down, and just can thoroughly clean screw pump; And needs change easily worn part as: in the time of screw rod, stator, open cover plate, thereby make things convenient for dismounting and assembling between screw rod and the screw feeding bar;
(5) shaft is socketed in the conduit in the utility model; Its lower end then is fixed in the bearing support that stirs feed hopper bottom; The duct height that stirs in the hopper is higher than the maximum liquid storage face of hopper; Shaft does not directly contact with feed liquid with bearing support in the whipping process, solves horizontal shaft bearing and is fully immersed in the problem that causes shaft end seal to leak in the feed liquid;
(6) the utility model is provided with water inlet pipe on the stirring hopper side wall, and this water inlet pipe has metering device, can measure the inflow that stirs hopper, thereby make operating personnel control inflow accurately according to the water/binder ratio of cement mortar;
(7) the utility model also is provided with mobile device in the underframe bottom, and the equipment that makes moves convenient, quick;
(8) stirrer paddle is made up of two blades in the utility model, and this blade is made up of the closed frame that at least three spacers connect and compose from beginning to end, and in this framework, also is welded with spacer; Said blade is connected on the shaft through bolt, and the contact area that it has strengthened blade and mortar in the whipping process makes mortar in mixed process, fully mix;
(9) the utility model is provided with baiting valve in said stirring feed hopper bottom; This baiting valve one end is connected with the stirring hopper, and the other end is connected with the screw pump feeding warehouse through sealing flange and extend in this screw pump feeding warehouse, after material stirs; Open baiting valve; The screw pump feeding warehouse fuses with stirring hopper, starts the screw pump reducing motor, can carry out the perfusion slurry operation of mass transport.During screw pump work, also can start the stirring system motor, thereby the material that prevents to stir in the hopper is fixed.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model.
Fig. 2 is the structural representation of screw pump feeding warehouse in the utility model.
Wherein, the component name that Reference numeral is corresponding is called: the 1-underframe, and the 2-discharging mechanism, 3-stirs hopper, 4-conduit; The 5-shaft, 6-stirrer paddle, 7-screw pump feeding warehouse, 8-screw feeding bar, 9-transmission case; 10-screw pump reducing motor, the 11-stator, the 12-screw rotor, 13-stirs reduction box, 14-stirring motor; The 15-baiting valve, 16-sealing flange, 17-cover plate, 18-pull bar, 19-water inlet pipe.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is done to specify further, but the embodiment of the utility model is not limited thereto.
Embodiment
Like Fig. 1, shown in 2, band agitating screw formula grouting all-in-one comprises underframe 1, and this underframe 1 is provided with the single-screw (single screw) pump system and is positioned at above this single-screw (single screw) pump system and the vertical stirring system that is attached thereto.
In the present embodiment; Be provided with the single-screw (single screw) pump main body that is communicated with it in said single-screw (single screw) pump system end; This single-screw (single screw) pump main body is made up of stator 11 and the screw rotor 12 that is connected with screw feeding bar 8; Screw pump main body and discharging mechanism 2 are fixed on an end of screw pump feeding warehouse 7 together through pull bar 18, and through nut check.
In the present embodiment; Said vertical stirring system comprises stirring hopper 3; Stirring hopper 3 is cylindrical shape; On these stirring hopper 3 sidewalls, also be provided with the water inlet pipe 19 that has metering device, this water inlet pipe 19 can measure the inflow that stirs hopper, thereby makes operating personnel control inflow accurately according to the water/binder ratio of cement mortar.The middle part is provided with conduit 4 in stirring hopper 3; Conduit 4 is higher than the maximum liquid storage face of hopper; And in this conduit 4, be socketed with shaft 5, on this shaft 5, be provided with the stirrer paddle 6 that is fastenedly connected with it, said stirrer paddle 6 is made up of two blades; This blade is made up of the closed frame that at least three spacers connect and compose from beginning to end, and in this framework, also is welded with spacer; Said blade is connected on the shaft 5 through bolt.This blade has strengthened the contact area of blade and mortar in the whipping process, and mortar is fully mixed in mixed process.Be provided with the stirring actuating unit at stirring hopper 3 tops, this stirring actuating unit comprises stirring reduction box 13 that is connected with shaft 5 upper ends and the stirring motor 14 that is connected with this stirring reduction box 13; Said shaft 5 lower ends are run through stirring hopper 3 bottoms and are extended to its outside.Be provided with bearing support in stirring hopper 3 bottoms; Shaft 5 lower ends then are fixed in this bearing support; Shaft 5 does not directly contact with feed liquid with bearing support in the whipping process, has solved horizontal shaft bearing well because of being fully immersed in the problem that causes shaft end seal to leak in the feed liquid.
Move for ease, also be provided with mobile device in said underframe 1 bottom, this mobile device is generally car wheel structure or rail formula structure, and mobile device is made up of wheel in the present embodiment.
In the present embodiment; Said single-screw (single screw) pump system comprises the screw pump feeding warehouse 7 that is communicated with the bottom of said stirring hopper 3; Be arranged on the screw feeding bar 8 in the screw pump feeding warehouse 7, be fixed on screw pump feeding warehouse 7 one ends and the transmission case 9 that is connected with this screw feeding bar 8 and be fixed on the screw pump reducing motor 10 on the transmission case 9; Said screw feeding bar 8 is connected with the single-screw (single screw) pump main body.Be provided with cover plate 17 with its flexible connection in said screw pump feeding warehouse 7 both sides; Cover plate 17 adds eyelet bolt by hinge and is fixed on screw pump feeding warehouse 7 both sides; Cover plate 17 is worn hermetically-sealed construction with screw pump feeding warehouse 7 both sides; Unclamp eyelet bolt, then cover plate 17 just can downwards and outwards be opened, thereby makes things convenient for the cleaning of screw pump and the assembling between screw rod and the screw feeding bar 8.
In order better to realize being provided with baiting valve 15 in said stirring hopper 3 bottoms by present embodiment, these baiting valve 15 1 ends are connected with stirring hopper 3, and the other end is connected with screw pump feeding warehouse 7 through sealing flange 16 and extend in this screw pump feeding warehouse 7.Usually, for particularity, handled easily and the assurance sealing that adapts to material, adopt the rotary butterfly valve common on the market and the disconnecting link valve of rectilinear motion form.After material stirs, open baiting valve 15, screw pump feeding warehouse 7 fuses with stirring hopper 3, starts screw pump reducing motor 10, can carry out the perfusion mortar operation of mass transport.During screw pump work, also can start stirring motor 14, thereby prevent that the material that stirs in the hopper 3 is fixed.
The course of work of the utility model is following: water is put into through water inlet pipe 19 stirred in the hopper 3, according to the water/binder ratio of cement mortar, confirm to put into the water yield of hopper; Start stirring motor 14, stirring system is started working, and adds cement and sand from the top of stirring hopper 3, and is reinforced while stirring, treat that mortar mixes after, stop stirring motor 14; Open baiting valve 15; Mortar arrives screw pump feeding warehouse 7 through baiting valve 15, starts screw pump reducing motor 10, and the single-screw (single screw) pump system starts working; Mortar connects the position that arrival needs the cement injection mortar through pipeline again through the output from discharging mechanism 2 again of screw pump main body.Behind the end-of-job, clean screw pump if desired, only need the movable joint nut on the cover plate 17 at screw pump feeding warehouse 7 two ends is outwarded winding, put down cover plate 17, just can clean screw pump.
According to the foregoing description, can well realize the utility model.
Claims (10)
1. be with agitating screw formula grouting all-in-one; It is characterized in that: comprise underframe (1); Be arranged on the single-screw (single screw) pump system on the underframe (1); The single-screw (single screw) pump main body that is arranged on this single-screw (single screw) pump system end and is communicated with it, be fastenedly connected with this single-screw (single screw) pump main body and the discharging mechanism (2) that is communicated with and be fixed on that underframe (1) is gone up and with the vertical stirring system of single-screw (single screw) pump system connectivity; Said single-screw (single screw) pump system is positioned at this vertical stirring system below.
2. band agitating screw formula grouting all-in-one according to claim 1; It is characterized in that: said vertical stirring system comprises stirring hopper (3); Be arranged on this stirring hopper (3) sidewall and have the water inlet pipe (19) of metering device; Be arranged on the conduit (4) that stirs the interior middle part of hopper (3); Be socketed on the shaft (5) in this conduit (4), be arranged on this shaft (5) and go up the stirrer paddle (6) that also is fastenedly connected with it and be arranged on the stirring actuating unit that stirs hopper (3) top and be connected with said shaft (5) upper end; Said shaft (5) lower end is run through stirring hopper (3) bottom and is extended to its outside.
3. band agitating screw formula grouting all-in-one according to claim 2; It is characterized in that: said single-screw (single screw) pump system comprises the screw pump feeding warehouse (7) that is communicated with the bottom of said stirring hopper (3); Be arranged on the screw feeding bar (8) in this screw pump feeding warehouse (7), be fixed on screw pump feeding warehouse (7) one ends and the transmission case (9) that is connected with this screw feeding bar (8) and be fixed on the screw pump reducing motor (10) on the transmission case (9); Said screw feeding bar (8) is connected with the single-screw (single screw) pump main body.
4. band agitating screw formula according to claim 3 grouting all-in-one is characterized in that: said single-screw (single screw) pump main body is by stator (11) and be positioned at this stator (11) screw rotor (12) inner and that be connected with said screw feeding bar (8) and form.
5. band agitating screw formula grouting all-in-one according to claim 4, it is characterized in that: said stirring actuating unit comprises stirring reduction box (13) that is connected with shaft (5) upper end and the stirring motor (14) that is connected with this stirring reduction box (13).
6. according to each described band agitating screw formula grouting all-in-one of claim 2～5; It is characterized in that: be provided with baiting valve (15) in said stirring hopper (3) bottom; These baiting valve (15) one ends are connected with stirring hopper (3), and the other end is connected with screw pump feeding warehouse (7) through sealing flange (16) and extend in this screw pump feeding warehouse (7).
7. band agitating screw formula grouting all-in-one according to claim 6, it is characterized in that: said screw pump feeding warehouse (7) both sides are provided with the cover plate (17) with its flexible connection; This cover plate (17) lower end fixes on screw pump feeding warehouse (7) both sides through hinges fixing, and cover plate (17) upper end is fixed through eyelet bolt.
8. band agitating screw formula grouting all-in-one according to claim 7; It is characterized in that: said stirrer paddle (6) is made up of two blades; This blade is made up of the closed frame that at least three spacers connect and compose from beginning to end, and in this framework, also is welded with spacer; Said blade is connected on the shaft (5) through bolt.
9. according to claim 7 or 8 described band agitating screw formula grouting all-in-ones, it is characterized in that: be provided with bearing support in said stirring hopper (3) bottom, said shaft (5) lower end then is fixed in this bearing support.
10. band agitating screw formula grouting all-in-one according to claim 9 is characterized in that: also be provided with mobile device in said underframe (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200360802U CN202450531U (en) | 2012-02-06 | 2012-02-06 | Integrated grouting machine with stirring screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200360802U CN202450531U (en) | 2012-02-06 | 2012-02-06 | Integrated grouting machine with stirring screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202450531U true CN202450531U (en) | 2012-09-26 |
Family
ID=46866402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200360802U Expired - Fee Related CN202450531U (en) | 2012-02-06 | 2012-02-06 | Integrated grouting machine with stirring screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202450531U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260204A (en) * | 2014-09-19 | 2015-01-07 | 中国水电基础局有限公司 | Paste slurry filling integrated machine and implementation method thereof |
| CN104500097A (en) * | 2014-11-21 | 2015-04-08 | 镇江长城注浆设备有限公司 | Vertical stirring and grouting all-in-one machine |
| CN105041641A (en) * | 2015-09-14 | 2015-11-11 | 张荣斌 | Enhanced single-screw pump |
| CN105089272A (en) * | 2015-09-14 | 2015-11-25 | 张荣斌 | Grouter with stirring device and control method of grouter |
| CN105257000A (en) * | 2015-09-14 | 2016-01-20 | 张荣斌 | Grouting machine, and control system and concrete conveying method thereof |
| CN105298131A (en) * | 2015-09-14 | 2016-02-03 | 张荣斌 | Grouter with spray mechanism and concrete spraying method thereof |
| CN110219308A (en) * | 2018-05-29 | 2019-09-10 | 韩玉锐 | A kind of soil nail wall slope retaining grouting device |
| CN110306541A (en) * | 2019-04-11 | 2019-10-08 | 温州市华宁建筑机械有限公司 | With pre- agitating screw formula spray all-in-one machine |
| CN111497012A (en) * | 2020-04-21 | 2020-08-07 | 武汉海王新能源工程技术有限公司 | Movable grouting device for fixing radioactive waste |
-
2012
- 2012-02-06 CN CN2012200360802U patent/CN202450531U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260204A (en) * | 2014-09-19 | 2015-01-07 | 中国水电基础局有限公司 | Paste slurry filling integrated machine and implementation method thereof |
| CN104260204B (en) * | 2014-09-19 | 2016-08-24 | 中国水电基础局有限公司 | Cream slurry pouring integrated machine and its implementation |
| CN104500097A (en) * | 2014-11-21 | 2015-04-08 | 镇江长城注浆设备有限公司 | Vertical stirring and grouting all-in-one machine |
| CN105041641A (en) * | 2015-09-14 | 2015-11-11 | 张荣斌 | Enhanced single-screw pump |
| CN105089272A (en) * | 2015-09-14 | 2015-11-25 | 张荣斌 | Grouter with stirring device and control method of grouter |
| CN105257000A (en) * | 2015-09-14 | 2016-01-20 | 张荣斌 | Grouting machine, and control system and concrete conveying method thereof |
| CN105298131A (en) * | 2015-09-14 | 2016-02-03 | 张荣斌 | Grouter with spray mechanism and concrete spraying method thereof |
| CN107605158A (en) * | 2015-09-14 | 2018-01-19 | 张荣斌 | A kind of concrete spraying method of grouter |
| CN107605158B (en) * | 2015-09-14 | 2019-07-16 | 张荣斌 | A kind of concrete spraying method of grouter |
| CN110219308A (en) * | 2018-05-29 | 2019-09-10 | 韩玉锐 | A kind of soil nail wall slope retaining grouting device |
| CN110306541A (en) * | 2019-04-11 | 2019-10-08 | 温州市华宁建筑机械有限公司 | With pre- agitating screw formula spray all-in-one machine |
| CN111497012A (en) * | 2020-04-21 | 2020-08-07 | 武汉海王新能源工程技术有限公司 | Movable grouting device for fixing radioactive waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202450531U (en) | Integrated grouting machine with stirring screw rod | |
| CN107253273A (en) | A kind of concrete batch plant | |
| CN212498312U (en) | Prevent stifled concrete mixer of using | |
| CN207256536U (en) | Cement mortar mixed stirring device for building | |
| CN108714967A (en) | A kind of self-cleaning concrete mixer | |
| CN215619039U (en) | Raw material mixing device for concrete production | |
| CN201760968U (en) | Continuous stirring distributor in chemical engineering field | |
| CN206703287U (en) | A kind of road engineering cement mixing equipment | |
| CN109464947A (en) | A kind of agitating device for geotechnical engineering construction | |
| CN206897218U (en) | Fertilizer mixing arrangement in proportion | |
| CN205148598U (en) | Single horizontal shaft forced concrete mixer | |
| CN208494061U (en) | A kind of ash multilevel agitating device | |
| CN213791117U (en) | Accelerator adding device | |
| CN214159416U (en) | Portable pneumatic biliquid disjunctor agitating unit of mining hole sealing | |
| CN210999414U (en) | Cement mixing plant is used in construction in room | |
| CN211466902U (en) | High-efficient mixing arrangement of dry powder mortar | |
| CN209408904U (en) | A kind of concrete mixer | |
| CN104226150A (en) | Adhesive cement mixing machine | |
| CN209466458U (en) | A kind of pulping device of environmental protection and energy saving dry-mixed mortar | |
| CN201092093Y (en) | High-capacity highly effective pulping agitator | |
| CN205951026U (en) | Agitating unit and mortar stirrer | |
| CN213440347U (en) | Dry-mixed mortar production equipment | |
| CN216260330U (en) | Automatic proportioning and stirring device for raw materials for after-finishing auxiliaries | |
| CN205185077U (en) | A feed bin for concrete mixing plant proportioning machine | |
| CN205766830U (en) | A kind of novel concrete mixing plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20150206 |
|
| EXPY | Termination of patent right or utility model |